JP6038627B2 - Press mounted on a cardboard bundling device - Google Patents

Description

  The present invention prevents a cardboard bundle from collapsing or being displaced in the process of wrapping a cardboard bundle around a cardboard bundle in which a predetermined number of cardboards are stacked and then binding the cardboard string in a bundling apparatus that stacks and bundles cardboards. Therefore, the present invention relates to a press for pressing a cardboard bundle from above.

When transporting or storing cardboard, multiple cardboards are stacked into one bundle (hereinafter referred to as a cardboard bundle), and the cardboard bundle is bundled with a packing string to improve transport efficiency and effectively use the storage location. Can be planned. Therefore, a bundling device for bundling cardboard bundles has been developed (for example, Patent Documents 1 and 2).
As shown in FIG. 3, the bundling devices disclosed in Patent Documents 1 and 2 wrap a cardboard bundle 1 around a cardboard bundle 1 in which cardboards are stacked, and further bind the baggage string 2 to bind the cardboard bundle 1. It is. In such a bundling device, a sufficient bundling force can be obtained if the stacked cardboard collapses (hereinafter referred to as load collapse) or the position of the cardboard bundle fluctuates (hereinafter referred to as displacement) in the process of binding the cardboard bundle. Such as damage to the cardboard or damage to the cardboard.

  In order to prevent such load collapse and misalignment during binding, conventionally, a press that presses the cardboard bundle from above is used. For example, in the bundling devices disclosed in Patent Documents 1 and 2, as shown in FIG. 4, a press having an air cylinder 3a and a pressing tool 4 is mounted. When bundling the cardboard bundle 1, the air cylinder 3a The presser 4 is lowered from above to hold the cardboard bundle 1, and when the binding is completed, the presser 4 is raised by the air cylinder 3a.

In the press shown in FIG. 4, the presser 4 is moved up and down only in the vertical direction by the air cylinder 3a. Therefore, the operations of the presser 4 and the air cylinder 3a in the series of processes for binding the cardboard bundle 1 are as follows.
That is,
(1) The cardboard bundle 1 is carried into a binding device and stopped at a predetermined position on the table 5.
(2) The presser 4 lowered by the air cylinder 3a presses the cardboard bundle 1.
(3) After wrapping the packing string 2 around the cardboard bundle 1, the packing string 2 is tied, and the packing string 2 is further cut.
(4) The knot of the packing string 2 formed on the lower side of the cardboard bundle 1 is moved to the side surface side of the cardboard bundle 1.
(5) The presser 4 is raised by the air cylinder 3a to release the cardboard bundle 1.
(6) After the process of unloading the cardboard bundle 1 from the bundling device, one cycle of bundling work by the bundling device is completed. The above (4) is a measure for preventing the depression of the cardboard due to the knot of the packing string when the bundled cardboard bundles are stacked.

  In order to shorten the time required for one cycle of such a binding device (hereinafter referred to as cycle time), the above processes (1) to (6) were examined in detail, and (5) to (6) It was found that the cycle time can be shortened by improving the operation of the press in the process. Moreover, it has been found that the improved process of pressing enables the process (4) to be performed at the same time, further reducing the cycle time.

  That is, the press attached to the conventional bundling apparatus has room for improvement from the viewpoint of shortening the cycle time of the bundling apparatus, that is, improving the processing capability.

Japanese Patent No. 4823158 Japanese Patent No.4823151

  An object of this invention is to provide the press which can improve the capability of the binding apparatus which binds a cardboard bundle.

The inventor studied paying attention to the operation of the presser constituting the press in order to improve the capacity of the binding device.
Since the pressing tool prevents the collapse of the load and the positional deviation by contacting and pressing the cardboard bundle, the function of moving the pressing tool in the vertical direction is indispensable. If the presser is improved and a function of moving in the horizontal direction is added, the above (5) and (6) can be performed simultaneously, and the cycle time can be shortened.

  Further, the cycle time can be further shortened by installing a gripping tool for gripping the packing string at a predetermined position on the table. In other words, if the actions of (5) and (6) are performed at the same time while holding the packing string tied in (3) above with the holding tool, the holding tool will not move. The string rotates around the cardboard bundle, and the knot can be moved to the side of the cardboard bundle. Therefore, not only (5) and (6) but also (4) can be performed simultaneously, and the cycle time can be further shortened.

