CN213919417U - Injection mold structure of detaining in full week - Google Patents

Abstract

The utility model provides an injection mold structure with a full-circumference inner buckle, which comprises a front template and a rear template, wherein one side of the front template is fixed with a convex module, one side of the front template is provided with a guide groove, and the side wall of the guide groove is a first inclined plane; the rear template is connected with a sliding block in a sliding mode, an outer die cavity which is concave in an arc shape is formed in one side of the sliding block, a guide block is fixed to the top of the sliding block, and a second inclined plane is formed in one side of the guide block; the rear template is internally provided with a first inclined ejector component and a second inclined ejector component, the first inclined ejector component comprises a first inclined ejector rod and a first inner mold core, the second inclined ejector component comprises a second inclined ejector rod and a second inner mold core, the first inclined ejector rod is far away from the center of the convex module and inclines by an angle alpha, the second inclined ejector rod is far away from the center of the convex module and inclines by an angle beta, and alpha is larger than beta. The utility model discloses when the die sinking takes off the material, the slider can be broken away from the plastic product by indirect drive, and pushes up the subassembly to one side and can effectively contract in and break away from the plastic product, takes off the material action and does not receive the elastic limitation of plastic material, and the range of application is wide.

Description

Injection mold structure of detaining in full week

Technical Field

The utility model relates to an injection mold specifically discloses an injection mold structure of detaining in full week.

Background

The injection mold is also called plastic mold, and is a short name for a combined mold for compression molding, extrusion molding, injection, blow molding and low-foaming molding, and the injection mold is called an industrial master mold and has a wide application range.

The injection mold mainly comprises a front template and a rear template, wherein a male mold block and a female mold cavity for forming an injection mold cavity are respectively arranged in the front template and the rear template. In the prior art, when a product which needs to be buckled and bent in the whole peripheral edge is subjected to injection molding production, after injection molding, due to the fact that the internal buckling relation is formed between a plastic product and a mold, only a plastic material with good elasticity can be forced to fall off, and the plastic product with the internal buckling and bending cannot be manufactured by the plastic material with poor elasticity.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an injection mold structure for a full-periphery inner buckle, which can process and obtain a plastic product of the full-periphery inner buckle, and has stable and reliable material releasing action, and the material releasing is not limited by the elasticity of the plastic material.

In order to solve the prior art problem, the utility model discloses an injection mold structure of all-round internal buckle, which comprises a front template and a rear template, wherein a convex module is fixed at one side of the front template close to the rear template, a concave edge is arranged at the periphery of one side of the convex module close to the rear template, four guide grooves are arranged at one side of the front template close to the rear template, the four guide grooves are positioned outside the periphery of the convex module, the side wall of the guide groove far away from the convex module is a first inclined plane, and four first inclined top holes and four second inclined top holes are arranged in the rear template;

the rear template is connected with four sliding blocks in a sliding manner, one side of each sliding block, which is close to the convex module, is provided with an outer mold cavity which is concave in an arc shape, the top of each sliding block is fixedly provided with a guide block which can be inserted into the guide groove, one side of each guide block, which is far away from the convex module, is provided with a second inclined plane, and the second inclined plane is parallel to the first inclined plane;

four first oblique jacking components and four second oblique jacking components are arranged in the rear template, each first oblique jacking component comprises a first oblique jacking rod and a first inner die core, each first inner die core is fixed at the top of each first oblique jacking rod, each first inner die core surrounds a rectangular frame die core, each second oblique jacking component comprises a second oblique jacking rod and a second inner die core, each second inner die core is fixed at the top of each second oblique jacking rod, each four second inner die cores are located at four corners of each rectangular frame die core, each first oblique jacking rod inclines an alpha angle from top to bottom away from the convex module, each second oblique jacking rod inclines a beta angle from top to bottom away from the convex module, alpha is larger than beta, each first oblique jacking rod is connected in each first oblique jacking hole in a sliding mode, and each second oblique jacking rod is connected in each second oblique jacking hole in a sliding mode.

Furthermore, a first boss plate located right below the boss module is fixed on the rear template, the first inclined top hole and the second inclined top hole penetrate through the top of the first boss plate, second boss plates are fixed at four corners of the rear template, and the sliding block is connected between every two adjacent second boss plates in a sliding mode.

Furthermore, a positioning lug is fixed at the top of the first boss plate, and the thickness of the positioning lug is equal to that of the first inner die core and that of the second inner die core.

Furthermore, one side of the front template, which is close to the rear template, is provided with four limiting grooves, the bottom of the second boss plate is fixed with limiting columns, and the limiting columns can be slidably connected in the limiting grooves.

