CN215703608U

CN215703608U - Car light face guard forming die

Info

Publication number: CN215703608U
Application number: CN202121251747.6U
Authority: CN
Inventors: 龚继雄; 马天龙; 江文祥; 江志伟
Original assignee: Changzhou Keshang Molding Co ltd
Current assignee: Changzhou Keshang Molding Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2022-02-01
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses a car lamp mask forming die which comprises a bottom die assembly and an upper die assembly, wherein the upper surface of the bottom die assembly is provided with a plurality of guide rods and a die-shaped area, and the upper die assembly is driven by a lifting device to move up and down along the guide rods; the bottom die assembly comprises a pushing device, the pushing device drives a pushing plate to vertically move, a plurality of ejector rod columns are arranged at the top of the pushing plate, an ejector rod is arranged at the top of each ejector rod column, and the ejector rods can rotate at the tops of the ejector rod columns and are arranged at the edge regions of the die-shaped regions; the upper part of the ejector rod is provided with a pair of spherical protrusions which are symmetrical with the center of the ejector rod shaft; when the bottom die assembly and the upper die assembly are assembled, the die-shaped area of the bottom die assembly and the upper die assembly forms a cavity of the car lamp face cover.

Description

Car light face guard forming die

Technical Field

The utility model belongs to the field of mold processing, and particularly relates to a forming mold for a car lamp mask.

Background

In the automotive industry, the production of automotive interiors and automotive panels has largely adopted various molds, such as stamping molds, injection molds, forging molds, casting wax molds, glass molds, and the like. The car lamp mask is manufactured through an injection molding process, and an injection molding mold is used.

An injection molding die is generally composed of two parts, a movable die mounted on a movable platen of an injection molding machine and a stationary die mounted on a stationary platen of the injection molding machine. During injection molding, the movable mold and the fixed mold are assembled to form a pouring system and a cavity, the movable mold and the fixed mold are separated during mold opening, and a product is separated from the mold through the ejection mechanism.

For example, chinese patents [ application No. 201020260816.5; the license bulletin No. CN201755900U discloses a secondary ejection mechanism of an automobile lampshade mould, which comprises an upper mould plate and a lower mould plate, wherein the upper mould plate is connected with a fixed mould plate, a mould pin is arranged on the lower mould plate, an ejector pin plate and an ejector pin compound plate are arranged in the mould pin, ejector pins are connected on the ejector pin plate and the ejector pin compound plate, a movable mould plate is arranged on the mould pin, a bevel insert is arranged in the movable mould plate, a mould cavity is formed between the bevel insert, the movable mould plate and the fixed mould plate, a formed automobile binding cover is arranged in the mould cavity, the ejector pins penetrate through the movable mould plate and the bevel insert to be contacted with the automobile binding cover, an ejector rod plate and an ejector pin compound plate are arranged in the mould pin, ejector rods are connected on the ejector rod plate and the ejector pin compound plate, the ejector pin compound plate and the movable mould plate are connected with the bevel insert, and limit screws are arranged between the ejector rod plate and the ejector pin compound plate.

The secondary ejection mechanism of the automobile lampshade mold firstly ejects the bevel insert and the automobile lampshade out of the movable mold plate through the ejector rods, and then forcibly ejects the automobile lampshade from the bevel insert through the ejector pins. Such an ejection mechanism has problems in that: 1. the acting force of the thimble on the automobile lamp shade is concentrated on one point, so that the surface of the automobile lamp shade is easily damaged, and the quality of the automobile lamp shade is influenced; 2. the thimble forces the automobile lamp shade to be ejected out from the bevel insert, the stress at the bevel is larger, the automobile lamp shade is easily broken at the bevel, and the product is scrapped.

Disclosure of Invention

In order to solve the problems in the prior art, the utility model provides an ejection mechanism of a car lamp cover forming die, which comprises the following components: the method comprises the following steps: the upper die assembly is driven by a lifting device to move up and down along the guide rods; the bottom die assembly comprises a pushing device, the pushing device drives a pushing plate to vertically move, a plurality of ejector rod columns are arranged at the top of the pushing plate, an ejector rod is arranged at the top of each ejector rod column, and the ejector rods can rotate at the top of the ejector rod columns and are arranged at the edge region of the die-shaped region; the upper part of the ejector rod is provided with a pair of spherical protrusions which are symmetrical with the center of the ejector rod shaft; when the bottom die assembly and the upper die assembly are assembled, the die-shaped area of the bottom die assembly and the upper die assembly forms a cavity of the car lamp face shield.

Preferably, the pushing device and the lifting device are one of an air cylinder, a hydraulic cylinder and a stepping motor.

