A kind of anti-retraction side core-pulling structure and mould

Abstract

The utility model relates to die structure technical field discloses a kind of anti-retraction side core-pulling structure and mould, including mutually matched movable die and fixed die, and the lower core-pulling of movable die is fixedly connected, movable die is transversely slidably connected with outer slide, outer slide is transversely slidably connected with inner slide on it, and the upper core-pulling of inner slide is vertically slidably connected with the lower core-pulling cooperation, and the inner core-pulling of outer slide is fixedly connected with the coaxial cooperation of outer side core-pulling;Movable die is connected with the first drive mechanism for driving outer slide and inner slide to slide or reset in turn, and the second drive mechanism for driving upper core-pulling stripping and mould closing is connected between inner slide and upper core-pulling, and fixed die is connected with the anti-retraction mechanism for preventing outer slide and inner slide transverse loosening in the mould closing state of outer side core-pulling and inner core-pulling.The utility model patent solves the problem that side core-pulling structure is easily misaligned under larger injection pressure and affects injection molding quality when interface is formed on the cover plate body in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of mold structure technology, specifically to an anti-retraction side core-pulling structure and mold. Background Technology

[0002] As attached Figure 1 The product shown is a control cover structure for a certain car model. Since the control cover needs to be connected to other components to provide a covering and protection function, the end face needs to be waterproof during actual installation. Therefore, the flatness requirements of the end face of the control cover are very high during injection molding. The overall size and shape of the control cover are relatively large. In order to ensure the quality of injection molding, the injection pressure during the injection process is relatively large to ensure that the rubber material fully fills the cavity.

[0003] In addition to the main body structure, the control cover plate also has an interface on one side. This interface has an undercut structure. Therefore, when designing the mold, besides setting up a cooperating moving mold and a fixed mold, a side core-pulling structure is also required. Based on the interface shape characteristics, the side core-pulling structure includes at least an upper core-pulling element, a lower core-pulling element, and an inner core-pulling element. The upper and lower core-pulling elements close together to form a ring-shaped outer core-pulling element, while the inner core-pulling element is coaxially positioned within the outer core-pulling element. Although the upper, lower, and inner core-pulling structures can complete the injection molding of the interface, a stable driving mechanism is needed to effectively and stably drive the outer and inner core-pulling elements to close and demold during the actual molding process. More importantly, due to the very high injection pressure on the cover plate body, the upper and lower core-pulling elements may shift under strong pressure during injection molding, affecting the molding quality of the interface. Therefore, it is necessary to set up a reasonable side core-pulling structure to stably complete the injection molding of the cover plate body and the interface. Utility Model Content

[0004] The present invention aims to provide an anti-retraction side core-pulling structure and mold to solve the problem in the prior art that the side core-pulling structure is prone to misalignment under large injection pressure when interfaced on the molded cover plate body, thus affecting the injection molding quality.

[0005] To solve the above problems, the present invention adopts the following technical solution: a side-pulling core-pulling structure with anti-retraction capability, comprising a moving mold and a fixed mold that cooperate with each other. A lower core-pulling core is fixedly connected to the moving mold, an outer slide block is laterally slidably connected to the moving mold, an inner slide block is laterally slidably connected to the outer slide block, an upper core-pulling core that cooperates with the lower core-pulling core to form an outer core-pulling core is vertically slidably connected to the inner slide block, and an inner core-pulling core that is coaxially cooperates with the outer core-pulling core is fixedly connected to the outer slide block; a first driving mechanism is connected to the moving mold for driving the outer slide block and the inner slide block to slide or reset sequentially, a second driving mechanism is connected between the inner slide block and the upper core-pulling core for driving the upper core-pulling core to demold and close the mold, and an anti-retraction mechanism is connected to the fixed mold for preventing the outer slide block and the inner slide block from loosening laterally when the outer core-pulling core and the inner core-pulling core are closed.

