Punching device facilitating punch replacement and punch replacement tool

Abstract

The utility model belongs to the technical field of maintenance of high-strength steel production equipment, and particularly relates to a punching device with a punch convenient to replace and a punch replacing tool, the punching device comprises a base, a machine frame and a punch assembly, the machine frame and the punch assembly are connected to the base, a driving piece is installed on the upper portion of the machine frame, and the driving piece is connected with the punch assembly. The punch replacing tool is used for driving the punch assembly to get close to or get away from a machined workpiece in the axial direction of the punch assembly, the punch assembly comprises a mounting plate, the upper portion of the mounting plate is connected with a driving piece, the lower portion of the mounting plate is connected with a punch rod, and the other end of the punch rod is in threaded connection with a punch. A locating pin corresponding to the locating hole is arranged on a disc body of the guide disc, a round hole for the punching head to pass through is formed in the center of the guide disc, the locating pin on the guide disc correspondingly extends into the locating hole in the punch in use, then the handle is held to rotate the guide disc to drive the punch to rotate, and the punch is screwed off from the punch rod. And the punch can be quickly replaced.

Description

Technical Field

[0001] The utility model belongs to the technical field of maintenance of high-strength steel production equipment, and specifically relates to a punching device and a punch replacement tool which are convenient for replacing a punch. Background Art

[0002] High-strength steel is increasingly used in the automotive manufacturing industry. Using laser welders to weld high-strength steel is a necessary condition for ensuring the continuous operation of the unit. After strips of different thicknesses and steel grades are welded together, the parameters of the next process are inconsistent. This requires automatic identification of the head and tail positions of each roll of strip, so the small round holes punched by the punching die are the only source of information to distinguish different steel rolls to ensure the continuous production of the unit. As the strength of the product increases, the wear of the punching die increases. When there are burrs on the punched holes, the die must be replaced.

[0003] A punch is a metal part on a stamping die in a mechanical tool. It is also called a punch bar, a punch needle or a punch. It is installed on a stamping die to perform continuous blanking, punching and breaking operations, so that the processed material is separated or plastically deformed, thereby obtaining the required finished product or semi-finished product. The punch and the punch bar together constitute a punching assembly, which is connected to the power assembly of the punching machine and acts on the workpiece under the drive of the power assembly to achieve punching.

[0004] In order to solve the problem of poor adaptability of existing punch connectors, the patent document with application number 201820375268.7 discloses a punch connector with high interchangeability and a matching punch. The top of the connector is connected to the power output end of the punching machine, and a fixing part is provided at the bottom. The fixing part cooperates with the connecting punch, and the contact surface between the bottom of the connector and the top of the connecting punch is parallel to the horizontal plane; the fixing part includes a screw installed on the punch connector, and the screw is perpendicular to the contact surface.

[0005] Regarding the above-mentioned related technologies, since the high hardness of high-strength steel causes the punching die to wear faster, the replacement cycle is relatively frequent and the punch needs to be replaced. When replacing the punch, it is necessary to adjust multiple screws fixed on the punch connector in sequence until the screws no longer fix the connected punch, and then replace the punch. When installing the punch, it is also necessary to adjust multiple screws in sequence until the connected punch is fixed. The entire replacement process takes a long time and is inefficient. For this reason, an improved punching device and a punch replacement tool that are convenient for replacing the punch are designed. Utility Model Content

[0006] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a punching device and a punch replacement tool which are convenient for replacing a punch, so as to solve the above-mentioned problems in the background technology.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] A punching device that is easy to replace a punch, comprising a base, a frame connected to the base, and a punch assembly, wherein a driving member is installed on the upper part of the frame, and the driving member is connected to the punch assembly and is used to drive the punch assembly to approach or move away from a workpiece along its own axial direction, and the punch assembly comprises a mounting plate, the upper part of the mounting plate is connected to the driving member, the lower part of the mounting plate is connected to a punch rod, and the other end of the punch rod is threadedly connected to the punch.

[0009] Furthermore, the outer wall of the lower end of the punch rod is provided with a thread, and the punch head and the punch rod are threadedly connected.

[0010] Further, the punch comprises:

[0011] A connecting disk, the connecting disk is in the shape of a disk, a connecting tube is connected to the center of the upper part of the connecting disk, the inner wall of the connecting tube is provided with threads, and a plurality of positioning holes are opened in the lower part of the connecting disk along its circumferential direction;

[0012] A punching head is integrally connected to the center of the lower part of the connecting plate.

