CN111545690B

CN111545690B - Semi-open type spring clamp forming equipment and forming method thereof

Info

Publication number: CN111545690B
Application number: CN202010420325.0A
Authority: CN
Inventors: 陈黎清; 李钦聚; 钟永春; 王成
Original assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Current assignee: Suzhou Zhaoneng Precision Spring Hardware Co ltd
Priority date: 2020-05-18
Filing date: 2020-05-18
Publication date: 2022-02-08
Anticipated expiration: 2040-05-18
Also published as: CN111545690A

Abstract

The invention provides a semi-open type spring clamp forming device and a forming method thereof, wherein the forming device comprises a base, wherein a forming insert and a material cutting mechanism are arranged on the base; the forming insert is matched with the shape of a product to be formed, and the forming insert is arranged on the base; the forming mechanism is distributed around the forming insert and can extrude the wire rod on the forming insert to form a formed product; the cutting mechanism comprises a material guide block, a push plate and a stamping knife connected with the push plate, the material guide block is arranged on the base, a guide groove for the wire to horizontally pass through is formed in the material guide block, and a first positioning side wall is arranged on one side, close to the stamping knife, of the material guide block; the push plate can be driven by the cutting driving device to push the stamping knife to move along the first positioning side wall to cut off the wire. The invention has high processing efficiency and high processing precision.

Description

Semi-open type spring clamp forming equipment and forming method thereof

Technical Field

The invention belongs to the technical field of clamp forming, and particularly relates to semi-open type spring clamp forming equipment and a forming method thereof.

Background

The structure of semi-open spring clamp is as shown in figure 1, and it contains an arcuate elastically deformable surrounding portion, and the both ends of surrounding portion extend in opposite directions and form the opening, utilize this opening portion to install the clamp on the connecting piece. The semi-open type spring clamp has the advantages of convenience in use, strong clamping force, good sealing performance and the like, can realize quick installation and reliable locking, has better corrosion resistance, and gradually replaces two traditional pipeline connection modes of flanges and welding. The spring clamp can be widely applied to various industries such as automobiles, electronics, aviation and the like, and the demand is increasing.

The common hoop production in the current market generally adopts the steps of firstly stamping a thin plate into a semi-finished product, and then putting the semi-finished product on a rounding forming machine for processing and forming by using a manipulator, and the method needs a plurality of procedures, has low processing efficiency and slow product forming process; the accumulated effect of the positioning error has high debugging technical requirements for operators, which leads to high processing cost.

Disclosure of Invention

The invention aims to provide a semi-open type spring clamp forming device and a forming method thereof, and aims to solve the problems of low processing efficiency and low product processing precision of a semi-open type spring clamp.

The invention provides the following technical scheme:

a semi-open spring clip forming apparatus, comprising:

the base is provided with a forming insert and a cutting mechanism;

the forming insert is matched with the shape of a product to be formed, and is arranged on the base;

the forming mechanism is distributed around the forming insert and can extrude the wire rod on the forming insert to form a formed product;

the cutting mechanism comprises a material guide block, a push plate and a stamping knife connected with the push plate, the material guide block is arranged on the base, a guide groove for a wire to horizontally pass through is formed in the back of the material guide block, and a first positioning side wall is arranged on one side, close to the stamping knife, of the material guide block; the push plate can be driven by the cutting driving device to push the stamping knife to move along the first positioning side wall to cut off the wire.

Preferably, the back of the push plate is provided with a sliding groove, one side of the stamping knife, which is close to the push plate, is provided with a raised sliding block, and the sliding block can move along the sliding groove when the stamping knife punches the wire.

Preferably, the push plate inclines towards the direction of the molding insert, and the sliding groove is parallel to the wire; the die cutter is the form of buckling, the die-cut end of die cutter extend to the shaping side of wire rod and with be an contained angle between the push pedal, the slider is located the link of die cutter and push pedal, the slider extends to the feed end direction of wire rod.

Furthermore, a stamping knife positioning block opposite to the material guide block is installed on the base, the stamping knife is located between the stamping knife positioning block and the material guide block, and the stamping knife can move along the stamping knife positioning block and the material guide block.

Preferably, the back of the die cutter positioning block is provided with a first clearance step for the wire to pass through when being bent, the depth of the first clearance step is matched with the width of the wire, and the first clearance step extends downwards to the lower end of the die cutter positioning block.

