JP2002326129A - Automatic lid inserting device for hollow tube - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically and efficiently insert lids in both open ends of a hollow tube. SOLUTION: An automatic lid inserting device for a hollow tube, which is installed along a carrying path of the hollow tube 3, automatically inserts the lid 11 in an open end of the hollow tube 3 while it is carried in an orientation perpendicular to the carrying direction. A lid extruding part comprises a standby part 99 opposed to the hollow tube 3 temporarily stopped in a lid inserting position, an extruding member 109 for extruding the lid stored in the standby part 99 into the hollow tube 3, and holding needles 112 as a chuck arranged on a front face of the extruding member 109. A back face of the lid 11 aligned with the hollow tube 3 in the standby part 99 is extruded from the standby part 99 while held by the holding needles 112, until it is inserted in a bore surface of the hollow tube 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic lid insertion device for inserting a lid into an open end of a fixed-size hollow tube.
It is used, for example, when a lid is inserted into both ends of the hollow tube, which is a component of the hollow slab unit, to close it.

[0002]

2. Description of the Related Art A hollow slab unit conventionally used to reduce the weight of a building slab is constructed by inserting a plurality of hollow tubes into a three-dimensionally assembled rebar frame.
Both are integrated by welding. After laying a number of such hollow slab units on the slab arrangement of a building, slab concrete is cast. As the hollow tube used for the hollow slab unit, a spiral tube having characteristics such as light weight, required strength, and low cost is used. The spiral tube is formed by spirally winding a strip of steel, joining the butted portions of both side edges by a seam joint, and cutting the strip to a fixed length.

In order to prevent cement slurry, water or the like from penetrating into the hollow tube, it is conventionally known to provide a closing lid at the open end of the tube (Japanese Patent Application Laid-Open No. 11-1999). No. 10731).

[0004] As one example, a metal lid is inserted into the inner diameter surface of the opening end of the tube, and a fitting flange portion formed by bending outward is welded or caulked to the inner diameter surface of the spiral tube. Is fixed. Furthermore, in order to improve the sealing property, a tape (duct tape) is attached to the fitting collar portion. Further, in order to improve the sealing property, the two liquids of the unfoamed foaming resin and the foaming expansion reaction inducer are transferred to the inside of the cap-shaped lid fitted on the outer diameter side of the pipe opening end. Alternatively, a method has been proposed in which the lid is quickly fitted to the end of the opening of the tube to cause a foaming reaction inside the tube (see the above publication).

[0005]

In the above-mentioned work of uniting the reinforcing bar frame and the hollow tube, the work of covering the lid has conventionally been performed manually. For this reason, there was a problem that the manufacturing efficiency of the hollow slab unit was low. Further, in the case of closing using a foaming synthetic resin, it is necessary to transfer the two liquids to the inside of the lid and then cover the opening end of the hollow tube while watching the foaming reaction, which is extremely inefficient. Was.

Accordingly, an object of the present invention is to enable a lid to be automatically inserted into an inner diameter surface of an open end of a hollow tube used in the above hollow slab unit and the like. Also,
Thereby, it is also an object to improve the production efficiency of the hollow tube slab unit.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is provided along a carrier of a hollow tube,
In the hollow tube lid automatic insertion device that automatically inserts a lid into the open end thereof during the transportation while arranging the hollow tubes in a direction perpendicular to the transportation direction, the lid temporarily stops at the lid insertion position. A standby portion facing the hollow tube, and an extruding member for extruding a lid housed in the standby portion against the hollow tube,
A lid pushing portion is constituted by the chuck provided on the front surface of the pushing member, and the back surface of the lid centered on the hollow tube in the standby portion is pushed out from the standby portion while the back surface of the lid is held by the chuck. The hollow tube was inserted into the inner diameter surface. With this configuration, the opening end of the hollow tube and the center of the lid exactly match, and the lid can be inserted smoothly. Further, since the back surface of the lid is held by the chuck, it is easy to insert the lid into the inner diameter surface of the hollow tube.

[0008] It is possible to adopt a configuration in which a pair of the above-mentioned lid insertion portions are provided in correspondence with the openings at both ends of the above-mentioned hollow tube, and these are arranged symmetrically on both sides of the above-mentioned carrier. With this configuration, the design and manufacture of the lid insertion portion are simplified.

The above-mentioned standby portion is constituted by a receiving member for receiving the lower surface of the lid accommodated therein, a guide member for guiding both side surfaces, an opening / closing member for opening and closing the front surface, and the above-mentioned extrusion member for forming the rear surface. Alternatively, a configuration in which the open portion on the upper surface faces the supply portion of the lid can be adopted. In this case, if the receiving member and the guide member are configured to be movable with respect to the lid, the size of the standby portion can be changed according to the size of the lid.

[0010] The chuck may be constituted by a pair of holding needles which protrude forward and backward from the front surface of the pushing member. According to this configuration, the lid can be held simply by piercing the holding needle from the back of the lid, and can be easily removed from the lid.

The lid may be made of a foam, and may be forcibly inserted into the inner surface of the hollow tube in an airtight manner. The foam used is a closed cell. By inserting the lid into the inner diameter surface of the hollow tube, the inconvenience that the outer diameter of the lid is larger than the outer diameter of the hollow tube can be prevented.

