CN2254786Y

CN2254786Y - Spring making machine with improved mechanism for adjusting the distance between rings

Info

Publication number: CN2254786Y
Application number: CN 96213519
Authority: CN
Inventors: 张树煜
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-06-12
Filing date: 1996-06-12
Publication date: 1997-05-28
Anticipated expiration: 2006-06-12

Abstract

The utility model relates to a spring making machine with an improved mechanism for adjusting the distance between springs. A positive motion cam is utilized to drive an active rocker, so a first mechanism for adjusting the distance between springs and a second mechanism for adjusting the distance between springs can be driven. The utility model is characterized in that the positive motion cam is a discoid shape, a groove track is arranged on the positive motion cam, a rolling wheel is arranged at one end of the active rocker, and the rolling wheel is sheathed in the groove track; thereby, the positive motion cam can stably drive a driving lever to do reciprocating swing motion; thus, the jitter and the inertia of the active rocker can be reduced when the active rocker is in transmission action, the noise can be reduced, and the stability of the distance cutting or the cutting feed of a push rod, which is influenced by the jitter of the transmission can be avoided; thereby, the uniform distance can be formed between the made springs, and the product quality can be ensured.

Description

Improve the spring production machine of spring pitch guiding mechanism

The utility model relates to a kind of spring production machine, especially refer to a kind of by positive motion cam transmission drive crank, and when reducing transmission beat and inertia reducing noise, and more stable when making pitch cutter or push rod feed, and make made spring that spring production machine than the pitch of homogeneous be arranged.

Generally be used to make the spring production machine of extension spring or compression spring, consult accompanying drawing 1 (Fig. 1 is the front view of existing spring production machine), mainly be by wire rod feed mechanism a, two spring diameter guiding mechanism b1 and b2, the first spring pitch guiding mechanism c, the second spring pitch guiding mechanism d, cutting mechanism e etc. form, this is first years old, the second spring pitch guiding mechanism c, d drives by same driving mechanism f, consult shown in the accompanying drawing 2, (Fig. 2 is existing first, the constitutional diagram of the second spring pitch guiding mechanism), this driving mechanism f drives drive crank f2 by a modular panel cam f1, and this drive crank f2 interlock one driven rocking bar f3 again, has a protuberance f31 on this driven rocking bar f3, other has a seated f4 and driven rocking bar f3 to fuse, and on seated f4, has a projection f41, go up each in the protuberance f31 of this driven rocking bar f3 with the projection f41 of seated f4 and be connected a connecting rod f5 respectively, f6, this connecting rod f5, f6 connects the first head motion f7 and the second head motion f8 more respectively, and has slip tool rest f71 on the first head motion f7, on the slip tool rest, be equiped with pitch cutter f72, has push rod f81 on this second head motion f8 again, can be by first, the second head motion f7, f8 envoy moves back and forth apart from cutter f72 and push rod f81, shown in Fig. 3 (Fig. 3 is the stereogram of the existing first spring pitch guiding mechanism) and Fig. 4 (Fig. 4 is the stereogram of existing second spring joint guiding mechanism).

By the above as can be known, the wire rod a1 that will make spring by wire rod feed mechanism a sends into two spring diameter guiding mechanism b1, b2, wire rod a1 is wound into a spiral helicine spring a2, cut in the pitch of spiral spring a2 by the pitch cutter f71 on the first or second pitch guiding mechanism c, the d afterwards, and can equidistantly adjust the pitch of spring a2 by pitch cutter f71, by cutting mechanism e spring a2 is blocked then and promptly form spring a2; And this first, second pitch guiding mechanism c, d are to change the pitch size of spring a2 by the extension elongation size of pitch cutter f72 on it or push rod f81; Wherein this first segment is the pitch size of adjusting spring a2 with the size on the cutter end inclined plane of pitch cutter f72 apart from guiding mechanism c, it is applicable to makes undersized spring a2, and the second pitch guiding mechanism d be with the lateral margin pushing top spring a2 of push rod f81 to change the size of pitch, be applicable to the spring of making large-size.

Yet prior art is in order to the combined type cam f1 on feed opportunity of control pitch cutter f72 or push rod f81, be that plane cam f11 device with the curvilinear path of sheet is on a runner f12, the driven pulley f22 of drive crank f2 then leans against on the profile track of combined type cam f1, and profile orbiting motion along combined type cam f1, therefore, this driven pulley f22 is easy to generate and beats and have noise to produce when combined type cam f1 rotates, especially combined type cam f1 is when running speed is very fast, the situation that driven pulley f22 beats is serious especially, noise also can strengthen thereupon, even, when turning round, higher rotation speed beats because driven pulley f22 produces inertia, make the feed of pitch cutter f72 or push rod f81 apart from instability, and then make the pitch heterogeneity of made spring a2, and influence the quality of product.

The utility model creator thoughts in the prior art with the plane cam f11 device of the curvilinear path of sheet on runner f12 and become combined type cam f1, and drive drive crank f2 by combined type cam f1, the driven pulley f22 of device on drive crank f2, generation is beated and is had noise to produce when transmission easily, and, driven pulley f22 beats because producing inertia, make the feed of pitch cutter f72 or push rod f81 apart from instability, and then make the pitch heterogeneity of made spring a2, and influence the quality of product; This creator thereby leadoff design, design a kind of driving mechanism that is used to drive first and second spring pitch guiding mechanism eventually, driving mechanism wherein is to drive drive crank by a positive motion cam, and this positive motion cam is for one discoid, has an impression orbit thereon, an end of this drive crank is equiped with a roller again, this roller housing is contained in the impression orbit, make positive motion cam can stably drive the drive crank reciprocally swinging, and because drive drive crank with positive motion cam, and beating and reduce noise can reduce the drive crank transmission time, thereby the stability when jumping effect pitch cutter can avoid because of transmission time the or push rod feed, and make made spring that pitch than homogeneous be arranged, to guarantee the quality of product.

