Injection mold with sliding block mechanism

Abstract

The injection mold comprises a bottom plate, a rear mold plate, a front mold plate, a hot runner plate and a top plate which are sequentially arranged from top to bottom, the sliding block mechanism is arranged between the rear mold plate and the front mold plate and comprises two sliding blocks which are symmetrically arranged, the sliding blocks are connected to the top face of the rear mold plate in a sliding mode, and the sliding blocks are arranged on the top face of the rear mold plate. A slide clamp is arranged between the sliding block and the rear mold plate, a clamping groove is formed in the inner wall of the sliding block, two inclined guide holes are formed in the sliding block, inclined guide columns are inserted into the inclined guide holes, the diameter of the inclined guide holes is larger than that of the inclined guide columns, and the tops of the inclined guide columns are fixed to the front mold plate; the bottom of the inclined guide column penetrates through the inclined guide hole and then is arranged in a containing groove formed in the outer wall of the rear mold plate, and an auxiliary rolling assembly is arranged in the inclined guide hole. According to the utility model, the demoulding effect is achieved by pulling a product in a delayed core-pulling manner through the sliding block, so that a mould ejection structure is omitted, the mould structure is simplified, the manufacturing cost is reduced, and the production efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold equipment technology, and in particular to an injection mold with a slider mechanism. Background Technology

[0002] Injection molds are tools used to produce plastic products, giving them a complete structure and precise dimensions. Injection molding is a processing method used for mass production of certain complex-shaped parts. Specifically, it refers to injecting molten plastic into a mold cavity under high pressure using an injection molding machine, and then cooling and solidifying it to obtain the molded product. Injection molds are classified into two types according to their molding characteristics: thermosetting plastic molds and automotive molds, and thermoplastic plastic molds. According to their molding process, they are classified into transfer molds, blow molds, casting molds, thermoforming molds, hot press molds (compression molds), and injection molds. Among them, hot press molds can be further divided into three types based on the overflow method: overflow type, semi-overflow type, and non-overflow type. Injection molds can be divided into two types based on the gating system: cold runner molds and hot runner molds. According to the loading and unloading method, they can be divided into two types: movable type and fixed type.

[0003] In many cases, plastic products are designed with mutually perpendicular side recesses. In such cases, when designing the injection mold, if the side of the plastic product has both horizontal and vertical core-pulling and demolding needs, a special vertical synchronous core-pulling mechanism must be designed on the side horizontal core-pulling slider to complete the complete core-pulling and demolding of the product side. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold with a slider mechanism to solve the above-mentioned problems.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] This utility model discloses an injection mold with a slider mechanism, comprising a base plate, a rear template, a front template, a hot runner plate, and a top plate arranged sequentially from top to bottom. The slider mechanism is characterized by: a slider mechanism between the rear template and the front template, the slider mechanism comprising two symmetrically arranged sliders slidably connected to the top surface of the rear template, and a sliding clamp between the slider and the rear template; a slot on the inner wall of the slider; two inclined guide holes on the slider; an inclined guide post inserted into the inclined guide hole; the diameter of the inclined guide hole being larger than the diameter of the inclined guide post; the top of the inclined guide post being fixed to the front template; and the bottom of the inclined guide post penetrating the inclined guide hole and placed in a placement groove on the outer wall of the rear template; and an auxiliary rolling component being provided within the inclined guide hole.

[0007] Furthermore, a locking piece is provided on the outer side between the rear template and the front template.

[0008] Furthermore, a positioning ring is provided on the top of the top plate.

[0009] Furthermore, the tops of all four oblique guide holes are inclined inwards.

[0010] Furthermore, the auxiliary rolling assembly includes several rollers and a mounting bracket connected to the rollers. The mounting bracket is connected to the buffer plate. The rollers, mounting bracket, and buffer plate are all placed in a mounting groove opened in the inclined guide hole. One end of the roller protrudes from the mounting groove and is placed in the inclined guide hole. Two grooves are opened at the bottom of the mounting groove. A T-shaped rod is inserted into the groove. One end of the T-shaped rod is connected to the buffer plate, and the other end of the T-shaped rod is connected to the bottom of the groove through a spring.

[0011] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0012] This invention achieves demolding by using a slider to delay core pulling and hold the product in place, thus eliminating the need for a mold ejection structure, simplifying the mold structure, reducing manufacturing costs, and greatly improving production efficiency. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 This is a sectional view of the injection mold with a slider mechanism of this utility model before mold opening;

[0015] Figure 2 This is a cross-sectional view of the first section of the injection mold with a slider mechanism according to this utility model when the mold is opened;

[0016] Figure 3 This is a diagram showing the second stage of the injection mold with a slider mechanism of this utility model when it is open.

