JP5869014B2 - Liquid injection device - Google Patents

Description

  The present invention relates to a liquid injection device provided at the tip of a robot, an automatic machine, a hand crane, or the like.

  Conventionally, liquids such as brake oil, clutch operating oil, power steering oil, coolant, and window washer fluid related to the engine and steering of the vehicle are stored in respective tanks provided in the vehicle body. In order to inject each liquid into each tank, the liquid is automatically injected through a liquid injection hole provided in the tank.

  In addition, in order to cope with an increase in the production line speed accompanying an increase in the number of production units, injection of each liquid or the same liquid into the same tank or different tanks simultaneously using a plurality of liquid injection holes is also performed. ing.

  For example, in Patent Document 1, a liquid injector that supports a plurality of injection guns via a single floating mechanism that allows movement in the horizontal direction is used to provide an injection port for vehicle power steering oil, coolant liquid, and the like. A configuration is disclosed in which the plurality of injection guns are brought into close contact to inject power steering oil, coolant liquid, or the like.

  In Patent Document 2, one robot is made to hold two injection guns, and one injection gun is inserted and set facing one liquid injection hole using a visual sensor. A configuration is disclosed in which the robot is separated from the robot, and then the other injection gun is inserted and set to face the other liquid injection hole using a visual sensor, and each liquid is injected from each liquid injection hole through each liquid injection hole. .

  In Patent Document 3, when the opening of the liquid injection gun comes into contact with the liquid supply port, the suspension member pushes up the piston against the coil spring force, and the neck of the suspension member is positioned in the hole of the cylinder. The gun can float in the horizontal direction relative to the cylinder and in the vertical direction perpendicular to the horizontal direction, and the liquid injection gun is supplied with liquid when the core is misaligned between the liquid supply port and the liquid injection gun. It is disclosed that the center is floated to absorb misalignment.

  Patent Document 4 discloses a centering mechanism for a clamp body of a liquid injection gun in a liquid injection gun gripping device using a robot arm.

JP 2000-177798 A JP-A-7-17600 No. 7-38231 JP 7-276280 A

  In the configuration disclosed in Patent Document 1, it is difficult to individually absorb the displacement around the front and rear, left and right, top and bottom, pitch axis, and roll axis due to manufacturing errors and assembly errors of each injection hole. Injecting a predetermined amount of liquid from the injection gun into the injection part by the operation of the liquid pump, and then reducing the pressure to the predetermined part in the injection part by the operation of the vacuum pump after that cannot be surely brought into close contact with each injection hole Cannot be performed reliably. In addition, there is a problem that the liquid leaks around the injection hole.

  According to Patent Document 2, the problem included in Patent Document 1 can be solved to some extent. However, it cannot follow the increase in production line speed.

  Patent Documents 3 and 4 can cope with minute displacements around the front, back, left, right, top, bottom, pitch axis, and roll axis of a single liquid injection hole. In order to make the liquid tight contact, it is necessary to cope with a large displacement that is the sum of the individual displacements of the plurality of liquid injection holes, and thus cannot be handled by the above configuration.

  In addition, Patent Documents 3 and 4 both create a floating state using the vertical movement of the piston in the cylinder, but since a force acting eccentrically with respect to the axis acts on the piston, the peripheral surface of Pinton or There is a problem in that the inner surface of the cylinder is heavily worn and the piston malfunctions due to friction or air leakage caused by this.

The present invention to solve the above problems, there is provided a liquid injection device for injecting a liquid into at least two injection holes adjacent, the liquid injection apparatus, two spindle against the lifting arm is individually resilient mechanism Via a swivel mechanism which can be moved up and down in the vertical direction and slidable in the horizontal direction through a sliding mechanism, and can be rotated around the horizontal and vertical axes at the lower end of each of the two main shafts. An injection gun is supported, and the swivel mechanism includes a spherical member attached to the main shaft and a housing for holding the spherical member, and a plurality of bolts and a periphery thereof are provided between the housing and an annular member attached to the main shaft. A spring member to be disposed is interposed, and only one of the plurality of bolts is inserted into a cylindrical member provided in the housing, and the other bolts remain in the spring member. It is.

