90° rotating link mechanism ram

Abstract

The present application relates to the technical field of oil cylinder, and discloses a 90-degree rotary connecting rod mechanism oil cylinder, which comprises a cylinder body, a cavity and a driving chamber are arranged in the cylinder body, the cavity and the driving chamber are communicated through a communication hole, a piston rod is arranged in the cavity, the other end of the piston rod is movably penetrated through the communication hole into the driving chamber and is provided with a guide piece, the cavity is rectangular, and a piston piece is arranged in the cavity, a slot is formed in the middle of the piston piece, and a first sealing piece and a second sealing piece are arranged in the slot respectively. The first sealing piece and the second sealing piece are in contact with the inner wall of the cavity, so that the phenomenon that the piston piece cannot be sealed with the cavity due to wear of the first sealing piece and the second sealing piece is avoided, the replacement frequency of the first sealing piece and the second sealing piece is reduced, the service life of the first sealing piece and the second sealing piece is prolonged, and the sealing effect of the oil cylinder during use is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil cylinder, in particular to a 90° rotary connecting rod mechanism oil cylinder. BACKGROUND

[0002] The 90° rotary mechanism oil cylinder is used for the "nesting" part of the aluminum die-casting mold, i.e. the cavity and the core, and clamps by rotating the rod of the oil cylinder by 90°. The traditional product uses a "rack and pinion structure" to realize 90° rotation, but has the following problems:

[0003] 1. The traditional "rack and pinion structure" uses involute gears, so it is difficult to realize high power transmission. (Increasing the modulus of the gear is easy to cause the volume to increase). Due to operator operation errors and other reasons, involute gears may not be able to withstand unexpected loads, resulting in gear damage.

[0004] 2. The traditional "rack and pinion structure" uses involute gears, and has backlash phenomenon, low responsiveness and low stopping accuracy.

[0005] 3. With the miniaturization of the mold, the installation space of the 90° rotary mechanism oil cylinder becomes narrow, and its volume cannot meet the current miniaturization demand.

[0006] 4. The traditional "rack and pinion structure" uses involute gears, and needs to perform a "gear cutting" process, which prolongs the production delivery cycle. In addition, the gear cutting process also increases the cost.

[0007] 5. The traditional piston seal is a whole structure, and once worn, it cannot completely play a sealing effect.

[0008] 6. The traditional shaft sleeve and drive shaft will wear out quickly due to temperature rise after long-term use, thereby shortening the service life of the oil cylinder components. Therefore, a new technical solution is needed to solve it. SUMMARY

[0009] The purpose of the present application is to solve the problems existing in the prior art, and a 90° rotary connecting rod mechanism oil cylinder is proposed.

[0010] In order to achieve the above object, the present application provides the following technical scheme: 90° rotating connecting rod mechanism oil cylinder, including cylinder, the cavity and drive chamber are set in the cylinder, the cavity and drive chamber are communicated through the communication hole, the inside of the cavity is provided with a piston rod, the other end of the piston rod is movably penetrated through the communication hole to the drive chamber, and a guide piece is installed, the cavity is rectangular, and a piston piece is installed inside, the middle of the piston piece is provided with a slot, the inside of the slot is respectively provided with a first sealing piece and a second sealing piece, the first sealing piece is connected with a spring piece through two groups of limiting holes, one side of one group of the limiting holes is communicated and provided with a limiting track groove, the second sealing piece is provided with two groups of limiting columns corresponding to the limiting holes, and the two sides of the second sealing piece are fixedly provided with clamping blocks;

[0011] The drive chamber is provided with a shaft sleeve, the drive shaft is rotatably installed in the shaft sleeve, the arc-shaped groove is matched with the shaft sleeve, a guide groove is formed in one side of the inner wall of the drive chamber, one end of the guide piece is movably arranged in the guide groove and matched with the guide groove, and the guide piece is in the shape of L, and an arc-shaped groove is arranged at the inner corner of the guide piece;

[0012] The connecting end of the guide piece and the guide groove is provided with a piston, a flow channel communicated with the drive chamber is formed in one side of the guide groove, a metal heat absorbing plate is fixedly connected in the flow channel, the other end of the metal heat absorbing plate extends to the outside of the flow channel and is connected with a heat dissipation fin through silica gel, the periphery of the heat dissipation fin is connected with a heat dissipation fan blade through a mounting frame, the other end of the heat dissipation fan blade is connected with a second bevel gear through a first bevel gear, the other end of the second bevel gear is connected with a third bevel gear through a driving shaft, the other end of the third bevel gear is provided with a fourth bevel gear, and the outside of the driving shaft is provided with a bearing seat.

