A new structure of press forming die

Abstract

The utility model relates to a press forming die technical field especially, it relates to a new structure's press forming die, including machine body, the inner wall of machine body is set up with processing cavity, the inner wall sliding connection of processing cavity has the lower plate of liftable removal, the top of lower plate is connected with the lower die, the top sliding connection of lower die has the upper die with processing cavity sliding connection, the inner wall sliding connection of upper die has the upper mould core, the top fixed connection of upper mould core has a plurality of even distribution's push rod, the outer wall of upper die is connected with the upper plate with processing cavity sliding connection, the adhesive material is closely attached to the upper die because of the adhesive force and the tensile force of dovetail groove special structure, after forming is completed, even force promotes the upper mould core, and the product is pushed out stably, avoids the scratch, deformation and so on damage because of uneven stress of local appearance, improves the product pass rate, and the automatic stripping process shortens the production cycle, reduces manual intervention, improves overall production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of compression molding die technology, and in particular to a compression molding die with a novel structure. Background Technology

[0002] Compression molding dies are specialized tools used to shape powdery, granular, or fibrous raw materials into products of specific shapes and sizes by applying pressure within the mold cavity. They are key equipment in the compression molding process, directly affecting the quality, precision, and production efficiency of the products.

[0003] Clean the mold surface to remove residual material, oil, and other impurities. Install the mold onto the press, ensuring the upper and lower molds are aligned. Adjust the press parameters. Prepare an appropriate amount of raw material according to the product requirements. Add the material evenly into the mold cavity, ensuring uniform material distribution. Start the press, causing the upper mold to descend and close with the lower mold, forming a closed molding space. Apply pressure to compress the material within the cavity, filling the entire cavity. After reaching the set pressure, maintain it for a period of time to allow the material to fully fill the cavity and remove air bubbles. For thermosetting materials, a chemical reaction will occur during the pressure holding process, gradually solidifying. After pressure holding and solidification are complete, release the pressure from the press, causing the upper mold to rise and separate from the lower mold. Use the ejector device to eject the product from the mold.

[0004] However, the lower mold is used to mold complex products with a complex cavity structure. After vulcanization, the product fits tightly with the lower mold cavity. When opening the mold to remove the part, the product is difficult to detach smoothly from the complex lower mold cavity. Operators need to use tools such as pry bars and blades to remove the product by gradually separating it. This is not only cumbersome and time-consuming, but also easy to damage the product, resulting in problems such as flash tearing, surface scratches or structural breakage, which affects the production efficiency of the production line and makes it inconvenient for workers to remove the product. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] It solves the problems of difficult mold removal and low efficiency of existing equipment, avoids damage to products caused by tools such as pry bars, and improves production efficiency.

[0007] (II) Technical Solution

[0008] In view of the above-mentioned problem of difficult mold taking, this utility model is proposed.

[0009] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a novel compression molding die, including a machine body, a processing cavity on the inner wall of the machine body, a lower plate that can be lifted and moved slidably connected to the inner wall of the processing cavity, a lower die being snapped onto the top of the lower plate, an upper die being slidably connected to the top of the lower die and slidably connected to the processing cavity, an upper mold core being slidably connected to the inner wall of the upper die, a plurality of evenly distributed push rods being fixedly connected to the top of the upper mold core, an upper plate being snapped onto the outer wall of the upper die and slidably connected to the processing cavity, and a dovetail groove being formed on the inner wall of the upper mold core.

[0010] As a preferred embodiment of the novel compression molding die of this utility model, the outer walls of both the upper and lower plates are fixedly connected to two mirror-distributed mounting blocks, the top of each mounting block is fixedly connected to a stop strip, the bottom of the upper plate is fixedly connected to two evenly distributed positioning rods, and the top of the upper plate is provided with a positioning groove to facilitate the sliding connection of the positioning rods.

