Sheet metal punching device and method with thickness detection function

Abstract

The application discloses a sheet metal punching device and method with thickness detection function, and belongs to the technical field of sheet metal punching, which comprises a machine body, a detection groove is arranged on the top of the machine body, a detection device is arranged in the detection groove, supports are symmetrically arranged on the two sides of the detection groove, a punching device is arranged between the sides of the supports away from the detection groove, and the detection device is a detection air bag arranged in the detection groove. The punching device comprises a supporting block arranged between the supports. When the cleaning plate rotates, the cleaning teeth are driven to rotate, thereby cleaning burrs generated on the bottom of the workpiece due to punching, and the gas in the air jet pipe flows through the channel between the adjacent two cleaning teeth, thereby blowing away the burr debris cleaned by the cleaning plate, and the cleanliness of the surface of the workpiece is improved, thereby improving the quality of workpiece punching.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sheet metal punching, in particular to a sheet metal punching device with thickness detection function and method. BACKGROUND

[0002] Sheet metal parts are products processed by sheet metal technology. Sheet metal parts have the characteristics of light weight, high strength, low cost, etc. and are widely used in our life, such as electronic appliances, communication, automobile industry, medical equipment, etc. Sheet metal processing is a key technology that sheet metal technicians need to master and is also an important process of sheet metal product forming. Sheet metal processing, also known as metal plate processing, mainly includes stamping, bending, forming, welding, polishing, spraying, printing, assembly, etc.

[0003] The existing sheet metal punching device adopts a unified punching force when punching sheet metal workpieces of different thicknesses, which causes great damage to the punching device and shortens the service life of the punching device. SUMMARY

[0004] The present application aims to provide a sheet metal punching device with thickness detection function and method to solve the problems in the background art.

[0005] To solve the above technical problems, the present application provides the following technical scheme:

[0006] A sheet metal punching device with thickness detection function, comprising: a machine body, a detection groove is provided on the top of the machine body, a detection device is provided in the detection groove, supports are symmetrically provided on both sides of the detection groove, a punching device is provided between the supports away from the detection groove, the detection device comprises: a detection air bag, the detection air bag is provided in the detection groove, the punching device comprises: a support block, the support block is provided between the supports.

[0007] Preferably, a plurality of support columns are provided in the detection air bag, support springs are provided in the support columns, the support columns are made of rubber, a punching pipe is provided in the middle of the detection air bag, a sliding pipe is provided on the side of the punching pipe away from the detection groove, a sliding groove is provided on the side of the punching pipe close to the sliding pipe, the sliding pipe and the sliding groove are slidingly connected, springs are provided in the sliding groove, a waste cavity is provided on the side of the punching pipe away from the sliding pipe, and the punching pipe is connected to the waste cavity.

[0008] Preferably, the bottom of the detection air bag is symmetrically provided with an air outlet pipe and an air inlet pipe, the air outlet pipe is provided with a temporary storage cavity away from one side of the detection air bag, a one-way valve is arranged in the air outlet pipe, a flow meter is further arranged in the air outlet pipe, an air ring is arranged in the supporting block, the air outlet pipe is communicated with the air ring, and a booster pump is arranged in the air ring.

[0009] Preferably, the surface of the machine body is provided with a moving groove, a contraction cavity is arranged in the side wall of the moving groove, a stop block is arranged in the contraction cavity, the stop block is in sliding connection with the contraction cavity, and a first electromagnetic spring is arranged between the stop block and the contraction cavity.

[0010] Preferably, the opposite side of the support is provided with a plurality of racks, the plurality of racks are equidistantly arranged along the side edge of the support, the top of the moving groove is provided with a pressing plate, the side of the pressing plate close to the support is provided with a rotating gear, the rotating gear is in meshing transmission with the rack, and a clamping groove is arranged on the side of the pressing plate close to the contraction cavity.

[0011] Preferably, a hydraulic cylinder is arranged in the supporting block, a rotating block is arranged on the push rod of the hydraulic cylinder, a driving motor is arranged in the rotating block, a punching column is arranged on the driving shaft of the driving motor, an expansion ring is arranged on the side wall of the punching column, the expansion ring is in sliding connection with the punching column, and an electromagnet is arranged in the expansion ring.

