JPH09210754A - Weighing/cutting method of synthetic rubber and apparatus thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a weighing/cutting method of synthetic rubber and an apparatus thereof in which a sectional shape measuring means for measuring the sectional shape of a rubber mass with a known total weight is provided to calculate the volume thereof by accumulating sectional areas and a necessary weight alone of the rubber is cut out accurately in terms of a volume ratio to store a rubber piece together with the weight value thereof. SOLUTION: A weighing cutter 1 is provided with a conveying device 5 which is built by serially arranging a carry-in conveyor 2 to carry in a rubber mass W, a plurality of carry-out conveyors 3 installed in parallel and a plurality of weighing conveyors 4 installed in parallel. A storage device 5 is installed on the tip side of the weighing conveyors 4. In the longitudinal course on the carry-in conveyor 2, a stopper 8 is provided and a sectional shape measuring means 9 is provided to measure the sectional shape of the rubber mass W with a non-contact sensor while detecting the volume thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for measuring and cutting synthetic rubber, and more specifically, in the case of cutting out only a necessary weight from a rubber lump whose overall weight is known, the weight is known. Measure the cross-sectional shape of the rubber block, convert the rubber weight into a volume value, cut the rubber piece of only the required weight from the rubber block at the position of the movement amount corresponding to the required cutout weight, and store it in the storage device. The present invention relates to a method for measuring and cutting synthetic rubber and a device therefor.

[0002]

2. Description of the Related Art Conventionally, in a maker that manufactures products using synthetic rubber materials, the total weight of one block is a known amount such as 35 Kgf, etc. When the piece is cut, it is cut into a predetermined length at a weight ratio corresponding to the length of the entire length of the rubber block.

For example, in the invention of "Method and apparatus for metering and feeding unvulcanized rubber" of Japanese Patent Laid-Open No. 63-15706,
When cutting a set amount of rubber from a raw rubber block, weigh the length of the first cut rubber, calculate the second cut length corresponding to the remaining rubber weight, and cut. Is. In addition, JP-A-4-25292
In the invention of "Raw material rubber fraction measuring method and apparatus thereof" in Japanese Patent Publication No. 1, a raw material block is cut into 1 / n-α, a sheet is taken out by a roll and then measured by a measuring apparatus to obtain a predetermined size. It is a method of cutting and carrying out to a supply line.

[0004]

However, since the rubber block (raw material rubber block) is variously deformed and the shape is not uniform, the rubber block is cut at the length ratio of the rubber block.
There was a problem that the required weight of rubber material could not be cut accurately. The present invention has been made in view of the above-mentioned conventional problems, and provides cross-sectional shape measuring means for measuring the cross-sectional shape of a rubber lump whose total weight is known, and integrates the cross-sectional areas. It is an object of the present invention to provide a method and a device for measuring and cutting synthetic rubber in which the volume is calculated, the necessary weight is accurately cut according to the volume ratio, and the cut rubber piece is stored together with the weight value. Is.

[0005]

In order to achieve the above object, the present invention provides a control device for inputting in advance a necessary rubber weight to be cut out from a rubber block having a known overall weight,
During the transfer process of the transfer device for transferring the rubber lump, a cross-sectional shape measuring unit that is connected to the control device and measures the cross-sectional shape by a non-contact sensor, and detects the volume,
The cutting position is determined by the volume ratio calculated by the control device, a device for cutting a rubber block into a predetermined length is installed, and a device for measuring the weight of the cut rubber piece and a cut rubber along with a weight value The gist is that the storage device for storing one piece is provided.

The present invention is configured as described above, and the amount of rubber required to be cut out by a rubber block having a known overall weight is input to the control device in advance, and the rubber block is cut by the belt conveyor of the cutting device. During the conveyance process up to, while measuring the cross-sectional shape of the rubber block by the cross-sectional shape measuring means, the total length of the rubber block is measured by the length detecting means, and the measured value is input to the control device and stored. Calculates the overall shape and volume of the rubber block, calculates the target cutting length from the rubber block tip to cut out the required weight from the required volume, and instruct the controller to send the rubber block with the feed amount of the belt conveyor. It is sent to the cutting device, the rubber block is cut into a length corresponding to the required weight, and the cut rubber pieces are
After the weight is measured, the weight is stored in a storage rack together with the weight value, so that a rubber piece having a necessary weight can be accurately cut out from a rubber lump whose overall weight is known and stored.