The liquid injection device according to the present invention can reliably inject a predetermined amount of liquid into the tank even when the line speed of the production line is increased.

Front view of the liquid injection apparatus of the present invention Side view of the liquid injection device of the present invention Plan view of the liquid injection apparatus of the present invention AA sectional view of FIG. BB sectional view of FIG. PP view of FIG. Plan view of FIG. Sectional view of FIG. Fig. 8 is an enlarged view of the main part. Fig. 8 is an enlarged view of the main part. Enlarged view of the main part of FIG. EE view of FIG. FF view of FIG. GG view of FIG. HH view of FIG. K view of FIG. Side view of FIG. Plan view of FIG. MM view of FIG. N part enlarged view of FIG. Plan view of FIG. The front view of the process which has arranged the clutch operation oil injection device of the present invention. The side view of the process which has arranged the clutch operation oil injection device of the present invention

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The liquid injection device 200 according to the present invention is attached to the tip of a robot arm 100 as shown in FIGS. 22 and 23, for example.

  The tip of the robot arm 100 is fastened to the fastening plate 1 of the clutch operating oil injection device 200 via the resilient mechanism 20 as shown in FIG. 8, and the fastening plate 1 has a U-shaped base as shown in FIG. The plate 2 is fastened by bolts 4 via fastening rods 3 at its four corners.

  As shown in FIG. 19, the elastic mechanism 20 includes a bottomed cylindrical member 21 disposed on the base end side 100 a of the robot arm and a bottom portion (ceiling portion) fastened to the bottomed cylindrical member 21. A bottomed cylindrical member 22, a hole 23 opened coaxially with the base end side 100 a of the arm in the bottomed cylindrical member 22, and an opening 25 opened coaxially from the bottom 24, and the bottom 24 A conical hole 26 concentrically and coaxially formed with the opening 25, a support rod 27 extending from the bottom 24 through the opening 25, and a base end side of the support rod 27 An annular plate 28 disposed on the bottom, a compression spring 29 disposed between the annular plate 28 and the bottom surface of the hole 23, and the same diameter as the small-diameter cylindrical portion 30 of the bottomed stepped cylindrical member 22. The base end surface 32 on which the protruding portion 31 is formed.

  Further, the protruding portion 31 has a hole portion 35 formed with a concave surface portion 34 slidably contacting a spherical surface portion 33 formed at the tip of the support rod 27, and the shaft center of the support rod 27. An arm distal end side 100b having a conical pin body 36 with a distal end implanted at a location corresponding to four concentric equally-divided locations formed on the bottom 24 of the bottomed stepped cylindrical member 22 around The small-diameter cylindrical portion 30 of the bottomed stepped cylindrical member 22 and the protrusion of the arm distal end side 100b between the stepped portion 22a of the bottomed stepped cylindrical member 22 and the proximal end surface 32 of the peripheral edge of the protruding portion of the arm distal end side 100b. It is comprised from the compression spring 37 arrange | positioned so that the part 31 may be inserted.

  The conical pin body 36 is normally in a state where its tip is slightly inserted into the conical hole 26. This prevents displacement of the proximal end side 100a and the distal end side 100b of the arm about the yaw axis.

  A first plate 5 is screwed onto the base plate 2. As shown in FIGS. 6 and 7, two pairs of first linear guide rails 6 are laid on the first plate 5 in parallel in the vertical direction on the paper surface. A pair of first linear guides 7 is slidably engaged with each pair of first linear guide rails 6. An independent second plate 8 is fastened on each pair of first linear guides 7.

