KR102637916B1 - Notching mold enabling forcibly ejecting of scrap - Google Patents

Abstract

The disclosed notching mold capable of forcibly ejecting scrap includes a die holder, a die plate, and a die, and includes a lower mold into which the electrode plate to be punched is continuously and intermittently transferred; An upper die that includes a punch holder, a punch plate, and a punch, and punches out the electrode plate together with the lower die while moving up and down toward the lower die. And a scrap forced ejecting means installed between the lower mold and the upper mold, and interlocking with the lifting operation of the upper mold to force scrap to be ejected from the scrap discharge port of the lower mold. The scrap forced ejecting means strikes the scrap when the electrode plate is punched, Take-out fingers to force the struck scrap to be taken out toward the scrap discharge port; A finger operating member that operates the take-out finger so that the scrap is forcibly ejected when the electrode plate is punched and has an elastic spring that elastically returns the take-out finger when the upper die is raised after the electrode plate is punched; and a take-out finger operation detection unit that detects whether the take-out finger is malfunctioning.

Description

Notching mold capable of forcibly ejecting scrap {NOTCHING MOLD ENABLING FORCIBLY EJECTING OF SCRAP}

The present invention (Disclosure) relates to a notching mold capable of forcibly ejecting scrap.

Here, background information related to the present invention is provided, and this does not necessarily mean prior art (This section provides background information related to the present disclosure which is not necessarily prior art).

Generally, secondary batteries are manufactured through an electrode process, assembly process, formation process, etc.

And, in the subsequent assembly process, electrode tabs are formed on the uncoated area (part not coated with electrode active material) of the positive or negative electrode plate (hereinafter referred to as 'electrode plate') manufactured in the electrode process.

In the above-described assembly process, equipment for forming and processing electrode tabs on the uncoated area includes press notching equipment (hereinafter referred to as 'notching mold') and laser notching equipment.

As everyone knows, a notching mold moves a punch toward the die to punch out the uncoated portion of the electrode plate and mold the electrode tab, and scrap is generated in this process.

However, the conventional notching mold had the problem of scrap being adsorbed to the punch by vacuum or being pushed up (backflow) by the compressed air in the pocket during the electrode tab forming process. Another problem was that the punch and die were damaged due to the rising scrap. There was a problem.

Korean Registered Utility Model Publication No. 20-0136027. Korean Patent Publication No. 10-0131265. Korean Patent Publication No. 10-2022-0043716. Korean Patent Publication No. 10-1622210.

The purpose of the present invention (Disclosure) is to provide a notching mold capable of forcibly ejecting scrap, which allows scrap to be forcibly ejected toward the scrap discharge port when punching an electrode plate.

The purpose of the present invention (Disclosure) is to provide a notching mold capable of forcibly ejecting scrap, which allows controlling the ejection depth of the forcibly ejected scrap.

The purpose of the present invention (Disclosure) is to provide a notching mold capable of forcibly ejecting scrap, which allows checking whether a malfunction of the ejecting finger for forcibly ejecting scrap is detected.

In addition, the problem to be solved by the present invention is not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. It could be.

Here, a general summary of the present invention is provided, and this should not be construed as limiting the scope of the present invention (This section provides a general summary of the disclosure and is not a comprehensive disclosure of its full scope or all of its features).

In order to solve the above problem, a notching mold capable of forcibly ejecting scrap according to one aspect among several aspects describing the present invention includes a die holder, a die plate, and a die, and the electrode plate to be punched is A lower type that is continuously and intermittently transferred; An upper die that includes a punch holder, a punch plate, and a punch, and punches out the electrode plate together with the lower die while moving up and down toward the lower die. And a scrap forced ejecting means installed between the lower mold and the upper mold, and interlocking with the lifting operation of the upper mold to forcibly eject the scrap toward the scrap discharge port of the lower mold. The scrap forced ejecting means strikes the scrap when the electrode plate is punched, An ejection finger that forces the struck scrap to be ejected toward the scrap discharge port; A finger operating member that operates the take-out finger so that the scrap is forcibly ejected when the electrode plate is punched and has an elastic spring that elastically returns the take-out finger when the upper die is raised after the electrode plate is punched; and a take-out finger operation detection unit that detects whether the take-out finger is malfunctioning.

