WO2017179843A1

WO2017179843A1 - Press device facilitating stroke height adjustment and having improved power saving and safety

Info

Publication number: WO2017179843A1
Application number: PCT/KR2017/003626
Authority: WO
Inventors: 김진강; 이경구
Original assignee: 김진강
Priority date: 2016-04-12
Filing date: 2017-04-03
Publication date: 2017-10-19
Also published as: KR101631519B1

Abstract

The present invention relates to a press device having improved power saving and safety, comprising: an upward driving part provided at a frame, and connected to an upper press so as to move the upper press upward when power is applied, such that the initial state thereof is maintained; a raising/lowering driving part provided at the frame, and connected to the upper press so as to raise/lower the upper press within a raising/lowering stroke distance; and a press driving part provided at the frame, and pressing a pusher downward so as to machine a material when the upper press is completely lowered by the raising/lowering driving part such that the lower end of the pusher is supported by the upper end of a hitting part of the upper press. Therefore, vertical stroke transferring, which has a relatively large stroke distance from an initial position, at which the upper press is raised, to a lowered position right before the material is machined, is performed by the low-output raising/lowering driving part, thereby preventing an accident, and material machining only at a small vertical stroke transferring distance, in which the body of an operator cannot enter, is performed by the high-output press driving part. Therefore, most of the raising/lowering stroke of the upper press is performed by the low-output raising/lowering driving part, and the very small stroke for material machining is performed by the high-output press driving part, such that power consumption is minimized. In addition, while a press motor is rotated at a relatively large angle of 360°, the pusher is raised/lowered only at a minimum distance for pressing the material, such that material pressing force is maximized.

Description

Press device with improved safety and stroke height and improved power saving

The present invention relates to a press apparatus, and more particularly, to a press apparatus which is easy to adjust safety and stroke height and improves power saving.

In general, a press apparatus is a compression processing machine that applies a force to a material with or without heating to plastically deform it into a desired shape to produce a product. The compression force of the press mainly uses electric motors, and there are hydraulic, hydraulic, and pneumatic presses using water, oil, and air pressure. Pressing can process unheated materials and obtain accurate dimensions and shapes. Short machining times enable mass production, and a wide range of products, from small and precise parts to large mechanical parts.

The conventional press apparatus is provided with an upper press and a lower press, and puts the material to be processed on the lower press to produce an article by pressing the upper press.

To process materials with very high toughness and strength, such as steel plates, the pressing force of the upper press must be very large. Therefore, a very large power source must be provided to raise and lower the upper press, thereby increasing the power consumption by that amount.

In addition, safety accidents such as a finger pinching between the upper press and the lower press frequently occurs, in this case there is a problem that a large accident is caused by the pressing force of the upper press is operated with a very large force.

[Preceding technical literature]

[Patent Documents]

(Patent Document 1) Korean Patent Application No. 10-2010-0041365

An object of the present invention for solving the above problems is that most of the lifting stroke of the upper press is made by the low-power lifting drive, and very small stroke for the material processing is made by a separate high-power press drive. It is to provide a press device with improved safety and stroke height and improved power saving.

Another object of the present invention is to provide a press device with improved safety and easy stroke height adjustment, which allows the pusher to be lifted only a minimum distance to pressurize the material while the press motor is rotated at a relatively large angle by 360 °. It is.

Still another object of the present invention is to provide a press device with improved power saving and stability, which allows the lifting operation of the pusher and the hitting part and the lifting operation of the upper press to be sequentially performed only by the reverse rotation driving of the lifting motor.

It is still another object of the present invention to provide a press apparatus having improved power saving and stability such that free fall of the upper press is prevented when power is cut off from the press apparatus.

It is still another object of the present invention to provide a press apparatus having improved power saving and stability for adjusting the lifting stroke of the pusher by only a relatively simple operation of rotating the stroke adjusting screw of the upper and lower stroke adjusting portions clockwise or counterclockwise. .

In order to achieve the above object, a press device having improved safety and stroke height adjustment and improved power saving may include a frame, a lower die on which a material to be installed and processed on the frame is mounted, and a material to be elevated on the frame, A press apparatus having an upper press for processing, the press apparatus installed on the frame and connected to the upper press to move the upper press upward when power is applied to maintain an initial state; An elevating driving unit installed on the frame and connected to the upper press to elevate the upper press within the elevating stroke; Installed in the frame and the upper press is completed by the lifting driving unit is completed by pressing the lower end of the pusher to the upper end of the hitting portion of the upper press press drive to process the material by pressing the pusher downward; A pusher releasing unit installed on the frame and pushing the pusher to lift the upper press when the material is processed by the press driving unit to release from the hitting unit; When installed in the frame and the external power is cut off or the power of the rising motor is cut off is characterized in that the self-falling prevention portion is further provided to be prevented from falling by the upper press to the upper press by the self-weight.

According to another aspect of the present invention, the press device includes a press motor, a drive pulley coupled to the press motor shaft of the press motor, and a frame mounted on the press motor. The first worm shaft and the second worm shaft for transmitting power to the pusher, the first electric pulley coupled to the first worm shaft and the rotational power of the press motor is transmitted, and the rotational power of the press motor connected to the driving pulley and the first electric pulley Is coupled to a first transmission belt, a second transmission pulley and a third transmission pulley respectively coupled to the first worm shaft and the second worm shaft, and a second transmission pulley and the third transmission pulley to transmit the first worm shaft to the first worm shaft. A second transmission belt for transmitting the rotational power of the press motor transmitted to the second worm shaft, first and second worms respectively coupled to the first worm shaft and the second worm shaft, and installed on the frame and connected to the pusher to press Push the motor The first worm wheel and the second worm wheel, and the worm wheel shaft, which is installed on the worm wheel shaft and coupled to the first worm and the second worm, respectively, and transmits the power transmitted to the worm wheel shaft to the worm wheel shaft. Lifting operation cam is rotated with the worm wheel shaft coupled to, and is connected to the lifting operation cam consists of a pusher to be elevated during the rotation of the lifting operation cam.

