JPS6110436A - Operation controller of fusion welding device of resin pipe - Google Patents

Abstract

PURPOSE:To enable to perform a series of control, by locking an operation lever by making a locking cog operate through nondriving of a solenoid operating by detecting a pressure increase exercising over an ejecting shaft and vise by a method wherein the solenoid is pressed by a thimble. CONSTITUTION:End faces of small diameter resin pipes (a), (b) are heated for a predetermined period of time by a method wherein the pipes (a), (b) are grasped by vises 6, 7, a T-shaped heater is suspended between them, an operation lever 9 is rocked to a I position, a thimble 18 is moved leftward by gears 26-28 and a rack 19, an ejector shaft 15 and the vise 7 are moved leftward without compressing a pressure detecting spring 22, pressure-welding force is strengthened by the pressure detecting spring 22 when the pipe (b) is abutted against a heating plate, pressure of the vise 7 is detected through pressing of a locking switch 29 by the thimble 18, the solenoid is made nonoperatable and the vise 7 and the operation lever 9 are made incapable of making movement. The pressure-welding force is weakened by driving the solenoid after that, the heater is removed, and the operation lever 9 is rocked to a II position for fusion welding.

Description

Detailed Description of the Invention The present invention provides a first vise that releasably grips a resin pipe or (H fat socket vibrator) on the negative side, and a first vise that releasably grips a 71 fat vibrator or resin saddle pipe on the other side. A second vise is installed on the machine base, with one vise fixed in position, or a double vise slidably movable, and the welding surfaces of the pipes on both sides are pressed against the heating plate, and welding is performed without the heating plate. It is equipped with a swinging lever that controls the pressure welding of the surfaces (in a fat pipe welder, a slidable vise is fitted with a pinion that is linked to the operation of the operating lever and a protruding shaft protruding from the vise). The system is controlled by a rack drive caused by the meshing of a sleeve with a rack that pushes the vise through the protruding shaft by a pressure detection spring, and is activated by detecting an increase in the pressure exerted on the protruding shaft and the vise by being pushed by the sleeve. When the solenoid is deactivated, the lock teeth are activated to lock the operating lever, etc. In particular, the lock is applied to maintain the welding pressure of the heated resin pipe at a constant value, and when a predetermined time elapses. When the welding is completed and the lock is released, a shock is applied to the resin pipe to prevent the welded part from peeling due to tension, and the rack transmission mechanism and the hook are meshed together. The feature is that a series of controls can be performed by a configuration in which a lock gear is provided on the shaft of the interlocking pinion.

An embodiment of the present invention will be described with reference to the drawings.

In this embodiment, a first vice 6 with a fixed position is provided on one side of the machine base 1 to releasably grip one resin pipe a, and a resin pipe b having the same diameter as the pipe a can be released on the other side. A slidable second vise 7 that grips the pipes a and b is provided, and the second vise 7 is moved closer to the first vise 6 using the operating lever 9 to move the pipes a and b.
This is an example of a welder that welds the end faces of the two ends together.

The machine base 1 is provided with a column 2 having a first vise 6 on its upper end and a column 3 with an operating lever 9 pivoted thereon in opposition to each other, and a mounting part 8 for a second vise 7 between the two branches 2.3. A pair of front and rear round bar-shaped rails 4, which are slidably mounted, and a connecting rod 5 are passed and fixed.

The first vise 6 and the second vise 7 are both the lower fixed piece 1
0, a movable piece 11 whose one end is pivoted on the fixed piece and swings in the direction indicated by the arrow in FIG. For gate-shaped fastening that swings in the y direction and holds the free end of the movable piece 11 using the set screw 13 at the upper end! 4:12. The fixed piece 10 and the movable piece 11 have semicircular arc-shaped opposed grooves 10 for gripping the pipe.
A and lla are provided, and semicircular arc-shaped auxiliary pieces 10b and llb for gripping a small-diameter pipe can be fitted into the valley grooves.

