JPS626151Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a tension device for a hand knitting machine that supplies knitting yarn to a yarn feeder of a carriage while applying a constant tension to the knitting yarn.

Conventional devices of this type have a structure in which the middle part of the front thread guide is rotatably supported at the upper end of the thread take-up bar, and the base of the thread take-up spring is rotatably supported at the rear end of the front thread guide. When carrying the knitting machine, rotate the front end of the front thread guide downward and rotate the base of the thread take-up spring toward you so that the tip of the thread take-up spring overlaps the bottom end of the thread take-up bar and fold it into the case. It is configured to be stored. However, in the conventional structure, the front thread guide and the thread take-up spring have directionality in the rotation direction, making the operation difficult to understand and troublesome to handle.
Separately, a head to which a thread take-up spring is attached is removably fitted to the upper end of the thread take-up bar, so that when carrying the hand knitting machine, the head is removed from the thread take-up bar and the two are separated. However, since the thread take-up bar has a vertical orientation, there is a risk of it being assembled and used incorrectly, and the knitting yarn may not be fed smoothly, and the operation is still difficult to understand. It has the following drawbacks.

The present invention was developed in view of the above-mentioned circumstances, and its purpose is to make it easy to understand and handle both the operation when storing it in the case and the operation of taking it out from the case and putting it into use, and to prevent errors in operation. An object of the present invention is to provide a tension device for a hand knitting machine that can reliably prevent the above problems.