[0013] As a preferred embodiment of the present application, oil inlet and outlet are formed in the two sides of the cavity, and the other side of the oil inlet and outlet extends to the outside of the cylinder.

[0014] As a preferred embodiment of the present application, the cylinder is designed in the form of a plate.

[0015] As a preferred embodiment of the present application, the outer diameter of the piston is consistent with the inner diameter of the guide groove, and the piston is in sliding connection with the inner wall thereof, and one end of the piston is fixedly connected with the connecting end of the guide groove.

[0016] As a preferred embodiment of the present application, a connecting rod is rotatably installed on the guide piece through a rotating shaft, a driving shaft is installed on the other end of the connecting rod through a rotating shaft, the driving shaft is rotatably connected with the cylinder, and the other end of the driving shaft extends to the outside of the cylinder.

[0017] As a preferred embodiment of the present application, one end of the piston rod is fixedly connected to one end of the guide, the other end of the piston rod is fixedly connected to one end of the piston piece, and the piston piece is slidably connected to the inner wall of the chamber through the first and second sealing pieces.

[0018] As a preferred embodiment of the present application, the first and second sealing pieces are sized to match the size of the slotted opening and are slidably connected to the inner wall thereof, the spring piece is movably connected inside the limiting hole, the limiting column has an outer diameter sized to match the inner diameter of the limiting hole and is slidably connected to the inner wall thereof, one end of the limiting column is fixedly connected to the end face of the second sealing piece, the other end of the limiting column abuts one end of the spring piece, and the length of the clamping block is 1 / 3 of the length of the limiting rail slot and is slidably connected to the inside thereof.

[0019] As a preferred embodiment of the present application, the mounting bracket is fixedly connected to the inner wall of the cylinder body, both ends of the heat dissipation fins are fixedly connected to the mounting bracket, one end of the heat dissipation fan is rotatably connected to the inside of the mounting bracket through a bearing and extends to the outside of the mounting bracket and is fixedly connected to one end of the first bevel gear.

[0020] As a preferred embodiment of the present application, one end of the second bevel gear is engaged with the other end of the first bevel gear, the other end of the second bevel gear is fixedly connected to one end of the driven shaft, the other end of the driven shaft is fixedly connected to one end of the third bevel gear, the other end of the third bevel gear is engaged with one end of the fourth bevel gear, and the other end of the fourth bevel gear is fixedly connected to the center of the driving shaft.

[0021] As a preferred embodiment of the present application, the outer portion of the bearing seat is fixedly connected to the inner wall of the cylinder body, and the inner ring of the bearing seat is fixedly connected to the outer surface of the driven shaft.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1. The present application uses a connecting rod design as a power transmission component. Since the connecting rod mechanism has a simple structure, it realizes high power transmission and high strength. Compared with the traditional rack and pinion structure, the connecting rod mechanism is more easily miniaturized, and since the connecting rod mechanism does not require a tooth cutting process, it realizes shortened production delivery cycle and reduced cost.

[0024] 2、The first sealing piece and the second sealing piece on the piston piece will slide in the inner wall of the cavity during the movement of the piston rod when the oil cylinder is in use. The first sealing piece and the second sealing piece will be worn out after a long time of use. At this time, the spring piece will generate a rebound force on the limiting column, so that part of the limiting column moves out of the inside of the limiting hole, and the clamping block will slide in the limiting rail groove, so that the first sealing piece and the second sealing piece contact the inner wall of the cavity, thereby avoiding the phenomenon that the first sealing piece and the second sealing piece cannot seal the piston piece and the cavity due to wear, reducing the replacement frequency of the first sealing piece and the second sealing piece, extending the service life of the first sealing piece and the second sealing piece, and improving the sealing effect of the oil cylinder in use.