[0006] The principles and beneficial effects of this application are as follows: In this application, under the driving action of the first driving mechanism, the outer slide and the inner slide slide are driven to slide to the mold closing position respectively. Under the action of the second driving mechanism, the upper core puller connected vertically on the inner slide slides downward to the mold closing state to maintain docking with the lower core puller. At this time, the upper core puller, the lower core puller and the inner core puller are in the mold closing state, and the upper core puller and the lower core puller dock with each other to form an outer core puller with a ring structure. The inner core puller is coaxially set in the outer core puller. At this time, the anti-retraction mechanism connected to the fixed mold acts laterally for the outer slide and the inner slide, preventing the outer slide and the inner slide from loosening laterally when the outer core puller and the inner core puller are in the mold closing state. Thus, the side core puller structure is effectively kept stable during the high-pressure injection process of the cover plate body and the interface. In particular, the positions of the upper core puller and the inner core puller are stable (the lower core puller is fixedly connected to the moving mold and is less affected by the high pressure of injection). This effectively ensures the injection molding stability of the cover plate body and the interface and improves the injection molding quality of the product.

[0007] Preferably, as an improvement, a mold closing insertion part is provided between the upper core puller and the lower core puller.

[0008] With the anti-retraction mechanism already installed on the fixed mold to prevent lateral loosening of the outer and inner slide blocks, this solution includes a mold closing connector between the upper and lower core pullers. When the upper core puller engages with the lower core puller under the drive of the second drive mechanism to close the mold, the mold closing connector between the upper and lower core pullers interlocks. Since the lower core puller is fixedly connected to the moving mold, its position is stable, and the mold closing connector can provide auxiliary anti-retraction protection for the upper core puller laterally, making the upper core puller more stable during high-pressure injection molding and resulting in better injection molding quality of the cover plate body and the interface.

[0009] Preferably, as an improvement, the first driving mechanism includes a driver and a driving rod laterally connected to the driver. The outer wall of the driving rod is provided with an outer clamping step and an inner clamping step. The outer slide is provided with an outer clamping surface that clamps against the outer clamping step, and the inner slide is provided with an inner clamping surface that clamps against the inner clamping step. The outer slide is provided with a through hole for the inner clamping step to pass through laterally, and the outer slide is provided with an outer demolding surface that is directly opposite to the inner clamping surface. A pulling boss is fixedly connected to the driving rod, and the inner slide is provided with an inner demolding surface that cooperates with the pulling boss.

[0010] In this design, when the upper core puller, lower core puller, and inner core puller are demolded from the mold-closed state, the fixed mold and the moving mold first move away from each other, causing the anti-retraction mechanism to lose its anti-retraction clamping effect on the inner and outer slides. Then, the pull boss contacts the inner demolding surface on the inner slide. A first demolding gap is provided between the inner clamping surface on the inner slide and the outer demolding surface on the outer slide. When the driver pulls the drive rod to make the pull boss press against the inner demolding surface, the inner slide slides relative to the outer slide under the pulling force of the pull boss. When the inner slide slides, it is driven by the second drive... The mechanism drives the upper core puller to demold. Under the engagement of the mold closing joint, the upper core puller can only slide vertically in the initial stage of demolding, causing the engagement of the mold closing joint to disappear. Then, as the pulling boss continues to pull the inner slide, the inner slide and the upper core puller slide synchronously until the inner abutting surface on the inner slide abuts against the outer demolding surface of the outer slide. At this point, the drive rod pulls the outer slide, inner slide, and upper core puller synchronously through the pulling boss, causing the inner core puller, which is fixedly connected to the outer slide, to slide, thus completing the demolding of the upper core puller and the inner core puller in sequence.

[0011] During the mold closing stage, the inner clamping step on the drive rod first contacts and abuts against the inner clamping surface of the inner slide, causing the inner slide and the upper core pull to slide laterally and reset. Under the driving action of the second drive mechanism, the upper core pull and the lower core pull are engaged and the mold is closed. Then, the outer clamping step of the drive rod contacts and abuts against the outer clamping surface of the outer slide, causing the outer slide to be pushed by the drive rod to reset the inner core pull. Finally, the moving mold approaches the fixed mold and the mold is closed, thus easily completing the entire mold closing action.

[0012] In this solution, by setting an outer clamping step and an inner clamping step on the drive rod and fixing the pulling boss, combined with the second drive mechanism, the upper and lower core pullers can be demolded and closed in a predetermined sequence, and the sliding sequence and sliding stroke of the inner and outer slide blocks can be precisely controlled, thereby effectively controlling the precise demolding and unmolding of the entire side core puller.

