JPH0261157A - Apparatus for making a holing device effective and ineffective in embroidering machine, kilting machine or the like - Google Patents

Abstract

PURPOSE: To enable the movement and locking between an operating position and disabled position and to speed up work by coupling the support member of a piercer and the support member fixed to an oscillation bar for driving the piercer via a shaft and forming a projection and recesses on the each other's opposite surfaces. CONSTITUTION: The first support member 10 fixed to the oscillation bar 12 for driving the piercer 13 and the second support member 24 for fixing and supporting the piercer 13 are coupled via the shaft 34 and a belleville spring 38 is inserted between the enlarged head 36 of the shaft 34 and the support member 10, by which an elastic means is constituted. Further, the projection 44 and the recesses 40 and 42 apart a prescribed spacing are formed on the opposite surfaces of the first and second support members 10 and 24 in such a manner that the support member 24 of the piercer 13 may be temporarily locked to a desired position. Both members are thus constituted relatively movably in such a manner that the piercer 13 exists perpendicularly to cloth in the effective operating position and that the piercer 13 orients downward perpendicularly to the operating position in the disabled position.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for activating or disabling a punch in an embroider, quilting machine or similar device provided with a coupling joint for the punch.

The problem of activating and deactivating a borer is widely recognized by those skilled in the art, and the above operation depends on the specimen size and shape and r
This often has to be done when modifying the piercing method with respect to the IA ratio, ie with respect to the distance between two adjacent needles and punches.

The main drawbacks of known types of punching machines are the long time it takes to effectively activate some parts of the punch and deactivate other parts, and the frequent need to activate and deactivate the punch. This results in a significant loss of accuracy from the operation.

A first type of known method, in which the perforator is pushed against a bar driving the perforator during the perforator process, is characterized in that the rear part of the perforator is extended to provide a hollow circular support surface, which is connected to said bar. Insert onto the corresponding bin fixed to one piece. A small positioning spring is engaged within the bearing surface of the punch body, and the tightening to keep it in said position is pulled by means 11.
), thus locking the punch to the drive bar.

In embroidery machines in which this tightening method is used, a plurality of punches may be installed and removed individually, each punch having a pin and a small positioning spring associated therewith. In both cases, the activation and deactivation operations are extremely time consuming, both because of the large number of punches and because each individual punch must be adjusted before the piercing operation is completed. do.

This type of perforator is known as an "automatic perforator" and has the additional drawbacks of a lack of stability in the working position, and because it is fixed, the perforator can be moved to vary the stroke length relative to the fabric. I can't tell.

A further disadvantage arises from the fact that the punches removed from the embroidery machine are first sharpened and then stored in a suitable container where they remain in contact with one another. Furthermore, frequent replacement will change the spring constant of the positioning spring, and thus said spring will over time become absolutely unable to ensure accurate positioning of the punch. Of course, the above-mentioned drawbacks definitely reduce the quality of the stitching that is performed.

In a second type of known method of clamping between a punch and a drive bar member, a threaded rear part of the punch is provided which can be threadedly connected to the bar. In this case, when modification of the stabilization program is required,
In addition to removing or inserting individual perforators, the entire drive bar would be replaced with a new part having the desired perforation ratio.

Additionally, this type of tightening method requires extensive replacement time and still requires adjustment of the drive bar position. Therefore, this method also requires a considerable amount of time, and deterioration in the quality of the stitching is unavoidable.

Thus, a device has been invented, which is the subject of the present invention, for fixing a punch to a drive bar, which overcomes all the drawbacks of the prior art devices.

It is therefore a principal object of the invention to provide a device of the type mentioned above, in which the perforator must be activated and deactivated without the need to remove the perforator or to replace the entire drive bar. do not have.

Another object of the invention is to enable the drilling tool to be quickly moved from an active position to an inactive operating position and vice versa, effectively reducing the time required to prepare a new drilling ratio. The objective is to provide a device that

Another noteworthy object of the invention is to provide a punch having in combination suitable means for tightening the punch in the working position, said means being one in which both positions are accurate. ■ Guarantee that the system is determined and has temporal sustainability.

These and other objects and advantages, as well as features of the device of the invention, will become apparent during the course of the following detailed description of preferred, non-limiting embodiments, with reference to the accompanying drawings.

In the accompanying drawings, a pair of adjacent punches is shown, the ratio of which is 4/4, each equipped with a device according to the invention,
Of course, the number of punches can be varied depending on the size of the embroider. Regardless of the number of boreholes, each is equipped with an enabling and disabling device as described below.

