CN116330595A

CN116330595A - Ejection mechanism

Info

Publication number: CN116330595A
Application number: CN202310358475.7A
Authority: CN
Inventors: 苏付强; 董志平; 付新韦; 宋尚生
Original assignee: Goertek Inc
Current assignee: Goertek Inc
Priority date: 2023-04-01
Filing date: 2023-04-01
Publication date: 2023-06-27

Abstract

The invention discloses an ejection mechanism, and relates to the technical field of dies. The ejector mechanism comprises a die frame, a fixed plate, an ejector plate, a male die plate and a female die plate are sequentially arranged in the die frame from bottom to top, wherein the male die plate is fixed on the die frame, a pull rod is arranged on the female die plate, an ejector pin is arranged on the ejector plate, the female die plate is driven to lift up through the pull rod after being lifted up by a first preset distance, the ejector plate is separated from the pull rod and limited on the male die plate after being lifted up by a second preset distance, so that the ejector pin ejects out a product, and the female die plate continues to move upwards to complete demolding. According to the invention, when the die is opened, the ejector pin plate is driven by using the pulling force during the die opening, so that the problems of large occupied space, high cost and limited injection molding machine table caused by the driving of the oil cylinder are solved.

Description

Ejection mechanism

Technical Field

The invention relates to the technical field of dies, in particular to an ejection mechanism.

Background

As an important molding processing method, injection molding is widely applied to the fields of machinery, chemical industry, traffic, instruments, household appliances and the like, and the produced parts have the characteristics of high precision, high complexity, high consistency, high production efficiency and low consumption energy, and have wide market demands and development prospects.

When special requirements are placed on the product, the gate needs to be placed on the inner side of the product, and no insert wires are allowed on the outer side, the ejector mechanism in the mold needs to be moved to the front mold, namely a back-pouring mold. The driving mode of the ejection mechanism of the backward flow mold is usually realized by external force such as an oil cylinder, an air cylinder and the like, the driving mode of the oil cylinder is most widely applied at present, but the oil cylinder occupies large space, the requirement on an injection molding machine is high, and the mold is often required to be large, so that the cost of the mold is high.

Disclosure of Invention

Aiming at the defects existing in the prior art, the invention provides an ejection mechanism which solves the problems of large occupied space, high cost and limited injection molding machine when a backward mold is ejected by using an oil cylinder.

In order to solve the technical problems, the invention adopts the following technical scheme:

the ejector mechanism comprises a die frame, a fixed plate, an ejector plate, a male die plate and a female die plate are sequentially arranged in the die frame from bottom to top, wherein the male die plate is fixed on the die frame, a pull rod is arranged on the female die plate, an ejector pin is arranged on the ejector plate, the female die plate is driven to lift up through the pull rod after being lifted up by a first preset distance, the ejector plate is separated from the pull rod and limited on the male die plate after being lifted up by a second preset distance, so that the ejector pin ejects out a product, and the female die plate continues to move upwards to complete demolding.

Further, the thimble board level is provided with the spout, sliding connection has the baffle in the spout, after the female template rises first preset distance, the pull rod butt the baffle and pass through the baffle drives the thimble board rises.

Further, a deflector rod is fixedly arranged on the male template, and when the ejector pin plate ascends for a second preset distance, the end part of the deflector rod extrudes the end part of the baffle plate to drive the baffle plate to slide in the sliding groove in a direction away from the pull rod, so that the baffle plate is separated from the pull rod.

Further, the end part of the baffle plate is a smooth concave surface, the end part of the deflector rod is a smooth convex surface, and the convex surface of the deflector rod is abutted against the concave surface of the baffle plate to press the baffle plate so as to enable the baffle plate to slide in a direction away from the pull rod.

Further, an elastic device is arranged between the side wall of the sliding groove far away from the pull rod and the baffle.

Further, the thimble plate comprises a first thimble plate and a second thimble plate, and the first thimble plate and the second thimble plate are buckled to form the chute.

Further, a limiting pin is arranged on the male template, a limiting clamp is arranged on the ejector plate, and when the ejector plate ascends for a second preset distance, the limiting clamp is clamped on the limiting pin.

