A linear guide type pneumatic slide and its use method

Abstract

The present application discloses a linear guide type pneumatic slide and its use method, which relates to the field of pneumatic slides, including: a cylinder, which is provided with a first air port and a second air port, a first valve is provided in the first air port, and a second valve is provided in the second air port; a piston, which is dynamically sealed and arranged in the cylinder, and divides the cylinder into a left chamber and a right chamber, the left chamber is connected to the first air port, and the right chamber is connected to the second air port; a first box body, which is arranged in the left chamber, and a first through hole is provided in the first box body, and the first through hole and the left chamber are connected to each other; a first blocking member, which is fixedly connected to the piston, and the first blocking member can block the first through hole. By adopting the above technical solution, the purpose of steadily starting the piston at the moment when gas is introduced into the cylinder can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of pneumatic slides, and in particular to a linear guide type pneumatic slide and a method of using the same. Background Art

[0002] Related art discloses a high-strength precision pneumatic slide with a buffer device, comprising: a housing, wherein a cavity is defined within the housing, a push plate dynamic seal is disposed within the housing cavity, one end of a straight rod is fixedly connected to the push plate, and the other end of the straight rod extends out of the housing. A limit mechanism is also included, wherein the limit mechanism utilizes a screw-nut pair mechanism, wherein the input end knob of the limit mechanism is disposed outside the housing, and the output end of the limit mechanism is disposed within the housing cavity, and the output end of the limit mechanism is fixedly connected to a limit block. The position of the limit block within the housing cavity is adjusted by adjusting the knob, and the push plate can abut against the limit block, thereby achieving the purpose of adjusting the straight rod stroke.

[0003] Because pneumatic slides have a short motion stroke and high operating precision, they are generally used in the field of intelligent robots. The main driving component of the pneumatic slide is a cylinder structure. During the startup of the cylinder, the piston plate inside the cylinder is prone to sudden thrust. If the cylinder stroke is large, the sudden thrust of the piston will not affect the subsequent output of the piston rod. However, since the stroke of the pneumatic slide is short, when the piston plate suddenly thrusts, the piston rod will come to an emergency stop. If a gripper is connected to the output end of the piston rod and the gripper is holding a workpiece at this time, the gripper's action is a sudden thrust plus an emergency stop. If the gripper's clamping force is insufficient at this time, the workpiece will fall. Therefore, there is an urgent need to solve the existing problem. Summary of the Invention

[0004] In order to solve the above technical problems, the present invention aims to provide a linear guide pneumatic slide and a method of using the same, so as to solve the technical problem of sudden surge of the piston rod of the pneumatic slide during startup.

[0005] First aspect

[0006] To achieve the above object, the present invention provides a linear guide type pneumatic slide, comprising:

[0007] The cylinder is provided with a first air port and a second air port, wherein the first air port is provided with a first valve, and the second air port is provided with a second valve;

[0008] A piston, a dynamic seal is disposed in the cylinder and divides the cylinder into a left chamber and a right chamber, wherein the left chamber is in communication with the first air port, and the right chamber is in communication with the second air port;

[0009] a first box body, disposed in the left chamber, wherein a first through hole is formed in the first box body, and the first through hole and the left chamber are in communication with each other;

[0010] A first blocking member is fixedly connected to the piston, and the first blocking member can block the first through hole.

[0011] By adopting the above technical solution, the piston can be smoothly activated the moment gas is introduced into the cylinder. When gas is introduced into the first gas port, the pressure in the left chamber increases, driving the piston to move and continuously compressing the right chamber. The first blocking member also moves continuously toward the right chamber as the piston moves. When the piston reaches its limit of travel, the first blocking member blocks the first housing. Because the first housing and the left chamber are interconnected, when the first blocking member blocks the first housing, the pressure in the first housing and the pressure in the left chamber are the same, both containing high-pressure gas. When gas is introduced into the second gas port, the piston continuously compresses the left chamber. At this point, the first blocking member also moves with the piston, opening the first through-hole of the first housing, allowing the high-pressure gas in the first through-hole to be released. This released high-pressure gas balances some of the high-pressure gas in the right chamber, thereby reducing the instantaneous driving force of the piston. Ultimately, the piston moves smoothly during activation, preventing sudden jerking during activation.

[0012] Optionally, the first blocking member includes:

[0013] A connecting rod, the connecting rod and the piston are fixedly connected;

[0014] A plunger is connected to the connecting rod, and the plunger can block the first through hole.

