CN108188305B

CN108188305B - Safe type punch press

Info

Publication number: CN108188305B
Application number: CN201810043064.8A
Authority: CN
Inventors: 严海民; 李晓华
Original assignee: Ningbo City Coston Precision Machinery Co ltd
Current assignee: Ningbo City Coston Precision Machinery Co ltd
Priority date: 2018-01-17
Filing date: 2018-01-17
Publication date: 2020-06-02
Anticipated expiration: 2038-01-17
Also published as: CN108188305A

Abstract

The invention discloses a safe punch press which comprises a rack, a crankshaft, a pressing block, a first rotating gear, a second rotating gear, a chain, a sliding plate, a base and two cams, wherein the crankshaft is arranged on the rack; the crankshaft moves up and down in the same direction as the control press block through rotation, the first rotating gear and the second rotating gear are respectively installed on the upper side and the lower side of the rack, the first rotating gear is coaxially and fixedly connected with one end of the crankshaft, the second rotating gear penetrates through the rack and can rotate, the cam is located on the left side and the right side of the rack and is fixedly installed on a gear shaft of the second rotating gear, the sliding plate is installed on the base, a connecting plate located on the left side and the right side of the sliding plate is arranged at the front end of the sliding plate and is in contact with the cam, the cam controls the sliding plate to slide forwards through the connecting plate while rotating, and the sliding plate comprises a resetting mechanism enabling the sliding plate to move backwards in a. The safety punch press is convenient to operate, safe, reliable and low in cost.

Description

Safe type punch press

Technical Field

The invention belongs to the field of stamping equipment, and particularly relates to a safety type punch.

Background

When traditional punch press punching press work piece, in order to improve the stability of work piece, generally need artifical manual with it fixed, but after the work fatigue like this, when opening the punch press carelessly, the staff can be crushed, very dangerous like this, and the drift also exposes in the outside in addition, has the potential safety hazard all the time.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the technical problem of preventing hands from being crushed by a punch press.

(II) technical scheme

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a safety punch comprises a rack, a crankshaft, a press block, a first rotating gear, a second rotating gear, a chain, a sliding plate, a base and two cams; the crankshaft moves up and down in the same direction as the control press block through rotation, the first rotating gear and the second rotating gear are respectively installed on the upper side and the lower side of the rack, the first rotating gear is coaxially and fixedly connected with one end of the crankshaft, the second rotating gear penetrates through the rack and can rotate, the cam is located on the left side and the right side of the rack and is fixedly installed on a gear shaft of the second rotating gear, the sliding plate is installed on the base, a connecting plate located on the left side and the right side of the sliding plate is arranged at the front end of the sliding plate and is in contact with the cam, the cam controls the sliding plate to slide forwards through the connecting plate while rotating, and the sliding plate comprises a resetting mechanism enabling the sliding plate to move backwards in a.

In the safety punch, the shape of the cam comprises a round block connected with a gear shaft of the gear and a protruding end provided with the outer edge of the round block, and the protruding end is in contact with the connecting plate and then drives the connecting plate to move forwards.

In the safe punch press, the top of the base is provided with the sliding groove, and the sliding plate is arranged in the sliding groove and can slide back and forth.

The safety punch further comprises a sliding rod, the base is further provided with sliding holes in the front and back directions, and the sliding grooves and the sliding holes are respectively located on the front side and the back side of the base; one end of the sliding rod can be inserted in the sliding hole in a sliding mode, and the other end of the sliding rod is fixedly connected with the sliding plate.

In the safety punch, the reset mechanism is in a spring structure, and the spring is sleeved on the sliding rod.

(III) advantageous effects

According to the safety punch press, the protective sleeve is arranged to always hide the punch in the protective sleeve, so that hands cannot extend to the bottom of the punch, and safety is improved. In addition, the automatic discharging device can automatically move the workpiece out of the punching position, so that the operation is very convenient, and the automatic discharging device is input by the power of the punch, so that the structure is simple and the cost is low.

