Hydraulic press shape pressing tool for automobile pipe fittings

Abstract

The utility model discloses a hydraulic press forming tool for automobile pipe fittings, which relates to the technical field of automobile part forming tools and comprises a forming bottom plate, a fixed forming part, a forming guide part, a movable forming part, a forming discharge part and an auxiliary guide frame. The whole forming process can be completed through one-time clamping, a device or a mold does not need to be replaced in the middle, and the workload of operators and possible misoperation are remarkably reduced; the production interruption time is shortened due to continuous operation in the forming process, the overall production efficiency is improved, and meanwhile the cost of a unit product is reduced; product quality fluctuation caused by frequent replacement of molds or devices is reduced through the continuous production technological process, and the consistency and stability of products can be kept easily; and through the replaceable arrangement of the fixed forming part, the forming male die and the discharging push block, the die configuration can be rapidly adjusted according to different production requirements, and the universality and flexibility of the die are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile component pressing tooling, in particular to a hydraulic press pressing tooling for automobile pipe fittings. Background Art

[0002] For the pipe end forming of the welding pipe fittings of the automobile exhaust system, the original processing technology adopts multiple discontinuous processing modes for processing operations. The pipe fittings must first be pre-expanded before the expansion operation. The pre-expansion of the pipe mouth is to use the expansion device to pre-expand and process the workpiece to be processed, and the expansion operation is to replace the device and expand again after the pre-expansion of the pipe mouth is completed; However, this processing method will cause the following problems in the pre-expansion and expansion process of stainless steel pipe fittings: 1. There will be multiple discontinuous processing modes, which will cause cost waste of equipment, personnel, working hours, etc., increase the production cycle, and low production efficiency; 2. In the process of replacing the device, the operator needs to repeat the same 1. Repetitive labor such as disassembling and assembling molds, adjusting equipment, etc., not only increases labor intensity, but also increases the possibility of errors; 2. In the process of replacing the device, the workpiece needs to be removed from the equipment and re-clamped. During this process, the workpiece may fall to the ground many times, increasing the risk of contamination and damage, and also affecting production efficiency; 3. Moreover, due to interruptions and repeated actions in the processing process, the consistency and stability of the product may be affected, and the product quality may be reduced; 4. Due to the need to replace the device, the idle time of the equipment in the production process increases, resulting in reduced equipment utilization; 5. The discontinuity of the original process route limits the flexibility of the production line, making it difficult to adapt to the market demand for diversified products. Utility Model Content

[0003] The purpose of the utility model is to provide a hydraulic press forming tool for automobile pipe fittings, so as to solve the problems of the original pipe end forming processing technology of the welding pipe fittings of the automobile exhaust system proposed in the above-mentioned background technology, such as cost waste caused by replacing the device, low output efficiency, increased possibility of error due to repeated actions, increased risk of contamination and damage due to continuous falling of the processed parts, affecting product quality, low equipment utilization, poor production flexibility, etc.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic press forming tool for automobile pipe fittings, comprising a horizontal forming bottom plate and a fixed forming part at the center and forming guide parts on both sides are arranged on the top surface thereof, a forming discharge part is arranged inside the fixed forming part, and the forming guide part is connected to a movable forming part; the fixed forming part and the movable forming part are coaxially arranged; the fixed forming part comprises a vertically arranged hollow cylindrical pipe fitting fixing cylinder and a forming die arranged at the top end thereof; the movable forming part comprises a cylindrical forming column and a forming punch arranged at the bottom end thereof.

[0005] Preferably, the molding bottom plate is a rectangular flat plate and is provided with a concave cylindrical bottom plate groove at the center of its top surface, and a fixed molding part is provided in the bottom plate groove; the molding bottom plate is provided with a bottom plate through hole at the center of the bottom plate groove, and a molding unloading part is provided through the bottom plate through hole.

[0006] Preferably, four formed feet parallel to the short axis are evenly arranged on the bottom surface of the formed bottom plate along the long axis.

[0007] Preferably, the pipe fixing cylinder is placed in the bottom plate groove.

[0008] Preferably, the forming guide portion includes two guide bases which are symmetrically arranged with respect to the center point of the forming bottom plate, a vertical guide rod is arranged at the center of the top surface of each guide base, a guide sleeve which can slide axially thereof is sleeved on the top of each guide rod, a movable guide seat is arranged at the top of each guide sleeve, a movable top plate is jointly arranged at the top of the two movable guide seats, and a movable forming portion is arranged at the center of the bottom surface of the movable top plate.

