Novel inclined core-pulling structure

Abstract

The utility model discloses a novel inclined core-pulling structure which comprises a sliding block body, a male mold inclined top and a sliding block shovel base which are arranged in a mold core, the sliding block shovel base is movably arranged on one side of the sliding block body, a sliding block base is fixedly arranged on the other side of the sliding block body, a fixing block is arranged on the upper end face of the sliding block base, and the fixing block is fixedly arranged in the mold core. A sliding groove is formed in the side, away from the sliding block body, of the fixing block, an inclined drawing circle insert core is movably arranged in the sliding groove in a sleeved mode, one end of the inclined drawing circle insert core is connected with a sliding rail arranged on the sliding block base in a sliding mode, and the other end of the inclined drawing circle insert core is matched with a plastic part on a male mold inclined top to conduct core pulling; the sliding block shovel base drives the sliding block body and the sliding block base to move left and right, the sliding rail is synchronously driven to move, then the oblique drawing circle insert core is linked to draw along the sliding groove, and core pulling of the plastic part is achieved. The whole structure is simple in machining and mold assembling, and subsequent mold maintenance is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of plastic moulds, and in particular relates to a novel oblique core-pulling structure. Background Art

[0002] The traditional inclined core-pulling mold is mainly driven by the oil cylinder to drive the top plate, the top plate drives the slider seat, and the slider seat is connected to the slider insert. In this way, the up and down movement of the oil cylinder drives the slider to demould and remove the undercut of the product structure. The tunnel hole is integrated on the mold, which is not conducive to wire cutting and CNC processing, and is difficult to assemble. It is very troublesome to repair later and the maintenance cost is also very high.

[0003] In addition, the traditional mold structure is complex and costly, and auxiliary mechanisms such as oil cylinders and top plates need to be added. In addition, during the oil cylinder process, due to the existence of unstable factors, the mechanism is damaged, and in severe cases, the mold is scrapped, affecting the production of plastic parts.

[0004] Therefore, the present application designs a new type of oblique core pulling structure, which cooperates with the slider core pulling by setting a fixed block. It does not need to use a cylinder to drive the slider. Instead, a relatively stable and simple mechanical integrated structure is used. It is convenient for processing and maintenance, stable and reliable, and greatly reduces the cost of mold manufacturing and maintenance. Utility Model Content

[0005] In order to make up for the deficiencies of the prior art, the utility model provides a novel oblique core-pulling structure, comprising a slider body, a male mold oblique top and a slider shovel base arranged in a mold core, the slider shovel base being movably arranged on one side of the slider body, and a slider base being fixedly arranged on the other side of the slider body, a fixed block being arranged on the upper end surface of the slider base, the fixed block being fixedly arranged in the mold core, and a slide groove being arranged on the side of the fixed block away from the slider body, an oblique round insert being movably sleeved in the slide groove, one end of the oblique round insert being slidably connected to a slide rail arranged on the slider base, and the other end of the oblique round insert being cooperated with the plastic part on the male mold oblique top for core pulling; the slider shovel base drives the slider body and the slider base to move left and right, synchronously drives the movement of the slide rail, and then links the pulling and drawing action of the oblique round insert along the slide groove to realize the core pulling of the plastic part.

[0006] Furthermore, a T-shaped slot is provided on one side of the slider body, and a T-shaped protrusion which is clamped and fixed with the T-shaped slot is provided on one side of the slider base.

[0007] Furthermore, a side of the slider base away from the slider body is arranged as an inclined surface, and the slide rail is arranged on the inclined surface.

[0008] Furthermore, the inclined round insert comprises an inclined rod body, a core-pulling part is arranged at one end of the inclined rod body, and a sliding part is arranged at the other end, the inclined rod body and the core-pulling part are movably sleeved in the slide groove, and the sliding part is slidably connected to the slide rail.

[0009] Furthermore, a first guiding inclined surface is provided at the connection between the core-pulling portion and the oblique rod body, and the outer diameter of the core-pulling portion is smaller than the outer diameter of the oblique rod body.

[0010] Furthermore, the sliding portion includes a connecting end and a sliding end, and the sliding end is engaged with the slide rail and moves linearly along the slide rail.

[0011] Furthermore, a second guiding inclined surface is provided at the connection between the inclined rod body and the connecting end, and the outer diameter of the inclined rod body is smaller than the outer diameter of the connecting end.

[0012] Furthermore, an inclined guide column is provided on the shovel base of the slider, and an inclined guide groove is provided on the slider body which passes through the slider from top to bottom, and the inclined guide column is movably sleeved with the inclined guide groove.

[0013] Furthermore, an inclined injection hole is provided at the bottom of the plastic part, which corresponds to the inclined round insert.

