CN117600871A - Fluid pump turning positioning fixture - Google Patents

Abstract

The invention discloses a fluid pump turning positioning fixture, which relates to the technical field of fluid pump turning and comprises a workbench; the top center of the workbench is fixedly provided with a supporting seat, the top center of the supporting seat is slidably provided with a driving block, a supporting plate is arranged on the supporting seat along the center in an annular array, a transmission assembly is arranged in the side wall of the supporting seat, and the supporting plate is in transmission connection with the driving block through the transmission assembly. When the support plate is used, the support plate extends out of the supporting seat through the transmission assembly to be matched with the inner wall of the workpiece, the support is supported and fixed, the pushing block is driven when the trigger block is pressed to the support plate by the workpiece to move, the position of the support plate is limited through sliding fit of the pushing block and the baffle plate, the stability of supporting and fixing of the support plate is guaranteed, a plurality of groups of support plates can synchronously move through the matching of the transmission assembly and the driving block, and therefore the workpiece and the turning prop after being supported and fixed are guaranteed to be coaxial, and the turning accuracy is further maintained.

Description

Fluid pump turning positioning fixture

Technical Field

The invention relates to the technical field of fluid pump turning, in particular to a fluid pump turning positioning fixture.

Background

In a fluid pump including a motor, the motor drives an impeller to rotate so that fluid is sucked from an inlet and discharged from an outlet, and in the manufacturing process of the fluid pump, a pump cover is required to be machined.

Chinese patent publication No.: the invention relates to a self-telescopic positioning fixture for a pump shell, which comprises a supporting seat, wherein the lower end of the supporting seat is fixedly connected with a chuck, and the upper end of the supporting seat is suitable for being inserted into a D bottom hole of the pump shell; the limiting support mechanism is arranged on the support seat; when the pump shell is pressed down, the B conical surface of the pump shell triggers the limit supporting mechanism, so that the limit supporting mechanism carries out limit supporting on the C reference surface of the pump shell, and the pump shell is limited and supported at a preset depth; the center of the disc body of the chuck is fixedly connected with the supporting seat, and each claw of the chuck is suitable for clamping the pump shell which is supported in a limiting mode.

In the above-mentioned scheme, push down each spacing bracing piece of drive radial outwards stretch out through the pump case, realize the spacing support to the pump case, but still need the manual work to press from both sides tightly the pump cover work piece through the jack catch in the in-service use in-process, the operation is comparatively loaded down with trivial details, and the end of above-mentioned spacing supporting mechanism does not contact with the inner wall of pump cover, thereby do not have the effect of supporting fixed pump cover, assume that above-mentioned spacing supporting mechanism extends and supports fixedly with the inner wall of pump cover and support it, like this when taking off the work piece, spacing supporting mechanism is because the dabber does not rise the space of replying, so spacing supporting mechanism can the inner wall of pump cover work piece block, there is certain limitation.

Therefore, it is necessary to provide a fluid pump turning positioning fixture that solves the above technical problems.

Disclosure of Invention

The invention aims to provide a fluid pump turning positioning clamp which is used for solving the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: a fluid pump turning positioning fixture comprises a workbench; the top center of the workbench is fixedly provided with a supporting seat, the top center of the supporting seat is provided with a driving block in a sliding manner, the supporting seat is provided with a supporting plate in an annular array along the center, the side wall of the supporting seat is internally provided with a transmission assembly, the supporting plate is in transmission connection with the driving block through the transmission assembly, the workbench is provided with a clamping mechanism, the clamping mechanism is in transmission connection with the supporting plate through a driven piece, the driven piece is arranged in the supporting seat, and one side of the workbench is provided with a sliding plate in a sliding manner;

when the driving block moves downwards, the driving block drives the supporting plate to move to extend out of the supporting seat through the transmission assembly, and when the supporting plate moves, the supporting plate drives the clamping mechanism to move in the opposite direction to the moving direction of the supporting plate through the driven piece.

As a further scheme of the invention: the one end that the drive piece was kept away from to the backup pad is provided with the trigger piece, the one end that the backup pad was kept away from to the trigger piece is fixedly provided with the rubber pad, the inner wall elastic connection of backup pad both sides through first spring and supporting seat.