Furthermore, one side, close to the punching knife, of the punching knife positioning block is provided with a space avoiding part, a telescopic supporting block is mounted at the space avoiding part on the base and supports a wire, and the punching end of the punching knife can move close to the telescopic supporting block; the telescopic supporting block can be driven by the first driving device to retract into the base.

Preferably, a second clearance step for the wire to pass through is arranged on the back of the stamping knife, the depth of the second clearance step is matched with the width of the wire, and the second clearance step extends downwards to the lower end of the stamping knife; and the cutting edge of the stamping knife is positioned on the horizontal step surface of the second clearance step.

Furthermore, a positioning plate is arranged on the surfaces of the material guide block and the stamping knife positioning block, and covers the stamping knife to limit the stamping knife to move in a vertical plane.

Further, the molding insert comprises a horizontal linear molding wall along which the wire is fed; the forming mechanism comprises a first forming knife perpendicular to the forming wall, and the first forming knife can position the wire on the forming wall.

The forming method of the semi-open type spring hoop forming equipment comprises the following steps:

starting a first driving device to drive the telescopic supporting block to extend out of the base;

feeding the wire rods into the forming insert sequentially along the guide groove of the guide block and the top wall of the telescopic supporting block;

starting the first molding knife to press the wire onto the molding wall of the molding insert;

starting a cutting driving device, and driving a punching cutter to cut off the wire rod obliquely downwards;

the first driving device retracts the telescopic supporting block into the base;

other forming cutters of the forming mechanism act to extrude the wire on the forming insert to form a formed product;

each forming cutter is driven by a forming driving device to retreat and reset.

The invention has the beneficial effects that:

the semi-open spring hoop is formed at one time by the aid of the forming insert, the forming mechanism and the material cutting mechanism, the existing processing mode that a thin plate is firstly stamped and then a semi-finished product is transferred to a rounding forming machine through a manipulator for forming is replaced, procedures are simplified, and processing time is shortened. And because this mechanism is to product one shot forming, need not repeated location wire rod, reduced positioning error, improved the machining precision of clamp.

The stamping knife and the push plate of the cutting mechanism are matched with each other to stamp wires, the stamping knife is bent, and the sliding block of the stamping knife is positioned on the bent part at the top of the stamping knife, so that when the push plate pushes the stamping knife obliquely, the sliding block of the stamping knife can move along the sliding groove on the push plate, the stamping knife can smoothly stamp the wires, and the wires cannot interfere with other forming knives during movement, the problem of small forming operation space is solved, and the working smoothness of the whole forming equipment is ensured.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic view of a semi-open spring clip configuration of the present invention;

FIG. 2 is a schematic front view of the product of the present invention during molding;

FIG. 3 is a schematic front view of the present invention, in which the positioning plate of the blanking mechanism is hidden;

FIG. 4 is a schematic perspective view of the blanking mechanism of the present invention;

FIG. 5 is a schematic view of the back of the blanking mechanism of the present invention;

FIG. 6 is a schematic view of the mounting structure of the telescopic driving apparatus of the present invention;

fig. 7 is a sectional view showing the mounting structure of the first driving means and the telescopic support block on the base according to the present invention.

Labeled as:

100. a semi-open type spring hoop;

200. a base; 210. a push rod aperture; 212. accommodating grooves;

300. a molding mechanism; 310. a first forming knife; 320. a second forming knife; 330. a third forming knife; 340. a fourth forming blade; 350. a fifth forming knife; 360. a sixth forming blade; 370. a seventh forming cutter; 380. forming a guide block;

400. a material cutting mechanism; 410. a material guide block; 411. a guide groove; 412. a first positioning sidewall; 420. pushing the plate; 421. a chute; 430. punching a cutter; 431. punching an end; 432. a slider; 433. a second clearance step; 440. a punching knife positioning block; 441. a second positioning sidewall; 442. a first clearance step; 450. positioning a plate; 460. a telescopic supporting block; 470. a first driving device; 471. a top rod;

500. forming the insert; 510. a forming wall;

600. a telescopic driving device; 610. a push rod;

700. and (3) wire rods.

Detailed Description

The invention discloses a semi-open type spring clamp forming device which is used for forming a semi-open type spring clamp 100 shown in figure 1.

As shown in fig. 2, the molding apparatus includes a base 200, a molding mechanism 300, and a blanking mechanism 400. The base 200 is provided with a mold insert 500 and a blanking mechanism 400.