In a notching mold capable of forcibly extracting scrap according to an aspect of the present invention, the take-out finger is provided in the shape of a bar extending horizontally, and the take-out finger faces one side of the punch where the lateral force acts when punching the plate. It is disposed on the other side of the punch, and the rear end of the take-out finger is rotatably connected in the vertical direction to a finger bracket extending vertically from the punch holder to the die holder side, and the take-out finger has a striking portion that extends toward the punch side based on the finger bracket. It may include a knob portion extending in a direction opposite to the punch.

In a notching mold capable of forcibly extracting scrap according to an aspect of the present invention, the extended end side of the striking portion is accommodated inside the punch so as not to interfere with the electrode plate punching, and is elastically pulled out through the lower surface of the punch at the same time as the electrode plate is punched. This can hit the scrap and force it to be taken out toward the scrap outlet.

In a notching mold capable of forcibly extracting scrap according to an aspect of the present invention, an entry/exit groove is formed in the punch to allow the extended end side of the hitting portion to be received and withdrawn, and the entry/exit groove is from the lower surface of the punch to the upper surface of the punch. It may be formed concavely on the side and open on the other side of the punch.

In a notching mold capable of forcibly ejecting scrap according to an aspect of the present invention, the ejection finger includes an air conduit that guides ejection air; And an air discharge hole for discharging the blowing air guided along the air pipe; wherein the air pipe is formed inside the blowing finger along the length of the blowing finger from the extended end of the knob to the extended end of the striking part, One or more air discharge holes are formed on the lower side of the striking portion adjacent to the extended end of the striking portion, and the inflow end of the air pipe exposed by the extended end of the knob portion may be connected to an air supply source.

In a notching mold capable of forcibly extracting scrap according to an aspect of the present invention, the operating section is installed on the upper surface of the die holder facing the lower side of the knob portion so as not to interfere with the die plate, and the upper surface of the operating section is provided with an electrode plate. When punching, the lower side of the knob portion of the take-out finger, which descends along the upper mold, is contacted, and the operation interval may be formed to have a height such that the tip side of the striking portion is drawn out to the outside of the lower surface of the punch when in contact with the knob portion.

In the notching mold capable of forcibly ejecting scrap according to an aspect of the present invention, the position of the knob portion is installed to be variable along the longitudinal direction of the knob portion via a position adjustment bolt so as to adjust the depth at which the scrap is forcibly ejected during operation. , the position adjustment bolt is rotatably supported without being removed from a fixed block installed at the end of the die holder so as to face the operation rod, and the position adjustment hole into which the male thread of the position adjustment bolt is fastened is formed to penetrate along the longitudinal direction of the knob portion during the operation operation. It can be.

In the notching mold capable of forcibly extracting scrap according to an aspect of the present invention, the elastic spring is provided as a vertically extending compression coil spring, and one end of the elastic spring faces the upper side of the knob portion so as not to interfere with the punch plate. It is supported on the side of the punch holder, and the other end of the elastic spring may be in contact with the upper side of the knob part so that the tip side of the striking part is accommodated inside the punch.

In a notching mold capable of forcibly extracting scrap according to an aspect of the present invention, the elastic spring is disposed inside a spring housing extending vertically from the punch holder to the knob portion, and the lower surface of the spring housing is on the other end of the elastic spring. A contact cap that slides through and contacts the upper side of the knob may be mounted.

In a notching mold capable of forced scrap extraction according to an aspect of the present invention, the extraction finger operation detection unit is provided in the shape of a vertically extending plate, and the upper side is a knob so that the lower side extends outside the end of the die holder. A malfunction detection dog fixedly installed on the extension end of the unit; And a malfunction detection sensor fixedly installed on the end side of the die holder or the end side of the table on which the die holder is fixedly installed so as to face the bottom side of the malfunction detection dog, wherein the malfunction detection sensor is located at the bottom of the malfunction detection dog when the plate is punched. If the cycle of side separation, detection, separation, detection, separation is repeated, the ejection finger can be judged to be operating normally.

In a notching mold capable of forcibly ejecting scrap according to an aspect of the present invention, a collision prevention groove is provided on the upper surface of the die plate to prevent collision with the eject finger during the eject finger turning operation, from the end of the adjacent die plate during operation. It may be formed to connect to the pocket formed on the die plate.

