Mechanical hand clamp for injection molding machine
By introducing fan cooling and a multi-degree-of-freedom drive structure into the robotic gripper, the problem of deformation when gripping high-temperature materials was solved, achieving efficient cooling and flexible gripping, and improving the stability and adaptability of the gripper.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 芜湖富田电子科技有限公司
- Filing Date
- 2025-06-25
- Publication Date
- 2026-06-12
AI Technical Summary
Traditional robotic grippers lack effective cooling measures when holding high-temperature materials, which can lead to material deformation or damage, affecting product quality and dimensional accuracy.
A robotic gripper with a fan and a grid plate was designed. The fan blows air downwards through the grid plate to cool the material, and the filter plate filters impurities. Combined with motor drive, it can achieve multi-degree-of-freedom gripping and position adjustment.
It effectively prevents material deformation or damage, improves the service life and working stability of the fixture, and enhances the adaptability and work efficiency of the fixture.
Smart Images
Figure CN224348326U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of clamping technology, specifically a robotic clamping device for injection molding machines. Background Technology
[0002] In the field of injection molding production, robotic grippers are key components for the automatic grasping and handling of materials, and their performance directly affects the efficiency and quality of injection molding production.
[0003] However, after injection molding, the material is often at a high temperature. When traditional robotic grippers hold the material, due to the lack of effective cooling measures, the material may deform or be damaged due to excessive temperature. This not only affects the appearance quality of the product, but may also lead to substandard product dimensional accuracy and increase the defect rate.
[0004] Based on this, a robotic gripper for injection molding machines is now provided, which can eliminate the drawbacks of existing grippers. Utility Model Content
[0005] The purpose of this invention is to provide a robotic gripper for injection molding machines to solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] A robotic gripper for an injection molding machine includes a connecting block with a mounting cavity at its front end. A base block is fixed to the lower end of the connecting block, and a motor cavity is formed through the upper end of the base block. The mounting cavity is connected to the motor cavity, and a motor is installed inside the motor cavity. A fan is fixedly connected to the output end of the motor. A grid plate is provided directly below the fan and installed inside the motor cavity. A bottom groove 1 and a bottom groove 2 are symmetrically formed on both sides of the lower end of the base block. A driving structure for gripping materials is provided inside the bottom groove 1 and bottom groove 2, and the gripping components are located at the lower end of the base block.
[0008] Preferably, the clamping member includes a first movable block slidably installed inside the second bottom groove and a second movable block slidably installed inside the first bottom groove. The first movable block and the second movable block are respectively connected to the driving structure inside the second bottom groove and the first bottom groove. The lower ends of the first movable block and the second movable block extend to the bottom of the bottom block and are fixedly installed with a fixing plate. The fixing plate is connected to the clamping plate through a connecting part.
[0009] Preferably, the connecting part includes a damping spring and a damper disposed inside the damping spring. The two ends of the damping spring and the damper are fixedly connected to a fixed plate and a clamping plate, respectively. A guide rod is fixedly connected to the corner of the clamping plate near the fixed plate. The end of the guide rod away from the clamping plate passes through the fixed plate and is fixedly connected to a limiting plate. The outer wall of the guide rod is slidably connected to the fixed plate.
[0010] Preferably, the cross-sections of the second bottom groove, the first moving block, the first bottom groove, and the second moving block are T-shaped.
[0011] Preferably, the drive structure includes a third motor, a bidirectional screw, and a guide rod. The third motor is mounted on one end of the base block. The bidirectional screw is rotatably mounted inside the second bottom groove. The guide rod is disposed inside the first bottom groove. The output end of the third motor extends into the second bottom groove and is fixedly connected to the bidirectional screw. The two ends of the bidirectional screw are threadedly connected to two first moving blocks, and the two ends of the guide rod are slidably connected to two second moving blocks.
