JPH08258012A - Rotary cutter for thin board - Google Patents

Abstract

PURPOSE: To attempt extreme improvement of process efficiency in a thin board- cutting process by providing compact persistent equipment which is excellent in coping with high speed and maintainability. CONSTITUTION: A pair of upper and lower rotary anvils 6a, 6b and upper and lower respective pair of rotary knives 7a, 70a, 7b, 70b which pivot on an outer periphery part of the rotary anvils 6a, 6b, are mounted coaxially. After cutting automatically a front and a rear of a bad position to be separated by cutting of a thin board 1 in a carrying process by one action, automatic separation of chips 8 and delivery of products 4 are facilitated to constitute a rotary cutter having composite performance for cutting, separation, and delivery.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is mainly used for cutting thin plates in the field of plywood manufacturing and the like, and is not continuous in the form of strips cut by a single plate cutting device such as veneer lace or veneer slicer. Before and after an edge veneer with an irregular edge, and before and after a defective part of a thin plate such as a strip-shaped continuous veneer that has a defective part to be separated such as a crack or a knot hole At the same time, the present invention relates to a thin plate rotary cutting machine in which chips resulting from the cutting are separated to the outside of the machine and the product is delivered to a subsequent stage.

[0002]

2. Description of the Related Art As a conventional rotary cutting machine for this kind of thin plate, for example, a high speed cutting device for sheet materials such as Japanese Patent Publication No. 53-26350 veneer veneer, and a single piece of scrap in a size rotary clipper of Japanese Patent Publication No. 54-11023. Prior art rotary cutting machines for thin plates are known, which are equipped with a rotating knife and rotating roll and a rotating anvil, such as a plate removing device.

[0003]

In the conventional rotary cutting machine for thin plates described above, a rotary knife having a rotary roll having a unitary structure is used as a main body, and a rotary anvil and a rotary anvil face each other. Since it is a rotary cutting machine with only a single cutting function, the former device which becomes the above-mentioned conventional technology cannot automatically separate chips after automatically cutting a thin plate,
In addition, the latter device eliminates the complicated structure in which a specially equipped intermittent drive device, reciprocating mechanism, single plate guide, etc. are connected in multiple stages in order to automatically separate chips after automatically cutting thin plates. It was necessary to install auxiliary equipment such as equipment, and in any of the above-mentioned equipment, the former simply cuts the thin plate into a sized width etc. during the transportation process, and the former cuts the chips generated by the automatic cutting. It lacks the function of automatically separating it outside the machine immediately during the transportation process, and the latter requires auxiliary equipment for automatic separation of chips, so it lacks high-speed compatibility and maintainability, and therefore the overall function. However, there were some problems such as low process efficiency.

Therefore, according to the present invention, in order to eliminate the drawbacks of the conventional apparatus, a pair of upper and lower rotating anvils and a pair of upper and lower rotating knives for rotating the outer peripheral portion of the rotating anvil are coaxially mounted. High-speed cutting by configuring a rotary cutting machine with a composite cutting / separating / delivering function that enables automatic separation of chips and automatic delivery of products after automatically cutting the front and back of the defective part to be separated in one movement in a single operation The purpose is to improve the process efficiency in the thin plate cutting process by making the equipment simple and robust with excellent adaptability and maintainability.

[0005]

In order to achieve the above-mentioned object, the present invention has the following specific invention.

A. Carry-in and carry-out conveyor that conveys thin plates continuously or intermittently.

B. A pair of upper and lower rotating anvils arranged at the connecting portions of the carry-in and carry-out conveyors.

C. The outer peripheral portion of each of the rotary anvils is rotatably rotatable, and upper and lower blade edges abut on each of the rotary anvils to cut the thin plate in the conveying process and cut the front and rear of a defective portion to be separated. A pair of upper and lower rotating knives installed side by side at the connection part of the carry-in and carry-out conveyors so that they can be separated to the outside and delivered to the subsequent stage of the product. A rotary cutting machine for thin plates.

A subordinate invention of the present invention is constructed as follows.

A. A linked drive mechanism in which a pair of upper and lower rotating anvils are vertically connected and continuously driven.

B. An intermittent drive mechanism in which a pair of upper and lower rotary knives are axially mounted so that braking can be intermittently stopped at rotation stop positions set on the thin plate loading side and the thin plate unloading side, respectively.

C. A knife mounting mechanism in which a pair of upper and lower rotating knives are formed on a single or a plurality of blades.