[0017] Figure 4 This is a cross-sectional view of the third section of the injection mold with a slider mechanism according to this utility model when the mold is opened;

[0018] Figure 5 A schematic diagram of the slider mechanism installation;

[0019] Figure 6 A sectional view of the auxiliary scrolling component installation;

[0020] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Rear template; 3. Front template; 4. Hot runner plate; 5. Top plate; 6. Slider; 7. Sliding clamp; 8. Angled guide hole; 9. Angled guide post; 10. Placement slot; 11. Roller; 12. Mounting bracket; 13. Buffer plate; 14. Mounting slot; 15. Groove; 16. T-shaped rod; 17. Spring; 18. Slot. Detailed Implementation

[0021] like Figure 1-6 As shown, an injection mold with a slider mechanism includes a base plate 1, a rear template 2, a front template 3, a hot runner plate 4, and a top plate 5 arranged sequentially from top to bottom. The base plate 1, the rear template 2, the front template 3, the hot runner plate 4, and the top plate 5 are all existing technologies, and their specific structures will not be described in detail here. A locking plate is provided on the outer side between the rear template 2 and the front template 3, and a positioning ring is provided on the top of the top plate 5.

[0022] A slider mechanism is provided between the rear template 2 and the front template 3. The slider mechanism includes two symmetrically arranged sliders 6. The sliders 6 are slidably connected to the top surface of the rear template 2, and a sliding clamp 7 is provided between the sliders 6 and the rear template 2. A slot 18 is provided on the inner wall of the slider 6, which can hold the injection molded product.

[0023] The slider 6 has two inclined guide holes 8, the tops of which are all inclined inward. An inclined guide post 9 is inserted into the inclined guide hole 8. The diameter of the inclined guide hole 8 is larger than the diameter of the inclined guide post 9. The top of the inclined guide post 9 is fixed on the front template 3. The bottom of the inclined guide post 9 passes through the inclined guide hole 8 and is placed in a placement groove 10 on the outer wall of the rear template 2.

[0024] An auxiliary rolling assembly is provided within the inclined guide hole 8. This assembly includes several rollers 11 and mounting brackets 12 connected to the rollers 11. The mounting brackets 12 are connected to the buffer plate 13. The rollers 11, mounting brackets 12, and buffer plate 13 are all placed within a mounting groove 14 formed in the inclined guide hole 8. One end of each roller 11 protrudes from the mounting groove 14 and is positioned within the inclined guide hole 8. Two recesses 15 are formed at the bottom of the mounting groove 14, and a T-shaped rod 16 is inserted into each recess 15. One end of the T-shaped rod 16 is connected to the buffer plate 13, and the other end is connected to the bottom of the recess 15 via a spring 17. The rollers 11 allow the inclined guide post 9 to slide quickly within the inclined guide hole 8, effectively reducing friction between the inclined guide post 9 and the inclined guide hole 8.

[0025] The operation process of this utility model is as follows:

[0026] Before mold opening, there is a clearance between the inclined guide post 9 and the inclined guide hole 8. During mold opening, the first stage of mold opening is 0-15mm. Since there is a clearance between the inclined guide post 9 and the inclined guide hole 8, the inclined guide post 9 cannot drive the slider 6 to move, and the slider 6 remains stationary. The second stage of mold opening is 15-59mm. During this stage, the inclined guide post 9 drives the slider 6 to move backward and disengage the undercut. The third stage of mold opening is 59-200mm. After this stage is completed, the robot removes the part, then the mold is closed and injection is performed, and the process is repeated.

[0027] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. An injection mold with a slider mechanism, comprising a base plate (1), a rear mold plate (2), a front mold plate (3), a hot runner plate (4), and a top plate (5) arranged sequentially from top to bottom, characterized in that: A slider mechanism is provided between the rear template (2) and the front template (3). The slider mechanism includes two symmetrically arranged sliders (6). The sliders (6) are slidably connected to the top surface of the rear template (2). A sliding clamp (7) is provided between the sliders (6) and the rear template (2). A slot (18) is provided on the inner wall of the sliders (6). Two inclined guide holes (8) are provided on the sliders (6). An inclined guide post (9) is inserted into the inclined guide hole (8). The diameter of the inclined guide hole (8) is larger than the diameter of the inclined guide post (9). The top of the inclined guide post (9) is fixed on the front template (3). The bottom of the inclined guide post (9) passes through the inclined guide hole (8) and is placed in a placement groove (10) on the outer wall of the rear template (2). An auxiliary rolling component is provided in the inclined guide hole (8).

2. The injection mold with a slider mechanism according to claim 1, characterized in that: A locking piece is provided on the outer side between the rear template (2) and the front template (3).

3. The injection mold with a slider mechanism according to claim 1, characterized in that: The top of the top plate (5) is provided with a positioning ring.

4. The injection mold with a slider mechanism according to claim 1, characterized in that: The tops of the four oblique guide holes (8) are all inclined inward.

5. The injection mold with a slider mechanism according to claim 1, characterized in that: The auxiliary rolling assembly includes several rollers (11) and a mounting bracket (12) connected to the rollers (11). The mounting bracket (12) is connected to the buffer plate (13). The rollers (11), the mounting bracket (12) and the buffer plate (13) are all placed in the mounting groove (14) opened in the inclined guide hole (8). One end of the roller (11) protrudes from the mounting groove (14) and is placed in the inclined guide hole (8). Two grooves (15) are opened at the bottom of the mounting groove (14). A T-shaped rod (16) is inserted into the groove (15). One end of the T-shaped rod (16) is connected to the buffer plate (13), and the other end of the T-shaped rod (16) is connected to the bottom of the groove (15) by a spring (17).

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