CN111804791A

CN111804791A - Punching machine

Info

Publication number: CN111804791A
Application number: CN202010664581.4A
Authority: CN
Inventors: 林宝勤; 林宝林
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-10-23

Abstract

The invention discloses a punch press which comprises a workbench, a rack, a motor, a crankshaft, a first connecting rod and a punch assembly, wherein the rack is fixed on the rear side of the workbench, the motor is fixed on the rack, the motor drives the punch assembly to do reciprocating linear motion through the crankshaft and the first connecting rod, the punch assembly comprises a punch shaft connected with the first connecting rod and a punch connected to the bottom of the punch shaft, the punch comprises a fixed head and a movable head, and the movable head retracts into the fixed head after receiving an upward acting force and extends out of the fixed head after the upward acting force disappears. The punch is provided with the fixed head and the movable head, in the punching process, when the punch moves downwards to enable the movable head to be in contact with a workpiece and receive an upward acting force, the movable head retracts into the fixed head to not influence the punching operation, and when the punch moves upwards after the punching is finished, the movable head extends out of the fixed head to enable the workpiece to be separated from the fixed head after the upward acting force disappears, so that the phenomenon that the punch is stuck is effectively prevented.

Description

Punching machine

Technical Field

The invention relates to the field of machining, in particular to a punch.

Background

The punching machine is a machining device which is very common in use, a punch head assembly of the existing punching machine usually moves in a reciprocating linear mode under the driving of a crankshaft, the punch head assembly comprises a punching shaft and a punch head connected to the bottom of the punching shaft, the punching shaft drives the punch head to ascend and descend between the highest point and the lowest point of a stroke so as to punch a workpiece, but in the punching operation process, the workpiece is usually adhered to the punch head and cannot be automatically separated, namely, so-called adhesive materials are adhered, and the next punching operation is influenced.

Disclosure of Invention

The invention aims to provide a punch press.

In order to solve the problems, the invention adopts the following technical scheme:

the invention discloses a punch press which comprises a workbench, a rack, a motor, a crankshaft, a first connecting rod and a punch assembly, wherein the rack is fixed on the rear side of the workbench, the motor is fixed on the rack and drives the punch assembly to do reciprocating linear motion through the crankshaft and the first connecting rod, the punch assembly comprises a punch shaft connected with the first connecting rod and a punch connected to the bottom of the punch shaft, the punch comprises a fixed head and a movable head, and the movable head retracts into the fixed head after receiving an upward acting force and extends out of the fixed head after the upward acting force disappears.

Further, be equipped with in the fixed head and hold the chamber, hold the intracavity and be equipped with the elastic component, the activity head stretches into and holds intracavity and elastic component butt, and the activity head stretches out down to hold the chamber under the effect of elastic component.

Further, the elastic member is a cylindrical and elastic rubber member.

Further, a plurality of springs are embedded in the elastic piece.

Further, the plurality of springs are evenly distributed annularly around a central axis of the elastic member.

Further, it is equipped with the throat to hold the chamber bottom, and the activity head is including activity shoulder and activity main part, and the elastic component setting is at activity shoulder top and hold between the chamber top, and the elastic component supports the shoulder that will move about to holding the throat department in chamber.

Furthermore, a sealing gasket is arranged between the movable shoulder and the necking of the containing cavity, and the sealing gasket is sleeved on the movable main body.

Furthermore, a punching shaft cylinder is fixed on the front side of the rack and located right above the workbench, the punching shaft penetrates through the punching shaft cylinder, and the bottom of the punching shaft extends out of the punching shaft cylinder and then is fixedly connected with the fixing head.

Furthermore, a material-removing opening is formed in the workbench, and limiting blocks are arranged on two sides of the material-removing opening.

Furthermore, the workbench is provided with a turntable and a push rod device for pushing the turntable to rotate, and a plurality of stations are uniformly distributed on the turntable in an annular manner.

The punch is provided with the fixed head and the movable head, in the punching process, when the punch moves downwards to enable the movable head to be in contact with a workpiece and receive an upward acting force, the movable head retracts into the fixed head to not influence the punching operation, and when the punch moves upwards after the punching is finished, the movable head extends out of the fixed head to enable the workpiece to be separated from the fixed head after the upward acting force disappears, so that the phenomenon that the punch is stuck is effectively prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic perspective view of a first embodiment of the present invention;

FIG. 2 is a right side view of FIG. 1;

FIG. 3 is a schematic perspective view of the slider shown in FIG. 1 after changing its position;

FIG. 4 is a cross-sectional view of a punch according to a second embodiment of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.

