JPH0111439Y2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an improvement of a bias cutter for cutting fabric.

<Prior art> A sticky tire cord fabric made of steel wire or nylon cord coated with raw rubber, which is used as a strength member for pneumatic tires, is cut into a predetermined shape using a bias cutter as shown in FIGS. 5 and 6. Cut to angle and length.

That is, FIG. 5 is a plan view of a conventional bias cutter, and FIG. 6 is a side view of the same bias cutter. 1 and then stopped. In this state, the fabric 01 is cut into a predetermined shape by the cutter 02, and the cut fabric piece 03 is carried out in the direction of the cutting line (in the direction of the arrow in the figure) by the carry-out conveyor 04 to a position where it will not interfere with the next fabric piece. .

By repeating the above steps, the fabric 01 is cut one after another. In addition, in the figure, 05
is an electric motor for driving the unloading conveyor 04, 0
6 is a sprocket tied to the output shaft end of electric motor 05, 07 is a sprocket tied to the protruding end of drive pulley 08, and 09 is both sprockets 06, 0.
A chain connecting 7 and 010 is a driven pulley.

By the way, in order to carry in the fabric 01, it is necessary to transport the cut fabric piece 03 as described above to a position where it does not hit the fabric 01. Especially when the cutting angle θ is small (θ
<30°), there is a problem that the transfer time becomes longer, one cycle time becomes longer, and productivity decreases.

The present inventor has generally invented a bias cutter for fabric cutting which can effectively solve the above problems, shorten the cutting cycle time, and improve productivity (Japanese Patent Application No. 58-223504). This fabric cutting bias cutter has upper and lower carry-out conveyors, supports each carry-out conveyor via a link mechanism so that they can move vertically in parallel, and is equipped with a drive mechanism that moves both carry-out conveyors up and down at the same time. It is characterized by the following. That is, a preferred embodiment thereof is shown in FIGS. 7 to 9.
To explain based on the figures, Fig. 7 is a partially cutaway plan view of the bias cutter, Fig. 8 is a partially cutaway side view of the bias cutter, and Fig. 9 is a sectional view taken along the line A-A in Fig. 8. be.

In the figure, 8 and 8' are arranged vertically in parallel,
This is a lower conveyor frame, and at one end of these upper and lower conveyor frames 8, 8' there are drive pulleys 3,
3', and driven pulleys 9 and 9' are horizontally and rotatably supported at the other end via bearings (not shown), and between the drive pulley 3 and the driven pulley 9, the conveyor belt 1 is A conveyor belt 2 is wound between the pulley 3' and the driven pulley 9'. And upper and lower conveyor frames 8,
As shown in the figure, electric motors 7, 7' are fixed to one end of 8', and sprockets 5, 5' connected to the output shaft ends of each electric motor 7, 7' and the ends of the drive pulleys 3, 3'. The sprockets 4 and 4' are connected by chains 6 and 6', respectively.

On the other hand, two frames 18 are erected on the base 25 at a predetermined distance apart.
The upper and lower two sets of shafts 13 and 13' have bearings 14,
14'(14' is not shown) and is rotatably supported. Pulleys 17 and 19 are connected to one end of the husband's shafts 13 and 13',
Links 15 and 15' are fixed to the other end so as to rotate together. Links 15 and 15' are provided 90 degrees out of phase with each other, and each link 1
5, 15' are the upper and lower conveyor frames 8,
Shafts 16, 16' projecting from both sides of 8' are pivotally mounted. As a result, the upper and lower conveyor frames 8 and 8' are supported by the frame 18 via the links 15 and 15' so that they can move up and down parallel to each other.

A tuning shaft 22 is rotatably supported between both frames 8 via a bearing 23 and a bearing 24 mounted on a base 25, and a sprocket 20 is connected to both ends of the tuning shaft 22. The sprocket 20 and the sprockets 17 and 19 are connected by a chain 21.

Furthermore, the base 25 at the center position of the tuning shaft 22
A bracket 30 is protruded from the top as shown in FIG. 9, and a cylinder 29 is attached to the bracket 30.
One end of the piston rod 29a is pivotably attached to a pin 31, and a clevis 28 is screwed to the tip of a piston rod 29a extending from the other end of the cylinder 29. A pin 27 is attached to one end of the lever 26 fixed to the tuning shaft 22.
It is pivotally mounted for free rotation.