Preferably, the diameter of the bottom of the ejector rod is larger than that of the ejector rod main body, and the top of the ejector rod column is provided with a through hole for the ejector rod main body to pass through and an inner concave part with the same shape and size as the bottom of the ejector rod.

Preferably, the top of the ejector rod column comprises an inherent part integrally formed with the main body of the ejector rod column and a splicing block which is spliced with the inherent part to form an annular top, the tops of the inherent part and the splicing block are both in a semicircular shape, the splicing block is divided into an upper layer and a lower layer, the outer diameter of the upper layer is smaller than that of the lower layer, and the periphery of the lower layer is also provided with a cylindrical surface part extending downwards.

Preferably, a screw hole is formed in the splicing part of the inherent part and the upper layer of the splicing block, two ends of the upper layer of the splicing block are provided with sheet structures extending out in the radial direction, each sheet structure is provided with a mounting hole corresponding to the screw hole, the splicing block is fixed on one side of the inherent part through a bolt, and the bottom of the ejector rod is limited in an inward concave part at the top of the ejector rod column; the sheet structure does not expose the cylindrical surface on which the tappet is located.

Preferably, the bottom die assembly is provided with a sliding groove below the edge region, and the lower part of the sliding groove is a cylindrical sliding groove, and the upper part of the sliding groove is a spiral sliding groove for respectively allowing the ejector rod column and the spherical protrusion to move up and down.

According to the utility model, after the injection molding of the car lamp face cover is finished, the ejector rod is pushed to move upwards by the ejector device, and due to the existence of the spherical surface bulge on the upper part and the rotatable design of the bottom part, the ejector rod can rotate and rise in the spiral chute of the bottom die, so that the finished car lamp face cover is ejected out of the bottom die assembly, the problems of breakage, adhesion and the like in the ejection process of materials are avoided, and the production safety and the yield are improved.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of the ejector.

Fig. 3 is a perspective view of the stem post and the stem.

Fig. 4 is a top view of the stem post and stem.

Fig. 5 is a longitudinal section of the stem post and the stem.

FIG. 6 is a top view of the bottom die assembly.

In the figure: 1. a pushing device; 2. pushing the top plate; 3. a jack post; 4. a top rod; 5. a bottom die assembly; 6. an upper die assembly; 7. a guide bar; 8. a lifting device; 31. a fixed part; 32. splicing blocks; 33. A sheet-like structure; 34. a through hole; 35. a concave portion; 41. spherical surface is convex; 42. the bottom of the ejector rod; 51. a mold-shaped region; 52. an edge region; 53. a cylindrical chute; 54. a spiral chute.

Detailed Description

Example 1

As shown in fig. 1-6, an embodiment of the present invention comprises: the automobile headlamp comprises a bottom die assembly 5 and an upper die assembly 6, wherein a plurality of guide rods 7 are arranged on the upper surface of the bottom die assembly 5, a die-shaped area 51 with the shape of the front surface or the back surface of two automobile lamp face shields is arranged in the middle of the bottom die assembly 5, and the upper die assembly 6 is driven by a lifting device 8 to move up and down along the guide rods 7; the bottom die assembly 5 comprises an ejector device 1, the ejector device 1 drives an ejector plate 2 to vertically move, a plurality of ejector rod columns 3 are arranged at the top of the ejector plate 2, an ejector rod 4 is arranged at the top of each ejector rod column 3, and the ejector rods 4 can rotate at the tops of the ejector rod columns 3 and are arranged at the edge area 52 of the die-shaped area 51; the upper part of the ejector rod 4 is provided with a pair of spherical protrusions 41 which are symmetrical with the axial center of the ejector rod 4; the lower surface of the upper die assembly 6 is provided with a male die with a shape of the back surface or the front surface of the car lamp cover at a position corresponding to the die-shaped area 51, and when the bottom die assembly 5 and the upper die assembly 6 are closed, the die-shaped area 51 forms a cavity of the car lamp cover.

More specifically, the pushing device 1 and the lifting device 8 are cylinders.

More specifically, the diameter of the ejector rod bottom 42 is larger than that of the main body of the ejector rod 4, and the top of the ejector rod column 3 is provided with a through hole 34 for the main body of the ejector rod 4 to pass through and an inner concave part 35 with the same shape and size as the ejector rod bottom 42.

More specifically, the top of the ejector rod column 3 comprises an inherent part 31 integrally formed with the main body of the ejector rod column and a splicing block 32 spliced with the inherent part 31 to form an annular top, the tops of the inherent part 31 and the splicing block 32 are both in a semi-circular shape, the splicing block 32 is divided into an upper layer and a lower layer, the outer diameter of the upper layer is smaller than that of the lower layer, and the periphery of the lower layer is provided with a cylindrical surface part extending downwards.