Further, α is 8 ° and β is 5 °.

Furthermore, both ends of the first inner mold core are triangular, both side edges of the triangle at the tail end of the first inner mold core are first yielding inclined planes, and one side of the second inner mold core close to the center of the convex mold block is a second yielding inclined plane.

The utility model has the advantages that: the utility model discloses an injection mold structure of detaining in whole week is provided with special oblique top subassembly and slider structure, can obtain the plastic product of detaining in the whole week after injection moulding, when carrying out the die sinking and take off the material, the slider can be broken away from the plastic product by indirect drive, and pushes up the subassembly to one side and can effectively contract in and break away from the plastic product, take off the material action reliable and stable, take off the material action and do not receive the elastic limitation of plastic material, the range of application is wide, and overall structure is succinct uncomplicated, can effectively reduce the mould cost.

Drawings

Fig. 1 is a schematic view of the three-dimensional structure of the mold closing device of the present invention.

Fig. 2 is a schematic view of the three-dimensional structure of the utility model when opening the mold.

Fig. 3 is a schematic view of the three-dimensional structure of another view angle in the mold opening process of the present invention.

Fig. 4 is a schematic view of the three-dimensional structure of the present invention during material removal.

Fig. 5 is a schematic view of the three-dimensional structure of the rear mold plate and the two lifter assemblies during material removal of the present invention.

Fig. 6 is a schematic top view of the present invention.

Fig. 7 is a schematic sectional view along a-a' in fig. 6 when the mold is closed.

Fig. 8 is a schematic view of the cross-sectional structure of the utility model taken along a-a' in fig. 6 during material removal.

The reference signs are: the mold comprises a front mold plate 10, a male mold block 11, a concave edge 111, a guide groove 12, a first inclined surface 121, a limiting groove 13, a rear mold plate 20, a first inclined top hole 211, a second inclined top hole 212, a first male mold plate 22, a positioning bump 221, a second male mold plate 23, a limiting column 231, a slide block 30, an outer mold cavity 31, a guide block 32, a second inclined surface 321, a first inclined top assembly 40, a first inclined top rod 41, a first inner mold core 42, a first abdicating inclined surface 421, a second inclined top assembly 50, a second inclined top rod 51, a second inner mold core 52, a second abdicating inclined surface 521 and a plastic product 60.

Detailed Description

For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.

Refer to fig. 1 to 8.

The embodiment of the utility model discloses an injection mold structure of detaining in full week, including front template 10 and back template 20, one side that front template 10 is close to back template 20 is fixed with convex mould 11, convex mould 11 is close to back template 20 and is equipped with concave edge 111 all around, one side that front template 10 is close to back template 20 is equipped with four guide ways 12, four guide ways 12 are located outside the periphery of convex mould 11, the lateral wall that every guide way 12 is far away from convex mould 11 is first inclined plane 121, first inclined plane 121 keeps away from convex mould 11 slope from the tank bottom to the notch, be equipped with four first oblique apical pore 211 and four second oblique apical pore 212 in the back template 20;

the rear template 20 is slidably connected with four sliding blocks 30, each sliding block 30 is respectively positioned under each guide groove 12, one side of each sliding block 30, which is close to the male die block 11, is provided with an outer die cavity 31 which is in an arc-shaped recess, the four outer die cavities 31 can be spliced to form a continuous female die cavity structure, the outer die cavity 31 in the arc-shaped recess can ensure that the sliding block 30 can be horizontally pushed away in the ejection process, the top of each sliding block 30 is fixedly provided with a guide block 32 which can be inserted into the guide groove 12, one side of each guide block 32, which is far away from the male die block 11, is provided with a second inclined surface 321, the second inclined surface 321 is parallel to the first inclined surface 121, and the first inclined surface 121 can be in close contact with the second inclined surface 321 for steering longitudinal force, so that the sliding block 30 can be translated during die assembly;