Main purpose of the present utility model is to provide a kind of spring production machine that improves its spring pitch guiding mechanism, it is to drive first and second spring pitch guiding mechanism by positive motion cam transmission drive crank, stability when inertia jumping effect pitch cutter when avoiding or push rod feed because of transmission, make made spring that pitch than homogeneous be arranged, to guarantee product quality and can beat and reduce the spring production machine of noise because of reducing the inertia of drive crank when the transmission.

The utility model can be because of driving drive crank with positive motion cam, and beating and reduce noise can reduce the drive crank transmission time, thereby the stability when jumping effect pitch cutter can avoid because of transmission time the or push rod feed, and make made spring that pitch than homogeneous be arranged, to guarantee the quality of product.

Below in conjunction with accompanying drawing, the utility model is described in further details:

Fig. 1 is the front view of existing spring production machine;

Fig. 2 is the constitutional diagram of existing first, second spring pitch guiding mechanism;

Fig. 3 is the stereogram of the existing first spring pitch guiding mechanism;

Fig. 4 is the stereogram of the existing second spring pitch guiding mechanism;

Fig. 5 is a stereogram of the present utility model;

Fig. 6 is a constitutional diagram of the present utility model;

Fig. 7 is another embodiment of the present utility model;

At first see also Fig. 1, the utility model mainly is by wire rod feed mechanism a, two spring diameter guiding mechanism b1, b2, the first spring pitch guiding mechanism c, the second spring pitch guiding mechanism d, cutting mechanism e etc. form, wherein this first, the second spring pitch guiding mechanism c, d drives by same driving mechanism 10, as Fig. 5 and shown in Figure 6, this driving mechanism f drives drive crank 2 by a positive motion cam 1, and this drive crank 2 interlock one driven rocking bar 3 again, has a protuberance 31 on this driven rocking bar, other has a seated 4 to fuse with driven rocking bar 3, and on seated, has a projection 41, each is connected a connecting rod 5 respectively on the projection 41 of the protuberance 31 of this driven rocking bar 3 and seated 4,6, this connecting

rod

5,6 connect first head motion 7 and second head motion 8 more respectively, and has slip tool rest 71 on first head motion 7, on the slip tool rest, be equiped with pitch cutter 72, have push rod 81 on this second head motion 8 again, must be by first,

second head motion

7,8 envoys move back and forth apart from cutter 72 and push rod 81; Feature of the present utility model is to be that this positive motion cam 1 is for one discoid, has an impression orbit 11 thereon, an end of this drive crank 2 is equiped with a roller 21 again, and this roller 21 is sleeved in the impression orbit 11, makes positive motion cam 1 can drive drive crank 2 reciprocally swingings.

Because the roller 21 of drive crank 2 is to be enclosed within the impression orbit 11 of positive motion cam 1, make drive crank 2 according to 11 motions of the impression orbit on the positive motion cam 1, thereby can reduce drive crank 2 beating when transmission, produce to reduce noise, and because drive crank 2 is comparatively stable when transmission, noninertia is beated, make the pitch cutter 72 on the slip tool rest 71 of the head motion 7 of winning, or second the push rod 81 on the head motion 8, can stablize and move back and forth, make made spring that the pitch of homogeneous be arranged, thereby preferable product quality must be arranged.

Other sees also Fig. 7, wherein the impression orbit 11 of this positive motion cam 1 can be designed to a convex track 12, and an end of this drive crank 2 is pivoted with two rollers 22, this two roller 22 leans against the both sides of convex track 12 respectively, can make drive crank 2 according to convex track 12 swings of seeking positive motion cam 1 equally, and can stablize transmission and beat to reduce inertia.

Claims

1, a kind of spring production machine, mainly be by the wire rod feed mechanism, two spring diameter guiding mechanisms, the first spring pitch guiding mechanism, the second spring pitch guiding mechanism, cutting mechanism is formed, wherein first, the second spring pitch guiding mechanism is to drive by same driving mechanism, this driving mechanism is to drive drive crank by a positive motion cam, and this drive crank interlock one driven rocking bar again, has a protuberance on this driven rocking bar, other has a seated and driven rocking bar to fuse, and on seated, has a projection, each is connected a connecting rod respectively on the projection of the protuberance of this driven rocking bar and seated, this connecting rod connects first head motion and second head motion more respectively, and has the slip tool rest on first head motion, on the slip tool rest, be equiped with the pitch cutter, has push rod on this second head motion again, must be by first, the second head motion envoy moves back and forth apart from cutter and push rod, it is characterized in that:

This positive motion cam is one discoid, has an impression orbit thereon, and an end of this drive crank is equiped with a roller again, and this roller housing is contained in the impression orbit, makes positive motion cam can drive the drive crank reciprocally swinging.

2, spring production machine according to claim 1 it is characterized in that the impression orbit of this positive motion cam is designed to a convex track, and an end of this drive crank is pivoted with two rollers, and this two roller leans against the both sides of convex track respectively.