[0015] By adopting the above technical solution, the purpose of blocking the first box body can be achieved. The key to preventing the piston from suddenly rushing is the setting of the first blocking member. The first blocking member needs to ensure that when the piston runs to the farthest stroke, the first blocking member can just block the first through hole of the first box body. If the first blocking member blocks the first through hole before the piston moves to the farthest stroke, then at this time, due to the limiting effect of the first through hole in the first box body, the piston cannot continue to move forward, that is, the expected stroke requirement cannot be met. If the first blocking member blocks the first through hole after the piston moves to the farthest stroke, it is obvious that the first blocking member can no longer block the first through hole at this time, which will cause the piston to suddenly rush when it is started next time. In actual use, by determining the stroke of the piston and then designing the connection length of the connecting rod, it can be made that when the piston moves to the farthest stroke, the plunger can just block the first through hole of the first box body.

[0016] Optionally, the plunger is slidably disposed on the connecting rod, and the blocking member further includes a first elastic member, which is fixedly connected to the connecting rod and the plunger respectively.

[0017] By adopting the above technical solution, the purpose of enabling the plunger to block the first through-hole when the piston moves to its farthest stroke can be achieved. If the connecting rod and the plunger are fixedly connected, the length of the connecting rod needs to be precisely designed to ensure that the plunger can stably block the first through-hole of the first housing, and the design accuracy requirements for the connecting rod are also relatively high. If the length error of the connecting rod is relatively large, the plunger may not be able to block the first through-hole. In addition, even if the design length of the connecting rod can meet the expected standard, there will be certain limitations: since the stroke of a general pneumatic slide is adjustable, once the stroke of the pneumatic slide is adjusted, the plunger will also be unable to block the first through-hole, that is, the plunger has certain limitations. To solve this technical problem, the plunger is slidably set on the connecting rod, so that when the piston moves to its farthest stroke, the plunger has already blocked the first through-hole of the first housing, and the high-pressure gas is stored in the first housing in advance. As the piston continues to move, the connecting rod will also continue to move. However, due to the limiting effect of the first through hole, the plunger and the connecting rod move relative to each other, which will not affect the expected movement stroke of the piston. In order to ensure that the plunger can block the first through hole the same as the last time it blocked the first through hole. By setting the first elastic member, the plunger can maintain an unchanged relative position to the connecting rod when the plunger is pulled out. In terms of versatility, since the plunger has completed the blocking action of the first through hole before the piston moves to the farthest stroke, when adjusting the stroke of the pneumatic slide, as long as it can be ensured that the plunger of the pneumatic slide after the adjustment is completed can block the first through hole when the piston moves to the farthest stroke, it can be achieved to prevent the piston from bursting.

[0018] Optionally, the plunger adopts a conical design, and the plunger and the first through hole match each other.

[0019] By adopting the above technical solution, the purpose of the plunger being able to stably block the first through hole can be achieved. The key to preventing the piston from suddenly rushing is that the plunger can block the first through hole, and if the blocking effect of the plunger is not ideal. For example, during the blocking process of the plunger, the high-pressure gas in the first box body can still flow out from the gap between the plunger and the first box body. Then, the high-pressure gas in the first box body will continue to decay, and when the second gas port is filled with gas, the high-pressure gas will instantly drive the piston to move toward the left chamber. However, there is no high-pressure gas in the first box body to hinder the piston, so the piston will still suddenly rush. By adopting mutually compatible conical designs for the plunger and the first through hole, it is possible to effectively prevent the high-pressure gas stored in advance from leaking from the first box body.

[0020] Optionally, also include:

[0021] a second box body, the second box body being disposed in the right chamber, a second through hole being opened in the second box body, the second through hole being in communication with the right chamber;

[0022] A second blocking member is fixedly connected to the piston, and the second blocking member can block the second through hole.

[0023] By adopting the above technical solution, the purpose of preventing the piston from suddenly jumping during the continuous movement process can be achieved. Only the first box body and the first blocking member are provided, which can only ensure that the piston will not suddenly jump when moving to the left chamber. However, the piston will still suddenly jump when moving to the right chamber. By providing the second box body and the second blocking member, the piston will not suddenly jump when moving to the right chamber. On the other hand, when the piston starts to move to the right chamber, as the second blocking member opens the second through hole, the high-pressure gas stored in the second box body can hinder the movement of the piston. Since the first blocking member does not block the first box body, the first box body can now store a certain amount of high-pressure gas, that is, the first box body serves the purpose of unloading a part of the high-pressure gas.

