JPH072384B2 - Method and apparatus for separating molding part and scrap part - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for separating a molding section and a scrap section and an apparatus therefor, which are used for manufacturing paper products such as a corrugated board and a paper box.

Conventional technology When manufacturing paper products such as paper boxes, first, the base paper (paperboard) is sent to the mold part by the feeder, and there are creases for making creases, and the forming part and the scrap part are separated. To form cuts and joints.

Next, the base paper is sent to a separating device, where the joints are cut to separate the molding part and the scrap part.

The conventional separating device includes a lower die that supports the scrap portion and an upper die that presses the molding portion.

Then, the base paper conveyed one by one on the upper surface of the lower mold is pressed by the upper mold to drop the molding part from the concave portion, thereby separating the molding part and the scrap part of the base paper.

Conventionally, the upper and lower molds have been formed of molds in view of the need for strength.

However, in the case of a small number of paper products, since the number of times of using the mold is small, using a mold whose production cost is high makes it economically unprofitable and the unit price of the paper product is also high.

Therefore, in order to solve the above problem, a method of forming an upper mold and a lower mold at the same time by cutting one veneer plate with a laser beam in accordance with the shape of the molding portion of the base paper is used. .

(See Japanese Patent Application No. 216916 in 1983) Problems to be Solved by the Invention In the upper mold and the lower mold formed of the veneer plate, a large load is not applied to the mold when separating the molding part and the scrap part one by one. Therefore, the problem of strength does not occur.

However, in order to perform the separating operation efficiently, it is necessary to stack a large number of base papers on the lower mold and simultaneously separate the molding section and the scrap section.

However, when a large number of sheets are separated at the same time, a large concentrated stress is generated in the mold.

As a result, the mold made of veneer plate, which is weak in strength, is damaged. In particular, in order to prevent waste of the base paper, the waste boundary portion between the forming portions is formed narrow, so that the lower die boundary portion corresponding to the waste boundary portion is particularly thin.

Therefore, this boundary portion is in a state of being easily damaged.

Therefore, in order to solve the above problem, a method of adhering a veneer plate to the lower surface of the lower mold to reinforce the mold can be considered.

However, when the lower die and the veneer plate are superposed in this manner, the molding part is prevented from falling by the veneer plate when the molding part and the scrap part are separated.

Therefore, it is possible to separate only the number of base papers corresponding to the thickness of the lower mold, for example, 30 mm.

Therefore, it is impossible to separate a large number of sheets, for example, 50 to 100 sheets, into a molding section and a scrap section at once.

SUMMARY OF THE INVENTION In view of the above circumstances, an object of the present invention is to make it possible to use a mold having low strength when simultaneously separating a large number of laminated base papers into a molding section and a scrap section.

Another object is to provide a molding part and scrap separating device which is easy to manufacture and economical.

Means for Solving the Problem The present invention includes a step of abutting an auxiliary support plate disposed on the back surface side of a female mold facing a male mold to the back surface of the female mold; for separating a molding portion and a scrap portion. A step of conveying a base paper on which a plurality of cuts are formed and stacked on each other, onto the female mold to make the molding portion correspond to the concave portion of the female mold; and lowering the male mold to press the molding portion of the base paper. And dropping the inside of the concave portion of the female die to stack it on the auxiliary support plate; and separating the auxiliary support plate from the female die and applying a pressing force to the male die again. It is intended to achieve the above object.

Action In advance, a joint and a cut are made in the base paper to divide the molding portion and the scrap portion, and a large number of the base paper are laminated on the female mold. At this time, the female mold is held and reinforced by the auxiliary support plate.

In this state, when the molding portion is pressed by the male mold, the joint is cut by the shearing force, and the base paper is
It is separated into a molding part and a scrap part. The lowermost molded portion is pressed against the upper surface of the auxiliary support plate, so that it does not drop further.

