Plastic positioning and clamping structure

By setting a positioning plate and support column on the clamping plate, and using a hydraulic cylinder, the problem of clamping offset in traditional plastic product clamping devices is solved, achieving higher clamping stability and adaptability, and improving processing accuracy and product quality.

CN224088860UActive Publication Date: 2026-04-07GUO LONG (SHENZHEN) HIGH-TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-23
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Traditional plastic product clamping devices lack an effective positioning mechanism, which makes the clamping plate prone to misalignment during clamping, affecting processing accuracy and quality.

Method used

A plastic positioning and clamping structure was designed. By setting a positioning plate on the clamping plate, the positioning plate contacts the side of the plastic product to achieve centering and positioning. Combined with the use of support columns and hydraulic cylinders, the stability and reliability of clamping are ensured.

Benefits of technology

It effectively reduces clamping offset, improves clamping stability and reliability, adapts to plastic products of different sizes, and enhances processing accuracy and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a plastic positioning and clamping structure, and relates to the technical field of plastic product machining, the plastic positioning and clamping structure comprises a supporting structure, the supporting structure comprises a base, the top of the base is provided with a clamping piece and a positioning piece, the positioning piece comprises a connecting shaft arranged on the base, an L-shaped rod is connected to the connecting shaft in a penetrating mode, and one end of the L-shaped rod is fixedly connected with a positioning plate; the connecting shaft is in threaded connection with a first hand-screwing bolt, and the bottom end of the first hand-screwing bolt penetrates into the connecting shaft and makes contact with the L-shaped rod. Through the arrangement of the positioning plates, when a plastic product is placed between the clamping plates, the side face of the plastic product makes contact with the positioning plates, positioning of the plastic product can be achieved, the clamping pieces can be aligned with the middle area of the side face of the plastic product, and the situation that the clamping pieces are deviated in clamping is reduced; constraint conditions in the clamping process are increased, so that the plastic product is not prone to deviation or inclination when subjected to clamping force.
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Description

Technical Field

[0001] This utility model relates to the field of plastic product processing technology, and more specifically, to a plastic positioning and clamping structure. Background Technology

[0002] In the processing and manufacturing of plastic products, precise positioning and clamping are crucial for ensuring product quality and processing accuracy. Traditional plastic product clamping devices mostly employ two opposing clamping plates, using their opposing movement to clamp and fix the plastic product. However, this clamping method has significant limitations, namely the lack of an effective positioning mechanism, which makes the clamping plates prone to misalignment during clamping, affecting subsequent processing. Therefore, we have made improvements and proposed a new plastic positioning and clamping structure. Utility Model Content

[0003] The purpose of this utility model is to address the existing problem that causes the clamping plate to easily deviate during the clamping process.

[0004] To achieve the above-mentioned objectives, this utility model provides a plastic positioning and clamping structure to improve the aforementioned problems.

[0005] The application is as follows:

[0006] A plastic positioning and clamping structure includes a support structure, the support structure including a base, a clamping component and a positioning component provided on the top of the base, the positioning component including a connecting shaft provided on the base, an L-shaped rod inserted through the connecting shaft, a positioning plate fixedly connected to one end of the L-shaped rod, and a first hand-tightening bolt threadedly connected to the connecting shaft, the bottom end of the first hand-tightening bolt passing through the connecting shaft and contacting the L-shaped rod.

[0007] As a preferred technical solution of this application, support columns are fixedly installed on both sides of the top of the base. The two support columns are located on both sides of the L-shaped rod, and both support columns are in contact with the side of the L-shaped rod.

[0008] As a preferred technical solution of this application, the L-shaped rod is perpendicular to the base when it is in contact with the two support columns.

[0009] As a preferred technical solution of this application, a limiting member is provided between the L-shaped rod and one of the support columns.

[0010] As a preferred technical solution of this application, the limiting member includes a groove formed on the L-shaped rod, and a second hand-tightening bolt is provided on one side of the L-shaped rod. One end of the second hand-tightening bolt passes through the groove and is threadedly connected to one of the support columns.

[0011] As a preferred technical solution of this application, the bottom end of the connecting shaft is connected to the top of the base through a bearing.

[0012] As a preferred technical solution of this application, the clamping member includes two support tubes, and support rods are inserted and connected to the inner walls of the two support tubes. Clamping plates are fixedly connected to the ends of the two support rods that are far apart from each other.

[0013] As a preferred technical solution of this application, both the clamping plate and the positioning plate are provided with anti-slip texture.

[0014] As a preferred technical solution of this application, the two support tubes are respectively fixedly installed on the top of the two support columns, and the two support tubes are fixedly connected.

