Sheet metal multi-aperture punching machine

Abstract

The application discloses a sheet metal multi-aperture punching machine tool, which comprises a workbench, a positioning and clamping assembly controlled by a transverse and longitudinal electric sliding screw pair and a multi-mode punching assembly. The multi-mode punching assembly comprises a punch fixed plate, a punch seat, an array punch, a variable punch, a die and a die seat. The array punch is uniformly provided with punch pins opposite the blanking holes of the die for punching operation. The variable punch comprises a punching sleeve, a multi-stage punch shaft for pressing each circle of the punching sleeve, a punch plate and a punch hydraulic cylinder. The sheet metal multi-aperture punching machine tool selectively implements array punching or punching requirements of special positions and different aperture sizes on the sheet metal through the array punch and the variable punch of the multi-mode punching assembly. The sheet metal multi-aperture punching machine tool can punch array holes with uniform specifications on a large area of the sheet metal and can also perform special punching operation with different apertures on a local part, thereby improving the efficiency and reducing the equipment cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining equipment, in particular to a multi-pore-diameter punching machine for sheet metal. BACKGROUND

[0002] At present, there are many punching machine devices in China, and the most direct punching scheme for sheet metal is punching. The common punching method is array punching, which mainly shows a regular and unified punching mode. However, for irregular and non-uniform array punching, the entire sheet metal needs to be punched directly, and the mold equipment is relatively large, which obviously increases the cost of the punching mold equipment. If a separate punching mold is used to implement single punching, and the array hole repetition time is relatively long, the efficiency is extremely low. Therefore, it is necessary to design a universal punching machine that can punch array holes on a large area and also implement different hole diameter special punching operations for local parts. In this way, the cost of large-area punching mold equipment can be saved, and punching can be implemented for different positions and different hole diameters. The efficiency is high, and the cost is low. SUMMARY

[0003] The purpose of the present application is to punch array holes with regular and unified specifications on a large area of sheet metal, and also to implement different hole diameter special punching operations for local parts, improve efficiency, and reduce equipment cost. We design a multi-pore-diameter punching machine for sheet metal.

[0004] To solve the above problems, the technical scheme adopted is:

[0005] A multi-pore-diameter punching machine for sheet metal, comprising a workbench, a positioning and clamping assembly controlled by a horizontal and vertical electric sliding screw pair, and a multi-mode punching assembly,

[0006] The rear side of the workbench is provided with a punching frame, and the upper end of the punching frame is provided with a hydraulic cylinder. The multi-mode punching assembly is used to implement array punching or multi-pore-diameter punching on the sheet metal,

[0007] The horizontal and vertical electric sliding screw pairs are horizontally fixed on the workbench surface and comprise horizontally and vertically arranged motors, couplings and screw pairs. The screw pairs are symmetrically and parallelly provided with slide block slide rail assemblies on both sides, and the slide blocks are fixed to the lower part of the positioning and clamping assembly,

[0008] The multi-mode punching assembly comprises a die fixing plate fixed at the lower part of the hydraulic cylinder, a die seat fixed through a sliding groove, an array die, a variable die, a concave die and a concave die seat, the array die is uniformly provided with punch pins at intervals, the punch pins implement punching operation opposite to the blanking hole of the concave die, the variable die comprises a punching sleeve which is sleeved from inside to outside, a multi-stage punch shaft which implements pressing opposite to each circle of the punching sleeve, and a punching plate and a punching hydraulic cylinder, the punching plate is fixed at the upper part of each stage of the punch shaft and drives each stage of the punch shaft to rise and fall, and only one circle of the punching sleeve is opposite to the lower sheet metal plate to implement punching operation of corresponding hole diameter.

[0009] Further, the die seat and the die fixing plate are slid up and down through the cooperation of the guide columns and guide sleeves arranged at four corners, and the reset spring is arranged between the guide columns and guide sleeves, and the die is reset after punching with the concave die.

[0010] Further, the positioning and clamping assembly comprises a sliding plate, a mechanical clamping jaw controlled by a telescopic air cylinder and a positioning block, the mechanical clamping jaw is fixed at the front end of the sliding plate, and the mechanical clamping jaw is provided with a gasket to further clamp and position the upper and lower surfaces of the sheet metal plate.