[0013] Furthermore, it also includes a processing table arranged in the center of the base, and the processing table is provided with punching holes adapted to the punching head.

[0014] Furthermore, the frame includes four columns connected to the four corners of the base and a top plate connected to the top of the columns, and a through hole is opened in the center of the top plate;

[0015] The driving member comprises a hydraulic cylinder and a mounting seat, wherein the hydraulic cylinder is fixedly mounted on the top plate via the mounting seat, and a piston rod of the hydraulic cylinder passes through a through hole and is fixedly connected to the mounting plate of the punch assembly.

[0016] By adopting the above-mentioned structural design, the punching device that is easy to replace the punch includes a punch assembly driven by a driving member, wherein the punch assembly includes a punch rod fixedly connected to the piston rod of the hydraulic cylinder, the outer wall of the lower end of the punch rod is provided with a thread, and the punch and the punch rod are threadedly connected, wherein the punch includes a connecting cylinder threadedly connected to the punch rod, the lower part of the connecting cylinder is connected to a connecting disk, and the connecting disk is integrally connected to a punching head. Driven by the hydraulic cylinder, the punching head punches the steel strip on the processing table, and the punching head punches into the punching hole to complete the punching of the steel strip. As the strength of the product becomes higher and higher, the wear of the punching die increases. When there are burrs on the punched circular hole, the punch must be replaced. Since the punch and the punch rod are threadedly connected, and the outer wall of the punch is relatively smooth, it needs to be replaced with the help of a replacement tool. For this purpose, a corresponding punch and punch replacement tool are designed. A positioning hole is provided at the lower part of the connecting disk of the punch,

[0017] A punch replacement tool is used to replace a punch. The punch replacement tool comprises a guide disc. A positioning pin is arranged on the upper part of the guide disc along its circumferential direction. A circular hole is opened in the center of the guide disc. A handle is integrally connected to the side wall of the guide disc.

[0018] Furthermore, there are four positioning pins on the guide disc, and the four positioning pins are arranged in a circular array with the center of the guide disc as the center.

[0019] By adopting the above-mentioned structural design, the punch replacement tool includes a guide disc, a positioning pin corresponding to the positioning hole is arranged on the disc body of the guide disc, and a circular hole for the punching head to pass through is arranged in the center of the guide disc. When in use, the positioning pin on the guide disc is inserted into the positioning hole on the punch, and then the handle is held to rotate the guide disc to drive the punch to rotate, and the punch is unscrewed from the punch rod, so that the punch can be quickly replaced.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The punching device that is easy to replace the punch includes a punch assembly driven by a driving member, wherein the punch assembly includes a punch rod fixedly connected to the piston rod of the hydraulic cylinder, the outer wall of the lower end of the punch rod is provided with a thread, the punch and the punch rod are threadedly connected, wherein the punch includes a connecting cylinder threadedly connected to the punch rod, the lower part of the connecting cylinder is connected to a connecting disk, and a punching head is integrally connected to the connecting disk. Under the drive of the hydraulic cylinder, the punching head punches the strip steel on the processing table, and the punching head punches into the punching hole to complete the punching of the strip steel once. As the strength of the product becomes higher and higher, the wear of the punching die increases. When there are burrs on the punched round hole, the punch must be replaced. Since the punch and the punch rod are threadedly connected and the outer wall of the punch is relatively smooth, it needs to be replaced with the help of a replacement tool;

[0022] 2. The punch replacement tool includes a guide disc, on the disc body of which a positioning pin corresponding to the positioning hole is provided, and in the center of the guide disc a round hole for the punching head to pass through is provided. When in use, the positioning pin on the guide disc is inserted into the positioning hole on the punch correspondingly, and then the handle is held to rotate the guide disc to drive the punch to rotate, and the punch is unscrewed from the punch rod, so that the punch can be quickly replaced. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of a punching device that is convenient for replacing a punch in the utility model;

[0024] Figure 2 The utility model is a punching device that is convenient for replacing the punch head;

[0025] Figure 3 This is a schematic diagram of the punch structure of a punching device that is easy to replace the punch in the utility model;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of a punching device and a punch replacement tool for facilitating the replacement of a punch in the utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the replacement tool in the utility model (viewing angle 1);

