Electric clamping cylinder tool

Abstract

The invention provides an electric clamping cylinder tool which comprises a clamping block, a clamping arm, a cylinder shell, a toggle rod mechanism, a linear motion mechanism, an in-place sensing mechanism, a dustproof mechanism, a power-off manual mechanism and a control system, the toggle rod mechanism is used for providing clamping force when the clamping tool clamps, the linear motion mechanism is used for transmitting power, and the in-place sensing mechanism is used for sensing the in-place sensing mechanism. The tool has the advantages that a linear motion mechanism of the lead screw, the speed reducer and the motor is adopted, the cam follower is additionally arranged in the linear motion process, and therefore it is guaranteed that the tool is smoother in the motion process.

Description

Technical Field

[0001] The invention relates to the technical field of clamping cylinder tools, and in particular to an electric clamping cylinder tool. Background Art

[0002] Power tools play a vital role in modern industry. They are driven by electricity, which greatly improves work efficiency and reduces the intensity of human labor. The investment in power tools is relatively low.

[0003] The prior art involves the following three applications:

[0004] Application 1: Clamping cylinder (CN218913326U) The utility model provides a clamping cylinder, including a cylinder, a casing and a clamping arm. A transmission shaft is rotatably arranged inside the casing, and the clamping arm is fixedly arranged at both ends of the transmission shaft. A crank is fixedly arranged in the middle of the transmission shaft, and a push-pull rod for driving the crank to swing is connected to the crank. A baffle and a connecting rod are arranged at the lower end of the push-pull rod. The cylinder has a piston rod, and a cylindrical cavity is opened at the end of the piston rod. The connecting rod is slidably arranged inside the cylindrical cavity, and an elastic support is provided between the bottom end of the connecting rod and the top of the cylindrical cavity. A limit ring corresponding to the baffle is arranged around the outer side of the piston rod, and an adjustment mechanism for adjusting the position of the limit ring is symmetrically arranged on both sides of the limit ring; in the utility model, the position of the limit ring can be adjusted and moved up and down by the adjustment mechanism to meet the demand for adjusting different upper swing angles of the clamping arm. There is no need to disassemble the cylinder during the adjustment process, thereby improving the convenience of debugging.

[0005] Application 2: Electric clamp (CN213946481U) The utility model relates to the technical field of clamps, and provides an electric clamp, including a mounting seat, a clamping mechanism, a driving mechanism and a guiding mechanism. The clamping mechanism includes a clamping finger and a rack, and the rack is fixedly connected to the clamping finger; the driving mechanism includes a driving motor and an output gear, and the output gear is connected to the output shaft of the driving motor, and the output gear is connected to the rack, and the output gear is used to drive the rack to perform linear reciprocating motion; the guiding mechanism includes a guide rail and a slider that slidably cooperates with the guide rail, and the guide rail is arranged in parallel with the rack, one of the guide rail and the slider is fixedly connected to the clamping finger, and the other of the guide rail and the slider is fixedly connected to the mounting seat. The electric clamp provided by the utility model adopts the coordination of the rack and the gear to realize the large stroke movement of the clamping finger, and adopts the coordination of the guide rail and the slider to improve the stability of the clamping finger movement, thereby solving the problem of small stroke and low movement stability of the existing clamping finger.

[0006] Application 3: Long-stroke electric clamp (CN216859769U) The present application provides a long-stroke electric clamp, including a support seat, a pair of clamping assemblies and a driving assembly, the support seat includes a supporting portion located between the pair of clamping assemblies, the driving assembly includes a motor, a nut and a pusher, the rotor shaft of the motor has an extension portion, the extension portion extends into the support seat, the end of the extension portion away from the rotor of the motor passes through the pusher, and is rotatably connected to the support portion, the nut is threadedly connected to the extension portion, the pusher is sleeved on the nut, and is respectively hinged to the pair of clamping assemblies. The long-stroke electric clamp provided by the present application uses the rotor shaft of the motor and the nut to form a screw nut pair, avoiding the problem of difficulty in ensuring concentricity of the connection between the rotor shaft and the screw in the related art, and because the two ends of the extension portion are respectively supported on the rotor and the support portion, the pusher driven by the nut is not easy to shake during the movement, thereby solving the problem of poor concentricity between the rotor shaft and the screw and poor stability of the pusher during the movement.

