JPH0848488A - Holding transfer device - Google Patents

Abstract

PURPOSE:To provide a holding transfer device which can hold each rod member at the uppermost position easily and surely. CONSTITUTION:A holding transfer device is equipped with a placing truck 3 which is constituted by placing a number of metal screens 5 each of which is formed by the assembly in a lattice form from the horizontal metals and the longitudinal stems as rod members, in lamination, carrying-in trolley 6 which can shift horizontally between the upper position of the placing truck 3 and the upper position of an assembly board, and a clamping member 20 which is installed in a vertically movable manner at the position corresponding to the four peripheral end part of the metal screen 5 of the carrying-in trolley 6, and can hold the metal screens 5 on the placing truck 3 one by one successively from the uppermost metal screen. Each clamping member 20 has a pair of pieces which can be attached and separated each other, at the top end, and a sensor for detecting the metal screen is installed on the piece. Further, a lifter 25 for raising and lowering the placing 3 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for gripping and carrying various rods which constitute a wire mesh for a mesh fence installed around a park or a house.

[0002]

2. Description of the Related Art The applicant previously proposed a method and apparatus for assembling a mesh fence from a wire mesh in which horizontal bars and vertical bars constituting a bar as described above are assembled in a lattice pattern (Japanese Patent Application No. 5-184591). In this device, a loading carriage (mounting platform) for stacking and mounting a large number of wire nets having horizontal and vertical stripes assembled in a grid pattern on the upper surface is installed at a loading position (first station) so that the rails can travel. A carry-in trolley (moving member) is installed horizontally movable between a position above the carry-in position where the carry-in truck is located and above the assembly base (second station), and corresponds to the four peripheral ends of the wire mesh in the carry-in trolley. Clamping members (grasping members) that can sequentially grip the wire mesh on the carry-in truck at the carry-in position from the uppermost one are installed so that the wire mesh can be moved up and down one by one, from the carry-in position to the assembly stand. A device for gripping and conveying is provided.

By the way, in the above-mentioned conventional gripping and conveying apparatus, since the wire mesh is gripped only by the lifting stroke of the clamp member, it is not easy and uncertain to grip each wire mesh one by one. There was a problem. Also, the lifting stroke of the clamp member is set to be larger than the height of the stacked wire nets, but when the wire mesh is reduced, the position of the uppermost wire net to be gripped is also lowered, and the lifting stroke of the clamp member is increased. There is also a problem that the size becomes gradually larger, and it is difficult to grip the set stroke alone.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention solves the above-mentioned problems of the prior art and provides a gripping and conveying device capable of easily and reliably gripping each bar at the uppermost position. The purpose is to

[0005]

In order to achieve the above object, the invention of claim 1 is such that, in the gripping and conveying device as described above, each gripping member is a pair of members which can be brought into contact with and separated from each other when gripping a bar. Has a gripping piece at the tip, and a sensor for detecting a bar is attached to the gripping piece. Further, a lifter for raising and lowering the mounting table of the first station is installed.

According to a second aspect of the present invention, in the first aspect, one gripping member is installed at each of the positions corresponding to both ends of the bar, and a manual handle is provided to enable the gripping members to come into contact with and separate from each other. A mechanism is provided.

[0007]

With the above structure, it is possible to detect the uppermost bar by the sensor, grasp it by the grasping member, and raise the mounting table by the lifter to set the height of the bar to a predetermined position. Therefore, the gripping of the bar member by the gripping member is easy and reliable.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a front view showing the carrying-in side of a gripping and conveying device according to an embodiment of the present invention, FIG. 2 is a plan view of the same as above, and FIG. FIG. 4 is a perspective view of the wire mesh thus encased, FIG. 4 is an enlarged vertical side view taken along the line AA of FIG. 2, and FIG. 5 is an enlarged vertical front view taken along the line BB of FIG. In FIGS. 1 and 2, 1 is a machine frame on one side of an assembly table (not shown), 2 is a rail laid inside the machine frame 1, 3 is a wheel 4 mounted on the rail 2, and a carry-in substantially directly under the machine frame 1 As shown in FIG. 3, the loading carriage 5 installed so as to be able to travel to a position is composed of a lower horizontal streak 5a and an upper vertical streak 5b, and a plurality of wire meshes are placed on the upper surface of the loading carriage 3 and 6 is a machine frame 1 The loading trolley for loading the wire nets 5 placed on the loading trolley 3 on the loading trolley 3 one by one from the uppermost one to the assembly table, and the loading trolley 6
Is a base body, 8 is a wheel therebelow, 10 is a reversible motor for rotating the wheel 8, and 11 is a rail. Also, 15 is the base body 7
Linear sliders are provided on both sides of the slider so as to be horizontally movable in a direction orthogonal to the carry-in trolley 6, 16 is its rail, and 18 are provided on both ends of both sliders 15 so that a total of four sliders can be vertically moved. The vertical moving rods 20 are clamp members provided at the tip (lower end) of the vertical moving rod 18 to clamp the wire net 5, and these members have substantially the same structure as the conventional ones.