The above-mentioned hollow tube is used for various applications. As an example, a hollow tube as a component of a hollow slab unit unitized with a reinforcing bar can be mentioned.

[0013]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 shows an example of a finished product of the hollow slab unit 1 to be manufactured. The hollow slab unit 1 includes a reinforcing bar frame 2 and a plurality (three in the illustrated case) of hollow tubes 3. The reinforcing bar frame 2 includes left and right two vertical bars 4, an upward U-shaped horizontal bar 5, and a bottom bar 6. The horizontal streaks 5 are formed as a set of two for each hollow tube 3 and are arranged between the vertical streaks 4 and 4 at an interval at which the hollow tube 3 can be inserted. 4 is welded. The bottom muscles 6 are arranged in the same direction as the vertical muscles 4, and connect the bottoms of the horizontal muscles 5. The three-dimensional reinforcing bar frame 2 is constituted by the vertical bars 4, the horizontal bars 5, and the bottom bars 6. The hollow tube 3 is inserted between the vertical bar 4 and the auxiliary bar 6 between the pair of horizontal bars 5, and spot-welded at a contact portion with the vertical bar 4. The pitch P of each hollow tube 3 is constant.

As shown in FIG. 2, the hollow tube 3 is spirally wound while attaching a plurality of reinforcing ribs 8 in a longitudinal direction to a steel strip 7, and a seam 9 is formed at both side edges. And formed into a hollow tube and cut into a fixed length, and lids 11 and 1 made of styrene foam resin are provided on the inner diameter surfaces of both open ends.
1 is tightly fitted. A chamfered portion 10 is provided on the outer periphery of the tip of the lid 11.
Is formed. Irregularities due to the reinforcing ribs 8 and the seams 9 at both open ends of the hollow tube 3 are maintained in a watertight state that is absorbed by the elasticity of the styrene foam resin. The hollow tube 3 has a circular cross section as shown in FIG.
Oval (oval) cross-sections may be used.

FIG. 3 shows an entire method and apparatus for manufacturing the hollow slab unit 1 described above. In this apparatus, a main production line is constituted by a rebar frame transport path 12 for transporting the rebar frame 2 in a certain direction. A loading table 13 for the reinforcing bar frame 2 is provided at an upstream end of the production line, and an unloading table 14 for the completed hollow slab unit 1 is provided at a downstream end. In some cases, the loading table 13 is replaced with a reinforcing frame production line, and the unloading table 14 is replaced with an unloading conveyor.

A push-in assembling section 15, a welding section 16, and a lid inserting section 17, 17 are provided in the middle of the above-described reinforcing frame transport path 12 in order from the upstream side. The end portion of the hollow tube carrying-in path 18 in a direction orthogonal to the carrying path 2 is connected to the push-in assembling section 15. In the push-in assembling section 15, a process of automatically pushing the hollow pipe 3 loaded from the hollow pipe loading path 18 into the reinforcing frame 2 transported by the reinforcing frame transport path 12 to perform assembly. carry out. In the welded portion 16, a step of integrating the assembled rebar frame 2 and hollow tube 3 by welding is performed. In addition, the lid insertion portions 17 and 1
In step 7, the step of densely inserting the lids 11 into both open ends of the hollow tube 3 is performed.

The outlet of a hollow tube forming machine 19 is abutted against the entrance of the hollow tube carrying path 18, and the hollow tube 3 manufactured by the hollow tube forming machine 19 is loaded with the hollow tube. It is carried into the push-in assembly section 15 via the path 18. In the illustrated case, the elliptical molding machine 21 is installed in the middle of the hollow tube carry-in path 18. However, when the hollow tube 3 having a circular cross section is used, the operation of the elliptical molding machine 1 is stopped. Further, between the outlet side of the hollow tube forming machine 19 and the entrance of the hollow tube carry-in path 18, there may be a case where a seam end cutting device 114 described later is arranged.

Next, an apparatus of each unit for performing the above-described steps will be described in detail. First, details of a device constituting the push-in assembly unit 15 will be described with reference to FIGS.

As shown in FIG. 4, the rebar frame transfer path 1
Reference numeral 2 denotes a long main frame 22 and a chain conveyor 23 comprising two left and right endless chains 23a, 23a provided on the main frame 22. The chain conveyor 2
3, a locking piece 20 is attached at a constant pitch over the entire length, the reinforcing bar frame 2 is locked to the locking piece 20, and the reinforcing bar frame 2 is intermittently stopped and transported at a constant pitch and transported. The push-in assembling section 15 in which the above-described push-in assembling section 15 is provided in the middle of the rebar frame transport path 12 is
The support frame 24 is provided on the support frame 24 fixed to the main frame 22 so as to straddle the chain conveyor 23, and the support frame 25 of the hollow tube carrying path 18 is connected to one side of the support frame 24 in a direction orthogonal to the support frame 24. (See FIG. 4).

