JPS632465Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a continuous automatic material for a blind knitting machine that continuously and automatically supplies material obtained by melting and injecting thermoplastic resin powder or granules such as vinyl chloride (thermoplastic resin powder and granules) to the main body of the blind knitting machine. This invention relates to improvements in feeding devices.

Conventionally, a large number of thread holders are arranged in parallel to hold the warp threads vertically at intervals by guide arms, and a threading guide having an insertion hole between the upper and lower guide arms is arranged in parallel in the middle of the thread holders, A reed is installed between the thread holder and the threading guide, and the threading is carried out from the supply side of the insertion hole via a supply roller by a melt injection material feeder having an inlet for thermoplastic resin powder. A material for a blind knitting machine that cuts the material supplied to a hole to a certain length, pushes it forward with the reed, and rotates the yarn holder half a turn to knit the material with the warp threads for continuous weaving. There is a continuous automatic feeding device.

However, in this type of continuous automatic material supply device, when an operator puts monochromatic thermoplastic resin powder into the inlet of the melt injection material feeder, the melted and injected material is released from the melt injection material feeder. Since the blind knitting machine was automatically fed and woven into the machine, it was particularly suitable for producing blinds made of a single color, but in order to produce blind made of multiple colors, the operator had to It is necessary to feed thermoplastic resin powder of a different color, and in addition, it is necessary to feed the material in a way that changes the color from the desired location where the previous material is knitted in the main body of the blind knitting machine. This was extremely difficult due to the degree of residual thermoplastic resin powder remaining in the container, the amount and timing of adding a new thermoplastic resin powder of a different color, etc. Therefore, conventionally,
In order to produce blinds made of multiple colors, rather than using a continuous automatic material feeder, a pre-modern method was used in which an operator fed pre-made materials of different colors in fixed lengths to the main body of the blind knitting machine. The reality is that this is being done.

Therefore, this idea was developed to automatically switch thermoplastic resin particles of multiple colors to the inlet of the melt injection material feeder one by one in conjunction with the pushing movement of the reed in the main body of the blind knitting machine. The above-mentioned problems have been addressed by providing a continuous automatic feeding device for multi-color material for a blind knitting machine, which can continuously and automatically feed materials by melting and injecting materials from the melt-injection material feeder.

Hereinafter, specific embodiments of this invention will be described with reference to the drawings. In the accompanying drawings, FIG. 1 is a perspective view showing the weaving relationship between the warp and the material, FIGS. 2 and 3 are a thread holder, A partial cross-sectional plan view and a partial cross-sectional side view of the main parts showing the relationship between the through guide and the reed, Figure 4 is a partial cross-sectional side view of the main parts showing the drive system, and Figure 5 is the relationship between the material and the backing plate. A partially sectional front view of the main part showing the
Figure 6 is a partial cross-sectional front view of the main parts showing the supply circuit;
Fig. 7 is a partially sectional front view of the main part showing the granular material supply means, Fig. 8 is a partially sectional plan view of the main part showing the detection means, and Fig. 9 is an enlarged rear view of the main part. .

First, I will explain the method of weaving and the general structure of the automatic weaving machine. In weaving, the warp threads 1, 1 are spread out vertically, the material 2 is inserted between them, and the warp threads 1, 1 are crossed. The material 2 is tied and fixed, but in order to firmly fix the material 2 and prevent the warp threads 1, 1 from shifting horizontally, it is better to simply cross the warp threads 1, 1 vertically. Instead, it is necessary to rotate the top and bottom warp threads 1, 1 180 degrees and tie them (see Figure 1).

Next, the main body of the blind knitting machine provides this kind of movement, and it has a number of thread holders 3 arranged in parallel to hold the warp threads 1, 1 spread out vertically, while the material 2 is inserted and guided between these thread holders 3. This is accomplished by arranging a large number of threading guides 4 in parallel and further providing a reed 5 between the thread holder 3 and the threading guides 4. That is, guide arms 7, 7 are made to protrude vertically from the front end of the thread holder 3, which is rotatably supported on the bracket 6, and the warp threads 1, 1 guided through the inside from the rear end of the thread holder 3 are guided by the guide arms 7, 7. The arms 7, 7 are branched vertically and held. Since an insertion hole 8 through which the material 2 can pass laterally is provided in the center of the passage guide 4, this insertion hole 8
The through guide 4 is installed at a position where the guide arms 7, 7 are located midway between the upper and lower sides.

