A multi-piston rod cylinder and method of operation thereof
By setting multiple piston chambers and air ports on the cylinder body, the precise connection of multiple piston rods is achieved, which solves the problems of large assembly errors and excessive size in the existing technology, and improves the cylinder's accuracy and space utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- RISING PERCISION ENG CO LTD
- Filing Date
- 2023-05-11
- Publication Date
- 2026-06-26
AI Technical Summary
The existing assembly error between the cylinder and the connecting parts is large, which leads to a large piston rod fit error and cannot meet the requirements of precision equipment. In addition, the assembly method of at least two cylinders plus the connecting parts is too bulky and cannot be used in precision equipment with limited space.
Design a multi-piston rod cylinder by setting at least two piston chambers on the cylinder body and setting their central axis at a predetermined angle, connecting the piston rod to the cylinder body, using multiple air ports to control the extension and retraction of the piston rod, reducing the number of air ports, and using guide rail assemblies and slide components to improve stability.
It reduces the matching error of piston rods at different angles, reduces the overall size of the cylinder, meets the requirements of precision equipment, and reduces the failure rate of air leakage at the air port and the space occupation rate.
Smart Images
Figure CN122280919A_ABST
Abstract
Description
[0001] This application is a divisional application of Chinese patent application No. 2023105252440, filed on May 11, 2023, entitled "A multi-piston rod cylinder and its working method". Technical Field
[0002] This invention belongs to the field of pneumatic components, specifically a multi-piston rod cylinder and its working method. Background Technology
[0003] Existing cylinders are all single-piston rod cylinders. To use a cylinder to perform multi-angle work, it is necessary to use connecting parts such as angle iron to connect two cylinders together and set the piston rods of the two cylinders at a predetermined angle. Then, the multi-angle work is achieved by passing air into the two cylinders respectively.
[0004] The existing technology of connecting at least two cylinders together using connectors such as angle irons has the following problems when in use: First, the assembly error between the cylinder and the connector is large, resulting in a large matching error of the piston rods of at least two cylinders, which cannot meet the requirements of precision equipment; Second, the assembly method of at least two cylinders plus at least one connector has the problem that the size is too large and cannot be used in precision equipment with limited space. Summary of the Invention
[0005] Purpose of the invention: To provide a multi-piston rod cylinder that connects multiple piston rods at different angles to a cylinder body, thereby reducing the matching error of piston rods at different angles to solve the problem of large matching error of piston rods in the prior art. At the same time, it can reduce the overall size of the cylinder to solve the problem of excessive size in the assembly method of at least two cylinders plus at least one connecting part in the prior art.
[0006] The technical solution of the present invention is as follows: a multi-piston rod cylinder includes: a cylinder body, at least two piston rods and a piston component, wherein the piston component is connected to the piston rods.
[0007] The cylinder body is provided with at least two piston chambers and a number of air ports. Each piston chamber is provided with at least one piston rod and piston member. The piston member divides the piston chamber into a rod chamber and a rodless chamber. Each air port communicates with at least one rod chamber and / or rodless chamber.
[0008] The piston chamber includes at least one first piston chamber and at least one second piston chamber, wherein the central axes of the first piston chamber and the second piston chamber are arranged at a predetermined angle, and the central axis of the piston rod is parallel or collinear with the central axis of the corresponding piston chamber.
[0009] In a further embodiment, the multi-piston rod cylinder further includes a return spring, which is disposed in the rod chamber, with one end connected to the end of the rod chamber and the other end connected to the piston member, the return spring matching the number of piston chambers.
[0010] The cylinder includes: an air port that communicates with all rodless chambers, and through the cooperation of the air port and the return spring, all piston rods can be extended and retracted simultaneously.
[0011] In another embodiment, the cylinder includes two ports, one of which communicates with all rodless chambers and the other port communicates with all rod chambers.
[0012] In another embodiment, the cylinder includes two air ports, one of which communicates with the rodless chamber of the first piston chamber, and the other air port communicates with the rod chamber of the first piston chamber.
[0013] The rodless chamber of the first piston chamber is connected to the rod chamber of the second piston chamber.