The chain conveyor 2 of the main frame 22
3, a pair of chuck cylinders 26 are attached upward in the left-right direction (the width direction of the main frame 22). A cylinder block 28 is provided on a piston rod 27 of each cylinder 26, and a pair of front and rear chucks 29, 29 which advance and retreat in opposite directions are provided on a surface of the cylinder block 28 facing the length direction of the main frame 22 (FIG. 8). These chucks 29, 29 hold a pair of horizontal bars 5, 5 bottom portion of the reinforcing bar frame 2 conveyed to the push-in assembling unit 15 from the front-rear direction, and temporarily restrain the reinforcing bar frame 2 at a predetermined position. A similar chuck device including the chuck cylinder 26, the cylinder block 28, and the chuck 29 is also provided in a welding portion 16 and a lid insertion portion 17 described later.

A guide bar 31 extending between the left and right chains 23a, 23a is fixed to the main frame 22 between the pair of front and rear chucks 29, 29. The guide bar 31 is provided with a groove 32 that matches the position of the bottom bar 6 of the reinforcing bar frame 2 and allows each bottom bar 6 to pass through (see FIG. 6A). By fitting each bottom bar 6 into each groove 32, as described later, when the hollow tube 3 is slid on the guide bar 31 and the hollow tube 3 is pushed into the reinforcing bar frame 2, the hollow tube 3 is caught by the auxiliary bar 6. It is pushed in smoothly without.

A pushing device 33 for the hollow tube 3 is provided at the end of the hollow tube carry-in path 18 (see FIG. 4).
The pushing device 33 is provided on a support table 34 provided on one side of the support frame 25 so as to be able to reciprocate with a stroke slightly exceeding the length of the hollow tube 2.
That is, the rack 35 for reciprocating the pushing device 33 and the guide rail 36 parallel to the rack 35 are arranged at positions near the entrance of the pushing assembly unit 15 (see FIGS. 4 and 5). Pinion 37 engaging with rack 35 (see FIG. 8)
And a slider 38 fitted to the guide rail 36 is attached to a motor board 39, and a drive motor 41 of the pinion 37 is attached to the motor board 39. The pushing arm 43 is driven by a motor 42 (preferably an air cylinder) mounted on the inner surface of the motor board 39. The pushing arm 43 can take two modes, a pushing state (see a solid line in FIG. 7) horizontally protruding above the hollow tube carrying path 18 and a standing state (see also a dashed line).

At the end of the hollow tube carrying path 18, that is, at the entrance of the push-in assembly 15, the support frame 2
5, a stopper cylinder 44 (see FIGS. 4 and 6) is mounted upward, and a stopper piece 45 provided on the piston rod is positioned higher than the feed surface of the feed roller 46 on the hollow tube carry-in path 18. And the hollow tube 3 is temporarily stopped at that position. The stopper piece 45
Gutter-shaped guide support plate 47 between
Are provided to guide the hollow tube 3. Line of sight A in the carrying direction passing through the center of the guide support plate 47
The hollow tube 3 is pushed along (see FIG. 6a). The guide bar 31 is provided on this line, and the reinforcing bar frame 2 is intermittently transported while being temporarily stopped so that the middle of the horizontal bars 5, 5 of each pair is located on this line.

A reinforcing frame receiving device 48 is provided on the line of sight A opposite to the direction in which the hollow tube 3 is pushed in (see FIGS. 5 and 6a). This reinforcing bar frame receiving device 48
A bifurcated receiving arm 49 is provided on the piston rod of the pneumatic cylinder. The bifurcated receiving arm 49 receives the outer surface of the longitudinal bar 4 disposed outside the reinforcing bar frame 2 from the outside during forward movement. The rebar frame 2 is prevented from moving in that direction.

When the hollow tube 3 is pushed into the rebar frame 2 positioned as described above, the guide means for pushing the hollow tube 3 smoothly is a two-side guide device 51 (see FIGS. 7 and 8) and a vertical guide device. 52 (see FIG. 4) are provided.

As shown in FIG.
A worm screw shaft 54 rotatably mounted on the support frame 24 via a bearing block 53;
4 and a pair of rotating arms 56 provided at two front and rear positions in the axial direction via worm wheels 55, 55 (see FIG. 4). The rotating arm 56 is connected to the screw shaft 54
(See FIGS. 4 and 5) (preferably, an air cylinder). The hollow motor 3 is turned at a 90-degree angle range, and faces downward with the diameter of the hollow tube 3 turned. A guide state is established (see FIGS. 7 and 8), and a return to the horizontal state (see the dashed line in FIG. 4) allows the rebar frame 2 to pass.

In the vertical guide device 52, the hollow tube 3
Is formed by the guide bar 31 described above. The upper guide means is a guide piece 5 mounted on the bearing block 53 between the rotary arms 56, 56.
8, 58 (see FIG. 4 etc.). The position of the mounting screw 60 (see FIGS. 7 and 8) can be changed in the vertical direction so that the position of the guide piece 58 can be changed in accordance with the diameter (height in the vertical direction) of the hollow tube 3. ing.

The reason why the support shafts 59, 59 of the pivot arms 56, 56 extend long (see FIG. 7 and FIG. 8) is that the pivot arms 56, 56 have different lengths depending on the diameter of the hollow tube 3. This is because the mounting position can be changed.