Another feature of the press device, which is easy to adjust the safety and stroke height of the present invention and improved power saving, the pusher release portion is coupled to the elevating drive shaft of the elevating drive unit to rotate together with the elevating drive shaft when the elevating motor of the elevating drive unit is driven. And a release cam for pushing the pusher toward the rear side of the frame so that the end of the pusher is separated from the upper end of the hitting portion, and the elevating second electric gear of the elevating drive unit engaged with the first rack of the upper press, together with the elevating second electric gear. A rolling piece that is rotated and has an arc-shaped non-motorized groove formed thereon, and an interlocking pin that protrudes on one side of the release cam and rotates with the release cam and is located in the non-electric groove of the rolling element; Within the forming range of the non-powered groove, only the release cam and the interlocking pin are rotated when the lifting power shaft rotates to separate the lower end of the pusher from the top of the hitting part, and the lifting power shaft is rotated so that the interlocking pin is supported on one side of the non-powered groove. If it continues to rotate the rotational power of the interlocking pin is transmitted to the rolling piece is provided to rotate the rolling piece and the second elevating electric gear.

Another feature of the press device which is easy to adjust the safety and stroke height of the present invention and improved power saving, the self-falling fall prevention portion is fixed to the upper press, the ratchet gear which is elevated with the upper press, and the ratchet gear to be fitted and separated Electromagnet switch that is installed on the frame and the ratchet is installed on the frame and connected to the ratchet so that the ratchet can be separated from the ratchet gear when power is applied to the lift motor of the lift drive unit, and the ratchet is engaged with the ratchet gear when the lift motor is cut off. Is made of.

Another feature of the press device which is easy to adjust the safety and stroke height of the present invention and improved power saving, the lifting operation cam and the pusher, to adjust the lifting stroke of the pusher by moving the upper end of the pusher to the front or rear side of the frame. The upper and lower stroke adjusting unit is further provided, the upper and lower stroke adjusting unit is embedded in the inner space of the elevating operation cam and provided to be moved back and forth along the inner space, and is coupled to the elevating operation cam and the moving block to which the upper end of the pusher is connected. It is made of a stroke adjusting screw for adjusting the position of the pusher by moving the moving block in the inner space.

The present invention as described above, the upper drive is installed on the frame and connected to the upper press to move the upper press to maintain the initial state when the power is applied, and the upper press is installed on the frame and connected to the upper press Lifting drive unit for elevating within the lifting stroke distance, and press drive unit for processing the material by pressing the pusher downward when the upper press is installed on the frame and the upper press is lowered by the lifting drive unit and the lower end of the pusher is supported on the top of the hitting part of the upper press. It is provided. Therefore, the vertical stroke transfer, which has a relatively large stroke length from the initial position where the upper press is raised to the lowering position immediately before the workpiece processing, is made by the low-power lifting driver to prevent safety accidents, and the machining of the workpiece cannot be made by the worker's body. Only a small up and down stroke travel distance is achieved by the high power press drive. Therefore, most of the lifting stroke of the upper press is made by the low power lifting driver, and the very small stroke for material processing is made by the high power press driver, thereby minimizing the power consumption.

In addition, according to the present invention, the pusher is moved up and down by the eccentric distance of the lifting operation cam while the press motor of the press driving unit rotates once. The larger the rotational angle of the press motor, the smaller the lifting distance of the pusher increases the pressing force of the pusher, the smaller the rotational angle of the press motor, the larger the lifting angle of the pusher, the lower the pressing force of the pusher. In the present invention, the pusher is lifted only a minimum distance to pressurize the material while the press motor is rotated by a relatively large angle to 360 °. Therefore, the pressing force of the material is maximized.

The pusher release part of the present invention releases the end of the pusher from the upper end of the striking part so that the upper press is raised when the lifting motor of the lifting drive part is reversed after the material is processed by the press driving part. Therefore, when the lifting motor of the lifting driving unit is reversely rotated, the pusher release part is operated by the rotational power of the lifting motor to separate the pusher and the striking part, and the upper press is raised thereafter. Therefore, only the reverse driving of the lifting motor is performed to release the pusher and the hitting part and the lifting operation of the upper press sequentially, so that two operations are sequentially performed with one power source, thereby reducing the number of parts and improving the efficiency of the work. .

The present invention is provided with a self-falling fall prevention unit that is fastened to the upper press when the external power is cut off or the power of the rising motor is blocked to prevent the upper press from falling by its own weight. Therefore, when power is applied to the press apparatus of the present invention, the switching rod of the electromagnet switch of the self-falling prevention part is pulled in so that the ratchet and the ratchet gear are separated. The gear is engaged. Therefore, when the power supply to the press device is cut off, the upper drive tries to fall by its own weight because the rising drive part does not function, but at this time, the ratchet and the ratchet gear of the self-falling prevention part are engaged with each other, thereby preventing the free fall of the upper press. This prevents safety accidents.

