CN211305355U - Light-load type cylinder with overturning function - Google Patents

Abstract

The utility model discloses a light-duty type upset function cylinder, concretely relates to automotive production field, including casing and cylinder body, the inside of cylinder body is provided with the piston rod, the bottom mounting of piston rod is provided with down the buffer block, the fixed piston that is provided with in upper end of buffer block down, the fixed forked piece that is provided with in upper end of piston rod, forked piece has the connecting block through forked piece round pin hub connection, the one end of connecting block has the axis of rotation through the pin joint, the lateral wall of casing is passed to the one end of axis of rotation to be connected with the arm lock through fixing bolt, the outer end fixed mounting of casing has the sensor, the input of sensor is connected with on the sensor and responds to the piece under. The utility model discloses small, the precision is high, has self-locking function, effectively prevents to cut off the power supply and the frock under the gas cut-off condition is inefficacy, and light in weight reduces and interferes, and effectual space-saving saves space for the site work environment.

Description

Light-load type cylinder with overturning function

Technical Field

The utility model relates to an automotive production technical field, more specifically say, the utility model relates to a light load type upset function cylinder.

Background

The welding line of the automobile body, which is one of four production processes in automobile production, is a development process from low efficiency to high efficiency, from industrial 1.0 to industrial 4.0, and from single-vehicle single-line to multi-vehicle collinear flexible production line. The automobile industry and developed countries in China have certain gaps in the whole design planning concept and the processing and manufacturing level. In order to improve the quality and capacity of domestic automobiles, more strict requirements on the production process are required, and higher requirements on tool fixtures in automobile production are also required.

The clamping device commonly used in the welding fixture is used for clamping automobile sheet metal parts and assembly parts through the clamping device to convey and fix the automobile body parts, and then the next welding operation of the automobile body parts is carried out. The welding precision, the quality and the efficiency of the welding workpiece are ensured by improving the automation degree.

The current clamping device for the factory welding line of the automobile with the largest use amount has the following defects:

(1) the size is large, and the overall shape space size of the clamp and the gripper is increased;

(2) the precision is poor, most of the common piston type linear cylinders are fastened by external mechanisms, and the precision is difficult to guarantee;

(3) the self-locking can not be realized, and the workpiece is separated from the clamp or the gripper tool falls off or loses deformation under the accident condition of power failure and gas failure;

(4) the weight is large, the weight of the clamp and the weight of the gripper are increased no matter the self weight of the clamp or the installation of accessories, and the load capacity is reduced;

(5) the interference is easy, the size and the clamping points of the clamp product are distributed, and the interference problem caused by the welding spot position, the workpiece taking and placing and the tool matching is easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides a light load type upset function cylinder, the utility model aims to solve the technical problem that: how to improve the practicality of car production welding jig.

In order to achieve the above object, the utility model provides a following technical scheme: a light-load cylinder with a turnover function comprises a shell and a cylinder body, wherein the shell is fixedly connected with the cylinder body, a lower cover is arranged at the bottom end of the cylinder body, an upper cover is fixedly arranged at the upper end of the cylinder body, a piston rod is arranged in the cylinder body, the bottom end of the piston rod is arranged in a cavity in the cylinder body, a lower buffer block is fixedly arranged at the bottom end of the piston rod, a piston is fixedly arranged at the upper end of the lower buffer block, the upper end of the piston rod is arranged in the shell, a fork-shaped part is fixedly arranged at the upper end of the piston rod and is connected with a connecting block through a fork-shaped part pin shaft, one end of the connecting block is connected with a rotating shaft through a pin, one end of the rotating shaft penetrates through the side wall of the shell and is connected with a clamping arm through a fixing bolt, a, and the upper induction block of the sensor and the lower induction block of the sensor are both arranged in the shell, a reinforcing steel bar and a reinforcing steel sheet are fixedly arranged in the shell, a return pin is arranged at the upper end of the shell, and the return pin is arranged above the fork-shaped piece.