The mold insert 500 is fitted to the shape of the product to be molded, and the mold insert 500 is installed on the base 200 at a position close to the center.

The molding mechanism 300 is distributed around the molding insert 500, and the molding mechanism 300 may extrude the wire 700 on the molding insert 500 to form a molded product.

The cutting mechanism 400 is located on the feeding path of the wire, and the cutting mechanism 400 can cut the wire to a fixed length before the forming mechanism 300 forms a product.

The wire rod can be by feeding mechanism pay-off to blank mechanism 400 department, and feeding mechanism includes feeding base and pay-off apron, is equipped with the chute feeder with wire rod complex on the feeding base, and the wire rod of coiling can pass on this chute feeder after straightening gets into on base 200, and the pay-off apron covers the wire rod on the chute feeder, makes the wire rod keep level and smooth, and accessible feeding mechanism is according to fixed length pay-off with the wire rod. The wire material can be further leveled by installing a leveling mechanism on the feeding mechanism, the leveling mechanism can be a wire material leveling machine, and the wire material leveling machine is a well-known technology and is not described in detail herein.

The structure and operation of the forming mechanism 300 and the blanking mechanism 400 of the apparatus will be described in detail.

Referring to fig. 3, mold insert 500 includes a substantially horizontal, linear mold wall 510 along which wire is fed to move mold wall 510. The forming mechanism 300 includes a first forming blade 310 perpendicular to the forming wall 510, and the first forming blade 310 is driven by a driving device to move linearly downward, pressing the wire 700, and positioning the wire 700 on the forming wall 510. Therefore, the first forming tool 310 can form a product and assist the cutting mechanism 400 to fix the wire 700, and the punching tool 430 can accurately punch the wire 700 because the left and right ends of the portion of the wire 700 to be punched are fixed.

The forming mechanism 300 further includes a plurality of forming knives for forming other portions of the product, specifically, the forming knives above the wire 700 are a second forming knife 320, a third forming knife 330 located on the left side of the first forming knife 310, and a fourth forming knife 340 located on the right side of the first forming knife 310. The forming knives below the wire 700 are the fifth forming knife 350, the sixth forming knife 360, and the seventh forming knife 370, respectively. The blanking mechanism 400 is located between the fourth forming knife 340 and the fifth forming knife 350. Each forming cutter is driven by a forming driving device to move linearly, and the forming driving device can be a servo hydraulic cylinder or a linear servo electric cylinder. And a forming guide block 380 is arranged between two adjacent forming cutters to guide the movement of the forming cutters.

Referring to fig. 3 to 5, the blanking mechanism 400 includes a material guiding block 410, a push plate 420, and a die cutter 430 slidably connected to the push plate 420, the material guiding block 410 is mounted on the base 200 through screws, a guide slot 411 for a wire to horizontally pass through is disposed on a back surface of the material guiding block 410, and a first positioning sidewall 412 is disposed on a side of the material guiding block 410 close to the die cutter 430; the push plate 420 is driven by the cutting driving device to push the die cutter 430 to move along the first positioning sidewall 412 to cut the wire 700. The blanking drive is preferably a servo hydraulic cylinder. Referring to fig. 3, a sliding groove 421 is formed on the back surface of the push plate 420, a protruding sliding block 432 is formed on one side of the die cutter 430 close to the push plate 420, the width of the sliding block 432 is matched with the width of the sliding groove 421, and when the die cutter 430 punches a wire, the sliding block 432 can move along the sliding groove 421.

Referring to fig. 3, the push plate 420 is inclined toward the molding insert 500, i.e., toward the lower left, and preferably extends in the horizontal direction with an angle a with respect to the horizontal plane, i.e., the slide groove 421. The punch 430 is bent, a punching end 431 of the punch 430 also extends obliquely to the left and downward, and an included angle between the punching end 431 and a horizontal plane is b, and b > a. The connecting end of the die cutter 430 and the push plate 420 horizontally extends toward the feeding end of the wire, and the slider 432 is positioned at the connecting end of the die cutter 430 and the push plate 420. Because the shape of the spring clip limits the forming space, particularly near the cutting mechanism, the push plate 420 and the punch 430 have insufficient moving space, the punch 430 is easy to interfere with the forming mechanism near the punch 430 when punching up and down, the punch 430 is designed to be bent, the connecting end of the punch 430 and the push plate 420 extends horizontally to the right, the included angle b between the punching end 431 and the horizontal plane is larger than the included angle a between the push plate 420 and the horizontal plane, when the push plate 420 pushes the punch 430 obliquely and downwards, the sliding block 432 of the punch 430 automatically moves horizontally along the sliding groove 421, the transmission of force between the two can realize that the punch 430 reliably punches the wire 700, and the push plate 420 and the punch 430 cannot interfere with the forming cutter near the push plate 420 and the punch 430 during the moving process.