[0012] Preferably, a punching hole is arranged in the middle of the pressing plate, a clamping ring is arranged on the surface of the pressing plate, the punching column is arranged above the punching hole, and the bottom of the punching column is in the same plane as the lower surface of the pressing plate.

[0013] Preferably, a jet pipe is arranged in the punching column, the jet pipe is communicated with the air ring, a cleaning groove is arranged in the punching column, a cleaning plate is arranged in the cleaning groove, the cleaning plate is in sliding connection with the cleaning groove, a second electromagnetic spring is arranged on the side of the cleaning plate close to the punching column, and cleaning teeth are arranged on the top of the cleaning plate.

[0014] A punching method of a sheet metal punching device with thickness detection function,

[0015] The punching method comprises the following specific steps:

[0016] S1, placing a workpiece in a detection groove;

[0017] S2, extruding the workpiece under the driving of the pressing plate and the punching column;

[0018] S3, detecting the gas output to the air outlet pipe after the detection air bag is extruded and detecting the gas flow in the air outlet pipe;

[0019] S4, the controller obtains the gas capacity according to the gas flow, and then obtains the thickness of the detection air bag under extrusion, that is, the working thickness;

[0020] S5, the punching column punches the workpiece and cleans it;

[0021] S6, the workpiece is taken out.

[0022] When the workpiece to be punched is not placed on the machine body, the extrusion plate is located above the moving groove at this time, and the upper surface of the detection air bag is in the same plane as the surface of the moving groove. Then the worker places the workpiece to be punched on the upper surface of the detection air bag. Then the controller controls the hydraulic cylinder in the support block to start. At this time, the electromagnet in the expansion ring is in the energized state, so when the push rod of the hydraulic cylinder pushes the rotating block to move, the rotating block pushes the punching column to move, and the punching column moves towards the side close to the detection groove. When the punching column moves, the expansion ring is attracted to the outer wall of the punching column under the action of the electromagnet, so that the punching column drives the expansion ring to move. When the expansion ring moves, it encounters the snap ring, and then the expansion ring extends into the snap ring. The controller controls the driving motor to start. After the driving shaft of the driving motor rotates, it drives the punching column to rotate, and the expansion ring rotates. The expansion ring then rotates to the stop groove of the snap ring and stops. Then the driving motor stops.

[0023] The punching column continues to move towards the side close to the detection groove, and the expansion ring moves when the punching column moves. The expansion ring exerts pressure on the extrusion plate, so that the extrusion plate moves along the axis of the support. When the extrusion plate moves, the rotating gear on the extrusion plate engages with the rack on the support to transmit power. When the lower surface of the extrusion plate contacts the upper surface of the workpiece to be punched, the extrusion plate continues to move towards the side close to the detection groove, so that the extrusion plate extrudes the workpiece to be punched downward, and the workpiece to be punched extrudes the detection air bag downward, so that the detection air bag extrudes the support column and the sliding tube, so that the support spring in the support column contracts, and the sliding tube moves to the sliding groove in the punching tube, so that the sliding tube contracts into the sliding groove in the punching tube. At the same time, the pressure inside the detection air bag increases after being extruded, and then the gas in the detection air bag moves to the outlet tube and is transported from the outlet tube to the temporary storage cavity;

[0024] At the same time, the extrusion plate encounters the moving groove during movement, and then the extrusion plate extends into the moving groove. When the upper surface of the extrusion plate is in the same plane as the upper surface of the machine body, the controller controls the first electromagnetic spring to be de-energized. Then the stop block is pushed out of the contraction cavity by the first electromagnetic spring. The stop block then moves towards the side close to the clamping groove and finally extends into the clamping groove to fix, so that the workpiece to be punched is completely inserted into the detection groove.

[0025] When the extrusion plate is extruding the workpiece to be punched, the gas in the detection gas bag continuously flows out of the gas outlet pipe. During the gas flow in the gas outlet pipe, the controller controls the flow meter in the gas outlet pipe to start. The flow meter monitors the output gas flow and converts the flow signal into an electrical signal to the controller. The controller compares the flow size to obtain the gas capacity output by the detection gas bag during the extrusion process. Since the detection gas bag is arranged in the detection groove, the area occupied by the detection gas bag is a constant area. The capacity of the gas flow is obtained by detecting the gas flow. The controller obtains the height of the detection gas bag by dividing the capacity by the constant area of the detection gas bag, that is, the thickness of the workpiece to be punched. The thickness of the workpiece to be punched is detected, and the controller adjusts the punching force according to the thickness of the workpiece to be punched, thereby prolonging the service life of the punching column, prolonging the equipment maintenance cycle, and reducing the equipment use cost.

