JP2006205199A - Pierce burring arrangement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve layout efficiency and to reduce the influence of eccentric load in a pierce burring arrangement for forming burring holes at a plurality of points of a baffle plate. <P>SOLUTION: Workpieces 39 are conveyed to prescribed lower die positions by an X-Y conveyance mechanism 59, and spacers 35 are conveyed up to prescribed upper die positions by an X-Y conveyance mechanism 51. The pressure from a hydraulic press 19 is exerted via the spacers 35 toward the upper dies 27a etc., and the workpieces 39 are subjected to piercing from the lower dies 27b, etc., side toward the upper dies 27a etc., sides so that the burring holes are formed in the prescribed positions of the workpieces. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a piercing burring device for forming burring holes at a plurality of locations on a baffle plate.

  A baffle plate as shown in FIG. 7 is used as a part for partitioning the internal space of a silencer mounted on a vehicle or the like. The baffle plate 100 is formed with a plurality of burring holes 100a formed so that the exhaust pipe can be inserted. As shown in FIGS. 7A to 7C, the formation position of the burring hole 100a is substantially the same regardless of the type of the baffle plate 100, but the diameter of the burring hole 100a formed at each position is as follows. The baffle plate 100 differs depending on the type.

  Thus, in order to form the burring holes 100a in different types of baffle plates 100, it is necessary to use a mold corresponding to each hole diameter. However, changing the mold each time depending on the type of baffle plate 100 to be processed leads to a decrease in production efficiency. Accordingly, a piercing burring device has been proposed that can accurately cope with the production status of the production line while maintaining high productivity.

  A conventional example of a piercing burring device is shown in FIGS. 8 is a front view, and FIG. 9 is a top view showing the lower part. Hereinafter, the configuration of the main part will be described.

  In a conventional piercing burring apparatus (hereinafter referred to as an apparatus as appropriate) 101, a plurality of molds 105 to 115 having different hole diameters are arranged in a line at a predetermined interval. Each of the molds 105 to 115 includes an upper mold 105a, 107a, 109a, 111a, 113a, 115a and a lower mold 105b, 107b, 109b, 111b, 113b, 115b. A support mechanism 117 that supports the workpiece (sheet metal material) 103 is disposed between the upper mold and the lower mold, and the workpiece 103 is connected to the support mechanism 117 to a predetermined processing position (FIG. 9). A moving mechanism 119 that moves in the Y direction) is provided. Further, a transport mechanism 121 (121a, 121b) for transporting the workpiece 103 supported by the support mechanism 117 to another adjacent support mechanism 117 (X direction in FIG. 9) is provided.

In the apparatus 101 having the above-described configuration, in order to form the burring hole 100a having a predetermined hole diameter in the work 103, the work 103 placed on the destacker 123 is sucked by the transport mechanism 121, and the work 103 is lifted. 103 is conveyed onto a predetermined lower mold (X direction). Subsequently, the workpiece 103 is moved to a predetermined position by the moving mechanism 119 (Y direction). Next, the upper mold is lowered, and the workpiece 103 on the support mechanism 117 is pierced with the upper and lower molds to form a burring hole 100 a having a predetermined hole diameter at a predetermined position of the workpiece 103. Hereinafter, by repeating the same operation, a plurality of types of baffle plates can be manufactured by forming burring holes 100a in the work 103 one by one (see Patent Document 1).
JP 2000-94058 A

  However, in the apparatus shown in the conventional example, it is necessary to ensure the distance between the adjacent molds so that the molds not involved in processing and the workpiece do not interfere with each other. The device had a long shape, and line layout was difficult. Further, when piercing is performed with a die at the end, an eccentric load is applied to the slide that applies pressure to the die, so that reinforcement for increasing the rigidity of the apparatus is necessary, which causes an increase in equipment costs.

  An object of the present invention is to provide a piercing burring device that improves layout efficiency and reduces the influence of eccentric load.