four first lifter assemblies 40 and four second lifter assemblies 50 are arranged in the rear mold plate 20, the first lifter assembly 40 includes a first lifter 41 and a first inner mold core 42, the first inner mold core 42 is fixed on the top of the first lifter 41, the four first inner mold cores 42 surround a rectangular frame mold core, each first inner mold core 42 is respectively located on one side of each slide block 30 close to the convex mold block 11, the second lifter assembly 50 includes a second lifter 51 and a second inner mold core 52, the second inner mold core 52 is fixed on the top of the second lifter 51, the four second inner mold cores 52 are located on four corners of the rectangular frame mold core and are matched to form an inner mold block, an injection molding cavity is formed between the outer mold cavity 31, the concave edge 111, the convex mold block 11 and the inner mold block, the first lifter 41 is inclined from top to bottom by an angle alpha, the angle is an included angle between the first lifter 41 and a normal of the mold, the mold is a virtual line perpendicular to the bottom surface of the convex mold block 11, the second oblique ejector rod 51 is far away from the center of the convex module 11 from top to bottom, the beta angle is an included angle between the second oblique ejector rod 51 and a normal line of the mold, an oblique ejector hole structure for respectively moving the first oblique ejector rod 41 and the second oblique ejector rod 51 is arranged in the rear mold plate 20, beta < alpha <30 >, in the ejection process, when the first oblique ejector rod 41 and the second oblique ejector rod 51 rise to the same height, the retraction translation distance of the first inner mold core 42 is larger than that of the second inner mold core 52, so that the length and width of the whole inner module can be effectively reduced, the effect of retraction and material removal is realized, the first oblique ejector rods 41 are slidably connected in the first oblique ejector holes 211, the second oblique ejector rods 51 are slidably connected in the second oblique ejector holes 212, the alpha angle and the beta angle are not too large, and the clamping during ejection and material removal can be avoided.

When the mold is closed, as shown in fig. 1 and 7, the front mold plate 10 moves close to the rear mold plate 20, the first inclined surface 121 contacts the second inclined surface 321, the guide block 32 moves close to the male mold block 11 continuously in the process that the front mold plate 10 and the rear mold plate 20 are close to each other, when the surfaces of the front mold plate 10 and the rear mold plate 20 are in close contact, the guide block 32 is completely accommodated in the guide groove 12, each outer mold cavity 31 surrounds to form a female mold cavity, each first oblique top assembly 40 and each second oblique top assembly 50 are located at the lowest end of the movable track, namely the top end of the oblique ejector rod is completely accommodated in the oblique ejector hole, the inner mold core covers the top of the oblique ejector hole, each first inner mold core 42 and each second inner mold core 52 form an outer wall coherent inner mold cavity, the top of the female mold cavity 111 is connected with the male mold block 11 and the inner mold core to form an injection mold cavity, obtaining a plastic product 60 after injection molding, wherein the inner module is buckled on the inner wall of the plastic product 60; when the mold is opened, as shown in fig. 2 and 3, the front mold plate 10 moves away from the rear mold plate 20, the male mold plate 11 is separated from the rear mold plate 20, and the guide groove 12 is separated from the guide block 32; when the material is ejected and removed, as shown in fig. 4, 5 and 8, the external structure drives each inclined ejection component to ascend synchronously through the ejector plate, the plastic product 60 ascends synchronously along with the outer mold cavity 31, the outer mold cavity 31 has a guiding function for the arc-shaped concave structure, and each slide block 30 is ejected outwards and away from the periphery in the ascending process of the plastic product 60, so that the plastic product 60 is separated from the outer mold cavity 31, and as each inclined ejection component ascends obliquely, the distance between each first inner mold core 42 and each second inner mold core 52 is continuously reduced, so that each inner mold core contracts inwards to realize the separation action with the plastic product 60.

In this embodiment, the rear mold plate 20 is fixed with the first boss plate 22 located right below the boss module 11, each first inclined top hole 211 and each second inclined top hole 212 all penetrate through the top of the first boss plate 22, the height of the lowest position where the inner mold core can be located can be effectively improved by setting the first boss plate 22, a sufficient design space is provided for the design of the injection molding cavity with a full surrounding effect, the second boss plate 23 is fixed at all four corners of the rear mold plate 20, each slider 30 is respectively connected between each two adjacent second boss plates 23 in a sliding manner, the position of the slider 30 can be effectively limited through the first boss plate 22 and the second boss plate 23, and the stability of the work of the mold structure is improved. Preferably, a dovetail-shaped sliding groove is formed between two adjacent second boss plates 23, and the sliding block 30 is slidably connected in the dovetail-shaped sliding groove, so that the height position of the sliding block 30 can be limited without matching with other external structures.

Based on the above embodiments, the top of the first raised plate 22 is fixed with the positioning protrusion 221, the thickness of the positioning protrusion 221 and the first inner mold core 42 is equal to the thickness of the second inner mold core 52, and when the mold is closed, the positioning protrusion 221 is tightly attached to the inside of the inner mold block, so as to effectively position each of the first inner mold core 42 and the second inner mold core 52, and improve the stability of the injection mold cavity in the injection mold during injection molding.