According to the present invention, the ejection finger strikes the scrap and forces it to be ejected toward the scrap discharge port, and at the same time, the ejection finger discharges ejection air, providing the effect of preventing the scrap from rising (backflow). .

According to the present invention, since the turning angle of the take-out finger can be selectively adjusted, it is possible to provide the effect of adjusting the take-out depth of the scrap forcefully taken out toward the scrap discharge port according to the work environment.

According to the present invention, it is possible to check whether the take-out finger is malfunctioning, thereby providing the effect of increasing the safety and reliability of the notching mold according to the present invention.

Figure 1 is a diagram schematically showing a notching mold capable of forcibly extracting scrap according to the present invention, showing the upper mold in an elevated state.
Figure 2 is a diagram schematically showing a notching mold capable of forcibly extracting scrap according to the present invention, showing a state in which the upper die is lowered to the lower die to punch out the electrode plate.
Figure 3 is a diagram schematically showing the inside of the take-out finger shown in Figures 1 and 2.
Figure 4 is a diagram schematically showing the connection relationship between the operation and position fixing bolts shown in Figures 1 and 2.

Hereinafter, an embodiment implementing a notching mold capable of forcibly extracting scrap according to the present invention will be described in detail with reference to the drawings.

However, the essential technical idea of the present invention cannot be said to be limited to the embodiments described below, and based on the essential technical idea of the present invention, it cannot be said that the possible embodiments are limited by the embodiments described below. It is disclosed that the embodiment described in covers the scope that can be easily proposed by way of replacement or change.

In addition, the terms used below are selected for convenience of explanation, so in understanding the essential technical idea of the present invention, they are not limited to dictionary meanings and are appropriately interpreted as meanings that correspond to the technical idea of the present invention. It should be.

1 and 4 are diagrams schematically showing a notching mold capable of forcibly taking out scrap according to the present invention. The notching mold capable of forcibly taking out scrap according to the present invention includes a lower mold 10, an upper mold 30, and a forced scrap ejecting means. Includes (100).

The lower mold 10 is disposed on the lower side of the upper mold 30, and the electrode plate E to be punched is continuously and intermittently transferred to the lower mold 10.

The lower mold 10 includes a die holder 12, a die plate 16, and a die 22 as shown.

The die holder 12 is provided in a flat shape as shown, and a scrap discharge port 14 is formed in the die holder 12 through which the scrap S generated when punching the electrode plate E is discharged.

Also, although not shown, vertical guide posts (not shown) are installed in the die holder 12 for connection to the upper die 30.

The die plate 16 is provided in a flat shape like the die holder 12, and is fixedly installed on the upper surface of the die holder 12 using bolts or the like.

At this time, a die installation hole 18 in which the die 22 is installed is formed in the die plate 16 to be connected to the scrap discharge port 14.

In addition, a pocket 20 is formed between the die 22 installed in the die installation hole 18 and the die installation hole 18 through which the punch 36 of the upper mold 30 enters and exits when the electrode plate E is punched.

That is, when punching the electrode plate (E), the punch 36 of the upper mold 30 descends and punches (shears) the electrode plate (E) placed on the die 22 and simultaneously enters the inside of the pocket 20 and then enters the pocket 20. ) rises to the outside, and at this time, due to the action of the die 22 and the punch 36, the electrode plate (E) is punched into the desired shape, and the scrap (S) generated when punching the electrode plate (E) forms the pocket (20). Afterwards, it falls toward the scrap discharge port (14) and is discharged to the outside of the die holder (12).

The die 22 punches the electrode E into the desired shape together with the punch 36 of the upper mold 30. For this purpose, a die blade 24 having a shape that matches the shape of the electrode plate E to be punched is formed in the die 22.

This die 22 is installed in the die installation hole 18 as described above, and the die 22 is installed in the die installation hole 18 through a bolt or the like or is press-fitted into the die installation hole 18.

The upper mold 30 is disposed on the upper side of the lower mold 10. The upper mold 30 moves up and down toward the lower mold 10 and punches the electrode plate E into the desired shape together with the lower mold 10.

The upper mold 30 includes a punch holder 32, a punch plate 34, and a punch 36 as shown.

