Meandering suppression structure for progressive press dies

Abstract

This invention provides a meandering suppression structure for progressive press dies that can suppress material meandering. [Solution] The meandering suppression structure 100 comprises a lower die 10 having a conveying surface 10a on which material 30 is conveyed, a pair of guide rails 20 that are spaced apart in a width direction intersecting the conveying direction of material 30 so as to sandwich the conveying surface 10a and extending in the conveying direction, and a plurality of positioning members 40 that are positioned upstream of the guide rails 20 in the conveying direction, spaced apart in both the conveying direction and the width direction, and capable of contacting the sides 31, 32 of the material 30. In the width direction, the distance W20 between the pair of guide rails 20, 20 is greater than the distance W40 between the plurality of positioning members 41, 42.

Description

Technical Field

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[0001] The present invention relates to a meandering suppression structure for a progressive press die.

Background Art

[0002] For example, a die guide mechanism for guiding a long strip material fed forward in a die for press working is known (for example, Japanese Patent Application Laid-Open No. 2008-207198). This die guide mechanism includes a lower support means disposed on the upstream process side of the die in the conveyance direction of the long strip material and supporting the lower surface of the long strip material, and a rotating body disposed above the long strip material. The die guide mechanism has a guide portion where the rotating body is in pressure contact with the tapered portions on both sides of a thick portion extending in the longitudinal direction formed on the upper surface of the long strip material.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the above prior art, materials other than lead frames have not been considered.

[0005] The present invention provides a meandering suppression structure for a progressive press die capable of suppressing meandering of a material.

Means for Solving the Problems

[0006] A meandering suppression structure for a progressive press die according to one aspect of the present invention, comprising: a lower die having a conveying surface on which material is conveyed; a pair of guide rails arranged apart in a width direction intersecting the material conveying direction so as to sandwich the conveying surface and extending in the conveying direction; and a plurality of positioning members arranged upstream of the guide rails in the conveying direction, spaced apart in both the conveying direction and the width direction, and capable of contacting the side surface of the material, wherein the distance between the pair of guide rails in the width direction is greater than the distance between the plurality of positioning members. [Effects of the Invention]

[0007] According to one aspect of the present invention, a meandering suppression structure for a progressive press die that can suppress material meandering can be provided. [Brief explanation of the drawing]

[0008] [Figure 1] This is a plan view illustrating a meandering suppression structure for a progressive press die according to one embodiment. [Modes for carrying out the invention]

[0009] The meandering suppression structure for a progressive press die according to an embodiment of the present invention will be described below. Figure 1 is a plan view illustrating a meandering suppression structure for a progressive press die according to one embodiment. Figure 1 shows arrows indicating the X-axis, Y-axis, and Z-axis directions which are orthogonal to each other. The directions include the directions indicated by the arrows and their reverse directions. The X-axis direction is an example of the conveying direction.

[0010] As shown in Figure 1, the meandering suppression structure 100 for progressive press die comprises a lower die 10, a pair of guide rails 20, and a plurality of guide pins 40. Hereinafter, "meandering suppression structure 100 for progressive press die" may be abbreviated as "meandering suppression structure 100". The meandering suppression structure 100 includes a structure for progressively feeding material 30 into the die in which press working is performed. Material 30 may be a long strip. Material 30 has a predetermined length, a predetermined width, and a predetermined thickness. The longitudinal direction of material 30 is along the X-axis direction. The width direction of material 30 is along the Y-axis direction. The thickness direction of material 30 is along the Z-axis direction. The surface of material 30 is, for example, flat and does not have any protrusions. However, material 30 may have an uneven shape. Material 30 has side surfaces 31 and 32 that face each other in the width direction of material 30.

[0011] The lower die 10 has a conveying surface 10a on which the material 30 is conveyed. The conveying surface 10a extends in the conveying direction of the material 30 (X-axis direction). The conveying surface 10a includes, for example, a surface parallel to the XY plane.

[0012] A pair of guide rails 20 are arranged so as to sandwich the transport surface 10a in the Y-axis direction. The pair of guide rails 20 extend in the X-axis direction. The pair of guide rails 20 have a guide surface 21 that faces each other in the Y-axis direction and extends in the X-axis direction. The guide surface 21 may be, for example, a surface parallel to the XZ plane. The material 30 is transported on the transport surface 10a between the pair of guide surfaces 21.

