TWI601634B - Puncher with an automatic adjusting balancer - Google Patents

Description

Punch with automatic adjustment balancer

The invention relates to a balancer for a press, and in particular to a press with an automatic adjustment balancer.

Referring to FIG. 1 , there is a conventional press 10 with a balancer, comprising: a base 11 , a slider set 12 disposed on the base 11 and reciprocally movable, a crankshaft 13 , and a crankshaft 13 connected thereto. The connecting rod 14 of the slider set 12 and a driving unit (not shown) for electrically connecting the crankshaft 13. By driving the crankshaft 13 to rotate by the driving unit, the slider group 12 can be driven to move the mold 15 up and down to perform the pressing operation on the material.

Generally, the upper side of the connecting rod 14 is provided with a lateral through hole 141, and the crankshaft 13 is rotatably connected to the connecting rod 14 through the through hole 141. To reduce the frictional force, the through hole 141 of the connecting rod 14 is provided on the hole wall. The copper 16 and the connecting rod 14 are in contact with the crankshaft 13 by the copper joint 16. Due to the weight relationship of the slider group 12 and the like, there is a certain gap between the crankshaft 13 and the lower side of the copper alloy 16, and when there is a load, The gap moves downward to generate vibration or noise. In order to avoid the above situation, and to balance the weight of the slider group 12, the mold 15, the connecting rod 14 and the crankshaft 13, and to make the movement smooth and smooth, the press is also provided with two balances. The two balancers 17 are respectively disposed on the left and right sides of the base 11, and the common balancer 17 is a hydraulic cylinder or a pneumatic cylinder. The rods 171 of the two balancers 17 are respectively opposite to the upper side of the slider group 12. The connection, by the pulling force of the balancer 17, overcomes the gravity of the slider group 12, the mold 15, the connecting rod 14 and the load, so that the crankshaft 13 and the copper 16 are in smooth contact.

In addition, the punching machine usually has a punching screen (not shown) for displaying and setting various operating parameters of the punching machine, but the punching machine also has the following deficiencies: the punching machine is based on the theory provided by the designer. The values of the slider group 12, the mold 15, the link 14, and the crankshaft 13 are estimated to set the output of the balancer 17, and sometimes the output of the balancer 17 is set by itself based solely on personal experience and the movement of the slider group 12. The theoretically estimated weight tends to be different from the actual one, and the personal experience of different commissioning personnel is different. The setting value is often different, and when the mold 15 is replaced, it may be forgotten to readjust the output of the balancer 17 or it may not be correct due to limited experience. Adjustment, the above several conditions may lead to inaccurate output setting of the balancer 17, which will make the local strength load at the junction of the copper 16 and the crankshaft 13 too heavy, so that the copper 16 is easy to wear; the copper 16 and the crankshaft 13 are partially The gap is too small, resulting in heat and even seizure; local heating will generate additional energy consumption, making the input power of the main motor insufficient, affecting the stamping product Accuracy.

Therefore, how to develop a punch with an automatic adjustment balancer, which can solve the above defects is the creative motive of the present invention.

The object of the present invention is to provide a punching machine with an automatic adjusting balancer, which mainly makes the contact effect of the crankshaft and the copper joint optimal, and the punching machine is in an optimal working state.

In order to achieve the foregoing objective, a punch press with an automatic adjustment balancer according to the present invention includes: a base; a slider set that can be reciprocally moved to the base; and a link that drives the slider a crankshaft rotatably disposed on the connecting rod to drive the connecting rod to move; a copper joint disposed between the crankshaft and the connecting rod; an automatic adjusting balancer comprising two balancing units and a pneumatic tube a road, a pressure sensing unit, and a pressure control unit, wherein:

The balance unit is respectively disposed on two sides of the base, and each has a body and a rod body, wherein each of the bodies is respectively fixed on two sides of the base, and each of the rods is automatically telescopically In the body, and has a rod connecting portion that drives the slider group;

The pneumatic pipeline connects the body;

The pressure sensing unit is disposed in the air pressure pipeline to measure the pressure in the air pressure pipeline, and has a pressure standard value and a pressure sensing value, and when the pressure sensing unit measures the pressure standard value When the lever body of the balance unit is in a first position, when the pressure sensing unit detects that the pressure sensing value is the same as the pressure standard value, the lever body of the balance unit remains in the first position, when the When the pressure sensing unit detects that the pressure sensing value is different from the pressure standard value, the lever body of the balancing unit is in a second position;

The pressure control unit is disposed in the air pressure line and communicates with the pressure sensing unit. When the rod body of the balance unit is in the second position, the pressure control unit controls the pressure in the air pressure line, so that the pressure control unit The rod of the balancing unit remains in the first position.

Preferably, each of the balancing units is a hydraulic cylinder.

Preferably, the body of each of the balancing units has a gas pressure space, a first gas pressure inlet and outlet communicating with the gas pressure space, and a second gas pressure inlet and outlet communicating with the gas pressure space, the rod body further having a displacement a piston portion disposed in the air pressure space between the first and second air pressure inlets and outlets, the air pressure line communicating with the first and second air pressure inlets and outlets of the body.