[0014] The rod chamber of the first piston chamber is connected to the rodless chamber of the second piston chamber. Through the cooperation of the two air ports, the extension and retraction of all piston rods can be controlled. Compared with the existing technology that requires the use of two T-joints and then connecting the air pipe to four air ports to make the two cylinders connect in parallel, the number of air ports and T-joints is reduced, and the air leakage failure rate is reduced.
[0015] In another embodiment, the cylinder includes three air ports: a first air port, a second air port, and a third air port.
[0016] The first air port is connected to the rodless chamber of the first piston chamber.
[0017] The second air port is connected to the rod chamber of the second piston chamber.
[0018] The third air port is connected to both the rod chamber of the first piston chamber and the rodless chamber of the second piston chamber. Through the three air ports, it is possible not only to control the piston rods of the two piston cylinders to extend and retract respectively, but also to control the piston rods of the two piston cylinders to extend simultaneously.
[0019] In another embodiment, the cylinder includes three air ports: a fourth air port, a fifth air port, and a sixth air port.
[0020] The fourth air port is connected to the rod chamber of the first piston chamber.
[0021] The fifth air port is connected to the rodless chamber of the second piston chamber.
[0022] The sixth air port is simultaneously connected to the rodless chamber of the first piston chamber and the rod chamber of the second piston chamber. Through the three air ports, the piston rods of the two piston cylinders can be controlled to extend and retract respectively.
[0023] In another embodiment, the cylinder includes three air ports: a seventh air port, an eighth air port, and a ninth air port.
[0024] The seventh air port is connected to the rod chamber of the first piston chamber.
[0025] The eighth air port is connected to the rod chamber of the second piston chamber.
[0026] The ninth air port is simultaneously connected to the rodless chamber of the first piston chamber and the rodless chamber of the second piston chamber.
[0027] The three air ports can control the piston rods of the two piston cylinders to extend separately, and can also make the piston rods of the two piston cylinders extend and retract simultaneously.
[0028] In another embodiment, the cylinder includes four air ports, which are respectively connected to the rod chamber of the first piston chamber, the rodless chamber of the first piston chamber, the rod chamber of the second piston chamber, and the rodless chamber of the second piston chamber. The four air ports can not only control the piston rods of the two piston cylinders to extend and retract respectively, but also enable the piston rods of the two piston cylinders to extend and retract simultaneously.
[0029] In a further embodiment, the multi-piston rod cylinder also includes at least one guide rail assembly and a slide.
[0030] The guide rail assembly includes a slider connected to the cylinder body and a slide rail connected to the slide rail, the extension axis of which is parallel to the central axis of the first piston chamber or the second piston chamber.
[0031] The slide is connected to the slide rail and at least one piston rod, and the guide rail assembly can further improve the working stability when the piston rod extends or retracts.
[0032] In a further embodiment, the slide is an L-shaped sheet metal plate, which can greatly reduce its production cost and weight.
[0033] In a further embodiment, a method for operating a multi-piston rod cylinder includes: when the piston rods of the first piston chamber and the second piston chamber are both in the retracted state, air is introduced into the first air port and the second air port, and air is discharged through the third air port 13; air is introduced into the rodless chamber of the first piston chamber; air is discharged from the rod chamber of the first piston chamber; the piston rod of the first piston chamber enters the extended state; and the piston rod of the second piston chamber remains in the retracted state.
[0034] or When the piston rod of the first piston chamber is in the extended state and the piston rod of the second piston chamber is in the retracted state, air is introduced into the third air port, and air is discharged from the first air port and the second air port. Air is introduced into the rod chamber of the first piston chamber and the rodless chamber of the second piston chamber. Air is discharged from the rodless chamber of the first piston chamber and the rod chamber of the second piston chamber. The piston rod of the first piston chamber enters the retracted state, and the piston rod of the second piston chamber enters the extended state.
[0035] or When the piston rod of the first piston chamber is in the extended state and the piston rod of the second piston chamber is in the retracted state, air is first introduced into the second air port and exhausted through the third air port, so that the rod chamber of the second piston chamber receives air. Then, while keeping the second air port in the air intake state, air is introduced into the third air port and exhausted through the first air port, so that the rod chamber of the first piston chamber receives air, causing the piston rod of the first piston chamber to enter the retracted state. At this time, the air pressure in the rod chamber and the rodless chamber of the second piston chamber is the same, the position of the piston rod in the second piston chamber remains unchanged, and the piston rods of both the first piston chamber and the second piston chamber are in the retracted state.
