A type Ⅱ lead core support mold

Abstract

The application discloses a type II lead core support mold and belongs to the mold field, which comprises a first bottom plate, a second bottom plate and a mold core structure. Parallel mold core guide blocks forming sliding grooves are arranged on the first bottom plate, and a plurality of guide grooves are arranged on the mold core guide blocks. The second bottom plate is arranged on the first bottom plate and opposite to the mold core guide blocks. A plurality of lock catches are symmetrically arranged on the second bottom plate and can slide along the outer side of the sliding grooves. The lock catches are provided with groove teeth matched with the guide grooves. The mold core structure comprises front mold cores and rear mold cores and is slidably connected in the sliding grooves. After the mold is closed, the mold closing surface can be locked by the lock catches. The mold closing precision of the mold core structure is improved, the precision of the mold is ensured, the product quality is improved, the mold is closed and opened through the sliding structure, the mold is not needed to be hoisted out, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to a mold, and more specifically, to a type II lead core support mold. Background Technology

[0002] Existing lead core support molds generally require demolding and hoisting. The molds themselves are quite heavy, making direct manual operation cumbersome. Furthermore, they lack a good positioning structure, which easily leads to the production of poor-quality products.

[0003] For example, Chinese Patent Publication No. CN218314686U, published on January 17, 2023, is entitled "A Mold Structure for Vulcanizing Seismic Isolation Rubber Bearings for Buildings". This application discloses a rubber bearing mold structure, including a mold block, a mold cavity, and fastening bolts. The mold cavity is provided in two parts, and the mold block is fixed between the two ends of the mold cavity. This solution adopts a block structure, which thickens the mold cavity structure, improves the mold strength, and increases production efficiency. However, its positioning accuracy is low, and the quality of the molded product will decrease. Moreover, this solution requires direct manual operation, and the degree of automation is low. Summary of the Invention

[0004] This invention overcomes the problem of low assembly precision in lead core support molds, which leads to a decline in product quality. It provides a Type II lead core support mold. This solution limits the mold structure in multiple directions, improves the fitting precision of the mold, and thus improves the quality of the product.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a type II lead core support mold, characterized in that it includes a first base plate, on which parallel mold core guide blocks forming a sliding groove are arranged, and the mold core guide blocks are provided with a plurality of guide grooves;

[0006] The second base plate is located on the first base plate and on the opposite side of the mold core guide block. Sliding latches are symmetrically arranged on the second base plate along the outer side of the slide groove. The latches are provided with groove teeth that cooperate with the guide groove.

[0007] The mold core structure includes a front mold core and a rear mold core, which are slidably connected in a groove. After the mold is closed, both sides of the mold closing surface can be locked by latches.

[0008] In this design, the mold core guide block is used to realize the mold core structure's opening and closing operations, limiting the positional offset of the mold core structure and improving the assembly accuracy of the front and rear mold cores. The slotted teeth on the latch lock with the mold core structure's closing surface through the guide groove on the mold core guide block. The guide groove provides guidance for the latch, ensuring precise contact with the closing surface for locking, and also reduces the assembly accuracy requirements of the latch. This improves the mold core structure's closing accuracy, ensures the mold's precision, and thus improves the quality of the finished product. Furthermore, the sliding structure eliminates the need for hoisting for demolding, improving production efficiency.

[0009] Preferably, the system also includes a pre-forming module. The first base plate has a receiving groove for fixing the pre-forming module, and the receiving groove corresponds to the cavity position when the mold core structure is closed. The pre-forming module is a pre-formed product. The first base plate is provided with a solute tank for fixing the pre-forming module, and the pre-forming module is molded by the molding pressure generated when the mold core structure is closed to generate the final product.

[0010] Preferably, the front mold core and the rear mold core are respectively connected to two first driving devices. The first driving devices are rotatably fixed on the first driving device fixing base, and the latch is connected to the second driving device fixed on the second base plate. The first driving devices are used to drive the movement of the mold core structure. There are two first driving devices, which are respectively connected to the front mold core and the rear mold core of the mold core structure, and drive the front mold core and the rear mold core to perform telescopic movement to realize the mold closing and mold opening operations. The second driving device is used to control the telescopic movement of the latch. When the mold core structure is closed, the front mold core and the rear mold core are locked together by the latch. The first driving device can rotate around the first driving device fixing base. After the mold core structure is closed, the first driving device and the mold core structure need to be separated for molding operation. At this time, after separating the first driving device from the mold core structure, in order to prevent the first driving device from interfering with the hydraulic column and hot plate push-pull mechanism of the vulcanizing machine of the connecting part of the mold core structure, the first driving device needs to be rotated 90 degrees so that the connecting part avoids the mold core structure.