At this time, when the auxiliary support plate is separated from the female mold, the falling obstacle is removed. Therefore, when pressing force is applied to the male mold again,
Since the remaining molding portion falls, a large number of laminated base papers are simultaneously separated into a molding portion and a scrap portion.

Embodiments Embodiments of the present invention will be described with reference to the accompanying drawings, and the same reference numerals have the same names and functions.

A single flat plate, for example, a 30 mm-thick veneer plate 10 is irradiated with a laser beam to form parts (product) 12a to 12c of a base paper (paperboard) 11.
Cut to correspond to the male mold 13 and the third mold shown in FIG.
The female mold 14 shown in the figure is simultaneously formed.

Therefore, the male mold 13 is formed with three convex portions 13a to 13c, and the female mold 14 is formed with three concave portions 14a to 14c.

As shown in FIG. 4, in order to reduce the scrap portion 20 of the paper board 11, the boundary scrap portions 20a and 20b between the adjacent forming portions 12a to 12c are
It is thinly formed.

Therefore, the boundary portion 15a of the female mold 14 corresponding to the boundary waste portion 20a,
15b is extremely thin and its strength is weak.

The female die 14 is fixed to the mount 17, and an auxiliary support plate 19 is superposed on the lower surface of the female die 14 so as to be vertically movable.

The auxiliary support plate 19 is formed of, for example, a square veneer plate having a thickness of 30 mm, and a vertical movement device 29 is connected to the lower surface thereof.

The male die (13) is fixed to the mounting base (21), and the respective convex portions (13a-13c) are made to correspond to the respective concave portions (14a-14c) of the female die (14). Cuts (11a) and joints (11b) are formed on the paperboard (11) to separate the molding parts (12a-12c) and the scrap parts (20).

Then, a large number of this paperboard 11, for example, 100 sheets are laminated,
It is carried to the supply space 25 of the molding section and moved to a predetermined position on the female mold 14. Next, the male die 13 is operated, and when the cam 100 is rotated by a power source (not shown), the male die 13 rotates the cam follower 102 supported by the support shaft 101 to slide the rod 103 in the vertical direction.

When the rod 103 slides, the first crank 105 supported by the shaft 104 rotates to slide the rod 106 in the vertical direction, and at the same time, the connecting rod 107 slides in the horizontal direction and is supported by the shaft 108. Rotate the second crank 109,
Slide the rod 110 vertically.

Therefore, the mounting base supported by the rods 106 and 110
Since the 21 slides in the vertical direction, the male die 13 moves up and down.

The cam 100 is operated to lower the mount 21 in the direction of arrow A21, and the male molds 13a to 13c press the molding portions 12a to 12c of the paper board 11. At this time, the male mold 13b is in a state as shown in FIG.

Further, when the male dies 13a to 13c descend in the direction of arrow A21, a large shearing force is applied to the joint 11b, and the joint 11b is cut from there.

Therefore, as shown in FIG. 6, the molding portion 12 and the scrap portion 20 are separated, and the molding portions 12a to 12c in the lowermost layer fall into the recesses 14a to 14c. When this shearing force acts, the female dies 14a to 14c also exert the greatest force, but since they are reinforced by the auxiliary support plate 19, the female dies 14a to 14c are not damaged.

Further, when the male molds 13a to 13c descend in the direction of the arrow A21, the lowermost molding portions 12a to 12c are pressed against the upper surface of the auxiliary support plate 19 to be in a state as shown in FIG. Department
It is impossible to drop 12a to 12c.

In this state, the vertical movement device 29 operates and the auxiliary support plate
Slide 19 in the direction of arrow A20 to separate it from the female mold 14.

Therefore, since there is no drop obstacle, when the male die 13 is pressed again in the direction of the arrow A21, the molding portion 12a as shown in FIG.
.About.12c fall through the recesses 14a to 14c and are accumulated on the accumulating device 27 as shown in FIG.