[0036] or When the piston rods of both the first and second piston chambers are extended, air is first introduced through the third air port, and air is exhausted through the first air port. Air is introduced into the rod chamber of the first piston chamber and the rodless chamber of the second piston chamber. Air is exhausted from the rodless chamber of the first piston chamber, causing the piston rod of the first piston chamber to enter the retracted state. Then, air is introduced through the second air port, and air is exhausted through the third air port. Air is introduced into the rod chamber of the second piston chamber and air is exhausted from the rodless chamber of the second piston chamber, causing the piston rod of the second piston chamber to enter the retracted state. The piston rod of the first piston chamber remains in the retracted state.
[0037] The beneficial effects of the present invention are as follows: First, by providing at least one first piston chamber and at least one second piston chamber on the cylinder body, and setting the central axes of the different piston chambers at a predetermined angle, different piston rods can be connected to a cylinder body at different angles, which can reduce the matching error of piston rods at different angles. This solves the problem that the assembly error between the cylinder and the connecting parts in the prior art is large, resulting in a large matching error of the piston rods of at least two cylinders, which cannot meet the requirements of precision equipment.
[0038] Second, the use of multiple pistons in a single cylinder can reduce the overall size of the cylinder, solving the problem that existing assembly methods, which require at least two cylinders plus at least one connecting part, result in excessively large volumes that cannot be used in precision equipment with limited space. Attached Figure Description
[0039] Figure 1 This is an isometric schematic diagram of the three air inlets of the first embodiment of the present invention.
[0040] Figure 2 This is a front view schematic diagram of the three air inlets of the first embodiment of the present invention.
[0041] Figure 3 This is the present invention. Figure 2 A schematic diagram of the AA section.
[0042] Figure 4 This is the present invention. Figure 2 A schematic diagram illustrating the principle.
[0043] Figure 5 This is a front view schematic diagram of the three air inlets of the second embodiment of the present invention.
[0044] Figure 6 This is the invention Figure 5 A schematic diagram of the BB cross section.
[0045] Figure 7 This is the invention Figure 5 A schematic diagram illustrating the principle.
[0046] Figure 8 This is a schematic diagram of the principle of the three air ports in the third embodiment of the present invention.
[0047] Figure 9 This is a schematic diagram of the principle of an air inlet according to the fourth embodiment of the present invention.
[0048] Figure 10 This is a schematic diagram of the principle of two air ports in the fifth embodiment of the present invention.
[0049] Figure 11 This is a schematic diagram of the principle of two air ports in the sixth embodiment of the present invention.
[0050] The reference numerals in the figure are as follows: cylinder 1, piston rod 2, guide rail assembly 3, slide 4, first piston chamber 5, second piston chamber 6, return spring 7, first air port 11, second air port 12, third air port 13, sixth air port 14, fifth air port 15, fourth air port 16, ninth air port 17, eighth air port 18, seventh air port 19, slider 31, slide rail 32, rod chamber 51 of the first piston chamber 5, rodless chamber 52 of the first piston chamber 5. Detailed Implementation
[0051] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the invention. However, it will be apparent to those skilled in the art that the invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid obscuring the invention.
[0052] This application discloses a multi-piston rod cylinder, which connects multiple piston rods at different angles to a cylinder body. This reduces the matching error of piston rods at different angles, thus solving the problem of large matching error of piston rods in the prior art. At the same time, it can reduce the overall size of the cylinder, thus solving the problem of excessive size in the assembly method of at least two cylinders plus at least one connecting part in the prior art.
[0053] First embodiment, A multi-piston rod cylinder includes: a cylinder body 1, at least two piston rods 2, and a piston assembly, the piston assembly being connected to the piston rods 2.
[0054] The cylinder body 1 is provided with at least two piston chambers and several air ports. Each piston chamber is provided with at least one piston rod 2 and a piston component. The piston component divides the piston chamber into a rod chamber 51 and a rodless chamber 52. Each air port communicates with at least one rod chamber 51 and / or rodless chamber 52. The cylinder body also includes an end cap, which is provided at the end of the piston chamber that communicates with the outside and is used to seal the piston chamber.
