Improved bottom valve pressing die for automobile shock absorber

Abstract

The utility model relates to the technical field of powder metallurgy dies, in particular to an improved bottom valve pressing die for an automobile shock absorber, which comprises a die body, the die body comprises a female die, an upper die assembly and a lower die assembly are respectively and correspondingly arranged above and below the female die, and a core rod assembly is arranged in the upper die assembly and the lower die assembly in a penetrating manner; the upper die assembly comprises an upper punch, and a second upper punch is arranged at the outer end of the upper punch. The lower die assembly comprises a lower punch, and a second lower punch is arranged at the outer end of the lower punch. The core rod assembly comprises a center hole and a side hole, and a center core rod and a side edge core rod are correspondingly arranged in the center hole and the side hole respectively. A positioning guide mechanism and a sealing mechanism are further arranged on the mold body in a matched manner; the die is stable in structure and safe and reliable to use, defects in the forming process are effectively reduced, the forming precision and quality are improved, and the service life is prolonged; and the accurate mold structure ensures the consistency of the size and the performance of each bottom valve, the operation is simple and convenient, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of powder metallurgy mold technology, and in particular to an improved bottom valve pressing mold for automobile shock absorbers. Background Technology

[0002] Automotive shock absorbers are crucial components of the automotive suspension system. Their primary function is to suppress impacts and vibrations caused by uneven road surfaces, improving ride comfort and vehicle stability. The bottom valve, as a vital part of the shock absorber, directly impacts its performance. However, the unreasonable and mismatched structure of traditional automotive shock absorber bottom valve pressing molds affects the molding precision of the bottom valve, easily generating defects such as burrs and flash during the molding process, thus affecting the appearance quality and sealing performance of the bottom valve. Furthermore, with the rapid development of the automotive industry, the production efficiency of traditional pressing molds needs improvement. Utility Model Content

[0003] To address some of the problems existing in the prior art, this utility model provides an improved bottom valve pressing mold for automotive shock absorbers.

[0004] To achieve the above objectives, this utility model provides an improved bottom valve pressing mold for automotive shock absorbers, comprising a mold body, the mold body including a female mold, an upper mold assembly and a lower mold assembly respectively disposed above and below the female mold, and a core rod assembly passing through the upper mold assembly and the lower mold assembly; the upper mold assembly including an upper die punch, the outer end of the upper die punch being provided with an upper second die punch; the lower mold assembly including a lower die punch, the outer end of the lower die punch being provided with a lower second die punch; the core rod assembly including a central hole and a side hole configured to match the central hole; a central core rod and a side core rod respectively disposed in the central hole and the side hole; the mold body is also provided with a positioning guide mechanism and a sealing mechanism.

[0005] In operation, the female mold is installed on the worktable, the upper die punch is installed above the female mold, and the lower die punch is installed below the female mold. Then, the upper and lower die punches are respectively installed on the outer sides of the upper and lower die punches. Next, a sealing sleeve is fitted between the female mold and the lower die punches. The first and second wear-resistant coatings effectively improve wear resistance. Afterwards, the installation of each mold component is checked for firmness and smooth movement to ensure normal mold operation. The relative positions and fitting accuracy between the upper die punch, upper die punch, lower die punch, lower die punch, center core rod, and side core rods are adjusted through calibration. The groove is calibrated and checked to ensure that each component operates accurately during the pressing process. After the check is completed, the blank to be processed is prepared and placed. The matching pressure equipment is started, so that the upper die assembly moves downward and the upper second die punch presses into the lower second die punch. During the pressing process, the upper and lower die punches are first pressed together. Under the pressure, the blank is squeezed and filled into the cavity of the mold, forming the surface shape of the bottom valve blank, and the blank is formed in one go. After pressing is completed, the pressure equipment drives the upper die assembly to move upward, so that the upper die punch and the upper second die punch disengage from the lower die punch and the lower second die punch. Finally, the formed bottom valve blank is taken out from the female mold.

[0006] The beneficial effects of this utility model are: an improved bottom valve pressing mold for automotive shock absorbers. This utility model has a stable structure, is safe and reliable to use, effectively reduces defects in the molding process, improves molding accuracy and quality, and extends service life; the precise mold structure ensures the consistency of the size and performance of each bottom valve, is easy to operate, and improves production efficiency.