[0012] Preferably, two side grooves are symmetrically opened on both sides of the mounting cavity, and threaded holes are opened inside the two side grooves. The threaded holes are threadedly connected to screws. Two side plates are respectively installed inside the two side grooves through the cooperation of the threaded holes and screws. The two side plates are symmetrically fixed on both sides of the filter plate, and the size of the filter plate is adapted to the size of the mounting cavity.
[0013] Preferably, the connecting block is rotatably installed inside the U-shaped frame, a second motor is installed at one end of the U-shaped frame, the output end of the second motor extends into the U-shaped frame and is fixedly connected to the connecting block, the upper end of the U-shaped frame is fixedly connected to the output end of the first motor, the first motor is installed inside the mouth-shaped frame, and the mouth-shaped frame is installed at the upper end of the U-shaped frame.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0015] 1. This utility model uses a motor to drive a fan to rotate, and the airflow generated by the fan blows downward through a grid plate. The grid plate serves a protective function, preventing external debris from entering the motor cavity and affecting the normal operation of the fan and motor, while also ensuring uniform airflow. The airflow generated by the fan can cool the clamping components and the material being gripped, preventing the material from deforming or being damaged due to excessive temperature. It also helps to reduce the heat generated by the clamp itself during operation due to friction and other factors, thereby improving its service life and operational stability.
[0016] 2. The mounting cavity of this utility model is equipped with detachable filter plates on both sides. The filter plates can filter the air or other media entering the mounting cavity to prevent dust, impurities and other contaminants from entering the mounting cavity and motor cavity and affecting the normal operation of key components. When it is necessary to clean or replace the filter plates, simply unscrew the screws and remove the side plates to take the filter plates out of the mounting cavity. The operation is simple and convenient, which facilitates regular maintenance of the filter plates and ensures that the robot is always in good working condition.
[0017] 3. Through the coordinated operation of motor one and motor two, the fixture can achieve two degrees of freedom of rotation. Motor one drives the U-shaped frame to rotate around its output axis, causing the fixture to swing in the horizontal direction; motor two drives the connecting block to rotate within the U-shaped frame, causing the fixture to swing in the vertical direction. This allows the fixture to adapt to the material gripping needs of different positions and angles, greatly improving its working range and adaptability, and increasing work efficiency. It can be widely used in various complex injection molding production scenarios. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of this utility model.
[0019] Figure 2 This is a structural diagram of the bottom position of this utility model.
[0020] Figure 3 This is a structural diagram showing the location of the filter plate in this utility model.
[0021] Figure 4 This is a structural diagram showing the fan position of this utility model.
[0022] Figure 5 This is a schematic diagram of the drive structure and clamping component of this utility model.
[0023] Figure reference numerals: 11. Mouth-shaped frame; 12. Motor 1; 13. U-shaped frame; 14. Motor 2; 15. Connecting block; 151. Mounting cavity; 152. Side groove; 153. Threaded hole; 154. Filter plate; 155. Side plate; 156. Screw; 16. Bottom block; 161. Motor cavity; 162. Grille plate; 163. Bottom groove 1; 164. Bottom groove 2; 17. Drive structure; 171. Motor 3; 172. Bidirectional screw; 173. Guide rod; 18. Clamping component; 181. Moving block 1; 182. Moving block 2; 183. Fixing plate; 184. Damping spring; 185. Damper; 186. Clamping plate; 187. Guide rod; 188. Limiting plate; 19. Motor 4; 20. Fan. Detailed Implementation
[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0025] Example 1
[0026] In one embodiment, such as Figures 1-5As shown, a robotic gripper for an injection molding machine includes a connecting block 15. The connecting block 15 has a mounting cavity 151 at its front end. A base block 16 is fixed to the lower end of the connecting block 15. A motor cavity 161 extends through the upper end of the base block 16. The mounting cavity 151 communicates with the motor cavity 161. A motor 19 is installed inside the motor cavity 161. A fan 20 is fixedly connected to the output end of the motor 19. A grid plate 162 is positioned directly below the fan 20 and is installed inside the motor cavity 161. A bottom groove 163 and a bottom groove 164 are symmetrically formed on both sides of the lower end of the base block 16. A driving structure 17 for gripping materials is installed inside the bottom groove 163 and bottom groove 164, with a driving clamping member 18 located at the lower end of the base block 16.