[0013] Preferably, as an improvement, the anti-recoil mechanism includes an outer anti-recoil block and an inner anti-recoil block. The outer anti-recoil block is provided with an outer anti-recoil surface that abuts against the outer abutting surface, and the inner anti-recoil block is provided with an inner anti-recoil surface that abuts against the inner abutting surface.

[0014] In this solution, the anti-retraction mechanism includes an outer anti-retraction block and an inner anti-retraction block. The outer anti-retraction block has an outer anti-retraction surface that fits tightly against the outer clamping surface, and the inner anti-retraction block has an inner anti-retraction surface that fits tightly against the inner clamping surface. After both the upper and inner core pulls have completed the mold closing action, the outer slide block keeps the inner core pull in a fixed position under the clamping action of the outer anti-retraction block, and the inner slide block keeps its lateral position fixed under the clamping action of the inner anti-retraction block. Combined with the insertion and engagement of the mold closing joint between the upper and lower core pulls, the upper core pull remains in a fixed position during the injection of the plastic material, thereby stably achieving the anti-retraction function and ensuring stable and high-quality injection molding of the interface.

[0015] Preferably, as an improvement, the outer anti-recoil block is provided with an outer guide slope that mates with the outer anti-recoil surface, the inner anti-recoil block is provided with an inner guide slope that mates with the inner anti-recoil surface, and the inner slide is provided with an inner chamfer that mates with the inner guide slope.

[0016] In this design, an outer guide slope that mates with the outer anti-recoil surface is provided on the outer anti-recoil block. When the outer anti-recoil block approaches the outer slide block, the outer guide slope can provide auxiliary guidance to the outer slide block, allowing the outer mating surface of the outer slide block to contact and abut against the outer anti-recoil surface more smoothly, thus enabling the outer anti-recoil block to prevent the outer slide block from retracting. Similarly, an inner guide slope that mates with the inner anti-recoil surface is provided on the inner anti-recoil block. Under the guidance of the inner guide slope, the inner slide block can form a mating fit with the inner anti-recoil block more smoothly. More importantly, this design includes an inner chamfer on the inner slide block that mates with the inner guide slope. When the inner slide is reset by the inner clamping step on the drive rod, the drive rod only needs to push the inner slide to the position where the inner chamfer can cooperate with the inner guide slope to stop driving the inner slide to slide (at this time, the outer clamping step on the drive rod has already driven the outer slide to slide and reset). Then, when the moving mold and the fixed mold are closed, the inner anti-retraction block can be used to push the inner slide and the upper core pull to reset and close the mold by relying on the slope cooperation between the inner chamfer and the inner guide slope. This effectively reduces the distance that the drive push rod pushes the inner slide to slide and reset, and also makes it convenient for the drive rod to push the outer slide to reset smoothly, making the whole structure more compact.

[0017] Preferably, as an improvement, the outer slide block is provided with a transverse slide groove, and the inner slide block is fixedly connected to a slider located between the pull boss and the driver. The slider slides in cooperation with the transverse slide groove. The through hole is opened on the slider. The side of the slider facing the driver is the inner abutting surface, and the side of the slider facing the pull boss is the inner demolding surface. When the outer core pull and the inner core pull are molded together, the inner abutting surface and the outer demolding surface are in a state of mutual distance.

[0018] In this design, a transverse groove is provided on the outer slide block, and a slider is fixed on the inner slide block. The slider slides in conjunction with the transverse groove, and the through hole, inner clamping surface, and inner demolding surface are all located on the slider. This allows the drive rod and the pulling boss to more easily and accurately engage with the through hole, inner clamping surface, and inner demolding surface. Furthermore, when the outer and inner core pullers are in the mold-closed state, the inner clamping surface and the outer demolding surface are far apart, while the pulling boss and the inner demolding surface are in contact. This allows the driver to first pull the inner slide block through the drive rod and the pulling boss when demolding begins, causing the inner slide block to drive the upper core puller to slide vertically for demolding, and then drive the outer slide block to demold the inner core puller, effectively ensuring the demolding sequence.

