An adjustable drive arm structure for a weft knitting machine

Abstract

The present application relates to the field of weft knitting equipment, and in particular to an adjustable driving arm structure of a weft knitting machine, comprising an upper mounting seat and a lower mounting seat, the upper mounting seat being equipped with a connecting arm, the lower mounting seat being rotatably equipped with a mounting block, the mounting block being provided with a first telescopic mechanism, the first telescopic mechanism comprising a first connecting plate, a second connecting plate and a locking assembly, one side of the first connecting plate being hinged to the mounting block, the second connecting plate slidingly abutting against one side of the first connecting plate, the side of the second connecting plate away from the lower mounting seat being hinged to an end of the connecting arm away from the upper mounting seat, and the locking assembly being used to drive the first connecting plate and the second connecting plate to abut or loosen against each other. The present application has the effect of improving the versatility of the driving arm structure.

Description

Technical Field

[0001] The present application relates to the field of weft knitting equipment, and in particular to an adjustable driving arm structure of a weft knitting machine. Background Art

[0002] As an important textile equipment, weft knitting machine plays a key role in the modern textile industry.

[0003] Existing weft knitting machines generally include a support ring and a support foot fixedly installed on the circumference of the support ring. A weaving frame is rotatably installed on the top side of the support ring, and the weaving frame is used to install the weaving machine. A winding frame is arranged under the support ring, and the winding frame is used to install the winding mechanism. A driving arm structure is installed between the weaving frame and the winding frame, and the driving arm structure is generally bent to avoid the cloth and the support foot. The weaving machine will rotate when weaving the cloth, and the weaving frame drives the winding frame to rotate together through the driving arm structure, so as to facilitate the winding mechanism to wind up the cloth.

[0004] Existing weft knitting machines generally have a variety of sizes, and the corresponding winding frames and weaving frames of different sizes are also different in size. However, the size of the driving arm structure is fixed, and for the connection between the winding frames and weaving frames of different sizes, the driving arm structure of the corresponding size needs to be produced, which reduces the versatility of the driving arm structure. Summary of the invention

[0005] In order to improve the versatility of the driving arm structure, the present application provides an adjustable driving arm structure of a weft knitting machine.

[0006] The present application provides an adjustable driving arm structure of a weft knitting machine, which adopts the following technical solution:

[0007] A kind of adjustable driving arm structure of weft knitting machine comprises an upper mounting seat and a lower mounting seat, the upper mounting seat is equipped with a connecting arm, the lower mounting seat is rotatably equipped with a mounting block, the mounting block is provided with a first telescopic mechanism, the first telescopic mechanism comprises a first connecting plate, a second connecting plate and a locking assembly, one side of the first connecting plate is hinged to the mounting block, the second connecting plate slides and abuts against one side of the first connecting plate, the side of the second connecting plate away from the lower mounting seat is hinged to an end of the connecting arm away from the upper mounting seat, and the locking assembly is used to drive the first connecting plate and the second connecting plate to be tightened or loosened against each other.

[0008] By adopting the above technical solution, after the lower mounting seat is installed on the winding frame and the upper mounting seat is installed on the weaving frame, the first connecting plate and the second connecting plate are pushed to slide relative to each other, thereby facilitating the adjustment of the length of the driving arm structure. After adjusting the length of the driving arm structure, the first connecting plate and the second connecting plate are fixed by a locking assembly, thereby limiting the relative movement of the first connecting plate and the second connecting plate. The length of the driving arm structure is adjustable, so that the driving arm structure is conveniently applicable to weft knitting machines of different sizes, thereby improving the versatility of the driving arm structure.

[0009] Optionally, the lower mounting seat is U-shaped, and a mounting rod is installed on the lower mounting seat. The mounting rod rotates and passes through the mounting block. The mounting rod sleeve is provided with a first spring, and the mounting rod threaded sleeve is provided with a first limiting ring. The mounting block is located between the first spring and the first limiting ring.

[0010] By adopting the above technical solution, a winding mechanism is installed on the winding frame, and the winding mechanism will wind up the fabric, so that the gravity of the winding frame is large, and then the rotation resistance of the winding frame is also large. When the weaving frame drives the winding frame to rotate through the driving arm structure, the installation block squeezes the first spring, and the first spring performs buffering, thereby reducing the occurrence of a connection break between the driving arm structure and the winding frame.

