Bidirectional linkage inclined guide pillar core-pulling mechanism of injection mold

Abstract

The utility model discloses a bi-directional linkage inclined guide pillar core-pulling mechanism of an injection mold, which comprises a movable mold B plate, the inner bottom wall of the movable mold B plate is fixedly connected with a movable mold insert, the upper surface of the movable mold insert is provided with a second chute, and the inner wall of the second chute is connected with an inclined core in a sliding manner. After a molded plastic part is cured, firstly, an upper fixing block is moved upwards, an inclined guide column and a fixed mold insert are driven by the upper fixing block to move upwards, a large sliding block moves leftwards to the position of a second stop block by utilizing relative sliding of the inclined guide column and a third sliding groove in the upward moving process of the inclined guide column, and a bent pin is driven by the large sliding block to move leftwards; and the lower inclined surface of the bent pin presses the small sliding block, so that the small sliding block drives the inclined mold core to move downwards, the limitation on the molded plastic part is relieved, the injection molding machine pushes the push rod to push the molded plastic part away from the mold, and the effect of moving a single rod piece to complete bidirectional demolding is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of core pulling and demoulding of injection molds, in particular to a two-way linked inclined guide column core pulling mechanism for an injection mold. Background Art

[0002] Injection molding products have been used in many fields due to their advantages such as low production cost, short molding cycle and precise size. However, the products often have the problem of difficulty in demoulding during the production process.

[0003] After searching, it was found in the Chinese Public Utility Model Patent Publication No. CN206048725U that a straight ejector core and an inclined core pulling synchronous linkage demolding device for an injection mold was disclosed. The device uses a top plate to push a straight ejector core block and an inclined ejector core block to synchronously push the product upward to separate from the dynamic mold core. At the same time, the inclined core pulling block is separated from the straight ejector core block from bottom to top and right to make the concave surface core pulled out from the product undercut. This technical solution enables the core pulling and demolding of the injection mold with a narrow undercut position. However, the device requires the straight ejector rod, the inclined ejector rod, and the inclined core pulling block to reach the specified position at the same time before demolding is completed. The mutual coordination requirements of the devices are high, which increases the production cost and the operation safety and maintenance work. Therefore, it is necessary to design an injection mold bidirectional linkage inclined guide column core pulling mechanism that can be easily operated to simultaneously drive two sliders to pull the core in different directions. Utility Model Content

[0004] The main purpose of the utility model is to provide a two-way linkage inclined guide pin core pulling mechanism for an injection mold, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A two-way linkage inclined guide column core pulling mechanism for an injection mold comprises a movable mold B plate, the inner bottom wall of the movable mold B plate is fixedly connected to a movable mold insert, the upper surface of the movable mold insert is provided with a second slide groove, the inner wall of the second slide groove is slidably connected to an inclined core, the bottom end of the inclined core is fixedly connected to a small slider, one side of the small slider is provided with a first slide groove, the inner wall of the first slide groove is slidably connected to a bent pin, one side of the bent pin is fixedly connected to a large slider by a screw, the upper surface of the large slider is provided with a third slide groove, and the inner wall of the third slide groove is slidably connected to an inclined guide column.

[0007] In order to achieve the effect of connecting the large slider, as an injection mold bidirectional linkage inclined guide column core pulling mechanism of the utility model, the outer surface of the inclined guide column is fixedly connected to an upper fixed block, and the lower surface of the upper fixed block is fixedly connected to a wedge block.

[0008] In order to prevent excessive wear of the clamping block and the large slider, the utility model provides a two-way linkage inclined guide column core pulling mechanism for an injection mold, one side of the large slider is fixedly connected with a wear-resistant block, and the upper surface of the movable mold B plate is fixedly connected with a second stopper by screws.

[0009] In order to achieve the effect of limiting the small sliding block, as a two-way linkage inclined guide column core pulling mechanism for an injection mold of the utility model, one side of the movable mold insert is fixedly connected with a first stopper by a screw.

[0010] In order to achieve the effect of limiting the inclined guide column, as a two-way linkage inclined guide column core pulling mechanism for an injection mold of the utility model, a positioning hole is opened on the upper surface of the upper fixing block.

[0011] In order to achieve the effect of limiting the fixed mold insert, as a two-way linkage inclined guide column core pulling mechanism for an injection mold of the utility model, the lower surface of the upper fixed block is fixedly connected with the fixed mold insert.

