CN222495258U - Sliding block core-pulling demoulding mechanism of injection mould of inner liner of tail box - Google Patents

Abstract

The utility model relates to a slide block core-pulling demoulding mechanism of a tail box liner injection mould, and belongs to the technical field of injection moulds. The movable mold plate is provided with a first hydraulic cylinder fixedly connected to the side wall of the movable mold plate, a first piston rod is arranged on the first hydraulic cylinder, the first piston rod extends to a pin hole on one side of a molding cavity, a second piston rod is arranged on the second hydraulic cylinder, a fixedly connected sliding block is arranged on the second piston rod, a top block in sliding connection is arranged on a sliding rail, a molding part is arranged on one side of the top block, the molding part is arranged in the molding cavity and is used for forming a pin hole on the other side, in the scheme, the first piston rod and the top block are directly arranged in the molding cavity and are used for forming a structure of the pin hole on an installation groove in the injection molding process, the first piston rod and the top block are pulled out from the molding cavity through a core pulling mechanism, interference caused in the demolding process is avoided, and the pin hole on the installation groove is formed in one step in the mold without secondary punching processing, so that the production efficiency of the liner is improved.

Description

Sliding block core-pulling demoulding mechanism of injection mould of inner liner of tail box

Technical Field

The utility model belongs to the technical field of injection molds, and relates to a slide block core-pulling demolding mechanism of a tail box liner injection mold.

Background

In the electric motor car structure, can install a back tail box at the afterbody of electric motor car generally for store the required article of carrying of trip, the back tail box comprises lower box and last box, wherein is provided with the inner bag structure in the lower box, goes up the box and is connected with the inner bag through articulated mode of connecting, consequently needs to set up the mounting groove in the inner bag structure, and offer the pinhole in the both sides of mounting groove, be used for subsequent installation procedure. Because the inner container is made of plastic raw materials, the inner container is manufactured by adopting an injection mold, and the product can be efficiently and accurately produced.

The production process of the mould is that firstly, the plastic raw material is heated to a molten state, then the plastic melt is injected into the forming cavity of the mould, after the forming cavity is filled with the plastic melt and cooled and formed, a plastic product corresponding to the structure of the forming cavity can be formed, after the mould is opened, the mould is ejected out by a demoulding mechanism, and thus the product can be manufactured and produced rapidly.

However, the injection mold in the prior art still has some defects, the injection mold for the inner container in the prior art only forms the side wall of the inner container and the structure of the mounting groove in the production process, the pin hole on the mounting groove needs to be punched secondarily after the inner container is demolded, if the structure for forming the pin hole is directly arranged in the mold, the inner container is difficult to eject and demold in the demolding process, and the pin hole structure cannot be formed in the mold once, so that the production efficiency of the inner container is reduced.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a slide block core-pulling and demolding mechanism of a tail box liner injection mold.

The slide block core-pulling demoulding mechanism of the injection mould of the trunk liner comprises a top plate, a fixed template, a movable template, a foot plate and a bottom plate which are sequentially arranged, wherein a reciprocating push plate is arranged on the inner side of the foot plate, a forming cavity for injection moulding is arranged between the fixed template and the movable template, a liner for cooling forming is arranged in the forming cavity, a mounting groove is formed in the outer side wall of the liner, pin holes are oppositely formed in two sides of the mounting groove, a first hydraulic cylinder which is fixedly connected is arranged on the side wall of the movable template, a first piston rod is arranged on the first hydraulic cylinder, the first piston rod extends to the inside of the forming cavity to form a pin hole on one side, a connecting plate which is fixedly connected is arranged on the movable template, a core-pulling mechanism is arranged on the connecting plate, the core-pulling mechanism comprises a second hydraulic cylinder which is fixedly connected with the connecting plate, a second piston rod is arranged on the second piston rod, a slide rail which is fixedly connected with the inside of the slide block, a top block which is in sliding connection is arranged on the slide rail, one side of the top block is provided with a forming part, and the forming part is arranged on one side of the top block, and the forming part is far away from the forming part of the forming part.

