KR20210059061A - Punching mold device - Google Patents

Abstract

The present invention relates to a punching mold device with an improved structure, which can divide upper and lower molds for each portion and is improved to have a detachable structure to change a size and a position of a drilling hole drilled in a component which is a workpiece and to transmit uniform pressure toward a punching cylinder even though a hole size is differentiated during punching work, thereby improving durability of the punching cylinder.

Description

Punching mold device {Punching mold device}

The present invention relates to a punching mold apparatus for forming a plurality of holes of various sizes in a panel (workpiece), and in particular, by providing a plurality of punching cylinders corresponding to the hole size of the workpiece, the punching workload is applied to each punching cylinder. It is possible to eliminate the use of large punching cylinders by distributing them, and by improving the upper and lower molds into a partitionable and detachable structure, it is possible to respond to changes in the size and position of holes drilled in the workpiece. will be.

As a conventional prior art related to a punching machine, as disclosed in Korean Patent Publication No. 10-1053228, "Punching Mold Mechanism" (Registration Date: 2011.07.26), a lower mold fixedly installed directly below the upper mold that can be moved up and down. A mechanism for punching a part with: a molding mold provided with a punch holder performing press-molding and release of the part at a lower portion of the upper mold, and having a stripper interposed with a pressing table; A punch installed on the molding mold so as to move up and down, and for cutting and molding parts; A die installed on the upper surface of the lower mold and having a groove for mounting a component; And a fixing guide installed on the side of the die and moving forward and backward to facilitate discharging of the cut part of the part, wherein the die is provided with a fixing base to facilitate fixing by inserting the fixing guide. .

In this case, the upper mold is moved up and down to form a part seated on the lower mold, but if you want to change the punching hole size or position of the part, there is a hassle of having to replace the upper mold and the lower mold. A lot of time and number of workers are required for the work.

As other prior art related to the existing punching machine, as disclosed in Korean Patent Publication No. 10-1125469 No. "Punching Mold" (registration date: 2012.03.03), a seating groove is formed downward in the upper surface, and a discharge hole and a discharge hole are provided. 2 A die with a through hole is formed with a lower mold seated in the seating groove, and a first through hole and a second through hole are formed to communicate with the first through hole and the second through hole. The first and second punches are equipped with a pressing plate that presses and holds the carrier tape when punching the product and conveying holes on the carrier tape, and the first and second punches are provided. A punching mold comprising a punch holder in which a plurality of balls are formed, and a first punch and a second punch for punching a product hole and a receiving hole are mounted on a carrier tape in the first and second punch mounting holes, the A punching protrusion is formed on the lower surface of the punch holder so that the first and second punches are deeply inserted into the first and second punch mounting holes of the punch holder, and a receiving groove for receiving the descending punching protrusion The pressing plate is concave downwardly formed on the upper surface of the pressing plate, and the pressing plate is fastened to the lower mold from the upper surface of the lower mold while covering the lower mold, and presses the die seated in the seating groove downward to fix it.

However, in the existing punch mold, since the upper mold and the lower mold are each formed integrally, there is a limitation that punching can be manufactured only in the form of a part that is punched to be standardized.

In addition, in the process of punching a plurality of holes of different sizes in parts such as sheets and plates, the pressure applied varies according to the size of the holes, so there is a disadvantage that the durability of the punching machine is deteriorated due to variations in the size of the holes and the loads of each part .

In addition, if the size or shape of the punched hole is to be changed to a different one, the entire mold must be replaced, so there is a disadvantage in that an economic burden and a long replacement time are required.

Korean Registered Patent Publication No. 10-1053228 "Punching Mold Mechanism" (Registration Date: 2011.07.26) Korean Registered Patent Publication No. 10-1125469 "Punching mold" (Registration date: 2012.03.03)

The present invention was created to solve the above problems in consideration of the above problems, and its object is to provide a large punching cylinder by providing a plurality of punching cylinders corresponding to the hole size of the workpiece so that the punching workload is distributed to each punching cylinder. The purpose of this is to provide a punching mold device capable of responding to changes in the size and position of holes drilled in the workpiece by improving the upper and lower molds into a partitionable and detachable structure.