[0011] Optionally, the locking assembly includes a first slider, a screw, a first gasket and a second limiting ring, the first slider is fixedly mounted on the first connecting plate, the second connecting plate is provided with a first sliding opening for the first slider to slide, one end of the screw is fixedly connected to a side of the first slider away from the first connecting plate, the first gasket is sleeved on the screw, and the second limiting ring is spirally sleeved on the screw.

[0012] By adopting the above technical solution, after adjusting the positions of the first connecting plate and the second connecting plate, the first gasket is inserted into the screw, and then the second limiting ring is screwed into the screw. The second limiting ring drives the second connecting plate to press the first connecting plate through the first gasket, thereby conveniently limiting the relative movement of the first connecting plate and the second connecting plate.

[0013] When the positions of the first connecting plate and the second connecting plate need to be adjusted, the second limiting ring is unscrewed from the screw rod to loosen the first connecting plate and the second connecting plate, thereby facilitating the adjustment of the positions of the first connecting plate and the second connecting plate.

[0014] Optionally, the locking assembly includes a sliding rod, a second spring, a limit block, a second gasket and a second sliding block, one end of the sliding rod is connected to the first connecting plate, the second connecting plate is provided with a second sliding opening for sliding the sliding rod, the limit block is fixedly installed at an end of the sliding rod away from the first connecting plate, the second gasket and the second spring are both sleeved on the sliding rod, the second spring is located between the second gasket and the limit block, the second spring is used to push the second gasket to move toward the first connecting plate, the second sliding block is fixedly installed on a side of the first connecting plate close to the second connecting plate, and the second connecting plate is provided with a third sliding opening for sliding the second sliding block.

[0015] By adopting the above technical solution, the second spring drives the second gasket to press the second connecting plate, so that the first connecting plate and the second connecting plate are pressed against each other. By pressing the first connecting plate and the second connecting plate against each other, the relative movement of the first connecting plate and the second connecting plate is restricted.

[0016] The second gasket is pulled away from the second connecting plate, thereby loosening the first connecting plate and the second connecting plate, thereby facilitating adjustment of the positions of the first connecting plate and the second connecting plate.

[0017] Optionally, a limit rod is fixedly installed on the rod body of the sliding rod, the first connecting plate is provided with a through hole for the sliding rod to pass through, and the inner wall of the through hole is provided with a limit groove for the limit rod to slide through, and the limit groove includes a first sub-groove and a second sub-groove, and the first sub-groove and the second sub-groove are both inclined from one end to the other and gradually away from the limit block, the end of the first sub-groove and the second sub-groove close to the second connecting plate is the high end, and the end of the first sub-groove and the second sub-groove away from the second connecting plate is the low end, the low end of the first sub-groove is connected to the low end of the second sub-groove, and the distance between the high end of the first sub-groove and the second connecting plate is smaller than the distance between the high end of the second sub-groove and the second connecting plate.

[0018] By adopting the above technical solution, the limit rod is initially located at the high end of the first sub-groove, and the distance between the high end of the first sub-groove and the second connecting plate is small, so that the limit block is away from the second gasket, thereby reducing the elastic force of the second spring on the second gasket. The elastic force of the second spring on the second gasket is reduced, thereby loosening the first connecting plate and the second connecting plate, thereby facilitating the movement of the first connecting plate and the second connecting plate.

[0019] Press and rotate the limit block to allow the limit rod to enter the high end of the second sub-slot from the first sub-slot. The distance between the high end of the second sub-slot and the second connecting plate is large, so that the limit block is close to the second gasket, thereby increasing the elastic force of the second spring on the second gasket. By increasing the elastic force of the second spring on the second gasket, it is convenient to press the first connecting plate and the second connecting plate against each other, thereby limiting the relative movement of the first connecting plate and the second connecting plate.

[0020] Optionally, there are multiple limit grooves, and the multiple limit grooves are arranged along the circumference of the inner wall of the through hole. The limit grooves also include a third sub-groove and a fourth sub-groove. The third sub-groove and the fourth sub-groove are both inclined from one end to the other and gradually away from the limit block. The end of the third sub-groove and the fourth sub-groove close to the second connecting plate is the high end, and the end of the third sub-groove and the fourth sub-groove away from the second connecting plate is the low end. The high end of the third sub-groove is connected to the high end of the first sub-groove, and the high end of the fourth sub-groove is connected to the high end of the second sub-groove. Between two adjacent limit grooves, the low end of the third sub-groove of one limit groove is connected to the low end of the fourth sub-groove of the other limit groove.

