JPS5814283B2 - Cutting device for clay strips - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is an apparatus that continuously cuts strip-shaped clay substrates that are continuously fed from a kneading machine or the like, and is capable of accurately cutting into predetermined dimensions without using a sizing stopper. The present invention relates to a cutting device for strip-shaped clay substrates.

Prior Art A conventional device for cutting clay strips without using a stopper is disclosed in Japanese Patent Publication No. 49-25167 filed by the applicant of the present invention.
As seen in the invention of the above issue, the rotational force of a roller that rotates due to the frictional force between a belt conveyor and a band-shaped clay material being pushed from a clay kneading machine etc. is connected to a series of gear mechanisms and pivotally supported. A cam attached to a camshaft moves a cart equipped with a piano wire cutting blade in synchronization with the feeding speed of the strip material, and a separate drive device cuts the material and immediately returns quickly to move the cart. There was also a cutting device that was designed to return to the original position, but since the cutting blade was installed on a cart, there was a limit to the weight reduction of the cutting part that moved in sync with the strip-shaped substrate, and it was difficult to cut thin strip-shaped substrates or water-containing substrates. When cutting high-grade materials, etc., the frictional force between the strip material and the belt conveyor is small, which causes slippage, resulting in the defect that the moving speed of the cart is not synchronized with the pushing speed of the strip material. Ta.

Furthermore, in order to cut the substrate into accurate dimensions, it is desirable to shorten the cutting time as much as possible, but as shown in Fig. In order to shorten the cutting time in order to cut accurately to the specified dimensions, the cutting blade was moved up and down in a state almost parallel to the strip-like base material. Since the hit length l1 is long,
The resistance of the clay substrate to the cutting blade becomes large, and this combined with the fact that the cutting blade is relatively long (exceeding the width of the clay substrate) makes the cutting blade susceptible to deformation, reducing the cutting dimensional accuracy of the strip-shaped substrate and cutting There was a problem in that the number of blade breakages increased, which hindered the continuous operation of the production process.

Structure of the Invention In view of the above-mentioned problems, the present invention provides a cutting section that rotates in reverse under the guidance of a drive cam rotated by a belt conveyor whose driving force is the frictional resistance of a strip of clay material being pushed by a clay kneading machine or the like. The cutting base to which the cutting base is attached slides back and forth on a guide bar equipped with a rotation device in synchronization with the extrusion speed of the clay substrate, and the cutting base is rotated and reversed every predetermined extrusion length to produce the desired strip-shaped clay substrate. The present invention will be explained with reference to the drawings of the embodiments. In Figs. 1 to 3, the cutting device 1 is arranged at the rear end (
A rear roller 3 is supported for free rotation at the left end in FIGS. 1 and 2, and a front roller 4 is supported for free rotation at the middle of the upper surface of the machine base 2. A freely rotating belt conveyor 6 is formed by passing an endless belt 5 between the front rollers 4 and a rotating shaft 7 fixed to the front roller 4. A rotating shaft is supported on a bearing 11 provided on a pedestal 10 attached to the lower part of the machine base 2. 12 is meshed with the gear 8 and the gear 13 is fitted in a replaceable manner, and a driving force arm 14 is fixed to this rotating shaft 12.
A cam groove 15 of a predetermined shape is carved on the side surface of the machine base 2, and a base end 18 of a swinging lever 17 is provided at the bottom of the machine base 2, and a cam roller 16 that can be freely moved is attached to the cam groove 15 in the middle part thereof. It is pivoted to the bracket 19.

On the other hand, a guide bar 21 has a key groove 20 carved in the front part of the machine base 2 in the axial direction parallel to the running direction of the belt conveyor 6.
A cylindrical cutting base 25 is supported by bearings 22, 22, and has a key groove 24 on the inside that fits the key 23 that fits in the key groove 20 of this guide bar 21, and is slidable on the guide bar 21. The rear end 26 and the upper end 27 of the swing lever 17 are connected by a connecting rod 28, and a cutting blade 3 made of piano wire is attached to an arched temple 29 protruding from approximately the center of the cutting base 25.
The drive shaft 34 of the geared motor 33 is attached to the lower end of the connecting rod 32, which has its upper end pivoted to the tip of the clamp 31 attached to the tip of the guide par 21. Connect with the tip of the crank 35 attached to the.

