Combined mold structure with rapidly switchable cavities

Abstract

The utility model relates to injection molding mold technical field especially relates to combination mould structure of quick switching cavity, including machine body, the surface of machine body is equipped with processing cavity, the top fixed mounting of machine body has the cylinder, the one end of processing cavity is close to the cylinder and is connected with the upper die holder of sliding, the top of upper die holder is fixedly connected with the output end of cylinder, the bottom fixed connection of processing cavity has the lower die holder, the inner wall of lower die holder is equipped with the mounting groove, the rotary disc is rotatably connected in the mounting groove, the top of rotary disc is connected with a plurality of even distribution's lower cavity, the circumferential surface of rotary disc is slidably contacted with a plurality of even distribution's clamping block, through driving motor drive rotary lever and trapezoidal piece rotation, realize rotary disc drive lower cavity and need switching, ensure that different lower cavity can steady butt joint upper cavity, when lower cavity needs to replace more specifications, only need to pull lower cavity and overcome the clamping bead clamping of rubber column to push, do not need traditional wrench to dismantle bolt one by one, improve the work efficiency of injection molding production.

Description

Technical Field

[0001] This utility model relates to the field of injection molding mold technology, and in particular to a modular mold structure with rapidly switchable cavities. Background Technology

[0002] A cavity is a hollow structure in a mold used to contain molten material and cool and solidify it. By accurately replicating the shape of the product, it determines the size, surface texture, and precision of the final product. It works in conjunction with the core to ensure molding accuracy. Cavities are widely used in molding processes such as injection molding and die casting, and are an indispensable key component in industrial manufacturing.

[0003] The existing mold cavities are mostly fixed directly to the mold frame by multiple bolts. Before replacement, the machine must be stopped, and then the fixing bolts around the cavity must be removed one by one with a wrench. After the bolts are removed, they must be stored separately to avoid loss. The whole preparation process requires repeated operation, which makes it impossible to quickly enter the cavity replacement stage and reduces production efficiency. Utility Model Content

[0004] In view of the above-mentioned problems with changing the cavity, this utility model is proposed.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a modular mold structure with rapidly switchable cavities, including a machine body, a processing cavity on the surface of the machine body, a cylinder fixedly installed at the top of the machine body, an upper mold base slidably connected to the end of the processing cavity near the cylinder, the top of the upper mold base being fixedly connected to the output end of the cylinder, and a lower mold base being fixedly connected to the bottom of the processing cavity.

[0006] The inner wall of the lower mold base has an installation groove, and a rotating disk is rotatably connected in the installation groove. The top of the rotating disk is engaged with multiple evenly distributed lower cavities. The circumferential surface of the rotating disk slides in contact with multiple evenly distributed locking blocks. The circumferential surface of the rotating disk has a locking groove, which engages with one of the locking blocks. A rotating groove for a rotating rod is opened at the center of the rotating disk. A trapezoidal block that is rotatably connected to the inner wall of the rotating disk is fixedly connected to the circumferential surface of the rotating rod. When the trapezoidal block rotates to a specific angle, the inclined surface of the trapezoidal block contacts the surface of the locking block and exerts a radial outward squeezing force on the locking block along the installation groove. A fixing block is fixedly connected to the top of the trapezoidal block. A fixing post is fixedly connected to the inner wall of the rotating disk away from the center. A tension spring is sleeved between the fixing post and the fixing block.

[0007] As a preferred embodiment of the modular mold structure with quick-change cavities of this utility model, a drive motor is fixedly installed at the bottom of the mounting groove, the output end of the drive motor is fixedly connected to the bottom end of the rotating rod, a stop post is fixedly connected to the inner wall of the rotating disk near the fixed post, and when the fixed block drives the rotating disk to rotate, the circumferential surface of the stop post contacts the surface of the trapezoidal block; the surface of the locking block is slidably connected to the mounting groove, and a return spring is connected between the end of the locking block away from the rotating disk and the surface of the mounting groove.

[0008] As a preferred embodiment of the modular mold structure with quick-change cavities of this utility model, the bottom end of the upper mold base is fixedly connected to a plurality of upper cavities corresponding one-to-one with the lower cavity, the surface of the upper cavity is provided with a channel penetrating the upper mold base, and the top end of the upper mold base is fixedly connected to an injection tube communicating with the channel.

[0009] As a preferred embodiment of the modular mold structure with quick-change cavities of this utility model, the bottom end of the upper mold base is provided with an annular groove, a buffer pad is fixedly connected in the annular groove, and an upper magnet is slidably connected to the bottom end of the buffer pad. The cross-section of the upper magnet is "T" shaped.

