A jacquard drive device for a knitting machine

Abstract

The present invention discloses a jacquard driving device for a knitting machine, which includes a cam box, a swing arm shaft, a power input shaft, a cam, a swing arm frame, and a roller. In this solution, the structure of the driving device is improved. The detachable assembly structure of the two split parts of the cam box facilitates disassembly and maintenance. Similarly, the structure in which the corresponding swing arm frame and the swing arm shaft are fixed by a locking post abutting against a plug post also facilitates the separation of the swing arm frame from the swing arm shaft, which is convenient for individually replacing or maintaining the swing arm frame, etc. Under this structure, it is convenient for maintenance and reduces the maintenance cost.

Description

Technical Field

[0001] The present invention relates to the technical field of knitting devices, and particularly relates to a jacquard driving device for a knitting machine. Background Art

[0002] The common structure of the driving mechanism of an electronic jacquard machine is as Figure 2 shown, which is a conjugate cam driving type. Among them, a swing arm frame 4 is integrally formed on a swing arm shaft 2 in a cam box 1, a cam arm is formed on the swing arm frame 4, a first cam 7 and a second cam 8 are installed on the shaft body of a power input shaft 3 in the cam box 1, a roller 5 at the end of the cam arm abuts against the corresponding first cam 7 and second cam 8, a first swing arm 14 and a second swing arm 15 are installed on the swing arm shaft 2 outside the cam box 1, and a pull rod 16 is connected by docking the first swing arm 14 and the second swing arm 15. In this structure, when deformation, damage, etc. occur to the swing arm frame and the like and need to be replaced, the entire swing arm shaft needs to be replaced integrally, and the maintenance cost is relatively high. Moreover, the cover of the cam box is fixed by screws and the like, and the disassembly is rather troublesome and needs to be improved. Summary of the Invention

[0003] To solve the above at least one technical defect, the present invention provides the following technical solutions:

[0004] This application document discloses a jacquard driving device for a knitting machine, including a cam box, a swing arm shaft, a power input shaft, cams, a swing arm frame, and rollers. The swing arm shaft and the power input shaft are both pivotally connected to the cam box. A first cam and a second cam are arranged on the shaft body of the power input shaft located in the cam box cavity. A swing arm frame is arranged on the shaft body of the swing arm shaft located in the cam box cavity, and a first swing cam arm and a second cam arm are formed on the swing arm frame. The first swing cam arm and the second cam arm are connected to the corresponding first cam and second cam by rollers. A first swing arm and a second swing arm are arranged on the swing arm shaft outside the cam box. The cam box is assembled in a front and rear split manner and is detachably connected between the front split and the rear split. The swing arm frame is sleeved on the swing arm shaft. A first through hole is axially arranged in the swing arm shaft, and jacks are correspondingly arranged on the hole wall of the first through hole and the cavity wall of the corresponding swing arm frame. A plug is slidably connected to the jack on the hole wall of the first through hole, and an elastic member is arranged between the plug and the hole wall of the first through hole to reset the plug. A locking column is arranged at the end of the swing arm shaft. The tapered end of the locking column extends into the cavity of the first through hole and abuts against the plug, so that the end of the plug extends into the jack on the cavity wall of the swing arm frame through the jack on the hole wall of the first through hole.

[0005] In this solution, the structure of the driving device is improved. The detachable assembly structure of the two split parts of the cam box is convenient for disassembly and maintenance. The structure in which the corresponding swing arm frame and the swing arm shaft are fixed by the locking column abutting against the plug is also convenient for separating the swing arm frame from the swing arm shaft, which is convenient for separately replacing or maintaining the swing arm frame, etc. Under this structure, it is convenient for maintenance and the maintenance cost is reduced.

[0006] Further, both the swing arm shaft and the power input shaft include a head section and a tail section. The end of the head section is inserted and connected to the end of the tail section inside the cam box. The insertion connection between the head section and the tail section facilitates replacement and maintenance.

[0007] Further, multi-faceted convex columns are formed at the end of the head section of the swing arm shaft and the power input shaft, and correspondingly, multi-faceted grooves are formed at the end of the tail section of the swing arm shaft and the power input shaft. The insertion fit between the multi-faceted convex column and the multi-faceted groove realizes synchronous rotation and facilitates replacement.

[0008] Further, both the swing arm shaft and the power input shaft are rotationally connected to the front and rear box walls of the cam box through bearings. The rotational connection structures at both ends of the swing arm shaft help improve the rotational stability. And when the two split parts of the cam box are separated, the corresponding shaft sections of the swing arm shaft are separated from the corresponding split parts synchronously, which facilitates maintenance and replacement.

[0009] Further, both the front split part and the rear split part of the cam box are in the shape of a groove. Convex ribs I and II are respectively formed on the peripheral walls at the groove openings of the front split part and the rear split part. The convex rib I and the convex rib II are fixed through a buckle assembly. The butt-joint structure of the front and rear split parts and the buckle assembly facilitates disassembly and the maintenance and replacement of internal parts in the later stage.

[0010] Further, a sound-absorbing layer is provided on the peripheral wall of the cam box, which helps reduce noise.