[0025] 3、When the driving shaft of the oil cylinder rotates, the movement of the piston piece is realized by injecting oil through the two oil inlets and outlets, the linear movement of the guide piece is realized, and the rotation of the driving shaft is realized by the connecting rod. When the guide piece moves downward in the guide groove through the piston, the cooling liquid in the guide groove will be transported into the driving chamber through the flow channel. At this time, the cooling liquid will absorb the heat of the shaft sleeve and the driving shaft. When the piston moves upward in the guide groove, the cooling liquid in the driving chamber will be sucked back into the guide groove through the flow channel. In this process, the fourth bevel gear will rotate with the driving shaft. At this time, the fourth bevel gear will drive the driving shaft to rotate in the bearing seat through the third bevel gear. Then the other end of the driving shaft drives the first bevel gear to rotate through the second bevel gear, and then the first bevel gear drives the heat dissipation fan blade to rotate, so as to dissipate heat from the heat sink. In this process, the heat sink absorbs the heat of the cooling liquid in the flow channel, thereby preventing the shaft sleeve and the driving shaft from being damaged too quickly due to excessive temperature, improving the wear resistance between the driving shaft and the shaft sleeve, and further extending the service life of the oil cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0026] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments, made with reference to the following drawings:

[0027] Figure 1 The front view of the 90° rotary link mechanism oil cylinder proposed by the application;

[0028] Figure 2 The side view of the 90° rotary link mechanism oil cylinder proposed by the application;

[0029] Figure 3 The movement state diagram of the 90° rotary link mechanism oil cylinder proposed by the application;

[0030] Figure 4 The piston rod structure diagram of the 90° rotary link mechanism oil cylinder proposed by the application;

[0031] Figure 5 The first seal and the second seal of the 90° rotating connecting rod mechanism oil cylinder according to the present application are shown in the expanded view;

[0032] Figure 6 The first seal and the second seal of the 90° rotating connecting rod mechanism oil cylinder according to the present application are shown in the plan view;

[0033] Figure 7 The flow channel of the 90° rotating connecting rod mechanism oil cylinder according to the present application is shown in the enlarged view.

[0034] In the figure: 1, cylinder body; 2, chamber; 3, driving chamber; 4, communication hole; 5, oil inlet and outlet; 6, piston rod; 7, guide; 8, connecting rod; 9, driving shaft; 10, shaft sleeve; 11, guide groove; 12, arc-shaped groove; 13, piston; 14, slotted; 15, first seal; 16, second seal; 17, limiting hole; 18, spring; 19, limiting rail groove;

[0035] 20, limiting column; 21, clamping block; 22, piston; 23, flow channel; 24, metal heat absorption plate; 25, heat dissipation fin; 26, mounting frame; 27, heat dissipation fan blade; 28, first bevel gear; 29, second bevel gear;

[0036] 30, driving shaft; 31, third bevel gear; 32, fourth bevel gear; 33, bearing seat. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0038] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0039] Embodiment 1: 90° rotating connecting rod mechanism oil cylinder, see Figures 1 to 7, including cylinder 1, the cavity 2 and drive chamber 3 are arranged in the cavity 2 and drive chamber 3, the cavity 2 and drive chamber 3 are communicated through the communication hole 4, the oil inlet and outlet 5 are arranged on both sides of the cavity 2, the other side of the oil inlet and outlet 5 extends to the outside of the cylinder 1, the piston rod 6 is arranged in the cavity 2, the other end of the piston rod 6 is movably penetrated through the communication hole 4 to the drive chamber 3, and the guide 7 is installed, the connecting rod 8 is rotatably installed on the guide 7 through the rotating shaft, the other end of the connecting rod 8 is rotatably installed with the drive shaft 9 through the rotating shaft, the drive shaft 9 is rotatably connected with the cylinder 1, and the one end of the drive shaft 9 extends to the outside of the cylinder 1.

[0040] When the device is used, the movement of the piston 13 is realized by injecting oil through the two oil inlets and outlets 5, the linear movement of the guide 7 is realized, the rotation of the drive shaft 9 is realized by the connecting rod 8, and compared with the prior art, the oil cylinder adopts the connecting rod 8 as a power transmission component, the connecting rod 8 mechanism is simple in structure, high power transmission and high strength are realized, compared with the traditional rack and pinion structure, the connecting rod 8 mechanism is more easily miniaturized, and because the connecting rod 8 mechanism does not need a tooth cutting process, the production delivery cycle is shortened and the cost is reduced.

[0041] In the embodiment, the guide groove 11 is arranged on one side of the inner wall of the drive chamber 3, one end of the guide 7 is movably arranged in the guide groove 11, and is matched with the guide groove 11, through the design of the guide groove 11 structure, the oil cylinder does not need to consider the problem of backlash phenomenon due to the use of involute gear in the traditional "rack and pinion structure", the linear guide structure can effectively improve the responsiveness and stopping precision.

