JPS5938021A - Saddle bonder - Google Patents

Abstract

PURPOSE:To raise quality and yield of moldings by preventing maloperations by a method in which a lock mechanism to automatically control the heating and pressing operations of a resin tube coupler is mechanically incorporated and automatically ON-OFF controlled in an interlocking manner with the operations. CONSTITUTION:A heater block 100 is contacted with a pipe P and a saddle S, a block 53 is locked by a lever 81, and the lever 81 is further pulled up to double pressing force to the holder. A micro switch is turned on, a lock mechanism operates, and the pressing and melting time t1 is counted by a timer T1. After the lapse of the t1, a solenoid switch is turned off and locking is released. The lever 81 is then returned, the switch is turned off, and the timer T1 is operated. After the removal of the block 100, the saddle S is contacted with the pipe P and the lever 81 is pulled up, whereupon a pressing force is generated, the switch is turned ON, and the pressing time t3 is counted by the timer T3. After the time t3, locking is released, but when the time t3 is elapsed due to the delay of operation, locking is not released and the product becomes waste product.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a saddle welding machine for fusing a pipe joint called a saddle made of resin (e.g., polyethylene) to a resin pipe (e.g., polyethylene sleeve or plastic tube). Regarding.

In recent years, resin pipes such as polyethylene pipes have been increasingly used as gas pipes in place of conventional metal pipes. When connecting a branch pipe to such a resin pipe from the lateral direction, it is carried out by heat fusing □ via a resin W joint (saddle). That is, a method is used in which the outside wall joint of the tube to which the saddle is to be joined and the saddle are pressed against a heater and melted under pressure, and the pressurized melted surfaces are crimped together at a predetermined pressure. After cooling for a certain period of time, the saddle is completely integrated into the tube.

In conventional fusing operations, it is very important to control the melting time under pressure applied to the heater and the time for crimping the melted surfaces together. Optimal values for these pressurized melting times and crimping times are predetermined according to the pipe diameter, saddle diameter, etc. In particular, when pressurized melting is performed, the pressure melting time and crimping time may be longer than the predetermined optimum time. Even if it is short, the reliability of the mittens will be impaired, increasing the possibility that the product will be defective. However, the work procedure for attaching one saddle M is to place a heater between the opposing end surfaces of the saddle and the saddle to be welded, bring the motherboard and saddle closer together in the axial direction, and press them against the heater. Until the joint surfaces melt / 311311 Once the temperature is constant, pull the mother eaves and saddle away from the heater, then quickly remove the heater, and then move the arm and saddle towards each other to press the welding surfaces together with the specified force. They are pressed together for a predetermined period of time, but since all of these operations are done manually, it is completely impossible for a single worker to do this. Conventionally, a worker who manages the pressurization m-axis time and crimping time is required separately from the worker who handles the heater throat, removal, or crimping the /9ide and saddle, and therefore a minimum of two people are required. The number of workers required was S-). If the crimping time is shorter than the predetermined value, the connection between the wire and the saddle will be incomplete, and if the heating time is longer than the predetermined time, not only will the melting area expand, but the amount of melting will increase. If the time is too large or the predetermined time is shorter than the predetermined time, a sufficient amount of melting cannot be obtained and welding becomes impossible. In practice, the management of heating and crimping times relies on the primitive method of calling using a stopwatch, so it is possible for the operator to use a stopwatch to tip his head and cause the heating time to exceed the predetermined value. In addition, the need for a separate worker dedicated to time management is an unavoidable problem in terms of labor saving and automation.

An object of the present invention is to mechanically incorporate a locking mechanism that automatically controls heating work and crimping work, and to automatically control the locking mechanism on and off in conjunction with pressurized melting work and crimping work for a predetermined period of time. By not allowing subsequent work to be carried out until after the specified time has elapsed, or after a predetermined time has elapsed, it is possible to prevent work errors due to worker skill or carelessness, thereby increasing the quality of the product. The goal is to improve the water retention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a saddle landing machine equipped with a locking mechanism according to the present invention will be described in detail with reference to the accompanying drawings.