In this embodiment, four limiting grooves 13 are formed in one side of the front mold plate 10 close to the rear mold plate 20, a limiting post 231 is fixed at the bottom of each second boss plate 23, the limiting posts 231 are slidably connected in the limiting grooves 13, and the reliability of mold opening and closing actions can be effectively improved by matching the limiting posts 231 with the limiting grooves 13.

In the present embodiment, α is 8 ° and β is 5 °, the plastic product 60 can be pushed out of the outer cavity 31, and then the plastic product 60 and the inner mold block can be separated from each other, so that continuity and reliability of the knockout operation can be ensured.

In this embodiment, both ends of the projection of the first inner mold core 42 on the horizontal plane are triangles, both sides of the triangle at the end of the first inner mold core 42 are first abdicating slopes 421, and one side of the second inner mold core 52 close to the center of the convex mold block 11 is a second abdicating slope 521, as shown in fig. 4 and 5, the first abdicating slope 421 and the second abdicating slope 521 can provide a good abdicating space for the retraction and stripping, thereby effectively ensuring that the abdicating action can be performed smoothly.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (6)

1. An injection mold structure with a full-periphery inner buckle comprises a front mold plate (10) and a rear mold plate (20), and is characterized in that a convex module (11) is fixed on one side, close to the rear mold plate (20), of the front mold plate (10), a concave edge (111) is arranged on the periphery of one side, close to the rear mold plate (20), of the convex module (11), four guide grooves (12) are formed in one side, close to the rear mold plate (20), of the front mold plate (10), the four guide grooves (12) are located outside the periphery of the convex module (11), the side wall, far away from the convex module (11), of each guide groove (12) is a first inclined surface (121), and four first inclined top holes (211) and four second inclined top holes (212) are formed in the rear mold plate (20);

the rear template (20) is connected with four sliding blocks (30) in a sliding manner, one side, close to the convex module (11), of each sliding block (30) is provided with an outer mold cavity (31) which is concave in an arc shape, the top of each sliding block (30) is fixedly provided with a guide block (32) which can be inserted into the corresponding guide groove (12), one side, far away from the convex module (11), of each guide block (32) is provided with a second inclined surface (321), and each second inclined surface (321) is parallel to the corresponding first inclined surface (121);

the rear template (20) is internally provided with four first inclined ejector components (40) and four second inclined ejector components (50), each first inclined ejector component (40) comprises a first inclined ejector rod (41) and a first inner mold core (42), each first inner mold core (42) is fixed to the top of the corresponding first inclined ejector rod (41), the four first inner mold cores (42) surround to form a rectangular frame mold core, each second inclined ejector component (50) comprises a second inclined ejector rod (51) and a second inner mold core (52), each second inner mold core (52) is fixed to the top of the corresponding second inclined ejector rod (51), the four second inner mold cores (52) are located at four corners of the rectangular frame mold core, each first inclined ejector rod (41) is inclined at an alpha angle from top to bottom away from the center of the corresponding convex module (11), each second inclined ejector rod (51) is inclined at a beta angle from top to bottom away from the center of the corresponding convex module (11), a > beta, the first oblique mandril (41) is slidably connected in the first oblique mandril hole (211), and the second oblique mandril (51) is slidably connected in the second oblique mandril hole (212).

2. A full-periphery internal-buckling injection mold structure as claimed in claim 1, wherein a first boss plate (22) located right below the boss module (11) is fixed on the rear mold plate (20), the first inclined top hole (211) and the second inclined top hole (212) both penetrate through the top of the first boss plate (22), second boss plates (23) are fixed on four corners of the rear mold plate (20), and the sliding block (30) is slidably connected between two adjacent second boss plates (23).

3. The injection mold structure of a full periphery inner snap ring as claimed in claim 2, wherein a positioning protrusion (221) is fixed on the top of the first boss plate (22), and the thickness of the positioning protrusion (221) is equal to the thickness of the first inner mold core (42) and the second inner mold core (52).

4. A full periphery internal buckling injection mold structure as claimed in claim 2, wherein said front mold plate (10) is provided with four limiting grooves (13) at a side close to said rear mold plate (20), a limiting column (231) is fixed at the bottom of said second boss plate (23), and said limiting column (231) is slidably connected in said limiting groove (13).

5. An injection mold structure for a full-periphery inside buckle according to claim 1, wherein α -8 ° and β -5 °.

6. The injection mold structure of a full periphery inner snap ring as claimed in claim 1, wherein both ends of the first inner mold core (42) are triangular, both sides of the triangle at the end of the first inner mold core (42) are first receding inclined planes (421), and one side of the second inner mold core (52) close to the center of the male mold block (11) is a second receding inclined plane (521).

Images