Quick-change mold for injection molding machine

Abstract

The application relates to the field of injection molds, and discloses a quick-change mold for an injection molding machine, which comprises a movable mold plate, a fixed mold plate, a movable mold core and a fixed mold core. The fixed mold plate is provided with an upper fixed mold frame and a lower fixed mold frame, the fixed mold core is slidably and detachably arranged between the upper fixed mold frame and the lower fixed mold frame, and the bottom end of the lower fixed mold frame is provided with a fixed mold locking mechanism. The movable mold plate is provided with an upper movable mold frame and a lower movable mold frame, the movable mold core is slidably and detachably arranged between the upper movable mold frame and the lower movable mold frame, and the bottom end of the lower movable mold frame is provided with a movable mold locking mechanism. The application has the advantages that the fixed mold core and the movable mold core can be taken out in the mold through the sliding mode, the fixed mold core is locked and unlocked through the fixed mold locking mechanism, the movable mold core is locked and unlocked through the movable mold locking structure, when the mold is replaced, the mold does not need to be detached from the injection molding machine, the movable mold core and the fixed mold core can also be replaced, and therefore the replacement of the injection mold is more convenient, fast and stable.

Description

Technical Field

[0001] This application relates to the field of injection molds, and more particularly to a quick-change mold for injection molding machines. Background Technology

[0002] When mass-producing plastic products, each shape requires a corresponding mold. Molten plastic material is poured into the mold, and then the mold is cooled to obtain the finished product.

[0003] Currently, injection molds consist of a fixed mold plate and a movable mold plate, both bolted to the injection molding machine. A fixed mold core is bolted to the fixed mold plate, and a movable mold core is bolted to the movable mold plate. The injection molding machine drives the movable mold plate to move, which in turn moves the movable mold core. The movable mold core then comes into contact with the fixed mold core, forming an injection cavity at the contact surface. Plastic material is injected into the injection cavity, and after the plastic material cools, the finished product is obtained.

[0004] When production of one product is completed and it's time to switch to producing another, workers must first remove the injection mold from the injection molding machine. Then, they must disassemble the mold, remove the fixed mold core from the fixed platen, remove the moving mold core from the moving platen, install the fixed and moving mold cores for the other product, reassemble the mold, and finally reinstall it on the injection molding machine. The injection mold replacement process is extremely cumbersome, time-consuming, and the repeated disassembly and reassembly of the mold increases the risk of errors during installation and removal. Summary of the Invention

[0005] To address the problem of extremely cumbersome injection mold changes, this application provides a quick-change mold for injection molding machines.

[0006] This application provides a quick-change mold for an injection molding machine, which adopts the following technical solution:

[0007] A quick-change mold for an injection molding machine includes a moving mold plate and a fixed mold plate, as well as a moving mold core and a fixed mold core, all mounted on the injection molding machine. The moving mold core has an injection cavity on its side wall. The fixed mold plate and the fixed mold core have injection channels communicating with the injection cavity. An upper fixed mold frame and a lower fixed mold frame are mounted on the side wall of the fixed mold plate. The fixed mold core is slidably and detachably mounted between the upper and lower fixed mold frames. The bottom end of the lower fixed mold frame is provided with a fixed mold locking mechanism for locking and unlocking the fixed mold core. Similarly, the moving mold plate has an upper moving mold frame and a lower moving mold frame on its side wall. The moving mold core is slidably and detachably mounted between the upper and lower moving mold frames. The bottom end of the lower moving mold frame is provided with a moving mold locking mechanism for locking and unlocking the moving mold core.

[0008] By adopting the above technical solution, molten plastic material is injected into the injection cavity through the injection channel. When mold replacement is required, the fixed mold core is unlocked using the fixed mold locking mechanism. The fixed mold core is then slid within the upper and lower fixed mold frames to remove it from the mold. Another fixed mold core is then slid into the upper and lower fixed mold frames and locked in place using the fixed mold locking mechanism, thus completing the replacement of the fixed mold core. Similarly, the moving mold core is unlocked using the moving mold locking mechanism. The moving mold core is then slid within the upper and lower moving mold frames to remove it from the mold. Another moving mold core is then slid into the upper and lower moving mold frames and locked in place using the moving mold locking mechanism, thus completing the replacement of the moving mold core. This design allows for mold replacement without removing the mold from the injection molding machine, enabling the replacement of both the fixed and moving mold cores, making mold replacement more convenient, faster, and more stable.

[0009] Preferably, the fixed mold locking mechanism includes a first outer cover, a first slider, a first pull rod, a first elastic element, a first inclined lifting block, and a first lifting rod. The first outer cover is fixedly disposed at the bottom end of the lower fixed mold frame. The first slider is slidably disposed inside the first outer cover. The first pull rod slidably passes through the first outer cover and is fixedly connected to the first slider. The first elastic element is located on the side of the slider near the first pull rod. The two ends of the first elastic element abut against the inner wall of the first outer cover and the side wall of the first slider, respectively. The first inclined lifting block is disposed on the side wall of the first slider away from the first pull rod. The end of the first inclined lifting block away from the first slider is inclined downward. A first inclined lifting groove is provided in the first lifting rod, and the first inclined lifting block is slidably inserted into the first inclined lifting groove and drives the first lifting rod to move up and down. The top end of the first lifting rod passes through the first outer cover and the lower fixed mold frame and is inserted and fixed to the bottom end of the fixed mold core.

[0010] By adopting the above technical solution, when the fixed mold core needs to be replaced, pulling the first pull rod causes the first pull rod to move via the first slider, which in turn moves the first inclined lifting block. The first inclined lifting block moves within the first inclined lifting groove of the first lifting rod, thereby causing the first lifting rod to descend. At this time, the top of the first lifting rod slides out of the fixed mold core, thus releasing the lock on the fixed mold core. When the first slider moves, it compresses the first elastic element, causing the elastic element to deform and store elastic potential energy. When the fixed mold core replacement is complete, releasing the first pull rod releases the elastic potential energy and pushes the first slider to move back to its original position. The first slider then moves the first inclined lifting block, which in turn drives the first lifting rod to rise. The top of the first lifting rod is inserted and fixed to the bottom of the fixed mold core, thus locking and fixing the fixed mold core. With this configuration, pulling the first pull rod unlocks the fixed mold core, and releasing the first pull rod automatically locks the fixed mold core, making locking and unlocking the fixed mold core more convenient and faster.

