A tensioning device for inner tube

Abstract

The invention discloses a tensioning device for an inner tube, comprising a hanging platform, a side support frame and a tensioning mechanism which are arranged in sequence from top to bottom. The hanging platform is provided with a positioning hole for the inner tube valve to be inserted, the side support frame comprises a frame body and two side support plates, the two side support plates are respectively arranged on the left and right sides of the frame body, and the tensioning mechanism comprises a stand, a tensioning rod and two elastic rods, the tensioning rod can be moved up and down and arranged on the front side of the stand, the two elastic rods are arranged in parallel, and the tensioning rod is arranged between the two elastic rods. The inner tube is hung on the hanging platform to evacuate air, and the tensioning rod pulls down the inner tube to tighten the inner tube. The two side support plates can support the two sides of the middle of the inner ring of the inner tube to guide the direction of the inner tube contraction. The two elastic rods can support the lower part of the inner tube from the rear side, so that the inner tube is hung on the hanging platform and droops straightly. Moreover, the elastic elastic rod can be elastically deformed when the inner tube is evacuated and tightened by the tensioning rod, thereby interfering with the contraction deformation of the inner tube and reducing the distortion of the inner tube when the inner tube contracts.

Description

Technical Field

[0001] The invention relates to the field of inner tube production equipment, in particular to a tensioning device for an inner tube. Background Art

[0002] The latter process of inner tube production requires the inner tube to be evacuated and tightened to shrink the volume of the inner tube for easy packaging. However, after the existing inner tube is tightened, the shrinkage position is often uneven, resulting in local distortion of the inner tube after evacuation, which needs to be sorted before packaging. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned disadvantages and provide an inner tube tensioning device that reduces the distortion caused by inner tube deflating.

[0004] To achieve the above-mentioned purpose, the technical solution of the present invention is: a tensioning device for an inner tube, comprising a hanging platform, a side support frame and a tensioning mechanism arranged in sequence from top to bottom, a positioning hole for the inner tube valve to be inserted is provided on the hanging platform, the side support frame comprises a frame body and two side support plates, the two side support plates are respectively arranged on the left and right sides of the frame body, the tensioning mechanism comprises a stand, a tensioning rod and two elastic rods, the tensioning rod can be moved up and down and arranged on the front side of the stand, the two elastic rods are arranged in parallel, the tensioning rod is arranged between the two elastic rods, one end of the tensioning rod extends forward, and the front end of the tensioning rod exceeds the front ends of the two elastic rods. The inner tube is hung on the hanging platform to evacuate air, and the tensioning rod pulls down the inner tube to tighten the inner tube. The two side support plates can support the two sides of the middle of the inner ring of the inner tube and guide the direction of contraction of the inner tube. The two elastic rods can support the lower part of the inner tube from the rear side, so that the inner tube is hung on the hanging platform and hangs straight down. Moreover, the elastic rod can be elastically deformed when the inner tube is evacuated and tightened by the tension rod, thereby interfering with the shrinkage deformation of the inner tube and reducing the distortion of the inner tube when it shrinks.

[0005] Preferably, both upper and lower ends of the side support plate are bent toward one side of the frame body. The bent parts at both ends of the side support plate cooperate with the tension rod and the hanging platform to make the inner tube present a spindle shape when tightened, and the middle part of the inner tube can stick to the side support plate with a larger area, so that the inner tube after deflating has a neat shape and is not twisted.

[0006] Preferably, the side support plate can be movably arranged on the frame body, and a buffer structure for buffering the left and right movement of the side support plate is provided on the frame body. The buffer structure can be a rubber pad or a buffer cylinder, and the buffer device is that the side support plate can achieve a certain buffer movement in the left and right direction, so that when the inner tube is tightened, it will not cause local distortion due to excessive force.

[0007] Preferably, the tension rod comprises a rod body and a sleeve, and the sleeve can be rotatably sleeved on the rod body. When the tension rod is tightening the inner tube, if the position of the inner tube is skewed, the sleeve can be rotated to adjust the position of the inner tube.