[0021] By adopting the above technical solution, when pressing and rotating the limit block to adjust the elastic force of the second spring on the second gasket, the direction of rotating the limit block can be clockwise or counterclockwise, thereby facilitating the adjustment of the elastic force of the second spring on the second gasket.

[0022] Optionally, the inner wall of the through hole is provided with a first guide groove along the extension direction of the lower end of the first sub-groove, the inner wall of the through hole is provided with a second guide groove along the extension direction of the higher end of the second sub-groove, the inner wall of the through hole is provided with a third guide groove along the extension direction of the higher end of the third sub-groove, and the inner wall of the through hole is provided with a fourth guide groove along the extension direction of the lower end of the fourth sub-groove.

[0023] By adopting the above technical solution, after pressing the limit block, the moving path of the limit rod is guided by the first guide groove, the second guide groove, the third guide groove and the fourth guide groove, thereby facilitating the automatic rotation of the limit block.

[0024] Optionally, the connecting arm includes a plurality of second telescopic mechanisms, the second telescopic mechanisms have the same structure as the first telescopic mechanism, and the mounting block, the first telescopic mechanism, the plurality of second telescopic mechanisms and the upper mounting seat are hinged in sequence.

[0025] By adopting the above technical solution, the driving arm structure is composed of the first telescopic mechanism and the second telescopic mechanism, thereby increasing the adjustment range of the driving arm structure. At the same time, the mounting block, the first telescopic mechanism, the plurality of second telescopic mechanisms and the upper mounting seat are hinged in sequence, thereby facilitating the driving arm structure to avoid the cloth and the supporting foot after adjusting its shape.

[0026] Optionally, the first connecting plate and the second connecting plate are both provided with a telescopic hole, a pressure rod is passed through the telescopic hole, and the first connecting plate and the second connecting plate are both provided with a driving port on opposite sides, the driving port is connected to the telescopic hole, a driving block is slidably arranged inside the driving port, one side of the driving block is inclined, and the inclined side of the driving block is used to squeeze each other with one end of the pressure rod, the other end of the pressure rod located on the first connecting plate is used to tighten the hinge shaft at the hinge position of the first connecting plate, and the other end of the pressure rod located on the second connecting plate is used to tighten the hinge shaft at the hinge position of the second connecting plate.

[0027] By adopting the above technical solution, after the locking assembly drives the first connecting plate and the second connecting plate to be pressed together, the driving block retracts into the driving port, the inclined side of the driving block is squeezed by the pressure rod, and the end of the pressure rod away from the driving block will press the hinge shaft, thereby facilitating the limitation of the rotation between the first connecting plate and the mounting block, as well as the rotation between the second connecting plate and the connecting arm.

[0028] Optionally, a clamping block is fixedly mounted on the side wall of the driving block, and a clamping groove for the clamping block to slide is formed on the inner wall of the driving opening, and the clamping groove is arranged along the depth of the driving opening.

[0029] By adopting the above technical solution, the clamping block cooperates with the clamping slot, thereby facilitating the sliding of the driving block inside the driving port and limiting the sliding of the driving block out of the driving port.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] According to the size of the weft knitting machine on which the driving arm structure is installed, the first connecting plate and the second connecting plate are slid to adjust the length of the driving arm structure so that the driving arm structure has sufficient length to be connected between the winding frame and the weaving frame of the weft knitting machine, and then the locking assembly is used to squeeze the first connecting plate and the second connecting plate against each other so as to keep them fixed. The adjustable length of the driving arm structure improves the versatility of the driving arm structure.

[0032] Press the limit block to move it between the first sub-groove, the second sub-groove, the third sub-groove and the fourth sub-groove, so as to facilitate the adjustment of the elastic force of the second spring on the second gasket, and then facilitate the control of the first connecting plates to press against or loosen each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure in which the driving arm structure of Example 1 of the present application is installed between the weaving frame and the winding frame;

[0034] Figure 2 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0035] Figure 3 is an exploded view of the first telescopic mechanism of Example 1 of the present application;

[0036] Figure 4 It is a schematic diagram of the overall structure of Example 2 of the present application;

[0037] Figure 5 is a structural schematic diagram of the first telescopic mechanism of Example 2 of the present application;

[0038] Figure 6 yes Figure 5 Sectional view at AA;

[0039] Figure 7 is an exploded view of the first telescopic mechanism of Example 2 of the present application;

[0040] Figure 8 It is an expanded view of the inner wall of the through hole in Example 2 of the present application, and a schematic diagram of the movement route of the limit rod inside the guide groove;

[0041] Fig. 9 It is a schematic diagram of the overall structure of Example 3 of the present application;

[0042] Fig.10 is a structural schematic diagram of the first telescopic mechanism of Example 3 of the present application;

[0043] Fig.11 yes Fig.10 Cross-sectional view at BB;

[0044] Fig.12 yes Fig.11 Enlarged view at A.

