KR20050009185A - Warp weaving machine - Google Patents

Abstract

PURPOSE: A warp weaving loom contains a fixing device operating on a tension member. Therefore, the warp weaving loom reduces affection generated by interference. CONSTITUTION: A warp weaving loom contains: yarn guiding parts(2) capable of being moved horizontally in a transitional direction by a driving part(21); a pattern stitching bar(1) containing a tension member(12); the tension member set between the driving part and the yarn guiding part; and a fixing device(13) operating on the tension member. The fixing device is a clamp device. The fixing device contains a pressure spring, a tension driving part(20) and a head part(15) operated with an anvil(14). A guiding part(16) is set on an area of the fixing device.

Description

Warp Weaving Machine

The present invention relates to an inclined loom having a plurality of thread guides which are movable left and right in a transition direction using a drive unit and having at least one pattern knitting bar in which a tension member is disposed between the thread guide unit and the drive unit. will be.

Inclined weaving looms of this kind are well known in DE 101 37 601 A1. In warp looms, the thread guides are suspended on wires or wire ropes connected to the tension members along the tension ribbon at both ends so that the same force is applied to both ends of the wire ropes. Since a tension ribbon is wound around the impeller of the drive motor, the force necessary to move the seal guide must be generated. However, the drive motor should not generate the force necessary to pull the spring or another tensioning device. In this case, the tension device is formed of an air cylinder in which the tension is maintained by the pressure of the air.

In this kind of machine, for example, the compressed air supply can be cut off during installation or during operation. Even when the machine is transported from the producer to the consumer, the compressed air is not supplied to the machine. In this state, the tension member cannot maintain its position due to the lack of lateral rigidity. Therefore, there is a risk that the tension members are separated from each other and entangled with each other. This results in an additional cost in the implementation. The tension member must be removed or inserted in place prior to reimplementation. Further, for example, the tension member may be entangled and damaged when replacing the unit bar provided with another division of the seal guide.

It is an object of the present invention to reduce the effects of interference.

1 is a perspective view schematically showing an inclined loom with a tensioning member,

2A and 2B are cross-sectional views schematically showing a warp loom having a plurality of tension members,

3 is a perspective view showing two fasteners;

Figure 4 is an enlarged view showing a rotating roller located at the end of the tension member,

5 is a cross-sectional view taken along the line V-V of FIG.

6 is a cross-sectional view taken along the line VI-VI of FIG. 4.

This object is solved by providing an inclined loom of the kind mentioned at the beginning with a fixing mechanism acting on the tension member.

If there is a risk that the tension on the tension member is greatly reduced or extinguished, the fastener is released. The fixing mechanism firmly fixes the tension member in a predetermined position. Even if gravity acts on the tension member, the tension member cannot be removed at the position. As a result, reimplementation is substantially simpler. Only release the fasteners. This operation is performed after the force or pressure necessary to keep the tension member in tension is generated again. Once the tension member is pulled out, it can no longer be out of its position.

Preferably, the fixing mechanism is formed of a clamp mechanism. This is a very simple embodiment of the fastener. The tension member is simply fixed. The friction force generated at this time is sufficient to fix the tension member in a desired position.

Preferably, the tension member is formed in the form of a ribbon at least in the region of the fastener. The ribbon has the advantage of having two sides that are substantially parallel and flat. In particular, when the fixing mechanism is formed of a clamp mechanism, simple operation is possible. In order to form the required friction surface, only tools with sufficient force acting on both sides of the ribbon should be used.

Preferably, a plurality of tension members are provided and the fasteners act on groups of tension members at the same time. Each tension member is to be provided with an individual fastener. Rather, the tension members may be combined in a group manner and a common fixing mechanism may be used for the plurality of tension members. This can reduce installation space and simplify control. In other words, it means that the fasteners must always be used simultaneously on all tension members, ie on all tension members of at least one group.

Here, the group of tension members is arranged continuously. This is particularly advantageous when the tension member is formed in the form of a ribbon in the region of the fastener. In this case, individual ribbons can be pressed continuously. This operation, when performed with a suitable force that is not too large, ensures that the ribbon is securely held in position.

