CN210435214U

CN210435214U - Die fastening device for producing auto parts

Info

Publication number: CN210435214U
Application number: CN201920689427.5U
Authority: CN
Inventors: 凌卫康; 罗永军; 刘玉英
Original assignee: Suzhou Zhuanchuang Photoelectric Technology Co ltd
Current assignee: Suzhou Yuntesheng Machinery Technology Co ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-05-01
Anticipated expiration: 2029-05-15

Abstract

The utility model belongs to the technical field of mold fastening, in particular to a mold fastening device for producing automobile accessories, which comprises two guide rails, a T-shaped pressing plate, a transmission rod, a gear A, a slide block and the like, wherein the two guide rails are symmetrically distributed and horizontally slide in parallel on a platform; the utility model discloses a2 rings of rotatory transmission pole to 3 rings can realize the fixed to the mould, shorten the time to the mould rigidity, improve the work efficiency of fixed mould position.

Description

Die fastening device for producing auto parts

Technical Field

The utility model belongs to the technical field of the mould fastening, especially, relate to a mould fastening device for producing auto-parts.

Background

Many automobile parts are generally formed by punching or punching, and for a punching die, in order to ensure that the precision and the smoothness of the produced automobile parts (commonly called as workpieces) meet the requirements in the actual production process, a die pressing plate is often adopted to clamp and fix the workpieces or a lower die holder in die machining, and the function of the die pressing plate is to ensure that the workpieces do not vibrate and do not shift in the machining process. The die pressing plate has the advantages of high strength, small volume and flexible and simple operation; however, when the height of the conventional die pressing plate is adjusted, the nut needs to be rotated for many times to adapt to the height of the die pressing plate because of the screw, so that the adjusting time is long, and the working efficiency is low. In order to adapt to workpieces with different heights as much as possible, the traditional die pressing plate needs to be replaced with die pressing plates of different models to compress and fix dies with different heights, and the replacement is complicated, so that the working efficiency is affected.

The utility model relates to a mould fastening device for producing auto-parts solves above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

For solving the above-mentioned defect among the prior art, the utility model discloses a mould fastener for producing auto-parts, it adopts following technical scheme to realize.

In the description of the present invention, it should be noted that the terms "inside", "below", "upper" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the equipment or elements indicated must have a specific position, be constructed or operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

A mould fastening device for producing auto-parts which characterized in that: the device comprises two guide rails which are symmetrically distributed and horizontally slide in parallel to a platform, a T-shaped pressing plate, a transfer rod with a hexagonal cap at the upper end, a gear A arranged at the lower end of the transfer rod, a threaded sleeve, an L plate, a sliding block, a toothed ring, a gear B, a limiting sleeve, a reset spring, a limiting block and a plate spring, wherein the sliding block vertically slides between the two guide rails; a through circular groove is formed in the center of the upper end face of the sliding block, a circular groove A is formed in the inner wall of the circular groove, and sliding grooves communicated with the circular groove are symmetrically formed in the end face, matched with the two guide rails, of the sliding block; the gear ring with the inner cylindrical surface as the tooth surface is embedded and rotates in the ring groove A; the end face of one end of the limiting sleeve is an inclined plane, and the end face of the other end of the limiting sleeve is provided with a stepped groove; the two limiting sleeves horizontally slide in the two sliding grooves respectively, and one ends of the two limiting sleeves with inclined planes are matched with two limiting grooves B symmetrically distributed on the outer cylindrical surface of the gear ring; a limiting block vertically slides in the stepped groove of each limiting sleeve, and one end of the limiting block is matched with a plurality of limiting grooves A vertically and uniformly distributed on the inner wall of the corresponding guide rail; the upper end surface and the lower end surface of each limiting block are respectively provided with two plate springs for resetting the vertical movement of the limiting block; and each limiting sleeve is provided with a return spring for returning the movement of the limiting sleeve.

The threaded sleeve is arranged above the sliding block through two L-shaped plates, and the center line of a threaded hole of the threaded sleeve is superposed with the center line of the circular groove; two pin shafts are symmetrically arranged in the gear ring respectively through a fixed seat fixedly connected with the sliding block, a gear B is arranged on each pin shaft, and the two gears B are meshed with the gear ring.