On the other hand, in FIG. 9, reference numeral 35 designates a table on which the fabric 32 to be carried is placed, and a base 36 provided at the end of the table has a lower blade 3 on the edge as shown in the figure.
4 is fixed, and the lower end edge of a disc-shaped upper blade 37 which is rotationally driven by an electric motor 38 is adjacent to this.

In addition, in FIGS. 7 and 8, 10 and 12 are conveyors for sending the cut fabric pieces to the next process.

Next, the function of this bias cutter will be explained.

When the electric motors 7, 7' are driven, the sprockets 5,
5', chain 6, 6' and sprocket 4, 4'
The drive pulleys 3, 3' are rotationally driven via the drive pulleys 3, 3', thereby driving the conveyor belts 1, 2. Also, by driving the cylinder 29, its piston rod 2
When 9a is advanced or retracted, the tuning shaft 22 is moved forward or backward via the lever 26, and the sprocket 20 connected thereto causes the sprockets 17 and 19 to rotate simultaneously via the chain 21. As a result, the shafts 13, 13' are simultaneously rotated, and this rotation is converted into mutually parallel vertical movement of the upper and lower conveyor frames 8, 8' via the links 15, 15'. Since the links 15 and 15' are out of phase by 90 degrees as described above, when the conveyor belt 2 approaches the upper blade 37 and the lower blade 34 as shown in FIG. upper blade 37
and located away from the lower blade 34.

As shown in FIG. 9, the fabric 32 carried on the table 35 by a carrying device (not shown) is carried onto the conveyor belt 2 close to the table 35 to ensure a predetermined cutting angle and cutting length. In this state, the upper blade 37 and the lower blade 34 run along the cutting edge while rotating to cut into a predetermined shape.

On the other hand, during the cutting operation on the conveyor belt 2, the previously cut fabric pieces 11
is transported on the conveyor belt 1 and transferred onto the waiting conveyor 10.

Next, by driving the cylinder 29, the conveyor belt 1 is moved to the position where the conveyor belt 2 was previously located close to the table 35, and the conveyor belt 2 is moved to the position 2' in FIG. In this state, the cutting operation is performed on the conveyor belt 1, and the fabric piece 33 on the conveyor belt 2 is transferred onto the waiting conveyor 12.

Thereafter, the same action as above is repeated, and the fabric 32 is cut one after another, and the conveyor 10,
12 alternately.

<Problems to be solved by the invention> According to the fabric bias cutter generally invented by the present inventor, two sets of delivery conveyors are provided,
Since the fabric pieces are conveyed onto one set of conveyors and cut during cutting, the cut fabric pieces are conveyed by the other conveyor, so that the cutting cycle can be significantly shortened and productivity can be improved. However, in the embodiment described above, the sprockets 17, 19, the sprocket 20, and the chain 21 are used to simultaneously move the upper and lower conveyor frames 8, 8' up and down, so that the upper and lower conveyor frames 8, 8' are horizontally moved. The degree cannot be adjusted independently, and for this reason,
When moving the conveyor up and down or running it,
The fabric piece meandered, and there was a limit to the cutting accuracy and width accuracy of the fabric piece.

<Means for Solving the Problems> The object of the present invention is to provide a bias cutter for fabric cutting that solves the above-mentioned problems by independently adjusting the levelness of the upper and lower delivery conveyors. The structure of the fabric cutting bias cutter is to cut the fabric and transport the cut fabric pieces in the direction of the cutting line on a delivery conveyor, and the delivery conveyors are disposed above and below, and each delivery conveyor is One end of each of two parallel links is rotatably connected to both ends of the frame, and a pin fixed to the other end of the parallel link is rotatably supported by the fixed frame. , one end of a drive link is further fixed to each of the pins,
The other ends of the two drive links at each end of each conveyor are pin-coupled via turnbuckles, and at least one pair of drive links of the upper and lower conveyors is pin-coupled with a connecting rod, and this connecting rod is used to drive a cylinder, etc. It is characterized by being moved up and down by a device.