First of all, with reference to FIGS. 1 to 5, the present invention' will be described with reference to FIGS. The overall configuration of the saddle fusion machine used in conjunction with the present invention will be explained.

The saddle fusion splicer basically consists of a saddle holder part 50 and a saddle holder part 10. - The crank part 10 of the Guib has a movable clamp 1.1 and a runde 13, which are substantially divided into two by the furrow surface H, defined as a movable clamp 1.1 and 161. Fixed clamp 13 supports 1M15? It is useful for horizontally placing the saddle fusion machine, for example, on the bottom surface G of an excavated hole, together with the support legs 57 of the saddle holder part 50, which will be described later. On the other hand, the movable clamp 11 also has a spare support 11ql17.
are provided and serve as support legs when the fusion splicer is used vertically.

The fixed and movable clamps 13.11 extend in the axial direction of Noya fP(1) and A11II%!・Hold half of the outer circumference of the arm ide P over the length of the arm. The fixed clamp 13 and the movable clamp fil have fork part shrines 25 formed at both upper ends thereof.
At 27, for example, a round or square rod-shaped tightening member 19
connected to each other. The tip of the tightening part @19 is screw a1
9A, and a screw hole clamp 21 is screwed onto this threaded rod 19A. The tip of the square rod 19 is rotatably supported by a pivot 29 attached to a hinge member 27 of the flexible clamp ti. Thus the clan
When the knob 21 is rotated, the fixed clamp 13 and the movable clamp 11 are brought close to each other and moved away from each other. A flap arm 35 is pivotally attached to both lower parts of the movable clamp 11 via a pivot pin 33. be done. On the other hand, at both ends of the corresponding lower part of the fixed clamp 13, there is a hook 1lli35 and a hook 35A.
A pin 37 that engages with is fixedly provided.

An operating lever 43 is attached to the other end of the lever 35. The operating rod 43 is supported so as to be movable up and down within the support portion 12 formed integrally with the movable clamp II.

Between the tightening members 19 of the identification clamp 13 is a clamp f for repairing the bend υ of p4ideP, which can be tightened by a feed screw type knob 48.
30 is provided, but the explanation is omitted because it is not related to this JS draft.

A protrusion 42 for attaching a heater 100, which will be described later, is planted on a support 44 provided with a movable clamp 11K.

A pair of parallel guide rods 51 extending at an angle with the axis of the arm and arm are identified in the fixed clamp 13 of the clamp portion 1O, and the saddle holder portion 50 is attached to a slide roller (main body) that is slidably attached to the guide rods 51. ) 53, it is possible to approach and move away from the clamp portion lO. Slide 53Fi has a V-shaped arm 55 extending diagonally upward,
A protrusion 59 for the heater 100 is implanted at the tip of the arm 55. The protrusions 59 are fitted horizontally and linearly with the corresponding protrusions 42 of the clamp portion IO, and the heater 100 can be suspended and held in a predetermined position by these protrusions 19 when melting is applied. Further, the end of the guide rod 51 is supported by a support leg 57.

Support 1144I57 is /f support F of idekrande part 10
This serves as a stand when the fusion splicer is placed horizontally (Fig. 1) together with the IQ15. Slide Zoro.

A hollow housing part 61 is integrally formed in the hole 53, and a hollow circle fitted in the horizontal hole 63 is provided in the hollow housing part 61. 1I65 A pair of sliders 71 are slidably inserted. Slider 71 is a hollow circle flf65
It has a positioning pin 67 that can freely protrude and retract from the outside.
The pin 67 can fit into a corresponding positioning hole 60 formed in the guide rod 51 as shown at position 67'. Both sliders 71 are in a contact position NK where they are constantly pressed against each other by a spring 73, and the pin 67 is sunk into the hollow cylinder 65.