The T-shaped pressing plate positioned above the sliding block vertically slides between the two guide rails, and the central axis of a threaded hole in the upper end surface of the T-shaped pressing plate is superposed with the central axis of a threaded hole in the threaded sleeve below the T-shaped pressing plate; the external thread A on the outer circular surface of the upper end of the transfer rod is in threaded fit with the through threaded hole in the center of the upper end surface of the T-shaped pressing plate; the external thread B on the outer cylindrical surface in the middle of the transfer rod is in threaded fit with the threaded sleeve; the gear A is meshed with the two gears B simultaneously; the T-shaped pressing plate is matched with a die to be fixed; the pitch of the external thread A is smaller than that of the external thread B.

As a further improvement of the technology, the upper surface of the platform is provided with two trapezoidal guide grooves A which are parallel to each other; trapezoidal guide blocks A are respectively installed at the lower ends of the two guide rails, and the two trapezoidal guide blocks respectively slide in the two trapezoidal guide grooves A. The cooperation of trapezoidal guide slot A and trapezoidal guide block A makes two guide rails can smoothly slide on the platform.

As a further improvement of the technology, the inner wall of the limit sleeve is provided with a trapezoidal guide groove B; a trapezoidal guide block B is installed at one end of a limiting block located in the limiting sleeve and vertically slides in a trapezoidal guide groove B in the corresponding limiting sleeve.

As a further improvement of the technology, the plate spring is positioned in a groove with a larger cross section size in the corresponding stepped groove, one end of the plate spring is connected with the limiting sleeve, and the other end of the plate spring is connected with the inner wall of the groove with the larger cross section size in the corresponding stepped groove. The groove that the cross section size is great in the ladder groove provides accommodation space for the leaf spring, reduces the space restriction that the leaf spring moved to the stopper vertical direction.

As a further improvement of the technology, the inner walls of the two sliding chutes on the sliding block are respectively provided with a ring groove B along the circumferential direction.

As a further improvement of the technology, the two return springs are respectively positioned in the ring grooves B on the inner walls of the two sliding chutes; the two return springs are respectively nested on the corresponding limit sleeves; each limiting sleeve is provided with a tension spring plate, and each tension spring plate is positioned in the corresponding annular groove B; one end of each reset spring is connected with the inner wall of the corresponding ring groove B, and the other end of each reset spring is connected with the corresponding tension spring plate. The ring groove B provides a certain installation space for the return spring, so that the internal structure of the equipment is more compact.

As a further improvement of the technology, the annular gasket is nested on the transmission rod and is positioned between the hexagonal cap and the T-shaped pressure plate; a snap ring is fixedly arranged on the transfer rod and is positioned at the lower end of the external thread A. The annular gasket prevents the transmission rod fastened by the thread fit from loosening in the working process of the die.

As a further improvement of the technology, the pitch of the external thread a is smaller than that of the external thread B, so that when the hexagonal cap rotates the transmission rod to rotate for a few turns, the transmission rod drives the gear ring to rotate through the gear a and the gear B, and the rotating gear ring acts on the inclined surfaces of the two limiting sleeves, so that the two limiting sleeves drive the two limiting blocks through the corresponding trapezoidal guide blocks B to respectively and simultaneously enter the limiting grooves a on the corresponding guide rails, and the two limiting blocks fix the height positions of the sliding blocks on the guide rails; under the action of the positioned slide block, the thread pitch of the external thread A is smaller than that of the external thread B, so that the transfer rod is driven by the slide block in threaded fit with the transfer rod to rapidly move downwards along the guide rail and rapidly complete the fixation of the mold.

As a further improvement of the technology, a sharp corner formed by two crossed inclined planes is arranged between two adjacent limiting grooves A on the inner wall of the guide rail. When one end of the limiting block is not exactly opposite to the notch of the corresponding limiting groove A, under the interaction of the limiting block and the sharp-angled inclined surface, the sharp-angled inclined surface between two adjacent limiting grooves A can guide the limiting block to vertically move along the trapezoidal guide groove B, so that the corresponding four leaf springs deform, the limiting block displaces and enters the corresponding limiting groove, and the limitation and the fixation of the height position of the sliding block are completed.

As a further improvement of the technology, the thickness of the gear A is larger than that of the gear B, so that the gear A and the gear B cannot be separated from each other to damage the meshing relationship in the process of axial movement of the gear A.

