Position limiting device for plastic product processing with good fixing effect

Abstract

The utility model relates to the technical field of plastic product processing, and disclose a fixed effectual spacing device for plastic product processing. The fixed effectual spacing device for plastic product processing can avoid the direct contact between the limiting block and the plastic product by movably sleeving the rubber sleeve on the outer surface of the limiting block, the soft rubber sleeve can effectively buffer the pressure applied to the plastic product during the limiting process, prevent the surface of the plastic product from being scratched or pressed out of marks, protect the appearance quality of the plastic product, at the same time, the surface of the rubber sleeve has a certain roughness, which increases the friction with the surface of the plastic product to a certain extent, improves the stability of the fixing, in addition, the design that the rubber sleeve is movably connected with the limiting block through the connecting pin is convenient for the staff to overhaul and replace the rubber sleeve, when the rubber sleeve is worn, aged or the like, only needs to pull out the connecting pin, and the rubber sleeve can be quickly disassembled and replaced, reduces the problem of the decline of the fixing effect caused by the failure of the rubber sleeve.

Description

Technical Field

[0001] This utility model relates to the field of plastic product processing technology, specifically to a limiting device for processing plastic products with good fixing effect. Background Technology

[0002] With the widespread application of plastic products in various industries, their processing technology and quality requirements are becoming increasingly stringent. In the process of plastic product processing, precise and stable fixing of the products is a key link to ensure processing accuracy and improve production efficiency. Reasonable limiting devices can not only ensure that the products do not shift or deform during processing, but also effectively reduce the defect rate and lower production costs.

[0003] The existing patent document CN219337518U discloses a limiting mechanism for processing plastic products. In this utility model, the rotation of a motor causes a worm gear to rotate, which in turn causes a threaded shaft to move a lifting block up and down. This allows a transmission rod to push and pull a slider, which in turn causes a sliding plate to move a set limiting clamp. The four limiting clamps can move simultaneously, which facilitates the rapid positioning and clamping of plastic products. This ensures stability during the processing of plastic products while also facilitating quick assembly and disassembly of the plastic products.

[0004] However, existing limiting devices for plastic product processing are not conducive to effectively protecting the limiting surfaces of plastic products during use. Existing limiting devices use rigid materials that directly contact the plastic products. When limiting forces are applied, the sharp edges of the metal surface can easily scratch the surface of the plastic products, resulting in defects such as scratches and dents, reducing the appearance quality and yield rate of the products. This is especially true for products with extremely high surface quality requirements, such as precision injection molded parts and optical plastic products, where even minor scratches can lead to the direct scrapping of the products. In addition, the rigid contact method of traditional limiting devices means that plastic products lack buffering and deformation space when subjected to force, resulting in significant local stress concentration. During long-term, high-frequency processing, this stress concentration can not only damage the surface of the plastic products but may also cause internal structural deformation, micro-cracks, and other hidden dangers, seriously affecting the physical properties and service life of the products, making it difficult to meet the stringent requirements of modern plastic product processing for high precision and high quality. Utility Model Content

[0005] The purpose of this utility model is to provide a limiting device for processing plastic products with good fixing effect, so as to solve the problem mentioned in the background art that the existing limiting devices for processing plastic products are not convenient to form effective protection for the limiting surface of plastic products during use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a limiting device for processing plastic products with good fixing effect, including a support base, a limiting block is provided above the support base, a rubber sleeve is movably sleeved on the outer surface of the limiting block, a connecting pin is movably inserted into the upper surface of the rubber sleeve, and the connecting pin is movably connected to the limiting block.

[0007] Furthermore, a first limiting frame is fixedly installed on one side of the upper surface of the support base, and a limiting motor is fixedly installed on one side inside the first limiting frame.

[0008] Furthermore, the transmission end of the limit motor is fixedly connected to a double-sided threaded shaft, and the end of the double-sided threaded shaft away from the limit motor is connected to the first limit frame through a bearing.

[0009] Furthermore, the outer surface of the double-sided threaded shaft is connected to an internal threaded sleeve by a thread, and there are two sets of internal threaded sleeves. The internal threaded sleeves are slidably connected to the inner wall of the first limiting frame.