[0011] Preferably, the front mold core and the rear mold core have mating pre-hardened blocks on their mating surfaces. These pre-hardened blocks have staggered parting surfaces forming a Z-shaped mating surface. The pre-hardened blocks improve the sealing of the mating surfaces of the front and rear mold cores, and also reduce deformation and hardness of the product at the parting point. The Z-shaped staggered parting surface of the pre-hardened blocks ensures that the front and rear mold cores can fit together, while preventing mold pressure from squeezing the rubber out of the mating surface and causing product deformation.

[0012] Preferably, the mating area between the front mold core and the rear mold core is provided with a wedge-shaped locking block that engages with the latch. After mold closing, the wedge-shaped locking blocks of the front and rear mold cores engage to form a V-shaped block. The wedge-shaped locking blocks of the front and rear mold cores can engage to form a V-shaped block, which has a guiding function and guides the latch. When the latch is locked to the mold core structure, the V-shaped block has an automatic correction function for the latch or mold core mechanism, reducing the accuracy requirements of the latch. At the same time, the latch structure also needs to be provided with a V-shaped groove that matches the V-shaped block.

[0013] Preferably, the front mold core and the rear mold core are provided with several overflow channels, which are located on the mating surfaces of the front and rear mold cores and on the side connected to the first driving device. When the mold core structure is subjected to molding operation, the pre-forming module is squeezed, and excess product material is squeezed out through the overflow channels, ultimately shaping the product. Because the internal pressure of the mold core structure is relatively uniform, the overflow channels are distributed on the mating surfaces of the front and rear mold cores and at the connection points between the front and rear mold cores and the first driving device, making the overflow channels ring-shaped and evenly distributed. This ensures uniform overflow of glue, prevents uneven product density or deformation, and improves the product's aesthetics.

[0014] Preferably, a wear-resistant block is embedded inside the parallel mold core guide block of the first base plate, and an elastic element is also provided between the wear-resistant block and the first base plate. The wear-resistant block is used to abut against the bottom of the front mold core and the rear mold core of the mold core structure to prevent the front mold core and the rear mold core from directly contacting the first base plate, which would cause wear to the mold core structure or the first base plate and reduce the fitting accuracy. An elastic element is provided between the wear-resistant block and the first base plate. The elastic element can lift the wear-resistant block. As the wear-resistant block wears, the elastic element will continue to lift the wear-resistant block and abut against the mold core structure.

[0015] Preferably, the side of the first base plate where the mold core guide block is arranged is provided with a pressure plate fixed to the second base plate, and the second base plate is provided with positioning holes for adjusting the pressure plate. The pressure plate is set on the second base plate and closely abuts the side of the mold core guide block arranged on the first base plate, which is used to prevent the position of the first base plate on the second base plate from changing, ensuring that the mold core structure can slide normally inside the slide. In addition, the second base plate is provided with several positioning holes corresponding to the position of the pressure plate. The positioning holes can restrict the position of the pressure plate, thereby creating a larger space between the two opposing pressure plates. This allows the size of the first base plate placed between the pressure plates to be changed, thereby changing the relative position of the mold core guide block, so that the mold can be used for products of different sizes and improve the applicability of the mold.

[0016] Preferably, the bottom of the mold core guide block is provided with a guide groove, and a reset member is provided between the mold core guide block and the guide groove. The direction of action of the reset member is opposite to the direction of movement of the mold core guide block. The bottom of the mold core guide block is provided with a guide groove structure corresponding to the position of the first base plate, so that the mold core guide block can slide relative to the first base plate, thereby adjusting the position of the guide groove on the mold core guide block relative to the slotted tooth structure on the latch; and the reset member can reset the displaced mold core guide block.

