Thermoplastic polyurethane elastomer stretching device
By introducing a limiting plate and a motor-driven bidirectional screw in the thermoplastic polyurethane elastomer processing device, combined with the design of the fixing seat and the slot, the problem of breakage and inconvenience caused by device jitter is solved, and stable and continuous stretching is achieved Process and efficient processing effect.
Patent Information
- Application Number
- CN202420801784.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-17
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-17
AI Technical Summary
The existing thermoplastic polyurethane elastomer processing devices lack limit protection devices, which leads to easy breakage during stretching, and the device is not convenient to fix both ends, making the working efficiency low.
A stretching device including a mounting frame, slide rail, slider, fixed seat, limit plate and motor is designed to achieve limit protection of thermoplastic polyurethane elastomer through a bidirectional screw driven by a motor, and Quickly fix the two ends through the fixing seat and the slot to ensure the stability and continuity of the stretching process.
It effectively avoids fracture caused by jitter, ensures that the thermoplastic polyurethane elastomer reaches the predetermined stretch limit, and improves working efficiency through a rapid fixing mechanism, reducing the risk of jitter and disengagement during the stretching process.
Smart Images
Figure CN222178672U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermoplastic polyurethane elastomer processing, in particular to a thermoplastic polyurethane elastomer stretching device. Background Art
[0002] Thermoplastic polyurethane elastomer, also known as thermoplastic polyurethane rubber, abbreviated as TPU, is a (AB)n type block linear polymer. Thermoplastic polyurethane rubber relies on intermolecular hydrogen bond crosslinking or light crosslinking between macromolecular chains. As the temperature rises or falls, these two crosslinking structures are reversible. In the molten state or solution state, the intermolecular force is weakened, and after cooling or solvent evaporation, the intermolecular force is strong again, restoring the original solid performance. Typical TPUs include spandex, etc.
[0003] At present, thermoplastic polyurethane elastomers need to be stretched during processing to facilitate subsequent processing and production. The existing stretching device does not have a corresponding limit protection device for the thermoplastic polyurethane elastomer when in use. The thermoplastic polyurethane elastomer is easily broken before reaching the predetermined stretching limit due to the shaking of the stretching device during the stretching process. In addition, since the thermoplastic polyurethane elastomer is relatively small, the existing stretching device is not convenient for fixing the two ends of the thermoplastic polyurethane elastomer, and the working efficiency is low. Utility Model Content
[0004] The utility model aims to provide a thermoplastic polyurethane elastomer stretching device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thermoplastic polyurethane elastomer stretching device, comprising a mounting frame, a first bidirectional screw is provided below the mounting frame, a slide rail is provided on the mounting frame, two groups of symmetrically distributed sliders are provided on the mounting frame, the two groups of sliders are slidably connected to the slide rail, a fixed seat is provided above the slider, a fixed frame is provided on the mounting frame, two groups of symmetrically distributed limit plates are provided on the fixed frame, and the two groups of limit plates are slidably connected to the fixed frame.
[0006] As a further preferred embodiment of the present technical solution, a second bidirectional screw is provided on the fixed frame, both ends of the second bidirectional screw respectively pass through the fixed frame and are rotatably connected to the fixed frame, a second motor is provided on the fixed frame, the right end of the second bidirectional screw is connected to the output end of the second motor, and the second bidirectional screw respectively passes through two sets of limit plates and are threadedly connected to the limit plates.
[0007] As a further preferred embodiment of the present technical solution, two groups of symmetrically distributed adjustment blocks are provided on the limit plate, and the two groups of adjustment blocks are slidably connected to the limit plate through sliding rods. A bidirectional threaded rod is provided in the limit plate, and the bidirectional threaded rod is rotatably connected to the limit plate through bearings. Both ends of the bidirectional threaded rod respectively pass through the two groups of sliding rods and are threadedly connected to the sliding rods. A second bevel gear is provided in the limit plate, and a motor is provided in the limit plate.
[0008] As a further preferred embodiment of the present technical solution, a first bevel gear is sleeved on the bidirectional threaded rod, the second bevel gear is connected to the output end of the motor through a rotating shaft, and the second bevel gear is meshingly connected to the first bevel gear.