[0015] As a preferred technical solution of this application, a connecting seat is installed at the bottom of both the support rod and the support tube, and a hydraulic cylinder is connected between the two connecting seats.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] To address the problem of clamping misalignment during clamping in existing technologies, this application introduces a positioning plate. When a plastic product is placed between the clamping plates, its side contacts the positioning plate, enabling positioning of the plastic product. This ensures that the clamping components are aligned with the central area of ​​the plastic product's side, reducing the likelihood of clamping misalignment. The contact between the positioning plate and the side of the plastic product increases the constraint conditions during clamping, making the plastic product less prone to shifting or tilting under clamping force, thus improving the stability and reliability of clamping. Attached Figure Description

[0019] Figure 1 A schematic diagram of the plastic positioning and clamping structure provided in this application;

[0020] Figure 2 A schematic diagram of the first hand-tightened bolt of the plastic positioning and clamping structure provided in this application;

[0021] Figure 3 A bottom view of the plastic positioning and clamping structure provided in this application;

[0022] Figure 4 This is a schematic diagram of the structure of the L-shaped rod of the plastic positioning and clamping structure provided in this application when it is rotated to be parallel with the base.

[0023] The image shows:

[0024] 1. Support structure; 101. Base; 102. Support column; 2. Support tube; 201. Support rod; 202. Clamping plate; 203. Connecting seat; 204. Hydraulic cylinder; 3. Connecting shaft; 301. L-shaped rod; 302. Positioning plate; 303. First hand-tightened bolt; 304. Slide groove; 305. Second hand-tightened bolt. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0026] For an example, please refer to... Figures 1-3 A plastic positioning and clamping structure includes a support structure 1, which includes a base 101. The top of the base 101 is provided with a clamping component and a positioning component. The positioning component includes a connecting shaft 3 on the base 101. An L-shaped rod 301 is inserted through the connecting shaft 3. A positioning plate 302 is fixedly connected to one end of the L-shaped rod 301. A first hand-tightening bolt 303 is threaded through the connecting shaft 3. The bottom end of the first hand-tightening bolt 303 passes through the connecting shaft 3 and contacts the L-shaped rod 301. When the plastic product is placed between the clamping plates, its side contacts the positioning plate 302, which can realize the positioning of the plastic product. This allows the clamping component to be aligned with the middle area of ​​the side of the plastic product, thereby reducing the clamping component from deviating. The contact between the positioning plate 302 and the side of the plastic product increases the constraint conditions during the clamping process, making it less likely for the plastic product to shift or tilt when subjected to clamping force, thus improving the stability and reliability of the clamping.

[0027] The L-shaped rod 301 can be fixed in position by the positioning plate 302, and the L-shaped rod 301 can be moved by loosening the positioning plate 302 to adjust the position of the positioning plate 302, so as to adapt to plastic products of different sizes and improve the application scope of this application.

[0028] Furthermore, support columns 102 are fixedly installed on both sides of the top of the base 101. The two support columns 102 are located on both sides of the L-shaped rod 301, and both support columns 102 are in contact with the side of the L-shaped rod 301. The support columns 102 can support the clamping parts and limit the L-shaped rod 301.

[0029] Furthermore, the L-shaped rod 301 is perpendicular to the base 101 when it is in contact with the two support columns 102. This arrangement provides a reference for adjusting the position of the L-shaped rod 301 by rotating it, so that the L-shaped rod 301 and the base 101 can be perpendicular.

[0030] Furthermore, a limiting member is provided between the L-shaped rod 301 and one of the support columns 102. The limiting member is used to limit the L-shaped rod 301 to prevent the L-shaped rod 301 from rotating.

[0031] Furthermore, the limiting component includes a groove 304 formed on the L-shaped rod 301. A second hand-tightening bolt 305 is provided on one side of the L-shaped rod 301. One end of the second hand-tightening bolt 305 passes through the groove 304 and is threadedly connected to one of the support columns 102. The L-shaped rod 301 can be limited by the cooperation between the second hand-tightening bolt 305 and the support column 102 connected to it, thus preventing the L-shaped rod 301 from rotating. After the second hand-tightening bolt 305 is unscrewed, the L-shaped rod 301 can rotate around the connecting shaft 3.

[0032] Furthermore, the bottom end of the connecting shaft 3 is connected to the top of the base 101 via a bearing, allowing the connecting shaft 3 to rotate, thereby enabling the L-shaped rod 301 to rotate parallel to the support structure 1, i.e. Figure 4 As shown, this makes the overall design more compact, making it easier to carry and store.

[0033] Furthermore, the clamping component includes two support tubes 2, and support rods 201 are inserted and connected to the inner walls of both support tubes 2. Clamping plates 202 are fixedly connected to the ends of the two support rods 201 that are far apart from each other. The support tubes 2 and support rods 201 cooperate with each other to support the clamping plates 202.

[0034] Furthermore, anti-slip textures are provided on both the clamping plate 202 and the positioning plate 302, which can improve the stability of the clamping plate 202 and the positioning plate 302 when in contact with plastic products.

