Hard pulling type punching tool for plate punching machine

Abstract

The utility model discloses a hard pulling type punching tool for a plate punching machine, which comprises a fixed seat, and a sliding rail is arranged on one side surface of the fixed seat; the punching tool seat is connected to the sliding rail in a sliding mode, an air cylinder with a telescopic shaft is fixed to the upper portion of the punching tool seat, a through hole is formed in the top of the punching tool seat, the telescopic shaft penetrates through the through hole, a connecting boss is arranged at the bottom end of the telescopic shaft, a positioning block is fixed to the bottom of the punching tool seat, a feeding groove is formed in the side face of the positioning block, and a positioning hole is formed in the top face of the positioning block; the punching tool is slidably connected into the positioning hole, a connecting base is arranged at the top of the punching tool, two connecting plates are arranged on the connecting base at intervals, and connecting grooves are formed in the inner side faces of the connecting plates. According to the device, the connecting boss enters the connecting groove through the interval between the connecting plates, connection between the punching tool and the air cylinder is achieved through cooperation of the connecting boss and the connecting groove, the air cylinder can directly control the punching tool to move up and down, when the punching tool is clamped in a punched hole of a plate, the punching tool can be directly pulled out through the air cylinder, and the situation that follow-up machining is affected due to material clamping is prevented.

Description

Technical Field

[0001] The utility model relates to the field of plate punching equipment, in particular to a hard-drawing punch for a plate punching machine. Background Art

[0002] Punching is required in sheet metal for screw insertion. To prevent the impact of burrs on sheet metal processing, punching equipment with a floating punch holder is currently available. The punch holder can move up and down during processing to prevent direct contact between the burr and the punch holder. However, the punch in this punching equipment is reset solely by a spring. If the friction between the burr and the punch is too great, the punch can become stuck in the sheet metal, affecting subsequent processing. Utility Model Content

[0003] In order to solve the above problems, the utility model proposes a hard-drawing punch for a plate punching machine.

[0004] The technical solution adopted by the utility model is: a hard-drawing punch for a plate punching machine, comprising a fixed seat, a slide rail being provided on one side surface of the fixed seat;

[0005] A punch seat is slidably connected to the slide rail, a cylinder with a telescopic shaft is fixed above the punch seat, a through hole is provided on the top of the punch seat, the telescopic shaft passes through the through hole, a connecting boss is provided at the bottom end of the telescopic shaft, a positioning block is fixed to the bottom of the punch seat, a feed groove is provided on the side of the positioning block, and a positioning hole is provided on the top surface of the positioning block;

[0006] A punch is slidably connected to the positioning hole, and a connecting seat is provided on the top of the punch. Two connecting plates are spaced apart on the connecting seat. A connecting groove is provided on the inner side surface of the connecting plate, and the connecting boss is clamped in the connecting groove.

[0007] Furthermore, the punching tool includes a punching knife and a guide sleeve, a guide hole is provided in the guide sleeve, the punching knife is slidably connected in the guide hole, the guide sleeve is slidably connected in the positioning hole, a limiting edge is provided on the top of the guide sleeve, the connecting seat is fixed to the top of the punching knife, a first reset spring is provided between the punching knife and the limiting edge, and a second reset spring is provided between the limiting edge and the positioning block.

[0008] Furthermore, the top end of the punching knife is provided with an external thread, the connecting seat is provided with a connecting hole, the connecting hole is provided with an internal thread, and the punching knife is fixed to the connecting seat by threaded connection.

[0009] Furthermore, a limit plate is provided above the fixing seat, the limit plate is provided with a plurality of limit holes, the punch seat is located below the limit plate, a plurality of positioning rods are provided on the punch seat, the positioning rods pass through the limit holes, and positioning nuts are provided on the positioning rods, and the positioning nuts are located above the limit plate.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] In the utility model, a connecting boss is provided at the end of the telescopic shaft of the cylinder, a connecting seat is provided on the top of the punch, two connecting plates are provided on the connecting seat at intervals, and connecting grooves are provided on the inner sides of the connecting plates. The connecting boss enters the connecting groove through the interval between the connecting plates. The connection between the punch and the cylinder is achieved by the cooperation of the connecting boss and the connecting groove, so that the cylinder can directly control the up and down movement of the punch. When the punch is stuck in the punching hole of the plate, the punch can be directly pulled out by the cylinder to prevent the material from getting stuck and affecting subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

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

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

[0015] Figure 3 This is a schematic structural diagram of the entire machine in the assembled state of the present invention;

[0016] The utility model number information is as follows:

[0017] 1. Fixed seat; 11. Slide rail; 12. Limit plate; 121. Limit hole; 2. Punch seat; 21. Cylinder; 22. Connecting boss; 23. Positioning block; 231. Feed trough; 232. Positioning hole; 3. Punch; 31. Connecting seat; 311. Connecting hole; 32. Connecting plate; 321. Connecting slot; 33. Punch; 331. External thread; 34. Guide sleeve; 341. Guide hole; 342. Limiting edge; 35. First return spring; 36. Second return spring