A dog 36 is provided on the rotating shaft 12 of the gear 13, and a limit switch 37 that controls the timing of rotation of the cutting blade 30 is installed adjacent to the dog 36. Another dog 39, 39 is provided on the drive shaft 34 of the geared motor 33 and the cutting blade 3 is provided close to the other dog 39 so as to be in contact with each other at a certain position.
Another limit switch 40 for controlling the rotational reversal movement of 0
The contact piece 41 of the machine 2
On the extension of the receiving rollers 9, 9, . Support rollers 43, 43 supported by support plates 42, 42
,... Arrange the group.

In the figure, M indicates a strip-shaped clay base extruded from a clay kneading machine (not shown) or the like, and M' indicates a tile base cut into a predetermined size l.

Function of the Invention To explain the function of the present invention using the diagram of a leprosy example, in Figs. 4 and 5, arrow P is
When the band-shaped clay material M extruded in the direction moves onto the upper surface of the endless belt 5 of the freely rotating belt conveyor 6, the belt conveyor 6 moves in the direction of the arrow due to the frictional resistance between the lower surface of the band-shaped clay material M and the upper surface of the endless belt 5. Run to.

Rotating shaft 7 to which the front roller 4 of the belt conveyor 6 is fixed
Since the gear 8 is fixed concentrically to the gear 8, when the gear 8 rotates in the direction of the arrow R', the gear 13 meshed with the gear 8 rotates in the direction of the arrow R'J, and the rotation axis 1 of the gear 13 rotates in the direction of the arrow R'J.
The driving force arm 14 fixed to 2 also rotates in the direction of arrow R',
A cam opening roller 16 rolls in the cam groove 15 guided by a cam groove 15 of a predetermined shape carved on the side periphery of the driving force member 14, and a swinging lever with this cam roller 16 pivoted in the middle. 17 repeatedly swings back and forth in the directions of arrows Q and Q' with the base end 18 as the center.

A rear end 26 of a cutting base 25 is fitted to a guide bar 21 provided at the front of the machine base 2 parallel to the flow direction (arrow P) of the band-shaped clay base material M so as to be slidable in the directions of arrows P and P'. Since the upper end 27 of the swinging lever 17 is connected to the upper end 27 of the swinging lever 17 by a holder 28, as the swinging lever 17 swings back and forth in the directions of the arrows Q and q, the cutting base 25 moves on the guide bar 21 in the direction of the arrows P and P. Although it reciprocates in the ' direction, the key 23 prevents the cutting base 25 from rotating around the guide bar 21.

A support plate 42 connected to the cutting base 25. 42 do not rotate together even when the cutting base 25 reverses its rotation, but when the cutting base 25 slides back and forth on the guide bar 21, the support plates 42 . 4
A group of support rollers 43 supported by rollers 2 also reciprocate accordingly.

Since the cam groove 15 is carved in a predetermined shape, when the driving force 14 comes to a position where the moving speed of the cutting base 25 in the direction of the arrow P and the flow speed of the band-shaped clay base M match,
A dog 36 provided on the rotating shaft 12 is a limit switch 37.
The electrical signal causes the geared motor 33 to engage a clutch, the drive wheel 34 to rotate, and the guide bar 21 to move in the direction of arrow S via the crank 35, connecting rod 32, and crank 31. This guide bar 21 rotates.
The key 23 causes the vertically slidable cutting base 25 to rotate in the direction of the arrow S, and the piano wire cutting blade 30, which is stretched over a temple 29 fixed approximately in the center of the cutting base 25, rapidly moves in the direction of the arrow S. The girder motor 33 rotates in the direction, cuts the band-shaped clay material M that is placed on the front support roller group 43, and is flowing at the same speed as the support roller group 43, and connects the guard motor 33 to the contactor 41 of the limit switch One of the dogs 39, 39 provided symmetrically on the drive shaft 34 of the tile 29 is brought into contact with the vine 29, and the rotated vine 29 is temporarily stopped at the rotated position. When the substrate M' has flowed by the length l, the dog 36 comes into contact with the toucher 38 of the limit switch 37 again, and the guard motor 33 is activated by the command, first rotated in the direction of arrow S, and then stopped. The tendril 29 that had been in use is rapidly rotated in the direction of arrow S', and the support rollers 43, 4 are cut by the cutting blade 30 made of piano wire.
3. Cut the band-shaped clay base M flowing above in the direction of arrow S at a desired length l from the previous cut surface A, and cut the tile base M' with the desired length l. is obtained.

The above operations are performed continuously.

Since the gear 8 and the gear 13 meshing with it are replaceable, the length l of the tile base M'(7) can be determined by changing the gear ratio of both gears 8 and 13. , can be selected arbitrarily.

