JPH0123929Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improved bundling device for hot-rolled or cold-rolled sheet packaging equipment.

[Prior Art] Figure 1 shows the general packaging for sheet products. In the figure, 1 is a sheet product, 4 is a wooden skid in the longitudinal direction, 4a is a skid in the width direction, and 7, 7a are hoops. The sheet product 1 has its top, bottom and side surfaces covered with anti-rust paper and/or steel plate. Depending on the width of the sheet, three to five longitudinal wooden skids 4 are laid on the underside of the sheet product, and are each banded with a hoop 7. Furthermore, two to five skids 4a in the width direction are laid down depending on the length of the sheet, and each of the skids 4a is tied with a hoop 7a.

FIG. 2 is a system diagram showing an example of a sheet packaging line. An example of such a sheet packing line is also described in the Steel Handbook, Third Edition (1), pages 692-693. The packing conveyor 3 of the sheet packing line moves from the left side to the right side as shown in FIG. 2, and the sheets are sequentially packed. This packing process will be explained with reference to FIGS. 2a to 2j.

(a) A longitudinal wooden skid 4 corresponding to the length of the sheet products 1 to be packed is placed on the packaging conveyor 3.
are lined up in an appropriate number according to the width of the sheet product 1, with the longitudinal direction facing the traveling direction of the conveyor 3.

(b) Place the base plate 5 on the skid 4 for wrapping the bottom of the sheet product.

(c) Place the sheet products 1 in the packaging unit onto the packaging conveyor 3 by the transfer machine 2, aligning the centers.

(d) Pack the product in rust-proof paper according to the packaging specifications.

(e) Wrap the top plate.

(f) Wrap the side panels.

(g) The packaging material 1 then passes through a binding device 6. At this time, within the binding device 6, a hoop 7 is suspended from a hoop holding reel at a position where the longitudinal skid passes. The packing material is banded by itself at the skid position while pressing the hoop 7 with the front end of the skid 4, and (h) this longitudinal band is tied at the position where the packing material passes through the binding device 6.

(i) Insert an appropriate amount of widthwise skids into the underside of the longitudinal skids according to the length of the sheet, and tie the sheets with bands in the width direction.

(j) Spray the display, attach the label, wrap it, and then send it out.

The present invention relates to an improvement of the binding device 6 in the above step (g). The binding device 6 is a device for binding hoops 7 by banding them at the position of the skid 4 in the longitudinal direction of the packaging materials shown in FIG. As shown in (g) of the process diagram of FIG. 2, this binding device 6 has a hoop 7 suspended from a hoop holding reel 8, the lower end of which is gripped by a gripper device 9, and the packaging material 1 is placed here. Let it pass. Packing material 1 as shown in process diagram (h)
The player presses the hoop 7 and ties the hoop around himself. Following the state shown in FIG. 2(h), binding is performed by tying the rear hoop end.

A plan view of the gripper device 9 of a conventionally used binding device 6 (manufactured by Koukan Kiko Co., Ltd., for example) is shown in FIG. 3, and a view taken along the line A--A in FIG. 4 is shown. The gripper device 9 is a device for gripping the lower end of the hoop 7 suspended from the hoop holding reel 8 when the packaging material passes therethrough, and includes the same number of devices as the number of suspended hoops. FIG. 3 shows that the packaging material is transported in direction D, and three rows of gripper devices 9 are provided. Before the packaging material 1 is sent in the direction D in FIGS. 3 and 4, each hoop 7 is inserted into the gap between the eccentric roller 11 and fixed roller 12 of the gripper device 9, and is activated by a motion command device (not shown). The cylinder 10 is operated to rotate the eccentric roller, and the hoop 7 is held between the eccentric roller 11 and the fixed roller 12.

The packaging material placed on top of the skid is the fifth
When the hoop 7 is transferred onto the conveyor 3 as shown in the figure, the hoop 7 is fitted into the recess on the lower surface of the skid 4, as shown in FIG.

FIG. 3 shows the plane of the gripper device 9 that temporarily grips the lower ends of the three hoops 7 when the packaging material passes through, and the hoop guide portion of the gripper device 9 is operated by, for example, a drive device 13 for moving the gripper. The packing material can be moved in a direction perpendicular to the traveling direction D through a shaft 14 having left and right screws that can be rotated and a nut 15 that is screwed into this threaded shaft 14. The hoop 7 is set in advance at an appropriate position for hanging the band. The gripper device 9 is connected to the air cylinder 1 as shown in FIG.
The lower end of the hoop 7 is connected to the roller 1.
It is designed to be inserted between 1 and 12 and held. The shaft 16 rotates the eccentric roller 11 by driving the cylinder 10, and rotates the fixed roller 12.
This is a transmission shaft for gripping and releasing the hoop 7 between the shaft 16 and the eccentric roller 11, and torque is transmitted between the shaft 16 and the eccentric roller 11 via a sliding key 17.