[0017] Preferably, the guide grooves on the mold core guide block are arranged obliquely and parallel, and are misaligned with the slots of the latch. After the mold core guide block moves, its width dimension increases, changing the fit between the mold core guide block and the mold core structure from a clearance fit to an interference fit. When the slots on the latch engage with the oblique guide grooves, the mold core guide block moves along the guide grooves. When the mold core guide block deviates from its initial position, its width dimension increases, creating an interference fit with the mold core structure, thereby fixing the mold core structure. The latch also fixes the mold core structure in a direction perpendicular to the mold core guide block, improving positioning accuracy.

[0018] Compared with the prior art, the beneficial effects of the present invention are: (1) it improves the positioning accuracy of the mold core structure, thereby improving the quality of the product; (2) it has a semi-automatic effect, reducing the consumption of a lot of manpower and material resources and improving production efficiency; (3) the structure is lighter and the manufacturing cost is lower; (4) it does not require lifting every time the mold is removed, and the accident rate is greatly reduced; (5) it has higher applicability and is suitable for molding various types of products. Attached Figure Description

[0019] Figure 1 This is an isometric view of the present invention.

[0020] Figure 2 for Figure 1 A magnified view of A in the middle.

[0021] Figure 3 for Figure 1 A magnified view of B in the middle.

[0022] Figure 4 This is a half-sectional view of the preformed module of the present invention.

[0023] Figure 5 This is a top view of the assembly of the pre-formed module according to the present invention.

[0024] Figure 6 This is a top view of the present invention without the pre-formed module assembled.

[0025] Figure 7 These are side views and half-sectional views of the present invention.

[0026] Figure 8 This is a schematic diagram of an embodiment of Example 2 of the present invention.

[0027] In the diagram: 1. First base plate, 2. Second base plate, 3. Mold core guide block, 4. Guide groove, 5. Slide groove, 6. Locking buckle, 7. Slot tooth, 8. Mold core structure, 9. Front mold core, 10. Rear mold core, 11. Mold parting surface, 12. Pre-forming module, 13. Receiving groove, 14. Cavity, 15. First driving device, 16. First driving device fixing base, 17. Second driving device, 18. Parting pre-hardening block, 19. Offset parting surface, 20. Wedge-shaped locking block, 21. V-shaped block, 22. 23. Glue overflow channel, 24. Wear-resistant block, 25. Elastic element, 26. Pressure plate, 27. Positioning hole, 28. Guide groove, 29. Reset element, 30. Step, 31. Pre-formed base, 32. Middle lead core mold core, 33. Upper connecting plate, 34. Lower connecting plate, 35. Reinforcing steel plate, 36. Film, 37. Upper connecting plate receiving groove, 38. Arc groove, 39. Stress groove, 40. Telescopic rod, 41. Pin, 42. Locking groove, 43. V-shaped groove, 44. Glue overflow groove, 45. Convex block. Detailed Implementation

[0028] The technical solution of the present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.

[0029] Example 1: As Figures 1 to 7The illustrated type II lead core support mold includes a first base plate 1, a second base plate 2, and a mold core structure 8. The first base plate 1 is fixed above the second base plate 2. Parallel mold core guide blocks 3 are provided on both sides of the upper surface of the first base plate 1. The two mold core guide blocks 3 together form a slide groove 5. The size of the slide groove 5 is adapted to the size of the mold core structure 8, allowing the mold core structure 8 to slide inside the slide groove 5. The mold core structure 8 includes a front mold core 9 and a rear mold core 10. The front mold core 9 and the rear mold core 10 slide into the slide groove 5 from both ends respectively. After reaching the middle of the slide groove 5, the front mold core 9 and the rear mold core 10 can fit together for mold closing operation. On the outside of the slide groove 5, corresponding to the mold closing surface 11 of the mold core structure 8, a latch 6 is provided. On both sides of the mold closing surface 11 of the mold core structure 8, there are also wedge-shaped locking blocks 20 corresponding to the latch 6. When the wedge-shaped locking blocks 20 of the front mold core 9 and the rear mold core 10 are closed, they can form a V-shaped block 21. The latch 6 locks the two wedge-shaped locking blocks 20 together. V-block 21 locks in place, thus completing the mold-locking operation. Corresponding to V-block 21, latch 6 is provided with V-groove 42 to hold V-block 21 in place. The cooperation between V-groove 42 and V-block 21 can greatly reduce the precision requirements of the fit between latch 6 and mold core structure 8. It is worth noting that when the mold is not locked, mold core guide block 3 is located between latch 6 and mold core structure 8. Therefore, when latch 6 and mold core structure 8 are fitted together for mold locking, latch 6 needs to pass over mold core guide block 3. Several guide grooves 4 are provided on the upper surface of mold core guide block 3, and steps 29 are provided on the lower surface of latch 6. Steps 29 can abut against the upper surface and side of mold core guide block 3. Grooves 7 that are adapted to guide grooves 4 are provided on steps 29 of latch 6. Guide grooves 4 can provide guidance for latch 6 by cooperating with grooves 7, improving the fit precision between latch 6 and V-block 21, thereby improving mold-locking precision, ensuring normal mold pressure, and improving product quality. The mold core guide blocks 3 number four and are distributed along two parallel straight lines, with two blocks on each line. Figure 3 As shown, the four mold core guide blocks 3 are distributed at the four corners of the first base plate 1.