The elevating operation cam and the pusher of the present invention further includes an up and down stroke adjustment unit to adjust the lifting stroke of the pusher by moving the upper end of the pusher toward the front or rear side of the frame. Therefore, when the stroke adjustment screw of the up and down stroke control unit is rotated, the moving block is moved back and forth within the lifting operation cam, and accordingly, the pusher shaft is moved together with the moving block, so that the eccentric distance between the worm wheel shaft and the pusher shaft is changed, and accordingly, the pusher Lifting stroke is different. Therefore, the lifting stroke of the pusher is changed by only a relatively simple operation of rotating the stroke adjusting screw of the up and down stroke adjusting part clockwise or counterclockwise, so that the adjustment of the lifting stroke of the pusher is very simple.

1 is a schematic perspective view showing a press device with improved safety and stroke height and improved power saving according to the present invention;

Figure 2 is a partially separated perspective view of the main portion of Figure 1

3 is a schematic front view of FIG. 1

4 is a schematic rear view of FIG. 1;

5 is a schematic plan view of FIG.

Figure 6 is a schematic perspective view of the excitation drive unit, lifting drive unit, pusher release portion

Figure 7 is a schematic excerpt perspective view showing a state in which the upper press, the rising drive unit, the lifting drive unit, the press driving unit, the pusher release unit is installed

Figure 8 is an excerpt perspective view showing the press driving portion and the up and down stroke control unit

9 is an exploded perspective view of FIG. 9;

10 is a schematic partial cross-sectional view showing the press driving portion and the up and down stroke adjustment portion.

Figure 11 is a schematic partial excerpt showing the operating state of the pusher release portion

12 is a partial rear view showing the weight drop prevention portion

Figure 13 is a schematic partial side cross-sectional view showing the operating state of the self-weight fall prevention portion

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

1 is a schematic perspective view showing a press device with improved safety and stroke height and improved power saving according to the present invention, FIG. 2 is a partially separated perspective view illustrating an essential part of FIG. 1, and FIG. 3 is a schematic front view of FIG. 1. . FIG. 4 is a schematic rear view of FIG. 1, FIG. 5 is a schematic plan view of FIG. 1, and FIG. 6 is a schematic perspective view of the lift drive unit, the lift drive unit, and the pusher release unit. FIG. 7 is a schematic excerpt perspective view showing a state in which an upper press, an elevating drive unit, an elevating drive unit, a press driving unit, and a pusher release unit are installed, and FIG. 8 is an excerpt perspective view showing a press driving unit and an up and down stroke control unit, and FIG. 9 is an exploded perspective view of FIG. 9. to be. FIG. 10 is a schematic partial cross-sectional view showing a press driving part and an up and down stroke adjusting part, FIG. 11 is a schematic partial excerpt view showing an operating state of the pusher releasing part, FIG. 12 is a partial rear view showing a weight drop prevention part, and FIG. Schematic partial sectional side view showing the operation state of the drop prevention part.

The press device with improved power saving and stability of the present invention, the frame 10, the upper press 30, the lift drive unit 40, the lift drive unit 50, the press drive unit 60, the pusher release unit 80, Self-falling prevention unit 90, up and down stroke adjustment unit 100 is made.

The frame 10 is provided with a front plate 11 and a back plate 12, the front plate 11, the top detection sensor 13 and the bottom detection sensor to detect the rising position and the falling position of the upper press 30. (14) is provided. The lower die 20 is installed below the frame 10 so as to face the upper press.

The upper press 30 is installed to be elevated on the frame 10 and processes the material seated on the lower die 20. The upper press 30 is provided with a first rack 31 and a second rack (32). The first rack 31 is connected to the lifting drive unit 50, which will be described later, and the second rack 32 is connected to the rising drive unit 40.

In addition, the upper press 30 is provided with a lifting sensor 57, when the lifting sensor 57 is raised to face the upper detection sensor 13, and detects the rising position of the upper press 30, the lifting sensor ( When 57) is lowered and opposed to the lower detection sensor 14, the lowering position of the upper press 30 is sensed.

The upper press 30 is provided with a striking portion 33. An upper end step 34 is formed at an upper end of the striking part 33, and the lower end of the pusher 77 to be described later when the upper press 30 descends is supported by the upper step step 34.

The upward driving part 40 is installed in the frame 10 and connected to the upper press 30 to move the upper press 30 upward when power is applied to maintain the initial state.

The lift drive unit 40 includes a lift motor 41 installed on the frame 10, a lift drive gear 43 coupled to the lift motor shaft 42 of the lift motor 41, and a lift drive gear 43. ), The first and second electric gears 46 connected to the first and second electric gears 44 connected to the first and second electric gears 44 by the electric motor shaft 45 and engaged with the second rack 32; )

The lift driving unit 50 is attached to the frame 10 and connected to the upper press 30 to raise and lower the upper press 30 within the lifting stroke distance.

The lifting driving unit 50 includes a lifting motor 51 installed on the frame 10, a lifting driving gear 53 provided on the lifting motor shaft 52 of the lifting motor 51, and a lifting driving gear 53. And the elevating first electric gear 54 engaged with the elbow), the elevating power shaft 55 coupled to the elevating first electric gear 54, and the elevating second electric gear 56 coupled to idle with the elevating electric shaft. Installed in the upper press 30 is made up and down the lifting sensor (57).

