A magnet and injection molding piece compound molding machine

Abstract

The utility model belongs to injection molding part processing equipment field especially a kind of magnet and injection molding part composite forming machine, it includes injection molding platform, the top fixed mounting of injection molding platform has injection molding machine, the top detachable mounting of injection molding platform has lower mould, two positioning slots are set on the bottom inner wall of lower mould, two positioning slots's bottom inner wall are all fixedly installed with replacement pedestal, the top of two replacement pedestals is all detachable mounting and has positioning pin;The top of injection molding platform is equipped with support.The utility model can make turnover clamp arm separate from annular groove by pressing positioning pin, after rotating 90 °, old positioning pin can be taken out, after inserting new positioning pin, press and reverse rotation, turnover clamp arm is automatically clamped into annular groove, locking column is fixed synchronously, entire process does not need extra tool, greatly simplifies operation procedure, reduces equipment downtime, improves production efficiency, and the double positioning pin structure set also can enhance the stability of magnet when injection molding, prevent its deviation.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molding equipment, and in particular to a composite molding machine for magnets and injection molded parts. Background Technology

[0002] The magnet-injection molding machine is a specialized piece of equipment that integrates precise magnet positioning, injection molding, and composite curing. Its core function is to integrate magnets (such as permanent magnets or soft magnets) with a plastic substrate to create a composite component with magnetic properties. The typical workflow is as follows: first, the magnet is fixed in a pre-set position within the mold cavity using a mechanical positioning system; then, molten plastic is injected into the cavity; after pressure holding and cooling, the plastic is molded and tightly bonded to the magnet, ultimately outputting an integrated composite product. The equipment must meet requirements such as non-damaging magnet positioning, precise temperature control of injection molding parameters (to prevent magnetic performance failure), and satisfactory interface bonding strength. It is widely used in automotive electronics, smart home, and consumer electronics, for example, in the production of magnetic sensor housings and micro-motor magnetic components.

[0003] When placing magnets, positioning pins are often used to position them. However, in existing equipment, replacing positioning pins requires disassembling multiple fixing parts of the mold, such as unscrewing multiple fastening screws and removing the mold side cover. The operation is cumbersome and time-consuming. Workers need to use a variety of tools to repeatedly adjust the mold. This not only easily damages the mold or positioning pins due to improper operation, but also prolongs the downtime of the equipment, affecting the progress of mass production and greatly impacting work efficiency. Furthermore, traditional equipment often relies on a single positioning pin to fix the magnet. Under high temperature and pressure during injection molding, the magnet is easily displaced or falls off due to the impact of molten plastic, resulting in defects such as gaps and deformation in the composite parts.

[0004] Therefore, we propose a composite molding machine for magnets and injection molded parts to solve the above problems. Utility Model Content

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A composite molding machine for magnets and injection molded parts includes an injection molding table, an injection molding machine fixedly mounted on the top of the injection molding table, a lower mold detachably mounted on the top of the injection molding table, two positioning grooves formed on the bottom inner wall of the lower mold, replacement bases fixedly mounted on the bottom inner walls of the two positioning grooves, and positioning pins detachably mounted on the top of the two replacement bases; a bracket is provided on the top of the injection molding table, a cylinder is fixedly mounted on one side of the bracket, an upper mold is fixedly mounted on the piston end of the cylinder, and the upper mold and the lower mold are combined to form a mold cavity.

[0007] Specifically, a screw is rotatably mounted on one inner wall of the injection molding machine, and a motor slot is provided inside the injection molding machine. A servo motor is fixedly mounted on the inner side of the motor slot, and the output shaft of the servo motor is fixedly connected to the screw, so that the screw can be driven to rotate by the servo motor.

[0008] Specifically, a feed hopper is fixedly installed on the top of the injection molding machine to facilitate the addition of materials into the injection molding machine.

[0009] Specifically, a robotic arm is fixedly installed on one side of the injection molding table, and a robotic claw is fixedly installed at one end of the robotic arm. The robotic claw is used to hold a magnet, and two slots are formed at the bottom of the magnet.

[0010] Specifically, each of the two replacement bases has four flip grooves on its outer side, and a fixed shaft is fixedly installed on the inner side of each of the eight flip grooves. A flip clamping arm is rotatably sleeved on each of the eight fixed shafts. An annular groove is opened on the outer side of each of the two positioning pins. One end of each of the eight flip clamping arms is adapted to the corresponding annular groove. A hexagonal column is fixedly installed at the bottom of each of the two positioning pins.