[0011] Preferably, the moving mold locking mechanism includes a second outer cover, a second slider, a second pull rod, a second elastic element, a second inclined lifting block, and a second lifting rod. The second outer cover is fixedly disposed at the bottom end of the lower moving mold frame. The second slider is slidably disposed inside the second outer cover. The second pull rod slidably passes through the second outer cover and is fixedly connected to the second slider. The second elastic element is located on the side of the slider near the second pull rod. The two ends of the second elastic element abut against the inner wall of the second outer cover and the side wall of the second slider, respectively. The second inclined lifting block is disposed on the side wall of the second slider away from the second pull rod. The end of the second inclined lifting block away from the second slider is inclined downward. A second inclined lifting groove is provided in the second lifting rod, and the second inclined lifting block is slidably inserted into the second inclined lifting groove and drives the second lifting rod to move up and down. The top end of the second lifting rod passes through the second outer cover and the lower moving mold frame and is inserted and fixed to the bottom end of the moving mold core.

[0012] By adopting the above technical solution, when the moving mold core needs to be replaced, the second pull rod is pulled. The second pull rod, through the second slider, drives the second inclined lifting block to move. The second inclined lifting block moves within the second inclined lifting groove of the second lifting rod, thereby causing the second lifting rod to descend. At this time, the top of the second lifting rod slides out of the moving mold core, thus releasing the lock on the moving mold core. When the second slider moves, it compresses the second elastic element. The second elastic element deforms under compression and stores elastic potential energy. When the moving mold core replacement is completed, the second pull rod is released. The second elastic element releases its elastic potential energy and pushes the second slider to move and reset. The second slider drives the second inclined lifting block to move, which in turn drives the second lifting rod to rise. The top of the second lifting rod is inserted and fixed to the bottom of the moving mold core, thereby locking and fixing the moving mold core. With this configuration, pulling the second pull rod unlocks the moving mold core, and releasing the second pull rod automatically locks the moving mold core, making the locking and unlocking of the moving mold core more convenient and quick.

[0013] Preferably, the upper fixed mold frame and the lower fixed mold frame are provided with first guide grooves on their adjacent side walls, and the fixed mold core is adapted to slide in the two first guide grooves; the upper moving mold frame and the lower moving mold frame are provided with second guide grooves on their adjacent side walls, and the moving mold core is adapted to slide in the two second guide grooves.

[0014] By adopting the above technical solution, when the fixed mold core is disassembled, it slides in the first guide groove. The first guide groove guides the movement of the fixed mold core. After the fixed mold core is installed, the first guide groove positions the fixed mold core along the width direction of the fixed mold core, thereby making the installation of the fixed mold core more accurate. When the moving mold core is disassembled, it slides in the second guide groove. The second guide groove guides the movement of the moving mold core. After the moving mold core is installed, the second guide groove positions the moving mold core along the width direction of the moving mold core, thereby making the installation of the moving mold core more accurate.

[0015] Preferably, heat dissipation grooves are provided in the upper fixed mold frame, lower fixed mold frame, upper moving mold frame and lower moving mold frame. The upper fixed mold frame, lower fixed mold frame, upper moving mold frame and lower moving mold frame are provided with partitions in the middle of the heat dissipation grooves along the length of the heat dissipation grooves. The partitions divide the heat dissipation grooves into liquid inlet channels and liquid outlet channels. One end of the liquid inlet channel and the liquid outlet channel is open and the other end is connected to each other.

[0016] By adopting the above technical solution, when the molten plastic material is injected into the injection cavity, the liquid supply equipment injects coolant into the upper fixed mold frame, lower fixed mold frame, upper moving mold frame and lower moving mold frame through the liquid inlet channel. The coolant then flows back into the liquid supply equipment through the liquid outlet channel, thereby realizing the cyclic cooling of the moving mold core and the fixed mold core, so that the product can be formed quickly.

[0017] Preferably, guide plates are provided on both the upper and lower sides of the sidewall of the moving mold plate, and mounting plates are provided on the side of the two guide plates away from the moving mold plate. The upper moving mold frame and the lower moving mold frame are both fixedly mounted on the sidewall of the mounting plate away from the guide plates. A push plate is slidably arranged between the two guide blocks, and a push block is provided on the sidewall of the push plate. The push block slides through the moving mold plate. Multiple push rods are provided on the side of the push plate away from the push block. An ejector pin is slidably arranged in the sidewall of the moving mold core away from the fixed mold core. The push rod abuts against the ejector pin and pushes the ejector pin into the injection cavity.

[0018] By adopting the above technical solution, after the product is formed, the injection molding machine drives the moving mold plate to move. The moving mold plate drives the mounting plate to move through the guide plate. The mounting plate drives the moving mold core to move through the upper and lower moving mold frames, so that the moving mold core separates from the fixed mold core. The injection molding machine then drives the push plate to move through the push block. The push plate pushes the ejector pin to move in the moving mold core through the push rod. The ejector pin slides into the injection cavity and ejects the product out of the injection cavity, thereby completing the automatic demolding of the product.

[0019] Preferably, the fixed mold core has a receiving groove on the side wall near the push rod for accommodating the ejector pin. The fixed mold core is detachably provided with a mounting block at the opening of the receiving groove. The ejector pin includes a first pin body, a second pin body, and a retaining ring. The first pin body and the second pin body are respectively coaxially arranged on opposite sides of the retaining ring. The first pin body is slidably disposed in the mounting block and abuts against the push rod. The second pin body slides through the moving mold core and ejects the product from the injection cavity. An elastic reset member is provided in the receiving groove of the fixed mold core. One end of the elastic reset member abuts against the bottom wall of the receiving groove, and the other end abuts against the retaining ring. After the ejector pin ejects the product, the elastic reset member drives the ejector pin to move and reset.

