KR100657614B1 - Seat spring production apparatus for an automobile and production method - Google Patents

Abstract

An equipment for manufacturing an automobile seat spring and a method for manufacturing an automobile seat spring using the same are provided to improve commercial production capability by manufacturing the seat spring through one forming process and improve performance of the product by increasing forming accuracy of a product. An equipment for manufacturing an automobile seat spring comprises: a plurality of first clamping means installed with being spaced from one another in an equal distance such that an arrangement distance of the first clamping means are freely varied to clamp a wire rod in an equal distance from a lower side to the upper side of the wire rod; a plurality of second clamping means which are alternately disposed with the first clamping means and installed with being spaced from one another in an equal distance such that an arrangement distance of the second clamping means are freely varied to clamp portions of the wire rod that are not clamped by the first clamping means in an equal distance from an upper side to a lower side of the wire rod; operating means operated to come close to the first and second clamping means in a direction such that the first and second clamping means are alternated with each other to form the wire rod into a zigzag shaped spring by the first and second clamping means; and a pusher for forming the wire rod into a rectangular zigzag shaped spring by closely adhering the first and second clamping means to each other such that left and right gaps are not present between the first and second clamping means in the state that the first clamping means and the second clamping means alternately come close to each other. The first clamping means comprise lower clamps(220) and lower fastening blocks(230), and the second clamping means comprise upper clamps(320) and upper fastening blocks(330).

Description

Manufacturing apparatus for seat spring for automobile and manufacturing method of seat spring using same {Seat spring production apparatus for an automobile and production method}

1 is a mounting state of the conventional seat spring

2 is a perspective view of a conventional seat spring

Figure 3 is a bad state of molding of conventional seat spring

Figure 4 is an overall configuration of the seat spring manufacturing apparatus according to the present invention

5 is a detailed configuration diagram of a seat spring manufacturing apparatus according to the present invention 1

Figure 6 is a detailed configuration of the seat spring manufacturing apparatus according to the present invention 2

Figure 7 is a perspective view of the assembly state of the lower clamp in the seat spring manufacturing apparatus according to the present invention

Figure 8 is an exploded perspective view of the lower clamp in the seat spring manufacturing apparatus according to the present invention

Figure 9 is an exploded perspective view of the lower tightening block in the seat spring manufacturing apparatus according to the present invention

Figure 10 is a longitudinal cross-sectional view of the coupling state of the lower tightening block in the seat spring manufacturing apparatus according to the present invention

11 is a view for explaining a gap maintaining means of the seat spring manufacturing apparatus according to the present invention;

12 is an upper clamp of the seat spring manufacturing apparatus according to the present invention

Figure 13 is an exploded perspective view of the upper clamp in the seat spring manufacturing apparatus according to the present invention

Figure 14 is an exploded perspective view of the upper tightening block in the seat spring manufacturing apparatus according to the present invention

Figure 15 is a longitudinal cross-sectional view of the coupling state of the upper tightening block in the seat spring manufacturing apparatus according to the present invention

16 is a view for explaining the interval maintaining means of the seat spring manufacturing apparatus according to the present invention;

17 is a view for explaining the pusher and puller of the seat spring manufacturing apparatus according to the present invention 1

18 is a view for explaining a pusher and puller of the seat spring manufacturing apparatus according to the present invention

19 is a view for explaining a pusher and puller of the seat spring manufacturing apparatus according to the present invention

20 is a conceptual view illustrating a puller of the seat spring manufacturing apparatus according to the present invention.

21 is a conceptual view for explaining another embodiment of a puller of the seat spring manufacturing apparatus according to the present invention.

22 is a view for explaining a seat spring manufacturing method according to the present invention

Figure 23 is a view for explaining the function of the molding groove in the clamp of the seat spring manufacturing apparatus according to the present invention

24 is a cross-sectional view showing the clamping and de-clamping state of the upper clamp in the seat spring manufacturing apparatus according to the present invention

25 is a view showing the clamping state of the lower clamp in the seat spring manufacturing apparatus according to the present invention

26 is another embodiment of the seat spring manufacturing apparatus according to the present invention

27 is an assembled perspective view of the lower clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention

Figure 28 is an exploded perspective view of the lower clamp upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention

29 is a state diagram before and after clamping of the lower clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention

30 is a view for explaining equal interval maintaining means in another embodiment of the seat spring manufacturing apparatus according to the present invention.

31 is an assembled perspective view of the upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention

32 is an exploded perspective view of the upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention

33 is an operation state of the upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention

34 is a view for explaining equal interval maintaining means in another embodiment of the seat spring manufacturing apparatus according to the present invention.

35 is a view illustrating a pusher and a puller in another embodiment of the seat spring manufacturing apparatus according to the present invention.

36 is a view illustrating a pusher and a puller in another embodiment of the seat spring manufacturing apparatus according to the present invention.

37 is a view illustrating a pusher and a puller in another embodiment of a seat spring manufacturing apparatus according to the present invention.

38 is a conceptual view illustrating a puller in another embodiment of the seat spring manufacturing apparatus according to the present invention.

39 is a conceptual view for explaining another embodiment of the puller in another embodiment of the seat spring manufacturing apparatus according to the present invention.

40 is a view for explaining another embodiment of the seat spring manufacturing method according to the present invention;

<Explanation of symbols for the main parts of the drawings>

10: wire rod 20: zigzag spring

21: vertical element 22: horizontal element

100: seat spring manufacturing apparatus 110: lifting cylinder

200,600: Lower mold 210,610: Lower plate

220,620: Lower clamp 230: Lower tightening block

240,640: Lower equal interval maintaining means 300,700: Upper mold

310,710: upper plate 320,720: upper clamp

330: upper tightening block 340,740: upper equal interval maintaining means

400,800: Pusher 500,900: Fuller

630: lower tightening means 730: upper tightening means

The present invention relates to an automobile seat spring that is installed in each of the seat and backrest of the automobile seat to complement the cushion of the seat pad, and in particular, the mass production capacity is improved by manufacturing the seat spring by single molding. In addition, the present invention relates to a device for manufacturing a seat spring for automobiles and a method for manufacturing a seat spring using the same, which are characterized by improving the molding performance of a product to improve product performance.

As in FIG. 1, the car seat s should be considered comfortable because the driver or passenger should sit for a long time. For this comfort, seat pads made of fluffy material are used, but seat pads alone are difficult to maintain the cushion for a long time due to problems such as durability, so that a zigzag-type seat spring (1) is laid. It complements the pad cushion.

These days, the seat spring 1 is formed in a so-called zigzag shape in which a straight metal rod having elasticity is repeated in a square wave shape as shown in FIG. By forming the surface (arrow direction in Fig. 2), it is possible to obtain the same effect as a leaf spring.

Conventionally, in forming the above-described zigzag sheet spring, each rectangular pattern is molded one by one by pressing means and jig while moving the linear metal rod in the longitudinal direction. Because of this, it takes a lot of time in forming one seat spring, and there was a problem that the mass production capacity is lowered.

In addition, when the sheet spring is completed, the horizontal element 1a does not form an integer and is incompletely formed to have a slightly rounded shape as shown in FIG. 3, thereby degrading the spring performance of the seat spring.

Accordingly, the present invention has been made to solve the conventional problems as described above, the main object of the present invention is to manufacture a seat spring by a single molding, the production apparatus of the automobile seat spring to improve the mass production capacity and using the same The present invention provides a method for manufacturing a seat spring.

In addition, another object of the present invention is to provide an apparatus for manufacturing a seat spring for a vehicle and a method for manufacturing a seat spring using the same to improve the product performance by increasing the molding precision of the product.

Main features of the present invention for achieving the above object,

First, a plurality of first clamping means is installed at equal intervals so that the arrangement interval can be changed autonomously, the first clamping means for clamping the wire rod at equal intervals from the lower side of the wire rod to the upper side; Arranged alternately with the first clamping means and installed at equal intervals so that the arrangement intervals can be changed autonomously, from the upper side to the lower side of the wire rod, the portion not clamped by the first clamping means of the wire rod is A plurality of second clamping means for clamping at equal intervals; Movable means for moving the first and second clamping means close to each other in an alternating direction such that the wire rod is shaped into a zigzag spring by the first and second clamping means; And a pusher in which the first clamping means and the second clamping means are in close contact with each other so that there are no left and right gaps therebetween so as to be molded into a square zigzag spring. It is an apparatus for manufacturing seat springs.

Second, lower plate; A plurality of lower clamps installed on the upper surface of the lower plate so as to be linearly movable, and the wire rods mounted in a horizontal state; Lower tightening means installed on each lower clamp to tighten the lower clamp so that the lower clamp can clamp the wire rod; A lower mold including lower equal interval maintaining means for allowing the lower clamp to maintain equal intervals;

An upper plate in a liftable state; A plurality of upper clamps installed on the lower surface of the upper plate so as to be movable in a straight line, the plurality of upper clamps being offset from the lower clamps; An upper tightening means installed on each upper clamp to tighten the upper clamp so that the upper clamp clamps the wire rod; End forming blocks for straight bending on both left and right sides of the lower plate for bending both ends of the wire rod downward; The upper mold and the upper mold and the upper mold made of the upper equal interval maintaining means for maintaining the equal intervals; and the manufacturing apparatus of the seat spring for automobiles, characterized in that consisting of.

Third, lower plate; A plurality of lower clamps installed on the upper surface of the lower plate so as to be linearly movable, and the wire rods being seated in a horizontal state; Lower tightening means installed on each lower clamp to tighten the lower clamp so that the lower clamp can clamp the wire rod; A lower mold including lower equal interval maintaining means for allowing the lower clamp to maintain equal intervals;

An upper plate in a liftable state; A plurality of upper clamps installed on the lower surface of the upper plate so as to be movable in a straight line, the plurality of upper clamps being offset from the lower clamps; An upper tightening means installed on each upper clamp to tighten the upper clamp so that the upper clamp clamps the wire rod; The upper mold is made of an upper mold having an upper equal interval maintaining means for maintaining the equal intervals of the upper clamp; is an apparatus for manufacturing a seat spring for an automobile, characterized in that consisting of.