  In order to achieve the above object, the invention of claim 1 is a piercing burring device that forms a burring hole at a predetermined position of a sheet metal material by piercing, and is constituted by a pair of upper mold and lower mold, and has a predetermined interval. A plurality of molds arranged in at least one row, press means for applying pressure to the upper mold to form burring holes in the sheet metal material, and a spacer for transmitting pressure from the press means to the upper mold, Spacer conveyance means for conveying the spacer to a predetermined upper mold position, support means for supporting the sheet metal material, and sheet metal material conveyance means for conveying the sheet metal material supported by the support means to a predetermined lower mold position. The sheet metal material conveying means conveys the sheet metal material to a predetermined lower mold position, and the spacer conveying means conveys the spacer to a predetermined upper mold. The sheet metal material is pierced from the lower mold side to the upper mold side with respect to the sheet metal material by applying pressure from the pressing means to the upper mold via the spacer. A burring hole is formed at a predetermined position.

  According to a second aspect of the present invention, the first aspect of the present invention is the first aspect of the present invention, wherein the first embodiment of the present invention is the first embodiment of the present invention. And an adsorbing means for adsorbing the extracted dregs accommodated in the inside of the apparatus. The adsorbing means adsorbs the uppermost extracted dregs accommodated in the extracted dregs accommodating part, and the adsorbing means adsorbs the extracted dregs. In this state, the spacer conveying means is driven to convey the spacer to a predetermined position, whereby the extracted residue is discharged from the extracted residue storage portion.

  In the invention of claim 1, since the piercing process is performed from the lower mold toward the upper mold, the lower mold that becomes the burring die does not sink during the piercing process, and only in the mold involved in the machining. Since pressure is applied, it is possible to prevent formation of burring holes in unnecessary portions. For this reason, it is not necessary to ensure the distance between the adjacent molds so that the molds not involved in machining and the workpiece do not interfere with each other, and the distance between the molds can be narrowed as compared with the conventional technique. Therefore, even if the types of burring holes increase, by arranging the dies in a plurality of rows and reducing the distance between the dies, the apparatus shape can be made compact and the line layout can be made easy. Therefore, layout efficiency can be improved.

  In addition, since the pressure from the slide that applies pressure to the mold is applied only to the mold facing the spacer, the influence of the eccentric load acting on the slide can be reduced even when piercing is performed with the end mold. it can. This eliminates the need for reinforcement for increasing the apparatus rigidity, and can reduce the equipment cost.

  Embodiments of a piercing burring apparatus according to the present invention will be described below with reference to the drawings. In each drawing, in order to simplify the description, shapes, hatching, symbols, and the like are omitted as appropriate.

  FIG. 2 is a front view of the piercing burring apparatus according to the present embodiment. The piercing burring apparatus 11 includes a bed 15 that supports the entire apparatus on a base 13, and support pillars 17 are arranged at four corners thereof. A hydraulic press 19 is fixedly installed on the uppermost portion of the support column 17, and a slide 21 is attached below the hydraulic press 19. The slide 21 is connected to the shaft 19a of the hydraulic press 19, and is engaged with the support column 17 so as to move up and down in conjunction with the shaft 19a.

  A spacer 35 and a spacer holder 37 that holds the spacer 35 are attached to the lower surface of the slide 21 so that the spacer 21 can be transported in the XY direction in a plane by an XY transport mechanism (not shown). The spacer 35 plays a role of transmitting the downward movement of the slide 21 to the upper mold. Although not shown in FIG. 2, an XY transport mechanism for transporting the work 39 to a predetermined position is provided at the end of the bed 15.

  An upper holder plate 23 is fixedly installed at a predetermined position of the support pillar 17 below the slide 21. Molds 27, 29, 31 and 33 are arranged on the upper holder plate 23. Although the said metal mold | die is arrange | positioned at 2 rows, in a present Example, it shall attach and code | symbol only about the four metal mold | dies 27-33 arrange | positioned at the back | inner side.

