JPH0555249B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an automatic blade attachment device for a saw, etc., which brazes chips made of carbide or the like to saw teeth.

(Prior Art) Conventionally, as an automatic cutting device for a saw or the like, one disclosed in Japanese Patent Application Laid-open No. 187420/1989, which was filed by the present inventor, is known.

This device is equipped with a push rod drive device that intermittently pushes a chip push rod toward the terminal end in the transfer path, and intermittently pushes a single chip into the transfer path from the starting end to the terminal end of the transfer path. A chip supply device, a wax supply device that intermittently supplies strips of wax toward the chips, a press machine that cuts off the tip of the wax and polymerizes it into chips, and a heating device that heats the chips are arranged in sequence. This device was equipped with a tooth feed device that pressed the sawtooth shape one tooth at a time to the chip that arrived at the end of the transfer path, and was able to automatically apply the blade to the sawtooth.

(Problems to be Solved by the Invention) However, since the conventional blade device such as the above-mentioned saw uses a push rod to feed the chips into the groove-shaped transfer path,
When the feed speed is increased, the chips dance and become unstable, leaving the push rod and making it impossible to determine the position.

When the size of the chip changes, the transfer path, push rod, chip direction changing piece, solder piece cutter, etc. must all be replaced. Therefore, each chip must be equipped with the above-mentioned components, and these parts must be replaced each time the chip changes. Must be replaced.

Since flux is supplied to the chips while they are moving through the transfer path, flux adheres to the transfer path, push rod, etc., causing chips to become clogged or ejected, so frequent cleaning is required to prevent this. It takes a lot of effort.

It had the following problems.

The present invention was made in order to solve the above-mentioned conventional problems, and during the process of sandwiching and feeding the chips by the pinching and feeding means, flux and solder pieces are supplied and soldered, and the flux melts and disappears. The purpose of the present invention is to provide an automatic blade setting device such as a saw, which can stably feed the chip at high speed and accurately position the chip by returning the nip feeding means after that, and is completely free from trouble due to flux.

(Means for Solving the Problems) As shown in the embodiments shown in FIGS. 1 to 25, the automatic cutting device for saws and the like according to the present invention, as shown in the embodiments shown in FIGS. A supplying means A for feeding chips t one by one in the same direction, and a saw s which holds the supplied chips t and transports them to the blade attachment position X.
a means B for feeding the chips t back after pressing them against the teeth c of the chip t; a supplying means C for supplying the flux f for placing a fixed amount of flux f on the chips t fed by the means B for feeding the chips; A feeding means D for cutting a piece of wax p into a certain size and placing it on top, and a feeding means for the saw s, which supports the saw s and sends it out so that its teeth c face the blade position, and returns after applying the blade. E, an indexing means F for the saw s which rotates the saw s and positions the tooth c to be attached onto the tip t; and an indexing means F for the saw s, which opens the saw s until the time of indexing and fixes it after indexing. A fixing means G for the saw s to be cut, and a heating means H for the teeth c and the tip t of the saw s provided so as to enclose the teeth c and the tip t of the saw s to be cut at the cutting position X. The configuration is as follows.

(Function) The apparatus configured as described above randomly introduces known carbide chips t into the chip supply means A, and
When the supply means A is vibrated, the chip t first rides horizontally on the taxiway 4, becomes vertical in the stage 5 of the taxiway 4, and
Next, proceeding through the part with the narrow groove 7, all the ones with the edge part e facing inward fall, and only the one with the edge part e facing inward lies down by the next paragraph 6, The edge portions e are all aligned so as to face rearward, and advance through the guide path 9 to the original position of the feeding means B. Then, the pinching feeding means B holds the lower side of the chip t and passes under the supplying means C for the flux f and the supplying means D for the soldering piece p, and advances to the blade attachment position X. A supplying means C for the flux f supplied from the pressurized tank 34 pours out a certain amount of the flux f sent from the pressurized tank 34 onto the tip t from the dispensing needle 36 and places it on the tip t, and a supplying means D for the wax piece p supplies the flux f to the tip t. Pull out the band 46 by a certain length,
It is cut by the cutting blade 48 and placed on the flux f.