Referring to the drawings, the device has a first section extending perpendicularly and transversely to the bar 12 carrying the punch 13.
The support member 10 includes an extension 14 which abuts the top surface of the bar 12 and is secured thereto using screws 16 or any other suitable means.

Bar 12 is virtually glyph-shaped, with brackets 1-18
and is secured to said end using screws 20 or other suitable means.

Stabbing machines are typically equipped with a plurality of brackets 18, the number of which increases as the number of perforated support bars or banks 12 increases.

Bracket 18 is secured and supported in known manner on a shaft 22 which is slidably received within a guide (not shown) of the embroidery machine.

The device of the invention also includes a substantially glyph-shaped second support member 24 having a perforator 13 secured to its side 26;
On the other hand, the second side 28 of the support member engages one of the sides of the first support member 10, as will be explained later.

Tightening of the second support part @24 of the punch 13 to the side 26 is achieved by inserting the threaded engagement portion of the axial rod 30 of the punch 13 into the corresponding threaded opening of the side 2G and This is done via the final locking means of the lock nut 32.

The connecting shaft 34 connects the first support member 10 and the second support member 2
4 through the side 28. Enlarged head 3 of shaft 34
A plurality of disc springs 38 are inserted between the second support member 24 and the support member 10, and their function is to connect the side 28 of the second support member 24
and the support member 10 is carried out at a predetermined high pressure level.

For said purpose, a pin 39 is attached via the free end of the shaft 34, which pin engages in a recess 41 in the side 28 of the second support member 24 under the deflection of the disk spring 38.

According to one of the basic features of the device according to the invention, the opposing surfaces of the sides 28 of the first support member 10 and the second support member 24 are not flat, and under the action of the disc spring 38 there is a gap between said members. Protrusions and recesses are suitably provided to create a joint type connection.

According to another feature of the device, said joint-type connection provides only two operating positions, as explained below.

A first operating position of the punch 13 is shown in FIG. 1, in which the support bar 12 reciprocates from the position shown in solid lines to the position shown in dashed lines and vice versa, so that the punch 13 moves in the same way. move between two positions indicated by solid lines and dashed lines, respectively,
Holes are made in the fabric, indicated schematically by T.

Referring now to FIG. 2, the punch 13 is shown in the idle position, while the adjacent punch is shown in the activated position.

In the idle position, the punch 13 is located at an angle of virtually 90'' with respect to the working position and points downward.

In each case, the play position is determined with consideration to minimal disturbance to other movable parts and ease of carrying out coupling and uncoupling operations.

The movement from the operating position to the idle position is simply carried out via the coupling device described above, which will be explained in more detail below with reference to FIGS. 4 and 5.

As shown in FIG. 4, the surface of the support member 10 that engages the side 28 of the second support member 24 includes two substantially radial recesses 40 extending from a central bore in which the shaft 34 is received. 42 are provided.

Referring to FIG. 5, again in the exemplary embodiment, the recesses 40 are three located at a distance of 120 degrees from each other, and in addition, one of the recesses 40 is oriented horizontally. The four parts 42 are also located at a distance of 120° from each other,
One of them in particular is oriented vertically and numbered 1.

According to a feature of the device according to the invention, in addition to the horizontally oriented recess 40 and the vertically oriented four parts 42, the remaining four parts also extend 90° from the active position to the inactive position of the drilling pin 13.
A 90° interval is used to obtain movement.

Referring to FIG. 4, the surfaces of the second support members 24, which are arranged to abut the first support members 10 as shown, each have a spacing of 120' in the illustrated embodiment. A plurality of three shaped protrusions 44 are provided.

A sharpener puncher 13 in which a protrusion 44 is received within the four parts 40
is in the activated or movable position, and on the other hand, if the projection 44 is received in the recess 42, the perforator 13 is in the idle or disabled position. This feature is highlighted in detail in Figure 3 on an enlarged scale for the upper and lower perforations in each figure.

It is clear that the movement from one of the above states to the other is carried out by the presence of the Belleville spring 38, which causes the projection 44 to temporarily disengage from the recess 40 or from the recess 42.

It is also clear that the action of the spring 38 is such that it keeps the punch 13 safe in the two positions mentioned above, and more particularly with respect to the working position, which prevents any movement of the punch with respect to the support member 24. It's always accurate because you don't do it.