[0011] As a preferred embodiment of the novel compression molding die of this utility model, the lower die has a lower die core fixedly connected to its inner wall, the upper plate has a telescopic cylinder fixedly installed on its inner wall, the output end of the telescopic cylinder is fixedly connected to a movable plate fixedly connected to the top end of the push rod, and the inner wall of the movable plate has a plurality of evenly distributed guide columns fixedly connected to the inner wall of the upper plate.

[0012] As a preferred embodiment of the novel compression molding die of this utility model, the inner walls of the lower die and the upper die are fixedly connected with magnetic blocks, the inner walls of the upper plate and the lower plate are fixedly connected with magnetic sheets that fit against the outer wall of the magnetic blocks, and the inner wall of the lower plate is slidably connected with a limiting block that is slidably connected to the inner wall of the lower die.

[0013] As a preferred embodiment of the novel compression molding die of this utility model, the outer walls of the limiting block are fixedly connected to both sides of a rectangular plate, and the inner wall of the lower plate is provided with an installation groove to facilitate the sliding connection of the limiting block. A spring is connected between the inner wall of the installation groove and the outer wall of the rectangular plate.

[0014] As a preferred embodiment of the novel compression molding die of this utility model, the outer wall of the limiting block is slidably connected to a cylinder that is slidably connected to the outer wall of the lower plate, the bottom end of the cylinder is fixedly connected to a rubber column that is slidably connected to the inner wall of the lower plate, the top end of the cylinder is slidably connected to an extrusion column, and the outer wall of the extrusion column is provided with a protrusion plate.

[0015] The beneficial effects of this utility model are:

[0016] 1. Due to its own adhesion and the tensile force generated by the special structure of the dovetail groove, the rubber material adheres tightly to the upper mold. After molding, multiple push rods work together to apply force evenly to push the upper mold core and smoothly push the product out. Compared with the traditional demolding method, this avoids damage such as scratches and deformation caused by uneven local force, thus improving the product qualification rate. At the same time, the automated demolding process shortens the production cycle, reduces manual intervention, and improves the overall production efficiency.

[0017] 2. When mold maintenance or replacement is required, the operator only needs to press the extrusion column, which pushes the rubber column downward, causing the spring to release its force and the limit block to detach from the lower mold. No complicated tools or cumbersome procedures are required. After the limit block is unlocked, the old mold can be quickly disassembled, and the new mold can be initially positioned by magnetic adsorption. Then, it can be installed by locking with the limit block. This reduces the difficulty of maintenance, shortens the equipment downtime, improves the maintainability of the equipment, and makes it convenient for operators to quickly complete mold maintenance and replacement work. Attached Figure Description

[0018] 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:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0020] Figure 2 This is a schematic diagram of the installation structure of the baffle strip of this utility model.

[0021] Figure 3 This is a schematic diagram of the upper mold core installation structure of this utility model.

[0022] Figure 4 This is a schematic diagram of the installation structure of the limiting block of this utility model.

[0023] Figure 5 This is a schematic diagram of the extrusion column installation structure of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Machine body; 2. Upper plate; 3. Lower plate; 4. Lower mold; 5. Upper mold; 6. Mounting block; 7. Stop bar; 8. Positioning rod; 9. Positioning groove; 10. Lower mold core; 11. Moving plate; 12. Push rod; 13. Upper mold core; 14. Guide pillar; 15. Magnetic block; 16. Magnetic sheet; 17. Limiting block; 18. Spring; 19. Rubber pillar; 20. Cylinder; 21. Extrusion pillar. Detailed Implementation

[0025] 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.

[0026] Example 1

[0027] Reference Figure 1-3 This is the first embodiment of the present invention, which provides a novel compression molding die, including a body 1. The inner wall of the body 1 has a processing cavity. The inner wall of the processing cavity is slidably connected to a lower plate 3 that can be raised and lowered. The top of the lower plate 3 is engaged with a lower mold 4, which is used to cooperate with an upper mold 5. The top of the lower mold 4 is slidably connected to an upper mold 5 that is slidably connected to the processing cavity. The inner wall of the upper mold 5 is slidably connected to an upper mold core 13. The inner wall of the upper mold core 13 has an overflow groove, which facilitates the attachment of the product to the upper mold 5 after molding. The top of the upper mold core 13 is fixedly connected to a plurality of evenly distributed push rods 12. The outer wall of the upper mold 5 is engaged with an upper plate 2 that is slidably connected to the processing cavity. The inner wall of the upper mold core 13 has a dovetail groove. The dovetail groove design allows the product to attach to the upper mold first and separate naturally from the lower mold.