The press driving unit 60 is installed on the frame 10 and the upper press 30 is completed by the lifting and lowering drive unit 50 to complete the lowering of the pusher 77 on the upper end of the striking unit 33 of the upper press 30. When supported, the pusher 77 is pushed downward to process the material.

The press driving unit 60 is installed on the frame 10, the press motor 61 mounted on the frame 10, the drive pulley 63 coupled to the press motor shaft 62 of the press motor 61, and the frame 10. And the first worm shaft 65 and the second worm shaft 68 which transmit the power of the press motor 61 to the pusher 77 and the first worm shaft 65, and the rotational power of the press motor 61 is transmitted. The first electric belt 64 which transmits the rotational power of the first electric pulley 66 and the press motor 61 connected to the driving pulley 63 and the first electric pulley 66 to the first worm shaft 65. ), The second electric pulley 67 and the third electric pulley 69 coupled to the first worm shaft 65 and the second worm shaft 68, the second electric pulley 67 and the third electric pulley ( 69 is coupled to the second transmission belt 70 for transmitting the rotational power of the press motor 61 transmitted to the first worm shaft 65 to the second worm shaft 68, the first worm shaft 65 and the second The first worm 71 and the second worm 72 coupled to the worm shaft 68, respectively, and are installed on the frame 10 and connected to the pusher 77 Then, the worm wheel shaft 75 which transmits the power of the press motor 61 to the pusher 77 and the worm wheel shaft 75 are installed on the worm wheel shaft 75 and engaged with the first worm 71 and the second worm 72, respectively. The first worm wheel 73 and the second worm wheel 74 for transmitting the power transmitted to the worm 71 and the second worm 72 to the worm wheel shaft 75 and the worm wheel shaft coupled to the worm wheel shaft 75 ( 75, and a pusher 77 which is connected to the lifting operation cam 76 to be rotated together with the lifting operation cam 76 to move up and down when the lifting operation cam 76 is rotated.

A stroke adjustment screw 102 is formed inside the lifting operation cam 76, and a movement block 101 to be described later is built in the stroke adjustment screw 102. The moving block 101 is conveyed back and forth within the stroke adjustment screw 102 at the time of rotation of the stroke adjustment screw 102.

The pusher 77 is connected to the moving block 101 by the pusher shaft 78, and the pusher shaft 78 and the pusher 77 are transferred together when the moving block 101 is transferred.

On the other hand, the spring 79 is connected to the upper end of the pusher 77 and the back plate 12 of the frame 10, so that the lower end of the pusher 77 is elastically supported toward the front plate 11 side of the frame 10. It is.

When the pusher release unit 80 is installed in the frame 10 and the material is processed by the press driving unit 60, the pusher 77 is pushed to release the upper press 30 so that the pusher 77 is lifted from the striking unit 33. The pusher release unit 80 includes a release cam 81, a rolling piece 83, and an interlocking pin 82.

The release cam 81 is coupled to the elevating drive shaft 55 of the elevating drive unit 50 so that the elevating motor 51 of the elevating drive unit 50 is rotated together with the elevating drive shaft 55 and pusher 77. To the rear side of the frame 10 so that the end of the pusher 77 is separated from the top of the striking portion 33.

The rolling piece 83 is integrally formed with the elevating second electric gear 56 of the elevating drive unit 50 engaged with the first rack 31 of the upper press 30 and rotates together with the elevating second electric gear 56. And the arc-shaped non-motorized groove 84 is formed on the periphery.

The interlocking pin 82 protrudes on one side of the release cam 81, rotates together with the release cam 81, and is positioned in the non-motorized groove 84 of the rolling element 83.

The pusher release portion 80 strikes the lower end of the pusher 77 by rotating only the release cam 81 and the interlocking pin 82 during the rotation of the elevating power shaft 55 within the range of the non-powered groove 84. When the lifting power shaft 55 is rotated so that the interlocking pin 82 is supported on one side of the non-powered groove 84 and continues to rotate, the rotational power of the interlocking pin 82 is transmitted. It is transmitted to the piece 83 to rotate the rolling piece 83 and the elevating second electric gear 56.

The self-falling fall prevention unit 90 is installed on the frame 10 and fastened to the upper press 30 when the external power is cut off or the power of the lift motor 41 is cut off, so that the upper press 30 is caused by its own weight. Prevent it from falling. The weight drop prevention unit 90 is composed of a ratchet gear 91, a ratchet 92, and an electromagnet switch 94.

The ratchet gear 91 is fixed to the upper press 30 and raised and lowered together with the upper press 30. The ratchet 92 is provided with a hinge shaft 93 on the frame 10 so as to be engaged and separated from the ratchet gear 91.

The electromagnet switch 94 is installed in the frame 10 and connected to the ratchet 92 so that when the power is applied to the lift motor 41 of the lift drive 40, the switching rod 95 is pulled and the ratchet 92 is pulled out. When the power is cut off from the ratchet gear 91 and the power supply to the lift motor 41 is cut off, the ratchet 92 is engaged with the ratchet gear 91 while the switching rod 95 is drawn out.

The vertical stroke adjustment unit 100 is connected to the lifting operation cam 76 and the pusher 77, and moves the upper end of the pusher 77 to the front or rear side of the frame 10 to move the lifting stroke of the pusher 77. Adjust The up and down stroke adjustment unit 100 is composed of a moving block 101, the stroke adjustment screw (102).

The moving block 101 is provided in the inner space 79 inside the lifting operation cam 76 and is provided to be moved forward and backward along the inner space 79 and the upper end of the pusher 77 is connected. The stroke adjusting screw 102 is fastened to the lifting operation cam 76 and the moving block 101 to adjust the position of the pusher 77 by allowing the moving block 101 to move in the inner space 79.

