JP2007231463A - Knit fabric pull-down device and knit fabric pull-down unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a knit fabric pull-down device and a knit fabric pull-down unit, which have little restriction on an installation position of a driving part for opening and closing a roller and enabling the size reduction of the whole device. <P>SOLUTION: The knit fabric pull-down 5 for pulling down a knit fabric has a pair of turnable rollers 10, 11 wherein the back-side roller 10 is made to be closed or separated relative to the front-side roller 11 by first and second driving levers 12, 13. The first and second driving levers 12, 13 are movable by an opening and closing drive motor 17. The drive motor 17 is separated from a driving mechanism to open and close a knit fabric guiding plate 8. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a knitted fabric lowering apparatus and a knitted fabric lowering unit for lowering a knitted fabric.

  In a conventional flat knitting machine, opening and closing of a front roller provided in a knitted fabric lowering device and opening and closing of a knitted fabric guide plate for guiding the knitted fabric are performed by a single drive motor. The front roller and the drive motor are connected via a cam mechanism and a link mechanism, and the driving force of the drive motor is transmitted to the front roller via the cam mechanism and the link mechanism to open and close the front roller. The cam mechanism and the link mechanism are respectively disposed at both ends in the axial direction of the front roller, and extend from one end portion in the knitting width direction of the flat knitting machine to the other end portion in order to interlock each cam mechanism and each link mechanism. The shaft members are connected to each other. Prior art documents were not found.

  In the flat knitting machine of the prior art, the front roller is opened and closed and the knitted fabric guide plate is opened and closed by one drive motor. Therefore, the drive motor requires a large driving force, and the drive motor itself is increased in size. Also, in order to avoid interference with the knitted fabric guide plate and to enable driving of both the front roller and the knitted fabric guide plate, the position of the drive motor is restricted, and the drive motor is placed at a position away from the rear roller. Arranged. Since the drive motor is disposed below the rear needle bed, the link mechanism is disposed from below the rear needle bed to below the front needle bed in order to drive the front roller to open and close. Since the link mechanism is thus arranged, when the knitted fabric guide plate is opened and the rear roller is taken out, the rear roller hits the link mechanism. Therefore, when the rear roller is taken out, the rear roller has to be taken out after taking out the front roller, and the workability when taking out the maintenance roller is poor. Further, since each cam mechanism and each link mechanism are respectively connected by a shaft member, a space that can be secured in the flat knitting machine by this shaft member is reduced. Further, the drive motor transmits the driving force to the knitted fabric guide plate via the link member to open and close the knitted fabric guide plate. Therefore, the drive motor needs to be arranged according to the positions of the link member and the knitted fabric guide plate, and the arrangement position of the drive motor is also restricted from this point.

  An object of the present invention is to provide a knitted fabric lowering device and a knitted fabric lowering unit that have a small restriction on the arrangement position of an opening / closing drive unit that drives a roller to open and close and that can be downsized as a whole.

  Another object of the present invention is to provide a knitted fabric lowering apparatus and a knitted fabric lowering unit that have good workability for maintenance eggplants of flat knitting machines.

The present invention is a knitted fabric lowering device disposed below the mouth part of a flat knitting machine having at least a pair of front and back needle beds,
A pair of rotatable front and rear rollers;
A support member that supports the rear roller and displaces the rear roller so that it can approach and separate from the front roller;
An opening / closing drive unit capable of driving the support member in displacement,
The opening / closing drive unit is provided separately from the drive unit for opening / closing a knitted fabric guide plate for guiding the knitted fabric that has been knitted,
Below the rear needle bed, a rear roller, an opening / closing drive unit and a support member are disposed,
A knitted fabric lowering device characterized in that a front roller and a knitted fabric guide plate are disposed below the front needle bed.

The present invention further includes a rotation mechanism that rotates the rear roller in a mechanically interlocked manner with the rotation of the front roller in a state where the rotation drive unit that drives the front roller and the pair of rollers are close to each other. ,
The rotation driving unit is provided above the pair of rollers.

The present invention also provides the knitted fabric lowering device,
A knitted fabric guide plate that can be opened and closed and guides the knitted fabric;
A set-up device capable of setting up a knitted fabric;
An elevating drive device capable of moving the set-up device up and down;
The knitted fabric lowering unit is characterized by having an interlocking mechanism that mechanically interlocks with the raising and lowering of the set-up device and opens and closes the knitted fabric guide plate.

