JP2010013764A - Weft knitting machine equipped with oil supply apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flat knitting machine equipped with an oil supply apparatus that has a simple constitution and easily can supply an oil to a plurality of oil supply parts. <P>SOLUTION: The oil supply apparatus 6 is arranged at the edge part of a carriage 5 and an oil supply unit 9 is moved along the shaft line of a guide shaft 8 and supplies an oil to a plurality of oil supply parts. The states 12a, 12b, 12c and 12e of a roller 12, respectively correspond to states 10a, 10b, 10c and 10e satisfying each oil supply part of a brush unit 10 by guiding with a guide cam 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a flat knitting machine having an oil supply unit mounted on a carriage and provided with an oil supply device for supplying oil to a knitting member such as a knitting needle.

  Conventionally, in a flat knitting machine, a knitting needle is accommodated in a needle groove arranged in parallel to a needle bed, and a hook on the tip side of the knitting needle is advanced and retracted to a mouth formed on the end side of the needle bed to knit the knitted fabric. Is going. The drive for moving the knitting needle back and forth is performed by mounting a cam on a carriage that reciprocates in the direction in which the needle grooves are juxtaposed, and selectively causing the cam to act on the knitting needle. The knitting needle is driven by the cam with respect to the bat provided on the knitting needle. When the cam acts on the bat, or when the knitting needle is displaced in the needle groove by the action, mechanical sliding friction occurs, so lubrication by refueling is necessary.

Conventional lubrication is often performed manually as part of regular maintenance work at the beginning or end of knitting work with a flat knitting machine. In order to further increase the frequency of lubrication, the flat knitting machine needs to have a lubrication function. As a configuration of a flat knitting machine having a lubrication function, it is conceivable that a cam itself mounted on a carriage and driving a bat such as a knitting needle can be lubricated (see, for example, Patent Document 1). In addition, the oil supply device can be mounted on the carriage separately from the cam, and when the carriage travels along the surface of the needle bed, lubricating oil can be applied to the needle bed (see, for example, Patent Document 2). . Furthermore, the timing of refueling can be controlled (see, for example, Patent Document 3).
JP 2008-7918 A Japanese Patent No. 2530260 Japanese Patent No. 3904828

  In order to increase productivity with a flat knitting machine, it is necessary to increase the speed of knitting. As the knitting speed increases, the need for lubrication for smooth driving increases. When the driving frequency of a knitting member such as a knitting needle increases, even if the lubricating oil is once supplied and becomes in a lubricating state, the lubricating state tends to be canceled unless the lubricating oil is replenished. On the other hand, if the lubricating oil is excessively supplied, the lubricating oil may adhere to the knitted fabric to be knitted and become dirty.

  In Patent Document 1, since oil is supplied to a cam path for guiding a knitting needle bat to perform a knit knitting operation, oil cannot be supplied to other than the knitting needle bat passing therethrough. In patent document 2, since the oil supply location is fixed with respect to the advancing / retreating direction of the knitting needle, it is possible to supply oil only to an object that combines the oil supply locations. FIG. 8 shows an example in which oil is supplied to a knitting member having two bats with two brushes in FIG. In this way, if lubrication is performed from a plurality of locations, smooth lubrication can be achieved even when the knitting speed is increased.

  However, if a plurality of brushes for refueling are provided on the carriage, a space for installation is required on the carriage, the carriage is increased in size and weight, and it is difficult to increase the operation speed. In addition, if the oil is supplied from a plurality of locations, the supply control of the lubricating oil becomes difficult.

  The objective of this invention is providing a flat knitting machine provided with the oil supply apparatus which can also perform oil supply to a some oil supply location easily with a simple structure.

The present invention is a flat knitting machine including an oil supply device including an oil supply unit that supplies oil to a knitting member at an end of a carriage that drives the knitting member with a cam while reciprocating along the surface of the needle bed,
The fueling device
A moving mechanism that moves the oil supply unit so that the distance from the tip side of the needle bed changes, and the oil supply location to the knitting member to be oiled can be changed according to the distance;
A contact / separation mechanism capable of changing the oil supply position from the oil supply unit in the direction of contacting / separating with respect to the needle bed surface according to the oil supply location to be moved by the moving mechanism,
It is a flat knitting machine provided with the oil supply apparatus characterized by including.