On the other hand, the indexing means F of the saw s rotates the saw s to press the tooth c to be attached to the blade position X against the regulator 99 provided in front of the tooth c, which is provided in front of the saw s.
Position the tooth c. Then, the feeding means E of the saw s
sends the saw s to the blade attachment position X, and the fixing means G of the saw s clamps and fixes the saw s from both sides.

At this time, the chip t on which the flux f and the solder piece p are placed is moved to the tip position X by the pinching feeding means B.
The heating means H enclosing the teeth c of the saw s and the tip t generates heat, heating the teeth c of the saw s and the tip t, and melting the wax piece. P is melted, thereby joining the chip t to the tooth c of the saw s, thereby completing the so-called attached blade.

When the cutting edge is finished in this way, the feeding means B of the tip t releases the tip t and returns to its original position, and the saw s
The fixing means G releases the saw s, and the indexing means F releases the saw s.
is rotated by more than one tooth and indexed so that the next tooth c faces the blade position X. The feeding means E of the saw s returns the saw s to its original position to complete one cycle, and thereafter repeats the same action as described above to efficiently feed all the teeth c of the saw s under uniform conditions. It is used to perform tsukeba.

(Embodiment) Next, an example of the implementation of an automatic blade setting device for a saw or the like according to the present invention will be described based on the drawings.

FIG. 1 is a front view showing the entire device, and includes a chip supplying means A for feeding the chips t shown in FIGS. 4 and 5 in the same direction into the machine body 1, and a chip t supplying means A that feeds the chips t shown in FIGS. 4 and 5 in the same direction. After sending the tip to the blade position 17 and 18.
As shown in the figure, there is a supply means D for the solder piece p on which the solder piece p is placed, and a saw s is supported so that its teeth c are at the blade position X.
The feeding means E of the saw s is sent out so as to face the blade and returns after the blade has been applied, and the saw s sent to the blade position X is rotated.
An indexing means F of the saw s that positions the tooth c to be attached onto the tip t, a fixing means G of the saw s that opens the saw s until the time of indexing, and fixes it after indexing; The tooth c of the saw s to be cut is placed at the position X so as to enclose the tooth c, and the heating means H for heating the tooth c and the tip t are arranged at the relative positions shown in the figure.

However, the supply means C of the flux f is the chip t.
This is disposed between the feeding means A of the chip t and the nipping feeding means B of the chip t, but in order to make the drawing easier to understand, this is shown moved above the body 1.

Next, the details of each of the above-mentioned means A to H will be explained.

As shown in FIG. 2, the chip t supply means A spirally rises from the bottom to the top on the inner periphery of the dish-shaped container 3, which is given a reciprocating rotational movement within a certain angular range by an electromagnetic drive unit 2. A taxiway 4 is provided, and this taxiway 4
By providing two paragraphs 5 and 6 in the middle of the guideway 4, the taxiway 4 is divided into a front part, a middle part, and a rear part, and the width of a part of the middle part is narrowed, as shown in FIG. An acute-angled groove 7 is provided so that the chips t thrown into the dish-shaped container 3 are moved to the front part of the guiding path 4 by the swinging force generated by the reciprocating movement of the container 3 as shown in FIG. It rides horizontally as shown, and when it advances to paragraph 5, it falls from paragraph 5 and becomes vertical as shown in the same figure, and when it advances through the middle part of the taxiway 4 and passes over the narrow groove 7, the fourth The objects in the postures shown in FIGS. It passes here stably, reaches the next paragraph 6 and falls from here, then lies down, turns the edge part e backward, and twists the rear part of the taxiway 4 (not shown in the drawing) to reach the left end in Figure 3. It is unified into the posture shown in FIG. 8, and is sent into the tunnel-shaped guide path 9 shown in FIGS. A spring-type movable holding piece 11 arranged on the upper side and a fixed holding piece 1 following the holding piece 11.
1', the movement is stopped by a stop hook 10.