  A substantially U-shaped second plate stopper plate 40 shown in FIGS. 2 and 16 to 18 is screwed by bolts 41 on both sides of the first plate 5 where the first linear guide rail 6 is laid. ing. A pair of stopper bolts 43 are screwed to the standing portion 42 of the second plate stopper plate 40, thereby limiting the amount of movement of each second plate 8 on the first linear guide rail 6. .

  As shown in FIGS. 6 and 7, between the pair of first linear guide rails 6 on the first plate 5, the first linear guide rails 6 are equidistant from the first linear guide rails 6. Four bolts 150a and 150b, in which pin bodies 151 are implanted, are screwed on both sides. A hole 152 is formed in the pin body 151.

  Further, on the back surfaces of the pair of second plates 8, two bolts 150a, 150a and 150b, which are equidistant to the first linear guide rail 6 and parallel to the front first linear guide rail 6, Bolts 154a and 154b in which a pin body 153 is planted at the same position from each bolt 150a and 150b are planted between 150b. A hole 155 is formed in the pin body 153.

  The engaging portions 157 of the spring body 156 having the same tension are engaged with the holes 152 and 155 of the bolts 150a and 150a and 154a and 154a and the holes 152 and 155 of the bolts 150b, 150b and 154b and 154b. Thereby, each 2nd plate 8 is elastically hold | maintained in the center position of the length direction of the 1st linear guide rail 6. FIG.

  A pair of second linear guide rails 9 is laid on each second plate 8 so as to be orthogonal to the first linear guide rails 6 on the left and right in the drawing. A pair of second linear guides 10 is slidably engaged with each pair of second linear guide rails 9.

  A third plate 11 is disposed perpendicular to the second linear guide rail 9 between the upper surfaces of each pair of second linear guides 10.

  A substantially L-shaped third plate stopper plate 50 shown in FIGS. 1 to 3 is screwed by bolts 51 on both sides of the second plate 8 where the second linear guide rail 9 is laid. A pair of stopper bolts 53 are screwed to the standing portion 52 of the third plate stopper plate 50, thereby limiting the amount of movement of the third plate 11 on the second linear guide rail 9.

  6 and 7, between the pair of second linear guide rails 9 on the second plate 8, the same positions from the second linear guide rails 9 and both sides of the second linear guide rails 9. Four bolts 160a and 160a having a pin body 161 implanted therein are screwed. A hole 162 is formed in the pin body 161.

  Further, the back surfaces of the pair of third plates 11 are between two bolts 160 a and 160 a that are equidistant to the second linear guide rail 9 and parallel to the front second linear guide rail 9. Bolts 164a and 164a in which pin bodies 163 are implanted at equal positions from the respective bolts 160a and 160a.

  A hole 165 is formed in the pin body 163. A spring body 166 having the same tension is engaged between the holes 162 and 165 of the bolts 160a and 160a and the bolts 164a and 164a. Although not shown, the same structure as the structure in which the spring body 166 is stretched between the holes 162 and 165 of the bolts 160a and 160a and the bolts 164a and 164a is arranged in parallel to the overlapping position in FIG. Thereby, each 3rd plate 11 is elastically hold | maintained in the center position of the length direction of the 2nd linear guide rail 9. As shown in FIG. Further, a fourth plate 12 having the same width and the same length as the third plate 11 is laminated on the third plate 11.

  And as shown in FIGS. 5-7, the main axis | shaft 60 is penetrated by the intermediate position of each said 1st pair of 2nd linear guide rail 9 of each 3rd plate 11. As shown in FIG. As shown in FIGS. 1 and 2, the tip end of the main shaft 60 is inserted through the fourth plate 12 and screwed with a nut 61.

  Further, as shown in FIG. 8, the distal end surface of the main shaft 60 is in pressure contact with the distal end of a locking screw 13 screwed into the fourth plate 12. Each main shaft 60 is inserted through the second plate 8, the first plate 5, and the base plate 2, and a large diameter portion 60 a is formed below the base plate 2. An annular member 62 is fastened to the large diameter portion 60a. A spherical member 71 constituting a swivel mechanism 70 capable of rotating at low speed or swinging is fastened to a base end portion below the annular member 62 of the main shaft 60.