Here, the guide portion is disposed in the region of the fixing mechanism and the tension member is guided to be parallel to the moving direction of the fixing mechanism. Alternatively, if the fastening mechanism is for example formed as a clamp mechanism, the guide ensures that the ribbon can be laterally released when the ribbon is pressed at the same time. The fastening mechanism ensures with the guide so that the ribbon remains in its position even when releasing the fastening operation.

Preferably, the fastening mechanism acts on a plurality of groups of tension members at the same time and the groups have the same height. For example, two or three groups of tension members can be arranged in succession and thus can be actuated by the same fastener. This can further reduce the space. If the warp loom has a plurality of tension members, for example 64 tension members and a corresponding number of thread guide groups, each of the eight tension members overlaps one another and is arranged in groups and two groups of this kind are continuous If fixed, four fasteners may be required. The sixteen tension members of the two groups can be actuated by one fastener.

Preferably, the fastener is biased in the fixed direction and has a tension drive. In this embodiment, when the auxiliary energy, eg compressed air or current, is extinguished or greatly reduced so that the clamping force of the fixture can no longer be controlled, the fixture is automatically released. For a drop in current, another way to release the fixture should not be found. When the auxiliary energy disappears, the tension member is fixed.

Here, the fixing mechanism is preferably provided with a pressure spring. The pressure spring is a structurally simple member. In operation, ie in the absence of interference, the pressure spring is tensioned, for example by compressed air or magnetic force. When the auxiliary energy is extinguished and thus the pressure spring can no longer be tightened, the tension member is fixed by the fixing mechanism.

According to one preferred embodiment, the fastener has an actuable head that works with the anvil. The head portion can be moved by, for example, the pressure spring described above. Of course, another drive may likewise be used. When the head portion proceeds in the opposite direction to the anvil, the head portion fixes the tension member existing between the head portion and the anvil.

Here, the head portion preferably has a deformable front surface. The deformable front face is adapted to the outside of the tension member and secures the tension member. Since the deformable head portion can compensate for a relatively small height difference between adjacent groups, a plurality of groups of tension members can be fixed by the fastening mechanism.

Preferably, the head portion is formed of a polymer. Polymer plastics have the advantage of being inexpensive. The head part can sometimes be regarded as a wearable part that can be replaced. Polymers, for example polymer plastics, are flexible enough to reduce surface differences when operating the tensioning member.

According to a particularly preferred embodiment, the anvil is movable to the head portion. In this case, both the head portion and the anvil move. Therefore, the tension member is not adjusted too hard by fixing the head portion and the anvil. That is, the load of the tension member is reduced.

Here, it is preferable that the fixing part is provided as a path limiting part of the anvil. The anvil can only be moved to a predetermined position. The position is selected so that the tension member proceeds optimally. In particular, this adjustment operation is limited in the short tension member.

Here, it is preferable that the anvil includes a driving unit having better performance than the driving unit of the head unit. This is achieved by, for example, the head being actuated by, for example, a drive member with a pressure spring while the anvil is actuated by two identically shaped drive members with all two pressure springs corresponding thereto. Can be realized. Thus, it can be seen that the position of the anvil is defined only by the fixing portion and cannot be changed by the force of the head portion.

Preferably, the tension member is provided with a driving part on one side while the other side is guided to the tension member by a rotating roller, and the rotating roller is at least circumferentially circulated by a static fixing member at its lower end. It is provided. The tension member is no longer taut between the two tension members and is fixed only between the distal drive and the other tension member. When the tension member loses tension, the tension member is fixed by the fixing mechanism in the region of the drive portion. In contrast, there is no need to perform a fixing operation at the other end. This is because the tension member is fixed to the rotary roller at the end. This fastening operation is relatively simple in structure. It is simply fixed to the groove of the rotating roller so that the tension member, which can be formed at the end, for example, as a wire rope, does not escape.

Here, it is preferable that a plurality of rotating rollers are arranged adjacent to each other and the gap between the adjacent rotating rollers is smaller than the minimum cross sectional dimension of the tension member in the region of the gap. In this case, since the guide groove of the rotating roller is shielded by the adjacent rotating roller in the area, the tension member cannot detach the rotating roller laterally. Only the outermost rotating rollers require another shielding action.

