A tube bending forming die

Abstract

The utility model provides a kind of elbow forming die, including lower die holder and upper die holder, lower die holder is provided with lower forming insert piece, upper die holder is provided with upper forming insert piece below, lower forming insert piece middle position is concave downward for placing material, lower forming insert piece middle is embedded with the float material block that slides up and down, the both ends of float material block are respectively provided with locating block, locating block is provided with sliding slot in, reset structure for driving float material block reset is provided with below float material block;The position of the elbow to be processed is limited by the both ends of float material block and lower forming insert piece, prevent the position of elbow from deviating during processing, cause elbow cracking, affect the processing efficiency of elbow, after elbow processing is completed, the reset structure below float material block drives float material block to restore to original position upward;Locating block ensures the position of float material block fixed, avoid float material block to move back and forth, affect the processing of elbow;Compared with the traditional elbow machine forming, maintenance cost is lower, yield is higher, reduces security risk.

Description

Technical Field

[0001] This utility model relates to the field of compression molding technology, and in particular to a pipe bending forming mold. Background Technology

[0002] In the production of automotive seats, various bent tubes and fittings need to be produced. These bent tubes and fittings are basically bent using a tube bending machine. However, some bent tubes require a large turning angle (R) and a short straight section. Because the clamping space of the tube bending machine is insufficient, the tube bending machine cannot guarantee the quality and stability of the bent tube. In addition, traditional tube bending machines rely on robotic arms or hydraulic thrust, which are easily affected by tube rebound and mold wear, causing damage to the surface of the bent tube. Utility Model Content

[0003] The present invention aims to provide a pipe bending forming mold that can customize the contours of various pipe bends, has a wider range of applications, and avoids wear on the pipe bends, thereby improving production efficiency.

[0004] Therefore, the technical solution adopted by this utility model is as follows: a pipe bending forming mold, including a lower mold base and an upper mold base. Two lower forming inserts are symmetrically arranged on the lower mold base, and an upper forming insert matching the lower forming inserts is arranged below the upper mold base. After the lower forming inserts and the upper forming inserts are closed, a cavity structure with left and right symmetry, downward bending in the middle and circular cross-section is formed. A floating material block that can slide up and down in the middle of the two lower forming inserts is arranged between the two lower forming inserts. Positioning blocks are arranged on the front and rear sides of the floating material block, and sliding grooves for the floating material block to slide up and down are arranged on the opposite sidewalls of the two positioning blocks. The initial height of the floating material block is flush with the highest point of the lower forming insert. A reset structure for driving the floating material block to reset is arranged below the floating material block.

[0005] As a preferred embodiment of the above solution, the reset structure includes two reset springs disposed below the floating block, with the reset springs located at the front and rear ends of the floating block.

[0006] More preferably, the floating material block has a "U"-shaped groove that matches the cavity of the lower molding insert.

[0007] A further preferred embodiment is that each of the two lower forming inserts has a positioning groove on its opposite side for positioning the bent pipe to be processed, and one of the positioning grooves is provided with a positioning plate connected by bolts.

[0008] More preferably, the positioning block is connected to the lower mold base by bolts.

[0009] The beneficial effects of this utility model are as follows: By limiting the two ends of the floating material block and the lower forming insert, the bending pipe to be processed is positioned at three points, which is more accurate and prevents the position of the bending pipe from shifting during processing, which could lead to cracking and affect the processing efficiency. After the bending pipe is processed, the reset structure below the floating material block drives the floating material block to return to its original position, which is convenient for material removal and ensures the processing of the next bending pipe. Positioning blocks are set on the front and rear sides of the floating material block to ensure that the position of the floating material block is fixed and to prevent the floating material block from moving back and forth, which would affect the processing of the bending pipe. Compared with the traditional pipe bending machine forming, the maintenance cost is lower, the yield is higher, and the manual operation part of the bending pipe processing is reduced, thus reducing safety hazards. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the state of this utility model. Figure 1 .

[0011] Figure 2 This is a schematic diagram of the state of this utility model. Figure 2 .

[0012] Figure 3 This is a schematic diagram of the reset structure in this utility model.