Fourth, the wire rod portion clamped by the first and second clamping means by clamping the straight wires alternately at equal intervals by the first and second clamping means alternately, and interlocking the first and second clamping means. The wire part is a horizontal element, and the non-clamped wire rod portion is a vertical element is a method for manufacturing a seat spring for automobiles, characterized in that the zigzag spring is molded.

Fifth, the material seating step of seating a straight wire rod on the lower clamps arranged at equal intervals; A wire clamping step of lowering the upper clamp between each lower clamp, wherein the upper and lower clamps clamp the wire when the upper clamp is lowered to the position of the wire rod; Starting the forming of the wire rod by lowering the upper clamp further from the clamped position, and the trapezoidal zigzag spring is formed while autonomously narrowing between each of the upper clamp and the lower clamp by molding force, and at the same time, the upper clamp Primary molding step to release the clamping of the; A secondary forming step of forming a rectangular zig-zag spring by vertically forming vertical elements of the zig-zag spring inclined form by collecting the upper clamp and the lower clamp in close contact with each other; And a product collection step of collecting the zigzag spring by allowing the upper clamp to rise and the clamping of the lower clamp to be released.

Sixth, the material seating step of seating a straight wire rod on the lower clamp disposed at equal intervals; A wire clamping step of lowering the upper clamp between each lower clamp, wherein the upper and lower clamps clamp the wire when the upper clamp is lowered to the position of the wire rod; Starting the forming of the wire rod by lowering the upper clamp further from the clamped position, the primary forming step to form a trapezoidal zigzag spring while narrowing autonomously between each of the upper clamp and the lower clamp by the forming force ; A secondary forming step of forming a rectangular zig-zag spring by forming vertically vertical elements of the zig-zag spring which were formed to be inclined by collecting the upper and lower clamps and the end forming blocks in close contact with each other; Unclamping an upper clamp and a lower clamp from the zigzag spring; It is a method for manufacturing a seat spring for an automobile, characterized in that consisting of; product collection step to collect the zigzag spring by raising the upper clamp.

EMBODIMENT OF THE INVENTION Hereinafter, embodiment of this invention is described in detail based on an accompanying drawing.

4 is an overall configuration diagram of a seat spring manufacturing apparatus according to the present invention, Figure 5 is a detailed configuration diagram of a seat spring manufacturing apparatus according to the present invention, Figure 6 is a seat spring manufacturing apparatus according to the present invention Figure 2 is a detailed configuration of Figure 2, Figure 7 is an assembled perspective view of the lower clamp in the seat spring manufacturing apparatus according to the present invention, Figure 8 is an exploded perspective view of the lower clamp in the seat spring manufacturing apparatus according to the present invention, Figure 9 Is an exploded perspective view of the lower tightening block in the seat spring manufacturing apparatus according to the present invention, Figure 10 is a longitudinal cross-sectional view of the coupling state of the lower tightening block in the seat spring manufacturing apparatus according to the present invention, Figure 11 is a sheet according to the present invention Figure 12 is a view for explaining the interval maintaining means of the spring manufacturing apparatus, Figure 12 is an upper clamp of the seat spring manufacturing apparatus according to the present invention, Figure 13 is in accordance with the present invention 14 is an exploded perspective view of the upper clamp in the seat spring manufacturing apparatus, Figure 14 is an exploded perspective view of the upper tightening block in the seat spring manufacturing apparatus according to the present invention, Figure 15 is an upper tightening block in the seat spring manufacturing apparatus according to the present invention Figure 16 is a longitudinal cross-sectional view of the coupling state, Figure 16 is a view for explaining the interval maintaining means of the seat spring manufacturing apparatus according to the present invention, Figure 17 is a view for explaining the pusher and puller of the seat spring manufacturing apparatus according to the present invention. FIG. 18 is a view illustrating a pusher and a puller of the seat spring manufacturing apparatus according to the present invention. FIG. 19 is a view illustrating a pusher and a puller of the seat spring manufacturing apparatus according to the present invention. Is a conceptual diagram for explaining the puller of the seat spring manufacturing apparatus according to the present invention, Figure 21 is a puller of the seat spring manufacturing apparatus according to the present invention 22 is a conceptual diagram for explaining another embodiment, FIG. 22 is a view for explaining a method for manufacturing a seat spring according to the present invention, and FIG. 23 is a view for explaining the function of a molding groove in the clamp of the seat spring manufacturing apparatus according to the present invention. 24 is a cross-sectional view illustrating a clamping and a clamping release state of the upper clamp in the seat spring manufacturing apparatus according to the present invention, and FIG. 25 illustrates a clamping state of the lower clamp in the seat spring manufacturing apparatus according to the present invention. Figure 26 is another embodiment of the seat spring manufacturing apparatus according to the present invention, Figure 27 is a perspective view of the assembly of the lower clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention, Figure 28 is the present invention In another embodiment of the seat spring manufacturing apparatus according to the exploded perspective view of the upper clamp, Figure 29 is In another embodiment of the seat spring manufacturing apparatus according to the state before and after the clamping of the lower clamp, Figure 30 is a view for explaining the equal interval holding means in another embodiment of the seat spring manufacturing apparatus according to the present invention, 31 is an assembled perspective view of the upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention, Figure 32 is an exploded perspective view of the upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention, 33 is an operation state diagram of the upper clamp in another embodiment of the seat spring manufacturing apparatus according to the present invention, Figure 34 is a description of the equal interval maintaining means in another embodiment of the seat spring manufacturing apparatus according to the present invention 35 is a view illustrating a pusher and a puller in another embodiment of a seat spring manufacturing apparatus according to the present invention. Figure 1, Figure 36 is another embodiment of the seat spring manufacturing apparatus according to the present invention, Figure 2 for explaining the pusher and puller, Figure 37 is another embodiment of the seat spring manufacturing apparatus according to the present invention 3 is a view illustrating a pusher and a puller, FIG. 38 is a conceptual view illustrating a puller in another embodiment of the seat spring manufacturing apparatus according to the present invention, and FIG. 39 is a view of the seat spring manufacturing apparatus according to the present invention. In another embodiment, a conceptual diagram for explaining another embodiment of the puller, Figure 40 is a view for explaining another embodiment of the seat spring manufacturing method according to the present invention.

As shown in the drawings, the seat spring manufacturing apparatus 100 of the present invention is installed in a state in which the arrangement intervals can be changed autonomously during the molding of the wire rod 10, a plurality of clamping the linear wire rod alternately at equal intervals First and second clamping means; And movable means for alternately operating the first and second clamping means so that the wire rod is formed into a zigzag spring by the first and second clamping means. At this time, the movable means is a hydraulic or pneumatic cylinder.

The first clamping means is installed in a state capable of linear movement, the lower clamp 220 for clamping the wire rod 10 at equal intervals, and the lower tightening block 230 that serves to tighten the lower clamp It consists of

The second clamping means clamps the wire rod 10 at equal intervals while being installed in a state capable of linear movement, and tightens the upper clamp 320 and the upper clamp for clamping alternately with the lower clamp. The upper fastening block 330 is configured to serve.

In another embodiment, the first clamping means serves to tighten the lower clamp and the lower clamp for clamping the wire rod 10 at equal intervals while being installed in a state capable of linear movement. Composed of the lower tightening means (630),

While the second clamping means is installed in a state capable of linear movement, clamps the wire rod 10 at equal intervals, but tightens the upper clamp 720 and the upper clamp for clamping alternately with the lower clamp 620. The upper fastening means 730 is composed of a role. At this time, the lower tightening means 630 and the upper tightening means 730 is a hydraulic or pneumatic cylinder.

Hereinafter, specific embodiments of the configuration will be described.

First, the seat spring manufacturing apparatus 100 of the present invention is the lower mold 200 is fixed to the frame (not shown), and the lifting cylinder 110 and the column (120) while being located directly above the lower mold (120) It is largely composed of an upper mold 300 that can be elevated by the).

Here, two embodiments of the upper and lower molds are presented.

First, first Example  The detailed configuration of the upper and lower molds will be described.

The lower mold 200 of the first embodiment includes a lower plate 210 as shown in FIGS. 4 to 6; The first guide rail 211 is installed on the upper surface of the lower plate is installed to be able to move linearly along the longitudinal direction of the lower plate, a plurality (two or more) that the wire rod (10) is seated in a horizontal state Lower clamp 220; The second guide rail 212 is installed on the upper surface of the lower plate 210 is installed to be linearly movable along the longitudinal direction of the lower plate, and located between each of the lower plate 210 and the lower mold A plurality of lower tightening blocks 230 which serve to tighten the upper clamps which were opened when the 200 and the upper mold 300 are combined; The lower clamp 220 and the lower tightening block 230 is composed of a lower equal interval maintaining means 240 to maintain the equal intervals.

A detailed configuration of the upper mold of the first embodiment is as follows (see FIGS. 4 to 6).

The upper mold 300 of the first embodiment includes: an upper plate 310 in a liftable state; The plurality of upper clamps 320 are installed to be linearly movable along the longitudinal direction of the upper plate by a third guide rail 311 installed on the lower surface of the upper plate, and correspond to the lower tightening block 230. )Wow; The fourth guide rail 312 is installed on the lower surface of the upper plate 310 to be linearly movable along the longitudinal direction of the upper plate, and is located between each of the upper clamps 320 A plurality of upper tightening blocks 330 positioned to correspond to the lower clamp 220 and tightening the lower clamp 220 that is opened when the lower mold 200 and the upper mold 300 are combined. and; The upper clamp 320 and the upper tightening block 330 is composed of an upper equal interval maintaining means 340 to maintain the equal intervals.

Hereinafter, each component of the lower mold 200 will be described in more detail.

First, the lower clamp 220 is a lower clamp base 221 is installed to be linearly moved along the first guide rail 211 is installed on the upper surface of the lower plate 210 as shown in Figures 5 to 8 Wow; A lower clamp holder 222 fixed to an upper portion of the lower clamp base; It consists of a lower tongs 223 installed on the upper portion of the lower clamp holder.

At this time, the protrusion 223-6 is formed on the surface of the lower clamp 220-1 positioned on the leftmost side of the drawing and the lower clamp 220-8 positioned on the right side of the lower clamp 220.