Both sliders 71 have inclined surfaces 71A, and an eccentric cam 75 is disposed between these inclined surfaces. The cam 75 is fixed to a cam shaft 79 that is rotatably supported by the hollow housing portion 61, and is rotatable together with the cam shaft 79. Both ends of the camshaft 79 project outward from the hollow housing portion 61, and U-shaped operation levers 81 are fixed to both ends of these projections. Operation lever 8
A handle 83 is attached to the handle 1. Hold the handle 83 and
As shown in the figure, by operating the cam 75 from the horizontal position to the upright position shown at 83' and rotating the cam 75 by 90 degrees, the cam 75 is moved to the fifth position.
Turn 90 degrees one river to about 75' w as shown in the figure.

When the cam 75 is at the 75' position K, the slider 71#i is pushed outward against the spring 73 by the wedge action of its inclined surface 71A, and the pin 67 engages in the hole 60 of the guide rod 51. Both sliders 71 are pushed out and the rust at the 9th position is 71' (
Figure 4). As a result, the saddle holder portion 50 is positioned in the axial direction of the guide rod 51.

The slider 53 has a shaft hole 181 extending parallel to both guide rods 511, but has a slot 18.2, into which the press rod 85 can freely slide via a metal sleeve 183. Nij! Can be attached. suppression mouth, do 8
A plate 89 is fixed to one end of the slider 5 by gel 871C, and is pressed against both sliders 71 via the plate 89. - Space portion 182Kt: i slider tube 91 is slidably attached. The slider flI91 is fixed to the saddle holder clamp 195 by a delt 93.
'ft and attached to the saddle holder 198 within the saddle holder clamp 195. eIdePt1ll+Saddle S of a predetermined shape to be attached is lowered and held.

The saddle S and saddle holder clamp are secured within the holder by knobbed 8 identification screws 199 and 197, respectively.

In addition, in FIG. 4, the fixing screw 197° 199Fi is shown rotated by 90° with respect to FIG.

Is holder clamp 195 in the center? ? A spring 78 and a spring taker 76 are arranged within this gauge 74. The other end of the spring 78 is pressed against a pressing port 85.

The initial NjR of the spring 78 is the adjustment screw t attached to the stopper 4.
The acid 11M1 is adjusted by 12. An inner cylinder 68 is slidably fitted into the Merida cylinder 91, and its protrusion 68A is a pressing opening, and a pressing opening that engages with a projection 85A of the do 85;
The door 85 is prevented from coming out from the inner cylinder 68. The inner cylinder 68 is screwed into the actuator and a+ =-(l (
% f-angle and the operating ray? -〇6tj varnish slider tube 9
If the abbreviated long hole 64 (Fig. 82) formed in
and protrude to the outside. Long hole 64# Yoshi/9-66 mouth,
It has a portion 64A that defines the position of the p4-6 and a long hole portion 64fl that enables the operation of
4B extends in the axial direction of the pressing rod 85, and allows the inner cylinder 68 to move in the axial direction of the pressing rod 85 within the slide/sheath 91 by the lever 66. Replace the operating spring 78t of the inner cylinder 68 (the strength of the spring 760, that is, the pushing force of the saddle S against the 9th position P varies depending on the 9th position P, so when it exceeds the fine adjustment range using the readout screw 112) Although this is necessary when the spring 76 needs to be replaced, its explanation will be omitted since it is not directly related to the present invention.

As described above, when the cam 75 is rotated, the slider 71 is gradually pushed outward and the positioning pin 67 is fitted into the corresponding positioning hole 60 of the guide rod 51. After that, the cam 75 is further rotated. As this continues, the cam 75 begins to push the plate 89 to the left in FIG. 4-5.

As a result, the pressing rod 85 is pushed to the left, compressing the spring 78 and increasing the compressive load (at this time, the holder clamp f1
95 does not move because it is pressed against the middle eve P, 15 or the heater 100 via the saddle S).

・Fusing the saddle to the saddle is done as follows.

