Multi-angle core pulling device

Abstract

The utility model discloses a multi-angle core-pulling device. The multi-angle core-pulling device comprises a fixed mold and a movable mold arranged above the fixed mold, accommodating grooves for accommodating products and grooves for accommodating the sliding block assemblies are formed in the fixed mold and the movable mold; the sliding block assembly is located at one end of the fixed mold and comprises a first core-pulling mechanism and a second core-pulling mechanism, and the second core-pulling mechanism is movably arranged on the first core-pulling mechanism; the first core-pulling mechanism moves along the side wall direction of the movable mold; and the moving direction and the moving angle of the second core-pulling mechanism are not consistent with those of the first core-pulling mechanism. The core-pulling mechanism has the beneficial effects that the sliding component is arranged at the parting surface of the movable mold and the movable mold, and the first core-pulling mechanism and the second core-pulling mechanism are respectively started in the mold opening process, so that two core-pulling actions in two different directions and at different angles can be realized in one demolding process, full-automatic production is facilitated, time and labor are saved, and the production efficiency is improved. And labor is saved, the structure is simple, and production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of equipment manufacturing, in particular to a multi-angle core pulling device. Background Art

[0002] The core pulling mechanism is one of the common mechanisms in injection molds, and is generally designed at the undercut position of the product. At present, a common way to realize the core pulling action is to start the sliding mechanism through the inclined guide column; that is, when the mold is opened, the inclined guide column drives the slider to move, so that the core body is separated from the product to facilitate product demolding. However, this inclined guide column drives the slider to move in one direction. When the product has multiple core bodies set in different directions and angles to be pulled, it is necessary to set up multiple movable molds, and realize the core pulling of core bodies in different directions and angles through multiple demolding operations, which greatly reduces the efficiency of demolding and core pulling, and cannot meet the use of large-scale high-demand molds. Another way is to increase the mold volume, set the core bodies of different directions and angles on the same parting surface, and realize the core pulling of core bodies in different directions and angles through one demolding; but this method has certain requirements on the footprint of the mold, and cannot meet the multi-angle core pulling requirements in limited space; in addition, due to the increase or decrease of the mold volume, the stability requirements during the demolding process.

[0003] To solve the above problems, patent CN107901355A, the invention name of which is "Multi-angle stacked core pulling mechanism for injection mold", proposes a mechanism for demoulding cores set at two different angles by driving the oil cylinder. This technical solution is to start the oil cylinder to drive the core pulling slider and the core body to slide after the mold is opened, so an additional oil cylinder is required, which increases the complexity of the mechanism to a certain extent, as well as the cost of the overall mechanism; on the other hand, the oil cylinder needs to be started after the mold is opened, which prolongs the time consumption of the core pulling action and reduces the efficiency of the core pulling.

[0004] Designing a multi-angle core pulling device is an important technical problem that those skilled in the art need to solve. Utility Model Content

[0005] The purpose of the utility model is to solve the above problems existing in the prior art and to provide a multi-angle core pulling device.

[0006] The purpose of the utility model is achieved through the following technical solutions:

[0007] A multi-angle core pulling device comprises a fixed mold and a movable mold arranged above the fixed mold; both the fixed mold and the movable mold are formed with a receiving groove for accommodating a product and a groove for accommodating a slider assembly; the slider assembly is located at one end of the fixed mold, and comprises a first core pulling mechanism and a second core pulling mechanism, wherein the second core pulling mechanism is movably arranged on the first core pulling mechanism; the first core pulling mechanism moves along the side wall direction of the movable mold; the moving direction and angle of the second core pulling mechanism are inconsistent with the moving direction and angle of the first core pulling mechanism.

[0008] Preferably, the first core-pulling mechanism includes a base and a shifting block inserted into and passing through the base; one end of the base abuts against the inner wall of the accommodating groove, and one of the core ends of the product is placed in the base; the top of the shifting block is connected to the movable mold.

[0009] Preferably, a first guide block is disposed at one end of the fixed mold, the first guide blocks are located at both sides of the base, and the base moves along a setting direction of the first guide block.

[0010] Preferably, the second core-pulling mechanism includes a slider seat and a second shifting block inserted into the slider seat; the slider seat is slidably disposed on the receiving groove of the base, and the other core end of the product is placed in the slider seat; the top end of the second shifting block is connected to the movable mold.

[0011] Preferably, second guide blocks are arranged on both sides of the slider seat, and the second guide blocks are arranged at an angle with the first guide blocks; the slider seat moves along the setting direction of the second guide blocks, which is inconsistent with the moving direction of the base.

[0012] Preferably, a spring connector is provided between the slider seat and the receiving groove; the spring connector is provided on the slider seat at an end portion close to the fixed mold.