Effects of the Invention The present invention moves clay strips and soil substrates pushed from a clay kneading machine or the like onto a freely rotating belt conveyor, and utilizes the frictional resistance between the clay strips and the belt of the belt conveyor to continuously The transmission mechanism is actuated to synchronize the moving speed of the cutting base equipped with the cutting blade with the speed in the flow direction of the strip-shaped clay material through the drive cam and the swing lever, and in the same direction and at the same speed as the flow of the material. While the cutting blade is moving, the piano wire cutting blade rapidly rotates in one direction, cuts the substrate and stops rotating, and when the flowing substrate has flowed a predetermined length, Following this flow, the moving cutting blade quickly rotates again in the opposite direction to cut the material to a predetermined length, allowing it to determine the length of the material like a traditional cutting machine. Because there is no stopper to temporarily stop the flow of the material, cutting is performed without stopping the flow of the material even for a moment, making the work of cutting the strip-shaped clay material into the length of the tile material extremely efficient. Not only that, but there are no scratches left by the stopper on the ends of the tile base after cutting, and tile bases with highly accurate dimensions can now be obtained, resulting in a significant improvement in productivity.

In addition, the present invention moves the band-shaped clay material being pushed from a clay kneading machine or the like onto a freely rotating belt conveyor, and operates intermittently by utilizing the frictional resistance between the band-shaped clay material and the belt of the belt conveyor. The moving speed of the cutting section, which has a cutting blade attached to the cutting base that is slidably fitted into a guide bar with a rotation device, is synchronized with the speed at which the clay strip is pushed, so that only the cutting blade and its base can be moved. The weight of the cutting part can be dramatically reduced, and the cutting part can be moved easily even when cutting materials with low friction with the belt conveyor, such as thin clay substrates or materials with high moisture content. Since the speed can be synchronized with the extrusion speed of the strip material, it is possible to reliably cut the strip material into accurate dimensions regardless of the properties of the strip material, which has an extremely large effect in improving the product yield.

Furthermore, as shown in Fig. 7, the cutting blade is rotatable and cuts from the lateral direction, so the contact length l2 of the cutting blade is short and the resistance of the strip material is small, so the cutting force is small. Since the cutting speed can be increased, and the cutting blade can be shortened, the amount of deformation of the cutting blade during cutting is reduced, reducing fatigue failure of the cutting blade, and preventing breakage of the cutting blade. The effect of significantly reducing losses due to interruptions in the production process is tremendous.

[Brief explanation of the drawing]

FIG. 1 is a partially-disclosed schematic plan view of a cutting device embodying the present invention, FIG. 2 is a partially-disclosed schematic front view, FIG. 3 is a partially-disclosed schematic side view, and FIG. The figure is the same, front view for explanation of action, 5th
The figures are side views explaining the action, FIG. 6 is an illustration of the cutting action of the prior art, and FIG. 7 is an illustration of the cutting action of the present invention. Explanation of symbols of main parts, 1... Cutting device, 2.
...Machine base, 4...Front roller, 5...
... Endless belt, 6... Belt conveyor, 7... Rotating shaft (of the front roller), 8... Gear, 9... Receiving roller, 12... Rotating shaft (of the gear), 13... Gear , 14
... Drive cam, 16 ... Cam roller, 17 ... Swing lever, 21 ... Guide bar, 23 ... Key, 25 ... Cutting base, 28 ... Linking rod (to swing lever 29 ... Vine, 3
0...Cutting blade (piano wire), 31...Crank, 32...
…Repeat rod (for guard motor), 33…Gard motor, 35…Crank, 36…Dog (for reciprocating),
37... Limit switch (for reciprocation), 39... Dog (for rotation), 40... Limit switch (rotating rib, 43
...Support roller, M...Striped clay base, M'...Tile base.

Claims (1)

[Claims] 1. A belt conveyor is installed almost horizontally on the extension of the belt-shaped clay material being pushed by a clay kneading machine, etc., and a guide bar equipped with a rotation device that operates intermittently is installed on the machine in front of the belt conveyor, A slidable cutting base is fitted to the guide bar, and a rotating and reversible cutting part is attached to the cutting base;
The roller at one end of the belt conveyor and the drive cam are coupled by a series of transmission mechanisms, and a cam roller that rolls on the drive cam is provided as part of a swinging lever whose one end is pivotally supported on the machine base, and the swinging A cutting device for a band-shaped clay substrate, characterized in that a lever and one end of the cutting base are connected by a continuous rod.