Adjustable flat round pipe hot compression molding mould

Abstract

The utility model relates to the technical field of flat round pipe hot compression molding moulds, in particular to an adjustable flat round pipe hot compression molding mould which comprises a special-shaped section pipe, lower mould laminations and upper mould laminations, the inner sides of the lower mould laminations are movably connected with locking pull rods, the two ends of each locking pull rod are sleeved with locking nuts in a threaded mode, and the locking nuts are connected with the special-shaped section pipe in a threaded mode. The side wall of the locking nut abuts against the side wall of the lower tire lamination. According to the adjustable flat round pipe hot compression molding mould, the cavity of the mould is formed by stacking the laminations, so that the axial length and the cross section shape of the cavity can be adjusted according to the number and the shape of the laminations, and when the axial specification size of a special-shaped cross section pipe is changed, the change requirement can be met by changing the number of the laminations; the special-shaped section pipes of various specifications and sizes can be manufactured by changing the number of the laminations through one set of mould, the structure is simple, machining and manufacturing are easy, laser cutting is adopted for machining of the single laminations, convenience is achieved, and the mould manufacturing cost is low.

Description

Technical Field

[0001] This utility model relates to the technical field of hot molding jigs for flat round tubes, specifically an adjustable hot molding jig for flat round tubes. Background Technology

[0002] The flat round tube forming device is a supporting equipment for processing and forming flat round tubes. Flat round tubes used in quench heat exchangers are non-standard tube fittings with very strict dimensional accuracy requirements. Flat round tubes are formed by flattening round tubes during processing. With the continuous development of technology, people have higher and higher requirements for the manufacturing process of flat round tubes.

[0003] For example, the authorization announcement number "CN218798563U" is named a forming device for flat round tubes. It can form the flattened part of the product in one go, resulting in a beautiful shape, improving processing efficiency and saving production costs. However, the upper and lower molds of traditional irregular cross-section tube molding jigs are manufactured as a whole. The mold cavities of the upper and lower jigs are processed from the whole blank through CNC machining, which is very expensive. Moreover, when the specifications and dimensions of the irregular cross-section tube change, a new jig must be manufactured, which is even more expensive. Utility Model Content

[0004] The purpose of this invention is to solve the problem of excessively high manufacturing costs of existing flat round tube forming devices, and to propose an adjustable flat round tube hot molding die.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design an adjustable flat round tube hot molding die, including a tube with an irregular cross section, lower tire plates and upper tire plates. Locking rods are movably connected to the inner sides of multiple lower tire plates. Locking nuts are threaded onto both ends of multiple locking rods. The sidewalls of the locking nuts abut against the sidewalls of the lower tire plates. Locking rods are movably connected to the inner sides of multiple upper tire plates. The sidewalls of the locking nuts abut against the sidewalls of the upper tire plates.

[0007] Preferably, a shaped cross-section tube is movably provided on the inner side of the plurality of lower tire laminations and upper tire laminations, and a cavity is fixedly opened inside the shaped cross-section tube.

[0008] Preferably, the sidewall of the lower tire lamination is fixedly connected with upper and lower tire positioning plates, and the inner top wall of the plurality of upper and lower tire positioning plates is close to the outer wall of the upper tire lamination.

[0009] The adjustable flat round tube hot molding die proposed in this utility model has the following advantages: First, the cavity of the mold is formed by stacking pieces. Therefore, the axial length and cross-sectional shape of the cavity can be adjusted by the number and shape of the pieces. Furthermore, when the axial dimensions of the irregular cross-section tube change, the number of pieces can be changed to adapt to the changing requirements, rather than remanufacturing the entire molding die. That is, a set of dies can produce irregular cross-section tubes of various specifications and sizes by changing the number of pieces. The structure is simple and easy to process and manufacture. The processing of a single piece of the stack can be done by laser cutting, which is very convenient and the manufacturing cost of the die is low. Attached Figure Description

[0010] Figure 1 This is a partial three-dimensional structural schematic diagram of the present invention;

[0011] Figure 2 This is a front sectional view of the present invention;

[0012] Figure 3 A side sectional view of this utility model;

[0013] Figure 4 for Figure 2 Enlarged sectional view of section A in the middle;

[0014] Figure 5 for Figure 3 Enlarged sectional view of section B in the middle;

[0015] Figure 6 This is a schematic diagram of the three-dimensional structure of the lower tire laminations.