An embodiment of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a thread take-up rod having a bent portion 1a at the lower part, which is a needle bed (not shown) of the hand knitting machine main body 2.
It is removably inserted into a thread take-up bar mounting hole 3 provided at the rear of the needle, and is mounted with the substantially entire part inclined slightly diagonally rearward with respect to the needle bed. 4 is the main body of the thread take-up device attached to the upper end of the thread take-up bar 1, and its outer case 5 is formed into a rectangular container shape with an open rear surface by integrally molding plastic, for example, and has a thread take-up device on the bottom side. A cylindrical portion 6 into which the upper end of the rod 1 is fitted is integrally molded, and cylindrical portions 7 and 8 are integrally molded at the center of the inner surface with a predetermined distance therebetween. A horizontally long slit hole 9 located near the top of the cylindrical portion 8 is formed in the center of the front surface of the outer case 5 so as to communicate with the inside of the outer case 5. Reference numeral 10 denotes a rear case formed by integrally molding plastic, for example, to cover the rear opening of the outer case 5. A U-shaped notch 11 is provided at the center of the lower end of the rear case, and a peripheral edge is provided at the center of the front. A bulging portion 12 flush with the wall 10a is formed so as to be oriented in the vertical direction, and through holes 13 and 14 are provided in the bulging portion 12 to face the cylindrical portions 7 and 8. Reference numerals 15 and 16 denote slit-shaped guide grooves formed in the bulge 12 so as to sandwich the through holes 13 and 14, and these have gently bent portions 15a and 16a in the middle, respectively. The half parts are each gently inclined diagonally outward, and their upper ends are open to the upper surface of the rear cover 10, and their lower ends are open to the inside of the notch 11. A pair of thread insertion grooves 17 and 18 are formed in the rear cover 10 so as to sandwich the bulged portion 12 and open upwardly.The outer case 5 has thread insertion grooves 19 corresponding to these thread insertion grooves 17 and 18. , 20 are formed to open upward. Reference numeral 21 denotes a support plate formed by bending a metal plate, in which through-holes 22 and 23 corresponding to the cylindrical parts 7 and 8 are provided in the central part, and opposing parts with a constant interval are provided in both side parts. Thread holding portions 24 and 25 are formed, and thread guides 24a and 25a protruding obliquely outward are formed on both side edges of each thread holding portion 24 and 25, respectively.
Further, 24b, 24c and 25b, 25c are through holes formed to face the thread pressers 24, 25, respectively, and two support rods 26,
Both ends of 27 are inserted and supported, respectively. Reference numerals 28 and 29 are strip-shaped thread clamping plates corresponding to the inner surfaces of the thread holding parts 24 and 25, and these have thread guides 28a and 29a bent diagonally inward at their peripheral edges, respectively.
The support rod 26 has through holes 28b, 28c and 29b, 29c.
are inserted into the support rod 27 through holes 28c,
29c are respectively inserted. On the other hand, 30 is a compression coil spring fitted around the support rod 26, which is provided between the thread clamping plates 28 and 29, and is connected to the thread holding parts 24 and 29.
It is designed to be elastically pressed in each of five directions. The above-mentioned support rods 26 and 27 are connected to the support plate 2.
1 is housed in the outer case 5, its both ends come close to the inner surface of the peripheral wall of the outer case 5, and are prevented from falling out of the through holes 24b, 24c and 25b, 25c. Reference numeral 31 denotes a thread guide rod formed by bending a wire rod, and has a U-shaped fixing part 31a in the center, and thread guide parts 31b and 31c corresponding to the thread insertion grooves 19 and 20 at both ends.
The fixing part 31a is formed in an arc shape with the tip facing upward, and when the fixing part 31a is inserted into the slit hole 9, the middle part of the fixing part 31a becomes a support rod. 26 and support plate 2
1 and the support plate 21 is inserted between the outer case 5 and the outer case 5.
This fixing part 3
A distal end portion of 1 a is located between the rear end portion of the cylindrical portion 7 and the through hole 22 . Reference numerals 32 and 32 indicate thread take-up springs made of spring wire, and thread insertion portions 32a,
32a is bent, and the lower end has a fitting engagement portion 32.
b, 32b are bent, and this fitting engagement portion 32
Bent portions 32c, 32c that are gently bent are provided in the vicinity of b, 32b. The bent portions 15a and 16 provided on the rear cover 10 described above are
The guide grooves 15 and 16 having a
It constitutes a holding means 33 for holding 2 and 32. Reference numeral 34 denotes an operation piece manufactured by integrally molding plastic, for example, which has a rectangular shape large enough to fit into the notch 11 of the rear cover 10 and has a pair of fitting holes 34a, 34a. The fitting engagement portions 32b, 32b of the thread take-up springs 32, 32 are fitted into the fitting holes 34a, 34a, and the fitting engagement portions 32b, 32b engage the inner surfaces of the fitting holes 34a, 34a by their own elastic force. is engaged in. The thread take-up spring 3 attached to the operating piece 34 in this way
The middle part of 2 and 32 is the guide groove 15 of the rear cover 10,
16, the rear cover 10 is fixed to the rear surface of the outer case 5 with tapping screws 35, 35. And the upper tapping screw 35
is the cylindrical part 7 via the through hole 13, the through hole 22 of the support plate 21, and the fixing part 31a of the thread guide rod 31 in this order.
The lower tapping screw 35 is screwed into the cylindrical portion 8 through the through hole 14 and the through hole 23 of the support plate 21 in this order. Reference numeral 36 denotes a reinforcing member formed into a substantially V-shape by bending a wire rod.This reinforcing member has spring receivers 36a at both ends into which the thread take-up spring 32 is inserted, and the middle part is attached to the rear surface of the rear cover 10. The tapping screw 3 is fitted into the formed fitting groove 37.
5 is pressed by a washer 38 inserted in advance. In FIG. 9, reference numerals 39 indicate positioning projections protruding from the four corners of the front surface of the rear cover 10, and fitting holes 40 into which these projections 39 are fitted are formed at the rear opening of the outer case 5. There is. Also, 41,4
Reference numeral 1 denotes a guide groove provided in the upper edge of the outer case 5 so as to be continuous with the guide grooves 15 and 16. A rear thread guide 42 is attached to the middle part of the thread take-up bar 1 via a holding fitting 43. This is formed by bending a wire, and has two thread guide parts 42a, 42a. The end portion is rotatably attached to the holding fitting 43 via a screw 44, a nut 45, and a washer 46. Reference numeral 47 denotes a thread hooking body which is fastened together with the base end of the rear thread guide 42 and the holding fitting 43, and this is made by bending a wire rod and is formed into a ring shape so as to surround the thread take-up bar 1. It has a thread receiving part 47a. still,
43a, 43a are thread hooks provided on the holding fitting 43.