As a further improvement of the technology, the thread turning directions of the external thread A and the external thread B are opposite, so that when the transmission rod rotates to fasten a workpiece or a die, the transmission rod drives the pressing plate to move downwards at a high speed and quickly press and fix the die or the workpiece. When the transmission rod is rotated to loosen the workpiece or the die, the transmission rod drives the pressing plate to move upwards and quickly release the pressing of the die or the workpiece.

Compared with the traditional mold fastening device, the fastening device in the utility model drives the gear ring to rotate through the gear A and the gear B when clamping and positioning the mold, and the notch edges of the two limiting grooves B on the gear ring act on the inclined planes of the two limiting sleeves, so that the two limiting sleeves respectively drive the two limiting blocks to move towards the limiting grooves on the corresponding guide rail inner wall and limit the upward movement of the slide block along the guide rail; the transfer rod is continuously rotated, and because the pitch of the external thread A on the transfer rod is smaller than that of the external thread B, the rotary transfer rod continuously moves downwards along the axial direction through the thread matching of the external thread A and a threaded hole of the pressing plate, and simultaneously, the transfer rod drives the sliding block to move upwards along the axial direction through the thread matching of the external thread B and the threaded sleeve, so that the speed of the limited sliding block driving the T-shaped pressing plate to quickly press the part of the die to be fixed through the external thread B, the transfer rod and the external thread A, and the die is fixed; the utility model can fix the mould by rotating the transmission rod for 2 to 3 circles, shorten the time for fixing the mould position and improve the working efficiency for fixing the mould position; in addition, when the limiting block moves towards the limiting groove A, one end of the limiting block meets a sharp corner part between two adjacent limiting grooves A, and the inclined plane of the sharp corner part acts on the limiting block which continues to move, so that the limiting block moves upwards or downwards along the trapezoidal guide groove B, and one end of the limiting block can still enter the limiting groove A under the condition that the limiting block is not in butt joint with the corresponding limiting groove A, and therefore the position fixing of the sliding block in the vertical direction is completed, the fixing of the die is favorably and quickly completed, and the working efficiency of the fixed die is improved; the utility model discloses simple structure has better result of use.

Drawings

Fig. 1 is a schematic view of a fastening device.

Fig. 2 is a schematic front sectional view of the fastening device.

FIG. 3 is a cross-sectional view of the T-shaped press plate, the transmission rod, the gasket, the external thread A and the snap ring.

FIG. 4 is a cross-sectional view of the guide rail, T-clamp, transfer rod, washer, external thread, and snap ring.

FIG. 5 is a cross-sectional view of the transmission rod, the external thread B, the thread bushing, the L-plate, the slider, the ring gear, the gear B and the gear A.

Fig. 6 is a schematic partial cross-sectional view of a fastening device.

FIG. 7 is a schematic sectional view of the guide rail, the slider, the gear ring, the gear B, the gear A, the stop collar, the return spring and the tension spring plate.

Fig. 8 is a schematic cross-sectional view of a guide rail and its components.

Fig. 9 is a schematic view of the fastener drive.

FIG. 10 is a cross-sectional view of the threaded sleeve, L-plate and slider assembly.

FIG. 11 shows the engagement of the transmission rod, the external thread A, the external thread B and the gear A.

Fig. 12 is a perspective view and two-view cross-sectional view of the stop collar.

FIG. 13 is a schematic cross-sectional view of the stop collar and the stop block.

Fig. 14 is a schematic cross-sectional view of the ring gear and its ring.

FIG. 15 is a simplified diagram of the die holder, die and platen in combination.

Number designation in the figures: 1. a platform; 2. a trapezoidal guide groove A; 3. a guide rail; 4. a limiting groove A; 5. a trapezoidal guide block A; 6. a T-shaped pressing plate; 7. a transfer lever; 8. an external thread A; 9. an external thread B; 10. a gear A; 11. a gasket; 12. a snap ring; 13. a threaded sleeve; 14. an L plate; 15. a slider; 16. a circular groove; 17. a ring groove A; 18. a chute; 19. a ring groove B; 20. a toothed ring; 21. a limiting groove B; 22. a gear B; 23. a pin shaft; 24. a fixed seat; 25. a limiting sleeve; 26. a stepped groove; 27. a trapezoidal guide groove B; 28. a return spring; 29. a tension spring plate; 30. a limiting block; 31. a trapezoidal guide block B; 32. a plate spring; 33. a hexagonal cap; 34. a die holder; 35. and (5) molding.