In the scheme, the pin holes on two sides of the mounting groove are respectively formed by the first piston rod and the forming part on the ejector block, in the demolding process, the first piston rod is retracted by the first hydraulic cylinder to withdraw the first piston rod from the forming cavity, meanwhile, the second piston rod is retracted by the second hydraulic cylinder, the second piston rod drives the fixedly connected sliding block to move to the outer side of the mold, the sliding block can not directly drive the ejector block to withdraw due to the fact that the forming part on one end of the ejector block is arranged in the formed pin hole, but the ejector block can transversely move along the track of the sliding block to the other side, which is far away from the forming part, of the sliding rail, so that the forming part is completely withdrawn from the pin hole on the other side, the sliding block continuously moves outwards, the whole ejector block is withdrawn from the forming cavity, and finally the formed liner is ejected from the mold.

In the slide block core-pulling demoulding mechanism of the tail box liner injection mould, a first limiting block is arranged inside the slide block, the first limiting block is arranged at the middle section of the slide rail and protrudes upwards, a guide part is arranged at the bottom of the top block, and the guide part is arranged inside the slide rail and can be propped against the first limiting block. The guide part plays a role in guiding the ejector block, so that the ejector block can move along the sliding rail, and after the forming part is completely transversely pulled out of the pin hole, a first limiting block arranged on the sliding rail can abut against the guide part at the bottom of the sliding block to longitudinally pull out the ejector block from the forming cavity.

In the sliding block core-pulling demoulding mechanism of the tail box liner injection mould, a second limiting block is arranged at one end, close to the second piston rod, of the sliding rail, and the guide part moves back and forth between the second limiting block and the first limiting block. Before injection molding starts, the second hydraulic cylinder stretches out, the sliding block abuts against the guide part through the second limiting block on the sliding rail, the top block is pushed to move inwards, and the forming part on the top block reaches the position where the pin hole is formed.

In the sliding block core-pulling demoulding mechanism of the injection mould of the tail box inner container, two mounting grooves with the same structure are formed in the outer side wall of the inner container, and two core-pulling mechanisms with the same structure are arranged on the connecting plate. The core pulling mechanism is characterized in that a pin hole in one mounting groove is formed, and two mounting grooves are required to be formed for connection between the upper box body and the inner container to improve connection stability, so that two core pulling mechanisms with corresponding structures are arranged in the die and used for respectively forming the pin holes in the mounting grooves.

In the slide block core-pulling demoulding mechanism of the tail box liner injection mould, a feeding port is arranged on the top plate, a feeding runner is arranged at the bottom of the feeding port, and the feeding runner is connected with a spray head arranged inside the fixed mould plate. The plastic raw material heated to a molten state is injected into the feed runner through the feed inlet and then flows into the nozzle.

In the sliding block core-pulling demolding mechanism of the tail box liner injection mold, a plurality of connecting runners are arranged at the bottom of the inner side of the movable mold plate, the connecting runners are connected with the molding cavity, and the bottom of the spray head is connected with the junction of the connecting runners. The nozzle injects the melt in the connecting runner, and fills the forming cavity after the flow splitting effect of the connecting runner.

In the slide block core-pulling demoulding mechanism of the tail box liner injection mould, a plurality of fixedly connected straight ejector pins are arranged on the push plate, one ends of the straight ejector pins penetrate through the movable mould plate and extend to the bottom of the forming cavity, and a plurality of supporting feet are arranged at the bottoms of the fixed mould plate and the foot plate. The supporting legs are used for supporting the whole die, after the core pulling mechanism is pulled out, the push plate is pushed by the external demoulding device, so that the straight ejector pins fixedly connected on the push plate are ejected out from the inside of the driven die plate, and the liner is demoulded.

Compared with the prior art, the utility model has the following advantages:

1. in this scheme, through directly setting up first piston rod and kicking block at the shaping intracavity portion for form the structure of pinhole on the mounting groove at the in-process of moulding plastics, rethread loose core mechanism is taken first piston rod and kicking block out from the shaping intracavity, avoids the interference that the drawing of patterns in-process caused, because the pinhole on the mounting groove is at the inside one shot forming of mould, need not to carry out the secondary processing of punching again, has promoted the production efficiency of inner bag.