[0020] By adopting the above technical solution, when the product needs to be demolded, the push rod abuts against and pushes the first needle body. The first needle body pushes the second needle body to move through the retaining ring. The second needle body moves into the injection cavity and pushes the product to be demolded. When the push ring moves, the push ring squeezes the elastic reset component and causes it to deform. When the product is demolded and the push rod moves to reset, the elastic reset component releases its elastic potential energy and pushes the retaining ring to move. The retaining ring then drives the second needle body to slide out of the injection cavity, thereby automatically resetting the ejector pin.

[0021] Preferably, the fixed mold plate has a first box at the end away from the fixed mold core, a first top post is slidably disposed in the first box, the first top post slides out of the first box and abuts against the fixed mold core, and a third elastic element is disposed in the first box for driving the first top post to press against the fixed mold core; the mounting plate has a second box at the end away from the moving mold core, a second top post is slidably disposed in the second box, the second top post slides out of the second box and abuts against the moving mold core, and a fourth elastic element is disposed in the second box for driving the second top post to press against the moving mold core.

[0022] By adopting the above technical solution, during the sliding installation process, the fixed mold core abuts against the first top post and pushes the first top post into the first box. The first top post moves and pushes the third elastic element to deform. When the fixed mold core is installed and locked, the third elastic element acts on the first top post and makes the first top post press against the fixed mold core, thereby positioning the length direction of the fixed mold core and making the installation of the fixed mold core more accurate. During the sliding installation process, the moving mold core abuts against the second top post and pushes the second top post into the second box. The second top post moves and pushes the fourth elastic element to deform. When the moving mold core is installed and locked, the fourth elastic element acts on the second top post and makes the second top post press against the moving mold core, thereby positioning the length direction of the moving mold core and making the installation of the moving mold core more accurate.

[0023] Preferably, the first pull rod is rotatably mounted on the first slider, and a stop bar is provided on the outer side wall of the first pull rod along its own axis. A through hole is provided inside the first outer cover, and the stop bar is slidably mounted in the through hole. When the fixed mold locking mechanism unlocks the fixed mold core, the stop bar slides out of the through hole and is located outside the first outer cover. The first pull rod rotates and causes the stop bar to abut against the outer side wall of the first outer cover.

[0024] By adopting the above technical solution, when the fixed mold core is unlocked using the fixed mold locking mechanism, pulling the first pull rod causes the stop bar to slide out of the through-hole. At this point, rotating the first pull rod causes the stop bar to rotate outside the first outer cover. Releasing the first pull rod releases the elastic potential energy of the first elastic element, causing the stop bar to abut against the first outer cover. This limits the first pull rod, preventing it from automatically resetting. After the worker completes the fixed mold core replacement, rotating the first pull rod causes the stop bar to rotate to the through-hole. The stop bar then slides into the through-hole, resetting the first pull rod and locking the fixed mold core. With this design, when replacing the fixed mold core, the worker does not need to continuously pull the first pull rod; rotating it locks the rod, and rotating it again unlocks it, facilitating the replacement of the fixed mold core.

[0025] Preferably, a fixed mold tie rod is fixedly provided on the outer side wall of the fixed mold core, and a moving mold tie rod is fixedly provided on the outer side wall of the moving mold core.

[0026] By adopting the above technical solution, when the fixed mold core is unlocked, the fixed mold pull rod can be used to facilitate the sliding removal of the fixed mold core from the mold, and when the moving mold core is unlocked, the moving mold pull rod can be used to facilitate the sliding removal of the moving mold core from the mold.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. By using a sliding mechanism, the fixed mold core and the moving mold core can be removed from the mold. A fixed mold locking mechanism is used to lock and unlock the fixed mold core, and a moving mold locking structure is used to lock and unlock the moving mold core. When changing the mold, it is not necessary to remove the mold from the injection molding machine, and the moving mold core and the fixed mold core can be replaced. This makes the replacement of injection molds more convenient, faster and more stable.

[0029] 2. By using the first guide groove and the second guide groove to position the fixed mold core and the moving mold core in the width direction, the installation of the fixed mold core and the moving mold core is made more precise;

[0030] 3. By using the first and second ejector pins to position the fixed mold core and the moving mold core along their length, the installation of the fixed mold core and the moving mold core becomes more precise. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the quick-change mold in Embodiment 1 of this application;

[0032] Figure 2 This is an exploded view of the overall structure of the quick-change mold in Embodiment 1 of this application;

[0033] Figure 3This is a cross-sectional view of the quick-change mold in Embodiment 1 of this application, highlighting the fixed mold locking mechanism;

[0034] Figure 4 This is a cross-sectional view of the quick-change mold in Embodiment 1 of this application, highlighting the moving mold locking mechanism;

[0035] Figure 5 This is a schematic diagram of the reverse overall structure of the quick-change mold in Embodiment 1 of this application;

[0036] Figure 6 This is an exploded sectional view of the quick-change mold in Embodiment 1 of this application, highlighting the push rod.

[0037] Figure 7 This is a partial structural cross-sectional view of the quick-change mold in Embodiment 1 of this application;

[0038] Figure 8 This application Figure 7 Enlarged view of point A in the middle;

[0039] Figure 9 This is a partial structural cross-sectional view of the quick-change mold in Embodiment 2 of this application.