[0018] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0020] The utility model proposes a hard-drawing punch 3 for a plate punching machine, such as Figure 1 、 2 As shown, it includes a fixed seat 1, a slide rail 11 is provided on one side of the fixed seat 1, the fixed seat 1 is connected to the crossbeam of the punching machine, and its position in the longitudinal direction remains relatively fixed; a punching tool 3 seat 2 is slidably connected to the slide rail 11, a cylinder 21 with a telescopic shaft is fixed above the punching tool 3 seat 2, a through hole is provided on the top of the punching tool 3 seat 2, the telescopic shaft passes through the through hole, and a connecting boss 22 is provided at the bottom of the telescopic shaft, a positioning block 23 is fixed to the bottom of the punching tool 3 seat 2, a feed groove 231 is provided on the side of the positioning block 23, and a positioning block 23 is provided on the top surface Hole 232; a punch 3 that is slidably connected to the positioning hole 232, a connecting seat 31 is provided on the top of the punch 3, two connecting plates 32 are provided on the connecting seat 31, and a connecting groove 321 is provided on the inner side surface of the connecting plate 32, and the connecting boss 22 enters the connecting groove 321 from the gap between the two connecting plates 32. Through the clamping connection between the connecting boss 22 and the connecting groove 321, the telescopic shaft can drive the punch 3 to move up and down, and the punch 3 is forcibly separated from the burr by the force of the cylinder 21, so as to avoid the punch 3 being stuck in the punching hole of the plate, thereby ensuring the stable progress of subsequent processing.

[0021] like Figure 2 As shown, the punch 3 includes a punching knife 33 and a guide sleeve 34. A guide hole 341 is provided in the guide sleeve 34. The punching knife 33 is slidably connected in the guide hole 341. The guide sleeve 34 is slidably connected in the positioning hole 232. A limiting edge 342 is provided on the top of the guide sleeve 34. The connecting seat 31 is fixed to the top of the punching knife 33. A first reset spring 35 is provided between the punching knife 33 and the limiting edge 342. A second reset spring 36 is provided between the limiting edge 342 and the positioning block 23. The first and second reset springs 36 generate a restoring force to separate the punching knife 33 from the burrs of the punching hole, thereby reducing the output torque required by the cylinder 21 and ensuring the stability of the retraction of the punch 3.

[0022] Specifically, the top of the punching knife 33 is provided with an external thread 331, the connecting seat 31 is provided with a connecting hole 311, and the connecting hole 311 is provided with an internal thread. The top of the punching knife 33 extends into the connecting hole 311, and the punching knife 33 is threadedly fixed to the connecting seat 31 through the cooperation of the internal and external threads 331.

[0023] like Figure 3 As shown, a limit plate 12 is provided above the fixed seat 1, and the limit plate 12 cooperates with the crossbeam of the whole machine to hang the punch 3 on the crossbeam. The limit plate 12 is provided with a plurality of limit holes 121, and the punch 3 seat 2 is located below the limit plate 12. A plurality of positioning rods are provided on the punch 3 seat 2, and the positioning rods pass through the limit holes 121. Positioning nuts are provided on the positioning rods, and the positioning nuts are located above the limit plate 12. The limit plate 12 is used to limit the upward movement distance of the punch 3 seat 2 before punching, and the positioning nut is used to limit the falling distance of the punch 3 seat 2 after punching.

[0024] The above description is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention fall within the protection scope of the present invention.

Claims

1. A hard-drawing punch for a plate punching machine, characterized in that: include A fixed seat, wherein a slide rail is provided on one side surface of the fixed seat; A punch seat is slidably connected to the slide rail, a cylinder with a telescopic shaft is fixed above the punch seat, a through hole is provided on the top of the punch seat, the telescopic shaft passes through the through hole, a connecting boss is provided at the bottom end of the telescopic shaft, a positioning block is fixed to the bottom of the punch seat, a feed groove is provided on the side of the positioning block, and a positioning hole is provided on the top surface of the positioning block; A punch is slidably connected to the positioning hole, and a connecting seat is provided on the top of the punch. Two connecting plates are spaced apart on the connecting seat. A connecting groove is provided on the inner side surface of the connecting plate, and the connecting boss is clamped in the connecting groove.

2. A hard-drawing punch for a plate punching machine according to claim 1, characterized in that: The punching tool includes a punching knife and a guide sleeve. A guide hole is provided in the guide sleeve. The punching knife is slidably connected to the guide hole. The guide sleeve is slidably connected to the positioning hole. A limiting edge is provided on the top of the guide sleeve. The connecting seat is fixed to the top of the punching knife. A first return spring is provided between the punching knife and the limiting edge. A second return spring is provided between the limiting edge and the positioning block.

3. The hard-drawing punch for a plate punching machine according to claim 2, characterized in that: The top end of the punching knife is provided with an external thread, the connecting seat is provided with a connecting hole, the connecting hole is provided with an internal thread, and the punching knife is fixedly connected to the connecting seat with threads.

4. The hard-drawing punch for a plate punching machine according to claim 1, characterized in that: A limit plate is provided above the fixing seat, and the limit plate is provided with a plurality of limit holes. The punch seat is located below the limit plate. A plurality of positioning rods are provided on the punch seat, and the positioning rods pass through the limit holes. Positioning nuts are provided on the positioning rods, and the positioning nuts are located above the limit plate.

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