[0007] The technical difficulties of this type of equipment are: the electric gripper uses electricity as the energy medium, and its clamping force is small. It can only be used for objects with light weight and small size, and its applicability is narrow; this type of gripper can only work best in a dust-free environment, and is not suitable for working in an automotive welding production environment, and its application range is small. Summary of the invention

[0008] In order to overcome the above problems existing in the prior art, the present invention provides an electric clamping cylinder tool.

[0009] The present invention discloses an electric clamping cylinder tool, comprising a clamping block, a clamping arm, a cylinder housing, a toggle mechanism, a linear motion mechanism, an in-position sensing mechanism, a dustproof mechanism, a power-off manual mechanism and a control system. The toggle mechanism is used to provide a clamping force when the clamping tool is clamped, the linear motion mechanism is used to transmit power so that the entire tool can move, the in-position sensing mechanism is used to detect the state of the electric clamping tool, the dustproof mechanism is used to prevent dust from the clamping tool, the power-off manual mechanism is used to seal and manually open after power failure, and the control system is used to control the action of the clamping tool.

[0010] On this basis, the cylinder housing includes housing one and housing two, and housing two is mounted on housing one.

[0011] On this basis, the elbow mechanism includes a rotating shaft, a connecting rod 1, a connecting rod 2, a pull rod, a rotating shaft 1, a bushing 1, a bushing 2, a bushing 3, a rotating shaft 2, a bushing 4, a cam follower 1, a cam follower 2, a positioning shaft 1 and a positioning shaft 2, the two ends of the rotating shaft are respectively connected to the shell 1 and the shell 2, the bushing 1 is installed in the positioning hole of the rotating shaft, the rotating shaft is inserted into the inner hole of the bushing 1, the pull rod connects the connecting rod 1 and the connecting rod 2, the bushing 4 is installed in the positioning hole of the pull rod, the rotating shaft 2 is inserted into the inner hole of the bushing 4, the connecting rod 1 and the connecting rod 2 are respectively inserted into the two sides of the rotating shaft 1 and the rotating shaft 2 and locked, the cam follower 1 is positioned and locked to one side of the pull rod by the positioning shaft 1, the cam follower 2 is positioned and locked to the other side of the pull rod by the positioning shaft 2, the bushing 2 is installed in the internal mounting hole of the shell 1, the bushing 3 is installed in the internal mounting hole of the shell 2, and the cam follower 1 is installed in the U-shaped groove of the shell 1.

[0012] On this basis, the calculation formula of the toggle mechanism is:

[0013]

[0014]

[0015] Where: M is the clamping torque, N is the clamping force, L is the distance between the rotating center island and the workpiece, l1 is the length of rod 1, l2 is the length of rod 2, x1 is the distance from the rotation center to the piston rod, φ is the sum of the opening angle of rod 1 and the initial angle, and F is the force output by the linear drive mechanism.

[0016] On this basis, the linear motion mechanism includes bearing 1, support sleeve 1, lead screw nut, connecting plate, lead screw, bearing 2, bearing 3, support sleeve 2, coupling and reducer. The lead screw nut is inserted into the pull rod mounting hole, the connecting plate is installed on the pull rod mounting surface and locked, and the lead screw nut is fixed at the same time. The lead screw is inserted into the lead screw nut to form linear motion. The support sleeve 1 is inserted into the front end shaft of the lead screw, the bearing 1 is inserted into the front end shaft of the lead screw, the bearing 2 is installed on the end shaft of the lead screw, the bearing 3 is installed on the end shaft of the lead screw, the support sleeve 2 is inserted into the end shaft of the lead screw, the coupling is installed on the end shaft of the lead screw, and the reducer is installed on the coupling. The bearing 1, bearing 2 and bearing 3 correspond to the mounting grooves of the housing 1 respectively.