[0040] Explanation of reference numerals in the attached drawings: 1. Moving mold plate; 2. Fixed mold plate; 3. Moving mold core; 4. Fixed mold core; 5. Injection cavity; 6. Injection channel; 7. Upper fixed mold frame; 8. Lower fixed mold frame; 9. Fixed mold locking mechanism; 91. First outer cover; 92. First slider; 93. First tie rod; 94. First elastic element; 95. First tilting lifting block; 96. First lifting rod; 10. Upper moving mold frame; 11. Lower moving mold frame; 12. Moving mold locking mechanism; 121. Second outer cover; 122. Second slider; 123. Second tie rod; 124. Second elastic element; 125. Second tilting lifting block; 126. Second lifting rod; 15. First guide groove; 1 6. Second guide groove; 17. Heat dissipation groove; 171. Liquid inlet channel; 172. Liquid outlet channel; 18. Guide plate; 19. Mounting plate; 20. Push plate; 21. Push block; 22. Push rod; 23. Ejector pin; 231. First needle body; 232. Second needle body; 233. Retaining ring; 24. Receiving groove; 25. Mounting block; 26. Elastic reset component; 27. First box body; 28. First ejector pin; 29. ​​Third elastic component; 30. Second box body; 31. Second ejector pin; 33. Fourth elastic component; 34. Stop bar; 35. Through hole; 36. Fixed mold tie rod; 37. Moving mold tie rod; 38. Crossbeam; 39. Lifting lug; 40. Partition plate. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0042] This application discloses a quick-change mold for an injection molding machine.

[0043] Example 1:

[0044] Reference Figure 1 A quick-change mold for an injection molding machine includes a movable mold plate 1 and a fixed mold plate 2 fixedly mounted on the injection molding machine, a movable mold core 3 mounted on the movable mold plate 1, and a fixed mold core 4 mounted on the fixed mold plate 2. An upper fixed mold frame 7 and a lower fixed mold frame 8 are bolted to the side wall of the fixed mold plate 2 near the movable mold plate 1. The upper fixed mold frame 7 is located directly above the lower fixed mold frame 8, and the length of the lower fixed mold frame 8 is greater than the length of the upper fixed mold frame 7. The fixed mold core 4 is slidably mounted between the upper fixed mold frame 7 and the lower fixed mold frame 8. A first guide groove 15 is formed along the length direction of the bottom wall of the upper fixed mold frame 7 and the top wall of the lower fixed mold frame 8, and the fixed mold core 4 is slidably mounted within the first guide groove 15.

[0045] A fixed mold core 4 is fixedly mounted on its longitudinal end with a fixed mold tie rod 36. The fixed mold core 4 can be pulled out from the upper fixed mold frame 7 and the lower fixed mold frame 8 using the fixed mold tie rod 36. The first guide groove 15 guides the movement of the fixed mold core 4, making its movement more stable. A fixed mold locking mechanism 9 is installed at the bottom of the lower fixed mold frame 8. The fixed mold locking mechanism 9 can lock and unlock the fixed mold core 4. When the fixed mold locking mechanism 9 is used to lock and fix the fixed mold core 4, it can be installed in the injection mold; when the fixed mold locking mechanism 9 is used to unlock the fixed mold core 4, it can be pulled out of the injection mold and replaced using the fixed mold tie rod 36.

[0046] Reference Figure 1 and 2 Guide plates 18 are bolted to both the upper and lower sides of the fixed template 2 near its sidewall. Mounting plates 19 are fixed to the sidewalls of the two guide plates 18 away from the fixed template 2. Upper moving mold frame 10 and lower moving mold frame 11 are bolted to the upper and lower sides of the mounting plates 19 near the sidewall of the fixed template 2, respectively. The lower moving mold frame 11 is longer than the upper moving mold frame 10. The moving mold core 3 is slidably installed between the upper moving mold frame 10 and the lower moving mold frame 11. A second guide groove 16 is formed along the length of both the bottom wall of the upper moving mold frame 10 and the top wall of the lower moving mold frame 11, and the moving mold core 3 is slidably installed within the second guide groove 16.

[0047] A moving mold core 3 is fixedly mounted on its longitudinal end with a moving mold tie rod 37. The moving mold core 3 can be pulled out from the upper moving mold frame 10 and the lower moving mold frame 11 using the moving mold tie rod 37. The second guide groove 16 guides the movement of the moving mold core 3, making its movement more stable. A moving mold locking mechanism 12 is installed at the bottom of the lower moving mold frame 11. The moving mold locking mechanism 12 can lock and unlock the moving mold core 3. When the moving mold locking mechanism 12 is used to lock and fix the moving mold core 3, it can be installed in the injection mold. When the moving mold locking mechanism 12 is used to unlock the moving mold core 3, it can be pulled out of the injection mold and replaced using the moving mold tie rod 37.

[0048] When changing the injection mold, there is no need to remove the injection mold from the injection molding machine. Simply use the fixed mold unlocking mechanism and the moving mold structure mechanism to unlock them, and the fixed mold core 4 and the moving mold core 3 can be extracted from the injection mold and replaced, making the replacement of the injection mold more convenient, faster and more stable.

[0049] Reference Figure 3 Specifically, the fixed mold locking mechanism 9 includes a first outer cover 91, a first slider 92, a first pull rod 93, a first elastic element 94, a first tilting lifting block 95, and a first lifting rod 96. The first outer cover 91 is fixedly installed on the bottom wall of the lower fixed mold frame 8. The first slider 92 is slidably installed inside the first outer cover 91 in a horizontal direction. The first pull rod 93 is fixedly installed on one side wall of the first slider 92 in a horizontal direction, and the first pull rod 93 slides through the first outer cover 91 and extends to the outside of the second outer cover 121. The first elastic element 94 is located on the side of the first slider 92 near the first pull rod 93, and the two ends of the first elastic element 94 abut against the side wall of the first slider 92 and the inner side wall of the first outer cover 91, respectively. In this application, the first elastic element 94 can be a spring.

[0050] The first tilting lifting block 95 is fixedly installed on the side wall of the first slider 92 away from the first pull rod 93, and the end of the first tilting lifting block 95 away from the first slider 92 is tilted downward. The first lifting rod 96 slides through the first outer cover 91 and the lower fixed mold frame 8, and the top end of the first lifting rod 96 is inserted and fixed to the bottom wall of the fixed mold core 4. The portion of the first lifting rod 96 located inside the first outer cover 91 has a first tilting lifting groove, the height of the end of the first tilting lifting groove near the first slider 92 is greater than the height of the end away from the first slider 92, and the first tilting lifting block 95 is slidably installed in the first tilting lifting groove.