In the pushing assembly section 15 described above,
When the assembling of the three hollow tubes 3 into the reinforcing frame 2 is sequentially completed, the assembly is conveyed to the welding portion 16 in the next step.

Next, based on FIG. 9 to FIG.
6 will be described in detail. As described above, the welding portion 16 also has a pair of chuck cylinders 26, 26 (FIG. 10).
), And a chuck device using other components similar to those described above is provided.

A holding arm 61 extending from the main frame 22 is provided above the chuck cylinders 26, 26 (see FIGS. 10 and 11), and a holding cylinder 62 is provided at the tip thereof. The holding piece 63 provided at the tip of the piston rod faces the upper part of the hollow tube 3 to be welded.

A welding machine 64 is slidably mounted on a machine base 65 provided on the opposite side of the holding arm 61.
That is, guide rails 66, 66 and a ball screw shaft 67 (see FIG. 9) are provided on the machine base 65 in a direction perpendicular to the main frame 22, and the ball screw bearing 68 of the welding machine 64 is screwed to the ball screw shaft 67. Are combined. When driven by the drive motor 69 of the ball screw shaft 67, the welding machine 64 advances and retreats along the guide rails 66,66. The welding machine 64 can be moved up and down by a vertically moving cylinder 71 provided on the base portion except for a base portion including a fitting portion with the ball screw bearing 68 and the guide rails 66 and 66. This corresponds to the diameter of the hollow tube 3 and the welding machine 4
This is for changing the vertical position of 2.

The welding machine 64 is provided with a fixed electrode 72 and a movable electrode 73 facing the fixed electrode 72 and capable of moving vertically. The movable electrode 73 is supported by a downward cylinder 74 at the fulcrum 7.
5 is swung up and down. The fixed electrode 72
A positioning section 76 is provided between the movable electrode 73 and the movable electrode 73. When the welding machine 64 is advanced by the drive motor 69, the positioning portion 76 comes into contact with each end of the reinforcing bar frame 2 and the hollow tube 3, and the welding machine 64 and the assembly (the reinforcing bar frame 2 and the hollow (Assembly of the tube 3). The above fixed electrode 72
And the movable electrode 73, as shown in FIGS.
By the advance of the welding machine 64 and the action of the cylinder 74, the fixed electrode 72 is applied from the inner surface of the hollow tube 3 and
A movable electrode 73 is applied from above, and spot welding is performed by energizing the movable electrode 73 sandwiched between the electrodes 72 and 73. When the welding is completed, the welding machine 64 returns, and while the next hollow pipe 3 is temporarily stopped at the welding position by the next one-pitch feed, the welding machine 64 is advanced again to perform welding. By this welding, the assembly of the reinforcing bar frame 2 and the three hollow tubes 3 is integrated and transferred to the next lid insertion portion 17.

The lid insertion portions 17, 17 are symmetrically installed on both sides of the rebar frame transfer path 12 (see FIG. 3), and the configuration is also symmetric. Therefore, only the lid insertion portion 17 on one side will be described below with reference to FIGS.

As shown in FIG. 13, a lid mounting table 82 is provided on a support frame 81 connected to one side surface of the main frame 22. This lid mounting table 82 is provided with a belt conveyor 83 at the bottom. As shown in FIG. 14, on the transport surface of the belt conveyor 83, a large number of lids 11 ', which are in close contact with each other in the width direction, are turned over and arranged in multiple rows in the transport direction. The belt conveyor 83 is driven in a direction B opposite to the conveyance direction A (see FIG. 13) of the rebar frame conveyance path 12, and conveys the lid assembly 11 'in the direction of arrow B (FIG. 14).
reference). The belt conveyor 83 has a gradient (θ) that gradually decreases in the transport direction. The belt conveyor 83 is
It protrudes outside through the lower end of the front end wall 84 of the lid loading table 62.

A lid guide plate 85 is fixed along the inside of the front end wall 84, and the lid assembly plate 85
Determine the 1 'advance position. The shutter 86 is vertically movable by shutter cylinders 87, 87 (see FIG. 15) at a distance corresponding to the diameter of the lid assembly 11 'in front of the lid guide plate 85 (upstream of the belt conveyor 63). Provided. The lid guide plate 85 and the shutter 86 are mounted via comb-shaped adjustment blocks 88 and 89, respectively, so that their positions can be changed corresponding to the diameter of the lid assembly 11 '(the diameter of the lid 11). Can be The lower end edges of the front end wall 84 and the lid guide plate 85 and the belt conveyor 8
3, a slight vertical interval is provided, and an arm-shaped pusher 91 is inserted into the interval. The pusher 91 is pressed against the rear end surface of the lid assembly 11 ′ conveyed between the lid guide plate 85 and the shutter 86, and is moved perpendicularly to the conveyance direction B (FIG. 9) by an air slider 92 provided along the front end wall 84. 14).