[0055] By providing at least one first piston chamber 5 and at least one second piston chamber 6 on the cylinder body 1, and setting the central axes of the different piston chambers at a predetermined angle, different piston rods 2 can be connected to a cylinder body 1 at different angles, which can reduce the matching error of piston rods 2 at different angles. Multiple pistons sharing a cylinder body 1 can reduce the overall volume of the cylinder.
[0056] The piston chamber includes at least one first piston chamber 5 and at least one second piston chamber 6. The central axes of the first piston chamber 5 and the second piston chamber 6 are arranged at a predetermined angle, and the central axis of the piston rod 2 is parallel or collinear with the central axis of the corresponding piston chamber.
[0057] like Figure 1 , 2 As shown in Figures 3 and 4, a first piston chamber 5 and two second piston chambers 6 are provided. The central axes of the first piston chamber 5 and the second piston chamber 6 are set at 90° apart, and the central axis of the piston rod 2 is collinear with the central axis of the corresponding piston chamber.
[0058] The cylinder block 1 includes three air ports: the first air port 11, the second air port 12, and the third air port 13.
[0059] The first air port 11 is connected to the rodless chamber 52 of the first piston chamber 5.
[0060] The second air port 12 is connected to the rod chamber of the second piston chamber 6.
[0061] The third air port 13 is simultaneously connected to the rod chamber 51 of the first piston chamber 5 and the rodless chamber of the second piston chamber 6.
[0062] In this embodiment, the multi-piston rod cylinder further includes at least one guide rail assembly 3 and a slide 4.
[0063] The guide rail assembly 3 includes a slider 31 connected to the cylinder 1 and a slide rail 32 connected to the slide rail 32. The extension axis of the slide rail 32 is parallel to the central axis of the first piston chamber 5 or the second piston chamber 6.
[0064] The slide 4 is connected to the slide rail 32 and at least one piston rod 2, as shown in the figure. The slide 4 is connected to the piston rod 2 of the first piston chamber 5.
[0065] In this embodiment, the slide 4 is an L-shaped plate fabricated from sheet metal.
[0066] The guide rail assembly 3 can further improve the working stability of the piston rod 2 when it extends or retracts. By using an L-plate made of sheet metal as the slide table 4, compared with the existing L-block made of aluminum block as the slide table 4, the production cost and weight can be greatly reduced.
[0067] The working method of the multi-piston rod cylinder in this embodiment includes: when the piston rods of the first piston chamber 5 and the second piston chamber 6 are both in the retracted state, the first air port 11 and the second air port 12 are used for air intake, the third air port 13 is used for air exhaust, the rodless chamber 52 of the first piston chamber 5 is supplied with air, the rod chamber 51 of the first piston chamber 5 is used for air exhaust, the piston rod of the first piston chamber 5 enters the extended state, and the piston rod of the second piston chamber 6 remains in the retracted state.
[0068] Alternatively, when the piston rod of the first piston chamber 5 is in the extended state and the piston rod of the second piston chamber 6 is in the retracted state, air is introduced into the third air port 13, and air is exhausted from the first air port 11 and the second air port 12. Air is introduced into the rod chamber 51 of the first piston chamber 5 and the rodless chamber of the second piston chamber 6, and air is exhausted from the rodless chamber 52 of the first piston chamber 5 and the rod chamber of the second piston chamber 6. The piston rod of the first piston chamber 5 enters the retracted state, and the piston rod of the second piston chamber 6 enters the extended state.
[0069] Alternatively, when the piston rod of the first piston chamber 5 is in the extended state and the piston rod of the second piston chamber 6 is in the retracted state, firstly, air is introduced into the second air port 12 and vented through the third air port 13, so that the rod chamber of the second piston chamber 6 receives air. Then, while keeping the second air port 12 in the air intake state, air is introduced into the third air port 13 and vented through the first air port 11, so that the rod chamber 51 of the first piston chamber 5 receives air, causing the piston rod of the first piston chamber 5 to enter the retracted state. At this time, the air pressure in the rod chamber and the rodless chamber 52 of the second piston chamber 6 is the same, the position of the piston rod of the second piston chamber 6 remains unchanged, and the piston rods of both the first piston chamber 5 and the second piston chamber 6 are in the retracted state.
