JPS59164104A - Method and device for carrying extrusion shape consisting ofcement group compsition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for conveying extruded products made of cement-based compositions, and more specifically to a method and apparatus for extrusion conveying extruded corner timbers, large corner timbers, etc. having a △-shaped cross section. It is related to.

In general, a cement-based composition is made entirely of cement as a main material, with appropriate admixtures of auxiliary materials such as silica sand, asbestos, and shirasu balloons. The conventional manufacturing method for this type of molded product is to add water to the composition, knead it, run it in an extruder to make a flat molded product of a predetermined length, and then cure and harden the two molded products. glue? Use to join at right angles. ``J fc uses a casting mold-like formwork to form a single piece.When using the former method, dirt on the adhesive surface greatly affects the adhesive strength; The product will not be beautiful because the agent will protrude, etc. When using the latter method, it will take a long time to use water and curing before the cup is released, and a large number of star frames will be required for busy production. Therefore, productivity is extremely low.

The present invention has been made in view of the drawbacks of the above-mentioned conventional methods, and is capable of processing a molded product having a △-shaped cross section extruded from a die of an extruder and a molded product cut into a predetermined length without deforming it. An extrusion molded product made of a cement-based composition that is conveyed while retaining its shape, and thus is formed entirely continuously and automatically, and is made of a cement-based composition that improves the molding speed. The purpose of this invention is to provide a method and device for transporting goods.

Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 schematically shows a conveying device for extruded products according to the present invention, in which a cement-based composition to which water has been added is supplied from a hopper 2 provided at the top of the extruder 1, A molded product A (FIG. 2) is continuously extruded from a die 3 having a △-shaped hole by a screw (not shown) provided inside the mold.

An extrusion speed detection roller 4 for the extrusion molded product A is disposed in front of the extruder 1 (to the right in FIG. 1) and adjacent to the extruder 1.

The speed detection row 24 is formed into a bead shape (Fig. 3), or by slidingly overlapping a plurality of disks with different diameters (Fig. 4). , or the smooth peripheral surfaces of a plurality of cantilever frill rollers are arranged orthogonally to form a guide surface with a chevron-shaped cross section on the upper surface (Fig. 5), or a pair of pulleys are arranged as shown in Figs. 6A to 6c. As shown, a belt is wound around the guide surface of the chevron-shaped cross section on the upper surface so that it can rotate freely. When the roller or belt rotates in contact with the molded product A continuously extruded from the die 3, the rotation of the roller or belt is controlled by a generator, rotary encoder, etc.
The moving speed of the robot is electrically detected.

Among the above rollers, the roller shown in FIG.

It is superior to the roller shown in Fig. 3 in that it causes less friction.

A first belt conveyor 5 is provided in front of the speed detection roller 4. 1st belt conveyor 51d mo p-f-15
, A and a belt 5C wound around a plurality of pulleys 5B.
The extrusion speed of the molded product A is decorated by the speed detection roller 4 emitted from the speed detection roller 4 so that its transition speed is the same as the extrusion speed of the molded product A. Incidentally, the cross section of the belt 5C is 6A~
It is formed similarly to either of the belts shown in Figure 6C. A cleaning device 6 driven by a motor (not shown) is disposed below the first belt conveyor 5, and cleans different surfaces of the first belt conveyor 5 by rotating the cleaning device.

A cutting device 7 is provided above the first belt conveyor 5, and the belt conveyor 5 is cut by the operation of an air cylinder or the like.
Cuts are made at predetermined intervals on the molded product AK being transported. For this reason, the cutting device 7 reciprocates back and forth in the direction of the arrow 7A. As shown in FIG. 7A, the cutter 7B of the cutting device 7 cuts the chevron-shaped notch by moving in the vertical direction. Alternatively, as shown in FIG. 7B, two cutters 7B may be arranged orthogonally and moved in the direction of the arrow.

A group of free rollers 8 arranged in series is provided in front of the first belt conveyor 5. The individual free rollers of this free roller group are formed similarly to any of the rollers shown in FIGS. 3-5.