  According to the present invention, when the opening / closing drive unit drives the support member to move, the rear roller approaches or separates from the front roller. Since the opening / closing drive unit that can separate and approach the rear roller via the support member in this way is provided separately from the drive mechanism that opens and closes the knitted fabric guide plate, the required driving force is small, and the conventional technology Any drive unit that can generate a smaller torque may be used, and the open / close drive unit can be made smaller than the conventional technology. Furthermore, the opening / closing drive unit does not need to be disposed at a position where the knitted fabric guide plate can be driven, and the restriction on the position of the opening / closing drive unit in the flat knitting machine can be reduced. As a result, the opening / closing drive unit can be disposed in the vicinity of the rear roller, and a space for disposing an external device disposed outside in the flat knitting machine of the prior art is secured below the rear roller. be able to. Since the external device can be disposed in the flat knitting machine in this way, the overall size can be reduced. By disposing the opening / closing drive unit in the vicinity of the rear roller, the knitted fabric lowering device can be reduced in size.

  Further, a rear roller, an opening / closing drive unit and a support member are disposed below the rear needle bed, and a front roller and a knitted fabric guide plate are disposed below the front needle bed. Thus, when the knitted fabric guide plate is opened and the rear roller is taken out, it is not necessary to take out the front roller as in the prior art, and the rear roller can be taken out easily and maintenance is easy. Similarly, when the knitted fabric guide plate is opened and the front roller is replaced, it is not necessary to take out the rear roller, and the pair of rollers can be replaced independently, and maintenance is easy.

  Further, it is possible to reduce the number of constituent members such as a link member or a shaft member that constitute a link mechanism for transmitting the power of the opening / closing drive unit to the rear roller. This simplifies the configuration and facilitates manufacturing and maintenance.

  According to the present invention, the pair of rollers can be rotationally driven by the rotational drive unit and the rotational mechanism. Further, the rotation drive unit is provided above the pair of rollers. Therefore, when opening the knitted fabric guide plate and maintaining the rear roller or the front roller, the operator puts his hand from below the pair of rollers to work, so that the operator's hand touches the rotation drive unit. Can be prevented.

  According to the present invention, the knitted fabric guide plate is opened and closed by the interlocking mechanism mechanically interlocking with the raising and lowering. Therefore, it is possible to provide an opening / closing drive unit for opening / closing the rear roller via the support member and a drive unit for opening / closing the knitted fabric guide plate separately.

  Hereinafter, a plurality of embodiments for carrying out the present invention will be described with reference to the drawings. Portions corresponding to the matters described in the preceding forms in each embodiment are denoted by the same reference numerals, and overlapping description may be omitted. When only a part of the configuration is described, the other parts of the configuration are the same as those described in the preceding section. In addition to the combination of parts specifically described in each embodiment, the embodiments may be partially combined as long as the combination is not particularly troublesome.

  FIG. 1 is a longitudinal sectional view as seen from the left side of the flat knitting machine 1. FIG. 2 is a longitudinal sectional view as seen from the right side of the flat knitting machine 1. The flat knitting machine is a machine for knitting a knitted fabric, and a plurality of knitting needles are arranged on a pair of front and back needle beds 2 arranged in a letter C. In the present embodiment, the flat knitting machine 1 has a pair of front and back needle beds 2, but may be any flat knitting machine having at least a pair of front and back needle beds, and a flat knitting machine having two or more pairs of front and back needle beds. It may be. The plurality of knitting needles are configured so that their hooks can be advanced and retracted with respect to the tooth opening 3 of the pair of front and rear needle beds 2. In the flat knitting machine 1, the knitted fabric is knitted by moving the hook of the knitting needle back and forth. The flat knitting machine 1 basically has a knitted fabric lowering device 5, an elevating drive device 6, a set-up device 7, and a knitted fabric guide plate 8 arranged in a housing 4 and below a pair of front and rear needle beds 2. It is installed. Further, a control device 9 that is an external device is disposed in the housing 4 of the flat knitting machine 1.