Detailed Description

The attached drawings are schematic diagrams of the implementation of the present invention in order to understand the structural operation principle. The specific product structure and the proportional size are determined according to the use environment and the conventional technology.

As shown in fig. 1 and 2, the device comprises two guide rails 3 which are symmetrically distributed and horizontally slide in parallel on a platform 1, a T-shaped pressing plate 6, a transmission rod 7 with a hexagonal cap 33 mounted at the upper end, a gear a10 mounted at the lower end of the transmission rod 7, a threaded sleeve 13, an L-shaped plate 14, a sliding block 15, a toothed ring 20, a gear B22, a limit sleeve 25, a return spring 28, a limit block 30 and a plate spring 32, wherein the sliding block 15 vertically slides between the two guide rails 3 as shown in fig. 2 and 6; as shown in fig. 10, a through circular groove 16 is arranged at the center of the upper end surface of the sliding block 15, a circular groove a17 is arranged on the inner wall of the circular groove 16, and sliding grooves 18 communicated with the circular groove 16 are symmetrically arranged on the end surfaces of the sliding block 15 matched with the two guide rails 3; as shown in fig. 5 and 6, the ring gear 20 with the inner cylindrical surface as the tooth surface is inserted and rotated in the ring groove a 17; as shown in fig. 12, one end face of the position-limiting sleeve 25 is an inclined face, and the other end face is provided with a stepped groove 26; as shown in fig. 6, 7 and 14, the two position-limiting sleeves 25 slide horizontally in the two sliding grooves 18, respectively, and one end of each position-limiting sleeve 25 with an inclined plane is matched with two position-limiting grooves B21 symmetrically distributed on the outer cylindrical surface of the gear ring 20; as shown in fig. 6, 8 and 13, a limiting block 30 vertically slides in the stepped groove 26 of each limiting sleeve 25, and one end of the limiting block 30 is matched with a plurality of limiting grooves a4 vertically and uniformly distributed on the inner wall of the corresponding guide rail 3; as shown in fig. 6, the upper and lower end surfaces of each stopper 30 are respectively provided with two leaf springs 32 for resetting the vertical movement of the stopper 30; as shown in fig. 6 and 7, each of the position restricting sleeves 25 is provided with a return spring 28 for returning the movement of the position restricting sleeve 25.

As shown in fig. 10, the threaded sleeve 13 is mounted above the sliding block 15 through two L-shaped plates 14, and the center line of the threaded hole of the threaded sleeve 13 is coincident with the center line of the circular groove 16; as shown in fig. 5 and 7, the two pins 23 are symmetrically installed in the toothed ring 20 through the fixing seats 24 fixedly connected to the sliders 15, a gear B22 is installed on each pin 23, and the two gears B22 are engaged with the toothed ring 20.

As shown in fig. 2, 4 and 9, the T-shaped pressing plate 6 above the sliding block 15 vertically slides between the two guide rails 3, and the central axis of the threaded hole of the upper end surface of the T-shaped pressing plate 6 coincides with the central axis of the threaded hole of the lower threaded sleeve 13; as shown in fig. 4, the external thread A8 on the outer circular surface of the upper end of the transfer rod 7 is in threaded fit with the through threaded hole at the center of the upper end surface of the T-shaped pressure plate 6; as shown in fig. 5, the external thread B9 on the outer cylindrical surface of the middle part of the transfer rod 7 is in threaded engagement with the threaded sleeve 13; as shown in fig. 5 and 7, the gear a10 meshes with two gears B22 simultaneously; as shown in fig. 15, the T-shaped platen 6 is fitted with a mold 35 to be fixed; as shown in fig. 11, the pitch of the external thread A8 is less than the pitch of the external thread B9.

As shown in fig. 1, the upper surface of the platform 1 is provided with two trapezoidal guide grooves a2 which are parallel to each other; as shown in fig. 2 and 8, trapezoidal guide blocks a5 are respectively mounted at the lower ends of the two guide rails 3, and the two trapezoidal guide blocks respectively slide in the two trapezoidal guide grooves a 2. The cooperation of the trapezoidal guide groove a2 and the trapezoidal guide block a5 allows the two guide rails 3 to smoothly slide on the platform 1.