[0019] Preferably, as an improvement, a mounting base is fixedly connected to the fixed mold, the driver is fixedly connected to the mounting base, and a limiting post that cooperates with the outer slide is fixedly connected to the mounting base; a limiting plate that cooperates with the upper core puller is fixedly connected to the outer slide.

[0020] This design incorporates a mounting base for easier driver installation. A limiting post is fixedly connected to the mounting base to control the stroke of the drive rod pulling the outer slide and the inner core-pulling for demolding. It also controls the endpoint of the outer slide's sliding motion driving the inner core-pulling for mold closing, ensuring precise control of the outer slide's lateral movement and improving its accuracy. Furthermore, a limiting plate is fixedly connected to the outer slide. When the drive rod drives the outer slide to contact the positioning surface, causing the inner core-pulling to close, as the moving mold approaches the fixed mold, the inner guide slope on the inner anti-retraction block contacts and abuts against the inner chamfer on the inner slide. Under the abutting force of the inner anti-retraction block, the inner slide slides to the reset position. During this process, the limiting plate's blocking effect on the upper core-pulling, combined with the second drive mechanism between the inner slide and the upper core-pulling, causes the upper core-pulling to slide vertically, allowing the mold-closing insertion parts between the upper and lower core-pulling to interlock, ensuring precise alignment and mold-closing of the upper and lower core-pulling.

[0021] Preferably, as an improvement, a driving protrusion is fixedly connected to the inner slide, and the second driving mechanism includes an inclined T-shaped buckle and an inclined T-shaped groove that are slidably engaged between the driving protrusion and the upper core puller.

[0022] In this scheme, the inclined T-shaped buckle and inclined T-shaped groove with inclined sliding fit are used as the second driving mechanism. When the inner slide block slides relative to the upper core puller, the upper core puller can be driven to slide vertically relative to the lower core puller by the relative fit of the inclined T-shaped buckle and inclined T-shaped groove. The structure is simple and the drive is stable.

[0023] Preferably, as an improvement, the mold-fitting connector includes a mating protrusion and a slot that interlock.

[0024] In this design, the mold-closing insertion part consists of interlocking protrusions and slots. When the protrusions are inserted into the slots, they not only prevent the upper and lower core pullers from sliding laterally, but also prevent them from sliding laterally when the inner slide drives the upper core puller to demold. Since the protrusions are in the slot-inserted state, the upper core puller cannot slide laterally but can only slide vertically when the inner slide moves laterally. Only after the protrusions exit the slots can the upper core puller slide synchronously with the inner slide. Stable and accurate demolding of the upper core puller is achieved by the cooperation of the protrusions and slots.

[0025] A mold comprising the aforementioned anti-retraction side-pulling structure. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of a control cover in the prior art.

[0027] Figure 2 A schematic diagram of an anti-retraction side-pulling structure in Embodiment 1 of this utility model.

[0028] Figure 3 for Figure 2 A schematic diagram showing the hidden moving mold and control cover plate.

[0029] Figure 4 for Figure 3 A schematic diagram showing the hidden outer guide block and inner guide block.

[0030] Figure 5 for Figure 4 A schematic diagram showing the hidden inner slide, the upper core puller, and the inner anti-retraction block.

[0031] Figure 6 This is a schematic diagram of the outer anti-retraction block and the inner anti-retraction block in Embodiment 1 of this utility model.

[0032] Figure 7 This is a schematic diagram of the outer slide in Embodiment 1 of this utility model.

[0033] Figure 8 This is a schematic diagram of the outer slide from another perspective in Embodiment 1 of this utility model.

[0034] Figure 9 This is a schematic diagram of the inner slide in Embodiment 1 of this utility model.

[0035] Figure 10 This is a schematic diagram of the inner slide from another perspective in Embodiment 1 of this utility model.

[0036] Figure 11 This is a schematic diagram of the upper core pulling in Embodiment 1 of this utility model.

[0037] Figure 12 This is a front sectional view of the mold-closing state of an anti-retraction side core-pulling structure according to Embodiment 1 of this utility model.