[0027] In this embodiment, the drive structure 17 drives the clamping member 18 to clamp the material. After clamping is completed, the motor 19 starts to run. The output end of the motor 19 drives the fan 20 to rotate at high speed, and the airflow generated by the fan 20 is blown downward through the grid plate 162.
[0028] The grating plate 162 serves a protective function, preventing external debris from entering the motor cavity 161 and affecting the normal operation of the fan 20 and the motor 19. It also helps to even out airflow. The airflow generated by the fan 20 can cool the clamping parts 18 and the material being gripped, preventing the material from deforming or being damaged due to excessive temperature. It also helps to reduce the heat generated by friction and other factors during operation, thus improving its service life and operational stability.
[0029] Example 2
[0030] In an optional embodiment, such as Figure 2 and Figure 5 As shown, the clamping member 18 includes a first movable block 181 slidably installed inside the second bottom groove 164 and a second movable block 182 slidably installed inside the first bottom groove 163. The first movable block 181 and the second movable block 182 are respectively connected to the driving structure 17 inside the second bottom groove 164 and the first bottom groove 163. The lower ends of the first movable block 181 and the second movable block 182 extend to the bottom of the bottom block 16 and are fixedly installed with a fixing plate 183. The fixing plate 183 is connected to the clamping plate 186 through a connecting part.
[0031] It should be noted that the drive structure 17 can control the movement of moving block 181 and moving block 182 to realize the clamping and releasing operation of the clamping member 18 on the material.
[0032] The connecting part includes a damping spring 184 and a damper 185 disposed inside the damping spring 184. The two ends of the damping spring 184 and the damper 185 are fixedly connected to the fixing plate 183 and the clamping plate 186, respectively. A guide rod 187 is fixedly connected to the corner of the clamping plate 186 near the fixing plate 183. The end of the guide rod 187 away from the clamping plate 186 passes through the fixing plate 183 and is fixedly connected to the limiting plate 188. The outer wall of the guide rod 187 is slidably connected to the fixing plate 183.
[0033] It should be noted that when the clamping plate 186 contacts the material and applies clamping force, the damping spring 184 acts as a buffer to prevent excessive clamping force from damaging the material. At the same time, the damper 185 can effectively suppress the oscillation of the damping spring 184, making the clamping process more stable and ensuring that the material will not be displaced or damaged due to vibration during the clamping process.
[0034] During clamping, the guide rod 187 can slide on the fixed plate 183, providing guidance for the movement of the clamping plate 186 and ensuring that the movement direction of the clamping plate 186 is accurate. The limiting plate 188 restricts the movement range of the guide rod 187, preventing the guide rod 187 from falling off the fixed plate 183 and ensuring the normal operation of the clamping component 18.
[0035] The bottom groove 164, the moving block 181, the bottom groove 163, and the moving block 182 have a T-shaped cross-section.
[0036] It should be noted that the T-shaped structure design has many advantages. On the one hand, it can increase the contact area between the moving block and the bottom groove, improve the stability of the moving block sliding in the bottom groove, and reduce the possibility of shaking and displacement. On the other hand, the T-shaped structure can effectively prevent the moving block from coming out of the bottom groove, ensuring the reliability and safety of the clamping part 18 during operation.
[0037] Example 3
[0038] In an optional embodiment, such as Figure 2 and Figure 5 As shown, the drive structure 17 includes a motor 171, a bidirectional screw 172, and a guide rod 173. The motor 171 is mounted on one end of the base block 16. The bidirectional screw 172 is rotatably mounted inside the bottom groove 164. The guide rod 173 is disposed inside the bottom groove 163. The output end of the motor 171 extends into the bottom groove 164 and is fixedly connected to the bidirectional screw 172. Both ends of the bidirectional screw 172 are threadedly connected to two moving blocks 181, and both ends of the guide rod 173 are slidably connected to two moving blocks 182.