The punch holder 32 is provided in a flat shape like the die holder 12, and is spaced apart from the upper side of the die holder 12 so that its lower surface faces the upper surface of the die holder 12.

The punch holder 32 arranged in this way is installed to be able to be raised and lowered toward the lower mold 10 via a guide bush (not shown) that is fitted to be lifted up and down on the guide post.

The punch plate 34 is provided in a flat shape like the punch holder 32, and the punch plate 34 is fixedly installed on the lower surface of the punch holder 32 via bolts or the like.

The punch 36 punches the electrode plate E into the desired shape together with the die 22 of the lower mold 110.

For this purpose, the punch 36 is installed on the lower surface of the punch holder 32 through a bolt or the like penetrating the punch plate 34 or a bolt or the like penetrating the punch holder 32 and the punch plate 34. It is installed on the lower surface of the punch plate 34, and a punch blade 38 having a shape that matches the shape of the electrode plate E to be punched is formed in the punch 36.

And the punch 36 is formed to have a cross-section that matches the pocket 20 so that it can enter and exit the pocket 20.

The scrap forced ejection means 100 is linked with the lifting operation of the upper mold 30 to force the scrap S to be ejected in the scrap ejection direction, that is, toward the scrap discharge port 14 of the lower mold 10.

This scrap forced extraction means 100 is installed between the lower mold 10 and the upper mold 30, and the scrap forced extraction means 100 is located on one side of the punch 36 where the lateral force acts when punching the electrode plate (E). It is installed on the other side of the opposing punch 36.

The scrap forced extraction means 100 includes an extraction finger 110, an extraction finger operation unit 130, and an extraction finger operation detection unit 150.

First, the extraction finger 110 strikes the scrap S when the electrode plate E is punched (lowering the upper die) and forces the scrap S to be ejected toward the scrap discharge port 14.

The take-out finger 110 is provided in the shape of a bar extending approximately horizontally as shown, and the rear end of the take-out finger 110 is positioned in the punch holder 32 so as not to interfere with the lifting operation of the upper mold 30. It is connected to a finger bracket 112 that extends vertically toward the holder 12 so that it can pivot in the up and down direction.

The take-out finger 110 connected to the finger bracket 112 has a hitting portion 114 extending toward the punch 36 based on the finger bracket 112 and a knob portion extending in a direction opposite to the punch 36. Includes (116; knob).

Here, the connection relationship between the finger bracket 112 and the extraction finger 110 is not particularly limited in the present invention. In other words, as long as the rear end of the take-out finger 110 can be connected to the finger bracket 112 so that it can pivot in the vertical direction, the finger bracket 112 and the take-out finger 110 may have any connection relationship.

In addition, the extended end side of the hitting portion 114 of the extraction finger 110 is elastically accommodated inside the punch 36 so as not to interfere with the punching of the electrode plate (E), and the extended end side of the hitting portion 114 is aligned with the pole plate (E). At the same time as punching, the scrap (S) is elastically pulled out through the lower surface of the punch (36) and is struck toward the scrap discharge port (14) to force the scrap (S) to be taken out.

For this purpose, an entry/exit groove 118 is formed in the punch 36 to accommodate and withdraw the extended end side of the striking portion 114.

As shown, the entry/exit groove 118 is formed concavely from the lower surface of the punch 36 to the upper surface of the punch 36 so as not to interfere with the punch blade 38 and is formed to open to the other side of the punch 36. .

Meanwhile, the ejection finger 110 discharges ejection air so that the scrap S is forcibly ejected toward the scrap discharge port 14 when the scrap S is struck by the striking unit 114.

To this end, the blow-out finger 110 further includes an air pipe 120 that guides the blow-out air, and an air discharge hole 122 that discharges the blow-out air guided along the air pipe 120.

As shown, the air conduit 120 is formed inside the take-out finger 110 along the length of the take-out finger 110 from the extended end of the knob portion 116 to the extended end of the hitting portion 114, One or more air discharge holes 122 are formed on the lower side of the striking portion 114 adjacent to the extended end side of the striking portion 114.

At this time, the inflow end side of the air pipe 120 exposed by the extended end of the knob portion 116 is connected to an air source (not shown) installed on the outside of the notching mold according to the present invention through a typical feeding tube, etc. connected.

