JP2019141917A - Punching device - Google Patents

Abstract

To provide a punching device in which a storage space for punching waste is provided in a foot pressor so that punching waste accumulated in a hollow part of a drill can be surely exhausted to the storage space.SOLUTION: As shown in a figure (a), punching waste 4a is stored in a hollow part 5a of a drill 5 in a punching state where the drill forms a punched hole 4 in a material 2 while descending. As shown in a figure (b), in a state where the drill 5 moves up to a stand-by position, a foot pressor 6 also moves up to the stand-by position. At the stand-by position, the foot pressor 6 moves up until a bottom face 6c separates from a surface of the material 2 and a lower end of the drill 5 intrudes into the storage space 6c. A sealing member 9 closes an insertion port 6a. An exhaust pin 7 exhausts the punching waste 4a from the hollow part 5a of the drill 5 into the storage space 6c. As the insertion port 6a is closed, the punching dust 4a does not fall down to the material 2 side. A negative pressure generating member 23 suctions air in the storage space 6c so that the punching waste 4a is fed to a hose 24 side at a right side by generated airflow.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a perforating device that lowers a drill from above onto a cloth placed on a table and perforates while accommodating cutting waste in the drill.

  2. Description of the Related Art Conventionally, in a cutting machine or the like, a cylindrical rotary drill is used in addition to a cutting blade for cutting a cloth in order to open a circular perforation hole or the like in a cloth such as fabric or leather (for example, Patent Document 1). , 2). The dough is held on the table by suction downward, and the drill is mounted with a cutting blade on a head that moves two-dimensionally above the dough along the surface of the dough. The perforated hole is formed by drilling the surface of the fabric with a descending drill. Scrap generated during drilling is accommodated in a hollow portion in the drill. After drilling, when the drill is lifted and pulled out from the dough, the scraps also remain in the hollow portion and rise. If the scrap remains in the hollow portion, troubles such as an increase in resistance occur at the time of drilling the next perforation hole, and therefore it is necessary to remove the scrap in the hollow portion. In order to remove the scraps, a discharge pin is provided in the drill so as to descend from above and discharge the scraps downward.

  In Patent Document 1, when the drill (punch (7)) is pulled out from the dough after drilling, the discharge pin (rod (22)) is pushed down to keep the scraps inside the perforation hole. In Example 2 of Patent Document 2, an accommodation space for accommodating scraps is provided in a foot presser for punching that presses the surface of the fabric during punching. In the storage space, an air ejection part that blows off the chips pushed out from the lower end of the drill by the discharge pin in a state where the drill is raised and pulled out from the dough, and a storage part that stores the blown-off chips Prepare it.

Japanese Patent Laid-Open No. 03-098794 Japanese Patent No. 5779450

  In order to perform perforation efficiently, a plurality of doughs are laminated to form perforations. As the number of layers of fabric changes, the height of the surface of the fabric also changes. Further, as perforation and cutting progress, air that sucks the fabric onto the table leaks, the suction force decreases, and the surface height increases.

  As in Patent Document 1, when the scrap is pushed down by the discharge pin so as to keep the scrap inside the perforated hole of the dough, the discharge pin that pushes down the top of the scrap at the time when the lower end is pulled out from the surface of the dough by the lift of the drill. It is necessary to adjust the timing so that the lower end is lowered to the surface height of the fabric. When the timing is shifted, it becomes difficult to keep the scraps discharged by the discharge pin inside the perforation hole. For example, if the discharge pin discharges the scrap after the lower end of the drill rises above the surface of the fabric, a part of the scrap may be scattered on the fabric surface without returning to the perforated hole of the fabric. The scraps scattered on the surface of the dough may enter under the foot presser for punching or cutting and reduce the accuracy of punching or cutting. Furthermore, it is necessary to remove the scraps retained in the perforated holes of the fabric in a subsequent process, which takes time.