Next, the operation of this embodiment configured as above will be explained. When the thread take-up springs 32, 32 are moved upward along the guide grooves 15, 16 of the rear cover 10 and the operation piece 34 is brought to the operating position located inside the notch 10, each guide groove 15, 16 of the holding means 33 is moved upward. It has bent portions 15a and 16a in the middle,
Since the thread take-up spring 32 is in pressure contact with the inner surface of each guide groove 15, 16 by its own elastic restoring force, the thread take-up spring 32, 32 is held at its operating position. Next, after rotating the back yarn guide 42 to bring it into a substantially horizontal state, the two knitting yarns A and B from the yarn source are transferred to the yarn guide portions 42a and 42 of the back yarn guide 42.
The thread insertion groove 1 is inserted from above the main body 4 through the thread 2a.
7, 19 and 18, 20, and after passing through the thread guide portions 31b, 31c of the thread guide rod 31, respectively, the knitting yarn A is immediately inserted into the thread insertion portion 32a of one of the thread take-up springs 32, and the knitting yarn is After the thread B passes through the thread hook 43a of the holding fitting 43, it is inserted into the thread insertion portion 32a of the other thread take-up spring 32. A carriage is provided on the rail on the needle bed of the hand knitting machine main body 2 so as to be movable back and forth, and the carriage has a first
A knitting fabric presser foot 48 shown in FIG. The knitting yarn A is inserted through the small diameter yarn feeder 49, and the knitting yarn B is inserted through the horizontally long yarn feeder 50.

Therefore, the knitting yarns A and B inserted into the yarn insertion grooves 17, 19 and 18, 20 are guided by the yarn guides 24a, 25a.
The compression coil spring 30 is held between the thread holding part 24 and the thread holding plate 28 and between the thread holding part 25 and the thread holding plate 29 through 28a and 29a, respectively.
As a result, approximately the same yarn clamping pressure is applied to each of the knitting yarns A and B. Then, when the plating fabric is formed by the left and right reciprocating movement of the carriage, the knitting yarns A and B are pulled out against the yarn clamping pressure applied by the spring force of the compression coil spring 30, but the knitting yarns B connects the thread take-up spring 3 via the thread hook 43a of the holding fitting 43.
The thread hook 43 is inserted into the thread insertion portion 32a of No.2.
Since the knitting yarn A is subjected to sliding resistance due to the sliding resistance caused by A, a larger yarn tension is applied to the knitting yarn A, which is inserted directly into the yarn insertion portion 32a of the yarn take-up spring 32 without passing through the yarn hook 43a, and is inserted into the small diameter yarn feeder 49. The knitting yarn A appears on the surface side of the knitted fabric as a base yarn, and is passed through the horizontally long yarn feeder 50.
The knitting yarn B inserted through the knitting yarn appears on the back side of the knitted fabric as a plating yarn. Since the thread tension acting on the knitting yarn B, which is the plating yarn, is larger than the thread tension acting on the knitting yarn A, which is the ground yarn, the ground yarn is reliably positioned on the face side of the knitted fabric, and the plating yarn is will be reliably positioned on the back side of the knitted fabric. Furthermore, by the action of the yarn take-up spring 32, the knitting yarns A and B supplied to the small-diameter yarn feeder 49 and the oblong yarn feeder 50 are always maintained in a state where a constant yarn tension is applied to each yarn without slack. Therefore, in addition to plating knitting, when performing two-color simultaneous knitting, for example, by inserting knitting yarn B in the same manner as knitting yarn A without hanging it on the thread hook 43a, The knitting yarns A and B to which approximately equal tensions have been applied can be supplied to the yarn opening for simultaneous knitting.