As a further scheme of the invention: the bottom center horizontal array of backup pad has seted up first recess, the slip of supporting seat is inlayed and is equipped with the spacing ring, be provided with the second spring between the lateral wall of spacing ring and supporting seat, the fixed first arch that is provided with in top of spacing ring, first arch and first recess are on same horizontal line, and first arch and a set of first recess slip adaptation, be provided with two sets of baffles between first recess and the first arch, two sets of baffle keep away from one side relatively and the inner wall elastic connection of supporting seat.

As a further scheme of the invention: the one end that the backup pad kept away from the drive piece relatively is provided with the cavity, the one end that the trigger piece is close to the backup pad seals elastic connection with the cavity, the one end that the backup pad kept away from the cavity slides and inlays and be equipped with the impeller block, the cavity is linked together with the top of impeller block, when the relative drive piece of trigger piece removes for the impeller block removes and stretches out the backup pad and with baffle sliding fit, the bottom of spacing ring is along centre of a circle array fixedly provided with the second stay cord, the one end and the sliding plate fixed connection that the spacing ring was kept away from to the second stay cord.

As a further scheme of the invention: the transmission assembly comprises a first gear and a second gear; the first gear and the second gear are connected through belt transmission, two ends of the first gear are fixedly connected with the top of the inner wall of the supporting seat through supporting rods, the second gear is rotatably provided with an installation seat, the second gear is elastically connected with the inner wall of the supporting seat through a third spring through the installation seat, a first tooth slot matched with the second gear is arranged on the driving block along the central array, and a second tooth slot matched with the first gear is arranged at the center of the top of the supporting plate.

As a further scheme of the invention: the one end fixedly connected with third stay cord of driving piece is kept away from to the mount pad, the one end and the sliding plate fixed connection of mount pad are kept away from to the third stay cord, be provided with the pinch roller between first gear and the second gear, the elastic sliding of pinch roller sets up the inner wall at the supporting seat.

As a further scheme of the invention: the clamping mechanism comprises a plurality of groups of first toothed plates; the top center of workstation has seted up the cross groove, first pinion rack and cross groove sliding connection, the one end top that the drive piece was kept away from to first pinion rack is provided with the second grip block, the bottom of backup pad is provided with the third tooth's socket with follower transmission complex, the top of first pinion rack is connected with the backup pad transmission through the follower.

As a further scheme of the invention: the top of second grip block is through fourth spring elastic connection has first grip block, the one end fixedly connected with expansion plate that first grip block is close to the supporting seat, the one end fixedly connected with lantern ring that first grip block was kept away from to the expansion plate, the periphery at the supporting seat is established to lantern ring slip cap, and elastic connection between lantern ring and the workstation.

As a further scheme of the invention: the bottom horizontal array of first pinion rack is provided with the second recess, the bottom of first pinion rack is provided with the fixed plate, the fixed diaphragm that is provided with in top of fixed plate, be provided with the second arch with the sliding fit of second recess on the diaphragm, the fixed plate sets up in the cross recess, and the one end fixed connection square plate that multiunit fixed plate is close to the drive block, square plate and the laminating of cross recess inner wall slip.

As a further scheme of the invention: the one end fixedly connected with side's pipe of supporting seat is kept away from to first pinion rack, second grip block and side's pipe slip elastic connection, the bottom fixedly connected with wedge of second grip block, the bottom slip laminating of wedge has the fly leaf, the lateral wall of fly leaf and the top inner wall sliding connection of fixed plate, the one end and the side's pipe elastic connection of fixed plate are kept away from to the fly leaf, the first stay cord of bottom fixed connection of fixed plate, the one end and the sliding plate fixed connection of fixed plate are kept away from to first stay cord.