<Function> When the connecting rod is moved up and down, the upper and lower drive links pin-connected to it rotate, and at the same time, the links that are integrally fixed thereto rotate, and accordingly, the unloading conveyors arranged above and below move. At the same time, it will move upward or downward. Therefore, while being carried in and cut on one carrying-out conveyor, the cut fabric pieces can be carried out on the other carrying-out conveyor, and the cutting cycle is shortened because there is no waiting time.
Further, by rotating the turnbuckle, the horizontality of both delivery conveyors can be adjusted independently, leading to improvement in the cutting accuracy of the fabric pieces and the width accuracy of the fabric pieces.

<Example> An example of the present invention is shown in FIGS. 1 to 4.
Incidentally, the same parts as those of the fabric cutting bias cutter shown in FIGS. 7 to 9 described above are given the same numbers and detailed explanations will be omitted.

As shown in the figure, conveyor frames 8, 8'
Among the links 15, 15' that support the rotation center axis 55, 55' of the one on the left in FIGS. is fixed, while one end of the drive link 53, 53' is fixed to the rotation center shaft 56, 56' of the right one of the links 15, 15' supporting the conveyor frames 8, 8'. ing. The rear ends of the dogleg-shaped drive links 52, 52' are pin-coupled to the connecting rod 51.
1 and a link 50 fixed to the tuning shaft 22 are pin-coupled. Therefore, when the synchronizing shaft 22 is driven and rotated, the link 50 rotates and the connecting rod 51 moves up and down, and the drive links 52, 52' rotate accordingly, resulting in the rotation of the link 50 as shown in FIGS. As shown in FIG. 2, the conveyor frames 8 and 8' move up and down simultaneously. On the other hand, the drive link 52,
52' The tips of the drive links 53, 53' are pin-coupled via turnbuckles 54, 54', respectively, and by rotating the turnbuckles 54, 54', the inclination of the conveyor frames 8, 8' is adjusted. It is now possible to do so. Note that the other configurations are the same as those shown in FIGS. 7 to 9.

<Effects of the invention> As explained above in detail, the bias cutter for fabric cutting of the present invention can move up and down the unloading conveyors disposed above and below at the same time. During cutting, the cut fabric piece can be carried out by the other carrying-out conveyor, and the cutting cycle can be greatly shortened. Moreover, since the horizontality of each delivery conveyor can be adjusted independently,
By preventing the fabric piece from meandering, the cutting accuracy and width accuracy of the fabric piece can be improved.

[Brief explanation of the drawing]

Figures 1 to 4 relate to one embodiment of the present invention, and Figures 1 and 2 are sectional views taken along line B-B in Figure 4, and
4 is a partial side view of the bias cutter, FIG. 5 is a plan view of a conventional bias cutter, FIG. 6 is a side view of the same bias cutter, and FIG. 7 is a partial plan view of the bias cutter. 8 is a partially cutaway plan view of a bias cutter previously invented by the present inventor, FIG. 8 is a partially cutaway side view of the same bias cutter, and FIG. 9 is a sectional view taken along the line A--A in FIG. 8. In the drawing, 1 and 2 are conveyor belts, 8 and 8' are conveyor frames, 11 and 33 are fabric pieces, 15 and 15' are links, 18 is a frame, and 2
2 is a synchronized shaft, 29 is a cylinder, 32 is a fabric, 34 is a lower blade, 37 is an upper blade, 52, 52', 5
3 and 53' are drive links, and 54 and 54' are turnbuckles.

Claims (1)

[Scope of utility model registration request] In a fabric cutting bias cutter that cuts fabric and carries out the cut fabric pieces in the direction of the cutting line on an output conveyor, the above-mentioned output conveyors are respectively disposed at the top and bottom, and two cutters are installed at both ends of the frame of each output conveyor. One end of each of the parallel links of the book is rotatably connected, and a pin fixed to the other end of the parallel link is rotatably supported on a fixed frame, and each of the pins has a One end of the drive links is fixed, the other ends of the two drive links at each end of each conveyor are pin-coupled via turnbuckles, and at least one set of drive links of the upper and lower conveyors are pin-coupled with a connecting rod. A bias cutter for fabric cutting, characterized in that the connecting rod is moved up and down by a drive device such as a cylinder.