Preferably, the method further comprises a mold disposed on the lower end surface of the slider group.

Accordingly, the present invention is mainly configured by the pressure sensing unit being coupled to the pressure control unit such that when the rod body of the balancing unit is in the second position, the pressure control unit can control the pressure in the pneumatic line, so that The rod body of the balance unit is maintained in the first position, so that the contact effect between the crankshaft and the copper is optimal and the smoothest, and the punching machine is in an optimal working state.

The present invention has been described in connection with the preferred embodiments of the present invention in accordance with the accompanying drawings.

Referring to FIG. 2 to FIG. 4, a punching machine with an automatic adjusting balancer is mainly provided by a base 21, a slider set 22, a connecting rod 23, a crankshaft 24, and a punching machine. Copper 25, and an automatic adjustment balancer, wherein:

The slider group 22 is disposed on the base 21 so as to be reciprocally movable up and down. In the embodiment, a first die 26 having a first weight is disposed on a lower end surface of the slider set 22.

The connecting rod 23 is connected to drive the slider set 22.

The crankshaft 24 is rotatably inserted through the link 23 to drive the link 23 to actuate.

The copper 25 is provided between the crankshaft 24 and the link 23.

Since the base 21, the slider set 22, the connecting rod 23, the crankshaft 24, and the copper 25 are all known components, and their configurations and actuation methods are the same as those of the prior art, and are not the focus of the present invention. Therefore, the detailed structure and operation of these components will not be described in detail.

The automatic balancer includes a second balancing unit 30, a pneumatic line 40, a pressure sensing unit 50, and a pressure control unit 60, wherein:

The balance unit 30 is disposed on each side of the base 21 and has a body 31 and a rod 32. Each of the bodies 31 is respectively fixed on two sides of the base 21, and each of the rods 32 is a main body 31 that is automatically telescopically provided, and has a rod connecting portion 321 that connects the slider group 22; in this embodiment, each of the balancing units 30 is a hydraulic cylinder. Each of the bodies 31 has a gas pressure space 311, a first gas pressure inlet and outlet 312 communicating with the gas pressure space 311, and a second gas pressure inlet and outlet 313 communicating with the gas pressure space 311. The rod body 32 is further provided with a displacement. A piston portion 322 located in the air pressure space 311 between the first and second air pressure inlets and outlets 312, 313.

The air pressure line 40 communicates with the first and second air pressure inlets and outlets 312, 313 of the body 31 and is connected to an air pressure source 90.

The pressure sensing unit 50 is disposed in the air pressure line 40 to measure the pressure in the air pressure line 40, and has a pressure standard value and a pressure sensing value, and is measured by the pressure sensing unit 50. When the pressure standard value is obtained, the rod body 32 of the balancing unit 30 is in a first position, and when the pressure sensing unit 50 detects that the pressure sensing value is the same as the pressure standard value, the rod body 32 of the balancing unit 30 Maintaining the first position, when the pressure sensing unit 50 determines that the pressure sensing value is different from the pressure standard value, the lever 32 of the balancing unit 30 is in a second position; in this embodiment, the The pressure sensing unit 50 is disposed on the air pressure line 40 that communicates with the first air pressure inlet and outlet 312 of the body 31.

The pressure control unit 60 is disposed in the air pressure line 40 and communicates with the pressure sensing unit 50. When the rod 32 of the balancing unit 30 is in the second position, the pressure control unit 60 controls the air pressure line. The internal pressure maintains the rod body 32 of the balance unit 30 in the first position. In the present embodiment, the pressure control unit 60 is disposed on the air pressure line 40 that communicates with the first air pressure inlet and outlet 312 of the body 31.

The above description is the structure and configuration description of each main component of the embodiment of the present invention. The mode of operation and efficacy of the present invention are described below.

Referring to FIG. 2, the lower end surface of the slider group 22 is provided with a first mold 26 having a first weight, and the pressure sensing unit 50 measures the pressure in the air pressure pipeline 40 as a pressure standard value. At this time, the rod body 32 of the balance unit 30 is in a first position, and when the rod body 32 of the balance unit 30 is in the first position, the tension of each of the balance units 30 is overcome by the slider group 22, the first The gravity of the mold 26, the connecting rod 23 and the load causes the crankshaft 24 to come into contact with the copper 25 in the most stable state.

Referring to FIG. 3, when the lower end surface of the slider group 22 is replaced by the second mold 27, the second weight of the second mold 27 is different from the first weight of the first mold 26, which is used in this embodiment. The second weight of the second mold 27 is greater than (or less than) the first weight of the first mold 26 as an example, so that the rods 32 of each of the balance units 30 are lowered (or raised) in the second position (in this case, FIG. 3 intentionally The second position is exaggerated for easy understanding. At the same time, the pressure sensing unit 50 determines that the pressure sensing value is different from the pressure standard value. At this time, referring to FIG. 4, the pressure control unit 60 Controlling the pressure in the air line 40 to raise (or descend) the rod 32 of the balancing unit 30 from the second position to the first position and maintain the first position, thereby allowing the crankshaft 24 and the copper The contact effect of 25 is kept in the best and most stable state, and the punching machine is in the best working condition.