At the end of the rebar frame transport path 2 between the lid guide plate 85 and the shutter 86, a lid separating portion 93 is provided which protrudes to the side of the belt conveyor 83. This lid separation part 9
The bottom surface of 3 has a rectangular discharge hole 94 (see FIGS. 14, 15 and 15a) for one sheet of the lid 11. The discharge hole 94 is normally closed by a shutter 96 provided in an opening / closing cylinder 95 (see FIG. 14). Further, a press-down cylinder 97 for separating the lid is provided above the discharge hole 94. The separation pusher 98 provided at the lower end of the piston rod of the push-down cylinder 97 pushes down the frontmost one lid 11 of the lid assembly 11 'to separate it from the lid assembly 11'. Discharge hole 9 that has been retracted and opened
4 to the standby unit 100 below.

In the standby section 100, a lid receiving cylinder 101 is provided below, and a lid receiving member 102 is provided on an upwardly facing piston rod. In addition, it has side guide cylinders 103, 103 for guiding both right and left sides of the lid 11 (see FIG. 16), and a guide member 104 is provided on each piston rod. Further, a shutter cylinder 105 is provided,
The push-out opening 107 of the lid 11 is opened and closed by a shutter 106 provided on the piston rod (see FIG. 15). An extruding cylinder 108 is provided at the rear of the extruding portion so as to face the shutter 106, and a disc-shaped extruding member 109 is provided on the piston rod.

As described above, the lower lid receiving member 102 and the left and right guide members 10 each supported by the cylinder are provided.
4. Front shutter 106 and rear pushing member 109
, The standby unit 100 whose upper part is opened (see FIG. 15)
Is formed. One lid 11 separated from the lid assembly 11 ′ is temporarily stored in the standby unit 100, and
It is positioned concentrically with the hollow tube 3.

In order to push the lid 11 positioned concentrically into the hollow tube 3 while maintaining its position, the positioning cylinder 11 is provided on the back side of the pushing member 109.
1 is attached to the piston rod of the extrusion cylinder 108, and the left and right 2 as a chuck for gripping the lid 11 are attached to the piston rod of the positioning cylinder 111.
A holding needle 112 is provided, and the holding needle 112 is penetrated through the pushing member 109 so as to be able to advance and retreat, and is pierced through the lid 11 provided on the front surface of the pushing member 109 (see FIG. 17). When the pushing cylinder 108 is driven in this state, the lid 11 is moved by the holding needle 112 to the pushing member 10.
9 and is pushed into the open end face of the hollow tube 3 (see FIG. 19). When the pushing of the lid 11 is completed, the pushing member 109 is pulled out of the lid 11 together with the holding needle 112 by the retraction of the piston rod of the pushing cylinder 108, and returns to the original state. In this case, the holding needle 112
Is retracted together with the piston rod of the pushing cylinder 108. However, prior to the retraction of the piston rod, the holding needle 112 can be retracted by the operation of the positioning cylinder 111 and pulled out from the lid 11.

Although the lid 11 has a diameter slightly larger than the inner diameter of the hollow tube 3, the chamfered portion 10 is formed on the outer periphery of the tip as described above (see FIG. 2). It is tightly fitted with the guide 10 and adheres to the inner surface in a watertight manner by its own elasticity.

Since the operation of inserting the lid 11 into the open ends on both sides of the hollow tube 3 is performed simultaneously at the same time, the pressing forces acting on the hollow tube 3 in the tube axial direction at the time of insertion are mutually different. Cancel each other out.

When the lid 11 is simultaneously inserted from both sides while maintaining the airtight state, the internal pressure of the hollow tube 3 slightly increases. Normally, the lid 11 can be sufficiently held by the friction between the lid 11 and the inner diameter surface of the hollow tube 3 and the internal air escapes with time, so there is no problem. As a measure for the above, the holding needle 112 can be penetrated through the lid 11, and the internal air can be discharged from a needle hole generated when the insertion of the lid 11 is completed and the lid 11 is pulled out. The needle hole is closed at an early stage due to the elasticity of the lid 22, so that water does not enter inside at the stage of actual use.

When such air discharge is not required, a means for gripping the back surface of the lid 11 can be used as a chuck instead of the holding needle 112.

[0045]

As described above, according to the present invention, the lid pushed out from the standby portion toward the opening end of the hollow tube exactly matches the center of the opening end, so that the lid can be automatically inserted. Can be performed smoothly. Also, since the back surface of the lid is held by the chuck, it is easy to insert the lid into the inner diameter surface of the hollow tube, and the outer diameter surface of the lid is more outward than the outer diameter surface of the hollow tube. No hollow tube can be provided.

Further, when the receiving member and the guide member of the standby section are configured to be movable with respect to the lid, the size of the standby section can be changed according to the size of the lid.

Further, since the operation of inserting the lid into both open ends of the hollow tube is performed simultaneously on both sides, the pressing force acting on the hollow tube in the axial direction of the tube cancels each other, so that there is provided a device which receives the pressing force. It becomes unnecessary.

[Brief description of the drawings]

FIG. 1 is a perspective view of a hollow tube unit.

FIG. 2 is a partially omitted cross-sectional view of a hollow tube.

FIG. 3 is a plan view of the device of the embodiment.

FIG. 4 is a longitudinal sectional front view of a push-in assembly part.

FIG. 5 is a plan view of the above.

FIG. 6 (a) is a partially enlarged plan view of the above.

FIG. 6 (b) is a partially enlarged sectional view of the above.

