CN204412883U - Punching tool for hydraulic press - Google Patents

Abstract

The utility model discloses a punching tool for an oil press, which comprises an upper die which is arranged on a press head of the oil press and can reciprocate up and down together with the press head, wherein the upper die comprises an upper connecting plate (11) fixed at the bottom of the press head of the oil press, an upper die ejector plate (12) arranged at the bottom of the upper connecting plate and an upper die punching needle (13) arranged at the bottom of the upper die ejector plate, and the upper die punching needles are uniformly distributed at the bottom of the upper die ejector plate in a circumferential shape; the lower mould of setting on the hydraulic press base, the lower mould punch needle (23) including fixing lower connecting plate (21), lower mould ejector plate (22) and the lower mould that sets up at lower mould ejector plate top at the lower connecting plate top, the lower mould punch the needle and be circumference form evenly distributed at lower mould ejector plate top. The utility model has the advantages that: the technical defects of high labor input and low working efficiency in the prior art are overcome.

Description

Punching tool for hydraulic press

technical field

The utility model relates to a punching tool for an oil press.

Background technique

There are 25 assembly holes on the bearing seat, which can be die-cast on the die-casting machine before. Just remove the gate of the bearing seat and the burrs on the appearance. Due to the wear of the mold core, the 25 assembly holes on the bearing seat are blocked, which affects the later bearing seat. assembly. If it is necessary to repair or replace the assembly hole core on the bearing seat mold, it is limited by the large number of sizes on the mold core and not all core sizes are not perfect, so it is necessary to replace the core Replacing all the cores, basically half of the entire mold has been replaced, which is uneconomical in terms of economy and efficiency. Considering the cost, most of the assembly holes on the bearing seat in the prior art are made of The staff beat it manually. Specifically, the bearing seat is installed on the fixture, and the assembly hole is tapped with a hammer to open the position where the assembly hole is to be opened. Although this manual method solves the problem of replacing the core, it is manually operated. The efficiency is still very low. On average, each worker only completes about 600 pieces a day. After deducting the labor input from the cost of replacing cores, the reduction in cost input is not obvious.

Contents of the invention

The purpose of the utility model is to provide a punching tool for a hydraulic press, which solves the technical defects of high labor input and low work efficiency in the prior art.

For solving the problems referred to above, the technical scheme that the utility model takes is:

A punching tool for a hydraulic press, comprising

An upper die set on the hydraulic press head that can reciprocate up and down together with the press head, the upper die includes an upper connecting plate fixed at the bottom of the hydraulic press head, an upper die ejector plate arranged at the bottom of the upper connecting plate and a The upper die punching pins at the bottom of the upper die ejector plate, the upper die punching pins are evenly distributed in a circular shape at the bottom of the upper die ejector plate;

The lower mold is arranged on the base of the hydraulic press, and the upper mold includes a lower connection plate fixed on the top of the base of the hydraulic press, a lower die ejector plate arranged on the top of the lower connection plate, and a lower die punch arranged on the top of the lower die ejector plate, The punch pins of the lower die are evenly distributed in a circular shape on the top of the ejector plate of the lower die.

As a further improvement of the present utility model, an upper mold bottom plate is arranged between the upper connecting plate and the upper mold ejector plate, and the upper mold bottom plate and the upper mold ejector plate are connected by an upper mold spring.

As a further improvement of the utility model, an upper positioning hole is opened on the ejector plate of the upper mold, and an upper positioning pin is arranged in the upper positioning hole, and the top end of the upper positioning pin is fixed on the upper mold base.

As a further improvement of the present invention, a lower die bottom plate is arranged between the lower connecting plate and the lower die ejector plate, and the lower die bottom plate and the lower die ejector plate are connected by a lower die spring.

As a further improvement of the present utility model, the upper plate of the lower mold is provided with a lower positioning hole through its upper and lower sides, and a lower positioning pin is arranged in the lower positioning hole, and the bottom end of the lower positioning pin is fixed on the bottom plate of the lower mold.

The beneficial effects of the utility model are as follows: 1. The bearing seat is placed on the lower mold, and the upper mold is driven to reciprocate in the vertical direction by the up and down movement of the pressure head of the hydraulic press. When the upper mold moves downward, the upper mold on the upper mold The punching pin and the punching pin of the lower die on the lower die squeeze the bearing seat respectively, and punch out the assembly holes at both ends of the bearing seat. The whole stamping process only needs to place the bearing seat on the lower die and start the punching machine, which is relatively automatic. High, saving a lot of time, the field test proves that using the tooling of the utility model, the average workload of each worker is about 2000 per day, compared with the workload of about 600 per day by manual beating in the prior art, Efficiency has been greatly improved.