As shown in FIG. 8, the lower tongs 223 are coupled to the lower clamp base 221 by a pin (p: p) to be rotated, and the first lower tongs 223-1 and also the lower clamp bases. A second lower tong piece 223-2 coupled to the pin 221 and being rotatable, and interposed between the first and second lower tong pieces and the second lower tong piece so as not to apply an external force. It is composed of a lower spring (223-3) for separating the upper side of the first lower tong pieces and the second lower tong pieces.

The lower tongs 223 have clamping grooves 223-4 for clamping the wire rod 10 on the first lower tongs 223-1 and the second lower tongs 223-2. On both sides of the first lower tong piece 223-1 and the second lower tong piece 223-2, a molding groove 223-5 is formed so that the vertical element 21 is inserted when the zigzag spring is formed. ) Is formed.

At this time, the shape of the forming grooves 223-5 formed on both sides of the first and second lower tong pieces 223-1 and 223-2 gradually increase in depth from the top to the bottom of the drawing grooves (deep: d). Deeply formed so that the vertical element 21 of the zigzag spring to be described later can be easily formed in a square shape. The reason why easy molding is possible will be described later.

As shown in FIGS. 9 and 10, the lower tightening block 230 includes a lower body block 231 having an upper open fastening groove 231-1 so that the upper clamp 320 is inserted therein, and the tightening groove 231-. It is composed of a pair of lower liners 232 which are installed on both inner walls of 1) and serve to tighten the upper clamp 320 entering the tightening groove 231-1. In this case, when the number of the lower tightening block 230 is an odd number, the lower tightening block located at the center is fixed to the lower plate 210. If the number of lower tightening blocks is even, the lower clamp positioned at the center of the lower clamps 220 is fixed to the lower plate 210. That is, in consideration of the number of the lower clamp 220 and the lower tightening block 230, the center of the odd numbered ones may be fixed to the lower plate.

In addition, the lower liner 232 is loosely fastened as a screw to the inner wall of the tightening groove 231-1 of the lower body block 231 in the drawing, the upper part is embedded in the lower body block 231 in the drawing The lower liner spring 233 allows the elastic force to be exerted in the direction of tightening the upper clamp 320. Therefore, when the upper clamp 320 is drawn between the lower liner 232 of the lower tightening block 230, the shock between the upper clamp and the lower liner is relieved, and the upper clamp 320 and the lower tightening block 230 Even if the position is not extremely consistent, smooth retraction is possible, and since the lower liner 232 presses the upper clamp 320 by the elastic force of the lower spring 233-3, it is possible to secure clamping.

In this case, although the lower liner spring 233 is illustrated in only one lower liner, the lower liner spring 233 may be installed on both lower liners.

On the inner surface of the both lower liner 232, a tightening surface 232-1 having a width corresponding to the width of the upper clamp 320 is formed to tighten the upper clamp 320 on the upper side, A lowering release surface 232-2 having a width wider than that of the upper clamp 320 is formed at the lower side so that the tightening of the upper clamp 320 is released.

As shown in FIG. 11, the lower equal interval maintaining means 240 may have any structure as long as the lower clamp 220 and the lower tightening block 230 are spaced apart from each other. Looking at one embodiment through the drawings as follows.

A plurality of lower equal interval maintenance links 241 fixedly installed at one side or the other side of the lower clamp 220 and having hooks at one end thereof; The lower locking pin is formed on one side or the other side of the lower tightening block 230, the lower locking pin to be caught by the hook of the lower equal interval maintaining link 241 when the lower clamp and the lower tightening block are spaced apart ( 242).

At this time, the lower equal interval maintaining link 241 should not collide with each other when the lower clamp 220 and the lower tightening block 230 are in close contact with each lower clamp 220 and each lower tightening block ( 230, it should be distributed on both sides.

Therefore, it is assumed that eight lower clamps 220 are installed, and seven lower clamping blocks 230 are installed between the lower clamps, and each lower clamp 220 is disposed from the left side in the drawing. The first lower clamp to the eighth lower clamp (220-1 to 220-8) toward the right, each lower tightening block 230 is the first lower tightening block to the seventh lower tightening block (230-1 to 230) Let's say -7).

In this case, a first lower equal interval maintaining link 241-1 is fixed to one side of the second lower clamp 220-2, and a first lower latch on one side of the second lower tightening block 230-2. The pin 242-1 is formed so that the hook 241-1 ′ of the first lower equally spaced maintenance link 241-1 can be caught.

In addition, a second lower equal interval maintaining link 241-2 is fixed to one side of the third lower clamp 220-3, and the second lower equal interval retaining link 241-2 is described above. 2 is configured to hook the hook (241-2 ') to the first lower locking pin (242-1) of the lower tightening block (230-2). At this time, the first lower equal interval maintaining link 241-1 and the second lower equal interval maintaining link 241-2 are installed in a symmetrical state with each other, and are staggered upward to prevent a collision therebetween.

Accordingly, the second lower clamp 220-2 and the second lower tightening block 230-2 by the first and second lower equally spaced maintenance links 241-1 and 241-2 and the first lower locking pin 242-1. ), It is possible to maintain the same interval between the second lower tightening block (230-2) and the third lower clamp (220-3).

In addition, at one side of the fifth lower clamp 220-5, a third lower equal interval maintaining link 241-3 and a fourth lower equal interval maintaining link 241-4 are installed in opposite directions to each other. 4 A second lower locking pin 242-2 is formed on one side of the lower tightening block 230-4 to which the hook 241-3 'of the third lower equally spaced maintenance link 241-3 is engaged. One side of the fifth lower fastening block 230-5 is provided with a third lower locking pin 242-3 to which the hook 241-4 ′ of the fourth lower equally spaced maintenance link 241-4 is engaged. have.

In addition, a fifth lower equal interval maintaining link 241-5 is installed at one side of the sixth lower clamp 220-6, and the fifth lower equal interval maintaining link 241-5 is described above. 3 Hook 241-5 'is caught by lower locking pin 242-3. At this time, the third, fourth, and fifth lower equally spaced maintenance links 241-3, 241-4, and 241-5 are installed at staggered positions to prevent a collision therebetween.

Therefore, the fourth lower tightening block 230-4 and the fifth by the third to fifth lower equal interval maintaining links 241-3, 241-4, 241-5 and the second and third lower locking pins 242-2, 242-3. Between the lower clamps 230-5, between the fifth lower clamp 220-5 and the fifth lower tightening block 230-5, the fifth lower tightening block 230-5 and the sixth lower clamp 220-6 Equal intervals between

In addition, a sixth lower equal interval maintaining link 241-6 is fixedly installed at one side of the seventh lower clamp 220-7 and a seventh lower equal interval maintaining link at one side of the eighth lower clamp 220-8. 241-7 is fixedly installed, and one hook of the seventh lower tightening block 230-7 includes hooks 241-6 'of the sixth and seventh lower equally spaced maintenance links 241-6 and 241-7. 241-7 ') is formed with a fourth lower locking pin 242-4.

Therefore, the seventh lower clamp 220-7 and the seventh lower tightening block 230-7 by the sixth and seventh lower equally spaced maintenance links 241-6 and 241-7 and the fourth lower engaging pins 242-4. ) Between the seventh lower tightening block 230-7 and the eighth lower clamp 220-8.

In addition, an eighth lower equal interval maintaining link 241-8 is fixedly installed on the other side of the first lower clamp 220-1, and a ninth lower equal interval is maintained on the other side of the second lower clamp 220-2. Link 241-9 is fixedly installed, and the hooks 241-8 'of the eighth and ninth lower equally spaced maintenance links 241-8 and 241-9 are provided at the other side of the first lower tightening block 230-1. , 241-9 ') is formed with a fifth lower locking pin 242-5.

Therefore, maintaining the same interval between the first lower clamp 220-1 and the first lower tightening block 230-1, the first lower tightening block 230-1 and the second lower clamp 220-2 It becomes possible.

Further, a tenth lower equal interval maintaining link 241-10 is fixedly installed on the other side of the third lower clamp 220-3, and an eleventh lower equal interval is maintained on the other side of the fourth lower clamp 220-4. A link 241-11 and a twelfth lower equally spaced maintenance link 241-12 are installed, and on the other side of the third lower tightening block 230-3, the tenth and eleventh lower equally spaced maintenance links 241- are provided. The lower hook pin 242-6 to which the hooks 241-10 ′ and 241-11 ′ of the hooks 10 and 241-11 are engaged is formed, and the other side of the fourth lower fastening block 230-4 is formed on the other side. A seventh lower locking pin 242-7 to which the hooks 241-12 ′ of the twelfth lower equally spaced maintenance link 241-12 is engaged is formed.

Thus, between the third lower clamp 220-3 and the third lower tightening block 230-3, between the third lower tightening block 230-3 and the fourth lower clamp 220-4, and the fourth lower clamp. Equal interval between 220-4 and the fourth lower fastening block 230-4 can be maintained.

Finally, a thirteenth lower equal interval maintaining link 241-13 is fixedly installed on the other side of the sixth lower clamp 220-6, and a fourteenth lower part on the other side of the seventh lower clamp 220-7. The interval maintaining link 241-14 is fixedly installed, and the hooks 241-of the thirteenth and fourteenth lower equally spaced maintenance links 241-13 and 241-14 are provided on the other side of the sixth lower tightening block 220-6. 13 'and 241-14', an eighth lower locking pin 242-8 is formed.

Therefore, the equal interval maintenance between the sixth lower clamp 220-6 and the sixth lower tightening block 230-6 and the sixth lower tightening block 230-6 and the seventh lower clamp 220-7 is maintained. It becomes possible.

Next, a detailed configuration of the upper mold of the first embodiment is as follows. Prior to the description, although the upper mold is almost similar to the lower mold except for some elements, it will be described again if repeated to add clarity.

First, the upper clamp 320 is linearly movable along the longitudinal direction of the upper plate by a third guide rail 311 installed on the lower surface of the upper plate 310 as shown in Figures 5, 12, 13 An upper clamp base 321 installed; An upper clamp holder 322 fixedly installed at a lower portion of the upper clamp base; It consists of an upper tong 323 is installed in the lower portion of the clamp holder. In this case, when the upper clamp 320 is odd, the upper clamp positioned at the center thereof is fixed to the upper plate 310. If the upper clamp 320 is even, the upper clamp block positioned at the center of the upper tightening block 330 is upper. Secure to plate.