As shown in fig. 12 and 13, the inner wall of the position-limiting sleeve 25 is provided with a trapezoidal guide groove B27; a trapezoidal guide block B31 is installed at one end of the limiting block 30 in the limiting sleeve 25, and the trapezoidal guide block B31 vertically slides in a trapezoidal guide groove B27 in the corresponding limiting sleeve 25.

As shown in fig. 6, the plate spring 32 is located in the groove having the larger cross-sectional dimension in the corresponding stepped groove 26, and one end of the plate spring 32 is connected to the stopper sleeve 25 and the other end is connected to the inner wall of the groove having the larger cross-sectional dimension in the corresponding stepped groove 26. The groove with the larger cross-sectional dimension in the stepped groove 26 provides a containing space for the plate spring 32, and reduces the space limitation of the plate spring 32 on the vertical movement of the limiting block 30.

As shown in fig. 10, the inner walls of the two sliding grooves 18 of the slider 15 are respectively provided with a ring groove B19 along the circumferential direction.

As shown in fig. 6 and 7, the two return springs 28 are respectively located in the annular grooves B19 on the inner walls of the two slide grooves 18; the two return springs 28 are respectively nested on the corresponding limiting sleeves 25; each limiting sleeve 25 is provided with a tension spring plate 29, and each tension spring plate 29 is positioned in the corresponding annular groove B19; each return spring 28 has one end connected to the inner wall of the corresponding ring groove B19 and the other end connected to the corresponding tension spring plate 29. The groove B19 provides a space for the return spring 28 to fit in, making the internal structure of the device more compact.

As shown in fig. 3 and 9, the annular gasket 11 is nested on the transmission rod 7, and the gasket 11 is positioned between the hexagonal cap 33 and the T-shaped pressure plate 6; the transfer rod 7 is fixedly provided with a snap ring 12, and the snap ring 12 is positioned at the lower end of the external thread A8. The annular gasket 11 prevents the transfer rod 7 fastened by the screw-fit from loosening during the operation of the mold 35.

As shown in fig. 3 and 11, the pitch of the external thread A8 is smaller than the pitch of the external thread B9, so that when the hexagonal cap 33 rotates the transmission rod 7 for a few turns, the transmission rod 7 drives the toothed ring 20 to rotate through the gear a10 and the gear B22, the rotating toothed ring 20 acts on the inclined surfaces of the two position-limiting sleeves 25, so that the two position-limiting sleeves 25 drive the two position-limiting blocks 30 through the corresponding trapezoidal guide blocks B31 to enter the position-limiting grooves a4 on the corresponding guide rails 3, respectively, and the two position-limiting blocks 30 fix the height positions of the sliding blocks 15 on the guide rails 3; the transfer rod 7 which continues to rotate is under the action of the positioned slide 15, and because the pitch of the external thread A8 is smaller than that of the external thread B9, the transfer rod 7 moves down the guide rail 3 quickly under the action of the slide 15 which is in threaded engagement with the transfer rod and completes the fixing of the mold 35 quickly.

As shown in fig. 8, two sharp corners formed by intersecting inclined surfaces are formed between two adjacent limiting grooves a4 on the inner wall of the guide rail 3. When one end of the limiting block 30 is not exactly opposite to the notch of the corresponding limiting groove A4, under the interaction of the limiting block 30 and the sharp-angled inclined surface, the sharp-angled inclined surface between two adjacent limiting grooves A4 can guide the limiting block 30 to vertically move along the trapezoidal guide groove B27, so that the corresponding four plate springs 32 are deformed, the limiting block 30 displaces and enters the corresponding limiting groove, and the limitation and the fixation of the height position of the sliding block 15 are further completed.

As shown in FIG. 5, the thickness of the gear A10 is greater than that of the gear B22, so that the gear A10 and the gear B22 cannot be separated from each other to break the meshing relationship in the process that the gear A10 moves along the axial direction.

As shown in fig. 11, the thread direction of the external thread A8 is opposite to that of the external thread B9, so that when the transfer rod 7 is rotated to fasten the workpiece or the die 35, the transfer rod 7 drives the pressing plate to move downwards at a high speed and quickly press and fix the die 35 or the workpiece. When the transmission rod 7 is rotated to loosen the workpiece or the die 35, the transmission rod drives the pressing plate to move upwards and quickly release the pressing of the die 35 or the workpiece.