[0008] Preferably, the side support plate is an elastic plate body, and the frame body is connected to the middle and upper part of the side support plate. The upper and lower ends of the side support plate are cantilevered and can be elastically deformed. When the inner tube is tightened, more area of ​​the inner tube can be attached to the side support plate, thereby improving the guiding effect of the side support plate and making the contraction direction of the inner tube consistent.

[0009] Preferably, the elastic rod includes a vertical rod and two legs, both legs are plastically deformable legs, the two legs are respectively arranged at both ends of the vertical rod, one end of the two legs is connected to the vertical rod, and the other end is connected to the stand. The two legs can be bent outward or inward to adjust the position of the elastic rod to adapt to different models of inner tubes.

[0010] By adopting the above technical solution, the invention has the following beneficial effects: the invention provides elastic rods on both sides of the tension rod, and the elastic rods can support the lower part of the inner tube from the rear side, so that the inner tube is hung on the hanging platform and hangs straight down. Moreover, the elastic rods can be elastically deformed when the inner tube is deflated and tightened by the tension rod, thereby interfering with the contraction deformation of the inner tube and reducing the distortion of the inner tube when it shrinks. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the present invention;

[0012] Figure 2 It is a structural schematic diagram of the tensioning mechanism of the present invention;

[0013] Figure 3 It is a schematic structural diagram of the side support frame of the present invention;

[0014] Figure 4 This is a schematic structural diagram of a side support frame according to Embodiment 2 of the present invention.

[0015] Description of main reference numerals:

[0016] The hanging platform 1; the positioning hole 11; the side support frame 2; the frame body 21; the side support plate 22; the buffer structure 23; the stand 31; the tension rod 32; the rod body 321; the sleeve 322; the elastic rod 33; the vertical rod 331; and the support leg 332. DETAILED DESCRIPTION

[0017] The present invention is further described below with reference to the accompanying drawings and specific embodiments.

[0018] Embodiment 1:

[0019] like Figure 1-Figure 3 As shown, the present invention is a tensioning device for inner tube, comprising a hanging platform 1, a side support frame 2 and a tensioning mechanism 3 arranged in sequence from top to bottom. The hanging platform 1 is a small platform for hanging the inner tube, and a positioning hole 11 for the valve of the inner tube to extend into is provided on the hanging platform 1.

[0020] The side support frame 2 includes a frame body 21 and two side support plates 22, which are respectively arranged on the left and right sides of the frame body 21. The upper and lower ends of each side support plate 22 are bent toward one side of the frame body 21. The side support plate 22 is an elastic plate body, and the frame body 21 is connected to the middle and upper parts of the side support plates 22.

[0021] The tensioning mechanism 3 includes a stand 31, a tensioning rod 32 and two elastic rods 33. The tensioning rod 32 is arranged at the front side of the stand 31 and can move up and down. The stand is a vertical slide rail. The tensioning rod 32 is a slide seat that can slide on the column. The stand 31 is provided with a tensioning cylinder, which is used to drive the tensioning rod 32 to move up and down in front of the stand 31. The tensioning rod 32 includes a rod body 321 and a sleeve 322. The sleeve 322 can be rotatably sleeved on the rod body 321. The two elastic rods 33 are arranged in parallel. The tensioning rod 32 is arranged between the two elastic rods 33. One end of the tensioning rod 32 extends forward, and the front end of the tensioning rod 32 exceeds the front ends of the two elastic rods 33. The two elastic rods 33 have the same structure. The elastic rod 33 includes a vertical rod 331 and two supporting legs 332. The two supporting legs 332 are both plastically deformable supporting legs. The two supporting legs 332 are respectively arranged at both ends of the vertical rod 331. One end of the two supporting legs 332 is connected to the vertical rod 331, and the other end is connected to the stand 31.