[0038] Figure 13 This is a front sectional view of the demolding state of an anti-retraction side core-pulling structure according to Embodiment 1 of this utility model.

[0039] Figure 14 This is a schematic diagram of an anti-retraction side-pulling structure in Embodiment 2 of this utility model. Detailed Implementation

[0040] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: moving mold 1, lower core puller 2, slot 201, outer slide block 3, outer stop protrusion 301, transverse slide groove 302, outer abutment surface 303, outer demolding surface 304, inner slide block 4, slider 401, inner stop protrusion 402, inner abutment surface 403, inner demolding surface 404, inner chamfer 405, driving protrusion 406, inclined T-slot 407, upper core puller 5, inclined T-slot 501, insertion protrusion 502, and limiting surface. 503, Inner core puller 6, Outer guide block 7, Inner guide block 8, Driver 9, Drive rod 10, Outer clamping step 1001, Inner clamping step 1002, Pulling boss 1003, Mounting base 11, Outer anti-retraction block 12, Outer anti-retraction surface 1201, Outer guide slope 1202, Inner anti-retraction block 13, Inner anti-retraction surface 1301, Inner guide slope 1302, Limiting plate 14, Limiting post 15, Cover plate body 1000, Interface 10001.

[0041] Appendix Figure 1 The control cover used in the vehicle in the prior art includes a cover body 1000 and an interface 10001 located on the left side of the cover body 1000. The entire cover body 1000 and the interface 10001 are made by one-piece injection molding. Since there is an undercut structure on the interface 10001, a side core-pulling structure needs to be set when designing the mold.

[0042] Example 1 This embodiment is as shown in the appendix. Figure 2 As shown: A side-pulling core-pulling structure with anti-retraction capability includes a movable mold 1 and a fixed mold (not shown) that cooperate with each other. A lower core-pulling element 2 is fixedly connected to the movable mold 1 by screws. An outer slide block 3 is laterally slidably connected to the movable mold 1, and an inner slide block 4 is laterally slidably connected to the outer slide block 3. Figure 4 The inner slide block 4 is vertically slidably connected to the upper core 5, which cooperates with the lower core 2 to form an annular outer core. The right end of the outer slide block 3 is fixedly connected to the horizontally arranged inner core 6 by screws. After the mold is closed, the inner core 6 and the outer core are coaxially engaged.

[0043] Combination Figure 3 and Figure 4 To facilitate smooth sliding of the outer slide block 3 relative to the moving mold 1 and the inner slide block 4 relative to the outer slide block 3, in this embodiment, two outer guide blocks 7 are fixedly connected to the moving mold 1 by screws. The two outer guide blocks 7 are located on both sides of the outer slide block 3. The side walls of the outer slide block 3 are integrally formed with outer stop protrusions 301 that slide in cooperation with the outer guide blocks 7. Under the sliding cooperation between the outer stop protrusions 301 and the outer guide blocks 7, the outer slide block 3 can slide laterally accurately and smoothly relative to the moving mold 1. Figure 3The bottom left side of the inner slide block 4 is fixedly connected to the slider 401 by an integral molding method. The top surface of the outer guide block 7 has a transverse sliding groove 302. The slider 401 is slidably connected to the transverse sliding groove 302. Two inner guide blocks 8 are fixedly connected to the outer slide block 3 by screws. The two inner guide blocks 8 are located on both sides of the inner slide block 4. Both sides of the inner slide block 4 have an integrally molded inner stop protrusion 402. The inner stop protrusion 402 slides in cooperation with the inner guide block 8. Relying on the sliding cooperation between the inner stop protrusion 402 and the inner guide block 8, and the sliding cooperation between the slider 401 and the transverse sliding groove 302, the inner slide block 4 can slide smoothly and accurately relative to the outer slide block 3 laterally.

[0044] Combination Figure 2 and Figure 3 The moving mold 1 is connected to a first driving mechanism for driving the outer slide block 3 and the inner slide block 4 to slide or reset sequentially. The inner slide block 4 and the upper core pull 5 are connected to a second driving mechanism for driving the upper core pull 5 and the lower core pull 2 ​​to engage and cooperate in mold closing or to move away from each other and demold. The fixed mold is connected to an anti-retraction mechanism for preventing the outer slide block 3 and the inner slide block 4 from loosening laterally when the outer core pull 6 and the inner core pull 6 are in the mold closing state.