[0024] Optionally, it further includes: a first driving member for driving the first box to directional reciprocating motion in the cylinder.

[0025] By adopting the above technical solution, the purpose of adjusting the stroke of the pneumatic slide can be achieved. During actual use, the pneumatic slide needs to adjust a specific stroke to a specific position to meet the needs of production and processing. In this pneumatic slide, the stroke of the piston is between the right side wall of the first housing and the right side wall of the inner cavity of the cylinder. By providing a first drive member to drive the movement of the first housing, the relative position of the first housing within the cylinder can be changed, thereby achieving the purpose of adjusting the stroke of the pneumatic slide.

[0026] Optionally, the first driving member includes:

[0027] a screw rod passing through the cylinder, the screw rod passing through the first housing, and being threadedly connected to the first housing;

[0028] A fixed plate is fixedly connected in the cylinder, and a sliding groove is provided in the fixed plate. A sliding block is fixedly connected to the first box body, and the sliding block is slidably arranged in the sliding groove.

[0029] By adopting the above technical solution, the purpose of adjusting the movement of the first housing can be achieved. A screw-nut pairing mechanism is formed between the screw, the first housing, and the fixed plate. When the screw is rotated, the first housing is driven to reciprocate in a directional manner. The screw-nut pairing mechanism is selected here instead of other adjustment mechanisms because, when using a pneumatic slide, to prevent the piston from suddenly moving, the plunger may slide relative to the connecting rod under the restraining action of the first through hole before the piston reaches its maximum stroke. In this case, the first housing is inevitably subjected to the tension of the connecting rod. As is well known, the torque output by the piston during movement is relatively large, that is, the tension exerted by the connecting rod connected to the piston on the first housing is also relatively large. Under the influence of this tension, the first housing will move relative to the first housing, and the stroke of the pneumatic slide will change. This situation is not allowed in actual use because the movement of the screw-nut pairing mechanism is irreversible. That is, the movement of the first housing can only be achieved by rotating the screw, and the rotation of the screw cannot be driven by pushing the first housing. Therefore, for pneumatic slide products, it is more appropriate to choose a screw-nut pair mechanism.

[0030] Optionally, the first driving member further includes a second elastic member, and the first box body is connected to the inner wall of the cylinder through the second elastic member.

[0031] By adopting the above technical solution, it is possible to prevent the screw from being twisted due to unexpected circumstances, thereby changing the stroke of the piston and ultimately affecting the use of the pneumatic slide. During the precision machining process, if a pneumatic slide is used to clamp the workpiece, the workpiece will cause the pneumatic slide to vibrate during the machining process. When the amplitude of the pneumatic slide is too strong, the screw will become loose, which will cause the first box to move to a certain extent, that is, the stroke of the pneumatic slide will change at this time. In order to solve this technical problem, a second elastic member is provided and the second elastic member is in a compressed state. When the pneumatic slide vibrates, the second elastic member gives the first box a certain pre-pressure, so that when the screw is twisted, more torque will be required than when there is no second elastic member, which can ultimately prevent the external force from driving the screw to rotate.

[0032] Second aspect

[0033] The present invention provides a method for using a linear guide type pneumatic slide, which utilizes the above-mentioned linear guide type pneumatic slide, including the following steps: first, opening a first valve and a second valve; then, introducing gas into a first through hole; then, closing the second valve; and finally, closing the first valve after an interval of 1 second.

[0034] By adopting the above technical solution, the goal of ensuring stable collection of high-pressure gas in the first chamber can be achieved. If the first valve and the second valve are closed simultaneously, the first chamber will not collect high-pressure gas or the pressure of the collected high-pressure gas will be lower than expected, thus failing to prevent piston surge. By closing the second valve after the first valve, the first chamber can be filled with stable high-pressure gas.

[0035] In summary, this application includes at least one of the following beneficial technical effects:

[0036] 1. By providing the first box body and the first blocking member, the piston can be started steadily at the moment the gas is introduced into the cylinder.

[0037] 2. By arranging the plunger, the connecting rod and the first elastic member, the plunger can block the first through hole when the piston moves to the farthest stroke.