[0013] Preferably, the first shift block and the second shift block both include a vertical portion and a bent portion, and the bent portion is arranged at an angle to the vertical portion.

[0014] Preferably, a through hole is formed on the base; a vertical surface matching the vertical portion and an inclined surface matching the bent portion are formed in the through hole; in the mold closing state, the distance between the bent portion and the top of the inclined surface is not less than 10 mm; in the fully open mold state, the distance between the base and the fixed mold is not less than 5 mm.

[0015] Preferably, a shift block groove is formed on the slider seat, the shift block groove is inclined, and its inclination angle is consistent with the inclination angle of the bending portion; in the mold closing state, the bottom of the second shift block contacts the bottom of the shift block groove; in the semi-open mold state, the distance between the end of the spring connector provided on the slider seat and the groove wall of the receiving groove is not less than 3 mm.

[0016] The advantages of the technical solution of the utility model are mainly reflected in:

[0017] By arranging a sliding assembly at the parting surface of the movable mold and the movable mold, the first core pulling mechanism and the second core pulling mechanism are respectively started during the mold opening process, so that two core pulling actions in two different directions and different angles can be achieved during one demolding process, which is conducive to fully automated production, saves time and effort, saves labor, has a simple structure, and reduces production costs;

[0018] During the demoulding process, the first and second shift blocks move synchronously with the movable mold, and when the distance between the movable mold and the fixed mold is not less than 10mm, the second shift block drives the second core pulling mechanism to complete a core pulling action; when the distance between the movable mold and the fixed mold is greater than 10mm, the first core pulling mechanism is started, and when the demoulding is completed, the first core pulling mechanism completes a core pulling action; it meets the multi-angle core pulling requirements when multiple core pulling mechanisms cannot be set due to limited space;

[0019] The first and second shift blocks are designed as bent structures, and the bent parts respectively contact the groove wall of the shift block groove or the inclined surface of the through hole, thereby driving the slider seat or the base to move, and realizing the core pulling action after the movement is completed. The structure is simple and the core pulling efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 : A three-dimensional diagram of a preferred embodiment of the utility model;

[0021] Figure 2 : A top view of a preferred embodiment of the utility model;

[0022] Figure 3 : A cross-sectional view of a mold closing state of a preferred embodiment of the utility model;

[0023] Figure 4 : A cross-sectional view of a semi-open mold state of a preferred embodiment of the utility model;

[0024] Figure 5 : A cross-sectional view of a fully open mold state of a preferred embodiment of the utility model. DETAILED DESCRIPTION

[0025] The purpose, advantages and features of the present invention will be illustrated and explained through the non-limiting description of the following preferred embodiments. These embodiments are only typical examples of the application of the technical solution of the present invention, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of protection claimed by the present invention.

[0026] In the description of the scheme, it should be noted that the terms "center", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. Moreover, in the description of the scheme, with the operator as a reference, the direction close to the operator is the proximal end, and the direction away from the operator is the distal end.

[0027] like Figure 1 to Figure 2 As shown, the utility model discloses a multi-angle core pulling device, including a fixed mold and a movable mold arranged above the fixed mold. The fixed mold and the movable mold are both formed with a receiving groove for accommodating products and a groove 30 for accommodating a slider assembly 100. Since the fixed mold and the movable mold are known prior art, their specific structures are not described here. The slider assembly 100 is located at one end of the fixed mold, and includes a first core pulling mechanism 1 and a second core pulling mechanism 2; wherein the second core pulling mechanism 2 is movably arranged on the first core pulling mechanism 1. The first core pulling mechanism 1 moves along the side wall direction of the movable mold; the moving direction and angle of the second core pulling mechanism 2 are inconsistent with the moving direction and angle of the first core pulling mechanism 1. By arranging a sliding assembly at the parting surface of the movable mold and the movable mold, the first core pulling mechanism and the second core pulling mechanism are respectively started during the mold opening process, so that two core pulling actions in two different directions and different angles can be realized during one demolding process, which is conducive to fully automated production, saving time and effort, saving labor, and having a simple structure and reducing production costs.

[0028] Specific, combined Figure 1 and Figure 4 As shown, the first core-pulling mechanism 1 includes a base 11 and a shifting block 12 inserted into and passing through the base 11. One end of the base 11 abuts against the inner wall of the receiving groove, and the two structures match. One end of the core of the product is placed in the base 11; the top end of the shifting block 12 is connected to the movable mold, and the shifting block 12 drives the base 11 to move.

