Synchronous belt tensioning mechanism of heat sealing machine

Abstract

The utility model discloses a synchronous belt tensioning mechanism of a heat sealing machine, which relates to the field of tensioning mechanisms and comprises a threaded adjusting rod, a baffle and a compression spring. The conveying mechanism of the heat sealing machine comprises a driving belt wheel, a driven belt wheel shaft, a driven belt wheel and a synchronous belt. The length direction of the threaded adjusting rod is parallel to the length direction of the synchronous belt, one side of the threaded adjusting rod is in threaded connection with the part, located below the driven belt wheel, of the driven belt wheel shaft, the other side of the threaded adjusting rod penetrates through the baffle and is movably matched with the baffle, and the baffle is arranged on the side, away from the driving belt wheel, of the driven belt wheel shaft and fixedly connected to equipment. The compression spring is compressed between the side, away from the driven belt wheel, of the baffle and the end of the threaded adjusting rod. The synchronous belt tensioning device has the advantages that the synchronous belt on the driven belt wheel at the connecting line position of the heat sealing machine is directly tensioned and adjusted, the structure is simple, operation is convenient, and efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of tensioning mechanisms, in particular to a synchronous belt tensioning mechanism for a heat sealing machine. Background Art

[0002] A heat sealer heats and melts the film through a heating device, then compresses and seals it at a sealing device. The heat sealer uses a synchronous belt to transport the film. Because the belt deforms during use, a belt tensioner is required to ensure a stable transmission ratio.

[0003] The existing synchronous belt tensioning device generally adjusts the tension of the synchronous belt by the outer end of the driven pulley, but the space at the outer end of the driven pulley at the connection line of the heat sealing machine is small, resulting in too small a tension adjustment margin when using the existing synchronous belt tensioning device. The synchronous belt cannot be tensioned directly, and the tension can only be adjusted from under the driven pulley after the entire equipment is shut down. This will greatly waste work time and reduce efficiency, and frequent disassembly will cause a loss in the transmission efficiency of the synchronous belt. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to directly adjust the tension of the synchronous belt on the driven pulley at the connection point of the heat sealing machine.

[0005] The utility model solves the above technical problems by the following technical means: a heat sealing machine synchronous belt tensioning mechanism, comprising a threaded adjustment rod, a baffle and a compression spring;

[0006] The conveying mechanism of the heat sealing machine includes a driving pulley, a driven pulley shaft, a driven pulley and a synchronous belt, wherein the driving pulley is fixed in position, the driven pulley shaft is rotatably connected to the driven pulley, the driven pulley can move in position, and the synchronous belt is sleeved on the driving pulley and the driven pulley;

[0007] The length direction of the threaded adjustment rod is parallel to the length direction of the synchronous belt, one side of the threaded adjustment rod is threadedly connected to the part of the driven pulley shaft located below the driven pulley, the other side of the threaded adjustment rod passes through the baffle and movably cooperates with the baffle, the baffle is arranged on the side of the driven pulley shaft away from the driving pulley and is fixedly connected to the equipment, and the compression spring is compressed between the side of the baffle away from the driven pulley and the end of the threaded adjustment rod.

[0008] As an optimized technical solution, the conveying mechanism of the heat sealing machine also includes a driven pulley shaft seat, which is fixedly connected to the lower end of the driven pulley shaft; the synchronous belt tensioning mechanism of the heat sealing machine also includes a guide rail, which is fixedly connected to the equipment, and the driven pulley shaft seat is slidably engaged with the guide rail.

[0009] As an optimized technical solution, the conveying mechanism of the heat sealing machine also includes a driving pulley shaft and a driving pulley shaft seat, the driving pulley is fixedly connected to the driving pulley shaft, the driving pulley shaft is rotatably connected to the driving pulley shaft seat, and the driving pulley shaft seat is arranged below the driving pulley and fixedly connected to the equipment.

[0010] As an optimized technical solution, the conveying mechanism of the heat sealing machine also includes a driving pulley end cover, a driving pulley end cover is provided on the top of the driving pulley, and a screw passes through the driving pulley end cover, the driving pulley and the driving pulley shaft, thereby fixing the driving pulley to the driving pulley shaft.

[0011] As an optimized technical solution, the driving pulley shaft is rotatably connected to the driving pulley shaft seat through a deep groove ball bearing.

[0012] As an optimized technical solution, the driven pulley shaft is rotationally connected to the driven pulley via a deep groove ball bearing.