The present invention has been made based on such knowledge.
That is, the present invention is a press which is mounted on a bundling device for bundling a plurality of corrugated cardboards and holds the corrugated cardboard bundles from above when bundling the corrugated cardboard bundles. , possess a slide rail disposed on the lower surface of the lifting device, a retainer which is movable horizontally along the slide rail, an air cylinder as a power source for moving the retainer, the lower surface of the retainer There is a press Ru and a horizontal step surface recessed groove from the horizontal abutment surface and the abutment surface for abutting the upper surface of the cardboard bundle.

  According to the present invention, the ability of the bundling device for bundling corrugated cardboard bundles can be greatly improved.

It is a front view which shows the example of the press of this invention typically. It is a side view which shows the pressing tool and lifting tool which comprise the press of FIG. It is a perspective view which shows typically the example which bound the cardboard bundle. It is a front view which shows the example of a binding apparatus typically.

FIG. 1 is a front view schematically showing an example of the press of the present invention. FIG. 2 is a side view showing a pressing tool and a lifting tool constituting the press.
The press of the present invention is used by being mounted on a conventional binding device as shown in FIG. The press of the present invention will be described below with reference to FIGS.
The press of the present invention has a lifting tool 6 that is movable in the vertical direction. The means for moving the lifting tool 6 in the vertical direction is not particularly limited, but it is preferable to use the air cylinder 3a because the lifting tool 6 can be lifted up and down simply and in a short time. Although it is possible to use a hydraulic cylinder or an electric motor, it is not preferable because it takes a long time to raise and lower the lifting tool 6. In particular, the hydraulic cylinder also has a problem that the corrugated board becomes dirty due to oil leakage.

A slide rail 7 is disposed on the lower surface of the lifting tool 6. The slide rail 7 is disposed in parallel and horizontally with the conveying direction of the cardboard bundle 1 shown in FIG. In addition, the conveying means for carrying the cardboard bundle 1 into the bundling apparatus and further carrying it out is not particularly limited, and conventionally known means (for example, a pusher, a conveying roller, a belt conveyor, etc.) is used.
The presser 4 is disposed so as to be movable along the slide rail 7. Therefore, the movement direction of the presser 4 is parallel and horizontal to the conveying direction of the cardboard bundle 1. An air cylinder 3b is used as a power source for moving the presser 4.

On the lower surface of the presser 4, a contact surface 4a and a step surface 4b are provided horizontally . In the process (2) described above, the air cylinder 3a lowers the lifting tool 6 from the standby position, so that the pressing tool 4 moves downward together with the lifting tool 6, and the contact surface 4a contacts the upper surface of the cardboard bundle. Touch. In this way, with the contact surface 4a of the presser 4 pressing the cardboard bundle, a gap is formed between the step surface 4b that is recessed from the contact surface in a groove shape and the upper surface of the cardboard bundle. This gap will be described later.

After the presser 4 presses the cardboard bundle, the packing string is wound, bound, and cut in the process (3) described above. As a result, the cardboard bundle is bundled as shown in FIG.
Subsequently, while the pressing tool 4 is pressing the cardboard bundle and the belt conveyor 9 is operated, the pressing tool 4 is moved horizontally in the conveying direction of the cardboard bundle by the air cylinder 3b. The lifting tool 6 is connected to the air cylinder 3a and is stationary at the lowered position. At this time, the packing string is stored in a gap formed between the step surface 4b and the upper surface of the cardboard bundle and is held by a holding tool (not shown) installed at a predetermined position on the table. Therefore, the packing string is rotated around the cardboard bundle without being restrained by the presser 4 as the cardboard bundle moves. In addition, since the contact surface 4a of the presser 4 is in contact with and pressed against the cardboard bundle, troubles such as the cardboard bundle floating from the table or the packing string coming off the gripping tool are prevented, and the packing string is securely rotated. Can be moved. As a result, the knot formed on the lower side of the cardboard bundle can be moved to the side surface side of the cardboard bundle.

In addition, by moving the presser 4 in the direction in which the cardboard bundle is transported, the cardboard bundle can be unloaded and the cardboard bundle can be unloaded in conjunction with the above-described process (6).
If the stroke of the air cylinder 3b is too short, the knot cannot move to the side of the cardboard bundle. On the other hand, if the stroke is too long, the effect of shortening the cycle time of the binding device is impaired. Therefore, the stroke of the air cylinder 3b is preferably 75 to 100 mm.

