CN117020522A - Horizontal positioning mechanism for seal head - Google Patents

Abstract

The horizontal seal head positioning mechanism is provided with a positioning unit 2, a rotating mechanism 3 and an elastic lifting mechanism 4. The elastic lifting mechanism 4 can bear the whole weight of the seal head main body, stably lift the seal head main body, and can enable the seal head main body to have a certain adjusting range in the horizontal direction by utilizing the function of elastic lifting in the vertical direction. The height of the outer edge of the seal head main body can be accurately adjusted by matching with the pull-down function of the positioning unit 2, so that the seal head main body can be accurately adjusted to be in a horizontal state; simultaneously, under the cooperation of rotary mechanism 3, a plurality of positioning units 2 can be organic connect in an organic whole, synchronous pull-down or rise to can be fast accurately pull the outer edge everywhere of head main part to same height, can make the head main part be in the level effectively, in order to ensure the accurate cooperation of head main part and head flange, prepare fully for follow-up high quality welding.

Description

Horizontal positioning mechanism for seal head

Technical Field

The application relates to the technical field of welding, in particular to a horizontal positioning mechanism for an end socket.

Background

When the end socket on the cement stirring tank is processed, the annular end socket connecting flange and the end socket main body are required to be welded together, so that the end socket connecting flange is connected with a driving motor of the cement stirring tank during installation. In actual processing, the sealing head connecting flange is required to be horizontally fixed, so that the spigot 710 of the sealing head connecting flange faces upwards; then hoisting the approximately disc-shaped seal head main body above the seal head connecting flange, vertically splicing and matching the seal head mounting port 720 of the seal head main body with the spigot 710, and keeping the opening of the seal head main body upwards so as to weld other parts such as reinforcing ribs and the like on the inner wall of the seal head main body; after being matched, the two parts form an annular gap; then, spot welding and fixing are carried out at the annular gap; and finally welding the two parts together. Because the driving motor is required to be installed on the end socket connecting flange, if the flatness difference is large, the stability of the tank body of the stirring tank is poor in rotation, and therefore, the end socket connecting flange and the end socket main body are kept horizontally consistent during installation.

However, in actual production, it was found that since the diameter of the head main body is generally 1500 to 2000 mm, the weight and the area in the horizontal direction thereof are large, and the diameters of the head mounting port 720 and the spigot 710 are similar, the diameter and the circumference of the annular gap formed by the fitting of the head mounting port 720 and the spigot 710 are also large. This makes it easy for the head body to tilt relative to the horizontal plane where the head connecting flange is located, as shown in fig. 21 and 22, in the assembly process, and the two are not consistent in level, i.e. the flatness of the two is not good. Once the seal head main body is inclined relative to the seal head connecting flange, the annular gap between the seal head mounting port 720 and the spigot 710 is uneven, as shown in fig. 22, some of the gap positions are large, and some of the gap positions are small. Under the condition of the matching, the welding quality between the two parts can be seriously reduced, so that the strength and the tightness of the seal head are difficult to meet the design requirements.

However, since the volume and the weight of the head body are large, only hoisting equipment is needed for hoisting, but it is difficult to keep the head body horizontal during the hoisting process. After assembly, the hoisting equipment is manually matched with the hoisting equipment for long-time adjustment, and the hoisting equipment are often required to be separated and then reassembled and repeated for many times. The sealing head main body and the sealing head connecting flange are assembled with the problems of high operation difficulty, time and labor waste and low assembly qualification rate.

Disclosure of Invention

In order to solve the problems, the application aims to provide a horizontal positioning mechanism for an end socket, which is matched with hoisting equipment without manual adjustment, can efficiently and accurately adjust the position of the end socket main body, and enables the heights of the outer edges of the end socket main body to be equal, thereby achieving the effect of keeping the end socket main body and an end socket connecting flange to be horizontal and consistent, enabling the annular gap between the end socket main body and the end socket connecting flange to be uniform, and further improving the welding precision and strength of the end socket.

The technical scheme adopted for solving the technical problems is as follows: head horizontal positioning mechanism, it has unable adjustment base, its characterized in that: the top of the fixed base is provided with a rotating mechanism, the periphery of the rotating mechanism is provided with three positioning units, the rotating mechanism consists of a rotating sleeve and a supporting cylinder, the supporting cylinder is connected with the fixed base, the periphery of the supporting cylinder is movably provided with the rotating sleeve, and the periphery of the rotating sleeve is radially provided with three rotating sleeve shafts; the fixed base is provided with a three-jaw chuck which is positioned in the supporting cylinder;

