JPH0244888Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is designed to bend a workpiece plate material such as a metal side plate used for a wall panel or a cabinet according to the left and right width dimensions of the workpiece plate material. hand,
This relates to the structure of a mold that can change the width dimension.

[Prior art and its problems] After forming side ribs 2, 2 by bending the left and right edges of a workpiece plate 1, which is rectangular in plan view and used for wall panels, cabinets, etc., to a cross section of approximately 90 degrees. When bending the side edges 3 perpendicular to the ribs 2, 2 at 90 degrees, a mold with a width (l) that matches the distance between the inner surfaces of the ribs 2, 2 on the left and right sides is used. As a means of selectively adjusting the width of the mold according to the dimensions of the bending part, the prior art Japanese Patent Publication No. 16203/1983 discloses that the mold is made of multiple thin pieces of width. an accommodative group;
It is composed of a group of a plurality of divided molds with a thick width dimension and a pair of left and right end molds sandwiching these, and the adjustable mold and the divided molds are fitted onto a horizontal shaft provided at the rear of the upper mold body. It is attached reversibly to the lower part of the upper mold body, and by reversing the desired number of adjustable molds and split molds approximately 180 degrees, the remaining molds are pulled out from the bottom surface of the upper mold body backwards, and then the remaining molds are removed from the pair of left and right ends. It is disclosed that the mold is configured to be made into a mold having a predetermined width dimension by sliding and gathering along the axis of the horizontal axis in the mold.

According to this configuration, the width dimension of the mold can be adjusted by adding the sum of the large width dimension of the split mold multiplied by the number of extracted sheets and the small width dimension of the adjustable mold multiplied by the number of extracted sheets. It is possible to adjust the width dimension step by step for each so-called unit width dimension, but the extracted adjustable mold must be held in position on the horizontal axis located at the rear of the mold. First, there were problems in that extra space was required for this purpose, and when there were a large number of adjustable molds, the mechanism for maintaining the posture became complicated.

The present invention aims to solve these problems.

[Means for solving problems]

Therefore, in the present invention, in a bending mold whose width can be adjusted according to the width of the workpiece plate, a plurality of molds are slidably fitted along the axis of the horizontal axis, and each mold A longitudinal molding edge is integrally formed on one side along the axial direction, and a mating molding is formed on the side surface in the direction perpendicular to the horizontal axis of one of the two adjacent molds. A recess is formed which is open toward the side surface of the mold and which is open toward the molding edge, and a transmission gear rotatably driven by a driving means from the outside is fitted into the recess so as to be rotatable about the horizontal axis. A blade mold having the same side surface shape as the molded edge is housed in a recess on the outer periphery of the transmission gear, and the blade mold is rotatable about a support shaft parallel to the horizontal axis and along its axis. The blade is provided so as to be biased to protrude toward the side surface of the other mold, and a pinion that is constantly engaged with the transmission gear is provided on the inner surface of the base of the blade mold.

[Functions and effects of the invention]

In the present invention, a transmission gear is installed in a recess formed on one side of one of two adjacent molds out of a plurality of molds that are slidably fitted on the horizontal shaft. Since the blade mold and pinion are housed, the width of the mold can be shortened by bringing the sides of adjacent molds closer together while the blade mold is stored in the recess of the mold. When the width of the mold is shortened in this way, the blade mold is housed within the mold, so the mold does not become bulky.

Then, an appropriate angle is set between two adjacent molds.
When the space is left open, the blade protrudes along the axis of the spindle toward the side of the opposing mold, and at that time, the pinion provided at the base of the blade also meshes with the transmission gear. Move by sliding. In this state,
When the transmission gear is rotated by an external drive means, the blade protrudes from the gap between the two molds in accordance with the rotation of the pinion. Therefore, the width of the mold can be increased by the width of the protruding blade.

As described above, according to the present invention, the blade die for which the width dimension of the mold should be adjusted can be stored in the recess on one side of the mold, which is particularly useful for work with a short width dimension of the mold that does not require a blade die. In some cases, the presence of the blade shape does not get in the way and has the remarkable effect of making it more compact.

〔Example〕

Next, to explain the embodiment of the present invention, the first embodiment
Reference numeral 4 in the figure indicates a mold as an upper mold in a press machine. It consists of a large number of molds 7 that are movably fitted into each mold, and blade molds 9 and 9' that are housed in recesses 8 formed in the side surfaces 7a of each of the molds 7 in a direction perpendicular to the horizontal axis 6. As shown in FIG. 3, molding edges 10, 10' having an appropriate cross-sectional shape are integrally molded on one side of the outer peripheral portion of the mold 7 along the longitudinal direction of the horizontal axis 6. Upper frame 11 that can be raised and lowered
At the same time, the mold 4 is lowered to sandwich the workpiece 1 on the table 12, which is the lower mold, and the edge bending die 13, which can be raised and lowered at the front end of the table 12, is raised to bend the side of the workpiece 1. The edge 3 can be bent into a predetermined shape.

Each mold 7 has a shaft hole 14 through which the horizontal shaft 6 passes.
are respectively bored and are only slidably movable along a key 15 attached to the horizontal shaft 6.

As shown in FIGS. 1 and 3, each mold 7 has a block shape with a width dimension (a) and a height dimension (H1) along the axis of the horizontal axis 6, and the front lower end and rear surface of the mold 7 are The upper end of the side edge 3 of the workpiece plate 1 is
forming edges 1 for forming predetermined bent edges on each
0 and 10' are integrally formed. Note that the end die 16 having the width dimension (a') is fixed in position with respect to the horizontal shaft 6 by bolts or the like, and has a forming edge similar to the forming die 7.

Although FIGS. 2 to 4 disclose the structure between the end side 16 and the mold 7, it should be understood that the same applies between two adjacent molds 7, 7'.