The utility model provides a light-load type turnover function cylinder, when using, the gas pocket through upper cover and lower cover is admitted air and is exhausted and make the piston reciprocating motion from top to bottom, the piston drives piston rod and forked piece reciprocating motion from top to bottom through the connection of lower buffer block, when the forked piece reciprocating motion from top to bottom, can accomplish the left and right rocking of axis of rotation through the connecting block, realize the function that the clamp of outside arm lock is opened; the external clamping arm can generate a large clamping force by using relatively small working air pressure by utilizing a toggle rod design principle, under the clamping state of the clamping arm when the cylinder with the overturning function works, if the cylinder is in a gas cut-off state or a power failure state, namely when the system is in a pressure loss state, the whole system cannot move automatically under the action of friction force generated by extrusion of a reinforcing steel sheet and a rotating shaft by a reinforcing steel bar and needle roller bearings at two ends of a fork-shaped element pin shaft, so that the self-locking of the system is realized, the clamping arm cannot be unlocked by self when being in the clamping state; when the clamping device clamps, the system is self-locked, and under the condition of gas or power failure, the connecting block and the rotating shaft can be separated from a locking position by pressing the return pin, so that the unlocking function is realized. The sensor arranged on the turnover function cylinder can transmit two position states of clamping and opening of the clamping arm to the whole control system in an electric signal mode when the turnover function cylinder works, the sensing point of the sensing block on the sensor is contacted with the sensing point of the self-contained fork piece when the clamping arm is clamped, the whole control system receives a clamping signal through the sensor, and the sensing point of the sensing block under the sensor is contacted with the sensing point of the self-contained fork piece when the clamping arm is opened, and the sensor system receives an opening signal; when the cylinder with the overturning function moves, the clamping arm is about to be opened to the maximum angle or is clamped tightly, the upper buffer block and the lower buffer block enter the buffer sealing rings of the upper cover and the lower cover respectively, exhaust can be discharged only through one air hole of the end face, the exhaust speed is greatly reduced, the running speed of the piston is reduced, the piston does not collide with the upper cover and the lower cover hard, the buffering effect is achieved, and the service life of the cylinder with the overturning function is prolonged.

In a preferred embodiment, the cylinder body is internally provided with an upper buffer block, the upper cover and the lower cover are internally provided with buffer sealing rings, and the upper cover and the lower cover are placed to generate hard collision.

In a preferred embodiment, the upper cover and the lower cover are both provided with air holes, the upper buffer block is matched with the buffer sealing ring on the upper cover, and the lower buffer block is matched with the buffer sealing ring on the lower cover, so that the service life of the turnover function cylinder is prolonged.

In a preferred embodiment, one side of lower cover and upper cover all is provided with the buffering governing valve, and the operator can adjust the speed of buffering according to the demand, prolongs the life of whole upset function cylinder and presss from both sides.

In a preferred embodiment, the fork-shaped part is provided with sensing points which are mutually sensed with the sensing block on the sensor and the sensing block under the sensor, so that the opening or clamping state of the clamping arm can be sensed conveniently by using the sensing points and the sensing blocks.

In a preferred embodiment, the reinforcing steel bar is arranged on one side of the pin shaft of the fork-shaped part, the reinforcing steel sheet is fixedly arranged on one side of the rotating shaft, and self-locking of the system is realized by the reinforcing steel bar and the reinforcing steel sheet.

In a preferred embodiment, the piston and the cylinder are both in an oval shape, and the shell is a high-strength aluminum alloy closed shell, so that the rotation in the working process is prevented, and the working stability of the system and the cleanliness of the interior of the system are ensured.

In a preferred embodiment, the fork-shaped piece and the piston rod are fixed through threads and a positioning pin, and the upper cover and the lower cover are fixed through a long bolt, so that the installation and the fixation of the system are facilitated.

Compared with the prior art, the utility model discloses a technological effect and advantage:

1. the size is small, and the overall shape space size of the clamp and the gripper is reduced;

2. the precision is high, the clamping and positioning precision of the tool on the workpiece is ensured, and the precision of the welding process is greatly ensured;

3. the self-locking function effectively prevents the failure of the tool under the conditions of power failure and gas failure;

4. the weight is light; the overall weight of the tool clamp is reduced, and the load is effectively reduced due to light weight;

5. interference is reduced, and the space is effectively saved for the field working environment.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is an enlarged schematic view of a structure shown in fig. 1 according to the present invention.

Fig. 4 is an enlarged schematic view of the structure at B in fig. 2 according to the present invention.

