CN201244646Y - Torsional cutting device of spring forming machine - Google Patents

Abstract

The utility model relates to a torsional cutting device, comprising a cam shaft, a sliding seat, a cutting knife and a driven rod, wherein, an eccentric block is arranged at one side of the cam shaft, and a gliding block is arranged on one surface of the eccentric block and is arranged in a spacing groove arranged at the top end of the cutting knife which is arranged in a sliding groove of the sliding seat; and the back side of the sliding groove is connected with the driven rod which is connected with the surface of a camshaft in a leaning way. When the camshaft runs, the eccentric block rotates to drive the cutting knife to lift reciprocally, and the driven rod can make the slider swing reciprocally after swinging, so that the cutting knife can have a moving track formed by connecting a plurality of sections of curves so as to shorten the interval of feeding.

Description

Coiling machine turn round cutting apparatus

Technical field

The utility model relates to a kind of coiling machine.

Background technology

General common coiling machine, be to send into wire rod, bend line, with the spring body portion of bending wire around the formation spring through the curve gauge of coiling machine opposite side setting by the pay-off of a side, and relying on the shearing device of a reciprocal lifting, the spring that making is finished cuts off according to suitable length.

See also shown in Figure 1, action schematic diagram for existing shearing device, its shearing device 1 is that group is located at the top of bending wire module 2 relatively, mainly be to comprise a cutting knife 11, a pedestal 12, an eccentric wheel 13 and a power source 14, wherein, cutting knife 11 is that movable group is located in the limit sliding chutes 121 of pedestal 12, and cutting knife 11 1 ends and be connected with eccentric wheel 13, and eccentric wheel 13 is used as power with power source 14 and is connected; When power source 14 activates eccentric wheel 13 rotations, can drive cutting knife 11 back and forth lifting in the limit sliding chutes 121 of pedestal 12, and pay-off 3 is to be mutually vertical with curved wire module 2, therefore, the line material is vertically outwards sent, and rely on the mode of cutting knife 11 with similar chopper, cut off the binding between line material and spring from top to bottom.

Yet, its cutting knife 11 descends when cutting off, because the transport path of line material is by 11 blocks of cutting knife, therefore, pay-off 3 must temporarily stop, in order to avoid wire rod is sent the damage that causes shearing device 1 or pay-off 3 continuously, in the past because cutting knife 11 mobile routes are long, cause feeding long blanking time, and have influence on the efficient of production; And the mode that the straight line lifting is sheared increases the shear stress of wire rod shear surface easily, and therefore, required strength also increased when cutting knife 11 was sheared wire rods, and cutting knife 11 weares and teares naturally easily, so be necessary to be improved.

Summary of the invention

Main purpose of the present utility model aims to provide a kind of cutting apparatus of turning round of the coiling machine that cuts off wire rod and spring, to solve the existing not good problem of production efficiency, significantly promotes production efficiency.

For achieving the above object, the technical solution adopted in the utility model comprises:

A kind of coiling machine turn round cutting apparatus, it is characterized in that: include a camshaft, a slide, a cutting knife and a follower lever, wherein, be to be provided with a power source at a frame back side, described power source is used as power with described camshaft and is connected, described camshaft is connected with described cutting knife is eccentric, and described cutting knife Slide Group is located in the described slide, and described slide relies on described follower lever to abut against described camshaft flank.

For achieving the above object, the technical solution adopted in the utility model also comprises:

A kind of coiling machine turn round cutting apparatus, it is characterized in that, comprising:

One frame is provided with a plurality of axis holes;

One group of camshaft that is located at the frame inner face, the one end passes the axis hole of described frame, and the other end and be used as power with a power source is connected, and the end that described camshaft passes described frame is provided with an eccentric block, and described eccentric block one side also is provided with a slide block;

A slide that is located at described frame front, its front are to be provided with a chute, and the back side is to be provided with an axostylus axostyle, and described axostylus axostyle is located in the described axis hole;

One slides is located at the cutting knife of described slide, and the one end is to be provided with a limit sliding chutes, and described slide block slides and be located in the described limit sliding chutes, and the described cutting knife other end is a blade part;

One is hubbed on the follower lever of described axostylus axostyle, and the one end is to be provided with a driven pulley, and driven pulley also abuts against described camshaft flank.

Compared with prior art, adopt the advantage that the utlity model has of technique scheme to be: when camshaft is driven running by power source, its eccentric block can and then rotate, the slide block of its eccentric block one side also can horizontally slip in the stopper slot on cutting knife top, and drive the reciprocal lifting of cutting knife simultaneously, the same time, its follower lever also can be along with camshaft rotates and reciprocally swinging, and drive slide reciprocally swinging, make cutting knife present the motion track that is formed by connecting by the multistage curve, and each section curve joint is to form a break; When cutting knife cuts off wire rod, can be oblique mobile to curved wire module opposite side, and and form the oblique cut-out mode of cutting of turning round between wire rod, therefore, can reduce the shear stress between cutting knife and wire rod, and effectively prolong the cutting knife life-span, and shear surface also is not easy to produce burr; Again.Its cutting knife through decline → obliquely move → move → draw high again obliquely down and reset, cutting knife can be sheared to descending under also oblique when mobile, and make cutting knife stop that the time of pay-off shortens, therefore, the interval also can shorten relatively between its feeding, and significantly promotes production efficiency.