[0007]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic configuration diagram of a synthetic rubber weighing and cutting device 1 and a storage device 2 embodying the present invention, and FIG. 2 is an enlarged perspective view of an essential part. The weighing and cutting device 1 carries in a rubber block W. A plurality of (in this embodiment, two in this embodiment) carry-in conveyors 2 (belt conveyors) installed in parallel, carry-out conveyors 3 (belt conveyors), and weighing conveyors 4 are arranged in series to form a conveying device. The storage device 5 that stores the cut rubber piece Wa in the storage conveyor 5a is installed on the tip side of the weighing conveyor 4.

The carry-in conveyor 2 is rotatably driven by a drive motor 7 having an encoder 6, and a stopper 8 which can be moved up and down by an air cylinder 8a or the like is provided in the middle of the carry-in conveyor 2 in the longitudinal direction. As shown in FIG. 2, the cross-sectional shape of the rubber lump W is measured by a non-contact sensor 9b (for example, a laser displacement sensor), and
A cross-sectional shape measuring unit 9 for detecting the volume is provided.

The carry-out conveyor 3 is rotatably driven by a drive motor 3a, and the upper part of the carry-out conveyor 3 on the carry-out end side is lifted to hold the conveyed rubber block W on the carry-out conveyor 3. A possible holding device 10 and a so-called guillotine type cutter 11a on the side of the holding device 10.
Cutting device 11 provided with a positioning stopper 12b that can adjust the position in the front-back direction by a positioning cylinder 12a.
And is installed.

The measuring conveyor 4 is installed horizontally below the leading end of the carry-out conveyor 3, and an inclined guide member 13 is installed between the carry-out conveyor 3 and the measuring conveyor 4. Further, the measuring and cutting device 1 is provided with a control device 15 for previously inputting a rubber weight of a necessary weight to be cut out from the rubber block W of which the overall weight is known. The cross-sectional shape measuring means 9 for measuring the cross-sectional shape of the rubber block W by the encoder 6 provided in the second drive motor 7 and the non-contact sensor 9b (for example, a laser displacement sensor) and detecting the volume.
And a positioning cylinder 12a for operating the positioning stopper 12b are further connected.

The stopper 8 and the positioning stopper 1
2b has the same shape and the same rigidity, so that the posture of the rubber lump W does not change when measuring the cross-sectional shape of the rubber lump W and at the time of cutting, and conveys the cross-section shape measuring surface and the cutting surface. The positional relationship with respect to the flow direction can be maintained. Next, a method for measuring and cutting synthetic rubber will be described. The necessary weight of the rubber piece Wa, which is cut out from the rubber lump W of 35 kgf, is input to the control device 15 in advance, and the ratio of the necessary weight to the total weight is calculated.

Next, the rubber block W is transferred to the carry-in conveyor 2 by hand or the like, and the drive motor 7 having the encoder 6 is driven to move the rubber block W to the right in FIG. When the rubber lump W on the carry-in conveyor 2 collides with the side surface of the stopper 8 descending by the air cylinder 8a, the rubber lump W is transferred to the control device 15 by a collision detection means (detection sensor) (not shown) provided in the stopper 8. The signal that collides with the stopper 8 is transmitted, the drive motor 7 provided with the encoder 6 is stopped, and the movement of the carry-in conveyor 2 is also stopped.

Next, the stopper 8 is an air cylinder 8a.
After avoiding to the position shown by the solid line in the figure, drive motor 7
Is driven, the carry-in conveyor 2 starts moving, and the rubber lump W starts moving to the right. The feed amount of the carry-in conveyor 2 is counted by the encoder 6 until the tip Wx of the rubber lump W in the traveling direction reaches the sensor mounting surface 9a of the cross-sectional shape measuring means 9, and the tip Wx of the rubber lump W in the traveling direction is mounted by the sensor. The non-contact sensor 9b of the sectional shape measuring means 9 mounted on the sensor mounting surface 9a from the time when the surface 9a is reached.
Starts measuring the sectional shape of the rubber lump W.

The sectional shape is measured until the rubber block W completely passes the sensor mounting surface 9a, and the feed amount of the carry-in conveyor 2 is counted by the encoder 6 until the moment when the rubber block W passes the sensor mounting surface 9a. The total length of the rubber block W is measured. All the cross-sectional shapes during this period are stored in the control device 15, and the overall shape and volume of the rubber lump W are calculated from these.