Compared with the prior art, the invention has the beneficial effects that: through the cooperation of backup pad, the drive piece, trigger piece and drive assembly, place the pump cover work piece on the supporting seat, the work piece pushes down the drive piece and makes the backup pad stretch out the inner wall cooperation of supporting seat and work piece through drive assembly, support it fixedly, when the trigger piece is pushed to the backup pad by the work piece and remove, still can drive the impeller block, through the sliding fit of impeller block and baffle, make can the spacing ring upwards move, let first arch stretch into the position of first recess with the backup pad and carry out spacing, guarantee its support fixed stability, make multiple sets of backup pads can synchronous movement through the cooperation of drive assembly and drive piece, thereby guarantee that the work piece after being supported fixedly is coaxial with the turning cutter, and then keep the accuracy of turning, the backup pad removes and still carry out centre gripping fixedly to the outside of work piece through follower drive fixture, realize double centre gripping, guarantee that the work piece can not appear the skew in the turning process; through pushing down the sliding plate, can contact the spacing of backup pad and fixture through the stay cord to and make drive assembly and drive piece separation, realize backup pad and fixture's automatic re-setting, thereby make the work piece can take off smoothly.

Drawings

Fig. 1 is a schematic view of a front three-dimensional structure of the present invention.

FIG. 2 is a schematic diagram of a middle section structure of the present invention.

Fig. 3 is a schematic structural view of a transmission assembly according to the present invention.

Fig. 4 is a schematic structural view of the first groove and the pushing block in the present invention.

Fig. 5 is a schematic view of the structure of the baffle and the first protrusion in the present invention.

Fig. 6 is a schematic diagram of the structure at a in fig. 2 according to the present invention.

Fig. 7 is a schematic diagram of the structure at B in fig. 2 in the present invention.

Fig. 8 is a schematic view of a middle sectional structure of the support plate in the present invention.

Fig. 9 is a schematic structural view of a clamping mechanism in the present invention.

Fig. 10 is a schematic structural view of a fixed plate and a movable plate according to the present invention.

In the figure: 1. a work table; 2. a support base; 3. a driving block; 4. a telescoping plate; 5. a first clamping block; 6. a first toothed plate; 7. a trigger block; 8. a sliding plate; 9. a fixing plate; 10. a movable plate; 11. a first pull rope; 12. a pinch roller; 13. a first gear; 14. a mounting base; 15. a second gear; 16. a support plate; 17. a follower; 18. a first groove; 19. a pushing block; 20. a first protrusion; 21. a baffle; 22. a limiting ring; 23. a second pull rope; 24. a third pull rope; 25. a second clamping block; 26. square tubes; 27. wedge blocks; 28. a collar; 29. a square plate; 30. a cavity.

Detailed Description

Referring to fig. 1-10, in an embodiment of the present invention, a positioning fixture for turning a fluid pump includes a workbench 1; the center of the top of the workbench 1 is fixedly provided with a supporting seat 2, the center of the top of the supporting seat 2 is elastically provided with a driving block 3 in a sliding manner, the supporting seat 2 is provided with a supporting plate 16 in an annular array along the center, the side wall of the supporting seat 2 is internally provided with a transmission assembly, the supporting plate 16 is in transmission connection with the driving block 3 through the transmission assembly, the workbench 1 is provided with a clamping mechanism, the clamping mechanism is in transmission connection with the supporting plate 16 through a driven piece 17, the driven piece 17 is arranged in the supporting seat 2, and one side of the workbench 1 is provided with a sliding plate 8 in a sliding manner;

preferably, the driving block 3 is composed of a square block and a round block, the round block is arranged at the top end of the square block, thus when the driving block 3 moves downwards, the moving distance of the square block can be limited through the round block, the bottom of the square block slides into the side walls of the workbench 1 and the supporting seat 2, and a first spring is arranged between the square block and the inner wall of the workbench 1, so as to provide power for the automatic resetting of the driving block 3, the supporting plates 16 are arranged in a crisscross array on the side wall of the supporting seat 2, when in use, the pump cover of the fluid pump is placed on the supporting seat 2, the random pump cover workpiece moves downwards under the action of gravity, so that the driving block 3 moves to extend out of the supporting seat 2 through the driving component, when the supporting plates 16 extend out of the side wall of the supporting seat 2, a plurality of groups of supporting plates 16 arranged are contacted with the inner wall of workpieces, and form the support to the work piece inner wall, when backup pad 16 removed, backup pad 16 passes through the motion that follower 17 drive fixture and backup pad 16 remove opposite direction, thereby realize that fixture carries out the centre gripping to the bottom of work piece in the outside fixed, reach dual centre gripping fixed effect, guarantee the stability of work piece when carrying out the turning, and through the backup pad 16 that stretches out the supporting seat 2 lateral wall and the mutually supporting of the fixture of opposite motion with backup pad 16, also can realize automatic centering's effect to the work piece, even make the position that the work piece was placed correspond with turning center is coaxial, avoid the transmission centre gripping fixed back to produce the skew, appear slightly the deviation with the turning cutter on the lathe, result in the work piece processing to appear the defective work, and need not the manual work and fix, only need place the work piece on supporting seat 2 can.