[0017] On this basis, the in-place sensing mechanism includes a sensing plate, a clamping sensor, a sensor connecting bracket, an opening sensor and a sensor connector. The sensing plate is installed in the mounting groove of the pull rod, the clamping sensor and the opening sensor are installed on the sensor connecting bracket, the sensor connecting bracket is installed on an inner mounting surface of the shell, and the sensor connector is installed on an outer mounting surface of the shell.

[0018] On this basis, the power-off manual mechanism includes a dust cover and a mounting shaft, the mounting shaft is sleeved onto the front end shaft of the lead screw, and the dust cover is mounted on the cylinder housing.

[0019] On this basis, the dustproof mechanism includes sealing ring 2, sealing ring 3, connecting block, motor mounting base, motor connector, dust cover, motor protective cover and sealing ring 1. Sealing ring 2 and sealing ring 3 are installed on the mounting shaft, the dust cover is installed on the motor protective cover, the motor connector is installed on the dust cover, and sealing ring 1 is installed on the upper end of the connecting block.

[0020] On this basis, the control system includes a motor, an encoder, a mounting plate and a driver. The motor is mounted on the reducer, the encoder is mounted on the motor, the mounting plate is mounted on the motor protective cover, and the driver is mounted on the mounting plate.

[0021] Compared with the prior art, the beneficial effects of the present invention are: a linear motion mechanism of a screw + reducer + motor is adopted, and a cam follower is added during the linear motion process, so as to ensure that the tool is smoother during the movement process; a control method of a motor + encoder + driver is adopted, so that the device can control the upper swing angle of the clamp arm by controlling, which is more automated than a cylinder; to ensure the stability of the equipment, an in-position sensor is added to the tool, and a dustproof function is added, and a sealing ring is used to realize dustproof for the tool; in the case of power failure, a manual opening function is added, and the tool is manually opened by a hexagonal wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure of the electric clamping cylinder tool of the present invention;

[0023] Figure 2 It is a schematic diagram of the shell structure of the present invention;

[0024] Figure 3 It is a schematic diagram of the structure of the toggle mechanism of the present invention;

[0025] Figure 4 It is an exploded schematic diagram of the toggle mechanism of the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the linear motion mechanism of the present invention;

[0027] Figure 6 It is a schematic diagram of the structure of the in-place sensing mechanism of the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the manual power-off mechanism of the present invention;

[0029] Figure 8 It is the control system mechanism structure of the present invention;

[0030] Fig. 9 is a side sectional view of the electric clamping cylinder of the present invention;

[0031] Fig.10 It is a schematic diagram of the static analysis of the toggle mechanism;