The upper tongs 323 are coupled to the upper clamp base 321 by a pin (p), the first upper tong pieces 323-1 in a rotatable state, and also the upper clamp base (321) to the pin (p) The second upper tong piece 323-2 facing the first upper tong piece and the first upper tong piece and the second upper tong piece which are coupled to each other while being in a rotatable state are installed to intervene. It is composed of an upper spring (323-3) spaced apart from the upper side of the first upper tong pieces and the second upper tong pieces unless otherwise applied.

The upper tongs 323 are formed with clamping grooves 323-4 for clamping the wire rod 10 under the first upper tongs 323-1 and the second upper tongs 323-2. On both sides of the first upper tong piece 323-1 and the second upper tong piece 323-2, a molding groove may be inserted into the vertical element 21 of the zigzag spring to be described later when the wire 10 is molded. 323-5 is formed.

At this time, the shape of the forming grooves 323-5 formed on both sides of the first and second upper tong pieces 323-1 and 323-2 may have a depth d of the forming grooves gradually from the lower side to the upper side in the drawing. It is formed so that it can be easily molded in a rectangular shape during the molding of the vertical element (21). The reason why easy molding is possible will be described later.

As shown in FIGS. 14 and 15, the upper tightening block 330 includes an upper body block 331 having a lower opening type fastening groove 331-1 so that the lower clamp 220 is inserted therein, and the tightening groove 331-. It is composed of a pair of upper liner 332 which is installed on both inner walls of 1) and serves to tighten the lower clamp 220 to enter the tightening groove.

The upper liner 332 is fastened to the inner wall of the fastening groove 331-1 of the upper body block 331 as one end, but the other end is the upper liner spring 333 is built in the upper body block 331 By the elastic force in the direction to tighten the lower clamp 220 was to be exerted. Therefore, when the lower clamp 220 is drawn between the upper liner 332 of the upper body block 331, the shock between the lower clamp and the upper liner is alleviated, and the lower clamp 220 and the upper body block 331 Even if the position is not very consistent, smooth retraction is possible, and since the upper liner 332 presses the lower clamp 220 by the elastic force of the upper liner spring 333, it is possible to secure clamping.

In this case, although the upper liner spring 333 is illustrated as being installed only on one side upper liner 332, the upper liner spring 333 may be installed on both upper liners.

In addition, unlike the lower liner 232, the inner surface of both upper liners 332 has only a tightening surface 332-1.

As shown in FIG. 6, the lower clamp 220-located at the leftmost side is formed on the inner wall of the upper liner of the upper tightening block 330 located at the leftmost side in which the lower clamp 220-1 is located at the leftmost side. A slot 332-2 into which the protrusion 223-6 of 1) is inserted is formed, and the upper tightening block 330 is located at the rightmost side to be joined with the lower clamp 220-8 positioned at the rightmost side. The slot 332-2 into which the protrusion 223-6 of the lower clamp positioned at the rightmost side is inserted is also formed on the inner wall of the upper liner 332 of -8).

The upper equal interval maintaining means 340 may have any structure as long as the upper clamp 320 and the upper tightening block 330 can be spaced apart when the upper clamp block 330 is spaced apart from each other. Looking at one embodiment through the drawings as follows.

A plurality of upper equally spaced maintenance links 341 fixedly installed at one side or the other side of the upper clamp 320 and having hooks at one end thereof; Is formed on one side or the other side of the upper tightening block 330, when the upper clamp and the upper tightening block is caught by the hook of the upper equal interval maintaining link 341 so that the interval is equally spaced interval locking pin ( 342).

At this time, each of the upper equal interval maintaining link 341 should not collide with each other when the upper clamp 320 and the upper tightening block 330 is in close contact with each upper clamp 320 and each upper tightening block ( 330 should be distributed on both sides.

Therefore, it is assumed that seven upper clamps 320 are installed, and eight upper tightening blocks 330 are installed between each of the upper clamps. First upper clamp to seventh upper clamp (320-1 to 320-7), and each of the upper tightening block 330 is the first upper tightening block to the eighth tightening block (330-1 to 330-8) Let's say

In this case, at one side of the first upper clamp 320-1, a first upper equal interval maintaining link 341-1 and a second upper equal interval maintaining link 341-2 are fixedly installed, and a second upper clamp One side of the 320-2 is a third upper equal interval maintaining link 341-3 is fixedly installed, one side of the first upper tightening block 330-1, the first upper equal interval maintaining link (341-) A first upper locking pin 342-1 is formed to hook the hook 341-1 'of 1), and the second and third upper equal interval maintaining links are formed at one side of the second upper tightening block 330-2. The second upper locking pins 342-2, to which the hooks 341-2 'and 341-3' of the 341-2 and 341-3 are engaged, are formed. At this time, the first, second, and third upper equal interval maintaining links 341-1, 341-2, 341-3 are staggered with each other to prevent interference.

Therefore, between the first upper tightening block 330-1 and the first upper clamp 320-1, between the first upper clamp 320-1 and the second upper tightening block 330-2, the second upper tightening Equal spacing between the block 330-2 and the second upper clamp 320-2 may be maintained.

In addition, fourth and fifth upper equal interval maintaining links 341-4 and 341-5 are fixedly installed at one side of the fourth upper clamp 320-4, and a sixth upper part and the like at the fifth upper clamp 320-5. The gap maintaining link 341-6 is fixedly installed. One side of the fourth upper tightening block 330-4 is formed with a third upper locking pin 342-3 that catches the hook 341-4 ′ of the fourth upper equally spaced maintenance link 341-4. And a fourth of the hooks 341-5 'and 341-6' of the fifth and sixth upper equally spaced maintenance links 341-5 and 341-6 on one side of the fifth upper tightening block 330-5. An upper locking pin 342-4 is formed.

Accordingly, between the fourth upper tightening block 330-4 and the fourth upper clamp 320-4, between the fourth upper clamp 320-4 and the fifth upper tightening block 330-5, and the fifth upper tightening block Equal intervals between the block 330-5 and the fifth upper clamp 330-5 can be maintained.

In addition, at one side of the sixth upper clamp (320-6) and one side of the seventh upper clamp (320-7), the seventh and eighth upper equal interval maintaining link (341-7,341-8) is fixed, respectively, A fifth upper catch at which the hooks 341-7 'and 341-8' of the seventh and eighth upper equally spaced maintenance links 341-7 and 341-8 are simultaneously caught on one side of the seventh upper tightening block 330-7 Fins 342-5 are formed.

Therefore, an equal interval between the sixth upper clamp 320-6 and the seventh upper clamp block 330-7 and the seventh upper clamp block 330-7 and the seventh upper clamp 320-7 Maintenance is possible.

In addition, a ninth upper equally spaced maintenance link 341-9 is fixedly installed at the other side of the second upper clamp 320-2, and at the other side of the third upper clamp 320-3, the tenth and eleventh upper portions are disposed. Equally spaced maintenance link (341-10,341-11)) is fixedly installed, the other side of the third upper tightening block (330-3) hooks of the ninth, 10 upper equally spaced maintenance link (341-9,341-10) (341-9 ', 341-10')) at the same time, the sixth lower locking pin 342-6 is formed, and the other side of the fourth upper tightening block 330-4 maintains the first upper equal interval. A seventh upper locking pin 342-7 to which the hook 341-1 ′ of the link 341-1 is engaged is formed.

Therefore, between the second upper clamp 320-2 and the third upper tightening block 330-3, between the third upper tightening block 330-3 and the third upper clamp 320-3, and the third upper portion Equal spacing between the clamp 320-3 and the fourth upper tightening block 330-4 may be maintained.

In addition, a twelfth upper equal interval maintaining link 341-12 is fixedly installed on the other side of the fifth upper clamp 320-5, and a thirteenth, fourteen upper portion, etc. on the other side of the sixth upper clamp 320-6. Spacing retaining links (341-13, 341-14) are fixed to each other, the other side of the sixth upper tightening block (330-6) hooks of the twelfth, thirteenth equally spaced maintaining link (341-12, 341-13) ( Eighth upper engaging pin (342-8) which is caught at the same time is formed, the other side of the seventh upper tightening block (330-7) hooks (341-) of the fourteenth upper equally spaced maintenance link (341-14) 14 ') is provided with a ninth upper locking pin 342-9.

Thus, between the fifth upper clamp 320-5 and the sixth upper tightening block 330-6, between the sixth upper tightening block 330-6 and the sixth upper clamp 320-6, and the sixth upper clamp It is possible to maintain the same interval between the (330-7) and the seventh upper tightening block (330-7).

Finally, a fifteenth upper equally spaced maintenance link 341-15 is fixedly installed on the other side of the seventh upper clamp 320-7, and the fifteenth on the other side of the eighth upper tightening block 330-8. A tenth upper locking pin 342-10 to which the hooks 341-15 ′ of the equally spaced maintenance link 341-15 is engaged is formed.

Therefore, it is possible to maintain equal intervals between the seventh upper clamp 320-7 and the eighth upper tightening block 330-8.

As shown in FIGS. 5, 6, 16, 17, and 18, the left end of the wire rod 10 is disposed on the upper tightening blocks 320-1 and 320-8 located at the left and right sides of the upper tightening blocks 330. An end forming block 334 for bending the right end downward is provided.

The end forming block 334 is for bending both ends of the wire rod 10 seated on the lower clamp 220 downward, together with the upper mold 300 is lowered toward the lower mold 200. Along with the upper tightening block 330 is pressed down to both ends of the wire rod 10 to be finished to bend vertically.

Meanwhile, as shown in FIGS. 17, 18, and 19, the upper and lower clamps 320 and 220 and the upper and lower fasteners are coupled to both sides of the lower plate 210 while the upper mold 300 and the lower mold 200 are combined. A pusher 400 is installed to collect the blocks 230 and 330 to be in close contact with each other.

The pusher 400 is applied to a hydraulic or pneumatic cylinder which is installed on both sides of the lower plate 210 via the lower bracket 213.

