High-precision clamping device and material taking machine for injection molded parts

Abstract

The high-precision clamping device comprises a clamping assembly and a positioning carrier, and the clamping assembly comprises a mounting frame, a mounting plate and a plurality of clamping jaw mechanisms assembled on the mounting plate; the clamping jaw mechanism comprises a linear guide rail, a positioning block, a clamping jaw air cylinder, two connecting blocks connected to the clamping jaw air cylinder in a floating mode and two clamping jaws assembled to the connecting blocks, the linear guide rail and the positioning block are fixedly assembled to the mounting plate, the extending direction of the linear guide rail is parallel to the X-axis direction, and the axial extending direction of the positioning block is parallel to the Y-axis direction; the connecting blocks are movably arranged on the mounting plate in a penetrating mode, the two connecting blocks in the same set are assembled on the same linear guide rail in a sliding mode, and the positioning blocks are used for abutting against the two connecting blocks in the same set so as to limit the relative position of the clamping jaw air cylinder on the mounting plate in the Y-axis direction. In this way, the multiple clamping jaws can overcome the position deviation in the X-axis direction and the Y-axis direction when working synchronously, so that high-precision clamping is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of injection molding equipment technology, and in particular to a high-precision clamping device and a material handling machine for injection molded parts. Background Technology

[0002] Currently, the injection molding industry commonly uses grippers to pick up materials and directly clamps injection molded parts with pneumatic grippers. However, it is generally necessary to clamp 8 injection molded parts at the same time. Therefore, the distance between each gripping position is relatively far, which can easily cause positional deviation or misalignment when the grippers move. This can lead to a large shift in the picking position of some grippers, ultimately making it impossible to pick up and drop materials normally. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a high-precision clamping device and a material handling machine for injection molded parts. When multiple grippers work synchronously, they can overcome positional deviations in the X and Y axis directions to ensure high-precision clamping.

[0004] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0005] This invention provides a high-precision clamping device, including a clamping assembly for clamping a workpiece and a positioning carrier for positioning the workpiece. The clamping assembly includes a mounting frame for connecting to the moving end of a robot, a mounting plate mounted on the side of the mounting frame opposite to the positioning carrier, and a plurality of gripper mechanisms mounted on the mounting plate. The gripper mechanism includes a linear guide rail, a positioning block, a gripper cylinder, two connecting blocks floatingly connected to the drive ends of the gripper cylinder, and two grippers respectively mounted on the connecting blocks at the ends opposite to the gripper cylinders. The linear guide rail and the positioning block... The gripper cylinders are fixedly mounted on the side of the mounting plate near the positioning carrier, with the drive end of the gripper cylinder moving along the X-axis and the other direction perpendicular to the X-axis being the Y-axis. The linear guide rail extends parallel to the X-axis, and the axial extension direction of the positioning block is parallel to the Y-axis. The connecting block is movably inserted through the mounting plate, and two connecting blocks in the same group can be slidably mounted on the same linear guide rail. The positioning block abuts against two connecting blocks in the same group to limit the relative position of the gripper cylinder on the mounting plate in the Y-axis direction.

[0006] Furthermore, the connecting block is U-shaped and has two connecting portions spaced apart and a slider portion connected between the two connecting portions. The gripper is assembled to the slider portion. The mounting plate is provided with clearance through holes for the two connecting portions, and the connecting portions are movably inserted through the corresponding clearance through holes. The linear guide is located between the two clearance through holes, and the slider portion is slidably assembled to the linear guide.

[0007] Furthermore, the opposite ends of the slider portions of the two connecting blocks in the same group are respectively provided with positioning steps, and the axial ends of the positioning blocks are used to abut against the two positioning steps in the same group.

[0008] Furthermore, multiple gripper mechanisms are arranged at intervals on the mounting plate.

[0009] Furthermore, the positioning carrier includes a positioning plate and a plurality of positioning mechanisms disposed on the positioning plate, each positioning mechanism corresponding to one of the gripper mechanisms; the positioning mechanism includes a limiting block disposed on the positioning plate and a positioning pin disposed on the limiting block.

[0010] The present invention provides a material handling machine for injection molded parts, including a robot body and the aforementioned high-precision clamping device; the mounting frame of the high-precision clamping device is assembled on the moving end of the robot body.

