A new fixture for injection molded parts

By designing a new type of clamping mechanism that combines with a robotic arm, the problems of poor adaptability and stability of traditional clamps are solved, enabling stable gripping and efficient production of various injection molded parts.

CN224489931UActive Publication Date: 2026-07-14SHIMADA-PRECISION SUZHOU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHIMADA-PRECISION SUZHOU CO LTD
Filing Date
2025-08-08
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Traditional fixtures are difficult to adapt to injection molded parts with different structures in injection molding production. They have poor gripping stability, which can easily lead to the injection molded parts falling off or being damaged. They cannot meet the requirements of automated and high-precision injection molding post-processing, especially for injection molded parts with sprue structures.

Method used

A novel clamping device is designed, which uses symmetrically arranged gripper seats connected to the robotic arm body. Combining the flexible three-finger gripper at the sprue and the symmetrical gripping mechanism, it can adapt to various injection molded part types. Furthermore, the gripping stability and efficiency are improved through the coordinated operation of the robotic arm and multiple cylinders.

Benefits of technology

It enables stable gripping of different injection molded parts, reduces damage, adapts to the rhythm of automated production lines, and improves production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a novel clamp of injection molding part relates to novel clamp technical field, this novel clamp of injection molding part includes mechanical arm body, and the mechanical arm body front end is connected with the claw base, the claw base front end is equipped with the clamping mechanism to the symmetry, the utility model discloses, when being grabbed to injection molding part, the flexible three -fingered clamp claw with symmetry clamping mechanism can be adapted to the water gap structure through the flexible clamp claw, and can rely on symmetry clamping mechanism and adapt to different appearance injection molding part main part, and compatible multiple injection molding piece types, and expand application scenario, the sliding fit of auxiliary slide and slide hole makes the sliding seat movement stable, and the position is accurate when injection molding piece clamp claw is grabbed, and the stress is even, reduces injection molding piece damage, and promotes the stability of grabbing.
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Description

Technical Field

[0001] This utility model specifically relates to the field of novel clamping technology, and more specifically to a novel clamping fixture for injection molded parts. Background Technology

[0002] In the injection molding process, molded parts need to be precisely removed from the mold and transferred after molding. Traditional fixtures have many drawbacks, such as a single gripping method that is difficult to adapt to different injection molded parts structures; poor gripping stability, which can easily lead to the injection molded parts falling off or being damaged, affecting production efficiency and product quality. Especially for injection molded parts with sprue structures, conventional fixtures cannot efficiently coordinate the sprue removal and body clamping, making it difficult to meet the needs of automated, high-precision post-injection processing. Utility Model Content

[0003] The purpose of this utility model is to provide a novel clamp for injection molded parts. The clamping mechanism and the gripper seat are symmetrically arranged and installed with the robotic arm body, which improves the adaptability and gripping stability of the novel clamp, and makes installation convenient; thereby solving the technical problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A novel fixture for injection molded parts, comprising

[0006] The robotic arm body has a front end connected to a gripper base; the gripper base has a symmetrically mounted gripping mechanism at its front end.

[0007] The gripper base includes a gripper base plate, with two mounting and positioning holes at both the upper and lower ends of the gripper base plate. A telescopic cylinder is fixedly installed at the middle position of the rear end of the gripper base plate. The end of the telescopic cylinder is connected to the flexible three-finger gripper at the middle position of the front end of the gripper base plate through an opening at the middle position of the gripper base plate.

[0008] As a further technical solution of this utility model, the four mounting positioning holes are fixedly connected to the connecting columns, the connecting columns are located at the four corners of the mounting base, the rear end of the mounting base is fixedly connected to the robotic arm drive unit, and the lower end of the robotic arm drive unit is fixedly installed on the robotic arm base.

[0009] As a further technical solution of this utility model,

[0010] The gripper base plate is symmetrically equipped with a clamping mechanism. The clamping mechanism includes a connecting seat, which is installed on the gripper base plate and its front end is fixedly connected to a connecting plate. The connecting plate is also located at the front end of the gripper base plate.