When the gripper device 9 is moved to a predetermined position and the lower end of the hoop 7 is gripped between the eccentric roller 11 and the fixed roller 12, the packing material crosses the hoop 7 in the direction D as shown in FIG. It will be transported to the factory and banding work will be carried out. That is, the hoop 7 fits into a groove recessed in the bottom surface of the longitudinal wooden skid 4, as shown in FIG. When the packaging material has passed through the position of the gripper device 9, the gripper device 9 releases the grip on the lower end of the hoop 7 by the cylinder 10, and the hoop 7 is caulked into an endless ring shape by another mechanism (not shown). .

[Problem that the invention attempts to solve]

In the above process, conventionally, the hoop 7 sometimes hangs in a position out of the groove formed in the bottom surface of the longitudinal wooden skid 4.

This is because the positions of the gripper device 9 and the skid 4 are not completely aligned in advance.
There are cases where the hoop 7 does not fit into the groove of the skid 4, or the hoop protrudes from the groove of the skid 4 because the center line of the skid 4 and the center line of the hoop are tilted. This occurs because the hoop 7 does not have the flexibility to move left and right because the lower end of the hoop is gripped by a gripper device.

If the hoop 7 is hung out of the groove of the skid 4, the hoop may be damaged during handling of the packaging material, for example by being caught on a forklift or colliding with another object, causing the band to break and the packaging to be damaged. There is a problem that can be solved. Therefore, if the band is not in normal condition, it will be necessary to rehang it, which will significantly reduce the efficiency of the packing operation.

In order to solve the above-mentioned problems, the present invention has been developed to solve the above-mentioned problems, even when the skids and hoops are misaligned, or when the skids are not aligned parallel to each other and the center lines of the skids and hoops are tilted. To provide a packaging material binding device which guides the hoop so that it always fits in the groove of the skid.

The present invention includes a conveyor for placing packaging materials on a skid whose longitudinal direction is oriented in the transport direction and transporting the packaging materials together with the skid; a hoop hanging from a hoop holding reel above the conveyor; This invention relates to an improvement of a bundling device for packaging using hoops, which includes a gripper device that grips the lower end of the hoop.

[Means for solving problems]

The present invention consists of the following technical means to achieve the above object.

(a) A movable frame that is movable in a direction perpendicular to the packaging material transfer direction is mounted on the gripper device.

(b) This movable frame has packing material skids that guide the frame.
The present invention includes: a guide plate that slightly moves the movable frame in a direction perpendicular to the packaging material transfer direction to align the centers of the movable frame and the skid; a hoop guide section that guides the widthwise sides of the hoop; and a hoop lock device.

(c) The hoop lock device consists of an almost upright tilting arm that comes into contact with the skid when the skid enters and presses the hoop by tilting in the skid's advancing direction, and a tilting arm that supports the back of the pressed hoop and tilts it. It includes a support elastic body that locks the hoop between the arm and the arm.

[Effect]

The operation of the device of the present invention will be explained.

An embodiment of the device of the present invention is shown in FIGS. 7 to 9. Since the device of the present invention is equipped with the above-mentioned technical means, it has the following effects.

That is, as shown in the vertical cross-sectional view in FIG.
It is mounted on the top via a slide bearing 31, and is movable together with the hoop 7 in the depth direction in FIG. A guide plate 30 is attached to this movable frame, as shown in the plan view in FIG. , when the skid 4 and the center do not coincide, the skid 4 pushes this side wall sideways so that the skid 4 and the center coincide with each other. At this time, the hoop grip of the gripper device 9 is released, and the hoop 7 is guided by the hoop guide section 32 shown in FIG. 9 and moves laterally together with the movable frame, so that the centers of the skid 4 and the hoop 7 also coincide. .

As shown in FIG. 9, the guide plate 30 is fixed to the movable frame 25, and guides the movable frame 25 by moving it in a direction perpendicular to the direction of movement of the skid (packing material transfer direction).

