Workpiece clamping mechanism for punching machine

Abstract

The workpiece clamping mechanism for the punching machine comprises a punching die, the punching die is installed on a punching station of the punching machine, the punching machine is provided with the workpiece clamping mechanism for the punching die, the workpiece clamping mechanism comprises a base, an electric push rod, a guide column, a spring, an extrusion plate and a positioning plate, the base is installed on the punching machine, the electric push rod and the guide column are both installed on the base, and the positioning plate is installed on the base. The extrusion plate is located on one side of the stamping die and installed on the guide column, the push rod end of the electric push rod and the extrusion plate are oppositely arranged, the guide column is sleeved with the spring, the two ends of the spring tension the base and the extrusion plate respectively, and the positioning plate is installed on the other side of the stamping die. According to the workpiece clamping mechanism, use of an air cylinder is avoided, the requirement for use conditions is not high, an electric push rod drives an extrusion plate to move towards a punching die along a guide column, the extrusion plate is matched with a positioning plate to clamp a workpiece on the punching die, a punching machine can conduct punching conveniently, a spring can reset the extrusion plate, and the electric push rod is not used for being connected with the extrusion plate; and the clamping mechanism is convenient to disassemble, assemble and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece clamping, in particular to a workpiece clamping mechanism for a punching machine. Background Art

[0002] A punch press is a stamping press. Stamping production is mainly for sheet metal. Through the stamping die (die), blanking, punching, forming, drawing, trimming, fine blanking, shaping, riveting and extrusion can be made, etc., which are widely used in various fields. For example, the switches, sockets, cups, cupboards, plates, computer cases, and even missile aircraft we use... There are many accessories that can be produced by a punch press through a die. The material is placed on the die, and the machine applies pressure to deform it. The reaction force caused by the force applied to the material during processing is absorbed by the punch machine body.

[0003] When stamping a workpiece, it is usually manually sent to the stamping station of the punch press and fixed by hand to facilitate stamping, but this practice has been eliminated by castings because it is not safe and efficient. At present, the workpiece is mostly clamped by a cylinder to fix the workpiece on the die. However, this clamping method generally requires an air source to drive the cylinder, which requires high working conditions. In addition, as a processing equipment with huge production volume, the punch press consumes a large amount of air in the cylinder, which is not conducive to energy saving and consumption reduction. Utility Model Content

[0004] The utility model aims to provide a workpiece clamping mechanism for a punch press, so as to solve the problem that the workpiece clamping method on the punch press generally needs to be equipped with an air source to drive the cylinder, which requires high working conditions, and the punch press is a processing equipment with a huge production volume, which leads to a large amount of air consumption in the cylinder, which is not conducive to energy saving and consumption reduction.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A workpiece clamping mechanism for a punching machine comprises a die, which is installed on a punching station of the punching machine. The punching machine is equipped with a workpiece clamping mechanism for the die, and the workpiece clamping mechanism comprises a base, an electric push rod, a guide column, a spring, an extrusion plate and a positioning plate. The base is installed on the punching machine, the electric push rod and the guide column are both installed on the base, the extrusion plate is located on one side of the die and installed on the guide column, the push rod end of the electric push rod is arranged opposite to the extrusion plate, the spring is sleeved on the guide column, and the two ends of the spring respectively tighten the base and the extrusion plate, and the positioning plate is installed on the other side of the die.

[0007] A further technical solution is: a support ring is provided on the base, and the push rod end of the electric push rod passes through the support ring.

[0008] A further technical solution is: a threaded section is provided at one end of the guide column, and a tightening nut is threadedly connected to the threaded section.

[0009] A further technical solution is: a limiting pin for the tightening nut is provided at one end of the guide column.

[0010] A further technical solution is that a warping portion is provided at one end of the extruded plate.

[0011] A further technical solution is that the push rod end of the electric push rod is rotatably connected to the extrusion plate.

[0012] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0013] The utility model provides a workpiece clamping mechanism for a punching machine, which avoids the use of a cylinder and has low requirements on use conditions. An electric push rod drives an extrusion plate to move along a guide column toward a die, and the extrusion plate cooperates with a positioning plate to clamp the workpiece on the die, which is convenient for the punching machine to perform stamping. In addition, a spring can reset the extrusion plate, and the electric push rod is not used for extrusion plate connection, which is convenient for disassembly, assembly and maintenance of the clamping mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a workpiece clamping mechanism for a punching machine.

[0015] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of the workpiece clamping mechanism.

