Press device

Abstract

To provide a press device which facilitates positioning in an advancing / retracting direction of a guide member with respect to a fixed mold.SOLUTION: A press device includes a lower mold 20 having a die 22, an upper mold 30 which is liftably provided and has a punch 32 press-working workpiece W by cooperation with the die 22, and a first guide member 40. The first guide member 40 has a guide part 41 which is positioned on the upstream side of the lower mold 20, and is brought into contact with the workpiece W in a vertical direction Z and thereby guides conveyance of the workpiece W, and a lower surface brought into contact with the upper surface 21a of the die plate 21. The first guide member 40 is mounted on the lower mold 20 in a state in which the lower surface of the first guide member 40 is brought into contact with the upper surface 21a of the die plate 21.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a press apparatus. [Background technology]

[0002] Patent Document 1 describes a press processing device. The press processing device described in Patent Document 1 includes a lower die having a die, an upper die that is arranged to be able to rise and fall, and a work guide that guides a strip-shaped workpiece between the lower die and the upper die. The lower die has a die plate to which the die is fixed. The upper die has a punch that presses the workpiece in cooperation with the die. The work guide is fixed to the die plate so as to be located above the die plate via an attachment member attached to the side surface of the die plate. The work guide is provided with two guide grooves that slidably guide both ends of the workpiece in the width direction from above and below. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-308996 Summary of the Invention [Problem to be solved by the invention]

[0004] In the press working device described in Patent Document 1, the work guide is attached to the side of the die plate via an attachment member. Therefore, there is a risk of the attachment member being misaligned in the vertical direction relative to the die plate, and the work guide being misaligned in the vertical direction relative to the attachment member. As a result, it is time-consuming to adjust the vertical position of the work guide. [Means for solving the problem]

[0005] A press device for solving the above problem comprises a fixed mold having a die, a movable mold having a punch that is movable toward and away from the fixed mold and presses a workpiece in cooperation with the die, and a guide member that is located upstream of the fixed mold in the conveying direction of the workpiece and contacts the workpiece in the moving direction of the movable mold to guide the conveying of the workpiece, and has an abutment portion that abuts against a mounting surface of the fixed mold that faces the movable mold, and the guide member is attached to the fixed mold with the abutment portion abutting against the mounting surface.

[0006] According to this configuration, the workpiece is transported between the fixed mold and the movable mold with its movement in the forward / backward direction restricted by the guide member. This guides the movement of the workpiece along the transport direction. The guide member is attached to the fixed mold with the contact portion in contact with the mounting surface of the fixed mold. Therefore, the accuracy of the mounting position of the guide member in the forward / backward direction relative to the fixed mold can be increased simply by increasing the machining accuracy of the contact portion. Therefore, the positioning of the guide member in the forward / backward direction relative to the fixed mold can be easily performed. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a schematic diagram of a pressing device according to one embodiment. [Diagram 2] FIG. 2 is an enlarged plan view showing a main part of FIG. [Diagram 3] FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. [Figure 4] FIG. 4 is a cross-sectional view showing the lower mold with the first guide member removed. [Diagram 5] FIG. 5 is a cross-sectional view showing the lower mold after polishing. [Figure 6] FIG. 6 is a cross-sectional view showing a first modified example of the first guide member. [Figure 7] FIG. 7 is a cross-sectional view showing a second modified example of the first guide member. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, one embodiment of a press device will be described with reference to FIGS. First, the configuration of the press device will be described with reference to FIGS. As shown in FIG. 1, the press apparatus includes an uncoiler 10, a conveying device 11, a lower die 20, an upper die 30, a first guide member 40, and a second guide member 53.

[0009] <Uncoiler 10 and conveyor device 11> As shown in FIG. 1, the uncoiler 10 is a device that unwinds a workpiece W that has been wound in a roll shape, and supports the workpiece W in a rotatable manner.

[0010] The conveying device 11 has a frame 13 extending along a conveying direction X (left-right direction in FIG. 1 ), and a plurality of rollers 12 rotatably supported by the frame 13 and arranged side by side in the conveying direction X. The rollers 12 are rotated by a motor (not shown) to intermittently convey the workpiece W pulled out from the uncoiler 10 and supply the workpiece W between the lower die 20 and the upper die 30.

[0011] <Lower mold 20> As shown in FIG. 1, the lower mold 20 includes a lower die set 25 , a die plate 21 , and a die 22 .

