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

Lightweight large precision automobile bumper tunnel core pulling mechanism

technical field

The utility model belongs to the field of injection molds, and relates to a light-weight large-scale precision automobile bumper tunnel core-pulling mechanism.

Background technique

Car bumpers are large-scale products that are injection-molded with injection molds. There is a hole-like structure on the surface of the car bumper. During production, the diameter accuracy of the hole-like structure is required to be high, and special processing of details is required in the production process. , will reduce the production speed, but because the precise production of smaller parts affects the overall work efficiency, resulting in unnecessary waste of production costs.

For example, the Chinese invention patent discloses an injection mold with a front mold tunnel core-pulling mechanism [Application No.: 201510389216.6], which includes a female mold fixing plate, a female mold and an integral male mold, and a gap between the female mold fixing plate and the female mold. A slider 1 and an oblique guide column fixing block are embedded in the middle, and the oblique guide column fixing block is fixedly installed with an oblique guide column that can drive the slider 1 to slide; the injection mold also has two groups of front mold tunnel core pulling mechanisms, each group of front mold The tunnel core-pulling mechanism includes a core-pulling oil cylinder and a core-pulling limit block respectively fixed and installed on the side wall of the die fixing plate, a slanted wedge fixed block fixed on the upper surface of the core-pulling limit block, and a sliding connection on the inclined wedge fixed block. The inclined wedge on the left, the core-pulling connection block slidably connected to the left side of the wedge, and the core-pulling body inserted on the left side of the core-pulling connection block. The core body is driven by the core-pulling oil cylinder to push the slider one in or pull out the slider one. However, in this solution, the hole forming part is exposed, and the forming of the hole structure still requires precise processing, which will reduce the production efficiency of the overall injection molding product.

SUMMARY OF THE INVENTION

The purpose of the utility model is to solve the above problems, and provide a light-weight large-scale precision automobile bumper tunnel core pulling mechanism.

A light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism includes a molding cavity for injection molding of automobile bumpers, wherein the molding cavity is provided with an inclined plane step, and the inside of the inclined plane step is provided with a core-pulling rod. One end extends out of an inclined plane step, and the end of the core-pulling rod away from the molding cavity is clamped with a core-pulling block, which can reciprocate linearly in the vertical direction to drive the core-pulling rod to reciprocate linearly in the horizontal direction.

In the above-mentioned lightweight large-scale precision automobile bumper tunnel core pulling mechanism, the inclined plane step is located on the inner wall of the molding cavity, the end face of the inclined plane step away from the molding cavity is a smooth transition surface, and the core pulling rod is located at the center of the end face of the inclined plane step. place.

In the above-mentioned light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism, a core-pulling track matched with the core-pulling rod is arranged inside the inclined plane step, the core-pulling rod is located in the core-pulling track, and the core-pulling rod is far away from the core-pulling rod. The end of the block extends beyond the end of the core-pulling track away from the core-pulling block.

In the above-mentioned light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism, the core-pulling track runs through the inclined plane steps, and the end face of the core-pulling rod away from the core-pulling block is provided with a hole-forming circular platform, and the hole-forming circular platform is located outside the core-pulling track. .

In the above-mentioned light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism, the core-pulling rod is disposed obliquely away from the end face of the core-pulling block, the hole forming circular platform is located at the center of the inclined end face of the core-pulling rod, and the hole forming The end face of the round table is parallel to the inclined end face of the core pulling rod.

In the above-mentioned lightweight and large-scale precision automobile bumper tunnel core-pulling mechanism, the side of the core-pulling block close to the core-pulling rod is provided with an inclined track that matches the core-pulling rod, and the core-pulling rod is close to the end of the core-pulling block. Located in the inclined track, the core pulling rod can perform reciprocating linear motion in the inclined track.

In the above-mentioned light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism, the inclined track is located inside the core-pulling block, and the end of the core-pulling rod close to the core-pulling block is provided with a sliding block suitable for the inclined track, and the sliding block is located on the inclined track. inside, and the top surface of the sliding block is fixedly connected with a limiting block.

In the above-mentioned light-weight large-scale precision automobile bumper tunnel core-pulling mechanism, the inclined track is inclined from low to high along the side close to the core-pulling rod and the side away from the core-pulling rod, and the sliding block and the inclined rail are parallel to each other, The sliding block is snap-fitted with the inclined rail so that the sliding block can slide along the inclined rail.

In the above-mentioned light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism, the projection of the end face of the inclined track near the limit block is located in the limit block, and an oil cylinder is fixedly connected to the bottom of the core-pulling block. When the core block performs a reciprocating linear motion, the core-pulling rod performs a reciprocating linear motion in the core-pulling track.

