JPS5953139B2 - Hiradice Neji Tenzouki - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides continuous feeding between a fixed die and a movable die in order to form a thread in the shaft of a material of a screw fastener. This invention relates to a type of thread rolling machine that makes reciprocating motion.

Rolling machines of this type are capable of forming threads in many different types and sizes of materials and are frequently replaced to accommodate such different materials.

Such replacement requires not only die replacement, but also several mechanical adjustments to properly align the die forming elements longitudinally and establish the proper lateral spacing, pressure angle, and taper angle between the dies. Is required.

It is a general object of the present invention to provide a new and improved screw rotor of the above characteristics which allows various machine adjustments to be made more quickly, precisely, and with less trial and error than was possible with prior machines. We may provide manufacturing machinery.

A related object of the present invention is to take into account the operating characteristics of the machine when making final adjustments to the machine, thereby facilitating assembly and adjustment even if the person making the fine adjustments while operating the machine at high speed is relatively unskilled. We provide a rolling machine that can perform this process.

A more specific object of the invention is to provide a fixed die in which all die adjustments are made and the fixed die is held on a series of stacked members, the stacked members being mutually adjustable and capable of adjusting the fixed die to various positions. The object is to achieve the above object by providing a machine that can be easily moved to do the following.

The invention also resides in the unique mounting and arrangement of die retaining members and novel methods of adjusting these members.

The above and other objects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

As shown in the drawings, the present invention is embodied in a flat die thread rolling machine 10 that forms a thread in the shaft of a substantially cylindrical blank 11 that will eventually become a screw fastener.

This material is cut into one fixed die 13 and one movable die 14 at a time.
The material is fed between and reciprocated through either a movable die or a fixed die to form a thread as the material is rolled between these surfaces along opposing surfaces of the die.

In further detail of the invention, the rolling machine 10 includes a box-shaped support or frame 15 on which is mounted a flat base plate 16, which faces downwardly at an angle of about 30 degrees. Leaning forward.

The fixed die 13 is mounted at a fixed position on the substrate, and the movable die 14 is supported by a guide shoe 17 so as to reciprocate back and forth relative to the fixed die.

This guide shoe houses a sliding die holder 19 which is attached to the substrate and clamps the movable die therein.

In order to reciprocate the movable die, one end of the connecting rod 20 (FIGS. 2 and 3) is pivotally supported by a die holder, and the other end is pivotally supported by an eccentric ring 21 that projects from a flight wheel 23 in the axial direction. .

The flywheel 23 is keyed to one end of a shaft 24 which is rotationally driven by a belt 25 (FIG. 1) extending between the other end and a drive shaft of a rotary power source (not shown).

When the movable die 14 is at one end of its stroke, its leading edge is near the leading edge of the stationary die 13 and the web material 11 is in a position to be fed between these dies (FIG. 2). ).

Thereafter, the movable die is displaced to the right and the material is rolled between the dies to form a thread.

When the movable die reaches the other end of its stroke, the threaded screw fasteners fall from the die and enter the collection hopper.

This rolling machine 10 operates at high speed and can thread more than 1000 pieces of material per minute.

To feed the blank 11 to the dies 13, 14, a pair of parallel rails, the width of which is adjustable to match the diameter of the blank shank, form a grooved track 26 (FIG. 2), which is connected to the die. to a vibrating bowl (not shown).

Material fed from this bowl falls by gravity down the track to near the die and is stopped by a spring loaded gate 27 extending across the track.

Each time the movable die 14 is retracted, the feed fingers 28 engage the most advanced material and force it past the escape game 27 and into the gap between the dies.

The feed finger 28 is held at one end of a slider 29, which is mounted in a guide passage 30 on the base plate 16 for reciprocating movement.

The roller 31 is supported at the other end of the slider and engages an inclined cam surface 33 formed on the block 34.

The block 34 is supported by the guide passage 30 and reciprocates at right angles to the slider.

The reciprocating movement of the block is effected by a link 35 connected to a pivoting bell crank 36 which is connected by a link 37 to an eccentric 39 provided at the end of the shaft 24 opposite the flywheel 23. There is.