Drawings

FIG. 1 is a front view of the first embodiment;

FIG. 2 is an internal view of the first embodiment;

FIG. 3 is an internal view of the second embodiment;

3 FIG. 3 4 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 3 3; 3

FIG. 5 is a state diagram of the use of FIG. 4;

in the figure, 1 is a frame, 2 is a crankshaft, 3 is a connecting rod, 4 is a pressing block, 5 is a protective sleeve, 6 is a base, 7 is a punch, 9 is a trepanning, 10 is a workpiece feeding port, 11 is a first rotating wheel, 12 is a second rotating wheel, 13 is a first gear, 14 is a second gear, 15 is a chain, 16 is a cam, 17 is a swinging piece, 18 is a rotating shaft, 19 is a gear shaft, 20 is a swinging shaft, 21 is a through hole, 22 is a contact block, 23 is a workpiece, 24 is a spring and 25 is a screw.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the prior art, a punching machine is known which comprises a crankshaft, a connecting rod and a punching head. The bent axle contains the pivot of left and right sides and is located between two pivots and eccentric connecting axle, and two pivots are on same axis, the bent axle is transversely installed in the frame, the one end and the eccentric swivelling joint of bent axle of connecting rod, the other end and the punching press head swivelling joint that can reciprocate, so bent axle and rotatory round can drive the punching press head and reciprocate once, specifically speaking, after the punching press head moves down to the end, the bent axle just in time rotates 180, after upwards moving to the end, the bent axle just in time rotates 180 and we have made further improvement on above-mentioned basis again.

The first embodiment is as follows: the safety punch press shown in fig. 1-2 comprises a frame 1, a crankshaft 2, a connecting rod 3, a pressing block 4 and a protective sleeve 5; the crankshaft 2, the connecting rod 3, the pressing block 4 and the protecting sleeve 5 are all positioned at the top of the base 6, the crankshaft 2 is transversely installed on the frame 1 and can rotate, the pressing block 4 is installed on the frame 1 and can move up and down, one end of the connecting rod 3 is eccentrically and rotatably connected with the crankshaft 2, and the other end of the connecting rod 3 is rotatably connected with the pressing block 4; the bottom of briquetting 4 and the top of base are provided with a drift 7 and a lag respectively, lag 5 is installed perpendicularly on base 6, lag 5 includes a circular shape trepanning 9, trepanning 9 cup joints all the time on drift 7, the front side of lag 5 is provided with a work piece entry 10 of sending into of being connected with trepanning 9.

When punching a workpiece, the workpiece is fed into the trepanning 9 along the workpiece feeding port 10 and the position of the workpiece is fixed through the shape of the trepanning 9, the height of the workpiece feeding port 10 can only accommodate a round workpiece, and then punching is carried out, and because the punch is always hidden in the trepanning 9 in punching and static states, the risk that hands are accidentally crushed is avoided, and the use is very safe.

Example two: the invention also comprises a first runner 11, a second runner 12, a first gear 13, a second gear 14, a chain 15, a cam 16 and a swinging piece 17; the bottom of the base 6 is provided with a transverse rotating shaft 18 which is rotationally connected with the frame 1, the first rotating wheel 11 and the second rotating wheel 12 are respectively and axially installed on the crankshaft 2 and the rotating shaft 18, the chain 15 is used for driving the first rotating wheel 11 and the second rotating wheel 12, the first gear 13 is axially sleeved on the rotating shaft 18, the base 6 is provided with a longitudinal gear shaft 19, the second gear 14 is positioned at the bottom of the base 6 and fixedly installed on the gear shaft 19, the first gear 13 and the second gear 14 are matched for transmission, the cam 16 is positioned at the top of the base 6 and fixedly connected with the gear shaft 19, the rear side of the protective sleeve 5 is provided with a through hole 21 communicated with the trepanning 9, the swinging piece 17 is installed at the top of the base 6 and provided with a swinging shaft 20 which is rotationally connected with the base, one end of the swinging piece 17 is rotationally connected with the swinging shaft 20, the other end is in rolling contact with the outer peripheral surface of the cam 16 and is swingably fitted toward the through hole 21 by the shape of the cam 16.

The cam 16 is in a circular shape, the circular shape is provided with a transverse tangent plane, and when the swinging piece 17 is contacted with the circular surface of the cam 16, the swinging piece is separated from the through hole; when the swing piece 17 contacts the tangent surface of the cam 16, the swing piece 17 moves toward the through hole and ejects the workpiece 23 in the pocket toward the workpiece feed opening.

The above described embodiment further includes an arcuate contact block 22, the contact block 22 being mounted on the swing block 17 for ejecting a workpiece 23 within the pocket.

The above embodiment further comprises a spring 24 and a screw 25, the screw 25 is mounted on the base 6, the two ends of the spring 24 are respectively connected with the screw 25 and the swinging plate 17, and the spring 24 is used for controlling the swinging plate 27 to move towards the through hole 21.