  As shown in FIGS. 13 to 15, the swivel mechanism 70 is a concave seat 75 fitted between the upper and lower housings 72, 73 by fastening the cylindrical upper housing 72 and lower housing 73 with bolts 74 at four equal positions. And a spherical member 71 fastened to a main shaft 60 inserted through the holes 72a and 73a of the upper and lower housings 72 and 73. As a result, the housing 76 having the concave seat 75 is rotatable in all directions. The upper surface of a support plate 91 having a cylindrical injection gun 90 attached to the lower surface thereof is fastened to the housing 76 by bolts 77 at four equal positions.

  As shown in FIGS. 2 and 8, bolts 78 are screwed into four equal positions on the upper surface of the annular member 62, and holes 62a are formed on the lower surface of the annular member 62 to which the bolts 78 are screwed. Is formed. Further, the upper housing 72 is provided with stepped holes 79 at four locations corresponding to the bolts 78, the base end having a diameter corresponding to the hole 62a and the tip having a smaller diameter. Further, a stepped cylindrical member 80 having a large diameter portion and a small diameter portion is brought into contact with the stepped portion of the stepped hole in the stepped hole 79, and the large diameter portion is directed to the annular member 62. Has been inserted. A spring member 81 is inserted between the hole 62 a of the annular member 62 and the large diameter portion of the stepped cylindrical member 80 inserted through the stepped hole 79 of the upper housing 72.

  Further, as shown in FIG. 9, a pin portion 78b extending at the tip of one bolt 78a of the bolts 78 screwed into the four places is inserted through the spring member 81 to enter the stepped hole 79. As shown in FIG. 10, pin portions 78d that are inserted into the holes 80a of the stepped cylindrical member 80 disposed at the ends and extend to the tips of the other three bolts 78c are formed in the stepped holes 79 as shown in FIG. It is formed in such a length that it can be inserted into the spring member 81 without being inserted into the spring member 81.

  With the above-described configuration, the rotation around the pitch axis and the roll axis on the concave seat 75 side supporting the injection gun 90 via the support plate 91 of the swivel mechanism 70 is permitted, and the rotation around the yaw axis is restricted. The verticality on the concave seat 75 side is maintained.

  As shown in FIG. 8, on the non-opposite side of the support plate 91, a diagram is provided on the support plate 91 in each of the clutch operating oil injection passages 90b established on the axis of the cylindrical injection gun 90. A vacuum path 93, a clutch operating oil supply path 94, and a clutch operating oil discharge path 95 communicating with each other via the switching valve 92 shown in FIG.

  Joints 93a, 94a, 95a for connecting to hoses (not shown) are connected to the vacuum path 93, the clutch operating oil supply path 94, and the clutch operating oil discharge path 95. A flange 93b is erected at the upper portion of the joint 93a connected to the vacuum path 93 disposed at the center, and a pin body 96a is extended at the tip of the flange 93b as shown in FIG. Bolt 96 is screwed.

  The pin body 96a is provided with a hole 96b for connecting a spring body 123 described later. Further, a substantially L-shaped support plate 98 is provided on the upper surface of the support plate 91 in FIG. 1 on the front and rear sides of the drawing, and a plurality of screw holes 99 are formed on the upright surface 98a of the support plate 98 at equal intervals. It is screwed. As shown in FIG. 11, a bolt 110 having a pin body 110a extending at the tip is screwed into an appropriate one screw hole 99a of the plurality of screw holes 99. Similarly, a hole 110b for connecting the spring body 126 is formed in the pin body 110a.

  On the upper surface of the base plate 2, a frame body 120 having a substantially mouth shape in plan view in FIG. As shown in FIG. 1, support stays 121 are arranged on both sides of the support plate 91 of the frame body 120 where the joints 93 a, 94 a, 95 a extend, and bolts 122 are screwed on the support stays 121. A hole 122b for connecting a spring body 123, which will be described later, is formed in the pin body 122a that is attached and extends at the tip of the bolt 122.