A second belt conveyor 9 is provided in front of the free roller group 8. This second belt conveyor 9 is also the first belt conveyor 5.
9, which has a similar structure and is also equipped with a cleaning device IIO, or whose extrusion speed is almost the same as that of the molded product.
, it differs from the first belt conveyor 5 only in that it is transferred at a faster speed. The reason why the speed of the second belt conveyor 9 is variable as described above is that depending on the length between the cuts in the extrusion molded product, the mj rear end of one uncured molded product may straddle the first and second belt conveyors. In this case, both belt conveyors must be at the same speed, and the cut should be 8° for the free roller group.
This is because when the molded product reaches the top, it is necessary to increase the speed of the second belt conveyor 9, which transports the front molded product faster than the rear molded product.

A sheet feeding device 11 is disposed below between the free roller group 8 and the second belt conveyor 9. Sheet feeding device 1
Reference numeral 1 supplies a sheet 12 made of hard PVC or the like for applying the lower surface of a cut-shaped article onto the second belt conveyor 9 before transferring the molded article A to the second belt conveyor 9. The sheet 12 may be creased in a △ shape in advance just before being fed, or
Alternatively, the sheet 12 folded in half may be made to crease naturally depending on the weight of the molded product A transferred on top.
can also be fed onto the second belt conveyor 9 while being returned. A sheet cutting device fi1.13 is provided near the rear end of the second belt conveyor 9, and the sheet 12 is cut at a length υ slightly longer than the cut interval of the molded product A.

A pallet transfer device 14 is disposed in front of the second belt conveyor 9. - The Yalet transfer device 14 includes a plurality of guide rails 15 provided laterally with respect to the direction of movement of the second belt cosi pair 9, and a pallet 16 that moves intermittently in the lateral direction on the guide rails 15. A plurality of rows of free roller groups 17 are arranged on the pallet 16 in parallel to the moving direction of the second belt conveyor 9. This free roller group 17 can have a similar structure to the free roller group 8.

In addition, the die hole of the extruder mentioned above, the speed detection roller 4, the first belt conveyor 5, the free roller #8, the second belt conveyor 9, and the upper surface of each transfer device of the pallet transfer device and the 14 free roller groups 17 are Place them on the same level. Further, it is preferable that the cross-sectional shape of the lower surface of the molded product A and the cross-sectional shape of the circular surface of each transfer device are 4-shaped.

Next, the operation of the present invention will be explained.

(1) When the cement composition is extruded through the hole of the die 3 of the extruder, a molded article A having the same cross-sectional shape as the die hole is extruded.

(2) The extrusion speed is detected when this passes over the speed detection roller 4 in the form of a free roller.

(3) A speed signal is sent to the motor nolly 5A of the first belt conveyor 5 to move the molded product A on the first belt conveyor 5 at a speed equal to the total extrusion speed of the first belt conveyor 5. Since the molded product A is still in a soft state, the extruded molded product A is moved from the rear at a speed equal to the extrusion speed of the extruder 1 to completely prevent its deformation.

(4) The cutting device 7 is moved at the same speed as the first belt conveyor 5.
A cut is made on the molded product A on the conveyor while being sent to the J direction.

(5) The cut molded product may be cut and separated at the cut, but it may be extruded onto the free roller group 8 at the same speed as the extrusion speed without being completely separated.

(6) Before transferring the above molded product A to the second belt conveyor 9, the sheet 12 for applying the lower surface of the molded product is fed onto the second belt conveyor 9 by the sheet feeding device. sheet 12
is slightly wider than the width of the molded part.

Further, the molded product is cut by the cutting device 13 to a length slightly longer than the length of the molded product. If you use a hard-to-flex material such as hard PVC for the sheet, and make creases that match the shape of the bottom of molded product A,
Since the uncured molded product A is fully supported from below on the free roller group 17 in the next step, no deformation occurs. This sheet is used to cover the bottom surface during pre-curing and is removed from the molded product before autoclaving molded product A.A sheet with good peelability is selected.The second belt conveyor 9 is replaced by the first belt conveyor. It is designed to be able to move at almost the same speed as 5 or faster,
The molded product A is simply separated or pulled at the cut portion by the speed difference between the two.

(7) Seat on the bottom as above) 12'! +- When the attached individual molded products A have been transferred to the first row of free rollers ■ on the pallet 16, the pallet 16 is moved horizontally one pitch and the next molded product is transferred. Transfer A to the second row of free rollers @. When the transfer of molded products to one pallet is completed, a new i'? supplies and prepares for the next transfer.

