CN211683288U - Light-weight large-scale precise automobile bumper tunnel core-pulling mechanism - Google Patents

Abstract

The utility model provides a large-scale accurate car bumper tunnel of lightweight mechanism of loosing core belongs to the injection mold field. The automobile bumper injection molding device comprises a molding cavity for injection molding of an automobile bumper, wherein an inclined surface step is arranged in the molding cavity, a core pulling rod is arranged inside the inclined surface step, one end of the core pulling rod extends out of the inclined surface step, a core pulling block is clamped on the tail end, far away from the molding cavity, of the core pulling rod, and the core pulling block can perform reciprocating linear motion along the vertical direction so as to drive the core pulling rod to perform reciprocating linear motion along the horizontal direction. The utility model has the advantages of simple structure, high production efficiency and high product quality.

Description

Light-weight large-scale precise automobile bumper tunnel core-pulling mechanism

Technical Field

The utility model belongs to the injection mold field relates to a large-scale accurate car bumper tunnel of lightweight mechanism of loosing core.

Background

The automobile bumper is a large-scale product formed by injection molding through an injection mold, a hole-shaped structure exists on the surface of the automobile bumper, the requirement on the diameter accuracy of the hole-shaped structure is high during production, the specific part is required to be specially processed in the production process, the production speed can be reduced, and unnecessary waste of production cost is caused because the overall working efficiency is influenced by accurate production of smaller parts.

For example, the chinese invention patent discloses an injection mold having a front mold tunnel core-pulling mechanism [ application No.: 201510389216.6], comprising a female die fixing plate, a female die and an integral male die, wherein a first sliding block and an inclined guide pillar fixing block are embedded in a gap between the female die fixing plate and the female die, and an inclined guide pillar capable of driving the first sliding block to slide is fixedly arranged on the inclined guide pillar fixing block; the injection mold further comprises two groups of front mold tunnel core pulling mechanisms, each group of front mold tunnel core pulling mechanisms comprises a core pulling oil cylinder and a core pulling limiting block which are fixedly installed on the side wall of the female mold fixing plate respectively, a fixing block is obliquely installed on the upper surface of the core pulling limiting block, the front mold tunnel core pulling mechanisms are slidably connected to the left side of the obliquely wedged fixing block and a core pulling body which is inserted into the left side of the core pulling connecting block, the top of the obliquely wedged front mold tunnel core pulling mechanism is buckled at the bottom of a piston rod of the core pulling oil cylinder, and the core pulling body is driven by the core pulling oil cylinder to push into the first sliding block or pull. However, in this solution, the hole forming portion is exposed, and the hole-shaped structure still needs to be precisely processed, so that the production efficiency of the whole injection molding product is reduced.

Disclosure of Invention

The utility model aims at the above-mentioned problem, a mechanism is taken out in large-scale accurate car bumper tunnel of lightweight is provided.

The utility model provides a large-scale accurate car bumper tunnel of lightweight mechanism of loosing core, is including the shaping chamber that is used for car bumper to mould plastics, the shaping intracavity be equipped with the inclined plane step, the inside of inclined plane step is equipped with the core pulling rod, the inclined plane step is extended to the one end of core pulling rod, the core pulling rod is kept away from the end in shaping chamber and is gone up the joint and have the core pulling block, thereby the core pulling block can carry out reciprocal linear motion along vertical direction and drive the reciprocal linear motion of core pulling rod along the horizontal direction.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the inclined surface step is positioned on the inner wall of the forming cavity, the end surface of the inclined surface step, which is far away from the forming cavity, is a smooth transition curved surface, and the core pulling rod is positioned at the center of the end surface of the inclined surface step.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the inclined surface step is internally provided with a core pulling track matched with the core pulling rod, the core pulling rod is positioned in the core pulling track, and the tail end of the core pulling rod, which is far away from the core pulling block, extends out of one end of the core pulling track, which is far away from the core pulling block.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the core pulling track penetrates through the inclined step, and the end face, far away from the core pulling block, of the core pulling rod is provided with the hole forming circular truncated cone which is positioned outside the core pulling track.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the end face of the core pulling rod, which is far away from the core pulling block, is obliquely arranged, the hole forming circular table is positioned at the center of the oblique end face of the core pulling rod, and the end face of the hole forming circular table is parallel to the oblique end face of the core pulling rod.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, one side of the core pulling block, which is close to the core pulling rod, is provided with an inclined track matched with the core pulling rod, the tail end of the core pulling rod, which is close to the core pulling block, is positioned in the inclined track, and the core pulling rod can perform reciprocating linear motion in the inclined track.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the inclined track is positioned inside the core pulling block, the tail end of the core pulling block, which is close to the core pulling block, is provided with a sliding block matched with the inclined track, the sliding block is positioned in the inclined track, and the top surface of the sliding block is fixedly connected with a limiting block.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the inclined track is obliquely arranged from low to high along one side close to the core pulling rod to one side far away from the core pulling rod, the sliding block is parallel to the inclined track, and the sliding block is in clamping fit with the inclined track so that the sliding block can slide along the inclined track.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the projection of the end face of the inclined track close to one side of the limiting block is positioned in the limiting block, the oil cylinder is fixedly connected below the core pulling block, and when the oil cylinder drives the core pulling block to do reciprocating linear motion, the core pulling block does reciprocating linear motion in the core pulling track.