As shown in FIGS. 17, 18, 19, and 20, the upper and lower clamps 320, 220 and the upper and lower sides of the lower plate 210 and the upper plate 310 were collected when the pusher 400 was returned to its original position. Pullers 500 are installed to pull outward so that the spaces between the lower tightening blocks 230 and 330 are spaced apart from each other.

Here, the puller 500 (spring-type puller) is supported to be linearly movable on the lower bracket 213 installed on both sides of the lower plate 210, each one end of the lower clamp 220, the leftmost and the most A pair of lower puller rods 510 each coupled to a clamp positioned on the right side; A lower compression spring 520 which is installed between the other end of each lower puller rod and an outer surface of the lower bracket 213; It is supported by the upper bracket 313 installed on both sides of the upper plate 310 to be linearly movable, each end is coupled to each of the tightening block located on the left and rightmost of the upper tightening block 330 A pair of upper puller rods 530; The upper compression spring 540 is provided between the other end of each upper puller rod and the outer surface of the upper bracket 313.

On the other hand, the puller 500a may be configured in other ways. For example, as shown in FIG. 21, a pair of lower cylinders in which cylinder rods are coupled to clamps positioned at the left and right sides of the lower clamps 220, respectively, may be applied while being supported by the lower brackets 213, respectively. In addition, a pair of upper cylinders, each of which is supported by the upper bracket 313 and coupled to the clamps positioned at the leftmost and right sides of the upper clamp 320, may be applied. Here, the lower cylinder and the upper cylinder are operated by hydraulic or pneumatic.

The following describes a manufacturing method of a seat spring based on the apparatus of the first embodiment (see FIG. 21). In the method for manufacturing the seat spring of the present invention, the first and second clamping means alternately clamp the linear wire rods at equal intervals, and the first and second clamping means are engaged with each other to engage the first and second clamping means. The wire part clamped by it becomes a horizontal element and the unclamped wire part becomes a vertical element so that the zigzag spring is molded. Looking at this in detail.

(step 1) Wire rod  This is the step of seating.

Since the lower mold 200 and the upper mold 300 are spaced apart from each other, the wire 10 is seated on the lower tongs 223 of the lower clamp 220 installed at equal intervals on the lower mold 200. At this time, the lower clamp of the lower clamp is in a state that is open to the extent that the mounting of the wire rod is to be able to seat the wire rod.

(step 2) By upper and lower clamp Wire rod Clamping  Step.

Lower the upper mold 300 toward the lower mold (200). Then, the upper clamp 320 of the upper mold 300 is lowered toward the lower tightening block 230 of the lower mold 200, the upper tightening block 330 of the upper mold 300 of the lower mold 200 The lower clamp 220 is lowered.

When the upper clamp 320 begins to be drawn into the lower liner 232 of the lower tightening block 230 in the descending process, the upper clamp 323 of the opened upper clamp 320 is tightened and the wire 10 ) Is to be clamped, and the lower clamp 220 which is opened when the lower clamp 223 of the lower clamp 220 starts to be introduced into the upper liner 332 of the upper tightening block 330 which is simultaneously lowered. The tongs 223 are tightened to clamp the wire rod 10.

(step 3) Wire rod  As the primary molding step, Wire rod  Molding into a trapezoidal shape.

From the state in which the wire rod 10 is clamped by the upper clamp 320 and the lower clamp 220, the lower clamp 220 is fixed and the lower liner of the lower tightening block 230 is fixed. When lowered deeply between the (232), the wire rod 10 is the portion clamped by the upper clamp 320 and the lower clamp 220 becomes a horizontal element 22 and the wire rod portion that is not clamped to each clamp is each clamp And vertical element 21 is formed by the interval between the tightening block is to form a zigzag spring 20 of the trapezoidal shape eventually.

In this process, each of the clamps 320 and 220 and each of the upper and lower fastening blocks 330 and 230 are assembled to each other, and the wire rod 10 is in the state of connecting the clamps 320 and 220 to each other. When 10) is formed in a zigzag shape, each clamp and the upper and lower tightening blocks are pulled to the center by the center clamp and the tightening block fixed to each plate by the wire rod, so that the interval between each clamp and each tightening block is narrow. The loss of the array spacing occurs autonomously. At this time, the interval between the clamp and each tightening block is narrowed in proportion to the length of the vertical element 21 of the zigzag spring.

This change in arrangement interval is indispensable. If there is no change in the spacing of the clamps 320 and 220 and the tightening block, it will be the result of breaking the vertical element 21 of the wire rod 10 during press molding. Change must be made.

In particular, the lower tightening block disposed in the middle of the lower tightening block 230 is fixed to the lower plate 210, the upper clamp disposed in the middle of the upper clamp 320 is fixed to the upper plate 310, respectively Therefore, when the arrangement interval described above is changed, the arrangement interval of each clamp and the tightening blocks arranged at both sides with respect to the upper clamp and the lower tightening block positioned at the center is adjusted autonomously to narrow.

At this time, each of the tightening blocks (330, 230) and each clamp (320, 220) is not in close contact, but only a gap between them will have a certain interval. Because of this spacing, the vertical elements 21 of the wire rod 10 are molded in an inclined state rather than forming an integer state. Thus, in the form of forming the wire rod in which primary molding is completed, the horizontal element 22 and the inclined vertical element 21 are continuously connected to form a substantially trapezoidal shape.

In addition, both ends of the wire rod 10 are molded vertically by the end forming blocks 334 installed to be coupled to each of the upper tightening blocks positioned at the left and right sides of the upper tightening block 330. The end forming block 334 does not have any special feature because it only needs to perform the task of bending the end of the wire rod 10 downward.

Meanwhile, as shown in FIG. 24, in the first molding process, the upper clamp 320 passes through the lower liner 232 of the lower tightening block 220, and the tightening surface 232-is disposed on the upper side of the lower liner 232. 1) is formed to allow the upper clamp 320 to clamp the wire 10, while the lower release liner 232 is formed on the lower side of the lower liner 232 in the process of forming the primary The upper clamp 320 has already been released. This is to raise the upper mold 300 if the upper clamp 320 continues to clamp the wire rod 10 in the process of raising the upper mold 300 after completing the secondary molding to be described later. Unable to clamp the wire in advance.

However, as shown in FIG. 25, only the tightening surface 332-1 is formed on the upper liner 332 of the upper tightening block 330 so that the wire rod while the lower clamp 220 is tightened by the upper tightening block 330. Is clamping.

(step 4) Wire rod  Secondary molding step, trapezoidal Wire rod  This is the step of finishing forming a square zigzag spring.

In order to completely adhere the upper and lower clamps 320 and 220 and the upper and lower tightening blocks 330 and 230 that are slightly spaced apart after the first molding, the pushers 400 installed on both sides of the lower plate 210 are operated to operate the clamps. (320,220) and the tightening block (330,230) to be in close contact by pushing toward the clamp and tightening block in the center fixed to each plate (310,210).

In this process, each vertical element 21 of the zigzag spring 20 is formed into the vertical grooves 323-5, 223-5 formed in the side of each clamp (320, 220) is formed in a vertical state.

That is, the forming grooves 323-5 of the upper clamp 320 are formed to have a shallower depth d as they go from the top to the bottom of the drawing, and conversely, the forming grooves 223-5 of the lower clamp 220 are formed. As the depth (d) is formed deeper from the top to the bottom in the drawing, the upper clamp 320 and the lower clamp as shown in Figure 22 during the secondary molding to closely contact each clamp (320,220) and tightening blocks (330,230) As the 220 is in close contact, a wedge-shaped zigzag spring can be made. However, as shown in FIG. 22, since the wire rod 10 itself has elasticity, a slight restoring force is applied in the opposite direction to be molded, so that the mother-fiber is actually formed into a rectangular zigzag spring 20.

( step  5) Demold  And as a product collection step, the upper and lower molds Demonstrating  Collecting zigzag spring from mold is completed.

As mentioned in step 3 above, since the upper clamp 320 has already released the clamping of the wire rod 10 during the primary molding, the upper mold 300 does not have any problem when the molding is completed.

Therefore, when the upper mold 300 rises from the lower mold 200 and is demoulded, the lower clamp 220 is released from the restraint of the upper tightening block 330, and at the same time, the lower clamp 220 of the lower clamp 220 The 223 may release the clamping of the zigzag spring 20 while the first lower tong piece 223-1 and the second lower tong piece 223-2 are opened by the elastic force of the lower spring 223-3. . This allows the zigzag spring 20 to be collected from the device.

When the zigzag spring 20 is removed from the lower mold 200, in the case of the spring puller 500, the clamps 320 and 220 and the elastic restoring force of the lower compression spring 520 and the upper compression spring 540 are removed. The tightening blocks 330 and 230 are opened, and in the process of opening, the upper and lower equal interval maintaining means 340 and 240 are no longer opened, and thus the first state is maintained.

On the other hand, in the case of the cylindrical puller 500a, even if the zigzag spring 20 is removed, the respective clamps 320 and 220 and the tightening blocks 330 and 230 do not spontaneously open, but only when the cylindrical puller 500a is operated, the respective clamps ( Since the spacing between the 320 and 220 and the tightening blocks 330 and 230 is widened, the user can remove the zigzag spring 20 more stably from the viewpoint of the user.

( step  6) Clear the gap between the lower clamp and upper clamp Evenly spaced  Rearrangement.

The upper and lower clamps are spaced apart by operating the cylindrical puller 500a connected to the lower clamp 220 positioned at the left and right sides, or by opening the clamps to the outside by the spring puller 500. Are widened. In this process, the upper and lower clamps and the end forming blocks are connected by the upper equal interval maintaining means 340 and the lower equal interval maintaining means 240 so as to limit the gap between the equal intervals between the clamps. do.

( step  7) Zigzag spring Both ends By a certain angle Bends .

If the former molding process was a two-dimensional molding process, this last process is a three-dimensional molding process. In order to mount the zigzag spring 20 to the vehicle seat frame, both ends of the zigzag spring 20 should be bent by a certain angle (acute angle) to the front side in a horizontal state with respect to the installation position. However, this molding process cannot be performed by the advanced manufacturing apparatus, so it must be molded through a separate post process. This completes all the manufacturing process of the zigzag spring 20.