With this configuration, the material 2 is inserted into the insertion hole 8 from the supply side, and after this is completed, the reed 5 is moved forward (the reed 5 is waiting behind the insertion hole 8).
When the material 2 is pushed away and the thread holder 3 is turned half a turn, the material 2 is bound by the warp threads 1 and 1, and is sewn together. In addition, by making the insertion guide 4, that is, the insertion hole 8, into a vertically split type whose upper half can rotate around the pin 9, the insertion hole 8 can be divided and repaired in the case of incomplete insertion of the material 2, etc. Easy to take measures.

By the way, the above operations are performed by the following drive system.

That is, this is done by rotating a shaft 12 on which a pinion 11 is fixed, which meshes with a gear 10 fixed to a thread holder 3. This is accomplished by meshing a gear 18 fixed to the shaft 12 with a drive gear 17 that rotates in one direction. A ratchet 19 is formed on the drive gear 17, and a pawl 20 that engages with this ratchet 19 is pivotally connected to the pendulum 16 with a pin 21, so that as the cam 14 rotates, the pendulum 1
6. Therefore, the pawl 20 rotates the ratchet 19, that is, the drive gear 17, in one direction by the pitch of the ratchet 19. At this time, ratchet 1
Since one pitch of 9 is set to half a rotation of the gear 18 that meshes with the drive gear 17, one pitch of the drive shaft 13
The rotation is replaced by a half rotation of the thread holder 3. In addition, when the distance between adjacent cores of the thread holder 3 is short, the number of shafts 12 is two, and the meshing of the gear 10 and pinion 11 is shifted forward and backward for each adjacent one to secure the necessary space.

Further, in front of the reed 5, a winding roller 22 for winding up the bound product is installed in contact with an auxiliary roller 23, but the winding roller 22 is also driven by the pendulum 16 mentioned above via the rod 24. It is done. That is, a pendulum 26 is similarly pivotally connected to a ratchet 25 fixed to the winding roller 22, and a claw 27 that can be engaged with the ratchet 25 is pivotally attached to this pendulum 26 with a pin 28, so that each time the pendulum 16 swings, The ratchet 25 and therefore the take-up roller 22 are adapted to rotate in one direction. Note that since a spring 29 is inserted into the rod 24, the winding roller 22 is not necessarily forced to rotate with each swing of the pendulum 16, but can be rotated with a constant winding torque. become.

On the other hand, the movement of the reed 5 back and forth is also controlled by the drive shaft 13 described above.
This is done by a cam 30 fixed to the cam 30. That is, while supporting the reed stand 31 so as to be able to swing freely around the support shaft 32, the roller 33 installed on the reed stand 31
The cam 30 is brought into sliding contact with the cam 30, and the reed 5 is moved back and forth as the cam 30 rotates. Note that the forward movement of the reed 5 is performed by the tensile force of a spring 35 that is stretched between the frame 34 and the reed stand 31, so that when there is a large resistance to the forward movement of the reed 5, it is absorbed. Make it possible.

By the way, the movements of these reeds 5 and thread holders 3 are as follows: First, after the reeds 5 move forward to a certain extent,
The above-mentioned cam 3 is rotated so that the thread holder 3 rotates.
The shapes of 0 and 14 are taken into consideration.

