Die with thread internal shrinkage structure

Abstract

The utility model belongs to the technical field of dies, and particularly relates to a die with a thread inward shrinkage structure, which comprises a bottom plate, a push plate, an ejector plate and a panel, the upper surface of the bottom plate is connected with two square irons, the tops of the square irons are connected with a plate B, the upper surface of the plate B is connected with the push plate, and the upper surface of the bottom plate between the two square irons is connected with the ejector plate. The ejector plate is connected to the lower surface of the push plate, the upper surface of the push plate is connected with a plate A, and the upper surface of the plate A is connected with a panel. According to the mold, when the telescopic rod contracts, the second insert can be driven to slide towards the interior of the contraction groove, then the ejector plate can push the push plate to move through the ejector pin, and the push plate moves to extrude the first insert through the rear mold core; the first insert is extruded to drive the guide sliding block to slide on the inner wall of the guide sliding groove and retract inwards in the sliding process, so that thread teeth of the product can be separated from the first insert and the thread groove of the first insert, and insert demolding of the internal thread product can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of molds, and in particular relates to a mold with a threaded inner shrinkage structure. Background Art

[0002] The mold is composed of various parts. Different molds are composed of different parts. Generally, it includes two parts: the movable mold and the fixed mold (or the male mold and the female mold). In industry, molds can be used to produce the required products by injection molding, blow molding, extrusion, die casting or forging, smelting, stamping and other methods. It can manufacture parts of specified shapes and sizes according to customer needs. It is an important tool to ensure product quality and improve production efficiency. It is widely used in manufacturing industries such as automobiles, electronic information, electrical appliances, aerospace and other fields.

[0003] After searching, the "positioning mechanism of a threaded mold" disclosed in the application number "CN202321631878.6" belongs to the same technical field as the present technical solution. The utility model: 1. The utility model is provided with a first fixed socket at the upper end of one side of the outer side of the mold shell, a second fixed socket at the lower end of the first fixed socket, a positioning block is provided on one side inside the second fixed socket, a second fitting surface is provided on one side of the positioning block, a third fitting surface is provided on one side of the second bronze guide sleeve, and a first fitting surface is provided on one side of the upper tooth insert. During actual use and injection molding, the first positioning pin is embedded in the first fixed socket and fits the first fitting surface, and at the same time, the second fitting surface on one side of the positioning block fits the third fitting surface. The fitting of the first fitting surface and the third fitting surface directly restricts the upper tooth insert and the second bronze guide sleeve. The restriction can directly limit and adjust the direction and angle of the threaded ring, and the first positioning pin and the second positioning pin can be directly pulled out during the injection molding process, which is convenient for positioning while avoiding the positioning structure affecting subsequent injection molding.

[0004] At present, there are usually two ways to demold the mold after producing products with internal thread structures: 1. Manual thread removal, after the product is demolded from the outer mold, the insert is manually removed to achieve the demolding effect; 2. Automatic thread removal, mainly through the motor driving the gear to rotate, and then drive the threaded shaft core to rotate to remove the plastic product.

[0005] However, both methods of demoulding inserts have limitations. The production efficiency is very low when demoulding by manual thread stripping, and the threaded part on the threaded shaft core is easily damaged by automatic thread stripping, thus affecting the quality of the product. Utility Model Content

[0006] The utility model aims to provide a mold with a threaded inner shrinkage structure, aiming to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mold with a threaded retracted structure, comprising a bottom plate, a push plate, an ejector plate and a panel, the upper surface of the bottom plate is connected to two square irons, the top of the square iron is connected to a B plate, the upper surface of the B plate is connected to a push plate, the upper surface of the bottom plate located between the two square irons is connected to an ejector plate, the ejector plate is connected to the lower surface of the push plate, the upper surface of the push plate is connected to an A plate, and the upper surface of the A plate is connected to a panel;

[0008] The upper surface of the push plate is embedded and connected with the rear mold core, and the inner wall of the rear mold core is provided with a limiting groove. The upper surface of the B plate is embedded and connected with an inner retraction rod, and the surface of the inner retraction rod is provided with a guide groove, and the inside of the guide groove is connected with a guide slider, and the surface of the guide slider is connected with a first insert, and the surface of the first insert is connected with a limiting block, and the surface of the inner retraction rod is provided with a contraction groove, and a telescopic rod is installed inside the contraction groove, and the end of the telescopic rod is connected to a second insert.

[0009] In order to facilitate the extrusion of the first insert through the movement of the push plate, as a preferred embodiment of the utility model, a mold with a threaded retracting structure, the retracting rod runs through the interior of the push plate, and the push plate and the retracting rod are slidably connected.

[0010] In order to facilitate limiting the position of the first insert through the cooperation of the limit groove and the limit block, as a preferred mold with a threaded retraction structure of the utility model, three limit grooves are provided, three first inserts are provided, and three limit blocks are provided on the surfaces of the three first inserts, and the limit blocks correspond to the limit grooves one by one.