[0010] As a preferred embodiment of the modular mold structure with quick-change cavities of this utility model, the top of the lower mold base is embedded with a lower magnet corresponding to the surface of the upper cavity, the top of the rotating disk is provided with multiple evenly distributed guide grooves, the inner wall of the guide groove is slidably connected with a guide post, and the top of the guide post is fixedly connected to the bottom of the lower cavity.

[0011] As a preferred embodiment of the modular mold structure with quick cavity switching of this utility model, the rotating disk has a plurality of evenly distributed limiting grooves at one end near the outer wall of the lower cavity, and a retaining bead is slidably connected in the limiting groove, with the surface of the retaining bead fitting against the outer wall of the lower cavity. A rubber column is fixedly connected at one end of the limiting groove away from the lower cavity, with the rubber column fitting against the surface of the retaining bead.

[0012] The beneficial effects of this utility model are:

[0013] The drive motor rotates the rotating rod and trapezoidal block. When the trapezoidal block rotates, it first pulls the tension spring to store force. After rotating to a specific angle, it squeezes the locking block to disengage from the locking slot, releasing the tension spring and driving the rotating disk to rotate. The locking slot of the rotating disk is precisely positioned when it engages with the next locking block, enabling the rotating disk to drive the lower cavity to switch as needed. This ensures that different lower cavities can stably connect with the upper cavity. When the lower cavity needs to be changed to more specifications, it is only necessary to pull the lower cavity to overcome the locking ball pushed by the rubber column and slide it along the guide column to disassemble it. During installation, it is aligned with the guide groove and inserted and fixed by locking the ball. There is no need to remove the bolts one by one with a traditional wrench, which shortens the disassembly and replacement time, reduces equipment downtime, improves the working efficiency of injection molding production, and reduces the intensity of manual operation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the overall structure of the rotating disk of this utility model.

[0018] Figure 4 This is a schematic diagram of the overall structure of the lower cavity of this utility model.

[0019] Figure 5 This is a schematic diagram of the card block installation structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the trapezoidal block installation structure of this utility model.

[0021] Figure 7 for Figure 2 Enlarged structural diagram at point A in the middle.

[0022] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Cylinder; 3. Upper mold base; 4. Lower mold base; 5. Lower cavity; 6. Guide post; 7. Injection tube; 8. Upper cavity; 9. Buffer pad; 10. Upper magnet; 11. Rotating rod; 12. Rotating disk; 13. Clamping ball; 14. Lower magnet; 15. Guide groove; 16. Clamping groove; 17. Fixed post; 18. Abutment post; 19. Clamping block; 20. Return spring; 21. Trapezoidal block; 22. Tension spring; 23. Fixed block; 24. Rubber post. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Example 1

[0025] Reference Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6This is the first embodiment of the present invention, providing a modular mold structure with quickly switchable cavities, including a body 1. A processing cavity is formed on the surface of the body 1. A cylinder 2 is fixedly mounted on the top of the body 1. An upper mold base 3 is slidably connected to one end of the processing cavity near the cylinder 2. The top of the upper mold base 3 is fixedly connected to the output end of the cylinder 2. A lower mold base 4 is fixedly connected to the bottom of the processing cavity. An installation groove is formed on the inner wall of the lower mold base 4. A rotating disk 12 is rotatably connected within the installation groove. Multiple evenly distributed lower cavities 5 are engaged at the top of the rotating disk 12. Multiple evenly distributed locking blocks 19 slide in contact with the circumferential surface of the rotating disk 12. The circumferential surface of the rotating disk 12 is provided with a slot 16, which engages with one of the locking blocks 19. The center of the rotating disk 12 is provided with a rotating groove for the rotating rod 11. The circumferential surface of the rotating rod 11 is fixedly connected to a trapezoidal block 21 that is rotatably connected to the inner wall of the rotating disk 12. When the trapezoidal block 21 rotates to a specific angle, the inclined surface of the trapezoidal block 21 contacts the surface of the locking block 19 and exerts a radial outward squeezing force on the locking block 19 along the mounting groove. The top of the trapezoidal block 21 is fixedly connected to a fixing block 23. The end of the inner wall of the rotating disk 12 away from the center is fixedly connected to a fixing post 17. A tension spring 22 is sleeved between the fixing post 17 and the fixing block 23.

[0026] A drive motor is fixedly installed at the bottom of the mounting slot. The output end of the drive motor is fixedly connected to the bottom end of the rotating rod 11. A stop post 18 is fixedly connected to the inner wall of the rotating disk 12 near the fixed post 17. When the fixed block 23 drives the rotating disk 12 to rotate, the circumferential surface of the stop post 18 contacts the surface of the trapezoidal block 21. The surface of the locking block 19 is slidably connected to the mounting slot. A return spring 20 is connected between the end of the locking block 19 away from the rotating disk 12 and the surface of the mounting slot.