[0051] When it is necessary to disassemble and remove the fixed mold core 4, face to the left (refer to...). Figure 3(Direction) Pulling the first pull rod 93 causes the first pull rod 93 to move the first tilting lifting block 95 to the left via the first slider 92. The first tilting lifting block 95 moves within the first tilting lifting groove, thereby driving the first lifting rod 96 to descend. This causes the top of the first lifting rod 96 to disengage from the fixed mold core 4, thus unlocking the fixed mold core 4. At this point, the fixed mold core 4 can be pulled out and removed from the injection mold.

[0052] When the first slider 92 moves to the left, it compresses the first elastic element 94 and causes it to contract and deform. When it is necessary to install the fixed mold core 4, the fixed mold core 4 is inserted between the upper fixed mold frame 7 and the lower fixed mold frame 8. The first pull rod 93 is released, the first elastic element 94 releases its elastic potential energy and pushes the first slider 92 to the right. The first slider 92 drives the first tilting lifting block 95 to move, thereby driving the first lifting rod 96 to rise. The top end of the first lifting rod 96 moves and inserts into the bottom of the fixed mold core 4, which can quickly lock and fix the fixed mold core 4.

[0053] Reference Figure 4 Specifically, the moving mold locking mechanism 12 includes a second outer cover 121, a second slider 122, a second pull rod 123, a second elastic element 124, a second tilting lifting block 125, and a second lifting rod 126. The second outer cover 121 is fixedly installed on the bottom wall of the lower moving mold frame 11. The second slider 122 is slidably installed inside the second outer cover 121 in a horizontal direction. The second pull rod 123 is fixedly installed on one side wall of the second slider 122 in a horizontal direction, and the second pull rod 123 slides through the second outer cover 121 and extends to the outside of the second outer cover 121. The second elastic element 124 is located on the side of the second slider 122 near the second pull rod 123, and the two ends of the second elastic element 124 abut against the side wall of the second slider 122 and the inner side wall of the second outer cover 121, respectively. In this application, the second elastic element 124 can be a spring.

[0054] The second inclined lifting block 125 is fixedly installed on the side wall of the second slider 122 away from the second pull rod 123, and the end of the second inclined lifting block 125 away from the second slider 122 is inclined downward. The second lifting rod 126 slides through the second outer cover 121 and the lower moving mold frame 11, and the top end of the second lifting rod 126 is inserted and fixed to the bottom wall of the moving mold core 3. The portion of the second lifting rod 126 located inside the second outer cover 121 has a second inclined lifting groove. The height of the second inclined lifting groove near the second slider 122 is greater than the height of the end away from the second slider 122, and the second inclined lifting block 125 is slidably installed in the second inclined lifting groove.

[0055] When it is necessary to disassemble and remove the moving mold core 3, face to the left (refer to...). Figure 4(Direction) Pulling the second pull rod 123 causes the second pull rod 123 to move the second tilting lifting block 125 to the left via the second slider 122. The second tilting lifting block 125 moves within the second tilting lifting groove, thereby driving the second lifting rod 126 to descend. This causes the top of the second lifting rod 126 to disengage from the moving mold core 3, thus unlocking the moving mold core 3. At this point, the moving mold core 3 can be pulled out and removed from the injection mold.

[0056] When the second slider 122 moves to the left, it compresses the second elastic element 124 and causes it to contract and deform. When it is necessary to install the moving mold core 3, the moving mold core 3 is inserted between the upper moving mold frame 10 and the lower moving mold frame 11. The second pull rod 123 is released, the second elastic element 124 releases its elastic potential energy and pushes the second slider 122 to the right. The second slider 122 drives the second tilting lifting block 125 to move, thereby driving the second lifting rod 126 to rise. The top end of the second lifting rod 126 is moved and inserted into the bottom of the moving mold core 3, so that the moving mold core 3 can be quickly locked and fixed.

[0057] Reference Figure 1 and 2 Two injection cavities 5 are formed on the side wall of the moving mold core 3 near the fixed mold core 4. The two injection cavities 5 are connected on their adjacent sides. Injection channels 6 are opened in the fixed mold plate 2 and the fixed mold core 4, and the injection channels 6 are connected to the two injection cavities 5. The moving mold plate 1 drives the moving mold core 3 to move through the guide plate 18 and the mounting plate 19, and makes the moving mold core 3 press against the fixed mold core 4. The injection molding machine injects molten plastic material into the two injection cavities 5 through the injection channels 6. After the plastic material solidifies, the moving mold plate 1 drives the moving mold core 3 to move again, and makes the moving mold core 3 separate from the fixed mold core 4, so that the finished product can be taken out from the injection cavity 5.

[0058] Reference Figure 3 , 4 In the upper fixed mold base 7, lower fixed mold base 8, upper movable mold base 10, and lower movable mold base 11, heat dissipation grooves 17 are formed along their own length. One end of the heat dissipation groove 17 is open, and the open end of the heat dissipation groove 17 is located on the side of the fixed mold core 4 away from the fixed mold tie rod 36. The upper fixed mold base 7, lower fixed mold base 8, upper movable mold base 10, and lower movable mold base 11 are all equipped with partitions 40 inside the heat dissipation grooves 17. The partitions 40 divide the heat dissipation grooves 17 into liquid inlet channels 171 and liquid outlet channels 172. The liquid inlet channel 171 is located above the liquid outlet channel 172, and the liquid inlet channel 171 and the liquid outlet channel 172 are connected at the end of the heat dissipation groove 17 away from the opening.

[0059] Insert the liquid supply connector of the liquid supply device into the opening end of the heat dissipation tank 17. The liquid supply device injects coolant into the liquid inlet channel 171. The coolant flows into the liquid outlet channel 172 through the liquid inlet channel 171 and then flows back to the liquid supply device from the liquid outlet channel 172. This can remove the heat from the upper fixed mold frame 7, lower fixed mold frame 8, upper moving mold frame 10 and lower moving mold frame 11, thereby cooling the product in the injection cavity 5 and making it solidify quickly.