[0007] As a further improvement of this utility model, in order to provide guidance for the movement of the central core rod and the side core rod, and at the same time ensure the pressing accuracy of the bottom valve; the positioning and guiding mechanism includes a positioning hole provided on the female mold, and a positioning pin is installed in the positioning hole; a plurality of positioning holes and positioning pins are provided; the positioning and guiding mechanism also includes a connecting guiding device, which is provided between the central core rod and the side core rod in the lower die punch.

[0008] As a further improvement of this utility model, in order to prevent oil leakage during the pressing process and ensure the sealing of the mold, the sealing mechanism includes a sealing sleeve, which is disposed between the female mold and the lower second die punch; a first wear-resistant coating and a second wear-resistant coating are also provided on the outer end face of the lower second die punch.

[0009] As a further improvement of this utility model, in order to accurately calibrate the shape and size of the bottom valve after pressing and improve the dimensional consistency of each product, a calibration groove corresponding to the position of the inner end surface of the second lower die punch is provided on the inner side wall of the lower die punch, and a calibration line is provided on the inner end surface of the second die punch, and the calibration groove and the calibration line are collinear.

[0010] As a further improvement of this utility model, in order to provide a clear reference for the installation position of the mold, increase the support force, and improve the structural strength, a connecting block is provided between the upper two-die punch and the lower two-die punch, and the upper and lower end surfaces of the connecting block respectively engage with the end faces of the upper two-die punch and the lower two-die punch.

[0011] As a further improvement of this utility model, in order to better perform mold pressing and facilitate forming, the bottom ends of the upper die punch, the upper second die punch, the lower die punch, and the lower second die punch are all provided with protruding end faces; the protruding end face of the bottom end of the upper second die punch is lower than the protruding end face of the bottom end of the upper die punch; the protruding end face of the bottom end of the lower second die punch is higher than the protruding end face of the bottom end of the lower die punch. Attached Figure Description

[0012] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle.

[0015] Among them, 1 is the female mold, 2 is the positioning pin, 3 is the sealing sleeve, 4 is the upper die punch, 5 is the upper second die punch, 6 is the center hole, 7 is the center core rod, 8 is the side hole, 9 is the side core rod, 10 is the lower second die punch, 11 is the lower die punch, 12 is the connecting block, 13 is the positioning hole, 14 is the calibration groove, 15 is the connecting guide device, 16 is the first wear-resistant coating, and 17 is the second wear-resistant coating. Detailed Implementation

[0016] like Figure 1-2An improved bottom valve pressing mold for an automotive shock absorber is shown, comprising a mold body, the mold body including a female mold 1, an upper mold assembly and a lower mold assembly respectively disposed above and below the female mold 1, and a core rod assembly passing through the upper mold assembly and the lower mold assembly; the upper mold assembly includes an upper die punch 4, the outer end of which is provided with an upper second die punch 5; the lower mold assembly includes a lower die punch 11, the outer end of which is provided with a lower second die punch 10; the core rod assembly includes a central hole 6 and a side hole 8 that mates with the central hole 6, the central hole 6 and the side hole 8 respectively being provided with a central core rod 7 and a side core rod 9; the mold body is also provided with a positioning guide mechanism and a sealing mechanism; the positioning guide mechanism includes a positioning hole 13 disposed on the female mold 1, the positioning hole 13 being fitted with a positioning pin 2; several positioning holes 13 and positioning pins 2 are provided; the positioning guide mechanism also includes a connecting guide device 15, the connecting guide... The device 15 is disposed between the central core rod 7 and the side core rod 9 inside the lower die punch 11; the sealing mechanism includes a sealing sleeve 3, which is disposed between the female die 1 and the lower second die punch 10; a first wear-resistant coating 16 and a second wear-resistant coating 17 are also disposed on the outer end face of the lower second die punch 10; a calibration groove 14 corresponding to the position of the inner end surface of the lower second die punch 10 is disposed on the inner side wall of the lower die punch 11, and a calibration line is disposed on the inner end surface of the second die punch 10, the calibration groove 14... 4. Collinear with the calibration line; A connecting block 12 is provided between the upper second die punch 5 and the lower second die punch 10, and the upper and lower end surfaces of the connecting block 12 respectively engage with the end faces of the upper second die punch 5 and the lower second die punch 10; The bottom ends of the upper die punch 4, the upper second die punch 5, the lower die punch 11 and the lower second die punch 10 are all provided with protruding end faces; The protruding end face of the bottom end of the upper second die punch 5 is lower than the protruding end face of the bottom end of the upper die punch 4; The protruding end face of the bottom end of the lower second die punch 10 is higher than the protruding end face of the bottom end of the lower die punch 11.