[0045] Specifically, in combination Figure 2 , Figure 3 and Figure 5 In this embodiment, the first driving mechanism includes a driver 9 and a driving rod 10 horizontally fixedly connected to the driver 9. To facilitate the installation of the driver 9, a vertically arranged mounting base 11 is fixedly connected to the moving mold 1 by screws. In this embodiment, the driver 9 is a driving cylinder fixedly connected to the mounting base 11 by screws. The outer wall of the driving rod 10 is integrally formed from left to right with an outer clamping step 1001, an inner clamping step 1002, and a pulling boss 1003. The diameter of the outer clamping step 1001 is larger than the diameter of the inner clamping step 1002, and the diameter of the inner clamping step 1002 is equal to the diameter of the pulling boss 1003. Meanwhile, combined with... Figure 7 , Figure 8 , Figure 9 and Figure 10The outer slide 3 has an outer abutting surface 303 on its left side that abuts against the outer abutting step 1001. The inner slide 4 has an inner abutting surface 403 on its left side that abuts against the inner abutting step 1002. The inner slide 4 has an inner demolding surface 404 on its right side that abuts against the pulling boss 1003. The outer slide 3 has an outer demolding surface 304 that abuts against the inner abutting surface 403. Correspondingly, an external through groove is provided on the left side wall of the outer slide block 3 for the inner clamping step 1002 and the pulling boss 1003 to pass laterally. A through hole is provided on the slide block for the pulling boss 1003 to pass laterally. In order to enable the inner clamping step 1002 and the pulling boss 1003 to pass laterally smoothly, a clearance plane is provided on both sides of the inner clamping step 1002 and both sides of the pulling boss 1003. When the pulling boss 1003 is rotated 90 degrees, it passes through the through hole on the slide block and then rotates back 90 degrees, so that the left side of the pulling boss 1003 can contact the inner demolding surface 404.

[0046] Combination Figure 3 and Figure 6 The anti-recoil mechanism includes an outer anti-recoil block 12 and an inner anti-recoil block 13. The outer anti-recoil block 12 is provided with an outer anti-recoil surface 1201 that abuts against the outer abutting surface 303, and the inner anti-recoil block 13 is provided with an inner anti-recoil surface 1301 that abuts against the inner abutting surface 403. In order to make the outer anti-recoil block 12 and the inner anti-recoil block 13 cooperate more smoothly, in this embodiment, an outer guide slope 1202 that cooperates with the outer anti-recoil surface 1201 is opened at the bottom right side of the outer anti-recoil block 12, and an inner guide slope 1302 that cooperates with the inner anti-recoil surface 1301 is provided on the inner anti-recoil block 13. The top left side of the inner slide block 4 is provided with an inner chamfer 405 that slides against the inner guide slope 1302.

[0047] Combination Figure 9 , Figure 10 and Figure 11 In this embodiment, a driving protrusion 406 is integrally formed on the right side of the inner slide block 4. The second driving mechanism includes an inclined T-shaped buckle 501 and an inclined T-shaped groove 407 that are slidably engaged between the driving protrusion 406 and the upper core pull 5. The inclined T-shaped groove 407 is formed on the bottom surface of the driving protrusion 406, and the inclined T-shaped buckle 501 is integrally formed on the top surface of the upper core pull 5. At the same time, a mold closing insertion part is provided between the upper core pull 5 and the lower core pull 2. The mold closing insertion part includes a vertically interlocking insertion protrusion 502 and a slot 201, wherein the insertion protrusion 502 is integrally formed on the upper core pull 5. Figure 5The slot 201 is opened on the lower core 2, and there are two insertion protrusions 502, which are located on both sides of the upper core 5. In order to make the upper core 5 more accurate during the reset process, in this embodiment, a limiting plate 14 is fixedly connected to the outer slide 3 by screws. There are two limiting plates 14, which are located on both sides of the upper core 5. The upper core 5 is provided with a limiting surface 503 that cooperates with the limiting plate 14.