In FIG. 1, reference numeral 25 is the rails 2 and 2 at the carry-in position.
With a lifter installed between them, a loading carriage 3 on which a large number of wire nets 5 are stacked and placed can be lifted up and down by lifting from a rail 2. As shown in FIGS. 4 and 5, one of the sliders 15 travels with the lower engaging portion 27 engaged with the rail 16,
Although it can be brought into and out of contact with the other slider (not shown) that is also installed in the same manner, the mechanism with a manual handle 28 makes it come in and out of contact. The mechanism 28 has a screw shaft 31 that is screwed into the upper screw portions 30 of both sliders 15. The screw shaft 31 is not shown in the drawing but is reverse-threaded with the middle portion as a boundary so that it can be carried between both sliders. The trolley 6 is provided so as to be supported by support pieces 33 provided upright at both ends thereof, and a manual handle 34 is attached to one end thereof. When the handle 34 is manually rotated, both sliders approach or move at the same time. Separate. It is the clamp member 20 that enables both sliders to come into contact with and separate from each other as described above.
This is because the size of the wire net 5 to be gripped by, that is, the vertical width Wb may change with respect to the horizontal width Wa of the wire net 5 as shown in FIG. 3, so that such a case can be dealt with. Reference numeral 35 is a lock handle fixed to the support piece 33 with a bolt 36 for fixing the slider position.

A rack gear 38 is formed on an outer surface axial direction of the vertical moving rod 18 provided at both ends of both sliders 15, and the gear 38 receives a rotational force from a pinion (not shown) driven by a reversible motor 40. It is slid vertically. A cylinder 42 is bolted to the tip end of the vertical moving rod 18, and a clamp member 20 is provided at the tip end of the cylinder. The clamp member 20 can be contacted and separated from each other by the cylinder 42. , Is composed of a pair of pieces 20a, 20b that grip the upper longitudinal streaks 5b of the wire mesh 5 when approaching. The pieces 20a and 20b consist of two bolted pieces as shown in FIG. 5, but they may be one piece. As shown in FIG. 6, the pieces 20a and 20b are provided with laser projectors 45a and light receivers 45b, which are sensors for detecting a wire mesh, at the opposite ends thereof in the mounting holes 46a and 46b. Laser light is emitted from the light emitter 45a toward the light receiver 45b, and the laser light is emitted from the light receiver 45b.
The wire mesh 5 is detected when the light is no longer received at b. However, the sensor including the light emitters / receivers 45a and 45b is merely an example, and instead, the light emitter / receiver may be a reflection type in which one of the mounting holes 46a is mounted.

The operation of the above embodiment will be described with reference to FIG. A loading trolley 6 in which a loading carriage 3 having a predetermined number (for example, 50 to 100) of wire nets 5 stacked is in a standby position as shown in FIG.
When it reaches the loading position below and stops, the loading trolley 6
The motor 40 is driven to rotate in the normal direction, and the rack and pinion mechanism moves the vertical moving rod 18 downward. At the time of this downward movement, the projector 45a
The laser beam X is emitted from the photodetector 45b to the photodetector 45b, and the photodetector 45b receives the laser beam X (FIG. 6A). Then, the laser beam X from the projector 45a moves further downward and the upper longitudinal stripes 5 of the wire mesh 5
When the light is blocked by b and the light receiver 45b cannot receive light, the light receiver 45b detects it (FIG. 6B). Based on this detection signal, the cylinder 42 is actuated, and the piece 20 of the clamp member 20 is
a and 20b are moved toward each other so that the upper vertical streaks 5b of the wire net 5 are placed on the upper surface of the tip thereof, and the four circumferential ends thereof, which are indicated by black circles in FIG. 3, are simultaneously gripped (FIG. 6C).
After gripping, the motor 40 is driven in reverse to move the vertical moving rod 18 upward, and the wire net 5 gripped by the clamp member 20 is also lifted (FIG. 6D).

After the vertical moving rod 18 which holds and lifts the wire net 5 in this manner reaches a predetermined height position and stops,
The carriage 10 is driven in the normal direction, whereby the carriage body 22 moved along the rails 11 brings the loading trolley 6 above the assembly carriage. Thereafter, the motor 40 is driven in the forward direction to move the vertical moving rod 18 downward, and after reaching a predetermined position on the assembly table, the cylinder 42 is operated and the pieces 20a and 20b of the clamp member 20 are operated.
Are moved in a direction in which they are separated from each other, and
Simultaneously release the grips of its four peripheral edges on b. Thereby, the wire net 5 is placed and supported on the assembly table. On the other hand, after the grip is released, the motor 40 is driven in the reverse direction to move the vertical moving rod 18 upward, and after the vertical moving rod 18 reaches the predetermined height position and is stopped, the motor 10 is driven in the reverse direction, whereby the rail is driven. The carry-in trolley 6 is again brought above the carry-in position by the table body 22 which is moved backwards along the line 11. A series of net assembling operations such as inserting the insertion holes of the pipe into both ends of the wire net 5 placed and supported on the assembling table and welding operation after the insertion are the same as the conventional one.