In the present invention, the oil supply unit is
An oil supply base that moves so as to change the distance from the mouth side by the moving mechanism;
An oil supply member that can be supplied to an oil supply position of the knitting member to be supplied with oil, and is supported by the oil supply base so as to be capable of displacement in a direction in which the oil base is in contact with or separated from the needle bed surface;
The moving mechanism is
A guide member for guiding an oil supply base along a path including the plurality of oil supply points;
A drive member that drives the oil supply base to move by the guide of the guide member,
The contact / separation mechanism is provided along a guide path by the guide member, and guides the oil supply member so as to come in contact with and separate from the needle bed surface as the moving position of the oil supply base along the path changes. It is characterized by including.

  Further, in the present invention, the range in which the oil supply unit moves by the moving mechanism is a section between two adjacent oil supply locations, and in the middle, the oil supply member is in the needle bed surface rather than the oil supply locations on both sides. It includes a section farther away from

  According to the present invention, the distance from the tip of the needle bed to the top of the needle bed is changed by the moving mechanism, and the oil supply location to the knitting member to be supplied with the oil can be changed. To move one of the bats and select one of the bats for refueling. Since the oil supply position can be changed in the direction of contact with and separated from the needle bed surface by the contact / separation mechanism, the oil supply position can be adjusted so as to appropriately supply oil according to the knitting member to be supplied. Since one oil supply unit can be moved to change the oil supply location and the oil supply position relative to the needle bed surface can be changed, it is possible to easily supply oil to a plurality of oil supply locations with a simple configuration.

  Further, according to the present invention, the drive member can select the fuel supply location by moving the fuel supply base along the route guided by the guide member. Along with the movement, the oil supply member is brought into contact with and separated from the needle bed surface by the cam member, and appropriate oil supply according to the oil supply location can be easily performed.

  Moreover, according to this invention, the area which can isolate | separate the oil supply member from the surface of a needle bed more largely than the oil supply location of both sides is included in the middle of two adjacent oil supply locations. If the oil supply unit is retracted so as not to perform excessive oil supply in this section, wear and damage of the oil supply member can be prevented.

  FIG. 1 shows a flat knitting machine 1 according to an embodiment of the present invention in a cross-sectional configuration from a simplified side surface of a main part. The flat knitting machine 1 knits a knitted fabric by moving a knitting member such as a knitting needle 4 forward and backward in a tooth opening 3 on the tip side of a needle bed 2. The needle bed 2 is high in the side of the tooth opening 3 and is inclined so as to become low when it is separated from the tooth opening 3, but is shown in a horizontal posture for convenience of explanation. In the flat knitting machine 1, the needle bed 2 is provided at a line-symmetrical position with the tooth opening 3 interposed therebetween. By providing the flat knitting machine 1 with a pair of needle beds 2 that are opposed to each other with the tooth opening 3 interposed therebetween, various knitted fabrics can be knitted. The knitting of the knitted fabric is performed while supplying knitting yarn to the knitting needles 4 arranged so as to be aligned in the direction perpendicular to the paper surface with respect to each needle bed 2 through the tooth opening 3. The knitting needle 4 is a cam mounted on a carriage 5 that reciprocates in the direction in which the knitting needle 4 is moved, and is driven so as to advance and retreat in the left and right directions of the figure.

  The oil supply device 6 of the present invention is attached to the end of the carriage 5 in the moving direction, and supplies oil when the carriage 5 moves. The oil supply device 6 is covered with a cover 7, and a guide shaft 8 is accommodated in the cover 7. The guide shaft 8 is supported in the cover 7 so that the direction of the axis is parallel to the advancing and retracting direction of the knitting needle 4 toward the tooth opening 3. Oil supply to the knitting member such as the knitting needle 4 is performed by a single oil supply unit 9 that moves along the axis of the guide shaft 8 so that the distance from the tooth mouth 3 changes. The oil supply unit 9 applies the lubricating oil by bringing the tip of the brush unit 10 into contact with a bat of a knitting member to be supplied with oil. In conjunction with the movement of the oil supply unit 9 along the guide shaft 8, a guide cam 11 is provided so that the tip of the brush unit 10 contacts and separates from the surface of the needle bed 2 and the oil supply position changes. The oil supply unit 9 has a roller 12 that receives guidance while contacting the cam surface of the guide cam 11. In addition, the brush unit 10 uses the thing similar to what is disclosed by patent document 2, for example. In addition, as in the case of Patent Document 2, if the oil supply pump is arranged on the frame side of the flat knitting machine 1 that supports the needle bed 2, the supply of the lubricating oil to the oil supply device 6 is flexible up to the carriage 5. Can be done with tubes. Therefore, detailed description thereof will be omitted.