  Each of the molds 27 to 33 includes an upper mold 27a, 29a, 31a, 33a and a lower mold 27b, 29b, 31b, 33b. The workpiece 39 is pierced by the upper dies 27a to 33a and the lower dies 27b to 33b, so that burring holes are formed at predetermined positions. In each figure, the molds are shown with the same dimensions, but the molds 27 to 33 constituted by the upper molds 27a to 33a and the lower molds 27b to 33b form burring holes having different hole diameters.

  The lower molds 27 b to 33 b are held by a lower holder plate 25 that is fixedly installed on the upper portion of the bed 15.

  Next, the structure of the metal mold | die and spacer in a present Example is demonstrated. 1 is a front sectional view showing the structure of the upper and lower molds in FIG. 2, and FIG. 3 is a right side sectional view of FIG. Hereinafter, the mold 27 will be described as an example.

  The upper die 27a is composed of an upper die burring punch 41 and an upper die punch holder 43. The upper die 27a is urged upward by a spring 45 attached to the upper holder plate 23 and can move up and down to the upper holder plate 23. It is attached. Further, an upper die pad 42 urged downward by a spring 44 is attached to the upper die burring punch 41. The upper die pad 42 is used to prevent the position of the workpiece 39 from being displaced by being pressed against the workpiece 39 when the upper die 27a reaches the bottom dead center and performs piercing.

  1 and 3, the upper mold 27a is lowered to the lower mold 27b side to indicate that it is at the bottom dead center, and the other upper molds are illustrated to be at the top dead center (standby state). . As shown in these figures, when the hydraulic press 19 is actuated and the slide 21 is lowered, pressure is applied only to the upper die 27a facing the spacer 35 to perform piercing, and the other upper die 29a, Since the pressure of the hydraulic press 19 is not applied to 31a and 33a, piercing is not performed.

  The lower mold 27 b includes a lower mold piercing punch 47 and a lower mold burring die 49.

  As described above, in the piercing burring apparatus 11 of the present embodiment, the burring punch is arranged in the upper mold, and the piercing punch and the burring die are arranged in the lower mold, so that the direction of piercing processing which is the upward direction in the conventional apparatus can be changed. It is inverted downward so that piercing is performed from the lower side toward the upper die. According to this, since the lower mold does not sink during the piercing process, even when the work 39 is planarly overlapped with another adjacent mold, the work 39 interferes with another mold during the processing. Therefore, piercing can be performed only on necessary portions.

  As shown in FIG. 3, an XY transport mechanism (spacer transport means) 51 for transporting the spacer 35 in the XY direction is attached to the bracket 51a at one end of the slide 21 on the back side of the apparatus 11. Is attached through. The spacer 35 is inserted into the spacer holder 37 so as to be movable up and down. The spacer 35 is driven by the XY transport mechanism 51 so that the spacer 35 is transported to a predetermined mold position. Accordingly, the spacer 35 applies pressure only to the molds involved in processing, and does not apply pressure to the other molds.

  In addition, a vacuum cup cylinder 53 is attached inside the spacer 35 to adsorb a punched residue, which will be described later, with a negative pressure. The tip of the vacuum cup cylinder 53 protrudes by a certain length, and is configured so as to adsorb only the uppermost portion of the removed waste accumulated in the upper punch holder 43. At a predetermined position of the upper holder plate 23, a chute 55 is disposed for discarding the waste residue adsorbed by the vacuum cup cylinder 53.

  Also, as shown in FIG. 3, an XY transport mechanism (sheet metal material transport means) for transporting a hand (support means) 57 in the XY direction is provided at one end of the bed 15 on the back side of the apparatus 11. 59) is attached via a bracket 59a. The work 39 is held so as to be accommodated in the hand 57. When the hand 57 is driven by the XY transport mechanism 59, the work 39 is transported to a predetermined mold position.

  Here, the structure of the XY transport mechanisms 51 and 59 arranged above and below will be described. FIG. 4 is an exploded perspective view of the slide 21, the upper holder plate 23, and the lower holder plate 25.