[0027] During use, when it is necessary to switch between different specifications of the lower cavity 5 to produce different products during the injection molding process, the drive motor of the mounting groove bottom of the lower mold base 4 is started.

[0028] The output of the drive motor drives the rotating rod 11 to rotate around its own axis. The trapezoidal block 21 fixed on the circumference of the rotating rod 11 rotates together. Since a tension spring 22 is sleeved between the fixed block 23 at the top of the trapezoidal block 21 and the fixed column 17 on the inner wall of the rotating disk 12, the rotating block 21 will pull the tension spring 22 synchronously when it rotates. The tension spring 22 exerts a pulling force on the fixed column 17. However, at this time, the rotating disk 12 is engaged with one of the locking blocks 19 by the slot 16 on the circumference. The return spring 20 pushes the locking block 19 into the slot 16 in its natural state, and it cannot rotate directly.

[0029] As the rotating rod 11 continues to drive the trapezoidal block 21 to rotate, when the trapezoidal block 21 rotates to a specific angle, its inclined surface gradually contacts the surface of the locking block 19 and exerts a radial outward squeezing force on the locking block 19 along the mounting groove. Under the action of the squeezing force, the locking block 19 slides along the inner wall of the mounting groove, while squeezing the return spring 20 to make it contract until the locking block 19 completely disengages from the locking groove 16 of the rotating disk 12, and the locking state of the rotating disk 12 is released.

[0030] At this time, the tension of the tension spring 22 drives the fixed column 17 to move, and the fixed column 17 drives the rotating disk 12 to rotate around the rotating rod 11 in the mounting groove. During the rotation of the rotating disk 12, the abutment 18 on its inner wall will continuously contact the surface of the trapezoidal block 21 to help maintain the rotational stability of the rotating disk 12. When the next slot 16 of the rotating disk 12 rotates to the position of the locking block 19, the reset spring 20 releases the elastic force and pushes the locking block 19 to slide back into the slot 16, realizing the re-locking and positioning of the rotating disk 12. The lower cavity 5 locked at the top of the rotating disk 12 rotates synchronously with the rotating disk 12 until the target lower cavity 5 rotates to the position directly opposite the upper cavity 8 of the upper mold base 3, completing the cavity switching.

[0031] Example 2

[0032] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the bottom end of the upper mold base 3 is fixedly connected to a plurality of upper cavities 8 corresponding one-to-one with the lower cavity 5, the surface of the upper cavity 8 is provided with a channel penetrating the upper mold base 3, and the top end of the upper mold base 3 is fixedly connected to an injection tube 7 communicating with the channel.

[0033] The bottom of the upper mold base 3 is provided with an annular groove, and a buffer pad 9 is fixedly connected inside the annular groove. The bottom of the buffer pad 9 is slidably connected with an upper magnet 10, and the cross-section of the upper magnet 10 is "T" shaped.

[0034] The top of the lower mold base 4 is embedded with a lower magnet 14 corresponding to the surface of the upper cavity 8. The top of the rotating disk 12 is provided with multiple evenly distributed guide grooves 15. The inner wall of the guide groove 15 is slidably connected with a guide post 6. The top of the guide post 6 is fixedly connected to the bottom of the lower cavity 5.

[0035] The rotating disk 12 has multiple evenly distributed limiting grooves at one end near the outer wall of the lower cavity 5. A retaining bead 13 is slidably connected in the limiting groove, and the surface of the retaining bead 13 is in contact with the outer wall of the lower cavity 5. A rubber post 24 is fixedly connected at the end of the limiting groove away from the lower cavity 5, and the rubber post 24 is in contact with the surface of the retaining bead 13.

[0036] During use, the operator holds the top of the lower cavity 5 to be replaced and applies upward pulling force. Since the rotating disk 12 has a retaining ball 13 in the limiting groove near the outer wall of the lower cavity 5, the end of the retaining ball 13 away from the lower cavity 5 is in contact with the rubber post 24 fixed to the inner wall of the limiting groove. In its natural state, the rubber post 24 pushes the retaining ball 13 to fit and engage with the outer wall of the lower cavity 5. At this time, the pulling force needs to overcome the elastic force of the rubber post 24, so that the retaining ball 13 retracts into the limiting groove and squeezes the rubber post 24. Since the contact surface between the retaining ball 13 and the lower cavity 5 is spherical, it can slide smoothly along the outer wall of the lower cavity 5. Under the action of the pulling force, the lower cavity 5 slides upward along the guide post 6 on the inner wall of the guide groove 15 at the top of the rotating disk 12 until the guide post 6 completely disengages from the guide groove 15, the lower cavity 5 separates from the rotating disk 12, and the disassembly is completed.