Here, the air source may be a conventional air compressor capable of supplying compressed blow-out air.

That is, when punching the electrode plate (E) by the lowering operation of the upper mold 30, the punch 36 punches the electrode plate (E) placed in the die 22 and at the same time enters the inside of the pocket 20, the take-out finger 110 The blowing air flows into the air pipe 120 side, and at the same time, the extended end side of the hitting portion 114 of the blowing finger 110 is connected to the finger bracket ( It rotates around 112) and is elastically withdrawn from the entry/exit groove 118. At this time, the extended end of the striking portion 114 strikes the scrap (S) generated when punching the electrode plate (E), so that the scrap (S) passes through the scrap outlet. It is forced to be blown toward the (14) side, and at the same time, the blowing air flowing into the air pipe 120 is discharged through the air discharge hole 122, so that the scrap (S) struck by the hitting portion 114 is toward the scrap discharge port 14. Forced ejection deeper.

And when the punch 36 is withdrawn from the pocket 20 by the upward operation of the upper mold 30, the inflow of air into the air pipe 120 of the take-out finger 110 is blocked, and at the same time, the knob of the take-out finger 110 is blocked. The extended end side of the striking part 114 of the take-out finger 110 rotates around the finger bracket 1120 by the take-out finger operating unit 130 that contacts the part 116 and is flexibly accommodated in the entry/exit groove 118. do.

The take-out finger operating unit 130 operates the take-out finger 110 in conjunction with the upper mold 30 that is lifted and lowered.

The take-out finger operation unit 130 includes an operation period 132 that operates the take-out finger 110 so that the scrap (S) is forcibly taken out toward the scrap discharge port 14 when the pole plate (E) is punched, and the upper mold after the pole plate (E) is punched. (30) It includes an elastic spring 140 that returns the ejection finger 110 when it rises.

As shown, the operation member 132 is installed on the upper surface of the die holder 12 facing the lower side of the knob portion 116 of the take-out finger 110 so as not to interfere with the die plate 16.

The upper surface of the operation stem 132 is contacted with the lower side of the knob part 116 of the take-out finger 110 that descends along the upper mold 30 when the electrode plate E is punched, and the operation stem 132 is connected to the knob part ( 116), the extended end side of the striking portion 114 of the take-out finger 110 is formed to have a height such that it is drawn outward from the lower surface of the punch 36 through the entry/exit groove 118.

That is, when the knob portion 116 contacts the upper surface of the operating stem 132 when punching the electrode plate (E), the extended end side of the striking portion 114 moves to the outside of the lower surface of the punch 36 through the entry/exit groove 118. It is pulled out and strikes the scrap (S), forcing the scrap (S) to be taken out toward the scrap discharge port (14).

Meanwhile, the operating stem 132 is installed so that its position is variable along the longitudinal direction of the knob portion 116 via the position adjustment bolt 134 so that the depth at which the scrap S is forcibly extracted can be adjusted.

As shown, the position adjustment bolt 134 is rotatably supported without being removed from the fixing block 136 installed at the end of the die holder 12 so as to face the operating stem 132.

In addition, a position adjustment hole 138 to which the male thread of the position adjustment bolt 134 is fastened is formed to penetrate along the longitudinal direction of the knob portion 116 in the operation section 132.

For example, when the position adjustment bolt 134 is rotated to one side, the operation rod 132 is moved adjacent to the punch 36, and when the position adjustment bolt 134 is rotated to the other side, the operation rod 132 is moved to the punch 36. ), and by changing the position of the operation shaft 132 in this way, it is possible to adjust the depth at which the scrap S is forcibly extracted by adjusting the turning angle of the extraction finger 110 according to the work environment.

Here, since it is a known technology that the position adjustment bolt 134 is rotatably supported without being removed from the fixing block 136, a detailed description thereof will be omitted.

The elastic spring 140 is provided as a conventional compressed coil spring extending vertically.

At this time, one end of the elastic spring 140 is supported on the side of the punch holder 32 facing the upper side of the knob portion 116 of the take-out finger 110 so as not to interfere with the punch plate 34, and the elastic spring 140 ) The other end of the knob is such that the extended end side of the striking portion 114 of the extraction finger 110 is accommodated in the entry/exit groove 118, that is, the extended end side of the striking portion 114 is accommodated inside the punch 36. It contacts the upper side of the portion 116.

