A main shuttle cylinder for a hosiery machine

Abstract

This utility model belongs to the field of sock knitting machine accessories, and specifically relates to a main shuttle cylinder for sock knitting machines, which solves the problem of insufficient buffering in the connection between the solenoid valve and the cylinder body. The main shuttle cylinder includes a cylinder body with several power chambers inside. A solenoid valve, corresponding to each power chamber, is mounted on the cylinder body. A docking blind hole is located on the rear side of the cylinder body. A docking protrusion on the front side of the solenoid valve extends into the docking blind hole. A step is provided at the bottom of the docking blind hole, forming a first buffer chamber between the step and the wall of the blind hole. A second buffer chamber is located between the step and the protrusion. An air inlet communicating with the power chamber is located on the step. An air vent connected to an air release channel is located at the bottom of the first buffer chamber. A first air port corresponding to the air inlet and located within the second buffer chamber, and a second air port corresponding to the air vent, are located at the front end of the protrusion. This achieves a buffering effect during the inflation and deflation of the power chambers, reducing the acceleration of inflation and increasing the speed of deflation retraction.

Description

Technical Field

[0001] This utility model belongs to the field of accessories for sock machines, and specifically relates to a main shuttle cylinder for sock machines. Background Technology

[0002] The main shuttle cylinder is the actuator in a sock machine used to drive the main shuttle's movement; it provides driving force through the principle of a cylinder.

[0003] In existing technologies, most main shuttle cylinders consist of a cylinder body and a solenoid valve, with their air ports connected to each other. The solenoid valve controls the input and output of high-pressure gas. However, in most main shuttle cylinders, the air ports of the cylinder body and the solenoid valve are directly connected. Due to overall size limitations, the inner diameter of the channel formed by this air port is small, and there is no buffer space in the middle, which affects the efficiency of air intake and exhaust. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by proposing a main shuttle cylinder for a sock knitting machine.

[0005] To achieve the innovative objectives of this utility model, the following technical solutions can be used:

[0006] A main shuttle cylinder for a sock machine includes a cylinder body. The cylinder body contains at least one set of power chambers. The cylinder body has solenoid valves corresponding to each power chamber. A blind docking hole is located on the rear side of the cylinder body. A docking protrusion is located on the front side of each solenoid valve. The docking protrusion extends into the blind docking hole. A step is provided at the bottom of the blind docking hole. A first buffer chamber is formed between the step and the wall of the blind docking hole. A second buffer chamber is provided between the step and the protrusion. An air inlet communicating with the power chamber is provided on the step. An air vent connected to an air venting channel is provided at the bottom of the first buffer chamber. A first air port corresponding to the air inlet and located within the second buffer chamber, and a second air port corresponding to the air vent, are provided at the front end of the protrusion.

[0007] This utility model's main shuttle cylinder is suitable for sock machines and is used to drive the main shuttle's movement. The cylinder body is equipped with a linear power chamber, which is connected to an air inlet. High-pressure gas is input into the power chamber through the air inlet to drive the internal piston head forward. The solenoid valve is connected to the docking blind hole through a docking protrusion. The front end of the docking protrusion is provided with a first air port and a second air port. When the piston head needs to retract and reset, the high-pressure gas in the power chamber can flow out in reverse from the air inlet, pass through the air passage inside the solenoid valve, enter from the second air port, and be discharged from the vent hole on the cylinder body. In particular, the main shuttle cylinder has its air inlet located on the abutment step. After the docking protrusion is installed in place, its front end face abuts against the abutment step, ensuring the connection between the air inlet and the first air port. Of course, a corresponding sealing structure can also be set on the abutment surface of the docking protrusion and the abutment step to prevent leakage at the joint. In the axial direction, the bottom surface of the docking blind hole is lower than the abutment step, so that the front end face of the docking protrusion will not come into contact with the bottom surface of the docking blind hole. The space between them is the first buffer chamber. That is to say, during the venting process, after the high-pressure gas is discharged from the second air port of the solenoid valve, it first enters the first buffer chamber. Due to the sudden increase in space, the exhaust efficiency increases, and the gas is subsequently discharged from the venting hole. Although the diameter of the venting hole is not large, the gas can temporarily gather in the first buffer chamber. The gas pressure will also increase during the gathering process, but overall it is still beneficial to venting. Furthermore, the second buffer chamber between the first air port and the air inlet has a buffering effect during air intake. High-pressure gas is output from the first air port, enters the second buffer chamber first, and then enters the power chamber through the air inlet. Due to the sudden increase in cross-sectional area, the second buffer chamber can reduce the pressure of the high-pressure gas to a certain extent, which is beneficial to reduce the acceleration of the piston head movement and slow down the movement of the main shuttle within a suitable range. The second buffer chamber has the same effect as the first buffer chamber for air release, which will not be elaborated further.