As block 34 advances to the position shown in phantom in FIG. 2, cam surface 33 retracts slider 29 and feed finger 28 in preparation for engagement of the next blank 11 by the finger.

When the block 34 is inserted into the force bow 1, the feed finger is fitted into the hole 41 at the rear end of the slider and advances the forward feed stroke by the coil spring 40 compressed between the seat of the hole and the rear end of the guide passage 30. .

As shown in FIG.
It is arranged at an angle of about 45° to the

This particular angular positioning of the feed fingers makes it easier for the material to dislodge from the track 26 and move around the front corner of the stationary die 13.

As a result, each blank 11 removed from the track 26 is forced through the spring-loaded gate 27 and against the movable die 14 by the pressure exerted by the feed finger 28, which pressure is further applied between the dies. Helps start the rotation of the material.

The dies 13, 14 have a substantially block shape, and on opposite sides thereof are formed vertically extending ridge-forming elements 43 (FIGS. 3 and 6) in the form of alternating peaks and valleys. , this element extends along a plane corresponding to the helical angle of the thread to be formed.

To properly form a thread, the thread-forming elements of one die are properly aligned with the thread-forming elements of the other so that the increments formed by each die form one continuous thread instead of two separate threads. They should be mutually positioned longitudinally (i.e. in the reciprocating direction) so as to form 11.

Also, appropriate pressure orientation (FIG. 2) must be established between the dies depending on the diameter and depth of the particular material.

That is, the surface of the fixed die 13 must converge at a precise pressing angle toward the surface of the movable die 14 as the material progresses along the die to progressively deepen the die or thread.

These two dies are laterally spaced from each other according to the diameter of the material, and the surface of the fixed die 13 is also spaced properly relative to the surface of the movable die if the material is to be tapered downward. It must be inclined upwardly and backwards at an angle of inclination b (Fig. 4).

Therefore, the dies 13, 14 must be properly set relative to each other depending on the thread to be formed.

By using different dies, rolling machine 10 can be used to form variable threads in different types and sizes of material.

As the rolling machine moves from one side to the other, the relative position of the dies sets the proper vertical alignment and lateral clearance of the slip-forming elements 43, and the die surface is adjusted to the proper pressing angle a and tilting angle. must be adjusted accordingly.

In accordance with the present invention, all adjustments to the fixed die 13 are made using a unique arrangement of members 44, 45 that are movable relative to each other and easily adjustable to set the proper positioning of the fixed die. By attaching fixed dies to the stacks of .46 and 47, the setting and adjustment of the rolling machine 10 can be made extremely simple.

According to this rolling machine, even relatively inexperienced workers can quickly perform appropriate assembly and adjustment without going through the usual long and tedious trial-and-error work.

Furthermore, the longitudinal alignment of the die and the pressing angle a can be precisely adjusted after the rolling machine is running at high speed, so that the operator can compensate for any variations introduced by the dynamic characteristics of the machine. can.

More specifically, the lower member 44 of the stack comprises a flat mounting plate that is adjustable back and forth along a straight path extending parallel to the reciprocating path of the movable die 14; Varying the vertical alignment of dies 13,14.

Mounting plate 44 is supported directly on top of substrate 16 and is releasably secured to the substrate by two screws 49 (FIG. 6) threaded through elongated slots 50 in the mounting plate and into holes 51 in the substrate.

An elongated rectangular pocket 53 (FIG. 4) is formed on the lower side of the mounting plate 44 into which the upper portion of a key 54 having a similar shape is inserted.

The key is secured to the mounting plate 16 by screws 55, and its lower portion extends through an elongated slot 56 formed in the base plate 16.
(See Figures 5 and 6)
.

The adjustment of the mounting plate 44 is done by screwing into the board 16 and using the key 5 at the inner end.
This is done by turning a tubular screw 57 (FIG. 5) adapted to engage the end of 4.

A second screw 59 passes through the screw 57 and is screwed into the hole 60 of the key 54.

Once screw 59 is loosened, mounting plate 44 can be adjusted back and forth simply by turning screw 57.