each positioning unit is formed by connecting a radial supporting seat, a sliding table mechanism and a transmission mechanism, one end of the radial supporting seat is connected with a fixed base, at least one first linear guide rail is arranged in the radial supporting seat, a sliding rail of the first linear guide rail is connected with the radial supporting seat, and the sliding table mechanism is arranged on a sliding block of the first linear guide rail; the sliding table mechanism is formed by connecting a sliding table, a radial cylinder, a vertical moving sliding plate, a vertical support, a pressing block and a second linear guide rail, wherein the sliding table is connected with the sliding block of the first linear guide rail; the radial support seat is provided with a transmission mechanism, the transmission mechanism is formed by connecting a spline shaft, a first connecting rod, a first support seat and a second support seat, the spline shaft is provided with a spline sleeve, the first support seat is arranged on the periphery of the spline sleeve, the spline sleeve can only rotate relative to the first support seat, the spline shaft can rotate relative to the first support seat and can also axially move relative to the first support seat, the outer end of the spline shaft is provided with the second support seat, the spline shaft can only rotate relative to the second support seat, the second support seat is connected with a sliding table, the first support seat is connected with the radial support seat, the outer end of the spline shaft is fixedly provided with a first swing arm, the first swing arm is hinged with one end of the first connecting rod, the other end of the first connecting rod is hinged with a vertical moving sliding plate, the spline sleeve is fixedly provided with a rocker arm, the spline shaft can axially move relative to the rocker arm, the rocker arm is driven to rotate, the rocker arm is radially provided with a rocker arm shaft, the rotating sleeve shaft is movably provided with a movable connecting rod, one end of the second connecting rod is hinged with a second swing joint through a first hinge shaft, the other end of the second connecting rod is hinged with a second swing joint through a second hinge shaft, the first hinge shaft is vertical to the second hinge shaft, and the second swing joint shaft is vertical to the rocker shaft;

three elastic lifting mechanisms are arranged on the fixed base and are uniformly distributed on the periphery of the rotating mechanism.

The bottom of the supporting cylinder is provided with a supporting cylinder method cover, the supporting cylinder method cover is provided with mounting grooves, the number of the mounting grooves is the same as that of the radial supporting seats, and the inner ends of the radial supporting seats are matched with the mounting grooves.

The periphery of the middle part of the supporting cylinder is provided with a supporting cylinder annular groove.

A first spline shaft bearing assembly is arranged in the second supporting seat; the first spline shaft bearing assembly consists of a first gland, a first bearing and a pressing sleeve, a second mounting hole is formed in a second supporting seat, a second limiting ring is arranged in the second mounting hole, at least one first bearing is mounted in the second mounting hole, the outer ring of the first bearing is matched with the second limiting ring, the inner ring of the first bearing is matched with the spline shaft, the first gland is mounted on the inner side of the second mounting hole, a flange plate of the first gland is connected with the second supporting seat, and the inner end of the first gland is matched with the outer ring of the first bearing.

The spline shaft is characterized in that a compression sleeve is fixedly arranged on the periphery of the spline shaft and matched with the inner ring of the first bearing, and the compression sleeve and the first gland are positioned on two sides of the first bearing.

The second spline shaft bearing assembly is arranged in the first supporting seat, the second spline shaft bearing assembly comprises a second gland, a third gland and a second bearing, a first mounting hole is formed in the first supporting seat, a first limiting ring is arranged in the first mounting hole, a second bearing is arranged in the first mounting hole, an outer ring of the second bearing is matched with the first limiting ring, a limiting protruding edge is arranged in the middle of the spline housing, the second gland is arranged at the outer end of the spline housing, the second gland and the limiting protruding edge form an annular groove, and the annular groove is matched with an inner ring of the second bearing; the outer end of the first supporting seat is provided with a third gland which is matched with the outer ring of the second bearing, and the second gland is positioned in the third gland.

The elastic lifting mechanism consists of a supporting sleeve, a spring, a guide shaft, a universal ball and a guide shaft limiting cover, wherein the spring and the guide shaft are sequentially installed in the supporting sleeve from bottom to top, the guide shaft limiting cover is installed at the upper end of the supporting sleeve, and the universal ball is installed outside the guide shaft limiting cover in a penetrating mode at the upper end of the guide shaft.

The periphery movable mounting swivel mount assembly of unable adjustment base, swivel mount assembly comprises rotating cover and deflector, and three deflector constitutes a triangle-shaped frame, rotates the inscribed circle that the cover is this triangle-shaped frame, respectively offers a bar guiding hole on every deflector, respectively installs a directional post in every bar guiding hole, is equipped with the connecting piece on the directional post, every connecting piece and slip table bottom fixed connection.

And an included angle between the first hinge shaft and the second hinge shaft is larger than or smaller than the first hinge shaft.

The upper part of the supporting cylinder is provided with a rotary sleeve pressing plate for limiting the rotary sleeve.