[0013] Figure 4 This is a schematic diagram of the cavity structure in the lower molding insert of this utility model. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figures 1-4 As shown, a pipe bending forming mold includes a lower mold base 1 and an upper mold base 2. Two lower forming inserts 3 are symmetrically arranged on the lower mold base 1. An upper forming insert 4 matching the lower forming inserts 3 is arranged below the upper mold base 2. After the lower forming inserts 3 and the upper forming inserts 4 are closed, a cavity structure with left and right symmetry, downward bending in the middle and circular cross-section is formed. A floating material block 5 that can slide up and down in the middle of the two lower forming inserts 3 is arranged between the two lower forming inserts 3. Positioning blocks 6 are arranged on the front and rear sides of the floating material block 5 respectively. Sliding grooves for the floating material block 5 to slide up and down are arranged on the opposite side walls of the two positioning blocks 6 respectively. The initial height of the floating material block 5 is flush with the highest point of the lower forming insert 3. A reset structure for driving the floating material block 5 to reset is arranged below the floating material block 5.

[0016] The floating block 5 and two lower forming inserts 3 are used to limit the pipe, ensuring the stability of the pipe during the forming process and preventing displacement.

[0017] The reset structure includes two reset springs 7 located below the float block 5, with the springs 7 positioned at the front and rear ends of the float block 5. After the upper forming insert 4 presses down to form the bent pipe, the float block 5 is at its lowest position, and the reset springs 7 are in a compressed state. After the bent pipe is formed, the reset springs 7 drive the float block 5 to move upward, completing the reset. At this point, the float block 5 is at its highest position, facilitating positioning with the lower forming insert 3 for the pipe to be processed.

[0018] The floating material block 5 has a U-shaped groove that matches the cavity of the lower forming insert 3. By providing the U-shaped groove on the floating material block 5, the floating material block 5 can ensure the stability of the bent pipe and improve the forming quality when the upper forming insert 4 presses the bent pipe downward.

[0019] Each of the two lower forming inserts 3 has a positioning groove 8 on one of its opposite sides for positioning the bent pipe to be processed. One of the positioning grooves 8 is fitted with a positioning plate 9 connected by bolts. By opening the positioning grooves 8 on the two lower forming inserts 3 and connecting the positioning plate 9, during the pipe bending process, one end of the bent pipe to be processed is placed against the positioning plate 9 at one end to complete the positioning of the bent pipe to be processed. During the production process, a positioning plate 9 can be set on the left or right side to position the bent pipe to be processed.

[0020] The positioning block 6 is connected to the lower mold base 1 by bolts. This ensures the stability of the positioning block 6 and enables it to withstand the pressure of the floating material block 5.

[0021] The floating block 5 and the lower forming insert 3 limit the bending pipe to be processed at both ends, making the three positions more secure and preventing the bending pipe from shifting during processing, which could lead to cracking and affect the processing efficiency. After the bending pipe is processed, the reset structure below the floating block 5 drives the floating block 5 to return to its original position, ensuring the processing of the next bending pipe. Positioning blocks 6 are set at both ends of the floating block 5 to ensure that the floating block 5 is fixed in position and to prevent the floating block 5 from moving back and forth, which would affect the processing of the bending pipe. Compared with the traditional pipe bending machine forming, the maintenance cost is lower, the yield is higher, and the manual operation part of the bending pipe processing is reduced, reducing safety hazards. It can also be adapted to various types of bending pipes through mold design, making it more convenient to use.

[0022] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A pipe bending forming mold, comprising a lower mold base (1) and an upper mold base (2), characterized in that: Two lower forming inserts (3) are symmetrically arranged on the lower mold base (1). An upper forming insert (4) matching the lower forming inserts (3) is arranged below the upper mold base (2). After the lower forming inserts (3) and the upper forming inserts (4) are molded together, they form a cavity structure that is symmetrical from left to right, curved downward in the middle, and has a circular cross-section. A floating block (5) that can slide up and down in the middle of the two lower forming inserts (3) is arranged between the two lower forming inserts (3). Positioning blocks (6) are arranged on the front and rear sides of the floating block (5). Slide grooves for the floating block (5) to slide up and down are arranged on the opposite side walls of the two positioning blocks (6). The initial height of the floating block (5) is flush with the highest point of the lower forming insert (3). A reset structure for driving the floating block (5) to reset is arranged below the floating block (5).

2. The pipe bending forming mold according to claim 1, characterized in that: The reset structure includes two reset springs (7) located below the floating block (5), and the reset springs (7) are located at the front and rear ends of the floating block (5).

3. The pipe bending forming mold according to claim 1, characterized in that: The floating block (5) has a "U" shaped groove that matches the cavity of the lower forming insert (3).

4. The pipe bending forming mold according to claim 1, characterized in that: The two lower forming inserts (3) are provided with positioning grooves (8) on opposite sides for positioning the bent pipe to be processed, and a positioning plate (9) is provided on one of the positioning grooves by bolt connection.

5. A pipe bending forming mold according to claim 1, characterized in that: The positioning block (6) is connected to the lower mold base (1) by bolts.

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