[0008] In the main shuttle cylinder of the aforementioned sock machine, the abutting step extends along the axial direction of the docking blind hole and has a crescent-shaped or semi-circular cross-section. The step surface of the abutting step is perpendicular to the axial direction of the docking blind hole.

[0009] The step surface that abuts against the step is parallel to the bottom surface of the blind hole. The cross-section is crescent-shaped or semi-circular, or even a trapezoid with an arc-shaped top surface. From the radial section, the area of ​​the step abuts against the blind hole is about half of the blind hole, ensuring a large enough venting buffer space. Moreover, the cylindrical shape is easy to process.

[0010] In the main shuttle cylinder of the aforementioned sock machine, the front side of the docking protrusion is provided with an axially recessed buffer blind hole, the abutting step covers the opening of the buffer blind hole, the buffer blind hole and the abutting step form the second buffer cavity, and the first air port is located at the bottom of the buffer blind hole.

[0011] The opening of the buffer blind hole is sealed by the step, and the first air port and the air inlet are located at both ends of the second buffer chamber.

[0012] In the main shuttle cylinder of the sock machine described above, the power chamber includes at least one vertically distributed row, with adjacent rows of power chambers staggered and the spacing between the power chambers in each row being consistent. The arrangement direction of the power chambers is perpendicular to the axial direction of the power chambers.

[0013] The power chamber is provided in multiple arrays, which helps to improve compactness and reduce cylinder volume. In addition, the staggered arrangement of adjacent rows of power chambers avoids the solenoid valve pins of adjacent rows being too close together.

[0014] In the main shuttle cylinder of the sock machine described above, the extension direction of the venting channel is perpendicular to the extension direction of the power chamber, at least one end of the venting channel is connected to the outside atmosphere, and the venting channel is connected to the venting hole through a transition channel.

[0015] The extension direction of the venting channel is adapted to the arrangement direction of a row of power chambers. Adjacent power chambers can each be provided with a venting channel or can share a venting channel. The venting channel is connected to the outside to ensure smooth venting.

[0016] In the main shuttle cylinder of the sock machine described above, the first air port and the second air port are connected by an air passage. A switching component is provided in the air passage, and the air passage between the first air port and the switching component is connected to a high-pressure gas supply component.

[0017] The first and second air ports are connected by an air passage. A switching assembly is located within this air passage. A high-pressure gas supply assembly is connected to the side of the switching assembly near the first air port. When high-pressure gas is input into the power chamber, the switching assembly is closed. When high-pressure gas is released from the power chamber, the switching assembly opens, and the released gas flows through the air passage and into the first buffer chamber via the second air port. Naturally, the piston head's retraction and reset are achieved by a corresponding reset structure, such as using a spring or applying a reset force to the drive rod; the specific method is common knowledge.

[0018] In the main shuttle cylinder of the sock machine described above, the rear end of the solenoid valve is provided with a pin connected to the switching assembly, the outer end of the pin is connected to an integrated circuit board, and the integrated circuit board is electrically connected to the control terminal.

[0019] The solenoid valves on the cylinder block are connected to the integrated circuit board via pins. The integrated circuit board has socket-type contacts corresponding to the positions of each bracket, which is common knowledge. The integrated circuit board is connected to the control terminal via a bus, which improves the level of integration and avoids the problem of messy wiring of each solenoid valve.

