Arc core-pulling structure of mold

Abstract

The utility model discloses an arc core-pulling structure of a die, which belongs to the technical field of dies, and adopts the technical scheme that the arc core-pulling structure comprises an upper die holder, a lower die holder, a core-pulling slide block, a core-pulling main body, a support warping plate and an ejector rod, the upper die holder is provided with an upper cavity, the lower die holder is provided with a lower cavity, and the core-pulling slide block is arranged on the lower die holder in a sliding manner; a first mold core is arranged on the core-pulling sliding block, the core-pulling sliding block slides to drive the first mold core to enter or be separated from the lower mold cavity, the core-pulling main body is detachably arranged on the lower mold base, a second mold core is arranged on the core-pulling main body, a supporting warping plate is rotationally arranged on the lower mold base, the ejector rod penetrates through the lower mold base and is connected with the core-pulling main body, and the supporting warping plate is connected with the ejector rod. When the supporting warped plate rotates and drives the ejector rod to move, the ejector rod drives the core pulling body to be close to or away from the lower die base, so that the first mold core enters or is separated from the lower cavity, the core pulling structure can complete core pulling through sliding of the core pulling sliding block and matching of the supporting warped plate and the ejector rod, the overall structure is simple, production and manufacturing are convenient, and the core pulling process is simple.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and particularly relates to an arc core-pulling structure of a mold. Background Art

[0002] Plastic injection molds are tools for producing plastic products and are widely used. In the injection molding of plastic products, since some plastic products have inner concave, side grooves, side holes, etc., it is necessary to set a mold core and remove the mold core by core pulling after the plastic parts are molded.

[0003] At present, for arc-shaped pipes or arc-shaped cavity-type plastic products, an arc-shaped core is usually used to penetrate into the mold cavity; after the injection molding is completed, the arc-shaped core is driven by an external driving source to move for demolding. However, when the arc-shaped core structure is complex, the arc-shaped core pulling is made of multiple core sections, so multiple core pulling structures are required, and a complex core pulling structure needs to be designed. The overall structure is relatively complex and difficult to manufacture. Utility Model Content

[0004] The purpose of the utility model is to solve the above problems in the prior art and propose a circular arc core pulling structure of a mold. The technical problem to be solved by the utility model is: how to simplify the overall structure.

[0005] The above-mentioned technical purpose of the utility model can be achieved through the following technical solutions: a circular arc core pulling structure of a mold, comprising an upper mold base, a lower mold base, a core pulling slider, a core pulling body, a supporting rocker and a push rod, the upper mold base is provided with an upper cavity, the lower mold base is provided with a lower cavity, the upper cavity and the lower cavity cooperate to form a cavity, the core pulling slider is slidably arranged on the lower mold base, the core pulling slider is provided with a first core, and the sliding of the core pulling slider can drive the first core to enter or leave the lower cavity, the core pulling body is detachably arranged on the lower mold base, the core pulling body is provided with a second core, and the lower mold base is rotatably provided with a supporting rocker, the push rod is penetrated by the lower mold base and connected with the core pulling body, the supporting rocker is connected with the push rod, when the supporting rocker rotates and drives the push rod to move, the push rod drives the core pulling body to approach or move away from the lower mold base, so that the second core enters or leaves the lower cavity, and the first core and the second core are spliced ​​and adapted to the cavity.

[0006] In the above-mentioned arc core-pulling structure of a mold, a rotating shaft is provided on one side of the lower mold base, a connecting hole rotatably matched with the rotating shaft is opened at one end of the supporting seesaw, and the end of the push rod is rotatably connected to the other end of the supporting seesaw.

[0007] In the arc core pulling structure of the above-mentioned mold, a second rotating shaft is provided at the end of the push rod, and a second connecting hole rotatably matched with the second rotating shaft is provided on the supporting seesaw.

[0008] In the above-mentioned arc core-pulling structure of a mold, a mounting hole for mounting an external driving source is opened on a side of the lower mold base close to the ejector rod, and the mounting hole is aligned with the lower surface of the supporting rocker.

[0009] In the above-mentioned arc core pulling structure of a mold, a slide groove is arranged on the lower mold base, the core pulling slider is slidably arranged in the slide groove, a limiting guide block is arranged on the lower mold base, a positioning step is arranged on the core pulling slider, and the lower surface of the limiting guide block is in contact with the step surface of the positioning step.