[0011] Further, the lower end of the punching sleeve is provided with a bevel chamfer at the outer periphery, and a shaped punching edge is formed, which is used for one-time punching and cutting of the sheet metal plate.

[0012] Further, the excess material recycling groove is arranged directly below the concave die seat, and the lower part is provided with an inclined excess material sliding groove.

[0013] The beneficial effects of the present application are:

[0014] The sheet metal multi-aperture punching machine tool can selectively implement array punching or punching requirements of special positions and different hole diameters on the sheet metal through the array die and the variable die of the multi-mode punching assembly, can punch array holes of the same specification on a large area of the sheet metal, and can also implement special punching operation of different hole diameters on a local part, thereby improving the efficiency and reducing the equipment cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a front view of the sheet metal multi-aperture punching machine tool of the present embodiment;

[0016] Figure 2 It is a top view of the sheet metal multi-aperture punching machine tool of the present embodiment;

[0017] Figure 3 It is Figure 1 It is a local enlarged view of A in FIG. 4;

[0018] Figure 4 It is a structural schematic view of the variable die of the present embodiment;

[0019] Figure 5 The top view of the variable die described in this embodiment;

[0020] Figure 6 The section view of the outermost circle die cutting sleeve punching of the variable die described in this embodiment;

[0021] Figure 7 The section view of the middle circle die cutting sleeve punching of the variable die described in this embodiment;

[0022] Figure 8 The section view of the innermost circle die cutting sleeve punching of the variable die described in this embodiment;

[0023] Wherein, 1 - workbench, 2 - longitudinal electric sliding screw pair, 3 - mechanical clamping jaw, 4 - multi-mode punching assembly, 5 - hydraulic cylinder, 6 - stamping frame, 7 - excess material recycling groove, 8 - sheet metal plate, 9 - positioning and clamping assembly, 10 - transverse electric sliding screw pair, 11 - punch needle, 12 - die fixing plate, 13 - outermost circle punching shaft, 14 - outermost circle die cutting sleeve, 15 - die seat, 16 - innermost circle punching shaft, 17 - stamping plate, 18 - innermost circle stamping hydraulic cylinder, 19 - innermost circle punching shaft, 20 - die cutting edge. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be clearly and completely described in the following with reference to the drawings in the embodiments of the application.

[0025] Please refer to Figures 1-8 , the embodiment proposes a sheet metal multi-aperture punching machine tool, which comprises a workbench 1, a positioning and clamping assembly 9 controlled by transverse and longitudinal electric sliding screw pairs 2, and a multi-mode punching assembly 4. The rear side of the workbench 1 is provided with a stamping frame 6, and the upper end of the stamping frame 6 is provided with a hydraulic cylinder 5, which cooperates with the multi-mode punching assembly 4 to implement array punching or multi-aperture punching on the sheet metal.

[0026] Please refer to Figure 2 , the transverse electric sliding screw pair 10 and the longitudinal electric sliding screw pair 2 are horizontally fixed on the surface of the workbench 1 and comprise transversely and longitudinally arranged motors, couplings and screw pairs, and symmetrical and parallel slide block slide rail assemblies are further arranged on the two sides of the screw pairs, and the slide blocks are fixed to the lower part of the positioning and clamping assembly 9.

[0027] Please refer to Figure 3 and Figure 4The multi-mode punching assembly 4 comprises a die fixing plate 12 fixed at the lower part of the hydraulic cylinder 5, a die seat 15 fixed by a sliding groove, an array die, a variable die, a concave die and a concave die seat. The array die is uniformly provided with punch pins 11. The punch pins 11 implement array punching operation on the blanking holes of the concave die. After the punch pins pass through the die seat, they accurately pass through the blanking holes. The variable die comprises punch cutting sleeves which are sleeved from inside to outside in multiple layers, and multi-stage punch shafts which press each circle of punch cutting sleeves. The punch cutting sleeves comprise outermost circle punch cutting sleeves, intermediate circle punch cutting sleeves and innermost circle punch cutting sleeves. The outermost circle punch shafts, the intermediate circle punch shafts and the innermost circle punch shafts are respectively driven by the punch cutting sleeves, and a punch plate 17 and a punch hydraulic cylinder 5. The punch plate 17 is fixed at the upper part of each stage of punch shafts and drives each stage of punch shafts to rise and fall by the punch hydraulic cylinder 5. Only one circle of punch cutting sleeves is kept to implement punch cutting operation on the lower sheet metal plate with corresponding hole diameters.