The application has the positive effects that: the seal head horizontal positioning mechanism is provided with a positioning unit 2, a rotating mechanism 3 and an elastic lifting mechanism 4. The elastic lifting mechanism 4 can bear the whole weight of the seal head main body, stably lift the seal head main body, and can enable the seal head main body to have a certain adjusting range in the horizontal direction by utilizing the function of elastic lifting in the vertical direction. The height of the outer edge of the seal head main body can be accurately adjusted by matching with the pull-down function of the positioning unit 2, so that the seal head main body can be accurately adjusted to be in a horizontal state; simultaneously, under the cooperation of rotary mechanism 3, a plurality of positioning units 2 can be organic connect in an organic whole, synchronous pull-down or rise to can be fast accurately pull the outer edge everywhere of head main part to same height, can make the head main part be in the level effectively, in order to ensure the accurate cooperation of head main part and head flange, prepare fully for follow-up high quality welding.

Drawings

FIG. 1 is a schematic perspective view of a horizontal positioning mechanism for an end socket of the present application;

fig. 2 is a schematic view of a vertical structure of another angle of the horizontal positioning mechanism for the seal head, which shows the positioning state of the seal head and the seal head connecting flange;

FIG. 3 is a front view of the positioning unit;

FIG. 4 is a left side view of FIG. 3;

FIG. 5 is a schematic perspective view of FIG. 3;

FIG. 6 is a schematic perspective view of another angle of FIG. 3;

FIG. 7 is a schematic perspective view of a second link;

FIG. 8 is a schematic diagram of the front view of the transmission mechanism;

FIG. 9 is a schematic cross-sectional view of A-A of FIG. 8;

FIG. 10 is a schematic perspective view of FIG. 8;

FIG. 11 is a right side schematic view of FIG. 8;

FIG. 12 is a schematic perspective view of a three-jaw chuck;

FIG. 13 is a schematic perspective view of a rotation mechanism;

FIG. 14 is a schematic cross-sectional view of the elastic lifting mechanism;

fig. 15 is a schematic front view of the rotary frame mounted to the stationary base 1;

fig. 16 is a schematic perspective view of fig. 15;

fig. 17 is a schematic perspective view of the rotating frame;

FIG. 18 is a schematic perspective view of a seal head body and a seal head connecting flange ready for mating;

FIG. 19 is a cross-sectional view of the closure body after accurate engagement with the closure attachment flange;

FIG. 20 is an enlarged partial schematic view of the structure of FIG. 19;

FIG. 21 is a cross-sectional view of the closure body after angled engagement with respect to the closure attachment flange;

fig. 22 is a partially enlarged structural schematic view of III of fig. 21.

Drawings

1 fixed base

2 positioning unit

20 radial support 200 first linear guide

Connecting piece for second linear guide rail 217 orientation column 218 of pressing block 216 of vertical support 215 of vertical moving slide plate 214 and vertical cylinder 213 of radial cylinder 212 of sliding table 211 of 21 sliding table mechanism 210

First swing arm 2201 spline housing 2202 limit flange 2203 screw hole 2204 positioning cover 221 first link 222 first support seat 2220 first limit ring 223 second support seat 2230 second limit ring 2231 second limit ring 224 first hinge shaft 225 second link 226 link rod hinge 227 second swing arm 228 second hinge shaft 229 rocker arm 2290 rocker arm shaft of spline shaft 2200 of 22 drive mechanism 220

23 first spline shaft bearing Assembly 230 first gland 231 first bearing 232 compression sleeve

24 second spline shaft bearing assembly 240 second gland 241 third gland 242 second bearing

3 rotation mechanism 30 rotation sleeve 300 rotation sleeve shaft 31 support cylinder 310 support cylinder method cover 311 mounting cylinder 312 support cylinder annular groove 32 rotation sleeve pressing plate

4 elastic lifting mechanism 40 supporting mechanism 41 spring 42 guiding shaft 43 universal ball 44 guiding shaft limiting cover

5 three-jaw chuck

Strip-shaped guide hole 61 rotary sleeve 62 and guide plate 63 positioning sleeve of 6 rotary frame assembly 60

7 head 71 head flange 710 tang 72 head main part 720 head installation 721 outer edge

Description of the embodiments

The horizontal positioning mechanism of the seal head comprises a fixed base 1. As shown in fig. 1, a rotation mechanism 3 is mounted on top of a fixed base 1. Three positioning units 2 are provided on the outer periphery of the rotation mechanism 3. The three positioning units 2 are radially arranged and can be uniformly distributed on the periphery of the rotating mechanism 3 in a round shape. As shown in fig. 13, the rotation mechanism 3 may be constituted by a rotation sleeve 30, a support cylinder 31, and a rotation sleeve pressing plate 32. The bottom of the supporting cylinder 31 is fixedly connected with the fixed base 1. The outer circumference of the supporting cylinder 31 is movably provided with a rotating sleeve 30. The rotating sleeve 30 can rotate relative to the support cylinder 31, and lubrication can be provided therebetween. Three rotating sleeve shafts 300 are radially provided on the outer circumference of the rotating sleeve 30. As shown in fig. 1, the three-jaw chuck 5 is mounted on the stationary base 1, and the three-jaw chuck 5 is located in the support cylinder 31. The three jaws of the three-jaw chuck 5 can be horizontally fixed by the annular end socket connecting flange 71. The number of the positioning units 2 can be four or five, and is determined according to the size of the end socket to be processed and the requirements of customers. The three-jaw chuck 5 is a three-jaw self-centering chuck.