In the light-weight large-scale precise automobile bumper tunnel core pulling mechanism, the oil cylinder main shaft is vertical to the central shaft of the core pulling rod, and when the oil cylinder main shaft performs downward or upward reciprocating linear motion along the axial direction, the core pulling rod and the oil cylinder main shaft are driven to perform reciprocating linear motion in the same direction, so that the core pulling rod is driven to perform axial reciprocating linear motion outwards or inwards.

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

1. the inclined plane step is hidden inside the molding cavity, the hole molding part is arranged on the core pulling rod, the core pulling rod is driven to move through the movement of the core pulling rod before the product injection molding die sinking, the molding hole which is in line with the processing precision is reserved on the surface of the automobile bumper, and compared with the traditional processing injection molding, the complex degree of the product injection molding production is reduced, and the production efficiency is improved.

2. The stopper is located the orbital top of slope, and when the in-process of loosing core piece motion, the sliding block slides inside the track of slope all the time, and the stopper restriction sliding block breaks away from the track of slope when removing, avoids the core pulling rod to reset failure.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of the internal structure of the present invention.

Fig. 2 is a schematic view of a plunger rod.

Fig. 3 is a schematic diagram of the internal structure of the present invention.

Fig. 4 is an enlarged view at a in fig. 1.

In the figure: the core-pulling mechanism comprises a molding cavity 1, an inclined surface step 2, a core-pulling rod 3, a core-pulling block 4, a core-pulling track 5, a hole molding circular table 6, an inclined track 7, a sliding block 8, a limiting block 9 and an oil cylinder 10.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 4, a large-scale precision car bumper tunnel of lightweight mechanism of loosing core, including being used for the shaping chamber 1 that the car bumper was moulded plastics, shaping chamber 1 in be equipped with inclined plane step 2, the inside of inclined plane step 2 is equipped with core pulling rod 3, inclined plane step 2 is extended to the one end of core pulling rod 3, core pulling rod 3 keeps away from the end of shaping chamber 1 and goes up the joint and have core pulling block 4, thereby core pulling block 4 can carry out reciprocal linear motion along vertical direction and drive core pulling rod 3 along the reciprocal linear motion of horizontal direction.

Automobile bumper is the large-scale product that uses injection mold injection moulding, there is the cavernous structure on automobile bumper's surface, it is higher to the diameter precision requirement of cavernous structure when production, and need the detailed position of special treatment in process of production, thereby reduce production speed, in this scheme, inclined plane step 2 hides inside shaping chamber 1, set up the fashioned position in hole on core pulling bar 3, before the product injection moulding die sinking, the motion through core pulling bar 4 drives core pulling bar 3 and removes, leave the shaping hole that accords with machining precision on automobile bumper surface, compare with traditional processing injection moulding, the complexity of product injection moulding production has been reduced, and the production efficiency is improved.

As shown in fig. 1 and fig. 2, in this embodiment, the inclined step 2 is located on the inner wall of the molding cavity 1, the end surface of the inclined step 2 away from the molding cavity 1 is a smooth transitional curved surface, and the core pulling rod 3 is located at the center of the end surface of the inclined step 2.

Inclined plane step 2 is located the inside of one-tenth die cavity 1, compares with traditional bumper injection mold, and the slider joint line is located the inner wall of one-tenth die cavity 1, has improved the aesthetic measure of product to the quality of product has been improved from essence.

As shown in fig. 4, in this embodiment, a core-pulling rail 5 matched with the core-pulling rod 3 is disposed inside the inclined step 2, the core-pulling rod 3 is located inside the core-pulling rail 5, and the end of the core-pulling rod 3 away from the core-pulling block 4 extends out of one end of the core-pulling rail 5 away from the core-pulling block 4.

The core pulling rod 3 extends out of the core pulling track 5 to be subjected to injection molding, the problem that a sliding block parting line on the surface of an original product is exposed is solved, and the precision of a finished product hole-shaped structure is improved while the precision of the finished product surface fault is improved.

As shown in fig. 4, in this embodiment, the core-pulling track 5 penetrates through the inclined step 2, and a hole-forming circular table 6 is disposed on an end surface of the core-pulling rod 3 away from the core-pulling block 4, where the hole-forming circular table 6 is located outside the core-pulling track 5.