[0060] Reference Figure 3 and 5 A first box 27 is fixedly installed on the side wall of the fixed mold core 4 near the moving mold core 1. The first box 27 is located on the side of the fixed mold core 4 away from the fixed mold tie rod 36. A first top post 28 slides through the first box 27 along the sliding direction of the fixed mold core 4, and the end of the first top post 28 abuts against the side wall of the fixed mold core 4. A third elastic element 29 is sleeved on the first top post 28 inside the first box 27. A first retaining ring is formed by protruding outward on the side of the outer wall of the first top post 28 near the fixed mold core 4. One end of the third elastic element 29 abuts against the first retaining ring, and the other end abuts against the inner side wall of the first box 27 away from the fixed mold core 4. In this application, the third elastic element 29 can be a spring.

[0061] Reference Figure 1 and 3 During the sliding installation of the fixed mold core 4 into the injection mold, the end of the fixed mold core 4 abuts against and pushes the first ejector pin 28 to slide within the first housing 27. The first ejector pin 28 moves and compresses the third elastic element 29, causing it to contract and deform. After the fixed mold core 4 is installed and locked in place, the third elastic element 29 releases its elastic potential energy and, through the first retaining ring, drives the first ejector pin 28 to press against the fixed mold core 4, thereby positioning the fixed mold core 4 in the length direction. At the same time, the first guide groove 15 positions the fixed mold core 4 in the width direction, thus making the installation of the fixed mold core 4 within the injection mold more precise.

[0062] Reference Figure 4 and 5 A second housing 30 is fixedly mounted on the side wall of the mounting plate 19. The second housing 30 is located on the side of the moving mold core 3 away from the moving mold tie rod 37. A second top post 31 slides through the second housing 30 along the sliding direction of the moving mold core 3, and the end of the second top post 31 abuts against the side wall of the moving mold core 3. A fourth elastic element 33 is sleeved on the second top post 31 inside the second housing 30. A second retaining ring is formed by protruding outward on the side of the outer wall of the second top post 31 near the moving mold core 3. One end of the fourth elastic element 33 abuts against the second retaining ring, and the other end abuts against the inner side wall of the second housing 30 away from the moving mold core 3. In this application, the fourth elastic element 33 can be a spring.

[0063] Reference Figure 1 and 4During the sliding installation of the moving mold core 3 into the injection mold, the end of the moving mold core 3 abuts against and pushes the second ejector pin 31 to slide within the second housing 30. The second ejector pin 31 moves and compresses the fourth elastic element 33, causing it to contract and deform. After the moving mold core 3 is installed and locked in place, the fourth elastic element 33 releases its elastic potential energy and, through the second retaining ring, drives the second ejector pin 31 to press against the moving mold core 3, thereby positioning the moving mold core 3 in the length direction. Simultaneously, the second guide groove 16 positions the moving mold core 3 in the width direction, making the installation of the moving mold core 3 within the injection mold more precise, thus resulting in higher product accuracy.

[0064] Reference Figure 6 and 7 Multiple guide rods are fixedly installed between the moving mold plate 1 and the mounting plate 19. Push plates 20 are slidably mounted on the guide rods along the width direction of the moving mold core 3. The upper and lower side walls of the push plate 20 abut against two guide plates 18 respectively. A push block 21 is fixedly installed in the middle of the side wall of the push plate 20 away from the moving mold core 3, and the push block 21 slides through the moving mold plate 1. The push plate 20 consists of two plates fixedly connected by bolts. Multiple push rods 22 are clamped between the two plates. The push rods 22 pass through the plate near the moving mold core 3 and slide through the mounting plate 19. The injection molding machine drives the push block 21 to move, and the push block 21, through the push plate 20, can drive the multiple push rods 22 to move together.

[0065] Reference Figure 6 and 8 Five mounting blocks 25 are bolted and embedded in the side wall of the moving mold core 3 near the moving mold plate 1. Each pair of mounting blocks 25 corresponds to one injection cavity 5, and one mounting block 25 corresponds to the connection between two injection cavities 5. Five receiving slots 24 are opened in the moving mold core 3 corresponding to the five mounting blocks 25. Ejector pins 23 are slidably installed in the mounting blocks 25 and receiving slots 24. The movement of the push rod 22 can push the ejector pins 23 to move, and the ejector pins 23 can be removed from the fixed mold core 4 by disassembling the mounting blocks 25.

[0066] Specifically, the ejector pin 23 includes a first pin body 231, a second pin body 232, and a retaining ring 233. The retaining ring 233 is slidably installed in the receiving groove 24. The first pin body 231 is slidably installed in the mounting block 25 and fixedly connected to the retaining ring 233, with the end of the first pin body 231 away from the retaining ring 233 abutting against the push rod 22. The second pin body 232 is fixedly installed on the side wall of the block away from the first pin body 231, and the second pin body 232 slides through and extends into the injection cavity 5. When the product solidifies and the moving mold core 3 separates from the fixed mold core 4, the injection molding machine drives the push block 21 to move and drives the push rod 22 to move. The push rod 22 abuts against and pushes the first pin body 231. The first pin body 231 drives the second pin body 232 to move through the retaining ring 233. The end of the second pin body 232 inserts into the injection cavity 5, thereby ejecting the product from the injection cavity 5 and realizing automatic demolding of the product.

[0067] The second needle body 232 is fitted with an elastic reset member 26. One end of the elastic reset member 26 abuts against the side wall of the retaining ring 233, and the other end abuts against the bottom wall of the moving mold core 3 located in the receiving groove 24. In this application, the elastic reset member 26 can be a spring. When the ejector pin 23 moves to push the product out of the mold, the retaining ring 233 pushes the elastic reset member 26 and causes it to shrink and deform. After the product is demolded, the injection molding machine drives the ejector rod 22 to reset through the ejector block 21. At this time, the elastic reset member 26 releases its elastic potential energy and pushes the retaining ring 233 to move and reset. The retaining ring 233 drives the second needle body 232 to move, thereby causing the second long body to automatically exit the injection cavity 5.

