Hydraulic stamping device

Abstract

The utility model relates to the technical field of hydraulic machine equipment, and provides a hydraulic punching device which comprises an upper punch and a lower punch which are matched with each other, the upper punch comprises an upper rod part and an upper head part, and the top of the upper head part is in threaded connection in a mounting groove in the bottom of the upper rod part. According to the utility model, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the damaged upper head part and the damaged lower head part can be replaced by rotating the upper head part and the lower head part, and the working table surface does not need to be disassembled in the replacement process, so that the working efficiency is improved. And one end of the lower head part and one end of the upper head part are each of a tapered cylindrical step structure, assembling is convenient, two parts of the upper punch and two parts of the lower punch can be conveniently attached to each other, and the situation that the upper punch and the lower punch are damaged due to the fact that stress faces are not uniform in the punching process can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic press equipment, in particular to a hydraulic punching device. Background Art

[0002] The forging punch of the hydraulic press is a wearing part and needs to be replaced every time a certain amount of workpiece is generated. Since the existing punch is an integral structure, the entire work surface needs to be disassembled during disassembly, which takes a long time to replace and is labor-intensive. Therefore, we propose a hydraulic stamping device. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the deficiencies in the prior art, the present invention provides a hydraulic punching device to solve the above problems in the prior art.

[0005] (2) Technical solution

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a hydraulic punching device, comprising an upper punch and a lower punch arranged in cooperation with each other, the upper punch comprising an upper rod and an upper head, the top of the upper head being threadedly connected to a mounting groove at the bottom of the upper rod, and a disassembly groove with a non-circular inner cavity being formed at one end of the upper head away from the upper rod;

[0007] The lower punch includes a lower rod and a lower head. The bottom of the lower head is threadedly connected to the installation groove of the lower rod. The end of the lower head facing away from the lower rod is provided with a non-circular disassembly protrusion on the outer wall. When the upper punch and the lower punch are in contact, the disassembly protrusion completely falls into the disassembly groove.

[0008] Furthermore, the top of the upper head is a tapered cylindrical step structure, and the outer wall of at least one step in the step structure is a threaded structure. The mounting groove opened at the bottom of the upper rod is adapted to the step structure at the top of the upper head, and all surfaces of the top of the upper head are in contact with the bottom of the upper rod.

[0009] Furthermore, the bottom of the lower head is a tapered cylindrical step structure, and the outer wall of at least one step in the step structure is a threaded structure. The mounting groove opened on the top of the lower rod is adapted to the step structure at the bottom of the lower head, and all surfaces of the top of the lower head are in contact with the bottom of the lower rod.

[0010] Furthermore, the top of the upper rod is provided with an upper transition rod for connecting it to the stamping device, the outer wall of the upper rod is provided with an upper anvil for providing support and positioning for it, the upper anvil is provided with an upper guide ring sleeved on the outer wall of the upper rod, and a forming die base is provided below the upper anvil. The bottom of the forming die base is provided with a forming die around the outer wall of the upper rod, and the bottom of the forming die is provided with an upper cutting ring around the outer wall of the upper rod, and the upper cutting ring is located in the mold cavity of the forming die.

[0011] Furthermore, a pressure ring is provided between the outer wall of the forming mold and the forming mold base.

[0012] Furthermore, the bottom of the lower rod is provided with a lower transition rod for connecting it to the stamping device, the outer wall of the lower rod is provided with a lower anvil for providing support and positioning for it, the lower anvil is provided with a lower guide ring sleeved on the outer wall of the lower rod, the top of the lower anvil is provided with an anvil for carrying the processing object, and a lower cutting ring is provided around the lower head in the anvil.

[0013] Furthermore, a waterproof cover is provided on the outer wall of the connection between the lower transition rod and the lower rod portion.

[0014] (3) Beneficial effects

[0015] The embodiment of the present utility model provides a hydraulic punching device having the following beneficial effects:

[0016] 1. The damaged upper and lower heads can be replaced by rotating them, and there is no need to dismantle the work surface during the replacement process, which reduces labor intensity and increases replacement efficiency.

[0017] 2. One end of the lower head and the upper head are both set as a tapered cylindrical step structure, which is convenient for assembly and makes it easy for the two parts of the upper punch to fit together and the two parts of the lower punch to fit together, which can avoid uneven force surfaces of the upper punch and the lower punch during the stamping process, resulting in damage.

