Mold structure with small sliding block driving large sliding block to pull core

Abstract

The utility model discloses a mold structure with a small sliding block driving a large sliding block to pull a core, which comprises the small sliding block, the small sliding block comprises an inclined sliding chute which is arranged in an inclined manner, and the lower part of the small sliding block is provided with a step-shaped bulge; the inclined guide post is obliquely arranged in the inclined sliding chute; the small sliding block is arranged in the center of the middle of the large sliding block in a penetrating manner, and the small sliding block can move in the large sliding block; the lower die plate is used for bearing the small sliding block and the large sliding block, the small sliding block and the large sliding block can slide on the lower die plate, the lower die plate further comprises a groove and a limiting assembly, and the limiting assembly is installed in the groove and abuts against the step-shaped protrusion of the small sliding block and the large sliding block. According to the mold structure with the large sliding block driven by the small sliding block to pull the core, the large sliding block is driven by the small sliding block to pull the core, so that the core pulling action can be more accurately controlled, the demolding process is ensured to be smoothly carried out, and the risk of mold clamping or deformation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mould processing technical field, concretely relates to a mould structure of small slider driving big slider core pulling. BACKGROUND

[0002] In the injection molding process of plastic products, the manufacture of complex structure parts often needs to use the mould with core pulling function. The action of core pulling mechanism is to solve the complex structure such as groove, reverse buckle, deep muscle existing in product design, and ensure that the product is smoothly demoulded. The traditional core pulling design usually adopts step-by-step core pulling to realize smooth demoulding, however, with the increasing complexity of plastic product design, the existing core pulling technology has obvious limitations in some cases.

[0003] Generally, there is a reverse buckle structure on the big slider, and direct forced demoulding may cause surface damage or deformation of the product. In order to avoid this situation, small sliders are used to demould the reverse buckle on the big slider first, and then the big slider completes the subsequent core pulling. However, the movement sequence of the small slider and the big slider needs to be accurately controlled in this process, which increases the design complexity and manufacturing cost. UTILITY MODEL CONTENT

[0004] In order to overcome the above shortcomings, the utility model aims at providing a mould structure of small slider driving big slider core pulling, which simplifies the design of the mould structure, drives the big slider to core pulling through the small slider, can more accurately control the core pulling action, ensures the smooth progress in the demoulding process, and reduces the risk of die sticking or deformation.

[0005] Technical scheme: the utility model discloses a mould structure of small slider driving big slider core pulling, which comprises:

[0006] Small slider, the small slider includes an inclined chute arranged obliquely, and the lower part of the small slider has a stepped protrusion;

[0007] Inclined guide pillar, the inclined guide pillar is arranged obliquely in the inclined chute;

[0008] Big slider, the small slider is arranged in the middle center of the big slider, and the small slider can be accommodated to move in the big slider;

[0009] Lower die plate, the lower die plate is used for bearing the small slider and the big slider, the small slider and the big slider can slide on the lower die plate, and the lower die plate further comprises a groove and a limiting assembly, the limiting assembly is installed in the groove, and the limiting assembly is respectively abutted with the stepped protrusion of the small slider and the big slider.

[0010] Further, the surface of the stepped protrusion abutting with the limiting assembly is a first inclined surface, and the inclination direction of the first inclined surface is opposite to the inclination direction of the inclined guide pillar.

[0011] Further, the large slider and the small slider are provided with a movable cavity capable of accommodating horizontal movement of the small slider, the inclined sliding groove is communicated with the movable cavity, the inclined guide column is also arranged in the movable cavity, a first cavity for sliding movement of the small slider is formed between the lower part of the large slider and the stepped protrusion, and the small slider is capable of moving in the first cavity.

[0012] Further, the lower die plate further comprises a second cavity, the movable cavity is capable of being communicated with the second cavity in the direction of the lower die plate, the inclined guide column passes through the movable cavity and enters the second cavity after being inserted into the inclined sliding groove, and the inclined guide column abuts against the lower die plate to form a limiting structure.

[0013] Further, the limiting assembly comprises a spring and a limiting block, the spring connects the limiting block with the bottom surface of the groove, the spring is always in a compressed state, and the highest position of the limiting block does not exceed the upper surface of the lower die plate when the spring reaches the maximum compression degree.