Referring to fig. 1-4, preferably, one end of the supporting plate 16 far away from the driving block 3 is provided with a triggering block 7, one end of the triggering block 7 far away from the supporting plate 16 is fixedly provided with a rubber pad, the contact area between the supporting plate 16 and the inner wall of a workpiece can be increased through the rubber pad, meanwhile, the supporting force of the workpiece acting on the supporting plate 16 can be buffered, the problem that the inner wall of the workpiece is damaged due to a little stress is avoided, two sides of the supporting plate 16 are elastically connected with the inner wall of the supporting seat 2 through second springs, when the driving block 3 moves downwards, the supporting plate 16 is driven by a transmission component to move and stretch out of the side wall of the supporting seat 2, the second springs are stressed and shrink, when the transmission component is separated from the driving block 3, the second springs reset and push the supporting plate 16 to move and reset, so that an automatic reset effect is achieved, and meanwhile, the workpiece subjected to turning processing is also convenient to take down.

Referring to fig. 2, 4, 5, and 7-8, preferably, a plurality of groups of first grooves 18 are formed in a horizontal array at the bottom center of the support plate 16, a limiting ring 22 is embedded in the support seat 2 in a sliding manner, a third spring is arranged between the limiting ring 22 and the side wall of the support seat 2, a first protrusion 20 is fixedly arranged at the top of the limiting ring 22, the first protrusion 20 and the first grooves 18 are on the same horizontal line, the first protrusion 20 is in sliding fit with one group of first grooves 18, two groups of baffles 21 are arranged between the first grooves 18 and the first protrusions 20, and one side, which is far away from the two groups of baffles 21, of the two groups of baffles are connected with the inner wall of the support seat 2 in an elastic manner (a spring piece or a spring column with an elastic contraction function can be adopted); when the support plate is used, in an initial state, two groups of baffles 21 are oppositely attached to one end, the top of the first bulge 20 is attached to the bottom of the baffle 21, the third spring is in a stressed compression state, when the support plate 16 moves to extend out of the side wall of the support seat 2 to support and fix a workpiece, one group of first grooves 18 can move to the position corresponding to the first bulge 20, then when the support plate 16 finishes supporting and fixing the workpiece, the baffle 21 moves to two sides to be separated into an open state, the third spring quickly resets upwards to push the limiting ring 22, so that the first bulge 20 moves to extend into one group of first grooves 18 to limit the relative positions of the support plate 16 and the support seat 2, and the problem that the support plate 16 moves in the support process is avoided.