[0026] When the extrusion plate is blocked by the stopper, the controller controls the electromagnet in the expansion ring to be de-energized, and then controls the push rod of the hydraulic cylinder to reset. The push rod then drives the rotating block to rotate. The rotating block moves to drive the punching column to move, so that the punching column moves away from the detection groove. At this time, the expansion ring and the extrusion plate are in a static state. When the punching column moves to the punching height (the controller adjusts the punching height according to the thickness of the workpiece to be punched), the controller controls the push rod of the hydraulic cylinder to move to the side close to the detection groove, so that the punching column passes through the punching port to punch the workpiece. The waste produced by punching is sequentially through the sliding pipe and the punching pipe, and finally falls into the waste cavity for storage.

[0027] When the punching column completes the punching of the workpiece, the upper surface of the cleaning groove and the lower surface of the workpiece are in the same plane. Then the controller controls the second electromagnetic spring to be de-energized, and then the second electromagnetic spring drives the cleaning plate to move into the cleaning groove. At the same time, the controller controls the booster pump in the gas ring in the support block to start. The booster pump extracts the gas in the temporary storage cavity, and then the gas is transported to the gas ring through the gas outlet pipe, and then transported to the air jet pipe through the gas ring. At the same time, the controller controls the driving motor to start. The driving shaft of the driving motor drives the punching column to rotate. The punching column rotates to drive the cleaning plate to rotate. Since the top of the cleaning plate is provided with cleaning teeth, the cleaning plate rotates to drive the cleaning teeth to rotate, thereby cleaning the burrs on the bottom of the workpiece caused by punching. The gas in the air jet pipe flows between the adjacent two cleaning teeth to blow away the burr debris cleaned by the cleaning plate, thereby improving the cleanliness of the workpiece surface and improving the quality of the workpiece punching.

[0028] When the punching is completed, the controller controls the energization of the first electromagnetic spring and the second electromagnetic spring, then the first electromagnetic spring drives the stopper to leave the clamping groove and shrink into the shrinkage cavity, the second electromagnetic spring drives the cleaning plate to shrink into the cleaning groove, then the controller controls the push rod of the hydraulic cylinder to reset, the push rod of the hydraulic cylinder drives the rotating block to rise, when the rotating block rises, the punching column rises, when the bottom of the punching column is in the same plane as the lower surface of the extrusion plate, the controller controls the energization of the electromagnet in the expansion ring, the expansion ring is immediately adsorbed with the punching column, then when the punching column rises, the punching column drives the expansion ring to rise, when the expansion ring rises, the extrusion plate rises, at this time, the bottom of the punching column is always in the punching hole, thereby the punching hole protects the bottom of the punching column, thereby prolonging the maintenance cycle of the punching column, at the same time, after the extrusion plate leaves the surface of the workpiece, the detection air bag loses the extrusion force, then the outside air enters the detection air bag through the air inlet pipe, then the detection air bag drives the workpiece to reset, finally the worker takes out the workpiece from the detection groove.

[0029] Compared with the prior art, the beneficial effects achieved by the present application are:

[0030] 1. The workpiece is extruded by the extrusion plate, so that the workpiece extrudes the detection air bag, so that the detection air bag outputs gas to the air outlet pipe after being extruded, so that the flow meter in the air outlet pipe detects the gas flow, so that the volume of the output gas is obtained, so that the thickness of the detection air bag under extrusion (i.e. the thickness of the workpiece) is obtained, so that the punching force of the punching column is adjusted, thereby improving the quality of workpiece punching, prolonging the service life of the punching column, prolonging the maintenance cycle of the equipment, at the same time, the output gas is transported to the air jet pipe through the air outlet pipe, finally the cleaned burrs are blown off, improving the cleanliness of the workpiece surface, further improving the quality of workpiece punching. BRIEF DESCRIPTION OF DRAWINGS

[0031] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0032] Figure 1 is a perspective view of the present application;

[0033] Figure 2 is a schematic view of the internal structure of the present application when it is not punched;

