CN216937907U

CN216937907U - Lever punch press

Info

Publication number: CN216937907U
Application number: CN202220661319.9U
Authority: CN
Inventors: 李广仁
Original assignee: Guangzhou Liwan Lilong Metal Ceiling Material Factory
Current assignee: Guangzhou Liwan Lilong Metal Ceiling Material Factory
Priority date: 2022-03-23
Filing date: 2022-03-23
Publication date: 2022-07-12
Anticipated expiration: 2032-03-23

Abstract

The utility model discloses a lever punching machine, which comprises a lower die holder and an upper die holder, wherein a driving structure is arranged on the lower die holder, a punching table is arranged on the top surface of the lower die holder, a punching structure positioned above the punching table is arranged on the upper die holder, and the driving structure is connected with the punching structure through a transmission structure; the transmission structure comprises a crankshaft and a connecting rod; the punching structure comprises a lever and a punch, a rotating shaft penetrating through the lever is further arranged on the upper die base, the lever is located above the connecting rod and can rotate, and the punch and the connecting rod are connected with the two ends of the lever respectively. The lever punch press replaces a flywheel with a lever, the lever is driven to rotate through the crankshaft, when punching pressure needs to be increased, the rotating radius of the lever is increased, the rotating radius of the crankshaft is correspondingly increased, the rotating speed of the lever cannot be slowed down, and production efficiency is effectively guaranteed. The lever punch press is only increased in length, the width and the height of the lever punch press do not need to be increased, the increase of the whole weight is far smaller than that of the existing punch press, and the phenomenon of superelevation is avoided even if the height of the lever punch press does not need to be increased.

Description

Lever punch press

Technical Field

The utility model belongs to the technical field of punching machines, and particularly relates to a lever punching machine.

Background

The punching process of the punch, namely the punching press, has the advantages of saving materials and energy sources, having high efficiency and low technical requirement on operators and being capable of manufacturing products which cannot be achieved by mechanical processing through various die applications compared with the traditional mechanical processing, so that the punch has wider and wider application.

The existing punch press adopts the design principle that circular motion is converted into linear motion, a main motor drives a flywheel, the linear motion of a sliding block is achieved through crankshaft transmission, and a crankshaft in the flywheel rotates for one circle to complete one-time up-and-down motion, namely one-time punching. The connecting rod and the sliding block need to have a transfer point of circular motion and linear motion, and the design of the connecting rod and the sliding block is roughly provided with two mechanisms, one is spherical, and the other is pin-shaped (cylindrical), and the circular motion is converted into the linear motion of the sliding block through the mechanism. Since the press presses the material to plastically deform the material to obtain a desired shape and accuracy, a set of dies (divided into an upper die and a lower die) must be fitted to the material, the material is placed therebetween, the press presses the material to deform the material, and a reaction force caused by a force applied to the material during the process is absorbed by a mechanical body of the press.

The existing punch has the following defects: when the punching pressure is increased, the diameter of the flywheel is increased in the prior art, but after the diameter of the flywheel is increased, the rotating speed is reduced, the punching frequency is reduced, and the production efficiency is influenced; and in order to accommodate the increase in flywheel diameter, the size of the existing punch press needs to be increased, resulting in an increase in overall weight.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lever punching machine, which solves the problem that the punching pressure of the existing punching machine is increased by increasing the diameter of a flywheel.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a lever punching machine comprises a lower die base and an upper die base, wherein a driving structure is arranged on the lower die base, a punching table is arranged on the top surface of the lower die base, a punching structure positioned above the punching table is arranged on the upper die base, and the driving structure is connected with the punching structure through a transmission structure;

the transmission structure comprises a crankshaft connected with the output end of the driving structure and a connecting rod connected with the crankshaft; the punching structure comprises a lever connected with the connecting rod and a punch arranged on the lever, the upper die holder is further provided with a rotating shaft penetrating the lever, and the lever is located above the connecting rod and can rotate by taking the rotating shaft as a center.

In one possible design, the driving structure comprises a motor, a reduction gearbox and a transmission belt which are sequentially connected, one end of the transmission belt is wound on the output end of the reduction gearbox, and the other end of the transmission belt is wound on the crankshaft.

In a possible design, the drift is including fixing the drift body on the lever and being located the punching press slider of drift body below, wherein, is equipped with the sleeve on the upper die base, and the punching press slider is worn to establish in the sleeve, still is equipped with reset spring on the punching press slider, and the upper and lower both ends of punching press slider all extend to outside the sleeve.

In one possible design, the punch body is provided as a punch or roller.