[0020] In the main shuttle cylinder of the aforementioned sock machine, a drive rod is inserted at the front end of the power chamber. The drive rod is connected to the piston head inside the power chamber. The front end of the power chamber is open, and a small-diameter end of a positioning ring with a T-shaped cross-section is inserted into the open opening. The positioning ring has a vent hole that extends through the thickness direction. A cover plate is detachably fixed to the front side of the cylinder. The cover plate has a positioning groove and a drive rod through hole. The drive rod passes through the positioning ring and the drive rod through hole. The positioning groove covers the positioning ring.

[0021] The drive rod is driven by the extension and retraction of the piston head, which transmits this motion to the corresponding main shuttle, thus driving the main shuttle. A positioning ring is installed at the front end of the power chamber. The positioning groove on the cover plate corresponds to the position of the positioning ring. The cover plate is fixed to the front side of the cylinder, pressing the positioning ring tightly into the open opening of the power chamber. The inner diameter of the positioning ring is adapted to the outer diameter of the drive rod, with a clearance fit to ensure stable sliding of the drive rod. The inner diameter of the drive rod through-hole is larger than the outer diameter of the drive rod, ensuring that the drive rod can pass through smoothly. The vent hole on the positioning ring connects the chamber on the side of the piston head away from the air inlet to the outside, ensuring that the piston head is pushed out by high-pressure gas.

[0022] In the main shuttle cylinder of the aforementioned sock machine, the inner end of the docking protrusion is provided with a sealing ring groove that extends circumferentially and is radially recessed. A sealing ring is fitted inside the sealing ring groove, and the sealing ring is circumferentially sealed to the inner wall of the docking blind hole.

[0023] The mating protrusion and the mating blind hole are sealed by a sealing ring. Furthermore, a notch is provided on the outer periphery of the front end of the mating protrusion.

[0024] In the main shuttle cylinder of the sock machine described above, a support plate is detachably installed at the bottom of the cylinder body. The support plate is located below the solenoid valves. The solenoid valves are arranged in multiple vertical rows. The bottom row of solenoid valves is supported by the support plate, and the bottom of the non-bottom row of solenoid valves is supported by the top of the adjacent solenoid valve below.

[0025] Multiple rows of solenoid valves are vertically stacked on the support plate, which provides upward support and avoids the connection between the solenoid valve and the cylinder body relying solely on the insertion of the mating protrusion and the mating blind hole to receive force.

[0026] Compared with the prior art, the present invention has the following main advantages:

[0027] 1. The main shuttle cylinder has its air inlet located on the abutment step. After the mating protrusion is installed in place, its front end abuts against the abutment step, ensuring the connection between the air inlet and the first air port. During the venting process, the high-pressure gas is discharged from the second air port of the solenoid valve and first enters the first buffer chamber. Due to the sudden increase in space, the venting efficiency increases. Moreover, the second buffer chamber between the first air port and the air inlet has a buffering effect during air intake. The high-pressure gas output from the first air port first enters the second buffer chamber and then enters the power chamber through the air inlet. Due to the sudden increase in cross-sectional area, the second buffer chamber can reduce the pressure of the high-pressure gas to a certain extent, which helps to reduce the acceleration of the piston head movement and slow down the main shuttle movement within a suitable range. The second buffer chamber has the same effect as the first buffer chamber for venting.

[0028] 2. The array arrangement of multiple power chambers helps to improve compactness and reduce cylinder volume. In addition, the staggered arrangement of adjacent power chambers avoids the solenoid valve pins of adjacent rows being too close together.

[0029] 3. The solenoid valves on the cylinder block are connected to the integrated circuit board via pins. The integrated circuit board has socket-type contacts corresponding to the positions of each bracket. The integrated circuit board is connected to the control terminal via a bus, which improves the level of integration and avoids the problem of messy wiring of each solenoid valve.