[0011] In order to facilitate the formation of internal threads on the surface of the product during the injection molding process, as a preferred mold with a threaded retracted structure of the utility model, the outer surfaces of the three first inserts and the three second inserts can form a complete circle, and the surfaces of the first inserts and the second inserts are provided with a complete thread groove structure.

[0012] In order to facilitate the retraction of the first insert, as a preferred embodiment of the utility model, a mold with a threaded retraction structure is provided, wherein the guide groove is obliquely arranged on the surface of the retraction rod, and three guide grooves are provided, and the inclinations of the three guide grooves are the same.

[0013] In order to facilitate the first insert to slide on the surface of the retracted rod when being squeezed, as a preferred mold with a threaded retracted structure of the utility model, the guide slider is slidably connected to the retracted rod through a guide slot.

[0014] In order to facilitate the adjustment of the position of the second insert by the telescopic rod, as a preferred mold with a threaded retractable structure of the utility model, a telescopic structure is formed between the second insert and the telescopic rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses that when the internal thread injection molding product needs to be demoulded, the telescopic rod can be operated first, and the telescopic rod can be contracted when it is operated. When the telescopic rod is contracted, the second insert can be driven to slide into the contraction groove, so that the second insert can be retracted. Then the ejector plate can push the push plate to move through the ejector pin, and the push plate movement can drive the rear mold core to move. At the same time, when the push plate moves, the first insert can be squeezed through the limit block. The first insert can be squeezed and can drive the guide slider to slide on the inner wall of the guide slide groove. Since the guide slide groove is inclined, the three first inserts will retract in the process of sliding upward, so that the thread teeth of the product can be disengaged from the first insert and the thread groove of the first insert, so as to realize the retraction of the first insert. The insert demoulding of the internal thread product can be realized by the retraction of the first insert and the second insert. In this way, the automatic demoulding of the internal thread product can be realized, and the threaded part on the threaded shaft core can be avoided from being damaged when the motor is driven. The production efficiency is high and the qualified rate of the product will not be affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is an exploded view of the main structure of the utility model;

[0020] Figure 3 This is a cross-sectional view of the inner retracted rod connection structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the rear mold core structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the retracted structure of the utility model;

[0023] Figure 6 It is a shrinkage diagram of the shrinkage structure of the utility model;

[0024] Figure 7 This is a cross-sectional view of the retracted structure of the utility model;

[0025] Figure 8It is a schematic diagram of the structure of the utility model after the inward retraction is completed.

[0026] In the figure: 1. bottom plate; 2. square iron; 3. B plate; 4. push plate; 5. ejector plate; 6. A plate; 7. panel; 8. rear mold core; 9. limit groove; 10. retracted rod; 11. guide slide groove; 12. guide slider; 13. first insert; 14. contraction groove; 15. telescopic rod; 16. second insert; 17. limit block. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-Figure 8 The utility model provides the following technical solutions: a mold with a threaded retracted structure, comprising a bottom plate 1, a push plate 4, an ejector plate 5 and a panel 7, the upper surface of the bottom plate 1 is connected to two square irons 2, the top of the square iron 2 is connected to a B plate 3, the upper surface of the B plate 3 is connected to the push plate 4, the upper surface of the bottom plate 1 located between the two square irons 2 is connected to an ejector plate 5, the ejector plate 5 is connected to the lower surface of the push plate 4, the upper surface of the push plate 4 is connected to an A plate 6, and the upper surface of the A plate 6 is connected to the panel 7;

[0029] The upper surface of the push plate 4 is embedded and connected with the rear mold core 8, and the inner wall of the rear mold core 8 is provided with a limiting groove 9. The upper surface of the B plate 3 is embedded and connected with the retracted rod 10. The surface of the retracted rod 10 is provided with a guide groove 11. The inside of the guide groove 11 is connected with a guide slider 12. The surface of the guide slider 12 is connected with a first insert 13. The surface of the first insert 13 is connected with a limiting block 17. The surface of the retracted rod 10 is provided with a contraction groove 14. The inside of the contraction groove 14 is installed with a telescopic rod 15. The end of the telescopic rod 15 is connected with a second insert 16.

[0030] Preferably, the retracting rod 10 passes through the interior of the push plate 4, and the push plate 4 and the retracting rod 10 are slidably connected.

[0031] When in use, the ejector plate 5 pushes the push plate 4 to move through the ejector pins. When the push plate 4 moves, it can slide on the surface of the retracted rod 10, so that the position of the retracted rod 10 can be kept unchanged.

[0032] Preferably, three limiting grooves 9 are provided, three first inserts 13 are provided, and three limiting blocks 17 are provided on the surfaces of the three first inserts 13 . The limiting blocks 17 correspond to the limiting grooves 9 one by one.

