JPS60118510A - Groove machining device of conveyor belt - Google Patents

Abstract

PURPOSE:To attain high precision, improve work efficiency, and reduce labor by running a traveling bogie with a cutter along a copying rail with the same guide track as the bottom shape of a machining groove so that it can be laterally shifted by a groove pitch. CONSTITUTION:A traveling bogie 30 is run to the left along the guide track 26 of a copying rail 25 via a motor 45, a chain 47, sprockets 46, 43, 41b, and a chain 42, and a conveyor 50 to be machined is cut with an electrothermal cutter 37 to form a groove. After the cutting of a striple of groove is completed, a motor 45 is stopped at the left end of a shift frame 20, the handle 24a of a rotary shaft 24 for the feed mechanism of the shift frame 20 is manually rotated by predetermined times, a screw bar 21 is rotated by the predetermined pitches, and the shift frame 20 is shifted along a slide shaft 13 by one groove pitch. Next, the traveling bogie 30 is run to the right to cut out a groove. Accordingly, groove machining can be performed with high precision and high efficiency.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor belt groove machining device, and in particular, a movable frame that is suspended so as to be movable in the length direction of a fixed frame is provided with a movable frame that is movable in the lengthwise direction of a fixed frame. A workpiece conveyor belt is mounted in the same length direction as the fixed frame by attaching a training rail with a guide track and mounting a running cart with a vertically installed cutter so that it can run on the guide track of the training rail. This method mechanically cuts grooves in the width direction at a constant pitch on the surface of the blade.

Conventionally, when a belt conveyor is used to convey a slurry-like material made by moistening powder or granules in a medium such as water, a conveyor belt with grooves in the width direction provided at a constant pitch on the surface of the cover rubber for drainage is used. It is used. When cutting such drainage grooves into a conveyor belt, first mark lines in the width direction of the conveyor belt surface at a predetermined pitch, and then place an electric cutter on hand against a ruler along the marked lines. The work involves moving the pieces and manually cutting them one by one. However, in the case of a long conveyor belt with short and short groove pitches, the number of drain grooves to be machined may be as large as 2,000 to 3,000.
Machining such a large number of drainage ditches by hand not only consumes a great deal of time and effort, but also requires a uniform shape because it is difficult to machine all drainage ditches with precision. There is a problem in that the appearance of the product becomes poor and the value of the product is lost. In addition, both ends of the drain groove must be machined into a smooth arc shape from the inside of the side edge of the conveyor belt, and the cutter must be reapplied and cut at the start and end ends. Because it doesn't happen,
There is a restriction that processing cannot be performed in one operation.

As a solution to the above-mentioned problems caused by manual labor, there is a method of forming drain grooves using a mold during vulcanization, but the length, width, groove pitch, etc. of the drain grooves depend on the purpose of each conveyor belt. Therefore, it is necessary to prepare various molds and replace them with the specified mold each time the shape and pitch of the drain groove differs, as well as the manufacturing cost of the mold and the time required to replace the mold. Considering this, there is a problem that it is uneconomical and lacks practicality.

This invention was made to solve all of the above problems, and an object of the invention is to provide a processing device that can mechanically cut grooves on a conveyor belt with high precision. The purpose of is.

To provide a conveyor belt groove machining device with high work efficiency and reduced labor.

That is, as shown in the embodiments and drawings to be described later, the present invention includes a fixed frame 10ff on which the conveyor belt 50 to be processed is placed, and the bottom surface shape of the groove 56 in the width direction of the conveyor belt 50 to be processed is the same as that of the fixed frame 10ff. Shape guide trajectory 2
A pair of training rails 25 having 6 are attached to the fixed frame 10.
A movable frame 20 mounted parallel to the width direction of the fixed frame 100 opposite to each other in the length direction is suspended so as to be movable in the length direction of the fixed frame 10 via a feeding mechanism,
The training rail 250 of the movable frame 20 is connected via a traveling drive mechanism to the traveling carriage 30' on which the cutter 67 is vertically installed.
The fixed frame 1 is mounted on the guide track 26 so as to be movable.
Each time the cutter 67 of the traveling carriage 600 cuts a groove in the width direction on the surface of the conveyor belt 50 to be processed, which is placed in the same direction as the length direction of The present invention relates to a conveyor belt groove machining device characterized in that the belt 50 is moved by predetermined groove pinches in the length direction of the belt 50.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a front view showing an embodiment of the invention, and FIG. 2 is a front view showing an embodiment of the invention.
FIG. 2 is a sectional view taken along line 8-1 in FIG. 1;