Description of drawings

Fig. 1 is the action schematic diagram of existing shearing device;

Fig. 2 is the scheme of installation of the utility model preferred embodiment;

Fig. 3 is the front view of the utility model preferred embodiment;

Fig. 4 is the dorsal view of the utility model preferred embodiment;

Action diagram () when Fig. 5 is the utility model preferred embodiment running;

Action diagram (two) when Fig. 6 is the utility model preferred embodiment running;

Action diagram (three) when Fig. 7 is the utility model preferred embodiment running;

Action diagram (four) when Fig. 8 is the utility model preferred embodiment running;

Action diagram (five) when Fig. 9 is the utility model preferred embodiment running.

Description of reference numerals: 1-shearing device; The 11-cutting knife; The 12-pedestal; The 121-limit sliding chutes; The 13-eccentric wheel; The 14-power source; 2-bends wire module; The 3-pay-off; 4-turns round cutting apparatus; The 41-camshaft; The 411-eccentric block; The 412-slide block; The 42-slide; The 421-chute; The 422-axostylus axostyle; The 43-cutting knife; The 431-stopper slot; The 44-follower lever; The 441-driven pulley; 442-adjusts screw; The 5-coiling machine; The 51-frame; The 511-axis hole; The 512-power source; The 52-pay-off; 53-bends wire module.

The specific embodiment

Understand content of the present utility model for your juror can be known, it is graphic only to arrange in pairs or groups in the following instructions, please consult.

See also Fig. 2, Fig. 3, shown in Figure 4, scheme of installation, front view and dorsal view for the utility model preferred embodiment, it turns round cutting apparatus 4 is that group is located on the frame 51 of coiling machine 5 one sides, described frame 51 also is provided with a plurality of axis holes 511 and a power source 512, and power source 512 is general common motor, stepper motor or servo motors, and be respectively equipped with a pay-off 52 and a curved wire module 53 in the both sides of turning round cutting apparatus 4, it mainly comprises:

One group of camshaft 41 that is located at frame 51 inner faces, the one end is the axis hole 511 that passes frame 51, the other end and be used as power with power source 512 is connected, the end that its camshaft 41 passes frame 51 is to be provided with an eccentric block 411, and on eccentric block 411 one side outwardly, be provided with a slide block 412, when camshaft 41 rotates continuously, can drive slide block 412 eccentric rotary on the eccentric block 411.

A slide 42 that is located at frame 51 fronts, its front are to be provided with a chute 421, and the back side is provided with an axostylus axostyle 422, and axostylus axostyle 422 is that movable axis is located in the axis hole 511, and slide 42 can axostylus axostyle 422 be rotated with respect to frame 51 for fulcrum.

Cutting knife 43 in the chute 421 that slides is located at slide 42, the one end is to be provided with a limit sliding chutes 431, and the slide block 412 of an end is to slide to be located in the limit sliding chutes 431 on the camshaft 41, so that during slide block 412 eccentric rotary, can drive cutting knife 43 reciprocal lifting the chute 421 of slide 42 in.

One is hubbed on the follower lever 44 of the axostylus axostyle 422 of slide 42, the one end is to be pivoted with a driven pulley 441, and and 44 of follower levers be provided with one and adjust screw 442, adjusting the side that driven pulley 441 abuts against camshaft 41, follower lever 44 other ends also are connected with the axostylus axostyle 422 of slide 42; When camshaft 41 rotates, the action that makes follower lever 44 can produce reciprocally swinging, and drive the action that slide 42 produces reciprocally swinging.

In view of the above, when it is turned round cut and does, be to drive camshaft 41 by power source 512 to rotate, because camshaft 41 can drive the eccentric rotary of slide block 412 simultaneously, and the reciprocally swinging of slide 42, through suitable camshaft 41 timing Design, and with its cutting knife 43 reciprocal lifting and slide 42 reciprocally swingings, make cutting knife 43 present the motion track that is formed by connecting by the multistage curve, and each section curve joint is to form a break, its movement locus be straight line descend → oblique outer decline → oblique in also involution of risings → rising, and form a fixing roundtrips, outside cutting knife 43 is oblique, during swing, the feeding port of pay-off 52 is exposed, and pay-off 52 just continue feeding, shorten the time that cutting knife 43 stops pay-off 52, therefore, the interval also can shorten relatively between its feeding, and has significantly promoted the production efficiency of coiling machine 5.

