JP2599860B2 - Molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a molding machine, in particular a roll of corrugated paper of a certain length, which is formed into a corrugated paper of the same length (i.e. said roll length), in particular a chevron.
An alternative relates to a molding machine that transforms into corrugated paper of another known shape, such as channels and flats.

[0002]

Molded corrugated paper is used in packaging to protect the exposed exterior surfaces of articles and is valued for its excellent cushioning against repeated impacts. Chevron corrugated paper, that is, a long one having a cross section of "L" shape (constituting a product itself or a part, hereinafter generically called a product)
Is typically used to protect the sides, especially corners, of square metal products during storage in warehouses and during transportation.
Because corrugated corrugated paper is usually formed from single-sided corrugated paper, the corrugated paper can be bent along a corrugated line.

Product packaging materials have a relatively short service life. Accordingly, the packaging material should be disposed of easily and preferably environmentally friendly after use, and more desirably, be made from renewable materials to limit the consumption of natural resources. Corrugated paper meets these needs because it is wood-based and is preferably made from recycled or recycled paper. However, users also desire a product packaging material that is consistent in shape and quality for repeatable performance during use and wear and does not significantly increase the cost of the packaged product. It is speculated that these additional requirements were one factor driving the widespread use of chevron corrugated paper with other packaging materials, typically competitive with petroleum-based packaging products such as polyethylene. To be done.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a molding machine for forming a roll of corrugated paper into a product for corners, wherein the forming angle is reduced without reducing the productivity of an operator. An object of the present invention is to provide a molding machine that allows greater accuracy to a part product. In particular, it is an object of the present invention to configure and position a double-headed molding machine in a predetermined manner so that another product can be removed and a new product can be used during the molding of one product of chevron corrugated board. By allowing the corrugated paper rolls to be inserted, a particular corrugated paper roll is present in the machine, reducing the normal forming cycle of a standard single-head press to increase machine productivity. The goal is to be able to double without compromising.

[0005]

Accordingly, according to one aspect of the present invention, there is provided a forming machine for transforming a roll of corrugated paper of a predetermined length into a molded corrugated paper of a predetermined length,
The first forming section and the corresponding first receiving device are relatively movable between an open state in which the roll of corrugated paper can be loaded on the receiving device and a closed state holding the roll of corrugated paper in its formed state. Further comprising a second forming part and a corresponding second receiving device, which are likewise relatively movable between the open and closed states after the relative movement of the first forming part and the receiving device. A molding machine is provided.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be further described by way of example with reference to the accompanying drawings, in which: FIG.

The machine is arranged to cooperate with an upper receptacle set-ie the first receptacle device 2a- and an upper molding part 1a which is arranged to cooperate with it and a lower receptacle set-ie the second receptacle device 2b-. And an upper molding portion 1b that is formed.

Each of the molding portions 1a and 1b has side surfaces 3 facing each other at a front edge 4 at an internal angle of 90 degrees.

In FIG. 1, the upper receptacle 2a is shown with the left side open and the right side substantially closed. That is, the machine may be comprised of such separate receptacles which are operated discontinuously, but usually the upper receptacles are all open at the same time as the lower receptacles are closed, and The reverse is done.

As best seen in FIG. 2, each receptacle 2a, 2b consists of two plates 5 interconnected to a pivot 6 and mounted on respective pivot links 7, which are illustrated. In the open state, i.e., in the open state, a single unit of corrugated paperboard of unit length, consisting of a corrugated paper with an adhesive applied along the top of its corrugation, is used. It is formed at an angle of about 180 degrees to receive and hold the roll 8 (FIG. 4).

The upper molding 1a is fixed to an end plate 10a (only one of which is shown), which end plate has a longitudinal slot 11 with a rack 12 respectively. Rack 1
A pinion 13a conductively engageable with 2 is mounted on a pinion shaft 14 and rotated by an electric motor 15a via an intermediate transmission chain 16. In an alternative configuration, another transmission device, such as a belt drive, can be used and the motor can also be directly coupled to the pinion.