・Attach the arm P to the Dai De Krande part lO (the installation work is directly related to the present invention, so the explanation is omitted), and then attach the saddle S to the arm PKk'A @17 Melt the welded surfaces of both K There is a need to. Therefore, a concave 11101 corresponding to the outer periphery of 9 ide P and a convex surface 102 corresponding to the concave surface S/ of the saddle S (which has a shape corresponding to the outer periphery of 9 ide P)
Heater Zoroku 100 with p'? It is hung so as to bridge the protrusion 42 of the ideal part lO and the protrusion 59 of the saddle holder part 50 (the length *tOa to which the protrusion 42.59 fits is formed in the heater pro and ioo)
. At this time, the saddle holder part 50 is surrounded by a heater holder 100 inserted between it and the heater clamp part 10.
keep it close to the tube clamp section 10. Moreover, the saddle S is already attached to the saddle holder 95. Next, the slider block 53 is slid toward the 9412271 part 10 and brought into contact with the heater block 100f:/4ide P and the saddle S. Then press the handle 83/4-
81, the positioning pin 67 is inserted into the corresponding positioning hole 60 of guide #I51, and the saddle holder part 50 is inserted.
The slide lock 53 is slid into a predetermined position.

Furthermore, move the lever 81 (handle 83) to 141' (83) in FIG.
') If you pull it up to the saddle holder 95 position, as described above,
A predetermined pressing force is doubled via a spring 78.

As a result, Heater Pro, Ri 100 has pipe P and saddle S.
Heater Zorro because it is pressed strongly against.

LOOK: The joint surface of the arm ide P and the saddle S can be melted under pressure. When the heating for the predetermined time t1 is completed, remove the heater pro 100. Return the lever 81 of the saddle holder part 50 to the horizontal position (initial position) again and release the lock by the positioning pin 67. It is only necessary to move the /4 tube in the direction away from the clamp section 10.

This heater removal work needs to be done quickly.

This is because the welded surfaces of the saddle and the saddle, which have been melted under pressure, cool rapidly.

After removing the heater block 100, move the slider 53 of the saddle holder part 50 along the guide rod 51 again.
9412271 Part 10 Close Saddle S/Ya Eve PK
bring into contact. Then, by pulling up the /9-81 again to the upright position, the saddle S is pressed against the ideal P with the required force. If the time from when the heater is removed to when the saddle starts to press 1 to 4 fP is t, then tl is at least 3.
It is desirable that the time is within 5 seconds. The pressurized melting time tl mentioned above varies depending on the nominal diameter of the saddle and the nominal diameter of the saddle, but is generally t1 = 50 to 60 seconds.

After crimping for a predetermined time ts (ts is generally 60 to 90 seconds), the z4-81 is returned to the initial position and the pressing force is released. Eventually, as the joint surface cools down (cools down), the saddle S...
It is completely fused to the arm fP.

Conventionally, in the saddle fusion machine as described above (the above structure itself has already been applied for by the applicant), it has been necessary to remove the heater, for example. It takes more time than making a paper.1. If the saddle is crimped after the second time has elapsed, or due to operator's carelessness or inexperience, t1
There was a problem in that the heater was removed before the second time elapsed, and the saddle was accidentally washed away without sufficient pressurized melting. All of these things degrade the quality of the product and essentially necessitate redoing the FJil 1st work.

In order to solve this problem, the present invention is characterized by providing a locking mechanism that prevents the next operation from being performed until or after a predetermined period of time has elapsed. To achieve this purpose, according to the present invention, a closing mechanism is provided, for example, to stop the operation of the operating lever 81.

The opening mechanism 130 includes, for example, a solenoid switch 132 fixedly installed on the hollow housing 61 of the saddle holder part 50.
It consists of A pair of plates 133 are fixed to the plunger 131 of the solenoid switch 132, and a pair of link arms 135 are pivotally connected between the plates 133. At the other end of each link arm 135, a cup pin 13 is fitted and supported so as to be slidable in a direction parallel to the axis of the arm ide P by a guide block 137 fixed to the hollow housing 61.
9 is pivoted. As a result, the solenoid switch 132 of the Kubin 139 is energized and the plunger 131 is
In the figure, if they are pushed downward, they are pushed outward in the horizontal direction.