[0035] Furthermore, the two support tubes 2 are respectively fixedly installed on the top of the two support columns 102, and the two support tubes 2 are fixedly connected to each other. The support columns 102 and the base 101 cooperate with each other to support the support tubes 2.

[0036] Furthermore, a connecting seat 203 is installed at the bottom of both the support rod 201 and the support tube 2. A hydraulic cylinder 204 is connected between the two connecting seats 203. The hydraulic cylinder 204 can drive the support rod 201 and the clamping plate 202 to move through the connecting seat 203, so that the clamping plate 202 can clamp or release the plastic product.

[0037] The process of using the plastic positioning and clamping structure provided by this utility model is as follows:

[0038] Loosen the first hand-tightening bolt 303, place a plastic product on top of the two support tubes 2, align the clamp 202 with the middle of the side of the plastic product, then adjust the position of the positioning plate 302 so that the positioning plate 302 contacts the plastic product, and then tighten the first hand-tightening bolt 303. This will allow the positioning plate 302 to position the same plastic product when it is placed later.

[0039] The plastic product is placed on top of the support tube 2. Then, the hydraulic cylinder 204 drives the support rod 201 and the clamping plate 202 to move closer to the support tube 2 through the connecting seat 203, so that the clamping plate 202 clamps the plastic product. When the clamping is released, the hydraulic cylinder 204 drives the support rod 201 and the clamping plate away from the support tube 2 through the connecting seat 203.

[0040] During transportation or storage, loosen the first hand-tightening bolt 303, unscrew the second hand-tightening bolt 305, rotate the L-shaped rod 301 around the connecting shaft 3 until it is parallel to the base 101, and then drive the support rod 201 and the clamping plate 202 towards the support tube 2 via the hydraulic cylinder 204 and the connecting seat 203. Then tighten the first hand-tightening bolt 303 and the second hand-tightening bolt 305, as shown. Figure 4 As shown, the overall structure is more compact at this time, making it easier to carry and store. When used again, the hydraulic cylinder 204 can drive the support rod 201 and the clamping plate 202 away from the support tube 2 through the connecting seat 203. Loosen the first hand-tightening bolt 303, unscrew the second hand-tightening bolt 305, rotate the L-shaped rod 301 with the connecting shaft 3 as the center until it is perpendicular to the base 101, adjust the position of the positioning plate 302, screw on the second hand-tightening bolt 305 and tighten the first hand-tightening bolt 303.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A plastic positioning and clamping structure, characterized in that, The system includes a support structure (1), which includes a base (101). The top of the base (101) is provided with a clamping component and a positioning component. The positioning component includes a connecting shaft (3) provided on the base (101). An L-shaped rod (301) is inserted through the connecting shaft (3). One end of the L-shaped rod (301) is fixedly connected to a positioning plate (302). A first hand-tightening bolt (303) is threaded through the connecting shaft (3). The bottom end of the first hand-tightening bolt (303) is inserted into the connecting shaft (3) and contacts the L-shaped rod (301).

2. The plastic positioning and clamping structure according to claim 1, characterized in that, Support columns (102) are fixedly installed on both sides of the top of the base (101). The two support columns (102) are located on both sides of the L-shaped rod (301), and both support columns (102) are in contact with the side of the L-shaped rod (301).

3. The plastic positioning and clamping structure according to claim 2, characterized in that, The L-shaped rod (301) is perpendicular to the base (101) when it is in contact with the two support columns (102).

4. The plastic positioning and clamping structure according to claim 3, characterized in that, A limiting element is provided between the L-shaped rod (301) and one of the support columns (102).

5. The plastic positioning and clamping structure according to claim 4, characterized in that, The limiting component includes a groove (304) formed on an L-shaped rod (301), and a second hand-tightening bolt (305) is provided on one side of the L-shaped rod (301). One end of the second hand-tightening bolt (305) passes through the groove (304) and is threadedly connected to one of the support columns (102).

6. The plastic positioning and clamping structure according to claim 5, characterized in that, The bottom end of the connecting shaft (3) is connected to the top of the base (101) via a bearing.

7. A plastic positioning and clamping structure according to claim 6, characterized in that, The clamping component includes two support tubes (2), and the inner walls of the two support tubes (2) are connected with support rods (201). The ends of the two support rods (201) that are far apart from each other are fixedly connected with clamping plates (202).

8. The plastic positioning and clamping structure according to claim 7, characterized in that, Both the clamping plate (202) and the positioning plate (302) are provided with anti-slip textures.

9. A plastic positioning and clamping structure according to claim 8, characterized in that, The two support tubes (2) are respectively fixedly installed on the top of the two support columns (102), and the two support tubes (2) are fixedly connected.

10. A plastic positioning and clamping structure according to claim 9, characterized in that, The bottom of the support rod (201) and the support tube (2) are both equipped with connecting seats (203), and a hydraulic cylinder (204) is connected between the two connecting seats (203).