[0009] Preferably, the molding unloading part includes a unloading push rod penetrating the through hole of the bottom plate, and the top end of the unloading push rod is connected to a unloading push block, and the unloading push block is cylindrical and placed on the inner side of the pipe fixing cylinder.

[0010] Preferably, an auxiliary guide frame is arranged on the top surface of the forming base plate, and the auxiliary guide frame includes an auxiliary guide base plate and an auxiliary guide top plate which are rectangular and facing each other vertically, and four auxiliary guide rods which are arranged together at the four corners between the two plates; circular holes are arranged at the centers of the auxiliary guide base plate and the auxiliary guide top plate, the auxiliary guide base plate is sleeved on the outer side of the fixed forming part and placed on the top surface of the forming base plate, and the auxiliary guide top plate is sleeved on the outer side of the movable forming part.

[0011] Preferably, the fixed forming portion, the forming punch and the unloading push block are all replaceable.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model solves a series of problems existing in the prior art by improving the molding structure of pipe fittings, so as to realize a more efficient, low-cost and low-labor-intensity production process; the whole molding process can be completed by one clamping, and there is no need to replace the device or mold in the middle, which significantly reduces the workload of the operator and the possible operating errors; the continuous operation of the molding process reduces the production interruption time, improves the overall production efficiency and reduces the cost of the unit product; the continuous production process reduces the product quality fluctuation caused by frequent replacement of molds or devices, and helps to maintain the consistency and stability of the product; the replaceable setting of the fixed molding part, the molding punch and the unloading push block allows the mold configuration to be quickly adjusted according to different production needs, which improves the versatility and flexibility of the mold; the utility model not only improves the production efficiency and product quality, but also provides a more economical and efficient production solution for the enterprise, which helps the enterprise to maintain its advantage in the fierce market competition. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an axonometric drawing;

[0015] Figure 2 for Figure 1 Main view;

[0016] Figure 3 for Figure 2 Left view;

[0017] Figure 4 for Figure 3 Sectional view of AA in the middle;

[0018] Figure 5 for Figure 4 Enlarged view of middle B;

[0019] Figure 6 for Figure 4 Enlarged view of middle C;

[0020] Figure 7 This is a schematic diagram of the pipe after forming;

[0021] In the figure: forming base plate -1, base plate groove -11, base plate through hole -12, forming foot -13, fixed forming part -2, pipe fixing cylinder -21, forming die -22, forming guide part -3, guide base -31, guide rod -32, guide sleeve -33, movable guide seat -34, movable top plate -35, movable forming part -4, forming column -41, forming punch -42, forming unloading part -5, unloading push rod -51, unloading push block -52, auxiliary guide frame -6, auxiliary guide base plate -61, auxiliary guide top plate -62, auxiliary guide rod -63. DETAILED DESCRIPTION

[0022] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution in the embodiments of the present utility model is clearly and completely described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Please refer to Figure 1-7 , Figure 1 It is an axonometric drawing; Figure 2 for Figure 1 Main view; Figure 3 for Figure 2 Left view; Figure 4 for Figure 3 Sectional view of AA in the middle; Figure 5 for Figure 4 Enlarged view of middle B; Figure 6 for Figure 4 Enlarged view of middle C; Figure 7 This is a schematic diagram of the pipe fitting after forming;.

[0024] The utility model provides a hydraulic press forming tool for automobile pipe fittings, which is used for forming welded pipe fittings of automobile exhaust systems. When forming, the pipe fittings can be press-fitted and formed by a hydraulic press after one clamping. The utility model comprises a horizontally arranged forming bottom plate 1, a fixed forming part 2 is arranged at the center of the top surface of the forming bottom plate 1, and a forming guide part 3 is arranged on the outer side thereof, the forming guide part 3 is connected with a movable forming part 4, the movable forming part 4 is connected with the movable hydraulic part of the hydraulic press, a forming unloading part 5 is arranged on the inner side of the fixed forming part 2 and is connected with a unloading mechanism, and is used for unloading the press-fitted pipe fittings; the fixed forming part 2 and the movable forming part 4 are coaxially arranged.