Further, the limiting clamp is of a U-shaped structure, protrusions are arranged on the inner sides of the end parts of the limiting clamp relatively, and when the ejector pin plate ascends for a second preset distance, the limiting pins enter the limiting clamp and are limited in the limiting clamp through the protrusions.

Further, a groove is formed in the bottom of one side, close to the male die plate, of the pull rod, and when the pull rod ascends, the side wall of the groove abuts against the baffle plate and drives the ejector pin plate to ascend through the baffle plate.

Further, when the male template and the female template are in a die closing state, a second preset distance is formed between the top surface of the ejector pin plate and the bottom surface of the male template at intervals.

By adopting the technical scheme, the invention has the beneficial effects that:

the invention provides an ejection mechanism, which comprises a die frame, wherein a fixed plate, an ejector plate, a male die plate and a female die plate are sequentially arranged in the die frame from bottom to top, a pull rod is arranged on the female die plate, the female die plate moves upwards for a first preset distance, then the ejector plate is driven by the pull rod to continuously move upwards for a second preset distance, a product in the male die plate is ejected by an ejector pin on the ejector plate, and the female die plate continuously moves upwards to finish demoulding.

Drawings

FIG. 1 is a schematic view of the overall structure of an ejector mechanism of the present invention;

FIG. 2 is a schematic diagram of the interaction structure of a deflector rod and a baffle plate in the invention;

FIG. 3 is an enlarged view of a portion of the tie rod and baffle of the present invention;

in the figure: 1. a master template; 2. a male template; 3. a first ejector plate; 4. a second ejector plate; 5. a fixing plate; 6. a pull rod; 61. a groove; 7. a deflector rod; 71. a convex surface; 8. a limiting pin; 9. a limiting clamp; 91. a protrusion; 10. a baffle; 101. a concave surface; 11. a fixed block; 12. and a sliding groove.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 to 3, the ejector mechanism comprises a die carrier, wherein a fixing plate 5, an ejector plate, a male die plate 2 and a female die plate 1 are sequentially arranged in the die carrier from bottom to top, the male die plate 2 is fixed on the die carrier, a pull rod 6 is arranged on the female die plate 1, ejector pins are arranged on the ejector plate, the female die plate 1 is lifted by a first preset distance and then drives the ejector plate to lift by the pull rod 6, and the ejector plate is lifted by a second preset distance and then separated from the pull rod 6 and limited on the male die plate 2, so that the ejector pins eject products, and the female die plate 1 is lifted to finish demolding.

The mold frame is arranged on the outer sides of the fixing plate 5, the ejector pin plate, the male mold plate 2 and the female mold plate 1, and can be understood as being arranged around the fixing plate 5, the ejector pin plate, the male mold plate 2 and the female mold plate 1, the mold frame can be cuboid or square, and the shape of the mold frame is not limited. The female template 1 is fixedly provided with a pull rod 6, and the pull rod 6 can be fixed on the female template 1 through pins or bolts or can be directly welded on the female template 1. The first preset distance of rising of the mother template 1 through external power mechanism first to realize primary demoulding, the first preset distance of rising of mother template 1 is followed by the second preset distance of rising of the ejector plate, ejector pins are arranged on the ejector plate, the mother template 1 drives the ejector plate to move and realizes ejection of products through the ejector pins, and after the second preset distance of rising of the mother template 1, the mother template is separated from the connection with the ejector plate and continues to rise, so that the complete demoulding process is realized. When the mold is opened, the ejector plate of the backward flow mold is driven by the pulling force during the mold opening, so that the problems of large occupied space, high cost and limited injection molding machine table caused by the ejection of the backward flow mold driven by the oil cylinder are solved.

In an embodiment, the ejector plate is horizontally provided with a chute 12, the chute 12 is slidably connected with a baffle 10, and after the mother plate 1 rises by a first preset distance, the pull rod 6 abuts against the baffle 10 and drives the ejector plate to rise through the baffle 10. The bottom of one side of the pull rod 6, which is close to the male template 2, is provided with a groove 61, and when the pull rod 6 ascends, the side wall of the groove 61 of the pull rod 6 abuts against the baffle 10 and drives the ejector plate to ascend through the baffle 10.