[0070] Alternatively, when the piston rods of both the first piston chamber 5 and the second piston chamber 6 are in the extended state, firstly, air is introduced through the third air port 13 and exhausted through the first air port 11. Air is introduced into the rod chamber 51 of the first piston chamber 5 and the rodless chamber of the second piston chamber 6, and exhausted through the rodless chamber 52 of the first piston chamber 5, causing the piston rod of the first piston chamber 5 to enter the retracted state. Then, air is introduced through the second air port 12 and exhausted through the third air port 13. Air is introduced into the rod chamber of the second piston chamber 6 and exhausted through the rodless chamber of the second piston chamber 6, causing the piston rod 2 of the second piston chamber 6 to enter the retracted state, while the piston rod of the first piston chamber 5 remains in the retracted state.
[0071] The above working method enables individual control of the piston rods in the first piston chamber 5 and the second piston chamber 6, thus addressing various working conditions.
[0072] The three air ports allow for the separate extension and retraction of the piston rods 2 of the two piston cylinders. Compared to existing technologies that use four air pipes connected to four air ports to control two cylinders individually, this reduces the number of air ports, further lowers the space requirement, simplifies the installation process, and reduces the air port leakage failure rate.
[0073] The second embodiment is based on the first embodiment as follows: Figure 5 , 6 As shown in Figure 7, the difference between this embodiment and the first embodiment is that the first air port 11, the second air port 12, and the third air port 13 are replaced by the fourth air port 16, the fifth air port 15, and the sixth air port 14.
[0074] In this embodiment, the cylinder 1 includes three air ports: a fourth air port 16, a fifth air port 15, and a sixth air port 14.
[0075] The fourth air port 16 is connected to the rod chamber 51 of the first piston chamber 5.
[0076] The fifth air port 15 is connected to the rodless chamber of the second piston chamber 6.
[0077] The sixth air port 14 is simultaneously connected to the rodless chamber 52 of the first piston chamber 5 and the rod chamber of the second piston chamber 6.
[0078] The working method of the multi-piston rod cylinder in this embodiment includes: when the piston rods of the first piston chamber 5 and the second piston chamber 6 are both in the retracted state, the sixth air port 14 is used for air intake, the fourth air port 16 and the fifth air port 15 are used for air exhaust, the rodless chamber 52 of the first piston chamber 5 is supplied with air, the rod chamber 51 of the first piston chamber 5 is used for air exhaust, the piston rod 2 of the first piston chamber 5 is put into the extended state, and the piston rod of the second piston chamber 6 remains in the retracted state.
[0079] Alternatively, when the piston rods of the first piston chamber 5 and the second piston chamber 6 are both in the extended state, the sixth air port 14 is used for intake, the fourth air port 16 and the fifth air port 15 are used for exhaust, the rod chamber of the second piston chamber 6 receives air, the rodless chamber of the second piston chamber 6 exhausts air, the piston rod of the second piston chamber 6 enters the retracted state, and the first piston chamber 5 remains in the extended state.
[0080] Alternatively, when the piston rods of the first piston chamber 5 and the second piston chamber 6 are both in the extended state, firstly, air is introduced into the sixth air port 14 and vented through the fifth air port 15. Air is introduced into the rod chamber of the second piston chamber 6 and vented through the rodless chamber of the second piston chamber 6. The piston rod 2 of the second piston chamber 6 enters the retracted state. Then, air is introduced into the fourth air port 16 and vented through the sixth air port 14. Air is introduced into the rod chamber 51 of the first piston chamber 5 and vented through the rodless chamber 52 of the first piston chamber 5. The piston rod of the first piston chamber 5 enters the retracted state. At this time, the piston rods 2 of both the first piston chamber 5 and the second piston chamber 6 are in the retracted state.
[0081] Or, when the piston rod of the first piston chamber 5 is in the extended state and the piston rod of the second piston chamber 6 is in the retracted state, the fourth air port 16 is used for air intake and the sixth air port 14 is used for air exhaust. The rod chamber 51 of the first piston chamber 5 receives air and the rodless chamber 52 of the first piston chamber 5 exhausts air. The piston rod of the first piston chamber 5 enters the retracted state. At this time, the piston rods of both the first piston chamber 5 and the second piston chamber 6 are in the retracted state.