The vertical cylinder 212 is selected as a power device to realize the adjustment of the head main body 72 to be horizontal and provide the pressure for the vertical matching of the head main body 72 and the head connecting flange 71, because the cylinder has strong power, low price, strong environment adaptation capability, long service life and simple operation, the application is beneficial to reducing the manufacturing cost and prolonging the service life, and is suitable for continuous production operation in a large-scale production system. However, the movement accuracy of the cylinder is not high, and the stroke thereof is difficult to control precisely, which is generally not considered as a power device for performing precise movement in the art. Therefore, the application combines the rotation mechanism 3 and the positioning unit 2 into a whole, on one hand, the vertical cylinder 212 fully plays the self-advantages; on the other hand, the rotation mechanism 3 coordinates the positioning units 2, so that the movements of all the vertically moving slide plates 213 can be kept highly uniform, thereby providing sufficient power and ensuring sufficient accuracy. Meanwhile, the rotating mechanism 3 is positioned in the plurality of positioning units 2, clings to the three-jaw chuck 5, is not easy to be disturbed by the external environment, so that the structure of the seal head horizontal positioning mechanism is more compact, the operation is more stable, and the service life is longer.

As shown in fig. 5, each positioning unit 2 is constituted by connecting a radial support base 20, a slide table mechanism 21, and a transmission mechanism 22. One end of the radial supporting seat 20 is fixedly connected with the fixed base 1. At least one first linear guide rail 200 is mounted within the radial support base 20. The slide rail of the first linear guide rail 200 is connected with the radial support base 20, and a sliding table mechanism 21 is mounted on the sliding block of the first linear guide rail 200. The sliding table mechanism 21 is formed by connecting a sliding table 210, a radial cylinder 211, a vertical cylinder 212, a vertical moving sliding plate 213, a vertical support 214, a pressing block 215 and a second linear guide rail 216. The sliding table 210 is connected with the sliding block of the first linear guide rail 200, and a radial cylinder 211 is installed at the side of the radial support base 20. The piston rod of the radial cylinder 211 is connected with the sliding table 210, and can drive the sliding table 210 to reciprocate linearly along the radial direction. The sliding table 210 is provided with a vertical support 214 and a vertical cylinder 212. A second linear guide rail 216 is vertically installed in the vertical support 214, a sliding rail of the second linear guide rail 216 is connected with the vertical support 214, and a vertical moving sliding plate 213 is installed on a sliding block of the second linear guide rail 216. The inner side of the vertical movement sliding plate 213 is provided with a pressing block 215. The piston rod of the vertical cylinder 212 is connected with the vertical movement sliding plate 213, and the vertical cylinder 212 can drive the vertical movement sliding plate 213 to move vertically.

As shown in fig. 6, a transmission mechanism 22 is mounted on the radial support base 20. The transmission mechanism 22 is formed by connecting a spline shaft 220, a first connecting rod 221, a first supporting seat 222 and a second supporting seat 223. As shown in fig. 8 and 9, the spline housing 2201 is mounted on the spline shaft 220, the first support seat 222 is mounted on the outer periphery of the spline housing 2201, and the spline housing 2201 can only rotate relative to the first support seat 222, so that the spline shaft 220 can rotate relative to the first support seat 222 and can also axially move relative to the first support seat 222. The second support seat 223 is installed at the outer end of the spline shaft 220, and the spline shaft 220 can only rotate relative to the second support seat 223. As shown in fig. 6, the second support seat 223 is fixedly connected with the sliding table 210, and the sliding table 210 can drive the spline shaft 220 to linearly move through the second support seat 223. The first support base 222 is fixedly connected with the radial support base 20. The first swing arm 2200 is fixedly installed at the outer end of the spline shaft 220, and the first swing arm 2200 and the spline shaft 220 can rotate synchronously. The first swing arm 2200 is hinged to one end of the first link 221, and the other end of the first link 221 is hinged to the vertical movement sliding plate 213. In the lifting process of the vertical movement sliding plate 213, the first swing arm 2200 can be driven to swing through the first connecting rod 221, so as to drive the spline shaft 220 to rotate. As shown in fig. 9, the spline housing 2201 is fixedly provided with the rocker arm 229, so that the spline shaft 220 can move axially relative to the rocker arm 229 and can drive the rocker arm 229 to rotate. As shown in fig. 8, the rocker arm 229 is radially provided with a rocker arm shaft 2290, the rocker arm shaft 2290 is movably provided with a second swing arm 227, the second swing arm 227 can rotate around the rocker arm shaft 2290, the rotating sleeve shaft 300 is movably provided with a connecting rod movable joint 226, and the connecting rod movable joint 226 can rotate around the rotating sleeve shaft 300. One end of the second link 225 is hinged to the second swing arm 227 through a first hinge shaft 224, and the other end of the second link 225 is hinged to the link joint 226 through a second hinge shaft 228. The first hinge axis 224 is perpendicular to the rocker shaft 2290 and the second hinge axis 228 is perpendicular to the swivel sleeve axis 300. When the vertical movement sliding plate 213 is lifted, the spline shaft 220 can be driven to rotate by the first connecting rod 221, the spline shaft 220 drives the rotary sleeve 30 to rotate by the second connecting rod 225, and the rotation angles of all the spline shafts 220 are consistent by the rotary sleeve 30, so that the lifting amplitude of the vertical movement sliding plate 213 is consistent, and the sealing head main body 72 is adjusted to be in a horizontal position and assembled with the sealing head connecting flange 71.