[0009] As a further preferred embodiment of the present technical solution, both ends of the first bidirectional screw rod respectively pass through the mounting frame and are rotatably connected to the mounting frame, the mounting frame is provided with a first motor, the left end of the first bidirectional screw rod is connected to the output end of the first motor, and the first bidirectional screw rod respectively passes through two groups of sliders and is threadedly connected to the sliders.
[0010] As a further preferred embodiment of the present technical solution, a card slot is provided on the fixed seat, a card block is provided on the fixed seat, two groups of symmetrically distributed slide grooves are provided on the fixed seat, the card block is slidably connected to the fixed seat via the slide grooves, a cylinder is provided on the fixed seat, and the card block is connected to the output end of the cylinder piston rod.
[0011] The utility model provides a thermoplastic polyurethane elastomer stretching device, which has the following beneficial effects:
[0012] (1) The utility model realizes the limiting protection of the thermoplastic polyurethane elastomer during the stretching process by setting a fixed frame and a limiting plate, so as to avoid the thermoplastic polyurethane elastomer from breaking before reaching the predetermined stretching limit due to the shaking of the stretching device during the stretching process; the second motor drives the second bidirectional screw to rotate, and the two sets of limiting plates move relatively to each other under the limiting action of the fixed frame until they are in contact with the two sides of the thermoplastic polyurethane elastomer. During the stretching process, the thermoplastic polyurethane elastomer becomes narrower and narrower, and the second bidirectional screw rotates continuously, so that the two sets of limiting plates are always in contact with the two sides of the thermoplastic polyurethane elastomer, and the stretching path of the thermoplastic polyurethane elastomer is limited during the stretching process, so as to reduce the shaking generated during the stretching process of the elastomer and avoid the breakage of the thermoplastic polyurethane elastomer.
[0013] (2) The utility model realizes rapid fixation of the two ends of the thermoplastic polyurethane elastomer by setting a fixing seat, a slot and a block, and uniformly stretches the thermoplastic polyurethane elastomer during the rotation of the first bidirectional screw; the two sets of fixing seats are attached to the mounting frame, the two ends of the thermoplastic polyurethane elastomer are respectively placed on the two sets of fixing seats, the cylinder is started to drive the block to move downward, the block cooperates with the slot to quickly fix the thermoplastic polyurethane elastomer, the thermoplastic polyurethane elastomer is firmly stuck in the slot under the action of the block, and will not be dislocated during the stretching process of the thermoplastic polyurethane elastomer. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0015] Figure 2 It is a structural schematic diagram of the mounting frame of the utility model;
[0016] Figure 3 It is a structural schematic diagram of the fixing seat of the utility model;
[0017] Figure 4 It is a structural schematic diagram of the limiting plate of the utility model;
[0018] Figure 5 For the utility model Figure 4 -A magnified view of the structure;
[0019] In the figure: 1. mounting bracket; 2. first bidirectional lead screw; 3. first motor; 4. slider; 5. fixing seat; 6. slot; 7. block; 8. slideway; 9. cylinder; 10. slide rail; 11. fixing bracket; 12. second bidirectional lead screw; 13. second motor; 14. limit plate; 15. adjustment block; 16. slide rod; 17. bidirectional threaded rod; 18. first bevel gear; 19. second bevel gear; 20. motor. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0021] The utility model provides a technical solution: Figure 1 , Figure 4 and Figure 5As shown, in this embodiment, a thermoplastic polyurethane elastomer stretching device includes a mounting frame 1, a first bidirectional screw rod 2 is provided below the mounting frame 1, a slide rail 10 is provided on the mounting frame 1, two groups of symmetrically distributed sliders 4 are provided on the mounting frame 1, the two groups of sliders 4 are slidably connected to the slide rail 10, a fixing seat 5 is provided above the slider 4, a fixing frame 11 is provided on the mounting frame 1, two groups of symmetrically distributed limit plates 14 are provided on the fixing frame 11, the two groups of limit plates 14 are slidably connected to the fixing frame 11, a second bidirectional screw rod 12 is provided on the fixing frame 11, both ends of the second bidirectional screw rod 12 respectively penetrate the fixing frame 11 and are rotatably connected to the fixing frame 11, a second motor 13 is provided on the fixing frame 11, and the right end of the second bidirectional screw rod 12 is connected to the output of the second motor 13 The output end is connected, the second bidirectional screw rod 12 respectively penetrates the two groups of limit plates 14 and is threadedly connected with the limit plates 14, the limit plates 14 are provided with two groups of symmetrically distributed adjustment blocks 15, the two groups of adjustment blocks 15 are slidably connected with the limit plates 14 through slide bars 16, a bidirectional threaded rod 17 is provided in the limit plates 14, the bidirectional threaded rod 17 is rotatably connected with the limit plates 14 through bearings, the two ends of the bidirectional threaded rod 17 respectively penetrate the two groups of slide bars 16 and are threadedly connected with the slide bars 16, a second bevel gear 19 is provided in the limit plates 14, a motor 20 is provided in the limit plates 14, a first bevel gear 18 is sleeved on the bidirectional threaded rod 17, the second bevel gear 19 is connected to the output end of the motor 20 through a rotating shaft, and the second bevel gear 19 is meshed with the first bevel gear 18.
[0022] By setting a fixed frame 11 and a limit plate 14, a limit protection is implemented for the thermoplastic polyurethane elastomer during the stretching process, so as to avoid the thermoplastic polyurethane elastomer from breaking when the predetermined stretching limit is not reached due to the shaking of the stretching device during the stretching process; the second bidirectional screw 12 is driven to rotate by the second motor 13, and the two groups of limit plates 14 are relatively moved under the limiting action of the fixed frame 11 until they are in contact with the two sides of the thermoplastic polyurethane elastomer. During the stretching process, the thermoplastic polyurethane elastomer becomes narrower and narrower, and the second bidirectional screw 12 continues to rotate, so that the two groups of limit plates 14 are always in contact with the two sides of the thermoplastic polyurethane elastomer, and the stretching path of the thermoplastic polyurethane elastomer is limited during the stretching process to avoid the thermoplastic polyurethane elastomer from breaking.
[0023] like Figure 2 and Figure 3 As shown, both ends of the first bidirectional screw rod 2 respectively pass through the mounting frame 1 and are rotatably connected to the mounting frame 1, the mounting frame 1 is provided with a first motor 3, the left end of the first bidirectional screw rod 2 is connected to the output end of the first motor 3, the first bidirectional screw rod 2 respectively passes through two groups of sliders 4 and is threadedly connected to the sliders 4, a slot 6 is provided on the fixed seat 5, a block 7 is provided on the fixed seat 5, two groups of symmetrically distributed slide grooves 8 are provided on the fixed seat 5, the block 7 is slidably connected to the fixed seat 5 through the slide groove 8, a cylinder 9 is provided on the fixed seat 5, and the block 7 is connected to the output end of the piston rod of the cylinder 9.
[0024] By setting a fixing seat 5, a slot 6 and a block 7, the two ends of the thermoplastic polyurethane elastomer can be quickly fixed, and the thermoplastic polyurethane elastomer can be stretched at a uniform speed during the rotation of the first bidirectional screw 2; the two groups of fixing seats 5 are attached to the mounting frame 1, and the two ends of the thermoplastic polyurethane elastomer are respectively placed on the two groups of fixing seats 5, and the cylinder 9 is started to drive the block 7 to move downward, and the block 7 cooperates with the slot 6 to quickly fix the thermoplastic polyurethane elastomer. The thermoplastic polyurethane elastomer is firmly stuck in the slot 6 under the action of the block 7, and will not be dislocated during the stretching process of the thermoplastic polyurethane elastomer.