Here, the elastic spring 140 may be disposed inside the spring housing 142 extending vertically from the punch holder 32 toward the knob portion 116, as shown in FIGS. 1 and 2, and may also include an elastic spring ( A contact cap 146 that slides through the lower surface of the spring housing 144 and contacts the upper side of the knob portion 116 may be mounted on the other end side of the spring housing 140.

That is, when the upper mold 30 is lowered toward the lower mold 10 to punch the electrode plate (E), the take-out finger 110 is also lowered toward the lower mold 10 along the upper mold 30, and the punch 36 and die 22 After the electrode plate (E) is punched out, when the punch 36 enters the inside of the pocket 20, at the same time, the knob portion 116 contacts the upper surface of the operating stem 132 and compresses the elastic spring 140. It rotates toward the upper side centered on the finger bracket 112. At this time, the extended end side of the striking portion 114 of the extraction finger 110 rotates toward the lower side centered on the finger bracket 112 and punches through the entry/exit groove 122. 36), the scrap S is pulled out to the outside and attached to the lower surface of the punch 36, and the scrap S is forcefully ejected toward the scrap discharge port 14.

On the contrary, when the upper mold 30 rises after punching the electrode plate (E), the extraction finger 110 also rises along the upper mold 30 and away from the lower mold 10, and thereby the knob portion 116 and the operation spacer 132 When spaced apart, the compressed elastic spring 140 is restored. By the restored elastic spring 140, the knob portion 116 rotates toward the lower side around the finger bracket 112, and the striking portion 114 The extension end side rotates toward the upper side around the finger bracket 112 and is received into the inside of the punch 36 through the entry/exit groove 118.

Preferably, the upper surface of the die plate 16 has a collision prevention groove 26 that prevents collision with the take-out finger 110 during the turning operation of the take-out finger 110, and is adjacent to the die plate 16 between the operation bars 132. It is formed to be connected to the pocket 20 from the end of.

The take-out finger operation detection unit 150 detects whether the take-out finger 110, which is linked to the lifting operation of the upper mold 30, malfunctions.

The take-out finger operation detection unit 150 includes a malfunction detection dog 152 and a malfunction detection sensor 154.

As shown, the malfunction detection dog 154 is provided in the shape of a plate extending approximately vertically, and the upper side is aligned with the knob portion 116 of the take-out finger 110 so that the lower side extends outside the end of the die holder 12. It is fixedly installed on the extension side of .

The malfunction detection sensor 154 is fixedly installed on the end side of the die holder 12 or the end side of the table T on which the die holder 12 is fixedly installed so as to face the lower side of the malfunction detection dog 154.

In the attached drawing, the malfunction detection sensor 154 is shown installed on the table T on which the die holder 12 is fixedly installed.

This malfunction detection sensor 154 detects the lower side of the malfunction detection dog 154 that moves up and down along the upper mold 30 to check whether the take-out finger 110 is malfunctioning.

For example, the malfunction detection sensor 154 indicates that the take-out finger 110 operates normally if the cycle of the bottom side of the malfunction detection dog 154 being separated, detected, separated, detected, and separated is repeated when the electrode plate (E) is punched. judge.

Preferably, the malfunction detection sensor 154 may be a typical proximity sensor.

In the notching mold capable of forcibly ejecting scrap according to the present invention formed in this way, the eject finger 100 strikes the scrap S and forcibly ejects it toward the scrap discharge port 14, and at the same time, the eject finger 110 discharges eject air. Therefore, it is possible to prevent the scrap (S) from rising (backflow).

The notching mold capable of forcibly ejecting scrap according to the present invention can selectively adjust the turning angle of the ejection finger 110, so that the ejection depth of the scrap (S) forcibly ejected toward the scrap discharge port 14 can be adjusted depending on the working environment. make it possible

The notching mold capable of forcibly ejecting scrap according to the present invention can improve the safety and reliability of the notching mold according to the present invention because it is possible to check whether the ejecting finger 100 is malfunctioning.