As shown in fig. 2, three elastic lifting mechanisms 4 are mounted on the fixed base 1, and the elastic lifting mechanisms 4 are uniformly distributed on the periphery of the rotating mechanism 3. After the head main body 72 is lifted above the three-jaw chuck 5, the head main body 72 can be placed on the elastic lifting mechanisms 4, and the head main body 72 is lifted by the three elastic lifting mechanisms 4. Because the elastic lifting mechanism 4 can be adjusted along with the position of the seal head main body 72 in height, a sufficient adjusting space can be provided for the adjustment of the seal head main body 72 by the positioning unit 2. The elastic lifting mechanism 4 can be an existing mechanism with adjustable length and can automatically extend.

Working principle:

the seal head connecting flange 71 is firstly horizontally placed and clamped and fixed by the three-jaw chuck 5. And then hoisting the seal head main body 72 above the seal head connecting flange 71, slowly putting down the seal head main body 72, and then supporting by the three elastic lifting mechanisms 4, wherein the spigot 710 and the seal head mounting opening 720 are correspondingly contacted. Then, the head connecting flange 71 and the head main body 72 are mated, and the two are kept in agreement, and the specific mated actions are as follows:

all radial cylinders 211 drive the sliding table 210 to move horizontally at the same time, so that the vertical moving sliding plate 213 is pressed against the outer edge 721 of the seal head main body 72 from outside, and the pressing block 215 is positioned above the outer edge 721;

simultaneously, the vertical air cylinders 212 on each positioning unit 2 are started, the vertical air cylinders 212 pull the vertical moving sliding plates 213 downwards to move downwards, meanwhile, the vertical moving sliding plates 213 drive the pressing blocks 215 to move downwards, the outer edges 721 are pulled downwards, and the elastic lifting mechanism 4 enables the seal head main body 72 to have a certain downward movement stroke. The vertical moving sliding plate 213 moves downwards and drives the first swing arm 2200 to swing through the first connecting rod 221, the first swing arm 2200 drives the spline shaft 220 to rotate, and the spline shaft 220 drives the rotary sleeve 30 to rotate relative to the supporting cylinder 31 through the rocker arm 229, the second swing arm 227, the second connecting rod 225, the connecting rod movable joint 226 and the rotary sleeve shaft 300 sequentially. The rotation sleeve 30 and the supporting cylinder 31 are matched to rotate, so that the distances for forcing the three vertical movement sliding plates 213 to move downwards are equal, and the heights of the outer edges 721 of the seal head main body 72 are kept equal, so that the seal head main body 72 can be ensured to be kept horizontal, and the seal head main body 72 and the seal head connecting flange 71 can be assembled into a whole as shown in fig. 19 and 20. In the assembly process, each elastic lifting mechanism 4 can be matched with the pull-down action of the positioning unit 2 and the specific position of the seal head main body 72 to adjust the height through self elasticity, so that the seal head main body 72 can freely adjust the angle under the pull-down action of the positioning unit 2 until the angle is in a horizontal state in the whole assembly process, thereby ensuring the vertical compaction and lamination of the seal head main body and the seal head connecting flange, ensuring the planeness of the seal head and the lower connecting flange, ensuring the assembly to be quick and accurate and achieving the effects of time and labor saving.

As shown in fig. 13, a rotating sleeve pressing plate 32 for limiting the rotating sleeve 30 may be mounted on the upper portion of the supporting cylinder 31. The bottom of the supporting cylinder 31 is provided with a supporting cylinder cover 310, and the supporting cylinder cover 310 is fixedly connected with the fixed base 1. The support cylinder cover 310 is provided with mounting grooves 311, and the number of the mounting grooves 311 is the same as that of the radial support seats 20. The inner end of the radial support base 20 is fitted with the mounting groove 311. The supporting cylinder method cover 310 and the mounting groove 311 play a role in positioning, are favorable for accurately connecting the supporting cylinder 31 and the radial supporting seat 20 into a whole, can improve the assembly precision and efficiency between the rotating sleeve 30 and the transmission mechanism 22, ensure higher synchronous lifting precision of the vertically moving slide plate 213 under the action of the rotating sleeve 30, and prevent the horizontal offset of the seal head main body 72 relative to the seal head connecting flange 71, namely, the seal head main body 72 and the seal head connecting flange 71 are kept horizontally consistent after being vertically matched, thereby ensuring that the matching gap between the seal head main body 72 and the seal head connecting flange 71 is consistent everywhere, and being favorable for accurately spot-welding the two. The rotary sleeve pressing plate 32 is matched, so that the movement track of the rotary sleeve 30 can be further limited, the stable operation of the rotary sleeve is ensured, and the rotary sleeve 30 can be conveniently disassembled and overhauled to ensure the normal operation of the rotary sleeve, thereby improving the horizontal installation precision and speed of the seal head main body 72.

