Device for automatically stripping punch of punching machine

Abstract

The utility model relates to the technical field of punch stripping, in particular to an automatic stripping device for a punch of a punching machine. According to the technical scheme, the device comprises a driving plate, a mounting plate and a pressure stabilizing plate, the middle position of the bottom of the driving plate is fixed to the mounting plate, the pressure stabilizing plate is mounted below the mounting plate, buffer springs are mounted between the pressure stabilizing plate and the mounting plate, a punch is fixed to the bottom of the mounting plate, and the lower end of the punch is aligned to the bottom of the pressure stabilizing plate and is in sliding connection with the pressure stabilizing plate; a stripping ejector pin is mounted in the middle of the bottom of the punch, a mounting groove is formed in the position, corresponding to the stripping ejector pin, in the punch, and a mounting block is mounted in the mounting groove. According to the utility model, the compression spring is used for pushing the stripping ejector pin to strip, the stripping is carried out immediately after punching is finished, the efficiency is high, the performance is stable, the material blocking phenomenon caused by untimely stripping is effectively solved, a powerful guarantee is provided for automatic production of punching equipment, the compression stroke of the ejection spring can be freely adjusted, and then proper ejection elastic force is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of punch stripping, in particular to a device for automatic stripping of punches of punch presses. Background Art

[0002] Punch stripping refers to the process of separating the stamped part from the die through the design and operation of the punch or die during the stamping process. Stamping is a commonly used metal processing method used to process metal sheets or strips into parts of desired shapes.

[0003] Automatic material removal by the punch can greatly improve production efficiency. Currently, there are two main technical means: the first is to rely on gravity and dynamic inertia to remove the waste; the second is to install an air nozzle on the punch to remove the waste by blowing compressed air.

[0004] Among them, the waste material is removed by itself due to the material's own gravity and the inertia of the die movement, but the material removal is not complete. For workpieces with soft and sticky materials such as copper and aluminum, the waste material stuck to the punch and is difficult to fall off, resulting in serious material jamming and inability to achieve continuous production.

[0005] The method of installing an air nozzle and using compressed air to blow away the waste is greatly affected by the compressed air pressure. If the pressure is unstable and the blowing force is insufficient, the waste cannot be removed, resulting in material jamming, which causes production interruption and requires manpower to check, affecting production efficiency. In addition, since the compressed air needs to be blown continuously, there is a serious waste of compressed air. Utility Model Content

[0006] The utility model aims to solve the problems existing in the background technology and proposes a device for automatically removing materials from a punch head of a punch press.

[0007] The technical solution of the utility model: a device for automatic material stripping of a punch of a punch press, comprising a driving plate, a mounting plate and a pressure stabilizing plate, wherein the middle position of the bottom of the driving plate is fixed to the mounting plate, the pressure stabilizing plate is mounted below the mounting plate, a buffer spring is mounted between the pressure stabilizing plate and the mounting plate, a punch is fixed to the bottom of the mounting plate, the lower end of the punch is aligned with the bottom of the pressure stabilizing plate and is slidably connected to the pressure stabilizing plate, a material stripping ejector is mounted at the middle position of the bottom of the punch, a mounting groove is provided in the punch at a position corresponding to the material stripping ejector, a mounting block is mounted in the mounting groove, an ejection spring is mounted between the mounting block and the upper end of the material stripping ejector, and a driving component for driving the mounting block to rise and fall is arranged in the mounting plate.

[0008] Preferably, the driving assembly includes a driving groove, which is opened in the mounting plate and located directly above the mounting groove, the upper end of the mounting block is located in the driving groove, a threaded rod is rotatably connected in the driving groove, and the bottom of the threaded rod is threadedly connected in the mounting block.

[0009] Preferably, a driven bevel gear is fixed on the threaded rod, the inner side wall of the driving groove is rotatably connected to a driving bevel gear meshing with the driven bevel gear, a driving shaft is fixed on the driving bevel gear, and one outer end of the driving shaft passes through the mounting plate and is fixed with a rocker.

[0010] Preferably, a baffle is fixed in the driving groove, a through hole is provided on the baffle at a position corresponding to the threaded rod, and the baffle is located above the mounting block.

[0011] Preferably, the mounting block is a square structure, and its size matches the size of the mounting slot, ensuring that the mounting block can only move up and down in the mounting slot.

[0012] Preferably, a hydraulic cylinder is installed on the upper end of the driving plate, and the hydraulic cylinder is used to drive the driving plate to move up and down.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects: a compression spring is used to push the ejector pin to eject the material, and the material is ejected immediately after punching, with high efficiency and stable performance. It effectively solves the problem of material jamming caused by untimely ejection, provides a strong guarantee for the punching equipment to realize automated production, and can freely adjust the compression stroke of the ejector spring to provide a suitable ejection elastic force. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the front cutaway structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 The enlarged structural diagram at A in the middle;

[0016] Figure 3 This is a schematic diagram of the mounting block and ejector spring structure of the utility model.

