JPH0730494B2 - Flat knitting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a knitting machine, particularly a flat knitting machine, as set forth in the preamble of claim 1.

[Prior Art and its Problems] In the known flat knitting machine of the type described above, a knitting needle that is not selected and thus not operating does not reach the knitting cam groove due to the switchable cam portion. Is guided past the stitch cam at the end of the knitting cam part, so that the knitting needle makes a certain amount of pull-down movement depending on the position setting of the stitch cam (West German Published Patent Application No. 1760025). ). In this case, there is a possibility that the stitches already in the hook of the knitting needle may be cut, and there is a risk that the empty knitting needle may be damaged by fatigue, which is inconvenient.

In another known flat knitting machine of the above type, a flexible selector platin (jack) is provided so that the butt can be settled in the needle bed, but in this flat knitting machine, it is not selected and therefore operates. The knitting needle that has not been performed is guided over the entire cam width. In this case, the knitting needle must likewise carry out a longitudinal movement in the region of the stitch cam (West German published patent specification 28 40 254). This type of flat knitting machine is provided with a push-down cam for the selector platen. In this case, however, the needle bed must be deep in the area of the selector platen to be flexed, and a complicated structure is required. Is.

The object of the present invention is to be selected irrespective of whether the knitting machine has a switchable cam part or a selector platin that can be settled in the needle bed. An object of the invention is to provide a knitting machine of the type mentioned at the outset, in particular a flat knitting machine, in which it has been easily avoided that the knitting needles which have not been activated and therefore have not been activated have to be moved along the stitch cam.

[Solution Means and Actions of the Invention of the Present Application] The above-mentioned problems can be solved in the knitting machine of the type described above, particularly in the flat knitting machine, by the constituent features described in the characterizing part of claim 1.

In the present invention, the knitting needle is made up of two parts, and when the knitting needle is not selected and therefore not operating, the stitch forming part of the knitting needle is in the stop position until the relevant knitting needle is selected again. Staying is achieved by a simple coupling device. As a result, there is a risk that the stitch will be cut,
The risk of fatigue damage to empty knitting needles is avoided. This coupling device is not mechanically wasteful in itself, and the additional provision of the coupling actuator in the cam carriage does not come at extra cost. The solution according to the invention can be used not only in flat knitting machines with switchable cam parts, but also in flat knitting machines which are actuated by a selector platin that can be settled on the needle bed when selected.
The solution according to the invention can also be used for other known machines which additionally have a needle butt-push down cam and which require a relatively deep needle bed.

According to West German Published Patent Specification No. 936649, it is known to connect a double-ended needle to a selector platin in a flat double-headed (links-links) knitting machine, but this connection is made from one needle bed to the other. It only serves to transfer the knitting needles to the needle bed. Therefore, also in this case, the problem of the present invention exists and has not yet been solved.

In the preferred embodiment of the invention, the coupling device is formed by a lever pivotally supported on one needle part and engageable on the other needle part by a form-fitting connection. This is a very simple mechanical connection possibility. In this case, the lever is formed so as to release and / or lock the crosspiece arranged on the cam carriage, the element such as the cam, and the like.
The purpose of these elements is to rock the lever as it passes over the knitting needle by the cam carriage. For the purpose, both movements of the lever, namely the disengagement movement and the locking movement, are forced by the corresponding elements. In this case, the lever has two arms.

The locking element and / or the decoupling element may be arranged fixedly, but they may also be switchable for other selection possibilities.

Decoupling occurs after passage of the stitch cam, for example, at the same location as the cam or at a position where the knitting needle is between the cam height and the deepest down position. In contrast, the locking of the selected knitting needle takes place before or even in the area of the needle delivery groove. That is, it can be performed before or during the delivery of the selected knitting needle.

