Hollow plastic part surface welding device

By combining hydraulic and electric motor drives, the problem of existing plastic part clamping structures being unsuitable for multiple sizes has been solved, achieving stable clamping and high-quality welding.

CN224224558UActive Publication Date: 2026-05-12TIANJIN HONGYUANHAI PRECISION MOLD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TIANJIN HONGYUANHAI PRECISION MOLD
Filing Date
2025-06-09
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

Existing plastic part clamping structures are not easy to adjust, cannot adapt to plastic parts of various sizes, and have poor clamping stability, which affects welding quality.

Method used

It adopts a combination structure of hydraulic cylinder, hydraulic push rod, lifting plate, sliding sleeve block, two-way and one-way threaded rod, and rotating motor to achieve stable clamping of plastic parts of different sizes and stable movement of heating device.

Benefits of technology

This technology enables stable clamping of plastic parts of different sizes and stable movement of the heating device, thereby improving welding quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a hollow plastic part surface welding device which comprises an installation bottom plate, an installation frame is arranged above the installation bottom plate, a hydraulic cylinder is arranged in the center of the top end of the installation frame, and the lower portion of the hydraulic cylinder is connected with a hydraulic push rod. The hydraulic push rod penetrates through the mounting frame and extends to the position below the mounting frame to be connected with the lifting plate, first sliding sleeve blocks are arranged on the two sides of the lifting plate correspondingly and arranged on first sliding rods in a sleeving mode, the first sliding rods are arranged in second grooves formed in the inner side of the mounting frame, and third grooves are formed in the two sides of the lower portion of the lifting plate correspondingly. A first bidirectional threaded rod is arranged in the third grooves, and the two ends of the first bidirectional threaded rod are arranged in the two third grooves correspondingly. The utility model can facilitate the surface welding of the plastic part.
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Description

Technical Field

[0001] This utility model relates to the technical field of plastic part surface welding device, specifically a hollow plastic part surface welding device. Background Technology

[0002] When assembling other plastic parts onto the surface of a plastic part, welding is often used. The welding process is as follows: clamping the plastic part and the part to be welded → moving the heating device to the welding surface of the plastic part → heating → retracting the heating device → the clamping fixtures holding the plastic part and the part to be welded perform a mold closing movement → holding pressure and cooling → welding completed.

[0003] However, the existing plastic part clamping structure is not easy to adjust, cannot clamp plastic parts of various sizes, and has poor stability during clamping, which affects the welding quality.

[0004] Therefore, a surface welding device for hollow plastic parts is proposed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a surface welding device for hollow plastic parts, including a mounting base plate, a mounting frame above the mounting base plate, a hydraulic cylinder at the center of the top of the mounting frame, a hydraulic push rod connected to the bottom of the hydraulic cylinder, the hydraulic push rod passing through the mounting frame and extending to the bottom of the mounting frame to connect with a lifting plate, sliding sleeve blocks on both sides of the lifting plate, the sliding sleeve blocks being fitted onto sliding rods, the sliding rods being located in grooves two inside the mounting frame, grooves three on both sides of the lower part of the lifting plate, a bidirectional threaded rod being installed inside the grooves three, the two ends of the bidirectional threaded rod being located in the two grooves three respectively, one end of the bidirectional threaded rod being connected to a rotating motor, threaded sleeve blocks on both sides of the bidirectional threaded rod being fitted onto the threaded sleeve blocks, the lower part of the threaded sleeve blocks being connected to a clamping plate, and grooves three on both sides of the lower part of the lifting plate. The mounting base has two grooves, one of which contains a one-way threaded rod and a threaded sleeve block. The other groove contains a sliding rod and a sliding sleeve block. The threaded sleeve block and the sliding sleeve block are connected to a connecting sleeve at their lower ends. The connecting sleeve is connected to an L-shaped connecting rod via an adjusting bolt at its lower end. The other end of the L-shaped connecting rod is connected to a connecting plate. The connecting plate is connected to a connecting plate 2 via a fastening bolt. The connecting plate 2 is connected to a heating device via a mounting rod. The mounting base has two grooves on its upper sides, each containing a two-way threaded rod. The two ends of the two-way threaded rod are respectively located within the two grooves. A rotating motor 3 is connected to one end of the two-way threaded rod. Threaded sleeve blocks 3 are fitted onto the two ends of the two-way threaded rod, and clamping plates 2 are mounted on the threaded sleeve blocks.