The reference signs are: the device comprises a shell 1, a cylinder 2, a lower cover 3, an upper cover 4, a piston rod 5, a lower buffer block 6, a piston 7, a fork 8, a fork 9 pin shaft, a connecting block 10, a rotating shaft 11, a clamping arm 12, a sensor 13, an upper sensor sensing block 14, a lower sensor sensing block 15, a reinforcing steel bar 16, a reinforcing steel sheet 17, a return pin 18, an upper buffer block 19, a buffer regulating valve 20 and a long bolt 21.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The light-load type cylinder with the overturning function shown in the figures 1-4 comprises a shell 1 and a cylinder body 2, wherein the shell 1 is fixedly connected with the cylinder body 2, a lower cover 3 is arranged at the bottom end of the cylinder body 2, an upper cover 4 is fixedly arranged at the upper end of the cylinder body 2, a piston rod 5 is arranged inside the cylinder body 2, the bottom end of the piston rod 5 is arranged in a cavity inside the cylinder body 2, a lower buffer block 6 is fixedly arranged at the bottom end of the piston rod 5, a piston 7 is fixedly arranged at the upper end of the lower buffer block 6, the upper end of the piston rod 5 is arranged inside the shell 1, a fork-shaped part 8 is fixedly arranged at the upper end of the piston rod 5, the fork-shaped part 8 is connected with a connecting block 10 through a fork-shaped part pin shaft 9, one end of the connecting block 10 is connected with a rotating shaft 11 through a pin, one, outer end fixed mounting of casing 1 has sensor 13, the input of sensor 13 is connected with responds to piece 14 and sensor down and responds to piece 15 on the sensor, just respond to piece 14 and sensor down and respond to piece 15 and all set up the inside at casing 1 on the sensor, casing 1's inside is fixed to be provided with and strengthens billet 16 and strengthen steel sheet 17, casing 1's upper end is provided with return round pin 18, return round pin 18 sets up the top at forked piece 8.

Further, the inside of cylinder body 2 is provided with buffer block 19, the inside of upper cover 4 and lower cover 3 all is provided with the buffering sealing washer.

Further, all be provided with the gas pocket on upper cover 4 and the lower cover 3, go up the buffer block 19 and the buffering sealing washer phase-match on the upper cover 4, buffer block 6 and the buffering sealing washer phase-match on the lower cover 3 down.

Further, one side of the lower cover 3 and one side of the upper cover 4 are both provided with a buffer regulating valve 20.

Furthermore, the fork 8 is provided with a sensing point which is mutually sensed with the upper sensor sensing block 14 and the lower sensor sensing block 15.

Further, the reinforcing steel bar 16 is arranged on one side of the fork pin 9, and the reinforcing steel sheet 17 is fixedly arranged on one side of the rotating shaft 11.

Further, the piston 7 and the cylinder body 2 are both in an oval shape, and the shell 1 is a high-strength aluminum alloy closed shell.

Further, the fork 8 and the piston rod 5 are fixed through threads and a positioning pin, and the upper cover 4 and the lower cover 3 are fixed through a long bolt 21.

The implementation mode is specifically as follows: the piston 7 reciprocates up and down by air inlet and exhaust of air holes of the upper cover 4 and the lower cover 3, the piston 7 drives the piston rod 5 and the fork-shaped piece 8 to reciprocate up and down by the connection of the lower buffer block 6, and when the fork-shaped piece 8 reciprocates up and down, the left and right swinging of the rotating shaft 11 can be completed by the connecting block 10, so that the function of clamping and opening the external clamping arm 12 is realized; the external clamping arm 12 can generate a large clamping force by using relatively small working air pressure by utilizing a toggle rod design principle, under the clamping state of the clamping arm 12 when the cylinder with the overturning function works, if the cylinder is in a gas cut-off state or in a power failure state, namely when the system is in a voltage loss state, the whole system cannot move automatically under the action of friction force generated by extruding the reinforcing steel sheet 17 and the rotating shaft 11 by the reinforcing steel bar 16 and the needle roller bearings at two ends of the fork-shaped piece pin shaft 9, the self-locking of the system is realized, the clamping arm 12 can not be unlocked by self when being in the clamping state, and; when the clamping device clamps, the system is self-locked, and under the condition of gas or power failure, the connecting block 10 and the rotating shaft 11 can be separated from the locking position by pressing the return pin 18, so that the unlocking function is realized. A sensor 13 arranged on the turnover function cylinder can transmit two position states of clamping and opening of the clamping arm to the whole control system in an electric signal mode when the turnover function cylinder works, a sensing point on the fork-shaped part 8 is contacted with a sensing point of a sensing block 14 on the sensor when the clamping arm 12 is clamped, the whole control system receives a clamping signal through the sensor 13, the sensing point on the fork-shaped part 8 is contacted with a sensing point of a sensing block 15 under the sensor when the clamping arm 12 is opened, and an opening signal is received through the sensor system; in the motion process of the turnover function cylinder, the clamping arm 12 is about to be opened to the maximum angle or is about to be clamped, the upper buffer block 19 and the lower buffer block 6 enter the buffer sealing rings of the upper cover 4 and the lower cover 3 respectively, exhaust can be discharged only through one air hole on the end surface, the exhaust speed is greatly reduced, the running speed of the piston 7 is reduced, the piston 7 does not generate hard collision with the upper cover 4 and the lower cover 3, the buffer function is achieved, and the service life of the turnover function cylinder is prolonged.