[0030] Among them, the wedge-shaped locking block 20 side of the front mold core 9 and the rear mold core 10 is also provided with a locking groove 41 for accommodating the locking buckle 6, so as to ensure that the locking buckle 6 can be locked and fixed after it is engaged with the V-shaped block 21, and prevent it from loosening.

[0031] The locking buckle 6 and the mold core structure 8 are driven by driving devices. The front mold core 9 and the rear mold core 10 are connected to two first driving devices 15. The first driving devices 15 drive the front mold core 9 and the rear mold core 10 to slide telescopically within the slide groove 5. The locking buckle 6 is fixedly connected by a second driving device 17. The second driving device 17 drives the locking buckle 6 to telescopically move in a direction perpendicular to the length of the mold core guide block 3. The first driving device 15 and the second driving device 17 can be structures such as telescopic hydraulic cylinders or telescopic air cylinders. The second driving device 17 is fixed on the second base plate 2, and the first driving device 15 is rotatably fixed on the first driving device fixing base 16. When the mold core structure 8... During mold closing, the telescopic rods 39 of the two first drive devices 15 are fixedly connected to the back of the front mold core 9 and the rear mold core 10 respectively through pins 40, thereby controlling the mold closing of the front mold core 9 and the rear mold core 10. Then, the locking buckle 6 is driven by the second drive device 17 to lock the front mold core 9 and the rear mold core 10 together. After the mold core structure 8 completes the mold closing, the first drive device 15 and the mold core structure 8 need to be separated for molding operation. After the first drive device 15 retracts the telescopic rod 39 and separates it from the mold core structure 8, in order to prevent the first drive device 15 from interfering with the mold core structure 8, the first drive device 15 needs to be rotated 90 degrees so that the telescopic rod 39 avoids the mold core structure 8.

[0032] On the first base plate 1, corresponding to the cavity 14 position when the mold core structure 8 is closed, there is a receiving groove 13 for the preforming module 12. The preforming module 12 includes a preforming base 30, an intermediate lead core mold core 31, an upper connecting plate 32, a lower connecting plate 33, a reinforcing steel plate 34, and a film 35. The preforming base 30 is provided with a fixing hole for the intermediate lead core mold core 31 for vertically fixing the intermediate lead core mold core 31. Then, the intermediate lead core mold core 31 is stacked in sequence with the lower connecting plate 33, the film 35, and the reinforcing steel plate 34, and the upper connecting plate 32, thereby forming the preforming module 12. The preforming module 12 is finally made into a product by molding and vulcanization through the mold core structure 8. The upper surfaces of the front mold core 9 and the rear mold core 10 are provided with upper connecting plate placement grooves 36. Arc grooves 37 are provided at the midpoints of the four sides of the upper connecting plate placement grooves 36, and stress grooves 38 are provided at the four corners. The arc grooves 37 and stress grooves 38 can ensure the fit allowance of the front mold core 9 and the rear mold core 10 with the upper connecting plate 32, reduce contact pressure and concentrated stress, and ensure a firm fit.