The invention will be described with reference to the accompanying drawings in accordance with an embodiment of the invention.

1 schematically shows a perspective view of an inclined loom with a pattern weaving bar 1 comprising a thread guide 2. Inclined looms are generally equipped with a plurality of pattern knitting bars. Each patterning bar generally has one or more thread guides 2. The perspective view of the warp loom shown in FIG. 1 is for brief description.

The thread guide 2 is fixed to a wire rope 3. When the wire rope 3 moves to the left and right, the seal guide 2 similarly moves to the left and right in the transition direction. The transition direction extends parallel to the longitudinal direction of the wire rope 3.

At the end (right side of FIG. 1), the wire rope 3 is guided to the restoring portion 5 by the rotary roller 4. The restoration unit 5 generates a tension in the wire rope 3 irrespective of the path length. To this end, the restoring unit 5 may be formed of, for example, a compressed air cylinder.

At the other end the wire rope 3 is connected to a tension ribbon 6 by means of a detachable coupling 7. The tension ribbon 7 is wound around a drum 8 arranged on the outlet rotation shaft 9 of the gear portion 10. The motor 11 is disposed at the inlet side of the gear unit 10. The motor 11 is formed of an electric motor, preferably a servo motor, a permanent magnet excited synchronous motor or a step motor. In principle, any motor controllable with a small angular increment can be used as the motor 11. The control engineering used to control the motor 11 is not shown. The motor 11 and the gear unit 10 together with the drum 8 form a drive unit 21.

The wire rope 3 forms a tension member 12 together with the tension ribbon 6. The tension member 12 is maintained in tension by the restoring portion 5 during operation. The motor 11 operates only for the restoration part 5. Thus, even if the gear portion 10 is associated with the action, the gear portion 10 can be used. This action is always reduced in the same direction regardless of the direction of movement of the tension member 12.

Interference is inevitable not only during operation but also at the implementation stage. For example, when compressed air is supplied to the restoring portion 5, the tension of the tension member 12 is reduced, and there is a risk that the tension member 12 leaves its depicted position.

In order to prevent this risk, a fixing mechanism 13 is provided which is driven when interference occurs. The fixing mechanism 13 has an anvil 14 and acts on the head 15 with the anvil 14. The head portion 15 is made of polymer plastic. The head portion 15 is inclined to a predetermined limit. The guide 16 is fixed to the anvil 14 by two tips 17 and 18 in the form of a yoke, for example. The tip portions 17 and 18 extend in parallel with the moving direction of the head portion 15.

The head portion 15 is driven by a drive cylinder 20 through a tappet 19. Although not shown in detail, the drive cylinder 20 is provided with a pressure spring. The pressure spring urges the head portion 15 in the direction of the anvil 14 when no resistive force is applied. Of course, the tappet 19 is spaced apart from the anvil 14 upon the activation of auxiliary energy, for example compressed air, so that the head 15 has a sufficient distance to the anvil 14 and the ribbon 6. Can move freely with respect to the anvil 14. If the compressed air supply is stopped, not only the action of the restoring unit 5 is reduced, but also the pressure spring disposed on the driving cylinder 20 is no longer compressed, and the tappet 19 is connected to the head portion 15. The head portion 15 is fixed to the anvil 14 at an intermediate position of the ribbon 6 by pushing in the direction of the anvil 14. The guide portion 16 prevents the ribbon 6 from deviating laterally.

Of course, the drive cylinder 20 may be provided with another embodiment. For example, a magnetic coupling may be disposed between the anvil 14 and the head portion 15. In the magnet coupling the head portion 15 is drawn out of the anvil 14 by magnetic force. In this case, similarly, a resistive force generated by the compressed air is generated in the drive cylinder 20. The resistance may occur differently, for example, may be generated by magnetic force as well. The drive cylinder 20 may be formed of an electric linear motor. The electric linear motor can reduce the resistive force formed by the spring in order to maintain the head portion 15 at sufficient intervals with respect to the anvil 14 during operation without interference. However, if interference occurs and the restoring portion 5 can no longer perform the operation, the fixing mechanism 13 is released, and the head portion 15 is ribbon between itself and the anvil 14. Secure (6). As a result, the tension member 12 may leave its position and does not get entangled with another tension member 12 (not shown in detail).