[0010] Furthermore, the internal threaded sleeve is fixedly connected to the limiting block, and a fixing ear plate is fixedly provided on the side of the upper surface of the support base away from the first limiting frame.

[0011] Furthermore, an electric push rod is fixedly installed on one side of the fixed ear plate, and a push rod is fixedly connected to the transmission end of the electric push rod away from the fixed ear plate.

[0012] Furthermore, a second limiting frame is fixedly connected to the end of the push rod away from the electric push rod. The second limiting frame is symmetrically arranged with the first limiting frame, and the second limiting frame has the same structure as the first limiting frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. This limiting device for processing plastic products with good fixing effect avoids direct contact between the limiting block and the plastic product by movably fitting a rubber sleeve on the outer surface of the limiting block. The soft rubber sleeve can effectively buffer the pressure applied to the plastic product during the limiting process, preventing scratches or marks on the surface of the plastic product and protecting its appearance quality. At the same time, the surface of the rubber sleeve has a certain roughness, which increases the friction with the surface of the plastic product to a certain extent, improving the stability of the fixing. In addition, the design of the rubber sleeve being movably connected to the limiting block by the connecting pin makes it easy for staff to inspect and replace the rubber sleeve. When the rubber sleeve is worn or aged, the rubber sleeve can be quickly disassembled and replaced by simply pulling out the connecting pin, ensuring that the limiting device always maintains good working performance and reducing the problem of decreased fixing effect due to rubber sleeve failure. 2. This limiting device for processing plastic products with good fixing effect drives the double-sided threaded shaft to rotate through the limiting motor in the first limiting frame. This causes the two sets of internal threaded sleeves connected by the outer surface threads to slide along the inner wall of the first limiting frame. Since the internal threaded sleeves are fixedly connected to the limiting blocks, the limiting blocks are moved. This design allows the position of the limiting blocks to be flexibly adjusted according to the size of the plastic products, achieving precise limiting of plastic products of different sizes. Whether it is a small plastic part or a large plastic component, stable fixing can be achieved by adjusting the spacing of the limiting blocks. This greatly improves the versatility and applicability of the device and reduces the cost and time of needing to replace different limiting devices due to differences in the size of plastic products. 3. This effective limiting device for plastic product processing features an electric push rod mounted on a fixed ear plate on a support base. The transmission end of the electric push rod connects to a push rod and a second limiting frame, which is symmetrically arranged with the first limiting frame. This allows for simultaneous limiting of the plastic product from both sides. The electric push rod moves the second limiting frame, which, in conjunction with the first limiting frame, provides a uniform and stable limiting force. During plastic product processing, when faced with external forces such as cutting forces and vibrations, this double-sided limiting structure effectively prevents displacement or shaking of the plastic product, significantly improving the fixing effect and ensuring processing accuracy and quality. Furthermore, the electric push rod allows for precise stroke control, enabling operators to flexibly adjust the limiting force and position according to different processing needs. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the No. 2 limiting frame of this utility model; Figure 3 This is a schematic diagram of the three-dimensional structure of the No. 1 limiting frame of this utility model; Figure 4 This is an enlarged structural diagram showing a partial detail of the rubber sleeve of this utility model.

[0015] In the diagram: 1. Support base; 2. Limiting block; 3. Rubber sleeve; 4. Connecting pin; 5. First limiting frame; 6. Limiting motor; 7. Double-sided threaded shaft; 8. Internal threaded sleeve; 9. Fixed ear plate; 10. Electric push rod; 11. Push rod; 12. Second limiting frame. Detailed Implementation

[0016] 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.

[0017] Please see Figure 1 - Figure 4 This utility model provides a technical solution: a limiting device for processing plastic products with good fixing effect, including a support base 1, a limiting block 2 is provided above the support base 1, a rubber sleeve 3 is movably sleeved on the outer surface of the limiting block 2, a connecting pin 4 is movably inserted into the upper surface of the rubber sleeve 3, and the connecting pin 4 is movably connected to the limiting block 2.