2. In this scheme, after the shaping portion on the kicking block transversely takes out from the pinhole completely, the first stopper that sets up on the slide rail can lean against with the guiding portion of slider bottom, takes out the kicking block longitudinally from the shaping chamber, and after the drawing of patterns is accomplished, before the beginning of moulding plastics next time, the second pneumatic cylinder stretches out, and the slider leans against with the guiding portion through the second stopper on the slide rail, promotes the kicking block to remove to the shaping intracavity, makes the shaping portion on the kicking block reach the position that forms the pinhole.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the right-side half-section structure of the present utility model;

FIG. 3 is a schematic elevational cross-sectional view of the present utility model;

FIG. 4 is a schematic view of the partial enlarged structure of FIG. 3;

FIG. 5 is a schematic view of the core pulling mechanism of the present utility model;

fig. 6 is a schematic perspective view of the inner container of the present utility model.

In the figure, 1, a top plate, 1a, a feed inlet, 1b, a feed runner, 1c, a spray head, 2, a fixed template, 2a, a first hydraulic cylinder, 2a1, a first piston rod, 3, a movable template, 3a, a connecting plate, 3b, a connecting runner, 4, a foot plate, 4a, a push plate, 4b, a straight thimble, 5, a bottom plate, 6, a core pulling mechanism, 6a, a second hydraulic cylinder, 6b, a second piston rod, 7, a sliding block, 7a, a first limiting block, 7b, a second limiting block, 7c, a sliding rail, 8, a top block, 8a, a forming part, 8b, a guiding part, 9, a liner, 9a, a mounting groove, 9b, a pin hole, 10, a supporting leg, 11 and a forming cavity.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

Examples

As shown in fig. 1, in the slider core-pulling demolding mechanism of the injection mold for the inner liner of the tail box, the mechanism comprises a top plate 1, a fixed template 2, a movable template 3, a foot plate 4 and a bottom plate 5 which are sequentially arranged, wherein the top plate 1 is fixedly connected with the fixed template 2, the fixed template 2 is in sliding connection with the movable template 3, the movable template 3 is fixedly connected with the foot plate 4, the foot plate 4 is fixedly connected with the bottom plate 5, a push plate 4a in sliding connection is arranged on the inner side of the foot plate 4, a plurality of supporting feet 10 are arranged at the bottoms of the fixed template 2 and the foot plate 4, a fixedly connected connecting plate 3a is arranged at the bottom of the movable template 3, two core-pulling mechanisms 6 are arranged on the connecting plate 3a, and a feed inlet 1a is arranged at the center of the top plate 1.

As shown in fig. 2 and fig. 3, a feeding runner 1b is arranged at the bottom of the feeding port 1a, the feeding runner 1b is connected with a spray head 1c arranged inside the movable die plate 3, a forming cavity 11 is arranged between the fixed die plate 2 and the movable die plate 3, a plurality of connecting runners 3b are arranged at the bottom of the movable die plate 3, the connecting runners 3b are connected with the forming cavity 11, the bottom of the spray head 1c is connected with the junction of the connecting runners 3b, a plurality of fixedly connected straight ejector pins 4b are arranged on the push plate 4a, and one ends of the straight ejector pins 4b penetrate through the movable die plate 3 and extend to the bottom of the forming cavity 11.