[0011] As a further technical solution of this utility model, end plates are installed at both the upper and lower ends of the connecting plate, and auxiliary sliding rods are installed symmetrically between the upper and lower end plates.

[0012] As a further technical solution of this utility model, the front end of the connecting plate is symmetrically equipped with telescopic cylinders two, and the ends of the telescopic cylinders two are connected to their respective sliding seats. The sliding seats are provided with sliding holes symmetrically arranged on the left and right, and the sliding holes symmetrically arranged on the left and right are slidably connected to the auxiliary sliding rods symmetrically arranged on the left and right. Each of the sliding seats is equipped with injection molded part clamps.

[0013] The inner side of the injection molding part clamp is provided with an installation groove, and the inner walls of both sides of the installation groove are provided with sliding grooves. A slider is slidably installed between the two sets of sliding grooves, and the top of the slider is provided with multiple sets of locking teeth, which are right-angled triangles.

[0014] The slider has two sets of parallel guide rods running through its interior, and a return spring is sleeved on the outside of the guide rods.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In this utility model, when gripping injection molded parts, the flexible three-finger gripper of the sprue and the symmetrical clamping mechanism can adapt to the sprue structure through the flexible gripper and adapt to the body of injection molded parts with different shapes through the symmetrical clamping mechanism, thus being compatible with multiple injection molded parts and expanding the application scenarios.

[0017] 2. In this utility model, the sliding fit between the auxiliary slide rod and the slide hole allows the sliding seat to move smoothly, and the gripper of the injection molded part is accurately positioned and evenly stressed, reducing damage to the injection molded part and improving gripping stability;

[0018] 3. This utility model, relying on the robotic arm body and the collaboration of multiple cylinders, can quickly complete gripping and handling actions, adapt to the rhythm of automated production lines, and improve the efficiency of post-processing of injection molded parts; the gripper base is connected to the connecting column through the mounting positioning hole, which facilitates assembly, debugging and subsequent maintenance and replacement. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 2 This utility model Figure 1 Top view.

[0021] Figure 3 This utility model Figure 2 A bottom view.

[0022] Figure 4 This utility model Figure 1 A schematic diagram of the split structure.

[0023] Figure 5 This utility model Figure 4 Rear top view.

[0024] Figure 6 This utility model Figure 4 A schematic diagram of the split structure.

[0025] Figure 7 This utility model Figure 4 A magnified view of a portion of the image.

[0026] Figure 8 This is a schematic diagram of the structure of the injection molding part gripper in this utility model.

[0027] In the diagram: 1-robotic arm body, 2-gripper base, 3-gripping mechanism;

[0028] 11-Robotic arm base, 12-Robotic arm drive unit, 13-Mounting base plate, 14-Connecting column;

[0029] 21-Claw base plate, 22-Mounting positioning hole, 23-Telescopic cylinder, 24-Gate flexible three-finger gripper;

[0030] 31-Connecting seat, 32-Connecting plate, 33-End plate, 34-Auxiliary slide rod, 35-Telescopic cylinder II, 36-Sliding seat, 37-Sliding hole, 38-Injection molded part clamp, 381-Mounting groove, 382-Sliding groove, 383-Slider, 384-Clamping tooth, 385-Guide rod, 386-Reset spring. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-8 In this embodiment of the present invention, a novel clamp for injection molded parts includes a robotic arm body 1, the front end of which is connected to a gripper seat 2; a clamping mechanism 3 is symmetrically installed on the front end of the gripper seat 2.

[0033] The gripper base 2 includes a gripper base plate 21. Two mounting and positioning holes 22 are provided at both the upper and lower ends of the gripper base plate 21. A telescopic cylinder 23 is fixedly installed at the middle position of the rear end of the gripper base plate 21. The end of the telescopic cylinder 23 is connected to the flexible three-finger gripper 24 at the middle position of the front end of the gripper base plate 21 through the opening provided at the middle position of the gripper base plate 21.