According to another embodiment of the present invention, after decoupling of the two parts of the knitting needle, in order to keep the two parts apart from each other,
The subsequent delivery movement of the movement-forming part of the knitting needle takes place. In this case, the movement-imparting part of the knitting needle is expediently pulled down to the area where this part reaches below the linear path of the cam part when the associated knitting needle is no longer selected.

EXAMPLES Details of the present invention will be apparent from the following detailed description of the invention in which the present invention is described in detail with reference to the illustrated examples.

The illustrated knitting needle connecting device mainly comprises a connecting device 21 arranged on the knitting needle 11 and a connecting actuating device 55 arranged on the cam carriage 36 of the flat knitting machine. The coupling device separates the stitch forming part 12 of the knitting needle 11 in the form of a latch needle from the motion imparting part 13 of this knitting needle, whereby the unselected or inactive knitting needle 11 passes through the cam groove. In particular, it is possible to easily prevent having to move past the stitch cam.

In FIGS. 1 and 2, a latch needle 11 having a needle head 14 is shown.
Is composed of two parts. That is, this latch needle has a stitch forming portion 12 having a needle head 14 and a motion imparting portion 13 having a needle butt 16. As usual, in each needle bed 17 of the flat knitting machine, a large number of adjacent knitting needles are arranged.
11 are respectively guided in one needle groove 18 in the longitudinal direction and are movably arranged in the longitudinal direction. Knitting needle 11 needle head 14
An intermediate platin 19 is disposed in the needle groove 18 at the end opposite to. This intermediate platin is operatively connected to an electromagnetic selection system (not shown) and can be configured as a selector platin (jack) or a trigger (pusher) platin. Therefore, the device of the present invention is used in a flat knitting machine in which the selection is expanded by the switchable cam portion, and also in a flat knitting machine in which the selection can be expanded by the selector platin that can be pushed into the needle bed 17. be able to.

The two parts 12 and 13 of the knitting needle 11 can be connected to each other in the longitudinal direction of movement indicated by the double-headed arrow A by form-locking connection by means of a connecting device 21. The connecting device
A two-arm lever 22 is arranged on 21 and a protrusion 23 is arranged on the lower side of the lever 22, and the lever 22 can swing around the protrusion 23. The protrusion is arranged in the recess or notch 24 of the rear end portion 26 having a low height in the stitch forming portion 12. In this way, the lever 12 is constructed as a two-arm rocker. The arm 27 of the lever 22 facing the motion imparting portion 13 of the knitting needle 11 is provided with a hook-shaped protrusion 28 protruding from the lower side thereof. The projection 28 is correspondingly formed in a hook shape at the front end 31 of the motion imparting portion 13 facing the projection, and can be engaged behind the projection 29 facing in the opposite direction. The end 31 is also similar to the end 26 or 31 and the lever 22 when the coupling device 21 is locked (see FIG. 1), just as the end 26 of the part 12 is not higher than the part 13. The overall height is not larger than the height of the trunk of the stitch forming portion 12 or the motion imparting portion 13. As mentioned above,
The needle butt 16 is provided at the end 31 of the motion forming portion 13.

In FIG. 1, when the coupling device 21 is locked, the two ends 26 and 31 are in front abutment with each other. In that case, the back of the lever 22 is the back of the trunk of the knitting needle 11.
It is arranged substantially parallel to the bottom of the needle groove 18 or 32. FIG. 2 shows the case where the connection device 21 is disconnected.
In this case, the rocker-like lever 22 is swinging, and in this posture, the operating arm 33 of the lever 22 is located at the end portion 26.
The hook-shaped protrusion 28 of the lock arm 27 is released from the protrusion 29 of the motion imparting portion 13 by inclining toward the upper side of the.

