Forming die for bumper processing

Abstract

The utility model relates to the field of bumper processing, in particular to a forming die for bumper processing, which is characterized in that a cavity is arranged in the middle of a female die mechanism, a plurality of demolding grooves are arranged on the inner wall of the cavity, demolding plates are mounted in the demolding grooves in a matched manner, the demolding plates are connected with connecting columns through demolding rods, and the connecting columns are connected with the demolding rods through buffer springs. The supporting plate is connected with the telescopic end of the air cylinder piece, and the supporting plate and the telescopic end of the air cylinder piece are jointly installed in the female die mechanism. According to the utility model, the supporting plate is driven to move by the air cylinder piece, the supporting plate applies a small acting force to the demolding plate through the buffer spring so as to apply a front-section demolding acting force to the injection molding piece, the front section of the mounting groove is exposed out of the demolding groove, the air nozzle conveys air into the cavity so as to assist the demolding of the injection molding piece, and the stroke is finished along with the demolding plate; the injection molding part is completely ejected out and demoulded by the demoulding plate, so that the stability and the stress uniformity in the demoulding process can be effectively improved, and the demoulding efficiency is ensured by the aid of the air tap for assisting in demoulding.

Description

TECHNICAL FIELD

[0001] The utility model relates to bumper processing technical field especially relates to a forming die of bumper processing. BACKGROUND

[0002] The bumper is an important part of the automobile body, which is located at the front and rear of the vehicle. The bumper not only has a decorative function, but also absorbs and mitigates the impact force from the outside world and protects the front and rear of the vehicle. With the development of the automobile industry, the bumper is now made of plastic through injection molding.

[0003] The bumper is designed to be curved and arc-shaped to match different vehicle models. However, some traditional forming dies directly eject the molded parts using a ejector rod after injection molding. At this time, the temperature of the molded part is high, and the direct contact pressure on the surface of the molded part is large, which may cause damage to the molded part. Therefore, there is an urgent need for a forming die for bumper processing. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the shortcomings in the prior art and provides a forming die for bumper processing.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A forming die for bumper processing includes a female die mechanism and a male die mechanism. The middle part of the female die mechanism is provided with a cavity, and the inner wall of the cavity is provided with a plurality of demolding grooves. A demolding plate is installed in the demolding groove. The demolding plate is connected by a demolding rod and a connecting column. The connecting column and the demolding rod are connected by a buffer spring. The connecting column is installed on a support plate. The support plate is connected with the extension end of a cylinder. They are installed in the female die mechanism.

[0007] The female die mechanism and the male die mechanism are matched to form an injection mold as a whole.

[0008] In addition, the inner wall of the cavity is preferably symmetrically provided with a plurality of demolding grooves in a rectangular shape. The demolding grooves correspond to the corner positions of the injection molded part. A single demolding groove is provided in the middle part of the cavity to correspond to the center position of the injection molded part.

[0009] In addition, a sealing element is provided between the demolding groove and the demolding plate.

[0010] In addition, an installation groove is provided on both sides of the outer wall of each demolding plate. A gas nozzle is installed on one side of the inner wall of the installation groove. The gas inlet end of the gas nozzle is connected with a gas pipe. The gas pipe is installed in the demolding plate. The gas inlet pipe of the gas pipe is connected with an external air pump.

[0011] Furthermore, preferably, a plurality of connecting columns are mounted on one side of the support plate, a limiting rod is mounted in the middle of the connecting columns, a limiting block is mounted on one end of the limiting rod and extends into a limiting slot formed in the demolding rod, and the limiting slot and the limiting block are matched to limit the limiting rod.

[0012] Furthermore, preferably, the mounting slot is open at one end of the support plate and closed at the other end, a gas nozzle is arranged at one position of the closed end, and a distance of 2CM is left between the closed end and the outer wall of the demolding plate.