Each end plate 10a has a pair of perforated bosses 20 which are slid over each fixed guide post 21, the perforated bosses 20 forming a linear bearing guide, and a rack and pinion drive. And combined with the close tolerance guide post 21 to ensure accurate and repetitive molding section movement, and this movement is relatively quiet, maintenance-free and energy efficient.

In operation, the forming part 12a is driven downwards from the position shown in FIG. 1—in this embodiment by counterclockwise rotation of the motor output shaft—and its leading edge 4 rests within an obtuse angle. Is engaged with a predetermined length of corrugated paper roll (such as roll 8 in FIG. 4). Subsequent downward movement of the forming part 1a then firstly slightly compresses the roll 8-in this embodiment at each end of the forming part 1a, 1b-and moves the gap stop 90 (FIG. 6/7) to the plate 5 Engage with. Of the molding part 1 and thus the gap stop 90
Subsequent downward movement of the plates 5 is accompanied by pivoting of the plates 5, and these are ultimately restrained by the stop 30 (Fig. 2/3). In this embodiment, the stopper 30 is set so that the closing angle of the receiving port is 90 degrees.
An alternative embodiment may be 85 degrees. In this constrained state, the forming part 1a and the plate 5 are rolled with a predetermined length of corrugated paper roll matching the width of the gap between the two-in this embodiment, a predetermined length of chevron corrugated paper 8
(FIG. 4). On the other hand, the corrugated paper roll of the predetermined length is secured between the molding section and the receiving port and is cold-worked with the adhesive between the corrugated layers, thereby securing the corrugated paper in the newly deformed state. .

While the upper molding portion 1a is driven downward, the lower molding portion 1b is set in a separated state (FIG. 2) in which a substantial gap is maintained between it and the receiving opening 2b. . This means that in parallel with the continuous squeezing of the roll 8 between the upper forming part 1a and the receiving port 2a, the formed corrugated cardboard having a predetermined length is taken out from the receiving port 2b, and a new corrugated cardboard is placed on the receiving port 2b. It is possible to mount a corrugated paper roll having a predetermined length in preparation for processing.

Thus, it will be appreciated that the closing movement of the upper molding and the receptacle takes place in tandem with the corresponding closing movement of the lower molding and the receptacle. Advantageously, they do not overlap while their respective movements are offset.

"Magic eye", ie, the photoelectric sensor is scanned into the gap between each molding and the receptacle, whereby the sensor beam penetrates into the gap of the careless operator during the closing movement. In the case where the molding is interrupted by the above, continuous downward movement of the molded portion can be prevented. Further, the "magic eye" can be scanned in the space between the receiving opening 2a and the molding portion 1b for the protection of the operator. A fourth "magic eye" could also be used on top of the molding 1a, but this gap could be more easily protected by sheet metal or equivalent mechanical protection.
It will be appreciated by those skilled in the art of operator protection that alternative sensors can be applied.

In this embodiment, by rotating the motor 15b in the reverse direction, the receiving opening 2b is returned to the open state and the lower molding portion 1b is raised (FIG. 6). The receiving port 2b is followed by the upward movement of the lower molding part 1b via the counterweight 40 supported by the arm 42 mounted on the pivot 44 and engaged with the lower surface of the receiving port. In alternative embodiments, other means may be used, for example chain drive by a motor. It will be understood that a similar counterweight (not shown) is also engaged in the receptacle 2a. The lower forming portion 1b is an end plate 1 driven upward and downward by a motor (FIG. 9) via a pinion 13b means.
It will also be appreciated that it is welded to Ob.

Each motor 15 during the ascent of each molding section
The stress of a, 15b is fixed to each molding part 1a, 1b via a weight 50-a pulley 52 rotatably mounted on the machine, and a chain 51 means that is hung around a pulley shaft 53. It is reduced by providing-.