[0013] The multiple guide pins 40 include guide pins 41 to 44. When guide pins 41 to 44 are not distinguished, they may be referred to simply as guide pin 40. The guide pins 40 are cylindrical in shape, and their axial direction extends in the Z-axis direction. The multiple guide pins 40 are positioned upstream of the guide rail 20 in the material 30 transport direction.

[0014] A pair of guide pins 41 and 42 are positioned apart in the Y-axis direction. A pair of guide pins 43 and 44 are positioned apart in the Y-axis direction. A pair of guide pins 43 and 44 are positioned upstream of a pair of guide pins 41 and 42 in the material transport direction of the material 30. Guide pins 41 and 43 are positioned apart in the X-axis direction. Guide pins 42 and 44 are positioned apart in the X-axis direction. Guide pins 41 and 43 have outer peripheral surfaces that can contact the side surface 31 of the material 30. Guide pins 42 and 44 have outer peripheral surfaces that can contact the side surface 32 of the material 30. The material 30 is positioned in the Y-axis direction by contacting multiple guide pins 40.

[0015] In the Y-axis direction, the distance W20 between a pair of guide rails 20 is greater than the distance W40 between a pair of guide pins 41, 42 (43, 44). Distance W20 is the distance between the guide surfaces 21. Distance W40 may also be the shortest distance between the outer surfaces of the guide pins 41, 42 in the Y-axis direction. Distance W40 may also be the shortest distance between the outer surfaces of the guide pins 43, 44 in the Y-axis direction. In the Y-axis direction, the center position between the guide surfaces 21, 21 and the center position between the pair of guide pins 41, 42 may be the same. In the Y-axis direction, a gap is formed between the side surface 31 of the material 30 and the guide surface 21 of the guide rail 20. In the Y-axis direction, a gap is formed between the side surface 32 of the material 30 and the guide surface 21 of the guide rail 20.

[0016] According to this meandering suppression structure 100 for progressive press dies, the material 30 can be positioned upstream of the die. Multiple guide pins 40 come into contact with the sides 31, 32 of the material 30, and the material 30 is positioned in the Y-axis direction. The material 30 is transported in the X-axis direction while being positioned by the guide pins 40. The meandering suppression structure 100 can suppress meandering of the material 30.

[0017] Furthermore, in the meandering suppression structure 100, a pair of guide rails 20 are provided inside the mold, and a gap is formed between the guide surface 21 of the guide rails 20 and the side surfaces 31, 32 of the material 30. This suppresses contact between the material 30 and the guide rails 20, thereby suppressing deformation of the material 30. As a result, the material 30 can be transported reliably, and production efficiency can be improved. In the meandering suppression structure 100, the transport surface 10a is flat, and it is not necessary to provide an uneven shape in the center. A flat plate-shaped material 30 can be applied to the meandering suppression structure 100 to suppress the meandering of the material 30.

[0018] In the above embodiment, a guide pin 40 is exemplified as the positioning member, but the positioning member is not limited to a guide pin, and may be a guide roller, for example.

[0019] Although preferred embodiments of the present invention have been described in detail above, the present invention is not limited to these embodiments, and various modifications or changes are possible within the scope of the gist of the present invention as described in the claims. [Explanation of symbols]

[0020] 100...Meandering suppression structure for progressive press die, 10...Lower die, 10a...Conveying surface, 20...Guide rail, 30...Material, 31,32...Side, 40...Guide pin (positioning member), 41~44...Guide pin (positioning member), W20...Distance between a pair of guide rails, W40...Distance between a pair of guide pins, X...X-axis direction (conveying direction), Y...Y-axis direction (width direction), Z...Z-axis direction.

Claims

[Claim 1] A meandering suppression structure for progressive press dies, A lower die having a conveying surface on which the material is conveyed, A pair of guide rails are arranged apart in a width direction intersecting the material transport direction, so as to sandwich the transport surface, and extending in the transport direction, The system comprises a plurality of positioning members arranged upstream of the guide rail in the transport direction, spaced apart in the transport direction and spaced apart in the width direction, and capable of contacting the side surface of the material, A meandering suppression structure for a progressive press die, wherein the distance between the pair of guide rails in the width direction is greater than the distance between the plurality of positioning members.

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