[0025] The molding base plate 1 is a rectangular flat plate and is provided with a concave cylindrical base plate groove 11 at the center of its top surface, and a fixed molding portion 2 is provided in the base plate groove 11; the molding base plate 1 is provided with a base plate through hole 12 at the center of the base plate groove 11, and a molding unloading portion 5 located on the inner side of the fixed molding portion 2 is provided through the base plate through hole 12; four molding feet 13 parallel to the short axis are evenly arranged on the bottom surface of the molding base plate 1 along its long axis.

[0026] The fixing and forming part 2 comprises a hollow cylindrical pipe fixing cylinder 21 vertically arranged in the bottom plate groove 11 , and a forming die 22 is arranged at the top end of the pipe fixing cylinder 21 .

[0027] The forming guide part 3 includes two guide bases 31, and the two guide bases 31 are symmetrically arranged with respect to the center point of the forming base plate 1. A vertical guide rod 32 is arranged at the center of the top surface of each guide base 31, and a guide sleeve 33 that can slide along its axial direction is sleeved on the top of each guide sleeve 33. A movable guide seat 34 is arranged at the top of each guide sleeve 33, and a movable top plate 35 is arranged at the top of the two movable guide seats 34. The movable top plate 35 is connected to the movable hydraulic part of the hydraulic press, and a movable forming part 4 is arranged at the center of the bottom surface of the movable top plate 35.

[0028] The movable forming part 4 includes a cylindrical forming column 41 , and a forming punch 42 is provided at the bottom end of the forming column 41 . The forming punch 42 is used in conjunction with the forming die 22 to press-fit the pipe end of the welding pipe fitting.

[0029] The molding unloading part 5 includes a unloading push rod 51 connected to the unloading mechanism and arranged in the bottom plate through hole 12. The top end of the unloading push rod 51 is connected to a unloading push block 52. The unloading push block 52 is cylindrical and placed on the inner side of the pipe fixing cylinder 21. When the pipe is press-fitted and formed, the pipe will directly fall on the top surface of the unloading push block 52.

[0030] In addition, an auxiliary guide frame 6 is arranged on the top surface of the forming base plate 1, and the auxiliary guide frame 6 includes an auxiliary guide base plate 61 and an auxiliary guide top plate 62 which are arranged opposite to each other in a rectangular shape, and four auxiliary guide rods 63 are arranged at the four corners between the two plates; circular holes are arranged at the centers of the auxiliary guide base plate 61 and the auxiliary guide top plate 62, so that the auxiliary guide base plate 61 can be sleeved on the outer side of the fixed forming part 2 and placed on the top surface of the forming base plate 1, and the auxiliary guide top plate 62 is sleeved on the outer side of the movable forming part 4.

[0031] In addition, the fixed forming part 2, the forming punch 42 and the unloading push block 52 are all replaceable, so that they can be applicable to the forming operation of welding pipe fittings of various specifications.

[0032] When in use, the welding pipe fittings of the automobile exhaust system are loaded into the interior of the fixed forming part 2, and then the hydraulic press drives the movable top plate 35 to drive the forming guide part 3 and the movable forming part 4 to move downward at the same time. During the downward movement, the guide sleeve 33 moves downward along the guide rod 32 to assist in guiding the movable forming part 4 to move vertically downward. During the downward movement of the movable forming part 4, the forming convex die 42 is inserted into the interior of the welding pipe fitting and the pipe wall of the pipe end is shaped with the assistance of the forming concave die 22. After the shaping is completed, the movable top plate 35 drives the forming guide part 3 and the movable forming part 4 to move upward at the same time so that the forming convex die 42 is separated from the welding pipe fitting; after separation, the forming unloading part 5 pushes the back upward to push the shaped pipe fitting upward to separate it from the fixed forming part 2, so that the welding pipe fitting can be unloaded and a qualified product can be obtained. The entire shaping operation process of the welding pipe fitting is completed once, which is simple and fast, while reducing labor intensity and improving production efficiency, and ensuring product quality.