In the above figure, reference numeral 10 indicates a fixed frame, and on the floor stand 11 of the fixed frame 10, a part of the conveyor belt 50 to be processed in the length direction can be placed in a flat state over the entire width. It has become.

A pair of front and rear beams 12 of the above-mentioned fixed frame 10 include:
A pair of slide shafts 16 arranged parallel to the length direction (front-back direction) of the fixed frame 10 at appropriate intervals are connected to the bearings 14.
A movable frame 20 is movably suspended from the slide shaft 16. This moving frame 20
is screwed through a nut (not shown) to a threaded rod 21 supported by the upper beam 12 of the fixed frame 10 via a bearing 15. The length of the fixed frame 10 is adjusted by a feeding mechanism configured to mesh with a main bevel gear 26 at one end of a rotating shaft 24 rotatably supported by a bracket 16 of the upper beam 12, and a handle 24a is fixed to the other end of the rotating shaft 24. It is designed to be able to move a predetermined length in the horizontal direction.

A pair of training rails 25 are attached to the movable frame 20, which are opposed to each other in the length direction of the fixed frame 10 and are parallel to the width direction of the fixed frame 10. This training rail 25 is provided with a guide track 26 along its length. The portion of the guide track 260 excluding both end portions is a horizontal straight linear portion 27, and an upwardly curved arc portion 28 is formed at both end portions, and the bottom surface of the groove to be processed into the conveyor belt as a whole. It has the same cross-sectional shape in the width direction of the conveyor belt.

''--A traveling carriage 60 is mounted on the moving frame 20 on the guide track 26 of the training rail 25 through a cam follower 61. As shown in FIGS. 3 and 4, the detailed structure of the traveling truck 60 is such that a cam follower 61 is rotatably mounted on a pair of left and right support plates 62 attached to both sides of the traveling truck 60. learning rail 25
The guide rollers 66 that are removably fitted into the guide track 26 of the rail 2 and that are attached to the four corners of the traveling trolley 60 are
5 in contact with the inner wall surface.

A linear actuator unit 4 is attached to the lower surface of the traveling truck 60, and the linear actuator 6
An electrothermal cutter 67 held by a holder 36 is removably attached to the rod 65 of No. 4 with a set screw 68. A deceleration motor (not shown) is incorporated in the linear actuator 64, and the rod 65 is moved up and down via the deceleration mechanism. The electric heating cutter 67 is electrically connected via a cable 39a to an electric heating coil 69 installed on the traveling cart 60.
9 to heat it.

Further, chain holders 40 are attached to both the left and right ends of the traveling truck 60, and are supported by the upper and lower parts of the columns 29a, 29+) at both the left and right ends of the moving frame 20. Both ends of the chain 42 are connected to the chain holders 40 (see Fig. 1). A variable speed motor 45 for forward and reverse rotation is installed on the right end column 29b (g) of the moving frame 20, and a sprocket 46 fixed to the rotating shaft of the variable speed motor 45 and a sprocket 4l of the right end column 29b are installed on the right end column 29b (g).
b and the sprocket 46 coaxially fixed,
The chain 47 is hung endlessly. The traveling drive mechanism configured as described above allows the traveling carriage 60 to travel back and forth while being guided by the guide track 26 of the training rail 25 of the moving platform 20. In FIG. 2, the number 48 indicates a sprocket that supports the chain 42 connected to the traveling carriage 60 at an intermediate position of the moving frame 20.
It is.

Next, an explanation will be given of the operation when cutting the grooves of the conveyor belt using the groove force cutting device configured as described above.