[0042] In the embodiment, the guide 7 is L-shaped as a whole, the inner corner position of the guide 7 is provided with an arc-shaped groove 12, the shaft sleeve 10 is installed in the drive chamber 3, the drive shaft 9 is rotatably installed in the shaft sleeve 10, the arc-shaped groove 12 is matched with the shaft sleeve 10, and the arc-shaped groove 12 is designed to adapt to the movement of the guide 7 to the shaft sleeve 10, which is beneficial to further simplify the space.

[0043] In the embodiment, the cylinder 1 is designed as a plate as a whole.

[0044] In this embodiment, the chamber 2 is rectangular, and the piston 13 is installed inside. The middle of the piston 13 is provided with a slot 14, and the inside of the slot 14 is respectively provided with a first sealing piece 15 and a second sealing piece 16. The first sealing piece 15 is connected with a spring 18 through two groups of limiting holes 17. One side of one group of limiting holes 17 is communicated with a limiting track groove 19. The second sealing piece 16 is provided with two groups of limiting columns 20 corresponding to the limiting holes 17. The two sides of the second sealing piece 16 are fixedly provided with clamping blocks 21. One end of the piston rod 6 is fixedly connected with one end of the guide 7. The other end of the piston rod 6 is fixedly connected with one end of the piston 13. The piston 13 is slidably connected with the inner wall of the chamber 2 through the first sealing piece 15 and the second sealing piece 16. The size of the first sealing piece 15 and the second sealing piece 16 is consistent with the size of the slot 14, and they are slidably connected with the inner wall. The spring 18 is movably connected in the limiting hole 17. The outer diameter of the limiting column 20 is consistent with the inner diameter of the limiting hole 17, and they are slidably connected with the inner wall. One end of the limiting column 20 is fixedly connected with the end face of the second sealing piece 16. The other end of the limiting column 20 abuts against one end of the spring 18. The length of the clamping block 21 is 1 / 3 of the limiting track groove 19, and they are slidably connected.

[0045] In use, the piston rod 6 drives the piston 13 to move in the chamber 2. In this process, the first sealing piece 15 and the second sealing piece 16 on the piston 13 slide on the inner wall of the chamber 2. After a long time of use, the first sealing piece 15 and the second sealing piece 16 will be worn. At this time, the spring 18 and the limiting column 20 generate a rebound force, so that part of the limiting column 20 moves out of the inside of the limiting hole 17. At the same time, the clamping block 21 slides in the limiting track groove 19, so that the first sealing piece 15 and the second sealing piece 16 contact the inner wall of the chamber 2, thereby avoiding the phenomenon that the first sealing piece 15 and the second sealing piece 16 cannot seal the piston 13 and the chamber 2 due to wear. The replacement frequency of the first sealing piece 15 and the second sealing piece 16 is reduced, the service life of the first sealing piece 15 and the second sealing piece 16 is extended, and the sealing effect of the oil cylinder in use is improved.

[0046] The connecting end of the guide piece 7 and the guide groove 11 is provided with a piston 22, one side of the guide groove 11 is provided with a flow channel 23 communicated with the driving chamber 3, the inside of the flow channel 23 is fixedly connected with a metal heat absorbing plate 24, the other end of the metal heat absorbing plate 24 extends to the outside of the flow channel 23 and is connected with a heat dissipation fin 25 through silica gel, the periphery of the heat dissipation fin 25 is connected with a heat dissipation fan blade 27 through a mounting frame 26, the other end of the heat dissipation fan blade 27 is connected with a second bevel gear 29 through a first bevel gear 28, the other end of the second bevel gear 29 is connected with a third bevel gear 31 through a driving shaft 30, the other end of the third bevel gear 31 is provided with a fourth bevel gear 32, the outside of the driving shaft 30 is provided with a bearing seat 33, the outer diameter of the piston 22 is consistent with the inner diameter of the guide groove 11 and is in sliding connection with the inner wall thereof, one end of the piston 22 is fixedly connected with the connecting end of the guide groove 11 of the guide piece 7, the mounting frame 26 is fixedly connected with the inner wall of the cylinder body 1, both ends of the heat dissipation fin 25 are fixedly connected with the mounting frame 26, one end of the heat dissipation fan blade 27 is rotatably connected with the inside of the mounting frame 26 through a bearing and extends to the outside of the mounting frame 26 and is fixedly connected with one end of the first bevel gear 28, one end of the second bevel gear 29 is engaged with the other end of the first bevel gear 28, the other end of the second bevel gear 29 is fixedly connected with one end of the driving shaft 30, the other end of the driving shaft 30 is fixedly connected with one end of the third bevel gear 31, the other end of the third bevel gear 31 is engaged with one end of the fourth bevel gear 32, the other end of the fourth bevel gear 32 is fixedly connected with the center of the driving shaft 9, the outside of the bearing seat 33 is fixedly connected with the inner wall of the cylinder body 1, the inner ring of the bearing seat 33 is fixedly connected with the outer surface of the driving shaft 30.