As shown in fig. 8, the outer periphery of the middle part of the supporting cylinder 31 is provided with a supporting cylinder annular groove 312, the supporting cylinder annular groove 312 can reduce the contact area between the rotating sleeve 30 and the supporting cylinder 31, and reduce the friction force, and meanwhile, rollers can be installed in the supporting cylinder annular groove 312, so that the rotation between the rotating sleeve 30 and the supporting cylinder 31 is smoother, and the moving synchronization degree of each positioning unit 2 is further improved.

As shown in fig. 9, the first spline shaft bearing assembly 23 is installed in the second support seat 223. The first spline shaft bearing assembly 23 is composed of a first gland 230, a first bearing 231, and a compression sleeve 232. The second supporting seat 223 is provided with a second mounting hole 2230, and a second limiting ring 2231 is arranged in the second mounting hole 2230. At least one first bearing 231 is installed in the second installation hole 2230, an outer ring of the first bearing 231 is matched with the second limit ring 2231, and an inner ring of the first bearing 231 is matched with the spline shaft 220. The first gland 230 is installed inside the second installation hole 2230, the flange of the first gland 230 is connected with the second support seat 223, and the inner end of the first gland 230 is matched with the outer ring of the first bearing 231. The first gland 230 can restrict the first bearing 231 from moving to the left in fig. 9, and the second stopper ring 2231 can restrict the first bearing 231 from moving to the right in fig. 9, and the first bearing 231 can be engaged with the shoulder of the spline shaft 220. When the second supporting seat 223 moves, the second supporting seat 223 can drive the spline shaft 220 to move right in fig. 9 through the first gland 230 and the first bearing 231, and can also drive the transmission mechanism 22 to move left in fig. 9 through the second limiting ring 2231 and the first bearing 231. To further provide accuracy in driving the spline shaft 220 to move, a pressing sleeve 232 is mounted on the outer periphery of the spline shaft 220, the pressing sleeve 232 is located between the first bearing 231 and the first swing arm 2200, the pressing sleeve 232 is matched with the inner ring of the first bearing 231, in addition, a screw hole 2203 can be axially formed in the outer end of the spline shaft 220, as shown in fig. 3, a positioning cover 2204 is mounted on the outer end, and the positioning cover 2204 is fixed to the outer end of the spline shaft 220 through a bolt and the screw hole 2203, so that the first bearing 231 can be limited to move rightwards relative to the spline shaft 220 through the first swing arm 2200 and the pressing sleeve 232. As shown in fig. 9, a pressing sleeve 232 is fixedly installed on the outer periphery of the spline shaft 220, the pressing sleeve 232 is matched with the inner ring of the first bearing 231, and the pressing sleeve 232 and the first pressing cover 230 are located on two sides of the first bearing 231.

As shown in fig. 9, a second spline shaft bearing assembly 24 is installed in the first support seat 222, and the second spline shaft bearing assembly 24 is formed by connecting a second gland 240, a third gland 241 and a second bearing 242. The first support base 222 is provided with a first mounting hole 2220, and a first limiting ring 2221 is arranged in the first mounting hole 2220. The second bearing 242 is installed in the first installation hole 2220. The outer race of the second bearing 242 mates with the first stop ring 2221. A limiting convex edge 2202 is arranged in the middle of the spline housing 2201. The second gland 240 is installed at the outer end of the spline housing 2201, the second gland 240 and the limiting flange 2202 form an annular groove, the annular groove is matched with the inner ring of the second bearing 242, the third gland 241 is installed at the outer end of the first supporting seat 222, the third gland 241 is matched with the outer ring of the second bearing 242, and the second gland 240 is located in the third gland 241. This configuration may further ensure that spline shaft 220 is both axially movable relative to first support base 222 and rotationally movable relative to rocker arm 229.