[0016] In the diagram: 1. Irregular cross-section tube, 2. Lower tire lamination, 3. Upper tire lamination, 4. Locking rod, 5. Locking nut, 6. Upper and lower tire positioning plates, 7. Cavity. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Example 1:

[0019] Please see Figure 1-5In this embodiment, an adjustable flat round tube hot molding die includes an irregular cross-section tube 1, lower tire stack 2, and upper tire stack 3. Locking rods 4 are movably connected to the inner sides of multiple lower tire stacks 2. Locking nuts 5 are threaded onto both ends of the locking rods 4, with the sidewalls of the locking nuts 5 abutting against the sidewalls of the lower tire stacks 2. Locking rods 4 are movably connected to the inner sides of multiple upper tire stacks 3, with the sidewalls of the locking nuts 5 abutting against the sidewalls of the upper tire stacks 3. Multiple lower tire stacks 2 with different cross-sectional shapes are stacked sequentially and then locked together by the locking rods 4 and locking nuts 5 to form a lower tire mold. Similarly, upper tire stacks 3 with different cross-sectional shapes are stacked sequentially and then locked together by the locking rods 4 and locking nuts 5 to form an upper tire mold.

[0020] Multiple lower tire laminations 2 and upper tire laminations 3 have irregularly shaped cross-section tubes 1 movably arranged on their inner sides. The irregularly shaped cross-section tubes 1 have cavities 7 fixedly opened inside. The cavities 7 will become flat ovals after being hot-pressed into irregularly shaped cross-section tubes 1 by a round tube with a uniform diameter.

[0021] The lower tire stack 2 is fixedly connected to the side wall with upper and lower tire positioning plates 6. The inner top of the upper and lower tire positioning plates 6 is close to the outer wall of the upper tire stack 3. The upper and lower tire positioning plates 6 are vertically welded to the outer side of the lower tire stack 2. The upper and lower tire positioning plates 6 extending outward from the outer side of the lower tire stack 2 serve to position the upper and lower tire molds.

[0022] Working principle:

[0023] The adjustable flat round tube hot molding die consists of a tube with an irregular cross section 1, a lower die plate 2, an upper die plate 3, a locking tie rod 4, a locking nut 5, and upper and lower die positioning plates 6. It is used to position round tubes with equal diameter cross sections, and then manufactures them by hot pressing using a press.

[0024] The adjustable flat round tube hot molding die consists of the following components:

[0025] First, multiple lower tire plates 2 with different cross-sectional shapes are stacked in sequence, and then locked together by locking rods 4 and locking nuts 5 to form a lower tire mold. Then, upper tire plates 3 with different cross-sectional shapes are stacked in sequence, and then locked together by locking rods 4 and locking nuts 5 to form an upper tire mold.

[0026] The process of using the adjustable flat round tube thermoforming die:

[0027] Then, the equal-diameter cross-section tube heated to a certain temperature is placed between the upper and lower molds, so that the upper mold moves downward and fits with the lower mold under the action of the press. The equal-diameter cross-section tube is formed into a special-shaped cross-section tube 1 in the cavity formed by the upper and lower molds, while the upper and lower tire positioning plates 6 extending outward from the outer side of the lower tire lamination 2 play the role of positioning the upper and lower molds.

[0028] Features of the adjustable flat round tube hot molding die:

[0029] Firstly, the cavity of the mold is formed by stacking pieces, so the axial length and cross-sectional shape of the cavity can be adjusted by the number and shape of the pieces.

[0030] Furthermore, when the axial dimensions of the irregular cross-section tube change, the number of laminations can be changed to adapt to the changing requirements, rather than remanufacturing the entire molding die. In other words, a set of dies can produce irregular cross-section tubes of various specifications and sizes by changing the number of laminations.

[0031] The structure is simple and easy to manufacture; single-piece laminations can be processed using laser cutting, which is very convenient and reduces the cost of jig manufacturing. Although this utility model has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. An adjustable flat round tube hot molding die, comprising an irregular cross-section tube (1), a lower die plate (2), and an upper die plate (3), characterized in that: Locking rods (4) are movably connected to the inner sides of multiple lower tire laminations (2), and locking nuts (5) are threaded onto both ends of multiple locking rods (4). The sidewalls of the locking nuts (5) abut against the sidewalls of the lower tire laminations (2). Locking rods (4) are movably connected to the inner sides of multiple upper tire laminations (3), and the sidewalls of the locking nuts (5) abut against the sidewalls of the upper tire laminations (3).

2. The adjustable flat round tube hot molding die according to claim 1, characterized in that: The inner sides of the multiple lower tire laminations (2) and upper tire laminations (3) are movably provided with irregular cross-section tubes (1), and the interior of the irregular cross-section tubes (1) is fixedly provided with cavities (7).

3. The adjustable flat round tube hot molding die according to claim 1, characterized in that: The lower tire stack (2) is fixedly connected to the side wall of the upper and lower tire positioning plates (6), and the inner wall of the top of the multiple upper and lower tire positioning plates (6) is close to the outer wall of the upper tire stack (3).

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