[0028] The outer walls of the upper plate 2 and the lower plate 3 are both fixedly connected to two mirror-distributed mounting blocks 6. The top of the mounting block 6 is fixedly connected to a baffle 7, which is made of silicone to improve the sealing performance. The bottom of the upper plate 2 is fixedly connected to two evenly distributed positioning rods 8. The top of the upper plate 2 is provided with a positioning groove 9 to facilitate the sliding connection of the positioning rods 8.

[0029] The inner wall of the lower mold 4 is fixedly connected to the lower mold core 10, and the inner wall of the upper plate 2 is fixedly installed with a telescopic cylinder. The output end of the telescopic cylinder is fixedly connected to a movable plate 11 that is fixedly connected to the top end of the push rod 12. The inner wall of the movable plate 11 is slidably connected with multiple evenly distributed guide columns 14 that are fixedly connected to the inner wall of the upper plate 2. The guide columns 14 are used to guide the movable plate 11 to move.

[0030] During use, when the compression molding operation is performed, the rubber material fills the mold cavity under pressure, and some of the rubber material overflows into the dovetail overflow groove of the upper mold core 13. Since the rubber material itself has adhesion and the unique shape and structure of the dovetail groove can provide additional tension, the molded product is firmly stuck to the upper mold. After the product is molded, the telescopic cylinder on the inner wall of the upper plate 2 is activated. The output end of the telescopic cylinder pushes the moving plate 11. The moving plate 11 slides smoothly along the guide column 14 and drives the upper mold core 13 to move downward through the push rod 12. The upper mold core 13 pushes out the product stuck to the upper mold with a uniform and stable thrust, thus achieving demolding.

[0031] Example 2

[0032] Reference Figure 1 , Figure 2 , Figure 4and Figure 5 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a magnetic block 15 is fixedly connected to the inner wall of the lower mold 4 and the upper mold 5. The block is made of neodymium iron boron material and has a single-point adsorption force ≥50N. The magnetic block 15 and the magnetic sheet 16 are attached to each other for initial positioning. The inner wall of the upper plate 2 and the lower plate 3 is fixedly connected to a magnetic sheet 16 that is attached to the outer wall of the magnetic block 15. The inner wall of the lower plate 3 is slidably connected to a limiting block 17 that is slidably connected to the inner wall of the lower mold 4. The limiting block 17 is used to lock the upper mold 5 and the lower mold 4.

[0033] Rectangular plates are fixedly connected to both sides of the outer wall of the limiting block 17. The inner wall of the lower plate 3 is provided with an installation groove to facilitate the sliding connection of the limiting block 17. A spring 18 is connected between the inner wall of the installation groove and the outer wall of the rectangular plate. The spring 18 is used to push the limiting block 17.

[0034] The outer wall of the limiting block 17 is slidably connected to a cylinder 20 that is slidably connected to the outer wall of the lower plate 3. The outer wall of the cylinder 20 is provided with a groove to facilitate the sliding of the limiting block 17. The bottom end of the cylinder 20 is fixedly connected to a rubber column 19 that is slidably connected to the inner wall of the lower plate 3. The rubber column 19 is used to push the extrusion column 21. The top end of the cylinder 20 is slidably connected to the extrusion column 21. The outer wall of the extrusion column 21 is provided with a protrusion plate. The inner wall of the mounting groove is provided with a moving groove to facilitate the sliding of the protrusion plate. The cross-section of the moving groove is "L" shaped.