The present invention for achieving the above object comprises a mold body in which the upper body is disposed to be spaced apart from the lower body by a connecting rod; A plurality of punching cylinders fixed to be suspended from the lower side of the upper body by means of fixing means provided at the lower side of the upper body; An upper mold fixed to a lower side of the upper body, having at least one protruding hole formed so that the punching rod of each punching cylinder protrudes downward, and detachably divided into a plurality of upper molds; A hoisting platform disposed on the upper side of the lower body and supported by the connecting bar and coupled to the upper and lower parts by an elevating means; A support mounted on the upper side of the lifting platform, the upper surface being spaced apart from the upper side of the lifting platform, and having a discharge hole through which the scrap of the workpiece punched by the upper mold passes; A lower mold in which a through hole is formed so that the scrap of the workpiece punched by the upper mold passes through a plurality of detachably divided and seated portions on the upper side of the pedestal; And clamping means for clamping the edges of both sides of the sheet-shaped workpiece entered between the upper mold and the lower mold.

The clamping means includes a support block supported on both left and right sides of the connecting rod, a moving block sliding in a direction orthogonal to an entry direction of the workpiece to each of the support blocks, and the workpiece to each of the moving blocks. It is composed of a clamping block disposed parallel to the entry direction of the clamping block, and an upper and lower clamping member that is rotatably provided on one side facing each other of the clamping block and clamps and grips both rim ends of the workpiece up and down. When the workpiece enters the space between the upper mold and the lower mold, the upper and lower clamping members are rotated to face each other to clamp and grip both edges of the workpiece.

The fixing means is fixed to the lower side of the upper body and the upper mold is bolted to the lower side, a horizontal connection rod connecting the fixing rod in a horizontal direction, and the punching cylinder is bolted to the lower side while being suspended through the horizontal connection rod. The punching cylinder is bolted detachably to the lower side of the fastener so that the punching rod is stretched and contracted toward the lower side.

A collection tray for collecting the scrap is further provided in the pedestal.

The elevating means is mounted on the bottom of the lower mold and is driven to rotate when external power is applied, a gearbox for converting the rotational force of the elevating motor into an up/down movement force, and an upper portion of the gearbox, It is configured of a lifting shaft that moves up and down with a lower moving force and when the upper end is in close contact with the lower side of the lifting platform during the lifting operation, the lifting platform moves up and down.

The through hole further includes a sleeve member made of a cemented carbide material that is detachably coupled to the inner circumferential edge with a fixing bolt.

In the present invention, the use of a large punching cylinder for punching a plurality of holes at once can be eliminated by providing a plurality of punching cylinders corresponding to the hole size of the workpiece so that the punching workload is distributed to each punching cylinder,

When punching is performed, the punching rod of each punching cylinder can transmit differential pressure according to the size of the holes in the upper and lower molds, thereby increasing the durability of the punching cylinder by distributing the work load generated during the punching operation of the workpiece evenly. It has an advantage that can be made.

Since the present invention is composed of a plurality of divided upper and lower molds, it is possible to perforate a perforated hole in various patterns when punching a workpiece, and to be able to partially replace a worn or damaged area for maintenance. It has the advantage of reducing cost.

The clamping means of the present invention has the advantage that the moving block and the clamping block can move in the lateral direction, so that the clamping can be held regardless of the dimensions of the workpiece.

In addition, since the present invention is a configuration in which the punching cylinder is bolted to the lower side of the fixing means of the fixing means, the punching cylinder is easily combined so that the punching cylinder is suspended from the upper body by using the fixing means, and the tightening state of the bolt is released to each punching cylinder. It is possible to rearrange the arrangement of the 300 to enable punching of a workpiece having a different hole pattern.

The present invention further comprises a sleeve member made of cemented carbide material that is detachably coupled to the inner circumferential rim of the through hole with a fixing bolt, so that when scrap residue is fixed to the inner rim and friction with the punching rod, the fixing bolt is fastened. After releasing the state, the sleeve member can be separated from the through hole to be cleaned or replaced, thereby facilitating maintenance work and reducing cost through partial replacement.

1 is a front view schematically showing the configuration of a punching mold apparatus according to the present invention.
Figure 2 is a side view of Figure 1;
Figure 3 is an exploded perspective view of the present invention upper and lower molds.
Figure 4 is a front view showing the present invention clamping means.
Figure 5 is a state of use of the lifting means showing the lifting operation of the present invention lifting shaft.
6 is a use state diagram schematically showing a punching operation of the workpiece clamped and gripped by the clamping means of the present invention.
Fig. 7 is a perspective view showing a workpiece in which a perforated hole is perforated by a punching operation according to the present invention.