A protruding shaft 15 that protrudes outward through the support column 3 is fixed to the mounting portion 8 of the second vise 7, and the shaft 15 has a slide whose rear end engages with a nut-shaped collar 16 at the outer end. Movable cannula 18
A hook 19 is formed on the lower surface of the sleeve tube 18, and a blind hole 20 is provided at the front end. 2
Reference numeral 1 denotes a cap-shaped adjustable spring receiving piece which is screwed onto a screw 17 provided on the entire outer periphery of the protruding shaft 15 and a part of which is inserted loosely into a blind hole 20. A pressure detection spring 22 is provided which is loosely inserted into the blind hole 20 and has both ends pressed against each other. Applicable spring 2
Adjustment of the spring elasticity in step 2 is performed by loosening the spring receiving piece 21 on the screw 17.

The support 3 is provided with an insertion hole 3b that crosses the lower side of the insertion hole 3a,
A shaft 23 to which a pinion 24 which meshes and engages with the rack is fixed is passed through the insertion hole 3b and supported. The shaft 23
A small gear 25 is provided at one end of the shaft 23, and the other end of the shaft 23 is passed through a lock casing 31 attached to the support column 3. The operating lever 9 is pivoted below the small gear 25 and fitted into a pongee 26 to which a gear 27 is fixed, so that it can freely swing.
A hollow gear 28 is interposed between the pinion 7 and the small gear 25.

In the mounting portion 8 of the second vise 7, there are push buttons 29 on the path through which the mantle 18 advances against the elasticity of the pressure detection spring 22.
The lock switches 29 and 30 with protruding portions 30a and 30a are provided in parallel as shown in FIG. The circuit is closed and the auxiliary piece 10b, J
A changeover switch (not shown) is provided that operates so that the circuit of switch 30 is closed in relation to disconnection of ib.

Inside the lock casing 31, the lock gear 32 is attached to the shaft 23.
A friction brake puller 14 is attached to the casing 31 behind which the lock gear 32 is pressed against the lock gear 32 by the action of a spring 33. In addition, the lock gear 32 is connected to the operating lever 9.
is moved to either the solid line position in Figure 1 or the two positions (N (II)) indicated by the chain line, and is displaced to the left and right of the vertical line passing through the center of the shaft element 23 as shown in Figure 3. Vertical to the bin 35 @
Hang the fixed toggle spring 36 below L. Above the lock tooth ratio 32, a plant gear 38 which is sucked in the pulling direction together with the drive of the solenoid 37 is connected to the lock gear 32.
A lock tooth 39 is provided which meshes with the lock tooth 39.

The lock tooth 39 is attached to the horizontal shaft 40 of the plunger 38 so as to be able to move slightly, and furthermore, the guide column 41 identified on the tooth 39 is passed through the guide member 42 attached to the lock casing 31, and the guide column 41 is inserted into the gap between the guide column 41 and the guide member 42. A pressing spring 43 is provided which engages the lock tooth 39 with the lock gear 32 to lock the solenoid 37 when the solenoid 37 is not driven. The solenoid 37 has the push buttons 29a and 31a of the locking switch 29 or 30 connected to the real pipe 18.
Connect to a circuit that is pushed to close. The lock described above is released by driving the solenoid 37.

In this embodiment, the auxiliary pieces 10b and llb are fitted, and the small diameter resin pipes a and b are connected to the first vise 6 and the second vise 7.
The manner in which the end faces are heated and welded will be explained when the end faces are held together and the welded surfaces are aligned by cutting and are in a protruding state.