FIG. 7 is a view taken in the direction of arrows VII-VII in FIG. 4;

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a plan view of a welded portion.

FIG. 10 is a sectional view taken along line XX of FIG. 9;

FIG. 11 is a cross-sectional view of the welding state of line XX in FIG. 9;

12A is an enlarged cross-sectional view of a welded portion. FIG. 12B is a cross-sectional view taken along line bb in FIG.

FIG. 13 is a longitudinal sectional side view of a lid insertion portion.

FIG. 14 is a plan view of the above.

15 is a sectional view taken along line Y1-Y1 of FIG.

FIG. 16 is a cross-sectional view of the lid insertion portion with the lid separated.

17 is a sectional view taken along line Y2-Y2 of FIG.

FIG. 18 is a cross-sectional view of the lid insertion portion after the lid is pushed out.

19A is a partially omitted plan view of a hollow tube. FIG. 19B is a view showing an arrow X in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hollow slab unit 2 Reinforcing frame 3 Hollow tube 4 Vertical streak 5 Horizontal streak 6 Bottom streak 7 Strip steel 8 Reinforcement rib 9 Barbed joint 9a, 9b Barbed end 10 Chamfered part 11 Lid 12 Rebar frame conveyance path 13 Reference Signs List 14 carry-out table 15 push-in assembly part 16 welding part 17 lid insertion part 18 hollow tube carry-in path 19 hollow tube molding machine 20 locking piece 21 oval molding machine 22 main frame 23 chain conveyor 23a chain 24 support frame 25 support frame 26 chuck Cylinder 27 Piston rod 28 Cylinder block 29 Chuck 31 Guide bar 32 Groove 33 Pushing device 34 Support base 35 Rack 36 Guide rail 37 Pinion 38 Slider 39 Motor substrate 41 Drive motor 42 Motor 43 Push arm 44 Stopper cylinder 45 Stopper piece 46 Feed roller 47 plans Support plate 48 Reinforcing bar receiving device 49 Receiving arm 51 Both-side guide device 52 Vertical guide device 53 Bearing block 54 Worm screw shaft 55 Worm oil 56 Rotating arm 57 Drive motor 58 Guide piece 59 Support shaft 60 Mounting screw 61 Pressing arm 62 Pressing cylinder 63 Pressing piece 64 Welding machine 65 Machine base 66 Guide rail 67 Ball screw shaft 68 Ball screw bearing 69 Drive motor 71 Lifting cylinder 72 Fixed electrode 73 Movable electrode 74 Cylinder 75 Support point 76 Positioning section 81 Support frame 82 Lid loading table 83 Belt conveyor 84 Front end Wall 85 Lid guide plate 86 Shutter 87 Shutter cylinder 88 Adjustment block 89 Adjustment block 91 Pusher 92 Air slider 93 Lid separation part 94 Discharge hole 95 Opening / closing cylinder 96 Shutter 97 Push Lowering cylinder 98 Separation pusher 100 Standby unit 101 Lid receiving cylinder 102 Lid receiving member 103 Side guide cylinder 104 Guide member 105 Shutter cylinder 106 Shutter 107 Push-out opening 108 Push-out cylinder 109 Push-out member 111 Positioning cylinder 112 Holding needle 114 Splice Edge cutting device

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[Procedure amendment]

[Submission date] June 4, 2002 (2002.6.4)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0021

[Correction method] Change

[Correction contents]

A guide bar 31 extending between the left and right chains 23a, 23a is fixed to the main frame 22 between the pair of front and rear chucks 29, 29. The guide bar 31 is provided with a groove 32 that matches the position of the bottom bar 6 of the reinforcing bar frame 2 and allows each bottom bar 6 to pass through (see FIG. 6A). By fitting each bottom line 6 into each groove 32, as described below, when the hollow tube 3 is slid on the guide bar 31 and the hollow tube 3 is pushed into the reinforcing bar frame 2, the hollow tube 3 is caught by the bottom line 6. It is pushed in smoothly without.

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0023

[Correction method] Change

[Correction contents]

At the end of the hollow tube carrying path 18, that is, at the entrance of the push-in assembly 15, the support frame 2
5 is a stopper cylinder 44 (see FIGS. 4 and 6A) .
Is mounted upward, and a stopper piece 45 provided on the piston rod protrudes above the feed surface of the feed roller 46 on the hollow tube carry-in path 18 to temporarily move the hollow tube 3 to that position. Stop. A gutter-shaped guide support plate 47 is provided between the stopper piece 45 and the final feed roller 46 so as to guide the hollow tube 3. The guide support plate 47 carrying direction of the sight line A passing through the center of the hollow tube 3 along (see FIG. 6 (a)) is pressed. The guide bar 31 is provided on this line, and the reinforcing bar frame 2 is intermittently transported while being temporarily stopped so that the middle of the horizontal bars 5, 5 of each pair is located on this line.