[0032] In the figure: 1, clamping block, 2, clamping arm, 3, elbow mechanism, 3-1, rotating shaft, 3-2, connecting rod 1, 3-3, connecting rod 2, 3-4, pull rod, 3-5, rotating shaft 1, 3-6, bushing 1, 3-7, bushing 2, 3-8, bushing 3, 3-9, rotating shaft 2, 3-10, bushing 4, 3-11, cam follower 1, 3-12, cam follower 2, 3-13, positioning shaft 1, 3-14, positioning shaft 2, 4, linear motion mechanism, 4-1, bearing 1, 4-2, support sleeve 1, 4-3, screw nut, 4-4, connecting plate, 4-5, screw, 4-6, bearing 2, 4-7, bearing 3, 4-8, support sleeve 2, 4-9, coupling, 4 -10, reducer, 5, in-position sensing mechanism, 5-1, induction sheet, 5-2, clamping sensor, 5-3, sensor connection bracket, 5-4, open sensor, 5-5, sensor connector, 6, dustproof mechanism, 6-1, sealing ring 2, 6-2, sealing ring 3, 6-3, connecting block, 6-4, motor mounting seat, 6-5, motor connector, 6-6, dust cover, 6-7, motor protective cover, 6-8, sealing ring 1, 7, power-off manual mechanism, 7-1, dust cover, 7-2, installation shaft, 8, control system, 8-1, motor, 8-2, encoder, 8-3, mounting plate, 8-4, driver, 9, cylinder housing, 9-1, housing 1, 9-2, housing DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0034] The present invention discloses an electric clamping cylinder tool, referring to Figure 1-Figure 9 , including a clamping block 1, a clamping arm 2, a toggle mechanism 3, a linear motion mechanism 4, an in-position sensing mechanism 5, a dustproof mechanism 6, a power-off manual mechanism 7, a control system 8 and a cylinder housing 9. The toggle mechanism 3 is used to provide a clamping force when the clamping tool is clamped, the linear motion mechanism 4 is used to transmit power so that the entire tool can move, the in-position sensing mechanism 5 is used to detect the state of the electric clamping tool, the dustproof mechanism 6 is used to prevent dust from the clamping tool, the power-off manual mechanism 7 is used to seal and manually open after power off, and the control system 8 is used to control the action of the clamping tool.

[0035] The cylinder housing 9 includes a housing 1 9-1 and a housing 2 9-2, which are arranged at the outermost side. The toggle mechanism 3 includes a rotating shaft 3-1, a connecting rod 1 3-2, a connecting rod 2 3-3, a pull rod 3-4, a rotating shaft 1 3-5, a bushing 1 3-6, a bushing 2 3-7, a bushing 3-8, a rotating shaft 2 3-9, a bushing 4 3-10, a cam follower 1 3-11, a cam follower 2 3-12, a positioning shaft 1 3-13 and a positioning shaft 2 3-14. The installation method is: the bushing 2 3-7 and the bushing 3 3-8 are respectively installed in the internal installation holes of the housing 1 9-1 and the housing 2 9-2, the bushing 1 3-6 is installed in the positioning hole of the rotating shaft 3-1, and the bushing 4 3-10 is installed in the pull rod 3- 4 positioning holes, insert the rotating shaft 1 3-5 into the inner hole of the bushing 1 3-6, insert the rotating shaft 2 3-9 into the inner hole of the bushing 4 3-10, and then insert the connecting rod 1 3-2 and the connecting rod 2 3-3 into the two sides of the rotating shaft 1 3-5 and the rotating shaft 2 3-9 respectively, and lock them, position and lock the cam follower 1 3-11 to one side of the pull rod 3-4 through the positioning shaft 1 3-13, position and lock the cam follower 2 3-12 to the other side of the pull rod 3-4 through the positioning shaft 2 3-14, install the elbow mechanism 3 installed above into the inner hole of the bushing 2 3-7 in step 1, and install the cam follower 1 3-11 on the elbow mechanism 3 installed above into the U-shaped groove of the housing 1 9-1.

[0036] refer to Fig.10 The toggle mechanism 3 is mainly used for the electric clamping cylinder, which has a large clamping force when clamping. The calculation formula is:

[0037]

[0038]

[0039] Where: M is the clamping torque, N is the clamping force, L is the distance between the rotating center island and the workpiece, l1 is the length of rod 1, l2 is the length of rod 2, x1 is the distance from the rotation center to the piston rod, φ is the sum of the opening angle of rod 1 and the initial angle, and F is the force output by the linear drive mechanism.