A recess 8 formed in the side surface 7a of the mold 7 in a direction perpendicular to the horizontal axis 6 is open toward the side surface of the adjacent mold 7 (end mold 16), as shown in FIGS. 2 and 3. At the same time, a portion is opened toward the front and rear surfaces of the mold 7,
The other portions are the step portions 17 that can come into close contact with the side surfaces of the adjacent molds 7 (end molds 16) in the shaded areas in FIG. A transmission gear 18 having a width (b) that is rotatably fitted to the horizontal shaft 6 is housed in the center of the recess 8, and a recess in the outer periphery of the transmission gear 18 Support shafts 19, 19 are disposed in parallel to the horizontal shaft 6 adjacent to the molded edges 10, 10' at the upper and lower positions, and the base end of each support shaft 19 is screwed.

A blade type 9, 9' having a pinion 20 integrally fixed to the base thereof is fitted into each of the support shafts 19 so as to be rotatable and slidable in the axial direction. It is urged to protrude toward the mold 7 (end mold 16).

The width dimension (d) of the pinion 20 is the width dimension (b) of the transmission gear 18 and the width dimension (c) of the blade 9.
Therefore, each blade type 9, 9'
The transmission gear 18 and pinion 20 are always in mesh even when the pinion 20 is in a protruding state.

Reference numeral 22 indicates adjacent molds 7, 7 (end mold 1
6) biasing springs 2 biased toward each other;
3, and the head of each connecting bolt 22 is fitted into the large diameter portion 24' of the through hole 24 in the mating mold.

Reference numeral 25 denotes the adjacent mold 7
The blade molds 9 and 9', which are protruding from the molding edge 10 or 10' of the mold 7, can be fixed in position by a connecting pin provided on the end mold 16 so as to be freely retractable.

Reference numeral 26 denotes a drive means for rotationally driving the transmission gear 18, and a frame 28 equipped with a drive gear 27 driven by a power source (not shown) is inserted into the mold 7.
It is disposed so as to be movable back and forth toward the transmission gear 18 from the rear surface, and when the drive gear 27 and the transmission gear 18 are rotated in the direction opposite to the arrow A while being engaged, the blade die 9 is moved through the pinions 20, 20. , 9' are rotated so that they are aligned with the mold edges 10, 10', respectively,
stand out.

The left and right longitudinal guide rails 31 arranged on the lower surface of the upper frame 11 fit into the grooves 29 on the upper surface of the mold 7 and can be slidably guided.

Further, reference numeral 30 is a ring-shaped hydraulic cylinder for setting the mold 7 in the direction of the end mold 16.

In this configuration, when the cutting dies 9 and 9' are housed in the recess 8 of the forming die 7 (the dotted line in FIG. 3), the sides of the adjacent forming dies 7 and 7 and the end die 16 are in close contact with each other. Therefore, the width of the mold 4 can be set as the sum of the width of the end mold 16 and the width of the mold 7 multiplied by the number of molds (see Fig. 1 and (See Figure 2).

Then, when an appropriate distance is left between adjacent molds 7, springs 21 on each support shaft 19
The urging force causes the pinion 20 to slide, so that the blade dies 9 and 9' in the recess 8 each protrude in the side direction of the mating mold 7 (end die 16).

In this state, when the drive gear 27 of the drive means 26 is engaged with the tooth surface of the transmission gear 18 and driven, the transmission gear 18 rotates in the direction of arrow A, and each blade shape is 9 and 9' protrude so as to be parallel to the molding edges 10 and 10' of the mold 7 (see the two-dot chain line in FIG. 3).

In this way, all the molds 7 are connected to the end mold 16 with the blades 9, 9' protruding from the sides of the mold 7.
When pressed in the direction of , the total width of the mold 4 is extended by the width (c) of the blade 9.

In this way, when the overall width of the mold 4 is shortened, the blades 9 and 9' are housed in the recess 8 of the mold, compared to the conventional case in which the blades are taken out outside. It becomes compact.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a front view of the device, Fig. 2 is an enlarged plan view, Fig. 3 is a cross-sectional side view taken from the side shown in Fig. 2, and Fig. 4 shows a device with the blade protruding. FIG. 1... Work plate material, 2, 2... Side rib, 3...
Side edge, 4... Mold, 5, 5... Arm, 6... Horizontal shaft, 7... Molding die, 8... Recess, 9, 9'... Blade mold, 10, 10'... ...Molded edge, 11...Top frame, 1
2...Table, 13...Edge bending die, 15...Key, 16...End die, 17...Step, 18...Transmission gear, 19...Spindle, 20...Pinion, 22 …
... Connection bolt, 21 ... Spring, 23 ... Biasing spring, 24 ... Through hole, 26 ... Drive means, 27 ...
...Drive gear, 30...Guide rail.

Claims (1)

[Scope of utility model registration request] In a bending mold whose width can be adjusted according to the width of the workpiece, a plurality of molds are fitted on a horizontal axis so as to be slidable along the axis, and one side of each mold has a A longitudinal molding edge is integrally formed along the axial direction, and a side surface in a direction perpendicular to the horizontal axis of one of the two adjacent molds has a molding edge facing toward the side surface of the mating mold. forming a recess that is once open and opening toward the molding edge; a transmission gear rotatably driven by a driving means from the outside is fitted in the recess so as to be rotatable about the horizontal shaft; A blade mold having the same side surface shape as the molding edge is housed in a recess on the outer periphery of the transmission gear, and the blade mold is rotatable about a support shaft parallel to the horizontal axis and is molded along the axis of the other molding edge. 1. A bending mold, characterized in that a pinion is provided on the inner surface of the base of the blade die so as to protrude toward the side surface of the die, and is constantly engaged with the transmission gear.