Sprue structure of plastic tail door inner plate injection mold

Abstract

The utility model relates to a sprue structure of a plastic tail door inner plate injection mold, which comprises two side sprues and eight columnar sprues, the two side sprues and the eight columnar sprues are mounted on the plastic tail door inner plate injection mold, and the two side sprues are mounted on two sides of a tail door product hinge of the plastic tail door inner plate injection mold. The eight columnar sprues are uniformly distributed at a tail door product lower cover plate of the plastic tail door inner plate injection mold; the side pouring gate comprises a pouring runner and a pouring gate communicated with the pouring runner, and the columnar pouring gate comprises a columnar pouring gate body, a head end located at one end of the columnar pouring gate body and a root end located at the other end of the columnar pouring gate body; the plastic tail door inner plate has the advantages that the columnar sprues and the side sprues are combined, the problem that injection molding of a product is difficult is solved, the product appearance problem of the plastic tail door inner plate is solved, the appearance of the plastic tail door inner plate is not affected after the sprues are removed, the plastic tail door inner plate is not exposed after an assembly is assembled, the size of the product is convenient to adjust, and the strength requirement of glass fibers is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile plastic tailgate, especially to a gate structure of plastic tailgate inner plate injection mold. BACKGROUND

[0002] Now, the gate of the injection mold is divided into side gate, point gate and submarine gate according to the structure and size of different products, and the filling state, pressure distribution and deformation of the injection product can be simulated more accurately through mold flow analysis, and the solution to the corresponding problems can be made in advance.

[0003] At present, the raw material of the product is combined PP material + LGF40 long glass fiber material, and the pre-deformation uncertainty of the glass fiber injection part is caused by the different arrangement modes of the LGF40 long glass fiber material in the injection molding, which is a major problem of the inner plate mold opening. INVENTION CONTENTS

[0004] In view of the above problems, the utility model provides a gate structure of plastic tailgate inner plate injection mold, which combines the columnar gate and side gate, solves the problems of product injection molding and appearance, and overcomes the shortcomings of the prior art.

[0005] The utility model provides a gate structure of plastic tailgate inner plate injection mold, which includes two side gates and eight columnar gates installed on the plastic tailgate inner plate injection mold, the two side gates are installed on both sides of the tailgate product hinge of the plastic tailgate inner plate injection mold, and the eight columnar gates are evenly arranged at the lower cover plate of the tailgate product of the plastic tailgate inner plate injection mold.

[0006] The side gate includes a pouring runner and a pouring gate in communication with the pouring runner, the pouring runner is vertically arranged with the pouring gate, the inlet end diameter of the pouring runner is 8mm, the pouring gate is composed of an integral connecting section and a bending section, the connecting section is in communication with the pouring runner, and a glue outlet is formed in the bending section.

[0007] The columnar gate includes a columnar gate body, a head end at one end of the columnar gate body and a root end at the other end of the columnar gate body, the head end is located at the TOP head side of the hot nozzle, the diameter of the head end is 8mm, the root end is located at the product contact side, and the diameter of the root end is 10mm.

[0008] As a preferred embodiment of the utility model, the side gate feeds from the bottom side of the tailgate product hinge, the glue outlet of the side gate is located at the tailgate product hinge and extends laterally by 2mm along the direction of the flange to prevent exposure after assembly.

[0009] The utility model discloses the beneficial effects as follows:

[0010] 1, the utility model discloses a combination of the form of columnar gate and side gate, both solve the product injection molding difficult problem, and also solve the product appearance problem, and the product appearance is not affected after gate removal not exposed plastic tailgate inner plate, assembly is not exposed, convenient product size adjustment and satisfy the strength requirement of glass fiber.

[0011] 2, the utility model discloses two side gates in tailgate product hinge place nearby, guarantee the size adjustment here, adjust the size of tailgate glass two sides through sequence valve opening position and pressure -holding time, in order to facilitate personnel to take out operation, adopt the bottom side of the inlay glue, and there is no exposed problem after removal product matching.

[0012] 3, the utility model discloses eight columnar gates in tailgate product lower cover plate place, and columnar gate guarantees that glass fiber flows more smoothly, reduces injection pressure, thereby reduces product injection internal stress, prevents the deformation problem of product after forming due to internal stress being too big. BRIEF DESCRIPTION OF DRAWINGS

[0013] Other purposes and results of the utility model will be more obvious and easy to understand by referring to the following description combining with the drawings and along with the more comprehensive understanding of the utility model. In the drawings:

[0014] Fig. 1 It is the plastic tailgate inner plate injection mold structure schematic diagram of this embodiment.