[0045] Description of reference numerals: 1. winding frame; 2. weaving frame; 3. supporting foot; 4. supporting ring; 5. upper mounting seat; 6. lower mounting seat; 7. mounting rod; 8. mounting block; 9. first telescopic mechanism; 91. first connecting plate; 92. second connecting plate; 93. locking assembly; 931. first slider; 932. screw rod; 933. first gasket; 934. second limiting ring; 935. sliding rod; 936. second spring; 937. limiting block; 938. second gasket; 939. second slider; 10. connecting arm; 101 , second telescopic mechanism; 11, first sliding mouth; 12, first spring; 13, first limiting ring; 14, limiting rod; 15, through hole; 16, limiting groove; 161, first sub-groove; 162, second sub-groove; 163, third sub-groove; 164, fourth sub-groove; 17, first guide groove; 18, second guide groove; 19, third guide groove; 20, fourth guide groove; 21, second sliding mouth; 22, third sliding mouth; 23, telescopic hole; 24, pressure rod; 25, drive mouth; 26, drive block; 27, clamping block; 28, clamping groove. DETAILED DESCRIPTION

[0046] The following is combined with Figure 1-12This application is described in further detail.

[0047] Example 1

[0048] An embodiment of the present application discloses an adjustable driving arm structure of a weft knitting machine.

[0049] Reference Figure 1 , Figure 2 , an adjustable driving arm structure of a weft knitting machine. It includes an upper mounting seat 5 and a lower mounting seat 6. The upper mounting seat 5 is used to be fixedly connected to a weaving frame 2 of the weft knitting machine, and the lower mounting seat 6 is used to be fixedly connected to a winding frame 1 of the weft knitting machine. The upper mounting seat 5 is fixedly mounted with a connecting arm 10, which is bent to avoid the cloth wound on the winding frame 1, and a supporting foot 3 of the weft knitting machine.

[0050] The lower mounting seat 6 is U-shaped, and a mounting rod 7 is installed on the lower mounting seat 6. The mounting rod 7 has threads, and the mounting rod 7 is rotated to pass through the lower mounting seat 6 and then limited by a nut, so that the mounting rod 7 is installed on the lower mounting seat 6. The mounting rod 7 is provided with a mounting block 8, and the mounting rod 7 rotates to pass through the mounting block 8, and the mounting block 8 can slide on the mounting rod 7.

[0051] Reference Figure 2 , Figure 3 The mounting block 8 is provided with a first telescopic mechanism 9, which includes a first connecting plate 91, a second connecting plate 92 and a locking assembly 93. One side of the first connecting plate 91 is hinged to the mounting block 8, and the second connecting plate 92 slides against one side of the first connecting plate 91. The side of the second connecting plate 92 away from the lower mounting seat 6 is hinged to an end of the connecting arm 10 away from the upper mounting seat 5.

[0052] The locking assembly 93 includes a first slider 931, a screw rod 932, a first gasket 933, and a second limiting ring 934. The first slider 931 is fixedly mounted on the first connecting plate 91, and the second connecting plate 92 is provided with a first sliding opening 11 for the first slider 931 to slide. One end of the screw rod 932 is fixedly connected to a side of the first slider 931 away from the first connecting plate 91, the first gasket 933 is sleeved on the screw rod 932, and the second limiting ring 934 is spirally sleeved on the screw rod 932.

[0053] The upper mounting seat 5 is fixed to the weaving frame 2 of the weft knitting machine, and the lower mounting seat 6 is fixed to the winding frame 1 of the weft knitting machine, and then the first connecting plate 91 and the second connecting plate 92 are rotated, so that the first connecting plate 91 and the second connecting plate are pressed against each other and the first slider 931 enters the first sliding opening 11. Then the first gasket 933 is inserted into the screw rod 932, and then the second limiting ring 934 is screwed into the screw rod 932. After the second limiting ring 934 is screwed into the screw rod 932, the second limiting ring 934 drives the first connecting plate 91 and the second connecting plate 92 to press against each other, thereby limiting the relative sliding of the first connecting plate 91 and the second connecting plate 92.