Next, second Example  The detailed configuration of the upper and lower molds will be described.

The upper and lower molds of the second embodiment have a configuration feature that allows the cylinder to replace the role of the tightening block instead of excluding the tightening block to enable clamping of the clamp as compared with the first embodiment. As a result, the method is also changed.

First, the lower mold 600 of the second embodiment includes a lower plate 610 as shown in FIG. A plurality of lower clamps 620 are installed to be linearly movable along the longitudinal direction of the lower plate 610 by a lower guide rail 611 installed on the upper surface of the lower plate, and the wire rod 10 is seated in a horizontal state. Wow; A lower tightening means (630) installed in the lower clamp to selectively tighten the lower clamp so that the lower clamp can clamp the wire rod (10); The lower clamp is composed of a lower equal interval maintaining means 640 to maintain the equal intervals.

In addition, the upper mold 700 of the second embodiment includes: an upper plate 710 in a liftable state; A plurality of upper clamps 720 installed on the lower surface of the upper plate such that the upper guide rails 711 are linearly movable along the longitudinal direction of the upper plate 710, and are offset from the lower clamps; Upper tightening means (730) installed on each upper clamp to tighten the upper clamp (720) so that the upper clamp can clamp the wire rod (10); An end forming block 750 installed at both sides of the upper plate 710 to be linearly movable along the upper guide rail 711 to bend both ends of the wire rod 10 downward; The upper clamp 720 and the end forming block 750 is composed of an upper equal interval maintaining means 740 to maintain the equal intervals.

Hereinafter, each component of the lower mold 600 of the second embodiment will be described in more detail.

First, the lower clamp 620, as shown in Figure 27, 28 and the lower clamp base 621 is installed to be linearly moved along the lower guide rail 611 is installed on the upper surface of the lower plate 610 and ; A lower clamp holder 622 fixedly installed on an upper portion of the clamp base; It consists of a lower tongs 623 installed on the upper portion of the clamp holder.

The lower tongs 623 are coupled to or fixed to the lower clamp base 621 by the first lower tongs 623-1 and the pins p to the lower clamp base 621. The first lower tong piece and the second lower tong piece 623-2, which are installed between the first lower tong piece and the second lower tong piece and are not provided with an external force. It consists of a lower spring (623-3) for separating the upper side of the lower tong piece.

The lower tongs 623 are formed with a clamping groove 623-4 for clamping the wire rod 10 on the first lower tongs 623-1 and the second lower tongs 623-2. On both sides of the first lower tong piece 623-1 and the second lower tong piece 623-2, forming grooves 623 to be molded with the vertical element 21 inserted when the wire rod 10 is formed. -5) is formed.

At this time, the shape of the forming grooves 623-5 formed on both sides of the first and second lower tong pieces 623-1 and 623-2 gradually increases from the top to the bottom of the drawing grooves. It is formed to be deep so that it can be easily molded in a rectangular shape when forming the vertical element (21). The reason why easy molding is possible will be described later.

The lower fastening means 630 is installed on one side or both sides of each of the lower clamps 620 to push both lower clamping pieces 623-1 and 623-2 of the lower clamp 620 simultaneously or to push only one lower clamping piece. This is a hydraulic or pneumatic cylinder that allows clamping (shown by pushing only one clamp in the drawing).

The lower equal interval maintaining means 640 is installed at one side and the other side of each of the lower clamp 620, respectively, and the lower equal interval maintaining link 641, and the adjacent lower equal interval maintaining links are hooked to each other at equal intervals. This is to be maintained. However, when the lower equidistant maintaining link 641 is installed only on one side of the lower clamp 620, the interference problem occurs between the links.

Looking at this in more detail as follows.

Assuming that the first to eighth lower clamps 620-1 to 620-8 are configured, the first, third, fifth, and seventh lower clamps 620-1,620-3,620-5,620- of the first to eighth lower clamps. On one side of 7) is fixed to the lower equal interval maintaining link (640a) in the forward direction, and the second, fourth, sixth, eighth of the first to eight lower clamps (620-2, 620-4, 620-6, 620-8) One side is configured by fixing the lower equal interval maintaining link 640a in the forward direction and the reverse lower equal interval maintaining link 640b to be caught.

In addition, the other side of the second, fourth, and sixth lower clamps 620-2, 620-4, 620-6 of the first to eighth lower clamps are fixedly installed with lower equal interval retaining links 640c in the forward direction, and the first to eighth lower portions. Each of the third, fifth, and seventh lower clamps 620-3, 620-5, and 620-7 of the clamps is formed by fixing the forward lower equally spaced maintenance link 640c and the reverse lower equally spaced maintenance link 640d. It is possible to maintain close contact between the clamps and to maintain the same spacing while avoiding the interference between the links. This is only one embodiment, and if the same operation is possible, other embodiments can be applied, of course.

Hereinafter, each component of the upper mold 700 of the second embodiment will be described in more detail.

First, the upper clamp 720, the upper clamp base 721 is installed to be linearly moved along the upper guide rail 711 is installed on the lower surface of the upper plate 710 as shown in Figure 30 to 32 ; An upper clamp holder 722 fixedly installed at a lower portion of the upper clamp base; It consists of an upper tong 723 is installed in the lower portion of the upper clamp holder.

The upper tongs 723 are pins (p) coupled to the upper clamp base (721) and the first upper tongs (723-1) that can be rotated or fixed, and the pins on the upper clamp base (721) (p) a first upper portion unless an external force is applied between the second upper tong piece 723-2 and the first upper tong piece and the second upper tong piece, which are coupled and rotatable; It consists of an upper spring (723-3) for separating the lower side of the forceps piece and the second upper forceps piece.

The upper tongs 723 are formed with a clamping groove 723-4 for clamping the wire rod 10 on the first upper tongs 723-1 and the second upper tongs 723-2. On both sides of the first upper tong piece 723-1 and the second upper tong piece 723-2, the molding groove 723 is formed to be molded while the vertical element 21 is inserted when the wire rod 10 is molded. -5) is formed.

At this time, the shape of the forming grooves 723-5 formed on both sides of the first and second upper tong pieces 723-1 and 723-2 gradually increases in depth from the lower side of the drawing grooves. It is formed to be deep so that it can be easily molded in a rectangular shape when forming the vertical element (21). The reason why easy molding is possible will be described later.

The upper tightening means 730 is installed on one side or both sides of each upper clamp 720 to push both upper clip pieces 723-1, 723-2 of the upper clamp 720 at the same time or to push only one lower clip piece This is a hydraulic or pneumatic cylinder that allows clamping (shown by pushing only one clamp in the drawing).

The upper equal spacing retaining means 740 is provided with upper equal spacing retaining links 741 on one side and the other side of each upper clamp 720, respectively, as shown in FIG. 34, and adjacent upper equal spacing retaining links hook each other. It is to maintain the equal intervals by causing the jam. However, when the upper equal interval maintaining link 741 is installed only on one side of the upper clamp 720, it is preferable to disperse the two sides properly as the interference problem occurs between the links.

Looking at this in more detail as follows.

First to seventh upper clamps 720-1 to 720-7 are configured, and first and second ends before the first upper clamp 720-1 and after the seventh upper clamp 720-7. Assuming that the forming blocks 750-1, 750-2 are installed, one side of the first, third, fifth, seventh upper clamps 720-1, 720-3, 720-5, 720-7 among the first to seventh upper clamps is forward. The upper equal interval retaining link 740a, and the second, fourth, and sixth upper clamps 720-2,720 of the first to seventh upper clamps and the first and second end forming blocks 750-1 and 750-2. One side of the -4,720-6 and the second end forming block 750-2 is configured by fixing the forward equally spaced maintenance link 741a in the forward direction and the reverse upper equally spaced maintenance link 741b.

In addition, the other end of the first end forming block 750-1 and the second, fourth, and sixth upper clamps 720-2, 720-4, 720-6 of the first to seventh upper clamps may have an upper equal interval retaining link ( 720c) is fixedly installed, and the other side of the third, fifth, and seventh upper clamps 720-3, 720-5, 720-7 among the first to seventh upper clamps is connected to the forward upper equal interval maintaining link 720c and the reverse upper part. By fixing the spacing retaining link 720d, it is possible to maintain close contact between clamps while avoiding interference between the links. In addition, as in the lower mold, but only one embodiment, if the same action is possible, other embodiments can also be applied.

On the other hand, as shown in Figure 26, 35, 36, 37, when the upper mold 700 and the lower mold 600 are combined on both sides of the lower plate 610 by the lowering of the upper mold 700, the upper and lower Pushers 800 are installed to bring the clamps 720 and 620 and the end forming blocks 750 into close contact with each other.

The pusher 800 is applied to the hydraulic or pneumatic cylinder which is installed on both sides of the lower plate 610 via the lower bracket 613.

35, 36, 37, 38, and 39, the upper and lower clamps 620, which were collected when the pusher 800 was returned to its original position, on both sides of the lower plate 610 and the upper plate 710. A puller 900 is installed to pull outwards so that the spaces between the upper clamps 720 are spaced apart from each other.

Here, the puller 900 (spring-type puller) is supported to be linearly movable on the lower bracket 613 installed on both sides of the lower plate 610, each one end is the leftmost and the most left of the lower clamp 620 A pair of lower puller rods 910, each coupled to a clamp positioned on the right side; A lower compression spring 920 which is installed between the other end of each lower puller rod and an outer surface of the lower bracket 613; A pair of upper puller rods, which are linearly supported by upper brackets 613 installed on both sides of the upper plate 710, each end of which is coupled to each of the end forming blocks 750-1 and 750-2, respectively. 930; The upper compression spring 940 is provided between the other end of each upper puller rod and the outer surface of the upper bracket 713.

Meanwhile, the puller 900a (cylinder puller) may be configured in other ways. For example, as shown in FIG. 39, a pair of lower cylinders in which cylinder rods are coupled to lower clamps 620-1 and 620-8 positioned on the left and right sides, respectively, is supported by the lower bracket 613. The cylinder rod may be applied to a pair of upper cylinders to which the respective end forming blocks 750-1 and 750-2 are coupled, respectively, while being supported by the upper bracket 613, respectively. Here, the lower cylinder and the upper cylinder are operated by hydraulic or pneumatic.