[0033] The front mold core 9 and the rear mold core 10 have mating pre-hardened blocks 18 on their mating surfaces 11. These pre-hardened blocks 18 have offset parting surfaces 19 forming a Z-shaped mating surface. The pre-hardened blocks 18 improve the sealing of the mating surfaces 11 of the front mold core 9 and the rear mold core 10, and also reduce deformation and hardness at the parting point. The Z-shaped offset parting surfaces 19 of the pre-hardened blocks 18 ensure that the front mold core 9 and the rear mold core 10 can fit together, while preventing the molding pressure from squeezing the rubber out of the mating surfaces 11 and causing product deformation. Simultaneously, the upper surfaces of the front mold core 9 and the rear mold core 10 have overflow grooves 43 along the outer edge of the cavity 14 to temporarily collect the overflowing glue from the pre-forming module 12 during molding, improving the product's aesthetics.

[0034] The front mold core 9 and the rear mold core 10 are provided with overflow channels 22 on the cavity 14 side. The overflow channels 22 are distributed at two points on the mold closing surface 11 of the front mold core 9 and the rear mold core 10, as well as at two points connected to the two first drive devices 15. The overflow channels 22 are evenly distributed. The overflow channels 22 can reduce the pressure inside the mold and the pressure of the locking buckle 6, thus ensuring the appearance of the product.

[0035] The first base plate 1 is also provided with wear-resistant blocks 23, which are embedded in the first base plate 1. An elastic element 24, which is a compression spring, connects the wear-resistant blocks 23 and the first base plate 1. The wear-resistant blocks 23 are used to abut against the bottom of the front mold core 9 and the rear mold core 10 of the mold core structure 8 to prevent the front mold core 9 and the rear mold core 10 from directly contacting the first base plate 1, which would cause wear to the mold core structure 8 or the first base plate 1 and reduce the fitting accuracy. The elastic element 24 can lift the wear-resistant blocks 23. As the wear-resistant blocks 23 wear, the elastic element 24 will continue to lift the wear-resistant blocks 23 to abut against the mold core structure 8. There are four wear-resistant blocks 23, which are arranged in parallel near the mold core guide blocks 3. Two blocks are arranged next to each mold core guide block 3 to ensure that the front mold core 9 and the rear mold core 10 can move normally and will not jam due to unevenness. On the second base plate 2, near the first base plate 1, on both sides of the mold core guide block 3, there are also pressure plates 25. There are four pressure plates 25, which are used to limit the position of the four corners of the first base plate 1 to prevent the first base plate 1 from shifting position.

[0036] The second base plate 2 has several rows of positioning holes 26 near the pressure plate 25. Bolts and other fasteners can be installed in these holes 26 to restrict the position of the pressure plate 25 relative to the first base plate 1. By changing the position of the bolts in different rows, the space occupied by the pressure plate 25 and the first base plate 1 can be altered, allowing for the replacement of different sizes of the first base plate 1. This enables the use of different mold types and product functions, broadening its applicability. Similarly, the first drive device mounting base 16 also has several positioning holes for changing the position of the first drive device 15, and the second base plate 2 also has positioning holes for changing the position of the second drive device 17. This allows for adjustment of the molding pressure and clamping force, improving the mold's applicability and meeting more production needs.

[0037] Example 2: As Figure 8 The type II lead core support mold shown differs from Embodiment 1 only in that the bottom of the mold core guide block 3 is provided with a guide groove 27 structure, allowing the mold core guide block 3 to slide within the guide groove 27. A reset member 28, which is a tension spring structure, is provided between the mold core guide block 3 and the guide groove 27. Simultaneously, the upper surface of the mold core guide block 3 is provided with several inclined parallel guide grooves 4, which are staggered with the slot teeth 7 of the locking buckle 6. A convex block 44 is also provided along the movement path of the mold core guide block 3. When the mold core guide block 3 moves towards the convex block 44, the convex block 44 causes the width dimension of the mold core guide block 3 to expand, thereby allowing the mold core guide block 3 to press against the mold core structure 8, causing the mold core structure 8 to be locked by the mold core guide block 3, changing the fit from clearance fit to interference fit.