  Further, as shown in FIG. 2, a pair of support plates 124 are screwed to both standing portions 2 a of the base plate 2, and bolts 125 are screwed to the support plates 124. A hole 125b for connecting a spring body 126 described later is formed in the pin body 125a extending at the tip.

  And it was screwed by the joint 93a connected to the hole 122b opened in the pin body 122a extended from the volt | bolt 122 screwed to the support stay 121 of the said frame 120, and the vacuum path | route 93 of the said support plate 91. An end portion of the spring body 123 is engaged with a hole 96b formed in a pin body 96a extending from the bolt 96.

  Also, a substantially L-shaped support provided in the support plate 91 and a hole 125b formed in a pin body 125a extended from a bolt 125 screwed to a support plate 124 screwed to the base plate 2. Both ends of the spring body 126 are engaged with a hole 110b formed in a pin body 110a extended from a bolt 110 screwed to the plate 98.

  As described above, the support plates 91 are elastically supported by the base plate 2 on the three sides excluding the sides facing each other. With the above configuration, external force acting on each support plate 91 by a hose (not shown) connected via the joints 93a, 94a, 95a connected to the vacuum path 93, the clutch operating oil supply path 94, and the clutch operating oil discharge path 95 is provided. It cancels and each support plate 91 is stably held in a horizontal state. That is, the axis of the injection gun 90 is stably held vertically.

  A plurality of screw holes 99 are screwed into a standing surface 98a of a substantially L-shaped support plate 98 disposed on the upper surface of the support plate 91, and the bolt 110 is selectively inserted into one appropriate screw hole 99a. The structure for screwing is a structure for responding to an external force acting on each support plate 91 that varies depending on the type of hose.

  As shown in FIG. 8, clamp members 130 having engagement claws 137 at the distal ends thereof are pivotally supported at the proximal end sides thereof at four positions on the peripheral surface of the distal end of the injection gun 90. A protrusion 131 is formed at the end.

  An annular cylinder chamber 133 is formed at the center of the injection gun 90 between the housing 90 a and the intermediate member 132, and an annular piston 134 is disposed in the cylinder chamber 133. A cylindrical portion 135 extends downward from the periphery, and an engaging claw 136 that engages with the protrusion 131 of the clamp member 130 is formed on the inner periphery of the tip of the cylindrical portion 135.

  The cylinder chamber 133 is connected with a lowering air supply / discharge passage 138 and an ascending air supply passage 139 established in the injection gun 90, whereby the engagement of the clamp member 130 is achieved as shown in FIGS. The pawl 137 can be engaged with and disengaged from an engagement flange portion W3 formed on the front end peripheral surface of the clutch operating oil injection port W2 of the transmission W.

  When the engaging claw 137 and the engaging flange W3 are engaged, as shown in FIG. 8, the injection gun 90 and the clutch operating oil injection port W2 are sealed by the seal ring 90d and the packing 90e disposed at the tip of the injection gun 90. The liquid tightness between them is maintained.

  As shown in FIGS. 22 and 23, when the transmission W assembled based on such a configuration is positioned and placed on the transport carriage D and arrives at the clutch oil supply process by the transport conveyor C / V, the transport carriage D is positioned and stopped by a stopper (not shown).

  Next, the robot is operated, and the opening 90c of the clutch operating oil injection path 90b of the injection gun 90 attached to the clutch operating oil injection device 200 attached to the tip of the robot arm 100 by the operation taught in advance is used as the clutch oil injection port W2. The tip of the injection gun 90 is inserted into the clutch oil injection port W2.

  At this time, since the clutch operating oil injection portion W1 in which the clutch operating oil injection port W2 of the transmission (transmission) W is opened is formed of resin, there is a molding error. Specifically, it is an error in the horizontal direction, vertical direction, pitch direction, and roll direction.