Referring to fig. 5 and 8, preferably, one end of the supporting plate 16, which is relatively far away from the driving block 3, is provided with a cavity 30, one end of the triggering block 7, which is close to the supporting plate 16, is in sealing elastic connection with the cavity 30, a fourth spring is arranged between the triggering block 7 and the cavity 30, one end of the supporting plate 16, which is far away from the cavity 30, is slidably embedded with a pushing block 19, the vertical section of the pushing block 19 is in a triangular structure, the vertex angle of the pushing block is towards one end, which is opposite to two groups of baffle plates 21, of the cavity 30, the top of the pushing block 19 is communicated with the top of the pushing block 19, the top side of one end, which is opposite to the two groups of baffle plates 21, is in chamfering arrangement, so that when the triggering block 7 moves relative to the driving block 3, the pushing block 19 moves to extend out of the supporting plate 16 and pushes the two groups of baffle plates 21 to be far away from each other in a sliding fit with the baffle plates 21, a second pull rope 23 is fixedly arranged at the bottom of the limiting ring 22 along a circle center array, one end, which is far away from the limiting ring 22, and the sliding plate 8 is fixedly connected, when in use, when the supporting plate 16 moves to extend out of the side wall of the supporting seat 2 to support and fix a workpiece, the triggering block 7 is pushed to contact with the inner wall of the workpiece first, then the triggering block 7 is extruded to move towards the direction of the driving block 3, so that the air in the cavity 30 is conveyed to the upper end of the pushing block 19, the pushing block 19 moves downwards on the supporting plate 16, the pushing block 19 moves downwards to push the two groups of baffle plates 21 to be far away from each other, when the baffle plates 21 are far away from each other, the limiting ring 22 moves upwards under the reset of the third spring, the first bulge 20 moves upwards to extend into the first groove 18, the position of the supporting plate 16 is limited, the supporting and fixing stability of the supporting plate 16 is ensured, when the limiting of the supporting plate 16 is required to be relieved, the sliding plate 8 slides downwards, the sliding plate 8 pulls the limiting ring 22 to move downwards through the second pull rope 23, the limiting ring 22 moves downwards to drive the first protrusion 20 to be separated from the first groove 18, so that the limit of the support plate 16 is released.

Referring to fig. 2, 3 and 6, the transmission assembly preferably includes a first gear 13 and a second gear 15; the first gear 13 and the second gear 15 are connected through belt transmission (chain wheel and chain can be adopted for transmission connection) so as to realize synchronous rotation of the first gear 13 and the mounting seat 14, two ends of the first gear 13 are fixedly connected with the top of the inner wall of the supporting seat 2 through supporting rods, the mounting seat 14 is rotatably arranged on the second gear 15, the mounting seat 14 is elastically connected with the inner wall of the supporting seat 2 through a fifth spring, a first tooth socket matched with the second gear 15 in transmission is arranged on the driving block 3 of the workbench 1 along the central array, the first clamping block 5 is meshed with the first tooth socket through the matching of the fifth spring and the mounting seat 14, the first tooth socket is arranged on four surfaces of the square block above the driving block 3, the top center of backup pad 16 is provided with the second tooth's socket with first gear 13 transmission complex, first gear 13 and second tooth's socket mesh all the time, first gear 13 sets up the one end of keeping away from driving piece 3 in supporting seat 2, and first gear 13 and the second tooth's socket meshing transmission of backup pad 16 being close to the one end top of trigger piece 7, when using, through synchronous pivoted first gear 13, second gear 15, when driving piece 3 moves down, driving piece 3 drives second gear 15 and rotates, then drive backup pad 16 through first gear 13 and remove the lateral wall that stretches out supporting seat 2, realize multiunit backup pad 16 and stretch out the lateral wall of supporting seat 2 and support fixedly to the work piece, and make the work piece reach automatically coaxial with the lathe, thereby convenient follow-up turning work. In order to make the quick contact with the limit of the support plate 16 and realize the automatic reset of the support plate 16 after turning is completed, so the third pull rope 24 is fixedly connected to one end of the mounting seat 14 away from the driving block 3, one end of the third pull rope 24 away from the mounting seat 14 is fixedly connected with the sliding plate 8, the pinch roller 12 is arranged between the first gear 13 and the second gear 15, the pinch roller 12 is elastically and slidably arranged on the inner wall of the support seat 2, when the turning of a workpiece is completed, the sliding plate 8 is slid downwards, the sliding plate 8 slides through the third pull rope 24 and the second pull rope 23 to respectively correspondingly enable the mounting seat 14 to move towards the direction of the first gear 13 and separate from the first tooth groove, and the limit ring 22 moves downwards to drive the first protrusion 20 to separate from the first groove 18, at this moment, the limit of the support plate 16 is released, the support plate 16 moves and resets under the action of the second spring, then the trigger block 7 automatically resets, the push block 19 moves and resets, the baffle 21 automatically resets, and the pinch roller 12 moves away from the driving block 14, after the mounting seat 14 is away from the driving block 3, the first gear 13 and the second gear 13 moves down, or the first gear 13 and the belt is prevented from falling down, or the problem of the belt is avoided, and the belt is prevented from falling down, or the first gear 13 is separated from the first gear 13.