  As in Patent Document 2, if the scraps are discharged from the lower end of the raised drill into the housing space provided in the foot press, and the discharged scraps are blown off by air jet and stored in the storage part, Waste is not scattered on the dough surface. However, after punching, it is necessary to keep the foot press on the surface of the dough until the scraps are processed. Therefore, it takes time to move to the next drilling or cutting. This is because if the foot presser is lifted from the surface of the fabric during the processing of the scraps, the scraps may fall and be scattered on the surface of the fabric from the drill insertion hole opened on the bottom surface of the foot presser. Also, if you keep the foot presser on the surface of the fabric without floating and try to store all of the scraps in the storage part, suction force will work through the perforated hole and the insertion hole in the bottom of the foot presser. However, a part of the scraps may be drawn toward the perforation hole. When the thickness of the dough is thin, the lower end of the drill is positioned higher than the accommodation space, and the scraps may be scattered above the foot presser.

  It is an object of the present invention to provide a waste press accommodating space in the foot press so that the waste accumulated in the hollow portion of the drill can be reliably discharged into the storage space. It is to provide a percussion device that does not require time to keep.

The present invention
A table on which a fabric for punching perforations is placed;
A drill that can switch between a standby state above the table and a perforation state that forms a perforation hole in the fabric with a lower edge blade while descending, and that can accommodate scraps generated in the perforation state in an internal hollow portion;
In a perforated state, a foot presser that presses the surface of the fabric around the perforation hole,
Provided on the bottom surface for pressing the surface of the dough, an insertion port through which the drill is inserted in a drilled state, and provided above the insertion port, around the drill in the drilled state, and having a storage space capable of storing scraps,
In the standby state of the drill, a foot presser that can be raised until the bottom surface is separated from the surface of the fabric and the lower end of the drill enters the accommodation space;
A discharge pin that can move up and down in the drill, descends from above into the standby drill, and can discharge the scraps contained in the hollow portion downward,
In a perforation device comprising a control means for controlling a drill, a foot presser and a discharge pin,
The discharge pin is controlled by the control means so that the lower end of the drill enters the storage space and is lowered to discharge the scraps from the hollow portion of the drill into the storage space.
A perforation device comprising fall prevention means for preventing scraps falling from a hollow portion of a drill from dropping from the insertion port to the fabric side while the lower end of the drill is rising from the insertion port.

  In the present invention, the fall prevention means is a sealing member that opens and closes the insertion port.

  In the present invention, the control means rotates the drill when the discharge pin discharges the scraps from the hollow portion.

  In the present invention, the control means may continuously repeat the operation of discharging the scraps from the hollow portion with the discharge pin a plurality of times.

  Moreover, this invention is provided with the airflow generation means which moves the said extraction waste from the said accommodation space with the airflow to generate | occur | produce.

  According to the present invention, in the standby state of the drill, the foot presser is also lifted to allow the lower end of the drill to enter the foot presser accommodating space, and the fall prevention means prevents the chips from falling from the insertion hole on the bottom surface to the fabric side. . The scrap accumulated in the hollow portion in the drill in the drilled state can be reliably discharged into the accommodation space without dropping to the fabric side. Since the foot presser is raised and the scraps are discharged into the accommodation space in a state where the bottom surface is separated from the surface of the fabric, it is not necessary to keep the foot presser on the surface of the fabric for discharging.

  Moreover, since the fall prevention means of the present invention closes the insertion port with a sealing member and mechanically closes it, it is possible to reliably prevent scraps from falling to the fabric side.

  Further, according to the present invention, since the drill is rotated, it is possible to make it difficult for scraps discharged by the discharge pin to be sandwiched between the lower end of the drill and the sealing member that closes the insertion port.

  Further, according to the present invention, the scrap accumulated in the hollow portion of the drill can be reliably discharged by continuously repeating the discharging operation by the discharging pin a plurality of times.

  Further, according to the present invention, the scraps can be moved by airflow from the accommodation space around the drill. It is possible to prevent the waste from collecting from the hollow portion of the drill so as not to interfere with the discharge of the waste from the hollow space of the drill.