According to FIG. 3, the cam carriage 36 of the flat knitting machine has two cam devices 37 and 38 which work back and forth in the running direction, these cam devices being knitting cams and knitting cams respectively for each embodiment. And / or a transfer cam, or a combination cam for knitting and transferring. These two cam devices 37 and 38 are shown only in their opposite areas. Within this area, the stitch cams 39, 39 'movable along the double arrow B are shown.
Is provided. These stitch cams and the fixed cam portions 41, 41 'facing the stitch cams make it possible to form the delivery cam grooves 42, 4
2'is formed and the delivery cam grooves 42, 42 'serve as drive cam grooves in the following cam device. Sending cam groove 42,4
2'extends upward below stitch cams 39, 39 'and connects with cam groove portions 43, 43'. This cam groove part 43,4
3'includes cam portions 41, 41 'and a similarly fixed opposing cam portion 44 disposed between the two stitch cams.
Limited. This cam portion 44 has two cam devices 37,3
8 is common and symmetrical about an imaginary plane of intersection 46 between these cam devices 37 and 38. On both sides of this plane of symmetry 46, the cam portion 44 has a symmetrical delivery cam 47,
The delivery cam 47 has first delivery paths 48, 48 '. A horizontal passage 49 connecting the two first delivery passages 48, 48 'forms a groove portion 52 between it and a fixed cam portion 51 opposite thereto. This groove portion is arranged parallel to the groove portions 43, 43 'while being shifted by the delivery height. The cam portions 41, 41 ′ have second delivery paths 53 ′, 53 at their ends facing the cam portion 51. This delivery path transitions into a horizontal path 54, 54 'formed by the lower edges of the cam portions 41, 41'. These two paths 54,
54 'are in line with each other. The second sending route
53 and 53 'are located slightly higher than the horizontal path 49 of the cam portion 44 or the delivery cam 47.

The cam carriage 36 is further provided with a connecting actuator 55. This device has a locking bar 56, 56 'for each movement direction C, C', and both movement directions C, C '
C'has a common cross-section 57 for disconnecting.
The two locking rails 56, 56 'are arranged horizontally in a line and parallel to the rail 57 for releasing the connection. Two
The distance between the one crosspiece 56, 56 ′ and the crosspiece 57 corresponds approximately to the length of the lever 22 of the knitting needle 11. Crosspiece 56,56 ′ for locking
Is a rising portion that precedes in the moving direction of the carriage 36.
It has 58, 58 'and locking parts 59, 59'.
The same applies to the crosspiece 57 for disconnecting. That is, the cross section 57 has a portion 61 which causes the disconnection at the center.
And one rising part at each end of this part 61
It has 62, 62 '. Ascending part of locking cross 56, 56 '
58, 58 'are arranged at the height of the groove portion 43 or 43'. On the other hand, the rising portions 62, 6
2 ′ precedes it in the direction of movement of the carriage 36 and is also arranged ahead of the delivery cam 47.

The process of releasing and locking the parts 12 and 13 of the knitting needle 11 is performed as follows.

FIG. 1 shows a state in which the portions 12 and 13 of the knitting needle 11 are locked. The knitting needle 11 is guided in the feeding groove 42 through the needle butt 16 in the moving direction C of the cam carriage 36 and is fed. It is brought into the groove part 43 after movement. Before reaching the delivery cam path 48, that is, in the imaginary plane shown, for example, the actuating arm 33 of the connecting lever 22 releases the connecting crosspiece.
Under the influence of 57, as shown in FIG. 2, the lever 22 is swung by the cross-section 61, so that the coupling device 21 is opened. In the position where the decoupling movement takes place, the stitch forming part 12 of the knitting needle 11 is at the same height as the cam. During the subsequent movement of the cam carriage 36, the needle butt 16 reaches the delivery cam 47 or delivery path 48 of that cam,
As a result, the needle butt is further delivered and reaches the cam groove portion 52. This causes the motion imparting portion 13 to move away from the stitch forming portion 12, while the stitch forming portion 12 remains at the same height as the cam, as shown in FIG. During said movement, the connecting lever 22 is held in the open position. It is also possible to decouple the needle sections 12 and 13 at a selected area between the same height as the cam and the deepest delivery section of the knitting needle 11 immediately after actuation (knitting).