[7JI] The eco-conveyor belt 50 is placed flat on the bottom of the floor table 11 with its length direction matching the length direction of the fixed frame 10.

Prior to starting the groove machining work, the moving frame 20 is moved along the slide shaft 16 via the feeding mechanism,
It is stopped at the front end position of the fixed frame 10 (the right end in FIG. 2).

The traveling trolley 30 is connected to the train rail 25 via a traveling drive mechanism.
The moving frame 20 is moved along the guide track 26 and stopped at the right end position of the moving frame 20 (FIG. 1). moving frame 20
The traveling carriage 60 at the right end position is moved by the cam follower 62 by the circular arc portion 28 of the guide track 26 of the training rail 25.
is forcibly lifted and tilted inward, and in response to this state, the electrothermal cutter 67 rotates outward from its vertical position, increasing the distance between the cutting edge and the conveyor belt 50 to be processed. .

Although the blade type of the 'Kakenetsu 2 cutter 67 can be used with both double-sided blades and single-sided blades, the case where double-sided blades are used will be explained first.

The linear actuator 64 of the electrothermal cutter 67 is driven to move the electrothermal cutter 67f up and down via the rod 65 of the linear actuator 64, and the height of the cutting edge corresponds to the thickness of the conveyor belt 50 to be processed. Adjust to match.

After the above preparation work is completed, the cutting work begins.

Driving the traveling drive variable speed motor 45 of the traveling trolley 60,
The sprocket 46 is rotated in the normal direction (clockwise in FIG. 1), and the chain 47 that is hooked to the sprocket 46 is used to rotate the sprocket 41b coaxial with the sprocket 46 of the right end support 29b. Chain 42'f hooked to the supports 29a and 29b at both ends: Rotate clockwise. The cam follower 62 causes the traveling cart 60 to roll on the guide mL path 26 of the training rail 25.
The vehicle runs to the left in Figure 1 while being guided by. As the carriage 60 moves leftward, the electric cutter 67 moves along the same trajectory as the guide track 26 of the training rail 25. That is, the cutting edge of the electrothermal cutter 67 is located above the surface of the conveyor belt 50 to be processed at the right end position of the conveyor belt 50 to be processed;
After cutting into the surface of the conveyor belt 50 and rotating while cutting an arcuate groove and returning to the original vertical position, it advances toward the left end of the conveyor belt 50 to be processed while cutting a horizontal linear groove. When the electrothermal cutter 67 approaches the left end of the conveyor belt 50 to be processed, it rotates outward symmetrically to the right end position and advances while cutting an arcuate groove, so that the cutting edge touches the surface of the conveyor belt 50 to be processed. move upward away from

At the same time as the first groove cutting is completed through the above steps, the drive of the variable speed motor 45 is temporarily stopped, and the traveling carriage 60 is moved to the left end position of the moving frame 2o in the same manner as in the right end position. Leave it tilted inward and wait.

Next, the handle 24a of the rotating shaft 24 for the feed mechanism of the moving frame 20 is manually rotated by a predetermined number of rotations, and the driven bevel gear 2 that is engaged with the main bevel gear 26 of the rotating shaft 24 is rotated manually.
2, rotate the threaded rod 21 by a predetermined number of pitches,
The movable frame 20 is moved along the slide shaft 16 to the rear end side of the fixed frame 10 (to the left in FIG. 2) by a length corresponding to the pitch number of the threaded rod 21 (pinch of the Mue groove).

At the same time as the moving frame 20 finishes moving, the traveling trolley 60
The variable speed motor 45 is driven in the reverse rotation direction to cause the traveling trolley 60 to travel rightward in FIG.

As the traveling trolley 60 moves to the right, the electric cutter 67
The conveyor belt 50 to be processed moves from the left end position to the right end position following the trajectory of the training rail 250 and the guide track 26, and performs the second clear cutting.

In the following, the moving frame 20 is moved once, and the traveling trolley 60 is moved back and forth? This is repeated in order to cut the third and subsequent grooves at a predetermined pitch.