[0017] In operation, the female mold 1 is installed on the worktable, the upper die punch 4 is installed above the female mold 1, and the lower die punch 11 is installed below the female mold 1. Then, the upper second die punch 5 and the lower second die punch 10 are respectively installed on the outer sides of the upper die punch 4 and the lower die punch 11. Next, the sealing sleeve 3 is fitted between the female mold 1 and the lower second die punch 10. The first wear-resistant coating 16 and the second wear-resistant coating 17 can effectively improve the wear resistance and effectively prevent the sealing sleeve 3 from sliding up and down. After that, check whether the installation of each part of the mold is firm and whether the movement is smooth to ensure that the mold can work normally. Adjust the relationship between the upper die punch 4, the upper second die punch 5, the lower die punch 11, the lower second die punch 10, the central core rod 7, and the side core rod 9. The position and fitting accuracy are calibrated and checked through calibration groove 14 to ensure that each component operates accurately during the pressing process. After the check is completed, the blank to be processed is prepared and placed. The matching pressure equipment is started, so that the upper die assembly moves downward and the upper second die punch 5 presses into the lower second die punch 10. During the pressing process, the upper die punch 4 and the lower die punch 11 are first pressed together. The blank is squeezed and filled into the cavity of the mold under pressure, forming the surface shape of the bottom valve blank, and the blank is formed in one go. After pressing is completed, the pressure equipment drives the upper die assembly to move upward, so that the upper die punch 4 and the upper second die punch 5 disengage from the lower die punch 11 and the lower second die punch 10. Finally, the formed bottom valve blank is taken out from the female mold 1.

[0018] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within its protection scope.

Claims

1. An improved bottom valve pressing mold for an automotive shock absorber, comprising a mold body, the mold body including a female mold (1), an upper mold assembly and a lower mold assembly respectively disposed above and below the female mold (1), and a core rod assembly further permeating the upper mold assembly and the lower mold assembly; characterized in that, The upper mold assembly includes an upper die punch (4), and an upper second die punch (5) is provided at the outer end of the upper die punch (4); the lower mold assembly includes a lower die punch (11), and a lower second die punch (10) is provided at the outer end of the lower die punch (11); the core rod assembly includes a central hole (6) and a side hole (8) that matches the central hole (6), and a central core rod (7) and a side core rod (9) are respectively provided in the central hole (6) and the side hole (8); the mold body is also provided with a positioning guide mechanism and a sealing mechanism.

2. The improved bottom valve pressing mold for automotive shock absorbers according to claim 1, characterized in that: The positioning and guiding mechanism includes a positioning hole (13) provided on the female mold (1), and a positioning pin (2) is installed in the positioning hole (13); there are several positioning holes (13) and positioning pins (2); the positioning and guiding mechanism also includes a connecting guiding device (15), which is located between the central core rod (7) and the side core rod (9) in the lower die punch (11).

3. An improved bottom valve pressing mold for automotive shock absorbers according to claim 1, characterized in that: The sealing mechanism includes a sealing sleeve (3), which is disposed between the female mold (1) and the lower second die punch (10); a first wear-resistant coating (16) and a second wear-resistant coating (17) are also disposed on the outer end face of the lower second die punch (10).

4. An improved bottom valve pressing mold for automotive shock absorbers according to claim 1, characterized in that: The inner sidewall of the lower die punch (11) is provided with a calibration groove (14) corresponding to the position of the inner end surface of the lower second die punch (10). A calibration line is provided on the inner end surface of the second die punch (10), and the calibration groove (14) is collinear with the calibration line.

5. An improved bottom valve pressing mold for automotive shock absorbers according to claim 1, characterized in that: A connecting block (12) is provided between the upper second die punch (5) and the lower second die punch (10). The upper and lower end surfaces of the connecting block (12) respectively engage with the end faces of the upper second die punch (5) and the lower second die punch (10).

6. An improved bottom valve pressing mold for automotive shock absorbers according to claim 1, characterized in that: The bottom ends of the upper die punch (4), the upper second die punch (5), the lower die punch (11), and the lower second die punch (10) are all provided with protruding end faces; the protruding end face of the bottom end of the upper second die punch (5) is lower than the protruding end face of the bottom end of the upper die punch (4); the protruding end face of the bottom end of the lower second die punch (10) is higher than the protruding end face of the bottom end of the lower die punch (11).

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