[0068] Reference Figure 1 A crossbeam 38 is installed in the middle of the top wall of the moving template 1 and the fixed template 2. The crossbeam 38 is detachably fixed to the moving template 1 and the fixed template 2 by bolts. A lifting lug is detachably fixed to the middle of the top wall of the crossbeam 38. When transporting the injection mold, the crossbeam 38 is installed on the fixed template 2 to position the injection mold, so that the internal structure of the injection mold is not easily collided during transportation, and the lifting lug makes it easy to lift the injection mold and transport it to the injection molding machine.

[0069] The implementation principle of Embodiment 1 of this application is as follows: The moving template 1 drives the moving mold core 3 to move through the guide plate 18 and the mounting plate 19, and makes the moving mold core 3 press against the fixed mold core 4. The injection molding machine injects molten plastic material into the two injection cavities 5 through the injection channel 6. After the plastic material solidifies, the moving template 1 drives the moving mold core 3 to move again, and separates the moving mold core 3 from the fixed mold core 4, so that the finished product can be taken out from the injection cavity 5. When it is necessary to remove the fixed mold core 4, the first pull rod 93 is pulled. The first pull rod 93 drives the first lifting rod 96 to descend through the first slider 92 and the first tilting lifting block 95, so that the fixed mold core 4 can be unlocked and pulled to remove the fixed mold core 4 from the injection mold. When it is necessary to install the fixed mold core 4, the first pull rod 93 is released. The first elastic element 94 releases elastic potential energy and pushes the first slider 92 to move, thereby driving the first lifting rod 96 to rise, so that the fixed mold core 4 can be quickly locked and fixed. Similarly, the moving mold core 3 can be quickly disassembled and assembled. When changing the injection mold, there is no need to remove the injection mold from the injection molding machine. Simply use the fixed mold unlocking mechanism and the moving mold structure mechanism to unlock them, and the fixed mold core 4 and the moving mold core 3 can be extracted from the injection mold and replaced, making the replacement of the injection mold more convenient, faster and more stable.

[0070] Example 2:

[0071] Reference Figure 9The difference between this embodiment and embodiment 1 is that the first pull rod 93 is rotatably mounted on the first slider 92 via a bearing, and a baffle 34 is integrally formed on the top wall of the first pull rod 93 along its own length direction. The first outer cover 91 has a through hole 35 at the top of the inner side wall where the first pull rod 93 passes through, and the baffle 34 is slidably mounted in the through hole 35 in accordance with the sliding direction of the first pull rod 93.

[0072] When the first pull rod 93 is pulled to the left, the first lifting rod 96 descends and unlocks the fixed mold core 4. The first pull rod 93 drives the stop bar 34 to move to the left, and at the same time, the first pull rod 93 drives the first slider 92 to press the first elastic element 94. When the stop bar 34 slides out of the through-hole 35 and is located outside the first outer cover 91, the first pull rod 93 is rotated, and the first pull rod 93 drives the stop bar 34 to rotate, so that the end of the stop bar 34 abuts against the outer wall of the first outer cover 91. The stop bar 34 limits the first pull rod 93, so that the first pull rod 93 will not move to the right to reset. After the fixed mold core 4 is replaced, the first pull rod 93 is rotated so that the stop bar 34 rotates to the through-hole 35. The stop bar 34 slides into the through-hole 35, and the first elastic element 94 releases its elastic potential energy and drives the first pull rod 93 to move to the right to reset, so that the first pull rod 93 resets, thereby locking the fixed mold core 4.

[0073] Similarly, when the moving mold core 3 is replaced, the structure of the stop bar 34 and the through hole 35 can be used to prevent the second tie rod 123 from automatically resetting.

[0074] The implementation principle of Embodiment 2 of this application is as follows: When replacing the fixed mold core 4, the operator does not need to keep pulling the first pull rod 93. Rotating the first pull rod 93 can lock the first pull rod 93, and rotating the first pull rod 93 again can unlock the first pull rod 93, thereby facilitating the operator to replace the fixed mold core 4.

[0075] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick-change mold for an injection molding machine, comprising a movable mold plate (1) and a fixed mold plate (2) arranged on the injection molding machine, and a movable mold core (3) and a fixed mold core (4), a material injection cavity (5) being arranged on the side wall of the movable mold core (3), a material injection channel (6) being arranged in the fixed mold plate (2) and the fixed mold core (4) and communicating with the material injection cavity (5), characterized in that: The upper die plate (2) is provided with an upper die frame (7) and a lower die frame (8), the die core (4) is slidably and detachably arranged between the upper die frame (7) and the lower die frame (8), the bottom end of the lower die frame (8) is provided with a die locking mechanism (9) for locking and unlocking the die core (4); the movable die plate (1) is provided with an upper movable die frame (10) and a lower movable die frame (11), the movable die core (3) is slidably and detachably arranged between the upper movable die frame (10) and the lower movable die frame (11), the bottom end of the lower movable die frame (11) is provided with a movable die locking mechanism (12) for locking and unlocking the movable die core (3); The die locking mechanism (9) comprises a first outer cover (91), a first sliding block (92), a first pull rod (93), a first elastic member (94), a first inclined lifting block (95) and a first lifting rod (96), the first outer cover (91) is fixedly arranged at the bottom end of the lower die frame (8), the first sliding block (92) is slidably arranged in the first outer cover (91), the first pull rod (93) slides through the first outer cover (91) and is fixedly connected with the first sliding block (92), the first elastic member (94) is located on the side of the sliding block close to the first pull rod (93), the two ends of the first elastic member (94) abut against the inner wall of the first outer cover (91) and the side wall of the first sliding block (92) respectively, the first inclined lifting block (95) is arranged on the side wall of the first sliding block (92) away from the first pull rod (93), the end of the first inclined lifting block (95) away from the first sliding block (92) is downwardly inclined, the first lifting rod (96) is internally provided with a first inclined lifting groove, and the first inclined lifting block (95) is slidably inserted into the first inclined lifting groove and drives the first lifting rod (96) to move up and down, the top end of the first lifting rod (96) penetrates through the first outer cover (91) and the lower die frame (8) and is fixedly inserted into the bottom end of the die core (4); The movable die locking mechanism (12) comprises a second cover (121), a second sliding block (122), a second pull rod (123), a second elastic member (124), a second inclined lifting block (125) and a second lifting rod (126), the second cover (121) is fixedly arranged at the bottom end of the lower movable die frame (11), the second sliding block (122) is slidingly arranged in the second cover (121), the second pull rod (123) slides through the second cover (121) and is fixedly connected with the second sliding block (122), the second elastic member (124) is located on the side of the second sliding block (122) close to the second pull rod (123), the two ends of the second elastic member (124) abut against the inner wall of the second cover (121) and the side wall of the second sliding block (122) respectively, the second inclined lifting block (125) is arranged on the side wall of the second sliding block (122) away from the second pull rod (123), the end of the second inclined lifting block (125) away from the second sliding block (122) is inclined downward, the second lifting rod (126) is internally provided with a second inclined lifting groove, and the second inclined lifting block (125) is slidingly inserted into the second inclined lifting groove and drives the second lifting rod (126) to move up and down, and the top end of the second lifting rod (126) penetrates through the second cover (121) and the lower movable die frame (11) and is fixedly inserted into the bottom end of the movable die core (3). The first pull rod (93) is rotationally arranged on the first sliding block (92), the outer side wall of the first pull rod (93) is provided with a blocking strip (34) in the direction of its own axis, the first cover (91) is internally provided with a through hole (35), and the blocking strip (34) is slidingly arranged in the through hole (35). When the fixed die locking mechanism (9) unlocks the fixed die core (4), the blocking strip (34) slides out of the through hole (35) and is located outside the first cover (91), the first pull rod (93) rotates and makes the blocking strip (34) abut against the outer side wall of the first cover (91).

