JP6321313B1 - Cam device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cam device that can be easily assembled and disassembled. The present invention relates to a cam holder that is attached to a mold for pressing a workpiece by driving one of a first mold and a second mold in a pressing direction and is attached to the first mold. A machining tool for machining a workpiece can be installed, and a cam slider that is slidably attached to a cam holder in a predetermined reciprocating direction, and a cam that is attached to a second mold and drives the cam slider in the machining direction A cam slider having a plurality of slider portions arranged at predetermined intervals in the reciprocating direction, and the cam holder extends in the reciprocating direction and can be guided in the reciprocating direction. A groove portion that accommodates the plurality of slider portions, a holding portion that contacts the plurality of sliders and holds the plurality of sliders in the groove portion, and at least one of the plurality of sliders slides at a predetermined position. And at least one passage hole that can pass in a direction perpendicular to the direction. [Selection] Figure 1

Description

  The present invention relates to a cam device capable of facilitating disassembly / assembly work.

  Large metal plates such as automobile bodies are press-molded with a lower fixed mold and an upper movable mold. At the same time as the press molding, a cam device that can be installed in a mold is used to make a hole in the side surface of the press-molded product or to bend the edge.

  For example, the cam device can be installed with a cam holder attached to the upper die, a machining tool for machining the workpiece, a cam slider slidably attached to the cam holder, and attached to the lower die to drive the cam slider in the machining direction. A cam driver.

  In a cam structure that uses an upper plate with sliding surfaces on both sides, disassembling and assembling the cam involves inserting and removing the cam slider from the rear of the cam holder. However, a long cam holder requires a large rear space, which is inferior in workability, and may restrict the layout of the cam device on the mold. Moreover, since the cam slider is inserted from a floating state, the workability is difficult.

  Patent Document 1 discloses a cam unit having a T-shaped channel having an opening through which a T-head can be inserted at an intermediate portion and one end.

Japanese Patent No. 5243039

  However, the cam unit of Patent Document 1 shows an engagement structure between a cam driver and a cam slide, and does not show an engagement structure between a cam holder and a cam slider. In addition, the T-head and T-groove structure of Patent Document 1 is a structure for forced cam return, and is not a structure for facilitating insertion / removal of the cam slider.

  The present invention has been made to solve such a conventional problem, and it is an object of the present invention to provide a cam device capable of facilitating disassembly / assembly work.

According to the present invention, either a first mold or a second mold is attached to a mold for pressing a workpiece by driving in the pressing direction, a cam holder attached to the first mold, and a workpiece is processed. A cam slider that is slidably attached to the cam holder in a predetermined reciprocating direction, and a cam driver that is attached to the second mold and drives the cam slider in the machining direction. The cam slider has a plurality of slider portions arranged at predetermined intervals in the reciprocating motion direction, and the cam holder extends in the reciprocating motion direction and can be guided in the reciprocating motion direction. a groove which accommodates a holding portion for holding a plurality of the slider portion in the groove in contact with the plurality of slider parts equivalent to a predetermined position, at least one reciprocating motion direction of the plurality of slider parts Passable in a direction perpendicular, and at least one through hole portion.

  According to the cam device of the present invention, disassembly / assembly work is facilitated.

It is a perspective view which shows the cam apparatus of embodiment. It is a figure which shows the cam holder of embodiment. It is a figure which shows the cam slider of embodiment. It is AA sectional drawing of FIG. It is BB partial sectional drawing of FIG. It is a figure which shows the cam slider and cam holder at the time of decomposition | disassembly and assembly.

  Hereinafter, the cam apparatus which is embodiment is demonstrated in detail with reference to figures. In addition, although the suspension cam device is described in the embodiment, the type of the cam device is not limited to this, and may be a lower cam device, for example.

  Drawing 1 is a figure showing cam device 1 of an embodiment. 1, 4, and 5 show the cam device when assembly is completed and installed in a mold.

  As shown in FIG. 1, a cam device 1 according to an embodiment includes a cam holder 100 fixed to a movable mold (upper mold, not shown), a slidably supported by the cam holder 100, and a return direction by an elastic member 208. The cam slider 200 is urged to reciprocate in the reciprocating direction (arrow B in the drawing) with a predetermined stroke, and a processing tool (not shown) is attached to the side surface in the processing direction, and a fixed mold (lower die, not shown) ) And a cam driver 300 for driving the cam slider 200 in a predetermined reciprocating direction (arrow B in the figure).

  FIG. 2 is a diagram illustrating the cam holder of the embodiment. The cam holder 100 has a groove 101 b having a substantially concave cross section that extends in the reciprocating direction of the cam slider 200. Upper plates 102 to 104 are attached to the upper surface 101a of the groove 101b so as to partially close the groove from both sides of the groove 101b so that there is a gap in which the cam slider 200 can reciprocate. The gaps between the upper plates 102 and 103 and the gaps between the upper plates 104 and 105 are intervals through which protrusions 203 and 204 described later can pass.

  The upper plate 102 has an L-shaped notch 102a, the upper plate 103 has an L-shaped notch 103a, and the upper plate 104 has an L-shaped notch 104a. 105 has an L-shaped notch 105a. These L-shaped notches 102 a to 104 a are arranged so as to be four corners, thereby forming a rectangular passage hole 107. Here, the length of the passage hole 107 in the reciprocating direction of the cam slider 200 is l1, and the width is w1.

  In the embodiment, both surfaces of the upper plates 102 to 104 are sliding surfaces.