In the above-mentioned light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism, the main shaft of the oil cylinder and the central axis of the core-pulling rod are perpendicular to each other. The core block and the main shaft of the oil cylinder perform reciprocating linear motion in the same direction, thereby driving the core pulling rod to perform axial reciprocating linear motion outward or inward.

Compared with the existing technology, the advantages of the present utility model are:

1. The inclined plane steps are hidden inside the molding cavity, and the hole forming part is set on the core-pulling rod. Before the injection molding of the product is opened, the core-pulling rod is driven to move by the movement of the core-pulling block, leaving a hole on the surface of the car bumper. Compared with traditional processing and injection molding, the molding hole conforming to the machining accuracy reduces the complexity of product injection molding production and improves production efficiency.

2. The limit block is located at the top of the inclined track. During the movement of the core-pulling block, the sliding block always slides inside the inclined track. The limit block restricts the sliding block from moving away from the inclined track to avoid the failure of the core-pulling rod to reset.

Other advantages, objects, and features of the present invention will be manifested in part by the description below, and in part will be understood by those skilled in the art from the study and practice of the present invention.

Description of drawings

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

Figure 2 is a schematic diagram of a core pulling rod.

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

FIG. 4 is an enlarged view of A in FIG. 1 .

In the figure: molding cavity 1, inclined plane step 2, core pulling rod 3, core pulling block 4, core pulling track 5, hole forming round table 6, inclined track 7, sliding block 8, limit block 9, oil cylinder 10.

Detailed ways

The present utility model will be further described below in conjunction with the accompanying drawings.

As shown in FIG. 4 , a light-weight and large-scale precision automobile bumper tunnel core-pulling mechanism includes a molding cavity 1 for injection molding of automobile bumpers. A core-pulling rod 3 is provided, one end of the core-pulling rod 3 extends out of the inclined plane step 2, and a core-pulling block 4 is clamped on the end of the core-pulling rod 3 away from the molding cavity 1, and the core-pulling block 4 can be along the vertical direction. The reciprocating linear motion is performed to drive the core pulling rod 3 to reciprocate linearly in the horizontal direction.

Car bumpers are large-scale products that are injection-molded with injection molds. There is a hole-like structure on the surface of the car bumper. During production, the diameter accuracy of the hole-like structure is required to be high, and special processing of details is required in the production process. , thereby reducing the production speed. In this scheme, the inclined plane step 2 is hidden inside the molding cavity 1, and the hole forming part is set on the core pulling rod 3. Before the injection molding of the product is opened, it is driven by the movement of the core pulling block 4. The core-pulling rod 3 moves, leaving a molding hole on the surface of the automobile bumper that meets the machining accuracy. Compared with traditional machining and injection molding, the complexity of product injection molding production is reduced and the production efficiency is improved.

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

The inclined plane step 2 is located inside the molding cavity 1. Compared with the traditional bumper injection mold, the slider parting line is located on the inner wall of the molding cavity 1, which improves the aesthetics of the product and essentially improves the quality of the product.

As shown in FIG. 4 , in the present embodiment, a core-pulling rail 5 that matches the core-pulling rod 3 is provided inside the inclined plane step 2 , the core-pulling rod 3 is located in the core-pulling rail 5 , and the core-pulling rod 3 is far away from The end of the core-pulling block 4 extends out of the end of the core-pulling track 5 away from the core-pulling block 4 .

The core-pulling rod 3 extends out of the core-pulling track 5 for injection molding, which solves the problem that the parting line of the slider on the original surface of the product is exposed, and improves the accuracy of the finished product surface while improving the accuracy of the hole-like structure of the finished product.

As shown in FIG. 4 , in this embodiment, the core-pulling track 5 penetrates the inclined plane step 2 , and the end face of the core-pulling rod 3 away from the core-pulling block 4 is provided with a hole forming round table 6 , and the hole forming round table 6 is located in the core pulling track 5 outside.

The hole forming round table 6 is located on the end face of the core pulling rod 3, and the hole forming round table 6 extends out of the core pulling rail 5 for injection molding. Compared with the traditional injection molding and then punching the hole structure, the injection molding production is improved. The processing efficiency is improved, and the accuracy of the hole position is also improved.

As shown in FIG. 4 , in this embodiment, the core-pulling rod 3 is disposed obliquely away from the end face of the core-pulling block 4 , the hole forming circular platform 6 is located at the center of the inclined end face of the core-pulling rod 3 , and the hole forming The end face of the circular table 6 is parallel to the inclined end face of the core pulling rod 3 .

The end face of the hole forming round table 6 is determined by the inclination of the core-pulling rod 3. When the hole-shaped structure is formed and the core-pulling operation is completed, the hole-shaped structure that has completed the forming operation is prevented from being damaged.