[0011] Further, rollers are pivotally connected to the ends of the first cam arm and the second cam arm, and the rollers are in contact with the rim surfaces of the corresponding first cam and the second cam located below.

[0012] Further, a fixed end is formed at the end of the swing arm frame body. Through holes II are formed inside the fixed end and the corresponding swing arm frame body. A jack is provided on the hole wall of the through hole II of the fixed end for insertion and fit with the plug post. The butt-joint with the plug post through the jack on the fixed end helps maintain the structural stability of the swing arm frame.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The present invention improves the structure and adopts a split butt-joint structure for the cam box, swing arm shaft and swing arm frame, etc., which facilitates later maintenance and replacement and helps reduce costs. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0016] Figure 1It is a schematic structural diagram of the jacquard driving device of the knitting machine in Embodiment 1;

[0017] Figure 2 It is a schematic structural diagram of the jacquard driving device in the prior art;

[0018] Figure 3 It is a schematic structural diagram of the buckle assembly;

[0019] Among them, the reference numerals are:

[0020] 1, cam box; 2, swing arm shaft; 3, power input shaft; 4, swing arm frame; 5, roller; 6, locking column; 7, cam one; 8, cam two; 9, buckle assembly; 10, sound insulation layer; 11, tail section of swing arm shaft; 12, head section of swing arm shaft; 13, convex column; 14, swing arm one; 15, swing arm two; 16, pull rod; 17, inserting column; 18, spring; 19, pivot; 20, hook plate; 21, first convex rib; 22, second convex rib; 31, head section of power input shaft; 32, tail section of power input shaft; 41, fixed end; 42, first cam arm; 43, second cam arm; 90, clamping part; 91, U-shaped cavity; 100, front split body; 101, rear split body. Detailed implementation manners

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] As Figure 1 、 Figure 3 shown, in this example, a jacquard driving device of a knitting machine includes a cam box 1, a swing arm shaft 2, a power input shaft 3, cams, a swing arm frame 4, and a roller 5. Specifically, the cam box 1 is formed by detachably assembling a front split body 100 and a rear split body 101. Both the front split body 100 and the rear split body 101 are in a groove shape. On the peripheral walls of the corresponding notch openings of the front split body 100 and the rear split body 101, a first convex rib 21 and a second convex rib 22 are respectively formed. The first convex rib 21 and the second convex rib 22 are fixed by a buckle assembly 9. The buckle assembly 9 can select the structure as Figure 3 shown. The buckle assembly 9 includes a clamping part 90. The tail end of the clamping part 90 is formed with a U-shaped cavity 91. A pivot 19 passes through the U-shaped cavity 91 and its two ends are rotatably connected to the second convex rib 22 where it is located. The head end of the clamping part 90 is hook-shaped and a hook plate 20 is formed at the corresponding first convex rib. When the first convex rib 21 and the second convex rib 22 are in contact, rotate the hook-shaped head end of the clamping part to hook the hook plate, and then move the clamping part backward so that the pivot is embedded in the end cavity of the U-shaped cavity. When unlocking, move the clamping part upward so that the pivot is separated from the end cavity of the U-shaped cavity.

[0024] In this example, the swing arm shaft 2 and the power input shaft 3 are both pivotally connected to the cam box 1. The swing arm shaft 2 and the power input shaft 3 both adopt a two-end plug-in structure. The first section 12 of the swing arm shaft is rotatably connected to the wall of the front split body 100 of the cam box 1 through a bearing, and the end of the first section 12 of the swing arm shaft extends into the cavity of the cam box 1. The tail section 11 of the swing arm shaft is rotatably connected to the wall of the corresponding rear split body 101 through a bearing. Swing arms one 14 and two 15 are installed on the partial shaft body of the swing arm shaft 2 located outside the cam box 1, and the swing arms one 14 and two 15 are respectively connected to the pull rod 16.

[0025] A rectangular convex column 13 is formed at the end of the first section 12 of the swing arm shaft, and a rectangular groove is formed at the end of the corresponding tail section 11 of the swing arm shaft. In the cavity of the cam box 1, the convex column 13 is inserted into the rectangular groove to connect the first section and the tail section into one body and rotate synchronously. A swing arm frame 4 is sleeved on the tail section 11 of the swing arm shaft. A fixed end 41 is formed at the end of the body of the swing arm frame 4. Through holes two are formed at the fixed end 41 and the corresponding body of the swing arm frame. A through hole one is formed concentrically inside the tail section 11 of the swing arm shaft. The swing arm frame 4 is sleeved on the tail section 11 of the swing arm shaft through the through hole two. Radial jack holes are formed at the hole wall of the through hole two in the fixed end 41 and the corresponding hole wall of the tail section 11 of the swing arm shaft. An insert column 17 is inserted into the jack hole in the tail section 11 of the swing arm shaft. The insert column 17 is of a stepped type, and a spring 18 is arranged between the stepped surface and the hole wall of the through hole one in the tail section 11 of the swing arm shaft. Taking the spring as an elastic member, a lock column 6 is threadedly engaged and connected to the end of the tail section 11 of the swing arm shaft. The end of the lock column 6 is conical. The conical end of the lock column 6 abuts against the tail end of the insert column 17 so that the head end of the insert column 17 extends into the jack hole at the cavity wall of the fixed end 41, thereby fixing the swing arm frame 4 on the swing arm shaft 2. When unlocking, the lock column is externally screwed, and under the action of the spring, the insert column resets, and the swing arm frame can be disengaged from the swing arm shaft.