  The knitted fabric lowering device 5 includes a pair of rollers 10, 11, a first drive lever 12, a second drive lever 13, a cam 14, a shaft member 15, a sector gear 16, an opening / closing drive motor 17, and a rotation. A drive motor 18, rotation gears 19a and 19b, interlocking gears 20a and 20b, and a rotation drive motor latching mechanism 21 are included. The pair of rollers 10 and 11 have shaft members 10a and 11a, respectively, and are provided so as to be rotatable around the axis lines L1 and L2 of the shaft members 10a and 11a. The pair of rollers 10, 11 are arranged such that the rear roller 10 is disposed below the rear needle bed 2 a, the front roller 11 is disposed below the front needle bed 2 b, and a knitted fabric that hangs down from the mouth 3 is sandwiched between the rollers. It is a member that pulls down the knitted fabric by moving. The shaft members 10a and 11a are arranged so that their axis lines L1 and L2 are parallel to the knitting width direction X (hereinafter referred to as “X direction”) of the flat knitting machine. A first drive lever 12 and a second drive lever 13 are rotatably connected to portions on one end side and the other end side in the axial direction of the shaft member 10a of the rear roller 10, respectively.

  The first drive lever 12 is generally formed in a T shape. Each end 12b, 12c, 12d of the first drive lever 12 is provided with a shaft member 10a of the rear roller, a cam follower 25, and a tension spring member 26a. Specifically, the cam follower 25 is rotatably provided at the end portion 12b provided with the shaft member 10a and the end portion 12c on the opposite side via the T-shaped intersection portion 12a of the first drive lever 12. ing. One end of the tension spring member 26 a is hooked on the remaining end 12 d of the first drive lever 12. The other end of the tension spring member 26a is hooked to a spring force adjusting member 27a for adjusting the spring force that the tension spring member 26a applies to the first drive lever 12.

  The second drive lever 13 is generally formed in an L shape. A shaft member 10 a and a tension member 26 b of the rear roller 10 are provided at the end portions 13 b and 13 c of the second drive lever 13. One end of the tension spring member 26b is latched to the end 13c, and the other end is latched to a spring force adjusting member 27b for adjusting the spring force applied to the second drive lever 13 by the tension spring member 26b. Has been. The first drive lever 12 and the second drive lever 13 are connected and fixed by a connecting shaft member 28 whose intersecting portion 12a and bent portion 13a extend over the X direction of the flat knitting machine. The connecting shaft member 28 is provided in the housing 4 so as to be rotatable around the axis L3. The surface pressure applied to the knitted fabric by the pair of rollers 10 and 11 is adjusted by adjusting the spring force of the tension spring members 26a and 26b.

  The cam follower 25 is in contact with the cam surface portion 14 a of the cam 14. The shaft member 15 extends in the X direction, is provided so as to be rotatable around its axis L4, and the cam 14 is fixed thereto. A sector gear 16 formed in a substantially semicircular shape is further fixed to the shaft member 15. The sector gear 16 meshes with a gear 17 b provided on the output shaft 17 a of the opening / closing drive motor 17. The sector gear 16 is provided with a sensor (not shown) for detecting the angular displacement amount of the sector gear 16.

  The first drive lever 12, the second drive lever 13, the cam 14, the shaft member 15, the sector gear 16, and the opening / closing drive motor 17 are below the rear needle bed 2a and below the rear roller 10. It is arranged. In the present embodiment, the opening / closing drive motor 17 is disposed in the vicinity of the rear roller 10. The first and second drive levers 12 and 13 correspond to support members, and the configuration including the opening / closing drive motor 17, the sector gear 16, the shaft member 15, and the cam 14 corresponds to the opening / closing drive unit 61.

  Rotating gears 19a and 19b are provided at one end and the other end of the shaft member 11a of the front roller 11, respectively. A rotation gear 19 a provided at one end of the shaft member 11 a meshes with a gear 18 b provided on the output shaft 18 a of the rotation drive motor 18. The rotation drive motor 18 is provided above the rotation gear 19a, and is disposed on the left side of the flat knitting machine 1 from the rotation gear 19a, that is, on the front side in FIG. At one end and the other end of the shaft member 10a of the rear roller 10, interlocking gears 20a and 20b are provided via Oldham couplings, respectively. The interlocking gear 20a meshes with the rotating gear 19a, and the interlocking gear 20b meshes with the rotating gear 19b. The rotation drive unit 62 corresponds to the rotation drive motor 18 and the rotation gears 19a and 19b, and the interlocking gears 20a and 20b correspond to the rotation mechanism.

