CN205056771U - A flexible die set for high -pressure forming in three -way pipe - Google Patents

Abstract

The utility model discloses a flexible die set for high -pressure forming in three -way pipe. It be adopt with the half module parallel placement in the base, make the half module that has different radiuses and length cooperate and form the shaper of the three -way pipe person in charge die cavity that has different diameters, different length by ultimate compound die with the base through the connecting screw, the utility model discloses an among a flexible die set for high -pressure forming in three -way pipe, going up the lower plate and being connected fixedly with the upper and lower base cooperation that corresponds respectively, the base is division fluted about wherein, and upward the female die parallel placement is in the recess, mutually support with the female die and form the three -way pipe and be responsible for to be equipped with simultaneously in the upper mold section of die cavity and be responsible for the die cavity branch pipe die cavity of intercommunication each other with the three -way pipe, balanced drift links to each other with the branch pipe die cavity, drift about three -way pipe person in charge die cavity both ends are equipped with, right drift axle center is equipped with leads the oil groove. Compared with the prior art, the utility model can the realization go up the three -way pipe part that the female die made the shaping multiple pipe diameter specification of one set of die set through the change, improve production efficiency and economic interests, increase unloading pipe length through increasing the axial length who goes up the female die simultaneously, the volume of changing axial feed increases the three -way pipe that axial load is beneficial to the higher branch pipe length of acquisition indirectly.

Description

A flexible mold device for high pressure forming in tee pipe

technical field

The utility model relates to a mold device for high-pressure forming in a three-way pipe, in particular to a flexible mold device for high-pressure forming in a three-way pipe.

Background technique

The high-pressure forming process in the tee pipe is a new plastic forming technology developed in recent years. Because it realizes one-time integral forming, it avoids the deformation caused by welding, and the lack of weld seam also makes the quality of the tee pipe The weight of the product has been reduced to a certain extent, and it is currently widely used in the automotive, aviation and transportation industries. The high-pressure forming in the tee pipe is an asymmetric three-dimensional deformation process, and the forming process is relatively complicated. In addition to the internal pressure generated by the high-pressure oil, the thrust of the left and right punches, the balance force of the balance punch, the upper half mold and the lower half mold Clamping force, friction and so on. In the forming of the tee pipe, the length of the branch pipe is an important reference index for the forming quality of the tee pipe, and the branch pipe of the tee pipe will generally be thinned during forming. When the thinning is too large, the pipe will be removed in the final plastic resection If it is too high, the length of the branch pipe is insufficient, which cannot meet the normal use of the tee fittings.

In order to reduce the thinning of the branch pipe, the existing forming process generally improves the forming quality of the tee pipe branch by optimizing the process parameters such as internal pressure, axial feed rate and friction coefficient, but for some special tee pipe fittings For example, the preparation of tee pipe fittings for refrigeration equipment with long branch pipes still cannot obtain satisfactory qualified tee pipes; in addition, the existing forming process generally uses a set of mold devices to form only one diameter tee pipe, Poor flexibility reduces production efficiency and economic benefits.

In the existing internal high pressure forming die device, the clamping pipe diameter and axial length of the upper half mold and the lower half die are fixed, so that the tee pipe fittings after forming have a single specification, and the mold device is less flexible; The longer tee pipe cannot be satisfied by the existing technology.

Contents of the invention

The utility model is to provide a flexible mold device for high-pressure forming in a three-way pipe to solve the problem that the diameter and axial length of the upper half-mold and the lower half-mold in the prior art high-pressure forming die device for a three-way pipe are not fixed. Changes, so that the formed tee pipe fittings have a single specification, and the flexibility of the mold device is poor; and the technical problems that cannot be satisfied by the existing process when preparing a tee pipe with a long branch length.

In order to solve the above technical problems, the utility model provides a flexible mold device for high-pressure forming in a three-way pipe, including an upper base plate, an upper base, an upper mold half, a lower base plate, a lower base, a lower half mold, a left punch, a right Punch, balanced punch, the upper and lower bottom plates are respectively connected and fixed with the corresponding upper and lower bases; the upper and lower bases are provided with grooves, and the upper and lower mold halves are placed in parallel in the grooves; Cooperate with the lower half-mold to form the main cavity of the three-way pipe, and the upper half-mold is equipped with a branch cavity that communicates with the main cavity of the three-way pipe; the balance punch is connected with the branch cavity; the three-way There are left and right punches at both ends of the main pipe cavity, and an oil guide groove is arranged at the axis of the right punch.

In the utility model, the upper bottom plate and the upper base are provided with forming holes that communicate with each other, and the forming holes are connected with the balance punch; the upper bottom plate is also provided with a threaded hole that is matched with the clamping press.