  In the case of a dual clutch transmission in which two sets of clutches and gears are held, one gear set is responsible for odd gears and the other gear set is responsible for even gears, two clutch operating oil injection parts W1 are close to each clutch. Since the clutch operating oil inlet W2 is also opened in close proximity to each other, the position error of the clutch operating oil inlet W2 on the transmission W is maximum in the horizontal, vertical, pitch and roll directions. Doubles.

  However, according to the clutch operating oil injection device 200 of the present invention, the horizontal and vertical errors of the clutch operating oil injection port W2 are caused by the third plate 11 to which the main shaft for coaxially supporting each injection gun is attached. Since the fourth plate 12 is slidable along the first linear guide rail 6 and the second linear guide rail 9, it is absorbed respectively.

  Further, the errors in the pitch direction and the roll direction are absorbed by the pressing force by the resilient mechanism 20 disposed at the tip of the robot arm 100 and the swivel mechanism 70 disposed between the main shafts supporting the respective injection guns coaxially. Therefore, each injection gun 90 is surely inserted into each clutch operation oil injection port W2, and the engagement claw 137 of the clamp member 130 disposed on the front peripheral surface of the injection gun 90 is operated by the clutch of the transmission W. It is possible to reliably engage with an engagement flange portion W3 formed on the front peripheral surface of the oil injection port W2, and liquid tightness between each injection gun 90 and the clutch operation oil injection port W2 is maintained.

  In addition, the hoses connected to the vacuum operating path 93, the clutch operating oil supply path 94, and the clutch operating oil discharge path 95 via the joints 93a, 94a, 95a reach the support plates 91 of the clutch operating oil injection apparatus 200. The external force to be applied is absorbed by the spring bodies 123 and 126 disposed between the three sides of the support plate 91 excluding the opposing sides and the corresponding three sides of the base plate 2, thereby affecting the operation of injecting the clutch operating oil. There is nothing.

  In this state, the switching valve 92 is operated, and the inside of the clutch operating oil path including the clutch operating oil injection portion W1 in the transmission by the suction device (not shown) from the joint 93a connected to the vacuum path 93 through the hose (not shown). In the clutch operating oil path including the clutch operating oil injection portion W1 is set to a predetermined negative pressure.

  Next, the switching valve 92 is operated to supply a predetermined amount of clutch operating oil from a clutch operating oil tank (not shown) through a hose (not shown) from a joint 94a connected to the clutch operating oil supply path 94.

  Next, the switching valve 92 is operated, and the clutch operating oil discharge path until the liquid level sensor (not shown) disposed in the vicinity of the opening 90c of the clutch operating oil injection path 90b of the injection gun 90 does not sense the level of the clutch operating oil. The clutch operating oil is discharged from a joint 95a connected to 95 to a clutch operating oil tank (not shown) via a hose (not shown).

  When the above operation is finished, the engaging claw 137 of the clamp member 130 disposed on the distal peripheral surface of the injection gun 90 is engaged with the engaging flange W3 formed on the distal peripheral surface of the clutch operating oil inlet W2 of the transmission W. Then, the clutch operating oil injection device 200 disposed at the tip of the robot arm 100 returns to the original position.

  The liquid injection device according to the present invention is not limited to an example using a robot, and may be applied to the tip of a hand crane with a balancer represented by an automatic machine or a hand. Further, the present invention is not limited to the liquid injection to the two injection holes, but can also be applied to the liquid injection to two or more injection holes in series.