  Thus, the oil supply device 6 includes an oil supply unit 9 that supplies oil to the knitting member at the end of the carriage 5 that drives the knitting member such as the knitting needle 4 with a cam while reciprocating along the surface of the needle bed 2. . The oil supply unit 9 changes the distance from the tip 3 side of the needle bed 2 so that the oil supply location of the knitting member to be supplied can be changed according to the distance. Move along the axis. As a moving mechanism for moving the oil supply unit 9, a belt drive mechanism is used as will be described later. The guide cam 11 constitutes a contact / separation mechanism that can change the oil supply position from the oil supply unit 9 to be moved in a direction in which it is in contact with or separated from the surface of the needle bed 2 according to the oil supply location. When the oil supply device 6 is used, an oil supply location is selected by the moving mechanism, and the carriage 5 is moved in a state where the oil supply position is changed by the contact / separation mechanism. Appropriate lubrication can be performed by adapting the position of the tip of the brush unit 10 to the lubrication target such as the bat of the knitting member.

  In the needle bed 2, needle plates 21 are erected on the substrate 20 at a constant pitch in a direction perpendicular to the paper surface. A needle groove 22 is formed between the needle plates 21, and a knitting member such as the knitting needle 4 is accommodated in a state that allows sliding displacement to advance and retract to the tooth opening 3. The knitting needle 4 is configured by sequentially combining a needle body 23, a needle jack 24, a select jack 25, and a selector 26 from the mouth 3 side. The needle body 23 is a latch needle having a hook 23a at the tip on the side of the mouth 3 and opening and closing the hook 23a with a latch 23b. A compound needle that opens and closes a hook using a slider separate from the needle body may be used. Each member constituting the knitting needle 4 is provided with bats 24a, 24b; 25a; 26a, 26b, respectively, and receives the action of a cam mounted on the carriage 5. In the oil supply device 6, the positions of these bats 24a, 24b; 25a; 26a, 26b in a state where the knitting needle 4 is removed from the carriage 5 are set as oil supply locations. The selector 26 is also provided with a bat 26c between the bats 26a and 26b. For example, one of the eight illustrated bats 26c is provided to receive the pressing action of the needle selection actuator, and is provided at a different position on each of the eight adjacent knitting needles 4. Such oil supply to the multi-stage bat 26c is performed by moving the oil supply unit 9 to an oil supply location that can be applied collectively to the bat 26c of the selector 26 belonging to two knitting needles 4 accommodated in adjacent needle grooves, for example. You can do it. Further, if a bat to be refueled is approaching by a knitting member such as the knitting needle 4 accommodated in one needle groove, it is also possible to perform refueling collectively from one refueling location.

  The brush unit 10a supplies oil to a butt 26a on the tail end side of the selector 26 as a bat for operating a cam mounted on the carriage 5. The bat 26b on the tip side of the selector 26 is supplied with oil by the brush unit 10 in the state indicated by the solid line. The brush unit 10b supplies oil to the bat 25a of the select jack 25. The brush unit 10 c supplies oil to the bat 24 a near the middle of the needle jack 24. The brush unit 10e supplies oil to the butt 24b on the distal end side of the needle jack 24. At each oil supply location, the extent to which the brush unit 10 is separated from the surface of the needle bed 2 is determined by the guide to the roller 12 by the guide cam 11. For example, the states 12a, 12b, 12c, and 12e of the roller 12 correspond to the states 10a, 10b, 10c, and 10e corresponding to the respective oil supply locations of the brush unit 10, respectively.

  In the section where the brush units 10c and 10e corresponding to the oil supply locations to the bats 24a and 24b of the needle jack 24 are both ends, the brush unit 10d is closer to the needle bed 2 than the brush units 10c and 10e in the middle position. It is greatly separated from the surface by a roller 12d. That is, a plurality of oil supply points are provided in the range in which the oil supply unit 9 moves, and the brush unit 10 as the oil supply member is larger from the surface of the needle bed 2 in the middle of the oil supply points on both sides. Includes sections that guide you to leave. In places such as the brush unit 10d, the oil supply unit 9 can be stopped without refueling. In particular, in the brush unit 10, since there is a risk of wear or damage if the tip of the brush continues to contact the bat, it is desirable to contact and refuel only when necessary and to stop. In addition, as an oil supply member, the injection nozzle etc. which supply oil without contact can also be used.