When the automatic material returning device works, a workpiece is firstly fed into the trepanning 9 along the workpiece feeding port 10 and the workpiece position is fixed through the shape of the trepanning 9, then the crankshaft 2 rotates 180 degrees to drive the punch to move downwards to complete punching, after the punching is completed, the crankshaft 2 rotates 180 degrees and then continuously rotates upwards to enable the punch to leave the surface of the workpiece, when the crankshaft 2 rotates until the punch leaves the surface of the workpiece, the circular surface of the cam 16 is separated from the swinging piece 17 to enable the tangent plane to be contacted with the swinging piece 17, then under the action of the spring, the swinging piece 17 resets and rotates to enable the contact block 22 of the swinging piece 17 to move towards the direction of the through hole and eject the workpiece, so that the cam 16 continuously rotates to enable the circular surface of the cam 16 to be contacted with the swinging piece 17, at the moment, the swinging piece 17 rotates to enable the contact block 22 to leave the trepanning 9 and the through hole, thereby completing automatic material, the cost is low.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A safety punch press is characterized by comprising a rack (1), a crankshaft (2), a connecting rod (3), a pressing block (4) and a protective sleeve (5); the crankshaft (2), the connecting rod (3), the pressing block (4) and the protecting sleeve (5) are all located on the top of the base (6), the crankshaft (2) is transversely installed on the rack (1) and can rotate, the pressing block (4) is installed on the rack (1) and can move up and down, one end of the connecting rod (3) is in eccentric rotation connection with the crankshaft (2), and the other end of the connecting rod is in rotation connection with the pressing block (4); the bottom of the pressing block (4) and the top of the base are respectively provided with a punch (7) and a protective sleeve, the protective sleeve (5) is vertically arranged on the base (6), the protective sleeve (5) comprises a sleeve hole (9), the sleeve hole (9) is always sleeved on the punch (7), and the front side of the protective sleeve (5) is provided with a workpiece feeding port (10) connected with the sleeve hole (9);

the device also comprises a first rotating wheel (11), a second rotating wheel (12), a first gear (13), a second gear (14), a chain (15), a cam (16) and a swinging piece (17); the bottom of the base (6) is provided with a transverse rotating shaft (18) which is rotatably connected with the rack (1), the first rotating wheel (11) and the second rotating wheel (12) are respectively and axially mounted on the crankshaft (2) and the rotating shaft (18), the chain (15) is used for driving the first rotating wheel (11) and the second rotating wheel (12), the first gear (13) is axially sleeved on the rotating shaft (18), the base (6) is provided with a longitudinal gear shaft (19), the second gear (14) is positioned at the bottom of the base (6) and fixedly mounted on the gear shaft (19), the first gear (13) and the second gear (14) are in matched transmission, the cam (16) is positioned at the top of the base (6) and fixedly connected with the gear shaft (19), the rear side of the protective sleeve (5) is provided with a through hole (21) communicated with the sleeve hole (9), the swinging piece (17) is installed at the top of the base (6) and is provided with a swinging shaft (20) which is rotatably connected with the base, one end of the swinging piece (17) is rotatably connected with the swinging shaft (20), the other end of the swinging piece is in rolling contact with the outer edge surface of the cam (16), and the end is in swinging fit towards the direction of the through hole (21) by utilizing the shape of the cam (16).

2. Safety punch according to claim 1, characterised in that the shape of the trepan (9) is circular.

3. The safety punching machine according to claim 1, characterized in that the shape of the cam (16) is a circle provided with a transversal cut, the oscillating piece (17) being separated from the through hole when it comes into contact with the circular face of the cam (16); when the swinging piece (17) is contacted with the tangent plane of the cam (16), the swinging piece (17) moves towards the direction of the through hole and ejects the workpiece (23) in the sleeve hole towards the direction of the workpiece feeding port.

4. The safety punch press according to claim 1, further comprising an arcuate contact block (22), the contact block (22) being mounted on the oscillating block (17) for ejecting the workpiece (23) from the pocket.

5. The safety punch press according to claim 1, further comprising a spring (24) and a screw (25), wherein the screw (25) is mounted on the base (6), two ends of the spring (24) are respectively connected with the screw (25) and the swinging plate (17), and the spring (24) is used for controlling the swinging plate (27) to move towards the through hole (21).