[0054] When the length of the driving arm structure needs to be adjusted, the second limiting ring 934 is unscrewed from the screw rod 932, thereby loosening the first connecting plate 91 and the second connecting plate 92, thereby facilitating the adjustment of the length of the driving arm structure. The adjustable length of the driving arm structure facilitates the driving arm structure to be applicable to weft knitting machines of different sizes, thereby improving the versatility of the driving arm structure.

[0055] There is a structure supporting the winding frame 1 below, and the weight of the winding frame 1 will not drive the first telescopic mechanism 9 to move downward.

[0056] Reference Figure 2 , the mounting rod 7 is sleeved with a first spring 12, the mounting rod 7 is threadedly sleeved with a first limiting ring 13, and the mounting block 8 is located between the first spring 12 and the first limiting ring 13. After the driving arm structure is connected between the winding frame 1 and the weaving frame 2 of the weft knitting machine, when the weft knitting machine is working, the weaving frame 2 and the winding frame 1 are transmitted through the driving arm, so that the weaving frame 2 and the winding frame 1 rotate together. Since a winding mechanism is installed on the winding frame 1, the winding mechanism will wind up the fabric, so that the winding frame 1 is heavy, and the rotation resistance of the winding frame 1 is increased. When the weaving frame 2 and the winding frame 1 just start to rotate, the first spring 12 is used for buffering, thereby reducing the possibility of damage to the connection between the driving arm structure and the winding frame 1.

[0057] The implementation principle of the adjustable driving arm structure of a weft knitting machine in the embodiment of the present application is as follows: after the upper mounting seat 5 and the lower mounting seat 6 are mounted on the weft knitting machine, when the weft knitting machine drives the weaving frame 2 or the winding frame 1 to rotate, the other one also rotates together. The length of the driving arm structure is adjustable through the first telescopic mechanism 9, so that the driving arm structure is conveniently installed on weft knitting machines of different sizes, thereby improving the versatility of the driving arm structure.

[0058] Example 2

[0059] An embodiment of the present application discloses an adjustable driving arm structure of a weft knitting machine.

[0060] Reference Figure 4 , Figure 5 , Figure 6 The difference between the adjustable driving arm structure of a weft knitting machine in the embodiment of the present application and that in the embodiment 1 is that the structure of the locking assembly 93 is different. The locking assembly 93 in the embodiment of the present application includes a sliding rod 935, a second spring 936, a limiting block 937, a second gasket 938 and a second sliding block 939.

[0061] Reference Figure 6 , Figure 7The rod body at one end of the slide rod 935 is fixedly mounted with a limit rod 14, and the first connecting plate 91 is provided with a through hole 15 for the slide rod 935 to pass through. The inner wall of the through hole 15 is provided with a plurality of limit grooves 16 for the limit rod 14 to slide through, and the plurality of limit grooves 16 are arranged along the circumferential direction of the inner wall of the through hole 15.

[0062] Reference Figure 8 The limiting groove 16 includes a first sub-groove 161, a second sub-groove 162, a third sub-groove 163 and a fourth sub-groove 164. The first sub-groove 161, the second sub-groove 162, the third sub-groove 163 and the fourth sub-groove 164 are all inclined from one end to the other end and gradually away from the limiting block 937. The ends of the first sub-groove 161, the second sub-groove 162, the third sub-groove 163 and the fourth sub-groove 164 close to the second connecting plate 92 are high ends, and the ends of the first sub-groove 161, the second sub-groove 162, the third sub-groove 163 and the fourth sub-groove 164 away from the second connecting plate 92 are low ends.

[0063] The lower end of the first sub-groove 161 is connected to the lower end of the second sub-groove 162, and the distance between the upper end of the first sub-groove 161 and the second connecting plate 92 is smaller than the distance between the upper end of the second sub-groove 162 and the second connecting plate 92. The upper end of the third sub-groove 163 is connected to the upper end of the first sub-groove 161, and the upper end of the fourth sub-groove 164 is connected to the upper end of the second sub-groove 162. Between two adjacent limiting grooves 16, the lower end of the third sub-groove 163 of one limiting groove 16 is connected to the lower end of the fourth sub-groove 164 of the other limiting groove 16.

[0064] Reference Figure 8 The inner wall of the through hole 15 is provided with a first guide groove 17 along the extension direction of the lower end of the first sub-groove 161, the inner wall of the through hole 15 is provided with a second guide groove 18 along the extension direction of the upper end of the second sub-groove 162, the inner wall of the through hole 15 is provided with a third guide groove 19 along the extension direction of the upper end of the third sub-groove 163, and the inner wall of the through hole 15 is provided with a fourth guide groove 20 along the extension direction of the lower end of the fourth sub-groove 164.

