A hydraulic cylinder bidirectional synchronous drive clamping device

Abstract

The present invention relates to a bidirectional synchronous drive clamping device for oil cylinders, the device comprises an oil cylinder monomer a that can be used for forward drive and an oil cylinder monomer b that can be used for reverse drive, each oil cylinder monomer has a cylinder body, a piston rod and a piston that reciprocates linearly in the cylinder body, there are at least two oil cylinder monomers a and oil cylinder monomers b, and the number is the same, each oil cylinder monomer a and oil cylinder monomer b are staggered and connected in sequence, so that the piston rods of adjacent oil cylinder monomers move back or toward each other, the piston rods of each oil cylinder monomer a are rigidly connected, and the piston rods of each oil cylinder monomer b are rigidly connected. The oil cylinder monomer a and the oil cylinder monomer b are staggered and connected, each oil cylinder forms a series structure, oil is fed in sequence, and the previous oil cylinder monomer discharges oil while the next oil cylinder monomer is fed with oil, the oil cylinder monomers have a high correlation, and the piston rods of the corresponding oil cylinder monomers can be driven to move synchronously, and the amount of oil in and out is the same, thereby effectively ensuring the bidirectional synchronization of the oil cylinder monomer a and the oil cylinder monomer b in the device.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder driving, in particular to an oil cylinder bidirectional synchronous driving clamping device. Background Art

[0002] The oil cylinder is a hydraulic cylinder. The hydraulic cylinder is a linear motion actuator whose output force is proportional to the effective area of ​​the piston and the pressure difference on both sides. Its function is to convert hydraulic energy into mechanical energy. The input of the hydraulic cylinder is the flow rate and pressure of the fluid, and the output is the linear motion speed and force. The piston of the hydraulic cylinder can complete linear reciprocating motion, and the output linear displacement is limited. The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy of reciprocating linear motion. The hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod and a sealing device. When the above-mentioned oil cylinder is used to linearly drive two objects to approach or move away from each other, since there is no direct connection between the two oil cylinders, they only work independently through the control mechanism, and the synchronization of the oil cylinder is poor; when the two objects are driven to rotate and separate by the eccentric rotation of the oil cylinder, although the two objects can be driven to move synchronously, the connection structure between the rotating oil cylinder and the object is complicated, the oil cylinder manufacturing cost is high, and the maintenance is inconvenient. Summary of the invention

[0003] Purpose of the invention: In order to overcome the defects of the prior art, the present invention provides a cylinder bidirectional synchronous drive clamping device, in which each cylinder monomer a and cylinder monomer b are staggered and connected, so that the previous cylinder monomer is discharging oil while the next cylinder monomer is replenishing oil, thereby ensuring the synchronization of the bidirectional movement of the device.

[0004] The technical solution of the present invention is: a cylinder bidirectional synchronous drive clamping device, the device includes a cylinder monomer a that can be used for forward drive and a cylinder monomer b that can be used for reverse drive, each cylinder monomer has a cylinder body, a piston rod and a piston that reciprocates linearly in the cylinder body, there are at least two cylinder monomers a and cylinder monomers b, and the number is the same, each cylinder monomer a and cylinder monomer b are staggered and connected in sequence to achieve the piston rods of adjacent cylinder monomers to move away from or towards each other, the piston rods of each cylinder monomer a are rigidly connected, and the piston rods of each cylinder monomer b are rigidly connected.

[0005] Specifically, each oil cylinder is formed as a single unit.

[0006] By adopting the above technical scheme, the cylinder monomers a and the cylinder monomers b are connected in an alternating manner, and each cylinder forms a series structure and is filled with oil in sequence, so that the previous cylinder monomer discharges oil while the next cylinder monomer is filled with oil, which can drive the piston rod of the corresponding cylinder monomer to move. The correlation between each cylinder monomer is high, and the oil inlet and outlet amounts are the same, thereby effectively ensuring the bidirectional synchronization of the cylinder monomers a and the cylinder monomers b in the device; since there are at least two groups of cylinder monomers a and cylinder monomers b, and the number is the same, the piston rods of each cylinder monomer a move synchronously to form a cylinder drive module a that can be driven forward, and the piston rods of each cylinder monomer b move synchronously to form a cylinder drive module b that can be driven in the reverse direction, and the total oil intake of the cylinder drive module a is consistent with the total oil intake of the cylinder drive module b, so that the driven object can move back and forth stably, and the overall bidirectional movement of the device has high synchronization.

[0007] A further configuration of the present invention is that the device includes a transmission plate a and a transmission plate b which are arranged in parallel with each other, and also includes a guide rail which is arranged perpendicular to the two transmission plates, the piston rod of each oil cylinder monomer a is connected to the transmission plate a, the piston rod of each oil cylinder monomer b is connected to the transmission plate b, and the two transmission plates are slidably matched with the guide rail.