[0034] Figure 3 is a front view of the internal structure of the present application when it is not punched;

[0035] Figure 4 is a schematic view of the internal structure of the present application after punching;

[0036] Figure 5It is the internal front view of the invention after punching;

[0037] Figure 6 It is the structural diagram of the punching column;

[0038] In the figure: 1, body; 11, detection groove; 12, support;

[0039] 2, detection device; 21, detection air bag; 22, support column; 23, punching pipe; 24, sliding pipe; 25, waste cavity; 26, air outlet pipe; 27, temporary storage cavity;

[0040] 3, punching device; 31, support block; 32, moving groove; 33, contraction cavity; 331, stop block; 34, extrusion plate; 341, clamping groove; 342, punching port; 343, clamping ring; 35, rotating block; 36, punching column; 361, expansion ring; 37, air jet pipe; 38, cleaning groove; 39, cleaning plate; 391, cleaning teeth. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the present application.

[0042] Please refer to Figures 1-6 The present application provides technical solutions:

[0043] A sheet metal punching device with thickness detection function, comprising: a body 1, the top of the body 1 is provided with a detection groove 11, the detection groove 11 is provided with a detection device 2, the two sides of the detection groove 11 are symmetrically provided with supports 12, the sides of the supports 12 away from the detection groove 11 are provided with a punching device 3, the detection device 2: a detection air bag 21, the detection air bag 21 is arranged in the detection groove 11, the punching device 3 comprises: a support block 31, the support block 31 is arranged between the supports 12.

[0044] As a specific embodiment of the present application, a plurality of support columns 22 are arranged in the detection air bag 21, support springs are arranged in the support columns 22, the support columns 22 are made of rubber, a punching pipe 23 is arranged in the middle of the detection air bag 21, a sliding pipe 24 is arranged on the side of the punching pipe 23 away from the detection groove 11, a sliding groove is arranged on the side of the punching pipe 23 close to the sliding pipe 24, the sliding pipe 24 and the sliding groove are slidingly connected, springs are arranged in the sliding groove, a waste cavity 25 is arranged on the side of the punching pipe 23 away from the sliding pipe 24, and the punching pipe 23 communicates with the waste cavity 25.

[0045] As a specific embodiment of the present application, the bottom of the detection air bag 21 is symmetrically provided with an air outlet pipe 26 and an air inlet pipe, the air outlet pipe 26 is provided with a temporary storage cavity 27 away from one side of the detection air bag 21, a one-way valve is arranged in the air outlet pipe 26, a flow meter is also arranged in the air outlet pipe 26, a gas ring is arranged in the support block 31, the air outlet pipe 26 is communicated with the gas ring, and a booster pump is arranged in the gas ring.

[0046] As a specific embodiment of the present application, the surface of the body 1 is provided with a moving groove 32, a contraction cavity 33 is arranged in the side wall of the moving groove 32, a stop block 331 is arranged in the contraction cavity 33, the stop block 331 is in sliding connection with the contraction cavity 33, and a first electromagnetic spring is arranged between the stop block 331 and the contraction cavity 33.

[0047] As a specific embodiment of the present application, the opposite side of the support 12 is provided with a plurality of racks, the plurality of racks are equidistantly arranged along the side edge of the support 12, the top of the moving groove 32 is provided with an extrusion plate 34, the side of the extrusion plate 34 close to the support 12 is provided with a rotating gear, the rotating gear is in meshing transmission with the rack, and a clamping groove 341 is arranged on the side of the extrusion plate 34 close to the contraction cavity 33.

[0048] As a specific embodiment of the present application, a hydraulic cylinder is arranged in the support block 31, a rotating block 35 is arranged on the push rod of the hydraulic cylinder, a drive motor is arranged in the rotating block 35, a punching column 36 is arranged on the drive shaft of the drive motor, an expansion ring 361 is arranged on the side wall of the punching column 36, the expansion ring 361 is in sliding connection with the punching column 36, and an electromagnet is arranged in the expansion ring 361.

[0049] As a specific embodiment of the present application, a punching hole 342 is arranged in the middle of the extrusion plate 34, a clasp 343 is arranged on the surface of the extrusion plate 34, the punching column 36 is arranged above the punching hole 342, and the bottom of the punching column 36 is in the same plane as the lower surface of the extrusion plate 34.