FIG. 1 is a simplified front sectional view showing a perforated state and a discharged state of a perforating apparatus 1 according to an embodiment of the present invention. FIG. 2 is a left side view showing a schematic overall configuration of the punching device 1 provided in the cutting head of the cutting machine. FIG. 3 is a plan cross-sectional view showing the opened / closed state of the sealing member 9. FIG. 4 is a simplified front sectional view of the percussion device 1. FIG. 5 is a simplified front sectional view showing a part of the operation state as the perforation device 1. FIG. 6 is a flowchart showing the operation as the perforation device 1 controlled by the control means 8.

  Hereinafter, the schematic configuration of the perforation device 1 according to an embodiment of the present invention and the operation including the drilling state and the standby state will be described with reference to FIGS. For convenience of explanation, portions that are not described in the drawings to be described may be referred to with reference numerals described in other drawings.

  FIG. 1 and FIG. 2 show a schematic configuration and a typical operation state of a perforation device 1 which is an embodiment of the present invention. The perforating device 1 of this embodiment is provided in a cutting head that can move two-dimensionally on a table as a part of the cutting machine. The fabric 2 to be perforated is placed on the table 3. The perforation device 1 includes a drill 5 that drills a perforation hole 4 in the fabric 2, a foot presser 6, a discharge pin 7, a control means 8, and the like. The fabric 2 is laminated on a plurality of sheet materials such as fabrics and industrial materials, and is held on the table 3 with the surface covered with an air impermeable resin film. In order to hold the fabric 2 by suction from below, the surface of the table 3 is formed of bristles having elasticity and flexibility. The fabric 2 is a part used for apparel, interior, automobile interior, and the like.

  The drill 5 of the perforation device 1 is in a perforated state in which a perforation hole 4 is formed in the dough 2 while descending as shown in FIG. 1 (a), and scraps above the table 3 as shown in FIG. 1 (b). The discharge state of 4a can be switched. In the discharged state, the drill 5 and the foot presser 6 are in a standby state where they are raised to their standby positions. The maximum thickness of the dough 2 held on the table 3 is defined so that a gap is generated between the drill 5 and the foot presser 6 at the standby position so that the cutting head can be moved two-dimensionally. ing.

  The drill 5 has a cylindrical shape, and a lower end is a blade. When the drill 5 is lowered in a rotating perforated state, scrap 4a is formed in the hollow portion 5a inside. In order to perform stable drilling, the foot presser 6 presses the surface of the fabric 2 around the perforation hole 4 with a bottom surface 6b around the insertion opening 6a through which the drill 5 is inserted in the drilled state. The discharge pin 7 can move up and down in the drill 5, descends from above into the drill 5 at the standby position, and can discharge the chips 4 a accommodated in the hollow portion 5 a downward.

  In the present embodiment, the control means 8 shown in FIG. 2 is provided as a part of a controller that controls the operation of the entire cutting machine, and controls the drill 5, the foot presser 6 and the discharge pin 7 to include a standby state and a discharge state. Switch each state. The foot presser 6 has an accommodation space 6c that can accommodate the scraps 4a above the insertion opening 6a. The accommodation space 6c is provided around the drill 5 in the drilled state of FIG. In the discharge state shown in FIG. 1B, the drill 5 is in a standby state, and the foot presser 6 is also in a standby state in which it rises to the standby position. At the standby position, the foot presser 6 rises until the bottom surface 6c is separated from the surface of the fabric 2 and at least the lower end of the drill 5 enters the accommodation space 6c. The discharge pin 7 is lowered so as to discharge the scrap 4a from the hollow portion 5a of the drill 5 into the storage space 6a in a state where the lower end of the drill 5 has entered the storage space 6c.