[0030] 4. A positioning ring is set at the front end of the power chamber, and the cover plate is fixed to the front side of the cylinder block. The positioning ring is pressed into the open opening of the power chamber. The vent hole on the positioning ring allows the chamber on the side of the piston head away from the air inlet to communicate with the outside, ensuring that the piston head is pushed out by high-pressure gas.

[0031] 5. Multiple rows of solenoid valves are vertically stacked on the support plate, which can provide upward support force, avoiding the connection between the solenoid valve and the cylinder body only receiving force through the insertion of the mating protrusion and the mating blind hole. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram from the rear view provided by this utility model;

[0033] Figure 2 This is a structural schematic diagram from the front view provided by this utility model;

[0034] Figure 3 This is a cross-sectional schematic diagram of the power cavity provided by this utility model;

[0035] Figure 4 This is a schematic diagram of the cylinder block provided by this utility model;

[0036] Figure 5 This is a schematic diagram of the structure of the solenoid valve provided by this utility model;

[0037] Figure 6This is a schematic diagram of the positioning ring provided by this utility model;

[0038] Figure 7 This is a schematic diagram of the structure of the cover plate provided by this utility model.

[0039] In the figure, cylinder 1, power chamber 2, solenoid valve 3, docking blind hole 4, docking protrusion 5, abutment step 6, first buffer chamber 7, second buffer chamber 9, air inlet 10, venting channel 11, venting hole 12, first air port 13, second air port 15, buffer blind hole 17, pin 20, drive rod 21, piston head 22, positioning ring 23, vent hole 24, cover plate 25, positioning groove 26, drive rod through hole 27, sealing ring groove 28, and support plate 29. Detailed Implementation

[0040] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0041] Specific implementation examples Figure 1-7 As shown, the main shuttle cylinder of this sock machine includes a cylinder body 1, and at least 9 sets of power chambers 2 are provided inside the cylinder body 1. The cylinder body 1 is provided with solenoid valves 3 corresponding to the power chambers 2 one by one. A docking blind hole 4 is provided on the rear side of the cylinder body 1, and a docking protrusion 5 is provided on the front side of the solenoid valve 3. The docking protrusion 5 extends into the docking blind hole 4. A step 6 is provided at the bottom of the docking blind hole 4. A first buffer chamber 7 is formed between the step 6 and the wall of the docking blind hole 4. A second buffer chamber 9 is provided between the step 6 and the docking protrusion 5. An air inlet 10 communicating with the power chamber 2 is provided on the step 6. An air outlet 12 connected to the air outlet channel 11 is provided at the bottom of the first buffer chamber 7. A first air port 13 corresponding to the air inlet 10 and located in the second buffer chamber 9 and a second air port 15 corresponding to the air outlet 12 are provided at the front end of the docking protrusion 5.

[0042] Specifically, this main shuttle cylinder is suitable for sock machines and is used to drive the main shuttle's movement. The cylinder body 1 is equipped with a linear power chamber 2, which is connected to the air inlet 10. High-pressure gas is input into the power chamber 2 through the air inlet 10 to drive the internal piston head 22 forward. The solenoid valve 3 is connected to the docking blind hole 4 through the docking protrusion 5. The front end of the docking protrusion 5 is provided with a first air port 13 and a second air port 15. When the piston head 22 needs to be retracted and reset, the high-pressure gas in the power chamber 2 can flow out in the opposite direction from the air inlet 10, pass through the air passage inside the solenoid valve 3, enter from the second air port 15, and be discharged from the vent hole 12 on the cylinder body 1. In particular, the main shuttle cylinder has the air inlet 10 set on the abutment step 6. After the docking protrusion 5 is installed in place, the front end face abuts against the abutment step 6 to ensure the connection between the air inlet 10 and the first air port 13. Of course, a corresponding sealing structure can also be set on the abutment surface of the docking protrusion 5 and the abutment step 6 to avoid leakage at the joint. In the axial direction, the bottom surface of the docking blind hole 4 is lower than the abutment step 6, so that the front end face of the docking protrusion 5 will not come into contact with the bottom surface of the docking blind hole 4. The space between them is the first buffer chamber 7. That is to say, during the venting process, after the high-pressure gas is discharged from the second air port 15 of the solenoid valve 3, it first enters the first buffer chamber 7. Due to the sudden increase in space, the venting efficiency increases, and the gas is subsequently discharged from the venting hole 12. Although the diameter of the venting hole 12 is not large, the gas can temporarily gather in the first buffer chamber 7. The gas pressure will also increase during the gathering process, but overall it is still beneficial to venting. Furthermore, the second buffer chamber 9 between the first air port 13 and the air inlet 10 has a buffering effect during air intake. High-pressure gas is output from the first air port 13, first enters the second buffer chamber 9, and then enters the power chamber 2 through the air inlet 10. Due to the sudden increase in cross-sectional area, the second buffer chamber 9 can reduce the pressure of the high-pressure gas to a certain extent, which is beneficial to reduce the acceleration of the piston head 22 and slow down the movement of the main shuttle within a suitable range. The second buffer chamber 9 also has the same effect as the first buffer chamber 7 for air release, which will not be elaborated further.