The means B for feeding the chip t is shown in FIGS. 9 and 10.
As shown in the figure, the front side protrusion 12 at the lower end is
The upper portions of a pair of pinching arms 15, 15 are pivotally connected to a base 14 which is supported by a base plate 3 and is movable in the front and rear directions, and at the upper end of each of them, at the tip of the guide path 9,
Ceramic clamping pieces 16, 16 that clamp the chip t to be restrained are attached to the restraining hook 10, and the clamping arm 1 described above is attached.
The lower part of 5 and 15 corresponds to the slope 1 which slopes outward.
rollers 20 and 20 attached to both sides of a lifting cam 19 fixed to one end of the lever 18 are engaged with these slopes 17 and 17, and an operating lever 22 is attached to the support shaft 21 of the lever 18. The fixed rollers 23, 23 supported at their tips are engaged with the first cam 25 fixed to the camshaft 24, and when the first cam 25 pushes the operating lever 22, the roller 20 of the elevating cam 19 is moved. , arm 1 with 20 in between
5, 15 between the slopes 17, 17, the pinching arms 15, 15 are closed, the tip t is pinched between the pinching pieces 16, 16, and in this state the cutting edge is finished at the cutting position X. hold until

A lever 27 is connected to the base 14 by a rod 26 as shown in FIG. 11, and a second cam 29 fixed to the camshaft 24 is engaged with a roller 28 attached to the tip of the lever 27. Then, by pushing the lever 27 by the second cam 29, the clips 16, 16 are advanced from the above-described position of the stop hook 10 to the blade attachment position X, and then returned to their original positions.

Furthermore, an arm 30 is fixed to the horizontal axis 13 of the overhanging part 12 on the base 14 as shown in FIG. 12, and a lever 31 is connected to this arm 30.
A roller 32 attached to the tip of the lever 31 is engaged with a third cam 33 fixed to the camshaft 24, and as the third cam 33 pushes the lever 31, the clamps 16, 16 are engaged with the stopper hook. When the tip t is pinched at position 10, it rises to a height where it comes off the stop hook 10, and once it passes the stop hook 10, it goes down, and then temporarily rises at the supply position of the flux f and the supply position of the solder piece p. , the flux f and the solder piece p are firmly attached by pressing, are pressed against the teeth c of the saw s at the cutting edge position The opening/closing, advancing/retracting, and elevating/lowering operations of 16 are performed in a complex manner.

The supply means C for the flux f is a tank 34 which is appropriately pressurized with gas or the like, as shown in FIG.
Connect the tube 35 to the
, three pressers 37, 38, and 39 are arranged in parallel in the middle of the tube 35, and the one in the middle is flat, and these pressers 37, 38, and 39 are rotated in conjunction with each other by a small motor 40. Cam 41,4
2 and 43, the flux f quantified between the pressers 37 and 38 is pushed out by the presser 39 by repeating the sequentially suppressing and releasing operations as shown in FIGS. 14 to 16. , a constant amount of flux f is always poured out from the extraction needle 36 onto the tip t.

As shown in FIGS. 17 and 18, the supply means D for the solder piece p includes a pair of feed rollers 44a and 44b.
A long solder belt 46 wound around the reel 45 is sandwiched between the reel 45 and the solder belt 46 is rotated, and a certain dimension of the solder belt 46 is adjusted to the receiving blade part 4.
7, the solder strip 46 is cut by the lowering of the cutting blade 48, and the solder piece p is dropped onto the flux f on the chip t. A camshaft 49 is provided on the camshaft 48, and a cam 50 that engages with the head of the cutting blade 48 is fixed to the camshaft 49. A lever 51 that extends laterally is attached to the camshaft 49, and the lever 51
and a feed pawl 53 that engages with a ratchet wheel 52 attached to the roller 45 to feed the ratchet wheel 52 in increments, are connected by a rod 54, and the camshaft 4
A lever 55 is fixed to the lever 55, a rod 56 is connected to the tip of the lever 55, and the rod 56 is connected to the fourth cam 57 fixed to the camshaft 24, and a roller 59 is connected to the lever 55.
is connected to the lever 60 engaged with the fourth cam 5.
When the lever 60 is pushed by the lever 7, the camshaft 49 is rotated, which is transmitted to the feed pawl 53 by the lever 51 and the rod 54, and rotates the ratchet wheel 52 and roller 44a, thereby feeding the solder band 46 to a certain size. Accordingly, the cam 50 operates the cutting blade 48 to cut the solder band 46 into solder pieces p.