[0040] The linear motion mechanism 4 includes a bearing 1 4-1, a support sleeve 1 4-2, a screw nut 4-3, a connecting plate 4-4, a screw 4-5, a bearing 2 4-6, a bearing 3 4-7, a support sleeve 2 4-8, a coupling 4-9, and a reducer 4-10. The installation method is to install the screw nut 4-3 into the mounting hole of the pull rod 3-4, install the connecting plate 4-4 on the mounting surface of the pull rod 3-4, and lock it, fix the screw nut 4-3, install the screw 4-5 into the screw nut 4-3, so that it forms a linear motion, and install the support sleeve Insert bearing 1 4-2 into the front end shaft of screw 4-5, install bearing 1 4-1 into the front end shaft of screw 4-5, install bearing 2 4-6 into the end shaft of screw 4-5, install bearing 3 4-7 into the end shaft of screw 4-5, insert support sleeve 2 4-8 into the end shaft of screw 4-5, install coupling 4-9 into the end shaft of screw 4-5, install the above installed mechanism into housing 1 9-1, and make bearing 1 4-1, bearing 2 4-6 and bearing 3 4-7 correspond to the installation groove of housing 1 9-1 respectively. Linear motion mechanism 4 is mainly used to transmit power so that the whole tool can move. After being equipped with cam follower 1 3-11 and cam follower 2 3-12, the movement of the whole mechanism is smoother and more stable. The linear motion mechanism 4 is mainly used to transmit power so that the entire tool can move. After being combined with the cam follower 1 3-11 and the cam follower 2 3-12, the movement of the entire mechanism is smoother and more stable.

[0041] The in-place sensing mechanism 5 includes a sensing sheet 5-1, a clamping sensor 5-2, a sensor connecting bracket 5-3, an opening sensor 5-4, and a sensor connector 5-5. The installation method is to install the sensing sheet 5-1 into the installation groove of the pull rod 3-4, install the clamping sensor 5-2 on the sensor connecting bracket 5-3, install the opening sensor 5-4 on the sensor connecting bracket 5-3, install the sensor connecting bracket 5-3 on the inner mounting surface of the shell 9-1, and install the sensor connector 5-5 on the outer mounting surface of the shell 9-1. The in-place sensing mechanism 5 is mainly used to detect the state of the electric clamping tool. At the same time, there is an adjustment slot a where the opening sensor 5-4 is installed to the sensor connecting bracket 5-3, which is mainly used to adjust the opening angle of the electric clamping tool for actual use on site. After the above steps, the shell 9-2 is installed on the shell 9-1 and locked, so that the upper part of the electric clamping tool can be installed.

[0042] The power-off manual mechanism 7 includes a dust cover 7-1 and a mounting shaft 7-2. The mounting shaft 7-2 is installed by inserting it onto the front end shaft of the lead screw 4-5. Before installation, the sealing ring 2 6-1 and the sealing ring 3 6-2 are installed onto the mounting shaft 7-2 to ensure the sealing performance after installation. The dust cover 7-1 is installed onto the cylinder housing 9, and the power is cut off and the manual opening is performed with an inner hexagonal wrench through the inner hexagonal hole at the front end of the lead screw 4-5. The design of the power-off manual mechanism 7 has both a sealing function and a manual opening function after power is cut off.

[0043] The control system 8 includes a motor 8-1, an encoder 8-2, a mounting plate 8-3 and a driver 8-4. The installation method is to install the motor 8-1 on the reducer 4-10, install the encoder 8-2 on the motor 8-1, install the mounting plate 8-3 on the motor protective cover 6-7, install the driver 8-4 on the mounting plate 8-3, install the dust cover 6-6 on the motor protective cover 6-7, and install the motor connector 6-5 on the dust cover 6-6. Compared with other drivers placed in the electrical cabinet, this tool mainly integrates the driver into the electric clamping tool, which can ensure the singleness of the equipment control and is relatively simple to control without complicated electrical routes. The encoder is mainly used to control the opening angle. Compared with pneumatic manual adjustment, this mechanism is more automatic and simple.