  The XY transport mechanism 51 includes a first rail portion 61 arranged along the X direction in the drawing, and a second rail portion 63 attached in the Y direction so as to be orthogonal to the first rail portion 61. I have. A movable shaft 65 having a male screw formed on the surface is attached to the inside of the first rail portion 61, and both ends thereof are supported by bearings. One end of the movable shaft 65 is connected to a drive unit (not shown) provided with a stepping motor or the like, and the other end is rotatably supported by the end portion of the first rail portion 61. The movable shaft 65 is engaged with a conveying piece 67 having an internal thread formed therein, and the conveying piece 67 is engaged with the second rail portion 63. On the other hand, a movable shaft 69 having a male screw formed on the surface is attached inside the second rail portion 63, one end of which is connected to a driving portion (not shown) having a stepping motor and the other end is connected to the second rail portion. 63 is rotatably supported at the end of 63. The movable shaft 69 is engaged with a conveying piece 71 having a female screw formed therein, and the conveying piece 71 is connected to the spacer holder 37.

  In the above configuration, when the movable shaft 65 of the first rail portion 61 is rotationally driven by a drive unit (not shown), the transport piece 67 fitted to the movable shaft 65 moves in the X direction and is connected to the transport piece 67. The two rail parts 63 also move in the X direction. Further, when the movable shaft 69 of the second rail portion 63 is rotationally driven by a drive unit (not shown), the transport piece 71 fitted to the movable shaft 69 moves in the Y direction, and the spacer holder 37 connected to the transport piece 71 is also provided. Move in the Y direction. As described above, the XY transport mechanism 51 drives the first rail portion 61 and the second rail portion 63 in the X or Y direction, respectively, so that the spacer holder 37 that holds the spacer 35 is placed on a predetermined mold. Can be transported.

  Note that the drive structure of the XY transport mechanisms 51 and 59 is not limited to the configuration of this embodiment. For example, a combination of a gear and a chain, or a combination of an endless running belt and a pulley may be used. Good.

  Further, the XY transport mechanism 59 that transports the hand 57 holding the work 39 in the X and Y directions is configured in the same manner (description is omitted).

  In the above configuration, the operations of the hydraulic press 19, the XY transport mechanism 51, 59 and the transport mechanism (not shown) are controlled by a microcomputer and a control unit (not shown) provided with a program describing the operation procedure of each part. ing. This control unit selects a predetermined die based on information such as the number of burring holes, hole diameter, and position related to the workpiece to be machined, and uses various information for controlling the operation amount and operation timing as production information. Send to each part.

  Next, a mechanism for discharging the waste residue will be described. Here, the mold 27 will be described as an example, but other molds (not shown) are similarly configured.

  In the piercing burring apparatus 11 of the present embodiment, the piercing process is performed from the lower side to the upper side, and therefore the punched residue 40 does not come out downward. For this reason, as shown in FIG. 1, there is a punching waste container 46 for housing the punching waste 40 generated by the piercing process inside the upper die burring punch 41 and the upper die punch holder 43 constituting the upper die 27a. Is formed. The extracted waste 40 generated by the piercing process is accumulated inside the extracted waste container 46.

  On the other hand, inside the spacer 35, a vacuum cup cylinder (suction means) 53 is provided for sucking the extracted residue 40. The vacuum cup cylinder 53 adsorbs the extracted waste 40 by discharging air and generating a negative pressure. The tip 53a of the vacuum cup cylinder 53 enters the inside of the punched-out container receiving portion 46 during piercing, and when the punched-out waste 40 accommodated inside reaches a predetermined height, the uppermost portion thereof It is fixed at a predetermined position so as to be in contact with and attracted to the punched waste 40. That is, the position of the front end portion 53a is determined such that the uppermost cut residue 40 accommodated by a predetermined height inside the extracted waste accommodating portion 46 when the upper die 27a reaches the bottom dead center during piercing. Is set to abut. Therefore, when the extraction waste 40 accommodated in the extraction waste container 46 does not reach a predetermined height, even if the tip 53a of the vacuum cup cylinder 53 enters the inside of the extraction waste storage portion 46, the removal waste 40 adsorption is not performed.