[0011] Specifically, four guide plates are fixedly installed on the bottom inner wall of each of the two replacement bases. The same linkage metal block is slidably installed on the inner side of the four guide plates located in the same replacement base. One end of the four flipping clamps located in the same replacement base is hinged to the same linkage metal block, so that the four flipping clamps can be flipped by the linkage metal block.

[0012] Specifically, locking bases and high-strength alloy springs are fixedly installed on the bottom inner walls of the two replacement bases. The two locking bases are located inside the corresponding high-strength alloy springs, and the two high-strength alloy springs are located inside the corresponding four guide plates. The tops of the two high-strength alloy springs are fixedly connected to the bottoms of the corresponding linkage metal blocks. The high-strength alloy springs facilitate the reset of the linkage metal blocks when the positioning pins are disassembled and replaced.

[0013] Specifically, the tops of the two linked metal blocks are rotatably connected to locking pins, the bottoms of the two locking pins are fixedly fitted with locking metal blocks, the tops of the two locking pins are provided with hexagonal slots, and the two hexagonal slots are adapted to the corresponding hexagonal pins. The tops of the two locking bases are provided with locking grooves, and the two locking metal blocks are adapted to the corresponding locking grooves, which facilitates the fixing of the locking pins and prevents the high-strength alloy spring from driving the linked metal blocks to reset and releasing the clamping of the positioning pins.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: By setting up a flipping arm and a locking metal block, when replacing the positioning pin, simply press down the positioning pin to make the flipping clamping arm disengage from the annular groove, rotate 90° to remove the old positioning pin, insert the new positioning pin, press down and rotate in the opposite direction, and the flipping clamping arm will automatically lock into the annular groove. The locking pin will be fixed simultaneously. The whole process does not require additional tools, greatly simplifying the operation process, reducing equipment downtime, and improving production efficiency. In addition, the set double positioning pin structure can also enhance the stability of the magnet during injection molding and prevent it from shifting. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of a composite molding machine for magnets and injection molded parts proposed in this utility model;

[0016] Figure 2 This is a three-dimensional cross-sectional view of the injection molding machine, hopper, screw, and servo motor of a composite molding machine for magnets and injection molded parts proposed in this utility model.

[0017] Figure 3 This is a three-dimensional cross-sectional view of the lower mold of a composite molding machine for magnets and injection molded parts proposed in this utility model.

[0018] Figure 4 This is a three-dimensional structural breakdown diagram of a magnet and injection molding composite molding machine, including a replacement base, positioning pin, hexagonal column, guide plate, linkage metal block, high-strength alloy spring, fixed shaft, flipping clamping arm, locking base, locking column, and locking metal block.

[0019] Figure 5 This is a three-dimensional cross-sectional view of a replacement base for a composite molding machine for magnets and injection molded parts proposed in this utility model.

[0020] Figure 6 This is a three-dimensional cross-sectional view of the locking base, locking column, and locking metal block of a magnet and injection molding machine proposed in this utility model.

[0021] In the diagram: 1. Injection molding table; 2. Robotic arm; 3. Cylinder; 4. Upper mold; 5. Injection molding machine; 6. Feed hopper; 7. Screw; 8. Servo motor; 9. Lower mold; 10. Replacement base; 11. Positioning pin; 12. Hexagonal column; 13. Guide plate; 14. Linkage metal block; 15. High-strength alloy spring; 16. Fixed shaft; 17. Tilting gripper arm; 18. Locking base; 19. Locking column; 20. Locking metal block. Detailed Implementation

[0022] Reference Figure 1-6A composite molding machine for magnets and injection molded parts includes an injection molding table 1, an injection molding machine 5 fixedly installed on the top of the injection molding table 1, a lower mold 9 detachably installed on the top of the injection molding table 1, two positioning grooves are opened on the bottom inner wall of the lower mold 9, a replacement base 10 is fixedly installed on the bottom inner wall of each of the two positioning grooves, and a positioning pin 11 is detachably installed on the top of each of the two replacement bases 10; a bracket is provided on the top of the injection molding table 1, a cylinder 3 is fixedly installed on one side of the bracket, an upper mold 4 is fixedly installed on the piston end of the cylinder 3, and the upper mold 4 and the lower mold 9 are combined to form a mold cavity.

[0023] In this embodiment, a screw 7 is rotatably mounted on one inner wall of the injection molding machine 5. A motor slot is provided inside the injection molding machine 5. A servo motor 8 is fixedly mounted on the inner side of the motor slot. The output shaft of the servo motor 8 is fixedly connected to the screw 7, and the screw 7 can be driven to rotate by the servo motor 8.