In the utility model, threaded connection holes are provided at both ends of the upper and lower molds; connection screws are provided at both ends of the upper base, and threaded connection holes corresponding to the connection screws are provided at both ends of the lower base; The two ends of the upper and lower base grooves are also provided with connecting screws corresponding to the threaded connecting holes; the threaded connecting columns of the connecting screws run through the upper and lower bases and are threaded with the corresponding threaded connecting holes. The screws can match the upper and lower half molds with different radii and axial lengths with the upper and lower bases according to the needs, and form the main cavity of the tee pipe with different diameters and different axial lengths by the final mold clamping.

The beneficial effects of the utility model are as follows: (1). The utility model is a flexible mold device for high-pressure forming in a three-way pipe, and the width of the groove provided in the upper and lower bases of the device for determining the maximum pipe diameter in the required three-way pipe , the base groove and the upper and lower half molds with different pipe diameters are assembled and matched to form main pipe cavities with different diameters, so that a set of mold devices can form tee pipe parts with various pipe diameters, which reduces the production cost and also Improve production efficiency; (2) The axial length of the upper and lower half molds and the groove depth matched with it can be inconsistent. When preparing some tee pipes with long branch lengths, by increasing the axis Increase the length of the blank tube blank to the length, indirectly change the axial feed rate, and increase the axial load to obtain a tee pipe with a higher branch length.

Description of drawings

Figure 1 is a schematic diagram of the internal structure of a flexible mold device for high pressure forming in a tee pipe of the present invention;

Fig. 2 is a schematic diagram of the overall assembly of the mold device of the present utility model;

Fig. 3 is a schematic diagram of the connection structure between the lower base of the utility model and the lower half mold;

Fig. 4 is a schematic diagram of the connection structure between the upper base of the utility model and the upper half mold;

Fig. 5 is the effect drawing of the tee pipe forming of the utility model device;

In the figure, 1-upper mold, 2-lower mold, 3-upper base, 4-lower base, 5-upper base, 6-lower base, 7-main pipe cavity, 8-branch cavity, 9-left Punch, 10-right punch, 11-balanced punch, 12-oil guide groove, 13-forming hole, 14-threaded hole, 15-connecting screw, 16-threaded connecting column, 17-threaded connecting hole, 18-threaded Connecting hole, 19-groove, 20-connecting bolt, 21-tube blank

detailed description

A flexible mold device for high-pressure forming in a tee pipe in the utility model will be described in detail below in conjunction with the accompanying drawings.

As shown in Figures 1, 2, 3, and 4: in the utility model device, including upper base plate 5, upper base 3, upper half mold 1, lower base plate 6, lower base 4, lower half mold 2, left punch 9, Right punch 10, balance punch 11. Upper base plate 5 is connected and fixed with upper base 3, and lower base plate 6 is connected and fixed with lower base 4; 4 are provided with grooves 19, and the upper half mold 1 and the lower half mold 2 with threaded connection holes 18 at both ends are placed in the grooves 19 in parallel; the upper half mold 1 and the lower half mold 2 pass through the upper base 3 and the lower base 4. The connecting screw 15 provided with is matched and connected, and the position of the threaded connecting hole 18 is set according to the position of the connecting screw 15; the upper half-mold 1 which cooperates with the lower half-mold 2 to form the tee pipe main cavity 7 is equipped with a main pipe at the same time. The cavity 7 is connected to the branch cavity 8; the balance punch 11 is connected to the branch cavity 8 through the interpenetrating forming hole 13 provided on the upper base plate 5 and the upper base 3; The punch 9 and the right punch 10, the axis of the right punch 10 is provided with an oil guide groove 12, which is used to connect with the hydraulic pump; through the connecting screw (15), the upper half mold 1 with different radii and axial lengths can be connected as required. , the lower half-mold 2 cooperates with the upper base 3 and the lower base 4 to form a three-way pipe main pipe cavity 7 with different diameters and different axial lengths by the final mold clamping, so as to carry out tube blanks 21 with different pipe diameters. take shape.

Both ends of the upper base 3 are provided with connecting bolts 20, and the lower base 4 is provided with threaded connecting holes 17 corresponding to the connecting bolts 20, so as to facilitate the positioning of the mould.

