High-precision needle plate height adjusting mechanism

Abstract

The utility model discloses a high-precision needle plate height adjusting mechanism which comprises a fixing arm, a plurality of connecting holes are formed in one end of the fixing arm, a bearing groove is formed in one end, far away from the connecting holes, of the fixing arm, and a limiting seat is fixedly connected to one side, provided with the bearing groove, of the fixing arm. An insertion hole is formed in the side, away from the limiting seat, of the bearing groove of the fixing arm, a step groove is formed in the inner side of the insertion hole, a cross-shaped cap is arranged at the end, away from the bearing groove, of the step groove, an eccentric shaft is arranged at the end, away from the cross-shaped cap, of the step groove, and the outer side of the eccentric shaft is fixedly sleeved with a top plate bearing. The bearing groove and the top plate bearing are matched with the eccentric shaft and the limiting shaft, and high-position, zero-position and low-position three-gear adjustment with the eccentric distance as the standard can be set by rotating the eccentric shaft and changing the eccentric position.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of flat knitting machine, especially to a high-precision needle plate height adjusting mechanism. BACKGROUND

[0002] Flat knitting machine is the abbreviation of flat knitting machine, which belongs to a kind of flat knitting machine. The main components of flat knitting machine include frame, needle plate, guide rail, tap, pattern plate and so on. The needle plate is the component of installing the needle combination. At present, the specification of needle plate in the industry is determined according to the number of needles per inch. The needle plate with more than 7 needles per inch is fine needle plate, and the needle plate with less than 7 needles per inch is thick needle plate.

[0003] The height of the needle plate of the flat knitting machine needs to be adjusted in actual use. The general adjusting mechanism is realized by the cooperation of screw rod and nut. The height is adjusted by the rotation of the screw thread. However, the height difference of high-precision needle plate needs to be adjusted only between one or two wires. Although it can be realized by the cooperation of screw rod and nut, not only high-precision screw rod is needed, but also the rotation angle needs to be strictly controlled. In addition, the limiting structure is needed to limit the screw rod to ensure that the screw rod does not move during the operation of the equipment, which leads to high cost and complex structure of the adjusting mechanism, and the adjustment is difficult, which has further improvement space. UTILITY MODEL CONTENT

[0004] The utility model is to solve one of the technical problems in the prior art, and provide a high-precision needle plate height adjusting mechanism to solve the above problems.

[0005] In order to achieve the above purpose, a high-precision needle plate height adjusting mechanism is provided, which comprises a fixed arm. A plurality of connecting holes are formed in one end of the fixed arm. A bearing groove is formed in the end of the fixed arm away from the connecting hole. A limit seat is fixedly connected to one side of the bearing groove. An insertion hole is formed in the side of the fixed arm away from the limit seat. A step groove is arranged on the outside of the insertion hole. A cross cap is arranged in the step groove. An eccentric shaft is arranged at one end of the cross cap close to the insertion hole. A top plate bearing is fixedly sleeved on the outside of the eccentric shaft.

[0006] A limit shaft is arranged at the end of the eccentric shaft away from the step groove. A limit hole is formed at the position corresponding to the limit shaft in the limit seat. A thimble hole is formed in the upper middle part of the limit seat corresponding to the limit hole. A limit thimble is arranged on the inside of the thimble hole. A fixed screw hole is formed in the lower end of the limit seat close to the fixed arm. A fixed screw is threadedly connected in the fixed screw hole. A thimble spring piece is fixedly connected to the lower part of the limit seat through the fixed screw. Four thimble limiting grooves are equidistantly formed on the outside of the limit shaft corresponding to the limit thimble.

[0007] According to the high-precision needle plate height adjusting mechanism, the inner diameter of the insertion hole corresponds to the area swept by one rotation of the eccentric shaft.

[0008] According to the high-precision needle plate height adjusting mechanism, the four needle limiting grooves are respectively arranged on the line connecting the centers of the limiting shaft and the eccentric shaft and the vertical line passing through the center.

[0009] According to the high-precision needle plate height adjusting mechanism, the end of the needle spring away from the fixing screw is provided with an embedding hole, and the end of the limiting needle close to the needle spring is provided with an embedding step corresponding to the embedding hole.

[0010] According to the high-precision needle plate height adjusting mechanism, the needle tip end close to the limiting shaft of the limiting needle is in a semispherical shape, and the needle limiting groove is a circular hole groove with an inner diameter smaller than the diameter of the needle tip end.

[0011] According to the high-precision needle plate height adjusting mechanism, the inner diameter of the limiting hole corresponds to the diameter of the limiting shaft, and the whole limiting shaft passes through the limiting hole and the limiting seat.

[0012] According to the high-precision needle plate height adjusting mechanism, the step groove, the cross cap and the limiting shaft are concentrically arranged.