  The vacuum cup cylinder 53 may always generate a negative pressure, or may generate a negative pressure only during piercing.

  Next, the operation at the time of forming a burring hole in the work 39 by the pierce burring apparatus 11 configured as described above will be described. Here, it is assumed that piercing is performed with the mold 33.

  First, in the standby state, as shown in FIG. 2, the slide 21 is located at the top dead center. In this standby state, the spacer 35 is not in contact with any of the upper molds 27a to 33a, and a predetermined space is formed between each upper mold burring punch 41 and the lower molds 27b to 33b.

  Next, when production information is received from a control unit (not shown), as shown in FIG. 4, the XY transport mechanism 59 drives the hand 57 in the X and Y directions and lowers the work 39 (not shown in FIG. 4). It is conveyed above the mold 33b so that the region to be machined of the work 39 is positioned above the predetermined lower mold 33b. Further, the XY transport mechanism 51 drives the spacer holder 37 in the X and Y directions to transport the spacer 35 above the upper mold 33a. Here, the XY transport mechanism 51 transports the spacer 35 above the upper mold 33a paired with the lower mold 33b previously selected by the XY transport mechanism 59.

  Thus, when the workpiece 39 is transported to a predetermined position by the XY transport mechanism 59 and the spacer 35 is transported to a predetermined position by the XY transport mechanism 51, the hydraulic press 19 is actuated to lower the slide 21, In conjunction with this, the spacer 35 is also lowered. As a result, as shown in the partial cross-sectional view of FIG. 5, pressure is applied only to the upper die 33a facing the spacer 35 and the lower die is formed, and a flange around the hole is formed by the upper die burring punch 41. Piercing is performed by the burring die 49 penetrating from the lower side of the work 39 toward the upper die, and at this time, the punching waste 40 is pulled upward to form a burring hole.

  When the piercing process is completed, the hydraulic press 19 is operated to raise the slide 21, and the spacer 35 is also raised in conjunction with this. As a result, the upper mold 33a pressed by the spacer 35 moves upward by the urging force of the spring 45 and returns to the standby position. By the movement of the upper mold 33a, a space is formed again between the upper mold and the lower mold of each mold, and the work 39 can be conveyed.

  A plurality of types of baffle plates can be manufactured by repeating the above operation according to the hole diameter to form burring holes having a predetermined hole diameter at a predetermined position of the work 39 one by one.

  Here, differences from the conventional apparatus will be described with reference to FIG.

  FIG. 6 is a plan view showing the positional relationship between the lower molds 27b to 33b and the work 39, and shows an example in which the work 39 is arranged right above the lower mold 33b. In this case, the work 39 overlaps not only the lower mold 33b but also the adjacent lower mold 34b in a plane. Therefore, in the conventional apparatus that performs the piercing with the upper die burring die and the lower die burring punch, since the piercing is performed from the upper side to the lower side, the lower die burring punch sinks during processing, as shown in FIG. At a work position, the work 39 is deformed by the lower die 34b. However, in the piercing burring apparatus 11 of this embodiment, since the piercing is performed from the lower mold 33b toward the upper mold 33a, the lower mold 33b does not sink downward at the time of machining, and the workpiece 39 is adjacent. Even when it overlaps with other molds in plan view, the workpiece 39 does not interfere with other molds during processing, so that only necessary portions can be pierced. That is, in this embodiment, since piercing is performed from the lower side to the upper side, the lower die burring die does not sink during processing, and pressure is applied only to the molds involved in the processing, which is unnecessary. Formation of a burring hole in the portion can be prevented.

  Therefore, in the piercing burring apparatus 11 of the present embodiment, it is not necessary to secure the distance between the adjacent molds so that the mold not involved in processing and the workpiece do not interfere with each other, and the distance between the molds is larger than the conventional one. It can be narrowed. As a result, even if the types of burring holes are increased, as shown in FIG. 6, by arranging the molds in a plurality of rows and reducing the distance between the molds, the apparatus shape can be made compact, Since the line layout can be facilitated, the layout efficiency can be improved.