[0028] Figure 6 This is a schematic diagram of the structure of the replacement tool in the utility model (viewing angle 2);

[0029] The reference numerals in the drawings of the specification include:

[0030] A base (1), a processing table (2), a punching hole (21), a frame (3), a column (31), a top plate (32), a through hole (321), a driving member (4), a hydraulic cylinder (41), a piston rod (411), a mounting seat (42), a punch assembly (5), a mounting plate (51), a punch rod (52), a punch (53), a connecting plate (531), a positioning hole (5311), a connecting tube (532), a punching head (533), a replacement tool (6), a guide disc (61), a round hole (611), a handle (62), and a positioning pin (63). DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0033] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Embodiment 1:

[0036] like Figure 1-6 Specifically, a punching device for convenient replacement of a punch comprises a base 1, a frame 3 connected to the base 1, and a punch assembly 5, a driving member 4 is installed on the upper part of the frame 3, the driving member 4 is connected to the punch assembly 5, and is used to drive the punch assembly 5 to approach or move away from a workpiece along its own axis, and the punch assembly 5 comprises a mounting plate 51, the upper part of the mounting plate 51 is connected to the driving member 4, the lower part of the mounting plate 51 is connected to a punch rod 52, and the other end of the punch rod 52 is threadedly connected to a punch 53.

[0037] In this example, the outer wall of the lower end of the punch rod 52 is provided with threads, and the punch 53 and the punch rod 52 are threadedly connected.

[0038] In this example, the punch 53 includes: a connecting disk 531, which is in the shape of a disc, and a connecting tube 532 is connected to the center of the upper part of the connecting disk 531, and the inner wall of the connecting tube 532 is provided with a thread, and the lower part of the connecting disk 531 is provided with a plurality of positioning holes 5311 along its circumferential direction; a punching head 533, and the punching head 533 is integrally connected to the center of the lower part of the connecting disk 531.

[0039] In this example, a processing table 2 is further included, which is arranged in the center of the base 1 . A punching hole 21 matching with the punching head 533 is formed on the processing table 2 .

[0040] In this example, the frame 3 includes four columns 31 connected to the four corners of the base 1 and a top plate 32 connected to the top of the columns 31, and a through hole 321 is opened in the center of the top plate 32; the driving member 4 includes a hydraulic cylinder 41 and a mounting seat 42, the hydraulic cylinder 41 is fixedly mounted on the top plate 32 through the mounting seat 42, and the piston rod 411 of the hydraulic cylinder 41 passes through the through hole 321 and is fixedly connected to the mounting plate 51 of the punch assembly 5. The punching device which is convenient for replacing the punch comprises a punch assembly 5 driven by a driving member 4, wherein the punch assembly 5 comprises a punch rod 52 fixedly connected to a piston rod 411 of a hydraulic cylinder 41, the outer wall of the lower end of the punch rod 52 is provided with a thread, and the punch 53 is threadedly connected to the punch rod 52, wherein the punch 53 comprises a connecting cylinder 532 threadedly connected to the punch rod 52, the lower part of the connecting cylinder 532 is connected with a connecting disk 531, and a punching head 533 is integrally connected to the connecting disk 531. Driven by the hydraulic cylinder 41, the punching head 533 punches the strip steel on the processing table 2, and the punching head 533 punches into the punching hole 21 to complete a punching of the strip steel. As the strength of the product becomes higher and higher, the wear of the punching die increases. When there are burrs on the punched circular hole, the punch 53 must be replaced. Since the punch 53 is threadedly connected to the punch rod 52 and the outer wall of the punch 53 is relatively smooth, it needs to be replaced with the help of a replacement tool. For this purpose, a corresponding punch 53 and a punch replacement tool are designed. The lower part of the connecting plate 531 of the punch 53 is provided with a positioning hole 5311.