[0013]

In the thin plate rotary cutting machine according to the present invention, a pair of upper and lower rotary anvils and a pair of upper and lower rotary knives for rotating the outer peripheral portions of the rotary anvils are coaxially mounted, and the thin plate in the carrying process is conveyed. Since it is configured to automatically cut chips and automatically deliver products after a single behavior before and after the defective part to be cut and separated, it is necessary to cut and separate thin plates carried in by a carry-in conveyor. The front part of the defective part is automatically detected by a thin plate detector such as a limit switch, and the detection signal is used to brake and stop at the stop position on the thin plate loading side. By cutting the thin plate in the conveying process by abutting the blade edge, the front part of the defective part to be separated is automatically cut like a push-cut, and the lower rotary knife is used to stop the braking at the stop position on the thin plate unloading side. Off By the automatic separating operation of the sheet to the outside of the machine and the automatic delivery operation of the product to the succeeding unloading conveyor by the rotation of the upper rotary knife on the sheet unloading side, the front part of the defective portion to be cut and separated in the above-mentioned carrying process The work of cutting a finite width, the work of separating chips to the outside of the machine, and the work of delivering the product to the subsequent stage are completed in one action. Next, the rear portion of the defective portion to be cut and separated of the thin plate containing the product that is being continuously conveyed by the carry-in and carry-out conveyor is also automatically detected by the thin plate detector, and the detection position of the thin plate carry-in side is determined by the detection signal. The upper rotary knife that is braked and stopped is activated to bring the blade edge into contact with the lower rotary anvil that is constantly rotating to cut the thin plate containing the product in the conveying process and press the rear part of the defective part to be separated. Automatic cutting, and by the operation of automatically separating the chips outside the machine by the rotation of the lower rotary knife on the thin plate unloading side, the thin plate including the product in the conveying process is cut and separated. The cutting work and the separation work of the chips to the outside of the machine are automatically completed in one movement, which contributes to a great improvement in the process efficiency in the cutting process of the thin plate.

[0014]

1 and 2 are a side view and a front view of a rotary cutting machine for thin plates, which illustrates the structure of the present invention, and a veneer veneer having irregular ends to be cut and separated and defective portions in the material. A thin plate 1 such as is conveyed continuously or intermittently by a carry-in conveyor 2 and is configured to automatically detect before and after a defective portion to be cut and separated by a thin plate detector 3 such as a limit switch during the conveying process. ing. In addition, the defective portion to be cut and separated is automatically detected by being detected in the transportation process, and the product 4 in which the chips are automatically separated out of the machine is delivered to the carry-out conveyor 5 so that the product 4 is continuously transported to the deposition device in the subsequent stage. Is configured. Next, a pair of upper and lower rotary anvils 6a and 6b are arranged at the connecting portion between the carry-in conveyor 2 and the carry-out conveyor 5, and a pair of upper and lower rotary knives, for example, as shown in the drawing, are provided on the outer peripheral portions of the rotary anvils 6a and 6b. The rotary knives 7a, 7b, 70a, 70b composed of a plurality of blades are coaxially mounted on the lower rotary knives 7b, 7b.
In the case of 0b, the blade edge thereof comes into contact with the upper rotary anvil 6a alternately to cut a defective portion in the front portion of the thin plate 1 in the conveying process in a push-cut manner, and also the upper rotary knives 7a, 7a.
In the case of 0a, the cutting edge is brought into contact with the lower rotating anvil 6b alternately to cut the defective portion at the rear part of the thin plate 1 in the conveying process, and then the cut product 4 and chips 8 are set on the thin plate unloading side. The rotating knives 7a, 70a, 7
By the braking / stopping operation corresponding to the rotation stop position of the blade portions of b and 70b, the product 4 delivers it to the carry-out conveyor 5, and the chip 8 discharges it to the outside of the machine to remove the product 4 and the chip 8. It is configured to sort automatically. In addition, the setting of the rotation stop position of the blade portion by the braking stop operation of the rotary knives 7a, 70a, 7b, 70b is performed at an appropriate place of the rotary knives 7a, 70a, 7b, 70b.
For example, rotational position detectors 9a, 90a, 9b, 90b, such as limit switches mounted in association with the drive shaft
And the intermittent drive mechanism 11a, 11b such as a servomotor axially mounted on the rotary knife 7a, 70a, 7b, 70b is automatically controlled by the control circuit 10 including a sequencer, etc. The rotary knives 7a, 70a, 7b, 70 set in each of the
It is configured so that the blade portion can be reliably braked and stopped at the rotation stop position of b, and the rotation anvils 6a, 6b are also provided.
In addition to vertically driving the rotating knives 6a and 6b, the rotating anvils 6a and 6b can be driven at a constant speed by a connecting drive mechanism 12 such as a motor mounted in parallel. Each of 7a, 70a, 7b, and 70b is formed into a knife mounting mechanism composed of a single blade blade or a plurality of blade portions (illustration example), so that a single piece of equipment as a rotary cutting machine can be economically simplified and cut by a plurality of pieces of equipment. It is configured so that the speed of the function can be arbitrarily increased.