[0082] Alternatively, when the piston rod of the first piston chamber 5 is in the retracted state and the piston rod of the second piston chamber 6 is in the extended state, firstly, air is introduced through the fourth air port 16 and vented through the sixth air port 14, so that the rod chamber 51 of the first piston chamber 5 receives air. Then, while keeping the fourth air port 16 in the intake state, air is introduced through the sixth air port 14 and vented through the fifth air port 15, so that the rod chamber of the second piston chamber 6 receives air, causing the piston rod 2 of the second piston chamber 6 to enter the retracted state. At this time, the air pressure in the rod chamber 51 and the rodless chamber 52 of the first piston chamber 5 is the same, the position of the piston rod of the first piston chamber 5 remains unchanged, and the piston rods of both the first piston chamber 5 and the second piston chamber 6 are in the retracted state.
[0083] The above working method enables individual control of the piston rod 2 in the first piston chamber 5 and the second piston chamber 6, thus addressing various working conditions.
[0084] The three air ports allow for the separate extension and retraction of the piston rods 2 of the two piston cylinders. Compared to existing technologies that use four air pipes connected to four air ports to control two cylinders individually, this reduces the number of air ports, further lowers the space requirement, simplifies the installation process, and reduces the air port leakage failure rate.
[0085] The third embodiment is based on the first embodiment as follows: Figure 8The difference between this embodiment and the first embodiment is that the cylinder 1 has three air ports, namely the seventh air port 19, the eighth air port 18 and the ninth air port 17, which replace the first air port, the second air port and the third air port.
[0086] In this embodiment, the cylinder 1 includes three air ports: the seventh air port 19, the eighth air port 18, and the ninth air port 17.
[0087] The seventh air port 19 is connected to the rod chamber of the first piston chamber 5.
[0088] The eighth air port 18 is connected to the rod chamber of the second piston chamber 6.
[0089] The ninth air port 17 is simultaneously connected to the rodless chamber of the first piston chamber 5 and the rodless chamber of the second piston chamber 6.
[0090] In this embodiment, the working method of the multi-piston rod cylinder includes: when the piston rods of the first piston chamber 5 and the second piston chamber 6 are both in the retracted state, the ninth air port 17 is used for intake, the seventh air port 19 and the eighth air port 18 are used for exhaust, the rodless chambers of the first piston chamber 5 and the second piston chamber 6 are used for intake, and the rod chambers of the first piston chamber 5 and the second piston chamber 6 are used for exhaust, so that the piston rods of the first piston chamber 5 and the second piston chamber 6 simultaneously enter the extended state.
[0091] Alternatively, when the piston rods of the first piston chamber 5 and the second piston chamber 6 are both in the retracted state, first, air is introduced into the seventh air port 19, and then, while the seventh air port 19 is kept in the air intake state, air is introduced into the ninth air port 17 and air is exhausted from the eighth air port 18. This allows air to enter the rod chamber of the first piston chamber 5, air to enter the rodless chambers of the first piston chamber 5 and the second piston chamber 6, and air to be exhausted from the rod chamber of the second piston chamber 6. This causes the piston rod of the second piston chamber 6 to enter the extended state, while the piston rod of the first piston chamber 5 remains in the retracted state.
[0092] Alternatively, when the piston rods 2 of both the first piston chamber 5 and the second piston chamber 6 are in the retracted state, first, air is introduced into the eighth air port 18 and vented through the ninth air port 17. Then, while keeping the eighth air port 18 in the air intake position, air is introduced into the ninth air port 17 and vented through the seventh air port 19. This allows air to enter the rod chamber of the second piston chamber 6, and air to enter the rodless chambers of both the first piston chamber 5 and the second piston chamber 6. Air is also released from the rod chamber of the first piston chamber 5, causing the piston rod of the first piston chamber 5 to enter the extended state, while the piston rod of the second piston chamber 6 remains in the retracted state.
[0093] Or, when the piston rod of the first piston chamber 5 and / or the second piston chamber 6 is in the extended state, the seventh air port 19 and / or the eighth air port 18 are allowed to enter, the ninth air port 17 is allowed to exhaust, the rod chamber of the first piston chamber 5 and / or the second piston chamber 6 receives air, the rodless chamber of the first piston chamber 5 and / or the second piston chamber 6 exhausts air, and the piston rod of the first piston chamber 5 and / or the second piston chamber 6 enters the retracted state.
