Stress relieving device for polypropylene plastic machined part
By incorporating a ring plate, connecting rod, and stirring blades into the liquid bath device, and utilizing the combination of ultrasonic vibration and stirring blades, the problem of insufficient stress relief efficiency in polypropylene plastic parts is solved, achieving full coverage and high-efficiency stress relief.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHENGZHOU HONGRAN SEIKO TECH CO LTD
- Filing Date
- 2025-06-18
- Publication Date
- 2026-05-19
AI Technical Summary
Existing polypropylene plastic processing equipment suffers from insufficient efficiency in stress relief, especially in failing to completely address dead zones caused by fixed vibrations.
A stress relief device for polypropylene plastic parts, including a liquid bath, was designed. By setting an impact structure, the ring plate and connecting rod rotate in the liquid bath chamber. Microbubbles are formed by an ultrasonic transmitter and burst instantly. Combined with stirring blades, the contact between the liquid and the material is enhanced, thereby improving the stress relief efficiency.
It effectively avoids the problem of untreated dead corner areas, improves the efficiency of stress relief and the transmittance of ultrasonic energy, ensures full coverage of the material surface, and improves the effect of stress relief.
Smart Images
Figure CN224256133U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polypropylene plastic processing technology, and in particular to a stress relief device for polypropylene plastic processed parts. Background Technology
[0002] Polypropylene plastic processed parts refer to various plastic products made from polypropylene plastic as raw material through processing techniques such as injection molding, extrusion, and blow molding. During processing, polypropylene plastic is subjected to various external forces, such as high pressure during injection molding and stretching during extrusion. This will cause stress to be generated inside the material, affecting its strength. Therefore, stress relief devices are needed.
[0003] A search of Chinese patent publication number "CN110317944B" reveals a "residual stress relief device". This device utilizes the characteristic that ultrasound can propagate in liquids to cause ultrasonic vibration in workpieces immersed in liquids, obtaining sufficient excitation force to induce microscopic plastic deformation within the material, thereby releasing the overall residual stress of the workpiece. It does not require connection to the workpiece, has no destructive effect on the surface or internal structure of the workpiece, and has few requirements on the material, shape, and size of the workpiece. It is applicable to metallic materials, inorganic materials, polymer materials, composite materials, etc., and has special advantages for thin-walled parts, small precision parts, and finished workpieces.
[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. When the device is in use, its ultrasonic vibration is a fixed vibration, which easily leads to untreated dead areas, resulting in insufficient stress relief efficiency for the workpiece, which needs to be improved. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the shortcomings of existing technologies, this utility model provides a stress relief device for polypropylene plastic parts, which solves the technical problem of insufficient processing efficiency of existing devices.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model provides the following technical solution:
[0009] A stress relief device for polypropylene plastic parts includes a liquid bath device, wherein the liquid bath device has a liquid bath chamber inside.
[0010] Each of the liquid bath chambers is equipped with an impact structure;
[0011] The impact structure includes a first ring plate and a second ring plate. The first ring plate is located below the second ring plate. Multiple connecting rods are fixedly installed between the first ring plate and the second ring plate. Multiple ultrasonic transmitters are provided on the inner side of the first ring plate and the second ring plate. A connecting block is fixedly installed on the upper end of the second ring plate. A driven gear is provided on the circumferential surface of the connecting block. A motor is fixedly installed on the circumferential surface of the liquid bath device. A driving gear is fixedly installed on the output shaft of the motor. The driving gear and the driven gear are meshed together.
[0012] Preferably, the first and second ring plates are provided with multiple rotating wheels on their circumferential surfaces, and the rollers of each rotating wheel are in contact with the inner wall of the liquid bath cavity.
[0013] Preferably, the liquid bath chamber has a first sliding groove inside, the liquid bath device has a second sliding groove inside, a first slider is fixedly installed at the lower end of the first ring plate, the first slider is slidably installed inside the first sliding groove, and a second slider is fixedly installed at the lower end of the connecting block, the second slider is slidably installed with the second sliding groove.
[0014] Preferably, each of the connecting rods is fixedly mounted with a stirring blade, the liquid bath cavity is provided with a support frame, and the ultrasonic transmitter and the stirring blade are both located outside the support frame.
[0015] Preferably, the liquid bath device has a cover plate at the upper end and a discharge pipe at the lower end.
[0016] (III) Beneficial Effects
[0017] Firstly, by setting up an impact structure, the operator can turn on the motor to make the driving gear mesh with the driven gear. This causes the driven gear to drive the first ring plate, the second ring plate, and the connecting rod to rotate inside the liquid bath chamber. At the same time, the ultrasonic transmitters on the first and second ring plates fully vibrate the liquid inside the liquid bath chamber, forming microbubbles that burst instantly, impacting the material surface, accelerating molecular chain rearrangement, reducing residual stress, avoiding dead zones, and improving ultrasonic energy transmittance, thus increasing efficiency.