[0033] During specific use, the rear mold core 8 can be pressed by the limiting groove 9, so that the first insert 13 can be pressed by the limiting block 17, so that the first insert 13 can move synchronously with the rear mold core 8 and the push plate 4.

[0034] Preferably, the outer surfaces of the three first inserts 13 and the three second inserts 16 can form a complete circle, and the surfaces of the first inserts 13 and the second inserts 16 are provided with a complete thread groove structure.

[0035] During specific use, the first insert 13 and the second insert 16 are provided with a complete thread groove structure on their surfaces, so that an internal thread structure can be easily formed on the surface of the injection molded product.

[0036] Preferably, the guide slot 11 is arranged obliquely on the surface of the retracted rod 10 , and three guide slots 11 are arranged, and the inclinations of the three guide slots 11 are the same.

[0037] During specific use, since the guide slot 11 is set at an inclination, the first insert 13 drives the guide slider 12 to slide inside the guide slot 11 and gather, that is, retract inward.

[0038] Preferably, the guide slide block 12 is slidably connected to the retracted rod 10 via the guide slot 11 .

[0039] During specific use, when the first insert 13 is squeezed, it can drive the guide slider 12 to slide inside the guide slot 11 , so that the movement direction of the first insert 13 can be limited.

[0040] Preferably, the second insert 16 and the telescopic rod 15 form a telescopic structure running inside the contraction groove 14, so that the second insert 16 can be retracted and demoulded.

[0041] During specific use, the telescopic rod 15 can drive the second insert 16 to move when it contracts.

[0042] Working principle: When using the mold with a threaded retraction structure, when the internal thread injection molded product needs to be demolded, the telescopic rod 15 can be operated first, and the telescopic rod 15 can be retracted during operation. When the telescopic rod 15 is retracted, it can drive the second insert 16 to slide into the shrinkage groove 14, and then the ejector plate 5 can push the push plate 4 to move through the ejector, and the movement of the push plate 4 can drive the rear mold core 8 to move. At the same time, when the push plate 4 moves, it can squeeze the first insert 13 through the limit block 17. The first insert 13 is squeezed and can drive the guide slider 12 to slide on the inner wall of the guide groove 11. Since the guide groove 11 is inclined, the three first inserts 13 will retract during the upward sliding process, so that the thread teeth of the product can be disengaged from the first insert 13 and the thread groove of the first insert 13, thereby realizing the insert demolding of the internal thread product.

[0043] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A mold with a threaded retracted structure, comprising a bottom plate (1), a push plate (4), an ejector plate (5) and a face plate (7), characterized in that: The upper surface of the bottom plate (1) is connected to two square irons (2), the top of the square irons (2) is connected to a B plate (3), the upper surface of the B plate (3) is connected to a push plate (4), the upper surface of the bottom plate (1) located between the two square irons (2) is connected to a pin plate (5), the pin plate (5) is connected to the lower surface of the push plate (4), the upper surface of the push plate (4) is connected to an A plate (6), and the upper surface of the A plate (6) is connected to a panel (7); The upper surface of the push plate (4) is connected with a rear mold core (8), and a limiting groove (9) is provided on the inner wall of the rear mold core (8). The upper surface of the B plate (3) is connected with an inner retractable rod (10), and a guide groove (11) is provided on the surface of the inner retractable rod (10). The interior of the guide groove (11) is connected with a guide slider (12), and the surface of the guide slider (12) is connected with a first insert (13), and the surface of the first insert (13) is connected with a limiting block (17). The surface of the inner retractable rod (10) is connected with a contraction groove (14), and a telescopic rod (15) is installed inside the contraction groove (14), and the end of the telescopic rod (15) is connected with a second insert (16).

2. A mold with a threaded retracted structure according to claim 1, characterized in that: The retracting rod (10) passes through the interior of the push plate (4), and the push plate (4) and the retracting rod (10) are slidably connected.

3. The mold with a threaded retracted structure according to claim 1, characterized in that: The limiting grooves (9) are provided in three numbers, the first inserts (13) are provided in three numbers, and the surfaces of the three first inserts (13) are provided with a total of three limiting blocks (17), and the limiting blocks (17) correspond one to one with the limiting grooves (9).

4. The mold with a threaded retracted structure according to claim 3, characterized in that: The outer surfaces of the three first inserts (13) and the three second inserts (16) can be spliced ​​to form a complete circle, and the surfaces of the first inserts (13) and the second inserts (16) are provided with a complete thread groove structure.

5. The mold with a threaded retracted structure according to claim 1, characterized in that: The guide slide groove (11) is arranged obliquely on the surface of the retracted rod (10), and three guide slide grooves (11) are arranged, and the three guide slide grooves (11) have the same inclination.

6. The mold with a threaded retracted structure according to claim 1, characterized in that: The guide slide block (12) is slidably connected to the retracted rod (10) via the guide slide groove (11).

7. The mold with a threaded retracted structure according to claim 1, characterized in that: A telescopic structure is formed between the second insert (16) and the telescopic rod (15).

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