When the cam carriage (not shown) further moves near the virtual plane 65, a new selection of the knitting needle 11 is performed by an electromagnetic selection device (not shown). When the associated knitting needle 11 is further selected, the motion imparting portion 13 is re-forwarded by the selected intermediate platin 19 of that portion, so that
The needle butt 16 of this part 13 goes up along the delivery cam path 48 'to reach the groove part 43', where the end 31 of the part 13 again strikes the stitch forming part 12 of the knitting needle 11. The lock arm 27 of the lever 22 is swung back by the action of the locking crosspiece 56 in its path, and as a result, the stitch forming portion 12 and the motion imparting portion 13 are reconnected. It

However, if no further selection is made with respect to the associated knitting needle 11 as the electromagnetic selector passes through the plane 65, the motion imparting portion 13 is further delivered in the second delivery path 53, so that The needle butt 16 reaches the horizontal path 54 and stays there. As a result, the stitch forming portion 12 also remains in the cam-equal (ie associated selected) position. That is, this portion 12 makes no movement in the area of the stitch cam that follows. This continues until the needle is reselected.

The same applies during the movement of the cam carriage 36 in the opposite direction indicated by arrow C '. The cam portion and the groove portion, which are symmetrically arranged on the cam carriage and have a dash in the part number, act sequentially.

In the case of the above-mentioned embodiment, it is shown that when the portion 13 of the knitting needle 11 hits the portion 12, the locking bars 56, 56 'act again. However, it is also possible to arrange the locking crosspiece so that the locking action takes place not only before the delivery of the knitting needle 11, but during the delivery.

Although not shown, in another embodiment of the invention it is ensured that the locking bar and / or the decoupling bar are switchable so that the associated needle is not selected again. Only in that case can decoupling be done. That is, when the relevant knitting needle is immediately reselected,
The connection release and the relocking may not be performed each time.

[Summary] A stitch forming region (12) having a needle head (14) and a motion imparting region (13) having a needle butt (16) are provided, and a needle bed (1
A knitting needle (11) movable in the longitudinal direction in the needle groove (18) of 7),
A flat knitting machine with a cam carriage (36) having cams (37, 38) is described.

In the flat knitting machine of the type described above, the flat knitting machine having a switchable cam portion or the flat knitting machine having a selector platen capable of settling in the needle bed is selected. That the knitting needle, which has not been and therefore is not working, must move along the stitch cam,
Easily avoided.

For that purpose, the stitch forming region (12) and the motion imparting region (13)
And can be connected to each other by a connecting device (21) as separate parts of the two-part knitting needle (11). In this coupling device, the stitch forming part (12) of the knitting needle (12) is moved to the motion imparting part (1) until the activated (knitting) knitting needle (11) is selected again.
3) As separated from the cam carriage (36)
It is operated by using the device (55) provided in the. (First
(Figure)

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a needle groove in a needle bed of a flat knitting machine in which knitting needle portions are connected to each other, and FIG.
FIG. 3 is a cross-sectional view corresponding to the drawing, and FIG. 3 is a partial schematic view of a double cam device provided in a cam carriage. Explanation of code 11 …… Knitting needle 12 …… Knitting formation area 13 …… Motion imparting portion 14 …… Needle head 16 …… Bat 17 …… Needle bed 18 …… Needle groove 19 …… Intermediate platin 21 …… Coupling device 22 …… Lever 23 …… Projection 24 …… Notch 26 …… Rear end 27 …… Arm 28 …… Locking hook 29 …… Hook 31 …… Front end 32 …… Back part 33 …… Opposing arm 36 …… Cam carriage 37 …… Cam device 38 …… Cam device 39 …… Stitch cam 39 ′ …… Stitch cam 41 …… Cam part 41 ′ …… Cam part 42 …… Needle feed cam groove 42 ′ …… Needle feed cam groove 43 …… Cam groove portion 43 '... Cam groove portion 44 ... Cam portion 46 ... Virtual crossover plane 47 ... First delivery cam 48 ... First delivery path 48' ... First delivery path 49 ... Horizontal path 51 …… Cam part 52 …… Groove part 53 …… Second delivery cam path 53 ′ …… Second delivery cam path 54 …… Horizontal path 54 ′ …… Horizontal Path 55 ...... Connection actuating device 56 ...... Crosspiece (lock element) 56 '...... Crosspiece (lock element) 57 ...... Crosspiece (connection release element) 58 ...... Raised part 58' ...... Raised part 59 ...... Locking part 59 ′ …… Locking part 61 …… Disconnecting part 62 …… Rise part 62 ′ …… Rise part 65 …… Virtual plane