When removing the auxiliary support plate 19, the molding parts 12a to 12c
Since the scrap part 20 and the scrap part 20 are separated, even if the molding parts 12a to 12c are pressed by the male molds 13a to 13c, little force is applied to the female mold 14. Therefore, the female mold 14 is not damaged.

The embodiment of the present invention is not limited to the above,
For example, the state of FIG. 7, that is, the auxiliary support plate 19 and the male type
From the state where the base paper is sandwiched by 13, the male mold 13 and the auxiliary support plate 19 are moved in the arrow A13 direction and the arrow A19 direction to the state shown in FIG. 10, and further moved in the same direction to move the 11th direction. The molding portion and the scrap portion may be separated in the state shown in the drawing.

In this case, since the separating operation is performed while the molding section 12 is sandwiched between the male mold 13 and the auxiliary support plate 19, the molding section after separation maintains the aligned state.

Further, as shown in FIG. 12, the female mold 14 may be connected to the vertical movement device 30.

In this case, the female mold 14 is superposed on the auxiliary support plate 19,
The cardboard 11 laminated on the 14 is conveyed.

Then, the base paper 11 is pressed by male molds 13a to 13c, the lowermost molding portions 12a to 12c are pressed against the upper surface of the auxiliary support plate 19, and in this state, the vertical movement device 30 is operated, and the female mold 14 is indicated by an arrow. A3
Move in the 0 direction to the state shown in FIG. 13, and further move the female mold 14 in the same direction to show the state 14 indicated by the chain line, that is, the 14th state.
In the state shown in the figure, molding parts 12a-12c while so-called squeezing
And the scrap 20 are separated.

As shown in FIG. 15, the hydraulic devices 150, 15 are attached to the male molds 13a to 13c.
1, 152 are connected, female dies 14a to 14c are provided above them, and an auxiliary support plate 19 is superposed on the upper surfaces of the female dies 14a to 14c.
The vertical movement mechanism 41 may be connected to 19.

In this case, after supplying the base paper 11 laminated on the male molds 13a to 13c, the male molds 13a to 13c are pushed up in the direction of the arrow A13 so that the uppermost molding portions 12a to 12c are placed on the lower surface of the auxiliary support plate 19. Press it.

Thereafter, as shown in FIG. 16, by operating the vertical movement mechanism 41, the auxiliary support plate 19 is moved in the direction of arrow A19 to be in the state 19 shown by the chain line, and further, as shown in FIG. 17,
The male molds 13a to 13c are moved in the A13 direction to separate the molding parts 12a to 12c and the scrap part 20.

In this case, instead of connecting the vertical movement device to the auxiliary support plate 19, as shown in FIG. 18, a horizontal sliding device 26 is connected and the auxiliary support plate 19 is moved in the horizontal direction so that Needless to say, the contact and separation may be performed.

Even if the female mold 14 is moved in the direction opposite to the arrow A19 while the base paper 11 is held between the male molds 13a to 13c and the auxiliary support plate 19 without operating the vertical movement mechanism 41, the molding portion 12a to The 12c and the scrap 20 can be separated.

EFFECTS OF THE INVENTION Since the present invention is configured as described above, when the maximum stress is generated in the female mold, that is, when the joint is cut by the shearing force and the molding part and the scrap part are separated, the female mold is Are reinforced by the auxiliary support plate.

Therefore, the female mold is not damaged even if a large number of cardboards are simultaneously separated into a molding section and a scrap section.

Further, after the molding part and the scrap part are separated, no large stress is generated in the female mold, so even if the auxiliary support plate and the female mold are separated and the molding part is completely separated from the scrap part, the female mold is damaged. There is nothing to do.

A method for separating a molding portion and a scrap portion and an apparatus therefor according to the present invention,
Since male and female molds made of plywood etc. can be used,
It is both easy to manufacture and economical.