[0018] 3. Place the heated annular workpiece on the anvil, and then use the upper punch and the lower punch to punch the workpiece together to form a ring-shaped finished product in the forming mold without multiple hammering, so as to achieve the effect of quickly completing the stamping process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic cross-sectional view of the overall structure of the utility model;

[0020] Figure 2 It is a schematic cross-sectional view of the upper punch and lower punch structure of the utility model.

[0021] In the figure: 10, upper punch; 101, upper rod; 102, upper head; 103, disassembly groove; 11, upper transition rod; 12, upper anvil; 13, upper guide ring; 14, forming die base; 15, forming die; 16, upper cutting ring; 17, pressure ring; 20, lower punch; 201, lower rod; 202, lower head; 203, disassembly protrusion; 21, lower transition rod; 22, waterproof cover; 23, lower anvil; 24, lower guide ring; 25, anvil block; 26, lower cutting ring. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts shall fall within the scope of protection of the present invention.

[0023] Refer to the attached Figure 2 , a hydraulic stamping device, including an upper punch 10 and a lower punch 20 that are arranged to cooperate with each other, the upper punch 10 includes an upper rod 101 and an upper head 102, the top of the upper head 102 is threadedly connected to the mounting groove at the bottom of the upper rod 101, and the end of the upper head 102 away from the upper rod 101 is provided with a non-circular disassembly groove 103 with an inner cavity, and an L-shaped disassembly rod is used to insert its short end into the non-circular disassembly groove 103, and then the L-shaped disassembly rod is rotated to rotate the upper head 102 and separate the upper head 102 from the upper rod 101, so that the damaged upper head 102 can be replaced easily, and the replacement process does not require disassembly of the work surface, which reduces labor intensity and increases replacement efficiency;

[0024] The lower punch 20 includes a lower rod 201 and a lower head 202. The bottom of the lower head 202 is threadedly connected to the installation groove of the lower rod 201. The end of the lower head 202 facing away from the lower rod 201 is provided with a non-circular disassembly protrusion 203 on the outer wall. When the upper punch 10 and the lower punch 20 are in contact, the disassembly protrusion 203 falls completely into the disassembly groove 103. Use an L-shaped disassembly rod to sleeve its short end onto the outer wall of the non-circular disassembly protrusion 203, and then rotate the L-shaped disassembly rod to rotate the lower rod 201 and separate the lower rod 201 and the lower head 202, which is convenient for replacing the damaged lower punch 20. The replacement process does not require disassembling the work surface, which reduces labor intensity and increases replacement efficiency.

[0025] In this embodiment, the top of the upper head 102 is a tapered cylindrical step structure, and the outer wall of at least one step in its step structure is a threaded structure. The upper head 102 and the upper rod 101 can be separated and installed by rotating the upper head 102. The installation groove opened at the bottom of the upper rod 101 is adapted to the step structure at the top of the upper head 102. The top surfaces of the upper head 102 are all in contact with the bottom of the upper rod 101. The bottom of the upper rod 101 is adapted to the top of the upper head 102, which can avoid uneven force surface of the upper head 102 during the stamping process, resulting in damage.

[0026] In this embodiment, the bottom of the lower head 202 is a tapered cylindrical step structure, and the outer wall of at least one step in its step structure is a threaded structure. By rotating the lower head 202, the lower head 202 and the lower rod 201 can be separated and installed. The installation groove opened on the top of the lower rod 201 is adapted to the step structure at the bottom of the lower head 202. The top surfaces of the lower head 202 are all in contact with the bottom of the lower rod 201. The top of the lower rod 201 is adapted to the bottom of the lower head 202, which can avoid uneven force surface of the lower head 202 during the stamping process, resulting in damage to it.

[0027] Refer to the attached Figure 1 The top of the upper rod 101 is provided with an upper transition rod 11 for connecting it to the stamping device, and the outer wall of the upper rod 101 is provided with an upper anvil 12 for providing support and positioning for it, and the upper anvil 12 is provided with an upper guide ring 13 sleeved on the outer wall of the upper rod 101, and a forming die base 14 is provided below the upper anvil 12. The bottom of the forming die base 14 is provided with a forming die 15 around the outer wall of the upper rod 101, and the bottom of the forming die 15 is provided with an upper cutting ring 16 around the outer wall of the upper rod 101. The upper cutting ring 16 is located in the mold cavity of the forming die 15. When the upper punch 10 is installed on the stamping device through the upper transition rod 11, the upper anvil 12 supports and positions the upper punch 10. During the stamping process, the workpiece is processed and formed with the cooperation of the forming die 15 and the upper cutting ring 16.