[0006] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0007] This utility model improves the stability of the lifting plate by setting up a hydraulic cylinder, a hydraulic push rod, a lifting plate, a sliding sleeve block, and a sliding rod. The hydraulic cylinder drives the hydraulic push rod to extend, and the extension of the hydraulic push rod drives the lifting plate to descend. When the lifting plate descends, the sliding sleeve blocks on both sides slide on the sliding rod, thus improving the stability of the lifting plate.

[0008] This utility model comprises a rotating motor 1, a rotating motor 3, a bidirectional threaded rod 1, a bidirectional threaded rod 2, a threaded sleeve block 1, a threaded sleeve block 3, a clamping plate 1, and a clamping plate 2. The rotating motor 1 and the rotating motor 3 drive the bidirectional threaded rod 1 and the bidirectional threaded rod 2 to rotate, and the rotation of the bidirectional threaded rod 1 and the bidirectional threaded rod 2 drives the two threaded sleeve blocks 1 and the two threaded sleeve blocks 3 to move closer to each other. In turn, the clamping plate 1 and the clamping plate 2 clamp the two plastic parts respectively, which can be used to clamp plastic parts of different sizes.

[0009] This utility model incorporates a second rotating motor, a one-way threaded rod, a second threaded sleeve, a second sliding rod, and a second sliding sleeve. The second rotating motor drives the one-way threaded rod to rotate, which in turn moves the second threaded sleeve, thereby moving the heating device. As the heating device moves, the second sliding sleeve on the right side moves on the second sliding rod, improving the stability of the movement. The movement of the heating device facilitates subsequent welding of plastic parts.

[0010] This invention improves the stability of the movement of threaded sleeve 1 and threaded sleeve 3 by setting sliding block 1 and sliding block 2 on one side of threaded sleeve 1 and threaded sleeve 3 respectively, and sliding block 1 and sliding block 2 are slidably set in sliding groove 1 and sliding groove 2 respectively. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the external structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the internal structure of this utility model.

[0013] The reference numerals and names in the figure are as follows:

[0014] 1. Mounting base plate; 101. Groove 1; 102. Sliding groove 1; 2. Support leg; 3. Mounting frame; 301. Groove 2; 4. Hydraulic cylinder; 5. Hydraulic push rod; 6. Lifting plate; 601. Groove 3; 602. Sliding groove 2; 603. Groove 4; 604. Groove 5; 7. Sliding sleeve block 1; 8. Sliding rod 1; 9. Double-direction threaded rod 1; 10. Threaded sleeve block 1; 11. Sliding block 1; 12. Rotating motor 1; 13. One-way threaded rod; 4. Threaded sleeve block two; 15. Sliding rod two; 16. Sliding sleeve block two; 17. Rotating motor two; 18. Connecting sleeve; 19. L-shaped connecting rod; 20. Adjusting bolt; 21. Connecting plate one; 22. Connecting plate two; 23. Fastening bolt; 24. Mounting rod; 25. Heating device; 26. Control panel; 27. Clamping plate one; 28. Two-way threaded rod two; 29. ​​Threaded sleeve block three; 30. Sliding block two; 31. Rotating motor three; 32. Clamping plate two. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] As attached Figure 1 , 2As shown, this utility model provides a surface welding device for hollow plastic parts, including a mounting base plate 1. A mounting frame 3 is provided above the mounting base plate 1. A hydraulic cylinder 4 is provided at the center of the top of the mounting frame 3. The hydraulic cylinder 4 is connected to a hydraulic push rod 5 below. The hydraulic push rod 5 passes through the mounting frame 3 and extends to the bottom of the mounting frame 3 to connect with a lifting plate 6. Sliding sleeve blocks 7 are respectively provided on both sides of the lifting plate 6. The sliding sleeve blocks 7 are sleeved on sliding rods 8. The sliding rods 8 are located inside the mounting frame 3. Within the recess 301, recesses 601 are respectively formed on both sides of the lower part of the lifting plate 5. A bidirectional threaded rod 9 is installed inside each recess 601, with its two ends respectively positioned within the two recesses 601. One end of the bidirectional threaded rod 9 is connected to the rotating motor 12. Threaded sleeve blocks 10 are fitted onto both sides of the bidirectional threaded rod 9, and the lower part of each threaded sleeve block 10 is connected to the clamping plate 27. Recesses 603 and 604 are respectively formed on both sides of the lower part of the lifting plate 6. A one-way threaded rod 13 is provided inside groove 4 603, and a threaded sleeve block 2 14 is sleeved on the one-way threaded rod 13. A sliding rod 2 15 is provided inside groove 5 604, and a sliding sleeve block 2 16 is sleeved on the sliding rod 2 15. The threaded sleeve block 2 14 and the sliding sleeve block 2 16 are respectively connected to a connecting sleeve 18 at their lower ends. The lower interior of the connecting sleeve 18 is connected to an L-shaped connecting rod 19 by an adjusting bolt 20. The other end of the L-shaped connecting rod 19 is connected to a connecting plate 21. The connecting plate 21 is connected by a fastening bolt 23. The mounting base plate 1 is connected to the connecting plate 22, which is connected to the heating device 25 via the mounting rod 24. The mounting base plate 1 has grooves 101 on both sides above it. A bidirectional threaded rod 28 is provided inside the groove 101. The two ends of the bidirectional threaded rod 28 are respectively located in the two grooves 101. A rotating motor 31 is connected to one end of the bidirectional threaded rod 28. Threaded sleeve blocks 29 are respectively fitted on both ends of the bidirectional threaded rod 28. A clamping plate 32 is provided on the threaded sleeve blocks 29.

[0017] Specifically, support legs 2 are provided at the four corners below the mounting base plate 1.

[0018] Specifically, one end of the one-way threaded rod 13 penetrates the front surface of the lifting plate 6 and is connected to the rotating motor 17 disposed outside the lifting plate 6.

[0019] Specifically, a sliding block 11 is provided above the threaded sleeve block 10, and the sliding block 11 is slidably disposed in the sliding groove 602 opened at the top of the groove 3 601.

[0020] Specifically, the threaded sleeve block 29 is connected to the sliding block 30 below, and the sliding block 30 is slidably disposed in the sliding groove 102 opened below the groove 101.

[0021] Specifically, a control panel 26 is provided on the outer front surface of the mounting base plate 1. The control panel 26 is electrically connected to the hydraulic cylinder 4, the first rotating motor 12, the second rotating motor 17, the heating device 25, and the third rotating motor 31.

[0022] Working principle: In use, rotating motor 12 drives bidirectional threaded rod 9 to rotate. The rotation of bidirectional threaded rod 9 causes two threaded sleeve blocks 10 to move closer together. The two threaded sleeve blocks 10 moving closer together cause clamping plates 27 to move closer together, clamping one of the plastic parts. Rotating motor 31 drives bidirectional threaded rod 28 to rotate. The rotation of bidirectional threaded rod 28 causes two threaded sleeve blocks 29 to move closer together, clamping the other plastic part. When threaded sleeve blocks 10 and 29 move, sliding blocks 11 and 20 slide within sliding grooves 102 and 602 respectively, improving the stability of their movement. Then, hydraulic cylinder 4... The hydraulic push rod 5 extends, causing the lifting plate 6 to descend. As the lifting plate 6 descends, the sliding sleeves 7 on both sides slide on the sliding rod 8, improving the stability of the lifting plate. The descent of the lifting plate 6 causes the heating device 25 to contact the surface of the plastic part below, activating the heating device to heat-melt the surface of the plastic part. Then, the motor 17 rotates, causing the one-way threaded rod 13 to rotate. The rotation of the one-way threaded rod 13 causes the threaded sleeve 14 to move backward, thereby causing the heating device 25 to move backward and remove the heating device 25 from above the plastic part. The hydraulic cylinder 4 then causes the hydraulic push rod 5 to extend, causing the lifting plate 6 to continue to descend, thus facilitating contact between the upper and lower plastic parts and making it easier to weld the plastic parts.