  The foot presser 6 is also provided with a fall prevention means for preventing the scrap 4a falling from the hollow portion 5a of the drill 5 from dropping from the insertion opening 6a to the dough 2 side in the standby state of the drill 5. Even if the scrap 4a is discharged from the lower end of the drill 5 to the receiving space 6c at the standby position of the drill 5, the scrap 4a falls from the insertion port 6a of the bottom surface 6b to the dough 2 side by the fall prevention means. To prevent that. After the drill 5 is lifted to the standby position, the scrap 4a accumulated in the hollow portion 5a in the drill 5 in the drilled state can be reliably discharged into the accommodation space 6c without dropping to the dough 2 side. Since the foot presser 6 is raised and the scraps 4a are discharged to the accommodation space 6c in a state where the bottom surface 6b is separated from the surface of the fabric 2, there is no need to keep the foot presser 6 on the surface of the fabric 2 for discharging. Become.

  The fall prevention means of the present embodiment is a sealing member 9 that can open and close the insertion port 6a. The sealing member 9 is opened by the opening / closing cylinder 10 in the drilled state of FIG. 1 (a) so that the drill 5 can be inserted through the drilling hole 6a, and the dough 2 can be drilled in the drilled state of FIG. 1 (b). Close the mouth 6a. The open / close cylinder 10 is attached to the side of the foot presser 6. Since the sealing member 9 as the fall preventing means mechanically closes the insertion opening 6a, it is possible to reliably prevent the scraps from dropping to the 4a dough 2 side. FIG. 1B also shows a sectional line III-III corresponding to the plan sectional view of FIG.

  As shown in FIG. 2, the main part of the perforation device 1 is attached to a cutting head of a cutting machine (not shown) via a frame 1a. The frame 1 a includes a lower base material 11, an upper base material 12, and a side base material 13 that connects the lower base material 11 and the upper base material 12. Between the lower base material 11 and the upper base material 12, elevating guides 14 and 15 for guiding the elevating and lowering of the foot presser 6 are provided. The foot presser 6 has a top plate 6d at the top. The top plate 6d is suspended at the lower ends of the lifting rods 14a and 15a protruding downward from the lifting guides 14 and 15. In order to drive the top plate 6d up and down, an up-and-down cylinder 16 supported by the lower base 11 is provided. The top plate 6d has a drill hole 6e through which the drill 5 is inserted.

  The drill 5 is exchangeably held by a chuck 18 at the lower end of a rotary shaft 17 provided between the lower base material 11 and the upper base material 12. The drill 5 is rotationally driven by a motor 20 via a chuck 18, a rotating shaft 17, and a gear box 19. The motor 20 is attached to the upper base 12, and the rotational driving force is transmitted by the belt 19 b from the pulley 20 a of the output shaft to the pulley 19 a on the gear box 19 side. An upper and lower cylinder 21 for moving the gear box 19 up and down is attached to the upper base member 12, and this vertical movement moves the drill 5 between the standby position and the drilled state. A discharge cylinder 22 is also attached to the upper substrate 12, and the discharge pin 7 is moved up and down by a discharge rod 22a. A bearing 7 a is provided on the upper portion of the discharge pin 7, and the discharge pin 7 is supported so as to be rotatable around the upper and lower axes.

  A negative pressure generating member 23 described in FIG. 3 is provided on the side of the foot presser 6 that faces the sealing member 9, and is connected to the storage unit 25 via the hose 24. The negative pressure generating member 23 generates a negative pressure by blowing compressed air, sucks the storage space 6c with the negative pressure, generates an airflow flowing from the storage space 6c to the storage unit 25 via the hose 24, and removes it. It functions as an airflow generating means for sucking and moving the waste 4a. You may make it attract | suck from the storage part 25 or the hose 24 side. Alternatively, air may be ejected from the sealing member 9 side to generate an air flow, and the scrap 4a may be blown off from the storage space 6c to the storage unit 25 via the hose 24. Further, suction and ejection may be combined for the generation of airflow.

  The scrap 4a discharged to the storage space 6c by the discharge pin 7 moves to the storage unit 25 by this air flow. The scrap 4 a moved to the storage unit 25 is discharged out of the cutting head when the cutting head moves to a specific location on the table 3, as in Patent Document 2. Moreover, the pick-up part of the scrap 4a may be provided on the table 3 side, the hose 24 may be extended outside the cutting head, and the scrap 4a may be directly discharged to the pick-up part.