[0050] As a specific embodiment of the present application, a jet pipe 37 is arranged in the punching column 36, the jet pipe 37 is communicated with the gas ring, a cleaning groove 38 is arranged in the punching column 36, a cleaning plate 39 is arranged in the cleaning groove 38, the cleaning plate 39 is in sliding connection with the cleaning groove 38, a second electromagnetic spring is arranged on the side of the cleaning plate 39 close to the punching column 36, and a cleaning tooth 391 is arranged on the top of the cleaning plate 39.

[0051] A punching method of a sheet metal punching device with thickness detection function;

[0052] The punching method comprises the following specific steps:

[0053] S1, placing the workpiece in the detection groove 11;

[0054] S2, extruding the workpiece by the extrusion plate 34 under the driving of the punching column 36;

[0055] S3, detecting that the air bag 21 outputs gas to the air outlet pipe 26 after being extruded, and detecting the gas flow in the air outlet pipe 26;

[0056] S4, the controller obtains the gas capacity output according to the gas flow, and then obtains the thickness of the detection air bag 21 being extruded, i.e. the working thickness, through the gas capacity;

[0057] S5, the punching column 36 punches and cleans the workpiece;

[0058] S6, taking out the workpiece.

[0059] The working principle of the present application is as follows:

[0060] When the workpiece to be punched is not placed on the machine body 1, at this time the extrusion plate 34 is located above the moving groove 32, and the upper surface of the detection air bag 21 is in the same plane as the surface of the moving groove 32, then the worker places the workpiece to be punched on the upper surface of the detection air bag 21, then the controller controls the hydraulic cylinder in the supporting block 31 to start, at this time the electromagnet in the expansion ring 361 is in the energized state, so when the push rod of the hydraulic cylinder pushes the rotating block 35 to move, the rotating block 35 pushes the punching column 36 to move, the punching column 36 moves towards the side close to the detection groove 11, when the punching column 36 moves, the expansion ring 361 is attracted to the outer wall of the punching column 36 under the action of the electromagnet, so that the punching column 36 drives the expansion ring 361 to move, when the expansion ring 361 moves, it encounters the snap ring 343, then the expansion ring 361 extends into the snap ring 343, the controller controls the driving motor to start, after the driving shaft of the driving motor rotates, it drives the punching column 36 to rotate, the punching column 36 drives the expansion ring 361 to rotate, the expansion ring 361 then rotates to stop in the clamping groove of the snap ring 343, then the driving motor stops;

[0061] The punching column 36 continues to move to the side close to the detection groove 11, and the punching column 36 drives the expansion ring 361 to move, and the expansion ring 361 exerts pressure on the extrusion plate 34, so that the extrusion plate 34 moves along the axis of the support 12, and the rotating gear on the extrusion plate 34 meshes with the rack on the support 12 to drive when the extrusion plate 34 moves, and after the lower surface of the extrusion plate 34 contacts the upper surface of the workpiece to be punched, the extrusion plate 34 continues to move to the side close to the detection groove 11, so that the extrusion plate 34 extrudes the workpiece to be punched downward, and the workpiece to be punched extrudes the detection air bag 21 downward, and the detection air bag 21 extrudes the support column 22 and the sliding tube 24, so that the support spring in the support column 22 shrinks, and the sliding tube 24 moves to the sliding groove in the punching tube 23, so that the sliding tube 24 shrinks into the sliding groove in the punching tube 23, and at the same time, after the detection air bag 21 is extruded, the internal pressure increases, and then the gas in the detection air bag 21 moves to the gas outlet tube 26 and is transported from the gas outlet tube 26 to the temporary storage cavity 27;

[0062] At the same time, the extrusion plate 34 encounters the moving groove 32 during movement, and then the extrusion plate 34 extends into the moving groove 32, and when the upper surface of the extrusion plate 34 is in the same plane as the upper surface of the machine body 1, the controller controls the first electromagnetic spring to be powered off, and then the first electromagnetic spring pushes the stop block 331 to extend into the contraction cavity 33, and then the stop block 331 moves to the side close to the clamping groove 341 and finally extends into the clamping groove 341 to be fixed, thereby making the workpiece to be punched extend completely into the detection groove 11;