  In the flat knitting machine 1 shown in the figure, the needle plate 21 on the side of the mouth 3 is thinned to form a movable sinker including a sinker plate 27, a spring 28 and a holding member 29 as disclosed in Japanese Patent No. 4016028. Yes. In this type of movable sinker, the open state and the closed state of the sinker plate 27 are switched by a presser provided on the side of the tooth opening 3 of the carriage 5. In the movable sinker, a type in which opening and closing is switched by a jack that drives a bat with a cam is also used. With this type of movable sinker, the jack can be included in the knitted member, and the position of the bat can be added to the refueling location. The knitting member can include a yarn guide that advances and retreats to the mouth 3 and presses the knitting yarn.

  FIGS. 2 and 3 show the configurations of the oil supply device 6 of FIG. As a moving mechanism that moves the oil supply unit 9 so that the distance from the side of the tooth opening 3 in FIG. 1 changes, a motor 30, a drive pulley 31, a driven pulley 32, and a timing belt 33 with teeth inside are included. The motor 30 is attached to the end of the guide cam 11. The drive pulley 31 is attached to the output shaft of the motor 30. A support base 34 that supports the guide shaft 8 is combined with the guide cam 11. A driven pulley 32 is attached to the end of the support base 34. The timing belt 33 is stretched between the driving pulley 31 and the driven pulley 32.

  Two guide shafts 8 are provided in parallel, and both ends in the axial direction are supported by the support base 34. Stoppers 35 are provided at both ends of each guide shaft 8 to restrict the movement range of the oil supply unit 9. The support base 34 is fixed to the end of the carriage 5 with mounting bolts 36. The oil supply unit 9 includes a base member 40 serving as an oil supply base, a bush 41 and a base connecting plate 42. Each bush 41 includes a ball that is inserted into each guide shaft 8 and disposed at a contact portion with the outer periphery of the guide shaft 8. From the base connecting plate 42, a spring hanging bolt 42a protrudes. With such an oil supply base, the brush unit 10 serving as the oil supply member of the oil supply unit 9 moves so that the oil supply location of the knitting member to be supplied can be supplied with oil.

  The guide shaft 8 is inserted into a bush 41 provided in the base member 40 and guided so as to move along an axial path including a plurality of oil supply points corresponding to the states 10a, 10b, 10c, and 10e of the brush unit 10. Functions as a guide member. A guide rail or the like can also be used as such a guide member. The base member 40 guided by the guide member is driven and moved by the timing belt 33 that functions as a drive member.

  The oil supply unit 9 includes a slide unit 43 for supporting the brush unit 10 so that the brush unit 10 can be displaced in a direction in which the brush unit 10 contacts and separates from the surface of the needle bed 2. A slide connecting plate 44 is attached to the movable part of the slide unit 43, and the roller 12 is also provided. From the slide connecting plate 44, a spring hanging bolt 44a protrudes. A spring 45 is stretched between the spring hook bolts 42a and 44a. Since the spring 45 pulls the roller 12 toward the base member 40, it is urged so that the roller 12 contacts the cam surface of the guide cam 11. Therefore, the guide cam 11 functions as a cam member of a contact / separation mechanism that can change the oil supply position from the oil supply unit 9 in a direction in which the oil supply position is in contact with or separated from the surface of the needle bed 2. The contact / separation mechanism is not based on such a cam member, but it is also possible to use an external signal to change the oil supply position according to the oil supply location using a cylinder or solenoid whose stroke amount can be adjusted. it can.

  The lubricating oil supplied to the carriage 5 from the frame side of the flat knitting machine 1 as described above is supplied to the oil supply unit 9 via the oil supply tube 46. An oil supply tank or an oil supply pump can be provided in the carriage 5. The guide cam 11 and the support base 34 are joined by a joining bolt 47.