[0043] like Figure 3 , 4 As shown in Figure 5, the abutment step 6 extends along the axial direction of the docking blind hole 4 and has a crescent-shaped cross-section. The step surface of the abutment step 6 is perpendicular to the axial direction of the docking blind hole 4. The front side of the docking protrusion 5 is provided with an axially recessed buffer blind hole 17. The abutment step 6 covers the opening of the buffer blind hole 17, and a second buffer cavity 9 is formed between the buffer blind hole 17 and the abutment step 6. The first air port 13 is provided at the bottom of the buffer blind hole 17.

[0044] Specifically, the step surface of the abutment step 6 is parallel to the bottom surface of the docking blind hole 4, and its cross-section is crescent-shaped. From the radial section, the area of ​​the abutment step 6 occupies about half of the docking blind hole 4, ensuring a sufficiently large venting buffer space. Moreover, the cylindrical shape is easy to process. The opening of the buffer blind hole 17 is closed by the abutment step 6, and the first air port 13 and the air inlet 10 are located at both ends of the second buffer cavity 9. Furthermore, the inner end of the docking protrusion 5 is provided with a circumferentially extending and radially recessed sealing ring groove 28. A sealing ring is fitted inside the sealing ring groove 28, and the sealing ring is circumferentially sealed to the inner wall of the docking blind hole 4. A notch is also provided on the outer periphery of the front end of the docking protrusion 5.

[0045] In this embodiment, the power chamber 2 comprises two vertically distributed rows of power chambers 2, which are staggered. The upper row has four power chambers 2, and the lower row has five. The spacing between the power chambers 2 in each row is consistent, and the arrangement direction of the power chambers 2 is perpendicular to the axial direction of the power chambers 2. The venting channel 11 extends perpendicularly to the extending direction of the power chambers 2. One end of the venting channel 11 is connected to the outside atmosphere, and the venting channel 11 is connected to the vent hole 12 through a transition channel.

[0046] Specifically, multiple power chambers 2 are arranged in an array, which improves compactness and reduces the volume of the cylinder 1. Furthermore, the staggered arrangement of adjacent rows of power chambers 2 avoids the pins 20 of the solenoid valves 3 in adjacent rows being too close together. The extension direction of the venting channel 11 is adapted to the arrangement direction of a single row of power chambers 2, and each of the two rows of power chambers 2 is provided with a venting channel 11.

[0047] In this embodiment, the first air port 13 and the second air port 15 are connected by an air passage. A switching assembly is provided in the air passage, and the air passage between the first air port 13 and the switching assembly is connected to a high-pressure gas supply assembly. The rear end of the solenoid valve 3 is provided with a pin 20 connected to the switching assembly. The outer end of the pin 20 is connected to an integrated circuit board, and the integrated circuit board is electrically connected to a control terminal. A support plate 29 is detachably provided at the bottom of the cylinder body 1. The support plate 29 is located below the solenoid valve 3. The solenoid valve 3 includes two vertically distributed rows. The bottom of the lower row of solenoid valves 3 is supported by the support plate 29, and the bottom of the upper row of solenoid valves 3 is supported by the top of the lower row of solenoid valves 3.