[0012] The lower die set 25 is fixed to the upper surface of a fixed table (not shown). A die plate 21 having a rectangular shape in a plan view is fixed to the upper surface of the lower die set 25. The die plate 21 has a plurality of through holes 21b penetrating the die plate 21 in the up-down direction Z and spaced apart from one another in the transport direction X of the workpiece W.

[0013] A die 22 is fitted and fixed in each through hole 21b. The die 22 is provided with a die hole 22a penetrating the die 22 in the up-down direction Z. An upper surface 21a of the die plate 21 is a surface of the lower mold 20 facing the upper mold 30. The upper end surface of the die 22 and the upper surface 21a of the die plate 21 are located on the same plane.

[0014] <Upper mold 30> As shown in FIG. 1, the upper die 30 is located above the lower die 20 , and includes an upper die set 35 , a punch plate 31 , and a punch 32 .

[0015] The upper die set 35 is fixed to the underside of a movable table (not shown) that is configured to be able to rise and fall. A punch plate 31 having a rectangular shape in a plan view is fixed to the lower surface of the upper die set 35. The punch plate 31 is provided with a plurality of mounting holes 31a penetrating the punch plate 31 in the up-down direction Z. The multiple mounting holes 31a are provided at positions corresponding to the multiple die holes 22a, respectively.

[0016] The upper ends of a plurality of punches 32 are fitted into the mounting holes 31a. The punches 32 cooperate with the die 22 to press the workpiece W. <First guide member 40> As shown in FIGS. 1 to 3, the first guide member 40 has a pair of upper plates 43 and a lower plate .

[0017] In the following description, the direction perpendicular to both the conveying direction X and the vertical direction Z of the workpiece W is referred to as the width direction Y. As shown in FIG. 2, the pair of upper plates 43 are provided on both sides of the workpiece W in the width direction Y and extend along the conveying direction X.

[0018] The pair of upper plates 43 have symmetrical shapes in the width direction Y. Therefore, when one of the upper plates 43 is described, a description of the other upper plate 43 may be omitted.

[0019] The upper plate 43 has a main body 43b extending from the upstream side of the lower die 20 to above the upper surface 21a of the die plate 21, and a protruding portion 43a protruding inward in the width direction Y from an upper portion of the main body 43b. The main body 43b is provided with a plurality of through holes 44 penetrating the main body 43b in the up-down direction Z. The through holes 44 are provided at intervals from one another in the conveying direction X.

[0020] The first guide member 40 is attached to the lower die 20 with the lower surface of the main body portion 43b abutting against the upper surface 21a by a bolt 47 screwed into the through hole 44a, which is one of the through holes 44 and overlaps with the upper surface 21a of the die plate 21 in the vertical direction Z.

[0021] 2 and 3, the protruding portion 43a covers the workpiece W from above. In this embodiment, the protruding portion 43a covers an end portion of the workpiece W in the width direction Y from above. The protruding portion 43a is provided over the entire upper portion of the main body portion 43b in the transport direction X.

[0022] 3, the lower plate 42 is a flat plate having a rectangular shape in a plan view, and is provided below a portion of the pair of main bodies 43b that is upstream of the lower die 20. The lower plate 42 is provided with a through hole 42b at a position corresponding to the through hole 44b of the pair of upper plates 43 that is upstream of the lower die 20.

[0023] The upper plate 43 and the lower plate 42 are fastened to each other by screwing a nut 49 onto a bolt 48 inserted into the through hole 42b of the lower plate 42 and the through hole 44b of the upper plate 43. The lower plate 42 connects the portions of the pair of main bodies 43b that are upstream of the lower die 20 to each other.

[0024] The upper surface 42a of the lower plate 42 supports the workpiece W from below. In this embodiment, the upper surface 42a of the lower plate 42 and the upper surface 21a of the die plate 21 are located on the same plane.

[0025] The guide portion 41 is formed by the lower surface of the protruding portion 43a of the upper plate 43, the inner surface in the width direction Y of the lower portion 43c of the main body portion 43b, and the upper surface a of the lower plate . The guide portions 41 are provided so as to guide the transport of the workpiece W by contacting the workpiece W in the up-down direction Z and the width direction Y. That is, the guide portions 41 are provided on both sides of the workpiece W in the width direction Y so as to sandwich the workpiece W in the up-down direction Z.

[0026] In addition, the transport of the workpiece W along the transport direction X is also guided by the lower surface of the protruding portion 43a of the upper plate 43, the inner surface in the width direction Y of the lower portion 43c of the main body portion 43b, and the upper surface 21a of the die plate 21.