[0065] Reference Figure 6 , Figure 7, the second connecting plate 92 is provided with a second sliding opening 21 for the sliding rod 935 to slide. The limiting block 937 is fixedly installed at one end of the sliding rod 935 away from the first connecting plate 91, and the second gasket 938 and the second spring 936 are both sleeved on the sliding rod 935. The second spring 936 is located between the second gasket 938 and the limiting block 937, and the second spring 936 is used to push the second gasket 938 to move toward the first connecting plate 91. The second slider 939 is fixedly installed on a side of the second connecting plate 92 close to the first connecting plate 91, and the first connecting plate 91 is provided with a third sliding opening 22 for the second slider 939 to slide. The sliding rod 935 is inserted into the second sliding opening 21, and the second slider 939 is inside the third sliding opening 22, thereby limiting the rotation between the first connecting plate 91 and the second connecting plate 92 with the sliding rod 935 as the axis.

[0066] The implementation principle of the adjustable driving arm structure of a weft knitting machine in an embodiment of the present application is: at the beginning, the limit rod 14 is located in the third guide groove 19, and the second spring 936 pushes the limit block 937 and the second gasket 938 away from each other, and the limit block 937 drives the sliding rod 935 to move, so that the limit rod 14 is tightly against the top of the third guide groove 19.

[0067] Since the high end of the first sub-groove 161 is close to the second connecting plate 92, when the limit rod 14 is at the top end of the third guide groove 19, the distance between the limit block 937 and the second gasket 938 is far, and the elastic force of the second spring 936 between the limit block 937 and the second gasket 938 is small, thereby loosening the first connecting plate 91 and the second connecting plate 92, thereby facilitating the relative movement of the first connecting plate 91 and the second connecting plate 92 and adjusting the length of the driving arm structure.

[0068] After adjusting the length of the driving arm structure, the limit block 937 is pressed, and the limit block 937 drives the slide bar 935 to insert into the through hole 15, so that the limit rod 14 is pressed against the inner wall of the third guide groove 19 and slides downward, and then the limit rod 14 enters the first sub-groove 161. After the limit rod 14 enters the first sub-groove 161, the limit block 937 is kept pressed, so that the limit rod 14 enters the first guide groove 17 from the first sub-groove 161.

[0069] After the limiting rod 14 enters the first guide groove 17, the limiting block 937 is released, and the second spring 936 drives the limiting block 937 and the second gasket 938 to move away from each other. The limiting block 937 drives the limiting rod 14 to move toward the second connecting plate 92 through the sliding rod 935, so that the limiting rod 14 enters the second sub-groove 162 from the first guide groove 17, and then enters the second guide groove 18 from the second sub-groove 162.

[0070] Since the high end of the second sub-groove 162 is far from the second connecting plate 92, when the limiting rod 14 is at the top end of the second guide groove 18, the distance between the limiting block 937 and the second gasket 938 is close, and the elastic force of the second spring 936 between the limiting block 937 and the second gasket 938 is large, so that the first connecting plate 91 and the second connecting plate 92 are pressed against each other, thereby facilitating the limitation of the relative movement of the first connecting plate 91 and the second connecting plate 92.

[0071] By cooperating among the first sub-groove 161, the second sub-groove 162, the third sub-groove 163, the fourth sub-groove 164, the first guide groove 17, the second guide groove 18, the third guide groove 19 and the fourth guide groove 20, the elastic force of the second spring 936 can be adjusted by pressing the limit block 937, thereby facilitating the control of the tightness or looseness between the first connecting plate 91 and the second connecting plate 92.

[0072] Example 3

[0073] An embodiment of the present application discloses an adjustable driving arm structure of a weft knitting machine.

[0074] Reference Fig. 9 , Fig.10 The difference between the adjustable drive arm structure of a weft knitting machine in the embodiment of the present application and the embodiment 1 is that the connecting arm 10 includes a plurality of second telescopic mechanisms 101, the second telescopic mechanisms 101 have the same structure as the first telescopic mechanism 9, and the mounting block 8, the first telescopic mechanism 9, the plurality of second telescopic mechanisms 101 and the upper mounting seat 5 are hinged in sequence. When the mounting block 8, the first telescopic mechanism 9, the plurality of second telescopic mechanisms 101 and the upper mounting seat 5 are hinged in sequence, there will be a hinge shaft between the adjacent ones, and the hinge shaft rotates through the two adjacent ones, and the two ends of the hinge shaft are limited to prevent separation, thereby realizing the hinge.