Referring to fig. 1, 2, 7, 8-10, the clamping mechanism preferably comprises a plurality of sets of first toothed plates 6; the four groups of first toothed plates 6 are provided with cross grooves at the center of the top of the workbench 1, the four groups of first toothed plates 6 are respectively connected with the cross grooves in a sliding manner, the top of one end of each first toothed plate 6, which is far away from the driving block 3, is provided with a second clamping block 25, the outer side wall of a workpiece can be clamped and fixed through the second clamping block 25, the bottom of each supporting plate 16 is provided with a third tooth groove in transmission fit with the corresponding driven piece 17, the top of each first toothed plate 6 is in transmission connection with the corresponding supporting plate 16 through the corresponding driven piece 17, and when the supporting plate 16 moves to extend out of the supporting seat 2, the first toothed plates 6 can move relative to the driving block 3 through the corresponding driven piece 17 so as to be matched with the multiple groups of supporting plates 16 to form double clamping and fixing of the workpiece; the follower 17 includes a third gear and a fourth gear; the third gear and the fourth gear are in transmission connection through a belt or a chain, the third gear is arranged at a position, close to the trigger block 7, in the supporting seat 2 and meshed with the third tooth slot, the fourth gear is arranged below the third gear and in transmission with the first toothed plate 6 in a meshed manner, and the supporting plate 16 and the driven piece 17 synchronously move through the arrangement of the driven piece 17.

An elastic member (such as a spring or an elastic column) may be disposed between the end of the first toothed plate 6 far away from the second clamping block 25 and the inner wall of the workbench 1, so that the first toothed plate 6 can automatically move and reset after moving.

Further, in order to better match the turning work of the lathe on the workpiece, the situation that the clamping distance of the second clamping block 25 to the bottom outside the workpiece is too high is avoided, so that the turning process is influenced, preferably, the top of the second clamping block 25 is elastically connected with the first clamping block 5 through a sixth spring, the first clamping block 5 can freely stretch out and draw back on the second clamping block 25, one end, close to the supporting seat 2, of the first clamping block 5 is fixedly connected with the expansion plate 4, the height difference between the top end of the first clamping block 5 and the top end of the expansion plate 4 is equal to the height, which does not influence the turning work, of the bottom end of the workpiece, one end, far away from the first clamping block 5, of the expansion plate 4 is fixedly connected with the lantern ring 28, the lantern ring 28 is arranged on the periphery of the supporting seat 2 in a sliding sleeve mode, and the lantern ring 28 is elastically connected with the workbench 1; when placing the work piece on supporting seat 2 and carrying out centre gripping fixed, the bottom of work piece pushes down expansion plate 4, and then makes first grip block 5 down remove on second grip block 25, makes fixture throughout to the fixed high unanimity of work piece centre gripping through the cooperation of first grip block 5 and second grip block 25 to keep going on of turning work.

Still further, preferably, the bottom horizontal array of the first toothed plate 6 is provided with a second groove (not shown in the figure) for limiting the first toothed plate 6, the bottom of the first toothed plate 6 is provided with a fixing plate 9, the top of the fixing plate 9 is fixedly provided with a transverse plate, the transverse plate is arranged at one end position of the first toothed plate 6 far away from the second clamping block 25, the transverse plate is provided with a second protrusion in sliding fit with the second groove, the fixing plate 9 is arranged in a cross groove, one ends of multiple groups of fixing plates 9 close to the driving block 3 are fixedly connected with a square plate 29, the square plate 29 is integrally formed with multiple groups of fixing plates 9 through the square plate 29, synchronous movement of the fixing plate 9 is realized in such a way, the square plate 29 is in sliding fit with the inner wall of the cross groove, two ends of the top of the transverse plate are provided with connecting plates, the top ends of the connecting plates are rotationally connected with two ends of the fourth gear, and the fourth gear is pushed to separate from the third tooth groove when the fixing plate 9 moves in a direction. The one end fixedly connected with side's pipe 26 of supporting seat 2 is kept away from to first pinion rack 6, second grip block 25 and side's pipe 26 sliding elastic connection, the bottom fixedly connected with wedge 27 of second grip block 25, the bottom setting of wedge 27 is towards the inclined plane of fixed plate 9, the bottom slip laminating of wedge 27 has fly leaf 10, the lateral wall of fly leaf 10 and the top inner wall sliding connection of fixed plate 9, the one end and the side's pipe 26 elastic connection of fixed plate 9 are kept away from to fly leaf 10, the first stay cord 11 of bottom fixed connection of fixed plate 9, the one end and the sliding plate 8 fixed connection of fixed plate 9 are kept away from to first stay cord 11.