[0034] By adopting the above technical solution, when gripping injection molded parts, the flexible three-finger gripper 24 and the symmetrical clamping mechanism 3 can adapt to the sprue structure through the flexible gripper and adapt to the body of injection molded parts with different shapes through the symmetrical clamping mechanism 3, thus being compatible with multiple injection molded parts and expanding application scenarios.

[0035] In this embodiment, the four mounting positioning holes 22 are fixedly connected to the connecting column 14. The connecting column 14 is located at the four corners of the mounting base 13. The rear end of the mounting base 13 is fixedly connected to the robotic arm drive unit 12. The lower end of the robotic arm drive unit 12 is fixedly installed on the robotic arm base 11.

[0036] By adopting the above technical solution, relying on the robotic arm body 1 and multiple cylinders in coordination, the gripping and handling actions can be completed quickly, adapting to the rhythm of the automated production line and improving the efficiency of the post-processing stage of injection molded parts production; the gripper seat 2 is connected to the connecting column 14 through the mounting positioning hole 22, which facilitates assembly, debugging and subsequent maintenance and replacement.

[0037] In this embodiment, a clamping mechanism 3 is symmetrically mounted on the gripper base plate 21. The clamping mechanism 3 includes a connecting seat 31, which is mounted on the gripper base plate 21 and its front end is fixedly connected to a connecting plate 32. The connecting plate 32 is also located at the front end of the gripper base plate 21.

[0038] The connecting plate 32 is equipped with end plates 33 at both the upper and lower ends, and auxiliary sliding rods 34 are symmetrically installed between the upper and lower end plates 33.

[0039] The connecting plate 32 is symmetrically equipped with telescopic cylinders 35 at its front end. The ends of the telescopic cylinders 35 are connected to their respective sliding seats 36. The sliding seats 36 are symmetrically provided with sliding holes 37. The symmetrically provided sliding holes 37 are slidably connected with the symmetrically provided auxiliary sliding rods 34. Each sliding seat 36 is equipped with a molded part clamp 38.

[0040] By adopting the above technical solution, the sliding cooperation between the auxiliary slide bar 34 and the sliding hole 37 allows the sliding seat 36 to move smoothly, and the injection molded part gripper 38 to be positioned accurately and subjected to uniform force when gripping, thereby reducing damage to the injection molded part and improving gripping stability.

[0041] In this embodiment, the inner side of the injection molded part clamp 38 is provided with an installation groove 381, and the inner walls of both sides of the installation groove 381 are provided with sliding grooves 382. A slider 383 is slidably installed between the two sets of sliding grooves 382, ​​and the top of the slider 383 is provided with multiple sets of locking teeth 384, wherein the locking teeth 384 are right-angled triangles.

[0042] Furthermore, two sets of parallel guide rods 385 pass through the interior of the slider 383, and a return spring 386 is sleeved on the outer side of the guide rods 385.

[0043] By adopting the above technical solution, when the injection molded part clamping claw 38 clamps the injection molded part, due to the inconsistent thickness of the injection molded part, the injection molded part can be clamped between the upper and lower ends of the injection molded part clamping claw 38 during use. Through the joint action of the return spring 386 and the guide rod 385, the slider 383 is pushed to move inside the slide groove 382, ​​thereby changing its clamping width and facilitating the operation process.

[0044] The working principle of this utility model is as follows: the robotic arm body 1 serves as the power execution end, and the robotic arm drive unit 12 drives the mounting base plate 13. The four corner connecting columns 14 of the mounting base plate 13 are adapted to the mounting positioning holes 22 of the gripper base plate 21 of the gripper seat 2 to achieve precise positioning and position adjustment of the gripper seat 2.

[0045] During operation, the telescopic cylinder 23 at the rear end of the gripper base plate 21 is activated first. Its end passes through the opening in the gripper base plate 21 and pushes the flexible three-finger gripper 24 at the front gate of the injection molded part close to the gate. The flexible three-finger gripper 24 fits and holds the gate with the help of the flexible structure. Then the telescopic cylinder 23 retracts and pulls the injection molded part smoothly out of the mold or other initial position. After the injection molded part is pulled out, the clamping mechanism 3 symmetrically arranged on the gripper base plate 21 starts to work. The connecting seat 31 and the connecting plate 32 provide the installation base. The telescopic cylinder 35 drives the sliding seat 36 to move along the auxiliary sliding rod 34 towards the body of the injection molded part, which drives the injection molded part gripper 38 to clamp the body of the injection molded part from both sides, completing the secondary fixation and providing stable support for subsequent handling and processing.