[0015] Fig. 2 It is the side gate structure schematic diagram of this embodiment.

[0016] Fig. 3 It is the columnar gate structure schematic diagram of this embodiment.

[0017] The reference signs in it include: plastic tailgate inner plate injection mold 1, side gate 2, pouring runner 201, pouring gate 202, columnar gate 3. DETAILED DESCRIPTION

[0018] Reference Figs. 1-3As shown, the gate structure of the plastic tailgate inner plate injection mold provided by the embodiment comprises two side gates 2 and eight columnar gates 3 installed on the plastic tailgate inner plate injection mold 1, the two side gates 2 are installed at the both sides of the tailgate product hinge of the plastic tailgate inner plate injection mold 1, and the eight columnar gates 3 are evenly arranged at the lower cover plate of the tailgate product of the plastic tailgate inner plate injection mold 1; the side gate 2 comprises a pouring runner 201 and a pouring gate 202 in communication with the pouring runner 201, the pouring runner 201 is vertically arranged with the pouring gate 202, the inlet end of the pouring runner 201 is 8mm in diameter, the pouring gate 202 is composed of an integral connecting section and a bending section, the connecting section is in communication with the pouring runner 201, and a glue outlet is arranged on the bending section; the side gate 2 feeds glue from the bottom side of the tailgate product hinge, the glue outlet of the side gate 2 is located at the tailgate product hinge and extends 2mm laterally along the direction of the turn-up edge to prevent exposure after assembly. The columnar gate 3 comprises a columnar gate body, a head end at one end of the columnar gate body and a root end at the other end of the columnar gate body, the head end is located at the TOP head side of the hot nozzle, the diameter of the head end is 8mm, the root end is located at the product contact side, and the diameter of the root end is 10mm.

[0019] Working principle: The gate form of the plastic tailgate mainly comprises the combination of the side gate 2 and the columnar gate 3. The side gate 2 is 2, which is arranged near the tailgate product hinge to ensure the size adjustment, the size of the two sides of the tailgate glass is adjusted through the opening position and the pressure maintaining time of the sequence valve, the bottom side feeding glue is adopted to facilitate personnel to remove and operate, and the product matching has no exposure problem after removal. The size of the side gate is 10mm in width and 2mm in thickness; the side gate extends 2mm in the product turn-up edge direction to prevent exposure after assembly. The columnar gate is 8, which is arranged at the lower cover plate of the tailgate product, the columnar gate ensures the smooth flow of the glass fiber, reduces the injection pressure, thereby reducing the product injection internal stress, preventing the deformation problem caused by the excessive internal stress after the product is formed, and the personnel need to use flat-nose pliers to cut the columnar gate during the removal operation, because the gate position is designed to be assembled to cover the place, 1mm of residue does not affect the assembly matching, so the assembly interference risk caused by the removal residue is reduced. The size of the columnar gate is that the diameter of the columnar gate and the TOP head of the hot nozzle is 8mm, the diameter of the root of the columnar gate in contact with the product is 10mm, and the length of the columnar gate is 50mm.

[0020] The above is only a specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the technical field can easily think of changes or replacements within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model. Therefore, the protection scope of the utility model should be subject to the protection scope of the claims.

Claims

1. A gate structure of a plastic tailgate inner panel injection mold, characterized by, The utility model relates to a two-side gate and eight columnar gates installed on a plastic tail door inner plate injection mold, two side gates are installed on both sides of the tail door product hinge of the plastic tail door inner plate injection mold, and eight columnar gates are evenly arranged at the tail door product lower cover plate of the plastic tail door inner plate injection mold. The side gate comprises a pouring runner and a pouring port in communication with the pouring runner, the pouring runner is vertically arranged with the pouring port, the inlet end diameter of the pouring runner is 8mm, the pouring port is composed of an integral connecting section and a bending section, the connecting section is in communication with the pouring runner, and a glue outlet is formed in the bending section. The columnar gate comprises a columnar gate body, a head end at one end of the columnar gate body and a root end at the other end of the columnar gate body, the head end is located at the TOP head side of the hot nozzle, the diameter of the head end is 8mm, the root end is located at the product contact side, and the diameter of the root end is 10mm. The side gate feeds glue from the bottom side of the tail door product hinge, the glue outlet of the side gate is located at the tail door product hinge and extends 2mm laterally along the flanging direction, so that the glue is prevented from being exposed after assembly.

2. The gate structure of the injection mold for the inner plate of the plastic tailgate according to claim 1, wherein ​

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