As shown in fig. 3-5, a first hydraulic cylinder 2a is arranged at two sides of the movable mold plate 3, a first piston rod 2a1 is arranged on the first hydraulic cylinder 2a at two sides, the first piston rod 2a1 extends to the inside of a forming cavity 11, a core pulling mechanism 6 on the connecting plate 3a comprises a second hydraulic cylinder 6a, a second piston rod 6b is arranged on the second hydraulic cylinder 6a, a fixedly connected sliding block 7 is arranged on the second piston rod 6b, an inclined sliding rail 7c is arranged in the sliding block 7, a first limiting block 7a is arranged at the middle section of the sliding rail 7c, a second limiting block 7b is arranged at one end of the sliding rail 7c close to the second piston rod 6b, a top block 8 in sliding connection is arranged on the sliding rail 7c, a forming part 8a is arranged at one side of the top block 8, the forming part 8a can move to the inside of the forming cavity 11, a guide part 8b in sliding connection with the sliding rail 7c is arranged at the bottom of the top block 8, the top block 8 is in sliding connection with the sliding part 8b through a guide part 8b structure, the top block 7c is in sliding connection with the sliding block 7c, and two ends of the sliding block 7a and the first limiting block 7a and the second limiting block 7b can move towards the two ends of the sliding block 7b and the first limiting block 7b and the second limiting block 7b are opposite to the first limiting block 7b and the second limiting block 7 b.

In the structure of fig. 4, the left core pulling mechanism 6 is in an ejected state, the forming portion 8a is located in the forming cavity 11, the right core pulling mechanism 6 is in a half-pulled state, at this time, the slide block 7 just completes the lateral movement, the forming portion 8a is completely pulled out from the forming cavity 11, and when the slide block 7 continues to move outwards, the first limiting block 7a abuts against the guiding portion 8b, and the top block 8 is pulled out from the forming cavity 11 longitudinally.

As shown in fig. 6, the forming cavity 11 is internally provided with a cooling forming liner 9, the outer side wall of the liner 9 is provided with two mounting grooves 9a, two sides of the mounting grooves 9a are provided with oppositely arranged pin holes 9b, one side of the pin holes 9b is formed through the first piston rod 2a1, and the other side of the pin holes 9b is formed through a forming part 8a on the top block 8.

The working principle of the scheme is as follows, as shown in fig. 1-6, plastic raw materials heated to a molten state are injected into a feed runner 1b through a feed inlet 1a and then flow into a spray head 1c, after the flow distribution effect of a bottom connecting runner 3b, the inside of a forming cavity 11 is filled, after the inside of the forming cavity 11 is filled and cooled and formed, a movable die plate 3 is moved to open a die for demoulding.

The first hydraulic cylinders 2a at two sides shrink the first piston rod 2a1, the first piston rod 2a1 is pulled out from the forming cavity 11, the second hydraulic cylinder 6a shrinks the second piston rod 6b, the second piston rod 6b drives the fixedly connected sliding block 7 to move towards the outer side of the die, the sliding block 7 can not directly drive the sliding block 8 to be pulled out because the forming part 8a on one end of the sliding block 8 is arranged in the formed pin hole 9b, but the sliding block 7 is provided with the sliding rail 7c extending towards one side far away from the forming part 8a, the sliding block 8 can transversely move towards the other side provided with the forming part 8a along the track of the sliding rail 7c, so that the forming part 8a is completely pulled out from the pin hole 9b at the other side, the sliding block 7 continues to move outwards, the first limiting block 7a abuts against the guide part 8b at the bottom of the sliding block 7, the sliding block 8 is longitudinally pulled out from the forming cavity 11, and finally the push plate 4a is pushed by an external demoulding device, so that the straight push plate 4b fixedly connected to the push plate 4a is ejected from the inner liner 3, and the liner 9 is demoulded. After demolding is completed, before the next injection molding is started, the second hydraulic cylinder 6a stretches out, the sliding block 7 abuts against the guide part 8b through the second limiting block 7b on the sliding rail 7c, the top block 8 is pushed to move into the molding cavity 11, and the molding part 8a on the top block 8 returns to the position where the pin hole 9b is formed.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Although terms such as 1, top plate, 1a, feed port, 1b, feed runner, 1c, head, 2, fixed platen, 2a, first cylinder, 2a1, first piston rod, 3, movable platen, 3a, connecting plate, 3b, connecting runner, 4, foot plate, 4a, push plate, 4b, straight ejector pin, 5, bottom plate, 6, core pulling mechanism, 6a, second cylinder, 6b, second piston rod, 7, slider, 7a, first stopper, 7b, second stopper, 7c, slide rail, 8, top block, 8a, forming part, 8b, guide part, 9, inner liner, 9a, mounting groove, 9b, pin hole, 10, support pin, 11, forming cavity, etc. are used more herein, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the nature of the utility model and should be construed in a manner consistent with their spirit and scope.