The present invention is configured as described above, and the molded product extruded from the die of the extruder is supported and guided by a guide surface having the same cross-sectional shape as the bottom surface shape of the molded product during transportation, and is in an uncured state. Since the bottom surface is supported by a sheet that does not easily bend when placed on a pallet that is left on a pallet for a long time, it is possible to prevent deformation that easily occurs in the molded product whether it is moving or stationary during molding of the extrusion molded product. In addition, the extrusion molded product can be continuously and automatically molded, and the molding speed and yield of the molded product can be improved.

[Brief explanation of the drawing]

FIG. 1 is a side view schematically showing an embodiment of the present invention, and FIG.
The figure is an Ig+ view showing the extrusion molded product, 3N-5 is a front view showing a modified form of the free roller, Sections 6A to 6C
7A and 7B are front views showing the operation of the cutting device, and FIG. 8 is a plan view of the molded product transfer device. DESCRIPTION OF SYMBOLS 1... Extruder, 3... Dice, 5... First belt conveyor, 7... Cutting device, 8... Free cola group, 9... Second belt conveyor, 11... Sheet feeding device, 12... Sheet, 13... Sheet cutting device,
14... Molded product transfer device, 15... Guide rail,
16...Pallet, 17...Multiple rows of free roller groups, A...Extrusion molded product.

Claims (1)

[Claims] 1. Continuously extrude an uncured cement-based composition through a △-shaped die hole of an extrusion machine to form a topography product with a △-shaped cross section, cut into a predetermined length, and conveyed in the extrusion direction. In this method, the molded product extruded from the die is transferred at almost the same speed as the extrusion speed and transferred to the first belt conveyor, which has a guide surface with a chevron-shaped cross section on the upper surface, and the molded product being conveyed is Cuts are made at a predetermined interval of m] on the first belt conveyor, and the cut molded product is transferred to a group of free rollers that form a guide surface with a chevron-shaped cross section on the upper surface, and the free roller Prior to transferring the molded product to a second belt conveyor which is disposed following the group and has a guide surface with a chevron-shaped cross section on its upper surface, the second belt is A second belt feeds one sheet for cleaning the bottom of the molded product onto the conveyor, moves at almost the same speed as the extrusion speed until it reaches the cut line or the free roller, and moves at a high speed once the cut line reaches the free roller. Multiple rows of individual molded products, each with a sheet attached to the bottom surface and a guide surface with a chevron-shaped cross section formed on the top surface, are placed on a pallet with spaces between each molded product by being transferred to the conveyor via the sheet. The molded products are transferred to one row of the free roller groups adjacent to each other, and the molded products are moved intermittently in the lateral direction with respect to the transfer direction of the second belt conveyor, and the individual molded products are transferred to one row of the free roller groups adjacent to each other. A method of transporting an extruded product made of a cement-based composition by sequentially transferring the product to a 2. It is a device that continuously extrudes an uncured cement-based composition through a △-shaped die hole with an extrusion gap to form a △-shaped molded product, cuts it into a predetermined length, and transports it in the extrusion direction. te, △
an extruder having a shaped die hole, a first belt conveyor that moves at approximately the same speed as the extrusion speed of the extruder and has a guide surface with a chevron-shaped cross section on the upper side; A cutting device that cuts the molded product on the belt conveyor at predetermined intervals, a group of free rollers that form a guide surface with a chevron-shaped cross section on the upper surface, and an extrusion speed that is almost constant with the extrusion speed of the extruder! A second belt conveyor is provided between the free roller group and the second belt conveyor, and the second belt conveyor is capable of moving at a higher speed than the second belt conveyor and has a guide surface with a chevron-shaped cross section on its upper surface. The extruder is equipped with a sheet feeding device that continuously supplies a sheet for applying the lower surface, and a sheet cutting device that is installed near the sheet feeding device and cuts the sheet into a predetermined length.
The belt conveyor, the free roller group, and the second belt conveyor are arranged in series in close proximity to each other, and a molded product transfer device is provided adjacent to the second belt conveyor, and the transfer device includes a plurality of molded product transfer devices. a guide rail; a pallet that intermittently moves on the guide rail in a direction transverse to the moving direction of the second belt conveyor; An extruded product made of a cement-based composition in which a group of free rollers are arranged parallel to the moving direction of the second belt conveyor.