In order to form a corrugated cardboard product having irregular legs, the spacer bar 60 is urged by the roll 8 to be eccentric by a required amount to a position located at the front edge of the formed portion. , The roll 8 can be held. Preferably, the continuous downward movement of the forming section causes the spacer bar to be swung out of contact with the roll 8. FIG.
As schematically shown in the embodiment of the invention, the spacer bar has a driven wheel 62 pivotally mounted on the molding at a position 61 and engaged with a cam 63 fixed to the machine frame. The spacer bar is weighted to swing back into position, preferably against the adjustable stop 64, when the molding is returned to the starting position of FIG. In the preferred embodiment of FIG. 5, the spacer bar is pivotally mounted on the machine frame at position 61a and the cam 63a includes a spacer
It is mounted on the forming part in a state where it is biased toward the stopper 64 through the line a, that is, in the clockwise direction in FIG.

The motors 15a and 15b are connected to a control panel 70
According to the time sequence and rotation direction, and in this embodiment stopped at the command of the operator. One forming part / slip slave device 71 has its forming part raised and open to remove and place the formed chevron and new roll, respectively.
On the other hand, in another molding part / receptacle subordinate device 72,
The closure is closed at a molding angle of 0 degrees and the co-forming part is lowered to clamp the corrugated cardboard in a predetermined manner in a gap formed between the molding part and the receptacle. Is in a state. The time between loading and subsequent removal of the workpiece is sufficient for proper cold working of the adhesive, so that the chevron corrugated product will continue after it has been removed from the machine Dimensional stability is reliably maintained during processing-for example processing and cutting.

One suitable use of the corrugated cardboard--typically having an internal angle of 90 degrees--is to protect the corners of rectangular articles such as central boilers. Four parts are arranged along each side, and they not only protect the corners-even after some impact-but also end load loading, i.e. shear. And thus allows for double or triple stacking, improving warehouse space utilization and eliminating racking. Therefore, as shown in FIG.
Is protected by a component 42 made of a mountain corrugated cardboard having an L-section, which is held by a strap 43 or an outer wrapping (not shown). In this embodiment, the component 42
Are each made up of multi-ply corrugated cardboard formed at an internal angle of 90 degrees. In addition, these parts 42
Can be similarly applied to not only the side portion 40 but also the horizontal top portion and the bottom corner portion, if necessary.

The chevron component 42 is typically cut from an elongate product formed as described above, but due to its intended use and precise cutting process, may also be done by the supplier on site. Also in the above, the molded product must be dimensionally stabilized by appropriately cold working the adhesive during molding.

The above-mentioned "double-headed" machine does not unduly cause operator fatigue, that is, the upper and lower receptacles are set at appropriate heights, and it is necessary to squat down and stretch out. Avoided. The machine's narrow width eliminates the floor space required by two "single-headed" machines. A pair of precisely grounded and fixed guide rods are shared by both the upper and lower moldings, resulting in cost savings and more efficient and controlled operation. The plain bearings can easily be kept lubricated. The control panel 70 is under operator control, but in an alternative embodiment, to prevent premature opening of the receptacle-i.e., Before the adhesive is completely cold-worked-to prevent rise and release. A delay device may be included. Alternatively, the cycle time is completely preset for automatic operation. The rack and pinion, like the cooperating motor, are at the top of one molding and at the bottom of another molding. The rotation of the motor can be set to avoid the rack being fed. The guide rod 21 common to both the upper and lower slaves 71 and 72 can be accurately positioned before being fixed to the cross struts 102 of the machine frame 100.

[0024]

According to the molding machine of the present invention, the molding machine comprises a molding machine for molding a corrugated paper roll into a product for a corner portion, and the molded corner portion product has a higher precision without reducing the productivity of the operator. Can be tolerated. In particular, according to the molding machine of the present invention, a double-headed molding machine is configured and arranged so that another product is removed and a new product is formed while forming one product of the corrugated corrugated paper. The normal forming cycle of a standard single-head molding machine is reduced by allowing a particular cardboard roll to be present in the machine by allowing the cardboard paper roll to be inserted. It is possible to make the doubling possible without impairing the performance.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing an upper receiving opening of a molding machine according to the present invention in an open state and a closed state, respectively.

FIG. 2 is an end view showing a state in which the shaft bearing opening of the machine shown in FIG. 1 is in an open state, that is, a mounted state.