[0039] It should be noted that when motor 3 171 rotates forward, the bidirectional screw 172 rotates clockwise, and the two moving blocks 181 move closer together; when motor 3 171 rotates in reverse, the bidirectional screw 172 rotates counterclockwise, and the two moving blocks 181 move apart. In this way, the moving blocks 181 in the clamping member 18 are controlled, thereby providing power for the clamping action.
[0040] When the first moving block 181 moves under the action of the bidirectional screw 172, the second moving block 182 moves synchronously under the guidance of the guide rod 173, thereby realizing the clamping and releasing action of the clamping member 18 on the material. The presence of the guide rod 173 effectively avoids problems such as shaking and deviation of the second moving block 182 during movement, improving the stability and reliability of the clamping member 18.
[0041] Example 4
[0042] In an optional embodiment, such as Figure 3 As shown, two side grooves 152 are symmetrically opened on both sides of the mounting cavity 151. Each of the two side grooves 152 has a threaded hole 153 inside. The threaded hole 153 is threadedly connected to a screw 156. Two side plates 155 are respectively installed inside the two side grooves 152 through the cooperation of the threaded hole 153 and the screw 156. The two side plates 155 are symmetrically fixed on both sides of the filter plate 154. The size of the filter plate 154 is adapted to the size of the mounting cavity 151.
[0043] It should be noted that the main function of the filter plate 154 is to filter the air or other media entering the installation cavity 151, preventing dust, impurities and other contaminants from entering the cavity and affecting the normal operation of components such as the motor 19 and fan 20, thereby extending the service life of the fixture and improving its reliability and stability.
[0044] When the filter plate 154 needs to be cleaned or replaced, simply unscrew the screw 156 and remove the side plate 155 to take the filter plate 154 out of the mounting cavity 151. The operation is simple and convenient. This detachable design facilitates regular maintenance of the filter plate 154, ensuring that the clamp is always in good working condition.
[0045] Example 5
[0046] In an optional embodiment, such as Figure 1 and Figure 2As shown, the connecting block 15 is rotatably installed inside the U-shaped frame 13. A second motor 14 is installed at one end of the U-shaped frame 13. The output end of the second motor 14 extends into the U-shaped frame 13 and is fixedly connected to the connecting block 15. The upper end of the U-shaped frame 13 is fixedly connected to the output end of the first motor 12. The first motor 12 is installed inside the mouth-shaped frame 11. The mouth-shaped frame 11 is installed at the upper end of the U-shaped frame 13.
[0047] It should be noted that by controlling motor 12 and motor 24, the fixture can adapt to the material gripping needs of different positions and angles, thereby improving its working range and adaptability, and increasing the working efficiency of the fixture.
[0048] The above embodiments disclose a robotic gripper for injection molding machines, wherein the gripper position is first adjusted by motor 12 and motor 24, and after being adjusted to the designated position, the gripping member 18 is driven by the drive structure 17 to perform gripping and releasing operations on the material.
[0049] When motor 171 rotates forward, the bidirectional screw 172 rotates clockwise, and the two moving blocks 181 move towards the center to clamp the material; when motor 171 rotates in reverse, the bidirectional screw 172 rotates counterclockwise, and the two moving blocks 181 move apart to the sides to release the material.
[0050] After the clamping member 18 completes clamping the material, the motor 19 starts to run, and its output drives the fan 20 to rotate at high speed. The airflow generated by the fan 20 blows downward through the grid plate 162. The airflow generated by the fan 20 can cool the clamping member 18 and the material being gripped, preventing the material from deforming or being damaged due to excessive temperature. At the same time, it also helps to reduce the heat generated by the clamp itself during operation due to friction and other factors, thereby improving the service life and working stability of the clamp.