2. The quick-change mold for an injection molding machine according to claim 1, characterized by: The upper fixed die frame (7) and the lower fixed die frame (8) are provided with first guide grooves (15) on the mutually close side walls, and the fixed die core (4) is slidingly arranged in the two first guide grooves (15) in a matched mode; the upper movable die frame (10) and the lower movable die frame (11) are provided with second guide grooves (16) on the mutually close side walls, and the movable die core (3) is slidingly arranged in the two second guide grooves (16) in a matched mode.

3. The quick-change mold for an injection molding machine according to claim 1, characterized by: The upper fixed die frame (7), the lower fixed die frame (8), the upper movable die frame (10) and the lower movable die frame (11) are internally provided with heat dissipation grooves (17), the upper fixed die frame (7), the lower fixed die frame (8), the upper movable die frame (10) and the lower movable die frame (11) are provided with partition plates (40) at the middle portions thereof along the length direction of the heat dissipation grooves (17), the partition plates (40) divide the heat dissipation grooves (17) into liquid inlet channels (171) and liquid outlet channels (172), and one end of each of the liquid inlet channels (171) and the liquid outlet channels (172) is provided with an opening and the other end thereof communicates with each other.

4. The quick-change mold for an injection molding machine according to claim 1, characterized by: The upper and lower sides of the side wall of the movable die plate (1) are provided with guide plates (18), the side away from the movable die plate (1) of the two guide plates (18) is provided with a mounting plate (19), and the upper movable die frame (10) and the lower movable die frame (11) are fixedly arranged on the side wall of the mounting plate (19) away from the guide plate (18); a push plate (20) is slidably arranged between the two guide plates (18), a push block (21) is arranged on the side wall of the push plate (20), the push block (21) slides through the movable die plate (1), a plurality of push rods (22) are arranged on the side away from the push block (21) of the push plate (20), a ejector pin (23) is slidably arranged in the side wall of the movable die core (3) away from the fixed die core (4), and the push rod (22) abuts against the ejector pin (23) and pushes the ejector pin (23) into the injection cavity (5).

5. The quick-change mold for an injection molding machine according to claim 4, characterized in that: The side wall of the movable die core (3) close to the push rod (22) is provided with a containing groove (24) for containing the ejector pin (23), and the movable die core (3) is detachably provided with a mounting block (25) at the opening of the containing groove (24). The ejector pin (23) comprises a first needle body (231), a second needle body (232) and a blocking ring (233), the first needle body (231) and the second needle body (232) are coaxially arranged on opposite sides of the blocking ring (233) respectively, the first needle body (231) is slidably arranged in the mounting block (25) and abuts against the push rod (22), the second needle body (232) slides through the movable die core (3) and ejects the product in the injection cavity (5), and the containing groove (24) of the movable die core (3) is provided with an elastic reset member (26), one end of the elastic reset member (26) abuts against the bottom wall of the containing groove (24), and the other end abuts against the blocking ring (233). After the ejector pin (23) ejects the product, the elastic reset member (26) drives the ejector pin (23) to move back to the original position.

6. The quick-change mold for an injection molding machine according to claim 4, characterized by: The fixed die plate (2) is provided with a first box body (27) at one end away from the fixed die core (4) sliding out, the first box body (27) is slidably provided with a first ejector pin (28), the first ejector pin (28) slides out of the first box body (27) and abuts against the fixed die core (4), and the first box body (27) is provided with a third elastic member (29) for driving the first ejector pin (28) to abut against the fixed die core (4); the mounting plate (19) is provided with a second box body (30) at one end away from the movable die core (3) sliding out, the second box body (30) is slidably provided with a second ejector pin (31), the second ejector pin (31) slides out of the second box body (30) and abuts against the movable die core (3), and the second box body (30) is provided with a fourth elastic member (33) for driving the second ejector pin (31) to abut against the movable die core (3).

7. The quick-change mold for an injection molding machine according to claim 1, characterized by: The outer side wall of the fixed die core (4) is fixedly provided with a fixed die pull rod (36), and the outer side wall of the movable die core (3) is fixedly provided with a movable die pull rod (37).

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