The first embodiment is as follows: referring to fig. 1 to 3, a punching machine of this embodiment includes a worktable 1, a frame 2, a motor 3, a crankshaft 4, a first connecting rod 5 and a punch assembly 6, the frame 2 is fixed at the rear side of the worktable 1, the motor 3 is fixed at the rear side of the frame 2, the rear side of the frame 2 is provided with a motor bracket 7, the motor 3 is mounted on the motor bracket 7, the motor 3 is provided with a motor gear 8, the crankshaft 4 is mounted on the frame 2, one end of the crankshaft 4 penetrates through the side part of the rack 2 and is connected with a crankshaft gear 9, the motor gear 8 is in transmission connection with the crankshaft gear 9 through a belt 10, the motor 3 drives the crankshaft 4 to rotate through the motor gear 8, the crankshaft gear 9 and the belt 10, the punch assembly 6 is connected with the crankshaft 4 through a first connecting rod 5, the crankshaft 4 rotates under the driving action of the motor 3 and drives the punch assembly 6 to perform reciprocating linear motion through the first connecting rod 5, and therefore punching operation is performed on a workpiece on the working table 1.

In this embodiment, first connecting rod 5 is connected with second connecting rod 11 and third connecting rod 12 coaxially, namely first connecting rod 5, second connecting rod 11 and third connecting rod 12 are connected with coaxial rotation, the one end that second connecting rod 11 keeps away from first connecting rod 5 is connected with the eccentric rotation in bent axle 4 edge, the one end position that first connecting rod 5 was kept away from to third connecting rod 12 is connected on frame 2 adjustably, can keep away from the position of the one end of first connecting rod 5 through adjusting third connecting rod 12 like this, the effective radius of rotation of the relative bent axle 4 central line of second connecting rod 11 is adjusted fast, and then the stroke regulation of drift subassembly 6 has been realized, and it is very convenient to operate, so work efficiency has been improved. Particularly, frame 2 front side is fixed with backup pad 13 and support frame 14, backup pad 13 is located the below of support frame 14, be equipped with spout 15 in the backup pad 13, spout 15 is joined in marriage and is equipped with slider 16, slider 16 can slide in spout 15, third connecting rod 12 and slider 16 fixed connection, can be through the position of adjusting slider 16 in spout 15 like this, come the effective radius of rotation of the relative bent axle 4 central line of quick adjustment second connecting rod 11, spout 15 is the arc spout, be convenient for the regulation of the effective radius of rotation of the relative bent axle 4 central line of second connecting rod 11 is linear change.

In order to adjust the position of the sliding block 16 in the sliding slot 15 conveniently, in this embodiment, a connecting shaft 17 is arranged between the third connecting rod 12 and the sliding block 16, one end of the connecting shaft 17 is fixedly connected with the sliding block 16, the other end of the connecting shaft 17 is rotatably connected with the third connecting rod 12, a threaded hole is arranged on the connecting shaft 17, a screw 18 is matched and connected in the threaded hole, the position of the sliding block 16 in the sliding slot 15 can be adjusted and fixed by adjusting the relative position between the screw 18 and the connecting shaft 17, a rotating shaft 19 is connected on the supporting frame 14, the rotating shaft 19 is rotatably installed on the supporting frame 14, a driving gear 20 is arranged on the rotating shaft 19, a driven gear 21 and a connecting frame 40 are arranged on the screw 18, the connecting frame 40 is in an L shape, the vertical edge of the connecting frame 40 is rotatably connected with the rotating shaft 19 and is attached to the supporting frame 14, the, the driven gear 21 is meshed with the driving gear 20, so that the screw 18 is in transmission connection with the rotating shaft 19, and one end of the rotating shaft 19 extends out of the supporting frame 14 to form a knob 22.

The punch assembly 6 of this embodiment includes the drift axle 23 of being connected with first connecting rod 5 rotation and connects the drift 24 in the drift axle 23 bottom, and frame 2 front side is fixed with dashes a section of thick bamboo 25, dashes a section of thick bamboo 25 and is located workstation 1 directly over, dashes that the axle 23 wears to establish in dashing a section of thick bamboo 25, dashes 23 bottoms stretch out behind a section of thick bamboo 25 and fixed connection with fixed head 26, and in the punching press operation, fixed head 26 and work piece effect realize the punching press action. Be equipped with the material mouth 27 of taking off on the workstation 1, the both sides of taking off material mouth 27 are equipped with and carry out spacing stopper 28 to the work piece, stopper 28 position sets up on workstation 1 adjustably, and the work piece of punching press can be followed and is taken off material mouth 27 and fall and obtain the collection, certainly also can not set up material mouth 27 and stopper 28 of taking off, but be equipped with the carousel and promote carousel pivoted push rod device on workstation 1, annular evenly distributed has a plurality of stations on the carousel, can realize like this that the work piece is placed in batches.