[0028] Referring to Figure 1 The die seat 15 and the die fixing plate 12 slide up and down by cooperating with the guide column guide sleeve arranged at four corners, and reset springs are arranged between the guide column guide sleeves to reset the die after punching by the die and the concave die.

[0029] Referring to Figure 2 The positioning and clamping assembly 9 comprises a sliding plate, mechanical clamping jaws 3 controlled by a telescopic air cylinder and positioning blocks. The mechanical clamping jaws 3 are fixed at the front end of the sliding plate. The mechanical clamping jaws 3 are provided with gaskets to further clamp and position the upper and lower surfaces of the sheet metal plate.

[0030] Referring to Figure 6 The punch cutting sleeve is provided with a bevel chamfer at the outer periphery of the lower end to form a cutting edge 20 for cutting and cutting the sheet metal plate at one time.

[0031] Referring to Figure 1 The excess material recycling groove 7 is arranged directly below the concave die seat, and the lower part is provided with an inclined excess material sliding groove.

[0032] The embodiments of the application are described in detail above with reference to the drawings, but the application is not limited to the above-described embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes, modifications, replacements and variations can be made without departing from the purpose of the application. The scope of the application is defined by the appended claims and their equivalents.

Claims

1. A sheet metal multi-aperture punching machine tool, comprising a workbench, a positioning and clamping assembly controlled by a transverse and longitudinal electric sliding screw pair, and a multi-mode punching assembly, characterized in that: a punching frame is arranged on the rear side of the workbench, a hydraulic cylinder is arranged at the upper end of the punching frame, and the multi-mode punching assembly is used to perform array punching or multi-aperture punching on the sheet metal, the transverse and longitudinal electric sliding screw pair is horizontally fixed on the workbench surface and comprises a transverse and longitudinal motor, a shaft coupling, and a screw pair, symmetrically parallel slide block slide rail assemblies are arranged on both sides of the screw pair, and the slide blocks are fixed to the lower part of the positioning and clamping assembly, the multi-mode punching assembly comprises a die fixing plate fixed to the lower part of the hydraulic cylinder, a die seat, an array die, a variable die, a concave die, and a concave die seat, the die seat and the die fixing plate are connected through four guide columns and guide sleeves arranged at four corners and are capable of sliding up and down, the array die is uniformly provided with punch pins at intervals, the punch pins are opposite to the blanking holes of the concave die and perform punching operation, the variable die comprises a cutting sleeve, a multi-stage punch shaft opposite to each cutting sleeve for pressing, a punch plate, and a punch hydraulic cylinder, the punch plate is fixed to the upper part of each punch shaft and is driven by the punch hydraulic cylinder to move up and down, and only one cutting sleeve is opposite to the sheet metal below and performs corresponding aperture cutting operation, a bevel chamfer is arranged on the outer periphery of the lower end of the cutting sleeve, and a shaped cutting edge is formed. a reset spring is arranged between the guide columns and the guide sleeves, and the punch is reset after punching by the punch and the concave die.

2. The sheet metal multi-punching machine of claim 1, wherein: the positioning and clamping assembly comprises a sliding plate and a mechanical clamp jaw controlled by a telescopic cylinder, the mechanical clamp jaw is fixed to the front end of the sliding plate, and the mechanical clamp jaw is provided with a gasket.

3. The sheet metal multi-punching machine of claim 1, wherein: a scrap recovery groove is arranged directly below the concave die seat, and an inclined scrap chute is arranged at the lower part of the scrap recovery groove.

4. The sheet metal multi-punching machine of claim 1, wherein: ​

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