[0038] 3. By adopting the screw-nut pair mechanism, the purpose of adjusting the stroke of the pneumatic slide can be achieved while the piston will not affect the stroke of the pneumatic slide in turn. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 This is a cross-sectional view of a linear guide pneumatic slide in the present application;

[0040] Figure 2 This is a first motion state diagram of a linear guide pneumatic slide in the present application;

[0041] Figure 3 This is a second motion state diagram of a linear guide pneumatic slide in the present application;

[0042] Figure 4 This is a third motion state diagram of a linear guide pneumatic slide in the present application.

[0043] In the picture:

[0044] 1. Cylinder; 11. First air port; 12. Second air port; 13. First valve; 14. Second valve; 15. Left chamber; 16. Right chamber; 2. Piston; 3. First housing; 31. First through hole; 32. Slider; 4. First blocking member; 41. Connecting rod; 42. Plunger; 43. First elastic member; 5. Second housing; 51. Second through hole; 6. Second blocking member; 7. First driving member; 71. Screw; 72. Fixing plate; 721. Slide; 73. Second elastic member; 8. Second driving member. DETAILED DESCRIPTION

[0045] The following is combined with Figures 1-4 , some embodiments of the present invention are described in detail.

[0046] In this embodiment, the first housing 3 and the second housing 5 have the same shape and structure, the first blocking member 4 and the second blocking member 6 have the same shape and structure, and the first driving member 7 and the second driving member 8 have the same shape and structure. To save space, in the subsequent description, only the first housing 3, the first blocking member 4, and the first driving member 7 are described in detail.

[0047] First aspect

[0048] See also Figure 1 As shown, the present invention provides a linear guide pneumatic slide, comprising: a cylinder 1, a piston 2, a first box 3, a first blocking member 4, a second box 5, a second blocking member 6, a first driving member 7 and a second driving member 8.

[0049] See also Figure 1 and Figure 2 As shown, a first air port 11 is provided on the left outer surface of the cylinder 1, and a first valve 13 is provided in the first air port 11. A second air port 12 is provided on the right outer surface of the cylinder 1, and a second valve 14 is provided in the second air port 12. The piston 2 is dynamically sealed and disposed within the cylinder 1, dividing the cylinder 1 into a left chamber 15 and a right chamber 16. The left chamber 15 is connected to the first air port 11, and the right chamber 16 is connected to the second air port 12. By ventilating the first air port 11, the piston 2 can be pushed to the right, and by ventilating the second air port 12, the piston 2 can be pushed to the left. In other words, by repeatedly switching the ventilation between the first air port 11 and the second air port 12, the reciprocating motion of the piston 2 within the cylinder 1 can be achieved.

[0050] Please continue reading Figure 1 As shown, the first drive member 7 is used to drive the first housing 3 to directional reciprocating motion within the cylinder 1, thereby adjusting the travel of the piston 2. The first drive member 7 comprises a screw 71, a fixing plate 72, and a second elastic member 73. One end of the screw 71 passes through the cylinder 1 and the first housing 3, respectively, and is threadedly connected to the first housing 3. To ensure relatively easy rotation of the screw 71, a bearing is fixedly mounted on the left inner surface of the cylinder 1, and a bearing is fixedly mounted on the right outer surface of the cylinder 1. The screw 71 is then divided into three consecutive sections: a left section, a middle section, and a right section. The left, middle, and right sections are coaxially arranged, with the outer diameters of the left and right sections being larger than those of the middle section, thereby forming a retaining groove in the screw 71. Passing the middle section through the cylinder 1 limits the position of the screw 71, allowing only rotational motion. Finally, the right section of the screw 71 is threaded and passes through the first housing 3, threadedly connected to the first housing 3.

[0051] Please combine Figure 2As shown, the fixing plate 72 is fixedly connected to the left chamber 15 of the cylinder 1. A slide groove 721 is formed on the fixing plate 72. The bottom of the first housing 3 is fixedly connected to the slider 32. The first housing 3 is placed between the two fixing plates 72 and the slider 32 is inserted into the slide groove 721, so that the first housing 3 can slide back and forth in a certain direction between the two fixing plates 72. It can be understood that with the above arrangement, a screw-nut pair mechanism is formed between the screw 71, the fixing plate 72 and the first housing 3. By rotating the screw 71, the first housing 3 can slide back and forth in a certain direction between the two fixing plates 72.

