Heat-sealing transmission mechanism and air cushion machine

Abstract

Disclosed are heat-sealing transmission mechanism and air cushion machine. The heat-sealing transmission mechanism includes a wheel body and heating elements wound around the outer circumference of the wheel body. Gaps are formed between two bent corners of the heating elements. The gaps of at least two heating elements are circumferentially staggered on an axial projection plane of the wheel body. The air cushion machine includes a driving component and the heat-sealing transmission mechanism. The heating elements form at least two heat-sealing lines on the film ply. The two bent corners of the heating elements form a pair of heat-sealing trailing ends which share extrusion pressure exerted by the gas in the inflatable chamber, thereby minimizing the likelihood of poor sealing at the heat-sealing trailing ends. Sealed gas leaking through the gap between the pair of heat-sealing trailing ends near inflatable chamber is blocked by at least one heat-sealing line.

1 . A heat-sealing transmission mechanism, comprising:
 a rotatable wheel body; and   a plurality of heating elements wound around an outer circumference of the wheel body, wherein gaps are formed between two bent corners of the heating elements on the outer circumference of the wheel body, and at least two heating elements have gaps on the outer circumference of the wheel body and circumferentially staggered on an axial projection plane of the wheel body,   wherein overlapping film plies are sealed together by bringing the wheel body into contact with the overlapping film plies and heating the heating elements to a temperature sufficient to seal the film plies together.   
     
     
         2 . The heat-sealing transmission mechanism according to  claim 1 , wherein two heating elements are arranged in parallel, with the gaps on the outer circumference of the wheel body located on opposite sides of the wheel body. 
     
     
         3 . The heat-sealing transmission mechanism according to  claim 2 , wherein the outer circumference of the wheel body is provided with a first notch and a second notch, with two ends of one heating element inserted into the first notch and two ends of the other heating element inserted into the second notch, the first notch being near one end of the wheel body, and the second notch being near the other end of the wheel body. 
     
     
         4 . The heat-sealing transmission mechanism according to  claim 2 , wherein both ends of the heating elements are inserted into the outer circumference of the wheel body. 
     
     
         5 . The heat-sealing transmission mechanism according to  claim 1 , wherein a plane where the heating elements are located is perpendicular to an axial direction of the wheel body. 
     
     
         6 . The heat-sealing transmission mechanism according to  claim 1 , wherein the outer circumference of the wheel body is provided with accommodating grooves for housing the heating elements, the number of accommodating grooves being the same as the number of heating elements, and the heating elements are housed in the accommodating grooves with surfaces thereof not lower than an outer circumference surface of the wheel body. 
     
     
         7 . The heat-sealing transmission mechanism according to  claim 2 , further comprising two first springs and two second springs provided on the wheel body,
 wherein one end of each of the two first springs is fixed to the wheel body, and the other end is connected to one end of each of the two heating elements,   wherein one end of each of the two second springs is fixed to the wheel body, and the other end is connected to the other end of each of the two heating elements.   
     
     
         8 . The heat-sealing transmission mechanism according to  claim 3 , further comprising two first springs and two second springs provided on the wheel body,
 wherein one end of each of the two first springs is fixed to the wheel body, and the other end is connected to one end of each of the two heating elements,   wherein one end of each of the two second springs is fixed to the wheel body, and the other end is connected to the other end of each of the two heating elements.   
     
     
         9 . The heat-sealing transmission mechanism according to  claim 4 , further comprising two first springs and two second springs provided on the wheel body,
 wherein one end of each of the two first springs is fixed to the wheel body, and the other end is connected to one end of each of the two heating elements,   wherein one end of each of the two second springs is fixed to the wheel body, and the other end is connected to the other end of each of the two heating elements.   
     
     
         10 . The heat-sealing transmission mechanism according to  claim 2 , further comprising a first conductive sheet, a second conductive sheet, a third conductive sheet, and a fourth conductive sheet provided on the wheel body,
 wherein one end of the first conductive sheet is disposed at one end of a first heating element, and one end of the second conductive sheet is disposed at the other end of the first heating element,   one end of the third conductive sheet is disposed at one end of a second heating element, and one end of the fourth conductive sheet is disposed at the other end of the second heating element.   
     
     
         11 . The heat-sealing transmission mechanism according to  claim 3 , further comprising a first conductive sheet, a second conductive sheet, a third conductive sheet, and a fourth conductive sheet provided on the wheel body,
 wherein one end of the first conductive sheet is disposed at one end of a first heating element, and one end of the second conductive sheet is disposed at the other end of the first heating element,   one end of the third conductive sheet is disposed at one end of a second heating element, and one end of the fourth conductive sheet is disposed at the other end of the second heating element.   
     
     
         12 . The heat-sealing transmission mechanism according to  claim 4 , further comprising a first conductive sheet, a second conductive sheet, a third conductive sheet, and a fourth conductive sheet provided on the wheel body,
 wherein one end of the first conductive sheet is disposed at one end of a first heating element, and one end of the second conductive sheet is disposed at the other end of the first heating element,   one end of the third conductive sheet is disposed at one end of a second heating element, and one end of the fourth conductive sheet is disposed at the other end of the second heating element.   
     
     
         13 . The heat-sealing transmission mechanism according to  claim 10 , further comprising a first binding post and a second binding post provided on the wheel body, wherein the other end of the second conductive sheet is connected to the other end of the fourth conductive sheet to connect the two heating elements in series, the other end of the first conductive sheet is disposed on the first binding post, and the other end of the third conductive sheet is disposed on the second binding post. 
     
     
         14 . The heat-sealing transmission mechanism according to  claim 11 , further comprising a first binding post and a second binding post provided on the wheel body, wherein the other end of the second conductive sheet is connected to the other end of the fourth conductive sheet to connect the two heating elements in series, the other end of the first conductive sheet is disposed on the first binding post, and the other end of the third conductive sheet is disposed on the second binding post. 
     
     
         15 . The heat-sealing transmission mechanism according to  claim 12 , further comprising a first binding post and a second binding post provided on the wheel body, wherein the other end of the second conductive sheet is connected to the other end of the fourth conductive sheet to connect the two heating elements in series, the other end of the first conductive sheet is disposed on the first binding post, and the other end of the third conductive sheet is disposed on the second binding post. 
     
     
         16 . The heat-sealing transmission mechanism according to  claim 5 , wherein, at least two heat-sealing lines are formed by the heating elements along an axial direction of the wheel body on the film plies, and at least one pair of heat-sealing trailing ends are also formed on each heat-sealing line, so that an extrusion pressure exerted by sealed gas inside an inflatable chamber on the two heat-sealing trailing ends is balanced, and gas leaked from the inflatable chamber will be blocked by at least one heat-sealing line. 
     
     
         17 . An air cushion machine, comprising a driving component and the heat-sealing transmission mechanism according to  claim 1 , wherein the driving component drives the wheel body to rotate. 
     
     
         18 . An air cushion machine, comprising a driving component and the heat-sealing transmission mechanism according to  claim 16 , wherein the driving component drives the wheel body to rotate.