When the solenoid switch 132 is in the off state, it is in a retracted position within the respective guide block 137 and does not interfere with the operation of the operating lever 81, but when the solenoid switch 132 is in the on state, the solenoid switch 139 is in the m2 position. It protrudes outward as shown at 139' in the figure.
The rotational movement of zl-81 cannot be performed.

As is clear from FIG. 1, even if the pin 139 is in the lock position (extended position 1 m), the operating lever 81 straddles 81'.
(Fig. 1) is obtained in the counterclockwise direction or in the same direction as #-jvP until the position where it contacts the mouth and the cup pin 139, but in this contact position, if you change the position and raise t4-81 to the 81' position In case of 67U corresponding positioning hole 60Ki, do not insert it, make reverse KiIIk and set tl-81' to 81st position IjI.
The position of the lock pin 139 is taken into consideration so that the pin 6 is not completely removed from the positioning hole 60 when the pin 6 is pushed down to t.

A control signal S for turning on and off the solenoid switch 132 is given by a microswitch 140 provided at the bottom of the hollow pQ housing 61, for example. The cam 75 is linked to the movement of the micro switch 140 and the cam 75.
is turned on when it is knocked down at about 75' tmt as shown in Figure 5. The on signal from the microswitch 140 is connected to the lead 14.
1t- to the control 150, thereby energizing the solenoid switch.

The opening mechanism 130 can also be fixed to the bottom side of the hollow nousing 61 in a manner symmetrical to the arrangement shown in FIG. Also, a micro switch! 40 is not limited to the position shown in the illustrated embodiment as long as the position of the cam 75 can be detected. Furthermore, the microswitch 140 is connected to the cam 7.
Instead of detecting the movement of lock 14, it may be possible to detect the movement of parts such as slide block 53 that are always activated during heating and crimping work. Next, regarding the operation of lock 14, 130. Explain (Part 7
．． (See Figure 8).

FIG. 7 shows an example of the control box 150. First, a timer with a digital display is shown.
From 1T44C, the pressure melting time is t1, the heater removal time is 1, and the crimping time is 1. and set the cooling time t4. The cooling time t4 may be, for example, 180 seconds or more. In the illustrated embodiment, the selector switch 153 selects 2f! according to the diameter of the saddle and the diameter of the saddle. ! Time setting (tl = 50
or 60 (seconds), ts = 60 or 90 (seconds) or more), but it is not necessarily necessary to do so. Note that 151 is an electric switch.

After setting the heater pro 100 in the predetermined position, slide the slider block 53 toward the /4 IDECRANE part 1O, and then remove the heater pro 1001's mother ID P and saddle S.
When the handle 83KI relay p4-gl is pulled out, the positioning pin 67 is inserted into the corresponding positioning hole 60 of the guide rod 51, and the slide 53 of the saddle holder part 50 is placed in the predetermined position. It will be done. Furthermore lever 8
1 (handle 83) to the position 81'(83') in FIG. 1, a predetermined pressing force is applied to the saddle holder 95 via the spring 78 as described above. At this time, the microswitch M8Wl 40 is turned on by the cam 75, and as a result, the opening mechanism 130 is operated, and the lock pin 139 protrudes to the opening position full17c. At the same time, timer TI operates and the set time is 1. Lock Bin 139 until
The zero position is maintained.

Therefore, if the operator accidentally returns the lever 81 to the horizontal position in order to stop the pressurized melting before the time t1 seconds elapses, the lever 81 cannot be returned to the horizontal position by the pin 139. At the same time as the predetermined pressurized melting time t1 has elapsed, the solenoid switch 132 is turned off and the locking mechanism is released. As a result, the operator can return the lever 81' to the horizontal position [81-1 (see Fig. 8)] at any time.
.