The safety and the stroke height of the present invention of such a configuration is easy to adjust the power saving device is operated as follows.

First, when the power switch (not shown) is turned on, the rising motor 41 of the rising driver 40 is driven. When the lift motor 41 is driven, the lift motor shaft 42 and the lift drive gear 43 are rotated, so that the lift first electric gear 44, lift motor 45 and the lift second gear 46 are rotated. ) Is driven. Therefore, the upper press 30 is raised while the second rack 32 engaged with the rising second electric gear 46 is interlocked. At this time, when the lifting sensor 57 fixed to the upper press 30 is opposed to the upper detection sensor 13, the lifting is stopped.

As such, when the upper press 30 is moved upward and placed in the initial state, the material to be processed is placed on the lower die 20, and the lifting drive unit 50 is turned on (not shown). When the elevating motor 51 of the elevating drive unit 50 rotates forward, the elevating motor shaft 52, the elevating drive gear 53 are rotated, and the elevating first electric gear 54, the elevating electric shaft 55, and the release cam ( 81), the rolling piece 83 and the elevating second electric gear 56 are interlocked. When the elevating second electric gear 56 is rotated, the upper press 30 is lowered while the first rack 31 engaged with the first gear 31 is interlocked. At this time, when the lifting sensor 57 fixed to the upper press 30 faces the lower sensing sensor 14, the lifting motor 51 of the lifting driving unit 50 is stopped and the lowering of the upper press 30 is stopped.

When the upper press 30 is lowered as described above, the lower end of the pusher 77 is supported by the upper end 34 of the upper end of the striking part 33 of the upper press 30. The pusher 77 is a state in which the lower end thereof is elastically supported by the spring 79 toward the front plate 11 side of the frame 10. Therefore, when the upper press 30 is lowered, the lower end of the pusher 77 is elastically supported by the upper step 34 of the striking part 33. The pusher 77 is no longer rotated to the front side in the state of being caught by the upper step 34 due to the upper step 34 of the hitting part 33, but is pushed to the rear side.

When the lowering of the upper press 30 is completed, the press motor 61 of the press driver 60 is operated. When the press motor 61 is operated, the press motor shaft 62 and the driving pulley 63 are rotated, so that the first electric belt 64, the first electric pulley 66, the second electric pulley 67, The first worm shaft 65 is interlocked. When the second electric pulley 67 is driven, the second electric belt 70, the third electric pulley 69, the second worm shaft 68 is interlocked.

When the first worm shaft 65 and the second worm shaft 68 is rotated, the first worm 71, the second worm 72, the first worm wheel 73, the second worm wheel 74, the worm wheel shaft 75 This is interlocked. When the worm wheel shaft 75 is rotated, the lifting operation cam 76 is rotated, and the pusher 77 connected to the lifting operation cam 76 is lowered and raised. When the lifting operation cam 76 is rotated once, the pusher 77 is lowered and raised. When the pusher 77 is lowered, the upper press 30 is lowered and pressurized and processed.

When the pusher 77 is lowered and raised to finish the introduction work, the press driving unit 60 is stopped and the lifting motor 51 of the lifting driving unit 50 is reversely rotated. When the elevating motor 51 is reversely rotated, the elevating motor shaft 52, the elevating drive gear 53 are rotated, and the elevating first electric gear 54, the elevating electric shaft 55, and the release cam 81 are interlocked.

When the release cam 81 is rotated, the interlocking pin 82 fixed to the release cam 81 is rotated simultaneously with the release cam. The interlocking pin 82 is located in the non-motorized groove 84 of the rolling piece 83. Therefore, even if the interlocking pin 82 is rotated, the rolling piece 83 is not rotated within the range of the non-motorized groove 84, and only the release cam 81 and the interlocking pin 82 are rotated. Accordingly, the release cam 81 pushes the pusher 77 to the rear side while the interlocking pin 82 is moved in the space of the non-motorized groove 84 so as to push the lower end of the pusher 77 to the upper step 34 of the striking portion 33. ).

If the elevating power shaft 55 continues to rotate even after the pusher 77 is spaced apart from the hitting portion 33, that is, the interlocking pin 82 is supported on one side of the non-powered groove 84 and continues to rotate. The rotational power of) is transmitted to the rolling piece 83 to rotate the rolling piece 83 and the elevating second electric gear 56 fixed thereto. When the elevating second electric gear 56 is rotated, the first rack 31 engaged with the elevating second electric gear 56 is raised, thereby raising the upper press 30.

When the upper press 30 is raised and the lifting sensor 57 reaches the upper sensing sensor 13, the rising of the upper press 30 is stopped.

As described above, the safety and the stroke height of the present invention can be easily adjusted and the press device having improved power saving has the following advantages.

First, the present invention is installed on the frame 10 and connected to the upper press 30 when the power is applied to the upper drive 30 to move upward to maintain the initial state by moving the upper press 30, and the frame 10 And a lift drive unit 50 installed at the frame 10 and connected to the upper press 30 to lift the upper press 30 within a lift stroke, and the upper press 30 is installed at the frame 10. When the lowering is completed by the lower end of the pusher 77 is supported on the upper end of the hitting portion of the upper press 30 is provided with a press driving unit 60 for pressing the pusher 77 downward to process the material.