In one possible design, the rotating shaft penetrates through the middle of the lever, and the punch body and the connecting rod are respectively connected with two ends of the lever; or the connecting rod and the rotating shaft are respectively positioned at two ends of the lever, and the punch body is fixed on the lever and positioned between the connecting rod and the rotating shaft.

In one possible design, two stamping sliding blocks are arranged from bottom to top, a first pressing plate matched with the punch body is arranged at the top end of the stamping sliding block located above, and a second pressing plate located above the stamping table is arranged at the lower end of the stamping sliding block located below.

In one possible design, the upper die base comprises two side plates and a top plate, the lower ends of the two side plates are respectively fixed on the lower die base, and the upper ends of the two side plates are connected through the top plate; correspondingly, the punching table is fixed on the lower die base and positioned between the two side plates.

In one possible design, the lower die holder, the side plate and the top plate are integrally formed, and a groove body for the lever to pass through in a reciprocating mode is formed in the top plate.

Has the advantages that:

the lever punch press replaces a flywheel with a lever, the lever is driven to rotate through the crankshaft, when punching pressure needs to be increased, the rotating radius of the lever is increased, the rotating radius of the crankshaft is correspondingly increased, the rotating speed of the lever cannot be reduced, and production efficiency is effectively guaranteed. Meanwhile, the input force can be amplified and then output as stamping pressure based on the lever principle, the requirement on the driving force output by the driving structure is reduced, and the labor-saving effect is achieved.

As a whole, the lever punching machine is only increased in length, the width and the height are not required to be increased, the increase of the whole weight is far smaller than that of the existing punching machine, the difficulty in maintenance and transportation is increased to a limited extent, and the lever punching machine is convenient to use. The height is not increased, the phenomenon of superelevation is avoided, the application range is ensured, and the practicability is improved.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, and it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope.

FIG. 1 is a schematic side view of a lever punch press with the punch pressed downward.

FIG. 2 is a schematic side view of a lever punch press with the punch moving upward.

Fig. 3 is a schematic front view of a lever punch press when the punch moves upward.

Fig. 4 is a schematic front view of a lever punch press when the punch is pressed down.

FIG. 5 is a schematic diagram of a side view of a lever punch with a hinge at the end of the lever.

In the figure:

1. a lower die holder; 101. a punching stage; 102. a sleeve; 2. an upper die holder; 21. a side plate; 22. a top plate; 201. a rotating shaft; 3. a drive structure; 31. a motor; 32. a reduction gearbox; 33. a transmission belt; 4. a transmission structure; 41. a crankshaft; 42. a connecting rod; 5. stamping a structure; 51. a lever; 52. a punch; 521. a punch body; 522. and (6) stamping the sliding block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some, but not all embodiments of the present invention.

Example (b):

as shown in fig. 1-5, a lever punching machine comprises a lower die holder 1 and an upper die holder 2, wherein a driving structure 3 is arranged on the lower die holder 1, a punching table 101 is arranged on the top surface of the lower die holder 1, a punching structure 5 positioned above the punching table 101 is arranged on the upper die holder 2, and the driving structure 3 is connected with the punching structure 5 through a transmission structure 4; the transmission structure 4 comprises a crankshaft 41 connected with the output end of the driving structure 3 and a connecting rod 42 connected with the crankshaft 41; the punching structure 5 comprises a lever 51 connected with the connecting rod 42 and a punch 52 arranged on the lever 51, a rotating shaft 201 penetrating through the lever 51 is further arranged on the upper die base 2, wherein the lever 51 is positioned above the connecting rod 42 and can rotate by taking the rotating shaft 201 as a center, and the punch 52 and the connecting rod 42 are respectively connected with two ends of the lever 51.

The lever punch press is structurally improved, a lever 51 replaces a flywheel, a transmission line is improved, and the crankshaft 41 is driven to rotate by the flywheel in the prior art, so that the crankshaft 41 drives the lever 51 to rotate. Therefore, when the punching pressure needs to be increased, the rotating radius of the lever 51 is increased, the rotating radius of the crankshaft 41 is correspondingly increased, the rotating speed of the lever 51 cannot be reduced, and the production efficiency is effectively ensured. Meanwhile, the input force can be amplified and then output as stamping pressure based on the principle of the lever 51, the requirement for the driving force output by the driving structure 3 is reduced, and the effect of saving labor is achieved.

During operation, the driving structure 3 is started, the driving structure 3 drives the crankshaft 41 to rotate, and the connecting rod 42 connected with the crankshaft 41 moves up and down under the driving of the crankshaft 41; and the connecting rod 42 is connected with the lever 51, the lever 51 will be driven by the connecting rod 42 to swing back and forth around the rotating shaft 201, and the punch 52 moves up and down along with the lever 51.