When the movable plate is particularly used, in an initial state, the first clamping block 5 protrudes out of the second clamping block 25, the second clamping block 25 is attached to one end, far away from the supporting seat 2, of the cross groove, the bottom of the wedge-shaped block 27 is matched with the top of the movable plate 10, and the fourth gear is meshed with the third tooth groove; when the supporting plate 16 extends out of the side wall of the supporting seat 2, the first toothed plate 6 moves relative to the supporting seat 2 through the driven piece 17, the first toothed plate 6 moves to enable the movable plate 10 to slide on the fixed plate 9, after the first clamping block 5 contacts with the outer wall of a workpiece, the first clamping block 5 drives the second clamping block 25 to move away from the movable plate 10, so that the wedge-shaped blocks 27 are separated from the movable plate 10, only after all the wedge-shaped blocks 27 are separated from the corresponding movable plate 10, the fixed plate 9 and the square plate 29 move upwards, the movable plate 10 moves upwards to push the transverse plate to move upwards, the transverse plate moves upwards to enable the second protrusion to be in limit fit with the second groove to limit the position of the first toothed plate 6, meanwhile, the connecting plate pushes the driven piece 17 to separate from the third tooth groove, and the supporting plate 16 is prevented from not completing supporting and fixing the inner part of the workpiece after the first clamping block 5 is completed, the supporting and fixing of the supporting plate 16 cannot be continued, and after the driven piece 17 and the third tooth groove are separated, the supporting plate 16 can continue to move independently to complete supporting and fixing; when the turning operation is completed, the sliding plate 8 is slid downwards, the sliding plate 8 moves to enable the movable plate 10 and the limiting ring 22 to move downwards to contact with limiting of the first toothed plate 6 and the supporting plate 16, the mounting seat 14 moves to be separated from the first tooth groove, then the first toothed plate 6, the supporting plate 16 and related structures move to return to the initial state, then the workpiece is removed, and the driving block 3 is automatically reset for the next use.

Claims (10)

1. A fluid pump turning positioning fixture comprises a workbench; the automatic clamping device is characterized in that a supporting seat is fixedly arranged at the center of the top of the workbench, a driving block is slidably arranged at the center of the top of the supporting seat, a supporting plate is arranged on the supporting seat along the center in an annular array, a transmission assembly is arranged in the side wall of the supporting seat, the supporting plate is in transmission connection with the driving block through the transmission assembly, a clamping mechanism is arranged on the workbench, the clamping mechanism is in transmission connection with the supporting plate through a driven piece, the driven piece is arranged in the supporting seat, and a sliding plate is slidably arranged on one side of the workbench;

when the driving block moves downwards, the driving block drives the supporting plate to move to extend out of the supporting seat through the transmission assembly, and when the supporting plate moves, the supporting plate drives the clamping mechanism to move in the opposite direction to the moving direction of the supporting plate through the driven piece.

2. The fluid pump turning positioning fixture according to claim 1, wherein a trigger block is arranged at one end of the support plate far away from the driving block, a rubber pad is fixedly arranged at one end of the trigger block far away from the support plate, and two sides of the support plate are elastically connected with the inner wall of the support seat through a first spring.