Hole shaping round platform 6 is located the terminal surface of coring pole 3, and hole shaping round platform 6 extends and looses core track 5 and carries out injection moulding, compares with traditional injection moulding back to the tubular structure operation of punching again, has both improved the machining efficiency of the production of moulding plastics, has also improved the precision of hole site.

As shown in fig. 4, in this embodiment, the core rod 3 is disposed away from the end surface of the core rod 4, the hole forming circular table 6 is located at the center of the inclined end surface of the core rod 3, and the end surface of the hole forming circular table 6 is parallel to the inclined end surface of the core rod 3.

The end surface of the hole forming circular truncated cone 6 is determined by the inclination degree of the core pulling rod 3, and when the hole-shaped structure is formed and the core is pulled outwards, the hole-shaped structure which is formed is prevented from being damaged.

As shown in fig. 1, in this embodiment, an inclined rail 7 matched with the core rod 3 is disposed on one side of the core block 4 close to the core rod 3, the end of the core rod 3 close to the core block 4 is located in the inclined rail 7, and the core rod 3 can perform a reciprocating linear motion in the inclined rail 7.

The core-pulling block 4 is clamped with the core-pulling rod 3, actually, the inclined rail 7 and the core-pulling rod 3 are clamped with each other, and when the core-pulling block 4 moves, the position of the inclined rail 7 changes, so that the core-pulling rod 3 is driven to move horizontally.

As shown in fig. 3 and 4, in this embodiment, the inclined rail 7 is located inside the core-pulling block 4, the end of the core-pulling bar 3 close to the core-pulling block 4 is provided with a sliding block 8 matched with the inclined rail 7, the sliding block 8 is located inside the inclined rail 7, and the top surface of the sliding block 8 is fixedly connected with a limiting block 9.

The stopper 9 is located the top of inclined rail 7, and when the in-process of the motion of the piece 4 of loosing core, sliding block 8 slides inside inclined rail 7 all the time, and stopper 9 restriction sliding block 8 breaks away from inclined rail 7 when removing, avoids the core rod 3 failure that resets.

As shown in fig. 4, in this embodiment, the inclined rail 7 is arranged obliquely from low to high along a side close to the withdrawal rod 3 to a side away from the withdrawal rod 3, the sliding block 8 is parallel to the inclined rail 7, and the sliding block 8 is engaged with the inclined rail 7 so that the sliding block 8 can slide along the inclined rail 7.

The sliding block 8 is always located in the inclined track 7, and when the core pulling block 4 is driven by the main shaft of the oil cylinder 10 to move downwards, the inclined track 7 moves to drive the sliding block 8 to move outwards, so that the core pulling rod 3 is driven to slide.

As shown in fig. 1, in this embodiment, a projection of the inclined rail 7 near an end surface of one side of the limit block 9 is located inside the limit block 9, an oil cylinder 10 is fixedly connected below the core pulling block 4, and when the oil cylinder 10 drives the core pulling block 4 to perform a reciprocating linear motion, the core pulling rod 3 performs a reciprocating linear motion inside the core pulling rail 5.

The inclined rail 7 penetrates the core block 4, but the distance that the slide block 8 slides in the inclined rail 7 is determined by the main shaft of the cylinder 10 together with the core block 4, so when the motion track of the slide block 8 is limited, the distance between the two should be taken into consideration.

As shown in fig. 1 and 4, in this embodiment, the main shaft of the oil cylinder 10 is perpendicular to the central axis of the core rod 3, and when the main shaft of the oil cylinder 10 performs a reciprocating linear motion in a downward or upward direction along the axial direction, the core rod block 4 and the main shaft of the oil cylinder 10 are driven to perform a reciprocating linear motion in the same direction, so as to drive the core rod 3 to perform an axial reciprocating linear motion in an outward or inward direction.

The sliding block 8 is clamped with the inclined track 7, the core pulling rod 3 is driven to move when the core pulling block 4 moves, and the core pulling rod 3 moves due to the fact that the sliding block 8 is pushed by the inner wall of the inclined track 7 to push the side wall, which is in contact with the inclined track 7, of the inclined track 7 in the moving process.

The utility model discloses a theory of operation is: before the die sinking after the injection moulding operation is completed, the core pulling block 4 is downwards pulled through the starting oil cylinder 10, the inclined track 7 inside the core pulling block 4 moves, so that a sliding block 8 which is positioned in the inclined track 7 and is connected with the inclined track 7 in a clamped mode is driven, namely, the core pulling rod 3 outwards carries out axial motion and gradually moves out of the core pulling track 5, the hole forming circular table 6 is separated from an automobile bumper (product), when the core pulling rod 3 outwards moves to a specified position, the product is subjected to die sinking and demoulding treatment, the die assembly is continued after the operation is completed, the oil cylinder 10 is started, the main shaft of the oil cylinder 10 upwards moves to push the core pulling block 4, the core pulling rod 3 is pushed through the inclined track 7 inside the core pulling block 4 to reset, compared with the traditional processing injection moulding, the complexity of the injection moulding production of the product is reduced, and the.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein will be apparent to those skilled in the art without departing from the spirit of the invention.