The punching mold apparatus according to the embodiment of the present invention is for punching a plurality of holes 12 having different hole sizes into the workpiece 10 as shown in FIG. 7, and punching a plurality of holes corresponding to the size of the holes 12 It is provided with a cylinder, and it is possible to replace the mold and rearrange the punching cylinder so that the hole punching operation of the workpiece 10 having a different hole pattern is possible.

The punching mold apparatus according to the present invention includes a mold main body 100 in which an upper main body 110 is disposed to be spaced apart from the lower main body 120 by a connecting rod 130 with reference to FIGS. 1 to 7; A plurality of punching cylinders 300 fixed to be suspended from the lower side of the upper body 110 by a fixing means 200 provided at the lower side of the upper body 110; An upper mold 400 fixed to the lower side of the upper body 110 and detachably divided into a plurality of pieces; A lifting platform 510 disposed on the upper side of the lower body 120; A pedestal 520 mounted on the upper side of the lifting platform 510; A lower mold 600 that is detachably divided and seated in a plurality of pieces on the upper side of the pedestal 520; And clamping means 800 for clamping the edges of both sides of the workpiece 10 in the form of a sheet entered between the upper mold 400 and the lower mold 600.

1 and 2, the mold body 100 is divided into an upper body 110, a lower body 120, and a connecting rod 130.

The connecting rod 130 connects each corner portion of the upper and lower bodies 110 and 120 in the height direction.

The punching cylinder is coupled to the lower side of the upper body 110 so that the punching cylinder is suspended at a fixed height by the fixing means 200.

Referring to Figure 1, the fixing means 200 is fixed to the lower side of the upper body 110, and the upper mold 400 is bolted to the lower side of the fixing base 210, and the fixing base 210 in a horizontal direction. It is composed of a horizontal connecting rod 220 connected to each other, and a fastener 230 which penetrates and hangs through the horizontal connecting rod 220 and is coupled to the punching cylinder 300 with a bolt at the lower side.

The horizontal connecting rod 220 is disposed at an approximately mid-height of the fixing table 210, and the divided upper mold 400 is coupled to the lower side of the fixing tool 230 with bolts, respectively.

The fixing means 200 is bolted to the punching cylinder 300 is detachably attached to the lower side of the fastener 230 so that the punching rod 310 is extended and contracted toward the lower side.

As shown in FIG. 3, the upper mold 400 has at least one protruding hole 410 so that the punching rod 310 of each punching cylinder 300 protrudes downward.

The protruding hole 410 is formed in a structure having the same hole size for each of the divided upper molds 400, different from each other, or having a different hole position.

The pedestal 520 having a die function has a structure in which a discharge hole is formed so that the scrap 10a of the workpiece 10 punched by the upper mold 400 passes.

The pedestal 520 is provided with a space portion between the upper and lower portions, so that the upper surface is disposed to be spaced apart from the upper side of the lifting platform 510.

A collection tray 910 is further provided in the space in which the scrap 10a of the workpiece 10 is dropped and collected during the punching operation of the punching cylinder 300.

The lower mold 600 has a structure in which a through hole 610 is formed so that the scrap 10a of the workpiece 10 punched by the upper mold 400 passes through, as shown in FIG. 3. .

The through hole 610 is formed in a structure in which a hole size is different for each divided lower mold 600 or a hole position is different.

Referring to FIG. 6, the through hole further includes a sleeve member 620 made of a cemented carbide material that is detachably coupled with a fixing bolt 625 to the edge of the inner circumferential surface.

The sleeve member 620 may be separated from the through hole to be cleaned or replaced after releasing the fastening state of the fixing bolt 625 when friction with the punching rod and scrap scraps are fixed to the inner rim end. As a result, maintenance work is easy and the cost can be reduced through replacement of some parts.

The protruding hole 410 and the through hole 610 are arranged in the same size and at the same position on a vertical line, and when the perforation hole 12 to be drilled in the workpiece 10 is changed, the upper and lower molds corresponding to each other Replace it with (400,600).