[0026] A cam arm one 42 and a cam arm two 43 are formed on the swing arm frame 4. Rollers 5 are pivotally connected to the ends of the cam arm one 42 and the cam arm two 43. A cam one 7 and a cam two 8 are installed on the shaft body of the power input shaft 3 located inside the cam box 1. The shaft body of the power input shaft 3 located outside the cam box 1 is connected to the corresponding loom mechanism.

[0027] The power input shaft 3 is also of a two-section plug-in structure. The connection between the first section 31 and the tail section 32 of the power input shaft is the same as the plug-in structure of the head and tail sections of the swing arm shaft 2. Moreover, the first section 31 and the tail section 32 of the power input shaft are both rotatably connected to the corresponding wall of the cam box 1 through bearings. A cam one 7 and a cam two 8 are installed at the tail section of the power input shaft 3. The rollers 5 on the swing arm frame 4 correspondingly abut against the wheel rims of the cam one 7 and the cam two 8 located below.

[0028] When the swing arm frame needs to be replaced, unlock the buckle assembly and separate the front and rear parts of the cam box. The head and tail sections of the corresponding swing arm shaft and power input shaft are disengaged. Screw the lock post outward to reset the plug post, and the locking between the swing arm frame and the swing arm shaft is released, then the swing arm frame can be removed for replacement, reducing the maintenance cost.

[0029] In addition, during implementation, a sound insulation layer 10 can also be selected to cover the peripheral wall of the cam box 1, which helps to reduce noise.

[0030] Under the above driving structure, the swing arm frame, swing arm shaft, power input shaft, etc. can all be replaced in sections, which helps to reduce the maintenance cost and is convenient for disassembly.

[0031] The above is only the preferred implementation mode of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A jacquard driving device for a knitting machine, comprising a cam box, a swing arm shaft, a power input shaft, cams, a swing arm frame, and rollers. The swing arm shaft and the power input shaft are both pivotally connected to the cam box. On the shaft body of the power input shaft located in the cam box cavity, a first cam and a second cam are provided. On the shaft body of the swing arm shaft located in the cam box cavity, a swing arm frame is provided, and a first cam arm and a second cam arm are formed on the swing arm frame. The first cam arm and the second cam arm are connected to the corresponding first cam and second cam by rollers. On the swing arm shaft located outside the cam box, a first swing arm and a second swing arm are provided. Characterized in that: The cam box is assembled in a front-back split manner and is detachably connected between the front split and the rear split. The swing arm frame is sleeved on the swing arm shaft. A first through hole is axially provided in the swing arm shaft, and insertion holes are correspondingly provided on the hole wall of the first through hole and the cavity wall of the corresponding swing arm frame. A plug post is slidably connected at the insertion hole on the hole wall of the first through hole, and an elastic member is provided between the plug post and the hole wall of the first through hole to reset the plug post. A locking post is provided at the end of the swing arm shaft. The tapered end of the locking post extends into the cavity of the first through hole and abuts against the plug post so that the end of the plug post extends from the insertion hole on the hole wall of the first through hole into the insertion hole on the cavity wall of the swing arm frame.

2. A jacquard driving device for a knitting machine according to claim 1, Characterized in that: Both the swing arm shaft and the power input shaft include a first section and a second section, and the end of the first section is inserted and connected to the end of the second section in the cam box.

3. A jacquard driving device for a knitting machine according to claim 2, Characterized in that: Multi-faceted convex columns are formed at the end of the first section of the swing arm shaft and the power input shaft, and correspondingly, multi-faceted grooves are formed at the end of the second section of the swing arm shaft and the power input shaft.

4. A jacquard driving device for a knitting machine according to claim 1, Characterized in that: Both the swing arm shaft and the power input shaft are rotatably connected to the front and rear box walls of the cam box through bearings.

5. A jacquard driving device for a knitting machine according to claim 1, Characterized in that: Both the front split and the rear split of the cam box are in the shape of a groove body. Convex ribs one and two are respectively formed on the peripheral walls at the notch of the front split and the rear split, and the convex rib one and the convex rib two are fixed through a snap component.

6. A jacquard driving device for a knitting machine according to claim 1, Characterized in that: A sound-absorbing layer is provided on the peripheral wall of the cam box.

7. A jacquard driving device for a knitting machine according to claim 1, Characterized in that: Rollers are pivotally connected to the ends of the first cam arm and the second cam arm respectively, and the rollers abut against the rim surfaces of the corresponding first cam and second cam located below.

8. A jacquard driving device for a knitting machine according to claim 1, Characterized in that: A fixed end is formed at the end of the swing arm frame body. Second through holes are formed in both the fixed end and the corresponding swing arm frame body. Insertion holes are provided at the hole wall of the second through hole in the fixed end for plugging and cooperating with the plug post.

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