  Further, the scrap 4a can be simply discharged and retained in the accommodation space 6c. When the scrap 4a is accumulated, the cutting head is moved to the end of the table 3, etc., and the scrap 4a is manually scraped from the accommodation space 6c. In particular, if the number of perforated holes 4 to be perforated is small and not much scrap 4a is generated, the frequency of scraping can be reduced.

  FIG. 3 shows the opened / closed state of the sealing member 9 as viewed from the cross-sectional line III-III in FIG. In the open state shown in FIG. 3A, the sealing member 9 retracts from above the insertion port 6a, and in the closed state shown in FIG. 3B, the sealing member 9 covers the insertion port 6a. In the negative pressure generating member 23, when compressed air is blown from the connection port 23a, an air flow to the right in the figure is generated in the inclined hole 23b, and the air in the accommodation space 6c is sucked to the right hose 24 side. Send it in. At this time, the scrap 4a discharged to the storage space 6c is also discharged to the hose 24 side. Although the opening and closing of the sealing member 9 is directly performed by the output rod of the opening and closing cylinder 10, a link or a lever may be mediated between the output rod and the sealing member 9. If air operated by compressed air is used as the open / close cylinder 10, the compressed air supplied to the negative pressure generating member 23 can be shared with the supply source, but an electric motor or solenoid is used as a drive source. You can also The sealing member 9 may be opened and closed not only by linear movement but also by swinging.

  The fall prevention means may not only close the insertion port 6a with the sealing member 9 and mechanically close it, but also form an air curtain directly above the insertion port 6a. If the scrap 4a is prevented from dropping downward from the insertion opening 6a by the air curtain, the scrap 4a can be moved to the hose 24 side by the airflow.

  In addition, when the insertion port 6a is mechanically blocked with a sealing member 9 or the like as a fall prevention means, the scrap 4a discharged from the hollow portion 5a of the drill 5 by the discharge pin 7 is connected to the lower end of the discharge pin 7 and the sealing member 9 There is a risk of being caught between. When the scrap 4a is caught, it becomes difficult to discharge with airflow, and if the sealing member 9 is opened for the next drilling, the scrap 4a may fall from the insertion port 6a onto the surface of the fabric 2 and be scattered. . When the scrap 4a is caught, the drill 5 may be rotated even in the discharged state. When the drill 5 is rotated, the discharge pin 7 is rotated along with the rotation of the drill 5, and the discharge pin 7 is lowered while discharging the scrap 4a, thereby discharging the scrap 4a. When the scrap 4 a comes out from the lower end of the drill 5, the scrap 4 a is immediately sucked as indicated by an arrow or is pushed out without being sucked until the lower end touches the sealing member 9. Even if it is pushed out until the lower end of the scrap 4a touches the sealing member 9, the lower end of the scrap 4a does not rotate, and the upper end continues to rotate, so the scrap 4a is not twisted and pinched. In addition, it is discharged by airflow.

  FIG. 4 is a simplified front sectional view of the percussion device 1 and shows a standby state in which the drill 5 and the foot presser 6 are raised to the standby position. In this standby state, the insertion opening 6a of the foot presser 6 is opened by the sealing member 9, and the discharge pin 7 is also raised to the standby position. Such a standby state is set before the dough 2 is stacked on the table 3 and the perforation of the perforated holes 4 is started or during cutting. 1A, the foot presser 6 is lowered with the lifting cylinder 16 until the bottom surface 6b comes into contact with the surface of the fabric 2, the drill 5 is moved with the upper and lower cylinders 21, and the foot presser 6 with the lower end thereof. This is done by passing through the insertion opening 6a and lowering until the cloth 2 also penetrates. When the drill 5 is lowered, the motor 20 is also driven to rotate the drill 5.