Furthermore, in the case of long products with multiple products,
Since it takes a considerable amount of time to insert the material 2, instead of keeping the drive shaft 13 constantly rotating, the proximity switch 36 detects the end of the insertion, connects the electromagnetic clutch, rotates the drive shaft 13, and inserts the material 2. A method is adopted in which the electromagnetic clutch is disconnected by determining the fixed point of the disk fixed to the drive shaft 13 using a micro switch, etc., to determine the phase at which the cycle has completed. That is, the support shaft 3 is placed on the outside of the through guide 4 and the reed 5 at the final end in the insertion direction of the material 2.
A contact plate 38 that can rotate around the contact plate 38 is provided, and when the material 2 is inserted and hits the contact plate 38, it rotates around the support shaft 37, and its sensing portion 39 is placed in front of the proximity switch 36. located, proximity switch 3
6 is inserted to connect the electromagnetic clutch.

Next, to explain the supply of the material 2, a supply roller 4 consisting of a drive roller 40 and an idle roller 41 is disposed on the upstream side of the insertion hole 8 of the through guide 4.
2, and a melt injection material feeder 43 having an inlet 44 for thermoplastic resin powder on the upper side of the feed roller 42.
Between 0 and 41, the material 2 sent out from this melt injection material supply device 43 is sandwiched and supplied. In this case, the drive roller 40 is positioned below and constantly rotated, and the idler roller 4
1 is pivotally supported by a pin 47 on an arm 46 which is rotatable around a support shaft 45. As a result, arm 4
6 hanging downward, both rollers 40, 4
1 will be in contact, so if you put material 2 between them,
It is transferred in the direction of the passing guide 4 on the downstream side. On the other hand, the end of the arm 46 opposite to the support shaft 45 is suspended from the solenoid 48 by a lift rod 4.
Hang it at 9. Therefore, when the solenoid 48 is activated, the arm 46, that is, the idle roller 41, is lifted and idles, and the supply of the material 2 is stopped.On the other hand, when the solenoid 48 is disconnected, both the rollers 40 and 41 are It will rotate and the supply will continue. Further, the melt injection material supply device 43 has a truss-shaped introduction member 5 at the upper rear end.
The injection mold 52 is fitted into the inner tip of the melt injection cylinder 50 having the introduction port 44 formed by fixing the injection mold 52, and then the delivery screw shaft 53 is inserted concentrically therewith, This screw shaft 5
The power of the motor 54 is transferred to the rear end protrusion of the belt 55.
The thermoplastic resin particles guided from the inlet port 44 are transmitted to the tip by the screw shaft 53, while the thermoplastic resin particles are transferred by the nichrome wire 56 wound around the outer peripheral wall of the melt injection cylinder 50. A conventional structure is used in which the liquid is melted and injected from the gap formed between the injection mold 52 and the molten injection cylinder 50.
Further, in front and behind the supply roller 42, guides 57 and 58 in the shape of lapels are provided in order to guide the melted and injected material 2 to the supply roller 42, or to bridge it from the supply roller 42 to the guide 4. .

By the way, the continuous automatic multi-color material supply device for a blind knitting machine according to this invention has a plurality of colors of thermoplastic resin particles 61a, 61b in the inlet portion 44 from hoppers 62a, 62b which can accommodate each color of thermoplastic resin particles 61a, 61b. ,
The material 2 is knitted with the warp threads 1, 1 each time the reed 5 is pushed through the powder supply means 59, which introduces each color one by one through the valves 64a, 64b which can be opened and closed by expanding and contracting the fluid cylinders 63a, 63b. Detection is performed in relation to the number of materials 2 to be fed, and this detection signal is sent to the corresponding fluid cylinders 63a, 6.
3b.

The powder supply means 59 includes a stirring blade 66 operated by a motor 65 in the introduction port 44, and also includes a stirring blade 66 operated by a motor 65 in the inlet port 44, and a plurality of hoppers 62a, 62b.
7a, 67b are provided, and each spout 67a,
67b is provided with valves 64a and 64b that can be opened and closed by expanding and contracting the fluid cylinders 63a and 63b.