Therefore, the vertical stroke transfer, which has a relatively large stroke length, from the initial position at which the upper press 30 is raised to the descending position immediately before the workpiece processing is performed by the low-power lifting driver 50, and the small vertical stroke transfer for the workpiece machining is performed. It is made by the high power press drive unit 60.

Therefore, most of the lifting stroke of the upper press 30 is made by the low-power lifting driver 50, and very small stroke for the material processing is made by the high-power press driving unit 60, thereby minimizing power consumption.

Second, in the present invention, the pusher 77 is elevated by the eccentric distance of the lifting operation cam 76 while the press motor 61 of the press driving unit 60 is rotated once. As the rotation angle of the press motor 61 increases and the lifting distance of the pusher 77 decreases, the pressing force of the pusher 77 increases, and as the rotation angle of the press motor 61 decreases, As the lifting distance increases, the pressing force of the pusher 77 decreases.

In the present invention, the pusher 77 is lifted only a minimum distance to pressurize the material while the press motor 61 is rotated by a relatively large angle of 360 °. Therefore, the pressing force of the material is maximized.

Third, the pusher release portion 80 of the present invention is a pusher so that the upper press 30 is raised when the lifting motor 51 of the elevating drive unit 50 is reversed after the material is processed by the press driving unit 60 ( The end of 77 is released from the upper step 34 of the striking portion 33.

Therefore, when the lifting motor 51 of the lifting driving unit 50 rotates in reverse, the pusher releasing unit 80 is operated by the rotational power of the lifting motor 51 to separate the pusher 77 and the striking unit 33, After that, the upper press 30 is raised.

Therefore, the lifting operation of the pusher and the hitting part 33 and the lifting operation of the upper press 30 are sequentially performed only by the reverse rotation driving of the lifting motor 51, so that two operations are sequentially performed with one power source. The number of parts is reduced and work efficiency is improved.

Fourth, the present invention is coupled to the upper press 30 when the external power is cut off or the power of the lift motor 41 is blocked by the weight drop prevention portion 90 to prevent the upper press 30 fall by its own weight ) Is provided.

Therefore, when power is applied to the press apparatus of the present invention, since the switching rod 95 of the electromagnet switch 94 of the weight drop prevention unit 90 is introduced, the ratchet 92 and the ratchet gear 91 are separated and the lift motor When the power supply to the 41 is cut off, the ratchet 92 and the ratchet gear 91 engage with each other while the switching rod 95 of the electromagnet switch 94 is drawn out.

Therefore, when the power supply to the press device is cut off, the upper driving part 30 does not perform its function, so the upper press 30 tries to drop by its own weight, but at this time, the ratchet 92 and the ratchet gear of the weight drop prevention part 90. Since the 91 is engaged with each other to prevent the free fall of the upper press 30, thereby preventing a safety accident.

Fifth, the elevating operation cam 76 and the pusher 77 of the present invention, the upper and lower stroke adjustment to adjust the lifting stroke of the pusher 77 by moving the upper end of the pusher 77 to the front or rear side of the frame 10 The part 100 is further provided.

Therefore, when the stroke adjusting screw 102 of the up and down stroke control unit 100 is rotated, the moving block 101 is moved back and forth within the lifting operation cam 76, and the pusher shaft 78 is moved with the moving block 101. Since it is conveyed together, the eccentric distance between the worm wheel shaft 75 and the pusher shaft 78 is changed, and thus the lifting stroke of the pusher 77 is changed.

Therefore, the lifting stroke of the pusher 77 is changed by only a relatively simple operation of rotating the stroke adjusting screw 102 of the up and down stroke adjusting part 100 in a clockwise or counterclockwise direction so that the adjustment of the lifting stroke of the pusher 77 is very easy. Do.

On the other hand, on the surfaces of the top sensor 13, the bottom sensor 14, the elevating sensor 57, a coating layer containing a silicon component is formed to solve the surface contamination problem that causes the back of the sensor and shorten the life of the sensor Can be.

The coating layer can be prevented from coming back by inhibiting the adhesion of microorganisms and suspended solids and the like, it is possible to extend the period of use of the upper sensor 13, lower sensor 14, the lifting sensor 57 semi-permanently.

To briefly describe the method of preparing the coating solution, first, a dimethyldichlorosilane solution is dissolved in a volume ratio of 2-5% in an ethyl acetate solution to prepare a coating solution. In this case, if the content of the dimethyldichlorosilane solution is less than 2%, the effect of the coating may not be sufficiently obtained. If the content of the dimethyldichlorosilane solution exceeds 5%, the coating layer may be too thick and the efficiency may be reduced. The coating solution dissolved in the above ratio is preferably in the range of 0.8-2cp (centifase) in consideration of the coating time and the coating thickness. This is because if the viscosity is too low, the application time should be long, and if the viscosity is too high, the application may occur thick and not dry, and also may cause the backing of the sensor due to uneven application.

In the present invention, the surface of the top sensor 13, the bottom sensor 14, the lifting sensor 57 is applied to the coating solution prepared as described above with a thickness of 1㎛ or less. At this time, when the thickness of the coating layer exceeds 1 μm, the sensitivity of the sensor is rather lowered. Therefore, in the present invention, the thickness of the coating layer is limited to 1 μm or less. In addition, as a method of applying the thickness as described above, the spray method of spraying about 2-3 times the surface of the top sensor 13, the bottom sensor 14, the lifting sensor 57 may be used.

In addition, the non-electric groove 84 of the rolling element 83 may be formed with a coating layer coated with a composition for preventing contamination, so as to effectively prevent the attachment and removal of contaminants.

