Die with rack pitched roof

Abstract

The utility model discloses a mould with a rack pitched roof, which comprises an upper mould base and a lower mould base, a first ejector rod and a second ejector rod are arranged between the upper mould base and the lower mould base, a cavity is arranged in the upper mould base, a first mould core and a second mould core are arranged in the cavity, the first mould core is connected with the top end of the first ejector rod, and the second mould core is connected with the top end of the second ejector rod. The first mold core is connected to the top end of the first ejector rod, the second mold core is connected to the top end of the second ejector rod, the first ejector rod is obliquely arranged, the second ejector rod is vertically arranged, the second ejector rod is further connected with a third ejector rod, and the third ejector rod is obliquely arranged. Mutual interference between the ejector rods is prevented, smoothness and high efficiency of the ejection process are ensured, and the demolding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of molds, in particular to a mold with a rack inclined top. Background Art

[0002] A mold is a tool used to manufacture objects. It produces products with specific shapes and sizes by injecting or forming materials. Molds are usually used in large-scale production to ensure the accuracy and consistency of each product. Injection molds inject hot melt plastic material into the mold cavity through the injection molding process, and form plastic products of the desired shape after cooling and solidification. This process is widely used to manufacture plastic parts with various complex shapes and fine details.

[0003] In the existing mold, the mold core needs to be connected to two inclined ejector pins. The inclined ejector pins will interfere with each other after being extended, which limits the free movement of the ejector pins, resulting in limited ejection stroke and failure to completely eject the molded parts, affecting production efficiency. The ejector pins will generate additional friction and collision during operation, which will accelerate the wear of the ejection system and reduce the service life of the mold. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a mold with a rack inclined top, which prevents the top rods from interfering with each other, ensures the smoothness and efficiency of the ejection process, and improves the demoulding efficiency.

[0005] To solve the above technical problems, the utility model provides a mold with a rack inclined top, comprising an upper mold base and a lower mold base, a first push rod and a second push rod are arranged between the upper mold base and the lower mold base, a cavity is arranged in the upper mold base, a first mold core and a second mold core are arranged in the cavity, the first mold core is connected to the top end of the first push rod, the second mold core is connected to the top end of the second push rod, the first push rod is inclined, the second push rod is vertically arranged, the second push rod is also connected to the third push rod, the third push rod is inclined, a first rack portion is arranged on the second push rod, a corresponding second rack portion is arranged on the third push rod, and the second rack portion is meshed with the first rack portion.

[0006] The second push rod is provided with a limiting groove, and the top end of the third push rod is clamped in the limiting groove.

[0007] The included angle between the third push rod and the second push rod is 7°.

[0008] The lower die base comprises a bottom plate and a cover plate arranged on the bottom plate.

[0009] A first fixing seat is provided at the bottom of the first top rod, and the first fixing seat is inserted into the cover plate. A plurality of pins are provided at the bottom of the first fixing seat, and the pins are fixed in the bottom plate.

[0010] A T-shaped slot is provided in the first fixing seat, a limiting block is provided at the bottom end of the first push rod, the limiting block is inserted in the T-shaped slot, a first mounting slot is provided on the limiting block, and the first push rod is inserted into the first mounting slot.

[0011] A second fixing seat is provided at the upper end of the second push rod, a second mounting groove and a third mounting groove are provided on the second fixing seat, the second push rod is inserted into the second mounting groove, the third push rod is inserted into the third mounting groove, and the second mounting groove and the third mounting groove are staggered.

[0012] A gasket is provided between the first push rod and the first mold core.

[0013] When the utility model is used, the upper mold base and the lower mold base are correctly installed on the injection molding machine or other molding equipment, ensuring that all ejector pins, mold cores and related components have been correctly installed and debugged, and then the plastic or other molding material is heated to a molten state, and the molten material is injected into the mold cavity through the injection system. After the plastic material is cooled and solidified in the mold cavity, the mold enters the ejection stage. At this time, the first ejector pin and the second ejector pin start to operate. The first ejector pin drives the first mold core to perform preliminary ejection through its inclined setting. At the same time, the second ejector pin is vertically set, and the upper end of the second ejector pin is connected to the third ejector pin. The second ejector pin drives the third ejector pin to eject the second mold core in the inclined direction. The third ejector pin cooperates with the second ejector pin through the rack structure to ensure the synchronization of the ejection process, eject the molded part from the mold cavity, and the molded part is completely separated.