As shown in FIG. 4, the clamping means 800 includes support blocks 810 supported on both left and right sides of the connecting rod 130, and the workpiece 10 on each of the support blocks 810. A movable block 820 that slides in a direction orthogonal to the entry direction of the movable block 820, a clamping block 830 disposed in the respective movable blocks 820 parallel to the entry direction of the workpiece 10, and the clamping block Consists of upper and lower clamping members 842 and 844 which are rotatably provided on one side of the 830 facing each other to clamp and hold both rim ends of the workpiece 10 upward and downward.

When the workpiece 10 enters the space between the upper mold 400 and the lower mold 600, the clamping means 800 rotates so that the upper and lower clamping members 842 and 844 face each other. It is designed to clamp and grip the edges of both sides of the workpiece (10).

When the upper and lower clamping members 842 and 844 rotate in a forward direction facing each other around a hinge axis, as shown in FIG. 4, the upper and lower clamping members 842 and 844 clamp and grip the edge of the workpiece 10, and vice versa. When rotated to, the function of releasing the clamping state with the workpiece 10 is performed.

The upper and lower clamping members 842 and 844 are rotated in forward and reverse directions by a rotary motor (not shown).

The clamping block 830 is integrally connected to be interlocked with the movable block 820, and the movable block 820 slides with respect to the support block 810 in the left and right directions in FIG. 2 Has.

The movable block 820 and the clamping block 830 are not shown in the drawing, but the screw shaft rotationally driven by the movable motor is moved to the movable block 820 in a screw fastening method, or left in a rack and pinion method. ,It slides in the right direction.

Accordingly, since the movable block 820 and the clamping block 830 can move in the lateral direction, they have the advantage of being able to clamp and hold regardless of the dimensions of the workpiece 10.

The lifting platform 510 is supported by the connecting rod 130 and can be moved up and down by the lifting shaft 730 of the lifting means 700.

The lifting means 700 is a lifting motor 710 mounted on the bottom surface of the lower mold 600, as shown in Figures 1 and 5, and the lifting shaft 730 by the rotational force of the lifting motor 710 ) Up and down the gearbox 720, and the gearbox 720 for raising and lowering in the vertical height direction, and the lifting shaft 730 that pushes the lifting platform 510 upwards and upwards during the ascending operation. ).

The lifting motor 710 adopts a servo motor capable of driving forward and reverse rotation.

The lifting platform 510 descends while being supported by the connecting rod 130 by its own weight during the descending operation of the lifting shaft 730.

As described above, when the workpiece 10 (sheet, metal plate, etc.) in the form of a plate enters into the space between the upper mold 400 and the lower mold 600, the upper and lower clamping of the clamping means 800 The members 842 and 844 are rotated in the forward direction to grip the upper and lower edges of the left and right sides of the workpiece 10.

In the lifting means 700, the lifting shaft 730 rises from the lower body 120 toward the lower side of the workpiece 10, and the lifting shaft 730 which is operated ascending moves the lower side of the lifting platform 510. As it is pushed up, the pedestal 520 and the lower mold 600 are raised toward the workpiece 10.

When the lower mold 600 is raised, the upper side of each of the divided lower molds 600 is supported by being in contact with the lower side of the workpiece 10.

When the punching rod 310 of the punching cylinder 300 is lowered, the punching rod 310 passes through the protruding hole 410 of the upper mold 400 and the workpiece 10 supported by the lower mold 600 While penetrating through, a portion of the pierced workpiece 10 is generated as a scrap 10a.

The scrap 10a passes through the through hole 610 of the lower mold 600 and the discharge hole of the pedestal 520 and falls into the space between the upper and lower portions of the pedestal 520, or the collection tray When 910 is provided, it is collected in the collection tray 910.

During the punching operation, the punching rod 310 of each punching cylinder 300 can transmit differential pressure according to the hole size of the upper and lower molds 400 and 600, thereby occurring during the punching operation of the workpiece 10 It has an advantage of evenly distributing the resulting work load to improve the durability of the punching cylinder 300.

Since the present invention is composed of a plurality of divided upper and lower molds (400,600), as shown in Fig.7, it is possible to perforate the perforated holes 12 in various patterns during the punching operation of the workpiece 10 In addition, it is possible to partially replace a worn or damaged area, thereby reducing maintenance costs.