  The reverse rotation prevention mechanism 21 is a mechanism that prevents the rotation drive motor 18 from reverse rotation, and includes a latch member 30 and a latch mechanism drive unit 31. The latch member 30 is formed in a generally U shape, and its bent portion 30a is supported so as to be swingable. One end portion 30b of the latching member 30 is formed in a bowl shape, and is formed so as to be able to latch the teeth of the gear 18b of the rotational drive motor 18. The other end portion 30 c of the latching member 30 is connected to the moving node member 31 a of the latching mechanism driving unit 31. The latching mechanism drive unit 31 further includes a solenoid 31b, and the moving node member 31a is fitted into the solenoid 31b so as to be slidable in the vertical direction (hereinafter referred to as “Z direction”).

  The raising / lowering driving device 6 is a device that drives the set-up device 7 up and down, is disposed below the rear needle bed 2a, and includes an up-and-down driving motor 33, a transmission mechanism 34, and two lifting and lowering transmission mechanisms 35. As for the raising / lowering drive motor 33, the transmission mechanism 1st gear 34a of the transmission mechanism 34 is being fixed to the output shaft. The transmission mechanism 34 further includes a transmission mechanism second gear 34b and a chain 34c, and the chain 34c is stretched across the transmission mechanism first gear 34a and the transmission mechanism second gear 34b. The transmission mechanism second gear 34b is provided with a transmission mechanism shaft member 36 extending from one end in the X direction of the flat knitting machine 1 to the other end. The axis of the transmission mechanism second gear 34b and the axis L5 of the transmission mechanism shaft member 36 coincide with each other.

  The transmission mechanism shaft member 36 is provided with lower elevating pulleys 35a of the elevating transmission mechanism 35 at one end and the other end in the axial direction. The axis of each lower elevating pulley 35a coincides with the axis L5 of the transmission mechanism shaft member 36. Each elevating transmission mechanism 35 further includes an upper elevating pulley 35b and an elevating timing belt 35c. Each upper elevating pulley 35b is disposed substantially vertically above each lower elevating pulley 35a. An elevating timing belt 35c is stretched over the two elevating pulleys 35a and 35b on the lower elevating pulley 35a and the upper elevating pulley 35b.

  The set-up device 7 includes two base bodies 39 and a set-up comb 40. The flat knitting machine 1 is provided with two guide members 41. The two guide members 41 are columnar members extending in the Z direction, and are disposed on one end side and the other end side of the flat knitting machine 1 in the X direction. A stopper 42 is formed at the lower end of each guide member 41. The two base bodies 39 are inserted into the respective guide members 41 and configured to be slidable in the Z direction with respect to the guide members 41. Each base 39 has a portion of one surface portion 39a in the front-rear direction Y (hereinafter referred to as “Y direction”) meshed with and engaged with each elevating timing belt 35c. The other surface portion in the Y direction of each base body 39 forms a cam surface portion 39b. A set-up comb 40 extending from one base 39 to the other base 39 is provided between the two bases 39. The set-up comb 40 has a flat comb bed 43 extending in the X direction, and a plurality of set-up needles 44 can be slidably displaced in the Z direction in a plurality of comb teeth grooves formed in the comb bed 43, respectively. It is provided and configured. The set-up needle 44 is a compound needle composed of, for example, a needle body and a slider. The two base bodies 39 are provided at one end and the other end of the comb bed 43 in the X direction. The set-up device 7 is arranged such that the plurality of set-up needles 44 are arranged substantially vertically below the tooth opening 3. The set-up comb 40 is further provided with a motor 45. The motor 45 is a motor for moving the slider up and down.