[0014] Compared with the prior art, the utility model has the following advantages: the utility model drives the slider body and the slider base to move forward and backward by moving the inclined guide column, drives the inclined circular insert to move linearly along the slide rail, and the inclined circular insert to synchronously move smoothly and repeatedly along the slide groove of the fixed block; the overall structure processing and assembly mold are simple, which is convenient for subsequent mold maintenance, and practice has proved that compared with the traditional structure with added movable plates, this structure is not only safe, stable and efficient, but also can save space and reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a structural diagram of the mold opening state of the utility model;

[0017] Figure 3 This is a structural diagram of the mold closing state of the utility model;

[0018] Figure 4 It is a side view of the plastic part of the utility model;

[0019] Figure 5 It is a three-dimensional diagram of the plastic part of the utility model.

[0020] In the figure: 1-slider body, 11-oblique guide groove, 12-T-slot, 2-slider shovel base, 3-slider base, 31-slide rail, 4-fixed block, 41-slide groove, 5-oblique round insert, 51-oblique rod body, 52-core pulling part, 53-sliding part, 531-connecting end, 532-sliding end, 6-male mold oblique top, 7-plastic part, 71-injection molding oblique hole, 72-clamping plate. DETAILED DESCRIPTION

[0021] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the present invention is further described below in conjunction with the accompanying drawings.

[0022] like Figure 1-Figure 5 As shown, a novel inclined core-pulling structure comprises a slider body 1, a male mold inclined top 6 and a slider shovel base 2 arranged in a mold core, the slider shovel base 2 is movably arranged on one side of the slider body 1 (that is, an inclined guide column is arranged on the slider shovel base 2, and the slider body 1 is provided with an inclined guide groove 11 which passes through from top to bottom, and the inclined guide column is movably sleeved with the inclined guide groove 11), a slider base 3 is fixedly arranged on the other side of the slider body 1, a fixed block 4 is arranged on the upper end surface of the slider base 3, the fixed block 4 is fixedly arranged in the mold core, and a slide groove 41 is arranged on the side of the fixed block 4 away from the slider body 1, and the slide groove An obliquely drawn round insert 5 is movably sleeved in the inner part 41, one end of which is slidably connected to the slide rail 31 provided on the slider base 3, and the other end of which cooperates with the plastic part 7 on the male mold inclined top 6 to perform core pulling (an injection inclined hole 71 is provided at the bottom of the plastic part 7, which corresponds to the obliquely drawn round insert 5); the slider shovel base 2 drives the slider body 1 and the slider base 3 to move left and right, synchronously driving the movement of the slide rail 31, and then links the obliquely drawn round insert 5 to pull along the slide groove 41, so as to realize the core pulling operation of the injection inclined hole 71 of the plastic part 7. In addition, at least one clamping plate 72 is provided on the top of the back of the plastic part 7, and the plastic part 7 is clamped with the male mold inclined top 6 through the clamping plate 72.

[0023] A T-shaped slot 12 is disposed on one side of the slider body 1, and a T-shaped protrusion is disposed on one side of the slider base 3 and is fixedly engaged with the T-shaped slot 12. A side of the slider base 3 away from the slider body 1 is disposed as an inclined surface, and the slide rail 31 is disposed on the inclined surface.

[0024] When assembling the mold, first, the slider base 3 is assembled with the slider body 1 through the T-shaped protrusion and the T-shaped groove 12, and then put into the mold core; then the oblique round insert 5 is inserted into the slide groove 41 of the fixed block 4, and the oblique round insert 5 is connected to the slide rail 31 on the slider base 3, and the assembly process of the structure of the present application is completed. However, the conventional tunnel slider structure of this type does not have a fixed block, which makes the processing very difficult, and when assembling and matching the slider body 1 and the slider base 3, it is very easy to damage the oblique round insert 5, which increases the difficulty of assembly.

[0025] Specifically, in order to make the sliding cooperation between the oblique round insert 5 and the slide groove 41 smoother, the oblique round insert 5 includes an oblique rod body 51, a core-pulling portion 52 is provided at one end of the oblique rod body 51, and a sliding portion 53 is provided at the other end. The oblique rod body 51 and the core-pulling portion 52 are movably inserted into the slide groove 41, and the sliding portion 53 is slidably connected to the slide rail 31. A first guiding inclined surface is provided at the connection between the core-pulling portion 52 and the oblique rod body 51, and the outer diameter of the core-pulling portion 52 is smaller than the outer diameter of the oblique rod body 51. The sliding portion 53 includes a connecting end 531 and a sliding end 532. The sliding end 532 is clamped with the slide rail 31 and moves linearly along the slide rail 31. A second guiding inclined surface is provided at the connection between the oblique rod body 51 and the connecting end 531, and the outer diameter of the oblique rod body 51 is smaller than the outer diameter of the connecting end 531.