[0037] Take the new specification lower cavity 5, align the guide post 6 fixed at its bottom with the guide groove 15 corresponding to the top of the rotating disk 12, and slowly push the lower cavity 5 downward. When the bottom of the lower cavity 5 contacts the retaining bead 13, it will exert a downward squeezing force on the retaining bead 13, causing the retaining bead 13 to retract into the limiting groove and squeeze the rubber column 24. As the lower cavity 5 continues to slide downward along the guide groove 15, when the guide post 6 is fully inserted into the guide groove 15 and the lower cavity 5 moves down to a specific distance, the position of the retaining bead 13 on the outer wall of the lower cavity 5 is aligned with the retaining bead 13. The rubber column 24 releases its elastic force, pushing the retaining bead 13 to slide out of the limiting groove until the retaining bead 13 is tightly fitted and engaged with the outer wall of the lower cavity 5. The new cavity is installed and can be put into subsequent injection molding production.

[0038] The remaining structure is the same as that in Example 1.

[0039] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A modular mold structure with rapidly switchable cavities, comprising a body (1), wherein a processing cavity is provided on the surface of the body (1), a cylinder (2) is fixedly installed at the top of the body (1), an upper mold base (3) is slidably connected to one end of the processing cavity near the cylinder (2), the top end of the upper mold base (3) is fixedly connected to the output end of the cylinder (2), and a lower mold base (4) is fixedly connected to the bottom of the processing cavity, characterized in that: The inner wall of the lower mold base (4) is provided with an installation groove, and a rotating disk (12) is rotatably connected in the installation groove. Multiple evenly distributed lower cavities (5) are engaged at the top of the rotating disk (12). Multiple evenly distributed locking blocks (19) slide in contact with the circumferential surface of the rotating disk (12). A locking groove (16) is provided on the circumferential surface of the rotating disk (12), and the locking groove (16) engages with one of the locking blocks (19). A rotating groove for a rotating rod (11) is provided at the center of the rotating disk (12). A trapezoidal block (21) is fixedly connected to the circumferential surface and rotatably connected to the inner wall of the rotating disk (12). When the trapezoidal block (21) rotates to a specific angle, the inclined surface of the trapezoidal block (21) contacts the surface of the locking block (19) and exerts a radial outward squeezing force on the locking block (19) along the mounting groove. A fixing block (23) is fixedly connected to the top of the trapezoidal block (21). A fixing column (17) is fixedly connected to the end of the inner wall of the rotating disk (12) away from the center. A tension spring (22) is sleeved between the fixing column (17) and the fixing block (23).

2. The modular mold structure with rapidly switchable cavities according to claim 1, characterized in that: A drive motor is fixedly installed at the bottom of the mounting slot. The output end of the drive motor is fixedly connected to the bottom end of the rotating rod (11). A stop post (18) is fixedly connected to the inner wall of the rotating disk (12) near the fixed post (17). When the fixed block (23) drives the rotating disk (12) to rotate, the circumferential surface of the stop post (18) contacts the surface of the trapezoidal block (21). The surface of the locking block (19) is slidably connected to the mounting slot. A return spring (20) is connected between the end of the locking block (19) away from the rotating disk (12) and the surface of the mounting slot.

3. The modular mold structure with rapidly switchable cavities according to claim 1, characterized in that: The bottom end of the upper mold base (3) is fixedly connected to a plurality of upper cavities (8) that correspond one-to-one with the lower cavity (5). The surface of the upper cavity (8) is provided with a channel that penetrates the upper mold base (3). The top end of the upper mold base (3) is fixedly connected to an injection tube (7) that communicates with the channel.

4. The modular mold structure with rapidly switchable cavities according to claim 1, characterized in that: The bottom end of the upper mold base (3) is provided with an annular groove, and a buffer pad (9) is fixedly connected in the annular groove. The bottom end of the buffer pad (9) is slidably connected with an upper magnet (10), and the cross-section of the upper magnet (10) is "T" shaped.

5. The modular mold structure with rapidly switchable cavities according to claim 4, characterized in that: The top of the lower mold base (4) is embedded with a lower magnet (14) corresponding to the surface of the upper cavity (8). The top of the rotating disk (12) is provided with a plurality of evenly distributed guide grooves (15). The inner wall of the guide groove (15) is slidably connected with a guide post (6). The top of the guide post (6) is fixedly connected to the bottom of the lower cavity (5).

6. The modular mold structure with rapidly switchable cavities according to claim 1, characterized in that: The rotating disk (12) has multiple evenly distributed limiting grooves at one end near the outer wall of the lower cavity (5). A retaining bead (13) is slidably connected in the limiting groove, and the surface of the retaining bead (13) is in contact with the outer wall of the lower cavity (5). A rubber column (24) is fixedly connected at one end of the limiting groove away from the lower cavity (5), and the rubber column (24) is in contact with the surface of the retaining bead (13).

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