  The knitted fabric guide plate 8 is a plate-like member extending in the X direction, and is generally formed in an arc shape in the Z direction. The knitted fabric guide plate 8 is disposed below the front needle bed 2b so as to guide the knitted fabric outward. Further, the housing 4 has a large opening on the front side, and a knitted fabric guide plate 8 is provided so that the configuration in the flat knitting machine 1 is not exposed to the outside through the opening. The knitted fabric guide plate 8 is a member that guides the knitted fabric knitted in the opening. The knitted fabric guide plate 8 is rotatably supported by rotating shaft members 50 and 51 at both ends in the X direction near the other end in the Z direction. The pivot shaft members 50 and 51 are provided with interlocking mechanisms 52, respectively. The interlocking mechanism 52 is provided at both the left and right ends of the flat knitting machine 1.

  Both the left and right interlocking mechanisms 52 have the same configuration, and include a base portion 52 a formed in a Y shape, a first cam follower 53, and a second cam follower 54. The base 52a has an upper end 52b that is detachably connected to the Z-direction intermediate portion of the knitted fabric guide plate 8, and the rotary shaft members 50 and 51 are connected to the Y-shaped intersection 52c. A first cam follower 53 is provided at an end 52d of the base 52a on the base 39 side. Further, a spring member 55 is provided at the remaining end portion 52e of the base portion 52a. The spring member 55 rotates the knitted fabric guide plate 8 in the opening direction, and applies a spring force to the base portion 52a to bring the first cam follower 53 into contact with the cam surface portion 39b of the base body 39. Further, the base 52a is formed with a branch 52f extending toward the base 39 between the upper end 52b and the intersection 52c, and a second cam follower 54 is provided at the tip 52g. Further, a stopper portion 56 is provided between the upper end portion 52b of the base portion 52a and the intersecting portion 52c. The stopper member 56 abuts against a blocking member 57 provided on the housing 4 to prevent the knitted fabric guide plate 8 from rotating.

  Further, a control device 9, a so-called control box, is disposed in the housing 4 of the flat knitting machine 1. The control device 9 is a device for controlling each configuration of the flat knitting machine 1 such as the knitting operation of the flat knitting machine 1 and the yarn feeding speed. The control device 9 is disposed on the left side in FIG. 1 from the rear needle bed 2a, that is, on the rear side. The knitted fabric lowering unit 60 corresponds to a configuration including the knitted fabric lowering device 5, the lifting drive device 6, the set-up device 7, and the knitted fabric guide plate 8.

  FIG. 3 is an enlarged left side view of the knitted fabric lowering device 5 in a state where the pair of rollers 10 and 11 are closed. FIG. 4 is an enlarged left side view of the knitted fabric lowering device 5 in a state where the pair of rollers 10 and 11 are open. Below, operation | movement of the knitted fabric lowering apparatus 5 of the flat knitting machine 1 comprised in this way is demonstrated. First, the operation of opening the pair of rollers 10 and 11 in the closed state will be described. When the opening / closing drive motor 17 is driven from the closed state and the sector gear 16 is rotated about one axis L4, the cam 14 is rotated in conjunction with the sector gear 16. When the cam 14 rotates, the cam follower 25 that is in contact with the cam surface portion 14a of the cam 14 moves along the cam surface portion 14a, and the first drive lever 12 swings around one axis L3. When the first drive lever 12 swings, the second drive lever 13 swings in conjunction with the connecting shaft member 28. As the first and second drive levers 12 and 13 swing, the rear roller 10 moves away from the front roller 11. The position sensor detects the angular displacement amount of the sector gear 16. When the detected angular displacement amount reaches a predetermined angular displacement amount, the control device 9 determines that the pair of rollers 10 and 11 are opened, stops the driving of the opening / closing drive motor 17, and the pair of rollers 10 and 11. Is kept open.

  In this manner, with the pair of rollers 10 and 11 open, the lifting drive motor 33 is driven, and the lower lifting pulley 35 c is rotated via the transmission mechanism 34. Accordingly, each timing belt 35c travels in one direction, and the base 39 of the set-up device 7 is raised. As the base body 39 rises, the first cam follower 53 moves along the cam surface portion 39b, and the connecting member 52 rotates to one side around the axis L6 of the rotating shaft members 50 and 51 by the spring force of the spring member 55. To do. Since the upper end portion 52b of the base portion 52a is connected to the knitted fabric guide plate 8, when the base portion 52a rotates, the top end portion 8a of the knitted fabric guide plate 8 covers the set-up needle 44 from above. From the closed state, the tip 8a transitions to an open state where the set-up needle 44 is not covered. In the open state, the first cam follower 53 is detached from the cam surface portion 39b, the stopper portion 56 abuts against the blocking member 57, and the knitted fabric guide plate 8 is prevented from rotating. In the open state, when an undesired load is urged by the knitted fabric guide plate 8 and the connecting member 52 rotates around the axis L6, the second cam follower 54 contacts the cam surface portion 39b, and the knitted fabric guide plate 8 It prevents the closed state from the open state.