This adjustment changes the longitudinal position of the fixed die 13 relative to the movable die 14, thus properly aligning the thread forming elements 43.

Thus, mounting plate 44 with screws 57 allows an operator to quickly and easily assemble rolling machine 10 and align the dies.

An advantage is that initial assembly adjustments can be made precisely and gradually while the machine is running at high speed.

As a result, the operator can make precise adjustments even when the adjustments must take into account the inertia of the movable die or other dynamic factors.

The second member 45 of the stack consists of a rocker plate (FIG. 6) which can be adjusted to vary the pressing angle a of the dies 13, 14.

The swing plate is mounted so as to swing around an axis extending perpendicularly to the reciprocating path of the movable die 14, and is adjusted around this swing axis so as to change the pressing angle.

For this purpose, an upright pivot element or pin 61
The pin passes through a hole 63 in the rocking plate 45 and is press-fitted into a hole 64 in the mounting plate 44, and the upper end of the pin is just below the top surface of the rocking plate.

Importantly, the axis of the pivot pin coincides very closely with the effective leading edge of the neck-forming element 43 of the stationary die 13, which in this case is located at the front leading corner of the die. It is very limited.

As a result, adjustment of the rocking plate 45 around the pivot pin 61 is effective in changing the pressurizing angle a, but it is difficult to adjust the angle between the front end corner of the fixed die and the opposing surface of the movable die 14. the mounting plate 4 without substantially changing the lateral clearance between the mounting plates 4;
4 is adjusted linearly, the rocking plate 45 is also adjusted in the same direction, so that the pressing angle a is not affected by the adjustment of the mounting plate.

The swinging adjustment of the swinging plate 45 is performed using two screws 6 provided near the diametrically opposed flat portions of the upper end portion of the fixing pin 66.
This is done by adjusting 5.

The fixing pin 66 is press-fitted into a hole 67 of the mounting plate 44, and its upper end portion protrudes into an enlarged hole 69 formed in the swing plate 45.

The adjustment screw 65 is screwed into the swing plate 45 and engages with the flat portion and projects into the hole 69 so that the angle of the swing plate can be adjusted by loosening one screw and tightening the other screw. do.

This adjustment is made while the rolling machine 10 is in operation, so that the operator can easily adjust it to correct the pressing angle a under dynamic conditions.

In order to be able to adjust the lateral spacing between the dies 13, 14, the third member 46 (FIG. 6) of the stack consists of a sliding plate mounted on the top of the rocking plate 45, which The movable plate is supported so as to be linearly adjusted back and forth along a path extending substantially perpendicular to the reciprocating path of the movable die 14.

In this case, the sliding plate 46 is adjustably fixed to the rocking plate 54 by a screw 70 that passes through an elongated slot 71 and a hole 73 in the rocking plate and is screwed into a hole 74 in the mounting plate 44. .

A key 75 with a long rectangular cross section is fixed in a similarly shaped throttle 76 on the lower side of the sliding plate 46 and is slidably inserted into the upper slot 77 of the rocking plate 45 to move the sliding plate back and forth. guide you to do so.

Such movement is produced by rotating a screw 79 (FIG. 6) at the rear of sliding plate 46.

This screw is tubular and is located behind the sliding plate 46 in the block 8.
0, and the block 80 is inserted into a pocket of the rocking plate 45 and bolted to the rocking plate.

The second screw 81 is inserted into the screw 79 and the hole 8 of the sliding plate 46 is inserted.
3 (Fig. 4).

The front end of screw 79 abuts the rear end of the sliding plate, thus screw 8
1 is loosened, the tightening and loosening of the screws 76 serve to adjust the sliding plate back and forth, respectively.

Therefore, the lateral gap between the dies 13 and 14 is simply the screw 81.
It can be adjusted by loosening and changing the setting of screw 79.
This adjustment does not affect the pressing angle a of the die, ie the longitudinal alignment.