The following describes a manufacturing method of the seat spring based on the apparatus of the second embodiment (see FIG. 40).

(step 1) Wire rod  This is the step of seating.

Since the lower mold 600 and the upper mold 700 are spaced apart from each other, the wire 10 is seated on the lower tongs 623 of the lower clamp 620 installed at equal intervals in the lower mold 600. At this time, the clamp of the lower clamp is in the open state to allow the wire rod to be seated, so that the wire rod can be seated.

(step 2) By upper and lower clamp Wire rod Clamping  Step.

The upper mold 600 is lowered toward the lower mold 700. Then, the upper clamp 720 of the upper mold 600 is lowered between the lower clamp 620 of the lower mold 700.

When the upper clamp 720 reaches the wire rod 10 seated on the lower clamp 620 in the descending process, the upper fastening means 730 is advanced to operate the first upper tong piece of the upper clamp 720 ( 723-1) or by tightening the upper tongs 723 while pushing the first and second upper tong pieces 723-1 and 723-2, and clamps the wire rod 10, and at the same time, the lower clamp on the lower clamp 620 side. As the means 630 moves forward to tighten the lower tongs 623 while pushing the first lower tongs 613-1 or the first and second lower tongs 613-1 and 613-2 of the lower clamp 620. The wire rod 10 is clamped. Therefore, the upper clamp 720 and the lower clamp 620 are in a state of clamping the wire rod 10 alternately.

(step 3) Wire rod  As the primary molding step, Wire rod  Molding into a trapezoidal shape.

When the upper clamp 720 is lowered deeply between the lower clamps 620 while the wire rod 10 is clamped by the upper clamp 720 and the lower clamp 620, the wire rod 10 is connected to the lower clamp 620. The clamped portion is left as it is while the portion clamped by the upper clamp 720 is formed by pressing the downward zigzag spring 20 of approximately trapezoidal shape.

In this process, each of the clamps 720 and 620 is in a state of being clamped by the wire rod 10, and thus is in a state connected by the wire rod. Therefore, when the wire rod 10 is deformed by molding, the clamps 720 and 620 are autonomously generated in the arrangement intervals in which the clamps 720 and 620 are narrowed by the deformation force of the wire rod. At this time, the leftmost and rightmost clamps of the lower clamp 620 and the upper clamp 720 are connected by a spring puller 900 or a cylindrical puller 900a, a double cylindrical puller. For example, when the left and rightmost lower clamps are connected to the lower cylinder and the upper cylinder, respectively, but the hydraulic or pneumatic pressure is not applied to each cylinder, the change of the arrangement interval can be made freely. There is a situation. From above

This change in the arrangement interval is indispensable. If there is no change in the spacing of the clamps 720 and 620, the vertical element 21 of the zigzag spring 20 is broken, so the change in the arrangement interval must be made. .

In particular, the lower clamp disposed in the middle of the lower clamp 620 is fixed to the lower plate 610, and the upper clamp disposed in the middle of the upper clamp 720 is fixed to the upper plate 710. When the arrangement interval described in the above is changed, the arrangement interval of the clamps arranged on both sides of the upper clamp and the lower clamp positioned at the center thereof is narrowed.

In this case, each of the clamps 720 and 620 is not in close contact, but only a narrowing therebetween, so that the clamps 720 and 620 have some intervals. Because of this spacing, the vertical element 21 of the zigzag spring 20 is molded in an inclined state without forming an integer state. Thus, in the form of forming the wire rod in which primary molding is completed, the horizontal element 22 and the inclined vertical element 21 are continuously connected to form a substantially trapezoidal shape.

38 and 39, both ends of the wire rod 10 are vertically downwardly formed by end forming blocks 750 that are linearly movable along the upper guide rails 711 on both sides of the upper plate 710. Is molded into. The end forming block 750 does not have a special configuration because it only needs to perform the task of bending the end of the wire rod 10 downward.

(step 4) Wire rod  Secondary molding step, trapezoidal Wire rod  This is the step of finishing forming a square zigzag spring.

In order to completely close the upper and lower clamps 720 and 620, which are slightly spaced apart after the first molding, the pushers 800 installed on both sides of the lower plate 610 are operated to move the clamps 720 and 620 to the respective plates 710 and 610. To the center clamp fixed to the

In this process, each vertical element 21 of the zigzag spring 20 is molded into the vertical grooves while being introduced into the forming grooves 723-5 and 613-5 formed on the side of each clamp.

(step 5) Wire rod Clamping  To release, By wire from  Upper and lower clamp Clamping  It is a step to release.

When the upper and lower clamps 720 and 620 installed in the upper and lower clamps 720 and 620 are retracted from the forward state by removing the force applied to the upper and lower clamps 720 and 620. The tongs 723 and 623 of the lower clamps 720 and 620 are released by the repulsive force of the upper and lower springs 723-3 and 623-3 interposed between the respective tong pieces, thereby releasing the clamping of the wire rod.

(step 6) the product collection step, From the mold  A step of collecting the zigzag spring is completed.

When the upper mold 700 rises from the lower mold 600 and is demoulded, the lower clamps 620 of the lower mold are in a state where the interval is narrowed. In this state, the zigzag spring 20 may be collected from the lower mold 600.

( step  7) Clear the gap between the lower clamp and upper clamp Evenly spaced  Rearrangement.

Either by operating the cylindrical puller (900a) connected to the lower clamp 620 and the end forming block 750 located on the left and right, respectively, or by opening each clamp to the outside by the spring puller (900) The upper and lower clamps have a wider gap. In this process, the upper and lower clamps and the end forming blocks are connected by the upper equal interval maintaining means 740 and the lower equal interval maintaining means 640 to limit the gap between the equal intervals between the clamps. do.

( step  8) Zigzag spring Both ends By a certain angle Bends .

If the former molding process was a two-dimensional molding process, this last process is a three-dimensional molding process. In order to mount the zigzag spring 20 to the vehicle seat frame, both ends of the zigzag spring 20 should be bent by a certain angle (acute angle) to the front side with respect to the installation position. However, this molding process cannot be performed by the advanced manufacturing apparatus, so it must be molded through a separate post process. This completes the manufacturing process of the zigzag spring 20.

As described above, the present invention

The mass production capacity can be improved by manufacturing the seat spring by single molding.

In addition, it is possible to improve the product performance by increasing the molding precision of the product.

Claims (32)

