JP2005028440A - Method and device for upsetting wire rod - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact device for upsetting a wire rod with which the tip end part or this neighborhood of the wire rod can be worked under intensive clamping force and a method thereof. <P>SOLUTION: A guiding member is installed on a frame table, and to this guiding member, a sliding frame formed of one side connecting member fitted to each one end side of parallel two guide parts and another side connecting member fitted to each other end side of the two guide posts, is penetrated so as to be freely slid, and one side intermediate member fitted to the one side connecting member in this sliding frame is penetrated through the above guiding member so as to be freely slid. Successively, one side grip die is fitted to the other end part, and another side grip die facing the one side grip die is fitted to the one end part of another intermediate member, and a toggle mechanism is connected between the other side intermediate member of the other side grip die and the other side connecting member of the sliding frame with a pin, and further, under state of holding the wire rod between the one side and the other side grip dies, deformation-working is applied to the tip end part or the neighborhood of this wire rod by pressing the dies. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a wire upsetting method and apparatus.

Conventionally, when a bending process is applied to a wire and an upsetting process is performed on the tip of the wire or in the vicinity thereof, the following work has been performed. That is, the wire rod fastened in a coil shape is fed to a necessary length by a feeding device, introduced into a wire bending device, and further fed out from there for a certain length. And it processed with the upsetting press at the front-end | tip or its vicinity of this wire, and after that, it bent and cut | disconnected. Here, as the upsetting press, a type in which the die is operated by a direct acting type hydraulic device and a type in which the die is operated by a crank press have been used.
Therefore, the upsetting apparatus has to be large or large.

  An object of the present invention is to solve the above-mentioned problems and to provide a wire rod upsetting method and device that can be processed with a compact device at or near the tip of the wire rod under a strong clamping force. To do.

  The method of the present invention comprises a guide member installed on a gantry and formed of one connecting member attached to one end of two parallel guide posts and the other connecting member attached to the other end with respect to the guide member. The sliding frame is slidably penetrated, and one intermediate member having one end attached to one connecting member of the sliding frame slidably penetrates the guide member, and one grip die is attached to the other end. The other grip die facing the one grip die is attached to one end of the other intermediate member, and a toggle mechanism is pin-coupled between the other intermediate member of the other grip die and the other connecting member of the sliding frame, In the state where the wire rod is held between the other grip dies, the die is pressed against the tip of the wire rod or the vicinity thereof to deform the wire rod.

  A first aspect of the apparatus of the present invention includes a gantry, a guide member installed on the gantry, and one connecting member attached to one end of two parallel guide posts that slidably penetrate the guide member. A sliding frame formed by the other connecting member attached to the other end, and an intermediate member having one end attached to one connecting member of the sliding frame slidably penetrates the guide member, and others One grip die is attached to the end, the other grip die opposite to the one grip die is attached to one end of the other intermediate member, the intermediate member slidably penetrates the guide member, and the other intermediate member A wire clamp portion with the other grip die attached to the end, a toggle mechanism pin-coupled between the other intermediate member of the other grip die and the other connecting member of the sliding frame, and a drive source of the toggle mechanism And A clamp actuating portion, a die provided on the gantry at a position corresponding to a gripping position of the wire rod of the grip die, a die holder to which the die is detachably attached, and a pressure bar that presses the die in a horizontal direction. And an upsetting operation unit which is slidably guided and has a driving source connected to the end of the pressure rod.

  According to a second aspect of the apparatus of the present invention, in addition to the first aspect, the upsetting operation unit is connected to a hydraulic drive source via a toggle mechanism.

  According to a third aspect of the apparatus of the present invention, in addition to the first or second aspect, a sliding guide is provided on the mount, and the sliding body slides in a direction perpendicular to the wire feed direction in the sliding guide. One or more dice holders are attached to the sliding body, and one or more dice are arranged in parallel in the sliding direction of the sliding body.