[0018] Secondly, by setting agitator blades on each connecting rod, when the connecting block drives the first ring plate, the second ring plate and the connecting rod to rotate, the connecting rod will drive the agitator blades to move, so that the agitator blades agitate the liquid inside the liquid bath chamber, thereby further improving the contact between the liquid and the material and improving the stress relief efficiency. Attached Figure Description
[0019] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.
[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0021] Figure 2 This is a three-dimensional exploded view of the structure of this utility model.
[0022] Figure 3 This is a cross-sectional view of the liquid bath device of this utility model;
[0023] Figure 4 This is an exploded structural diagram of the connecting block of this utility model;
[0024] Figure 5 This is an exploded structural diagram of the connecting rod of this utility model.
[0025] Legend: 11. Liquid bath device; 12. Liquid bath chamber; 13. First ring plate; 14. Second ring plate; 15. Connecting rod; 16. Ultrasonic transmitter; 17. Driven gear; 18. Motor; 19. Drive gear; 21. First chute; 22. First slider; 23. Second chute; 24. Second slider; 25. Stirring blade; 26. Bearing frame; 27. Connecting block; 28. Cover plate; 29. Discharge pipe; 31. Rotating wheel. Detailed Implementation
[0026] This application provides a stress relief device for polypropylene plastic parts, effectively solving the technical problem of insufficient processing efficiency in existing devices. By setting an impact structure, the operator can turn on the motor to engage the driving gear and driven gear. The driven gear drives the first ring plate, the second ring plate, and the connecting rod to rotate inside the liquid bath chamber. Simultaneously, the ultrasonic transmitters on the first and second ring plates fully vibrate the liquid inside the liquid bath chamber, forming microbubbles that burst instantly, impacting the material surface, accelerating molecular chain rearrangement, reducing residual stress, avoiding dead zones, and improving ultrasonic energy transmittance and efficiency. Furthermore, by setting agitator blades on each connecting rod, when the connecting block drives the first ring plate, the second ring plate, and the connecting rod to rotate, the connecting rod will drive the agitator blades to move, causing the agitator blades to stir the liquid inside the liquid bath chamber, thereby further improving the contact between the liquid and the material and increasing the stress relief efficiency. Example
[0027] like Figures 1-5 As shown, the technical solution in this application embodiment effectively solves the technical problem of insufficient processing efficiency of existing devices. The overall idea is as follows:
[0028] To address the problems existing in the prior art, this utility model provides a stress relief device for polypropylene plastic parts, including a liquid bath device 11, and a liquid bath chamber 12 is provided inside the liquid bath device 11.
[0029] The liquid bath chambers 12 are each equipped with impact structures;
[0030] The impact structure includes a first ring plate 13 and a second ring plate 14. The first ring plate 13 is located below the second ring plate 14. Multiple connecting rods 15 are fixedly installed between the first ring plate 13 and the second ring plate 14. Multiple ultrasonic transmitters 16 are provided on the inner side of the first ring plate 13 and the second ring plate 14 (the ultrasonic transmitters 16 are connected to the external circuit through electric slip rings. An electric slip ring is an electromechanical device used to transmit power, signals or data between rotating parts and fixed parts. Its core function is to avoid the problem of wire entanglement caused by relative rotation). A connecting block 27 is fixedly installed at the upper end of the second ring plate 14. A driven gear 17 is provided on the circumferential surface of the connecting block 27. A motor 18 is fixedly installed on the circumferential surface of the liquid bath device 11. A driving gear 19 is fixedly installed on the output shaft of the motor 18. The driving gear 19 and the driven gear 17 are meshed together.
[0031] By setting up an impact structure, the operator can turn on the motor 18 to make the driving gear 19 mesh with the driven gear 17. The driven gear 17 drives the first ring plate 13, the second ring plate 14 and the connecting rod 15 to rotate inside the liquid bath chamber 12. At the same time, the ultrasonic transmitters 16 on the first ring plate 13 and the second ring plate 14 fully vibrate the liquid inside the liquid bath chamber 12, forming microbubbles that burst instantly, impacting the material surface, accelerating molecular chain rearrangement, reducing residual stress, avoiding dead zones, and improving ultrasonic energy transmittance and efficiency.
[0032] The first ring plate 13 and the second ring plate 14 are provided with a plurality of rotating wheels 31 on their circumferential surfaces, and the rollers of each rotating wheel 31 are in contact with the inner wall of the liquid bath chamber 12.
[0033] By setting rotating wheels 31 on the first ring plate 13 and the second ring plate 14, when the first ring plate 13 and the second ring plate 14 rotate inside the liquid bath cavity 12, the rollers of the rotating wheels 31 will fit against the inner wall of the liquid bath cavity 12, thereby improving the stability of the first ring plate 13 and the second ring plate 14 during rotation.
