Stamping head capable of being rapidly replaced for plate shearing machine

Abstract

The utility model discloses a punching head capable of being replaced quickly for a shearing and punching machine, which comprises a fixing plate, the bottom of the fixing plate is fixedly connected with a fixing seat, the center of the bottom of the fixing seat is provided with a fixing cavity, a connecting column is arranged in the fixing cavity, and the bottom end of the connecting column is fixedly connected with a punch. Connecting grooves are vertically formed in the surface of the connecting column, the two connecting grooves are symmetrically formed, an arc-shaped groove is horizontally formed in the surface of the connecting column, one end of the arc-shaped groove is smoothly connected with the connecting groove, and a clamping device is fixedly connected to the position, close to the bottom, in the fixing base; and one end of the clamping device extends into the fixing cavity. The utility model relates to the technical field of plate shearing machine equipment. The stamping head capable of being rapidly replaced for the plate shearing machine is easy, convenient and rapid to install and firm in fixation, and the problems that a traditional stamping head is complex in installation, inconvenient to replace and likely to loosen in the machining process are effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of shearing machine equipment, specifically to a quick-change punch head for a shearing machine. Background Technology

[0002] Shearing machines are commonly used in the metal processing industry, primarily for shearing sheet metal. Traditional shearing machines have a relatively simple function, only capable of linear shearing. However, in actual production, many workpieces not only require shearing but also the machining of round, square, or other shaped holes in specific locations. For example, when manufacturing cabinets, shelves, or pipe supports, workers typically need to first use a shearing machine to cut the sheet metal and then transfer it to a punch press or drilling machine for drilling. This step-by-step operation is not only inefficient but also increases equipment purchase costs and floor space requirements, placing a significant economic burden, especially on small and medium-sized processing plants. To address this issue, some manufacturers have attempted to integrate punching functionality into shearing machines. A common approach is to add a punching module near the shearing machine's blade holder, using hydraulic or mechanical drive to achieve punching. However, punching operations require changing different punches depending on the hole shape. Traditional punch heads are mostly fixed with bolts, making installation cumbersome and time-consuming. While some punches with quick-release designs shorten replacement time, they are prone to loosening under high-frequency impact loads, affecting processing accuracy and safety. Therefore, it is particularly important to design a shearing machine punch head that is simple in structure, easy to install, and stable and reliable. Utility Model Content

[0003] To address the aforementioned shortcomings, this invention provides a quick-change punch head for shearing machines, which is not only easy and quick to install but also securely fixed, effectively solving the problems of complex installation, inconvenient replacement, and potential loosening during processing of traditional punch heads.

[0004] To achieve the above objectives, the present invention provides a quick-change punching head for a punching machine, comprising a fixed plate, a fixed base fixedly connected to the bottom of the fixed plate, a fixed cavity provided in the center of the bottom of the fixed base, a connecting column provided in the fixed cavity, a punch fixedly connected to the bottom end of the connecting column, a vertical connecting groove provided on the surface of the connecting column, two connecting grooves provided and symmetrically arranged, an arc-shaped groove provided on the surface of the connecting column, one end of the arc-shaped groove smoothly connected to the connecting groove, a clamping device fixedly connected in the fixed base near the bottom, two clamping devices provided and symmetrically arranged, one end of the clamping device extending into the fixed cavity, the connecting column being inserted into the fixed cavity by aligning one end of the clamping device through the connecting groove and rotating, and then fixed in the fixed cavity by the arc-shaped groove;

[0005] The clamping device includes a fixed cylinder, a slide block is slidably connected inside the fixed cylinder, an L-shaped clamping rod is fixedly connected to the top of the slide block, the L-shaped clamping rod extends to the top of the fixed cylinder and one end extends into the fixed cavity, a pull rod is fixedly connected to the bottom of the slide block, a spring is provided between the bottom of the slide block and the bottom of the inner wall of the fixed cylinder, and the bottom end of the pull rod extends to the bottom of the fixed cylinder and is provided with a pull ring.

[0006] Preferably, the top of the connecting column is provided with a fan-shaped limiting groove, and the top of the fixing cavity is provided with a fan-shaped positioning block adapted to the fan-shaped limiting groove.

[0007] Preferably, the central angle of the arc-shaped groove is 90 degrees, and the central angle of the fan-shaped limiting groove is 90 degrees.

[0008] Preferably, the diameter of the punch is 5-50mm, and the punch and the connecting post are an integral structure.

[0009] Preferably, a positioning hole is provided at the top center of the connecting column, a positioning block adapted to the positioning hole is provided at the top center of the fixing cavity, the positioning block is in the shape of an inverted cone, and a positioning ring is provided on the surface of the connecting column and on the side near the punch.

[0010] Preferably, the connecting post is aligned with one end of the clamping device through the connecting groove, inserted into the fixed cavity, and after the pull ring is pulled to rotate 90 degrees, it is fixed in the fixed cavity through the arc-shaped groove.

[0011] Preferably, adhesive is provided at the bottom of the fixing seat and on one side of the pull ring.