As shown in fig. 15, the number of the die 35 fastening devices of the present invention is two, which are symmetrically distributed on the die 35 or both sides of the workpiece when the workpiece or the die 35 is clamped and fastened; in order to better clamp and fix the lower height die 35 or the workpiece, a die holder 34 is placed on the platform 1, the lower height die 35 or the workpiece is prevented from being connected with the die holder 34, and then the workpiece or the die 35 is fastened by two symmetrically distributed fastening devices.

The utility model discloses well gear A10, gear B22 makes gear A10 finally transmit the moment of torsion for ring gear 20 with the cooperation of ring gear 20 and obtains increasing, ring gear 20 makes the power increase on the closed angle inclined plane between two corresponding adjacent spacing grooves of two stopper 30 actions on two guide rails 3 through the inclined plane that acts on two stop collars 25, the closed angle inclined plane is to stopper 30's reaction force increase, make four leaf springs 32 that link to each other with stopper 30 take place deformation more easily, stopper 30 gets into corresponding spacing groove and accomplish the rigidity to slider 15 more easily under corresponding closed angle inclined plane effect fast, and then guarantee to just can realize the quick pulling of slider 15 to transmission lever 7 through spanner rotating hexagonal cap 332 circle or 3 circles, and then make transmission lever 7 drive the clamp plate accomplish the fixed to the position of mould 35.

The external thread A8 and the external thread B9 in the utility model are self-locking threads.

The utility model discloses a work flow: in an initial state, the slide block 15 is positioned at the bottom of the two guide rails 3, the limiting block 30 is positioned at the center of the stepped groove 26, and one end of the limiting block 30, which is matched with the limiting groove A4 on the guide rails 3, is positioned in the stepped groove 26; one end of each of the two limiting sleeves 25 with the inclined surface is positioned in two limiting grooves B21 on the outer cylindrical surface of the gear ring 20; the snap ring 12 is in contact with the lower end surface of the T-shaped press plate 6.

When a die 35 or a workpiece to be processed, which is already placed on a die holder 34 of the platform 1, needs to be fixed, the T-shaped pressing plate 6 is pulled upwards by hand, and all parts vertically sliding between the two guide rails 3 are driven by the T-shaped pressing plate 6 to be pulled from the bottoms of the two guide rails 3 to the tops of the two guide rails 3; then the two guide rails 3 are pushed to synchronously slide along the corresponding trapezoidal guide grooves A2, and the distance between the two guide rails 3 and the die 35 is adjusted; when the T-shaped platen 6 in the fastening device is located above the portion of the mold 35 that needs to be fixed, the adjustment of the position of the guide rail 3 is stopped.

Then the force acting on the T-shaped pressing plate 6 is removed, and all the components positioned between the two guide rails 3 freely fall along the two guide rails 3 under the action of gravity; when the lower end surface of the T-shaped pressing plate 6 is contacted with the upper end surface of the part needing to be fixed on the die 35, all parts between the two guide rails 3 stop sliding downwards; the hexagonal cap 33 is rotated by a wrench, and the hexagonal cap 33 drives the transmission rod 7 and the gear A10 arranged on the transmission rod 7 to synchronously rotate; under the action of the thread matching of the external thread A8 and the threaded hole on the T-shaped pressure plate 6, the transmission rod 7 drives the gear A10 to synchronously move vertically and downwards along the axial direction of the transmission rod 7; under the action of the threaded matching of the external thread B9 and the threaded sleeve 13, the threaded sleeve 13 drives the sliding block 15 and the toothed ring 20 to synchronously move upwards along the central axis of the transmission rod 7 through the two L-shaped plates 14; the slide block 15 drives the two gears B22 to synchronously move through the two fixed seats 24 and the two pin shafts 23; the two gears B22 and the gear A10 slide relatively but are still meshed; meanwhile, the gear A10 drives the gear ring 20 to rotate along the annular groove A17 through the two gears B22; the slide block 15 drives the toothed ring 20, the two limit sleeves 25, the two trapezoidal guide blocks B31 and the two limit blocks 30 to synchronously move upwards, and the edge of the notch of the two limit grooves B21 on the toothed ring 20 acts on the inclined planes on the two limit sleeves 25 respectively, so that the two limit sleeves 25 move towards the two guide rails 3 along the corresponding sliding grooves 18 respectively at the same time, and the two limit sleeves 25 drive the corresponding return springs 28 to stretch and store energy through the corresponding tension spring plates 29; the two limit sleeves 25 respectively drive the two limit blocks 30 to simultaneously move towards the corresponding limit grooves A4 on the two guide rails 3 through the corresponding trapezoidal guide blocks B31.