[0044] The dustproof mechanism 6 includes a sealing ring 2 6-1, a sealing ring 3 6-2, a connecting block 6-3, a motor mounting seat 6-4, a motor connector 6-5, a dust cover 6-6, a motor protective cover 6-7, and a sealing ring 1 6-8. The installation method is to install the control system 8 to the lower end of the motor mounting seat 6-4, install the sealing ring 1 6-8 to the upper end of the connecting block 6-3, install step 2 to the cylinder housing 9, and lock it.

[0045] At this point, the tool has been installed.

[0046] The dustproof is carried out through the sealing ring and the groove at 9-1 of the shell one is connected with the boss at 9-2 of the shell two, so that the dustproof function of the whole tool is formed, so that it can be applied to various industries.

[0047] The motor 8-1 is used as a power source to drive the screw 4-5 to rotate, so that the screw nut 4-3 forms a linear motion, thereby driving the rotating shaft 3-1 on the elbow lever to rotate. Because the elbow lever can provide a greater clamping force than other mechanisms, compared with the cylinder, the electric clamping tool can save more energy, has less noise, and runs more smoothly.

[0048] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0049] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "screwing", "pad installation" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0050] The above description shows and describes the preferred embodiments of the present invention. As mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the invention concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the present invention, and should be within the scope of protection of the claims attached to the present invention.

Claims

1. An electric clamping cylinder tool, characterized in that: The invention comprises a clamping block (1), a clamping arm (2), a cylinder housing (9), a toggle mechanism (3), a linear motion mechanism (4), an in-position sensing mechanism (5), a dustproof mechanism (6), a power-off manual mechanism (7) and a control system (8). The toggle mechanism (3) is used to provide a clamping force when the clamping tool is clamped. The linear motion mechanism (4) is used to transmit power so that the entire tool can move. The in-position sensing mechanism (5) is used to detect the state of the electric clamping tool. The dustproof mechanism (6) is used to prevent dust from the clamping tool. The power-off manual mechanism (7) is used to seal and manually open after power failure. The control system (8) is used to control the action of the clamping tool.

2. The electric clamping cylinder tool according to claim 1, characterized in that: The cylinder housing (9) comprises housing one (9-1) and housing two (9-2), and housing two (9-2) is mounted on housing one (9-1).

3. The electric clamping cylinder tool according to claim 2, characterized in that: The elbow mechanism (3) comprises a rotating shaft (3-1), a connecting rod 1 (3-2), a connecting rod 2 (3-3), a pull rod (3-4), a rotating shaft 1 (3-5), a bushing 1 (3-6), a bushing 2 (3-7), a bushing 3 (3-8), a rotating shaft 2 (3-9), a bushing 4 (3-10), a cam follower 1 (3-11), a cam follower 2 (3-12), a positioning shaft 1 (3-13) and a positioning shaft 2 (3-14); the two ends of the rotating shaft (3-1) are respectively connected to a housing 1 (9-1) and a housing 2 (9-2); the bushing 1 (3-6) is installed in a positioning hole of the rotating shaft (3-1); the rotating shaft 1 (3-5) is inserted into an inner hole of the bushing 1 (3-6); the pull rod (3-4) connects the connecting rod 1 (3-2) and the connecting rod 2 (3-3); the bushing 4 ( The connecting rod 1 (3-2) and the connecting rod 2 (3-3) are respectively inserted into the two sides of the rotating shaft 1 (3-5) and the rotating shaft 2 (3-9) and locked. The cam follower 1 (3-11) is positioned and locked to one side of the pulling rod (3-4) by the positioning shaft 1 (3-13). The cam follower 2 (3-12) is positioned and locked to the other side of the pulling rod (3-4) by the positioning shaft 2 (3-14). The bushing 2 (3-7) is installed in the internal mounting hole of the shell 1 (9-1). The bushing 3 (3-8) is installed in the internal mounting hole of the shell 2 (9-2). The cam follower 1 (3-11) is installed in the U-shaped groove of the shell 1 (9-1).