[0014] Further, the limiting block comprises a second inclined surface corresponding to the first inclined surface, protrusions are arranged on both sides of the second inclined surface in the height direction of the limiting block, the first plane is formed by the protrusions away from the vertical surface of the inclined guide column, and the first plane abuts against the large slider.

[0015] Further, the second plane is formed by the plane of the stepped protrusion in the direction of the first cavity, the third plane is formed by the plane of the large slider in the direction of the first cavity, the small slider is capable of sliding towards the first cavity, and the second plane is coincident with the third plane.

[0016] Further, the inclination direction of the movable cavity is consistent with the inclination direction of the inclined guide column, and the width of the first cavity is not greater than the width of the movable cavity.

[0017] The utility model discloses the beneficial effects are:

[0018] (1) the utility model discloses simplify the mould structure, and the small slider drives the large slider to move, and sets up limiting assembly step -by -step core -pulling, realizes the smooth action of core -pulling, makes the small slider can smoothly push the large slider and completes the core -pulling action of action;

[0019] (2) the design of the movable cavity and the first cavity between the large slider and the small slider ensures the sliding space of the small slider in the large slider, avoids the interference between the two, and guarantees the smoothness and stability of the core -pulling process.

[0020] (3) the design of the limiting assembly ensures that the sliding range of the small slider is in the preset path, prevents the small slider from translocation and causes the damage or stripping failure of the mould. BRIEF DESCRIPTION OF DRAWINGS

[0021] The drawings described herein are for purposes of illustration only and are not intended to limit the scope of the present disclosure in any way. Additionally, the shapes and proportions of the various components in the drawings are not intended to be to scale with one another but are merely intended to help provide a general understanding of the present disclosure. Those of ordinary skill in the art will appreciate that the present disclosure can be practiced in a variety of ways in which the shapes and proportions of the various components are different from those depicted in the drawings. In the drawings:

[0022] Figure 1 is a schematic view of the mold structure of the present disclosure;

[0023] Figure 2 is a schematic view of the mold structure of the present disclosure; Figure 1 is a partial enlarged schematic view of the mold structure of the present disclosure;

[0024] Figure 3 is a schematic view of the limiting assembly of the present disclosure.

[0025] In the drawings: 1, small slider; 11, inclined sliding groove; 12, stepped protrusion; 121, first inclined surface; 122, second flat surface; 2, inclined guide pillar; 3, large slider; 31, movable cavity; 32, first cavity; 33, third flat surface; 4, lower mold plate; 41, groove; 42, limiting assembly; 421, spring; 422, limiting block; 423, second inclined surface; 424, first flat surface; 43, second cavity. DETAILED DESCRIPTION

[0026] The present disclosure will be further clarified by the following description of specific embodiments, taken in conjunction with the accompanying drawings.

[0027] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present disclosure. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances. The embodiments will be described below according to the overall structure of the present disclosure.

[0028] The core-drawing distribution of the mold structure in the prior art has the following defects:

[0029] The reverse buckle is arranged on the big slider, so the reverse buckle on the big slider must be demolded by using the small slider, and then the big slider can move smoothly.

[0030] As shown in Figures 1 to 3 The utility model discloses a mould structure of small slider driving big slider core-pulling, which comprises:

[0031] The small slider 1 comprises an obliquely arranged inclined sliding groove 11, and the lower part of the small slider 1 has a stepped protrusion 12.

[0032] The inclined guide pillar 2 is obliquely arranged in the inclined sliding groove 11.

[0033] The big slider 3 is arranged in the middle center of the big slider 3, and the big slider 3 can accommodate the movement of the small slider 1 in the big slider 3.

[0034] The lower die plate 4 is used for bearing the small slider 1 and the big slider 3, the small slider 1 and the big slider 3 can slide on the lower die plate 4, and the lower die plate 4 further comprises a groove 41 and a limiting assembly 42, the limiting assembly 42 is installed in the groove 41, and the limiting assembly 42 is in abutment with the stepped protrusion 12 of the small slider 1 and the big slider 3 respectively.