The hoop lock device 20 includes a tilting arm 21 and a hoop support elastic body 29, and while the skid 4 pushes the hoop 7 to pass through the binding device, the lower end of the hoop 7 is locked between the tilting arm 21 and the support elastic body 29, and the hoop 7 is locked between the tilting arm 21 and the support elastic body 29. Hold the skid so that it fits securely into the groove of the skid 4.

The tilting arm 21 is supported by a pin on a movable frame 25 and has a roller 22 on its top portion that fits into a groove on the lower surface of the skid 4. When the roller 22 hits the bottom of the groove on the lower surface of the skid 4, the tilting arm 21 tilts. At this time, the rollers 23 on the sides of the tilting arm 21 abut against the hoop 7 and press it laterally, locking the hoop 7 between it and the supporting elastic body 29 while the skid 4 passes.

In this way, the skid passes through the hoop with its center aligned with the groove of the skid 4. Therefore, even if the packaging material 1 enters in a state where the center line of the skid 4 and the center line of the hoop 7 do not match or are not parallel, the roller 22 of the tilting arm of the hoop lock device will not move while passing through the skid. Since the movable frame always fits into the groove of the skid 4 and the hoop 7 follows this, the hoop 7 is surely inserted into the groove.

The support elastic body 29 presses the back surface of the hoop 7 to lock and support the hoop 7 reliably and without generating excessive force even when there is a dimensional error in the skid.

Next, the present invention will be explained in more detail with reference to Examples.

〔Example〕

7 to 9 show embodiments of the present invention. 7th
The figure is an improved cross-sectional view of the present invention, which is the same view as the A--A arrow shown in FIG. 3 (FIG. 4) of the conventional device.

The binding device of the present invention has a gripper device 9 similar to the conventional device, and this gripper device 9 includes a screw shaft 14 rotated by a drive device 13 and a nut 15 screwed onto the screw shaft 14. The cylinder 10 is driven to rotate the eccentric roller 11 via the shaft 16 and key 17, and the hoop is placed between the rollers 11 and 12. It is designed to be gripped by pinching the lower end of 7.

The binding device of the present invention has a movable frame 25 on the frame 19 of the gripper device 9, and the movable frame 25 moves on the frame 19 via a slide bearing 31 in a direction perpendicular to the packaging material transfer direction (see FIG. 7). It is configured to be able to move slightly in the depth direction).

Furthermore, a guide plate 30 is fixed to the top end of the movable frame 25 for guiding the movable frame 25 to the skid 4, as shown in FIGS. 7 to 9.

As shown in the plan view in FIG. 8, the guide plates 30 are disposed on both sides of the advancing skid 4 so that the skid entry side widens at the end, so that the skid 4 is not misaligned with respect to the movable frame 25. Even if the skid 4 approaches with a curved and non-parallel arrangement, the skid 4 hits the side wall of the guide plate 30, and the movable frame 25 that fixedly supports the guide plate 30 moves slightly, causing the skid 4 and the movable frame 25 to automatically aligned.

The movable frame 25 also includes a hoop guide portion 2 that guides the lower surface of the hoop 7 when the band is hung.
8 (FIG. 7), and a hoop guide portion 32 (FIG. 9) that guides the side surface of the hoop 7 is fixed. When the skid 4 and the movable frame 25 are aligned, the hoop 7 is guided by this guide portion and accurately guided into the groove on the lower surface of the skid 4.

On the upper surface of the hoop guide part 28 that guides the lower surface of the hoop 7, a support elastic body 29 that elastically supports the hoop 7 is attached and urged toward the hoop side, as illustrated in FIG. 7, for example. . The supporting elastic body 29 is
Since the depth of the groove formed in the bottom surface of the skid 4 is not constant, it is necessary to always hold the hoop 7 between the roller 23 and the guide part 28 with a constant pressing force. This supporting elastic body 29 cooperates with a push roller 23 of a hoop lock device 20, which will be described later, to hold the hoop 7.
This serves to temporarily lock the lower end of the
For example, rubber, leaf springs, etc. are used.

A hoop lock device 20 is attached to the movable frame 25.
is installed. The hoop lock device 20 has an upright tilting arm 21 tiltably supported by a movable frame 25 via a pin 26, and an upper end of the tilting arm 21, as shown in FIG. It consists of a guide roller 22 that is rotatably supported on the side of the tilting arm 21, a push roller 23 that is rotatably supported on the side of the tilting arm 21, and a weight 24 that makes the tilting arm 21 stand upright. is being prevented. The guide roller 22 is located in the center of the two guide plates 30 mentioned above, rotates in the skid advancing direction (see Fig. 8), and slightly protrudes upward from the top surface of the conveyor 3, so that the skid 4 is connected to the guide plate. 3
When the skid 4 enters the gap between
tilt in the packaging material transfer direction. At this time, the push roller 23 supported on the side of the tilting arm 21 in the packaging material transfer direction presses the hoop 7 against the support elastic body 29, temporarily fixing the hoop 7 and performing hoop lock.