Wherein, the pull rod 6 is close to the side of public template 2 or thimble board and is provided with recess 61, and recess 61 is located the tip of pull rod 6, and when public template 2 and female template 1 compound die state, the tip of baffle 10 is spacing in recess 61, and reserve first preset distance between the tip of vertical direction baffle 10 and the lateral wall of recess 61, and female template 1 rises first preset distance earlier and then butt baffle 10, realizes first drawing of patterns process. It should be noted that in this embodiment, the fixing block 11 is disposed on the peripheral side of the ejector plate, and when the mother mold 1 drives the ejector plate to move, the ejector plate slides upward along the inner side of the fixing block 11.

In this embodiment, the male die plate 2 is fixedly provided with a deflector rod 7, and when the ejector pin plate rises by a second preset distance, the end of the deflector rod 7 presses the end of the baffle plate 10 to slide the baffle plate 10 in the chute 12 in a direction away from the pull rod 6, and the baffle plate 10 is separated from the pull rod 6. The end of the baffle 10 is a smooth concave surface 101, the end of the deflector rod 7 is a smooth convex surface 71, and the convex surface 71 of the deflector rod 7 abuts against the concave surface 101 of the baffle 10 to press the baffle 10 to slide in a direction away from the pull rod 6. An elastic device is arranged between the side wall of the chute 12 away from the pull rod 6 and the baffle 10.

Further illustratively, the male die plate 2 is provided with a deflector rod 7, the deflector rod 7 extends vertically downwards, and the end of the deflector rod 7 is a smooth convex surface 71. The baffle 10 is slidably arranged in the chute 12, an elastic device is arranged between the side wall of the chute 12 far away from the pull rod 6 and the baffle 10, and the end part of the baffle 10 is a concave surface 101 matched with the end part of the deflector rod 7. When the pull rod 6 drives the baffle plate 10 to rise, the deflector rod 7 starts to squeeze the baffle plate 10 to enable the baffle plate 10 to move towards the chute 12 until the end of the baffle plate 10 is at least flush with the side surface of the thimble plate, which is close to the deflector rod 7, the pull rod 6 is separated from the baffle plate 10, and the mother template 1 continues to move upwards to finish the whole demoulding process. The end of the lever 7 and the end of the shutter 10 may have other shapes, so that the end of the lever 7 presses the end of the shutter 10 into the chute 12. In this embodiment the resilient means provided between the side wall of the chute 12 remote from the pull rod 6 and the baffle 10 is a spring.

In one embodiment, the ejector plate comprises a first ejector plate 3 and a second ejector plate 4, and the first ejector plate 3 and the second ejector plate 4 are buckled to form a chute 12. The ejector plate is composed of a first ejector plate 3 and a second ejector plate 4, and the first ejector plate 3 and the second ejector plate 4 are buckled to form a chute 12, so that the chute 12 is convenient to set, and an elastic device and a baffle 10 in the chute 12 are convenient to install.

In an embodiment, the male template 2 is provided with a limiting pin 8, the ejector plate is provided with a limiting clamp 9, and when the ejector plate rises by a second preset distance, the limiting clamp 9 is clamped on the limiting pin 8. The limiting clamp 9 is of a U-shaped structure, the inner side of the end part of the limiting clamp 9 is provided with a protrusion 91 relatively, and when the ejector pin plate ascends for a second preset distance, the limiting pin 8 enters the limiting clamp 9 and is limited in the limiting clamp 9 through the protrusion 91.

When the female template 1 drives the ejector plate to move upwards through the pull rod 6, the limiting clamp 9 on the ejector plate is clamped with the limiting pin 8 of the male template 2. The limiting clamp 9 is of a U-shaped structure, the inside of the end part of the limiting clamp 9 is provided with the bulge 91, the limiting clamp 9 is clamped with the limiting pin 8, the two sides of the end part of the limiting clamp 9 are firstly extended by the inner supporting end part of the limiting pin 8, then the limiting pin 8 enters into a space formed by the limiting clamp 9, the limiting clamp 9 is restored to the original shape, the bulge 91 on the inner side of the limiting clamp 9 can prevent the limiting pin 8 from being separated, and therefore when the female template 1 and the ejector plate are separated, the ejector plate is limited on the male template 2.