[0047] When the device is in use, when the driving shaft 9 of the oil cylinder rotates, the movement of the piston 13 is realized by injecting oil through the two oil inlets and outlets 5, the linear movement of the guide 7 is realized, and the rotation of the driving shaft 9 is realized by the connecting rod 8; when the guide 7 moves downward in the guide groove 11 through the piston 22, the cooling liquid in the guide groove 11 is transported into the driving chamber 3 through the flow channel 23, at this time, the cooling liquid can absorb the heat of the shaft sleeve 10 and the driving shaft 9; when the piston 22 moves upward in the guide groove 11, the cooling liquid in the driving chamber 3 is extracted back into the guide groove 11 through the flow channel 23; in this process, the fourth bevel gear 32 rotates with the driving shaft 9, at this time, the fourth bevel gear 32 drives the driving shaft 30 to rotate in the bearing seat 33 through the third bevel gear 31, then the other end of the driving shaft 30 drives the first bevel gear 28 to rotate through the second bevel gear 29, and then the first bevel gear 28 drives the heat dissipation fan blade 27 to rotate, so as to dissipate heat of the heat dissipation fin 25; in this process, the heat dissipation fin 25 absorbs the heat of the cooling liquid in the flow channel 23, thereby preventing the temperature between the shaft sleeve 10 and the driving shaft 9 from being too high to cause the damage of the shaft sleeve 10 and the driving shaft 9, improving the wear resistance between the driving shaft 9 and the shaft sleeve 10, and further prolonging the service life of the oil cylinder.

[0048] It should be noted that the guide groove 11 is filled with cooling liquid, and the surface of the cylinder body 1 below the heat dissipation fan blade 27 is provided with a heat dissipation window (as shown in Figure 1 and Figure 3 ), when the heat dissipation fan blade 27 rotates clockwise or counterclockwise, the heat dissipation fan blade 27 can blow air to the heat dissipation fin 25 or suck air to the right side of the heat dissipation fan blade 27, the heat dissipation fin 25 adopts fin heat dissipation, no matter from which direction, finally the hot air flow can be discharged from the heat dissipation window, and the heat dissipation fan blade 27 can also adopt side suction type, which depends on the shape of the heat dissipation fan blade 27, and in the cylinder body 1, the position where the heat dissipation fan blade 27 is installed also has a cavity (as shown in Figure 1 and Figure 3 ), and the heat dissipation window extends from the surface of the cylinder body 1 to the cavity;

[0049] The electrical elements in the application are all controlled by controllers.

[0050] The above shows and describes the basic principles and main features of the application and the advantages of the application, and it is obvious for those skilled in the art that the application is not limited to the details of the above exemplary embodiments, and the application can be realized in other specific forms without departing from the spirit or essential characteristics of the application. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the application. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0051] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment exhibits every characteristic or exhibits the described implementation to the full extent. The specification can describe a number of implementations, and embodiments can include one, several or all of the described implementations. Any implementation of the described technology can not include every feature described in connection with other implementations. The specification is intended to cover any and all modifications and equivalents of the implementations provided for in place of, or in addition to, those described.

Claims

1. A 90° rotating link cylinder comprising a cylinder body (1), characterized in that: The cylinder (1) is internally provided with a chamber (2) and a driving chamber (3), the chamber (2) and the driving chamber (3) are communicated through a communication hole (4), the chamber (2) is internally provided with a piston rod (6), the other end of the piston rod (6) is movably penetrated through the communication hole (4) into the driving chamber (3) and is provided with a guide piece (7); The guide piece (7) is rotatably provided with a connecting rod (8) through a rotating shaft, the other end of the connecting rod (8) is rotatably provided with a driving shaft (9) through a rotating shaft, the driving shaft (9) is rotatably connected with the cylinder (1) and one end thereof extends out of the cylinder (1). The driving chamber (3) is internally provided with a shaft sleeve (10), the driving shaft (9) is rotatably arranged in the shaft sleeve (10), an arc-shaped groove (12) is matched with the shaft sleeve (10), one side of the inner wall of the driving chamber (3) is provided with a guide groove (11), one end of the guide piece (7) is movably arranged in the guide groove (11) and is matched with the guide groove (11), the guide piece (7) is in the shape of L and an arc-shaped groove (12) is arranged at the inner corner position thereof. The connecting end of the guide piece (7) and the guide groove (11) is provided with a piston (22), one side of the guide groove (11) is provided with a flow channel (23) communicated with the driving chamber (3), the inner part of the flow channel (23) is fixedly connected with a metal heat absorbing plate (24), the other end of the metal heat absorbing plate (24) extends out of the flow channel (23) and is connected with a heat dissipation fin (25) through silica gel, the periphery of the heat dissipation fin (25) is connected with a heat dissipation fan blade (27) through a mounting frame (26), the other end of the heat dissipation fan blade (27) is connected with a second bevel gear (29) through a first bevel gear (28), the other end of the second bevel gear (29) is connected with a third bevel gear (31) through a driving shaft (30), the other end of the third bevel gear (31) is provided with a fourth bevel gear (32), the outer part of the driving shaft (30) is provided with a bearing seat (33).