More specifically, a screw hole is formed in the splicing position of the inherent part 31 and the upper layer of the splicing block 32, sheet-shaped structures 33 extending out in the radial direction are arranged at two ends of the upper layer of the splicing block 32, mounting holes corresponding to the screw holes are formed in the sheet-shaped structures 33, the splicing block 32 is fixed to one side of the inherent part 31 through bolts, and the bottom 42 of the ejector rod is limited in an inward concave part 35 at the top of the ejector rod column 3; the sheet structure 33 does not expose the cylindrical surface on which the tappet 3 is located.

More specifically, the bottom die assembly 5 is provided with a sliding groove below the edge region 52, the lower portion of the sliding groove is a cylindrical sliding groove 53, and the upper portion of the sliding groove is a spiral sliding groove 54 for the top post 3 and the spherical protrusion 41 to move up and down respectively.

Example 2

More specifically, the ejection device 1 is an air cylinder, and the lifting device 8 is a stepping motor.

The design key point of the utility model lies in changing the ejector pin used for ejecting the material from the conventional straight-line motion orbit into the spirally rising motion orbit, in order to realize the change, the push rod structure is improved, the push rod structure is divided into two parts, namely an ejector post at the lower part and an ejector pin capable of being limited at the top part to rotate, at least two spherical protrusions which are symmetrical at 180 degrees are arranged on the ejector pin and are clamped into a spiral chute of the bottom die, when the cylinder drives the ejector pin to ascend, the spirally rising motion can be realized to eject the material, the ejection mode can avoid the adhesion of the material and the bottom die, the risk of breakage during ejection is also reduced, and the production efficiency and the yield are improved.

It should be noted that the bottom mold assembly and the upper mold assembly described in the present application necessarily include structures and auxiliary devices, such as injection molding holes, various mounting holes and fixing members, cooling pipelines and systems, which all are in the prior art, and the improvement of the mold in the present application is not in the above existing structures and thus is not described in detail, and the solution described in the present application should be a clear and complete technical solution.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a car light face guard forming die which characterized in that: the die comprises a bottom die assembly and an upper die assembly, wherein the upper surface of the bottom die assembly is provided with a plurality of guide rods and a die-shaped area, and the upper die assembly is driven by a lifting device to move up and down along the guide rods; the bottom die assembly comprises a pushing device, the pushing device drives a pushing plate to vertically move, a plurality of ejector rod columns are arranged at the top of the pushing plate, an ejector rod is arranged at the top of each ejector rod column, and the ejector rods can rotate at the top of the ejector rod columns and are arranged at the edge region of the die-shaped region; the upper part of the ejector rod is provided with a pair of spherical protrusions which are symmetrical with the center of the ejector rod shaft; when the bottom die assembly and the upper die assembly are assembled, the die-shaped area of the bottom die assembly and the upper die assembly forms a cavity of the car lamp face shield.

2. The vehicle lamp cover molding die according to claim 1, characterized in that: the pushing device and the lifting device are one of an air cylinder, a hydraulic cylinder and a stepping motor.

3. The vehicle lamp cover molding die according to claim 2, characterized in that: the diameter of the bottom of the ejector rod is larger than that of the ejector rod main body, and the top of the ejector rod column is provided with a through hole for the ejector rod main body to pass through and an inward concave part with the same shape and size as the bottom of the ejector rod.

4. The vehicle lamp cover molding die according to claim 3, characterized in that: the top of the ejector rod column comprises an inherent part integrally formed with the main body of the ejector rod column and a splicing block spliced with the inherent part to form an annular top, the tops of the inherent part and the splicing block are both in a semicircular shape, the splicing block is divided into an upper layer and a lower layer, the outer diameter of the upper layer is smaller than that of the lower layer, and the periphery of the lower layer is also provided with a cylindrical surface part extending downwards.

5. The vehicle lamp cover molding die according to claim 4, characterized in that: the splicing part of the inherent part and the upper layer of the splicing block is provided with a screw hole, two ends of the upper layer of the splicing block are provided with sheet structures extending out in the radial direction, each sheet structure is provided with a mounting hole corresponding to the position of the screw hole, the splicing block is fixed on one side of the inherent part through a bolt, and the bottom of the ejector rod is limited in the inward concave part at the top of the ejector rod column; the sheet structure does not expose the cylindrical surface on which the tappet is located.

6. The vehicle lamp cover molding die according to claim 5, characterized in that: the bottom die assembly is provided with a sliding groove below the edge region, and the lower part of the sliding groove is a cylindrical sliding groove, and the upper part of the cylindrical sliding groove is a spiral sliding groove for respectively allowing the ejector rod column and the spherical protrusion to move up and down.