When heating the end face of a resin pipe, as shown in FIG.
and the resin pipes of the second vise 7, swing the operating lever 9 from the position shown by the solid line in FIG. 1 to the position shown by the 4M line (1), Shaft 2
Rotate 3. At that time, the rack 8 due to the meshing of the pinion 24 and the hook 19! With this mechanism, the real pipe 18 advances to the left in the wk1 diagram, and the pressure detection spring 22 moves the protruding shaft 15, the second vise 7, and the resin pipe b to the left via the adjustable spring receiving piece 21 without causing almost any compression. do. After the resin pipe a of the first vise 6 and the resin pipe b of the second vise 7 come into contact with both sides of the heating plate 52, the real pipe 18 compresses the pressure detection spring 22 as shown in FIG. The heating plate 52 is moved to strengthen the pressure against the heating plate 52. Finally, the push button 29a of the locking switch 29 is pushed by the real tube 18 as shown in the figure, and the pressure in the second vise 7 caused by the compression of the pressure detection spring 22 is electrically detected.

The solenoid 37 had been driven until then, and the plunger 38 and the lock tooth 39 had not been pulled up against the elasticity of the pressing spring 43 to lock the lock tooth $32. rotates clockwise in FIG. 3, raising the bottle 35 vertically. The action of the toggle spring 36, which has moved to the right position (1), and the action of the friction brake device f34 prevent the operating lever 9 from returning to its original position with its own blade, but the locking switch 29
As described above, the pressure is detected by the real pipe 18, and at the same time, the circuit of the solenoid 37 is opened to deactivate it. Therefore, the lock tooth 39 is pressed against the plunger 38 by the pressing spring 43.
The second vise 7 protrudes and engages with the lock gear 32.
, makes the operating lever 9 etc. immobile.

The heating time by pressing the resin pipe a%b against the heating plate 52 is set by a timer (not shown), and as the solenoid 37 is opened for a certain period of time, the solenoid 37 is opened by the timer.
The circuit is closed and driven, and the lock teeth 39 and the like are pulled up by the pressure spring 43 to release the lock. Therefore, the pressure detection spring 22 expands and the real pipe 18 is moved to the collar 1 as shown in FIG.
However, since the toggle spring 36 acts on the lock gear 32 to prevent free rotation in the counterclockwise direction in FIG. 3, and the friction brake device 34 also acts, the lock gear 32 cannot be operated. The lever 9 does not return to the original position 11, but loosens the pressure of the resin pipe a%b against the heater 51 by the pressure detection spring 22, thereby allowing the vessel 5 to be freely removed. Of course, this heating can only be done by pressing the resin vibrators a and b against the heating plate 52, and if the pressing is carried out with the pressure detection spring 22 being compressed by the aforementioned lock, there is a risk that a small amount of melt may flow from the heating end surface. After a short period of time has elapsed after the above-mentioned locking, the solenoid 37 is driven by a timer to release the lock, and the heating is controlled by the toggle spring 36, the friction brake device 34, and the weight of the operating lever 9 located at the IJI line (1). This is done by mechanically balancing the heating time, and in some cases, the end of the heating time is announced with a signal sound or the like.

After the heating described above, quickly remove the heater 51, rotate the operating lever 9 to the chain #1 (II) position in Figure 1, and engage the pinion 24 and rack 19 to move the second vise 7. It further moves to the left and presses the end surfaces of I (fat pipes a and b).The second press is performed by the sleeve tube 18 under compression of the pressure detection spring 22 in the same way as above, so the actual pipe 18
moves on the protruding shaft 15 in the same manner as described above, and with this movement, the push button 29a of the locking switch 29 is pressed, and the solenoid 3
7 is deactivated to create a lock and maintain welding.

The pin 35 rotates one turn to the position (■) in FIG. 3 to further strengthen the torsion action of the toggle spring 36.

The welding holding time is set by a timer (not shown), and when the time elapses, the solenoid 37 is driven to release the lock. As a result of this release, the pressure detection spring 22 expands in the same way as before, and the control lever 9 and vJ2 vise 7 are not returned to their original positions by simply hitting the collar 16 with the C strainer tube 8, which prevents the pipe from returning to its original position. The welded end faces a and b are only loosened from pressure, and the tensile force in the h direction does not work to separate the Ajf end faces, so the welding is not weakened.