[0024] In this embodiment, a feed hopper 6 is fixedly installed on the top of the injection molding machine 5 to facilitate the addition of materials into the injection molding machine 5.

[0025] In this embodiment, a robotic arm 2 is fixedly installed on one side of the injection molding table 1, and a robotic claw is fixedly installed on one end of the robotic arm 2. The robotic claw is used to hold a magnet, and two slots are opened on the bottom of the magnet.

[0026] In this embodiment, four flip grooves are provided on the outer side of each of the two replacement bases 10, and a fixed shaft 16 is fixedly installed on the inner side of each of the eight flip grooves. A flip clamping arm 17 is rotatably sleeved on each of the eight fixed shafts 16. An annular groove is provided on the outer side of each of the two positioning pins 11. One end of each of the eight flip clamping arms 17 is adapted to the corresponding annular groove. A hexagonal column 12 is fixedly installed on the bottom of each of the two positioning pins 11.

[0027] In this embodiment, four guide plates 13 are fixedly installed on the bottom inner walls of the two replacement bases 10. The same linkage metal block 14 is slidably installed on the inner side of the four guide plates 13 located in the same replacement base 10. One end of the four flipping clamping arms 17 located in the same replacement base 10 is hinged to the same linkage metal block 14, so that the four flipping clamping arms 17 can be flipped by the linkage metal block 14.

[0028] In this embodiment, locking bases 18 and high-strength alloy springs 15 are fixedly installed on the bottom inner walls of the two replacement bases 10. The two locking bases 18 are located inside the corresponding high-strength alloy springs 15, and the two high-strength alloy springs 15 are located inside the corresponding four guide plates 13. The top ends of the two high-strength alloy springs 15 are fixedly connected to the bottom of the corresponding linkage metal blocks 14. The high-strength alloy springs 15 facilitate the reset of the linkage metal blocks 14 when the positioning pins 11 are disassembled and replaced.

[0029] In this embodiment, the tops of the two linkage metal blocks 14 are rotatably penetrated by locking pins 19, and the bottom ends of the two locking pins 19 are fixedly installed with locking metal blocks 20. The tops of the two locking pins 19 are provided with hexagonal slots, and the two hexagonal slots are adapted to the corresponding hexagonal pins. The tops of the two locking bases 18 are provided with locking grooves, and the two locking metal blocks 20 are adapted to the corresponding locking grooves, which facilitates the fixing of the locking pins 19 and prevents the high-strength alloy spring 15 from driving the linkage metal blocks 14 to reset and release the clamping of the positioning pin 11.

[0030] Working Principle: During the composite molding of the magnet and the injection molded part, the operator first replaces the two positioning pins 11 in the lower mold 9 according to the size of the hole groove on the magnet. The operator inserts the positioning pin 11 into the positioning groove, so that the hexagonal post 12 at the bottom of the positioning pin 11 contacts the locking post 19. After assembling the two, the operator presses down on the positioning pin 11. The positioning pin 11 moves down, causing the locking post 19 and the outer linkage metal block 14 to move down. The outer side of the replacement base 10 has four flipping grooves. The inner side of each of the four flipping grooves is fixedly installed with a fixed shaft 16. Each of the four fixed shafts 16 is rotatably sleeved with a flipping clamping arm 17. One end of each of the four flipping clamping arms 17 is hinged to the same linkage metal block 14. Therefore, when the linkage metal block 14 moves down, it causes the four flipping clamping arms 17 to flip around the corresponding fixed shaft 16 as the center. The outer side of the positioning pin 11 has an annular groove. After the four flipping clamping arms 17 flip, they are locked into the inner side of the same annular groove. And when the positioning pin 11 moves down... During the process, the locking pin 19 is moved down, causing the locking metal block 20 at its bottom to slide into the locking groove opened on the top of the locking base 18. After the positioning pin 11 is limited, in order to prevent it from falling off, the operator needs to rotate the positioning pin 11. The rotation of the positioning pin 11 drives the hexagonal pin 12 to rotate, which in turn drives the locking pin 19 to rotate. The rotation of the locking pin 19 drives the locking metal block 20 to rotate in the locking groove. When the locking pin 19 rotates 90°, the locking metal block 20 abuts against the top inner wall of the locking groove, thus completing the fixation. Then, the operator operates the robotic arm 2 to align the two holes at the bottom of the magnet with the corresponding two positioning pins 11, and then assembles them. After the assembly is completed, the robotic arm 2 is reset, the cylinder 3 is started to drive the upper mold 4 to move down and combine with the lower mold 9 to form a mold cavity. At this time, the operator pours the material into the feed hopper 6 and starts the servo motor 8. The servo motor 8 starts to drive the screw 7 to rotate and transport the material into the mold cavity for composite molding of the magnet and the injection molded part.

