Pipe bulge forming die

Abstract

The pipe bulge forming die comprises a forming mechanism, the forming mechanism is installed on the left side of a right die, the right die is fixedly connected with one end of a guide mechanism, the other end of the guide mechanism is fixedly connected with a left die, the left die is slidably connected with one end of an elastic mechanism, and the other end of the elastic mechanism is slidably connected with the right die; the left die comprises a clamping die mounting seat, a containing cavity is formed in the middle of the clamping die mounting seat, guide rails are mounted on the inner walls of the two sides of the containing cavity through bolts, a protruding clamping part is arranged in the middle of each guide rail, and the upper end and the lower end of each clamping part are each provided with a clamping die capable of sliding up and down. Through cooperation of the left die and the elastic mechanism, after secondary bulging is completed, a pipe fitting is separated from clamping and leaks out, subsequent machining such as groove screwing can be conducted through station conversion of the forming machine, the repeated clamping frequency of the pipe fitting is reduced, therefore, the machining efficiency is effectively improved, meanwhile, error accumulation caused by repeated clamping and positioning is reduced, and the machining quality is improved. And the machining precision is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe fitting processing, in particular to a pipe fitting bulging forming die. Background Art

[0002] In the field of modern industrial production, pipe fittings are key components for connecting and transmitting media, and their demand is growing with the vigorous development of various industries. Especially in the automotive manufacturing industry, pipe fittings not only play an important functional role, but their quality and processing efficiency directly affect the performance and production efficiency of the final product.

[0003] Traditional pipe forming methods have certain limitations, especially when dealing with complex shapes or multi-step processing. For example, after completing double-bump forming, if the straight section between the two bulges needs to be further processed such as grooving, the traditional method often requires the pipe to be removed from the clamp and re-clamped. This repetitive operation is not only time-consuming, but also reduces the overall processing efficiency and affects the processing accuracy. Summary of the invention

[0004] The invention provides a pipe bulging forming die, which solves the problems in the prior art that multiple clamping of pipes affects processing efficiency and processing accuracy.

[0005] The technical solution of the present invention is implemented as follows: a pipe bulging forming mold includes a forming mechanism, which is installed on the left side of a right mold, the right mold is fixedly connected to one end of a guide mechanism, the other end of the guide mechanism is fixedly connected to a left mold, the left mold is slidably connected to one end of a tensioning mechanism, and the other end of the tensioning mechanism is slidably connected to the right mold.

[0006] Furthermore, the left mold includes a clamp mounting seat, a accommodating chamber is opened in the middle of the clamp mounting seat, guide rails are installed on the inner walls on both sides of the accommodating chamber, a protruding locking portion is provided in the middle of the guide rail, and a clamp that can slide up and down is respectively installed at the upper and lower ends of the locking portion, and the two clamps are symmetrically arranged up and down.

[0007] Furthermore, four first springs are welded between the two clamping dies.

[0008] Furthermore, a bulge avoidance groove is provided at the left end of the clamping die, and a round die avoidance groove is provided at the right end of the clamping die.

[0009] Furthermore, the molding mechanism includes a molding circular mold with a hollow structure, a pin is provided at the right end of the molding circular mold, the pin is inserted into a slot opened in the right mold, and a molding cavity is opened at the left end of the molding circular mold; a protrusion is provided at the center of the inner wall of the molding circular mold, the left end of the protrusion abuts against one end of the core rod, and the other end of the core rod protrudes from the end face of the molding circular mold.

[0010] Furthermore, the right mold includes a mold base mounting plate, a mold base is fixedly mounted at the center position of the mold base mounting plate, and a slot for mounting the molding mechanism is opened at the left end of the mold base.

[0011] Furthermore, the guide mechanism includes a guide rod passing through the right mold, the right end of the guide rod is fixedly connected to a pressure plate, and the pressure plate is installed on the right mold; the left end of the guide rod is plugged into a guide tube and is slidably connected to the guide tube, and the guide tube is fixedly installed in a mounting groove opened in the left mold.

[0012] Furthermore, a second spring is provided between the left mold and the right mold, and two ends of the second spring are respectively inserted into the left mold and the right mold; the number of the guide mechanism and the second spring are both two, which are respectively arranged diagonally and crosswise.