Further, referring to fig. 1-2, the rotating shaft 201 is inserted through the middle of the lever 51, and the plunger 52 and the connecting rod 42 are respectively connected to two ends of the lever 51, so that the up-and-down moving directions of the connecting rod 42 and the plunger 52 are opposite to each other.

Alternatively, referring to fig. 5, the link 42 and the shaft 201 are respectively located at both ends of the lever 51, and the punch 52 is fixed on the lever 51 and located between the link 42 and the shaft 201, so that the up-and-down moving directions of the link 42 and the punch 52 are the same.

When the crankshaft 41 rotates for a circle, the connecting rod 42 completes one up-and-down movement, the lever 51 completes one reciprocating swing, the punch 52 also completes one up-and-down movement, namely one punching, and the above process is repeated, and the crankshaft 41 continuously rotates under the driving of the driving structure 3 and completes multiple punching. The punching die and the product to be processed are placed on the punching table 101, and the punch 52 reciprocates up and down to complete the punching of the product to be processed.

The structure of the lever punch is further described as follows:

in this embodiment, the driving structure 3 comprises a motor 31, a reduction box 32 and a transmission belt 33 connected in sequence, one end of the transmission belt 33 is wound on the output end of the reduction box 32, and the other end of the transmission belt 33 is wound on the crankshaft 41.

When the lever punching machine works, a worker controls the starting and stopping of the motor 31 so as to control whether the lever punching machine works or not. Then, when the motor 31 is started, the driving force is transmitted to the crankshaft 41 through the motor 31, the reduction gearbox 32 and the transmission belt 33, and the crankshaft 41 starts to rotate and drives the connecting rod 42 to move up and down. After the motor 31 is stopped, the reduction gear box 32, the transmission belt 33, the crankshaft 41, and the like are gradually stopped.

Based on this, the driving structure 3 is flexible to control, and can be selected by a manual switch or an electric switch according to actual use conditions; in the same way, the motor 31 and the reduction gearbox 32 can be any suitable market model, and are flexible and convenient to use and good in practicability.

The structure of the punch 52 is improved, specifically, the punch 52 includes a punch body 521 fixed on the lever 51 and a punching slider 522 located below the punch body 521, wherein the upper die base 2 is provided with the sleeve 102, the punching slider 522 is arranged in the sleeve 102 in a penetrating manner, the punching slider 522 is further provided with a return spring, and the upper end and the lower end of the punching slider 522 both extend out of the sleeve 102.

Based on the design, the punch 52 is disassembled, the length of the punch body 521 moving along an arc line is reduced, the punch body is closer to vertical up-and-down movement, and the punching slider 522 moves along the vertical direction, so that the acting force applied to the product to be processed is perpendicular to the product to be processed, namely, punching in the vertical direction is ensured, the precision of machinery and the quality of the product are ensured, and impact on the product to be processed and a punching die in the horizontal direction is also avoided.

During punching, the punching die and the product to be processed are placed on the punching table 101 and located below the punching slider 522, the punch body 521 is fixed on the lever 51 and moves up and down along with the swinging of the lever 51, the punch body 521 moves downwards and impacts the punching slider 522, and the punching slider 522 moves downwards under the impact action, so that the product to be processed is punched. The punching slider 522 is reset by a reset spring after punching so as to perform the next punching at the impact of the punch body 521.

In one possible implementation, the punch body 521 is provided as a punch or roller. Specifically, when the punch body 521 is a punch rod, that is, any suitable specification is selected from existing models, the cost is reduced. When the punch body 521 is a roller, that is, the punch body 521 is configured to be circular, when the punch body 521 presses the punch slider 522, rolling friction exists between the punch body 521 and the punch slider 522, friction is smaller, and abrasion is smaller.

The link 42 is connected to the end of the lever 51, but the positions of the rotating shaft 201 and the punch body 521 have various arrangements, specifically as follows:

in one possible implementation, referring to fig. 1-2, the rotating shaft 201 is disposed through the middle of the lever 51, and the punch body 521 and the connecting rod 42 are respectively connected to two ends of the lever 51.

In another possible implementation, referring to fig. 5, the link 42 and the shaft 201 are respectively located at two ends of the lever 51, and the punch body 521 is fixed on the lever 51 and located between the link 42 and the shaft 201.

Based on the above design, exert pressure to punching press slider 522 through drift body 521, become vertical up-and-down motion with the arcuate motion, guarantee to be vertical punching press to the mould to improve mechanical precision and the quality of product. And the user can choose the production conditions according to the actual production conditions, which is not limited by the present invention. Accordingly, the position of the press table 101 is also moved correspondingly.