[0029] Further, such as Figure 3As shown, the shift block 12 includes a vertical portion 121 and a bent portion 122, and the bent portion 122 is set at an angle with the vertical portion 121. A through hole 10 is formed on the base 11; a vertical surface 101 matching the vertical portion 121 and an inclined surface 102 matching the bent portion 122 are formed in the through hole 10. In the mold closing state, the distance between the bent portion 122 and the top of the inclined surface 101 is not less than 10mm; in the semi-open mold state, the bent portion 122 of the shift block 12 contacts the inclined surface 102; in the fully open mold state, the shift block 12 is separated from the base 11, and the distance between the base 11 and the fixed mold is not less than 5mm. The movable mold moves upward and drives the shift block 12 to move upward. When the bent portion 122 of the shift block 12 contacts the inclined surface 102, the shift block 12 drives the base 11 to move toward the end away from the movable mold, so as to realize the core pulling action of the core body placed in the base 11.

[0030] Furthermore, Figures 1 to 3 As shown, a first guide block 13 is disposed at one end of the fixed mold, and the first guide block 13 is located on both sides of the base 11. The moving direction of the base 11 is limited by the first guide block 13, so that the base 11 can only move along the setting direction of the first guide block 13.

[0031] Combination Figure 1 and Figure 5 As shown, the second core pulling mechanism 2 includes a slider seat 21 and a second shifting block 22 plugged into the slider seat 21. The slider seat 21 is slidably disposed on the receiving groove 110 of the base 11, and the other core end of the product is placed in the slider seat 21; the top end of the second shifting block 22 is connected to the movable mold.

[0032] Specifically, Figure 2 As shown, the slider seat 21 is provided with second guide blocks 23 on both sides, and the second guide blocks 23 are set at an angle with the first guide blocks 13; the angle includes any angle except 0°, which can be adjusted according to the use requirements to achieve two core pulling actions at different angles, and the setting directions and angles of the first core pulling mechanism and the second core pulling mechanism are not specifically limited. The guide blocks 23 allow the slider seat 21 to move only along the setting direction of the second guide blocks 23, and because the setting direction of the second guide blocks 23 is different from that of the first guide blocks 13, the moving directions of the slider seat 21 and the base 11 are inconsistent.

[0033] A space is provided between the slider seat 21 and the receiving groove 110 as shown in FIG. Figure 4The spring connector 24 shown in the figure is arranged on the end of the slider seat 21 close to the fixed mold. Further, the spring connector 24 is preferably a compression spring, that is, in the mold closing state, the end of the slider seat 21 abuts against one of the side walls of the receiving groove 110 close to the fixed mold. In order to ensure the stability of the abutment between the slider seat 21 and the groove wall of the receiving groove 110, it is preferred in the present application to open a groove for accommodating the spring connector 24 at the end of the slider seat 21; that is, one end of the spring connector 24 is connected to the groove wall of the receiving groove 110, and the other end is connected to the inner wall of the groove. In the semi-open mold state, when the parting surface between the fixed mold and the movable mold is opened to about 10mm, the end of the spring connector 24 arranged on the slider seat 21 is separated from the groove wall of the receiving groove 110, and preferably the distance between the two is not less than 3mm, so as to realize the core pulling action of the core body placed on the slider seat 21.

[0034] Further, such as Figure 3 As shown, the structure of the second shift block 22 is similar to that of the first shift block 12, and will not be described here. Furthermore, the diameter of the vertical portion 121 of the second shift block 22 is larger than the diameter of the bent portion 122, and a step surface is formed between the two; the step surface contacts the upper surface of the base 11 in the mold closing state. During the demolding process, the first shift block 12 and the second shift block 22 move synchronously with the movable mold, and when the distance between the movable mold and the fixed mold is not less than 10mm, the second shift block 22 drives the second core pulling mechanism to complete a core pulling action; when the distance between the movable mold and the fixed mold is greater than 10mm, the first core pulling mechanism is started, and when the demolding is completed, the first core pulling mechanism completes a core pulling action; it meets the multi-angle core pulling requirements where space is limited and multiple core pulling mechanisms cannot be set.

[0035] Furthermore, the slider seat 21 is formed with Figures 4 to 5 The shift block groove 20 shown is tilted, and its tilt angle is consistent with the tilt angle of the bending portion 122. In the mold closing state, the bottom of the second shift block 22 contacts the bottom of the shift block groove 20; in the semi-open mold state, the second shift block 22 is located above the shift block groove 20 and is separated from the shift block groove 20. The first shift block 12 and the second shift block 22 are designed as a bending structure, and the bending portion 122 contacts the groove wall of the shift block groove 20 or the inclined surface 102 of the through hole 10, thereby driving the slider seat 21 or the base 11 to move, and realizing the core pulling action after the movement is completed, with a simple structure and high core pulling efficiency.