2. The bottom plate of the upper die and the top plate of the upper die are connected by the spring of the upper die, and the bottom plate of the lower die and the top plate of the lower die are connected by the spring of the lower die. When the upper die moves downward, the spring of the upper die and the top plate of the lower die The spring acts as a buffer, which prolongs the pressing time of the upper die punching pin and the lower die punching pin of the bearing seat, reduces the defective rate of the bearing seat, that is, improves the qualified rate.

3. The upper positioning pin and the lower positioning pin are set to position the upper die ejector plate and the lower die ejector plate when they move up and down, so as to prevent the upper die ejector plate and the lower die ejector plate from shifting during movement Cause the punching failure of the bearing seat.

Description of drawings

Fig. 1 is the front view of the utility model.

Fig. 2 is a view from the direction of P in Fig. 1 .

Among them: 11, upper connecting plate, 12, upper die ejector plate; 13, upper die punching needle; 14, upper die bottom plate; 15, upper die spring; 16, upper positioning hole; 17, upper positioning pin;

21, lower connecting plate, 22, lower die ejector plate; 23, lower die punching pin; 24, lower die bottom plate; 25, lower die spring; 26, lower positioning hole; 27, lower positioning pin.

Detailed ways

Below in conjunction with accompanying drawing, the specific embodiment of the present utility model is described further.

The punching tool for the hydraulic press shown in Figures 1 and 2 includes an upper die which is arranged on the hydraulic press head and which can reciprocate up and down together with the press head, and a lower die which is arranged on the hydraulic press base.

The upper die includes an upper connecting plate 11 fixed on the bottom of the hydraulic press head, an upper die bottom plate 14 fixed on the upper connecting plate 11 by bolts, and the bottom of the upper die bottom plate 14 is connected with an upper die spring 15 Die jacking plate 12, the top and the bottom of described upper mold spring 15 are respectively fixed on the upper mold bottom plate 14 and the upper mold jacking plate 12, specifically can be the fixing mode of welding boarding, described upper mold jacking plate The bottom of 12 is provided with punching pins 13 of the upper die, and the punching pins 13 of the upper die are evenly distributed on the bottom of the upper die ejector plate 12 in a circular shape. The upper positioning holes 16 on the top and bottom of the ejector plate 12, the three upper positioning holes 16 are distributed along the circumference on the upper mold ejector plate 12, and each of the three upper positioning holes 16 is provided with an upper positioning hole. Pin 17, the top of the upper positioning pin 17 is fixed on the upper mold bottom plate 14, which can be welded or screwed. In this embodiment, bolt holes are preferably opened on the upper mold bottom plate 14, and the upper positioning pin 17 The top is fixed in the bolt hole by thread, and the diameter of the upper positioning pin 17 is slightly smaller than the diameter of the positioning hole 16, so when the upper die spring 15 stretches up and down, the upper die ejector plate 12 can move up and down along the upper positioning pin 17 sports.

The lower mold includes a lower connecting plate 21 fixed on the top of the base of the hydraulic press, a lower mold bottom plate 24 fixed on the lower connecting plate 21 by bolts, and the top of the lower mold bottom plate 14 is connected to the lower mold top material by a lower mold spring 25 plate 22, the upper and lower ends of the lower die spring 25 are respectively fixed on the lower die base plate 14 and the lower die ejector plate 22, and the connection between the lower die spring 25 and the lower die base plate 14 and the lower die ejector plate 22 can be welding and other fixing methods, the top of the lower die ejector plate 22 is provided with lower die punching pins 23, and the lower die punching pins 23 are evenly distributed in a circumferential shape on the top of the lower die ejector plate 22, and the lower die The ejector plate 22 is provided with three lower positioning holes 26 that run through the top and bottom of the lower die ejector plate 22 up and down. The three lower positioning holes 26 are evenly distributed in a circumferential shape on the top of the lower die ejector plate 22. A lower positioning pin 27 is arranged in each of the three lower positioning holes 26, and the bottom end of the lower positioning pin 27 is fixed on the bottom plate 24 of the lower mold. The fixing method can be welding or threaded connection. Threaded connection is fixed, specifically the same as the connection between the upper positioning pin 26 and the upper mold base plate 14, which will not be described in detail here. The diameter of the lower positioning pin 27 is slightly smaller than the diameter of the lower positioning hole 26. Therefore, when the lower mold spring 25 stretches up and down, the lower The top plate 22 can move up and down along the lower positioning pin 27 .