[0035] During use, the operator presses the extrusion column 21, which moves downward to extrude the rubber column 19. This causes the rubber column 19 to move the cylinder 20 downward as well. At this time, the spring 18 releases its elastic force to push the limit block 17 to slide along the mounting groove on the inner wall of the lower plate 3, thus disengaging the limit block 17 from the locking state with the lower mold 4. Then, by rotating the extrusion column 21, the convex plate on its outer wall moves along the moving groove and interacts with the structure on the inner wall of the moving groove, preventing the extrusion column 21 from resetting under the action of the rubber column 19 and keeping the limit block 17 in the unlocked state.

[0036] Place the new lower mold 4 on the lower plate 3, so that the magnetic block 15 on the inner wall of the lower mold 4 is in close contact with the magnetic sheet 16 on the inner wall of the lower plate 3. Use the magnetic force to initially fix the position of the mold. Rotate the extrusion column 21 in the opposite direction to release the restriction on the limiting block 17. The rubber column 19 is reset and pushes the cylinder 20 to move upward. The cylinder 20 presses the limiting block 17, so that the limiting block 17 is re-locked into the inner wall of the lower mold 4, completing the stable installation of the lower mold 4. The operation is now complete.

[0037] The remaining structure is the same as that in Example 1.

[0038] 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 novel compression molding die, characterized in that: The machine includes a body (1), the inner wall of which is provided with a processing cavity. The inner wall of the processing cavity is slidably connected to a lower plate (3) that can be raised and lowered. The top of the lower plate (3) is engaged with a lower mold (4). The top of the lower mold (4) is slidably connected to an upper mold (5) that is slidably connected to the processing cavity. The inner wall of the upper mold (5) is slidably connected to an upper mold core (13). The top of the upper mold core (13) is fixedly connected to a plurality of evenly distributed push rods (12). The outer wall of the upper mold (5) is engaged with an upper plate (2) that is slidably connected to the processing cavity. The inner wall of the upper mold core (13) is provided with a dovetail groove.

2. The novel compression molding die according to claim 1, characterized in that: The outer walls of the upper plate (2) and the lower plate (3) are fixedly connected to two mounting blocks (6) that are distributed in a mirror image. The top of the mounting block (6) is fixedly connected to a baffle (7). The bottom of the upper plate (2) is fixedly connected to two evenly distributed positioning rods (8). The top of the upper plate (2) is provided with a positioning groove (9) to facilitate the sliding connection of the positioning rods (8).

3. The novel compression molding die according to claim 1, characterized in that: The lower mold (4) is fixedly connected to the inner wall of the lower mold core (10), and the upper plate (2) is fixedly installed with a telescopic cylinder. The output end of the telescopic cylinder is fixedly connected to a movable plate (11) which is fixedly connected to the top end of the push rod (12). The inner wall of the movable plate (11) is slidably connected with a plurality of evenly distributed guide columns (14) which are fixedly connected to the inner wall of the upper plate (2).

4. The novel compression molding die according to claim 1, characterized in that: The inner walls of the lower mold (4) and the upper mold (5) are fixedly connected with magnetic blocks (15), the inner walls of the upper plate (2) and the lower plate (3) are fixedly connected with magnetic sheets (16) that fit against the outer wall of the magnetic blocks (15), and the inner wall of the lower plate (3) is slidably connected with a limiting block (17) that is slidably connected to the inner wall of the lower mold (4).

5. The novel compression molding die according to claim 4, characterized in that: The outer walls of the limiting block (17) are fixedly connected to rectangular plates on both sides. The inner wall of the lower plate (3) is provided with an installation groove that facilitates the sliding connection of the limiting block (17). A spring (18) is connected between the inner wall of the installation groove and the outer wall of the rectangular plate.

6. The novel compression molding die according to claim 5, characterized in that: The outer wall of the limiting block (17) is slidably connected to a cylinder (20) which is slidably connected to the outer wall of the lower plate (3). The bottom end of the cylinder (20) is fixedly connected to a rubber column (19) which is slidably connected to the inner wall of the lower plate (3). The top end of the cylinder (20) is slidably connected to an extrusion column (21). The outer wall of the extrusion column (21) is provided with a protrusion plate.

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