[0036] The following is a brief description of the core pulling steps of this application:

[0037] S1, mold opening, the driving mechanism drives the movable mold to move upward relative to the fixed mold, and drives the shift block 12 and the shift block 22 to move upward synchronously; the shift block 22 drives the slider seat 21 to move relative to the base 11, until the parting surface is opened to about 10mm, the shift block 22 is separated from the slider seat 21, and drives the core body placed on the slider seat 21 to complete the core pulling action of the core body;

[0038] S2, the movable mold continues to move upward until the mold is completely opened; during the upward movement of the movable mold, the shift block 12 and the shift block 22 are driven to move upward synchronously; the shift block 12 drives the base 11 to move away from the end of the fixed mold until the shift block 12 is disengaged from the through hole 10, and drives the core body placed on the base 11 to complete the core pulling action.

[0039] In the above step S1, when the core pulling with the core body on the sliding seat 21 is completed, the gap between the slider seat 21 and the receiving groove 110 is preferably 3mm; and in this process, the shifting block 12 remains stationary and does not perform the core pulling action. In step S2, when the core pulling with the core body on the base 11 is completed, the gap between the base 11 and the fixed mold is preferably 5mm. In a small and tight mold space, a special, multi-angle shifting block is set to realize the core pulling action on the same part when the mold is opened, ensuring that the part is demolded and blanked without damage.

[0040] There are many implementation methods of the utility model, and all technical solutions formed by equivalent transformation or equivalent transformation fall within the protection scope of the utility model.

Claims

1. A multi-angle core pulling device, comprising a fixed mold and a movable mold arranged above the fixed mold; characterized in that: The fixed mold and the movable mold are both formed with a receiving groove for receiving the product and a groove (30) for receiving the slider assembly (100); the slider assembly (100) is located at one end of the fixed mold, and comprises a first core pulling mechanism (1) and a second core pulling mechanism (2), wherein the second core pulling mechanism (2) is movably arranged on the first core pulling mechanism (1); the first core pulling mechanism (1) moves along the side wall direction of the movable mold; the moving direction and angle of the second core pulling mechanism (2) are inconsistent with the moving direction and angle of the first core pulling mechanism (1).

2. The multi-angle core pulling device according to claim 1, characterized in that: The first core-pulling mechanism (1) comprises a base (11) and a shifting block (12) inserted into and passing through the base (11); one end of the base (11) abuts against the inner wall of the accommodating groove, and one of the core ends of the product is placed in the base (11); the top end of the shifting block (12) is connected to the movable mold.

3. The multi-angle core pulling device according to claim 2, characterized in that: A first guide block (13) is provided at one end of the fixed mold, the first guide block (13) is located on both sides of the base (11), and the base (11) moves along the setting direction of the first guide block (13).

4. The multi-angle core pulling device according to claim 3, characterized in that: The second core-pulling mechanism (2) comprises a slider seat (21) and a second shifting block (22) plugged into the slider seat (21); the slider seat (21) is slidably disposed on a receiving groove (110) of the base (11), and the other core end of the product is placed in the slider seat (21); the top end of the second shifting block (22) is connected to the movable mold.

5. The multi-angle core pulling device according to claim 4, characterized in that: Second guide blocks (23) are arranged on both sides of the slider seat (21), and the second guide blocks (23) are arranged at an angle with the first guide blocks (13); the slider seat (21) moves along the arrangement direction of the second guide blocks (23), which is inconsistent with the movement direction of the base (11).

6. The multi-angle core pulling device according to claim 5, characterized in that: A spring connector (24) is provided between the slider seat (21) and the receiving groove (110); the spring connector (24) is provided on the slider seat (21) at an end portion close to the fixed die.

7. The multi-angle core pulling device according to claim 6, characterized in that: The first shift block (12) and the second shift block (22) both comprise a vertical portion (121) and a bent portion (122), and the bent portion (122) is arranged at an angle to the vertical portion (121).

8. The multi-angle core pulling device according to claim 7, characterized in that: A through hole (10) is formed on the base (11); a vertical surface (101) matching the vertical portion (121) and an inclined surface (102) matching the bent portion (122) are formed in the through hole (10); in a mold-closed state, the distance between the bent portion (122) and the top of the inclined surface (102) is not less than 10 mm; in a fully open mold state, the distance between the base (11) and the fixed mold is not less than 5 mm.

9. The multi-angle core pulling device according to claim 8, characterized in that: A shift block groove (20) is formed on the slider seat (21), and the shift block groove (20) is arranged to be inclined, and its inclination angle is consistent with the inclination angle of the bending portion (122); in the mold closing state, the bottom of the second shift block (22) contacts the bottom of the shift block groove (20); in the mold half-open state, the distance between the end of the spring connector (24) provided on the slider seat (21) and the groove wall of the receiving groove (110) is not less than 3 mm.

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