[0010] In the above-mentioned arc core-pulling structure of the mold, a limiting member is provided on the lower mold base, and when the core-pulling slider slides, the end of the core-pulling slider can abut against the outer surface of the limiting member.

[0011] In the above-mentioned arc core pulling structure of a mold, an avoidance groove is provided on the lower mold base, the opening of the avoidance groove is upward, and a pipe is provided on the core pulling body, and the pipe is passed through the avoidance groove.

[0012] In the arc core-pulling structure of the above-mentioned mold, a positioning groove is provided at the bottom of the core-pulling body, the positioning groove is matched with the end of the ejector rod, and the end of the ejector rod is inserted into the positioning groove.

[0013] In the above-mentioned arc core pulling structure of a mold, a fixing hole 1 is provided on the core pulling body, a mounting rod is installed in the fixing hole 1, a fixing hole 2 is opened at the end of the push rod, and the mounting rod is passed through the fixing hole 2.

[0014] In summary, the beneficial effects of the present invention compared with the prior art are as follows:

[0015] After the upper mold base is separated from the lower mold base, the core-pulling slider slides and drives the first core to separate from the lower cavity, and then the supporting seesaw rotates and drives the ejector rod to move. The ejector rod drives the core-pulling body away from the lower mold base, so that the second core separates from the lower cavity, and the second core drives the product to move. Finally, the product on the second core is removed. The core pulling can be completed by sliding the core-pulling slider and supporting the seesaw in cooperation with the ejector rod, and the product can be effectively removed. The overall structure is simple, convenient for production and manufacturing, and the core pulling process is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment;

[0017] Figure 2It is a partial structural schematic diagram of an embodiment;

[0018] Figure 3 It is a schematic diagram of a part of the structure of the embodiment from another angle;

[0019] Figure 4 It is a schematic diagram of the structure of the supporting seesaw and the top rod of the embodiment;

[0020] Figure 5 It is a structural schematic diagram of the core-pulling body and the second core of the embodiment;

[0021] Figure 6 It is a structural schematic diagram of the core-pulling slider and the first core of the embodiment;

[0022] Figure 7 It is a structural schematic diagram of the lower mold base of the embodiment;

[0023] Figure 8 It is a schematic structural diagram of the upper mold base in the embodiment.

[0024] : 1. upper die base; 2. lower die base; 3. core-pulling slider; 4. first core; 5. core-pulling body; 6. second core; 7. supporting seesaw; 8. ejector rod; 9. upper cavity; 10. lower cavity; 13. rotating shaft one; 14. connecting hole one; 15. rotating shaft two; 16. connecting hole two; 17. mounting hole; 18. slide groove; 19. limiting guide block; 20. positioning step; 21. limiting member; 22. avoidance groove; 23. pipeline; 24. positioning groove; 25. fixing hole one; 26. fixing hole two; 27. mounting rod. DETAILED DESCRIPTION

[0025] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0026] A circular arc core pulling structure of a mold, such as Figures 1 to 8 As shown, it includes an upper mold base 1, a lower mold base 2, a core pulling slider 3, a core pulling body 5, a supporting rocker 7 and a push rod 8. The upper mold base 1 has an upper cavity 9, and the lower mold base 2 has a lower cavity 10. The upper cavity 9 and the lower cavity 10 cooperate to form a cavity.

[0027] The core pulling slider 3 is slidably arranged on the lower mold base 2, and a first core 4 is arranged on the core pulling slider 3. The sliding of the core pulling slider 3 can drive the first core 4 to enter or leave the lower cavity 10. It should be noted that in the present embodiment, the core pulling slider 3 can be driven to slide by a corresponding driving source, and the driving source can be an oil cylinder or an air cylinder, that is, the core pulling slider 3 slides under the driving action of the driving source. When pulling the core, the core pulling slider 3 slides and drives the first core 4 to leave the lower cavity 10, and the core pulling slider 3 is separated from the product. When resetting, the core pulling slider 3 slides and drives the first core 4 to enter the lower cavity 10.

[0028] Specifically, a slide groove 18 is provided on the lower mold base 2, and the core pulling slider 3 is slidably set in the slide groove 18. A limiting guide block 19 is provided on the lower mold base 2, and a positioning step 20 is provided on the core pulling slider 3. The lower surface of the limiting guide block 19 is in contact with the step surface of the positioning step 20. The slide groove 18 and the limiting guide block 19 guide the core pulling slider 3 to ensure the stability of the core pulling slider 3 when sliding, and then ensure the stability of the first core 4 when entering or leaving the lower cavity 10, avoiding damage to the product. In addition, the limiting guide block 19 restricts the core pulling slider 3 to avoid the core pulling slider 3 from leaving the slide groove 18.