[0014] The beneficial effects brought by the utility model are:

[0015] The utility model solves the problem of mutual interference of ejector pins in traditional molds, ensures smooth and efficient ejection process, and improves demoulding efficiency.

[0016] The utility model reduces the friction and wear between the ejector pins and prolongs the service life of the mold.

[0017] The utility model has a stable structure, ensures that the ejector rod will not deviate during the working process, and ensures the accuracy of the demoulding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the second push rod of the utility model.

[0020] Figure 3 It is a structural schematic diagram of the third push rod of the utility model.

[0021] Figure 4It is a structural schematic diagram of the first push rod of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the second fixing seat of the utility model.

[0023] Figure 6 It is a structural schematic diagram of the first fixing seat of the utility model.

[0024] In the figure: 1. upper die base; 2. lower die base; 3. first ejector pin; 4. second ejector pin; 5. cavity; 6. first mold core; 7. second mold core; 8. third ejector pin; 9. first rack portion; 10. second rack portion; 11. limiting groove; 12. bottom plate; 13. cover plate; 14. first fixed seat; 15. pin; 16. T-slot; 17. limiting block; 18. first mounting groove; 19. second fixed seat; 20. second mounting groove; 21. third mounting groove; 22. washer. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0026] according to Figures 1 to 3 As shown, it includes an upper mold base 1 and a lower mold base 2, and a first ejector rod 3 and a second ejector rod 4 are arranged between the upper mold base 1 and the lower mold base 2. A cavity 5 for molding plastic products is arranged in the upper mold base 1, and a first mold core 6 and a second mold core 7 are installed in the cavity 5. The first mold core 6 is connected to the top of the first ejector rod 3, and the second mold core 7 is connected to the top of the second ejector rod 4. In order to avoid interference between the ejector rods and optimize the operation of the ejection system, the first ejector rod 3 is tilted and the second ejector rod 4 is vertically arranged so that it can avoid other components during the ejection process. In addition, a third ejector rod 8 is also connected to the second ejector rod 4, and the third ejector rod 8 is also tilted, which effectively avoids mutual interference between the ejector rods and ensures the smooth operation of the ejection process.

[0027] The second push rod 4 is provided with a first rack portion 9, and the third push rod 8 is provided with a second rack portion 10 corresponding thereto, and the second rack portion 10 is meshed with the first rack portion 9, thereby ensuring that the two push rods can move synchronously during the ejection process. In addition, in order to ensure the stability of the third push rod 8 during the movement, a limiting groove 11 is also provided on the second push rod 4, and the top end of the third push rod 8 is clamped in the limiting groove 11. Through this structure, the third push rod 8 can be effectively prevented from being offset or disengaged during operation. The angle between the third push rod 8 and the second push rod 4 is 7°.

[0028] according to Figure 4 and Figure 6 As shown, the lower die base 2 includes a bottom plate 12 and a cover plate 13 arranged on the bottom plate 12, a first fixing seat 14 is arranged at the bottom of the first push rod 3, the first fixing seat 14 is inserted into the cover plate 13, and a plurality of pins 15 are arranged at the bottom of the first fixing seat 14, and these pins 15 are fixed in the bottom plate 12, so as to ensure the stability of the first fixing seat 14 in the cover plate 13. A T-slot 16 is arranged in the first fixing seat 14, a limit block 17 is arranged at the bottom end of the first push rod 3, the limit block 17 is inserted into the T-slot 16, a first installation slot 18 is also arranged on the limit block 17, and the first push rod 3 is inserted into the first installation slot 18.