After this welding, the pipes a and b are released from being held by the first and second vises 6.7 after a suitable air cooling period. As described in 1i11, the circuit is switched to the switch 30 when welding the large diameter resin vibrators a and b.
Switch 29 does not work at all even if the cannula touches it. The switch 30 contacts the push button 30a after the amount of compression of the pressure detection spring 22 is exceeded by the sleeve 18. That is, the pressure changes depending on the difference in diameter between pipes a and b.

In Aft, when a pressure detection signal is output from the locking switch 29 or 30 immediately after the mantle 18 compresses the pressure detection spring 22 in both heating and welding,
Since there is an inconvenience that locking occurs regardless of the positional difference between heating and welding (in Fig. 1, the positional difference between the operating lever positions (]) and (11)), late-acting detection that causes a slight time delay is necessary. It's best to try to do it. In other words, the operating lever 2
Place 8! (I) Do not release your hand immediately after moving to (It), but only after confirming the lock.

O (There are two types of vibrator welders: one that connects pipes of different diameters by welding them to both ends of a short socket, and the other that welds a saddle pipe to the side of one pipe. There is also a model in which welding is performed by moving not only the first vise in the direction of the approach force using each operating lever, but the present invention can be applied to any of these models.

As clarified by the description of the above embodiments, the present invention has the following features:
The pinion 24 rotates by operating the operating lever 9,
A rack mechanism is constructed by engaging a protruding shaft 15 protruding from the vise with a rack 19 provided on a sleeve 18 which is fitted into a slider 111 and engaged with the protruding rear end of the shaft 15. The other end of the pressure detection spring 22, which locks onto the protruding shaft 15 and detects the increase in pressure in the vise that occurs during heating or welding, is hung on the sleeve tube, and the shaft 23 of the pinion 24 is also locked. A solenoid 37 is equipped with a gear 32 and becomes non-driven when the pressure set in the pressure detection spring 22 is detected.
The lock tooth 39 corresponding to the lock gear 32 locks the operating lever 9, thereby locking the vise. The shock generated by the tube 18 and the pressure detection spring 22 at the time of unlocking is not transmitted to the vise, but is slightly transmitted only to the operating lever, which does not occupy much space for installation, and ensures interlocking operation. The rack mechanism has an advantageous effect.

[Brief explanation of drawings]

The attached drawings show one embodiment of the present invention, in which Fig. 1 is a partially cutaway side view, Fig. 2 is a front view of the same, and Fig. 3 is a lock gear 32.
4.5 is a cutaway side view illustrating the operation of the sleeve 18, and FIG. 6 is a side view of the heater 51. 1 → Isodai 6 → 1st vise 7 → 2nd vise 8 → Take 1
Part 1 9 → Operating lever 15 → Projection shaft 16 → Flange 18 → Mantle tube 19 → Rack 21 → Spring receiving piece 22 → Pressure detection spring 23 → Shaft 24 → Pinion

Claims (1)

[Claims] A first vise that releasably grips the resin pipe or resin socket pipe on one side, and a second vise that releasably grips the resin pipe or resin saddle pipe on the other side.
Either one vise is fixed in position, or both vises are slidable and installed on the machine base, and the welding surfaces of the pipes on both sides are controlled by pressure welding to the heating plate and the welding surfaces that are applied without the heating plate. In a resin pipe welder equipped with a swinging lever, one or both of the vices made slidable are provided with a protruding shaft that protrudes rearward in the sliding direction, and the protruding shaft has a protruding rear end. A freely sliding sleeve to be engaged, an adjustable spring receiver screwed onto the protruding shaft on the front side of the sleeve, and a pressure detection spring in contact with the spring receiver and the sleeve are provided. A rack is formed, a shaft that rotates in conjunction with the operation of the operating lever is provided in a direction across the protruding shaft, a pinion that meshes with the rack and a locking gear are attached, and a pressure is applied to the locking gear. An operation control device for a resin pipe welder, characterized in that a lock tooth is installed that engages the lock gear by a solenoid that is deactivated in relation to the detection of a constant pressure set in a detection spring.