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0024

[Correction method] Change

[Correction contents]

[0024] In the above line-of-sight A, opposite the pushing direction of the hollow tube 3 receives reinforcing bar frame 48 is provided (see FIGS. 5 and 6 (a)). This rebar frame receiving device 48
Is formed by an air cylinder, a bifurcated receiving arm 49 is provided on its piston rod, receives the outer side surface of the horizontal streak 5 of the reinforcing bar frame 2 from the outside when moving forward, and the reinforcing bar frame 2 It prevents movement in that direction.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction contents]

As shown in FIG. 13, a lid mounting table 82 is provided on a support frame 81 connected to one side surface of the main frame 22. This lid mounting table 82 is provided with a belt conveyor 83 at the bottom. As shown in FIG. 14, on the transport surface of the belt conveyor 83, a large number of lids 11 ', which are in close contact with each other in the width direction, are turned over and arranged in multiple rows in the transport direction. The belt conveyor 83 is driven in a direction B opposite to the conveyance direction A (see FIG. 13) of the rebar frame conveyance path 12, and conveys the lid assembly 11 'in the direction of arrow B (FIG. 14).
reference). The belt conveyor 83 has a gradient (θ) that gradually decreases in the transport direction. The belt conveyor 83 is
It passes through the lower end of the front end wall 84 of the lid loading table 82 and projects outside.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction contents]

A lid guide plate 85 is fixed along the inside of the front end wall 84, and the lid assembly plate 85
Determine the 1 'advance position. The shutter 86 is vertically movable by shutter cylinders 87, 87 (see FIG. 15) at a distance corresponding to the diameter of the lid assembly 11 'in front of the lid guide plate 85 (upstream of the belt conveyor 63). Branch
Be held. The lid guide plate 85 and the shutter 86 are mounted via comb-shaped adjustment blocks 88 and 89, respectively, so that their positions can be changed corresponding to the diameter of the lid assembly 11 '(the diameter of the lid 11). Can be The lower end edges of the front end wall 84 and the lid guide plate 85 and the belt conveyor 8
3, a slight vertical interval is provided, and an arm-shaped pusher 91 is inserted into the interval. The pusher 91 is pressed against the rear end surface of the lid assembly 11 ′ conveyed between the lid guide plate 85 and the shutter 86, and is moved perpendicularly to the conveyance direction B (FIG. 9) by an air slider 92 provided along the front end wall 84. 14).

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0037

[Correction method] Change

[Correction contents]

At the end of the rebar frame transport path 2 between the lid guide plate 85 and the shutter 86, a lid separating portion 93 is provided which protrudes to the side of the belt conveyor 83. This lid separation part 9
3 of bottom discharge hole 94 (FIG. 14, FIG. 1 5 see) rectangle for one sheet of the lid 11 is provided. The discharge hole 94 is normally closed by a shutter 96 provided in an opening / closing cylinder 95 (see FIG. 14). Further, a press-down cylinder 97 for separating the lid is provided above the discharge hole 94. The separation pusher 98 provided at the lower end of the piston rod of the push-down cylinder 97 pushes down the frontmost one lid 11 of the lid assembly 11 'to separate it from the lid assembly 11'. depressing from the discharge hole 94 which is opened by retracting the lower of the standby section 99.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction contents]

The standby portion 99 has a lid receiving cylinder 1
01 is provided, and a lid receiving member 102 is provided on the upwardly facing piston rod. Further, it has side guide cylinders 103, 103 for guiding both right and left sides of the lid 11 (FIG. 1).
6), a guide member 104 is provided on each piston rod. Further, a shutter cylinder 105 is provided, and a push-out opening 107 of the lid 11 is opened and closed by a shutter 106 provided on the piston rod (see FIG. 15). An extruding cylinder 108 is provided at the rear of the extruding portion facing the shutter 106, and a disc-shaped extruding member 109 is provided on the piston rod.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0039

[Correction method] Change

[Correction contents]

As described above, the lower lid receiving member 102 and the left and right guide members 10 each supported by the cylinder are provided.
4. Front shutter 106 and rear pushing member 109
As a result, a standby portion 99 (see FIG. 15) whose upper portion is opened is formed. One lid 1 separated from the lid assembly 11 '
1 is temporarily stored in the standby portion 99 and is positioned coaxially with the hollow tube 3.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction contents]

In order to push the lid 11 positioned concentrically into the hollow tube 3 while maintaining its position, the positioning cylinder 11 is provided on the back side of the pushing member 109.
1 is attached to the piston rod of the extrusion cylinder 108, and the left and right 2 as a chuck for gripping the lid 11 are attached to the piston rod of the positioning cylinder 111.
A holding needle 112 is provided, and the holding needle 112 is penetrated through the pushing member 109 so as to be able to advance and retreat, and is pierced through the lid 11 provided on the front surface of the pushing member 109 (see FIG. 17). When the pushing cylinder 108 is driven in this state, the lid 11 is moved by the holding needle 112 to the pushing member 10.
9 and is pushed into the open end face of the hollow tube 3 (see FIG. 18 ). When the pushing of the lid 11 is completed, the pushing member 109 is pulled out of the lid 11 together with the holding needle 112 by the retraction of the piston rod of the pushing cylinder 108, and returns to the original state. In this case, the holding needle 112
Is retracted together with the piston rod of the pushing cylinder 108. However, prior to the retraction of the piston rod, the holding needle 112 can be retracted by the operation of the positioning cylinder 111 and pulled out from the lid 11.