In addition, the present invention is a configuration in which the punching cylinder 300 is bolted to the lower side of the fastener 230 of the fixing means 200, so that the punching cylinder 300 is suspended from the upper body 110 by using the fixing means 200. In addition to the simple coupling so as to be removed, it is possible to rearrange the arrangement state of each punching cylinder 300 by releasing the fastening state of the bolt, thereby enabling the punching operation of a workpiece having a different hole pattern.

10: workpiece 10a: scrap
12: hole 100: mold body
110: upper body 120: lower body
130: connecting rod 200: fixing means
210: fixing rod 220: horizontal connecting rod
230: fixture 300: punching cylinder
310: punching rod 400: upper mold
410: haunting hole 510: lifting platform
520: pedestal 600: lower mold
610: through hole 620: sleeve member
625: fixing bolt 700: lifting means
710: elevating motor 720: gearbox
730: lifting shaft 800: clamping means
810: support block 820: moving block
830: clamping block 842,844: upper and lower clamping members
910: collection tray

Claims (6)

A mold body 100 in which the upper body 110 is disposed to be spaced apart from the lower body 120 by the connecting rod 130;
A plurality of punching cylinders 300 fixed to be suspended from a lower side of the upper body 110 by a fixing means 200 provided at a lower side of the upper body 110;
It is fixed to the lower side of the upper body 110, at least one protruding hole 410 is formed so that the punching rod 310 of each punching cylinder 300 protrudes downward, and the upper part is detachably divided into a plurality of A mold 400;
A lifting platform 510 disposed on the upper side of the lower body 120 and supported by the connecting rod 130 so as to be lifted up and down by the lifting means 700;
It is mounted on the upper side of the lift table 510, the upper surface is arranged to be spaced apart from the upper side of the lift table 510, and a discharge hole is formed so that the scrap 10a of the workpiece 10 punched by the upper mold 400 passes through. A pedestal 520;
A through hole 610 is formed so that the scrap 10a of the workpiece 10 punched by the upper mold 400 passes through a plurality of detachably divided pieces on the upper side of the pedestal 520 Lower mold 600; And
A punching mold apparatus comprising: clamping means (800) for clamping the edges of both sides of the work piece 10 in the form of a sheet entered between the upper mold (400) and the lower mold (600). The method according to claim 1,
The clamping means 800 includes support blocks 810 supported on both left and right sides of the connecting rod 130, respectively,
A moving block 820 that slides in a direction orthogonal to the entry direction of the workpiece 10 on each of the support blocks 810,
A clamping block 830 disposed in each of the movable blocks 820 in parallel with the entry direction of the workpiece 10,
Consisting of upper and lower clamping members 842 and 844 which are rotatably provided on one side facing each other of the clamping block 830 and clamp and hold both rim ends of the workpiece 10 up and down,
When the workpiece 10 enters the space between the upper mold 400 and the lower mold 600, the upper and lower clamping members 842 and 844 are rotated to face each other, so that the edges of both sides of the workpiece 10 Punching mold apparatus, characterized in that the clamping and gripping. The method according to claim 1,
The fixing means 200 is fixed to the lower side of the upper body 110 and the upper mold 400 is bolted to the lower side of the fixing base 210,
A horizontal connecting rod 220 connecting the fixing table 210 in a horizontal direction,
It is provided with a fastener 230 that penetrates and hangs through the horizontal connecting rod 220 and is coupled to the punching cylinder 300 by bolts on the lower side,
A punching mold apparatus, characterized in that the punching cylinder 300 is bolted detachably to the lower side of the fixture 230 so that the punching rod 310 is extended and contracted toward the lower side. The method according to claim 1,
A punching mold apparatus, characterized in that further comprising a collection tray (910) for collecting the scrap (10a) in the pedestal (520). The method according to claim 1,
The elevating means 700 is mounted on the bottom surface of the lower mold 600 and the elevating motor 710 is driven to rotate as an external power is applied,
A gearbox 720 that converts the rotational force of the elevating motor 710 into an up and down movement force,
It is characterized in that consisting of a lifting shaft 730 that moves up and down by the vertical movement force of the gearbox 720, and when the upper end is in close contact with the lower side of the lifting platform 510 during the ascending operation, thereby lifting the lifting platform 510 Punching mold device. The method according to claim 1,
The through hole 610 further comprises a sleeve member 620 made of a cemented carbide material that is detachably coupled to the inner circumferential edge with a fixing bolt 625.

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