[0034] The liquid bath chamber 12 has a first sliding groove 21 inside, the liquid bath device 11 has a second sliding groove 23 inside, the lower end of the first ring plate 13 is fixedly installed with a first slider 22, the first slider 22 is slidably installed inside the first sliding groove 21, and the lower end of the connecting block 27 is fixedly installed with a second slider 24, the second slider 24 is slidably installed with the second sliding groove 23.
[0035] By setting the first slide groove 21 and the second slide groove 23, when the connecting block 27 drives the first ring plate 13, the second ring plate 14 and the connecting rod 15 to rotate, the first slider 22 will slide inside the first slide groove 21 and the second slider 24 will slide inside the second slide groove 23, thereby providing support for the impact structure and avoiding vibration from affecting the operation of the impact structure.
[0036] Each connecting rod 15 is fixedly mounted with a stirring blade 25. The liquid bath cavity 12 is provided with a support frame 26. The ultrasonic transmitter 16 and the stirring blade 25 are both located outside the support frame 26.
[0037] By setting agitator blades 25 on each connecting rod 15, when the connecting block 27 drives the first ring plate 13, the second ring plate 14 and the connecting rod 15 to rotate, the connecting rod 15 will drive the agitator blades 25 to move, so that the agitator blades 25 agitate the liquid inside the liquid bath chamber 12, thereby further improving the contact between the liquid and the material and improving the stress relief efficiency.
[0038] The upper end of the liquid bath device 11 is provided with a cover plate 28, and the lower end of the liquid bath device 11 is provided with a discharge pipe 29.
[0039] Working principle:
[0040] In the first step, when using the equipment, the operator can first place the material frame of the polypropylene plastic part into the inner side of the bearing frame 26 using a lifting device. Then, the operator can turn on the ultrasonic transmitter 16 and the motor 18, so that the output shaft of the motor 18 drives the active gear 19 to mesh with the driven gear 17, so that the driven gear 17 drives the first ring plate 13, the second ring plate 14 and the connecting rod 15 to rotate inside the liquid bath chamber 12. At the same time, the ultrasonic transmitter 16 on the first ring plate 13 and the second ring plate 14 fully vibrates the liquid inside the liquid bath chamber 12, forming micro bubbles that burst instantly, impacting the material surface, accelerating the rearrangement of molecular chains, and reducing residual stress.
[0041] In the second step, when the connecting block 27 drives the first ring plate 13, the second ring plate 14 and the connecting rod 15 to rotate, the connecting rod 15 will drive the stirring blade 25 to move, so that the stirring blade 25 stirs the liquid inside the liquid bath chamber 12, thereby further improving the contact between the liquid and the material and improving the stress relief efficiency.
[0042] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.
Claims
1. A stress relief device for polypropylene plastic parts, comprising a liquid bath device (11), wherein the liquid bath device (11) is provided with a liquid bath chamber (12), characterized in that... ； The liquid bath chambers (12) are each equipped with impact structures; The impact structure includes a first ring plate (13) and a second ring plate (14). The first ring plate (13) is located below the second ring plate (14). Multiple connecting rods (15) are fixedly installed between the first ring plate (13) and the second ring plate (14). Multiple ultrasonic transmitters (16) are provided on the inner side of the first ring plate (13) and the second ring plate (14). A connecting block (27) is fixedly installed on the upper end of the second ring plate (14). A driven gear (17) is provided on the circumferential surface of the connecting block (27). Among them, a motor (18) is fixedly installed on the circumferential surface of the liquid bath device (11), and a drive gear (19) is fixedly installed on the output shaft of the motor (18). The drive gear (19) meshes with the driven gear (17). The circumferential surfaces of the first ring plate (13) and the second ring plate (14) are provided with multiple rotating wheels (31), and the rollers of each rotating wheel (31) are in contact with the inner wall of the liquid bath cavity (12).
2. The stress relief device for polypropylene plastic parts as described in claim 1, characterized in that, The liquid bath chamber (12) is provided with a first sliding groove (21); The liquid bath device (11) has a second groove (23) inside.
3. The stress relief device for polypropylene plastic parts as described in claim 2, characterized in that, The first slider (22) is fixedly installed at the lower end of the first ring plate (13); The first slider (22) is slidably installed inside the first groove (21).
4. A stress relief device for polypropylene plastic parts as described in any one of claims 1-3, characterized in that, The lower end of the connecting block (27) is fixedly installed with a second slider (24), and the second slider (24) is slidably installed with the second slide groove (23); Each of the connecting rods (15) has a stirring blade (25) fixedly installed on its surface.
5. The stress relief device for polypropylene plastic parts as described in claim 3, characterized in that, The liquid bath cavity (12) is provided with a support frame (26). The ultrasonic transmitter (16) and the stirring blade (25) are both located outside the support frame (26).
6. The stress relief device for polypropylene plastic parts as described in claim 1, characterized in that, The upper end of the liquid bath device (11) is provided with a cover plate (28); The liquid bath device (11) is provided with a discharge pipe (29) at its lower end.