Rubber band stretching equipment
By designing rubber stretching equipment and adjusting the distance between the conveying rollers with the swing rod, the problem of loose and bending during the rubber conveying process is solved, and the stability of rubber conveying and normal sewing are achieved.
Patent Information
- Application Number
- CN202421824484.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-07-31
AI Technical Summary
Existing equipment is prone to loose and bend during the transmission of rubber bands, which leads to inconvenience in transporting and affects the normal sewing of rubber bands and bed covers.
Design a rubber stretching device, including frame, round rod, swing rod, conveying roller and other components. When the rubber tends to be loose and bent, the first conveying roller is kept away from the second conveying roller by swinging the swing rod, thereby tightening the rubber tends to ensure smooth subsequent conveying.
Effectively prevent the rubber from loosening, ensure the smoothness of the rubber transmission and normal sewing.
Smart Images
Figure CN223047714U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of home textile processing, and specifically relates to an elastic band stretching device. Background Art
[0002] When making some fitted sheets, elastic bands need to be sewn on their edges to increase the elasticity of the edges. Among them, in the existing equipment for processing fitted sheets, the sewing of the sheet and the elastic band can already achieve automatic sewing.
[0003] During sewing, the elastic band is conveyed to the sewing area through a conveying device. However, during conveyance, the rubber is very likely to become loose and bent, which in turn makes it inconvenient to convey the elastic band, and further affects the normal sewing of the elastic band and the fitted sheet. Summary of the Utility Model
[0004] The utility model provides an elastic band stretching device to solve the defects in the prior art.
[0005] The utility model is realized through the following technical solutions:
[0006] An elastic band stretching device includes a frame. A round rod is vertically connected to the frame. A swing rod that swings along the axis of the round rod and can be fixed is arranged on the round rod. A first conveying roller is arranged at one end of the swing rod far from the round rod. A second conveying roller parallel to the first conveying roller is also arranged on the frame. The elastic band sequentially bypasses the top surface of the first conveying roller and the bottom surface of the second conveying roller. A support rod is also fixedly connected to the frame. The support rod is coaxially and rotatably connected to a third conveying roller through a bearing. The rubber bypasses from the bottom surface of the second conveying roller to the top surface of the third conveying roller.
[0007] When this application is in use, when the staff finds that the elastic band is loose and bent, first stop the machine, and then swing the swing rod so that the first conveying roller moves away from the second conveying roller, thereby realizing the tensioning of the elastic band and ensuring the subsequent conveyance of the elastic band.
[0008] Preferably, a round groove with the same diameter as the round rod is opened on the swing rod. The round rod passes through the round groove. A strip-shaped through groove penetrating the round groove is opened upward on the inner wall of the round groove. A screw hole is opened on the side surface of the swing rod. The screw hole vertically penetrates the strip-shaped through groove and is threadedly connected with a bolt. The bolt is located above the round groove. The cooperation between the round rod and the round groove enables the swing rod to rotate along the axis of the round rod. By rotating the bolt, the bolt can tighten both sides of the end of the swing rod, making the distance between the strip-shaped through grooves smaller, thereby realizing the extrusion of the round rod and fixing the position between the swing rod and the round rod.
[0009] Preferably, a strip-shaped rod is vertically connected to the frame. The strip-shaped rod is located above the first conveyor roller. A through groove is formed in the strip-shaped rod along its length direction. The width of the through groove is the same as the thickness of the rubber band. After passing through the through groove, the rubber band is wound around the bottom surface of the first conveyor roller. The through groove can adjust the rubber band, so that when the rubber band comes vertically, it can rotate 90 degrees to become horizontal under the limitation of the through groove, and then bypass the first conveyor roller and the second conveyor roller, so that the rubber band leaving the second conveyor roller can better fit the fitted sheet, facilitating sewing.
[0010] Preferably, two first limit plates are arranged on the strip-shaped rod, and the rubber band is located between the two first limit plates.