In the utility model, a flexible mold device for high-pressure forming in a tee pipe is mainly realized through the following steps during use:

1) Determine the width of the groove 19 in the upper base 3 and the lower base 4 according to the maximum pipe diameter D _max of the required tee pipe: the width of the groove 19 is t, and the length is l, where t>D _max is satisfied, as shown in the figure 1, 2, 3, 4;

2) According to the maximum pipe diameter D _max of the required tee pipe, determine the hole diameter of the forming hole 13 connecting the upper base plate 5 and the upper base 3: the forming hole diameter is d, which satisfies d≥D _max , see Figures 1 and 2 ;

3) The axial length L of the upper half-mold 1 and the lower half-mold 2 can be set according to the needs, so as to form the tube blanks 21 of different lengths and obtain a tee pipe with a higher branch length, as shown in Figure 2;

4), the lower base plate 6 is fixedly connected with the lower base 4, the lower half-mold 2 is placed in the groove 19 of the lower base 4, and screwed through the connecting screw 15; the upper base plate 5 is also fixedly connected with the upper base 3 , the upper half-mold 1 is placed in the groove 19 of the upper base 3, and is threaded by the connecting screw 15; then the upper half-mold 1 and the lower half-mold 2 are threaded through the connecting bolt 20 and the threaded connection hole 17 through the clamping press Carry out mold closing, see Figure 1, 3, 4;

5) After closing the mold, place the initial tube blank 21 in the cavity 7 of the main tube of the tee pipe, and seal the two ends of the tube blank 21 with the left punch 9 and the right punch 10 driven by hydraulic equipment, and the right punch The oil guide groove 12 on the 10 is connected with the hydraulic pump, and injects high-pressure oil into the tube blank 21, and adjusts the internal pressure through the control of the hydraulic pump, as shown in Figure 2;

6) The hydraulic equipment drives the left punch 9 and the right punch 10 to extrude the tube blank 21. Under the double action of the left punch 9, the right punch 10 and internal pressure, the tube blank 21 first undergoes elastic deformation; and After entering the plastic deformation, in addition to the internal bulging force of the high-pressure oil, the extrusion force of the left punch 9 and the right punch 10, the tube blank 21 also has the balance force of the balance punch 11. At this time, the tube blank 21 moves along the The main pipe cavity 7 and the branch pipe cavity 8 are flow-formed until the balance punch 11 exits, and the forming is completed, as shown in Figure 5;

7) Reshape and cut off the formed tee pipe parts to obtain tee pipe fittings that meet the requirements;

8) After the mold is opened, disassemble the base 3, 4 and the half-mold 1, 2 through the connecting screw 15, and re-connect the other half-molds that meet the conditions with the original base 3, 4 to prepare different Specifications of tee pipe fittings;

Combined with Figures 1, 2, 3, and 4, the axial length L of the upper half-mold 1 and the lower half-mold 2 may be inconsistent with the depth l of the groove 19; the diameter D of the initial tube blank 21 and other tube blanks that meet the conditions satisfies: D≤D _max .

Claims (3)

1. the flexible die device for three-way pipe internal high pressure forming, it is characterized in that: comprise upper plate (5), upper bed-plate (3), upper mold section (1), lower shoe (6), lower bottom base (4), female die (2), left drift (9), right drift (10), balance drift (11), described upper and lower base plate (5,6) is fixedly connected with corresponding upper and lower base (3,4) respectively; Described upper and lower base (3,4) has groove (19), and upper and lower half module (1,2) is parallel to be placed in groove (19); Describedly complement each other to form in upper mold section (1) that three-way pipe is responsible for die cavity (7) tubular cavity (8) being provided with simultaneously and being responsible for die cavity (7) with three-way pipe and being interconnected with female die (2); Described balance drift (11) is connected with a tubular cavity (8); Described three-way pipe supervisor die cavity (7) two ends are provided with left and right (9,10) drift, and right drift (10) axle center is provided with oil guide groove (12).

2. a kind of flexible die device for three-way pipe internal high pressure forming according to claim 1, it is characterized in that: described upper plate (5) and upper bed-plate (3) are provided with mutually through forming hole (13), described forming hole (13) is connected with balance drift (11), and upper plate (5) is separately provided with the screwed hole (14) be connected with clamping pressure machine.

3. a kind of flexible die device for three-way pipe internal high pressure forming according to claim 1, is characterized in that: described upper and lower half module (1,2) two ends are provided with threaded connection hole (18); Described upper bed-plate (3) two ends are provided with connecting bolt (20), and lower bottom base (4) two ends are provided with the threaded connection hole (17) corresponding with connecting bolt (20); Described upper and lower base (3,4) groove (19) two ends are also provided with the attachment screw (15) corresponding with threaded connection hole (18); The post that is threaded (16) of described attachment screw (15) runs through upper and lower base (3,4) and connects with corresponding threaded connection hole (18) matching thread, can as required the upper and lower half module (1,2) with different radii and axial length be carried out coordinating with upper and lower (3,4) base by described attachment screw (15) and formed by final matched moulds there is different-diameter, the three-way pipe of axially different length is responsible for die cavity (7).