[0018] The two limit blocks 2 gradually approach the plastic product and come into contact with the product surface through the rubber sleeve 3 fitted on the outer surface. The rubber sleeve 3 is soft and elastic, and can closely fit the surface of the plastic product. While applying the limiting force, it effectively buffers the pressure and avoids damage to the product. With the cooperation of the limit motor 6 and the electric push rod 10, multiple limit blocks 2 apply a uniform and stable limiting force to the plastic product, firmly fixing it in the processing position and ensuring that the plastic product will not shift or shake during processing. When the rubber sleeve 3 wears or ages after long-term use and needs to be repaired or replaced, the operator only needs to pull out the connecting pin 4 on the upper surface of the rubber sleeve 3. Since the connecting pin 4 is movably connected to the limit block 2, the rubber sleeve 3 can be separated from the limit block 2 after being pulled out, achieving quick disassembly. When replacing the new rubber sleeve 3, it is put on the outer surface of the limit block 2 and then the connecting pin 4 is inserted to fix it, thus completing the replacement operation. The whole process is simple and quick, which makes it convenient for the staff to perform daily maintenance on the protective structure of the limit device and ensure that it is always in good working condition.

[0019] A first limit frame 5 is fixedly installed on one side of the upper surface of the support base 1. A limit motor 6 is fixedly installed on one side inside the first limit frame 5. A double-threaded shaft 7 is fixedly connected to the transmission end of the limit motor 6. The end of the double-threaded shaft 7 away from the limit motor 6 is connected to the first limit frame 5 through a bearing. An internal threaded sleeve 8 is threadedly connected to the outer surface of the double-threaded shaft 7. There are two sets of internal threaded sleeves 8. The internal threaded sleeves 8 are slidably connected to the inner wall of the first limit frame 5. The internal threaded sleeves 8 are fixedly connected to the limit block 2. A fixed ear plate 9 is fixedly installed on the side of the upper surface of the support base 1 away from the first limit frame 5. An electric push rod 10 is fixedly installed on one side of the fixed ear plate 9. A push rod 11 is fixedly connected to the transmission end of the electric push rod 10 away from the fixed ear plate 9. A second limit frame 12 is fixedly connected to the end of the push rod 11 away from the electric push rod 10. The second limit frame 12 is symmetrically arranged with the first limit frame 5. The second limit frame 12 has the same structure as the first limit frame 5.

[0020] When using this device for limiting operations in plastic product processing, the operator places the plastic product on one side of the first limiting frame 5, ensuring the product is positioned between the limiting blocks 2. Then, the operator activates the electric push rod 10 on one side of the fixed ear plate 9. The transmission end of the electric push rod 10 pushes the push rod 11, thereby moving the second limiting frame 12 towards the first limiting frame 5. Since the second limiting frame 12 has the same structure and is symmetrically arranged as the first limiting frame 5, as the second limiting frame 12 moves, the limiting blocks 2 connected internally via the same transmission structure (limiting motor 6, double-sided threaded shaft 7, internal threaded sleeve 8, etc.) also move synchronously, allowing the first limiting frame 5 and the second limiting frame 12 to control the plastic product. A preliminary limit is formed, and then the limit motor 6 in the first limit frame 5 is started. The transmission end of the limit motor 6 drives the double-sided threaded shaft 7 to rotate. Since the threads at both ends of the double-sided threaded shaft 7 turn in opposite directions, and its outer surface is connected to two sets of internal threaded sleeves 8 by threads, when the double-sided threaded shaft 7 rotates, the two sets of internal threaded sleeves 8 will move in a straight line towards or away from each other along the inner wall of the first limit frame 5. Since the internal threaded sleeves 8 are fixedly connected to the limit block 2, the movement of the internal threaded sleeves 8 will synchronously drive the limit block 2 to move. By controlling the number of rotations and direction of the limit motor 6, the distance between the two limit blocks 2 can be precisely adjusted, so that the device can be adapted to plastic products of different sizes and achieve precise positioning.