[0022] During production, the upper end of the inner tube is hung on the hanging platform 1, and its inner ring covers the side support frame 2 and the tension rod 32, and its valve is inserted into the positioning hole 11 of the hanging platform for air extraction. When the inner tube is being evacuated, the tension rod 32 moves down to stretch and flatten the inner tube. After the inner tube is evacuated, the tension rod 32 rises and the inner tube is removed from the hanging platform.

[0023] Embodiment 2:

[0024] like Figure 1 , 2 As shown in Figure 4, a tensioning device for an inner tube of the present invention comprises a hanging platform 1, a side support frame 2 and a tensioning mechanism 3 arranged in sequence from top to bottom. The hanging platform 1 is provided with a positioning hole 11 for the valve of the inner tube to extend into.

[0025] The side support frame 2 includes a frame body 21 and two side support plates 22, and the two side support plates 22 are respectively arranged on the left and right sides of the frame body 21. The upper and lower ends of each side support plate 22 are bent toward one side of the frame body 21. The side support plates 22 are movably arranged on the frame body 21, and a buffer structure 23 for buffering the left and right movement of the side support plates 22 is provided on the frame body 21, and the buffer structure 23 is an elastically deformable structure.

[0026] The tensioning mechanism 3 includes a stand 31, a tensioning rod 32 and two elastic rods 33. The tensioning rod 32 is arranged at the front side of the stand 31 and can move up and down. The stand is a vertical slide rail. The tensioning rod 32 is a slide seat that can slide on the column. The stand 31 is provided with a tensioning cylinder, which is used to drive the tensioning rod 32 to move up and down in front of the stand 31. The tensioning rod 32 includes a rod body 321 and a sleeve 322. The sleeve 322 can be rotatably sleeved on the rod body 321. The two elastic rods 33 are arranged in parallel. The tensioning rod 32 is arranged between the two elastic rods 33. One end of the tensioning rod 32 extends forward, and the front end of the tensioning rod 32 exceeds the front ends of the two elastic rods 33. The two elastic rods 33 have the same structure. The elastic rod 33 includes a vertical rod 331 and two supporting legs 332. The two supporting legs 332 are both plastically deformable supporting legs. The two supporting legs 332 are respectively arranged at both ends of the vertical rod 331. One end of the two supporting legs 332 is connected to the vertical rod 331, and the other end is connected to the stand 31.

[0027] The above-mentioned are only preferred embodiments of the present invention and cannot limit the scope of the present invention. All equivalent changes and decorations made according to the scope of the patent application of the present invention should still fall within the scope of the present invention.

Claims

1. A tensioning device for an inner tube, characterized in that: It includes a hanging platform, a side support frame and a tensioning mechanism which are arranged in sequence from top to bottom. The hanging platform is provided with a positioning hole for the inner tube valve to extend into. The side support frame includes a frame body and two side support plates. The two side support plates are respectively arranged on the left and right sides of the frame body. The tensioning mechanism includes a stand, a tensioning rod and two elastic rods. The tensioning rod can be moved up and down and is arranged on the front side of the stand body. The two elastic rods are arranged in parallel. The two elastic rods can support the lower part of the inner tube from the rear side. The tensioning rod is arranged between the two elastic rods. One end of the tensioning rod extends forward, and the front end of the tensioning rod exceeds the front ends of the two elastic rods. The upper and lower ends of the side support plate are bent to one side of the frame body. The side support plate is an elastic plate body. The frame body is connected to the middle and upper parts of the side support plate. The side support plate can be movably arranged on the frame body left and right. The frame body is provided with a buffer structure for buffering the left and right movement of the side support plate.

2. The inner tube tensioning device according to claim 1, characterized in that: The tension rod comprises a rod body and a sleeve, and the sleeve can be rotatably sleeved on the rod body.

3. The inner tube tensioning device according to claim 1, characterized in that: The elastic rod comprises a vertical rod and two supporting legs, both of which are plastically deformable supporting legs, and the two supporting legs are respectively arranged at two ends of the vertical rod, one end of the two supporting legs is connected to the vertical rod, and the other end is connected to the stand.

Images