  In such an open state, when the set-up device 7 is further raised by the elevating drive device 6, the set-up needle 44 reaches the tooth opening 3, and the set-up state is enabled. When the lifting drive motor 33 is reversely rotated from this state, the timing belt 35c travels in the other direction, and the base 39 is lowered. When the set-up needle 44 is positioned below the tip end portion 8 a of the knitted fabric guide plate 8, the first cam follower 53 contacts the cam surface portion 39 b of the base 39. When the base body 39 is further lowered, the first cam follower 53 is moved along the cam surface portion 39b, and the connecting member 52 is rotated around the axis L6 of the rotation shaft members 50 and 51 to the other. As a result, the knitted fabric guide plate 8 changes from the open state to the closed state. By driving the rotation drive motor 18 in this closed state, the front roller 11 rotates via the rotation gears 19a and 19b, and via the interlocking gears 20a and 20b engaged with the rotation gears 19a and 19b. As a result, the rear roller 10 rotates. An Oldham coupling is provided between the rear roller 10 and each interlocking gear 20a, 20b, and the rear roller 10 can be rotated via each interlocking gear 20a, 20b. In this manner, the knitted fabric guide plate 8 is opened and closed in conjunction with the lifting operation of the set-up device 7.

  The knitted fabric guide plate 8 can be detached from the upper end portion 52b of the base portion 52a of the interlocking mechanism 52 by manual operation, and further rotated to one side around the axial direction L6 from the open state to expose the inside of the flat knitting machine 1. it can. By exposing the inside of the flat knitting machine 1 in this way, maintenance work such as removal of the rear and front rollers 10 and 11 can be performed.

  Next, the operation of closing the pair of rollers 10 and 11 in the open state will be described. In the operation of closing the pair of rollers 10 and 11 in the open state, the output shaft 17a of the opening / closing drive motor 17 is rotated in the opposite direction to that in the opening direction, so that the cam 14 is rotated in the opposite direction. 2 The drive levers 12 and 13 swing in the opposite direction, and the rear roller 10 approaches the front roller 11. The control device 9 determines whether or not the pair of rollers 10 and 11 is closed based on the angular displacement amount of the sector gear 16 detected by the position sensor. A pair of rollers 10 and 11 are maintained in a closed state.

  Below, the effect which the knitted fabric lowering apparatus 5 and the knitted fabric drawing-out unit 60 which are comprised in this way show is demonstrated. According to the knitted fabric lowering device 5 of the present embodiment, when the opening / closing drive motor 17 swings and displaces the first and second drive levers 12 and 13, the rear roller 10 approaches or separates from the front roller 11. To do. The opening / closing drive motor 17 that enables the rear roller 10 to be separated and approached via the first and second drive levers 12 and 13 is provided separately from the drive mechanism that opens and closes the knitted fabric guide plate 8. A drive unit that requires a small driving force and can generate a torque smaller than that of the prior art may be used, and the opening / closing drive motor 17 can be made smaller than that of the prior art. Furthermore, the opening / closing drive motor 17 does not need to be disposed at a position where the knitted fabric guide plate 8 can be driven, and restrictions on the position of the opening / closing drive motor 17 in the flat knitting machine 1 can be reduced. As a result, the opening / closing drive motor 17 can be disposed in the vicinity of the rear roller 10, and therefore, an external device that is disposed outside in the prior art flat knitting machine, in this embodiment, the control device 9 is disposed. This space can be secured below the rear needle bed 2a. Thus, by securing a space below the rear needle bed 2a, the control device 9 can be disposed in the housing 4 of the flat knitting machine 1, and the overall size can be reduced. By disposing the opening / closing drive motor 17 in the vicinity of the rear roller 10, the knitted fabric lowering device 8 can be reduced in size.