[0017] Figure numerals: 1, driving plate; 11, hydraulic cylinder; 2, mounting plate; 3, pressure stabilizing plate; 4, punch; 41, ejector pin; 42, mounting groove; 43, mounting block; 44, ejector spring; 5, buffer spring; 6, driving groove; 61, threaded rod; 62, driven bevel gear; 63, driving bevel gear; 64, rocker; 65, baffle. DETAILED DESCRIPTION

[0018] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0019] Example

[0020] like Figure 1-3As shown, the utility model proposes a device for automatic stripping of a punch of a punch press, comprising a driving plate 1, a mounting plate 2 and a pressure stabilizing plate 3. The driving plate 1 is fixed to the mounting plate 2 at the middle position at the bottom, the pressure stabilizing plate 3 is mounted below the mounting plate 2, a buffer spring 5 is mounted between the pressure stabilizing plate 3 and the mounting plate 2, a punch 4 is fixed to the bottom of the mounting plate 2, the lower end of the punch 4 is aligned with the bottom of the pressure stabilizing plate 3, and is slidably connected to the pressure stabilizing plate 3, a stripping ejector pin 41 is mounted at the middle position at the bottom of the punch 4, a mounting groove 42 is provided in the punch 4 and at a position corresponding to the stripping ejector pin 41, a mounting block 43 is mounted in the mounting groove 42, an ejection spring 44 is mounted between the mounting block 43 and the upper end of the stripping ejector pin 41, a driving component for driving the mounting block 43 to rise and fall is arranged in the mounting plate 2, the mounting block 43 is a square structure, and its size matches that of the mounting groove 42, and a hydraulic cylinder 11 is mounted at the upper end of the driving plate 1.

[0021] The driving assembly includes a driving groove 6, which is opened in the mounting plate 2 and is located directly above the mounting groove 42. The upper end of the mounting block 43 is located in the driving groove 6. A threaded rod 61 is rotatably connected in the driving groove 6. The bottom of the threaded rod 61 is threadedly connected in the mounting block 43. A driven bevel gear 62 is fixed on the threaded rod 61. A driving bevel gear 63 meshing with the driven bevel gear 62 is rotatably connected to the inner side wall of the driving groove 6. A driving shaft is fixed on the driving bevel gear 63. One end of the driving shaft passes through the mounting plate 2 and is fixed with a rocker 64. A baffle 65 is fixed in the driving groove 6. A through hole is opened on the baffle 65 at a position corresponding to the threaded rod 61. The baffle 65 is located above the mounting block 43. The rotation of the rocker 64 can drive the driving bevel gear 63 to rotate. Under the transmission of the driven bevel gear 62, the threaded rod 61 is driven to rotate, thereby realizing the change of the position of the mounting block 43.

[0022] In this embodiment, the output end of the hydraulic cylinder 11 is used to drive the driving plate 1 for stamping. After the pressure stabilizing plate 3 and the workpiece are against each other, the punch 4 can be used to continuously press down to complete the stamping operation. During the stamping process, the ejector pin 41 will enter the mounting groove 42 while compressing the ejector spring 44. Conversely, after the stamping is completed, the ejector spring 44 is reset to eject the material attached to the surface of the punch 4, thereby achieving the purpose of automatic material stripping. During this process, in order to increase or reduce the ejection pressure of the spring, the mounting block 43 can be moved to change the deformation of the ejector spring 44 to ensure that the material is not ejected under the premise of completely ejecting the attached material. During this process, the driving bevel gear 63 can be driven to rotate by the rotation of the rocker 64, and the threaded rod 61 can be driven to rotate under the transmission of the driven bevel gear 62, thereby achieving the position change of the mounting block 43. When the mounting block 43 moves downward, it can provide an initial extrusion to the ejector spring 44, thereby increasing the subsequent elastic pressure, otherwise it will reduce the elastic pressure of the ejector spring 44.

[0023] The above-mentioned specific embodiments are only several preferred embodiments of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above-mentioned embodiments, those skilled in the art can make various alternative improvements and combinations to the above-mentioned specific embodiments.

Claims

1. A device for automatically removing material from a punch of a punch press, comprising a drive plate (1), a mounting plate (2) and a voltage stabilizing plate (3), characterized in that: The middle position of the bottom of the driving plate (1) is fixed to the mounting plate (2); the voltage stabilizing plate (3) is mounted below the mounting plate (2); a buffer spring (5) is mounted between the voltage stabilizing plate (3) and the mounting plate (2); a punch (4) is fixed to the bottom of the mounting plate (2); the lower end of the punch (4) is aligned with the bottom of the voltage stabilizing plate (3) and is slidably connected to the voltage stabilizing plate (3); a stripping ejector pin (41) is mounted at the middle position of the bottom of the punch (4); a mounting groove (42) is provided in the punch (4) at a position corresponding to the stripping ejector pin (41); a mounting block (43) is mounted in the mounting groove (42); an ejection spring (44) is mounted between the mounting block (43) and the upper end of the stripping ejector pin (41); and a driving component for driving the mounting block (43) to rise and fall is provided in the mounting plate (2).

2. The device for automatic material removal of a punch press according to claim 1, characterized in that: The driving assembly comprises a driving groove (6), the driving groove (6) being opened in the mounting plate (2) and being located directly above the mounting groove (42), the upper end of the mounting block (43) being located in the driving groove (6), a threaded rod (61) being rotatably connected in the driving groove (6), and the bottom of the threaded rod (61) being threadedly connected in the mounting block (43).

3. The device for automatic material removal of a punch press according to claim 2, characterized in that: A driven bevel gear (62) is fixed on the threaded rod (61), a driving bevel gear (63) meshing with the driven bevel gear (62) is rotatably connected to the inner wall of the driving groove (6), a driving shaft is fixed on the driving bevel gear (63), and an outer end of the driving shaft passes through the mounting plate (2) and is fixed with a rocker (64).

4. The device for automatic material removal of a punch press according to claim 2, characterized in that: A baffle (65) is fixed in the driving groove (6), a through hole is provided on the baffle (65) at a position corresponding to the threaded rod (61), and the baffle (65) is located above the mounting block (43).

5. The device for automatic material removal of a punch press according to claim 1, characterized in that: The installation block (43) is a square structure, and its size is compatible with the size of the installation slot (42).

6. The device for automatic material removal of a punch press according to claim 1, characterized in that: A hydraulic cylinder (11) is installed on the upper end of the driving plate (1).

Images