[0012] In order to achieve the effect of pulling the oblique core, as a two-way linkage oblique guide column core pulling mechanism for an injection mold of the utility model, the inner bottom wall of the movable mold B plate is fixedly connected with a pressure block, and the inner wall of the pressure block is slidably connected with a small slider.

[0013] In order to achieve the effect of forming a molded plastic part, as a two-way linkage inclined guide column core pulling mechanism for an injection mold of the utility model, the lower surface of the fixed mold insert is movably connected with the molded plastic part.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The bidirectional linkage oblique guide column core pulling mechanism of the injection mold is provided with a large slider, an oblique core, a small slider, a bent pin movable mold insert, a movable mold B plate, an oblique guide column, a first slide groove, a second slide groove and a third slide groove. When the molded plastic part is solidified, the upper fixed block is first moved upward, and the oblique guide column and the fixed mold insert are driven to move upward by the upper fixed block. During the process of the oblique guide column moving upward, the relative sliding of the oblique guide column and the third slide groove is utilized to move the large slider leftward to the position of the second stop block. During the process of the large slider driving the bent pin to move leftward, the lower inclined surface of the bent pin presses down the small slider, so that the small slider drives the oblique core to move downward, and the limit on the molded plastic part is released. The injection molding machine pushes the push rod to push the molded plastic part away from the mold, so as to move a single rod to complete the core pulling in different directions and simultaneously drive the two sliders to perform bidirectional demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the front cross-section structure of a two-way linkage inclined guide column core pulling mechanism for an injection mold according to Example 1 of the utility model;

[0017] Figure 2This is a schematic diagram of the front section structure of the mold opening of a two-way linkage inclined guide pin core pulling mechanism for an injection mold according to Example 1 of the utility model;

[0018] Figure 3 This is a schematic diagram of the front cross-section structure of a molded plastic part in a two-way linkage inclined guide column core pulling mechanism of an injection mold according to Example 1 of the utility model;

[0019] Figure 4 This is a two-way linkage inclined guide column core pulling mechanism for an injection mold according to embodiment 1 of the utility model. Figure 1 The enlarged structural diagram at A in the middle;

[0020] Figure 5 This is a two-way linkage inclined guide column core pulling mechanism for an injection mold according to embodiment 1 of the utility model. Figure 2 Enlarged structural diagram at B in the middle.

[0021] In the figure: 1. fixed mold insert; 2. large slider; 3. oblique core; 4. small slider; 5. bent pin; 6. pressure block; 7. first stopper; 8. movable mold insert; 9. movable mold B plate; 10. second stopper; 11. positioning hole; 12. wear-resistant block; 13. wedge block; 14. oblique guide column; 15. upper fixed block; 16. molded plastic part; 17. first slide groove; 18. second slide groove; 19. third slide groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1

[0024] like Figure 1-5 As shown, a bidirectional linkage inclined guide column core pulling mechanism for an injection mold comprises a movable mold B plate 9, the inner bottom wall of the movable mold B plate 9 is fixedly connected with a movable mold insert 8, the upper surface of the movable mold insert 8 is provided with a second slide groove 18, the inner wall of the second slide groove 18 is slidably connected with an inclined core 3, the bottom end of the inclined core 3 is fixedly connected with a small slider 4, a first slide groove 17 is provided on one side of the small slider 4, a bent pin 5 is slidably connected to the inner wall of the first slide groove 17, a large slider 2 is fixedly connected to one side of the bent pin 5 by a screw, a third slide groove 19 is provided on the upper surface of the large slider 2, and the inner wall of the third slide groove 19 is slidably connected with an inclined guide column 14.

[0025] During specific use, through the arrangement of the large slider 2, the oblique core 3, the small slider 4, the bent pin 5, the movable mold insert 8, the movable mold B plate 9, the oblique guide column 14, the first slide groove 17, the second slide groove 18 and the third slide groove 19, when the molded plastic part 16 is solidified, the upper fixed block 15 is first moved upward, and the oblique guide column 14 and the fixed mold insert 1 are driven to move upward by the upper fixed block 15. During the upward movement of the oblique guide column 14, the relative sliding of the oblique guide column 14 and the third slide groove 19 is utilized to move the large slider 2 to the left to the position of the second stop block 10. During the process of the large slider 2 driving the bent pin 5 to move to the left, the lower inclined surface of the bent pin 5 presses down the small slider 4, so that the small slider 4 drives the oblique core 3 to move downward, thereby releasing the limit on the molded plastic part 16 and facilitating demoulding.