[0094] With three air ports, the piston rods 2 of the two piston cylinders can be controlled to extend and retract simultaneously. Compared with the existing technology that uses four air pipes connected to four air ports to control two cylinders separately, this reduces the number of air ports, further reduces space occupancy, simplifies the installation process, and reduces the air port leakage failure rate.
[0095] The fourth embodiment is based on the first embodiment as follows: Figure 9 The difference between this embodiment and the first embodiment is that the cylinder 1 is provided with an air port.
[0096] In this embodiment, the multi-piston rod cylinder also includes a return spring 7, which is disposed in the rod chamber 51. One end of the return spring 7 is connected to the end of the rod chamber 51, and the other end is connected to the piston. The number of piston chambers is matched with the number of return springs 7.
[0097] The cylinder 1 includes a gas port that communicates with all rodless chambers 52.
[0098] When air is supplied through the air inlet, the piston components in the first piston chamber 5 and the second piston chamber 6 overcome the elastic force of the return spring 7 and drive the piston rod 2 to extend.
[0099] By using an air port in conjunction with a return spring 7, all piston rods 2 can be extended and retracted, further reducing space occupancy, simplifying the installation process, and reducing the air port leakage failure rate.
[0100] The fifth embodiment is based on the first embodiment as follows: Figure 10 The difference between this embodiment and the first embodiment is that the cylinder 1 is provided with two air ports.
[0101] In this embodiment, the cylinder 1 includes two air ports, one of which is connected to all rodless chambers 52, and the other air port is connected to all rod chambers 51.
[0102] When air enters through the air inlet connected to the rodless chamber 52, the rodless chambers of the first piston chamber 5 and the second piston chamber 6 receive air, the rod chamber 51 exhausts air, and the piston rods 2 of both the first piston chamber 5 and the second piston chamber 6 enter the extended state.
[0103] When air enters through the air port connected to the rod chamber 51, the rod chambers of the first piston chamber 5 and the second piston chamber 6 receive air, the rodless chamber 52 exhausts air, and the piston rods 2 of both the first piston chamber 5 and the second piston chamber 6 enter the retracted state.
[0104] By cooperating with the two air ports and the return spring 7, all piston rods 2 can be extended and retracted, further reducing space occupancy, simplifying the installation process, and reducing the air port leakage failure rate.
[0105] The sixth embodiment is based on the first embodiment as follows: Figure 11 The difference between this embodiment and the first embodiment is that the cylinder 1 is provided with two air ports.
[0106] In this embodiment, the cylinder 1 includes two air ports, one of which is connected to the rodless chamber 52 of the first piston chamber 5, and the other air port is connected to the rod chamber 51 of the first piston chamber 5.
[0107] The rodless chamber 52 of the first piston chamber 5 is connected to the rod chamber of the second piston chamber 6.
[0108] The rod chamber 51 of the first piston chamber 5 is connected to the rodless chamber of the second piston chamber 6.
[0109] When air enters through the air port connected to the rodless chamber 52 of the first piston chamber 5, the rodless chamber 52 of the first piston chamber 5 receives air, the rod chamber 51 of the first piston chamber 5 exhausts air, the piston rod 2 of the first piston chamber 5 enters the extended state, the rod chamber of the second piston chamber 6 receives air, the rodless chamber of the second piston chamber 6 exhausts air, and the piston rod 2 of the first piston chamber 5 enters the retracted state.
[0110] When air enters through the air port connected to the rod chamber 51 of the first piston chamber 5, the rod chamber 51 of the first piston chamber 5 receives air, the rodless chamber 52 of the first piston chamber 5 exhausts air, the piston rod 2 of the first piston chamber 5 enters the retracted state, the rodless chamber of the second piston chamber 6 receives air, the rod chamber of the second piston chamber 6 exhausts air, and the piston rod 2 of the first piston chamber 5 enters the extended state.
[0111] By cooperating with the two air ports and the return spring 7, all piston rods 2 can be extended and retracted, further reducing space occupancy, simplifying the installation process, and reducing the air port leakage failure rate.
[0112] This application describes various forms of cylinder 1 to meet different working needs. The cylinder 1 described in any of the above embodiments can be selected to form a multi-piston rod cylinder according to equipment requirements.