[0052] See again Figure 1 As shown, the cylinder 1 in this embodiment is used in the technical field of pneumatic slides, and during the precision machining and manufacturing process of the pneumatic slide, the piston 2 rod of the piston 2 is connected to the manipulator to clamp the workpiece. During the machining process of the workpiece, the pneumatic slide will vibrate, and when the amplitude of the pneumatic slide is too strong, the screw 71 will become loose. In this way, the first box body 3 will move to a certain extent, that is, the stroke of the piston 2 will change at this time. By providing a second elastic member 73, in this embodiment, the second elastic member 73 is selected as a compression spring, and the two ends of the compression spring are respectively connected to the inner wall of the left chamber 15 and the left side wall of the first box body 3, thereby effectively solving the problem of the screw 71 rotating due to unexpected circumstances and changing the stroke of the piston 2.

[0053] Please continue reading Figure 1 As shown, a first through hole 31 is provided on the right side of the first housing 3, and a first blocking member 4 is fixedly connected to the piston 2. The first blocking member 4 is used to block the first through hole 31. The first blocking member 4 includes a connecting rod 41, a plunger 42 and a first elastic member 43. The connecting rod 41 is composed of a vertical rod and a horizontal rod to form a T-shaped design. One end of the horizontal rod is fixedly connected to the piston 2, and the other end of the horizontal rod is fixedly connected to the vertical rod. The plunger 42 is mounted on the horizontal rod. It can be understood that the plunger 42 can slide relative to the horizontal rod. The first elastic member 43 is a spring, one end of the spring is fixedly connected to the vertical rod, and the other end of the spring is fixedly connected to the horizontal rod. In order to prevent the stroke of the connecting rod 41 from being restricted by the screw 71, the connecting rod 41 and the screw 71 are staggered front to back. Finally, in order to enable the plunger 42 to better block the first through hole 31, in this embodiment, the plunger 42 and the first through hole 31 are designed to be compatible with each other.

[0054] Please continue reading Figure 1As shown, it can be understood that the first box body 3 and the first blocking member 4 are both arranged in the left chamber 15 of the cylinder 1, while the second box body 5 and the second blocking member 6 are both arranged in the right chamber 16 of the cylinder 1. If the left inner wall of the first box body 3 and the left chamber 15 abut against each other, and the right inner wall of the second box body 5 and the right chamber 16 abut against each other, the structure and position of the first blocking member 4 and the second blocking member 6 are symmetrical about the piston 2. The first driving member 7 is arranged on the left side of the cylinder 1, and the second driving member 8 is arranged on the right side of the cylinder 1, and the shape and structure of the two are exactly the same. By starting the first driving member 7 or the second driving member 8 to adjust the corresponding first box body 3 or second box body 5, the stroke adjustment of the pneumatic slide can be completed.

[0055] The working mode of the present invention is described below:

[0056] See also Figure 2 As shown, when gas is introduced into the first gas port 11, the pressure in the left chamber 15 will increase, thereby pushing the piston 2 to move to the right and continuously compressing the right chamber 16. At the moment when the piston 2 is not in contact with the first box body 3, the first through hole 31 of the first box body 3 opens, thereby allowing the high-pressure gas introduced from the first gas port 11 to flow into the first box body 3. At this time, the first box body 3 plays a role in pressure relief, thereby preventing the piston 2 from suddenly rushing at the moment of starting. When the piston 2 continues to move a certain distance to the right, the plunger 42 in the second box body 5 will open the second through hole 51 of the second box body 5. At this time, the high-pressure gas in the second box body 5 will flow out from the second through hole 51, thereby providing some resistance to the piston 2 during its movement to the right, thereby preventing the piston 2 from suddenly rushing again.

[0057] By buffering the piston 2 twice, the piston 2 will not suddenly rush when starting, that is, the piston 2 starts more stably. Figure 3 As shown, as the piston 2 continues to move to the right, the spring in the first box 3 and the spring in the second box 5 are both in a free state. Figure 4 As shown, when the piston 2 continues to move to the right, the plunger 42 in the first box body 3 will abut against the through hole of the first box body 3. When the plunger 42 abuts against the first box body 3, since the first through hole 31 and the left chamber 15 are connected to each other, and high-pressure gas is still continuously introduced into the left chamber 15, the first box body 3 can be filled with high-pressure gas when the plunger 42 blocks the first box body 3.

[0058] As the piston 2 continues to move to the right, at this time, the plunger 42 in the first box body 3 causes relative movement between the connecting rod 41 and the plunger 42 due to the limiting effect of the first through hole 31. The connecting rod 41 continues to move to the right, thereby continuously compressing the spring. The compressed spring further strengthens the sealing of the first box body 3 to prevent the high-pressure gas in the first box body 3 from leaking.