[0025] The utility model provides a thermoplastic polyurethane elastomer stretching device, and the specific working principle is as follows: two groups of fixing seats 5 are fitted on a mounting frame 1, two ends of the thermoplastic polyurethane elastomer are respectively placed on the two groups of fixing seats 5, and the cylinder 9 is started to drive the clamping block 7 to move downward, and the clamping block 7 cooperates with the clamping slot 6 to quickly fix the thermoplastic polyurethane elastomer, and the thermoplastic polyurethane elastomer is firmly clamped in the clamping slot 6 under the action of the clamping block 7, and will not be separated from the fixation during the stretching process of the thermoplastic polyurethane elastomer, and the second bidirectional screw rod 12 is driven to rotate by the second motor 13, and the two groups of limiting plates 14 are relatively moved under the limiting action of the fixing frame 11 until they are fitted with both sides of the thermoplastic polyurethane elastomer, and the thermoplastic polyurethane elastomer becomes narrower and narrower during the stretching process, and the second bidirectional screw rod 12 is continuously rotated, so that the two groups of limiting plates 14 are always fitted with both sides of the thermoplastic polyurethane elastomer, and the stretching path of the thermoplastic polyurethane elastomer is limited during the stretching process of the thermoplastic polyurethane elastomer to avoid the breakage of the thermoplastic polyurethane elastomer.
[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A thermoplastic polyurethane elastomer stretching device, comprising a mounting frame (1), characterized in that: A first bidirectional screw rod (2) is provided below the mounting frame (1), a slide rail (10) is provided on the mounting frame (1), two groups of symmetrically distributed sliders (4) are provided on the mounting frame (1), the two groups of sliders (4) are slidably connected to the slide rail (10), a fixing seat (5) is provided above the slider (4), a fixing frame (11) is provided on the mounting frame (1), two groups of symmetrically distributed limit plates (14) are provided on the fixing frame (11), and the two groups of limit plates (14) are slidably connected to the fixing frame (11).
2. A thermoplastic polyurethane elastomer stretching device according to claim 1, characterized in that: The fixed frame (11) is provided with a second bidirectional screw rod (12), both ends of which respectively pass through the fixed frame (11) and are rotatably connected to the fixed frame (11), the fixed frame (11) is provided with a second motor (13), the right end of the second bidirectional screw rod (12) is connected to the output end of the second motor (13), and the second bidirectional screw rod (12) respectively passes through two sets of limit plates (14) and is threadedly connected to the limit plates (14).
3. A thermoplastic polyurethane elastomer stretching device according to claim 1, characterized in that: The limit plate (14) is provided with two groups of symmetrically distributed adjustment blocks (15), and the two groups of adjustment blocks (15) are slidably connected to the limit plate (14) through a sliding rod (16). A bidirectional threaded rod (17) is provided in the limit plate (14), and the bidirectional threaded rod (17) is rotatably connected to the limit plate (14) through a bearing. Two ends of the bidirectional threaded rod (17) respectively penetrate the two groups of sliding rods (16) and are threadedly connected to the sliding rods (16). A second bevel gear (19) is provided in the limit plate (14), and a motor (20) is provided in the limit plate (14).
4. A thermoplastic polyurethane elastomer stretching device according to claim 3, characterized in that: The bidirectional threaded rod (17) is sleeved with a first bevel gear (18), the second bevel gear (19) is connected to the output end of the motor (20) via a rotating shaft, and the second bevel gear (19) is meshingly connected with the first bevel gear (18).
5. A thermoplastic polyurethane elastomer stretching device according to claim 1, characterized in that: Both ends of the first bidirectional screw rod (2) respectively pass through the mounting frame (1) and are rotatably connected to the mounting frame (1); a first motor (3) is provided on the mounting frame (1); the left end of the first bidirectional screw rod (2) is connected to the output end of the first motor (3); and the first bidirectional screw rod (2) respectively passes through two sets of sliders (4) and is threadedly connected to the sliders (4).
6. A thermoplastic polyurethane elastomer stretching device according to claim 1, characterized in that: The fixing seat (5) is provided with a slot (6), the fixing seat (5) is provided with a block (7), the fixing seat (5) is provided with two groups of symmetrically distributed slide grooves (8), the block (7) is slidably connected to the fixing seat (5) via the slide grooves (8), the fixing seat (5) is provided with a cylinder (9), and the block (7) is connected to the output end of the piston rod of the cylinder (9).