[0031] The technological advancements of this invention compared to existing technologies are as follows: By pressing down the positioning pin 11, the flipping clamping arm 17 can be disengaged from the annular groove. After rotating 90°, the old positioning pin 11 can be removed. After inserting the new positioning pin 11, pressing down and rotating in the opposite direction will cause the flipping clamping arm 17 to automatically engage with the annular groove, and the locking post 19 will be fixed simultaneously. The entire process requires no additional tools, greatly simplifying the operation process, reducing equipment downtime, and improving production efficiency. Furthermore, the double positioning pin 11 structure can enhance the stability of the magnet during injection molding and prevent it from shifting.

Claims

1. A composite molding machine for magnets and injection molded parts, characterized in that, Includes an injection molding table (1), on the top of which an injection molding machine (5) is fixedly installed, and on the top of which a lower mold (9) is detachably installed. Two positioning grooves are opened on the bottom inner wall of the lower mold (9), and replacement bases (10) are fixedly installed on the bottom inner walls of the two positioning grooves. Positioning pins (11) are detachably installed on the top of the two replacement bases (10). The top of the injection molding station (1) is provided with a bracket, and a cylinder (3) is fixedly installed on one side of the bracket. An upper mold (4) is fixedly installed on the piston end of the cylinder (3). The upper mold (4) and the lower mold (9) are combined to form a mold cavity.

2. The composite molding machine for magnets and injection molded parts according to claim 1, characterized in that, A screw (7) is rotatably mounted on one side of the inner wall of the injection molding machine (5). A motor slot is provided inside the injection molding machine (5). A servo motor (8) is fixedly mounted on the inner side of the motor slot. The output shaft of the servo motor (8) is fixedly connected to the screw (7).

3. The composite molding machine for magnets and injection molded parts according to claim 2, characterized in that, The injection molding machine (5) is fixedly equipped with a feed hopper (6) on its top.

4. The composite molding machine for magnets and injection molded parts according to claim 1, characterized in that, A robotic arm (2) is fixedly installed on one side of the injection molding table (1), and a robotic claw is fixedly installed at one end of the robotic arm (2). The robotic claw is used to hold a magnet, and two slots are opened at the bottom of the magnet.

5. A composite molding machine for magnets and injection molded parts according to claim 1, characterized in that, Four flip grooves are provided on the outer side of each of the two replacement bases (10). A fixed shaft (16) is fixedly installed on the inner side of each of the eight flip grooves. A flip clamping arm (17) is rotatably sleeved on each of the eight fixed shafts (16). An annular groove is provided on the outer side of each of the two positioning pins (11). One end of each of the eight flip clamping arms (17) is adapted to the corresponding annular groove. A hexagonal column (12) is fixedly installed at the bottom of each of the two positioning pins (11).

6. A composite molding machine for magnets and injection molded parts according to claim 5, characterized in that, Four guide plates (13) are fixedly installed on the bottom inner wall of each of the two replacement bases (10). The same linkage metal block (14) is slidably installed on the inner side of the four guide plates (13) located in the same replacement base (10). One end of the four flipping clamps (17) located in the same replacement base (10) is hinged to the same linkage metal block (14).

7. A composite molding machine for magnets and injection molded parts according to claim 6, characterized in that, Locking bases (18) and high-strength alloy springs (15) are fixedly installed on the bottom inner walls of the two replacement bases (10). The two locking bases (18) are located inside the corresponding high-strength alloy springs (15), and the two high-strength alloy springs (15) are located inside the corresponding four guide plates (13). The tops of the two high-strength alloy springs (15) are fixedly connected to the bottom of the corresponding linkage metal blocks (14).

8. A composite molding machine for magnets and injection molded parts according to claim 7, characterized in that, The top of each of the two linked metal blocks (14) is rotatably connected to a locking pin (19), and the bottom of each of the two locking pins (19) is fixedly installed with a locking metal block (20). The top of each of the two locking pins (19) is provided with a hexagonal groove, and the two hexagonal grooves are adapted to the corresponding hexagonal pins. The top of each of the two locking bases (18) is provided with a locking groove, and the two locking metal blocks (20) are adapted to the corresponding locking grooves.

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