In this way, the movable frame 20 is connected to the fixed frame 10.
After moving to the rear end position (left end in FIG. 2), the conveyor belt 50 to be processed is moved to the front end 1llll of the fixed frame 10.
1 (to the right in FIG. 2), the movable frame 20 is subsequently moved toward the front end of the fixed frame 10 by a predetermined distance, and the traveling carriage 60 is reciprocated in the same manner as described above. Let me, electric cutter 67
Cut the sound cleanly.

By repeating the above procedure, grooves are machined over the entire length of the conveyor belt 50 to be processed.

The operation when a single-sided blade is used as the blade type of the electrothermal cutter 37 is as follows.

The cutting of the groove by the electrothermal cutter 67 is performed during the forward movement of the traveling carriage 60 as it travels from the right end position of the movable frame 2o to the left end position.

The electric-heated cutter 37 starts moving from the right end of the conveyor belt 50 to be processed, finishes cutting the groove to the left end, and when the cutting edge leaves the surface of the conveyor belt 50 to be processed upward, the electric-heated cutter 37 linear actuator 6
4 to raise Londro 5, and electric cutter 3
Make the cutting edge of No. 7 higher than the set height when cutting the groove.

In this state, the traveling carriage 30i is caused to move backward to the right end position of the moving frame 2o, so that the cutting edge of the electrothermal cutter 67 does not come into contact with the surface of the conveyor belt 50 to be processed during the backward stroke of the traveling carriage 6o.

In the moving frame 20, the traveling cart 3o is the moving frame 20.
After the cutting edge of the electrothermal cutter 67 separates from the surface of the conveyor belt 5o to be processed, it is moved to the rear end side of the fixed frame 10 by a predetermined groove pinch.

When the traveling carriage 60 has retreated to the starting point of the moving frame 20, the linear actuator 64 is lowered so that the cutting edge of the heat-forming cutter 67 is equal to the setting surface, and then the traveling carriage 60 starts moving forward. and then cut the next groove.

In this way, when using an electric cutter with a single-sided blade, the
In addition to being able to adjust the blade edge of the electric cutter with peace of mind, #
The movable frame differs from the double-sided electric-heated cutter in that it is moved at the end of the forward stroke of the traveling carriage or at the start of the next forward stroke.

In the above embodiment, the rotating shaft of the feeding mechanism of the moving frame is operated with a manual handle, but instead of the manual handle, the rotating shaft can be rotated using a full rotational drive device such as a motor. You can also.

Although the electrothermal cutter of the above embodiment is configured to be moved up and down by a linear actuator, it is also possible to use a mechanism for moving up and down other than the linear actuator. In addition, when using an electric heat type cutter with double-sided blades, the vertical movement mechanism of the electric heat type cutter is omitted and only a removable removal mechanism is provided. It is also possible to replace it with an electric cutter having a predetermined length.

Incidentally, instead of the electric heating type cutter of the above embodiment, a cold heating type cutter can also be used.

FIG. 5 is a cross-sectional view of a conveyor belt that has been grooved by the above-mentioned groove processing device, and FIG. 6 is an enlarged cross-sectional view of a portion of the conveyor belt in FIG. 5 cut along the longitudinal center line. It is a diagram. In the above figure, reference numeral 51 indicates a cover rubber, and 52 indicates a canvas layer. The cover rubber 51 has a horizontal if K'M-shaped part 57 having the same bottom shape as the guide track of the training rail, and a horizontal if K'M-shaped part 57 on both sides thereof. Upward arcuate portion 5
U-shaped grooves 56 consisting of 8 are cut in the width direction at a predetermined pitch. In addition, after cutting the above-mentioned grooves 56 in this conveyor belt, drain holes 56 are bored on the longitudinal center line, penetrating from the lower surface of the conveyor belt to the bottom surface between adjacent grooves and penetrating the surface. Further, flanges 54 are bonded to both side edges of the surface of the conveyor belt to prevent the conveyed material from falling.

When the slurry-like material is conveyed by the second conveyor belt, the liquid contained in the second material flows along the groove 56 and is discharged to the outside from the drain hole 56.