[0026] In this embodiment, an upper fixing block 15 is fixedly connected to the outer surface of the inclined guide column 14 , and a wedge block 13 is fixedly connected to the lower surface of the upper fixing block 15 .

[0027] During specific use, the inclined guide pillar 14 is provided to move the large slide block 2 to complete demoulding in the horizontal direction.

[0028] In this embodiment, a wear-resistant block 12 is fixedly connected to one side of the large sliding block 2, and a second stopper 10 is fixedly connected to the upper surface of the movable mold B plate 9 by screws.

[0029] During specific use, the wear-resistant block 12 is provided to reduce the mutual wear between the wedge block 13 and the large sliding block 2 .

[0030] In this embodiment, one side of the movable mold insert 8 is fixedly connected to the first stopper 7 by means of screws.

[0031] During specific use, the first stopper 7 is provided to limit the moving distance of the small sliding block 4 .

[0032] In this embodiment, a positioning hole 11 is formed on the upper surface of the upper fixing block 15 .

[0033] During specific use, the positioning hole 11 is provided to play the role of limiting the inclined guide column 14 .

[0034] In this embodiment, the lower surface of the upper fixing block 15 is fixedly connected with the fixed mold insert 1 .

[0035] During specific use, the upper fixing block 15 is provided to limit the wedge block 13 and the fixed mold insert 1 .

[0036] In this embodiment, a pressing block 6 is fixedly connected to the inner bottom wall of the movable mold B plate 9, and a small sliding block 4 is slidably connected to the inner wall of the pressing block 6.

[0037] During specific use, the small slider 4 is arranged to pull out the oblique core 3 .

[0038] In this embodiment, a molded plastic part 16 is movably connected to the lower surface of the fixed mold insert 1 .

[0039] When used specifically, the fixed mold insert 1 and the movable mold insert 8 are arranged to form a molded plastic part 16 .

[0040] Working principle: After the molded plastic part 16 is solidified, the upper fixed block 15 is first moved upward, and the upper fixed block 15 drives the inclined guide column 14 and the fixed mold insert 1 to move upward. During the upward movement of the inclined guide column 14, the relative sliding of the inclined guide column 14 and the third slide groove 19 is used to make the large slider 2 move left to the position of the second stop block 10. During the process of the large slider 2 driving the bent pin 5 to move left, the lower inclined surface of the bent pin 5 presses down the small slider 4, so that the small slider 4 drives the oblique core 3 to move downward, and the limit on the molded plastic part 16 is released. After completing the lateral core pulling, the injection molding machine pushes the push rod to push the molded plastic part 16 away from the mold.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A two-way linkage inclined guide pin core pulling mechanism for an injection mold, comprising a movable mold B plate (9), characterized in that: The inner bottom wall of the movable mold B plate (9) is fixedly connected to a movable mold insert (8), the upper surface of the movable mold insert (8) is provided with a second slide groove (18), the inner wall of the second slide groove (18) is slidably connected to an inclined core (3), the bottom end of the inclined core (3) is fixedly connected to a small slider (4), one side of the small slider (4) is provided with a first slide groove (17), the inner wall of the first slide groove (17) is slidably connected to a bent pin (5), one side of the bent pin (5) is fixedly connected to a large slider (2) by means of screws, the upper surface of the large slider (2) is provided with a third slide groove (19), the inner wall of the third slide groove (19) is slidably connected to an inclined guide column (14).

2. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 1, characterized in that: An upper fixing block (15) is fixedly connected to the outer surface of the inclined guide column (14), and a wedge block (13) is fixedly connected to the lower surface of the upper fixing block (15).

3. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 1, characterized in that: A wear-resistant block (12) is fixedly connected to one side of the large sliding block (2), and a second stopper (10) is fixedly connected to the upper surface of the movable mold B plate (9) via screws.

4. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 1, characterized in that: One side of the movable mold insert (8) is fixedly connected to a first stopper (7) via screws.

5. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 2, characterized in that: A positioning hole (11) is provided on the upper surface of the upper fixing block (15).

6. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 2, characterized in that: The lower surface of the upper fixed block (15) is fixedly connected with a fixed mold insert (1).

7. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 1, characterized in that: The inner bottom wall of the movable mold B plate (9) is fixedly connected to a pressing block (6), and the inner wall of the pressing block (6) is slidably connected to a small sliding block (4).

8. The injection mold bidirectional linkage inclined guide pin core pulling mechanism according to claim 6, characterized in that: The lower surface of the fixed mold insert (1) is movably connected to a molded plastic part (16).

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