The antifouling coating composition includes boric acid and sodium carbonate in a molar ratio of 1: 0.01 to 1: 2, and the total content of boric acid and sodium carbonate is 1 to 10% by weight based on the total aqueous solution. In addition, sodium carbonate or calcium carbonate may be used as a material for improving the applicability of the coating layer, but preferably sodium carbonate may be used. The boric acid and sodium carbonate is preferably 1: 0.01 to 1: 2 as the molar ratio. If the molar ratio is out of the above range, there is a problem in that the coating property of the substrate is lowered or the moisture absorption of the surface is increased after application, thereby removing the coating film.

The boric acid and sodium carbonate is preferably 1 to 10% by weight of the total composition aqueous solution, if less than 1% by weight has a problem that the coating property of the substrate is lowered, if it exceeds 10% by weight crystallization due to an increase in the thickness of the coating film Easy to occur

On the other hand, it is preferable to apply | coat by the spray method as a method of apply | coating this antifouling coating composition to the non-electric groove | channel 84 of the rolling piece 83. In addition, the final coating film thickness of the non-electric groove 84 of the rolling piece 83 is preferably 500 to 2000 kPa, more preferably 1000 to 2000 kPa. If the thickness of the coating film is less than 500 kPa, there is a problem of deterioration in the case of high temperature heat treatment, and if the thickness of the coating film exceeds 2000 kPa, crystal deposition of the coated surface is prone to occur.

In addition, the present antifouling coating composition may be prepared by adding 0.1 mol of boric acid and 0.05 mol of sodium carbonate to 1000 ml of distilled water, followed by stirring.

Then, the outer surface of the rising motor 41 and the lifting motor 51 may be coated with a discoloration portion that changes color depending on the temperature. The discoloration part may be formed by applying two or more thermochromic substances whose color changes when the temperature is higher than a predetermined temperature to the case surfaces of the rising motor 41 and the lifting motor 51 and separating them into two or more sections according to the temperature change. A temperature change can be determined, and a protective film layer is coated on the discolored portion to prevent the discolored portion from being damaged.

Here, the color change part may be formed by applying a temperature change material having a color change temperature of 40 ° C. or higher and 60 ° C. or higher, respectively. The color change part is for detecting the temperature change of the paint by changing the color according to the case temperature of the rising motor 41 and the lifting motor 51.

The color change part may be formed by applying a color change material that changes color when the temperature is higher than a predetermined temperature to the case surfaces of the rising motor 41 and the lifting motor 51. In addition, the thermochromic material is generally composed of a microcapsule structure of 1 ~ 10㎛, it can be colored and transparent due to the binding and separation phenomenon depending on the temperature of the electron donor and the electron acceptor in the microcapsules.

In addition, the temperature change material is a color change is quick, it may have a variety of color change temperature, such as 40 ℃, 60 ℃, 70 ℃, 80 ℃, such a color change temperature can be easily adjusted in various ways. Such thermochromic materials may be used in various kinds of thermochromic materials based on principles such as molecular rearrangement of organic compounds and rearrangement of atomic groups.

To this end, the discoloration unit is preferably formed to be separated into two or more sections in accordance with the temperature change by applying two or more thermochromic materials having different discoloration temperature. The temperature discoloration layer is preferably a temperature discoloration material having a relatively low temperature discoloration temperature and a temperature discoloration material having a relatively high temperature discoloration temperature, more preferably having a discoloration temperature of 40 ° C. or higher and 60 ° C. or higher. The color change part may be formed using a temperature change material.

Through this, the temperature change of the rising motor 41 and the lifting motor 51 can be checked step by step to detect the temperature change of the paint, and thus the rising motor 41 and the lifting motor 51 are optimally It can be operated in, the damage of the rising motor 41 and the lifting motor 51 by overheating can be prevented in advance.

In addition, the protective film layer is applied on the discoloration part to prevent the discoloration part from being damaged by an external impact, and easily check whether the discoloration part is discolored, and at the same time, considering the weakness of the temperature discoloring material in heat, It is preferable to use.

[Description of the code]

10 frame 11: front panel

12: rear plate 13: the top detection sensor

14: lower detection sensor 20: lower die

30: upper press 31: the first rack

32: second rack 33: hitting section

34: upper step 40: ascent drive

41: rising motor 42: rising motor shaft

43: ascending drive gear 44: ascending first gear

45: ascending drive shaft 46: ascending second electric gear

50: lifting drive unit 51: lifting motor

52: lifting motor shaft 53: lifting drive gear

54: elevating gear 1 motor 55: elevating transmission shaft

56: elevating second electric gear 57: elevating sensor

60: press drive 61: press motor

62: press motor shaft 63: drive pulley

64: first transmission belt 65: first worm shaft

66: first electric pulley 67: second electric pulley

68: second worm shaft 69: third electric pulley

70: second transmission belt 71: first worm

72: second worm 73: first worm wheel

74: second worm wheel 75: worm wheel shaft

76: lifting operation cam 77: pusher

78: pusher shaft 79: spring

80: pusher release unit 81: release cam

82: ratchet 83: rolling piece

84: non-motorized groove 90: weight drop prevention unit

91: Ratchet Gear 92: Ratchet

93: hinge shaft 94: electromagnet switch

95: switching rod 100: upper and lower stroke control unit

101: moving block 102: stroke adjustment screw

Claims

In the press apparatus provided with the frame 10, the lower die 20 is installed on the frame 10, the material to be processed is seated, and the upper press 30 is installed to be elevated on the frame 10 and processes the material. In