[0013] Furthermore, the tensioning mechanism includes an ejector rod, the right end of which is sleeved in a first slide groove opened in the right mold, and the left end of which is sleeved in a second slide groove of an inclined wedge slider, and a first inclined surface is opened below the left end of the inclined wedge slider, and the first inclined surface is slidably connected to the top of the clamping mold.

[0014] Furthermore, a second inclined surface is provided at the right end of the top of the clamping mold, and the inclination angle of the second inclined surface is matched with that of the first inclined surface.

[0015] After adopting the above technical scheme, the beneficial effects of the present invention are as follows: through the cooperation of the left mold and the tensioning mechanism, after the secondary bulging is completed, the pipe fitting is detached from the clamping and leaks out, and then the subsequent processing such as grooving can be carried out through the conversion of the molding machine station, thereby reducing the number of repeated clamping of the pipe fitting, thereby not only effectively improving the processing efficiency, but also reducing the error accumulation caused by multiple clamping and positioning, and improving the processing accuracy; through the design of the guide mechanism, the precise alignment and stable movement of the right mold and the left mold are ensured to avoid molding errors caused by deflection; by setting the first spring and the second spring, the clamping die is assisted in resetting and separation, thereby enhancing the stability and service life of the mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2It is a structural schematic diagram of the molding mechanism and the right mold in the present invention;

[0019] Figure 3 It is a cross-sectional view of the circular forming die in the present invention;

[0020] Figure 4 and 5 An exploded view of the present invention;

[0021] Figure 6 It is a structural schematic diagram of the guide mechanism in the present invention.

[0022] Description of reference numerals: forming mechanism 10, forming circular die 11, latch 12, forming cavity 13, protrusion 14, core rod 15, gasket 16;

[0023] Right mold 20, slot 21, mold base mounting plate 22, mold base 23, clamping groove 24, clamping groove 25, first slide groove 26;

[0024] Guide mechanism 30, guide rod 31, pressure plate 32, guide tube 33;

[0025] Left mold 40, clamping mold mounting seat 41, accommodating chamber 42, guide rail 43, stopper 44, clamping mold 45, second inclined surface 451, first spring 46, bulge avoidance groove 47, round mold avoidance groove 48, positioning screw 49;

[0026] The tensioning mechanism 50 , the ejection rod 51 , the inclined wedge slider 53 , the second slide groove 54 , the first inclined surface 55 ; the second spring 60 ; and the pipe fitting 70 . DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] like Figure 1-6 As shown, the pipe bulging forming mold of an embodiment of the present invention includes a forming mechanism 10, which is installed on the left side of the right mold 20. The right mold 20 is fixedly connected to one end of the guide mechanism 30, and the other end of the guide mechanism 30 is fixedly connected to the left mold 40. The left mold 40 is slidably connected to one end of the tensioning mechanism 50, and the other end of the tensioning mechanism 50 is slidably connected to the right mold 20.

[0029] The forming mechanism 10 includes a forming circular die 11 of a hollow structure, a latch 12 is provided at the right end of the forming circular die 11, the latch 12 is inserted into a slot 21 provided in the right die 20, and a forming cavity 13 is provided at the left end of the forming circular die 11; a protrusion 14 is provided at the center of the inner wall of the forming circular die 11, the left end of the protrusion 14 abuts against one end of a core rod 15, and the other end of the core rod 15 protrudes from the end surface of the forming circular die 11. The protrusion 14 and the core rod 15 can also be provided with a gasket 16, and by fine-tuning the thickness of the gasket 16, the distance between the protrusion 14 and the core rod 15 can be accurately controlled to improve the precision of pipe forming.

[0030] The right mold 20 includes a mold base mounting plate 22, and a mold base 23 is fixedly installed at the center position of the mold base mounting plate 22 by bolts. A slot 21 for installing the molding mechanism 10 is opened at the left end of the mold base 23; a clamping groove 24 is opened at the right end of the mold base 23, and card grooves 25 are respectively opened on the upper and lower sides of the mold base mounting plate 22, so as to facilitate clamping and fixing the mold base 23.