The detection means 60 transmits the power of the drive shaft 13 to which the cam 30 for moving the reed 5 back and forth is connected to chains 68, 69 and a pair of bevel gears 70a, 70.
0b to the rotational shaft 71 for the detection chain, and winding between the driving sprockets 72, 73 fixed to the rotational shaft 71 and the floating sprockets 74, 75 located at a fixed distance from these sprockets. The suspended detection chains 76, 77 are rotated, and an appropriate number of detection object mounting plates 78, 79, 8 each having an L-shaped cross section are attached to the detection chains 76, 77 at a constant pitch.
0 is detected by detection sensors 84, 85, 86 which are rotatable around a sensor shaft 96, and the detection operation of these detection sensors 84, 85, 86 is performed. Detection signals are sent to the corresponding fluid cylinders 63a, 63b and the motor 65 using micro switches 87, 88, 89 having pushers 87a, 88a, 89a that follow the same. This results in
The valves 64a and 64b are opened and closed and the stirring blade 66 is rotated through the corresponding fluid cylinders 63a and 63b, and the thermoplastic resin particles 61 of different colors accommodated in each of the hoppers 62a and 62b are opened and closed.
a, 61b are guided from the spout parts 67a, 67b to the inlet part 44 through the stirring blade 66, and the materials are continuously fed into the material 2 of different colors from the middle of the blind weaving by the melt injection material supply device 43. Automatic supply will occur.

Now, when the material 2, which has been continuously and automatically supplied in this way, has been fed into the insertion hole 8 of the through guide 4, the cutting cutter 90 is operated appropriately to cut it to the required length. For example, if we knit the material 2 with the warp threads 1 and 1 to successively produce blinds made of 126 pieces of material 2 in one circle, each time the reed 5 repeats one circle of back and forth movement 126 times. Since one bamboo blind will be produced in a cycle, if you use red material 2 at the beginning of this one circle and change to white material 2 in the middle, it will be covered in one round trip of the reed 5. Detector mounting plate piece 7
8, 79, and 80 are configured to move by one pitch to the adjacent detected object mounting plate pieces in the rotation direction, and the detected object mounting plate pieces 78, 79, and 80 are moved at the same pitch.
They are attached to each detected chain 76 and 77 so that 126 pieces form one circle. And first,
The detected objects 81 are placed together in one circle of the red-colored control object mounting plate piece 78, that is, in relation to the aforementioned one circle of the back and forth movement of the reed 5.
For example, by attaching 20 to 30 of them, the detection sensor 84 detects the presence of these detection objects 81, and the detection signal sent from the micro switch 87 detects the corresponding red thermoplastic resin powder particles. The valve 64a of the hopper 62a containing the hopper 61a is opened only during that time by the fluid cylinder 63a,
It is guided to the introduction port 44. During this time, the hopper 6 containing the white thermoplastic resin powder 61b
The valve 64b of 2b is closed, and the stirring blade 66 is also not operating. Next, in consideration of the red thermoplastic resin powder particles 61a remaining in the inlet portion 44 and the melt injection cylinder 50, the detection object mounting plate piece controlling the white color is located at a position delayed by that amount. The detected object 82 is detected from the corresponding part of one circle of 79, for example, from 60 to
As a result, the presence of these detection objects 82 is detected by the detection sensor 85, and the corresponding white thermoplastic resin powder 61b is detected by the detection signal sent from the micro switch 88. The valve 64b of the hopper 62b is opened by the fluid cylinder 63b only during that time, and the inlet portion 44 is opened.
Let it guide you. During this time, the valve 64 of the hopper 62a containing the red thermoplastic resin powder 61a
a is closed, and the stirring blade 66 is also not operating. With this, the detected chain 76 completes one circle of rotation and returns to the beginning.

On the other hand, when changing the color of the material from red to white, red thermoplastic resin powder 6
1a remains in the introduction port 44, at the same time, adding white thermoplastic resin powder 61b,
Alternatively, from about one pitch in advance, one of the detection object mounting plate pieces 80 that controls the operation of the motor 65 of the stirring blade 66.
For example, about six detected objects 83 are installed in the circle, and the presence of these detected objects 83 is detected by a detection sensor 86, and a detection signal sent from a micro switch or the like 89 is used to respond to the detection. By operating the motor 65 and rotating the stirring blades 66 to stir the red and white thermoplastic resin particles 61a and 61b at the inlet 44, a screen with a shading in the middle is formed.