[0063] When the extrusion plate 34 extrudes the workpiece to be punched, the gas in the detection air bag 21 continuously flows out to the gas outlet tube 26, and during the gas flow in the gas outlet tube 26, the controller controls the flow meter in the gas outlet tube 26 to start, the flow meter monitors the flow of the output gas and converts the flow signal into an electric signal and transmits it to the controller, and the controller compares the size of the flow to obtain the gas capacity output by the detection air bag 21 during extrusion. Since the detection air bag 21 is arranged in the detection groove 11, the area occupied by the detection air bag 21 is a constant area, and the capacity of the gas flow is obtained by detecting the gas flow, so that the controller obtains the height of the detection air bag 21 being extruded by dividing the capacity by the constant area of the detection air bag 21, that is, the thickness of the workpiece to be punched, thereby realizing the detection of the thickness of the workpiece to be punched, and the controller adjusts the punching force according to the thickness of the workpiece to be punched;

[0064] When the extrusion plate 34 is blocked by the stopper 331, the controller controls the electromagnet in the expansion ring 361 to be powered off, and then the controller controls the push rod of the hydraulic cylinder to reset, and then the push rod drives the rotating block 35 to rotate, and the rotating block 35 moves to drive the punching column 36 to move, so that the punching column 36 moves away from the detection groove 11, at this time the expansion ring 361 and the extrusion plate 34 are in a static state, when the punching column 36 moves to the punching height (the controller adjusts the punching height according to the thickness of the workpiece to be punched), the controller controls the push rod of the hydraulic cylinder to move to the side close to the detection groove 11, so that the punching column 36 passes through the punching hole 342 to punch the workpiece, and the waste produced by punching is sequentially through the sliding pipe 24 and the punching pipe 23, and finally falls into the waste cavity 25 for storage.

[0065] When the punching column 36 completes the punching of the workpiece, at this time the upper surface of the cleaning groove 38 and the lower surface of the workpiece are in the same plane, then the controller controls the second electromagnetic spring to be powered off, and then the second electromagnetic spring drives the cleaning plate 39 to move, so that the cleaning plate 39 extends into the cleaning groove 38, and at the same time the controller controls the booster pump in the air ring in the support block 31 to start, and the booster pump extracts the gas in the temporary storage cavity 27, and then the gas is transported to the air ring through the gas outlet pipe 26, and then transported to the air jet pipe 37 through the air ring, at the same time, the controller controls the driving motor to start, and the driving shaft of the driving motor drives the punching column 36 to rotate, and the punching column 36 drives the cleaning plate 39 to rotate when rotating, and because the top of the cleaning plate 39 is provided with cleaning teeth 391, the cleaning plate 39 drives the cleaning teeth 391 to rotate when rotating, and then the burrs generated on the bottom of the workpiece due to punching are cleaned, and the gas in the air jet pipe 37 flows through the channel between the adjacent two cleaning teeth 391, and the burrs and debris cleaned by the cleaning plate 39 are blown away.

[0066] When the punching is completed, the controller controls the first electromagnetic spring and the second electromagnetic spring to be electrified, then the first electromagnetic spring drives the stopper 331 to leave the clamping groove 341 and shrink into the shrink cavity 33, the second electromagnetic spring drives the cleaning plate 39 to shrink into the cleaning groove 38, then the controller controls the push rod of the hydraulic cylinder to reset, the push rod of the hydraulic cylinder drives the rotating block 35 to rise, when the rotating block 35 rises, the punching column 36 rises, when the bottom of the punching column 36 and the lower surface of the extrusion plate 34 are in the same plane, the controller controls the electromagnet in the expansion ring 361 to be electrified, the expansion ring 361 is immediately adsorbed with the punching column 36, then when the punching column 36 rises, the punching column 36 drives the expansion ring 361 to rise, when the expansion ring 361 rises, the extrusion plate 34 rises, at this time, the bottom of the punching column 36 is always in the punching hole 342, so that the punching hole 342 protects the bottom of the punching column 36, thereby prolonging the maintenance cycle of the punching column 36, at the same time, after the extrusion plate 34 leaves the workpiece surface, the detection air bag 21 loses the extrusion force, then the outside air enters the detection air bag 21 through the air inlet pipe, then the detection air bag 21 drives the workpiece to reset, finally the worker takes out the workpiece from the detection groove 11.