[0048] Specifically, the first air port 13 and the second air port 15 are connected by an air passage. The switching assembly is located within the air passage, and the high-pressure gas supply assembly is connected to the side of the switching assembly near the first air port 13. When high-pressure gas is input into the power chamber 2, the switching assembly is in a closed state. When high-pressure gas is released from the power chamber 2, the switching assembly opens, and the released gas enters the first buffer chamber 7 through the air passage from the second air port 15. The solenoid valve 3 on the cylinder 1 is connected to the integrated circuit board via pin 20. The integrated circuit board has socket-type contacts corresponding to the positions of each bracket, which is common knowledge. The integrated circuit board is connected to the control terminal via a bus, improving the level of integration and avoiding the problem of messy wiring of each solenoid valve 3. Multiple rows of solenoid valves 3 are vertically stacked on the support plate 29, which can provide upward support force, avoiding the connection between the solenoid valve 3 and the cylinder 1 being only the insertion force of the mating protrusion 5 and the mating blind hole 4.

[0049] like Figure 3 As shown, a drive rod 21 is inserted at the front end of the power chamber 2. The drive rod 21 is connected to the piston head 22 inside the power chamber 2. The front end of the power chamber 2 is open, and a small-diameter end of a positioning ring 23 with a T-shaped cross-section is inserted into the opening. The positioning ring 23 has a vent hole 24 that runs through the thickness direction. A cover plate 25 is detachably fixed to the front side of the cylinder 1. The cover plate 25 has a positioning groove 26 and a drive rod through hole 27. The drive rod 21 passes through the positioning ring 23 and the drive rod through hole 27. The positioning groove 26 covers the positioning ring 23.

[0050] Specifically, the drive rod 21 is driven by the extension and retraction of the piston head 22. The drive rod 21 can transmit its movement to the corresponding main shuttle to drive the main shuttle. The front end of the power chamber 2 is provided with a positioning ring 23. The positioning groove 26 on the cover plate 25 corresponds to the position of the positioning ring 23. The cover plate 25 is fixed to the front side of the cylinder 1, pressing the positioning ring 23 into the open opening of the power chamber 2. The inner diameter of the positioning ring 23 is adapted to the outer diameter of the drive rod 21. The two are in clearance fit to ensure the stable sliding of the drive rod 21. The inner diameter of the drive rod through hole 27 is larger than the outer diameter of the drive rod 21 to ensure that the drive rod 21 can pass through smoothly. The vent hole 24 on the positioning ring 23 connects the cavity on the side of the piston head 22 away from the air inlet 10 with the outside, ensuring that the piston head 22 is pushed out by high-pressure gas.

[0051] Specific working principle: When it is necessary to control the extension of the corresponding drive rod 21, the switch assembly first closes the air passage, and the high-pressure gas supply assembly inputs high-pressure gas. This gas is output from the first air port 13, passes through the second buffer chamber 9 and the air inlet 10, and enters the power chamber 2. The pressure difference on both sides of the piston head 22 pushes the piston head 22 forward, and the drive rod 21 extends. During reset, the high-pressure gas supply assembly stops the gas input, the switch assembly opens, the air passage between the first air port 13 and the second air port 15 is connected, the reset structure retracts the drive rod 21, and the gas in the power chamber 2 is discharged in reverse from the air inlet 10, passing sequentially through the second buffer chamber 9, the first air port 13, the air passage, the second air port 15, the first buffer chamber 7, the vent 12, the transition channel, and the vent channel 11 to be discharged into the outside atmosphere.