[0035] Through the above structure, the small slider 1 is arranged in the middle center of the big slider 3, the inclined guide pillar 2 passes through the inclined sliding groove 11 of the small slider 1 in sequence and then enters the movable cavity 31 of the big slider 3, so as to limit the positions of the small slider 1 and the big slider 3. Meanwhile, the limiting assembly 42 on the lower die plate 4 is in abutment with the small slider 1 and the big slider 3 at the same time, so as to prevent the movement of the small slider 1 and the big slider 3. When the core-pulling starts, the inclined guide pillar 2 moves upwards, under the action of the inclined sliding groove 11, the small slider 1 moves in the movable cavity 31 of the big slider 3, and under the action of the inclined guide pillar 2, the small slider 1 moves horizontally towards the direction of the first cavity 32, gradually unlocking the limitation of the limiting assembly 42, until the first cavity 32 between the stepped protrusion 12 of the small slider 1 and the big slider 3 is completely compressed, at this time, the stepped protrusion 12 of the small slider 1 is in close contact with the big slider 3, and the limiting effect of the limiting assembly 42 completely disappears, at this time, the first step core-pulling of the mould is completed. The inclined guide pillar 2 continues to move upwards, the small slider 1 pushes the big slider 3 to continue to translate along the previous direction under the action of the inclined guide pillar 2, until the big slider 3 completes the core-pulling.

[0036] Specifically, the lower die plate 4 is provided with a groove 41 at one end close to the step-shaped protrusion 12, and a limiting component 42 is installed in the groove 41, and the limiting component 42 abuts against the step-shaped protrusion 12 to prevent the small slider 1 from moving. Specifically, the abutting position of the limiting component 42 against the step-shaped protrusion 12 is a slope, the slope of the step-shaped protrusion 12 is a first slope 121, and the slope of the limiting component 42 is a second slope 423, and the inclination direction of the first slope 121 is opposite to the inclination direction of the inclined guide column 2, so that under the double limitation of the inclined guide column 2 and the limiting component 42, it is ensured that the small slider 1 will not move easily.

[0037] In the embodiment, the vertical surface of the step-shaped protrusion 12 towards the first cavity 32 is a second plane 122, and correspondingly, the vertical surface of the large slider 3 towards the first cavity 32 is a third plane 33, and the second plane 122 and the third plane 33 are oppositely arranged, when the small slider 1 moves towards the first cavity 32, the small slider 1 compresses the first cavity 32 until the second plane 122 and the third plane 33 completely fit. Under the action of the inclined guide column 2, the small slider 1 drives the large slider 3 to slide together to complete the core pulling.

[0038] In the embodiment, the lower die plate 4 is further provided with a second cavity 43, the second cavity 43 is communicated with the movable cavity 31 of the large slider 3, the end of the inclined guide column 2 can pass through the inclined sliding groove 11 and the movable cavity 31 in sequence, the end is inserted into the second cavity 43, and a limiting is formed to prevent the lower slider from sliding accidentally during the injection molding process, thereby preventing the mold from being damaged.

[0039] In the embodiment, the limiting component 42 includes a spring 421 and a limiting block 422, one end of the spring 421 is connected to the bottom surface of the groove 41, and the other end is connected to the limiting block 422, wherein the spring 421 is always in a compressed state, when the spring 421 is compressed, the spring 421 provides an upward elastic force for the limiting block 422, so that the slope of the limiting block 422, i.e. the second slope 423, abuts against the first slope 121 of the step-shaped protrusion 12 to prevent the small slider 1 from sliding; when the inclined guide column 2 moves upward, the small slider 1 is simultaneously moved leftward, at this time, the first slope 121 of the step-shaped protrusion 12 presses the limiting block 422, the limiting block 422 is pressed into the groove 41, and the limitation of the limiting block 422 to the small slider 1 is released. When the spring 421 reaches the maximum compression limit, the limiting block 422 can completely enter the groove 41 of the lower die plate 4, and the highest point of the limiting block 422 does not exceed the upper surface of the lower die plate 4.