[0029] according to Figure 5 As shown, the upper end of the second push rod 4 is provided with a second fixing seat 19, and the second fixing seat 19 is provided with a second mounting groove 20 and a third mounting groove 21. The second push rod 4 is inserted into the second mounting groove 20, and the third push rod 8 is inserted into the third mounting groove 21. The second mounting groove 20 and the third mounting groove 21 are staggered, and the staggered notches not only help to ensure the stability of the two push rods during movement, but also effectively reduce the interference between them.

[0030] A washer 22 is provided between the first push rod 3 and the first mold core 6 , and the washer 22 provides additional support and buffering to ensure a stable connection between the first push rod 3 and the first mold core 6 .

[0031] When the utility model is used, the upper mold base 1 and the lower mold base 2 are correctly installed on the injection molding machine or other molding equipment, ensuring that all ejector pins, mold cores and related components have been correctly installed and debugged, and then the plastic or other molding material is heated to a molten state, and the molten material is injected into the mold cavity 5 through the injection system. After the plastic material is cooled and solidified in the mold cavity 5, the mold enters the ejection stage, at which time the first ejector pin 3 and the second ejector pin 4 start to operate. The first ejector pin 3 drives the first mold core 6 to perform preliminary ejection through its inclined setting. At the same time, the second ejector pin 4 is vertically set, and the upper end of the second ejector pin 4 is connected to the third ejector pin 8. The second ejector pin 4 drives the third ejector pin 8 to eject the second mold core 7 in the inclined direction. The third ejector pin 8 and the second ejector pin 4 cooperate through the rack structure to ensure the synchronization of the ejection process, and the molded part is ejected from the mold cavity, and the molded part is completely separated.

[0032] The beneficial effects brought by the utility model are:

[0033] The utility model solves the problem of mutual interference of ejector pins in traditional molds, ensures smooth and efficient ejection process, and improves demoulding efficiency.

[0034] The utility model reduces the friction and wear between the ejector pins and prolongs the service life of the mold.

[0035] The utility model has a stable structure, ensures that the ejector rod will not deviate during the working process, and ensures the accuracy of the demoulding process.

[0036] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A mold with a rack inclined top, comprising an upper mold base and a lower mold base, a first ejector rod and a second ejector rod are arranged between the upper mold base and the lower mold base, and a cavity is arranged in the upper mold base, characterized in that: A first mold core and a second mold core are provided in the mold cavity, the first mold core is connected to the top end of a first push rod, the second mold core is connected to the top end of a second push rod, the first push rod is inclined, the second push rod is vertically arranged, a third push rod is also connected to the second push rod, the third push rod is inclined, a first rack portion is provided on the second push rod, a corresponding second rack portion is provided on the third push rod, and the second rack portion is meshed with the first rack portion.

2. A mold with a rack inclined top according to claim 1, characterized in that: The second push rod is provided with a limiting groove, and the top end of the third push rod is clamped in the limiting groove.

3. A mold with a rack inclined top according to claim 1, characterized in that: The included angle between the third push rod and the second push rod is 7°.

4. A mold with a rack inclined top according to claim 1, characterized in that: The lower die base comprises a bottom plate and a cover plate arranged on the bottom plate.

5. A mold with a rack inclined top according to claim 4, characterized in that: A first fixing seat is provided at the bottom of the first top rod, and the first fixing seat is inserted into the cover plate. A plurality of pins are provided at the bottom of the first fixing seat, and the pins are fixed in the bottom plate.

6. A mold with a rack inclined top according to claim 5, characterized in that: A T-shaped slot is provided in the first fixing seat, a limiting block is provided at the bottom end of the first push rod, the limiting block is inserted in the T-shaped slot, a first mounting slot is provided on the limiting block, and the first push rod is inserted into the first mounting slot.

7. The mold with a rack inclined top according to claim 1, characterized in that: A second fixing seat is provided at the upper end of the second push rod, a second mounting groove and a third mounting groove are provided on the second fixing seat, the second push rod is inserted into the second mounting groove, the third push rod is inserted into the third mounting groove, and the second mounting groove and the third mounting groove are staggered.

8. The mold with a rack inclined top according to claim 1, characterized in that: A gasket is provided between the first push rod and the first mold core.

Images