[0012] The present invention adopts the above-mentioned technical solution, and its beneficial effects include: the punching machine uses a quick-change punching head, and the connecting column connected to the punch is aligned with one end of the clamping device through the connecting groove, inserted into the fixed cavity, and rotated to complete the fixation through the arc groove, thereby improving the efficiency of disassembly and assembly; the fan-shaped limiting groove and fan-shaped positioning block prevent the punch from rotating during processing, ensuring the stability of the connection; the positioning hole, inverted conical positioning block, and positioning ring ensure the accurate installation position of the punch and guarantee the processing precision. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the structure of the connecting column of this utility model inserted into the fixing cavity;

[0016] Figure 4This is a schematic diagram of the connecting column and punch of this utility model;

[0017] Figure 5 This is a schematic diagram of the clamping device of this utility model.

[0018] In the diagram: 1-Fixed plate, 2-Fixed seat, 3-Fixed cavity, 4-Connecting column, 5-Punch, 6-Connecting groove, 7-Arc groove, 8-Fan-shaped limiting groove, 9-Clamping device, 91-Fixed cylinder, 92-Slide seat, 93-L-shaped clamping rod, 94-Pull rod, 95-Spring, 96-Pull ring, 10-Fan-shaped positioning block, 11-Positioning hole, 12-Positioning block, 13-Positioning ring, 14-Adhesive. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Example 1: Please refer to Figure 1-5 This utility model provides a technical solution: a quick-change punching head for a shearing and punching machine, including a fixing plate 1. The surface of the fixing plate 1 is provided with fixing holes to fix the fixing plate 1 to one side of the shearing machine blade holder. The bottom of the fixing plate 1 is fixedly connected to a fixing seat 2. The bottom center of the fixing seat 2 is provided with a fixing cavity 3. A connecting post 4 is provided in the fixing cavity 3. A punch 5 is fixedly connected to the bottom end of the connecting post 4. The surface of the connecting post 4 is vertically provided with a connecting groove 6. There are two connecting grooves 6, which are symmetrically arranged. The surface of the connecting post 4 is horizontally provided with an arc-shaped groove 7. The central angle of the arc-shaped groove 7 is 90 degrees. One end of the arc-shaped groove 7 is smoothly connected to the connecting groove 6, ensuring that one end of the clamping rod can smoothly enter the arc-shaped groove 7 from the connecting groove 6.

[0021] A clamping device 9 is fixedly connected inside the fixed base 2 and near the bottom. There are two clamping devices 9 arranged symmetrically. One end of the clamping device 9 extends into the fixed cavity 3. The connecting column 4 is aligned with one end of the clamping device 9 through the connecting groove 6, inserted into the fixed cavity 3, and after rotating, it is fixed in the fixed cavity 3 through the arc groove 7.

[0022] The clamping device 9 includes a fixed cylinder 91, a slide block 92 is slidably connected inside the fixed cylinder 91, an L-shaped clamping rod 93 is fixedly connected to the top of the slide block 92, the L-shaped clamping rod 93 extends above the fixed cylinder 91 and one end extends into the fixed cavity 3, a pull rod 94 is fixedly connected to the bottom of the slide block 92, a spring 95 is provided between the bottom of the slide block 92 and the bottom of the inner wall of the fixed cylinder 91, and the bottom end of the pull rod 94 extends below the fixed cylinder 91 and is provided with a pull ring 96.

[0023] Specifically, when installing the connecting post 4, align the connecting groove 6 with the bottom of the L-shaped locking rod 93 and insert the connecting post 4 vertically upwards until one end of the L-shaped locking rod 93 moves to the side close to the arc-shaped groove 7. At this time, pull the pull ring 96, which drives the slide block 92 to move through the pull rod 94, so that one end of the L-shaped locking rod 93 is close to one end of the arc-shaped groove 7. Then rotate the connecting post 4 so that one end of the L-shaped locking rod 93 slides into the arc-shaped groove 7. Release the pull ring 96. At this time, under the action of the spring 95, one end of the L-shaped locking rod 93 exerts an upward force on the connecting post 4, thus fixing the connecting post 4.

[0024] The top of the connecting column 4 is provided with a sector-shaped limiting groove 8, and the top of the fixing cavity 3 is provided with a sector-shaped positioning block 10 that is adapted to the sector-shaped limiting groove 8. The central angle of the sector-shaped limiting groove 8 is 90 degrees. When the connecting column 4 is installed, it is aligned with one end of the clamping device 9 through the connecting groove 6 and inserted into the fixing cavity 3. After pulling the pull ring 96 to rotate 90 degrees, it is fixed in the fixing cavity 3 through the arc-shaped groove 7. Before rotating to 90 degrees, the bottom end of the sector-shaped positioning block 10 is in contact with the top of the connecting column 4. After rotating 90 degrees, the sector-shaped positioning block 10 falls into the sector-shaped limiting groove 8, and the top of the connecting column 4 is in contact with the top of the fixing cavity 3. The sector-shaped limiting groove 8 and the sector-shaped positioning block 10 prevent the connecting column 4 from rotating during the processing, thus ensuring the stability of the connecting column 4.