Referring to fig. 3 and 5, a punch positioning block 440 is mounted on the base 200 and opposite to the material guide block 410, and the punch 430 is located between the punch positioning block 440 and the material guide block 410; a second positioning sidewall 441 is disposed on a side of the punch positioning block 440 close to the punch 430, and the punch 430 can move along the first positioning sidewall 412 and the second positioning sidewall 441. The punch positioning block 440 cooperates with the material guide block 410 to position and guide the punch 430.

Referring to fig. 5, a first clearance step 442 for the wire to pass through when the wire is bent is disposed on the back of the die cutter positioning block 440, the depth of the first clearance step 442 is matched with the width of the wire 700, and the first clearance step 442 extends downward to the lower end of the die cutter positioning block 440. When the forming mechanism bends the wire rod downwards, the first clearance step 442 can avoid the wire rod, the free end of the wire rod is allowed to pass through smoothly, and interference in the forming process is avoided. The lower end face of the punch positioning block 440 can be tightly attached to the fifth forming cutter 350, and the fifth forming cutter 350 can be guided to move, so that the punch positioning block 440 has the functions of forming and guiding, the using amount of a forming guide block is reduced, and the structure of the mechanism is more compact.

Referring to fig. 3 and 5, a clearance portion is disposed at a side of the bottom of the punch positioning block 440 close to the punch 430, a telescopic supporting block 460 is mounted at the clearance portion on the base 200, the telescopic supporting block 460 can be driven by the first driving device 470 to retract into the base 200, a wire is supported at the top of the telescopic supporting block 460, and a punching end of the punch 430 can move close to the side wall of the telescopic supporting block 460, so that a root of the wire to be punched can be positioned under the upper and lower limiting actions of the first clearance step 442 and the telescopic supporting block 460, and the root of the wire to be punched is prevented from shaking, thereby providing a reliable auxiliary positioning action for the punch 430 and the wire, and the punching effect is more stable.

The first driving device 470 may be a servo cylinder or a linear module, specifically, referring to fig. 7, a push rod 471 is fixedly connected to an output shaft of the first driving device 470, the push rod 471 penetrates through the base 200 and then is fixedly connected to the telescopic supporting block 460, the base 200 is provided with an accommodating groove 212 for the telescopic supporting block 460 to retract, after the wire is cut by the die cutter 430, the first driving device 470 operates to retract the telescopic supporting block 460 into the accommodating groove 212, so that the wire can smoothly pass through the telescopic supporting block 460 during bending and forming.

Referring to fig. 5, a second clearance step 433 is provided on the back of the die 430 for the wire 700 to pass through, the depth of the second clearance step 433 is also matched with the width of the wire, and the second clearance step 433 extends downward to the lower end of the die 430; the cutting edge of the die cutter 430 is located on the horizontal step surface of the second clearance step 433. The second clearance step 433 may remain in position with the wire until the cutting edge of the die blade 430 severs the wire before the die blade 430 die cuts the wire downward. Therefore, the stamping knife 430 of the present invention can not only die cut the wire, but also limit the wire during feeding and punching.

Referring to fig. 4, a positioning plate 450 is mounted on the surfaces of the material guiding block 410 and the punch positioning block 440 through screws, and the positioning plate 450 covers the punch 430 to limit the punch 430 to move in a vertical plane. The positioning plate 450 further limits the die cutter 430, and prevents the die cutter 430 from shaking forward and backward.