[0075] The length adjustment range of the driving arm structure is increased by the second telescopic mechanism 101. At the same time, the mounting block 8, the first telescopic mechanism 9, the plurality of second telescopic mechanisms 101 and the upper mounting seat 5 are hinged in sequence, so that the driving arm structure can be bent to avoid the supporting foot 3 and the cloth.

[0076] Reference Fig.11 , Fig.12The first connecting plate 91 and the second connecting plate 92 are both provided with telescopic holes 23, and a pressure rod 24 is inserted into the telescopic holes 23. The first connecting plate 91 and the second connecting plate 92 are both provided with driving ports 25 on opposite sides, and the driving ports 25 are connected to the telescopic holes 23. A driving block 26 is slidably arranged inside the driving port 25, and one side of the driving block 26 is tilted, and the tilted side of the driving block 26 is used to press against one end of the pressure rod 24, and the other end of the pressure rod 24 located on the first connecting plate 91 is used to press the hinge shaft at the hinge position of the first connecting plate 91, and the other end of the pressure rod 24 located on the second connecting plate 92 is used to press the hinge shaft at the hinge position of the second connecting plate 92.

[0077] After the driving arm structure is adjusted in length and installed on the weft knitting machine, the locking assembly 93 drives the first connecting plate 91 and the second connecting plate 92 to press against each other, and the driving block 26 is squeezed into the driving port 25, and the driving block 26 squeezes the pressure rod 24, so that the pressure rod 24 presses against the hinge shaft. When the weft knitting machine is working, the weaving frame 2 drives the winding frame 1 to rotate through the driving arm structure, and the pressure rod 24 presses against the hinge shaft, thereby reducing the automatic bending and shaking of the driving arm structure due to the centrifugal force.

[0078] A clamping block 27 is fixedly mounted on the side wall of the driving block 26, and a clamping groove 28 is provided on the inner wall of the driving opening 25 for the clamping block 27 to slide, and the clamping groove 28 is arranged along the depth of the driving opening 25. The clamping block 27 cooperates with the clamping groove 28, thereby facilitating the sliding of the driving block 26 inside the driving opening 25 and limiting the sliding of the driving block 26 out of the driving opening 25.

[0079] The first connecting plate 91 and the second connecting plate 92 in the second telescopic mechanism 101 are provided with a pressing rod 24 , a driving block 26 and a clamping block 27 respectively.

[0080] The implementation principle of the adjustable driving arm structure of the weft knitting machine in the embodiment of the present application is as follows: the length of the first telescopic mechanism 9 and the plurality of second telescopic mechanisms 101 are adjustable, thereby increasing the length adjustment range of the driving arm structure. At the same time, the first telescopic mechanism 9 and the second telescopic mechanism 101 can both rotate, thereby facilitating the adjustment of the bending angle of the driving arm structure, thereby facilitating the driving arm structure to avoid the supporting foot 3 and the fabric.