[0038] When the latch 6 moves toward the mold core guide block 3, the groove 7 on the step 29 of the latch 6 engages with the guide groove 4 of the mold core guide block 3. Since the movement direction of the groove 7 is perpendicular to the length direction of the mold core guide block 3, and the guide groove 4 is inclined and not parallel to the movement direction of the groove 7, when the groove 7 continues to move toward the mold core guide block 3, it will push the two mold core guide blocks 3 to move along the guide groove 27. Figure 8 The two mold core guide blocks 3 move closer to each other (the convex block 44 is arranged between the two mold core guide blocks 3). Under the action of the convex block 44, the mold core guide block 3 deforms in the width direction, so that the mold core guide block 3 abuts against the mold core structure 8. When the slot tooth 7 of the latch 6 exits the guide groove 4, the mold core guide block 3 is reset under the action of the reset member 28. The width dimension of the mold core guide block 3 is restored, and a gap is generated between the mold core guide block 3 and the mold core structure 8, returning to the initial state.

[0039] By changing the fit type between the mold core structure 8 and the mold core guide block 3, the sliding and locking of the mold core structure 8 are facilitated, thereby improving the production efficiency and assembly accuracy of the mold and enhancing product quality.

Claims

1. A type II lead core support mold, characterized in that, include: A first base plate is provided with parallel mold core guide blocks forming a sliding groove. The mold core guide blocks are provided with a plurality of guide grooves. The bottom of the mold core guide blocks is provided with a guide groove. The mold core guide blocks are slidably connected in the guide grooves. A reset member is provided between the mold core guide blocks and the guide grooves. The second base plate is located on the first base plate and on the opposite side of the mold core guide block. Sliding latches are symmetrically arranged along the outer side of the slide groove on the second base plate. The latches are provided with groove teeth that cooperate with the guide groove. Several guide grooves on the mold core guide block are arranged in parallel at an incline. The mold core structure includes a front mold core and a rear mold core, which are slidably connected in a groove. After the mold is closed, both sides of the mold closing surface can be locked by latches. A convex block is provided in the middle of the two mold core guide blocks along the movement path of the mold core guide block; when the latch moves toward the mold core guide block, the slotted teeth engage with the guide groove opening, pushing the two mold core guide blocks closer to each other along the guide groove, and the convex block causes the width dimension of the mold core guide block to expand, and the mold core structure is stuck by the mold core guide block, changing from clearance fit to interference fit; when the slotted teeth exit the guide groove, under the action of the reset component, a gap is generated between the mold core guide block and the mold core structure, restoring the initial state.

2. The type II lead core support mold according to claim 1, characterized in that, It also includes a pre-forming module, and the first base plate is provided with a receiving groove for fixing the pre-forming module, the receiving groove corresponding to the cavity position when the mold core structure is closed.

3. The type II lead core support mold according to claim 1, characterized in that, The front mold core and the rear mold core are respectively connected to two first drive devices. The first drive devices are rotatably fixed on the first drive device fixing base. The latch is connected to the second drive device fixed on the second base plate.

4. The type II lead core support mold according to claim 3, characterized in that, The front mold core and the rear mold core are provided with matching parting pre-hardened blocks on their mating surfaces, and the parting pre-hardened blocks are provided with misaligned parting surfaces to form Z-shaped mating surfaces.

5. A type II lead core support mold according to any one of claims 1 to 4, characterized in that, The front mold core and the rear mold core are provided with a wedge-shaped locking block that engages with the latch. After the mold is closed, the wedge-shaped locking blocks of the front mold core and the rear mold core engage to form a V-shaped block.

6. A type II lead core support mold according to claim 4, characterized in that, The front mold core and the rear mold core are provided with several overflow channels, which are located on the mold mating surface of the front mold core and the rear mold core and on the side connected to the first driving device.

7. A type II lead core support mold according to any one of claims 1 to 4, characterized in that, The first base plate has a wear-resistant block embedded inside the parallel mold core guide block, and an elastic element is also provided between the wear-resistant block and the first base plate.

8. A type II lead core support mold according to any one of claims 1 to 4, characterized in that, The first base plate has a pressure plate fixed on the side of the mold core guide block, and the second base plate has positioning holes for adjusting the pressure plate.

9. A type II lead core support mold according to claim 1, characterized in that, The movement direction of the slotted teeth is perpendicular to the length direction of the mold core guide block. The guide groove is arranged at an angle and is not parallel to the movement direction of the slotted teeth.

Images