  According to the present invention, when upsetting is performed at or near the tip of the wire, a strong clamping force works because the toggle mechanism is used for the clamp operating portion. In addition, since the one and the other grip dies are operated by one set of toggle mechanisms, the apparatus can be configured compactly.

Embodiments of the present invention will be described below based on an embodiment shown in the drawings.
1 to 3, the apparatus of the present invention generally includes a guide member 2, a rectangular sliding frame 3, a wire rod clamp unit 10, a toggle mechanism 21, a clamp operating unit 20 including a hydraulic drive source 22, and a die 30. , An upsetting operation unit 50 to which a hydraulic drive source 54 is connected via a die holding unit 40 and a toggle mechanism 53 is provided.

  1, 2 and 4, a guide member 2 is erected on the upper surface of one side (left side in FIG. 1) of the gantry 1, and a rectangular sliding frame 3 is guided in such a manner that it can slide up and down. It passes through the top plate of 1 and reaches the lower side. That is, the guide member 2 includes a rectangular upright plate 2a and upper and lower ends of the guide member 2 and a projecting member 2b protruding toward the die 30 described later. The sliding frame 3 is attached to two parallel guide posts 3a slidably passing through the projecting member 2b of the guide member, an upper (one) connecting member 3b attached to one end thereof, and the other end. It is formed with the lower (other) connecting member 3c.

  4 and 5, the wire clamp portion 10 is provided in the frame of the sliding frame 3. This wire clamp part has upper (one) and lower (other) grip dies 11, 14, attachment members 12, 15 and intermediate rods 13, so as to sandwich the wire W fed in the horizontal direction from above and below. 16 and so on. That is, one intermediate member 13 having one end attached to one connecting member 3b of the sliding frame 3 slidably penetrates the guide member 2, and one grip die 11 is attached to the other end. The other grip die 14 facing the one grip die is attached to one end of the other intermediate member 16, and the intermediate member 16 slidably penetrates the guide member 2 and reaches the lower side of the top plate. And the semicircular groove | channel is provided in the clamping surface of the grip dies 11,14. A grip guide 4 that guides the grip dies 11 and 14 to slide up and down is provided at a position corresponding to the hole 2 c of the guide member 2.

  2 and 5, the clamp operation unit 20 is provided below the top plate 1 a of the gantry 1. A toggle mechanism 21 (consisting of a pair of links and a connection) is pin-coupled between the other intermediate member 16 of the other grip die 14 and the other connecting member 3c of the sliding frame, and the toggle mechanism is connected to a hydraulic piston cylinder. A driving source 22 is connected.

  In FIG. 5, the drive source 22 is attached to the vertical surface of the support plate 1 b that supports the top plate 1 a of the gantry 1 by the attachment member 5 so that the vertical adjustment is possible. That is, the support plate 1b is provided with an accommodation hole 1d through which the drive source 22 passes. A mounting plate 5a is fixed to the drive source 22, and a long long hole 5b is provided in the vertical direction of the mounting plate. A mounting bolt 5c penetrating the long hole is screwed into the support plate 1b. Further, the tip of the adjustment screw 5d abuts on the upper and lower sides of the mounting plate 5a so that the vertical position of the drive source 22 can be adjusted. The adjusting screw 5d is screwed into a bracket 5e fixed to the support plate 1b.

  2, 3, and 6, a die 30 is provided on the top plate 1 a of the gantry 1 at a position corresponding to the wire holding position of the grip dies 11 and 14. The die 30 includes a first process die 31 that forms a flange part in the middle of the wire, and a second process die 32 that forms a crimped part at the tip of the wire. These dies are detachably attached to the die holder 43.

  The upsetting unit 50 is installed on the upper side of the top plate 1a, and a pressure bar 52 that pressurizes the die 30 in the horizontal direction is slidably guided by a guide 51, and a toggle mechanism is provided at the end of the pressure bar. A hydraulic drive source 54 is connected via 53.