[0013] The utility model discloses beneficial effects are:

[0014] In the utility model, the support plate is moved by the cylinder piece, and the demolding plate is driven to exert a front demolding force on the injection molding piece in the moving process of the support plate by the buffer spring, the front section of the mounting slot is exposed from the demolding slot, and the gas is delivered into the cavity by the gas nozzle to assist the demolding of the injection molding piece, and the injection molding piece is completely ejected from the demolding plate after the demolding plate completes the stroke, and compared with the traditional ejector rod demolding, the stability and stress uniformity of the demolding process can be effectively improved, and the demolding efficiency is ensured by the auxiliary demolding of the gas nozzle. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a recess die mechanism external structure schematic drawing of the forming die for bumper processing that the utility model proposes;

[0016] Figure 2 It is a whole structure schematic drawing of the forming die that the utility model proposes;

[0017] Figure 3 It is a recess die mechanism internal structure schematic drawing that the utility model proposes;

[0018] Figure 4 It is a demolding plate connecting structure schematic drawing that the utility model proposes;

[0019] Figure 5 It is a demolding rod internal structure schematic drawing that the utility model proposes;

[0020] Figure 6 It is a gas nozzle mounting structure schematic drawing that the utility model proposes.

[0021] In the drawing: 1 recess die mechanism, 2 cavity, 21 demolding slot, 3 demolding plate, 31 demolding rod, 4 male die mechanism, 5 cylinder piece, 6 support plate, 7 connecting column, 8 buffer spring, 9 mounting slot, 10 gas nozzle, 11 limiting rod, 111 limiting block, 12 gas pipe, 13 limiting slot. DETAILED DESCRIPTION

[0022] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, apparently, the described embodiment is only a part of the embodiment of the utility model, and is not all the embodiment.

[0023] Referring to Figures 1-6 A bumper processing forming die, comprising a female die mechanism 1, a male die mechanism 4, the middle part of the female die mechanism 1 is provided with a cavity 2, the inner wall of the cavity 2 is provided with a plurality of demolding grooves 21, the demolding plate 3 is installed in the demolding groove 21 in a matching mode, the demolding plate 3 is connected by the demolding rod 31 and the connecting column 7, the connecting column 7 and the demolding rod 31 are connected through the buffer spring 8, the connecting column 7 is installed on the supporting plate 6, the supporting plate 6 is connected with the telescopic end of the cylinder piece 5, and is jointly installed in the female die mechanism 1.

[0024] Further, the female die mechanism 1 and the male die mechanism 4 are matched to form an injection mold as a whole.

[0025] Further, the inner wall of the cavity 2 is symmetrically provided with a plurality of demolding grooves 21 in a rectangular shape, which correspond to the corner positions of the injection molded part respectively, and a single demolding groove 21 is arranged in the middle part of the cavity 2 to correspond to the center position of the injection molded part.

[0026] Further, a sealing element is arranged between the demolding groove 21 and the demolding plate 3, thereby ensuring the stability of the injection molding process.

[0027] Further, the outer wall of each demolding plate 3 is provided with an installation groove 9 on both sides, a gas nozzle 10 is installed on one side of the inner wall of the installation groove 9, the gas inlet end of the gas nozzle 10 is connected with a gas pipe 12, the gas pipe 12 is installed in the demolding plate 3, and the gas inlet pipe of the gas pipe 12 is connected with an external air pump.

[0028] Further, a plurality of connecting columns 7 are installed on one side of the supporting plate 6, a limiting rod 11 is installed in the middle part of the connecting column 7, a limiting block 111 is installed at one end of the limiting rod 11 and extends into a limiting groove 13 arranged in the demolding rod 31, and the limiting groove 13 and the limiting block 111 are matched to limit the limiting rod 11.

[0029] Further, one end of the installation groove 9 towards the supporting plate 6 is open, and the other end is closed, the closed end is provided with a gas nozzle 10, and a distance of 2CM is left between the closed end and the outer wall of the demolding plate 3, in the moving process of the demolding plate 3, the gas nozzle 10 at the closed end will first expose the demolding groove 21, and the gas will be delivered into the cavity.

[0030] In the embodiment, the mold closing operation is completed by the combination of the punch mechanism 4 and the die mechanism 1, the cylinder 7 inside the die mechanism 1 is extended to drive the support plate 6 to move, the support plate 6 applies a force to the stripper plate 3 through the buffer spring 8, the force applied to the stripper plate 3 by the support plate 6 is reduced due to the compression deformation of the buffer spring 8, at this time, the stripper plate 3 is slightly displaced under the action of the spring compression support, and the injection molding part in the cavity 2 is pressed, at this time, the injection molding part is gradually separated from the surface of the cavity 2 under the influence of the pressing, at this time, when the displacement reaches one end distance, the air nozzle 10 arranged on the outer wall of the stripper plate 3 is exposed from the demolding groove 21, and under the action of the external air pump, the gas is pumped from the air pipe 12 to the air nozzle 10, and the air nozzle 10 delivers the gas to the cavity to fill the gap between the injection molding part and the cavity 2, at this time, the gas can accelerate the cooling and demolding efficiency of the injection molding part, and at the same time, under the continuous extension of the cylinder 5, the connecting column 7 directly contacts with the demolding rod 31, and drives the stripper plate 3 to move greatly, so as to press and demold the injection molding part.