[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A surface welding device for hollow plastic parts, comprising a mounting base plate (1), characterized in that: An installation frame (3) is provided above the mounting base plate (1). A hydraulic cylinder (4) is provided at the center of the top of the installation frame (3). The hydraulic cylinder (4) is connected to a hydraulic push rod (5) below. The hydraulic push rod (5) passes through the installation frame (3) and extends to the bottom of the installation frame (3) to connect with the lifting plate (6). Sliding sleeve blocks (7) are provided on both sides of the lifting plate (6). The sliding sleeve blocks (7) are fitted on the sliding rods (8). The sliding rods (8) are located in the grooves (301) opened on the inner side of the installation frame (3). The lifting plate (6) is located on both sides below. A groove three (601) is provided, and a bidirectional threaded rod one (9) is provided inside the groove three (601). The two ends of the bidirectional threaded rod one (9) are respectively set in two groove three (601). One end of the bidirectional threaded rod one (9) is connected to a rotating motor one (12). Threaded sleeve blocks one (10) are respectively fitted on both sides of the bidirectional threaded rod one (9). The lower part of the threaded sleeve blocks one (10) is connected to a clamping plate one (27). Grooves four (603) and five (604) are respectively provided on both sides below the lifting plate (6). A unidirectional threaded rod (1) is provided inside the groove four (603). 3) A threaded sleeve block two (14) is fitted on the one-way threaded rod (13). A sliding rod two (15) is provided inside the groove five (604). A sliding sleeve block two (16) is fitted on the sliding rod two (15). The threaded sleeve block two (14) and the sliding sleeve block two (16) are respectively connected to the connecting sleeve (18) below. The connecting sleeve (18) is connected to the L-shaped connecting rod (19) below through the adjusting bolt (20). The other end of the L-shaped connecting rod (19) is connected to the connecting plate one (21). The connecting plate one (21) is connected to the connecting plate two (2) through the fastening bolt (23). 2) Connection: The connecting plate 2 (22) is connected to the heating device (25) via the mounting rod (24). The mounting base plate (1) has groove 1 (101) on both sides above. A bidirectional threaded rod 2 (28) is provided inside the groove 1 (101). The two ends of the bidirectional threaded rod 2 (28) are respectively set in the two groove 1 (101). A rotating motor 3 (31) is connected to one end of the bidirectional threaded rod 2 (28). Threaded sleeve block 3 (29) is sleeved on both ends of the bidirectional threaded rod 2 (28). A clamping plate 2 (32) is provided on the threaded sleeve block 3 (29).

2. The surface welding device for hollow plastic parts according to claim 1, characterized in that: Support legs (2) are provided at the four corners below the mounting base plate (1).

3. The surface welding device for hollow plastic parts according to claim 1, characterized in that: One end of the one-way threaded rod (13) penetrates the front surface of the lifting plate (6) and is connected to the rotating motor (17) installed outside the lifting plate (6).

4. The surface welding device for hollow plastic parts according to claim 1, characterized in that: A sliding block (11) is provided above the threaded sleeve block (10), and the sliding block (11) is slidably disposed in the sliding groove (602) opened at the top of the groove (601).

5. The surface welding device for hollow plastic parts according to claim 1, characterized in that: The threaded sleeve block three (29) is connected to the sliding block two (30) below, and the sliding block two (30) is slidably disposed in the sliding groove one (102) opened below the groove one (101).

6. The surface welding device for hollow plastic parts according to claim 1, characterized in that: The mounting base plate (1) has a control panel (26) on its outer front surface. The control panel (26) is electrically connected to the hydraulic cylinder (4), the first rotating motor (12), the second rotating motor (17), the heating device (25), and the third rotating motor (31).