The above is one cycle for transporting one sheet of wire mesh 5 from the top of the loading carriage 3 to the assembly stand, and these operations are successively carried out successively under the control of a control panel (not shown). Then, when a predetermined number (for example, 20) of wire nets 5 are gripped and conveyed, and the number of the wire nets 5 on the carry-in carriage 3 decreases, the lifter 25 causes the carry-in carriage 3 to decrease the height of the wire nets 5. Can be lifted. Therefore, as long as the lifting stroke Lb of the clamp member 20 due to the lowering of the vertical moving rod 18 is set to be larger than the initial stacking height Hb of the wire mesh 5, the wire mesh 5 can be sufficiently reduced. it can. In this way, the loading cart 3 lifts as the wire mesh 5 decreases.
When the wire nets 5 are lifted several times by 25 and all of the wire nets 5 have been conveyed, the lifter 25 lowers them and the wheels 4 are placed on the rails 2 again and run along the rails 2 to the wire net feed section. .

A wire mesh 5 having a vertical width Wb different from a horizontal width Wa
When it becomes necessary to grip and transport the screw, the manual handle 34 is turned to rotate the screw shaft 31. As a result, both sliders 15 move in the direction of approaching or separating on the shaft via the upper screw portion 30 screwed with the screw shaft 31, and the clamp member 20 comes to a position corresponding to the four peripheral ends of the wire mesh. After that, the lock handle 35 may be used to fix it in that position.

The carrying-in position as the grip start position and the assembly table as the grip end position in this embodiment are merely examples.
It goes without saying that the present invention is not applicable only between these positions, but can be applied between any other positions between the first station and the second station. Further, the carry-in trolley 6 as the horizontally moving member and the clamp member 20 as the gripping member are merely examples, and the present invention can be implemented by changing the design of the constituent members in various ways. Further, although the horizontal streaks 5a and the vertical streaks 5b of the wire net 5 are shown as the bar members, the wire net may not necessarily be such a wire net, and the material may not necessarily be a metal, and a net other than a metal may be used as long as it has a certain degree of rigidity. Good.

[0016]

According to the first aspect of the present invention, since it has the above-described structure, the gripping of each bar at the uppermost position from the bar members stacked in a large number on the mounting table is more than that of the conventional one. Therefore, it is possible to carry out the rod material easily and reliably, and it is possible to reliably transport the bar material from the first station to the second station.
According to the invention of claim 2, even if the size of the bar is changed, it can be easily dealt with by operating the manual handle, and there is an excellent effect that it is rich in operability and practicality.

[Brief description of drawings]

FIG. 1 is a front view showing a carry-in side of a gripping and conveying apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a perspective view of a wire mesh as a mesh member.

FIG. 4 is an enlarged vertical side view taken along the line AA of FIG.

5 is an enlarged vertical sectional front view taken along the line BB of FIG.

6A to 6D are partial views for explaining the operation.

[Explanation of symbols]

 1 Machine frame 2 Rails 3 Carrying truck (carrying table) 5 Wire mesh 5a Lower horizontal bar (bar) 5b Upper vertical bar (bar) 6 Carrying trolley (moving member) 7 Main body 8 Wheels 10 Motor 15 Linear slider 18 Vertical moving rod 20 Clamping member (grasping member) 20a Part 20b Part 25 Lifter 34 Manual handle 45a Emitter 45b Receiver

Continuation of front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display area B66C 17/04

Claims (2)

[Claims] 1. A mounting table, which is installed in the first station and stacks and mounts a large number of rods on its upper surface, and between a position above the first station and a position above the second station where the mounting table is located. A moving member installed so as to be horizontally movable, and vertically movable at a position corresponding to at least both ends of the bar member in the moving member, and the bar member on the mounting table at the first station In a gripping and conveying device including a gripping member capable of sequentially gripping one by one, each gripping member has a pair of gripping pieces at a tip end thereof that can be brought into contact with and separated from each other when gripping a bar material, and the gripping pieces. A gripping / conveying device is characterized in that a sensor for detecting a bar is attached to the bar and a lifter for moving up and down the mounting table of the first station is installed. 2. A gripping member is installed at a position corresponding to both ends of the bar, one by one, and a mechanism with a manual handle is provided which allows the gripping members to come into contact with and separate from each other. Gripping and conveying device.