DESCRIPTION OF SYMBOLS 1 ... Fastening plate, 2 ... Base plate, 2a ... Standing part, 3 ... Fastening rod, 4 ... Bolt, 5 ... 1st plate, 6 ... 1st linear guide rail, 7 ... 1st linear guide, 8 ... 2nd plate , 9 ... 2nd linear guide rail, 10 ... 2nd linear guide, 11 ... 3rd plate, 12 ... 4th plate, 13 ... Non-rotating screw, 20 ... Bullet mechanism, 21 ... Bottomed cylindrical member, 22 ... Existence Cylindrical member with bottom step, 23 ... hole, 24 ... bottom of hole, 25 ... opening, 26 ... conical hole, 27 ... support rod, 28 ... annular plate, 29 ... compression spring, 30 ... small diameter cylindrical part, 31 ... Base end surface, 33 ... Spherical surface part, 34 ... Concave surface part, 35 ... Hole part, 36 ... Pin body, 37 ... Compression spring, 40 ... Stopper plate for second plate, 41 ... Bolt, 42 ... Standing part, 43 ... Stopper bolt, 50 ... Stop for third plate -Plate, 51 ... Bolt, 52 ... Standing part, 53 ... Stopper bolt, 60 ... Main shaft, 60a ... Large diameter part, 61 ... Nut, 62 ... Ring member, 62a ... Hole, 70 ... Swivel mechanism, 71 ... Spherical member 72 ... Upper housing, 73 ... Lower housing, 72a, 73a ... Hole in housing, 74 ... Bolt, 75 ... Concave seat, 76 ... Housing, 77 ... Bolt, 78, 78a, 78c ... Bolt, 78b ... Pin part, 78d DESCRIPTION OF SYMBOLS ... Pin part, 79 ... Stepped hole, 80 ... Cylindrical member, 81 ... Spring member, 90 ... Injection gun, 90a ... Housing, 90b ... Clutch operation oil injection path, 90c ... Opening, 90d ... Seal ring, 90e ... Packing, 91 ... support plate, 92 ... switching valve, 93 ... vacuum path, 94 ... clutch operating oil supply path, 93a, 94a, 95a ... joint, 93b ... Lung, 95 ... Clutch operating oil discharge path, 96 ... Bolt, 96a ... Pin body, 96b ... Hole, 98 ... Support plate, 98a ... Standing surface, 99, 99a ... Screw hole, 100 ... Robot arm, 100a ... Robot arm Of the robot arm, 110b ... the tip side of the robot arm, 110 ... bolt, 110a ... pin body, 110b ... hole, 121 ... support stay, 122 ... bolt, 122a ... pin body, 122b ... hole, 123 ... spring body, 124 ... support plate, 125 ... bolt, 125a ... pin body, 125b ... hole, 126 ... spring body, 130 ... clamp member, 131 ... projection, 132 ... intermediate member, 133 ... cylinder, 134 ... piston, 135 ... cylindrical part, 136 ... engagement pawls, 137 ... engagement pawls, 138 ... lowering air supply / discharge passages, 139 ... upward air supply passages, 150a, 150b ... bolts 151 ... Pin body, 152 ... Hole, 153 ... Pin body, 154a, 154b ... Bolt, 155 ... Hole, 156 ... Spring body, 157 ... Engagement part, 160a ... Bolt, 161 ... Pin body, 162 ... Hole, 164a ... Bolt, 163 ... Pin body, 165 ... Hole, 166 ... Spring body, 200 ... Oil injection device.
D: Conveying carriage, C / V: Conveying conveyor, W: Transmission, W1: Clutch operating oil injection part, W2: Clutch operating oil injection port, W3: Engaging flange part.

Claims (1)

A liquid injection device for injecting a liquid into at least two injection holes adjacent, the liquid injection apparatus, liftably two spindle against the lifting arm is in the vertical direction via the individual resilient mechanism and An injection gun is supported through a swivel mechanism that is rotatable about a horizontal axis and a vertical axis at the lower end of each of the two main shafts. A spherical member attached to the main shaft and a housing for holding the spherical member are provided, and a plurality of bolts and spring members arranged around the intermediate member are interposed between the housing and the annular member attached to the main shaft, The liquid injection device according to claim 1, wherein only one of the plurality of bolts is inserted into a cylindrical member provided in the housing, and the other bolts remain in the spring member .

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