  Then, these two dies 31 and 32 are juxtaposed in the direction perpendicular to the wire feed direction in the die holding part 40. That is, the sliding guide 41 is installed on the gantry top plate, and the sliding body 42 is provided so as to be slidable in the direction perpendicular to the wire feed direction. A die holder 43 is attached to the sliding body, and the two dies are detachably attached to the die holder. A piston cylinder as a sliding source 44 is fixed to one end of the sliding guide, and the sliding body 42 is reciprocated. Further, near the other end of the sliding body, as the positioning means 45, there are provided two concave portions 45a arranged in the sliding direction and convex portions 45b (driven by the piston cylinder 45c) engaged therewith.

  The operating state will be described above. 2, 4, and 6, the wire W is sent in the horizontal direction along the length direction from a wire bending apparatus (not shown). In the wire clamp portion, the feeding is stopped while passing between the grip dies 11 and 14 that are separated from each other vertically and protruding from the die toward the die 30 by a predetermined length. Next, the clamp operating unit 20 is operated. That is, when the toggle mechanism 21 is operated by driving the hydraulic cylinder 22, the sliding frame 3 and the one grip die 11 are lowered, the other grip die 14 is raised, and the pair of V-shaped links of the toggle mechanism 21 are arranged in a straight line. Approaches the state and generates a powerful toggle force. Thereby, a grip die grasps a wire rod strongly.

  Here, the positioning of the grip dies 11 and 14 where a strong toggle force is applied is performed as follows. In FIG. 5, the mounting bolt 5c is loosened, then the upper and lower adjusting screws 5d are loosened, and the drive source 22 is moved up and down together with the mounting plate 5a through the elongated hole 5b of the mounting plate 5a. 5d is operated and the front-end | tip is made to contact | abut to the upper-lower-end surface of the attachment board 5a. Thus, positioning is performed, and then the mounting bolt 5c is screwed and fixed to the support plate 1b.

  Next, the first step is performed. At this time, the axis of the first process die 31 and the axis of the wire W gripped by the clamp part 10 are in a state of matching. 2, 3, 6, when the hydraulic cylinder 54 is driven and the toggle mechanism 53 is operated, the pair of V-shaped links approaches a straight line in a straight line, and a strong toggle is generated. Power is generated. As a result, the pressure rod 52 is guided by the guide 51 and presses the die 31 against the tip of the wire W, whereby the wire is subjected to upsetting in the first step. Thereafter, the toggle mechanism 53 is reversely operated to retract the first process die 31.

  Next, the upsetting process in the second step is performed. That is, the operation of the wire clamp part 10 is released, the grip dies 11 and 14 are opened, the wire W is retracted by a specified amount, and the wire clamp part 10 is operated again to grip the wire. Further, the sliding body 42 of the die holding unit 40 is slid by driving the sliding source 44 so that the second process die 32 of the die holder 43 corresponds to the tip of the wire rod. At this time, the convex portion 45b is engaged with the concave portion 45a of the positioning means to be positioned. Then, the upsetting operation unit is operated again, and in the same manner as described above, the second process die 32 is pressed against the tip of the wire rod to perform the upsetting process in the second process.

  2, the lower end of the hydraulic cylinder 54 is pin-coupled to the upper side of the middle plate 1c of the gantry 1 so as to be swingable, and the connection of the toggle mechanism 53 penetrates the top plate of the gantry 1. The pair of links are concentrically pin-coupled on the upper side of the top plate and on the hydraulic cylinder side. Accordingly, as the hydraulic pressure of the hydraulic cylinder 54 rises, the pair of links approach in series on a straight line, but at this time, the hydraulic cylinder 54 slightly tilts toward the die 30 side.

In addition, in the toggle mechanism of the clamp operating portion, the grip force is strong and the structure is compact. Here, as shown in FIG. 2, in the toggle mechanisms 21 and 53 of the clamp operation unit and the upsetting operation unit, the first and first operations are performed so that the pair of V-shaped links can be stopped just before they are placed in series on a straight line. 2 stoppers 6a and 6b are provided.