[0029] A limiting member 21 is provided on the lower die base 2. When the core pulling slider 3 slides, the end of the core pulling slider 3 can abut against the outer surface of the limiting member 21, so as to limit the stroke position of the core pulling slider 3 by the limiting member 21. Preferably, the limiting member 21 includes a limiting screw, which is threadedly connected to the lower die base 2.

[0030] The core-pulling body 5 is detachably arranged on the lower die base 2 , and a second core 6 is arranged on the core-pulling body 5 . The first core 4 and the second core 6 are assembled and adapted to the cavity.

[0031] A supporting seesaw 7 is rotatably arranged on the lower die base 2, a rotating shaft 13 is arranged on one side of the lower die base 2, a connecting hole 14 rotatably matched with the rotating shaft 13 is opened at one end of the supporting seesaw 7, and an end of the push rod 8 is rotatably connected to the other end of the supporting seesaw 7, that is, the supporting seesaw 7 can rotate around the rotating shaft 13.

[0032] The supporting seesaw 7 is connected to the push rod 8, a second rotating shaft 15 is provided at the end of the push rod 8, and a second connecting hole 16 rotatably matched with the second rotating shaft 15 is provided on the supporting seesaw 7, that is, the push rod 8 can be driven to move when the supporting seesaw 7 rotates.

[0033] A fixing hole 25 is provided on the core pulling body 5, and a mounting rod 27 is installed in the fixing hole 25. Preferably, the mounting rod 27 is threadedly connected to the fixing hole 25, and a fixing hole 26 is opened at the end of the push rod 8. The mounting rod 27 is inserted into the fixing hole 26, and the connection between the core pulling body 5 and the push rod 8 is realized through the mounting rod 27.

[0034] The ejector pin 8 is passed through the lower die base 2 and connected to the core pulling body 5. A positioning groove 24 is provided at the bottom of the core pulling body 5. The positioning groove 24 is adapted to the end of the ejector pin 8. The end of the ejector pin 8 is inserted into the positioning groove 24 to ensure the relative stability of the ejector pin 8 and the core pulling body 5. During installation, by inserting the end of the ejector pin 8 into the positioning groove 24, the fixing hole 1 25 on the core pulling body 5 is coaxially arranged with the fixing hole 2 26 at the end of the ejector pin 8, which makes it convenient to connect the mounting rod 27 with the fixing hole 1 25 and pass it through the fixing hole 26, making the installation more convenient and quick.

[0035] A mounting hole 17 for mounting an external driving source is provided on one side of the lower mold base 2 close to the push rod 8, and the mounting hole 17 is aligned with the lower surface of the supporting rocker 7. The supporting rocker 7 is driven to rotate by the external driving source. The external driving source can be an oil cylinder or an air cylinder. The output end of the external driving source is rotatably connected to the supporting rocker 7 through a joint.

[0036] When the supporting seesaw 7 rotates and drives the push rod 8 to move, the push rod 8 drives the core pulling body 5 to approach or move away from the lower mold base 2, so that the second core 6 enters or leaves the lower cavity 10. It should be noted that after the upper mold base 1 is separated from the lower mold base 2, the supporting seesaw 7 is driven to rotate by an external driving source, the supporting seesaw 7 drives the push rod 8 to move, the push rod 8 drives the core pulling body 5 away from the lower mold base 2, the core pulling body 5 drives the second core 6 to leave the lower cavity 10, the second core 6 drives the product to move, and finally the product on the second core 6 can be directly removed; when resetting, the supporting seesaw 7 is driven to rotate by an external driving source, the supporting seesaw 7 drives the push rod 8 to move, the push rod 8 drives the core pulling body 5 to approach the lower mold base 2, and the core pulling body 5 drives the second core 6 to enter the lower cavity 10.