As shown in FIG. 19, the feeding means E of the saw s has a saw shaft 64 to which an electromagnet 63 is fixed supported on a support piece 62 of the saw s sliding on a horizontal guide 61, and the electromagnet 63 is attracted to the saw shaft 64. The saw s is fixedly placed, and the rod 65 is connected to the support piece 62.
The tip of the roller 68 is connected to the upper part of a lever 67 via an adjustment tongue buckle 66, and the roller 68 attached to the tip of the lever 67 is engaged with the fifth cam 69 fixed to the camshaft 24. cam 69
When the lever 67 is pushed by the lever 67, the saw S is moved from the original position to the cutting edge position It is set as.

The indexing means F of the saw s has a gear 70 fixed to the saw shaft 64 as shown in FIG.
0, and the rack 71 is engaged with the shaft 7.
A piece 75 fitted to a swinging rod 74 whose one end is supported by a swinging rod 74 is connected by a ball joint 76, and an arm 78 extending on the opposite side of the swinging rod 77 is fixed to the aforementioned shaft 73. This arm 78 and a lever 80 supported by a shaft 79 are connected by an adjustment tambuckle 81, an operating lever 82 is fixed to the shaft 79, and a roller 83 attached to the tip of the operating lever 82 is connected to the cam shaft 24. the sixth cam 8 fixed to
4, and the sixth cam 84 engages the operating lever 82.
When you push the lever 80, tambuckle 81,
The swinging rod 74 is swung up and down by the arm 78,
When the rack 71 is pulled down to advance the saw s by one tooth and then returned to its original position, the regulator 85 in the fixing means G of the saw s
to perform an indexing operation to determine its position.

As shown in FIGS. 21 and 22, the fixing means G for the saw s includes a pair of clamping arms 85, 85 supported on shafts 86, 86 so as to sandwich the upper part of the saw s that has been moved to the blade attachment position X. The push rods 87, 8 of the saw s are provided at the bottom of the saw s.
7 are screwed together so that they can be adjusted forward and backward, and rollers 88, 88 are attached to the upper part, and a cam 9 is fixed to a cam shaft 89 provided between both rollers 88, 88.
0 is engaged, a lever 91 is fixed to the camshaft 89, a rod 92 is connected to this lever 91, and its tip is connected to the lever 9 supported by an intermediate shaft 93.
A roller 95 connected to one end of 4 and attached to the other end is engaged with a seventh cam 96 fixed to the camshaft 24, and when the seventh cam 96 pushes the lever 94, the rod 92 and lever 91 camshaft 8
9 is rotated, and the clamping arms 85, 85 are rotated by the cam 90.
The top is opened and the bottom is closed, and the saw s is clamped and fixed while the saw s is being attached, but when the attachment is finished, the saw s is released so that feeding and indexing can be performed without any trouble. As shown in FIGS. 23 and 24, this indexing means G has a positioning piece 97 attached to the part corresponding to the original position of the saw s by a shaft 98, and this positioning piece 97 is attached to the lower part. A regulator 99 is attached to press and position the teeth c of the saw s, and a roller 100 is attached to the upper part.A cam 101 fixed to the cam shaft 89 described above is engaged with this roller 100. By pushing the positioning piece 97 by the cam 101, the regulator 99 is moved during indexing.
is extended to a position where the teeth c of the saw s hit, and when the saw s moves to the blade position X, it is retracted so as not to interfere with this movement.