[0067] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one from another entity or action, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0068] Finally, it should be noted that: the above only describes the preferred embodiments of the present application, and is not used to limit the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A sheet metal punching device with thickness detection function, characterized in that: Include: Machine body (1), the top of machine body (1) is provided with detection groove (11), detection device (2) is arranged in detection groove (11), both sides of detection groove (11) are provided with support (12), the side of support (12) away from detection groove (11) is provided with punching device (3), detection device (2) includes: detection air bag (21), detection air bag (21) is arranged in detection groove (11), punching device (3) includes: support block (31), support block (31) is arranged between support (12); Several support columns (22) are arranged in the detection air bag (21), support spring is arranged in the support column (22), the support column (22) is made of rubber, the middle part of the detection air bag (21) is provided with a punching pipe (23), the side of the punching pipe (23) away from the detection groove (11) is provided with a sliding pipe (24), the side of the punching pipe (23) close to the sliding pipe (24) is provided with a sliding groove, the sliding pipe (24) is slidably connected with the sliding groove, the sliding groove is provided with a spring, the punching pipe (23) is communicated with the waste cavity (25); The bottom of the detection air bag (21) is symmetrically provided with an air outlet pipe (26) and an air inlet pipe, the side of the air outlet pipe (26) away from the detection air bag (21) is provided with a temporary storage cavity (27), the air outlet pipe (26) is provided with a one-way valve, the air outlet pipe (26) is also provided with a flowmeter, the support block (31) is provided with an air ring, the air outlet pipe (26) is communicated with the air ring, the air ring is provided with a booster pump; The surface of the machine body (1) is provided with a moving groove (32), the side wall of the moving groove (32) is provided with a contraction cavity (33), the contraction cavity (33) is provided with a stop block (331), the stop block (331) is slidably connected with the contraction cavity (33), a first electromagnetic spring is arranged between the stop block (331) and the contraction cavity (33); The opposite side of the support (12) is provided with a plurality of racks, a plurality of the racks are equidistantly arranged along the side edge of the support (12), the top of the moving groove (32) is provided with an extrusion plate (34), the side of the extrusion plate (34) close to the support (12) is provided with a rotating gear, the rotating gear is in meshing transmission with the rack, the side of the extrusion plate (34) close to the contraction cavity (33) is provided with a clamping groove (341).

2. The sheet metal punching device with thickness detection function according to claim 1, characterized in that: The hydraulic cylinder is arranged in the support block (31), the push rod of the hydraulic cylinder is provided with a rotating block (35), the rotating block (35) is provided with a driving motor, the driving shaft of the driving motor is provided with a punching column (36), the side wall of the punching column (36) is provided with an expansion ring (361), the expansion ring (361) is slidably connected with the punching column (36), the expansion ring (361) is provided with an electromagnet.

3. The sheet metal punching device with thickness detection function according to claim 2, characterized in that: The middle part of the extrusion plate (34) is provided with a punching hole (342), the surface of the extrusion plate (34) is provided with a snap ring (343), the punching column (36) is arranged above the punching hole (342), and the bottom of the punching column (36) is in the same plane as the lower surface of the extrusion plate (34).

4. The sheet metal punching device with thickness detection function according to claim 3, characterized in that: The punching column (36) is provided with a gas jet pipe (37) therein, the gas jet pipe (37) is communicated with a gas ring, the punching column (36) is provided with a cleaning groove (38) therein, the cleaning groove (38) is provided with a cleaning plate (39) therein, the cleaning plate (39) is in sliding connection with the cleaning groove (38), the side of the cleaning plate (39) close to the punching column (36) is provided with a second electromagnetic spring, and the top of the cleaning plate (39) is provided with a cleaning tooth (391).

5. The punching method applied to the sheet metal punching device with thickness detection function according to claim 4, characterized in that: The punching method comprises the following specific steps: S1, placing the workpiece in the detection groove (11); S2, extruding the workpiece by the extrusion plate (34) driven by the punching column (36); S3, detecting the gas output to the gas outlet pipe (26) after the gas bag (21) is extruded, and detecting the gas flow in the gas outlet pipe (26); S4, the controller obtains the gas capacity output according to the gas flow, and then obtains the thickness of the detection gas bag (21) extruded, that is, the working thickness, according to the gas capacity; S5, punching and cleaning the workpiece by the punching column (36); S6, taking out the workpiece.

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