  FIG. 4 shows a simplified configuration of the fueling device 6 viewed from the left in FIGS. 2 and 3. In the slide unit 43, the brush unit 10 and the moving plate 43b on the roller 12 side are slidably displaced in the vertical direction in the figure with respect to the fixed plate 43a on the base member 40 side. The brush unit 10 bundles a plurality of brushes 10a and holds the upper end with a holder 10b. A path for guiding the lubricating oil from the oil supply tube 46 to the holder 10b is sealed with a seal ring 10c. Lubricating oil is introduced between the brushes 10a by the holder 10b and guided between the brushes 10a to the tip by capillary action or the like.

  The base member 40 is coupled to the timing belt 33 by the belt presser 48 and is driven so as to move in the axial direction of the guide shaft 8. With such a moving mechanism, the base member 40 is driven from a motor 30 as a drive source via a timing belt 33 as a drive member. Also good. When the drive source is mounted on the base member and self-propelled, depending on the configuration for driving, a roller that contacts the flat surface to generate the driving force or a pinion that meshes with the rack to generate the driving force Etc. are the drive members. Also, a ball screw that serves as both a guide member and a drive member can be used.

  FIG. 5 shows a state where the fixed plate 43a and the moving plate 43b are separated by the slide unit 43 of FIG. In order to smooth the sliding displacement between the fixed plate 43a and the moving plate 43b, the fixed plate 43a includes a ball 43c.

  6 and 7 show the configurations of the guide cam 11 and the support base 34 shown in FIGS. 2 and 3, respectively. 11A and 34A are front views, 11B and 34B are plane views, and 11C and 34C are views viewed from the left side surface. The guide cam 11 has a motor mounting portion 11b for mounting the motor 30 and a screw hole 11c for a joining bolt 47 to the support base 34, as well as a cam surface 11a for guiding the roller 12. The support base 34 includes support holes 34 a and 34 b of the guide shaft 8, an attachment hole 34 c for attaching the guide cam 11 to the carriage 5 with the attachment bolt 36, and a joint hole 34 d for joining the guide cam 11 with the joint bolt 47. The support base 34 is also provided with a driven pulley mounting portion 34e for mounting the driven pulley 32.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a simplified side cross-sectional view of a flat knitting machine 1 including an oil supply apparatus as one embodiment of the present invention. It is a front view of the oil supply apparatus 6 of FIG. It is a top view of the oil supply apparatus 6 of FIG. FIG. 4 is a simplified left side cross-sectional view of the fueling device 6 of FIGS. 2 and 3. It is a top view which shows the state which isolate | separated the slide unit 43 of FIG. It is the front view, top view, and left view of the guide cam 11 of FIG. It is the front view, top view, and left view of the support stand 34 of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Flat knitting machine 2 Needle bed 3 Tooth mouth 4 Knitting needle 5 Carriage 6 Lubrication device 8 Guide shaft 9 Lubrication unit 10 Brush unit 11 Guide cam 12 Roller 24a, 24b; 25a; 26a, 26b Butt

Claims (3)

A flat knitting machine including an oil supply device including an oil supply unit that supplies oil to the knitting member at an end of a carriage that drives the knitting member with a cam while reciprocating along the surface of the needle bed,
The fueling device
A moving mechanism that moves the oil supply unit so that the distance from the tip side of the needle bed changes, and the oil supply location to the knitting member to be oiled can be changed according to the distance;
A contact / separation mechanism capable of changing the oil supply position from the oil supply unit in the direction of contacting / separating with respect to the needle bed surface according to the oil supply location to be moved by the moving mechanism,
A flat knitting machine provided with a fueling device. The refueling unit is
An oil supply base that moves so as to change the distance from the mouth side by the moving mechanism;
An oil supply member that can be supplied to an oil supply position of the knitting member to be supplied with oil, and is supported by the oil supply base so as to be capable of displacement in a direction in which the oil base is in contact with or separated from the needle bed surface;
The moving mechanism is
A guide member for guiding an oil supply base along a path including the plurality of oil supply points;
A drive member that drives the oil supply base to move by the guide of the guide member,
The contact / separation mechanism is provided along a guide path by the guide member, and guides the oil supply member so as to come in contact with and separate from the needle bed surface as the moving position of the oil supply base along the path changes. A flat knitting machine comprising a fueling device according to claim 1.   The range in which the oil supply unit moves by the moving mechanism is a section between two adjacent oil supply locations, and in the middle, the oil supply member is farther away from the needle bed surface than at the oil supply locations on both sides. A flat knitting machine comprising a fueling device according to claim 1 or 2, characterized in that it includes a section.

Images