According to the present invention, the feed track 26 and the feed fingers 28 are adjusted by the sliding plate 46 directly by adjusting the screw 79 and indirectly by adjusting the mounting plate 44 or the swing plate 45. automatically adjusted when

For this purpose, the internal passageway 30 of the slider 29 of the feed finger 28 is provided with a slotted hole 85 formed in the slider 85 of the sliding plate.
(FIG. 6) screwed into the slide plate 46).

Furthermore, the track 26 is fixed to a bracket 86 which is fixed by screws 90 attached to an elongated block 87 inserted into the throttle 89 of the sliding plate 46, with the block 87 directly below the track.

Therefore, the guide track 26 and the feed fingers 28 are connected to the plates 44,
45, 46 are adjusted together with the sliding plate 46 to maintain the same relationship between the track, fingers and fixed die 13.

In order to make it possible to adjust the taper angle of the fixed die 13, the fixed die is provided with a fourth holder which is pivotable about an axis extending approximately parallel to the reciprocating path of the movable die 14.
It is held by a member 47 of.

The die holder 47 is placed on the top of the sliding plate 46 and precisely positioned between the block 87 and the short block 91 (FIG. 6), the block 91 being inserted into the slot 93 on the upper side of the sliding plate and screwed into the screw 94. It is fixed to this sliding plate by.

As shown in FIGS. 4 and 6, the pivot pin 95 passes through a hole 96 (FIG. 6) in the lower front portion of the die holder 47 and has its end inserted into the hole 97 in the front end portion of the guide blocks 87, 91. It is firmly fixed.

By swinging the die holder 47 up and down about the pin 95, the taper angle of the fixed die 13 changes.

This oscillation is caused by the tubular screw 9 screwed into the die holder 47.
9 (Figures 4 and 6).
The lower end of this screw 99 abuts the sliding plate 46, and a second screw 100 passes through the screw 99 with a radial gap and is screwed into a hole 101 (FIG. 6) in the sliding plate.

After the die holder is adjusted to set the proper taper angle, the die holder is clamped in place by locking screw 103 (FIG. 4).

The lock screw passes downward through the die holder 47 with a radial gap and is screwed into the hole 104 (FIG. 6) in the sliding plate 46.

From the above, the present invention provides a new and improved flat die rolling machine 1.
0, and in this rolling machine, the fixed die 13 is fixed for the purpose of setting the proper longitudinal alignment, lateral clearance, pressure angle a and taper angle between the fixed die and the movable die 14. It is clear that it is supported in a unique way in a stack of four members 44, 45, 46, 47 which are adjustable relative to each other so that the position of the die can be easily changed.

It should be understood that graduations may be provided on the various members to allow the members to be precisely adjusted to a predetermined position, thus facilitating machine setup.

Preferred embodiments of the present invention are summarized as follows.

1 a support body, a fixed die and a movable die provided on the support body and having a wedge-forming element extending along opposing surfaces;
means for reciprocating the movable die relative to the fixed die between first and second positions along a first path extending in substantially the same direction as the wedge-forming element; a mechanism for feeding the wire material between the dies at each position, and a device for mounting the fixed die on the support body so as to selectively adjust the fixed die with respect to the movable die, the mounting device is mounted on said support for linear adjustment back and forth along a passageway extending generally parallel to said first passageway so as to adjust the longitudinal alignment of the thread-forming elements of said die. angular adjustment back and forth relative to said first member about an axis extending substantially perpendicular to said first passageway so as to adjust the pressing angle between said first member and a thread forming element of said die; a second member attached to the first member and the die along a passageway extending generally perpendicular to the first passageway so as to adjust the lateral clearance between the neck-forming elements of the die; Second
a third member attached to the second member so as to be linearly adjustable back and forth with respect to the member; a fourth member that holds the fixed die and is attached to the third member so as to be angularly adjustable back and forth with respect to the third member about an axis extending in parallel; A flat die rolling machine that is attached to the member No. 3 and adjusted together with the fixed die when any of the first, second, and third members is adjusted.

2. A thread rolling machine according to claim 1, wherein the feed mechanism is held by one of the four members and is adjusted when this member or the other two members are adjusted.