[Procedure amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0043

[Correction method] Change

[Correction contents]

When the lid 11 is simultaneously inserted from both sides while maintaining the airtight state, the internal pressure of the hollow tube 3 slightly increases. Normally, the lid 11 can be sufficiently held by the friction between the lid 11 and the inner diameter surface of the hollow tube 3 and the internal air escapes with time, so there is no problem. as measures, the holding needle 112 is penetrated through the lid 11, the needle holes or et Internal air generated when unplugged this by insertion of the lid 11 is completed can be made to be discharged. The needle hole is closed at an early stage due to the elasticity of the lid 11 , so that water does not enter inside at the stage of actual use.

[Procedure amendment 11]

[Document name to be amended] Statement

[Correction target item name] Explanation of sign

[Correction method] Change

[Correction contents]

[Explanation of Signs] 1 Hollow slab unit 2 Reinforcing frame 3 Hollow tube 4 Longitudinal bar 5 Lateral bar 6 Bottom bar 7 Strip steel 8 Reinforcement rib 9 Hook joint 9a, 9b Hook end 10 Chamfer 11 Lid 12 Reinforcement frame Conveyance path 13 Loading table 14 Unloading table 15 Push-in assembly part 16 Welding part 17 Lid insertion part 18 Hollow tube introduction path 19 Hollow tube molding machine 20 Locking piece 21 Oval molding machine 22 Main frame 23 Chain conveyor 23a Chain 24 Support frame Reference Signs List 25 Support frame 26 Chuck cylinder 27 Piston rod 28 Cylinder block 29 Chuck 31 Guide bar 32 Groove 33 Pushing device 34 Support base 35 Rack 36 Guide rail 37 Pinion 38 Slider 39 Motor substrate 41 Drive motor 42 Motor 43 Push arm 44 Stopper cylinder 45 Stopper piece 46 feed Rollers 47 guide the support plate 48 rebar receiving device 49 receives the arm 51 on both sides guide device 52 vertically guiding device 53 the bearing block 54 the worm screw shaft 55 worm wheel 56 rotates the arm 57 driving the motor 58 guide piece 59 supporting shaft 60 mounting screws 61 push arm 62 holding cylinder 63 holding piece 64 welding machine 65 machine base 66 guide rail 67 ball screw shaft 68 ball screw bearing 69 drive motor 71 elevating cylinder 72 fixed electrode 73 movable electrode 74 cylinder 75 fulcrum 76 positioning part 81 support frame 82 lid mounting base 83 Belt conveyor 84 Front end wall 85 Lid guide plate 86 Shutter 87 Shutter cylinder 88 Adjusting block 89 Adjusting block 91 Pusher 92 Air slider 93 Lid separating part 94 Discharge hole 95 Opening / closing cylinder 96 Yatta 97 pressing cylinder 98 separated pusher 99 waiting section 101 lid receiving cylinder 102 cover receiving member 103 side guide cylinder 104 guide member 105 shutter cylinder 106 shutter 107 extrusion opening 108 extrusion cylinder 109 pushing member 111 positioned cylinder 112 holding pin 114 Splice end cutting device

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kengo Fujii 1-12-19 Kitahorie, Nishi-ku, Osaka-shi F-term in Kurimoto Iron Works, Ltd. (reference) 3C030 BB01 BC04 BC19 CB11

Claims (6)

[Claims] 1. A hollow tube which is installed along a conveying path of a hollow tube and which automatically inserts a lid into an open end thereof during the conveying while arranging the hollow tubes in a direction perpendicular to the conveying direction. In the automatic lid insertion device, a standby portion facing the hollow tube temporarily stopped at the lid insertion position, an extruding member for extruding a lid stored in the standby portion against the hollow tube, and an extruding member thereof A lid pushing portion is constituted by a chuck provided on the front surface of the lid, and the back surface of the lid, which is aligned with the hollow tube in the standby portion, is held by the chuck, and the holding portion is pushed out from the standby portion while being held. An automatic hollow tube lid insertion device, which is inserted into the inner diameter surface of an empty tube. 2. The apparatus according to claim 1, wherein a pair of the lid push-out portions are provided opposite to both open ends of the hollow tube, and these are formed symmetrically on both sides of the transport path. Automatic insertion device for hollow tube lid. 3. The waiting section includes a receiving member that receives a lower surface of a lid housed therein, a guide member that guides both side surfaces,
The hollow tube lid according to claim 1, wherein the lid is configured by an opening / closing member that opens and closes a front surface and the pushing member that forms a rear surface, and an open portion of the upper surface faces a supply portion of the lid. Automatic insertion device. 4. The hollow tube lid automatic according to claim 1, wherein said chuck is constituted by a pair of holding needles projecting forward and backward to the front surface of said pushing member. Insertion device. 5. The hollow tube according to claim 1, wherein the lid is a foam, and the lid is forcibly inserted in a watertight state into an inner diameter surface of the hollow tube. Automatic lid insertion device. 6. The automatic insertion of a lid of a hollow tube according to claim 1, wherein the hollow tube is a component of a hollow slab unit unitized with a reinforcing bar frame. apparatus.