  Therefore, since the molds conventionally arranged in one row can be made into a plurality of rows, the horizontal distance from the shaft 19a of the hydraulic press 19 to the end die can be shortened. Thereby, even when piercing is performed with a die at the end, the influence of the eccentric load acting on the slide 21 can be reduced. This eliminates the need for reinforcement for increasing the apparatus rigidity, and can reduce the equipment cost.

  Next, the discharge of the punched residue 40 will be described.

  In the piercing burring apparatus 11 of the present embodiment, the piercing process is performed from the lower side toward the upper side, and thus the punched residue 40 does not come out downward. For this reason, in this embodiment, the extracted waste 40 is accommodated inside the extracted residue accommodating portion 46, and when a predetermined amount is accumulated, it is adsorbed by the vacuum cup cylinder 53 and discharged to the outside.

  That is, as shown in FIG. 1, when the piercing is performed using the die 27 when the punched waste 40 accumulated in the punched-scrap receiving portion 46 of the die 27 has reached a predetermined height, When the mold 27a reaches the bottom dead center, the distal end 53a of the vacuum cup cylinder 53 provided inside the spacer 35 enters the inside of the extraction waste container 46 and contacts the extraction waste 40 at the top, The extracted residue 40 is adsorbed by a negative pressure. Then, when the piercing process is completed and the spacer 35 moves to the top dead center, the uppermost removal waste 40 moves upward while being adsorbed by the tip 53a of the vacuum cup cylinder 53. Thereafter, the XY transport mechanism 51 is driven to transport the spacer 35 to the standby position indicated by the one-dot chain line in FIG. A chute 55 is provided directly below the standby position, and therefore, when the spacer 35 is transported to the standby position and then the negative pressure is turned off, the debris adsorbed on the tip 53a of the vacuum cup cylinder 53 is removed. 40 can be discharged to the chute 55.

  As described above, when the punched waste 40 accumulated in the punched waste container 46 reaches a predetermined height, the uppermost punched waste 40 is adsorbed to the vacuum cup cylinder 53 during the piercing process, and the spacer 35 is removed. When it returns to the standby position, it is discharged to the chute 55. Therefore, even when piercing is performed from the lower mold 27b toward the upper mold 27a, the extracted waste 40 accumulated in the mold can be reliably discharged to the outside.

  As described above, in the piercing burring apparatus 11 according to the present embodiment, the burring punch is disposed on the upper side and the burring die is disposed on the lower side, and piercing is performed from the lower mold 27b toward the upper mold 27a. For this reason, the lower burring die does not sink during piercing, and pressure is applied only to the mold involved in the machining, so that it is possible to prevent burring holes from being formed in unnecessary portions. For this reason, it is not necessary to ensure the distance between the adjacent molds so that the molds not involved in machining and the workpiece do not interfere with each other, and the distance between the molds can be narrowed as compared with the conventional technique. Therefore, even if the types of burring holes increase, by arranging the dies in a plurality of rows and reducing the distance between the dies, the apparatus shape can be made compact and the line layout can be made easy. Therefore, layout efficiency can be improved (effect of claim 1).

  Further, since the molds conventionally arranged in one row can be arranged in a plurality of rows, the horizontal distance from the shaft 19a of the hydraulic press 19 to the end die can be shortened. As a result, even when piercing is performed with a die at the end, the influence of the eccentric load acting on the slide 21 can be reduced, so that reinforcement for increasing the rigidity of the apparatus is not necessary, and the equipment cost is reduced. (Effect of claim 1).

  Further, since the waste residue 40 accumulated in the die removal waste container 46 is attracted and discharged by the vacuum cup cylinder 53, the waste residue 40 accumulated inside the die is reliably discharged to the outside. (Effect of claim 2).

  In the above-described embodiment, an example in which the molds are arranged in two rows has been described. However, a configuration of three rows or a plurality of rows may be employed.