[0011] Preferably, two second limit plates are fixedly connected to the third conveyor roller, and limit ribs are fixedly sleeved on both sides of the second conveyor roller. The rubber band bypasses between the second limit plates and between the limit ribs.
[0012] Preferably, a cross plate parallel to the third conveyor roller is arranged above the third conveyor roller, and the cross plate is fixedly connected to the frame. The distance between the cross plate and the second conveyor roller is greater than the distance between the third conveyor roller and the second conveyor roller. Therefore, when the rubber band passes over the cross plate, the rubber band can be further tightened.
[0013] The beneficial effect of the present utility model is as follows: By using this application, when the rubber band becomes loose and bent, the first conveyor roller can be swung to tighten the rubber band by increasing the distance between the first conveyor roller and the second conveyor roller, thereby preventing the rubber band from becoming loose and ensuring the subsequent conveyance of the rubber band. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0015] Figure 1 is a schematic structural diagram of the present utility model;
[0016] Figure 2 is Figure 1 the schematic view in the A direction of
[0017] As shown in the figure:
[0018] 1. Rubber band, 2. First conveyor roller, 3. Second conveyor roller, 4. Swing rod, 5. Circular groove, 6. Strip-shaped through groove, 7. Bolt, 8. Third conveyor roller, 9. Strip-shaped rod, 10. Cross plate, 11. First limit plate, 12. Second limit plate, 13. Limit rib, 14. Frame. Detailed implementation mode
[0019] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0020] An elastic band stretching device, as shown in Figure 1 and Figure 2 The device includes a frame 14. A round rod is vertically connected to the frame 14. A swing rod 4 that swings along the axis of the round rod and can be fixed is arranged on the round rod. A first transmission roller 2 is arranged at one end of the swing rod 4 away from the round rod. A second transmission roller 3 parallel to the first transmission roller 2 is also arranged on the frame 14. The elastic band 1 sequentially bypasses the top surface of the first transmission roller 2 and the bottom surface of the second transmission roller 3. A support rod is also fixedly connected to the frame 14. The support rod is coaxially and rotatably connected to a third transmission roller 8 through a bearing. The rubber bypasses the top surface of the third transmission roller 8 upward from the bottom surface of the second transmission roller 3. A strip-shaped rod 9 is also vertically connected to the frame 14. The strip-shaped rod 9 is located above the first transmission roller 2. A through groove is opened along the length direction of the strip-shaped rod 9. The width of the through groove is the same as the thickness of the rubber. The elastic band 1 passes through the through groove and then winds around the bottom surface of the first transmission roller 2.
[0021] When this application is in use, the elastic band 1 extends downward through the through groove, bypasses the first transmission roller 2 and then extends upward. After bypassing the second transmission roller 3, it bends and bypasses the top surface of the third transmission roller 8 and then is transmitted to the sewing area. When the staff finds that the elastic band 1 has a phenomenon of loose and bent wire outlet, first stop the machine, and then swing the swing rod 4 to make the first transmission roller 2 away from the second transmission roller 3, so as to realize the tension of the elastic band 1 and ensure the subsequent transmission of the elastic band 1.
[0022] A circular groove 5 with the same diameter as the round rod is opened on the swing rod 4. The round rod passes through the circular groove 5. A strip-shaped through groove 6 penetrating the circular groove 5 is opened upward on the inner wall of the circular groove 5. A screw hole is opened on the side surface of the swing rod 4. The screw hole vertically penetrates the strip-shaped through groove 6 and is connected with a bolt 7 by screw thread. The bolt 7 is above the circular groove 5. The cooperation between the round rod and the circular groove 5 enables the swing rod 4 to rotate along the axis of the round rod. By rotating the bolt 7, the bolt 7 can tighten both sides of the end of the swing rod 4, making the distance between the strip-shaped through grooves 6 smaller, so as to realize the extrusion of the round rod and make the position between the swing rod 4 and the round rod fixed.