Although the terms of the molding cavity 1, the inclined surface step 2, the core pulling rod 3, the core pulling block 4, the core pulling track 5, the hole molding circular truncated cone 6, the inclined track 7, the sliding block 8, the limiting block 9, the oil cylinder 10 and the like are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims (10)

1. The utility model provides a large-scale accurate car bumper tunnel of lightweight mechanism of loosing core, is including being used for shaping chamber (1) that the car bumper was moulded plastics, its characterized in that, shaping chamber (1) in be equipped with inclined plane step (2), the inside of inclined plane step (2) is equipped with core pulling rod (3), inclined plane step (2) are extended to the one end of core pulling rod (3), core pulling rod (3) keep away from the end of shaping chamber (1) on the joint have core pulling block (4), thereby core pulling block (4) can carry out reciprocal linear motion along vertical direction and drive core pulling rod (3) along the reciprocal linear motion of horizontal direction.

2. The tunnel core-pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 1, characterized in that the inclined step (2) is positioned on the inner wall of the molding cavity (1), the end surface of the inclined step (2) far away from the molding cavity (1) is a smooth transition curved surface, and the core-pulling rod (3) is positioned at the center of the end surface of the inclined step (2).

3. The tunnel core pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 2, characterized in that a core pulling track (5) matched with the core pulling rod (3) is arranged inside the inclined step (2), the core pulling rod (3) is positioned in the core pulling track (5), and the tail end of the core pulling rod (3) far away from the core pulling block (4) extends out of one end of the core pulling track (5) far away from the core pulling block (4).

4. The tunnel core pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 3, characterized in that the core pulling track (5) penetrates through the inclined step (2), a hole forming circular truncated cone (6) is arranged on the end surface of the core pulling rod (3) far away from the core pulling block (4), and the hole forming circular truncated cone (6) is positioned outside the core pulling track (5).

5. The tunnel core-pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 4, characterized in that the core-pulling rod (3) is arranged away from the end surface of the core-pulling rod (4) in an inclined way, the hole forming circular table (6) is positioned at the center of the inclined end surface of the core-pulling rod (3), and the end surface of the hole forming circular table (6) is parallel to the inclined end surface of the core-pulling rod (3).

6. The tunnel core-pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 5, characterized in that one side of the core-pulling block (4) close to the core-pulling rod (3) is provided with an inclined track (7) matched with the core-pulling rod (3), the end of the core-pulling rod (3) close to the core-pulling block (4) is positioned in the inclined track (7), and the core-pulling rod (3) can perform reciprocating linear motion in the inclined track (7).

7. The tunnel core-pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 6, characterized in that the inclined track (7) is positioned inside the core-pulling block (4), the end of the core-pulling block (3) close to the core-pulling block (4) is provided with a sliding block (8) matched with the inclined track (7), the sliding block (8) is positioned in the inclined track (7), and the top surface of the sliding block (8) is fixedly connected with a limit block (9).

8. The light-weight large-scale precise automobile bumper tunnel core pulling mechanism according to claim 7, characterized in that the inclined track (7) is arranged from low to high along one side close to the core pulling rod (3) to one side far away from the core pulling rod (3), the sliding block (8) is parallel to the inclined track (7), and the sliding block (8) is in clamping fit with the inclined track (7) so that the sliding block (8) can slide along the inclined track (7).

9. The tunnel core-pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 8, characterized in that the projection of the inclined rail (7) close to the end face of one side of the limiting block (9) is positioned in the limiting block (9), an oil cylinder (10) is fixedly connected below the core-pulling block (4), and when the oil cylinder (10) drives the core-pulling block (4) to do reciprocating linear motion, the core-pulling rod (3) does reciprocating linear motion in the core-pulling rail (5).

10. The tunnel core-pulling mechanism for the light-weight large-scale precise automobile bumper according to claim 9, wherein a main shaft of the oil cylinder (10) is perpendicular to a central shaft of the core-pulling rod (3), and when the main shaft of the oil cylinder (10) axially performs downward or upward reciprocating linear motion, the core-pulling block (4) and the main shaft of the oil cylinder (10) are driven to perform reciprocating linear motion in the same direction, so that the core-pulling rod (3) is driven to perform axial reciprocating linear motion outwards or inwards.

Images