The heating means for the teeth c of the saw s and the tip t uses a high frequency coil 102.
is arranged so as to enclose the teeth c of the saw s and the solder chip p placed thereon, and when cutting, a high frequency current is supplied to heat the teeth c of the saw s and the chip t, and the wax is heated. The chip t is melted and thereby bonded and fixed to the teeth c of the saw s.

(Effects of the invention) The automatic saw blade device according to the present invention allows the chips to be fed while being pinched by the pinching feeding means, so that even if the feeding speed is increased, the feeding of the chips is performed stably and reliably, and even at high speeds. It is possible to attach a blade.

If you feed the chips by pinching them, you can not only press the chips against the flux and wax particles by giving them vertical movement during transport to ensure their adhesion, but also press the chips against the teeth of the saw. It is possible to ensure the attachment of the blade.

The chip is sandwiched between the pieces, and the flux and wax piece are placed on top of it, heated by a heating means, and the piece is returned after the blade is attached. At this time, the flux melts and disappears, preventing the transfer of the chip. There is no need to spend time cleaning the machine because it gets dirty.

With the pinch-feed type, even if the chip size changes, you only need to change the guide path, and there is no need to replace other parts.

It has the following unique effects.

[Brief explanation of drawings]

FIG. 1 is an overall view showing an embodiment of an automatic cutting device for a saw or the like according to the present invention. FIG. 2 is a plan view of the chip supply means in the same as above. Figure 3 is a developed view of the same taxiway as above. FIGS. 4A, 4B, and 4C are side views showing various postures of chips falling from the narrow groove of the same guideway. FIG. 5 is a side view showing the attitude of the chip passing through the same. FIG. 6 is an enlarged side view of the tunnel-shaped guideway and the stop hook and restraint piece provided at the rear thereof. Figure 7 is a front view of the same as above. FIG. 8 is a side view of the chip being taken out from the same as above. FIG. 9 is a front view of the chip feeding means. FIG. 10 is a side view showing the pinch arm and opening/closing mechanism same as above. FIG. 11 is a side view showing the back and forth movement mechanism same as above. FIG. 12 is a side view showing the elevating mechanism same as above. FIG. 13 is a longitudinal sectional side view of a part of the flux supply means. FIGS. 14 to 16 are cross-sectional views showing a state in which a fixed amount of flux is delivered according to the above.
FIG. 17 is a front view showing a means for supplying wax pieces. 18th
The figure is a side view showing the drive mechanism same as above. FIG. 19 is a side view showing the feeding means of the saw. FIG. 20 is a partially longitudinal side view showing the indexing means of the saw. FIG. 21 is a front view showing the saw fixing means. FIG. 22 is a side view showing the drive mechanism same as above. FIG. 23 is a front view showing the saw positioning means. FIG. 24 is a side view showing the same drive mechanism as above. FIG. 25 is a side view showing the arrangement of the saw and tip heating means. In the figure, A is a chip supplying means, B is a chip feeding means, C is a flux supplying means, and D is a chip feeding means.
E is a saw feeding means, F is a saw indexing means, G is a saw fixing means, and H is a saw and chip heating means.

Claims (1)

[Claims] 1. A chip supply means that feeds out the chips for cutting blades one by one in the same direction, which are thrown in randomly, and carrying the supplied chips to the cutting position by sandwiching them, and pressing them against the saw teeth when setting the blades. A means for feeding the returning chips by pinching, a means for supplying flux for placing a fixed amount of flux on the chips fed by the feeding means for feeding the chips, and a means for feeding a piece of solder by cutting a piece of solder into a certain size and placing it on top of the flux. , a saw feeding means that supports the saw, feeds the saw so that its teeth face the cutting position, and returns after cutting; and a saw that rotates the saw and positions the saw teeth to be cut above the chip. an indexing means for the saw, a saw fixing means for opening the saw until indexing and fixing it after indexing, and a saw tooth provided so as to enclose the saw blade and tip to be attached to the blade attaching position. An automatic cutting device for a saw, etc., characterized in that it is equipped with a chip heating means.