In one embodiment, when the male mold plate 2 and the female mold plate 1 are in a mold closing state, a second preset distance is formed between the top surface of the ejector plate and the bottom surface of the male mold plate 2. The cavity for containing the product is arranged in the male template 2 and the female template 1, the ejector plate is provided with the ejector pins, the ejector pins penetrate through the male template 2 and are communicated with the cavity, when the ejector pins lift up, the ejector pins can lift up the product, and when the ejector pins lift up for a second preset distance, the ejector pins complete the process of ejecting the product.

The whole demoulding process comprises the following steps: the female template 1 rises by a first preset distance under the traction of external power, and the female template 1 is separated from the male template 2 by the first preset distance to finish primary demoulding; the female template 1 continues to ascend and drives the baffle 10 through the pull rod 6 to further drive the ejector plate to ascend for a second preset distance, in the process of ascending of the ejector plate, the ejector pins on the ejector plate push up a product, meanwhile, the ejector plate is provided with the limiting clamps 9, the male template 2 is provided with the limiting pins 8, and the limiting pins 8 are clamped in the limiting clamps 9, so that the ejector plate is limited on the male template 2; meanwhile, when the ejector pin plate rises for a second preset distance, the deflector rod 7 on the male template 2 extrudes the baffle plate 10 to enable the baffle plate 10 to move into the sliding groove 12, the pull rod 6 is separated from the baffle plate 10, and the female template 1 continues to rise to achieve the whole demoulding process.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the claims, and all equivalent structures or equivalent processes using the descriptions and drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the claims.

Claims

1. The ejection mechanism comprises a die carrier and is characterized in that a fixed plate, an ejector plate, a male die plate and a female die plate are sequentially arranged in the die carrier from bottom to top,

the male template is fixed on the die carrier, the pull rod is arranged on the female template, the ejector pin plate is provided with an ejector pin, the ejector pin plate is driven to ascend through the pull rod after the female template ascends by a first preset distance, the ejector pin plate is separated from the pull rod and limited on the male template after the ejector pin plate ascends by a second preset distance, so that the ejector pin ejects out a product, and the female template continues to move upwards to finish demoulding.

2. The ejection mechanism of claim 1, wherein the ejector plate is horizontally provided with a chute, a baffle is slidably connected in the chute, and after the female die plate rises by a first preset distance, the pull rod abuts against the baffle and drives the ejector plate to rise through the baffle.

3. The ejection mechanism according to claim 2, wherein a deflector rod is fixedly arranged on the male die plate, and when the ejector plate rises for a second preset distance, the end of the deflector rod presses the end of the baffle plate to drive the baffle plate to slide in the sliding groove in a direction away from the pull rod, so that the baffle plate is separated from the pull rod.

4. An ejector mechanism according to claim 3, wherein the end of the baffle is a smooth concave surface and the end of the lever is a smooth convex surface, the convex surface of the lever abutting the concave surface of the baffle to compress the baffle to slide the baffle away from the lever.

5. The ejection mechanism of claim 2, wherein an elastic device is disposed between the side wall of the chute remote from the pull rod and the baffle.

6. The ejection mechanism of any one of claims 2 to 5, wherein the ejector plate comprises a first ejector plate and a second ejector plate that snap-fit to form the chute.

7. The ejection mechanism of claim 1, wherein a limit pin is provided on the male die plate, a limit clip is provided on the ejector plate, and the limit clip is snapped onto the limit pin when the ejector plate is raised a second predetermined distance.

8. The ejection mechanism of claim 7, wherein the limiting clip has a U-shaped structure, protrusions are disposed on inner sides of end portions of the limiting clip, and when the ejector plate is lifted a second predetermined distance, the limiting pins enter the limiting clip and are limited in the limiting clip through the protrusions.

9. The ejection mechanism according to claim 2, wherein a groove is formed in the bottom of one side of the pull rod, which is close to the male die plate, and when the pull rod ascends, the side wall of the groove abuts against the baffle plate and drives the ejector plate to ascend through the baffle plate.

10. The ejection mechanism of claim 1, wherein the top surface of the ejector plate is spaced from the bottom surface of the male plate by the second predetermined distance when the male and female plates are in the clamped state.