[0031] The left mold 40 includes a clamping mold mounting seat 41, a receiving chamber 42 is provided in the middle of the clamping mold mounting seat 41, guide rails 43 are installed on the inner walls of both sides of the receiving chamber 42 by bolts, a protruding stopper 44 is provided in the middle of the guide rail 43, and a clamping mold 45 that can slide up and down is installed at the upper and lower ends of the stopper 44, and the two clamping molds 45 are symmetrically arranged up and down. A plurality of first springs 46 are welded between the two clamping molds 45, preferably, the number of the first springs 46 is four; the first springs 46 can assist the clamping mold 45 to move outward and reset, so that the pipe fitting 70 is disengaged from the clamping, and then it is convenient to remove the pipe fitting 70 after processing and forming.

[0032] In addition, a bulge avoidance groove 47 is provided at the left end of the clamping die 45, and a round mold avoidance groove 48 is provided at the right end. Multiple positioning screws 49 are fixed to the top and bottom of the left mold 40 by bolts, and the positioning screws 49 are in contact with the clamping die 45, and the positioning screws 49 can limit the moving position of the clamping die 45.

[0033] The guide mechanism 30 includes a guide rod 31 passing through the right mold 20, the right end of the guide rod 31 is fixedly connected to a pressure plate 32, and the pressure plate 32 is installed on the right mold 20; the left end of the guide rod 31 is plugged with a guide tube 33 and slidably connected to the guide tube 33, and the guide tube 33 is fixedly installed in a mounting groove provided in the left mold 40. When in use, the right mold 20 moves to the left, driving the guide rod 31 to move to the left along the guide tube 33, so that the right mold 20 is guided and positioned, avoiding the right mold 20 from being deflected during the movement to the left, which affects the normal use of the mold.

[0034] A second spring 60 is also provided between the left mold 40 and the right mold 20. The two ends of the second spring 60 are respectively inserted into the left mold 40 and the right mold 20 to assist in separating the left mold 40 and the right mold 20 after the secondary bulging forming is completed. The number of the guide mechanism 30 and the second spring 60 are both two, which are respectively arranged diagonally crosswise.

[0035] The tensioning mechanism 50 includes an ejector rod 51, the right end of which is sleeved in a first slide groove 26 opened in the right mold 20, and the left end of the ejector rod 51 is sleeved in a second slide groove 54 opened in an inclined wedge slider 53. A first inclined surface 55 is opened below the left end of the inclined wedge slider 53, and the first inclined surface 55 is slidably connected to the top of the clamping mold 45. A second inclined surface 451 is opened at the right end of the top of the clamping mold 45, and the inclination angles of the second inclined surface 451 and the first inclined surface 55 are adapted to each other.

[0036] Working principle of this embodiment: When the pipe 70 needs to be bulged for the second time, the mold is installed on the molding machine so that the mold is aligned with the clamped pipe 70. After starting the molding machine, the right mold 20 drives the molding circular mold 11 and the core rod 15 to move to the left under the push of the molding machine to the left; at the same time, the right mold 20 also drives the ejector rod 51 and the inclined wedge slider 53 to move to the left in turn, and the inclined wedge slider 53 applies an inward force to the clamping mold 45 through the first inclined surface 55. The two clamping molds 45 are forced to move inward to a suitable position and clamp the pipe 70. At this time, the bulge avoidance groove 47 can avoid the first bulge that has been formed.

[0037] Next, the right die 20 drives the forming circular die 11 and the mandrel 15 to continue to move leftward to a suitable position, contact the pipe 70 and extrude the end of the pipe 70 through the forming cavity 13, thereby completing the secondary bulging. At this time, the circular die avoidance groove 48 is used to avoid the forming circular die 11.

[0038] After the secondary bulging is completed, the mold moves to the right, the second spring 60 assists the left mold 40 to separate from the right mold 20, and the first spring 46 assists the clamping mold 45 to move outward and reset, so that the pipe 70 is released from the clamping and leaks out. Finally, by switching the molding machine station, the pipe 70 can be subjected to subsequent processing such as grooving without removing the pipe 70 from the clamping mold.