[0021] Working principle: When using this device for limiting operations in plastic product processing, the operator places the plastic product on one side of the first limiting frame 5, ensuring the product is positioned between the limiting blocks 2. Then, the operator activates the electric push rod 10 on one side of the fixed ear plate 9. The transmission end of the electric push rod 10 pushes the push rod 11, thereby moving the second limiting frame 12 towards the first limiting frame 5. Since the second limiting frame 12 has the same structure and is symmetrically arranged as the first limiting frame 5, as the second limiting frame 12 moves, its internal components, connected by the same transmission structure (limiting motor 6, double-sided threaded shaft 7, internal threaded sleeve 8, etc.),... The limiting block 2 also moves synchronously, so that the first limiting frame 5 and the second limiting frame 12 initially limit the plastic product. Then, the limiting motor 6 in the first limiting frame 5 is started. The transmission end of the limiting motor 6 drives the double-sided threaded shaft 7 to rotate. Since the threads at both ends of the double-sided threaded shaft 7 turn in opposite directions, and its outer surface is connected to two sets of internal threaded sleeves 8 by threads, when the double-sided threaded shaft 7 rotates, the two sets of internal threaded sleeves 8 will move in a straight line towards or away from each other along the inner wall of the first limiting frame 5. Since the internal threaded sleeves 8 are fixedly connected to the limiting block 2, the movement of the internal threaded sleeves 8 will synchronously drive the limiting block 2 to move. The rotation number and direction of the limiting motor 6 can precisely adjust the distance between the two limiting blocks 2, enabling the device to adapt to plastic products of different sizes and achieve precise positioning. The two limiting blocks 2 gradually approach the plastic product and contact the product surface through the rubber sleeve 3 fitted onto their outer surface. The rubber sleeve 3 is soft and elastic, allowing it to tightly conform to the surface of the plastic product. While applying limiting force, it effectively buffers pressure and avoids damage to the product. With the coordinated operation of the limiting motor 6 and the electric push rod 10, multiple limiting blocks 2 apply a uniform and stable limiting force to the plastic product, firmly fixing it in the processing position and ensuring the plastic product is securely positioned. The product will not shift or shake during processing. When the rubber sleeve 3 wears or ages after long-term use and needs to be repaired or replaced, the operator only needs to pull out the connecting pin 4 on the upper surface of the rubber sleeve 3. Since the connecting pin 4 is movably connected to the limit block 2, the rubber sleeve 3 can be separated from the limit block 2 after being pulled out, achieving quick disassembly. When replacing the new rubber sleeve 3, put it on the outer surface of the limit block 2 and then insert the connecting pin 4 to fix it. The replacement operation can be completed. The whole process is simple and quick, which makes it convenient for staff to perform daily maintenance on the protective structure of the limit device and ensure that it is always in good working condition.

[0022] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A limiting device for processing plastic products with good fixing effect, comprising a support base (1), characterized in that: A limiting block (2) is provided above the support base (1). A rubber sleeve (3) is movably sleeved on the outer surface of the limiting block (2). A connecting pin (4) is movably inserted into the upper surface of the rubber sleeve (3). The connecting pin (4) is movably connected to the limiting block (2). A first limiting frame (5) is fixedly installed on one side of the upper surface of the support base (1). A limiting motor (6) is fixedly installed on one side inside the first limiting frame (5). A double-sided threaded shaft (7) is fixedly connected to the transmission end of the limiting motor (6). The end of the double-sided threaded shaft (7) away from the limiting motor (6) is connected to the first limiting frame (5) through a bearing.

2. The limiting device for processing plastic products with good fixing effect according to claim 1, characterized in that: The outer surface of the double-sided threaded shaft (7) is connected to an internal threaded sleeve (8) by a thread. There are two sets of internal threaded sleeves (8), and the internal threaded sleeves (8) are slidably connected to the inner wall of the first limit frame (5).

3. The limiting device for processing plastic products with good fixing effect according to claim 2, characterized in that: The internal threaded sleeve (8) is fixedly connected to the limiting block (2), and a fixing ear plate (9) is fixedly provided on the side of the upper surface of the support base (1) away from the first limiting frame (5).

4. A limiting device for processing plastic products with good fixing effect according to claim 3, characterized in that: An electric push rod (10) is fixedly installed on one side of the fixed ear plate (9), and a push rod (11) is fixedly connected to the transmission end of the electric push rod (10) away from the fixed ear plate (9).

5. A limiting device for processing plastic products with good fixing effect according to claim 4, characterized in that: The end of the push rod (11) away from the electric push rod (10) is fixedly connected to a second limiting frame (12). The second limiting frame (12) is symmetrically arranged with the first limiting frame (5). The second limiting frame (12) has the same structure as the first limiting frame (5).

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