  FIG. 5 shows a state in which the drilling state of FIG. 1A is finished in (a) and the drill 5 is raised to the standby position by the upper and lower cylinders 21. The scrap 4a is accommodated in the hollow portion 5a of the raised drill 5. In addition, in the state where the lamination | stacking thickness of the material | dough 2 is near the maximum, the lower end of the drill 5 may stay in the accommodation space 6c, without rising from the top plate 6d of the foot presser 6. Next, as shown in FIG. 5B, the open / close cylinder 10 is driven to close the insertion opening 6a with the sealing member 9, and the lift cylinder 16 is driven to raise the foot presser 6 to the standby position. As shown in FIG. 5 (a), even when the lower end of the drill 5 rises above the accommodation space 6c, if the foot presser 6 is raised to the standby position, the lower end of the drill 6 enters the accommodation space 6c. . If the discharge cylinder 22 is driven and the discharge pin 7 is lowered in this state, the discharge state as shown in FIG. 1B is obtained, and the scrap 4a is discharged into the storage space 6c.

  In FIG. 5A, the insertion port 6 a may be immediately closed by the sealing member 9 when the lower end of the drill 5 rises above the insertion port 6 a. Further, when the lower end of the drill 5 rises above the top plate 6d of the foot presser 6, a gap is generated as shown in FIG. In order to prevent the gap from being generated, the foot presser 6 may be raised before the lower end of the drill 5 passes through the drill hole 6e to follow the rise of the drill 5. When a gap is generated, a bellows-like sleeve or the like may be provided between the top plate 6d and the lower base 11 so as to cover the periphery of the drill 5 in order to prevent spillage of the scrap 4a.

  FIG. 5C shows a state where the lower end of the discharge pin 7 is lowered so as to protrude below the lower end of the drill 5 at the end of the discharge state in which the scrap 4a is discharged as shown in FIG. Indicates. In order to reliably discharge the scrap 4a from the hollow portion 5a, the control means 8 drives the discharge cylinder 22 a plurality of times, and repeats the discharge operation of the scrap 4a by the discharge pin 7 continuously a plurality of times. You can also. When the opening / closing cylinder 10 is driven and the insertion port 6a is opened by the sealing member 9, the state shown in FIG.

  FIG. 6 shows an example of a control procedure as the perforation device 1 performed as a part of the operation of the cutting machine. In this control, the control means 8 controls the cutting head, the opening / closing cylinder 10, the elevating cylinder 16, the motor 20, the upper and lower cylinders 21, and the discharge cylinder 22 in accordance with cutting data set in advance so as to include the positions of the perforations 4 and the cutting lines. And a control valve for compressed air supplied to the negative pressure generating member 23. Since the drill 5, the foot presser 6, and the discharge pin 7 each have an air cylinder as a drive source, they can be controlled by the control means 8 at a suitable timing. However, the drive source is not limited to an air cylinder, and may be any device that can be controlled by the control means 8, such as a motor.

  In step s1 from the start, as shown in FIG. 4, the drill 5, the foot presser 6 and the discharge pin 7 are raised to the standby positions, respectively, and the sealing member 9 is opened. In the next step s2, the cutting head is moved to the position of the next perforation hole 4 or cutting line. In step s3, it is determined whether or not there is a perforated hole 4 to be drilled at the moved position. If there is no perforation hole 4, the cutting operation is performed and then the process returns to step s 2. If there is a perforation hole 4, the foot presser 6 is lowered in step s 4 and the fabric 2 around the perforation hole 4 is formed on the bottom surface 6 b. Hold the surface.

  In step s 5, the rotation of the drill 5 is started by driving the motor 20. In step s6, the upper and lower cylinders 21 are driven to lower the drill 5 to form a perforated state as shown in FIG. After drilling, in step s7, the upper and lower cylinders 21 are driven to raise the drill 5 to the standby position while rotating as shown in FIG. In the next step s8, the sealing member 9 is closed. In step s9, the elevating cylinder 16 is driven to raise the foot presser 6 to the standby position as shown in FIG.