[0023] A blind hole is provided on the third conveying roller 8, and the outer wall of the bearing is fixedly connected inside the blind hole. The support rod is fixedly connected to the inner wall of the bearing, so that the support rod and the third conveying roller 8 are rotatably connected, and the friction between the rubber band 1 and the third conveying roller 8 can be replaced by rolling friction from sliding friction, thereby reducing the friction force.
[0024] The passage slot can realize the adjustment of the elastic band 1, so that when the elastic band 1 comes vertically, it can be rotated 90 degrees to become horizontal under the limitation of the passage slot, and then bypass the first conveying roller 2 and the second conveying roller 3, so that the elastic band 1 leaving the second conveying roller 3 can better fit the mattress cover, which is convenient for sewing.
[0025] Two first limiting plates 11 are arranged on the strip bar 9, and the rubber band 1 is located between the two first limiting plates 11. Two second limiting plates 12 are fixedly connected to the third conveying roller 8, and limiting ribs 13 are fixedly sleeved on both sides of the second conveying roller 3, and the rubber band 1 passes between the second limiting plates 12 and the limiting ribs 13. The first limiting plate 11, the second limiting plate 12 and the limiting ribs 13 can limit the rubber band 1 to prevent it from moving out of the corresponding second conveying roller 3 and the third conveying roller 8 during conveyance.
[0026] A transverse plate 10 parallel to the third conveying roller 8 is provided above the third conveying roller 8, and the transverse plate 10 is fixedly connected to the frame 14. The distance between the transverse plate 10 and the second conveying roller 3 is greater than the distance between the third conveying roller 8 and the second conveying roller 3, so when the rubber band 1 passes over the transverse plate 10, the rubber band 1 can be further tightened.
[0027] The application can swing the first conveying roller 2 when the rubber band 1 becomes loose and bent, so that the distance between the first conveying roller 2 and the second conveying roller 3 becomes larger to tighten the rubber band 1, thereby preventing the rubber band 1 from loosening and ensuring the subsequent conveyance of the rubber band 1.
[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. 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 utility model.
Claims
1. A rubber band stretching device, characterized in that: The machine comprises a frame, a round rod is vertically connected to the frame, a swing rod is arranged on the round rod and can be fixed while swinging along the axis of the round rod, a first conveying roller is arranged at one end of the swing rod away from the round rod, a second conveying roller parallel to the first conveying roller is also arranged on the frame, the rubber band passes around the top surface of the first conveying roller and the bottom surface of the second conveying roller in sequence, a support rod is fixedly connected to the frame, the support rod is coaxially rotatably connected to the third conveying roller through a bearing, the rubber passes around the top surface of the third conveying roller upward from the bottom surface of the second conveying roller, a circular groove with the same diameter as the round rod is provided on the swing rod, the round rod passes through the circular groove, a strip-shaped through-groove penetrating through-the circular groove is provided on the inner wall of the circular groove upward, a screw hole is provided on the side surface of the swing rod, the screw hole passes through the strip-shaped through-groove vertically and is connected to a bolt through the screw hole, and the bolt is above the circular groove.
2. The rubber band stretching device according to claim 1, characterized in that: The frame is also vertically connected with a strip bar, which is located above the first conveying roller. The strip bar is provided with a passing groove along its length, and the width of the passing groove is consistent with the thickness of the rubber. After the rubber band passes through the passing groove, it goes around to the bottom surface of the first conveying roller.
3. The rubber band stretching device according to claim 2, characterized in that: Two first limiting plates are arranged on the strip rod, and the elastic band is located between the two first limiting plates.
4. The rubber band stretching device according to claim 3, characterized in that: Two second limiting plates are fixedly connected to the third conveying roller, limiting ribs are fixedly sleeved on both sides of the second conveying roller, and the rubber bands are passed around between the second limiting plates and the limiting ribs.
5. The elastic stretching device according to claim 4, characterized in that: A transverse plate parallel to the third conveying roller is arranged above the third conveying roller, and the transverse plate is fixedly connected to the frame.