Note that the three colors are not limited to the two illustrated colors.
Of course, it is also possible to have a similar configuration with more than one color. In addition, the first detected object 81 in one circle,
Sensors detecting the presence of 82, 83 84, 85, 8
6 to detect, micro switch etc. 87, 88,
If a detection signal is sent from 89 to a timer (not shown) and the timer operates the corresponding fluid cylinders 63a, 63b and motor 65 for a predetermined period of time, a large number of detected objects can be attached to the detected object mounting plate. Not only does it not need to be attached, it also has the advantage of making it easier to change the attachment of the object to be detected when changing to a screen with a different multicolored pattern.

In the figure, 91 is a switching clutch that is convenient for adjusting the timing with the back and forth movement of the reed 5 and initializing one circle; 92 is a manual handle;
3 is a mold for molding the melt-injected material 2 into a fixed shape, 94 is a cooling water tank, and 95 is a stopper that presses the material 2 in conjunction with the arm 46.

Since this invention consists of the above-mentioned configuration, it is only a simple modification of adding powder supply means 59 and detection means 60 to the conventional blind knitting machine, and moreover, it is possible to continuously and automatically feed materials of multiple colors into the main body of the blind knitting machine. This makes it possible to supply fully automated multicolored blinds, leading to significant labor and cost reductions.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
Figure 1 is a perspective view showing the weaving relationship between the warp and the material, Figures 2 and 3 are a partially sectional plan view, a partially sectional side view, and a partially sectional side view of the main parts showing the relationship between the thread holder, threading guide, and reed. Figure 4 is a partial cross-sectional side view of the main part showing the drive system, Figure 5 is a partial cross-sectional front view of the main part showing the relationship between the material and the plate, and Figure 6 is a part of the main part showing the supply area. 7 is a partially sectional front view of the main part showing the powder supply means, Fig. 8 is a partially sectional plan view of the main part showing the detection means, and Fig. 9 is an enlarged view of the main part. FIG. Code, 1... Warp, 2... Material, 3... Yarn holder, 4... Threading guide, 5... Reed, 7... Guide arm, 8... Insertion hole, 42... Supply roller,
43... Melt injection material feeder, 44... Inlet port, 59... Powder supply means, 60... Detection means, 61a, 61b... Thermoplastic resin powder, 6
2a, 62b...hopper, 63a, 63b...
Fluid cylinder, 64a, 64b... valve, 81,
82, 83... Detected object, 84, 85, 86...
detection sensor.

Claims (1)

[Scope of utility model registration request] A large number of thread holders 3 are arranged in parallel to hold the warp threads 1, 1 with guide arms 7, 7 vertically spaced apart from each other, while a threading guide 4 having an insertion hole 8 between the upper and lower guide arms 7, 7 is used to hold the threads. Holder 3
In addition, a reed 5 is installed between the thread holder 3 and the thread guide 4, and an inlet 44 for thermoplastic resin powder is provided from the supply side of the insertion hole 8. The material 2 supplied to the insertion hole 8 by the material supply device 43 via the supply roller 42 is appropriately cut into a certain length and pushed forward by the reed 5, and the thread holder 3 is cut in half. By rotating the material 2, the warp threads 1,
In the continuous automatic material supply device for a blind knitting machine that performs weaving, weaving, and continuous stitching in step 1, the inlet port 44 includes:
Thermoplastic resin particles 61a, 61b of a plurality of colors are guided from hoppers 62a, 62b that can accommodate each color individually through valves 64a, 64b that can be opened and closed by expanding and contracting the fluid cylinders 63a, 63b. Supply means 59, and detected objects 81, 82, 83 that operate in relation to the number of pushing operations of the reed 5 in accordance with the color change of the blinds in a preset pattern.
The sensor 84, 85, 86 detects the presence of the screen and sends this detection signal to the corresponding fluid cylinders 63a, 63b. A continuous automatic feeding device for multi-colored materials for blind knitting machines that enables continuous automatic feeding of materials.