  In step s10, since the bottom surface 6b of the foot presser 6 is separated from the surface of the fabric 2, the movement of the cutting head to the next position can be started and the following procedure can be performed during the movement, thereby shortening the time. Can be achieved. As the processing of the scrap 4a, the compressed air control valve is opened and suction by the negative pressure generating member 23 is started. In step s11, the discharge cylinder 22 is driven to lower the discharge pin 7, and the scrap 4a is discharged from the hollow portion 5a of the drill 5 into the receiving space 6c of the foot presser 6. In the next step s12, the discharge cylinder 22 is driven to raise the discharge pin 7 to the standby position. In step s13, it is determined whether or not the discharge operation by the discharge pin 7 is set in the cutting data a plurality of times. If it is a plurality of times, the process returns to step s11 and the operations from step s11 to s13 are repeated continuously a plurality of times. The state in the middle of discharging the scrap 4a when the discharge pin 7 is lowered becomes the discharge state shown in FIG. 1B, and when the discharge pin 7 is lowered to the lowest position after the discharge state is finished, the state shown in FIG. It becomes a state. In step s14, the rotation drive by the motor 20 is stopped, the rotation of the drill 5 is stopped, the compressed air control valve is closed, and the suction by the negative pressure generating member 23 is stopped. If the sealing member 9 is opened in step s15, it will be in the state shown in FIG. 4, and it will return to step s1. If the movement of the cutting head has been started in step s10, the movement is completed in step s2. When there is no need to drill the perforation hole 4, the operation as the perforation device 1 is terminated, and when the cutting is not necessary, the operation as the cutting machine is also terminated.

  The above control procedure is an example, and the present invention is not limited to this. For example, the suction start in step s10 may be immediately after the sealing member 9 is closed in step s8. Moreover, if rotation is unnecessary in the discharge | emission state of the extraction scrap 4a, what is necessary is just to stop rotation after raising the drill 5 by step s8. Although the perforation device 1 of this embodiment is provided as a part of the cutting machine, it can also be a dedicated machine that only perforates the perforation hole 4.

DESCRIPTION OF SYMBOLS 1 Perforation device 2 Material | dough 3 Table 4 Perforation hole 4a Cutting waste 5 Drill 5a Hollow part 6 Foot presser 6a Insertion opening 6b Bottom surface 6c Housing space 7 Discharge pin 8 Control means 9 Sealing member 10 Opening / closing cylinder 16 Lifting cylinder 20 Motor 21 Upper / lower cylinder 22 Discharge cylinder 23 Negative pressure generating member

Claims (5)

It is possible to switch between the standby state above the fabric for punching perforations and the perforation state for forming perforations in the fabric with the blade at the lower end while descending. Drill and
A foot presser that presses the surface of the fabric around the perforated hole in a perforated state,
Provided on the bottom surface for pressing the surface of the dough, an insertion port through which the drill is inserted in a drilled state, and provided above the insertion port, around the drill in the drilled state, and having a storage space capable of storing scraps,
In the standby state of the drill, a foot presser that can be raised until the bottom surface is separated from the surface of the fabric and the lower end of the drill enters the accommodation space;
A discharge pin that can move up and down in the drill, descends from above into the standby drill, and can discharge the scraps contained in the hollow portion downward,
In a perforation device comprising a control means for controlling a drill, a foot presser and a discharge pin,
The discharge pin is controlled by the control means so that the lower end of the drill enters the storage space and is lowered to discharge the scraps from the hollow portion of the drill into the storage space.
A perforation device comprising fall prevention means for preventing scraps falling from a hollow portion of a drill from falling from the insertion port to the fabric side while the lower end of the drill is rising from the insertion port.   The perforation device according to claim 1, wherein the fall prevention means is a sealing member that opens and closes the insertion opening.   3. The perforating apparatus according to claim 2, wherein the control means rotates the drill when the discharge pin discharges the scraps from the hollow portion.   The perforation device according to any one of claims 1 to 3, wherein the control means continuously repeats the operation of discharging the scraps from the hollow portion with the discharge pin a plurality of times.   The perforation device according to any one of claims 1 to 4, further comprising an air flow generating means for moving the scraps from the accommodation space with an air flow to be generated.

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