[0025] The diameter of punch 5 is 5-50mm. Punch 5 and connecting post 4 are an integral structure. Punch 5 is available in various specifications to meet different punching requirements. For example, the diameter of punch 5 can be set to 5mm, 10mm, 15mm and so on, increasing sequentially.

[0026] A positioning hole 11 is provided at the top center of the connecting column 4, and a positioning block 12 adapted to the positioning hole 11 is provided at the top center of the fixed cavity 3. The positioning block 12 is in the shape of an inverted cone. A positioning ring 13 is provided on the surface of the connecting column 4 and on the side close to the punch 5. The positioning ring 13 is in the shape of a frustum. A conical surface adapted to the positioning ring 13 is provided at the bottom of the fixed seat and at the fixed cavity 3, which ensures that the center of the connecting column 4 is located at the center of the fixed cavity 3, thus ensuring the stability of the processing.

[0027] Adhesive 14 is provided at the bottom of the fixing seat 2 and on one side of the pull ring 96 to ensure that the pull ring 96 is tightly attached to the bottom of the fixing seat 2 during processing, thus avoiding interference. Alternatively, the pull ring 96 can be made detachable and removed after installation.

[0028] When the punch 5 needs to be replaced, first pull the pull ring 96. This will cause the connecting post 4 to move downwards along with one end of the L-shaped locking rod 93 until the sector-shaped positioning block 10 leaves the sector-shaped limiting groove 8. Then, twist the connecting post 4 in the opposite direction to release the pull ring 96 until one end of the L-shaped locking rod 93 moves into the connecting groove 6. Then, remove the connecting post 4 with the punch 5 vertically downwards. Then, install the punch 5 of another specification according to the aforementioned method.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] The above description is merely a preferred embodiment of the prior art for fixing and installing this utility model, and is not intended to limit this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A quick-change punch head for a shearing machine, comprising a fixed plate (1), characterized in that: The bottom of the fixing plate (1) is fixedly connected to a fixing seat (2). A fixing cavity (3) is provided in the center of the bottom of the fixing seat (2). A connecting column (4) is provided in the fixing cavity (3). A punch (5) is fixedly connected to the bottom end of the connecting column (4). A connecting groove (6) is vertically provided on the surface of the connecting column (4). There are two connecting grooves (6) and they are symmetrically arranged. An arc groove (7) is horizontally provided on the surface of the connecting column (4). One end of the arc groove (7) is smoothly connected to the connecting groove (6). A clamping device (9) is fixedly connected in the fixing seat (2) near the bottom. There are two clamping devices (9) and they are symmetrically arranged. One end of the clamping device (9) extends into the fixing cavity (3). The connecting column (4) is aligned with one end of the clamping device (9) through the connecting groove (6), inserted into the fixing cavity (3), and rotated before being fixed in the fixing cavity (3) through the arc groove (7). The clamping device (9) includes a fixed cylinder (91), a slide block (92) is slidably connected inside the fixed cylinder (91), an L-shaped clamping rod (93) is fixedly connected to the top of the slide block (92), the L-shaped clamping rod (93) extends above the fixed cylinder (91) and one end extends into the fixed cavity (3), a pull rod (94) is fixedly connected to the bottom of the slide block (92), a spring (95) is provided between the bottom of the slide block (92) and the bottom of the inner wall of the fixed cylinder (91), and the bottom end of the pull rod (94) extends below the fixed cylinder (91) and is provided with a pull ring (96).

2. The quick-change punch head for a shearing machine according to claim 1, characterized in that: The top of the connecting column (4) is provided with a fan-shaped limiting groove (8), and the top of the fixing cavity (3) is provided with a fan-shaped positioning block (10) that is adapted to the fan-shaped limiting groove (8).

3. A quick-change punching head for a shearing machine according to claim 2, characterized in that: The central angle of the arc groove (7) is 90 degrees, and the central angle of the sector-shaped limiting groove (8) is 90 degrees.

4. A quick-change punching head for a shearing machine according to claim 1, characterized in that: The diameter of the punch (5) is 5-50mm, and the punch (5) and the connecting column (4) are an integral structure.

5. A quick-change punching head for a shearing machine according to claim 1, characterized in that: The connecting column (4) has a positioning hole (11) at the top center, and the fixing cavity (3) has a positioning block (12) adapted to the positioning hole (11) at the top center. The positioning block (12) is in the shape of an inverted cone. The connecting column (4) has a positioning ring (13) on the surface and near the punch (5).

6. A quick-change punching head for a shearing machine according to claim 3, characterized in that: The connecting column (4) is aligned with one end of the clamping device (9) through the connecting groove (6) and inserted into the fixed cavity (3). After pulling the pull ring (96) and rotating it 90 degrees, it is fixed in the fixed cavity (3) through the arc groove (7).

7. A quick-change punching head for a shearing machine according to claim 1, characterized in that: Adhesive (14) is provided at the bottom of the fixing seat (2) and on one side of the pull ring (96).

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