2. The 90° rotating link cylinder of claim 1, wherein: Both sides of the chamber (2) are provided with oil inlet and outlet (5), the other side of the oil inlet and outlet (5) extends out of the cylinder (1).

3. The 90° rotating link cylinder of claim 1, wherein: The cylinder (1) is in the shape of a plate.

4. The 90° rotating link cylinder of claim 1, wherein: The outer diameter of the piston (22) is matched with the inner diameter of the guide groove (11) and is in sliding connection with the inner wall thereof, one end of the piston (22) is fixedly connected with the connecting end of the guide piece (7) and the guide groove (11).

5. The 90° rotating link cylinder of claim 1, wherein: One end of the piston rod (6) is fixedly connected with one end of the guide piece (7), the other end of the piston rod (6) is fixedly connected with one end of a piston piece (13), the piston piece (13) is in sliding connection with the inner wall of the chamber (2) through a first sealing piece (15) and a second sealing piece (16).

6. The 90° rotating link mechanism ram of claim 1, wherein: The chamber (2) is rectangular, and a piston piece (13) is installed inside, a slot (14) is formed in the middle of the piston piece (13), a first sealing piece (15) and a second sealing piece (16) are respectively installed in the slot (14), the first sealing piece (15) is connected with a spring piece (18) through two groups of limiting holes (17), one side of one group of the limiting holes (17) is communicated and a limiting track groove (19) is formed, the second sealing piece (16) is installed with two groups of limiting columns (20) corresponding to the limiting holes (17), clamping blocks (21) are fixedly installed on both sides of the second sealing piece (16), the sizes of the first sealing piece (15) and the second sealing piece (16) are consistent with the size of the slot (14), and the first sealing piece (15) and the second sealing piece (16) are in sliding connection with the inner wall of the slot (14), the spring piece (18) is movably connected in the limiting hole (17), the outer diameter of the limiting column (20) is consistent with the inner diameter of the limiting hole (17), and the limiting column (20) is in sliding connection with the inner wall of the limiting hole (17), one end of the limiting column (20) is fixedly connected to the end face of the second sealing piece (16), the other end of the limiting column (20) abuts one end of the spring piece (18), the length of the clamping block (21) is 1 / 3 of the limiting track groove (19), and the clamping block (21) is in sliding connection with the inside of the limiting track groove (19).

7. The 90° rotating link cylinder of claim 1, wherein: The mounting frame (26) is fixedly connected to the inner wall of the cylinder body (1), both ends of the heat dissipation fin (25) are fixedly connected to the mounting frame (26), one end of the heat dissipation fan blade (27) is rotatably connected with the inside of the mounting frame (26) and extends to the outside of the mounting frame (26) and is fixedly connected with one end of the first bevel gear (28).

8. The 90° rotating link mechanism ram of claim 1, wherein: One end of the second bevel gear (29) is engaged with the other end of the first bevel gear (28), the other end of the second bevel gear (29) is fixedly connected with one end of the driving shaft (30), the other end of the driving shaft (30) is fixedly connected with one end of the third bevel gear (31), the other end of the third bevel gear (31) is engaged with one end of the fourth bevel gear (32), and the other end of the fourth bevel gear (32) is fixedly connected with the center of the driving shaft (9).

9. The 90° rotating link mechanism ram of claim 8, wherein: The outer part of the bearing seat (33) is fixedly connected to the inner wall of the cylinder body (1), and the inner ring of the bearing seat (33) is fixedly connected to the outer surface of the driving shaft (30).

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