[0113] As described above, although the invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the invention itself. Various changes in form and detail may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims
1. A method for operating a multi-piston rod cylinder, characterized in that, include: When the piston rods of the first piston chamber and the second piston chamber are both in the retracted state, air is introduced through the sixth air port and exhausted through the fourth and fifth air ports, so that the rodless chamber of the first piston chamber receives air and the rod chamber of the first piston chamber exhausts air, causing the piston rod of the first piston chamber to enter the extended state, while the piston rod of the second piston chamber remains in the retracted state.
2. The working method of a multi-piston rod cylinder according to claim 1, characterized in that, Also includes: When the piston rods of the first piston chamber and the second piston chamber are both in the extended state, air is introduced through the sixth air port, and air is exhausted through the fourth and fifth air ports. Air is introduced into the rod chamber of the second piston chamber, and air is exhausted from the rodless chamber of the second piston chamber. The piston rod of the second piston chamber enters the retracted state, while the first piston chamber remains in the extended state.
3. The working method of a multi-piston rod cylinder according to claim 1, characterized in that, Also includes: When the piston rods of both the first and second piston chambers are extended, air is first introduced through the sixth air port and exhausted through the fifth air port. Air is introduced into the rod chamber of the second piston chamber and exhausted through the rodless chamber. The piston rod of the second piston chamber enters the retracted state. Then, air is introduced through the fourth air port and exhausted through the sixth air port. Air is introduced into the rod chamber of the first piston chamber and exhausted through the rodless chamber. The piston rod of the first piston chamber enters the retracted state. At this time, the piston rods of both the first and second piston chambers are in the retracted state.
4. The working method of a multi-piston rod cylinder according to claim 1, characterized in that, Also includes: When the piston rod of the first piston chamber is in the extended state and the piston rod of the second piston chamber is in the retracted state, air is introduced through the fourth air port and discharged through the sixth air port. Air is introduced into the rod chamber of the first piston chamber and discharged through the rodless chamber of the first piston chamber. The piston rod of the first piston chamber enters the retracted state. At this time, the piston rods of both the first and second piston chambers are in the retracted state.
5. The working method of a multi-piston rod cylinder according to claim 1, characterized in that, Also includes: When the piston rod in the first piston chamber is in the retracted state and the piston rod in the second piston chamber is in the extended state, air is first introduced through the fourth air port and exhausted through the sixth air port, so that the rod chamber of the first piston chamber receives air. Then, while keeping the fourth air port in the air intake, air is introduced through the sixth air port and exhausted through the fifth air port, so that the rod chamber of the second piston chamber receives air, causing the piston rod of the second piston chamber to enter the retracted state. At this time, the air pressure in the rod chamber and the rodless chamber of the first piston chamber is the same, the position of the piston rod in the first piston chamber remains unchanged, and the piston rods of both the first and second piston chambers are in the retracted state.
6. A multi-piston rod cylinder using the working method according to any one of claims 1-5, characterized in that, include: A cylinder block, at least two piston rods, and a piston assembly connected to the piston rods; The cylinder body is provided with at least two piston chambers and three air ports. Each piston chamber is provided with at least one piston rod and piston member. The piston member divides the piston chamber into a rod chamber and a rodless chamber. The piston chamber includes: a first piston chamber and a second piston chamber, the central axes of the first piston chamber and the second piston chamber are set at a predetermined angle, and the central axis of the piston rod is parallel or collinear with the central axis of the corresponding piston chamber. The cylinder body includes three air ports, namely: the fourth air port, the fifth air port and the sixth air port; The fourth air port is connected to the rod chamber of the first piston chamber; The fifth air port is connected to the rodless chamber of the second piston chamber; The sixth air port is simultaneously connected to the rodless chamber of the first piston chamber and the rod chamber of the second piston chamber.
7. The multi-piston rod cylinder according to claim 6, characterized in that, Its characteristic is that it further includes: at least one guide rail assembly and a slide; The guide rail assembly includes: a slider connected to the cylinder body, and a slide rail connected to the slide rail, wherein the extension axis of the slide rail is parallel to the central axis of the first piston chamber or the second piston chamber. The slide is connected to the slide rail and at least one piston rod.
8. The multi-piston rod cylinder according to claim 7, characterized in that, Its features are, The slide is an L-shaped sheet metal plate.