Optionally, as shown in fig. 1-2, two stamping sliders 522 are arranged from bottom to top, a first pressing plate adapted to the punch body 521 is arranged at the top end of the stamping slider 522 located above, and a second pressing plate located above the stamping table 101 is arranged at the lower end of the stamping slider 522 located below. It is easy to understand that the length of the sleeve 102 can be increased appropriately to increase the number of the punch sliders 522, and the moving distance of the punch sliders 522 can be adjusted flexibly by using the modularization concept.

In this embodiment, the upper die base 2 includes two side plates 21 and a top plate 22, the lower ends of the two side plates 21 are respectively fixed on the lower die base 1, and the upper ends of the two side plates 21 are connected through the top plate 22; accordingly, the punching stage 101 is fixed on the lower die base 1 and located between the two side plates 21. Based on this, effectively reduced the weight of upper die base 2, reduced complete machine weight, convenient to maintain and transport.

In a possible realization, the lower die holder 1, the side plate 21 and the top plate 22 are integrally formed; therefore, through the application of the integral forming process, the performance is improved, the failure rate is reduced, and the service life is effectively prolonged.

In one possible implementation, the top plate 22 is provided with a slot for the lever 51 to pass through in a reciprocating manner. Namely, the situation that the top plate 22 interferes with the movement of the connecting rod 42 is avoided, the completion of the punching is ensured, and the collision damage of the top plate 22 and the connecting rod 42 is also avoided.

Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lever punching machine is characterized by comprising a lower die holder (1) and an upper die holder (2), wherein a driving structure (3) is arranged on the lower die holder (1), a punching table (101) is arranged on the top surface of the lower die holder (1), a punching structure (5) positioned above the punching table (101) is arranged on the upper die holder (2), and the driving structure (3) is connected with the punching structure (5) through a transmission structure (4);

the transmission structure (4) comprises a crankshaft (41) connected with the output end of the driving structure (3) and a connecting rod (42) connected with the crankshaft (41); the punching structure (5) comprises a lever (51) connected with the connecting rod (42) and a punch (52) arranged on the lever (51), a rotating shaft (201) penetrating through the lever (51) is further arranged on the upper die holder (2), and the lever (51) is located above the connecting rod (42) and can rotate by taking the rotating shaft (201) as a center.

2. The lever punch press according to claim 1, wherein the driving structure (3) comprises a motor (31), a reduction gearbox (32) and a transmission belt (33) which are connected in sequence, one end of the transmission belt (33) is wound on the output end of the reduction gearbox (32), and the other end of the transmission belt (33) is wound on the crankshaft (41).

3. The lever punch press according to claim 1, wherein the punch (52) comprises a punch body (521) fixed on the lever (51) and a punching slider (522) located below the punch body (521), wherein the upper die holder (2) is provided with a sleeve (102), the punching slider (522) is arranged in the sleeve (102) in a penetrating manner, the punching slider (522) is further provided with a return spring, and the upper end and the lower end of the punching slider (522) both extend out of the sleeve (102).

4. A lever punch press according to claim 3, characterised in that the punch body (521) is provided as a punch bar or a roller.

5. The lever punch press according to claim 3 or 4, wherein the rotating shaft (201) is arranged in the middle of the lever (51) in a penetrating manner, and the punch body (521) and the connecting rod (42) are respectively connected with two ends of the lever (51); or the connecting rod (42) and the rotating shaft (201) are respectively positioned at two ends of the lever (51), and the punch body (521) is fixed on the lever (51) and positioned between the connecting rod (42) and the rotating shaft (201).

6. The lever punch press according to claim 3, wherein the number of the punching sliders (522) is two from bottom to top, the top end of the punching slider (522) positioned above is provided with a first pressing plate matched with the punch body (521), and the lower end of the punching slider (522) positioned below is provided with a second pressing plate positioned above the punching table (101).

7. The lever punch press as claimed in claim 1, wherein the upper die holder (2) comprises two side plates (21) and a top plate (22), the lower ends of the two side plates (21) are respectively fixed on the lower die holder (1), and the upper ends of the two side plates (21) are connected through the top plate (22); correspondingly, the punching table (101) is fixed on the lower die holder (1) and positioned between the two side plates (21).

8. The lever punch press as claimed in claim 7, wherein the lower die holder (1), the side plate (21) and the top plate (22) are integrally formed, and a slot body for the lever (51) to pass through in a reciprocating manner is formed on the top plate (22).