Claims (12)

[Claims] 1. A cam carriage having a knitting needle having a stitch forming area having a needle head and an application area having a needle butt and movable in a needle groove of a needle bed in a longitudinal direction, and at least one cam. In a knitting machine provided with, especially in a flat knitting machine, the stitch forming area (12) and the motion imparting area (13) are
As a separate part of the two-part knitting needle (11), the connecting device (2
The knitting needles (11) are connected to each other by this knitting needle (11).
A knitting machine, characterized in that it is operated with a device (55) provided on the cam carriage (36) so that it is separated from the motion imparting part (13) until is selected again. 2. The knitting machine according to claim 1, wherein the connecting device (21) has a lever (22), and the lever (22) is pivoted on one needle portion (12). A knitting machine, which is supported and is capable of being engaged by being shape-connected to the other needle portion (13). 3. A knitting machine according to claim 2, wherein the lever (22) has a hook (28) at one end, and the associated and opposed needle portion (13) has a hook (14) in the opposite direction. 29) A knitting machine characterized by comprising: 4. The knitting machine according to claim 3, characterized in that the lever (22) is provided with an opposing arm (33) at the end opposite to the hook (29). Knitting machine. 5. The knitting machine according to claim 1, wherein the connecting actuator (55) on the cam carriage (36) acts on the arm (27, 33). ,Five
7), A knitting machine characterized by being formed by elements such as a cam. 6. The knitting machine according to claim 5, wherein the cam carriage (36) has a lock hook (28).
At least one locking element (56) acting on the lever arm (27) having a lever, and the opposite arm (3) of the lever (22).
A knitting machine, characterized in that it is provided with at least one decoupling element (57) acting on 3). 7. The knitting machine according to claim 5 or 6, wherein the lock element and / or the decoupling element (56, 57) is switchable or non-switchable. Knitting machine. 8. The knitting machine according to any one of claims 5 to 7, wherein the locking element (56) is provided in front of or in the area of the needle delivery groove (42). A knitting machine characterized by being arranged. 9. A knitting machine according to any one of the preceding claims, in which the disconnection of the needle portions (12, 13) is at the same position as the cam of the stitch forming portion (12) of the knitting needle (11). A device (56) for actuating the coupling device (21) on the knitting needle (11) is arranged in the cam carriage (36) with respect to the cam portion, as is done in the region between the and the deepest pull-down position. Knitting machine. 10. A knitting machine according to any one of the preceding claims, wherein after the mutual connection of both parts (12, 13) of the knitting needle (11) is released, the motion imparting part of the knitting needle (11) ( A knitting machine characterized in that 13) further carries out a feeding movement. 11. The knitting machine according to claim 10, wherein when the knitting needle is not selected, the motion imparting portion (13) of the knitting needle (11) is fed below the cam portion. A knitting machine characterized by being present. 12. The knitting machine according to claim 10 or 11, wherein the first delivery cam (47) is arranged in the area of the decoupling element (57) of the cam carriage (36). Is
A knitting machine characterized in that a second delivery cam (53) is provided in front of the lock element (56).