  In the above-described embodiment, an example in which the XY drive mechanism 51 is driven to convey the spacer 35 to a predetermined mold position has been described. However, a hydraulic press is fixedly disposed on each mold and involved in piercing. Only the hydraulic press on the mold to be operated may be operated. With such a configuration, it is possible to reduce the time for driving the XY drive mechanism 51 and transporting the spacer 35. Further, in this case, the punching waste is processed by, for example, forming a punching hole discharge hole on the side surface of the upper punch holder 43 (FIG. 1), and providing a blowing mechanism by air blow or a plate member sliding mechanism. This can be dealt with by providing a mechanism such as discharging to the outside by extrusion.

FIG. 3 is a front sectional view showing the structure of the upper and lower molds in FIG. 2. The front view of the piercing burring apparatus concerning an Example. FIG. 3 is a right side sectional view of FIG. 2. The exploded perspective view of a slide, an upper holder plate, and a lower holder plate. The fragmentary sectional view of the metallic mold at the time of piercing. The top view which shows the positional relationship of a lower mold | type and a workpiece | work. (A)-(c) is explanatory drawing of a baffle plate. The front view which shows the piercing burring apparatus of a prior art example. The top view which shows the piercing burring apparatus of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Piercing burring device 13 ... Base 15 ... Bed 17 ... Supporting pillar 19 ... Hydraulic press 21 ... Slide 23 ... Upper holder plate 25 ... Lower holder plate 27, 29, 31, 33 ... Mold 27a, 29a, 31a, 33a ... Upper die 27b, 29b, 31b, 33b, 34b ... Lower die 35 ... Spacer 37 ... Spacer holder 39 ... Work 40 ... Drainage 41 ... Upper die burring punch 42 ... Upper die pad 43 ... Upper die holder 44, 45 ... Spring 46 ... Waste container 47 ... Lower die piercing punch 49 ... Lower die burring die 51, 59 ... XY transport mechanism 53 ... Vacuum cup cylinder 53a ... Tip portion 55 ... Chute 57 ... Hand 61 ... First rail portion 63 ... First 2-rail part 65, 69 ... movable shaft 67, 71 ... transport frame

Claims (2)

A piercing burring device for forming a burring hole by piercing at a predetermined position of a sheet metal material (39),
A plurality of molds (27-) configured by a pair of upper molds (27a-) and lower molds (27b-) and arranged in at least one row at a predetermined interval;
Press means (19) for applying pressure to the upper die (27a) to form a burring hole in the sheet metal material (39);
A spacer (35) for transmitting pressure from the pressing means (19) to the upper mold (27a);
Spacer transport means (51) for transporting the spacer (35) to a predetermined upper mold position;
Support means (57) for supporting the sheet metal material (39);
Sheet metal material conveying means (59) for conveying the sheet metal material (39) supported by the support means (57) to a predetermined lower mold position;
The sheet metal material (39) is conveyed to a predetermined lower mold position by the sheet metal material conveying means (59), and the spacer (35) is conveyed to a predetermined upper mold position by the spacer conveying means (51). Then, the pressure from the pressing means (19) is applied to the upper mold (27a) through the spacer (35), and the sheet metal material (39) is moved from the lower mold (27b) side. A piercing burring device (11), wherein a burring hole is formed at a predetermined position of the sheet metal material (39) by piercing toward the upper die (27a). A punched waste container (46) that is formed inside the upper mold (27a) and that accommodates the punched waste (40) generated by piercing;
An adsorbing means (53) provided inside the spacer (35), for adsorbing the extracted dregs accommodated in the extracted dregs accommodating portion (46);
And the uppermost extraction residue (40) accommodated in the extraction residue accommodating portion (46) is adsorbed by the adsorption means (53), and the adsorption means (53) adsorbs the extraction residue (40). In this state, the spacer transporting means (51) is driven to transport the spacer (35) to a predetermined position, whereby the punched waste (40) is discharged from the punched waste container (46). Piercing burring device (11) according to claim 1.

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