CN214163948U - TPV holding strip extrusion die structure - Google Patents

Abstract

The utility model discloses a bush structure is extruded to TPV holding strip, including the fixed first mouth template together of coincide in proper order, the second mouth template, the third mouth template, flow distribution plate and fixed plate, all set up the die cavity of mutual intercommunication on first mouth template, the second mouth template, the third mouth template, and die cavity one side of second mouth template is provided with supplementary runner, set up the fuse-element pond with first mouth template intercommunication on the flow distribution plate, fixedly connected with skeleton location core on the fixed plate, the guiding hole has been seted up at the center of skeleton location core, the sprue has been seted up in the bilateral symmetry of skeleton location core. The utility model adopts the matching of a plurality of plate mouth shapes and two feed inlets, one feed inlet controls the feeding of the appearance part of the product, each section of cavity gradually decreases, the back pressure of the mouth shape inlet is increased, and the rough, the lines and the melt fracture of the appearance surface of the product are reduced; the other feed inlet controls the feeding of the lip part, and the length and the size of the lip of the product are controlled by independently adjusting the feeding amount of the lip part.

Description

TPV holding strip extrusion die structure

Technical Field

The utility model relates to a TPV holding strip extrusion die structure belongs to the automobile product and makes technical field.

Background

The existing TPV holding strip extrusion mouth-shaped structure has the following problems: (1) TPV materials required by the cavity are only provided with one feeding hole, the feeding pressure is not easy to control, the surface of a product is easy to generate melt fracture or lines, the surface is rough, the melt fractures, and the length dimension of the lip edge of the product is unstable; (2) the TPV glue stock is cut in at an angle of 90 degrees without a melt pool with equal wall thickness, the balance of the coating pressure at two sides of the steel strip is not easy to adjust, and the position of the framework can be determined only by repeated trial and error during production so as to ensure that the framework is completely coated by the TPV.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, debugging convenience, product shaping high quality, the be convenient for maintenance TPV holding strip extrude bush structure to overcome not enough among the prior art and disappearance.

The technical scheme of the utility model: the utility model provides a TPV holding strip extrusion die structure, including the fixed first mouth template together of coincide in proper order, the second mouth template, the third mouth template, flow distribution plate and fixed plate, at first mouth template, the second mouth template, the die cavity of mutual intercommunication is all seted up on the third mouth template, and die cavity one side of second mouth template is provided with supplementary runner, set up the fuse-element pond with first mouth template intercommunication on the flow distribution plate, fixedly connected with skeleton location core on the fixed plate, the guiding hole has been seted up at the center of skeleton location core, the sprue has been seted up at the bilateral symmetry of skeleton location core.

Further, the framework positioning core extends into the cavity of the first template.

Further, the melt pool is of a conical structure.

Since the technical scheme is used, the utility model has the advantages of:

(1) the multi-plate mouth shape matching is adopted, two feeding holes are adopted, one feeding hole controls the feeding of the appearance part of the product, each section of cavity gradually decreases, the back pressure of the mouth shape inlet is increased, and the rough surface, lines and melt fracture of the appearance surface of the product are reduced; the other feed inlet controls the feeding of the lip part, and the length and the size of the lip of the product are controlled by independently adjusting the feeding amount of the lip part;

(2) the melt pool with the same wall thickness is adopted to ensure that the glue is uniformly fed around the framework, the cut-in angle of the framework coated by the glue material is reduced, the design of the converging section coated by the glue material is increased, the consistency of the glue fed into the two sides of the framework is ensured, the pressure difference between the two sides is reduced, and the position of the framework is determined without repeated trial and error during production.

Drawings

Fig. 1 is a sectional view of a schematic structural view of the present invention;

FIG. 2 is a schematic view of a cavity configuration of a first bite plate;

FIG. 3 is a schematic view of a cavity structure of a second die plate;

FIG. 4 is a schematic view of a cavity structure of a third die plate;

FIG. 5 is a schematic structural diagram of a TPV holding strip in the example.

Description of reference numerals: 1-a first mouth plate, 2-a second mouth plate, 3-a third mouth plate, 4-a splitter plate, 5-a fixing plate, 6-a framework positioning core, 7-an auxiliary flow channel, 8-a melt pool, 9-a guide hole and 10-a main flow channel.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention is further described in detail with reference to the accompanying drawings and examples.

The embodiment of the utility model provides a: the structure schematic diagram of TPV holding strip extrusion die structure is shown in fig. 1 ~ 4, including coincide fixed first oral cavity board 1 together in proper order, second oral cavity board 2, third oral cavity board 3, flow distribution plate 4 and fixed plate 5, at first oral cavity board 1, second oral cavity board 2, the die cavity of mutual intercommunication is all seted up on the third oral cavity board 3, and die cavity one side of second oral cavity board 2 is provided with auxiliary flow channel 7, set up the fuse-element pond 8 with first oral cavity board 1 intercommunication on flow distribution plate 4, fixedly connected with skeleton location core 6 on fixed plate 5, guiding hole 9 has been seted up at the center of skeleton location core 6, main flow channel 10 has been seted up in the bilateral symmetry of skeleton location core 6. The framework positioning core 6 extends into the cavity of the first template 1. The melt pool 8 is of a conical structure.

Referring to fig. 5, a schematic structural view of the TPV clip of the present embodiment is shown in fig. 5, and the TPV clip is composed of a design portion 11 and a lip portion 12, and a carcass 13 is embedded in the design portion 11. When the TPV holding strip extrusion die structure of the utility model is adopted to produce the product, firstly, the framework 13 is guided into the extrusion die through the guide hole 9 on the framework positioning core 6, then two feed inlets of the main runner 10 and the auxiliary runner 7 are adopted for feeding, one feed inlet controls the feeding of the appearance part of the product, each section of cavity gradually decreases, the back pressure of the inlet of the die is increased, and the rough surface, the lines and the melt fracture of the appearance surface of the product are reduced; the other feed inlet controls the feeding of the lip part, and the length and the size of the lip of the product are controlled by independently adjusting the feeding amount of the lip part; and simultaneously, the utility model discloses a melt pool 8 of wall thickness such as guarantees that skeleton 13 advances all around to glue evenly, reduces sizing material cladding skeleton 13's entrance angle, increases the design of the section that converges of sizing material cladding, guarantees that skeleton 13 both sides advance gluey uniformity and reduce the both sides pressure difference, need not try the mistake repeatedly during production and confirm skeleton 13 position.

Claims (3)

1. The utility model provides a TPV holding strip extrusion die structure, includes that coincide in proper order fixes first die plate (1), second die plate (2), third die plate (3), flow distribution plate (4) and fixed plate (5) together, its characterized in that: the die cavities which are communicated with each other are all formed in the first die plate (1), the second die plate (2) and the third die plate (3), an auxiliary flow channel (7) is arranged on one side of the die cavity of the second die plate (2), a melt pool (8) communicated with the first die plate (1) is formed in the flow distribution plate (4), a framework positioning core (6) is fixedly connected onto the fixing plate (5), a guide hole (9) is formed in the center of the framework positioning core (6), and main flow channels (10) are symmetrically formed in two sides of the framework positioning core (6).

2. The TPV clip strip extrusion die structure of claim 1, wherein: the framework positioning core (6) extends into the cavity of the first template (1).

3. The TPV clip strip extrusion die structure of claim 1, wherein: the melt pool (8) is of a conical structure.

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