4. The electric clamping cylinder tool according to claim 3, characterized in that: The calculation formula of the toggle mechanism (3) is: Where: M is the clamping torque, N is the clamping force, L is the distance between the rotating center island and the workpiece, l1 is the length of rod 1, l2 is the length of rod 2, x1 is the distance from the rotation center to the piston rod, φ is the sum of the opening angle of rod 1 and the initial angle, and F is the force output by the linear drive mechanism.

5. The electric clamping cylinder tool according to claim 4, characterized in that: The linear motion mechanism (4) comprises a bearing 1 (4-1), a support sleeve 1 (4-2), a screw nut (4-3), a connecting plate (4-4), a screw (4-5), a bearing 2 (4-6), a bearing 3 (4-7), a support sleeve 2 (4-8), a coupling (4-9) and a reducer (4-10). The screw nut (4-3) is installed in the mounting hole of the pull rod (3-4), the connecting plate (4-4) is installed on the mounting surface of the pull rod (3-4) and locked, and the screw nut (4-3) is fixed at the same time. The screw (4-5) is installed in the screw nut (4-3) to form a linear motion. The support sleeve 1 ( The bearing 1 (4-1) is inserted into the front end shaft of the screw (4-5), the bearing 2 (4-6) is installed on the end shaft of the screw (4-5), the bearing 3 (4-7) is installed on the end shaft of the screw (4-5), the support sleeve 2 (4-8) is inserted into the end shaft of the screw (4-5), the coupling (4-9) is installed on the end shaft of the screw (4-5), the reducer (4-10) is installed on the coupling (4-9), and the bearing 1 (4-1), the bearing 2 (4-6) and the bearing 3 (4-7) are respectively corresponding to the installation grooves of the housing 1 (9-1).

6. The electric clamping cylinder tool according to claim 5, characterized in that: The in-position sensing mechanism (5) comprises a sensing sheet (5-1), a clamping sensor (5-2), a sensor connecting bracket (5-3), an opening sensor (5-4) and a sensor connector (5-5); the sensing sheet (5-1) is installed in a mounting groove of a pull rod (3-4); the clamping sensor (5-2) and the opening sensor (5-4) are installed on the sensor connecting bracket (5-3); the sensor connecting bracket (5-3) is installed on an inner mounting surface of a housing (9-1); and the sensor connector (5-5) is installed on an outer mounting surface of a housing (9-1).

7. The electric clamping cylinder tool according to claim 6, characterized in that: The power-off manual mechanism (7) comprises a dust cover (7-1) and a mounting shaft (7-2), wherein the mounting shaft (7-2) is sleeved onto the front end shaft of the lead screw (4-5), and the dust cover (7-1) is mounted on the cylinder housing (9).

8. The electric clamping cylinder tool according to claim 7, characterized in that: The dustproof mechanism (6) comprises a second sealing ring (6-1), a third sealing ring (6-2), a connecting block (6-3), a motor mounting seat (6-4), a motor connector (6-5), a dust cover (6-6), a motor protective cover (6-7) and a first sealing ring (6-8); the second sealing ring (6-1) and the third sealing ring (6-2) are installed on the mounting shaft (7-2); the dust cover (6-6) is installed on the motor protective cover (6-7); the motor connector (6-5) is installed on the dust cover (6-6); and the first sealing ring (6-8) is installed on the upper end of the connecting block (6-3).

9. The electric clamping cylinder tool according to claim 8, characterized in that: The control system (8) comprises a motor (8-1), an encoder (8-2), a mounting plate (8-3) and a driver (8-4); the motor (8-1) is mounted on a reducer (4-10); the encoder (8-2) is mounted on the motor (8-1); the mounting plate (8-3) is mounted on a motor protective cover (6-7); and the driver (8-4) is mounted on the mounting plate (8-3).

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