[0013] The above scheme has at least one of the following beneficial effects:

[0014] 1. The bearing groove and the top plate bearing are arranged, the eccentric shaft and the limiting shaft are matched, the high position, the zero position and the low position three-gear adjustment are set according to the eccentric distance by rotating the eccentric shaft, the adjustment precision is high, the movable supporting design between the top plate bearing and the needle plate can also reduce the reaction force on the adjusting structure when the needle plate moves, and the practicability of the device is strengthened.

[0015] 2. The limiting shaft is provided with four needle limiting grooves, the elastic limiting component is formed by matching the limiting needle and the needle spring, in work, the eccentric shaft is constrained by matching the limiting needle and the needle limiting groove, and when adjustment is carried out, the elastic force of the needle spring can be overcome by pressing the cross cap by using a screwdriver and simultaneously screwing, the limiting shaft is rotated to replace the needle limiting groove matched with the limiting needle, and then the eccentric position of the eccentric shaft is changed, in the screwing process, whether the limiting needle is in place can be felt through the rebounding feedback of the needle spring, the adjustment difficulty is reduced, and the practicability of the device is strengthened.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, some of which will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model is further illustrated below in combination with the drawings and embodiments;

[0018] Figure 1 It is left side three-dimensional structure schematic diagram of high precision needle plate height adjusting mechanism of the utility model;

[0019] Figure 2 It is right side three-dimensional structure schematic diagram of high precision needle plate height adjusting mechanism of the utility model;

[0020] Figure 3 It is three-dimensional top view explosion structure schematic diagram of high precision needle plate height adjusting mechanism of the utility model;

[0021] Figure 4 It is three-dimensional top view explosion structure schematic diagram of high precision needle plate height adjusting mechanism of the utility model;

[0022] Figure 5 It is the structure schematic diagram of cross cap;

[0023] Figure 6 It is the structure schematic diagram of the limiting thimble of the utility model.

[0024] 1, fixed arm;2, connecting hole;3, bearing groove;4, limit seat;5, insert hole;6, step groove;7, cross cap;8, eccentric shaft;9, fixed screw hole;10, thimble hole;11, top plate bearing;12, limiting thimble;13, thimble spring piece;14, fixed screw;15, limit hole;16, limit shaft;17, thimble limit groove. Specific implementation

[0025] This part will describe the specific embodiments of the utility model in detail, and the preferred embodiments of the utility model are shown in the drawings, and the role of the drawings is to supplement the description of the text part with graphics, so that people can intuitively and visually understand each technical feature and the overall technical scheme of the utility model, but it cannot be understood as the limitation of the protection scope of the utility model.

[0026] Reference Figures 1-6The utility model discloses an embodiment provides a kind of high-precision needle plate height adjusting mechanism, including fixed arm 1, the end of fixed arm 1 is equipped with multiple connecting holes 2, fixed arm 1 is equipped with bearing groove 3 in the end away from connecting hole 2, fixed arm 1 is fixedly connected with limit seat 4 in the side of bearing groove 3, fixed arm 1 is equipped with insertion hole 5 in the side of bearing groove 3 away from limit seat 4, the outside of insertion hole 5 is provided with step groove 6, cross cap 7 is arranged in step groove 6, for the limit of cross cap 7, cross cap 7 is provided with eccentric shaft 8 in the end close to insertion hole 5, eccentric shaft 8 is fixedly sleeved with top plate bearing 11 outside, the inner diameter of insertion hole 5 and the size of the circle of the rotating end of eccentric shaft 8 correspond, the insertion and eccentric rotation of eccentric shaft 8 are facilitated, can utilize the mode of rotating eccentric shaft 8, change by eccentric position, set with eccentric distance as standard one high position, two zero positions and one low position three gear adjustments, and the adjusting precision is high;

[0027] The end of eccentric shaft 8 away from step groove 6 is provided with limit shaft 16, step groove 6, cross cap 7 and limit shaft 16 are concentrically arranged, limit hole 15 is formed in the position corresponding to limit shaft 16 of limit seat 4, the inner diameter of limit hole 15 corresponds to the diameter of limit shaft 16, the whole of limit shaft 16 passes through limit seat 4 through limit hole 15, top pin hole 10 is formed in the position corresponding to limit hole 15 in the upper middle part of limit seat 4, limit top pin 12 is arranged in the inner side of top pin hole 10, fixed screw hole 9 is formed in the end close to fixed arm 1 of the lower part of limit seat 4, fixed screw 14 is screw-connected in fixed screw hole 9, top pin spring piece 13 is fixedly connected to the lower part of limit seat 4 through fixed screw 14, embedded hole is formed in the end away from fixed screw 14 of top pin spring piece 13, embedded step corresponding to embedded hole is arranged in the end part close to top pin spring piece 13 of limit top pin 12, four top pin limit grooves 17 are equidistantly formed in the position corresponding to limit top pin 12 outside of limit shaft 16, the shape of top pin tip close to limit shaft 16 of limit top pin 12 is hemispherical surface, top pin limit groove 17 is circular hole groove with smaller inner diameter than the diameter of top pin tip, four top pin limit grooves 17 are arranged on the center line of limit shaft 16 and eccentric shaft 8 and on the vertical line through the center, and the elastic limiting component composed of limit top pin 12 and top pin spring piece 13 is combined, in working, limit top pin 12 and top pin limit groove 17 are matched to constrain eccentric shaft 8, and when adjusting, only need to press cross cap 7 by screwdriver at the same time, the elastic force of top pin spring piece 13 can be overcome, limit shaft 16 and eccentric shaft 8 are rotated to replace top pin limit groove 17 matched with limit top pin 12, and then the eccentric position of eccentric shaft 8 is stably changed, and in the process of screwing, whether limit top pin 12 is in place can be felt through the rebound feedback of top pin spring piece 13, and the adjusting difficulty is reduced.