A further feature of the device according to the invention is that the displacement action to be carried out for activating or deactivating the punch 13 is not at all complex and is in fact very simple, so that the projection 44 engages in the recesses 40 and 42. When you feel that the punch is in the correct position, you can be sure that the punch is in the correct position without having to pay attention to the actual position of the punch.

The above-mentioned ease and quickness of operation not only makes it possible to easily and quickly position all punching tools that require position correction, and therefore, in conclusion, changes to the piercing program can be made and executed in a short time. Can be done.

What is particularly noteworthy from the enlarged views of Figures 5 and 3 is that
The recess 40 has a greater width and depth compared to the recess 42, while the protrusion 44 always has the same cross-section. In this way, the member 10 in the operating position of the punch 13
The distance x1 between the opposing faces of and 28 will be less than the distance x2 between the same faces in the idle or disabled state.

The four portions 42 are provided at a shallower depth to facilitate engagement of the projections 44 thereon and to reduce the force required to move the punch into the operating position. In fact, when the punch is in the idle or disabled position, no force is applied by the operator other than the inertial force created on the punch by movement of the bar member 12.

With further reference to the enlarged scale details of FIG.
The edges 43 of the 0 and 42 inlets 1 are chamfered to avoid extra frictional forces and corresponding wear of the parts. For the same purpose, the protrusion 44 has a corresponding cross section.

The above arrangement, including a set of three protrusions 44 and two sets of four parts 40 and 42 each extending in the radial direction, is preferred but has a limiting meaning. It should be understood that it must not be included. fact,
By mutually fixing members 10 and 28 in three areas,
2 axes especially the X in Figure 5! It is possible to position the punch 13 reliably and repeatedly along the Il+ and Y axes, while the punch is securely fixed by the disc spring 38 along the third axis, in particular the Z axis in FIG. be done. The stability of the fixing action does not depend on the manufacturing precision of the various parts.

In any case, the number of protrusions and recesses provided in the joint arrangement of the device must not be considered limiting, and similarly, the arrangement and mutual arrangement of the protrusions and recesses in the body in the above-mentioned examples as examples. It is clear that the simplicity of the mounting and the tightening are determined by taking force balance into consideration.

In addition, the use of coupling devices may be considered, but this method does not rely on protrusions and four parts as fixing members, but instead relies on friction couplings, clutch couplings, or similar devices that serve the same purpose. Ru.

In yet another embodiment, a coupling means may be provided that includes a plurality of interlocking trapezoidal shapes of suitable configuration spaced apart along the outer surfaces 45 and 46 of members 10 and 24.

As the case may be, modifications and/or modifications may be made to the device for disabling or disabling a piercing machine or similar punching machine according to the invention without going beyond the scope of the invention. It should be understood that modifications may be made to the alternation.

[Brief explanation of the drawing]

Figure 1 is a side view of the punch in the working position; Figure 2 is a side view showing the punch of Figure 1 in the disabled position, with the adjacent punch still in the active position; Figure 3; is the second
The top view of the two punches shown in the figure, Figure 4 is the IV of Figure 3.
- An explanatory diagram of the device using the IV line, and Fig. 5 is the V- of Fig. 4.
FIG. 2 is an explanatory diagram of the device using V-rays.

Claims (8)

[Claims] (1) comprising first and second support members, the second member supporting a perforator secured thereto, the members being coupled together using a bonded coupling arrangement; Elastic means are provided to move the perforator from an operating position substantially perpendicular to the fabric to be pierced to a second position substantially parallel to said fabric and vice versa. 1. A device for activating and deactivating a punch in an embroider, quilting machine or similar device, characterized in that it is capable of: (2) a first support member is fixed to a rocking bar driving the drilling tool into motion, while a second support member is connected to the first support member by means of an axle, and the elastic means 2. A device according to claim 1, characterized in that a is located between the enlarged head of the shaft and at least one of the support members. 3. Device according to claim 2, characterized in that a pin is attached to the shaft, which engages in one seat of the support member under the action of the elastic means. (4) protrusions are provided on the opposing surfaces of the support member and further machined with recesses configured to engage in a mating manner to temporarily lock the support member of the punch in a desired position; 3. The device according to claim 2, characterized in that: (5) In the operating position of the punch, the protrusion engages within the recess, the recess having a depth and width greater than the depth and width of the other recess. The device described. 6. Device according to claim 5, characterized in that the recess extends substantially radially around the opening into which the shaft is inserted. 7. The device of claim 4, wherein the protrusion has a contoured cross-sectional shape. (8) The device according to claim 4, wherein the edge of the entrance of the recess is chamfered.