Referring to fig. 6, a telescopic driving device 600 is installed on the back of the base 200, a push rod 610 is installed on an output shaft of the telescopic driving device 600, push rod holes 210 are respectively formed in left and right shoulders of the base 200 on the outer side of the mold insert 500, and after the product is machined, the telescopic driving device 600 pushes out the push rod 610 to push the product off the mold insert.

starting the first driving device 470 to drive the telescopic supporting block 460 to extend out of the accommodating groove 212 of the base;

the rolled wire is flattened by the flattening mechanism and then is sent to the cutting mechanism 400 on the base by the feeding mechanism;

the end of the wire 700 sequentially passes through the guide groove of the guide block 410, the second clearance step of the punch 430, and the first clearance step of the telescopic support block 460 and the punch positioning block 440 horizontally until being fed onto the linear molding wall 510 of the molding insert;

the first forming blade 310 is moved down to form a part of the structure of the product, and the first forming blade 310 is kept still to press the wire 700 against the linear forming wall 510 of the forming insert;

starting the cutting driving device to drive the die cutter 430 to cut off the wire 700 obliquely downwards; then the die cutter 430 is reset;

the first driving device 470 is actuated to retract the telescopic supporting block 460 into the receiving groove 212;

when the first driving device 470 operates, the second forming blade 320 and the third forming blade 330 of the forming mechanism 300 sequentially operate to press the left end of the wire 700 onto the forming insert 500 to form a partial structure of a product;

simultaneously with the movement of the third forming blade 330, the fourth forming blade 340 moves to bend the free end of the wire 700 downward until the free end is pressed against the forming insert 500 and deformed. Then the fifth forming knife 350, the sixth forming knife 360 and the seventh forming knife 370 are sequentially operated to form the final product;

each forming cutter is driven by a corresponding forming driving device to retreat and reset;

the telescopic drive 600 pushes the push rod 610 forward to push the product off the mold insert 500.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a semi-open spring clamp former which characterized in that includes:

the base is provided with a forming insert and a cutting mechanism;

the forming insert is matched with the shape of a product to be formed;

the cutting mechanism comprises a material guide block, a push plate and a stamping knife connected with the push plate, the material guide block is arranged on the base, a guide groove for a wire to horizontally pass through is formed in the back of the material guide block, and a first positioning side wall is arranged on one side, close to the stamping knife, of the material guide block; the push plate can be driven by the cutting driving device to push the stamping knife to move along the first positioning side wall to cut off the wire;

the back of the push plate is provided with a sliding groove, one side of the stamping knife, which is close to the push plate, is provided with a raised sliding block, and the sliding block can move along the sliding groove when the stamping knife punches a wire; the push plate inclines towards the direction of the molding insert, and the sliding groove is parallel to the wire; the punching cutter is bent, the punching end of the punching cutter extends towards the forming side of the wire and forms an included angle with the push plate, the sliding block is positioned at the connecting end of the punching cutter and the push plate, and the sliding block extends towards the direction of the feeding end of the wire;

a stamping knife positioning block opposite to the material guide block is arranged on the base, the stamping knife is positioned between the stamping knife positioning block and the material guide block, and the stamping knife can move along the stamping knife positioning block and the material guide block;

the back of the stamping knife positioning block is provided with a first clearance step for the wire to pass through when being bent, the depth of the first clearance step is matched with the width of the wire, and the first clearance step extends downwards to the lower end of the stamping knife positioning block.

2. The semi-open type spring clamp forming equipment according to claim 1, wherein a space avoiding part is arranged on one side, close to the punch, of the punch positioning block, a telescopic supporting block is mounted at the space avoiding part on the base, the telescopic supporting block supports a wire, and a punching end of the punch can move tightly against the telescopic supporting block; the telescopic supporting block can be driven by the first driving device to retract into the base.

3. The semi-open spring clamp forming equipment according to claim 1, wherein a second clearance step for passing the wire is arranged on the back surface of the stamping knife, the depth of the second clearance step is also matched with the width of the wire, and the second clearance step extends downwards to the lower end of the stamping knife; and the cutting edge of the stamping knife is positioned on the horizontal step surface of the second clearance step.

4. The semi-open spring clamp forming equipment according to claim 1, wherein a positioning plate is mounted on the surface of the material guide block and the punch positioning block, and covers the punch to limit the punch in a vertical plane.

5. The apparatus of claim 2, wherein said molding insert comprises a generally horizontal linear molding wall along which the wire is fed; the forming mechanism comprises a first forming knife perpendicular to the forming wall, and the first forming knife can position the wire on the forming wall.

6. The method of forming a semi-open spring band forming apparatus of claim 5, including the steps of:

each forming cutter is driven by a forming driving device to retreat and reset, and a product is taken away.