[0033] The utility model solves a series of problems existing in the prior art by improving the molding structure of pipe fittings, so as to realize a more efficient, low-cost and low-labor-intensity production process; the whole molding process can be completed by one clamping, and there is no need to replace the device or mold in the middle, which significantly reduces the workload of the operator and the possible operating errors; the continuous operation of the molding process reduces the production interruption time, improves the overall production efficiency and reduces the cost of the unit product; the continuous production process reduces the product quality fluctuation caused by frequent replacement of molds or devices, and helps to maintain the consistency and stability of the product; the replaceable setting of the fixed molding part, the molding punch and the unloading push block allows the mold configuration to be quickly adjusted according to different production needs, thereby improving the versatility and flexibility of the mold; the utility model not only improves the production efficiency and product quality, but also provides a more economical and efficient production solution for the enterprise, which helps the enterprise to maintain its advantage in the fierce market competition.

[0034] Although the embodiments of the utility model have been shown and described, it is obvious that the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, it can be understood by ordinary technicians in this field that all other embodiments obtained by making various changes, modifications, substitutions and variations to these embodiments without departing from the principle and spirit of the utility model and without making creative work, all belong to the scope of protection of the utility model.

Claims

1. A hydraulic press forming tool for automobile pipe fittings, characterized in that: The invention comprises a horizontal molding bottom plate (1) and a fixed molding part (2) at the center and molding guide parts (3) at both sides are arranged on the top surface thereof; a molding discharge part (5) is arranged inside the fixed molding part (2); the molding guide part (3) is connected to a movable molding part (4); the fixed molding part (2) and the movable molding part (4) are arranged coaxially; the fixed molding part (2) comprises a vertically arranged hollow cylindrical pipe fixing cylinder (21) and a molding concave mold (22) arranged at the top end thereof; the movable molding part (4) comprises a cylindrical molding column (41) and a molding convex mold (42) arranged at the bottom end thereof.

2. The hydraulic press forming tool for automobile pipe fittings according to claim 1, characterized in that: The molding bottom plate (1) is a rectangular flat plate and is provided with a concave cylindrical bottom plate groove (11) at the center of its top surface, and a fixed molding portion (2) is provided in the bottom plate groove (11); the molding bottom plate (1) is provided with a bottom plate through hole (12) at the center of the bottom plate groove (11), and a molding discharge portion (5) is provided through the bottom plate through hole (12).

3. The hydraulic press forming tool for automobile pipe fittings according to claim 2, characterized in that: Four formed feet (13) are evenly arranged on the bottom surface of the formed bottom plate (1) along its long axis and parallel to its short axis.

4. The hydraulic press forming tool for automobile pipe fittings according to claim 3 is characterized in that: The pipe fixing cylinder (21) is placed in the bottom plate groove (11).

5. The hydraulic press forming tool for automobile pipe fittings according to claim 4, characterized in that: The molding guide portion (3) comprises two guide bases (31) which are symmetrically arranged with respect to the center point of the molding base plate (1); a vertical guide rod (32) is arranged at the center of the top surface of each guide base (31); a guide sleeve (33) which can slide along its axial direction is sleeved on the top of each guide rod (32); a movable guide seat (34) is arranged at the top of each guide sleeve (33); a movable top plate (35) is arranged at the top of the two movable guide seats (34); and a movable molding portion (4) is arranged at the center of the bottom surface of the movable top plate (35).

6. The hydraulic press forming tool for automobile pipe fittings according to claim 5, characterized in that: The molding unloading portion (5) comprises a unloading push rod (51) penetrating the bottom plate through hole (12), the top end of the unloading push rod (51) is connected to a unloading push block (52), and the unloading push block (52) is cylindrical and is placed on the inner side of the pipe fixing cylinder (21).

7. The hydraulic press forming tool for automobile pipe fittings according to claim 6, characterized in that: An auxiliary guide frame (6) is arranged on the top surface of the molding base plate (1), and the auxiliary guide frame (6) comprises an auxiliary guide base plate (61) and an auxiliary guide top plate (62) which are rectangular and face each other vertically, and four auxiliary guide rods (63) which are arranged at four corners between the two plates; circular holes are arranged at the centers of the auxiliary guide base plate (61) and the auxiliary guide top plate (62); the auxiliary guide base plate (61) is sleeved on the outside of the fixed molding part (2) and placed on the top surface of the molding base plate (1), and the auxiliary guide top plate (62) is sleeved on the outside of the movable molding part (4).

8. The hydraulic press forming tool for automobile pipe fittings according to claim 7, characterized in that: The fixed forming part (2), the forming convex die (42) and the unloading push block (52) are all replaceable.

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