Claims (7)

1. The utility model provides a draw core demoulding mechanism of sliding block of trunk inner bag injection mold, includes roof (1), fixed template (2), movable mould board (3), sole (4) and bottom plate (5) of arranging in proper order, sole (4) inboard is equipped with reciprocating motion's push pedal (4 a), be equipped with between fixed template (2) and movable mould board (3) and be used for injection moulding's shaping chamber (11), be equipped with cooling shaping inner bag (9) in shaping chamber (11), a serial communication port, be equipped with mounting groove (9 a) on inner bag (9) lateral wall, mounting groove (9 a) both sides are provided with pinhole (9 b) relatively, be equipped with first pneumatic cylinder (2 a) that link firmly on movable mould board (3) lateral wall, be equipped with first piston rod (2 a 1) on first pneumatic cylinder (2 a), first piston rod (2 a 1) extend to inside pinhole (9 b) that are used for forming one side of shaping chamber (11), be equipped with on movable mould board (3) and link firmly connecting plate (3 a), be equipped with on connecting plate (3 a) and loose core mechanism (6) are equipped with on the lateral wall, be equipped with on connecting plate (6 a) respectively, link firmly (6) and be equipped with second pneumatic cylinder (6) and link (6 b) on the lateral wall of movable mould board (3), the novel sliding block is characterized in that an oblique sliding rail (7 c) is arranged inside the sliding block (7), a top block (8) in sliding connection is arranged on the sliding rail (7 c), a forming part (8 a) is arranged on one side of the top block (8), the forming part (8 a) is arranged inside a forming cavity (11) and used for forming a pin hole (9 b) on the other side, and the sliding rail (7 c) is inclined towards one side far away from the forming part (8 a).

2. The sliding block core-pulling demolding mechanism of the injection mold of the trunk liner according to claim 1, wherein a first limiting block (7 a) is arranged inside the sliding block (7), the first limiting block (7 a) is arranged at the middle section of the sliding rail (7 c) and protrudes upwards, a guiding part (8 b) is arranged at the bottom of the top block (8), and the guiding part (8 b) is arranged inside the sliding rail (7 c) and can abut against the first limiting block (7 a).

3. The slide block core-pulling demolding mechanism of the injection mold of the trunk liner according to claim 2, wherein a second limiting block (7 b) is arranged at one end of the sliding rail (7 c) close to the second piston rod (6 b), and the guiding part (8 b) moves reciprocally between the second limiting block (7 b) and the first limiting block (7 a).

4. The sliding block core-pulling demolding mechanism of the injection mold of the trunk liner according to claim 3, wherein two mounting grooves (9 a) with the same structure are formed in the outer side wall of the liner (9), and two core-pulling mechanisms (6) with the same structure are arranged on the connecting plate (3 a).

5. The sliding block core-pulling demolding mechanism of the injection mold of the trunk liner according to claim 1, wherein a feeding port (1 a) is formed in the top plate (1), a feeding runner (1 b) is formed in the bottom of the feeding port (1 a), and the feeding runner (1 b) is connected with a spray head (1 c) arranged inside the fixed mold plate (2).

6. The sliding block core-pulling demolding mechanism of the injection mold of the trunk liner according to claim 5, wherein a plurality of connecting runners (3 b) are arranged at the bottom of the inner side of the movable mold plate (3), the connecting runners (3 b) are connected with the molding cavity (11), and the bottom of the spray head (1 c) is connected with the junction of the connecting runners (3 b).

7. The sliding block core-pulling demolding mechanism of the injection mold of the trunk liner according to claim 1, wherein a plurality of fixedly connected straight ejector pins (4 b) are arranged on the push plate (4 a), one end of each straight ejector pin (4 b) penetrates through the movable mold plate (3) and extends to the bottom of the molding cavity (11), and a plurality of supporting feet (10) are arranged at the bottoms of the fixed mold plate (2) and the foot plate (4).