[0048] In this embodiment, the side core-pulling mold closing state is as follows: Figure 12 As shown, when the product is demolded after injection molding, the moving mold 1 moves away from the fixed mold. The moving mold 1 drives the outer anti-retraction block 12 and the inner anti-retraction block 13 to move synchronously, so that the outer anti-retraction block 12 loses its anti-retraction effect on the outer slide block 3, and the inner anti-retraction block 13 loses its anti-retraction effect on the inner slide block 4. Then, the driving cylinder pulls the driving rod 10 to slide to the left. First, the protrusion pulls the slider 401, the inner slide block 4 and the driving protrusion 406 to slide to the left synchronously. Since the insertion protrusion 502 is in the insertion state with the slot 201, when the driving protrusion 406 slides to the left, when the inclined T-shaped buckle 501 and the inclined T-shaped groove 407 are engaged, the upper core pull 5 can only slide upward and make the insertion protrusion 502 exit the slot 201. After the insertion protrusion 502 slides upward out of the slot 201, the upper core pull 5 completes demolding and can then follow the inner slide block 4 to slide to the left synchronously. As the drive rod 10 continues to pull the inner slide block 4 to the left, the inner pressing surface 403 on the inner slide block 401 abuts against the outer demolding surface 304 of the outer slide block 3. The outer slide block 3 is pressed and slides to the left in sync with the inner slide block 4. At this time, the outer slide block 3 drives the inner core pull 6 to slide to the left and demold, thus realizing the demolding of the entire side core pull structure.

[0049] After complete demolding, as follows Figure 13As shown, during the mold closing stage, the drive cylinder first pushes the drive rod 10 to gradually extend to the right. The inner clamping step 1002 first abuts against the inner clamping surface 403. At this time, the slider 401, inner slide 4, drive protrusion 406, and upper core pull 5 slide to the right. When the drive rod 10 extends to the right a certain distance (e.g., 20.5mm), the outer clamping step 1001 contacts the outer clamping surface 303, causing the outer slide 3 to be subjected to force and slide to the right synchronously with the slider 401, inner slide 4, drive protrusion 406, and upper core pull 5 until the upper core pull 5 slides to contact the limiting plate 14 and stops sliding. At this time, the upper core pull 5 is located directly above the lower core pull 2, and the inner core pull 6 is reset under the sliding action of the outer slide 3. Finally, the moving mold 1 approaches the fixed mold, and the inner guide of the inner anti-retraction block 13... The inclined surface 1302 abuts against the inner chamfer 405 on the inner slide block 4, causing the inner slide block 4, along with the slider 401 and the driving protrusion 406, to continue sliding to the right. At this point, since the upper core pull 5 has already abutted against the limiting plate 14 and cannot continue to slide to the right, when the upper core pull 5 is subjected to the force of the driving protrusion 406, under the cooperation of the inclined T-shaped buckle 501 and the inclined T-shaped groove 407, the upper core pull 5 moves downward and contacts the lower core pull 2, completing the mold closing of the outer core pull. The insertion protrusion 502 is inserted into the slot 201, the inner demolding surface 404 on the slider 401 contacts the left side wall of the pulling boss 1003, and the outer anti-retraction surface 1201 of the outer anti-retraction block 12 contacts the outer abutting surface 303 on the outer slide block 3. The entire side core pull structure returns to its original position. Figure 12 The mold closing state.

[0050] In this embodiment, since the insertion protrusion 502 and the slot 201 are in the insertion state when the mold is closed, the upper core pull 5 can stably cooperate with the lower core pull 2 ​​to form the outer core pull. The outer anti-retraction block 12 plays a lateral anti-retraction role on the outer slide block 3, and the inner anti-retraction block 13 plays a lateral anti-retraction role on the inner slide block 4. This makes the entire side core pull structure laterally connected and stable after the mold is closed. Even if the pressure is large during product injection molding, the upper core pull 5 and the inner core pull 6 will not shift laterally, effectively ensuring the quality of the injection molding of the product interface 10001.

[0051] A mold comprising the aforementioned anti-reverse side core-pulling structure.