[0011] The technical solution provided by this invention has the following beneficial effects:

[0012] The linear guide and the positioning block work together to ensure that the gripper cylinder drives the same group of grippers to move without positional deviation or misalignment. Therefore, when multiple grippers work synchronously, they can overcome positional deviations in the X and Y axis directions to ensure high-precision gripping and thus enable all grippers to pick up and put down materials normally. Attached Figure Description

[0013] Figure 1 The diagram shown is a schematic of the high-precision clamping device in Embodiment 1;

[0014] Figure 2 The figure shown is a cross-sectional view of the high-precision clamping device in Embodiment 1;

[0015] Figure 3 As shown Figure 2 Enlarged view of area A in the middle;

[0016] Figure 4 The diagram shown is a schematic of the clamping component in Embodiment 1;

[0017] Figure 5 As shown Figure 4 Enlarged diagram of area B. Detailed Implementation

[0018] To further illustrate the various embodiments, the present invention provides accompanying drawings. These drawings are part of the disclosure of the present invention and are mainly used to illustrate the embodiments, and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these drawings, those skilled in the art should be able to understand other possible implementations and the advantages of the present invention. Components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0019] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0020] Example 1

[0021] Reference Figures 1 to 5 Embodiment 1 provides a high-precision clamping device, including a clamping component 1 for clamping an injection molded part 3 (i.e., a clamped part) and a positioning carrier 2 for positioning the injection molded part 3, wherein the clamping component 1 and the positioning carrier 2 are arranged in an upper and lower position.

[0022] like Figure 1 As shown, the positioning carrier 2 includes a positioning plate 21 and eight positioning mechanisms 22 disposed on the positioning plate 21. Each positioning mechanism 22 includes a limiting block 221 disposed on the positioning plate 21 and a positioning pin 222 disposed on the limiting block 221, so as to accurately place the eight injection molded parts 3 at their respective placement positions on the positioning plate 21.

[0023] like Figure 1 As shown, the clamping assembly 1 includes a mounting frame 11 for connecting the moving end of the robot, a mounting plate 12 mounted on the upper side of the mounting frame 11, and eight gripper mechanisms 13 mounted on the mounting plate 12. The eight gripper mechanisms 13 are arranged at intervals on the mounting plate 12, and the positioning mechanism 22 corresponds to each gripper mechanism 13.

[0024] Specifically, such as Figures 2 to 5 As shown, each gripper mechanism 13 includes a linear guide rail 131, a positioning block 132, a gripper cylinder 133, two connecting blocks 134 floatingly connected to the drive end of the gripper cylinder 133, and two grippers 135 respectively mounted on the connecting blocks 134 away from the lower end of the gripper cylinder 133. Each linear guide rail 131 and positioning block 132 is fixedly mounted on the bottom of the mounting plate 12. The motion trajectory of the drive end of each gripper cylinder 133 is defined as the X-axis direction, and the other direction perpendicular to the X-axis direction is the Y-axis direction.

[0025] Each linear guide rail 131 extends parallel to the X-axis direction, and each positioning block 132 extends axially parallel to the Y-axis direction and perpendicular to the X-axis direction. Each connecting block 134 is movably mounted on the mounting plate 12. Two connecting blocks 134 in the same group can be slidably mounted on the same linear guide rail 131 so that the movement trajectory of each connecting block 134 and the gripper 135 is restricted to linear movement in the X-axis direction by the linear guide rail 131 in the same group. Each positioning block 132 is used to abut against the two connecting blocks 134 in the same group to restrict the relative position of the gripper cylinder 133 in the Y-axis direction of the mounting plate 12. Therefore, each gripper 135 can overcome position deviation or offset when moving in the X and Y-axis directions.

[0026] In this embodiment, as Figure 4 and Figure 5 As shown, the slider portions 137 of the two connecting blocks 134 in the same group are respectively provided with positioning steps 138 at their opposite ends in the X-axis direction. The axial ends of each positioning block 132 are respectively used to abut against the two positioning steps 138 in the same group. Therefore, when installing the gripper cylinder 133, connecting block 134 and gripper 135, by pressing the positioning steps 138 of the connecting block 134 in the same group against the positioning block 132, the clamping position in the Y direction can be ensured to be accurate. Then the installation position of the gripper cylinder 133 is also adjusted to the correct position, thereby ensuring the gripping accuracy of the gripper 135 in the Y-axis direction.

