CN207617035U - Molding die - Google Patents

Abstract

The utility model discloses a molding die, which comprises two corresponding first and second mold monomers of the mould. The first and second mold monomers have molding surfaces and are closed to each other to form a molding cavity. There are at least two cavities, and the mold assembly after the first and second molds are molded is provided with a main channel connected to each molding cavity through a reversing valve. A set of molding moulds, the first and second molds are molded together to form multiple molding cavities. Each molding cavity can be designed for the same type of product or different types of products, and can also be designed for the same type of product with different sizes and specifications, and can be adjusted according to production needs. The reversing valve makes the main channel and each molding cavity in the conduction or cut-off state. After the first and second molds are single-molded, the main channel is injected, and finally demolded to complete the simultaneous production of multiple products, which greatly reduces the mold cost. The manufacturing cost avoids the step of changing molds for producing different types of products, and improves production efficiency at the same time.

Description

Forming mold

technical field

The utility model belongs to the field of injection molding production, in particular to a molding die.

Background technique

Rubber and plastic products are often produced by injection molding, and forming molds are essential production components. In the prior art, for a certain type of product, the forming mold is equipped with a single upper and lower mandrel for manufacturing and production, and only one product can be produced after one mold clamping is completed, the production efficiency is low, and in the production design requirements , A certain type of product has multiple sizes and specifications. At this time, it is necessary to design multiple sets of molds for production. During the production period, the core mold needs to be replaced to produce products of different sizes and specifications. The operation process is cumbersome and greatly Labor is wasted, and work productivity cannot be guaranteed.

Utility model content

The purpose of the utility model is to provide a forming mold, which can simultaneously produce multiple products or products of the same model with different specifications and sizes after mold closing and injection molding, thereby improving production efficiency.

In order to achieve the above object, the utility model adopts the following technical solutions: a forming mold, including two corresponding first and second mold monomers of the mold, the first and second mold monomers have molding surfaces and are closed after being molded together A molding cavity is formed. There are at least two molding cavities. The mold assembly after the first and second molds are molded is provided with a main flow channel connected to each molding cavity through a reversing valve.

In the above technical solution, a set of molding moulds, the first and second molds are molded together to form multiple molding cavities, and each molding cavity can be designed for the same type of product or different types of products, and can also be designed for the same type of product with different sizes and specifications. According to the production demand, adjust the reversing valve so that the main channel and each molding cavity are in the conduction or cut-off state. After the first and second molds are single-molded, the main channel is injected, and finally demolded to complete the simultaneous production of multiple products. It greatly reduces the cost of mold manufacturing, avoids the steps of changing molds for different types of products, and improves production efficiency at the same time.

Description of drawings

Fig. 1 is the schematic diagram of the first mold monomer of the present utility model;

Fig. 2 is the cross-sectional view of the reversing valve of the present invention, the main channel, and the sub-channel;

Fig. 3 is a cross-sectional view of the valve core, the valve seat and the first mold monomer of the utility model;

Fig. 4 is a schematic diagram of the second mold unit of the present invention.

Detailed ways

In conjunction with accompanying drawing 1～4, the utility model is further described:

A molding die, comprising two corresponding first and second mold monomers 10, 20 of the mold, the first and second mold monomers 10, 20 have molding surfaces and are closed to each other to form a molding cavity 40, said There are at least two molding cavities 40 , and the mold assembly after the first and second mold units 10 and 20 are molded is provided with a main channel connected to each molding cavity 40 via a reversing valve 30 . A set of molding moulds, the first and second moulds 10 and 20 are molded together to form multiple molding cavities 40, and each molding cavity 40 can be designed for the same type of product or different types of products, and can also be designed for the same type of product with different sizes and specifications According to the production demand, adjust the reversing valve 30 so that the main channel and each molding cavity 40 are in a conduction or cut-off state. After the first and second mold monomers 10 and 20 are molded together, the main channel is injected, and finally demolded to complete multiple products. Simultaneous production, which greatly reduces the cost of mold manufacturing, avoids the steps of changing molds for different types of products, and improves production efficiency at the same time.

The first and second mold units 10 and 20 are respectively provided with a concave mold with a concave forming area and a convex mold with a convex forming area, and the reversing valve 30 is a rotary reversing valve and is arranged on the first On the mold unit 10 , the reversing valve 30 is provided with an inlet 31 communicating with the main channel, and the reversing valve 30 is provided with at least two outlets 32 selectively communicating with each molding cavity 40 . The meaning of concave mold and convex mold refers to the shape characteristics of the mold itself, that is, the concave mold refers to the shape whose molding surface area is mainly concave. If it corresponds to the product to be formed, the molding surface of the concave mold corresponds to the product The convex part of the convex mold is the opposite; before the first and second mold monomers 10 and 20 are closed, the reversing valve 30 is rotated and adjusted according to the production demand, and the inlet and outlet ports 31 and 32 are selected to align the main channel with the corresponding The molding cavity 40 is communicated, and then the molds are closed for injection molding.

The first mold unit 10 is provided with a main channel 11, and the main channel is formed by the first and second mold units 10, 20 after mold closing and covers the channel formed by the notch of the main channel 11. The injection hole 21 that offers on the second mold unit 20 constitutes. During production, the first and second mold monomers 10 and 20 are respectively lower and upper molds, and an injection hole 21 is opened on the second mold monomer 20 for injection molding.