[0059] The piston 2 continues to move to the right until it abuts the second housing 5, at which point the piston 2 has completed its maximum travel. When gas is introduced into the second air port 12, the piston 2 continuously compresses the left chamber 15. At this point, when the piston 2 is activated, it also experiences pressure relief from the second housing 5 and the release of high-pressure gas from the first housing 3, thereby alleviating the risk of the piston 2 suddenly surging when it is activated to the left. Repeating the above process effectively prevents the piston 2 from suddenly surging during continuous use of the pneumatic slide.

[0060] Second aspect

[0061] The present application provides a method for using a linear guide type pneumatic slide, which utilizes the above-mentioned linear guide type pneumatic slide, including the following steps:

[0062] First, open the first valve 13 and the second valve 14; then, introduce gas into the first through hole 31; then, close the second valve 14; finally, after an interval of 1 second, close the first valve 13.

[0063] The working mode of the present invention is described below:

[0064] If the first valve 13 and the second valve 14 are closed simultaneously, the first tank 3 will not collect high-pressure gas or the pressure of the collected high-pressure gas will be lower than expected, thus failing to prevent the piston 2 from violently charging. By closing the second valve 14 later than the first valve 13, the first tank 3 can be filled with stable high-pressure gas.

[0065] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A linear guide pneumatic slide, characterized in that: include: A cylinder (1) is provided with a first air port (11) and a second air port (12), wherein a first valve (13) is provided in the first air port (11) and a second valve (14) is provided in the second air port (12); a piston (2) is dynamically sealed and arranged in the cylinder (1) and divides the cylinder (1) into a left chamber (15) and a right chamber (16), wherein the left chamber (15) is communicated with the first air port (11) and the right chamber (16) is communicated with the second air port (12); a first box (3) is arranged in the left chamber (15), wherein a first through hole (31) is provided in the first box (3), and the first through hole (31) and the left chamber (15) are communicated with each other; a first blocking member (4) is fixedly connected to the piston (2), and the first blocking member (4) is capable of blocking the first through hole (31).

2. A linear guide type pneumatic slide according to claim 1, characterized in that: The first blocking member (4) comprises: a connecting rod (41), the connecting rod (41) being fixedly connected to the piston (2); and a plunger (42), being interconnected with the connecting rod (41), the plunger (42) being capable of blocking the first through hole (31).

3. The linear guide type pneumatic slide according to claim 2, characterized in that: The plunger (42) is slidably arranged on the connecting rod (41), and the blocking member further comprises a first elastic member (43), wherein the first elastic member (43) is fixedly connected to the connecting rod (41) and the plunger (42), respectively.

4. A linear guide type pneumatic slide according to claim 2 or 3, characterized in that: The plunger (42) adopts a conical design, and the plunger (42) and the first through hole (31) match each other.

5. The linear guide type pneumatic slide according to claim 1, characterized in that: Also includes: a second box body (5), the second box body (5) being arranged in the right chamber (16), a second through hole (51) being provided in the second box body (5), the second through hole (51) and the right chamber (16) being communicated with each other; a second blocking member (6), the second blocking member (6) being fixedly connected to the piston (2), the second blocking member (6) being capable of blocking the second through hole (51).

6. The linear guide type pneumatic slide according to claim 3, characterized in that: Also includes: The first driving member (7) is used to drive the first box (3) to perform directional reciprocating motion in the cylinder (1).

7. The linear guide type pneumatic slide according to claim 6, characterized in that: The first driving member (7) includes: a screw (71) passing through the cylinder (1), the screw (71) passing through the first box (3) and being threadedly connected to the first box (3); a fixed plate (72) fixedly connected in the cylinder (1), the fixed plate (72) being provided with a slide groove (721), a slider (32) being fixedly connected to the first box (3), and the slider (32) being slidably arranged in the slide groove (721).

8. The linear guide type pneumatic slide according to claim 7, characterized in that: The first driving member (7) further includes a second elastic member (73), and the first box (3) is connected to the inner wall of the cylinder (1) via the second elastic member (73).

9. A method for using a linear guide pneumatic slide, characterized in that: The linear guide type pneumatic slide as claimed in claim 1 comprises the following steps: first, opening the first valve (13) and the second valve (14); then, introducing gas into the first through hole (31); then, closing the second valve (14); and finally, closing the first valve (13) after an interval of 1 second.

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