[0027] like Figure 1 and Figure 3 As shown, each connecting block 134 is U-shaped and has two connecting portions 136 spaced apart and a slider portion 137 connected between the two connecting portions 136. Each gripper 135 is fitted to the bottom of the corresponding slider portion 137, and the mounting frame 11 has a sufficiently large clearance window to ensure the movement of the gripper 135.

[0028] The mounting plate 12 has eight sets of clearance through holes 121 for accommodating two connecting parts 136. Each connecting part 136 is movably inserted through its corresponding clearance through hole 121. Each linear guide rail 131 is located between its corresponding two clearance through holes 121, and each slider part 137 is slidably mounted on its corresponding linear guide rail 131. This ensures the movement accuracy of each gripper 135 in the X-axis direction during operation, thereby ensuring the gripping accuracy of the gripper 135 in the X-axis direction. In addition, the length of each gripper 135 can be relatively short, thus improving the overall movement accuracy several times over.

[0029] The linear guide 131 and the positioning block 132 work together to ensure that the gripper cylinder 133 drives the grippers 135 of the same group to move through the connected block 134 without positional deviation or misalignment. Therefore, when multiple grippers 135 work synchronously, they can overcome positional deviations in the X and Y axis directions to ensure high-precision gripping, thereby enabling all grippers 135 to pick up and put down materials normally. This also improves the overall operational stability and reduces the difficulty of equipment debugging.

[0030] Of course, in other embodiments, the number of gripper 135 mechanisms 13 and positioning mechanisms 22 is not limited to this, and will not be described in detail here.

[0031] In addition, the high-precision clamping device in this embodiment can also clamp other materials.

[0032] Example 2

[0033] Example 2 provides a material handling machine for injection molded parts, including a robot body and a high-precision clamping device as described in Example 1, wherein the mounting frame of the high-precision clamping device is assembled on the moving end of the robot body.

[0034] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A high-precision clamping device, characterized in that: Includes a clamping assembly for gripping the clamped part and a positioning carrier for positioning the clamped part; The clamping assembly includes a mounting frame for connecting the moving end of the robot, a mounting plate mounted on the side of the mounting frame away from the positioning carrier, and a plurality of gripper mechanisms mounted on the mounting plate. The gripper mechanism includes a linear guide rail, a positioning block, a gripper cylinder, two connecting blocks that are floatingly connected to the drive ends of the gripper cylinder, and two grippers respectively mounted on the connecting blocks at the ends opposite to the gripper cylinders. The linear guide rail and the positioning block are respectively fixedly mounted on the mounting plate on the side near the positioning carrier. The movement trajectory of the drive end of the gripper cylinder is in the X-axis direction, and the other direction perpendicular to the X-axis direction is the Y-axis direction. The extension direction of the linear guide rail is parallel to the X-axis direction, and the axial extension direction of the positioning block is parallel to the Y-axis direction. The connecting block is movably inserted through the mounting plate, and two connecting blocks in the same group can be slidably assembled on the same linear guide rail; The positioning block is used to abut against two connecting blocks in the same group to limit the relative position of the gripper cylinder on the mounting plate in the Y-axis direction.

2. The high-precision clamping device according to claim 1, characterized in that: The connecting block is U-shaped and has two connecting parts spaced apart and a slider part connected between the two connecting parts. The gripper is assembled to the slider part. The mounting plate has clearance through holes for the two connecting parts, and the connecting parts are movably inserted through the corresponding clearance through holes. The linear guide is located between the two clearance through holes, and the slider part is slidably assembled to the linear guide.

3. The high-precision clamping device according to claim 2, characterized in that: The opposite ends of the sliders of the two connecting blocks in the same group are respectively provided with positioning steps, and the axial end of the positioning block is used to abut against the two positioning steps in the same group.

4. The high-precision clamping device according to any one of claims 1-3, characterized in that: Multiple gripper mechanisms are arranged at intervals on the mounting plate.

5. The high-precision clamping device according to claim 4, characterized in that: The positioning carrier includes a positioning plate and a plurality of positioning mechanisms disposed on the positioning plate, each positioning mechanism corresponding to one of the gripper mechanisms; each positioning mechanism includes a limiting block disposed on the positioning plate and a positioning pin disposed on the limiting block.

6. A material handling machine for injection molded parts, characterized in that: It includes a robot body and a high-precision clamping device as described in any one of claims 1-5; the mounting frame of the high-precision clamping device is assembled on the moving end of the robot body.

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