[0040] More preferably, the second inclined surface 423 of the limiting block 422 has protrusions extending along the height direction of the limiting block 422 on both sides, the protrusions and the limiting block 422 form a vertical plane, the vertical plane of the limiting block 422 away from the first cavity 32 is a first plane 424, when the second inclined surface 423 abuts against the first inclined surface 121, the first plane 424 abuts against the large slider 3, the limiting block 422 can limit the movement of the large slider 3 while limiting the small slider 1. When the inclined guide pillar 2 moves upward, the small slider 1 slides towards the direction of the first cavity 32, under the action of the first inclined surface 121 and the second inclined surface 423, the limiting block 422 is pressed into the groove 41, when the first inclined surface 121 releases the limitation of the small slider 1, the limitation of the large slider 3 is also released, which facilitates the subsequent small slider 1 to drive the large slider 3 to core out.

[0041] Further, the width of the first cavity 32 is not greater than the width of the movable cavity 31, because the inclined guide pillar 2 is inclinedly placed, the inclination direction of the movable cavity 31 is the same as the inclination direction of the inclined guide pillar 2, the inclined guide pillar 2 moves upward and gradually approaches the inner wall of the movable cavity 31, when the first cavity 32 is completely compressed, the inclined guide pillar 2 is tightly attached to the inner wall of the movable cavity 31, at this time, the second plane 122 of the small slider 1 is tightly attached to the third plane 33 of the large slider 3, the small slider 1 drives the large slider 3 to core out, and the inclined guide pillar 2 also drives the small slider 1 and the large slider 3 to slide together.

[0042] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the utility model, and the technical schemes after the changes or replacements will all fall within the protection scope of the utility model.

Claims

1. A mold structure for core pulling by a small slider driving a large slider, characterized by, The utility model provides a slide block device, which comprises a small slide block, an inclined slide groove arranged on the small slide block, a stepped protrusion on the lower part of the small slide block, an inclined guide pillar arranged in the inclined slide groove, a large slide block, the small slide block being arranged in the middle of the large slide block and being capable of moving in the large slide block, a lower die plate for bearing the small slide block and the large slide block, the small slide block and the large slide block being capable of sliding on the lower die plate, a groove and a limiting assembly being arranged in the lower die plate, the limiting assembly being arranged in the groove and being capable of abutting against the stepped protrusion of the small slide block and the large slide block respectively. The surface of the stepped protrusion abutting against the limiting assembly is a first inclined surface, and the inclination direction of the first inclined surface is opposite to the inclination direction of the inclined guide pillar. An active cavity capable of accommodating the horizontal movement of the small slide block is arranged between the large slide block and the small slide block, the inclined slide groove is communicated with the active cavity, the inclined guide pillar is arranged in the active cavity, a first cavity for the sliding movement of the small slide block is arranged between the lower part of the large slide block and the stepped protrusion, and the small slide block is capable of moving in the first cavity. The lower die plate further comprises a second cavity, the active cavity is capable of being communicated with the second cavity in the direction of the lower die plate, the inclined guide pillar is inserted into the inclined slide groove, passes through the active cavity and enters the second cavity, and the inclined guide pillar abuts against the lower die plate to form a limiting structure. The limiting assembly comprises a spring and a limiting block, the spring connects the limiting block with the bottom surface of the groove, the spring is always in a compressed state, and the highest position of the limiting block does not exceed the upper surface of the lower die plate when the spring reaches the maximum compression degree.

2. The mold structure of claim 1, wherein, The limiting block comprises a second inclined surface corresponding to the first inclined surface, protrusions are arranged on both sides of the second inclined surface in the height direction of the limiting block, the vertical surface of the protrusions away from the inclined guide pillar is a first flat surface, and the first flat surface abuts against the large slide block.

3. The mold structure of a small slider driving a large slider core pulling according to claim 1, wherein, The flat surface of the stepped protrusion in the direction of the first cavity is a second flat surface, the flat surface of the large slide block in the direction of the first cavity is a third flat surface, the small slide block is capable of sliding in the direction of the first cavity, and the second flat surface coincides with the third flat surface.

4. The mold structure of claim 3, wherein The width of the first cavity is not greater than the width of the active cavity.

5. The mold structure of claim 2, wherein ​ 6. The mold structure of claim 5, wherein ​ 7. The mold structure of a small slider driving a large slider core pulling according to claim 3, wherein, ​ 8. The mold structure of a small slider driving a large slider core pulling according to claim 3, wherein, ​

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