[0037] An avoidance groove 22 is provided on the lower die base 2, and the opening of the avoidance groove 22 faces upward. A pipe 23 is provided on the core pulling body 5, and the pipe 23 is passed through the avoidance groove 22. It should be noted that after the upper die base 1 is separated from the lower die base 2, the core pulling body 5 and the second core 6 move upward away from the lower die base 2 driven by the supporting rocker 7 and the push rod 8. At this time, the pipe 23 also moves upward away from the lower die base 2 driven by the core pulling body 5. The opening of the avoidance groove 22 faces upward, which can effectively avoid the travel of the pipe 23 when it moves. When the pipe 23 is located in the avoidance groove 22, the avoidance groove 22 can limit the pipe 23 to ensure the stability of the pipe 23.

[0038] The specific embodiments described in this article are merely examples of the spirit of the utility model; technicians in the technical field to which the utility model belongs can make various modifications or additions to the described specific embodiments or replace them in a similar manner, but will not deviate from the spirit of the utility model or exceed the scope defined by the attached claims.

Claims

1. A circular arc core pulling structure of a mold, characterized in that: The invention comprises an upper die base (1), a lower die base (2), a core-pulling slider (3), a core-pulling body (5), a supporting rocker plate (7) and a push rod (8); the upper die base (1) has an upper cavity (9); the lower die base (2) has a lower cavity (10); the upper cavity (9) cooperates with the lower cavity (10) to form a cavity; the core-pulling slider (3) is slidably arranged on the lower die base (2); a first core (4) is arranged on the core-pulling slider (3); the sliding of the core-pulling slider (3) can drive the first core (4) to enter or leave the lower cavity (10); the core-pulling body (5) is detachably arranged on the lower die base (2), a second core (6) is arranged on the core-pulling body (5), a supporting seesaw (7) is rotatably arranged on the lower die base (2), the push rod (8) is passed through the lower die base (2) and is connected to the core-pulling body (5), the supporting seesaw (7) is connected to the push rod (8), when the supporting seesaw (7) rotates and drives the push rod (8) to move, the push rod (8) drives the core-pulling body (5) to approach or move away from the lower die base (2), so that the second core (6) enters or leaves the lower cavity (10), and the first core (4) and the second core (6) are spliced ​​and adapted to the cavity.

2. The arc core pulling structure of a mold according to claim 1, characterized in that: A rotating shaft (13) is provided on one side of the lower die base (2); a connecting hole (14) rotatably matched with the rotating shaft (13) is provided at one end of the supporting seesaw (7); and an end of the push rod (8) is rotatably connected to the other end of the supporting seesaw (7).

3. The arc core pulling structure of a mold according to claim 2, characterized in that: A second rotating shaft (15) is provided at the end of the push rod (8), and a second connecting hole (16) rotatably matched with the second rotating shaft (15) is provided on the supporting seesaw (7).

4. The arc core pulling structure of a mold according to claim 1, characterized in that: A mounting hole (17) for mounting an external driving source is provided on one side of the lower die base (2) close to the push rod (8), and the mounting hole (17) is aligned with the lower surface of the supporting rocker plate (7).

5. The arc core pulling structure of a mold according to claim 1, characterized in that: The lower die base (2) is provided with a slide groove (18), the core-pulling slider (3) is slidably arranged in the slide groove (18), the lower die base (2) is provided with a limit guide block (19), the core-pulling slider (3) is provided with a positioning step (20), and the lower surface of the limit guide block (19) is in contact with the step surface of the positioning step (20).

6. The arc core pulling structure of a mold according to claim 1, characterized in that: A limiting member (21) is provided on the lower die seat (2), and when the core-pulling slider (3) slides, the end of the core-pulling slider (3) can abut against the outer surface of the limiting member (21).

7. The arc core pulling structure of a mold according to claim 1, characterized in that: The lower die base (2) is provided with an escape groove (22), the opening of the escape groove (22) is upward, and the core pulling body (5) is provided with a pipe (23), and the pipe (23) is passed through the escape groove (22).

8. The arc core pulling structure of a mold according to claim 1, characterized in that: A positioning groove (24) is provided at the bottom of the core-pulling body (5), and the positioning groove (24) is matched with the end of the push rod (8), and the end of the push rod (8) is inserted into the positioning groove (24).

9. The arc core pulling structure of a mold according to claim 8, characterized in that: The core-pulling body (5) is provided with a fixing hole 1 (25), a mounting rod (27) is installed in the fixing hole 1 (25), and a fixing hole 2 (26) is opened at the end of the push rod (8), and the mounting rod (27) is inserted into the fixing hole 2 (26).

Images