In summary, the present invention mainly includes the pressure sensing unit being coupled to the pressure control unit such that when the rod body of the balance unit is in the second position, the pressure control unit can control the pressure in the air pressure line. Keeping the rod body of the balance unit in the first position, the contact effect between the crankshaft and the copper is optimal and the smoothest, and the punching machine is in an optimal working state, and the above embodiments and drawings are only the present invention. The preferred embodiments are intended to be within the scope of the invention as defined by the scope of the invention.

[知知]
11‧‧‧After
12‧‧‧ slider group
13‧‧‧ crankshaft
14‧‧‧ Connecting rod
141‧‧‧through hole
15‧‧‧Mold
16‧‧‧Bronze
17‧‧‧balancer
171‧‧‧ rod body
[this invention]
21‧‧‧ machine base
22‧‧‧ slider group
23‧‧‧ Connecting rod
24‧‧‧ crankshaft
25‧‧‧Bronze
26‧‧‧First mould
27‧‧‧Second mold
30‧‧‧Balance unit
31‧‧‧Ontology
311‧‧‧ air pressure space
312‧‧‧First pressure inlet and outlet
313‧‧‧Second pressure inlet and outlet
32‧‧‧ rod body
321‧‧‧ rod joint
322‧‧‧Piston Department
40‧‧‧ pneumatic line
50‧‧‧ Pressure sensing unit
60‧‧‧ Pressure Control Unit
90‧‧‧Air pressure source

Fig. 1 is a schematic view showing the structure of a conventional punching machine with a balancer. 2 is a schematic view showing an embodiment of the present invention, showing a state in which the slider group is provided with the first mold and the rod body of the balance unit is in the first position. 3 is a schematic view showing an embodiment of the present invention, showing a state in which the slider group is provided with the second mold, and the rod body of the balance unit is in the second position. 4 is a schematic view showing an embodiment of the present invention, showing a state in which the slider group is provided with the second mold, and the rod body of the balance unit is in the first position.

21‧‧‧ machine base

22‧‧‧ slider group

23‧‧‧ Connecting rod

24‧‧‧ crankshaft

25‧‧‧Bronze

26‧‧‧First mould

27‧‧‧Second mold

30‧‧‧Balance unit

31‧‧‧Ontology

311‧‧‧ air pressure space

312‧‧‧First pressure inlet and outlet

313‧‧‧Second pressure inlet and outlet

32‧‧‧ rod body

321‧‧‧ rod joint

322‧‧‧Piston Department

40‧‧‧ pneumatic line

50‧‧‧ Pressure sensing unit

60‧‧‧ Pressure Control Unit

90‧‧‧Air pressure source

Claims (4)

A punching machine with an automatic adjusting balancer, comprising: a base; a slider set, which is arranged to be reciprocally movable up and down on the base; a connecting rod connected to drive the slider set; a crankshaft rotatably disposed The connecting rod is driven to drive the connecting rod; a copper joint is disposed between the crankshaft and the connecting rod; an automatic adjusting balancer comprises two balancing units, a pneumatic pipeline, a pressure sensing unit, and a The pressure control unit, wherein: the balance unit is respectively disposed on two sides of the base, and each has a body and a rod body, wherein each of the bodies is respectively fixed on two sides of the base, each of the rods The utility model is capable of being automatically telescopically disposed on the body, and has a rod connecting portion for driving the slider group; the air pressure pipeline is connected to the body; the pressure sensing unit is disposed in the air pressure pipeline to measure the a pressure in the pneumatic line, and having a pressure standard value and a pressure sensing value, and when the pressure sensing unit measures the pressure standard value, the balance unit has a rod in a first position, when the pressure The sensing unit measures the pressure sensing value When the pressure standard value is the same, the rod body of the balance unit is maintained at the first position, and when the pressure sensing unit detects that the pressure sensing value is different from the pressure standard value, the rod body of the balance unit is in a a second position; the pressure control unit is disposed in the air pressure line and communicates with the pressure sensing unit. When the rod body of the balance unit is in the second position, the pressure control unit controls the air pressure line The pressure maintains the shaft of the balancing unit in the first position. A punch press with an automatic adjustment balancer according to claim 1, wherein each of the balance units is a hydraulic cylinder. The punching machine with an automatic adjusting balancer according to claim 1, wherein the body of each balancing unit has a gas pressure space, a first gas pressure inlet and outlet communicating with the gas pressure space, and a second gas pressure communicating with the gas pressure space. The rod body further has a piston portion displaceably disposed in the air pressure space between the first and second air pressure inlets and outlets, and the air pressure tube communicates with the first and second air pressure inlets and outlets of the body. A punching machine with an automatic adjustment balancer according to claim 1, further comprising a mold disposed on a lower end surface of the slider group.