[0081] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable driving arm structure of a weft knitting machine, characterized in that: The invention comprises an upper mounting seat (5) and a lower mounting seat (6), wherein the upper mounting seat (5) is provided with a connecting arm (10), and the lower mounting seat (6) is rotatably provided with a mounting block (8), and the mounting block (8) is provided with a first telescopic mechanism (9), wherein the first telescopic mechanism (9) comprises a first connecting plate (91), a second connecting plate (92) and a locking assembly (93), wherein one side of the first connecting plate (91) is hinged to the mounting block (8), the second connecting plate (92) slides against one side of the first connecting plate (91), the side of the second connecting plate (92) away from the lower mounting seat (6) is hinged to one end of the connecting arm (10) away from the upper mounting seat (5), and the locking assembly (93) is used to drive the first connecting plate (91) and the second connecting plate (92) to be pressed against or loosened against each other; The lower mounting seat (6) is U-shaped, and a mounting rod (7) is mounted on the lower mounting seat (6). The mounting rod (7) rotates to penetrate the mounting block (8), the mounting rod (7) is sleeved with a first spring (12), the mounting rod (7) is threadedly sleeved with a first limiting ring (13), and the mounting block (8) is located between the first spring (12) and the first limiting ring (13); The locking assembly (93) comprises a slide bar (935), a second spring (936), a stop block (937), a second gasket (938) and a second slider (939); one end of the slide bar (935) is connected to the first connecting plate (91); the second connecting plate (92) is provided with a second sliding opening (21) for the slide bar (935) to slide; the stop block (937) is fixedly mounted on one end of the slide bar (935) away from the first connecting plate (91); the second gasket (938) and The second spring (936) is sleeved on the slide rod (935), the second spring (936) is located between the second gasket (938) and the limit block (937), the second spring (936) is used to push the second gasket (938) to move toward the first connecting plate (91), the second sliding block (939) is fixedly mounted on a side of the second connecting plate (92) close to the first connecting plate (91), and the first connecting plate (91) is provided with a third sliding opening (22) for the second sliding block (939) to slide; The rod body of the sliding rod (935) is fixedly mounted with a limit rod (14); the first connecting plate (91) is provided with a through hole (15) for the sliding rod (935) to pass through; the inner wall of the through hole (15) is provided with a limit groove (16) for the limit rod (14) to slide through; the limit groove (16) comprises a first sub-groove (161) and a second sub-groove (162); the first sub-groove (161) and the second sub-groove (162) are both inclined from one end to the other and gradually away from the limit block (937). , one end of the first sub-groove (161) and the second sub-groove (162) close to the second connecting plate (92) is a high end, and one end of the first sub-groove (161) and the second sub-groove (162) away from the second connecting plate (92) is a low end, the low end of the first sub-groove (161) is connected to the low end of the second sub-groove (162), and the distance between the high end of the first sub-groove (161) and the second connecting plate (92) is smaller than the distance between the high end of the second sub-groove (162) and the second connecting plate (92); There are a plurality of the limiting grooves (16), and the plurality of the limiting grooves (16) are arranged along the circumferential direction of the inner wall of the through hole (15). The limiting grooves (16) further include a third sub-groove (163) and a fourth sub-groove (164). The third sub-groove (163) and the fourth sub-groove (164) are arranged to be inclined from one end to the other and gradually move away from the limiting block (937). The ends of the third sub-groove (163) and the fourth sub-groove (164) close to the second connecting plate (92) are high ends. The ends of the third sub-groove (163) and the fourth sub-groove (164) away from the second connecting plate (92) are low ends, the high end of the third sub-groove (163) is connected to the high end of the first sub-groove (161), the high end of the fourth sub-groove (164) is connected to the high end of the second sub-groove (162), and between two adjacent limiting grooves (16), the low end of the third sub-groove (163) of one limiting groove (16) is connected to the low end of the fourth sub-groove (164) of the other limiting groove (16); The inner wall of the through hole (15) is provided with a first guide groove (17) along the extension direction of the lower end of the first sub-groove (161), the inner wall of the through hole (15) is provided with a second guide groove (18) along the extension direction of the upper end of the second sub-groove (162), the inner wall of the through hole (15) is provided with a third guide groove (19) along the extension direction of the upper end of the third sub-groove (163), and the inner wall of the through hole (15) is provided with a fourth guide groove (20) along the extension direction of the lower end of the fourth sub-groove (164).

2. The adjustable driving arm structure of a weft knitting machine according to claim 1, characterized in that: The connecting arm (10) comprises a plurality of second telescopic mechanisms (101), the second telescopic mechanisms (101) having the same structure as the first telescopic mechanisms (9), and the mounting block (8), the first telescopic mechanism (9), the plurality of second telescopic mechanisms (101) and the upper mounting seat (5) are hinged in sequence.

3. The adjustable driving arm structure of a weft knitting machine according to claim 1, characterized in that: The first connecting plate (91) and the second connecting plate (92) are both provided with a telescopic hole (23), a pressure rod (24) is inserted into the telescopic hole (23), and the first connecting plate (91) and the second connecting plate (92) are both provided with a driving port (25) on opposite sides, the driving port (25) is connected to the telescopic hole (23), a driving block (26) is slidably arranged inside the driving port (25), one side of the driving block (26) is inclined, and the inclined side of the driving block (26) is used to press against one end of the pressure rod (24), the other end of the pressure rod (24) located on the first connecting plate (91) is used to press the hinge shaft at the hinge position of the first connecting plate (91), and the other end of the pressure rod (24) located on the second connecting plate (92) is used to press the hinge shaft at the hinge position of the second connecting plate (92).

4. The adjustable driving arm structure of a weft knitting machine according to claim 3, characterized in that: A clamping block (27) is fixedly mounted on the side wall of the driving block (26), and a clamping groove (28) for the clamping block (27) to slide is provided on the inner wall of the driving opening (25), and the clamping groove (28) is arranged along the depth of the driving opening (25).

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