3 further comprising a pivot element for mounting said third member for pivoting about said perpendicular axis, said axis substantially coinciding with an effective leading edge of a neck-forming element of said fixed die. The described thread rolling machine.

4 a support, a fixed die and a movable die provided on the support and having a thread-forming element extending along opposing surfaces; a device for reciprocating the movable die back and forth with respect to the fixed die between second positions; a mechanism for feeding arsenic to the die each time the movable die is in the first position; a device for attaching the fixed die to the support for selective adjustment relative to the movable die;
The mounting device holds the stationary die, is attached to the support, extends substantially perpendicular to the passageway, and pivots about an axis substantially coincident with the effective leading edge of the neck-forming element of the stationary die. A flat die rolling machine comprising a member whose pressing angle can be adjusted in between and a device that selectively swings the member back and forth about the axis and fixes the member at a fixed position with respect to the axis. Machinery.

5 further comprising a pivot element extending along the axis and mounting the member to pivot about the axis, the pivot locking device being operative when rotated to pivot the member about the pivot element; A thread rolling machine according to claim 4, comprising a thread forming element.

6 a support, a fixed die and a movable die provided on the support and having a thread-forming element extending along opposing surfaces; a device that reciprocates the movable die back and forth with respect to the fixed die between second positions; a mechanism that feeds the web material between the dies each time the movable die is in the first position; an apparatus for attaching the stationary die to the support for selective adjustment with respect to the movable die, the attachment apparatus adjusting longitudinal alignment and lateral spacing between the die forming elements; first and second members mounted for adjustment linearly back and forth along passageways extending substantially parallel and generally perpendicular to said first passageway, respectively; and second
A flat die thread rolling machine comprising first and second thread elements which operate when rotated to respectively engage and adjust the respective members.

7 a support, a fixed die and a movable die provided on the support and having a thread-forming element extending along opposing surfaces; a device for reciprocating the movable die back and forth with respect to the fixed die between second positions; a mechanism for feeding the web material between the dies each time the movable die is in the first position; a device for attaching the fixed die to the support for selective adjustment relative to the movable die;
the mounting device holds the fixed die and is attached to the support body so as to be able to swing about an axis extending substantially perpendicular to the passage to adjust the taper angle between the dies; A flat die thread rolling machine comprising a thread element that engages with the member and operates when the member is rotated to swing about the axis.

[Brief explanation of the drawing]

FIG. 1 is a partial side view of a new and improved thread rolling machine utilizing the unique features of the present invention; FIG. 2 is a section taken along line 2-2 in FIG. 1; FIG. A sectional view taken approximately along line 3-3 in Figure 1, Figures 4 and 5 are respectively
FIG. 6 is an enlarged partial cross-sectional view taken approximately along lines 4-4 and 5-5 in the figure, and FIG. 6 is an exploded perspective view of a portion of the rolling machine. 10...Flat die rolling machine, 11...Material, 13.
... Fixed die, 14... Movable die, 15... Support body, 16... Substrate, 17... Guide shoe, 19...
Movable die holder, 26...Slotted track, 28.
... Feeding finger piece, 43 ... Thread forming element, 44
．． 45. 46.47... 113th to 4th members.

Claims (1)

[Claims] 1 a support, a fixed die and a movable die provided on the support and having a thread-forming element extending along opposing surfaces, and a first die extending in the same direction as the thread-forming element;
a device for reciprocating the movable die back and forth between a first position and a second position relative to the fixed die along a path of the fixed die; A device for supplying a wire material between a die and a movable die, and a device for attaching the fixed die to the support so as to be selectively adjustable with respect to the movable die, and the fixed die is attached to the support. The apparatus is mounted for linear adjustment back and forth along the first path to adjust the longitudinal alignment and lateral spacing between the wedge-forming elements of the fixed die and the movable die, respectively. first and second members;
The fixed die and the movable die are angled back and forth about axes extending substantially perpendicularly and parallel to the first passage so as to be able to adjust the pressure angle and taper angle between them. adjustably mounted third and fourth members, one of the first to fourth members carrying the fixed die and one of the other three members being adjustable. The flat die rolling machine is supported on three other members to be adjusted when it is rolled.