[0013] As an optimized technical solution, the conveying mechanism of the heat sealing machine also includes a driven pulley end cover, and a driven pulley end cover is provided on the top of the driven pulley. A screw passes through the driven pulley end cover and the driven pulley, thereby fixing the driven pulley end cover to the driven pulley and axially limiting the deep groove ball bearing installed in the driven pulley.

[0014] As an optimized technical solution, the spring is sleeved on the outer circumference of the threaded adjustment rod and has two ends fixedly connected to the threaded adjustment rod and the baffle respectively.

[0015] As an optimized technical solution, the threaded adjustment rod adopts a hexagon socket screw.

[0016] As an optimized technical solution, the synchronous belt adopts a Teflon belt.

[0017] The advantages of the present invention are that when tensioning is required, the threaded adjustment rod is manually rotated to pull the driven pulley shaft seat to move along the guide rail to the side away from the driving pulley, thereby tensioning the synchronous belt. Since the tensioning mechanism is arranged below the driven pulley, there is a large tension adjustment margin, which enables the synchronous belt on the driven pulley at the connection line of the heat sealing machine to be directly tensioned and adjusted. The structure is simple, the operation is convenient, and the efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic top view of the synchronous belt tensioning mechanism of the heat sealing machine according to an embodiment of the present invention.

[0019] Figure 2This is a schematic top view of the AA section of the synchronous belt tensioning mechanism of the heat sealing machine according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0021] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention discloses a synchronous belt tensioning mechanism for a heat sealing machine, comprising a threaded adjustment rod 10 , a baffle 11 , a compression spring 12 and a guide rail 13 .

[0022] The conveying mechanism of the heat sealing machine includes a driving pulley shaft 1, a driving pulley shaft seat 2, a driving pulley 3, a driving pulley end cover 4, a driven pulley shaft 5, a driven pulley shaft seat 6, a driven pulley 7, a driven pulley end cover 8 and a synchronous belt 9; a driving pulley end cover 4 is provided on the top of the driving pulley 3, and a screw passes through the driving pulley end cover 4, the driving pulley 3 and the driving pulley shaft 1, thereby fixing the driving pulley 3 to the driving pulley shaft 1; the driving pulley shaft 1 is rotatably connected to the driving pulley shaft seat 2 through a deep groove ball bearing, and the driving pulley shaft seat 2 is provided below the driving pulley 3 and fixedly connected On the equipment, the position of the driving pulley 3 is fixed; the driven pulley shaft 5 is rotatably connected to the driven pulley 7 through a deep groove ball bearing, and a driven pulley end cover 8 is provided on the top of the driven pulley 7. The screw passes through the driven pulley end cover 8 and the driven pulley 7, thereby fixing the driven pulley end cover 8 to the driven pulley 7 and axially limiting the deep groove ball bearing installed in the driven pulley 7; the driven pulley 7 can move its position, and the driven pulley shaft seat 6 is fixedly connected to the lower end of the driven pulley shaft 5; the synchronous belt 9 is sleeved on the driving pulley 3 and the driven pulley 7, and the synchronous belt 9 adopts a Teflon belt.

[0023] The threaded adjusting rod 10 adopts a hexagon socket screw, and the length direction of the threaded adjusting rod 10 is parallel to the length direction of the synchronous belt 9; one side of the threaded adjusting rod 10 is threadedly connected to the part of the driven pulley shaft 5 located below the driven pulley 7, and the other side of the threaded adjusting rod 10 passes through the baffle 11 and movably cooperates with the baffle 11. The baffle 11 is arranged on the side of the driven pulley shaft 5 away from the driving pulley 3 and is fixedly connected to the equipment; the compression spring 12 is compressed between the side of the baffle 11 away from the driven pulley 7 and the end of the threaded adjusting rod 10, the compression spring 12 is sleeved on the outer periphery of the threaded adjusting rod 10 and the two ends are respectively fixedly connected to the threaded adjusting rod 10 and the baffle 11; the guide rail 13 is fixedly connected to the equipment, and the driven pulley shaft seat 6 slides with the guide rail 13.