[Brief description of drawings]

1 to 18 are views showing an embodiment of the present invention.
The figure is a joint sectional view showing a use state, FIG. 2 is an enlarged perspective view showing the male mold of FIG. 1, FIG. 3 is an enlarged perspective view showing the female mold of FIG. 1, and FIG. 5 is a perspective view showing the base paper of FIG.
FIG. 9 to FIG. 9 are enlarged cross-sectional views showing the changed state of the main part of FIG. 1, FIG. 10 is an enlarged sectional view showing the changed state of the main part of another embodiment, and FIG. Fig. 10 is an enlarged sectional view showing another state of Fig. 10, Fig. 12 is a longitudinal sectional view showing a case where a vertical movement device is connected to a female mold, and Figs. 13 and 14 are changes in the main parts of Fig. 12, respectively. FIG. 15 is an enlarged sectional view showing a state, FIG. 15 is a longitudinal sectional view showing a case where a female die is arranged above a male die, FIG. 16 is a longitudinal sectional view showing a changed state of FIG. 15, and FIG. FIG. 18 is an enlarged cross-sectional view showing a changed state of a main part of FIG. 15, and FIG. 18 is a perspective view showing a state in which a horizontal sliding device is connected to the auxiliary support plate. 11 …… Base paper 12a ～ 12c …… Molding part 13 …… Male 13a ～ 13c …… Projection 14 …… Female 14a ～ 14c… Concave 19 …… Auxiliary support plate 20 …… Scrap

Claims (6)

[Claims] 1. A step of abutting an auxiliary support plate disposed on the back surface side of a female die facing the male die to the back surface of the female die; cuts for separating a molding portion and a scrap portion are formed, And a step of transporting a large number of laminated base papers onto the female mold to make the molding portion correspond to the concave portion of the female mold; and lowering the male mold to press the molding portion of the base paper to form the concave portion of the female mold. A step of dropping the inside of the auxiliary support plate to stack it on the auxiliary support plate; a step of separating the auxiliary support plate from the female mold and applying a pressing force to the male mold again; . 2. The method for separating a molding part and a scrap part according to claim 1, wherein the auxiliary support plate moves in the vertical direction to contact and separate from the female mold. 3. A step of abutting an auxiliary support plate disposed on the back surface side of the female die opposite to the male die to the back surface of the female die; cuts for dividing the molding portion and the scrap portion are formed. And a step of transporting a large number of laminated base papers onto the female mold to make the molding part and the female mold correspond to each other; in the concave part of the female mold by lowering the male mold and pressing the molding part of the base paper. And dropping the film onto the auxiliary support plate to sandwich it between the auxiliary support plate and the male mold while sandwiching the forming part laminated on the auxiliary support plate and the forming part of the base paper on the female mold. And a step of separating the auxiliary support plate from the female mold while applying a pressing force to the mold again. 4. A step of abutting an auxiliary support plate disposed on the back surface side of the female die facing the male die to the back surface of the female die; cuts for separating the molding portion and the scrap portion are formed. And a step of transporting a large number of laminated base papers onto the female mold to make the molding portion correspond to the concave portion of the female mold; and lowering the male mold to press the molding portion of the raw paper to form the female concave portion. A step of dropping the inside and laminating on the auxiliary supporting plate; a step of sandwiching the forming part laminated on the auxiliary supporting plate by the auxiliary supporting plate and the male mold with the forming part of the base paper on the female mold; A step of sliding the female die toward the male die; and 5. A female die on which a stencil for forming a cut portion and a scrap portion is formed and on which a large number of laminated base papers are placed,
In a separating device for a molding section and a scrap section, in which the female mold and a vertically movable male mold facing each other through a feed space for the base paper are provided, an auxiliary support plate that can be contacted and separated from the back side of the female mold is provided, A separating device for a molding part and a scrap part, wherein the auxiliary support plate is brought into contact with the back surface of the female mold to reinforce the strength of the female mold. 6. The separating device for a molding part and a scrap part according to claim 5, wherein the female mold and the male mold are formed from one veneer plate.