As shown in fig. 14, the elastic lifting mechanism 4 is composed of a support sleeve 40, a spring 41, a guide shaft 42, a universal ball 43 and a guide shaft limit cover 44. A spring 41 and a guide shaft 42 are sequentially installed in the support sleeve 40 from bottom to top. The upper end of the supporting sleeve 40 is provided with a guide shaft limit cover 44. The upper end of the guide shaft 42 passes through the guide shaft limiting cover 44 and is provided with a universal ball 43. The structure is simple, the strength is high, the head main body 72 can be lifted up by enough supporting force, the head main body 72 can move up and down through the guide shaft 42, the rolling friction of the universal ball 43 is convenient for adjusting the head main body 72 to a horizontal state, and the precision of the head main body 72 and the head connecting flange 71 can be improved.

As shown in fig. 16, the rotating frame assembly 6 is movably mounted on the outer periphery of the fixed base 1. The rotating frame assembly 6 is composed of a rotating sleeve 61 and a guide plate 62. As shown in fig. 17, three guide plates 62 constitute a triangular frame, and the rotating sleeve 61 is an inscribed circle of the triangular frame. Each guide plate 62 is provided with a strip-shaped guide hole 60. Each strip-shaped guide hole 60 is internally provided with a directional column 217, the directional column 217 is provided with a connecting piece 218, and each connecting piece 218 is fixedly connected with the bottom of the sliding table 210. According to the technical scheme, the sliding table mechanism 21 can synchronously move towards the three-jaw chuck 5, and if the sliding table mechanism synchronously moves outwards and is far away from the three-jaw chuck 5, the accuracy and the efficiency of adjusting the seal head main body 72 can be further improved, and favorable conditions are provided for assembling the seal head main body 72 and the seal head connecting flange 71.

As shown in fig. 7, the angle between the first hinge axis 224 and the second hinge axis 228 is greater than 0 degrees and less than 90 degrees. According to the different dimensional proportion among the components of the seal head horizontal positioning mechanism, the seal head horizontal positioning mechanism can be properly adjusted

The technical scheme of the application is not limited to the scope of the embodiments of the application. The technical content that is not described in detail in the application is known in the prior art.

Claims (10)

1. Head horizontal positioning mechanism, it has unable adjustment base (1), its characterized in that: the top of the fixed base (1) is provided with a rotating mechanism (3), the periphery of the rotating mechanism (3) is provided with three positioning units (2), the rotating mechanism (3) is composed of a rotating sleeve (30) and a supporting cylinder (31), the supporting cylinder (31) is connected with the fixed base (1), the periphery of the supporting cylinder (31) is movably provided with the rotating sleeve (30), and the periphery of the rotating sleeve (30) is radially provided with three rotating sleeve shafts (300); a three-jaw chuck (5) is arranged on the fixed base (1), and the three-jaw chuck (5) is positioned in the supporting cylinder (31);

each positioning unit (2) is formed by connecting a radial supporting seat (20), a sliding table mechanism (21) and a transmission mechanism (22), one end of the radial supporting seat (20) is connected with the fixed base (1), at least one first linear guide rail (200) is arranged in the radial supporting seat (20), a sliding rail of the first linear guide rail (200) is connected with the radial supporting seat (20), and the sliding table mechanism (21) is arranged on a sliding block of the first linear guide rail (200); the sliding table mechanism (21) is formed by connecting a sliding table (210), a radial cylinder (211), a vertical cylinder (212), a vertical moving sliding plate (213), a vertical support (214), a pressing block (215) and a second linear guide rail (216), wherein the sliding table (210) is connected with a sliding block of the first linear guide rail (200), the radial cylinder (211) is arranged on the side part of the radial support seat (20), a piston rod of the radial cylinder (211) is connected with the sliding table (210), the vertical support (214) and the vertical cylinder (212) are arranged on the sliding table (210), the second linear guide rail (216) is vertically arranged in the vertical support (214), the sliding rail of the second linear guide rail (216) is connected with the vertical support (214), the sliding block of the second linear guide rail (216) is provided with the vertical moving sliding plate (213), and the piston rod of the vertical cylinder (212) is connected with the pressing block (215) on the inner side of the vertical moving sliding plate (213); the radial support seat (20) is provided with a transmission mechanism (22), the transmission mechanism (22) is formed by connecting a spline shaft (220), a first connecting rod (221), a first support seat (222) and a second support seat (223), the spline shaft (220) is provided with a spline housing (2201), the periphery of the spline housing (2201) is provided with the first support seat (222), the spline housing (2201) can only rotate relative to the first support seat (222), the spline shaft (220) can rotate relative to the first support seat (222) and can also axially move relative to the first support seat (222), the outer end of the spline shaft (220) is provided with the second support seat (223), the spline shaft (220) can only rotate relative to the second support seat (223), the second support seat (223) is connected with a sliding table (210), the first support seat (222) is connected with the radial support seat (20), the outer end of the spline shaft (220) is fixedly provided with a first swing arm (2200), the first support seat (220) is hinged with one end of the first connecting rod (221), the other end of the spline shaft (221) is hinged with one end of the first connecting rod (221), the other end of the first connecting rod (221) is hinged with the vertical arm shaft (213) and can axially move relative to the swing arm (229) and can rotate relative to the swing arm (229) (220) and 229) to the axial direction (229), a second swing arm (227) is movably arranged on the swing arm shaft (2290), a connecting rod movable joint (226) is movably arranged on the rotary sleeve shaft (300), one end of the second connecting rod (225) is hinged with the second swing arm (227) through a first hinge shaft (224), the other end of the second connecting rod (225) is hinged with the connecting rod movable joint (226) through a second hinge shaft (228), the first hinge shaft (224) is vertical to the swing arm shaft (2290), and the second hinge shaft (228) is vertical to the rotary sleeve shaft (300);

three elastic lifting mechanisms (4) are arranged on the fixed base (1), and the elastic lifting mechanisms (4) are uniformly distributed on the periphery of the rotating mechanism (3).