Claims (11)

A lower mold including a die holder, a die plate, and a die, wherein the plate to be punched is continuously and intermittently transferred;
An upper mold including a punch holder, a punch plate, and a punch, and punching out the electrode plate together with the lower mold while moving up and down toward the lower mold; and
It includes a scrap forced ejecting means installed between the lower mold and the upper mold, which forces scrap to be ejected toward the scrap discharge port of the lower mold in conjunction with the lifting operation of the upper mold,
The scrap forced extraction means is,
An extraction finger that strikes the scrap when punching the electrode plate and forces the struck scrap to be ejected toward the scrap outlet;
A finger operating member having an operation part that operates the take-out finger to forcibly take out the scrap when the electrode plate is punched, and an elastic spring that elastically returns the take-out finger when the upper die is raised after the electrode plate is punched; and
It includes a take-out finger operation detection unit that detects whether the take-out finger is malfunctioning,
The take-out finger is provided in the shape of a horizontally extending bar,
The take-out finger is disposed on the other side of the punch opposite to one side of the punch where a lateral force acts when punching the electrode plate,
The rear end of the take-out finger is rotatably connected in the vertical direction to a finger bracket extending vertically from the punch holder to the die holder,
The take-out finger includes a striking portion extending toward the punch with respect to the finger bracket, and a knob portion extending in a direction opposite to the punch,
The take-out finger is,
An air pipe that guides the blowing air; and
It further includes an air discharge hole that discharges the blowing air guided along the air pipe,
The air pipe is formed inside the take-out finger along the length of the take-out finger from the extended end of the knob to the extended end of the striking part,
At least one air discharge hole is formed on the lower side of the striking portion adjacent to the extension end of the striking portion,
The inflow end of the air pipe exposed by the extended end of the knob is connected to an air supply source,
The operating rod is installed on the upper surface of the die holder facing the lower side of the knob unit so as not to interfere with the die plate,
The lower side of the knob portion of the take-out finger, which descends along the upper shape when punching the electrode plate, is in contact with the upper surface of the operating shaft,
The operating interval is formed to have a height where the tip of the striking portion is drawn outward from the lower surface of the punch when in contact with the knob portion,
The operation period is installed to have a variable position along the longitudinal direction of the knob via a position adjustment bolt so as to adjust the depth at which the scrap is forcibly extracted,
The position adjustment bolt is rotatably supported without being removed from a fixing block installed at the end of the die holder so as to face the operating rod,
During the operation, a position adjustment hole into which the male thread of the position adjustment bolt is fastened is formed to penetrate along the longitudinal direction of the knob portion,
In the punch, an entry/exit groove for receiving and withdrawing the extended end side of the striking portion is formed concavely from the lower surface of the punch to the upper surface side of the punch and is formed to open toward the other side of the punch, wherein the extended end side of the striking portion is formed concavely toward the upper surface of the punch. It is accommodated inside the entry/exit groove so as not to interfere with the electrode plate punching, and is elastically pulled out through the lower surface of the entry/exit groove at the same time as the electrode plate is punched, striking the scrap and forcing it to be pulled out toward the scrap outlet,
One end of the elastic spring is supported on the punch holder side facing the upper side of the knob so as not to interfere with the punch plate, and the other end of the elastic spring is supported on the knob so that the tip of the striking part is accommodated inside the punch. It is provided as a vertically extending compression coil spring in contact with the upper side of the part, wherein the elastic spring is disposed inside a spring housing extending vertically from the punch holder to the knob part, and the spring housing is on the other end of the elastic spring. A contact cap is installed to slidably penetrate the lower surface and contact the upper side of the knob portion,
The take-out finger operation detection unit,
A malfunction detection dog provided in a vertically extending plate shape, the upper side of which is fixedly installed on the extended end side of the knob portion so that the lower side extends outside the end of the die holder; and
It includes a malfunction detection sensor fixed to the end side of the die holder or the end side of the table on which the die holder is fixedly installed so as to face the bottom side of the malfunction detection dog,
The malfunction detection sensor determines that the take-out finger is operating normally if the cycle of the lower side of the malfunction detection dog being separated, detected, separated, detected, and separated is repeated when the electrode plate is punched,
On the upper surface of the die plate, a collision prevention groove for preventing collision with the take-out finger during the turning operation of the take-out finger is formed to connect the pocket formed in the die plate from the end of the die plate adjacent during the operation to force scrap extraction. Notching mold available.
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