[0027] In addition, the lower mold 20 and the upper mold 30 in this embodiment correspond to the fixed mold and the movable mold in the [Means for solving the problem] section, respectively. The upper surface 21a of the die plate 21 in this embodiment corresponds to the mounting surface in the [Means for solving the problem] section. The part of the main body 43b in this embodiment that abuts against the upper surface 21a corresponds to the abutting part in the [Means for solving the problem] section. The part of the main body 43b in this embodiment that extends to the upper surface 21a corresponds to the extension part in the [Means for solving the problem] section.

[0028] <Second guide member 53> 2, the second guide member 53 is disposed on the upper surface 21a of the die plate 21 downstream of the upper plate 43 in the conveying direction X, and has a configuration similar to that of the upper plate 43. Therefore, the configuration of the second guide member 53 is given a reference number obtained by adding "10" to the reference number "**" of the configuration of the upper plate 43, and redundant explanations will be omitted.

[0029] The second guide member 53 is attached to the die plate 21 by a bolt 57 screwed into the through hole 54 . Next, the operation of this embodiment will be described.

[0030] 1, the workpiece W, whose movement in the up-down direction Z is restricted by the first guide member 40, is transported between the lower die 20 and the upper die 30. This guides the movement of the workpiece W along the transport direction X. The first guide member 40 is attached to the lower die 20 with the lower surface of the main body 43b abutting against the upper surface 21a of the die plate 21. Therefore, the accuracy of the mounting position of the first guide member 40 in the up-down direction Z relative to the lower die 20 can be improved simply by improving the machining accuracy of the lower surface of the main body 43b.

[0031] Incidentally, since the punch 32 and the die 22 gradually wear due to friction with the workpiece W, it is necessary to grind the upper end surface of the die 22. A common method is to grind the upper end surface of the die 22 after removing the die 22 from the die plate 21. However, in this case, a process of removing the die 22 from the die plate 21 and a process of adjusting the height of the die 22 so that the upper end surface of the die 22 is located on the same plane as the upper surface 21a of the die plate 21 when attaching the ground die 22 to the die plate 21 are required.

[0032] Therefore, in this embodiment, with the die 22 fixed to the die plate 21, the upper end surface of the die 22 and the die plate 21 are polished simultaneously. Now, with reference to FIGS. 4 and 5, a procedure for simultaneously polishing the upper end surface of the die 22 and the die plate 21 will be described.

[0033] First, the upper mold 30 held by a crane (not shown) is moved to a position away from above the lower mold 20. 4, the first guide member 40 and the second guide member 53 are removed from the upper surface 21a of the die plate 21. The first guide member 40 is removed from the upper surface 21a with the lower plate 42 fixed to the upper plate 43.

[0034] Next, as shown in FIG. 5, the die plate 21 is lifted by a crane (not shown) and transferred to a mounting table 61 of a polishing device 60. 5, with the plurality of dies 22 fixed to the die plate 21, the upper end faces of the plurality of dies 22 and the upper surface 21a of the die plate 21 are polished by a polishing device 60 so as to be positioned on the same plane. That is, the upper end faces of the dies 22 and the upper surface 21a of the die plate 21 are polished simultaneously by the polishing device 60. The polishing device 60 has a grindstone 62 that is rotated around a rotation axis C.

[0035] According to such a polishing method, the position of the upper surface 21a of the die plate 21 changes before and after polishing. In this case, in a configuration in which a work guide is attached to the side surface of the die plate via an attachment member as in a conventional press machine, it is necessary to adjust the position of the work guide in the up-down direction Z.

[0036] In this regard, according to the above embodiment, even if the position of the upper surface 21a of the die plate 21 changes before and after polishing, the first guide member 40 can be easily positioned in the up-down direction Z relative to the lower die 20.

[0037] Next, the effects of this embodiment will be described. (1) The first guide member 40 is located upstream of the lower die 20 and has a guide portion 41 that contacts the workpiece W in the vertical direction Z to guide the transport of the workpiece W, and a lower surface that abuts against the upper surface 21a of the die plate 21. The first guide member 40 is attached to the lower die 20 with the lower surface abutting against the upper surface 21a.

[0038] According to such a configuration, the above-mentioned effects are achieved, and therefore the positioning of the first guide member 40 in the up-down direction Z with respect to the lower mold 20 can be easily performed. (2) The guide portions 41 are provided on both sides of the workpiece W in the width direction Y so as to sandwich the workpiece W in the up-down direction Z.

[0039] According to this configuration, the workpiece W is transported between the lower die 20 and the upper die 30 in a state in which the movement of the workpiece W in both directions in the up-down direction Z is restricted by the guide parts 41. This makes it possible to appropriately guide the movement of the workpiece W along the transport direction X.