[0028] Working principle: the utility model discloses when using, the bearing groove 3 and the top plate bearing 11 of setting, cooperate eccentric shaft 8 and four top pin limit grooves 17 respectively set on the circle center line of limit shaft 16 and eccentric shaft and on the vertical line through the circle center, can utilize the mode of rotating eccentric shaft 8, through the change of eccentric position, set out with eccentric distance as standard one high position, two zero positions and one low position three gear adjustment, the adjustment precision is high, again cooperate the elastic limit component that limit top pin 12 and top pin spring piece 13 are combined, when working, through the cooperation of limit top pin 12 and top pin limit groove 17 to the constraint of eccentric shaft 8, and when adjusting, only need to press cross hat 7 through screwdriver at the same time and twist, can overcome the elasticity of top pin spring piece 13, make limit shaft 16 and eccentric shaft 8 rotate and change the top pin limit groove 17 that limit top pin 12 cooperates with to replace, further stable change eccentric position of eccentric shaft 8, and the elastic limit component can be through the rebound feedback of top pin spring piece 13 in the process of twisting, feel whether limit top pin 12 is in place, has reduced the adjustment difficulty.

[0029] The above embodiment of the utility model has been described in detail in combination with the drawings, but the utility model is not limited to the above embodiment, and various changes can be made within the knowledge range possessed by ordinary skilled persons in the technical field without departing from the purpose of the utility model.

Claims

1. A high-precision needle plate height adjustment mechanism comprising a fixed arm (1), characterized in that: The end of the fixed arm (1) is provided with a plurality of connecting holes (2), the end of the fixed arm (1) away from the connecting hole (2) is provided with a bearing groove (3), the fixed arm (1) is fixedly connected with a limiting seat (4) on one side of the bearing groove (3), the fixed arm (1) is provided with an insertion hole (5) on the side of the bearing groove (3) away from the limiting seat (4), the outer side of the insertion hole (5) is provided with a stepped groove (6), the inside of the stepped groove (6) is provided with a cross cap (7), the end of the cross cap (7) close to the insertion hole (5) is provided with an eccentric shaft (8), the outer side of the eccentric shaft (8) is fixedly sleeved with a top plate bearing (11); the end of the eccentric shaft (8) away from the stepped groove (6) is provided with a limiting shaft (16), the limiting seat (4) is provided with a limiting hole (15) at the position corresponding to the limiting shaft (16), the upper middle of the limiting seat (4) is provided with a thimble hole (10) at the position corresponding to the limiting hole (15), the inner side of the thimble hole (10) is provided with a limiting thimble (12), the end of the limiting seat (4) close to the fixed arm (1) is provided with a fixed screw hole (9), the fixed screw hole (9) is threadedly connected with a fixed screw (14), the lower side of the limiting seat (4) is fixedly connected with a thimble spring leaf (13) through the fixed screw (14), four thimble limiting grooves (17) are equidistantly provided on the position corresponding to the limiting thimble (12) and the limiting shaft (16) on the line connecting the centers of the limiting shaft (16) and the eccentric shaft (8) and on the perpendicular passing through the center.

2. The high-precision needle plate height adjustment mechanism according to claim 1, wherein The four thimble limiting grooves (17) are respectively provided on the line connecting the centers of the limiting shaft (16) and the eccentric shaft (8) and on the perpendicular passing through the center.

3. The high-precision needle plate height adjustment mechanism according to claim 1, wherein The end of the limiting thimble (12) close to the thimble spring leaf (13) is provided with an embedding step corresponding to the embedding hole.

4. The high-precision needle plate height adjustment mechanism according to claim 1, wherein The thimble limiting groove (17) is a circular hole groove with an inner diameter smaller than the diameter of the thimble tip.

5. The high-precision needle plate height adjustment mechanism according to claim 1, wherein The inner diameter of the limiting hole (15) corresponds to the diameter of the limiting shaft (16), and the limiting shaft (16) passes through the limiting seat (4) through the limiting hole (15).

6. The high-precision needle plate height adjustment mechanism according to claim 1, wherein The insertion hole (5), the stepped groove (6), the cross cap (7) and the limiting shaft (16) are concentrically arranged.

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