[0031] In actual application, the die mechanism 1 and the punch mechanism 4 are assembled and controlled by the injection molding mechanism, the punch mechanism 4 is controlled by the injection molding mechanism to realize the mold closing operation of the die mechanism 1, the injection molding process is completed by the punch mechanism 4, and the molding and demolding process is completed by the die mechanism 1, and the specific operation principle and process have been the prior art, and will not be described here.

[0032] In actual application, the position of each demolding groove 21 corresponds to the four corners and the center position of the injection molding part, so that the injection molding part can be effectively and uniformly applied with the force, and the stripper plate 3 installed in each demolding groove 21 is flush with the groove body in the natural state.

[0033] In the utility model, the cylinder 5 drives the support plate 6 to move, the support plate applies a small force to the stripper plate 3 in the moving process through the buffer spring 8, so as to drive the stripper plate 3 to apply a front demolding force to the injection molding part, and make the front of the mounting groove 9 expose the demolding groove 21, and the air nozzle 10 delivers the gas to the cavity to assist the demolding of the injection molding part, and when the stripper plate 3 completes the stroke, the injection molding part is completely ejected from the stripper plate 3, and compared with the traditional ejector rod demolding, the stability and stress uniformity of the demolding process can be effectively improved, and the demolding efficiency is ensured by the air nozzle assisted demolding.

[0034] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any person skilled in the art in the technical range disclosed by the utility model, according to the technical scheme and the utility model concept of the utility model, equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. A forming die for bumper processing, comprising a female die mechanism (1), a male die mechanism (4), characterized in that, The middle part of the concave die mechanism (1) is provided with a cavity (2), the inner wall of the cavity (2) is provided with a plurality of demolding grooves (21), the demolding grooves (21) are fitted and mounted with demolding plates (3), the demolding plates (3) are connected with the connecting columns (7) through the demolding rods (31), the connecting columns (7) and the demolding rods (31) are connected through the buffer springs (8), the connecting columns (7) are mounted on the supporting plates (6), the supporting plates (6) are connected with the telescopic ends of the cylinder pieces (5), and the supporting plates (6) and the cylinder pieces (5) are jointly mounted in the concave die mechanism (1). The concave die mechanism (1) and the convex die mechanism (4) are fitted to form an injection mold as a whole.

2. A bumper processing forming die according to claim 1, wherein The inner wall of the cavity (2) is symmetrically provided with a plurality of demolding grooves (21) in a rectangular shape, which correspond to the corner positions of the injection molded parts respectively, and a single demolding groove (21) is arranged in the middle part of the cavity (2) to correspond to the center position of the injection molded part.

3. The bumper processing forming die according to claim 1, wherein Sealing pieces are arranged between the demolding grooves (21) and the demolding plates (3).

4. The bumper processing forming die according to claim 1, wherein An installation groove (9) is arranged on each side of the outer wall of the demolding plate (3), a gas nozzle (10) is mounted on one side of the inner wall of the installation groove (9), the gas inlet end of the gas nozzle (10) is connected with a gas pipe (12), the gas pipe (12) is mounted in the demolding plate (3), and the gas inlet pipe of the gas pipe (12) is connected with an external air pump.

5. The bumper processing forming die according to claim 1, wherein A plurality of connecting columns (7) are mounted on one side of the supporting plate (6), a limiting rod (11) is mounted in the middle part of the connecting column (7), a limiting block (111) is mounted at one end of the limiting rod (11) and extends into a limiting groove (13) arranged in the demolding rod (31), and the limiting groove (13) and the limiting block (111) are fitted to limit the limiting rod (11).

6. A bumper processing forming die according to claim 4, wherein One end of the installation groove (9) is open towards the supporting plate (6), and the other end is closed, a gas nozzle (10) is arranged at one position of the closed end, and a distance of 2CM is left between the closed end and the outer wall of the demolding plate (3).

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