See also Fig. 5～shown in Figure 9, action series when turning round for the utility model preferred embodiment, and please consult the 3rd, 4 figure simultaneously, when power source 512 drives camshaft 41 rotations, can drive slide block 412 eccentric rotary by eccentric block 411, and drive slide 42 reciprocally swingings by follower lever 44, after its combination, can produce and make cutting knife 43 reciprocal lifting and the synchronous actions of reciprocally swinging; Its action step is as follows:

First action, straight line descends, when camshaft 41 rotated, the slide block 412 of its eccentric block 411 1 sides is driven to move down, at this moment, not swing of follower lever 44, thus slide 42 do not swing yet, and cutting knife 43 to be straight lines move down.

Second action, oblique outer decline, when follower lever 44 is driven outwards swing by camshaft 41, make slide 42 and then outwards swing, because slide block 412 can horizontally slip in the stopper slot 431 on cutting knife 43 tops, its slide block 412 can move down simultaneously, moves down and drive cutting knife 43, produce first break position of motion track, make cutting knife 43 form an oblique side descend the outer side oscillation of pay-off 52 (just to) with respect to curved wire module 53.

The 3rd action, rise in oblique, along with camshaft 41 rotates, its cutting knife 43 can swing to outermost position, and follower lever 44 stops swinging, and its slide 42 also stops swinging relatively and presents the angle of inclination, forms second break position of motion track, 43 of its cutting knifes rise because of being subjected to slide block 412, and make cutting knife 43 form the state that rises in oblique.

The 4th step, involution, last, its camshaft 41 can rotate and get back to initial point, and makes its slide 42 be subjected to the drive of follower lever 44, and inwardly swings back former angle, and drives cutting knife 43 risings simultaneously, forms the state of involution.In view of the above, cutting knife 43 of the present utility model is to present the motion track that is formed by connecting by the multistage curve, and each section curve joint is to form a break, after cutting knife 43 cuts off wire rods, and charging again fast, and significantly promote production efficiency.

As mentioned above, see also Fig. 3～Fig. 8, coiling machine of the present utility model turn round cutting apparatus, when mainly relying on same power source 5122 runnings, activate cutting knife 43 and slide 42 synchronously, make reciprocal lifting and reciprocally swinging respectively, cause the curve motion track of cutting knife 43 to have a plurality of breaks, after cutting off wire rod at cutting knife 43, swing laterally fast and reset, and shorten the time that cutting knife 43 stops pay-off 52, and then shorten the interval between the feeding, significantly promote production efficiency.

More than explanation is just illustrative for the utility model; and it is nonrestrictive; those of ordinary skills understand; under the situation of the spirit and scope that do not break away from claim and limited; can make many modifications, variation or equivalence; for example general motor is changed into servo motor or stepper motor etc., all will fall within the protection domain of the present utility model.

Claims (8)

1. a coiling machine turns round cutting apparatus, it is characterized in that: include a camshaft, a slide, a cutting knife and a follower lever, wherein, be to be provided with a power source at a frame back side, described power source is used as power with described camshaft and is connected, described camshaft is connected with described cutting knife is eccentric, and described cutting knife Slide Group is located in the described slide, and described slide relies on described follower lever to abut against described camshaft flank.

Coiling machine according to claim 1 turn round cutting apparatus, it is characterized in that: described frame is provided with a plurality of axis holes.

Coiling machine according to claim 1 turn round cutting apparatus, it is characterized in that: described camshaft one end is provided with an eccentric block, and described eccentric block simultaneously is provided with a slide block.

4. coiling machine according to claim 1 turns round cutting apparatus, it is characterized in that: described slide front is provided with a chute, and the back side is provided with an axostylus axostyle, is pivoted with a follower lever on the described axostylus axostyle, follower lever one end is provided with a driven pulley, and driven pulley also abuts against described camshaft flank.

Coiling machine according to claim 4 turn round cutting apparatus, it is characterized in that: be provided with one between described driven pulley and follower lever and adjust screw.

Coiling machine according to claim 1 turn round cutting apparatus, it is characterized in that: described cutting knife one end is provided with a limit sliding chutes, the other end then is a blade part.

A coiling machine turn round cutting apparatus, it is characterized in that, comprising:

One frame is provided with a plurality of axis holes;

One group of camshaft that is located at the frame inner face, the one end passes the axis hole of described frame, and the other end and be used as power with a power source is connected, and the end that described camshaft passes described frame is provided with an eccentric block, and described eccentric block one side also is provided with a slide block;

A slide that is located at described frame front, its front are to be provided with a chute, and the back side is to be provided with an axostylus axostyle, and described axostylus axostyle is located in the described axis hole;

One slides is located at the cutting knife of described slide, and the one end is to be provided with a limit sliding chutes, and described slide block slides and be located in the described limit sliding chutes, and the described cutting knife other end is a blade part;

One is hubbed on the follower lever of described axostylus axostyle, and the one end is to be provided with a driven pulley, and driven pulley also abuts against described camshaft flank.

Coiling machine according to claim 7 turn round cutting apparatus, it is characterized in that: described follower lever one end is pivoted with a driven pulley, and is provided with one between described driven pulley and follower lever and adjusts screw.

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