FIG. 3 is an end view of the shaft receiving port of the machine shown in FIG. 1 in a closed state and a state where corrugated paper is formed into a mountain-shaped product.

FIG. 4 is an end view showing a state in which the bearing port of the machine shown in FIG. 1 is in an open state and holds a new roll of paper deviated from the center line of the bearing port.

5 is an end view showing another embodiment of the embodiment shown in FIG. 4. FIG.

FIG. 6 is a partial end view showing a molding portion and a gap stopper.

FIG. 7 is a partial end view corresponding to FIG. 6, showing a state in which the molding unit is in the closed position.

FIG. 8 is a perspective view showing a “boiler package” in which four side edge portions of the boiler are protected by a mountain-shaped product of corrugated paper.

FIG. 9 is a schematic diagram showing a machine and its controls.

[Explanation of symbols]

 1a, 1b Molded part 2a, 2b Receptacle (device) 3 Side surface 4 Front edge 5 Plate 6 Pivot 7 Swing link 8 Corrugated paper roll 10a End plate 11 Vertical slot 12 Rack 13a, 13b Pinion 14 Pinion shaft 15a, 15b Electric motor 16 Intermediate Conduction Chain 20 Hole Boss 21 Guide Post (Rod) 30 Stopper 40 Balance Weight 41 Boiler 42 Arm 43 Strap 44 Pivot 50 Weight 51 Chain 52 Pulley 53 Pulley Shaft 60 Spacer Bar 61, 61a Position 62 Driven Vehicle 62a Spring 63, 63a Cam 64 Stop 70 Control panel 71, 72 Molding part / receptacle dependent device 90 Gap stop 100 Frame 102 Cross strut

Claims (8)

(57) [Claims] 1. A roll of corrugated paper having a predetermined length is rolled to a predetermined length.
A molding machine that transforms into a corrugated cardboard that has been molded,
The first forming part and the corresponding first receiving device are made of cardboard;
Open and corrugated paper rolls that can be loaded on the receiving device
The roll of roll paper in its closed state
Between the second molding part and the corresponding second molding part.
A second receiving device, which is open and closed.
The relative movement of the first molding part and the receiving device between the chain states.
A molding machine which is also capable of relative movement after movement . 2. A roll of corrugated paper having a predetermined length is placed in the same place.
A molding machine that transforms into a fixed length of corrugated cardboard.
Thus, the first forming part is, for the corresponding first receiving device,
An open condition that allows a roll of corrugated paper to be loaded onto the receiving device
From the closed state to hold the roll of corrugated paper in its molded state.
It is possible to move downward to the chain state, and further to the second molding part.
And a corresponding second receiving device, and the second molding part is opened.
A first molded part and a receiving device are provided between the released state and the closed state.
A molding machine characterized by being movable downward after a relative movement of the apparatus. 3. The molding machine according to claim 2, wherein the first and second molding parts are arranged by a common guide post. 4. A first and a second rack and a pinion between the open and closed states of the first and second molded parts.
3. The first and second racks, each driven by an automatic means , each have a boss slidable on the guide post.
The molding machine described. 5. The first and second molding parts are respectively disposed between the upper and the second molding parts during their open and closed states .
2 Driven by an electric motor located at the bottom of the receiving device
And the motor is activated in a time sequence
Molding machine according to claim 2, wherein that. 6. A respective counterweight, wherein the first and second forming portions are arranged to urge the forming portion to its open state .
Forming machine of claim 2, wherein the respectively connected to Ri. 7. A receiving device comprising : a first receiving device and a second receiving device;
Coupled to each counterweight that biases the
The molding machine according to claim 2, wherein the mouth is caused to follow the upward movement toward the open state . 8. The apparatus according to claim 1, wherein the first and second receiving devices are each one.
It consists of a pair of pivot plates, and each space
Suburbs project into the gap between the molding and cooperating plate
This allows the roll to be
The molding machine according to claim 2, wherein the molding machine is held while being deviated from the center before being sandwiched and pressed .