The utility model discloses the theory of operation: the device has the advantages of small volume, high precision, self-locking function, light weight, and capability of effectively preventing the failure of the tool under the conditions of power failure and gas failure; the overall weight of the tool clamp is reduced, the load is effectively reduced due to light weight, the interference is reduced, and the space is effectively saved for the field working environment.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a light-duty type upset function cylinder, includes casing (1) and cylinder body (2), casing (1) and cylinder body (2) fixed connection, its characterized in that: the bottom end of the cylinder body (2) is provided with a lower cover (3), the upper end of the cylinder body (2) is fixedly provided with an upper cover (4), the inside of the cylinder body (2) is provided with a piston rod (5), the bottom end of the piston rod (5) is arranged in a cavity inside the cylinder body (2), the bottom end of the piston rod (5) is fixedly provided with a lower buffer block (6), the upper end of the lower buffer block (6) is fixedly provided with a piston (7), the upper end of the piston rod (5) is arranged inside the shell (1), the upper end of the piston rod (5) is fixedly provided with a fork-shaped part (8), the fork-shaped part (8) is connected with a connecting block (10) through a fork pin shaft (9), one end of the connecting block (10) is connected with a rotating shaft (11) through a pin, one end of the rotating shaft (11) penetrates through the side wall of, the outer end fixed mounting of casing (1) has sensor (13), the input of sensor (13) is connected with responds to piece (14) and sensor lower response piece (15) on the sensor, just respond to piece (14) and sensor lower response piece (15) and all set up the inside at casing (1) on the sensor, the inside of casing (1) is fixed to be provided with strengthens billet (16) and strengthens steel sheet (17), the upper end of casing (1) is provided with return round pin (18), return round pin (18) set up the top at forked piece (8).

2. The light-load type cylinder with a turnover function as claimed in claim 1, wherein: the inside of cylinder body (2) is provided with buffer block (19), the inside of upper cover (4) and lower cover (3) all is provided with the buffering sealing washer.

3. The light-load type cylinder with a turnover function as claimed in claim 2, wherein: the air holes are formed in the upper cover (4) and the lower cover (3), the upper buffer block (19) is matched with the buffer sealing ring on the upper cover (4), and the lower buffer block (6) is matched with the buffer sealing ring on the lower cover (3).

4. The light-load type cylinder with a turnover function as claimed in claim 1, wherein: and one sides of the lower cover (3) and the upper cover (4) are provided with buffer regulating valves (20).

5. The light-load type cylinder with a turnover function as claimed in claim 1, wherein: and induction points which are mutually induced with the upper induction block (14) and the lower induction block (15) of the sensor are arranged on the fork-shaped piece (8).

6. The light-load type cylinder with a turnover function as claimed in claim 1, wherein: the reinforcing steel bars (16) are arranged on one side of the forked piece pin shaft (9), and the reinforcing steel sheets (17) are fixedly arranged on one side of the rotating shaft (11).

7. The light-load type cylinder with a turnover function as claimed in claim 1, wherein: piston (7) and cylinder body (2) are oval setting, casing (1) is high strength aluminum alloy closed housing.

8. The light-load type cylinder with a turnover function as claimed in claim 1, wherein: the fork-shaped piece (8) and the piston rod (5) are fixed through threads and a positioning pin, and the upper cover (4) and the lower cover (3) are fixed through a long bolt (21).

Images