2A and 2B illustrate the interference free operation and the interference operation when using a plurality of tension members. The same parts as in Fig. 1 are denoted by the same reference numerals.

At the end of each tension member 12 is provided its own restoration 5 and at its other end is provided its own drive which can be discerned from the drum 8. The fixing mechanism 13 is not activated in FIG. 2A. Since the head portion 15 has a sufficient distance from the anvil 14, the end of the tension member 12 and the restoring portion 5 and the tension member 12 during operation of the driving portion 21. At the other end the thread guide 2 can move from side to side in the transition direction.

If the force generated by the restoring portion 5 is reduced, there is a risk that, for example, the individual tension members 12 are displaced from their standard positions so that they are overlapped and entangled with each other. This risk is prevented by the fastener 13 shown in the activated position in FIG. 2b. The head portion 15 has moved above the anvil 14 and now secures the tension member 12. More precisely, the head portion 15 secures the ribbon-shaped cross-section 6 of the tension member 12 between itself and the anvil 14. At this time, the guide portion 16 prevents the tension member 12 from being separated laterally. The fastening mechanism 13 acts on a number of tension members at the same time, ie six tension members in the illustrated embodiment. Therefore, since the plurality of tension members 12 are relatively fixed to each other as well as to the warp loom, the tension members 12 do not overlap and entangle with each other.

3 shows an embodiment with two fasteners corresponding to the fasteners 13 of the embodiment shown in FIGS. 1 and 2. The head 15 is movable relative to the static anvil 14. The tension member 12 existing between the anvil 14 and the head portion 15 is not shown here.

Another fixing mechanism 23 is arranged on the same carrier 22 to which the driving cylinder 20 of the fixing mechanism 13 is fixed. The fixing mechanism 23 has an anvil 24. The head portion 25 acts together with the anvil 24, and the head portion 25 is moved by the driving cylinder 20a. The drive cylinder 20a coincides with the drive cylinder 20 of the fixing mechanism 13.

The anvil 24 is movable in the direction of the head portion 25 by two further drive cylinders 20b and 20c. In this case, the driving cylinders 20a, 20b, 20c are implemented in the same manner as the driving cylinder 20 of the fixing mechanism 13. Of course, the anvil 24 can only proceed up to the stationary part 26 correspondingly forming a path length limit. The fixing part 26 is fixed on the carrier 22.

When the compressed air supply is stopped, the entire drive cylinders 20, 20a, 20b, 20c are activated. The anvil 24 is advanced by the two drive cylinders 20b, 20c to the fixing part 26, ie in the opposite direction to the head part 25. At the same time, since the head portion 25 runs in the direction of the anvil 24, the tension member 12 is fixed between the anvil 24 and the head portion 25. As two drive cylinders 20b and 20c act on the anvil 24, the force acting on the anvil 24 is greater than the force acting on the head 25. Although the head portion 25 fixes the tension member 12 to the anvil 24, the anvil 24 remains fixed to the fixing portion 26.

As shown in FIG. 3, the head portion 25 operates two groups of tension members 12, each group of tension members 12 having a plurality of consecutively arranged ribbons. Since the two groups have the same height, all groups of the tension member 12 can be securely fixed. Relatively small irregularities or tolerances can be mitigated by the elasticity or bending strength of the head portion 25.

In view of the operability of the anvil 24, the tension member 12 has the advantage that it must be weakly adjusted, for example, as seen in FIG. 2B. Thus, in particular, stress is reduced in the short tension member 12.

4 to 6 show the situation in which the tension member 12 is located at another end.

The tension member 12 is guided by the rotary roller 4. As can be seen in FIG. 5, each rotary roller 4 is fixed to the carrier member 27 and has an outer circumferential nut 28. The tension member 12 is present in the outer circumferential groove 28. A pin 29 is fixed to the carrier member 27 and positioned at the lowest position in the direction of gravity. Since the pin 29 covers the outer circumferential groove 28, the tension member 12 may not be separated from the outer circumferential groove 28. In addition, since the pin 29 does not work together with the rotary roller 4, no additional friction occurs.