  Further, a rear roller 10, an opening / closing drive motor 17 and first and second drive levers 12 and 13 are disposed below the rear needle bed 2a, and a front roller 11 and a knitted fabric guide plate 8 are disposed below the front needle bed 2b. ing. Thus, when the knitted fabric guide plate 8 is opened and the rear roller 10 is taken out, it is not necessary to take out the front roller 11 as in the prior art, and the rear roller 10 can be easily taken out and maintenance is easy. . Similarly, when the knitted fabric guide plate 8 is opened and the front roller 11 is replaced, it is not necessary to take out the rear roller 10, and the pair of rollers 10 and 11 can be replaced independently, and maintenance is easy. .

  Furthermore, it is possible to reduce the number of constituent members such as a link member or a shaft member that constitute a link mechanism for transmitting the power of the opening / closing drive motor 17 to the rear roller. This simplifies the configuration and facilitates manufacturing and maintenance.

  According to the knitted fabric lowering device 5 of the present embodiment, the pair of rollers 10 and 11 can be rotationally driven by the rotational drive motor 18, the rotational gears 19a and 19b, and the interlocking gears 20a and 20b. A rotation drive motor 18 is provided above the pair of rollers 10 and 11. Therefore, when the knitted fabric guide plate 8 is opened and maintenance is performed on the rear roller 10 or the front roller 11, the operator puts his hands from below the pair of rollers 10 and 11 so that the operator's hand can rotate. Touching the motor 18 can be prevented.

  According to the present invention, the knitted fabric guide plate 8 is opened and closed by the interlocking mechanism 52 mechanically interlocking with the raising and lowering of the set-up device 7. Therefore, it is realized that the opening / closing drive motor 17 that opens and closes the rear roller 10 via the first and second drive levers 12 and 13 and the lifting drive motor 33 that opens and closes the knitted fabric guide plate 8 are separately provided. Can do.

FIG. 2 is a longitudinal sectional view as seen from the left side of the flat knitting machine 1. 2 is a longitudinal sectional view as seen from the right side of the flat knitting machine 1. FIG. It is a left view which expands and shows the knitted fabric pulling-down apparatus 5 of a state in which a pair of rollers 10 and 11 are closed. It is a left view which expands and shows the knitted fabric pulling-down apparatus 5 in a state where a pair of rollers 10 and 11 are open.

Explanation of symbols

DESCRIPTION OF SYMBOLS 5 Knitting fabric lowering device 6 Lifting drive device 7 Knitting device 8 Knitting fabric guide plate 10, 11 Roller 12 First drive lever 13 Second drive lever 19a, 19b Rotating gear 20a, 20b Interlocking gear 60 Knitting fabric lowering unit 61 Opening / closing Drive unit 62 Rotation drive unit

Claims (3)

A knitted fabric lowering device that is disposed below the mouth part of a flat knitting machine having at least a pair of front and back needle beds,
A pair of rotatable front and rear rollers;
A support member that supports the rear roller and displaces the rear roller so that it can approach and separate from the front roller;
An opening / closing drive unit capable of driving the support member in displacement,
The opening / closing drive unit is provided separately from the drive unit for opening / closing a knitted fabric guide plate for guiding the knitted fabric that has been knitted,
Below the rear needle bed, a rear roller, an opening / closing drive unit and a support member are disposed,
A knitted fabric lowering apparatus, wherein a front roller and a knitted fabric guide plate are disposed below the front needle bed. A rotation drive unit that drives the front roller, and a rotation mechanism that rotates the rear roller mechanically interlocking with the rotation of the front roller in a state where the pair of rollers are close to each other;
The knitted fabric lowering apparatus according to claim 1, wherein the rotation driving unit is provided above the pair of rollers. The knitted fabric lowering device according to claim 1 or 2,
A knitted fabric guide plate that can be opened and closed and guides the knitted fabric;
A set-up device capable of setting up a knitted fabric;
An elevating drive device capable of moving the set-up device up and down;
A knitted fabric lowering unit comprising an interlocking mechanism that mechanically interlocks with the raising and lowering of the set-up device to open and close the knitted fabric guide plate.

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