When the stroke of the punch assembly 6 is to be adjusted, the knob 22 can be screwed so as to rotate the screw 18, and due to the threaded connection between the screw 18 and the connecting shaft 17, the rotation of the screw 18 can drive the connecting shaft 17 to move along the screw 18, so that the position of the slider 16 in the sliding groove 15 can be changed, and further, the effective rotating radius of the second connecting rod 11 relative to the central line of the crankshaft 4 can be quickly adjusted, namely, the stroke adjustment of the punch assembly 6 is completed.

Example two: as shown in fig. 4, the present embodiment refines the structure of the punch 24, and the punch 24 includes a fixed head 26 and a movable head 29, and the movable head 29 retracts into the fixed head 26 after receiving an upward force and extends out of the fixed head 26 after the upward force disappears. In this way, during the punching process, after the punch 24 moves downwards to make the movable head 29 contact with the workpiece and receive an upward acting force, the movable head 29 retracts into the fixed head 26 without influencing the punching operation, and after the punch 24 moves upwards after the punching process is finished, the movable head 29 extends out of the fixed head 26 after the upward acting force disappears to make the workpiece separate from the fixed head 26, so that the phenomenon of material sticking is effectively prevented.

In this embodiment, be equipped with in the fixed head 26 and hold chamber 30, it is equipped with elastic component 31 to hold the intracavity 30, activity head 29 stretches into and holds chamber 30 in and 31 butt with elastic component, activity head 29 stretches out and holds chamber 30 in the effect part of elastic component 31, it is equipped with the throat to hold chamber 30 bottom, activity head 29 includes activity shoulder 32 and activity main part 33, elastic component 31 sets up between activity shoulder 32 top and the chamber 30 top of holding, under the normality, elastic component 31 supports activity shoulder 32 to support to the throat department that holds chamber 30, this elasticity 31 is the tube-shape and has elastic rubber spare, so the effort is more balanced, and the embedded a plurality of springs 34 that is equipped with of elastic component 31, a plurality of springs 34 are around the central axis annular evenly distributed of elastic component 31, in order to ensure that the elasticity of elastic component 31 still satisfies the requirement after long-term use. In order to ensure the sealing performance of the accommodating cavity 30, a sealing gasket 35 is arranged between the movable shoulder 32 and the necking of the accommodating cavity 30, and the sealing gasket 35 is sleeved on the movable main body 33.

Because this embodiment has increased movable head 29, so this embodiment can be automatic takes off the effect of material, so can effectively prevent the punching press sizing.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a punch press, includes workstation, frame, motor, bent axle, first connecting rod and drift subassembly, and the rear side at the workstation is fixed to the frame, and the motor is fixed in the frame, and the motor passes through bent axle, the reciprocal linear motion of first connecting rod drive drift subassembly, and the drift subassembly includes the drift of being connected the axle of dashing that is connected with first connecting rod and connects in the drift of dashing axle bottom, its characterized in that, the drift includes fixed head and movable head, and the movable head retracts to in the fixed head after receiving ascending effort to stretch out the fixed head after ascending effort disappears.

2. The punching machine according to claim 1, wherein the fixed head is provided with a containing cavity therein, the containing cavity is provided with an elastic member therein, the movable head extends into the containing cavity to abut against the elastic member, and the movable head partially extends out of the containing cavity under the action of the elastic member.

3. The punch press according to claim 2, wherein the elastic member is a cylindrical and elastic rubber member.

4. The punch press of claim 2, wherein a plurality of springs are embedded in the elastic member.

5. The punch press of claim 2, wherein the plurality of springs are evenly distributed annularly about a central axis of the resilient member.

6. The punching machine according to claim 2, wherein the bottom of the accommodating cavity is provided with a necking, the movable head comprises a movable shoulder and a movable main body, the elastic member is arranged between the top of the movable shoulder and the top of the accommodating cavity, and the elastic member abuts the movable shoulder to the necking of the accommodating cavity.

7. The punching machine as claimed in claim 6, wherein a gasket is arranged between the movable shoulder and the necking of the containing cavity, and the gasket is sleeved on the movable main body.

8. The punching machine according to claim 1, wherein a punching shaft cylinder is fixed on the front side of the frame, the punching shaft cylinder is positioned right above the workbench, the punching shaft penetrates through the punching shaft cylinder, and the bottom of the punching shaft extends out of the punching shaft cylinder and is fixedly connected with the fixing head.

9. The punching machine according to claim 1, wherein a material releasing opening is arranged on the workbench, and two sides of the material releasing opening are provided with limiting blocks.

10. The punching machine according to claim 1, wherein the worktable is provided with a turntable and a push rod device for pushing the turntable to rotate, and a plurality of stations are annularly and uniformly distributed on the turntable.