3. The fluid pump turning positioning fixture according to claim 2, wherein a first groove is formed in a horizontal array at the bottom center of the supporting plate, a limiting ring is embedded in the supporting seat in a sliding manner, a second spring is arranged between the limiting ring and the side wall of the supporting seat, a first protrusion is fixedly arranged at the top of the limiting ring and is positioned on the same horizontal line with the first groove, the first protrusion is in sliding fit with a group of first grooves, two groups of baffles are arranged between the first groove and the first protrusion, and one side, far away from the two groups of baffles, is elastically connected with the inner wall of the supporting seat.

4. The fluid pump turning positioning fixture according to claim 3, wherein a cavity is formed in one end, far away from the driving block, of the supporting plate, one end, close to the supporting plate, of the triggering block is in sealing elastic connection with the cavity, a pushing block is slidably embedded in one end, far away from the cavity, of the supporting plate, the cavity is communicated with the top of the pushing block, when the triggering block moves relative to the driving block, the pushing block moves to extend out of the supporting plate and is slidably matched with the baffle, a second pull rope is fixedly arranged at the bottom of the limiting ring along the circle center array, and one end, far away from the limiting ring, of the second pull rope is fixedly connected with the sliding plate.

5. The fluid pump turning positioning fixture of claim 2, wherein the drive assembly comprises a first gear and a second gear; the first gear and the second gear are connected through belt transmission, two ends of the first gear are fixedly connected with the top of the inner wall of the supporting seat through supporting rods, the second gear is rotatably provided with an installation seat, the second gear is elastically connected with the inner wall of the supporting seat through a third spring through the installation seat, a first tooth slot matched with the second gear is arranged on the driving block along the central array, and a second tooth slot matched with the first gear is arranged at the center of the top of the supporting plate.

6. The fluid pump turning positioning fixture according to claim 5, wherein a third pull rope is fixedly connected to one end, far away from the driving block, of the mounting seat, one end, far away from the mounting seat, of the third pull rope is fixedly connected with the sliding plate, a compression wheel is arranged between the first gear and the second gear, and the compression wheel is elastically and slidably arranged on the inner wall of the supporting seat.

7. The fluid pump turning positioning fixture of claim 1, wherein the clamping mechanism comprises a plurality of sets of first toothed plates; the top center of workstation has seted up the cross groove, first pinion rack and cross groove sliding connection, the one end top that the drive piece was kept away from to first pinion rack is provided with the second grip block, the bottom of backup pad is provided with the third tooth's socket with follower transmission complex, the top of first pinion rack is connected with the backup pad transmission through the follower.

8. The fluid pump turning positioning fixture according to claim 7, wherein the top of the second clamping block is elastically connected with the first clamping block through a fourth spring, one end of the first clamping block, which is close to the supporting seat, is fixedly connected with a telescopic plate, one end, which is far away from the first clamping block, of the telescopic plate is fixedly connected with a lantern ring, the lantern ring is slidably sleeved on the periphery of the supporting seat, and the lantern ring is elastically connected with the workbench.

9. The fluid pump turning positioning fixture according to claim 7, wherein a second groove is formed in the bottom horizontal array of the first toothed plate, a fixing plate is arranged at the bottom of the first toothed plate, a transverse plate is fixedly arranged at the top of the fixing plate, a second protrusion which is slidably matched with the second groove is arranged on the transverse plate, the fixing plate is arranged in the cross groove, one ends, close to the driving blocks, of the plurality of groups of fixing plates are fixedly connected with a square plate, and the square plate is slidably attached to the inner wall of the cross groove.

10. The fluid pump turning positioning fixture according to claim 9, wherein one end of the first toothed plate, which is far away from the supporting seat, is fixedly connected with a square tube, the second clamping block is in sliding elastic connection with the square tube, the bottom of the second clamping block is fixedly connected with a wedge block, the bottom of the wedge block is in sliding fit with a movable plate, the outer side wall of the movable plate is in sliding connection with the top inner wall of the fixed plate, one end of the movable plate, which is far away from the fixed plate, is in elastic connection with the square tube, the bottom of the fixed plate is fixedly connected with a first pull rope, and one end of the first pull rope, which is far away from the fixed plate, is fixedly connected with the sliding plate.