After the knot is moved to the side surface side of the cardboard bundle, the lifting tool 6 is raised by the air cylinder 3a, and the pressing tool 4 is returned to the standby position by the air cylinder 3b.
If the press of the present invention is used in this way, the above-described processes (4) to (6) can be performed simultaneously, so that the cycle time of the bundling device can be greatly shortened. In addition, since the bundling device binds the packing string 2 at two places with respect to one cardboard bundle 1 as shown in FIG. 3, two presses are arranged at two places on the left and right in the conveying direction of the cardboard bundle 1. It is preferable.

  If the distance between the contact surface 4a of the presser 4 at the standby position and the upper surface of the cardboard bundle is too short, the presser 4 and the cardboard may come into contact with each other when the cardboard bundle is carried in, which may impede loading. There is. On the other hand, if the distance is too long, the effect of shortening the cycle time of the binding device is impaired. Therefore, the distance between the contact surface 4a of the presser 4 and the upper surface of the cardboard bundle at the standby position is preferably 50 to 90 mm. Therefore, the stroke of the air cylinder 3a is preferably 100 mm.

  The height of the presser 4 at the standby position is adjusted using the height adjuster 8. The height adjustment is performed when the thickness of the cardboard or the number of cardboard bundles changes, so it does not occur frequently. Therefore, the structure which can hold | maintain the presser 4 and the raising / lowering tool 6 for a long time in the stand-by position which adjusted height is preferable. For example, a mechanism (so-called screw nut) that rotates a bar having a screw on its outer surface or adjusts the height by fixing the bar and rotating a nut is suitable.

The press of the present invention shown in FIGS. 1 and 2 was attached to the bundling apparatus shown in FIG. 4 to bind the cardboard bundle. The procedure will be described below. The distance between the contact surface 4a of the presser 4 and the upper surface of the cardboard bundle at the standby position (that is, the stroke of the air cylinder 3a) was 80 mm.
After the cardboard bundle 1 is carried into the binding device and stopped at a predetermined position on the table 5, the abutting surface 4a is operated by operating the air cylinder 3a and lowering the pressing tool 4 together with the lifting tool 6 from the standby position. Was brought into contact with the upper surface of the cardboard bundle 1. When the bundling device winds, binds, and cuts the packing string 2 and the bundling of the cardboard bundle 1 as shown in FIG. 3 is finished, the gripping tool (not shown) is installed at a predetermined position on the table. 2), the belt conveyor 9 is operated while the presser 4 is holding the cardboard bundle, and at the same time, the air cylinder 3b is operated to move the presser 4 in the direction of transporting the cardboard bundle. Moved horizontally. The stroke of the air cylinder 3b was 100 mm. At this time, the packing string 2 is accommodated in a gap formed between the stepped surface 4b of the presser 4 and the upper surface of the cardboard bundle 1, so that the cardboard bundle 1 is not restrained by the presser 4. Rotate the surroundings reliably.

In this way, the knot of the packing string 2 is moved to the side surface side of the cardboard bundle 1, and while starting to carry out the cardboard bundle 1, the lifting tool 6 is raised by the air cylinder 3a (that is, the pressing tool 4 is raised), and The presser 4 was returned to the standby position by 3b.
The time required for one cycle (that is, cycle time) averaged 1.5 seconds. That is, the bundling apparatus equipped with the press of the present invention has a processing capacity of 40 bundles per minute.

On the other hand, the conventional bundling device is equipped with a press in which the presser moves only in the vertical direction. The average cycle time was 1.7 seconds. That is, the processing capacity of the conventional bundling device was 35 bundles per minute.
As described above, the conventional processing capacity was 35 bundles / minute, but by attaching the press of the present invention, the capacity of the binding apparatus became 40 bundles / minute, a significant improvement of 14%. It was confirmed that it could be achieved.

1 Cardboard bundle 2 Packing string
3a Air cylinder
3b Air cylinder 4 Presser
4a Contact surface
4b Stepped surface 5 Table 6 Lifting tool 7 Slide rail 8 Height adjuster 9 Belt conveyor

Claims (1)

A press mounted on a bundling device for bundling a plurality of cardboard bundles to hold the cardboard bundle from above when bundling the cardboard bundle, and a vertically movable tool capable of moving vertically a slide rail disposed on the lower surface of the tool, possess a retainer that can be moved horizontally along the slide rail, an air cylinder as a power source for presser move the tool, a, of the retainer press the lower surface, characterized in Rukoto a groove on a horizontal step surface which is recessed from the abutting surface and the horizontal abutment surface for contact with the upper surface of the cardboard bundle.

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