Next, we will discuss the operation when the knitting machine is folded for storage or transportation after use. That is, first, the thread take-up pin 1 is removed from the thread take-up pin attachment hole 3, and the rear thread guide 43 is rotated about the screw 44 so that its rear end overlaps the thread take-up pin 1, and then the operation is performed. Hold the piece 34 with your fingers and remove the notch 11.
The thread take-up spring 32 is moved downward along the guide grooves 15 and 16. Then, as shown in FIG. 11, the thread take-up springs 32, 32 are brought into a substantially parallel state with the thread take-up bar 1, and the bent portion 1a and the bent portions 32c, 32c are also brought into a substantially parallel state by utilizing the twist of the thread take-up spring 32. , the operating piece 34 is in contact with the lower end of the thread take-up pin 1, and the overall length is approximately
It becomes 1/2 and becomes compact.

According to this embodiment configured in this manner, the operation during use and storage requires only the vertical movement of the operating piece 34, and furthermore, since the vertical direction of the thread take-up spring 32 does not always change, the operation is very easy to understand. Moreover, since the thread take-up bar 1 and the main body 4 of the thread take-up device are always connected and there is no need to disassemble them, there is no possibility of misdirection during assembly.
Overall, it is easy to handle and can reliably prevent operational errors. Further, the thread take-up springs 32, 32 can be easily attached and detached by fitting into the fitting hole 34a of the operation piece 34 due to the elasticity of the fitting portion 32b. Since the depth of each guide groove 15, 16 is determined so that the thread take-up spring 32 can pass through the thread take-up spring 32, the thread take-up spring 32 can be replaced without separating the outer case 5 and the rear cover 10. Furthermore, since the support plate 21 is temporarily held within the outer case 5 by the fixing portion 31a of the thread guide rod 31, it has the effect of making the assembly work of the thread take-up device 4 very easy. ing.

Incidentally, the holding means 33 may be constructed by forming the guide grooves 15 and 16 in a gently curved manner.

As is clear from the embodiments described above, the present invention is easy to understand and handle both when it is stored in the case and when it is taken out of the case and put into use, and it is possible to reliably prevent operational errors. A tension device for a hand knitting machine can be provided.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a perspective view of the whole, FIG. 2 is a front view of the main parts,
Fig. 3 is a side view of the main part, Fig. 4 is a rear view of the main part, Fig. 5 is a sectional view taken along the - line in Fig. 2, Fig. 6 is a sectional view taken along the - line in Fig. 2, Figure 7 is a front view taken along the - line in Figure 6, Figure 8 is an enlarged front view of the operating part, Figure 9 is an exploded perspective view of the main part, and Figure 10 is taken along the - line in Figure 3. cross section,
FIG. 11 is a side view showing the stored state, and FIG. 12 is a top view of the knitting presser foot. In the drawing, 1 is a thread take-up bar, 2 is a hand knitting machine main body, 4 is a main body of a thread take-up device, 5 is an outer case, 10 is a rear cover,
11 is a notch, 15 and 16 are guide grooves, 15a and 1
6a is a bent portion, 32 is a thread take-up spring, 33 is a holding means, and 34 is an operating piece.

Claims (1)

[Claims for Utility Model Registration] 1. A tension device comprising a main body of a thread take-up device attached to the upper end of a support and an elongated thread take-up spring projecting upward, wherein the main body of the thread take-up device is provided with a thread take-up spring as a support. a vertically open guide groove is provided for guiding the thread take-up spring so as to be movable up and down along the guide groove, and an operating piece is provided at the lower end of the thread take-up spring to move the thread take-up spring up and down along the guide groove; A tension device for a hand knitting machine, characterized in that a holding means is provided between the main body and the thread take-up spring for holding the thread take-up spring at least in an upwardly projecting operating position. 2. By forming the guide groove into a gentle bend or curve in the main body of the thread take-up device so that the thread take-up spring fits against the spring's own elastic action, the thread take-up spring is at least at the operating position. A tension device for a hand-knitting machine according to claim 1, characterized in that the tension device comprises a holding means for holding a. 3. A utility model characterized in that a plurality of thread take-up springs are provided so as to be movable up and down along their respective guide grooves, and one common operating piece is provided at the lower end of each of the thread take-up springs. A tension device for a hand knitting machine according to claim 1 or 2.