[0052] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A main shuttle cylinder for a sock machine, comprising a cylinder body (1), wherein the cylinder body (1) is provided with at least one set of power chambers (2), and the cylinder body (1) is provided with solenoid valves (3) corresponding one-to-one with the power chambers (2), a docking blind hole (4) is provided on the rear side of the cylinder body (1), and a docking protrusion (5) is provided on the front side of the solenoid valves (3), wherein the docking protrusion (5) extends into the docking blind hole (4), characterized in that, The bottom of the docking blind hole (4) is provided with an abutting step (6), and a first buffer cavity (7) is formed between the abutting step (6) and the wall of the docking blind hole (4). A second buffer cavity (9) is provided between the abutting step (6) and the docking protrusion (5). An air inlet (10) communicating with the power cavity (2) is provided on the abutting step (6). An air vent (12) communicating with the air venting channel (11) is provided at the bottom of the first buffer cavity (7). A first air port (13) corresponding to the air inlet (10) and located in the second buffer cavity (9) and a second air port (15) corresponding to the air vent (12) are provided at the front end of the docking protrusion (5).

2. The main shuttle cylinder of the sock machine according to claim 1, characterized in that, The abutting step (6) extends along the axial direction of the docking blind hole (4) and has a crescent or semi-circular cross-section. The step surface of the abutting step (6) is perpendicular to the axial direction of the docking blind hole (4).

3. The main shuttle cylinder of the sock machine according to claim 1, characterized in that, The front side of the docking protrusion (5) is provided with an axially recessed buffer blind hole (17), the abutting step (6) covers the opening of the buffer blind hole (17), the buffer blind hole (17) and the abutting step (6) form the second buffer cavity (9), and the first air port (13) is provided at the bottom of the buffer blind hole (17).

4. The main shuttle cylinder of the sock machine according to claim 1, characterized in that, The power cavity (2) includes at least one row arranged vertically, with adjacent rows of power cavities (2) staggered, and the spacing between the power cavities (2) in each row is consistent. The arrangement direction of the power cavity (2) is perpendicular to the axial direction of the power cavity (2).

5. The main shuttle cylinder of the sock machine according to claim 4, characterized in that, The venting channel (11) extends perpendicularly to the extension direction of the power chamber (2). At least one end of the venting channel (11) is connected to the outside atmosphere. The venting channel (11) is connected to the venting hole (12) through a transition channel.

6. The main shuttle cylinder of the sock machine according to claim 1, characterized in that, The first air port (13) and the second air port (15) are connected by an air passage, and a switch assembly is provided in the air passage. The air passage between the first air port (13) and the switch assembly is connected to a high-pressure gas supply assembly.

7. The main shuttle cylinder of the sock machine according to claim 6, characterized in that, The solenoid valve (3) has a pin (20) at its rear end that is connected to the switch assembly. The outer end of the pin (20) is connected to an integrated circuit board, and the integrated circuit board is electrically connected to the control terminal.

8. The main shuttle cylinder of the sock machine according to claim 1, characterized in that, A drive rod (21) is inserted at the front end of the power chamber (2). The drive rod (21) is connected to the piston head (22) inside the power chamber (2). The front end of the power chamber (2) is open, and a small-diameter end of a positioning ring (23) with a T-shaped cross-section is inserted into the open opening. The positioning ring (23) is provided with a vent hole (24) that runs through the thickness direction. A cover plate (25) is detachably fixed on the front side of the cylinder (1). A positioning groove (26) and a drive rod through hole (27) are provided on the cover plate (25). The drive rod (21) passes through the positioning ring (23) and the drive rod through hole (27). The positioning groove (26) covers the positioning ring (23).

9. The main shuttle cylinder of the sock machine according to any one of claims 1-8, characterized in that, The inner end of the docking protrusion (5) is provided with a sealing ring groove (28) that extends circumferentially and is recessed radially. A sealing ring is fitted inside the sealing ring groove (28), and the sealing ring is circumferentially sealed to the inner wall of the docking blind hole (4).

10. The main shuttle cylinder of the sock machine according to any one of claims 1-8, characterized in that, The cylinder body (1) is detachably provided with a support plate (29) at the bottom. The support plate (29) is located below the solenoid valve (3). The solenoid valve (3) is arranged in multiple vertical rows. The bottom row of solenoid valves (3) is supported by the support plate (29), and the bottom of the non-bottom row of solenoid valves (3) is supported by the top of the adjacent solenoid valve (3) below.

Images