[0052] Example 2 The difference between Example 2 and Example 1 is as follows: Figure 14 As shown, in this embodiment, a limiting post 15 is fixedly connected to the mounting base 11 by screws. The limiting post 15 is arranged horizontally and the right end face of the limiting post 15 faces the outer abutting surface 303 of the outer slide block 3. The limiting post 15 is used to limit the horizontal sliding position of the outer slide block 3, so that the stroke of the entire structure is more precise and controllable.

[0053] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A side-pulling structure for preventing recoil, comprising a moving mold and a fixed mold that cooperate with each other, characterized in that: A lower core puller is fixedly connected to the moving mold, an outer slide block is slidably connected to the moving mold, an inner slide block is slidably connected to the outer slide block, an upper core puller that cooperates with the lower core puller to form an outer core puller is slidably connected to the inner slide block, and an inner core puller that is coaxially cooperates with the outer core puller is fixedly connected to the outer slide block; a first driving mechanism for driving the outer slide block and the inner slide block to slide or reset sequentially is connected to the moving mold, a second driving mechanism for driving the upper core puller to demold and close the mold is connected between the inner slide block and the upper core puller, and an anti-retraction mechanism for preventing the outer slide block and the inner slide block from loosening laterally when the outer core puller and the inner core puller are in the closed state is connected to the fixed mold.

2. The anti-retraction side-pulling structure according to claim 1, characterized in that: A mold closing insertion part is provided between the upper core pulling part and the lower core pulling part.

3. The anti-retraction side-pulling structure according to claim 1, characterized in that: The first driving mechanism includes a driver and a driving rod laterally connected to the driver. The outer wall of the driving rod is provided with an outer clamping step and an inner clamping step. The outer slide is provided with an outer clamping surface that clamps against the outer clamping step, and the inner slide is provided with an inner clamping surface that clamps against the inner clamping step. The outer slide is provided with a through hole for the inner clamping step to pass through laterally, and the outer slide is provided with an outer demolding surface that is directly opposite to the inner clamping surface. A pulling boss is fixedly connected to the driving rod, and the inner slide is provided with an inner demolding surface that cooperates with the pulling boss.

4. The anti-retraction side-pulling structure according to claim 3, characterized in that: The anti-recoil mechanism includes an outer anti-recoil block and an inner anti-recoil block. The outer anti-recoil block has an outer anti-recoil surface that fits tightly against the outer abutting surface, and the inner anti-recoil block has an inner anti-recoil surface that fits tightly against the inner abutting surface.

5. The anti-retraction side-pulling structure according to claim 4, characterized in that: The outer anti-recoil block is provided with an outer guide slope that mates with the outer anti-recoil surface, the inner anti-recoil block is provided with an inner guide slope that mates with the inner anti-recoil surface, and the inner slide is provided with an inner chamfer that mates with the inner guide slope.

6. The anti-retraction side-pulling structure according to claim 4, characterized in that: The outer slide block is provided with a transverse slide groove, and the inner slide block is fixedly connected to a slider located between the pull boss and the driver. The slider slides in cooperation with the transverse slide groove. The through hole is opened on the slider. The side of the slider facing the driver is the inner clamping surface, and the side of the slider facing the pull boss is the inner demolding surface. When the outer core pull and the inner core pull are molded together, the inner clamping surface and the outer demolding surface are in a state of mutual distance.

7. The anti-retraction side-pulling structure according to claim 3, characterized in that: A mounting base is fixedly connected to the fixed mold, and the driver is fixedly connected to the mounting base. A limiting post that cooperates with the outer slide is fixedly connected to the mounting base; a limiting plate that cooperates with the upper core puller is fixedly connected to the outer slide.

8. The anti-retraction side-pulling structure according to claim 1, characterized in that: The inner slide is fixedly connected to a drive protrusion, and the second drive mechanism includes an inclined T-shaped buckle and an inclined T-shaped groove that are slidably engaged between the drive protrusion and the upper core puller.

9. The anti-retraction side-pulling structure according to claim 2, characterized in that: The mold-fitting connector includes interlocking protrusions and slots that interlock with each other.

10. A mold, characterized in that: Includes a retractable side-pulling structure as described in any one of claims 1-9.

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