Therefore, in order to remove the heater 10G, place the saddle holder part 50 and place p4-81 in the horizontal position (initial position).
It is only necessary to release the opening by the positioning pin 67 and move the slider 53 of the saddle holder part 50 in the direction away from the pipe clamp part IO. Lever-81″
At the same time as returning to the horizontal position 16, the microswitch MSW is turned off and the timer T is activated.

Heater Pro 100f: Once removed, the slider 53 of the saddle holder part 50 is brought close to the 14' Eve clamp part 10 along the guide rod 51 and brought into contact with the saddles B@ and qide P. Then, when t4-81 is pulled up again to the upright position, the saddle Sti/#ide PK is pressed with the required force. At this time, the microswitch 140 is turned on again by the cam 75, and the lock pin 139 projects to the open position. At the same time, a timer Ts is started and counts 1° of crimping time. Therefore, the predetermined time 1. Since the crimping is not released until the crimping time is completed, the operator's carelessness will not allow the wire 4-81 to return to the horizontal position before the crimping time is completed. As soon as 13 hours have passed, the mouth and mouth will be released.
/# - It is possible to return f31 to the horizontal position and release the pressing force. Simultaneously with this release, the timer T4 counts the start and cooling (cooling) time t4. The timer T4FiJl simply tells the operator whether or not a predetermined cooling time has elapsed (thereby, for example, move the saddle to another location).

On the other hand, if it takes a long time to remove the heater saddle after returning the lever 81 to the horizontal position after completion of pressurized melting, and more than t1 hours elapse before the saddle is crimped to the heater melting hole, Kt-j The signal is sent to the solenoid switch, which automatically activates the opening mechanism. Follow it/
-81 can no longer be raised to 81' tit and therefore the saddle cannot be crimped to the heater. In this way, if more than t snow time has elapsed, the product can be rejected as a defective product or the product can be heated and melted again. In that case (if 11 hours have passed)
It is preferable to use a buzzer or lamp to notify the operator.

Thus, according to the present invention, it is possible to control the pressurizing time and the crimping time.
This can be carried out accurately by the opening and closing mechanisms that are linked to the pressurizing work and the crimping work, respectively, and it is possible to solve the problems mentioned at the beginning due to the operator's carelessness or erroneous sensitivity.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the overall configuration of the saddle fusion machine according to the present invention, Figs. 1 and 2 are plan views of Fig. 1, Fig. 3 is a right side view of Fig. 1, and Fig. 4 is a fg IV-IV line sectional view in Figure 1,
・Figure 5 is a sectional view taken along the line v-■ in Figure 4, Figure 6 is a right side view showing the main parts of the locking mechanism according to the present invention, and Figure 7 is #g.
The control shown in Figure 5? FIGS. 8(A) and 8(B) are flowcharts of the operation of the saddle fusion machine according to the present invention. 1O...Mother ideal part, 11...Movable clamp part, 13...Fixed clamp part, 75...Cam, 8
1... Operation lever, 130... Mouth, ri mechanism, 13
2...Solenoid switch, 139...mouth, cupin, 140...micro switch. Figure 191-3 (B)

Claims (1)

[Claims] 19 Clamp the id to the motherboard crank part and the holder part, which holds the saddle to be fused to the side wall of this id and is equipped with a dollar holder, along a pair of parallel guide rods extending between them. The fused surfaces of the arm ide and the saddle are heated for a predetermined period of time (ts
) After melting under pressure, remove the heater within a predetermined time (tl).
l) From crimping / In the saddle fusion machine that fuses the saddle to the saddle, the holder part is engaged with the rod member that presses the saddle holder via the d-ring, and the core ro and d members. A booster mechanism having a cam that applies a pressing force to the rod member and an externally extending operating lever that rotates the cam, and a booster mechanism that operates only at predetermined times corresponding to the various predetermined times described above to operate I9-. Close your mouth, 411!
A saddle fusion machine characterized by comprising a structure.