As shown in FIG. 1 , in this embodiment, the side of the core-pulling block 4 close to the core-pulling rod 3 is provided with an inclined track 7 that matches the core-pulling rod 3 , and the core-pulling rod 3 is close to the core-pulling block 4 The end of the rod is located in the inclined rail 7, and the core pulling rod 3 can perform reciprocating linear motion in the inclined rail 7.

The core-pulling block 4 is clamped with the core-pulling rod 3. In fact, the inclined rail 7 and the core-pulling rod 3 are clamped to each other. When the core-pulling block 4 moves, the position of the inclined rail 7 changes, which drives the core-pulling rod 3. Horizontal movement occurs.

As shown in Figure 3 and Figure 4, in the present embodiment, the inclined rail 7 is located inside the core pulling block 4, and the end of the core pulling rod 3 close to the core pulling block 4 is provided with a sliding block 8 that matches the inclined rail 7, The sliding block 8 is located in the inclined track 7 , and the top surface of the sliding block 8 is fixedly connected with the limiting block 9 .

The limit block 9 is located at the top of the inclined track 7. During the movement of the core pulling block 4, the sliding block 8 always slides inside the inclined track 7. The limit block 9 restricts the sliding block 8 from moving away from the inclined track 7 to avoid The core pulling rod 3 failed to reset.

As shown in FIG. 4 , in this embodiment, the inclined rail 7 is inclined from low to high along the side close to the core pulling rod 3 and the side away from the core pulling rod 3 , and the sliding block 8 and the inclined rail 7 are parallel to each other. , the sliding block 8 is snap-fitted 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 rail 7. When the core pulling block 4 is driven downward by the main shaft of the oil cylinder 10, the inclined rail 7 moves, which drives the sliding block 8 to move outward, thereby driving the core pulling rod 3 to slide.

As shown in FIG. 1 , in this embodiment, the projection of the end face of the inclined track 7 close to the limit block 9 is located in the limit block 9 , and the oil cylinder 10 is fixedly connected to the bottom of the core pulling block 4 . When the oil cylinder 10 When the core-pulling block 4 is driven to perform a reciprocating linear motion, the core-pulling rod 3 performs a reciprocating linear motion in the core-pulling track 5 .

The inclined track 7 runs through the core-pulling block 4, but the sliding distance of the sliding block 8 in the inclined track 7 is determined by the main shaft of the oil cylinder 10 and the core-pulling block 4. Therefore, when defining the movement trajectory of the sliding block 8, the two should be distances are taken into account.

As shown in Figures 1 and 4, in this embodiment, the main shaft of the oil cylinder 10 and the central axis of the core pulling rod 3 are perpendicular to each other. When the main shaft of the oil cylinder 10 performs a downward or upward reciprocating linear motion in the axial direction, 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, thereby driving the core-pulling rod 3 to perform axial reciprocating linear motion outward or inward.

The sliding block 8 is clamped with the inclined rail 7, and when the core pulling block 4 moves, the core pulling rod 3 is driven to move, because the sliding block 8 is pushed into contact with the inclined rail 7 through its inner wall during the movement of the inclined rail 7. The side walls allow the core pulling rod 3 to move.

The working principle of the present invention is as follows: before the mold is opened after the injection molding operation is completed, the core-pulling block 4 is pulled downward by activating the oil cylinder 10, and the inclined track 7 inside the core-pulling block 4 moves, thereby driving the core-pulling block 7 located in the inclined track 7 and moving. The sliding block 8 that is clamped with the inclined track 7, that is, the described core pulling rod 3 moves axially outward and gradually moves out of the core pulling track 5, and the described hole forming round table 6 is separated from the automobile bumper (product), and when the core pulling rod 3 is pulled out. When the core rod 3 moves outward to the designated position, the product is opened and demolded. After the operation is completed, the mold is continued to be closed, and the cylinder 10 is activated. 4. The inner inclined track 7 pushes the core pulling rod 3 to reset, which reduces the complexity of product injection molding production and improves the production efficiency compared with traditional processing and injection molding.

The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or additions to the specific embodiments described or substitute in similar manners, but will not deviate from the spirit of the present invention.

Although this article uses more molding cavity 1, inclined plane step 2, core pulling rod 3, core pulling block 4, core pulling track 5, hole forming round table 6, inclined track 7, sliding block 8, limit block 9, oil cylinder 10, etc. terms, but does not exclude the possibility of using other terms. These terms are only used to describe and explain the essence of the present invention more conveniently, and it is contrary to the spirit of the present invention to interpret them as any kind of additional limitations.

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.

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