[0039] The present invention cooperates with the left mold and the tensioning mechanism, and after the secondary bulging is completed, the pipe fitting is detached from the clamping and leaks out, and then the subsequent processing such as grooving can be carried out by converting the molding machine station, thereby reducing the number of repeated clamping of the pipe fitting, thereby effectively improving the processing efficiency, reducing the error accumulation caused by multiple clamping and positioning, and improving the processing accuracy; through the design of the guide mechanism, the precise alignment and stable movement of the right mold and the left mold are ensured to avoid molding errors caused by deflection; by setting the first spring and the second spring, the clamping mold is assisted in resetting and separating, thereby enhancing the stability and service life of the mold.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A pipe bulging forming die, comprising a forming mechanism (10), characterized in that: The molding mechanism (10) is installed on the left side of the right mold (20); the right mold (20) is fixedly connected to one end of the guide mechanism (30); the other end of the guide mechanism (30) is fixedly connected to the left mold (40); the left mold (40) is slidably connected to one end of the tensioning mechanism (50); the other end of the tensioning mechanism (50) is slidably connected to the right mold (20).

2. A pipe bulging forming die according to claim 1, characterized in that: The left mold (40) includes a clamping mold mounting seat (41), a receiving chamber (42) is opened in the middle of the clamping mold mounting seat (41), guide rails (43) are installed on the inner walls of both sides of the receiving chamber (42), a protruding stop portion (44) is provided in the middle of the guide rail (43), and a clamping mold (45) that can slide up and down is installed at the upper and lower ends of the stop portion (44), and the two clamping molds (45) are symmetrically arranged up and down.

3. A pipe bulging forming die as claimed in claim 2, characterized in that: Four first springs (46) are welded between the two clamping dies (45).

4. A pipe bulging forming die as claimed in claim 2, characterized in that: The left end of the clamping die (45) is provided with a bulge avoidance groove (47), and the right end of the clamping die (45) is provided with a round die avoidance groove (48).

5. A pipe bulging forming die according to claim 1, characterized in that: The molding mechanism (10) comprises a molding circular mold (11) with a hollow structure, a latch (12) being provided at the right end of the molding circular mold (11), the latch (12) being inserted into a slot (21) provided in the right mold (20), and a molding cavity (13) being provided at the left end of the molding circular mold (11); a protrusion (14) being provided at the center of the inner wall of the molding circular mold (11), the left end of the protrusion (14) being abutted against one end of a core rod (15), and the other end of the core rod (15) protruding from the end surface of the molding circular mold (11).

6. A pipe bulging forming die as claimed in claim 5, characterized in that: The right mold (20) comprises a mold base mounting plate (22), a mold base (23) is fixedly mounted at the center of the mold base mounting plate (22), and a slot (21) for mounting the molding mechanism (10) is provided at the left end of the mold base (23).

7. A pipe bulging forming die according to claim 1, characterized in that: The guide mechanism (30) comprises a guide rod (31) passing through the right mold (20), the right end of the guide rod (31) being fixedly connected to a pressure plate (32), and the pressure plate (32) being installed on the right mold (20); the left end of the guide rod (31) being plugged into a guide tube (33) and being slidably connected to the guide tube (33), and the guide tube (33) being fixedly installed in a mounting groove provided in the left mold (40).

8. A pipe bulging forming die according to claim 7, characterized in that: A second spring (60) is also arranged between the left mold (40) and the right mold (20), and the two ends of the second spring (60) are respectively inserted into the left mold (40) and the right mold (20); the number of the guide mechanism (30) and the second spring (60) are both two, and they are respectively arranged diagonally and crosswise.

9. A pipe bulging forming die as claimed in claim 2, characterized in that: The tensioning mechanism (50) includes an ejector rod (51), the right end of which is sleeved in a first slide groove (26) provided in the right mold (20), and the left end of which is sleeved in a second slide groove (54) provided in an inclined wedge slider (53). A first inclined surface (55) is provided below the left end of the inclined wedge slider (53), and the first inclined surface (55) is slidably connected to the top of the clamping mold (45).

10. A pipe bulging forming die according to claim 9, characterized in that: A second inclined surface (451) is provided at the right end of the top of the clamping mold (45), and the inclination angles of the second inclined surface (451) and the first inclined surface (55) are matched.

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