When the tension of the restoring portion 5 decreases, the tension member 12 may slide slightly downward under the influence of gravity. However, the tension member 12 cannot leave the outer circumferential groove 28 around the rotary roller 4. This is because the tension member 12 is interfered with the outer groove 28 by the pin 29.

Another method can be seen from FIG. 6. Adjacent rotating rollers 4 have a spacing a less than the minimum cross sectional dimension of the tension member 12 in this region. Thus, the adjacent rotating roller 4 fixes the tension member 12 between itself.

Adjacent rotary rollers for fixing the tension member 12 are lacking only in the outermost rotary roller 4a. Here, the pin 30 may be provided to shield the outer circumferential groove 28 in a manner that contrasts with the pin 29.

Various aspects can be leaked from the illustrated embodiment. The fixing mechanisms 13 and 23 may fix a group of two or more tension members 12. In addition, since the anvils 14 and 24 may be elastically formed and the heads 15 and 25 may be less flexible or less flexible, inaccuracies to the anvils 14 and 24 are alleviated. In addition, the anvil 24 may be moved or the head 25 may be fixed.

Instead of compressed air used as auxiliary energy, electrical energy may also be used to open the gap between the heads 15, 25 and the anvils 14, 24. When the auxiliary energy is lost, the fixtures 13 and 23 must be released.

As described above, according to the present invention, the effect due to the interference can be reduced by providing the warp weaving loom of the kind mentioned above with the fixing mechanism acting on the tension member.

Claims (17)

In the warp loom having a plurality of yarn guides that can be moved left and right in the transition direction by using a drive unit and having at least one pattern knitting bar in which a tension member is disposed between the yarn guide and the drive unit, Slant loom, characterized in that the fixing mechanism (13, 23) acting on the tension member (12) is provided. The warp loom according to claim 1, wherein the fixing mechanism (13, 23) is formed as a clamp mechanism. The warp loom according to claim 1, wherein the tension member (12) is formed in the form of a ribbon at least in the region of the fixing mechanism (13, 23). 4. The warp loom according to claim 1, characterized in that a plurality of tensioning members (12) are provided and the fixing mechanism (13, 23) acts on a group of tensioning members (12) at the same time. 5. The warp loom according to claim 4, wherein the groups of tensioning members are arranged continuously. 6. The inclined loom according to claim 5, wherein a guide portion (16) is disposed in an area of the fixing mechanism (13), and the tension member (12) is guided to be parallel to the moving direction of the fixing mechanism (13). . 5. The warp loom according to claim 4, wherein the fixing mechanism (13, 23) acts on a group of a plurality of tension members (12) simultaneously and the groups have the same height. The warp loom according to claim 1, wherein the fixing mechanism (13, 23) is biased in the fixed direction and has a tension driving portion (20, 20a, 20b, 20c). 10. The warp loom according to claim 8, wherein the fixing mechanism (13, 23) is provided with a pressure spring. 4. The warp loom according to claim 1, characterized in that the fastener (13, 23) has an operable head (15, 25) that works with anvil (14, 24). 11. The warp loom according to claim 10, wherein the head portion (15, 25) has a deformable front surface. 11. The warp loom according to claim 10, characterized in that the head portion (15, 25) is formed of a polymer. 11. The warp loom according to claim 10, wherein said anvil (24) is movable to said head portion (25). 14. The warp loom according to claim 13, wherein the fixing part (26) is provided as a path limiting part of the anvil (24). 15. The warp loom according to claim 14, wherein said anvil (24) has a drive section that performs better than a drive section of said head section (25). 2. The tension member (12) according to claim 1, wherein the tension member (12) has a drive part (21) on one side while the other side is guided to the restoring part (5) by a rotary roller (4) and the rotary roller (4) is at least gravity. And a circulation groove (nut) shielded by the static holding member (29) at its lower end in the direction. The tension member (12) according to claim 16, wherein a plurality of rotating rollers (4) are disposed adjacent to each other and a gap (a) between the adjacent rotating rollers (4) is in the region of the gap (a). Slant loom, characterized in that less than the minimum cross-sectional dimension of the).