A lift drive unit 40 installed on the frame 10 and connected to the upper press 30 to move the upper press 30 upward when power is applied to maintain the initial state;

An elevating drive unit 50 installed on the frame 10 and connected to the upper press 30 to elevate the upper press 30 within an elevating stroke;

The pusher 77 is installed when the lower end of the pusher 77 is supported on the top of the striking part 33 of the upper press 30 because the upper press 30 is completed by the elevating driving part 50. Press driving unit 60 for processing the material by pressing downward;

A pusher release part 80 installed on the frame 10 and pushing the pusher 77 to release the upper press 30 so that the upper press 30 is raised when the material is processed by the press driving part 60;

Installed on the frame 10 and when the external power is cut off or the power of the lift motor 41 is locked to the upper press 30 to prevent the fall of the upper press 30 to fall by its own weight 90, the press is easy to adjust the safety and stroke height, characterized in that further provided with improved power saving.
The method of claim 1, the press drive unit 60,

A press motor 61,

A drive pulley 63 coupled to the press motor shaft 62 of the press motor 61;

A first worm shaft 65 and a second worm shaft 68 installed on the frame 10 and transmitting power of the press motor 61 to the pusher 77;

A first electric pulley 66 coupled to the first worm shaft 65 and to which rotational power of the press motor 61 is transmitted;

A first transmission belt 64 for transmitting rotational power of the press motor 61 connected to the driving pulley 63 and the first transmission pulley 66 to the first worm shaft 65;

A second electric pulley 67 and a third electric pulley 69 respectively coupled to the first worm shaft 65 and the second worm shaft 68;

The second transmission belt coupled to the second transmission pulley 67 and the third transmission pulley 69 transmits the rotational power of the press motor 61 transmitted to the first worm shaft 65 to the second worm shaft 68 ( 70),

A first worm 71 and a second worm 72 coupled to the first worm shaft 65 and the second worm shaft 68, respectively;

Worm wheel shaft 75 is installed on the frame 10 and connected to the pusher 77 to transmit the power of the press motor 61 to the pusher 77,

Installed in the worm wheel shaft 75 and engaged with the first worm 71 and the second worm 72, respectively, the power transmitted to the first worm 71 and the second worm 72 is transmitted to the worm wheel shaft 75. The first worm wheel 73 and the second worm wheel 74, and

A lifting and lowering operation cam 76 which rotates together with the worm wheel shaft 75 coupled to the worm wheel shaft 75;

It is connected to the elevating operation cam 76, the pusher 77 which is lifted during the rotation of the elevating operation cam (76), characterized in that the safety and stroke height adjustment is easy and the power saving improved press device.
The pusher release unit 80 of claim 1,

When the lifting motor 51 of the lifting driving unit 50 is coupled to the lifting driving shaft 55 of the lifting driving unit 50, the lifting driving unit 50 is rotated together with the lifting driving shaft 55, and the pusher 77 is rearward of the frame 10. A release cam 81 which is pushed to the side so that the end of the pusher 77 is separated from the upper end of the striking portion 33,

It is formed integrally with the elevating second electric gear 56 of the elevating drive unit 50 engaged with the first rack 31 of the upper press 30, and rotates together with the elevating second electric gear 56, and has an arc-shaped non-motor around. The rolling piece 83 in which the groove 84 is formed,

Protrudes on one side of the release cam 81 to rotate together with the release cam 81 and consists of an interlocking pin 82 positioned in the non-motorized groove 84 of the rolling element 83;

Within the forming range of the non-powered groove 84, only the release cam 81 and the interlocking pin 82 are rotated during the rotation of the elevating power shaft 55 so that the lower end of the pusher 77 is separated from the upper end of the striking part 33. and,

When the elevating power shaft 55 is rotated so that the interlocking pin 82 is supported on one side of the non-powered groove 84 and continues to rotate, the rotational force of the interlocking pin 82 is transmitted to the rolling piece 83 to transmit the rolling piece 83. And the second electric gear 56 to rotate the safety and stroke height adjustment, characterized in that it is provided to rotate the electric power saving is improved.
The method of claim 1, wherein the weight fall prevention unit 90,

A ratchet gear 91 fixed to the upper press 30 and being elevated together with the upper press 30;

A ratchet 92 installed on the frame 10 to be engaged and separated from the ratchet gear 91;

Installed in the frame 10 and connected to the ratchet 92 so that when the power is applied to the lift motor 41 of the lift drive 40, the ratchet 92 is separated from the ratchet gear 91, and the lift motor 41 is connected to the lift motor 41. When the power is cut off, the ratchet 92 is made of an electromagnet switch 94 to be engaged with the ratchet gear 91.
The method according to claim 2,

The lifting operation cam (76) and the pusher (77)

Up and down stroke adjustment unit 100 is further provided to move the upper end of the pusher 77 to the front or rear side of the frame 10 to adjust the lifting stroke of the pusher 77,

Up and down stroke adjustment unit 100,

A moving block 101 embedded in the inner space 79 of the elevating operation cam 76 and provided to be moved forward and backward along the inner space 79 and connected to an upper end of the pusher 77;

It is fastened to the elevating operation cam 76 and the moving block 101 to move the moving block 101 in the interior space (79) is characterized by consisting of a stroke adjusting screw 102 for adjusting the position of the pusher 77. It is a press device with improved safety and easy stroke adjustment and power saving.