(correction) A plurality of first clamping means installed at equal intervals so that the arrangement intervals can be changed autonomously, and clamping the wire rods at equal intervals from the lower side to the upper side of the wire rod; Arranged alternately with the first clamping means and installed at equal intervals so that the arrangement intervals can be changed autonomously, from the upper side to the lower side of the wire rod, the portion not clamped by the first clamping means of the wire rod is A plurality of second clamping means for clamping at equal intervals; Movable means for moving the first and second clamping means close to each other in an alternating direction such that the wire rod is shaped into a zigzag spring by the first and second clamping means; And a pusher in which the first clamping means and the second clamping means are in close contact with each other so that there are no left and right gaps therebetween so as to be molded into a square zigzag spring. Apparatus for manufacturing seat springs. The method of claim 1, The first clamping means includes a lower clamp for clamping the wire rod at equal intervals and a lower tightening block for tightening the lower clamp while being installed to be linearly movable; The second clamping means is installed in a state capable of linear movement, the upper clamp for clamping the wire rod at equal intervals, but alternately with the lower clamp, and the upper tightening block that serves to tighten the upper clamp An apparatus for manufacturing a seat spring for an automobile, characterized in that the configuration. The method of claim 1, The first clamping means includes a lower clamp for clamping the wire rod at equal intervals and a lower tightening means for tightening the lower clamp while being installed in a state capable of linear movement; The second clamping means is installed in a state capable of linear movement, the upper clamp for clamping the wire rods at equal intervals, but alternately with the lower clamp, and the upper clamping means that serves to tighten the upper clamp An apparatus for manufacturing a seat spring for an automobile, characterized in that the configuration. The method of claim 3, wherein The lower tightening means and the upper tightening means is a manufacturing device for a vehicle seat spring, characterized in that the hydraulic or pneumatic cylinder. The method of claim 1, The movable means is a device for manufacturing a seat spring for an automobile, characterized in that the hydraulic or pneumatic cylinder. Bottom plate; A plurality of lower clamps installed on the upper surface of the lower plate so as to be linearly movable, and the wire rods being seated in a horizontal state; A plurality of lower tightening blocks which are installed on the upper surface of the lower plate so as to be linearly movable, and which tighten the upper clamp to be described later when the upper mold and the lower mold to be described later are located between the lower clamps; A lower mold including lower equal interval maintaining means for allowing the lower clamp and the lower tightening block to maintain equal intervals; An upper plate in a liftable state; A plurality of upper clamps installed on the lower surface of the upper plate so as to be linearly movable and positioned to correspond to the lower tightening block; It is installed to be movable in a straight line on the lower surface of the upper plate, and positioned between the upper clamp and corresponding to the lower clamp, and serves to tighten the lower clamp when the upper mold and the lower mold to be described later. A plurality of upper tightening blocks; The upper mold and the upper mold made of the upper equal interval maintaining means for maintaining the equal interval between the upper clamp and the upper tightening block; manufacturing apparatus for a vehicle spring, characterized in that consisting of. The method of claim 6, A pusher installed at both sides of the lower plate to collect the upper and lower clamps and the upper and lower tightening blocks in close contact with each other when the upper mold and the lower mold are merged by the lowering of the upper mold; And a puller which pulls outward so that the space between each of the upper, lower clamps and upper and lower tightening blocks collected when the pusher is returned to its original position is spaced apart. The method of claim 7, wherein The pusher is an automobile seat spring manufacturing apparatus, characterized in that the hydraulic or pneumatic cylinder is installed via the lower bracket of the lower plate. The method of claim 7, wherein The puller is supported by the brackets installed on both sides of the lower plate to be linearly movable, each one end of the pair of lower puller rods are respectively coupled to the lower clamps located on the left and rightmost of the lower clamps; ; A lower compression spring installed between the other end of each lower puller rod and an outer surface of each bracket; A pair of upper puller rods supported by the brackets installed at both sides of the upper plate so as to be movable linearly, each end portion being coupled to an upper tightening block positioned at the leftmost and rightmost sides of the upper tightening blocks; The upper compression spring is installed between the other end of each upper puller rod and the outer surface of each bracket; manufacturing apparatus for a vehicle seat spring, characterized in that consisting of. The method of claim 7, wherein The puller is an automobile seat spring manufacturing apparatus, characterized in that the hydraulic or pneumatic cylinder. The method of claim 6, The lower clamp may include a lower clamp base installed to be linearly moved along a first guide rail installed on an upper surface of the lower plate; A lower clamp holder fixed to an upper portion of the lower clamp base; The first coupling pin is coupled to the lower clamp holder while being rotatable and facing each other, and a clamping groove for clamping the wire rod is formed on the upper side and a forming groove is formed on both sides so that the vertical element can be inserted when the wire rod is molded. And a lower tong interposed between the second lower tong piece and the first and second lower tong pieces so as to be spaced apart from the lower tong pieces; The upper clamp may include an upper clamp base installed to be linearly moved along a third guide rail installed at a lower surface of the upper plate; An upper clamp holder fixed to the lower portion of the upper clamp base; The first clamp pin is coupled to the upper clamp holder while being rotatable and facing each other, and a clamping groove for clamping the wire rod is formed on the upper side and a molding groove formed on both sides so that the vertical element can be inserted when the wire rod is molded. And an upper tong interposed between the second upper tong piece and the first and second upper tong pieces, the upper tongs being spaced between the upper tong pieces; an apparatus for manufacturing an automotive seat spring. The method of claim 11, The depth of the forming groove of the lower clamp is gradually deeper from top to bottom, the depth of the forming groove of the upper clamp is gradually deeper from bottom to top of the manufacturing apparatus of the automobile seat spring. The method of claim 6, The upper tightening block, the upper body block having a lower open type fastening groove so that the lower clamp is inserted, and a pair of upper parts that are installed on both inner walls of the tightening groove to serve to tighten the lower clamp entering the tightening groove. Consisting of a liner; The lower tightening block, the lower body block having a fastening groove of the upper open type so that the upper clamp is retracted, and a pair of lower parts that are installed on both inner walls of the tightening groove to serve to tighten the upper clamp entering the tightening groove Apparatus for manufacturing a seat spring for an automobile, characterized in that consisting of a liner. The method of claim 13, The upper liner is elastically supported by the upper tightening block to exert an elastic force in a direction tightening the lower clamp by a spring embedded in the upper tightening block, The lower liner is an apparatus for manufacturing a seat spring for an automobile, characterized in that it is elastically supported by the lower tightening block to exert an elastic force in the direction of tightening the upper clamp by a spring built in the lower tightening block. The method of claim 13, The lower liner, the tightening surface is formed on the upper side for tightening the upper clamp, the lower side of the manufacturing apparatus of the automobile seat spring, characterized in that the tightening release surface is formed so that the tightening of the upper clamp is released. The method of claim 6, Of the lower clamps, protrusions are formed on the left and right lower clamps, respectively. The protrusion is formed in the inner wall of the tightening groove of the upper tightening block to be assembled with the lower clamp positioned on the leftmost side, and the protrusion is formed on the inner wall of the tightening groove of the upper tightening block to be combined with the lower clamp positioned at the far right. Apparatus for manufacturing a seat spring for a vehicle, characterized in that the slot is inserted is formed. The method of claim 6, An apparatus for manufacturing an automobile seat spring, characterized in that the end forming block for bending the left end and the right end of the wire rod is installed on the upper left and right upper tightening block. The method of claim 6, The equal interval maintaining means, a plurality of upper, lower equal interval maintaining link is fixedly installed on one side or the other side of each of the upper, lower clamp, having a hook at one end; It is formed on one side or the other side of the upper, lower tightening block, when the upper, lower clamp and the upper, lower tightening block is a plurality of phases to be caught by the hooks of the respective equal interval maintaining link to maintain a constant gap , The manufacturing device of the seat spring for automobiles, characterized in that consisting of a lower locking pin. Bottom plate; A plurality of lower clamps installed on the upper surface of the lower plate so as to be linearly movable, and the wire rods being seated in a horizontal state; Lower tightening means installed on each lower clamp to tighten the lower clamp so that the lower clamp can clamp the wire rod; A lower mold including lower equal interval maintaining means for allowing the lower clamp to maintain equal intervals; An upper plate in a liftable state; A plurality of upper clamps installed on the lower surface of the upper plate so as to be movable in a straight line, the plurality of upper clamps being offset from the lower clamps; An upper tightening means installed on each upper clamp to tighten the upper clamp so that the upper clamp clamps the wire rod; End forming blocks for straight bending on both left and right sides of the lower plate for bending both ends of the wire rod downward; The upper mold and the upper mold made of the upper equal interval maintaining means for the upper clamp and the end forming block to maintain the equal interval; manufacturing apparatus for a vehicle spring characterized in that consisting of. The method of claim 19, A pusher installed at both sides of the lower plate to collect the upper and lower clamps and the end forming blocks in close contact with each other when the upper mold and the lower mold are combined with each other by the lowering of the upper mold; And a puller which pulls outward so as to be spaced apart from each other between the upper and lower clamps and the end forming blocks collected when the pushers are returned to their original positions. The method of claim 19, The pusher is a device for manufacturing a seat spring for an automobile, characterized in that the hydraulic or pneumatic cylinder. The method of claim 20, The puller is supported by the lower brackets installed on both sides of the lower plate to be linearly movable, one end of each of the pair of lower pullers are coupled to the lower clamps located on the left and rightmost of the lower clamps, respectively Rod; A lower compression spring installed between the other end of each lower puller rod and an outer surface of the lower bracket; A pair of upper puller rods linearly movable on upper brackets installed at both sides of the upper plate, each one end of which is coupled to the end forming block; The upper compression spring is installed between the other end of each upper puller rod and the outer surface of the upper bracket; Apparatus for manufacturing a seat spring for an automobile, characterized in that consisting of. The method of claim 20, The puller is an automobile seat spring manufacturing apparatus, characterized in that the hydraulic or pneumatic cylinder. The method of claim 19, The lower clamp may include a clamp base installed to be linearly moved along a guide rail installed on an upper surface of the lower plate; A clamp holder fixed to an upper portion of the clamp base; The clamping grooves are pin-coupled to the clamp holders to be rotatable and face each other, and a clamping groove for clamping the wire rod is formed on the upper side, and forming grooves are formed on both sides so that vertical elements can be inserted when the wire is molded. 2 tongs, interposed between the first and second tong pieces, the forceps made of a spring for spaced apart between these tong pieces; The upper clamp may include a clamp base installed to be linearly moved along a guide rail installed on a lower surface of the upper plate; A clamp holder fixed to a lower portion of the clamp base; The clamping grooves are pin-coupled to the clamp holders to be rotatable and face each other, and a clamping groove for clamping the wire rod is formed on the upper side, and forming grooves are formed on both sides so that vertical elements can be inserted when the wire is molded. 2 tongs, and between the first and second tong pieces interposed between the forceps made of a spring for spaced apart between these tong pieces; manufacturing apparatus for a car seat spring characterized in that consisting of. The method of claim 20, The depth of the forming groove of the lower clamp is gradually deeper from top to bottom, the depth of the forming groove of the upper clamp is gradually deeper from bottom to top of the manufacturing apparatus of the automobile seat spring. The method of claim 19, The upper equal interval maintaining means is a plurality of equal interval maintaining links having hooks at one end while fixedly installed at one side or the other side of the respective upper clamps. Hooks of each other to keep the spacing constant, The lower equal interval maintaining means is a plurality of equal interval maintaining links having hooks at one end while being fixed to one side or the other side of the respective lower clamps, and the equal interval maintaining links when the lower clamps are spaced apart. The device for manufacturing a seat spring for a vehicle, characterized in that the hooks are caught to each other so as to keep the spacing constant. The method of claim 19, The upper and lower tightening means is a manufacturing apparatus for a car seat spring, characterized in that the hydraulic or pneumatic cylinder. The wire rods clamped by the first and second clamping means are clamped by the first and second clamping means, and the straight wires are alternately clamped at equal intervals, and the first and second clamping means are engaged with each other. And the non-clamped wire rod portion is a vertical element, so that the zigzag spring is molded. A material seating step of seating a straight wire rod on the lower clamps disposed at equal intervals; A wire clamping step of lowering the upper clamp between each lower clamp, wherein the upper and lower clamps clamp the wire when the upper clamp is lowered to the position of the wire rod; Starting the forming of the wire rod by lowering the upper clamp further from the clamped position, and the trapezoidal zigzag spring is formed while autonomously narrowing between each of the upper clamp and the lower clamp by molding force, and at the same time, the upper clamp Primary molding step to release the clamping of the; A secondary forming step of forming a rectangular zig-zag spring by vertically forming vertical elements of the zig-zag spring inclined form by collecting the upper clamp and the lower clamp in close contact with each other; And a product collection step of collecting the zig-zag spring by allowing the upper clamp to rise and the clamping of the lower clamp to be released. The method of claim 29, After the product collection step further comprises the step of spaced apart the upper and lower clamps at equal intervals. A material seating step of seating a straight wire rod on the lower clamps disposed at equal intervals; A wire clamping step of lowering the upper clamp between each lower clamp, wherein the upper and lower clamps clamp the wire when the upper clamp is lowered to the position of the wire rod; Starting the forming of the wire rod by lowering the upper clamp further from the clamped position, the primary forming step to form a trapezoidal zigzag spring while narrowing autonomously between each of the upper clamp and the lower clamp by the forming force ; A secondary molding step of forming a square zigzag spring by vertically forming a vertical element of a zigzag spring which is inclinedly formed by collecting the upper and lower clamps and the end forming blocks in close contact with each other; Unclamping an upper clamp and a lower clamp from the zigzag spring; And a product collection step of collecting the zig-zag spring by raising the upper clamp. The method of claim 31, wherein After the product collection step further comprises the step of spaced apart the upper and lower clamps at equal intervals.

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