[0041] A punch replacement tool is used to replace a punch 53. The punch replacement tool includes a guide disc 61. A positioning pin 63 is arranged on the upper part of the guide disc 61 along its circumferential direction. A circular hole 611 is opened in the center of the guide disc 61. A handle 62 is integrally connected to the side wall of the guide disc 61. There are four positioning pins 63 on the guide disc 61, and the four positioning pins are arranged in a circular array with the center of the guide disc 61 as the center. Considering the spatial structure of the installation position of the punch 53, the length of the handle 62 is designed to be 300mm. In order to ensure the strength of the tool, 45 steel with a diameter of 30mm is selected. The thickness of the guide disc 61 is 5mm, and its inner and outer circle dimensions have tolerance requirements to ensure that the guide disc 61 slides up and down smoothly during use. The side of the joint where the guide disc 61 is connected to the handle 62 is designed to be at an angle of 120° to ensure that the tool will not interfere with other equipment when rotating. The positioning pin 63 has a height of 10 mm and a diameter of 5 mm. Four positioning pins 63 are arranged in a circular array in the circumferential direction. When replacing the mold, the four positioning holes 5311 of the punch 53 can be smoothly clamped by holding the guide disc 61 with the hand, so that the mold can be easily replaced by turning the handle.

[0042] Working principle: The punch replacement tool includes a guide disc 61, a positioning pin 63 corresponding to the positioning hole 5311 is arranged on the disc body of the guide disc 61, and a circular hole 611 for the punch head 533 to pass through is arranged in the center of the guide disc 61. When in use, the positioning pin 63 on the guide disc 61 is correspondingly extended into the positioning hole 5311 on the punch 53, and then the handle 62 is held to rotate the guide disc 61 to drive the punch 53 to rotate, and the punch 53 is unscrewed from the punch rod 52, so that the punch 53 can be quickly replaced.

[0043] The above are only embodiments of the utility model, and the circuits, electronic components and modules involved are all prior art, which can be fully implemented by those skilled in the art. It is needless to say that the content protected by this application does not involve improvements to software and methods. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the prior art in the field, and have the ability to apply conventional experimental means before the date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A punching device for facilitating replacement of a punch, comprising a base (1), a frame (3) connected to the base (1), and a punch assembly (5), wherein a driving member (4) is installed on the upper part of the frame (3), and the driving member (4) is connected to the punch assembly (5) and is used to drive the punch assembly (5) to approach or move away from a workpiece along its own axial direction, characterized in that: The punch assembly (5) comprises a mounting plate (51), the upper part of the mounting plate (51) is connected to the driving member (4), the lower part of the mounting plate (51) is connected to a punch rod (52), the other end of the punch rod (52) is threadedly connected to a punch (53); the outer wall of the lower end of the punch rod (52) is provided with a thread, and the punch (53) and the punch rod (52) are threadedly connected; the punch (53) comprises: A connecting disk (531), the connecting disk (531) is in the shape of a circular disk, a connecting tube (532) is connected to the center of the upper part of the connecting disk (531), the inner wall of the connecting tube (532) is provided with threads, and a plurality of positioning holes (5311) are opened in the lower part of the connecting disk (531) along its circumferential direction; A punching head (533), wherein the punching head (533) is integrally connected to the center of the lower part of the connecting plate (531).

2. A punching device for facilitating replacement of a punch as claimed in claim 1, characterized in that: It also includes a processing table (2) arranged in the center of the base (1), and a punching hole (21) adapted to the punching head (533) is provided on the processing table (2).

3. A punching device for facilitating replacement of a punch as claimed in claim 1, characterized in that: The frame (3) comprises four columns (31) connected to the four corners of the base (1) and a top plate (32) connected to the top of the columns (31), and a through hole (321) is provided in the center of the top plate (32); The driving member (4) comprises a hydraulic cylinder (41) and a mounting seat (42); the hydraulic cylinder (41) is fixedly mounted on the top plate (32) via the mounting seat (42); a piston rod (411) of the hydraulic cylinder (41) passes through a through hole (321) and is fixedly connected to a mounting plate (51) of the punch assembly (5).

4. A punch replacement tool for replacing the punch (53) according to any one of claims 1 to 3, characterized in that: The punch replacement tool comprises a guide disc (61), a positioning pin (63) is arranged on the upper part of the guide disc (61) along its circumferential direction, a circular hole (611) is opened in the center of the guide disc (61), and a handle (62) is integrally connected to the side wall of the guide disc (61).

5. A punch replacement tool according to claim 4, characterized in that: There are four positioning pins (63) on the guide disc (61), and the four positioning pins are arranged in a circular array with the center of the guide disc (61) as the center.

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