[0040] (3) The guide portion 41 includes a lower plate 42 that supports the workpiece W from below, and a pair of upper plates 43 that are connected to the lower plate 42 on both sides of the workpiece W in the width direction Y and cover the workpiece W from above.

[0041] When the guide portion 41 is configured to clamp both sides of the workpiece W in the width direction Y from the top and bottom directions Z, there is a risk that portions of the workpiece W other than both sides in the width direction Y may bend downward due to the weight of the workpiece W itself.

[0042] In this regard, according to the above-described configuration, the workpiece W is supported from below by the lower plate 42, so that the bending deformation of the workpiece W due to its own weight can be restricted. Therefore, the movement of the workpiece W along the transport direction X can be more appropriately guided.

[0043] (4) The upper plate 43 has an extension portion that extends along the conveying direction X to above the upper surface 21a of the die plate 21. According to this configuration, the upper plate 43 extends to above the upper surface 21a of the die plate 21 by the extension portion. Therefore, the movement of the workpiece W along the conveying direction X can be guided not only upstream of the lower die 20 but also between the lower die 20 and the upper die 30.

[0044] <Example of change> This embodiment can be modified as follows: This embodiment and the following modifications can be combined with each other to the extent that there is no technical contradiction.

[0045] In this embodiment, both ends of the workpiece W in the width direction Y are covered from above by the upper plate 43, but the present invention is not limited to this. For example, as shown in Fig. 6, a pressing portion 170 that presses the workpiece W from above may be provided between the upper ends of the upper plates 43. In this case, the entire workpiece W in the width direction Y can be clamped from the up-down direction Z by the guide portion 141.

[0046] In this embodiment, the upper plate 43 has an extension portion that extends along the conveying direction X to above the upper surface 21a of the die plate 21, but is not limited to this. The guide portion 41 may be provided only upstream of the lower die 20. In this case, the portion of the upper plate 43 that is located above the upper surface 21a of the die plate 21 is only the main body portion 43b.

[0047] In the present embodiment, the lower plate 42 is provided to support the workpiece W from below over the entire width direction Y, but the present invention is not limited to this. For example, as shown in Fig. 7, a pair of lower plates 242 may be provided to support only both ends of the workpiece W in the width direction Y from below.

[0048] The guide portion 41 is not limited to a configuration in which the workpiece W is sandwiched in the vertical direction Z on both sides of the workpiece W in the width direction Y, but may be configured to support the workpiece W only from below. [Explanation of symbols]

[0049] 10. Uncoiler 11...Transportation device 12. Laura 13...Frame 20…Lower mold (fixed type) 21…Die plate 21a…Top surface (mounting surface) 21b...Through hole 22…Die 22a…Die hole 25…Lower die set 30…Upper mold (movable type) 31...Punch plate 31a…Mounting hole 32...Punch 35…Upper die set 40...First guide member (guide member) 41...Guide section 42…Lower plate 42a…Top surface 42b...Through hole 43…Upper plate 43a...Protruding part 43b…Body part 43c…Lower 44,44a,44b...Through hole 47…Bolt 48…Bolt 49...Nut 53...Second guide member 54...Through hole 57…Bolt 60...polishing device 61...Placement table 62...Whetstone 141...Guide section 170…Pressing section 242…Lower plate

Claims

1. a fixed mold having a die; a movable die having a punch that is movable toward and away from the fixed die and presses a workpiece in cooperation with the die; a guide member having a guide portion located upstream of the fixed mold in a conveying direction of the workpiece and contacting the workpiece in a direction in which the movable mold advances and retreats to guide the conveying of the workpiece, and a contact portion contacting an attachment surface of the fixed mold that faces the movable mold; The guide member is attached to the fixed mold with the abutment portion abutting against the mounting surface. Press equipment.

2. When a direction perpendicular to both the conveying direction and the forward and backward direction is defined as a width direction, The guide portions are provided on both sides of the workpiece in the width direction so as to sandwich the workpiece in the forward and backward directions. The press device according to claim 1 .

3. The movable die is an upper die, The fixed die is a lower die, The guide portion is A lower plate that supports the work from below; A pair of upper plates are connected to the lower plate on both sides of the workpiece in the width direction and cover the workpiece from above. The press device according to claim 2 .

4. the upper plate has an extension portion that extends along the conveying direction to above an upper surface of the fixed mold, The extension portion has the abutment portion. The press device according to claim 3.

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