The first mold unit 10 is also provided with at least two sub-channels 12, and the channels formed by the notches of the sub-channels 12 after the first and second mold units 10 and 20 are molded together form the sub-channels. , the sub-channel 12 is sequentially connected with the main channel 11 and communicated with each molding cavity 40, the reversing valve 30 is arranged at the junction of the main channel 11 and the sub-channel 12, the inlet and outlet of the reversing valve 30 The orifices 31 and 32 are in selective communication with the main channel 11 and the sub-channels 12 . There are sub-channels 12 for the transitional communication between the main channel 11 and each molding cavity 40, and at the same time, it is convenient to arrange the reversing valve 30, and adjust the reversing valve 30 to realize the conduction and cut-off states of the sub-channels 12 and the main channel 11 .

The reversing valve 30 includes a valve seat 33 and a valve core 34 that cooperate with each other. The valve seat 33 is at least composed of three concentric circular arc segments at the junction of the main channel 11 and the sub-channel 12 . The side wall is formed, and the upper section of the valve core 34 is provided with a T-shaped groove, and the groove end of the T-shaped groove extends to the outer peripheral wall of the valve core 34 to form inlet and outlet ports 31, 32, and the end surface of the valve core 34 is in contact with the first The surface of the mold body 10 is even. As an embodiment, T-shaped grooves can be provided on the spool 34 to form the inlet and outlet ports 31, 32, the spool 34 and the valve seat 33 rotate relatively, and the corresponding selection inlet and outlet ports 31, 32 and the main channel 11, On and off states of the sub-channel 12.

An elastic limiting unit that restricts the rotation of the reversing valve 30 is provided between the reversing valve 30 and the first mold unit 10 . In order to avoid the rotation of the spool 34 of the reversing valve 30 when the first and second mold monomers 10 and 20 are clamped for injection molding, resulting in a gap between the inlet and outlet ports 31, 32 and the main channel 11 and the sub-channel 12 The conduction and cut-off states are changed, and the elastic limit unit is set to limit the rotation of the valve core 34 .

The first mold unit 10 is provided with a positioning hole to form a rotation fit with the lower section of the valve core 34. The elastic limiting unit includes an arc-shaped groove 50 provided on the wall of the positioning hole. The valve core The lower section of 34 is provided with a blind hole, the core of the blind hole is perpendicular to the shaft core of the spool 34, a compression spring is arranged in the blind hole, one end of the push rod 60 is connected with the compression spring, and the other end of the push rod 60 extends out of the blind hole. The hole is matched with the arc groove 50 correspondingly. When the spool 34 is rotated, the ejector rod 60 is separated from the arc groove 50 under the action of torsion, and the ejector rod 60 is retracted into the blind hole. The specific adjustment options are the inlet and outlet ports 31, 32 and the main channel 11, After the sub-channel 12 is turned on and off, the compression spring rebounds to make the push rod 60 cooperate with other arc-shaped grooves 50 to limit the rotation of the valve core 34 .

Claims (7)

1. a kind of molding die, including corresponding first and second mold monomers of two, mold (10,20), the first and second mold monomers There is forming surface on (10,20) and be enclosed forming cavity (40) after molding each other, it is characterised in that：The forming cavity (40) is extremely There are two setting less, the die assembly after the first and second mold monomers (10,20) molding is equipped with sprue and is connected via reversal valve (30) To each forming cavity (40).

2. molding die according to claim 1, it is characterised in that：First and second mold monomers (10,20) are respectively For based on setting concave surface forming area cavity plate and the punch-pin based on the forming area of convex surface, reversal valve (30) be rotary commutation Valve and be arranged in the first mold monomers (10), reversal valve (30) is connected to equipped with flow inlet (31) with sprue, reversal valve (30) It is connected to each forming cavity (40) selection equipped at least two outflow ports (32).

3. molding die according to claim 2, it is characterised in that：Master is offered in first mold monomers (10) Conduit (11), the notch that the sprue is lived main channel (11) by the first and second mold monomers (10,20) molding rear seal-cover are formed Channel and the second mold monomers (20) on the injecting hole (21) that opens up constitute.

4. molding die according to claim 3, it is characterised in that：It is also at least set in first mold monomers (10) It lives to divide the channel that the notch of conduit (12) is formed there are two conduit (12), the first and second mold monomers (10,20) molding rear seal-cover is divided Constitute runner, it is described to divide conduit (12) to postpone with main channel (11) to be connected and be connected to each forming cavity (40), reversal valve (30) be arranged in main channel (11) and divide the joining place of conduit (12), reversal valve (30) into and out of head piece (31,32) and main channel (11), divide conduit (12) selection connection.

5. molding die according to claim 4, it is characterised in that：The reversal valve (30) includes mutually matched valve Seat (33) and spool (34), the valve seat (33) at least by three of main channel (11) and the joining place for dividing conduit (12) each other It is spaced and concentric arc section side wall is constituted, the epimere of the spool (34) offers T-slot, and the slot end of T-slot extends to The periphery wall of spool (34) is constituted into and out of head piece (31,32), and the end face of spool (34) is flat with the surface of the first mold monomers (10) Together.

6. molding die according to claim 5, it is characterised in that：The reversal valve (30) and the first mold monomers (10) the elastic spacing unit that limitation reversal valve (30) rotates is equipped between.

7. molding die according to claim 6, it is characterised in that：First mold monomers (10) offer positioning Hole and the hypomere composition of spool (34) are rotatably assorted, and the elastic spacing unit includes the arc opened up on the hole wall of location hole The hypomere of groove (50), the spool (34) offers blind hole, and the shaft core of the Kong Xin and spool (34) of blind hole are mutually perpendicular to, blind Compressed spring is equipped in hole, one end of mandril (60) is connect with compressed spring, and the other end of mandril (60) stretches out blind hole and arc Groove (50) corresponding matching.