  The stopper 106 is provided at one end of the groove 101b. Since the configuration of the other cam holder 100 is the same as the conventional one, the description thereof is omitted.

  FIG. 3 is a diagram illustrating the cam slider of the embodiment. The cam slider 200 has a sliding surface 207 that is a sliding surface with the upper plates 102 to 104 of the cam holder 100. Protrusions 203 and 204 having substantially rectangular parallelepipeds are provided at substantially both ends of the sliding surface 207 in the reciprocating direction of the cam slider 200. The protrusions 203 and 204 are provided on the sliding surface 207 at the center in the width direction. On the projection 203, a lower slider 201 having a substantially rectangular parallelepiped width larger than the width of the projection 203 is provided. A substantially rectangular parallelepiped lower slider 202 having a width larger than the width of the protrusion 204 is provided on the protrusion 204.

  In the embodiment, the protrusion 203 and the protrusion 204 have the same shape, but may have different shapes.

  In the embodiment, the length of the substantially cuboid lower sliders 201 and 202 in the reciprocating direction of the cam slider 200 is l2, and the width is w2. In the embodiment, the length l 1 of the passage hole 107 is larger than the length l 2 of the lower sliders 201 and 202, and the width w 1 of the passage hole 107 is larger than the width w 2 of the lower sliders 201 and 202. Due to these dimensional relationships, the lower slider 201 can pass through the passage hole 107 in the direction C of FIG. In the embodiment, the width w2 of the lower sliders 201 and 202 is a width that allows the cam slider 200 to be guided in the reciprocating direction of the cam slider 200 by the groove 101b.

  In the embodiment, the lower slider 201 and the lower slider 202 have the same shape, but may have different shapes.

  Since the configuration of the other cam slider 200 such as the sliding portion 205 and the tool mounting portion 206 is the same as the conventional one, the description thereof is omitted.

  4 is a cross-sectional view taken along line AA in FIG. 4 is a cross-sectional view of the cam device 1 cut in the X direction in the drawing at the center position in the Y direction in FIG. FIG. 5 is a partial cross-sectional view taken along the line BB of FIG.

  As can be seen from FIGS. 4 and 5, the lower surface 201 a of the lower slider 201 contacts the upper surface 102 c of the upper plate 102 and the upper surface 103 c of the upper plate 103. Thereby, the downward movement of the lower slider 201 is restricted.

  Both side surfaces of the lower slider 201 are slidably fitted into the groove 101b. As a result, the lateral movement of the lower slider 201 is restricted. The lower restriction and the lateral restriction of the lower slider 202 are the same as those of the lower slider 201. Thus, by restricting the lower sliders 201 and 202, the cam slider 200 can reciprocate in a certain sliding direction with respect to the cam holder 100, and this is the reciprocating direction of the cam slider 200.

  FIG. 6 is a view showing the cam slider and the cam holder at the disassembly / assembly position of the cam device.

  Conventionally, in order to remove the cam slider 200 from the cam holder 100, after removing the stopper 106, it has been necessary to move the cam slider 200 by the length of l2 in the figure, and accordingly, space is required (in the figure). D). On the other hand, in the cam device of the embodiment, the lower slider 201 comes out from the passage hole 107 in the direction C in the figure, so that it can be disassembled and assembled by moving l1 in the figure. For this reason, the rear space of the cam holder 100 can be reduced by l 2 -l 1.

  Further, although the cam slider 200 is heavy, in the embodiment, since the lower slider is divided into front and rear, the cam slider 200 can be inserted / removed in the state where it is always placed on the upper plates 104 and 105 near the center of gravity during disassembly and assembly. Therefore, workability is improved.

  In the embodiment, the example in which the lower slider is two has been described. However, the present invention is not limited to this example, and the present invention can be applied to a case where the cam holder becomes longer and the lower slider becomes three or more. In that case, the number of passage holes may be one less than the number of lower sliders or the same as the number of lower sliders. In this case, the pitch of the passage holes may be the same as that of the lower slider.

  As described above, according to the cam device of the embodiment, the disassembly / assembly work is facilitated.

100: Cam holder 101b: Grooves 102 to 104: Upper plate 107: Passing hole 200: Cam slider 201, 202: Lower slider 203, 204: Projection 300: Cam driver

Claims (3)

One of the first mold and the second mold is attached to a mold for pressing the workpiece by driving in the pressing direction, a cam holder attached to the first mold, and a process for processing the workpiece A tool can be installed, and a cam slider attached to the cam holder so as to be slidable in a predetermined reciprocating direction; a cam driver attached to the second mold and driving the cam slider in the processing direction; A cam device having
The cam slider is
A plurality of slider portions arranged at predetermined intervals in the reciprocating direction;
The cam holder is
A groove portion that extends in the reciprocating motion direction and accommodates the plurality of slider portions so as to be guided in the reciprocating motion direction;
A holding portion for holding the plurality of slider parts in said groove in contact with the plurality of slider parts,
A cam device having, at a predetermined position, at least one passage hole portion through which at least one of the plurality of slider portions can pass in a direction perpendicular to the reciprocating direction.   The cam apparatus according to claim 1, wherein the passage hole portion is provided substantially in the middle of the reciprocating direction of the groove portion. The holding part is a plurality of plates attached to both sides of the groove part,
The cam device according to claim 1, wherein the passage hole portion is formed by a combination of notches of a plurality of plates attached to both sides of the groove portion.