[0026] like Figure 2 The figure shows the mold opening state: after the injection filling is completed, the male and female molds are opened, and the inclined guide column (not shown in the figure) moves the slider body 1 to drive the slider base 3 to move to the right. At this time, under the guidance of the slider base 3, the oblique round insert 5 moves steadily along the slide rail 31. Since the fixed block 4 is fixedly set on the mold core, the rightward movement of the slider base 3 synchronously drives the oblique round insert 5 to be pulled downward along the slide groove 41, thereby disengaging from the injection inclined hole 71 of the plastic part 7, thereby realizing the oblique core pulling action of the entire tunnel slider.

[0027] like Figure 3 The figure shows the mold closing state. It can be seen that before each filling, under the action of the slider shovel base 2, the slider body 1 can be firmly pressed, and the matching surface of the oblique round insert 5 and the mold core can be well sealed, so that burrs are not easy to be generated. In addition, the overall structure is small and exquisite, saving mold space, and no abnormal noise will be generated during the entire production process, thereby ensuring the stability of the entire mold movement; and the matching of the slider body 1 with the slider shovel base 2 and the slider base 3, and the matching of the oblique round insert 5 with the fixed block 4 and the slider base 3 are all through the inlay structure, which is simple to process and reduces the difficulty and cost of mold manufacturing.

[0028] The oblique core-pulling structure of the present application can stably and reliably achieve sealing and core pulling during mold opening and closing processes. By adding a fixed block structure that is convenient for processing, there is no need to use a cylinder to drive the slider (i.e., the slider body 1 and the slider base 3). Instead, a relatively stable and simple mechanical integrated structure is used, which is convenient for processing and maintenance, stable and reliable, and greatly reduces the cost of mold manufacturing and maintenance.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A novel oblique core pulling structure, comprising a slider body (1) arranged in a mold core, a male mold oblique top (6) and a slider shovel base (2), wherein the slider shovel base (2) is movably arranged on one side of the slider body (1), characterized in that: A slider base (3) is fixedly arranged on the other side of the slider body (1), and a fixed block (4) is arranged on the upper end surface of the slider base (3). The fixed block (4) is fixedly arranged in the mold core, and a slide groove (41) is arranged on the side of the fixed block (4) away from the slider body (1). An oblique round insert (5) is movably sleeved in the slide groove (41), and one end of the oblique round insert (5) is slidably connected to a slide rail (31) arranged on the slider base (3), and the other end of the oblique round insert (5) cooperates with the plastic part (7) on the male mold oblique top (6) to pull the core; the slider shovel base (2) drives the slider body (1) and the slider base (3) to move left and right, synchronously drives the movement of the slide rail (31), and then links the oblique round insert (5) to pull and draw along the slide groove (41), so as to realize the core pulling of the plastic part (7).

2. A novel oblique core-pulling structure according to claim 1, characterized in that: A T-shaped slot (12) is provided on one side of the slider body (1), and a T-shaped protrusion that is clamped and fixed to the T-shaped slot (12) is provided on one side of the slider base (3).

3. A novel oblique core pulling structure according to claim 1, characterized in that: A side of the slider base (3) away from the slider body (1) is arranged as an inclined surface, and the slide rail (31) is arranged on the inclined surface.

4. A novel oblique core-pulling structure according to claim 3, characterized in that: The inclined round insert (5) comprises an inclined rod body (51), one end of the inclined rod body (51) is provided with a core-pulling portion (52), and the other end is provided with a sliding portion (53), the inclined rod body (51) and the core-pulling portion (52) are movably sleeved in the slide groove (41), and the sliding portion (53) is slidably connected to the slide rail (31).

5. A novel oblique core-pulling structure according to claim 4, characterized in that: A first guiding inclined surface is provided at the connection between the core-pulling portion (52) and the inclined rod body (51); the outer diameter of the core-pulling portion (52) is smaller than the outer diameter of the inclined rod body (51).

6. A novel oblique core-pulling structure according to claim 5, characterized in that: The sliding portion (53) comprises a connecting end (531) and a sliding end (532); the sliding end (532) is engaged with the sliding rail (31) and moves linearly along the sliding rail (31).

7. A novel oblique core-pulling structure according to claim 6, characterized in that: A second guiding inclined surface is provided at the connection between the inclined rod body (51) and the connecting end (531); the outer diameter of the inclined rod body (51) is smaller than the outer diameter of the connecting end (531).

8. A novel oblique core pulling structure according to any one of claims 1 to 7, characterized in that: The slider shovel base (2) is provided with an inclined guide column, the slider body (1) is provided with an inclined guide groove (11) which passes through from top to bottom, and the inclined guide column is movably sleeved with the inclined guide groove (11).

9. A novel oblique core pulling structure according to any one of claims 1 to 7, characterized in that: The bottom of the plastic part (7) is provided with an injection molding inclined hole (71) corresponding to the inclined round insert (5).

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