Assuming that the specific mass of the rubber lump W is uniform inside, the ratio of the required weight and the total weight of the rubber lump W and the ratio of the required volume and the total volume are equal. A target cutting length from the tip Wx of the rubber block W for cutting is calculated. The cross-sectional shape measuring means 9
The cross-sectional shape detection by means of the non-contact sensor 9b which detects only the representative points using a laser displacement type, etc., and the method of irradiating the laser slit light and detecting the vertical displacement of the laser slit light, etc. Contact method is preferred.

As a reason for this, contact type stroke detection and the like can be considered, but the measurement point becomes large,
It is not preferable that it is difficult to follow a high spatial frequency change. Next, the positioning cylinder 12a is driven by a command from the control device 15, and the guillotine type cutter 11a is driven.
The distance between the cutting device 11 provided with and the positioning stopper 12b is controlled to be equal to the cutting target length.

When the rubber block W is transferred from the carry-in conveyor 2 to the carry-out conveyor 3 and is carried by the carry-out conveyor 3 and collides with the positioning stopper 12b, a collision detecting means (not shown) provided in the positioning stopper 12b controls the controller. 15 stops driving the drive motor 3a. In this state, the pressing device 10 is lowered to fix the rubber block W on the carry-out conveyor 3 so as not to move, and then the guillotine type cutter 11a of the cutting device 11 is lowered to cut into a predetermined length. is there.

The cut rubber piece Wa is transferred onto the weighing conveyor 4 via the slanted guide member 13, and after the weight of the rubber piece Wa is measured here, the rubber piece Wa is stored together with the measured weight value. Storage conveyor 5a of device 5
It is transferred and stored on the above. As described above, according to the present invention, the cross-sectional shape measuring means for measuring the cross-sectional shape of the rubber lump W of which the overall weight is known is provided, the volume is calculated by integrating the cross-sectional areas, and the required weight is calculated by the volume ratio. Only the rubber pieces are accurately cut out, and the cut out rubber pieces are stored together with their weight values.

[0019]

EFFECTS OF THE INVENTION According to the present invention configured as described above, the required amount of weight was cut out from the rubber block only by the length ratio in the belt conveyor direction, whereas the deformation of the rubber block shape was measured. Therefore, it is possible to improve the cutting accuracy of the required weight, and by arranging two narrow belt conveyors in parallel in the width direction, the lower surface of the rubber lump can be measured and always cut with high accuracy. There is an effect that the rubber piece can be stored together with its weight value.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a synthetic rubber measuring and cutting device and a storage device embodying the present invention.

FIG. 2 is a schematic perspective view of a cross-sectional shape measuring unit.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Weighing / cutting device 2 Carry-in conveyor 3 Carry-out conveyor 3a Drive motor 4 Weighing conveyor 5 Storage device 5a Storage conveyor 6 Encoder 7 Drive motor 8 Stopper 8a Air cylinder 9 Cross-sectional shape measuring means 9a Cross-sectional shape measuring sensor mounting surface 9b Non-contact sensor 10 Holding device 11 Cutting device 11a Guillotine type cutter 12a Positioning cylinder 12b Positioning stopper 13 Guide member 15 Control device W Rubber block Wa Rubber piece Wx Tip of rubber block

Claims (2)

[Claims] 1. A control device is previously input with a rubber amount of a necessary weight for cutting out a rubber block having a known total weight, and the rubber block is cross-sectioned during a conveying process to a cutting device by a belt conveyor of the cutting device. The shape measuring means measures the cross-sectional shape of the rubber lump, the length detecting means measures the total length of the rubber lump, and the measured value is input to and stored in the control device. Calculate and calculate the target cutting length from the tip of the rubber block to cut out the required weight from the required volume, and send the rubber block to the cutting device with the feed amount of the belt conveyor according to the command from the control device. Is cut to a length corresponding to the required weight, and the cut rubber piece is weighed and then stored in a storage rack together with the weight value. Method. 2. A controller for preliminarily inputting a rubber weight of a necessary weight to be cut out from a rubber block having a known total weight, and a controller for connecting to the controller during a transfer process of a transfer device for transferring the rubber block. And a cross-sectional shape measuring means for measuring the cross-sectional shape by a non-contact sensor and detecting the volume, and a device for deciding the cutting position by the volume ratio calculated by the control device and cutting the rubber block into a predetermined length. Installed
A measuring / cutting device for synthetic rubber, comprising: a device for measuring the weight of the cut rubber pieces, and a storage device for storing the cut rubber pieces together with the weight value.