[0016] Figure numerals: 1. die; 2. workpiece clamping mechanism; 3. base; 4. electric push rod; 5. guide column; 6. spring; 7. extrusion plate; 8. positioning plate; 9. support ring; 10. tightening nut; 11. limit pin; 12. warping part. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme 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 described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0019] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0020] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0021] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of 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.

[0023] Embodiment 1:

[0024] In this embodiment, Figure 1 and Figure 2As shown, a workpiece clamping mechanism for a punching machine comprises a die 1, which is installed on the punching station of the punching machine. A workpiece clamping mechanism 2 for the die 1 is installed on the punching machine, and the workpiece clamping mechanism 2 comprises a base 3, an electric push rod 4, a guide column 5, a spring 6, an extrusion plate 7 and a positioning plate 8. The base 3 is installed on the punching machine, the electric push rod 4 and the guide column 5 are both installed on the base 3, the extrusion plate 7 is located on one side of the die 1 and is installed on the guide column 5, the push rod end of the electric push rod 4 is arranged opposite to the extrusion plate 7, the spring 6 is sleeved on the guide column 5, and the two ends of the spring 6 respectively tighten the base 3 and the extrusion plate 7, and the positioning plate 8 is installed on the other side of the die 1.

[0025] Preferably, a support ring 9 is provided on the base 3 , and the push rod end of the electric push rod 4 passes through the support ring 9 .

[0026] The support ring 9 provides stable support for the push rod.

[0027] Preferably, a threaded section is provided at one end of the guide column 5 , and a tightening nut 10 is threadedly connected to the threaded section.

[0028] The tightening nut 10 can prevent the extrusion plate 7 from slipping off the guide pillar 5, and can also change the position of the extrusion plate 7 when the spring 10 is normally in a compressed state.

[0029] Preferably, a limiting pin 11 for tightening the nut 10 is provided at one end of the guide column 5 .

[0030] The limiting pin 11 prevents the adjusting nut 10 on the guide column 5 from being disengaged.

[0031] Preferably, a warping portion 12 is provided at one end of the extruded plate 7 .

[0032] Preferably, the push rod end of the electric push rod 4 is rotatably connected to the extrusion plate 7 .

[0033] The electric push rod 4 can not only clamp the workpiece with the extrusion plate 7, but also reset the extrusion plate 7.

[0034] The working process of the utility model is as follows: the workpiece is sent to the die 1, and then the electric push rod 4 works. The electric push rod 4 presses against the extrusion plate 7 to overcome the pulling force of the spring 6 and moves toward the die along the guide column 5. The extrusion plate 7 cooperates with the positioning plate 8 to clamp the workpiece on the die 1, which is convenient for the punch press to perform stamping. After the stamping is completed, the push rod in the electric push rod 4 rotates in the opposite direction, and the pushing force of the extrusion plate 7 and the pulling force of the spring 6 can reset the extrusion plate 7, which means that the electric push rod 4 is not used for the connection with the extrusion plate 7, which is convenient for the disassembly and maintenance of the clamping mechanism.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A workpiece clamping mechanism for a punching machine, comprising a punching die (1), wherein the punching die (1) is installed at a punching station of the punching machine, and characterized in that: The punching machine is provided with a workpiece clamping mechanism (2) for the punching die (1), the workpiece clamping mechanism (2) comprising a base (3), an electric push rod (4), a guide column (5), a spring (6), an extrusion plate (7) and a positioning plate (8), the base (3) being installed on the punching machine, the electric push rod (4) and the guide column (5) being installed on the base (3), the extrusion plate (7) being located on one side of the punching die (1) and being installed on the guide column (5), the push rod end of the electric push rod (4) being arranged opposite to the extrusion plate (7), the spring (6) being sleeved on the guide column (5), and the two ends of the spring (6) respectively tightening the base (3) and the extrusion plate (7), and the positioning plate (8) being installed on the other side of the punching die (1).

2. The workpiece clamping mechanism for a punch press according to claim 1, characterized in that: A support ring (9) is provided on the base (3), and a push rod end of the electric push rod (4) passes through the support ring (9).

3. The workpiece clamping mechanism for a punch press according to claim 1, characterized in that: One end of the guide column (5) is provided with a threaded section, and a tightening nut (10) is threadedly connected to the threaded section.

4. The workpiece clamping mechanism for a punch press according to claim 3, characterized in that: One end of the guide column (5) is provided with a limit pin (11) for the adjusting nut (10).

5. The workpiece clamping mechanism for a punch press according to claim 1, characterized in that: A warping portion (12) is provided at one end of the extrusion plate (7).

6. The workpiece clamping mechanism for a punch press according to claim 1, characterized in that: The push rod end of the electric push rod (4) is rotatably connected to the extrusion plate (7).

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