At this point, the lower end of the hoop 7 is not gripped by the eccentric roller 11 of the gripper device 9 and left open. When the guide plate 30 slightly moves the movable frame 25 in a direction perpendicular to the packaging material transfer direction, the hoop 7 moves slightly together with the movable frame 25 and is always accurately accommodated in the groove on the bottom surface of the skid 4.

In this way, the hoop 7 is reliably guided into the groove of the skid 4 while the packaging material is transferred. Immediately before the rear end of the skid 4 passes the guide roller 22,
The cylinder 10 is operated, and the lower end of the hoop 7 is sandwiched between the eccentric roller 11 and the fixed roller 12 and gripped by the grip device. This operation can be easily controlled using sensors such as phototubes or proximity switches. When the rear end of the skid 4 passes over the guide roller 22, the tilting arm 21 is automatically returned to the upright position by the weight 24, and the hoop lock device 20
hoop lock is released.

Thereafter, the hoop 7 is cut to an appropriate length and the packaging material is bundled as in the conventional method.

[Effect of idea]

The binding device of the present invention is constructed as described above, in which the skid 7 guides the movable frame with a guide plate to align the skid and the movable frame, and the hoop lock device controls the gripper device when the skid passes through the binding device. Since the hoop is held while the skid passes by opening and aligning the hoop with the skid, the hoop is reliably and accurately stored in the skid groove, and there is no mistake in hanging the band.

The present invention has a simple structure, can be manufactured at low cost, eliminates the need to monitor the banding, solves the problem of packaging materials coming undone during handling, and greatly contributes to improved efficiency, labor savings, and work safety.

[Brief explanation of the drawing]

Figure 1 is a diagram of how sheet materials are packaged, Figure 2 is a process diagram illustrating a packaging line, Figure 3 is a plan view of a binding device, and Figure 4 is a conventional binding device shown in the arrows A-A in Figure 3. 5 is an explanatory diagram of the banding process, FIG. 6 is a cross-sectional view of the skid, and FIG. 7 is an embodiment of the binding device of the present invention. is the seventh
9 is a view taken along the line C--C in FIG. 7, and FIG. 9 is a view taken along the line C--C in FIG. DESCRIPTION OF SYMBOLS 1... Sheet product, 2... Transfer machine, 3... Conveyor, 4... Skid, 5... Main plate, 6... Binding device, 7... Hoop, 8... Hoop holding reel,
9...Gripper device, 10...Cylinder, 11...
... Eccentric roller, 12 ... Fixed roller, 13 ... Drive device, 14 ... Screw shaft, 15 ... Nut, 16 ... Transmission shaft, 17 ... Sliding key, 19 ...
... frame of gripper device, 20 ... hooplock device, 21 ... tilting arm, 22 ... guide roller,
23... Push roller, 24... Weight, 25... Movable frame, 26... Pin, 27... Stopper,
28... Hoop guide section, 29... Support elastic body, 3
0...Guide plate, 31...Slide bearing, 3
2... Hoop guide section, D... Packing material transfer direction.

Claims (1)

[Scope of Claim for Utility Model Registration] A conveyor that places packaging materials on a skid whose longitudinal direction is oriented in the transport direction and transports the packing materials together with the skid, and a hoop hanging from a hoop holding reel disposed above the conveyor. , a binding device for packaging using a hoop, which comprises a gripper device located below the conveyor and gripping the lower end of the hoop, in which a movable frame that can be moved slightly in a direction perpendicular to the direction of transport of the packaging material is attached to the hoop; Mounted on the gripper device, the movable frame includes a guide plate that allows the skid of the packaging material to guide the movable frame and cause the movable frame to move slightly so that the centers of the movable frame and the skid coincide, and guide the sides in the width direction of the hoop. and a hoop lock device, the hoop lock device includes a tilting arm that contacts the skid and tilts to press the hoop when the skid enters, and a tilting arm that supports and tilts the back surface of the pressed hoop. A binding device characterized by comprising a support elastic body for locking a hoop between a tilting arm and a tilting arm.