2. The head horizontal positioning mechanism of claim 1, wherein: the bottom of the supporting cylinder (31) is provided with a supporting cylinder method cover (310), the supporting cylinder method cover (310) is provided with mounting grooves (311), the number of the mounting grooves (311) is the same as that of the radial supporting seats (20), and the inner ends of the radial supporting seats (20) are matched with the mounting grooves (311).

3. The head horizontal positioning mechanism of claim 1, wherein: the periphery of the middle part of the supporting cylinder (31) is provided with a supporting cylinder annular groove (312).

4. The head horizontal positioning mechanism of claim 1, wherein: a first spline shaft bearing assembly (23) is arranged in the second supporting seat (223); the first spline shaft bearing assembly (23) is composed of a first gland (230), a first bearing (231) and a pressing sleeve (232), a second installation hole (2230) is formed in the second supporting seat (223), a second limiting ring (2231) is arranged in the second installation hole (2230), at least one first bearing (231) is installed in the second installation hole (2230), the outer ring of the first bearing (231) is matched with the second limiting ring (2231), the inner ring of the first bearing (231) is matched with the spline shaft (220), the first gland (230) is installed on the inner side of the second installation hole (2230), a flange plate of the first gland (230) is connected with the second supporting seat (223), and the inner end of the first gland (230) is matched with the outer ring of the first bearing (231).

5. The head horizontal positioning mechanism according to claim 4, wherein: the spline shaft (220) is fixedly provided with a pressing sleeve (232) at the periphery, the pressing sleeve (232) is matched with the inner ring of the first bearing (231), and the pressing sleeve (232) and the first pressing cover (230) are positioned on two sides of the first bearing (231).

6. The head horizontal positioning mechanism of claim 1, wherein: a second spline shaft bearing assembly (24) is arranged in the first supporting seat (222), the second spline shaft bearing assembly (24) comprises a second gland (240), a third gland (241) and a second bearing (242), a first mounting hole (2220) is formed in the first supporting seat (222), a first limiting ring (2221) is arranged in the first mounting hole (2220), a second bearing (242) is arranged in the first mounting hole (2220), an outer ring of the second bearing (242) is matched with the first limiting ring (2221), a limiting convex edge (2202) is arranged in the middle of the spline sleeve (2201), a second gland (240) is arranged at the outer end of the spline sleeve (2201), an annular groove is formed by the second gland (240) and the limiting convex edge (2202), and the annular groove is matched with an inner ring of the second bearing (242); the outer end of the first supporting seat (222) is provided with a third gland (241), the third gland (241) is matched with the outer ring of the second bearing (242), and the second gland (240) is positioned in the third gland (241).

7. The head horizontal positioning mechanism of claim 1, wherein: the elastic lifting mechanism (4) is composed of a supporting sleeve (40), a spring (41), a guide shaft (42), a universal ball (43) and a guide shaft limiting cover (44), wherein the spring (41) and the guide shaft (42) are sequentially installed in the supporting sleeve (40) from bottom to top, the guide shaft limiting cover (44) is installed at the upper end of the supporting sleeve (40), and the universal ball (43) is installed outside the guide shaft limiting cover (44) in a penetrating mode at the upper end of the guide shaft (42).

8. The head horizontal positioning mechanism of claim 1, wherein: the rotary frame assembly (6) is movably mounted on the periphery of the fixed base (1), the rotary frame assembly (6) is composed of a rotary sleeve (61) and guide plates (62), three guide plates (62) form a triangular frame, the rotary sleeve (61) is an inscribed circle of the triangular frame, each guide plate (62) is provided with a strip-shaped guide hole (60), each strip-shaped guide hole (60) is internally provided with a directional column (217), each directional column (217) is provided with a connecting piece (218), and each connecting piece (218) is fixedly connected with the bottom of the sliding table (210).

9. The head horizontal positioning mechanism of claim 1, wherein: an included angle between the first hinge axis (224) and the second hinge axis (228) is greater than 0 degrees and less than 90 degrees.

10. The head horizontal positioning mechanism of claim 1, wherein: a rotary sleeve pressing plate (32) for limiting the rotary sleeve (30) is arranged on the upper portion of the supporting cylinder (31).