  FIG. 7 shows another embodiment of the grip dies 11, 14 in which the grip dies can be easily replaced in accordance with the change in the thickness of the wire. That is, the grip die is divided into a main body part 11a and an exchange part 11b, and the exchange part 11b is formed into a block shape having a wire holding surface, and a complicated type having a holding surface corresponding to the wire thickness is prepared. Then, an L-shaped attachment plate 11d that fits in an engagement groove 11c provided on the surface of the replacement part is detachably attached to the main body part 11a with a screw 11e.

  The present invention is not limited to the above-described embodiments and embodiments, but includes various modifications without departing from the spirit and scope of the claims.

  In addition to wire rods, it can also be applied to upsetting bars.

It is a left view of one Example of this invention apparatus. It is Y2-Y2 sectional drawing of FIG. FIG. 3 is a plan view of FIG. 2. FIG. 3 is an enlarged cross-sectional view of a main part of FIG. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a perspective view explaining the operating state of this invention. It is a disassembled perspective view of the other Example of a grip die.

Explanation of symbols

W wire rod 1 gantry 2 guide member 2a upright plate 2b overhang member 3 sliding frame 3a guide post 3b one connecting member 3c other connecting member 4 die guide 5 mounting member 6a first stopper 6b second stopper 10 wire clamp portion 11 one grip die DESCRIPTION OF SYMBOLS 12 One attachment member 13 One intermediate bar 14 The other grip die 15 The other attachment member 16 The other intermediate rod 20 Clamp action part 21 Toggle mechanism 22 Hydraulic cylinder 30 Die 31 First process die 32 Second process die 40 Dice holding part 41 Slide Motion guide 42 Sliding body 43 Die holder 44 Sliding source 45 Positioning means 50 Upsetting operation part 51 Guide 52 Pressure bar 53 Toggle mechanism 54 Hydraulic cylinder

Claims (4)

A guide member is installed on the gantry, and a sliding frame formed by one connecting member attached to one end of two parallel guide posts and the other connecting member attached to the other end with respect to the guide member. Slidably penetrates,
One intermediate member having one end attached to one connecting member of the sliding frame slidably penetrates the guide member, one grip die is attached to the other end, and the other grip die facing the one grip die is the other. Attach to one end of the intermediate member,
A toggle mechanism is pin-coupled between the other intermediate member of the other grip die and the other connecting member of the sliding frame,
A wire upsetting method, wherein the wire rod is deformed by pressing a die against or near the tip of the wire rod while the wire rod is gripped between the one and the other grip dies. A frame,
A guide member installed on the mount;
A sliding frame formed by one connecting member attached to one end of two parallel guide posts slidably penetrating the guide member and the other connecting member attached to the other end;
One intermediate member having one end attached to one connecting member of the sliding frame slidably penetrates the guide member, one grip die is attached to the other end, and the other grip die facing the one grip die is A wire clamp portion attached to one end of the other intermediate member, the intermediate member slidably penetrating the guide member, and the other grip die attached to the other end of the other intermediate member;
A toggle mechanism pin-coupled between the other intermediate member of the other grip die and the other connecting member of the sliding frame, and a clamp actuating portion comprising a drive source of the toggle mechanism;
A die provided on the gantry at a position corresponding to a wire holding position of the grip die;
A die holder for detachably attaching the die;
A wire rod installation comprising: a pressure rod that is slidably guided with respect to the die in a horizontal direction, and a drive actuator connected to a drive source at an end of the pressure rod. Processing equipment. The wire upsetting apparatus according to claim 2, wherein the upsetting operation unit is connected to a hydraulic drive source via a toggle mechanism. A sliding guide is provided on the gantry, the sliding body is provided on the sliding guide so as to be slidable in a direction perpendicular to the wire feed direction, and one or more die holders are attached to the sliding body, The wire upsetting apparatus according to claim 2, wherein one or more dies are juxtaposed in the sliding direction of the sliding body on the die holder.

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