In the utility model, the number of punching pins 13 of the upper die and punching pins 23 of the lower die is determined by the number of assembly holes that need to be punched out on the bearing seat. The number of die punching pins 23 is more, and vice versa. If the number of assembly holes at both ends of the bearing seat is different, only need to adjust the number of upper die punching pins 13 and lower die punching pins 23, so that the upper die punching pins 13 and the lower die The number of punching pins 23 should be the same as the number of assembly holes at both ends of the bearing seat.

The usage method of the utility model is: place the bearing seat with the gate removed on the lower mold, and pay attention that the punching needle 23 of the lower mold is aligned with the part to be punched out of the assembly hole, connect the power supply of the hydraulic press, start the switch button of the hydraulic press, and the hydraulic press The indenter moves downward, driving the upper mold to move downward together. The upper mold punching pin 13 on the upper mold contacts the bearing seat and the upper mold continues to move downward to squeeze the bearing seat. When the bearing seat is squeezed, the upper mold Both the die spring 15 and the lower die spring 25 are compressed, the lower die punch pin 23 also squeezes the bearing seat, and the upper die punch pin 13 and the lower die punch pin 23 punch out the assembly hole on the bearing seat After the assembly hole on the bearing seat is punched in place, the pressure head of the hydraulic press is lifted up, driving the upper mold to move upward slowly, and at the same time, the upper mold spring 15 and the lower mold spring 25 are slowly stretched and returned to the original position before being compressed. state, after the upper die spring 15 and the lower die spring 25 return to their original lengths, the pressure head of the hydraulic press continues to move upward with the upper die, and breaks away from the bearing seat. After the bearing seat is punched, the lower bearing seat is removed and the next bearing Punching of seat mounting holes.

What is not specifically described in the utility model is the prior art, or can be realized through the prior art, and it should be understood that the specific implementation cases described in the utility model are only preferred implementation examples of the utility model. It is not intended to limit the implementation scope of the present utility model. That is, all equivalent changes and modifications made according to the content of the patent scope of the utility model should be regarded as the technical category of the utility model.

Claims (5)

1. a hydraulic press punching tool, is characterized in that: comprise

Be arranged on the patrix that hydraulic press pressure head can pump together with pressure head, described patrix comprises and is fixed on upper junction plate (11) bottom hydraulic press pressure head, is arranged on the patrix die pad (12) of upper junction plate (11) bottom and is arranged on the patrix red needle (13) of patrix die pad (12) bottom, described patrix red needle (13) bottom patrix die pad (12) circumferentially shape be uniformly distributed;

Be arranged on the counterdie on hydraulic press base, the counterdie red needle (23) that described counterdie comprises the lower connecting plate (21) being fixed on hydraulic press base top, the counterdie die pad (22) being arranged on lower connecting plate (21) top and is arranged on counterdie die pad (22) top, described counterdie red needle (23) at counterdie die pad (22) top circumferentially shape be uniformly distributed.

2. hydraulic press punching tool according to claim 1, it is characterized in that: be provided with baffle plate (14) between described upper junction plate (11) and patrix die pad (12), described upper baffle plate (14) is connected by patrix spring (15) with between patrix die pad (12).

3. hydraulic press punching tool according to claim 2, it is characterized in that: described patrix die pad (12) has its upper and lower upper locating hole (16) through, arrange alignment pin (17) in described upper locating hole (16), the top of described upper alignment pin (17) is fixed on baffle plate (14).

4. hydraulic press punching tool according to claim 1, it is characterized in that: be provided with lower mould bottom plate (24) between described lower connecting plate (21) and counterdie die pad (22), described lower mould bottom plate (24) is connected by counterdie spring (25) with between counterdie die pad (22).

5. hydraulic press punching tool according to claim 4, it is characterized in that: described counterdie die pad (22) has its upper and lower lower locating hole (26) through, arrange lower alignment pin (27) in described lower locating hole (26), the bottom of described lower alignment pin (27) is fixed in lower mould bottom plate (24).