[0028] In this embodiment, a pressure ring 17 is provided between the outer wall of the forming mold 15 and the forming mold base 14 to protect the outer wall of the forming mold 15 and prevent the inner cavity from cracking due to excessive pressure.

[0029] In this embodiment, the bottom of the lower rod 201 is provided with a lower transition rod 21 for connecting it to the stamping device, and the outer wall of the lower rod 201 is provided with a lower anvil 23 for providing support and positioning for it. The lower anvil 23 is provided with a lower guide ring 24 sleeved on the outer wall of the lower rod 201, and the top of the lower anvil 23 is provided with an anvil plate 25 for carrying the processing object, and a lower cutting ring 26 is provided around the lower head 202 in the anvil plate 25. The lower punch 20 is connected to the stamping device through the lower transition rod 21, and the lower anvil 23 provides support and positioning for the lower punch 20. The heated annular workpiece is placed on the anvil plate 25, and then the upper punch 10 and the lower punch 20 are cooperated to stamp, so that the workpiece is formed in the forming mold 15 and forms an annular processed product, without the need for multiple hammering, so as to achieve the effect of quickly completing the stamping process.

[0030] In this embodiment, a waterproof cover 22 is provided on the outer wall of the connection between the lower transition rod 21 and the lower rod portion 201 to prevent water from entering the connection and causing rust, which would affect the life of the device.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0032] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features thereof can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A hydraulic punching device, comprising an upper punch (10) and a lower punch (20) arranged in cooperation with each other, characterized in that: The upper punch (10) comprises an upper rod (101) and an upper head (102), the top of the upper head (102) is threadedly connected to the mounting groove at the bottom of the upper rod (101), and the end of the upper head (102) facing away from the upper rod (101) is provided with a disassembly groove (103) with a non-circular inner cavity; The lower punch (20) comprises a lower rod (201) and a lower head (202); the bottom of the lower head (202) is threadedly connected to the mounting groove of the lower rod (201); an end of the lower head (202) facing away from the lower rod (201) is provided with a disassembly protrusion (203) with a non-circular outer wall; when the upper punch (10) and the lower punch (20) are in contact, the disassembly protrusion (203) completely falls into the disassembly groove (103).

2. A hydraulic punching device according to claim 1, characterized in that: The top of the upper head (102) is a tapered cylindrical step structure, and the outer wall of at least one step in the step structure is a threaded structure. The mounting groove opened at the bottom of the upper rod (101) is adapted to the step structure at the top of the upper head (102), and each surface of the top of the upper head (102) is in contact with the bottom of the upper rod (101).

3. A hydraulic punching device according to claim 1 or 2, characterized in that: The bottom of the lower head (202) is a tapered cylindrical step structure, and the outer wall of at least one step in the step structure is a threaded structure. The mounting groove opened on the top of the lower rod (201) is adapted to the step structure at the bottom of the lower head (202), and all surfaces of the top of the lower head (202) are in contact with the bottom of the lower rod (201).

4. A hydraulic punching device according to claim 1 or 2, characterized in that: The top of the upper rod (101) is provided with an upper transition rod (11) for connecting it to the punching device, the outer wall of the upper rod (101) is provided with an upper anvil (12) for providing support and positioning for it, the upper anvil (12) is provided with an upper guide ring (13) sleeved on the outer wall of the upper rod (101), a forming die base (14) is provided below the upper anvil (12), the bottom of the forming die base (14) is provided with a forming die (15) around the outer wall of the upper rod (101), the bottom of the forming die (15) is provided with an upper cutting ring (16) around the outer wall of the upper rod (101), and the upper cutting ring (16) is located in the die cavity of the forming die (15).

5. A hydraulic punching device according to claim 4, characterized in that: A pressure ring (17) is provided between the outer wall of the forming die (15) and the forming die base (14).

6. A hydraulic punching device according to claim 3, characterized in that: The bottom of the lower rod (201) is provided with a lower transition rod (21) for connecting it to the punching device, the outer wall of the lower rod (201) is provided with a lower anvil (23) for providing support and positioning for it, the lower anvil (23) is provided with a lower guide ring (24) sleeved on the outer wall of the lower rod (201), the top of the lower anvil (23) is provided with an anvil plate (25) for carrying the processing object, and the anvil plate (25) is provided with a lower cutting ring (26) around the lower head (202).

7. A hydraulic punching device according to claim 6, characterized in that: The outer wall of the connection between the lower transition rod (21) and the lower rod portion (201) is provided with a waterproof cover (22).

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