[0051] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A robotic gripper for an injection molding machine, characterized in that, The device includes a connecting block (15), which has an installation cavity (151) at its front end. A bottom block (16) is fixed at the lower end of the connecting block (15). A motor cavity (161) is opened through the upper end of the bottom block (16). The installation cavity (151) is connected to the motor cavity (161). A motor four (19) is installed inside the motor cavity (161). A fan (20) is fixedly connected to the output end of the motor four (19). A grid plate (162) is set directly below the fan (20). The grid plate (162) is installed inside the motor cavity (161). A bottom groove one (163) and a bottom groove two (164) are symmetrically opened on both sides of the lower end of the bottom block (16). A drive structure (17) for clamping materials is set inside the bottom groove one (163) and the bottom groove two (164). The clamping member (18) is located at the lower end of the bottom block (16).
2. The robotic gripper for an injection molding machine according to claim 1, characterized in that, The clamping member (18) includes a first movable block (181) slidably installed inside the second bottom groove (164) and a second movable block (182) slidably installed inside the first bottom groove (163). The first movable block (181) and the second movable block (182) are respectively connected to the driving structure (17) inside the second bottom groove (164) and the first bottom groove (163). The lower ends of the first movable block (181) and the second movable block (182) extend to the bottom of the bottom block (16) and are fixedly installed with a fixing plate (183). The fixing plate (183) is connected to the clamping plate (186) through a connecting part.
3. A robotic gripper for an injection molding machine according to claim 2, characterized in that, The connecting part includes a damping spring (184) and a damper (185) disposed inside the damping spring (184). The two ends of the damping spring (184) and the damper (185) are fixedly connected to the fixing plate (183) and the clamping plate (186) respectively. A guide rod (187) is fixedly connected at the corner of the clamping plate (186) near the fixing plate (183). The end of the guide rod (187) away from the clamping plate (186) passes through the fixing plate (183) and is fixedly connected to the limiting plate (188). The outer wall of the guide rod (187) is slidably connected to the fixing plate (183).
4. A robotic gripper for an injection molding machine according to claim 2, characterized in that, The cross-sections of the bottom groove 2 (164), the moving block 1 (181), the bottom groove 1 (163), and the moving block 2 (182) are T-shaped structures.
5. A robotic gripper for an injection molding machine according to claim 2, characterized in that, The drive structure (17) includes a motor (171), a bidirectional screw (172), and a guide rod (173). The motor (171) is installed at one end of the bottom block (16). The bidirectional screw (172) is rotatably installed inside the bottom groove (164). The guide rod (173) is located inside the bottom groove (163). The output end of the motor (171) extends into the bottom groove (164) and is fixedly connected to the bidirectional screw (172). The two ends of the bidirectional screw (172) are threadedly connected to two moving blocks (181) respectively. The two ends of the guide rod (173) are slidably connected to two moving blocks (182) respectively.
6. A robotic gripper for an injection molding machine according to claim 1, characterized in that, The mounting cavity (151) has two symmetrical side grooves (152) on both sides. Each of the two side grooves (152) has a threaded hole (153) inside. The threaded hole (153) is threadedly connected to a screw (156). Two side plates (155) are respectively installed inside the two side grooves (152) through the cooperation of the threaded hole (153) and the screw (156). The two side plates (155) are symmetrically fixed on both sides of the filter plate (154). The size of the filter plate (154) is adapted to the size of the mounting cavity (151).
7. A robotic gripper for an injection molding machine according to claim 1, characterized in that, The connecting block (15) is rotatably installed inside the U-shaped frame (13). A motor (14) is installed at one end of the U-shaped frame (13). The output end of the motor (14) extends into the U-shaped frame (13) and is fixedly connected to the connecting block (15). The upper end of the U-shaped frame (13) is fixedly connected to the output end of the motor (12). The motor (12) is installed inside the mouth-shaped frame (11). The mouth-shaped frame (11) is installed at the upper end of the U-shaped frame (13).