[0008] By adopting the above-mentioned further arrangement, the sliding of the piston rod can be guided in the opposite direction through the sliding cooperation between the transmission plate and the guide rail, thereby effectively avoiding deviation during the sliding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of a cylinder unit in a specific embodiment of the present invention;

[0010] Figure 2 It is a schematic diagram of the oil path of the device in a specific embodiment of the present invention. DETAILED DESCRIPTION

[0011] The technical scheme in this embodiment will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] like Figure 1 and Figure 2As shown, a bidirectional synchronous drive clamping device of a cylinder of the present invention comprises a cylinder monomer a1 which can be used for forward drive and a cylinder monomer b2 which can be used for reverse drive. Each cylinder monomer has a cylinder body 31, a piston rod 32 and a piston 33 which reciprocates linearly in the cylinder body 31. The cylinder body 31 is divided into an oil inlet chamber and an oil outlet chamber by the piston 33. There are at least two cylinder monomers a1 and at least two cylinder monomers b2, and the number is the same. Each cylinder monomer a1 and each cylinder monomer b2 are arranged in a staggered manner and are connected in sequence to realize that the piston rods 32 of adjacent cylinder monomers move away from or towards each other. The oil inlet chamber of each cylinder monomer a1 and the oil outlet chamber of the cylinder monomer b2 are on the same side. The piston rods 32 of each cylinder monomer a1 are rigidly connected to form a cylinder drive module a for forward drive. The piston rods 32 of each cylinder monomer b2 are rigidly connected to form a cylinder drive module b for reverse drive. Each cylinder monomer is integrally formed. The device comprises a transmission plate a which is relatively parallelly arranged. 4 and a transmission plate b5, and also includes a guide rail 6 arranged perpendicular to the two transmission plates, the piston rod 32 of each cylinder monomer a1 is connected to the transmission plate a4, the piston rod 32 of each cylinder monomer b2 is connected to the transmission plate b5, and the two transmission plates and the guide rail 6 are slidably matched.

[0013] In the embodiment, four oil cylinder units are provided, which are named No. 1 to No. 4 oil cylinder units in sequence, wherein No. 1 and No. 3 are oil cylinder units a, constituting oil cylinder drive module a, and No. 2 and No. 4 are oil cylinder units b, constituting oil cylinder drive module b. When the "forward direction" is leftward movement and the "reverse direction" is rightward movement, the oil inlet chamber of the oil cylinder unit a is set on the right, and the oil outlet chamber is set on the left, wherein No. 1 oil cylinder unit a is externally connected to the oil inlet, and No. 4 oil cylinder unit b is externally connected to the oil outlet;

[0014] When in use, a unit amount of oil is supplied to the No. 1 cylinder monomer a1. At this time, the piston 33 of the No. 1 cylinder monomer a1 is squeezed to the left, and the No. 1 cylinder monomer a1 discharges oil while the No. 2 cylinder monomer b2 is supplied with oil. At this time, the piston 33 of the No. 2 cylinder monomer b2 is squeezed to the right, so that the piston rods 32 of the two cylinder monomers move synchronously in opposite directions. Finally, the piston rod 32 of the No. 1 cylinder monomer a1 moves one unit distance to the left accordingly, and the piston rod 32 of the No. 2 cylinder monomer b2 moves one unit distance to the right accordingly. At the same time, the No. 2 cylinder monomer b2 discharges oil while the No. 3 cylinder monomer a1 discharges oil while the No. 4 cylinder monomer b2 discharges oil. Finally, the oil is discharged through the No. 4 cylinder monomer b2. Since the cylinder monomers a1 and b 2 is consistent, so that the driven object can move back and forth stably, the overall bidirectional movement of the device is highly synchronized, and the sliding cooperation between the two transmission plates and the guide rails 6 can guide the sliding reverse of the piston rod 32 of the cylinder unit.

[0015] Of course, oil can also be supplied to the No. 4 oil cylinder unit b2 and oil can be discharged from the No. 1 oil cylinder unit a1, so that the piston rods 32 of the adjacent oil cylinder units can move synchronously in opposite directions.

[0016] In the embodiment, six cylinder monomers may be provided, named No. 1 to No. 6 cylinder monomers in sequence, among which No. 1, 3 and 5 are cylinder monomers a, constituting cylinder drive module a, and No. 2, 4 and 6 are cylinder monomers b, constituting cylinder drive module b. The working principle is the same as the above embodiment.

Claims

1. A hydraulic cylinder bidirectional synchronous drive clamping device, The device includes a cylinder unit a for forward driving and a cylinder unit b for reverse driving. Each cylinder unit has a cylinder body, a piston rod and a piston that reciprocates linearly in the cylinder body. Features: There are at least two of the oil cylinder monomers a and the oil cylinder monomers b, and the number is the same. The oil cylinder monomers a and the oil cylinder monomers b are arranged alternately and are connected in sequence to achieve the movement of the piston rods of adjacent oil cylinder monomers away from or towards each other. The piston rods of the oil cylinder monomers a are rigidly connected, and the piston rods of the oil cylinder monomers b are rigidly connected.

2. The hydraulic cylinder bidirectional synchronous drive clamping device according to claim 1, characterized in that: Each oil cylinder is integrally formed.

3. A hydraulic cylinder bidirectional synchronous drive clamping device according to claim 1 or 2, characterized in that: The device comprises a transmission plate a and a transmission plate b which are arranged in parallel with each other, and also comprises a guide rail which is arranged perpendicular to the two transmission plates. The piston rod of each oil cylinder unit a is connected to the transmission plate a, and the piston rod of each oil cylinder unit b is connected to the transmission plate b. The two transmission plates are slidably matched with the guide rail.

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