In the case of the actual example am i+lJ, the part of the guide track of the training rail excluding the arcuate parts at both ends is made into a horizontal straight part, or the 1θ-linear part is made from the arcuate part at both ends toward the center. It can also be formed to have a downward slope. In this case, the drainage function of the grooves of the conveyor belt can be more effectively performed.

In addition, when cutting items with different lengths of processing grooves, such as when the width of the conveyor belt to be processed is different.

It is sufficient to prepare several types of training rails with different guide track lengths and to replace the training rails as necessary.

Furthermore, when cutting a conveyor belt to be processed with grooves of different widths, the cutter may be replaced with a blade type having a different width.

In addition, the shape of the groove itself on the conveyor belt to be processed is not limited to the U-shape as in the above example, but a cutter with a 7-shape, a square-shape, etc. can be used to cut a groove of any shape. 9.

As explained above, the present invention movably suspends a movable frame in the length direction of the fixed frame on which the processed conveyor belt is placed, and has the same shape as the processed groove in the width direction of the processed conveyor belt. A full moving rail frame tyc having a guide track is installed, a traveling cart with a vertical cutter is mounted so that it can run on the guide track of the rail,
Each time the cutter on the traveling cart cuts a groove in the width direction of the conveyor belt to be processed, the groove having the same shape as the guide track of the rail, the traveling cart is cut in the length direction of the conveyor belt to be processed via the moving frame. It is configured to move by groove pitch. Therefore, according to the present invention, the grooves of the conveyor belt can be cut at a predetermined width direction length every predetermined pinch by mechanical operation, so that the grooves can be cut into uniform shapes with high precision. This makes it possible to manufacture a grooved conveyor belt with no defects in appearance and high quality as a second-hand item.

In addition, according to this invention, not only can the effort required when cutting a conveyor belt be reduced to almost nothing compared to conventional manual work, but it can also be done in a short time even when a long conveyor belt is cut. Since it is possible to carry out cutting operations in the grooves, a groove machining device can be obtained in which the efficiency of one operation is dramatically improved.

[Brief explanation of drawings]

FIG. 1 is a front view showing an embodiment of the invention, and FIG. 2 is a front view showing an embodiment of the invention.
Figure 1 is a side view taken along the line 8--3, Figure 3 is an enlarged front view of the traveling truck, Figure 4 is an enlarged side view of the traveling truck, and Figure 5 is
A cross-sectional view of the conveyor belt, FIG. 6, is an enlarged longitudinal cross-sectional view taken along the longitudinal centerline of the conveyor belt of FIG. 25 is a training rail, 26 is a guide track, 6o is a traveling truck, 67 is a cutter, SL+ is a processed conveyor belt,
56 is a processed groove. Patent Applicant Yokohama Rubber Co., Ltd. Agent Patent Attorney Tetsuya Mori Patent Attorney Yoshiaki Naito Patent Attorney Shimizu Seiji Kajiyama

Claims (4)

[Claims] (1) A pair of training rails are provided with a fixed frame on which the entire conveyor belt to be processed is placed, and have a guide track having the same shape as the bottom surface of the groove to be processed in the width direction of the conveyor belt to be processed.
A movable frame that is parallel to the width direction of the fixed frame and facing the length direction of the fixed frame is suspended so as to be movable in the length direction of the fixed frame via a feeding mechanism, and the cutter is A vertically installed traveling cart is mounted so as to be able to run on a guide track of a training rail of the movable frame via a traveling drive mechanism, and a conveyor belt to be processed is placed in the same direction as the length direction of the fixed frame. Each time a groove in the width direction is cut on the surface of the conveyor belt by the cutter of the traveling truck, the conveyor belt to be processed is moved by a predetermined groove pinch in the length direction of the conveyor belt by a full movement frame of the traveling truck. Conveyor belt groove processing equipment. (2) The conveyor belt groove machining device according to claim 1, wherein the guide track of the training rail slopes downward from both ends toward the center. (3) The conveyor belt groove machining device according to claim 1 or 2, wherein the cutter is attached to a traveling carriage so as to be movable up and down. (4) The conveyor belt grooving device according to any one of claims 1 to 3, wherein the cutter is removably attachable to a traveling carriage.