[0024] Working principle: After the center length of the synchronous belt 9 is determined by the length of the equipment, the positions of the driving pulley shaft seat 2 and the driven pulley shaft seat 6 can be determined. The driving pulley shaft seat 2 is a fixed end in the conveying mechanism of the heat sealing machine. Since the synchronous belt 9 is elastically deformed during use, the center distance is not a fixed value. At this time, a tensioning mechanism is needed to ensure the stability of the transmission ratio. When tensioning is required, the threaded adjustment rod 10 is manually rotated. Because the baffle 11 is fixedly connected to the equipment, and the compression spring 12 will provide a pressure on the threaded adjustment rod 10 in the direction away from the driving pulley 3, the threaded adjustment rod 10 will not move toward the side close to the driving pulley 3, but will pull the driven pulley shaft seat 6 along the guide rail 13 to move away from the driving pulley 3, thereby tensioning the synchronous belt 9. Since the tensioning mechanism is arranged below the driven pulley 7, there is a large tensioning adjustment margin, which can realize direct tensioning adjustment of the synchronous belt 9 on the driven pulley 7 at the connection line of the heat sealing machine.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be understood by those skilled in the art that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A heat sealing machine synchronous belt tensioning mechanism, characterized by: Includes a threaded adjustment rod, a baffle, and a compression spring; The conveying mechanism of the heat sealing machine includes a driving pulley, a driven pulley shaft, a driven pulley and a synchronous belt, wherein the driving pulley is fixed in position, the driven pulley shaft is rotatably connected to the driven pulley, the driven pulley can move in position, and the synchronous belt is sleeved on the driving pulley and the driven pulley; The length direction of the threaded adjustment rod is parallel to the length direction of the synchronous belt, one side of the threaded adjustment rod is threadedly connected to the part of the driven pulley shaft located below the driven pulley, the other side of the threaded adjustment rod passes through the baffle and movably cooperates with the baffle, the baffle is arranged on the side of the driven pulley shaft away from the driving pulley and is fixedly connected to the equipment, and the compression spring is compressed between the side of the baffle away from the driven pulley and the end of the threaded adjustment rod.

2. The heat sealing machine synchronous belt tensioning mechanism according to claim 1, characterized in that: The conveying mechanism of the heat sealing machine also includes a driven pulley shaft seat, which is fixedly connected to the lower end of the driven pulley shaft; the synchronous belt tensioning mechanism of the heat sealing machine also includes a guide rail, which is fixedly connected to the equipment, and the driven pulley shaft seat is in sliding cooperation with the guide rail.

3. The heat sealing machine synchronous belt tensioning mechanism according to claim 1, characterized in that: The conveying mechanism of the heat sealing machine also includes a driving pulley shaft and a driving pulley shaft seat, the driving pulley is fixedly connected to the driving pulley shaft, the driving pulley shaft is rotatably connected to the driving pulley shaft seat, and the driving pulley shaft seat is arranged below the driving pulley and fixedly connected to the equipment.

4. The heat sealing machine synchronous belt tensioning mechanism according to claim 3, characterized in that: The conveying mechanism of the heat sealing machine also includes a driving pulley end cover, a driving pulley end cover is provided on the top of the driving pulley, and a screw passes through the driving pulley end cover, the driving pulley and the driving pulley shaft, thereby fixing the driving pulley on the driving pulley shaft.

5. The heat sealing machine synchronous belt tensioning mechanism according to claim 3, characterized in that: The driving pulley shaft is rotatably connected to the driving pulley shaft seat via a deep groove ball bearing.

6. The heat sealing machine synchronous belt tensioning mechanism according to claim 1, characterized in that: The driven pulley shaft is rotatably connected to the driven pulley via a deep groove ball bearing.

7. The synchronous belt tensioning mechanism of the heat sealing machine according to claim 6, characterized in that: The conveying mechanism of the heat sealing machine also includes a driven pulley end cover, a driven pulley end cover is provided on the top of the driven pulley, and a screw passes through the driven pulley end cover and the driven pulley, thereby fixing the driven pulley end cover to the driven pulley and axially limiting the deep groove ball bearing installed in the driven pulley.

8. The synchronous belt tensioning mechanism of a heat sealing machine according to claim 1, characterized in that: The spring is sleeved on the outer periphery of the threaded adjustment rod, and both ends of the spring are fixedly connected to the threaded adjustment rod and the baffle respectively.

9. The synchronous belt tensioning mechanism of a heat sealing machine according to claim 1, characterized in that: The threaded adjustment rod adopts a hexagon socket screw.

10. The synchronous belt tensioning mechanism of a heat sealing machine according to claim 1, characterized in that: The synchronous belt is a Teflon belt.

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