Next, FIGS. 3 to 6 are side views schematically showing an operating mode of the rotary cutting machine for thin plates composed of the plurality of blade portions of the present invention which constitutes the present invention, and FIG. It shows a state in which the front part of the defective portion to be cut and separated of the thin plate 1 is cut like a push-cut by the lower rotary knife 7b and the upper rotary anvil 6a, and the lower rotary knife 7b in FIG. When the rotary knife 7b rotates like the lower rotary knife 7b in FIG. 4 and is braked and stopped at the rotation stop position on the unloading side, the front part of the defective portion of the thin plate 1 is a chip 8.
Is discharged to the outside of the machine, the thin plate 1 and the chips 8 are automatically separated, and the remaining product 4 is guided directly to the carry-out conveyor 5 by the blade portion of the rotary knife 7b and safely delivered to the subsequent stage. It is configured to be. Further, FIG. 5 shows a state in which a defective portion remaining at the rear of the product 4 delivered on the carry-out conveyor 5 to be cut and separated is cut like a push-cut by the upper rotary knife 7a and the lower rotary anvil 6b. 5 and FIG. 6 in which the upper rotary knife 7a and the lower rotary knife 7b in FIG. 5 rotate, the rear portion of the defective portion of the product 4 in the process of rotating the rotary knives 7a and 7b in FIG. Are discharged to the outside of the machine as chips 8, and the products 4 and chips 8 are automatically sorted, and the products 4 sorted from the chips 8 are continuously carried out by the conveyor 5
Is configured to be conveyed as it is to a subsequent deposition apparatus or the like.

[0016]

As described above, according to the present invention, a pair of upper and lower rotary anvils and a pair of upper and lower rotary knives for rotating the outer peripheral portion of the rotary anvil are coaxially mounted on the same axis in the carrying process. The present invention is configured as a rotary cutting machine having a composite cutting / separating / delivering function that enables automatic separation of chips and automatic delivery of products after automatically cutting before and after a defective portion to be cut and separated in a single motion in the present invention. In the case of, the thin plate automatically generated by the rotary cutting machine with a single cutting function, which is a conventional technology, in which a rotary knife equipped with a rotary roller with a single cutting structure and a rotary anvil are only facing each other up and down. It is not possible to automatically separate the chips after cutting, and in order to perform this automatic separation of chips, a specially equipped intermittent drive device, reciprocating motion mechanism, single plate guide, etc. are connected in a multi-stage complicated structure. Auxiliary equipment such as exclusion device Are those was necessary to features a, generally, automatic separation function of the chip, and its high-speed responsiveness,
It was able to overcome the difficulties of conventional equipment that lacked overall process efficiency and equipment maintainability, and the completion of the present invention led to the start of a simple and robust rotary cutting machine with excellent high-speed compatibility. It is possible to reliably improve the process efficiency of the thin plate cutting process.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a main part.

FIG. 2 is a front view showing an embodiment of a main part.

FIG. 3 is a side view showing a cutting mode of a front portion of a thin plate.

FIG. 4 is a side view showing an aspect of delivering products and separating chips.

FIG. 5 is a side view showing a cutting mode of a rear portion of the thin plate.

FIG. 6 is a side view showing an aspect of delivering products and separating chips.

[Explanation of symbols]

 1 thin plate 2 carry-out conveyor 3 thin plate detector 4 product 5 carry-out conveyor 6a, 6b rotary anvil 7a, 70a, 7b, 70b rotary knife 8 chips 9a, 90a, 9b, 90b position detector 10 control circuit 11a, 11b intermittent drive mechanism 12 Coupling drive mechanism

Claims (3)

[Claims] 1. A carry-in and carry-out conveyor for continuously or intermittently transporting thin plates, a pair of upper and lower rotary anvils arranged at a connecting portion of the carry-in and carry-out conveyors, and a rotating outer periphery of each of the rotary anvils. The rotary anvil is coaxially mounted on the upper and lower sides of the rotary anvil, and the rotary anvils are brought into contact with upper and lower blade edges to cut the thin plate in the carrying process to cut before and after a defective portion to be separated. A rotary cutting machine for thin plates, characterized by comprising a pair of upper and lower rotary knives provided side by side at a connecting portion of the carry-in and carry-out conveyors so that chips can be separated to the outside of the machine and delivered to the subsequent stage of the product. 2. A connecting drive mechanism in which a pair of upper and lower rotating anvils are vertically connected to each other so as to be continuously driven, and a pair of upper and lower rotating knives are respectively set on the thin plate carry-in side and the thin plate carry-out side. 2. The rotary cutting machine for thin plates according to claim 1, further comprising an intermittent drive mechanism axially mounted at a stop position so that braking can be intermittently stopped. 3. The rotary cutting machine for thin plates according to claim 1, further comprising a knife mounting mechanism in which a pair of upper and lower rotary knives are formed on a single or a plurality of blades.