[0046] When gripping injection molded parts, the flexible three-finger gripper 24 and the symmetrical clamping mechanism 3 can adapt to the sprue structure through the flexible gripper and adapt to the body of injection molded parts with different shapes through the symmetrical clamping mechanism 3, which is compatible with a variety of injection molded parts and expands the application scenarios.

[0047] The sliding engagement between the auxiliary slide bar 34 and the slide hole 37 ensures smooth movement of the slide seat 36, and the injection molded part gripper 38 is positioned accurately and subjected to uniform force when gripping, reducing damage to the injection molded part and improving gripping stability.

[0048] Relying on the robotic arm body 1 and the collaboration of multiple cylinders, it can quickly complete gripping and handling actions, adapt to the rhythm of automated production lines, and improve the efficiency of post-processing of injection molded parts; the gripper seat 2 is connected to the connecting column 14 through the mounting positioning hole 22, which facilitates assembly, debugging and subsequent maintenance and replacement.

[0049] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0050] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel fixture for injection molded parts, characterized in that: include The robotic arm body (1) is connected to the gripper seat (2) at its front end; the gripper seat (2) is symmetrically equipped with a gripping mechanism (3) at its front end. The gripper base (2) includes a gripper base plate (21), which has two mounting and positioning holes (22) at both the upper and lower ends. A telescopic cylinder (23) is fixedly installed at the middle position of the rear end of the gripper base plate (21). The end of the telescopic cylinder (23) is connected to the flexible three-finger gripper (24) at the middle position of the front end of the gripper base plate (21) through the opening left at the middle position of the gripper base plate (21).

2. The novel fixture for injection molded parts according to claim 1, characterized in that: The four mounting and positioning holes (22) are fixedly connected to the connecting column (14). The connecting column (14) is located at the four corners of the mounting base (13). The rear end of the mounting base (13) is fixedly connected to the robotic arm drive unit (12). The lower end of the robotic arm drive unit (12) is fixedly installed on the robotic arm base (11).

3. The novel fixture for injection molded parts according to claim 1, characterized in that: The clamping base plate (21) is symmetrically equipped with clamping mechanisms (3). The clamping mechanism (3) includes a connecting seat (31), which is installed on the clamping base plate (21) and its front end is fixedly connected to a connecting plate (32). The connecting plate (32) is also located at the front end of the clamping base plate (21).

4. The novel fixture for injection molded parts according to claim 3, characterized in that: The connecting plate (32) is equipped with end plates (33) at both the upper and lower ends, and auxiliary slide rods (34) are installed symmetrically between the upper and lower end plates (33).

5. The novel fixture for injection molded parts according to claim 4, characterized in that: The front end of the connecting plate (32) is symmetrically equipped with telescopic cylinders (35), and the ends of the telescopic cylinders (35) are connected to their respective sliding seats (36). The sliding seats (36) are symmetrically provided with sliding holes (37), and the symmetrically provided sliding holes (37) are slidably connected with the symmetrically provided auxiliary sliding rods (34). The sliding seats (36) are equipped with injection molded part clamps (38).

6. The novel fixture for injection molded parts according to claim 5, characterized in that: The inner side of the injection molded part clamp (38) is provided with an installation groove (381), and the inner walls on both sides of the installation groove (381) are provided with sliding grooves (382). A slider (383) is slidably installed between the two sets of sliding grooves (382), and the top of the slider (383) is provided with multiple sets of locking teeth (384), and the locking teeth (384) are right-angled triangles.

7. The novel fixture for injection molded parts according to claim 6, characterized in that: The slider (383) has two sets of parallel guide rods (385) running through its interior, and a return spring (386) is sleeved on the outside of the guide rods (385).