When the limiting blocks 30 are completely opposite to the corresponding limiting grooves A4, one ends of the two limiting blocks 30 respectively and directly enter the corresponding limiting grooves A4 at the same time and preliminarily fix the height position of the sliding block 15 between the two guide rails 3, and the two limiting sleeves 25 drive the corresponding return springs 28 to further stretch and store energy through the corresponding tension spring plates 29; one end of each limiting sleeve 25 with the inclined plane slides out of the corresponding limiting groove B21 and is in contact fit with the outer cylindrical surface of the gear ring 20, and the outer cylindrical surface of the gear ring 20 fixes the positions of the two limiting blocks 30 with one ends located in the corresponding limiting grooves A4 through the two limiting sleeves 25; continuing to rotate the hexagonal cap 33, the T-shaped pressing plate 6 is matched with the external thread A8, so that the transmission rod 7 continues to move downwards; the transfer rod 7 drives the slide block 15 to continue to move upwards through the external thread B9; the slide block 15 drives the two limit sleeves 25 to synchronously move upwards; since the two limit blocks 30 are limited by the corresponding limit grooves a4 and remain still, relative movement occurs between the two limit sleeves 25 and the corresponding limit blocks 30, respectively; the two plate springs 32 on the upper end face of each limiting block 30 are stretched and store energy, the two plate springs 32 on the lower end face are compressed and store energy, and the trapezoidal guide blocks B31 arranged on the end faces of the limiting blocks 30 slide downwards relative to the corresponding limiting sleeves 25 along the corresponding trapezoidal guide grooves B27; when the bottoms of the sliding grooves 18 of the two limiting sleeves 25 meet the lower end faces of the corresponding limiting blocks 30, the two limiting sleeves 25 stop moving under the action of the two limiting blocks 30, and the sliding block 15 stops moving; and continuing to rotate the hexagonal cap 33, wherein the hexagonal cap 33 compresses the gasket 11, the gasket 11 compresses the pressing plate, and the pressing plate compresses and fixes the die 35.

When the limiting blocks 30 are not completely opposite to the corresponding limiting grooves A4, one ends of the two limiting blocks 30 meet sharp-angled inclined surfaces between the two adjacent limiting grooves A4 on the inner wall of the corresponding guide rail 3, and one ends of the two limiting sleeves 25 with the inclined surfaces are not separated from the two limiting grooves B21 on the gear ring 20; continuing to rotate the hexagonal cap 33, so that the transfer rod 7 drives the slide block 15 to move upwards through the external thread B9; meanwhile, the gear A10 drives the gear ring 20 to continue rotating through the gear B22, the notch edges of the two limiting grooves B21 on the gear ring 20 continue acting on the inclined surfaces of the two limiting sleeves 25, the two limiting sleeves 25 respectively drive the two limiting blocks 30 through the corresponding trapezoid guide blocks B31 to press the sharp-angled inclined surfaces between the corresponding two adjacent limiting grooves A4, and under the reaction of the sharp-angled inclined surfaces, the sharp-angled inclined surfaces enable the two limiting blocks 30 to move downwards or upwards along the corresponding trapezoid guide grooves B27; the two leaf springs 32 on the upper end face of each limiting block 30 are stretched or compressed, and the two leaf springs 32 on the lower end face are compressed or stretched; the two limiting blocks 30 perform self-adaptive motion under the action of the corresponding sharp-angled inclined surfaces; when one end of each of the two limiting blocks 30 completely faces the corresponding limiting groove, under the action of the gear ring 20 which continuously rotates, one end of each of the two limiting blocks 30 respectively enters the limiting groove A4 on each of the two guide rails 3, one end of each of the two limiting sleeves 25, which is provided with an inclined plane, slides out of the corresponding limiting groove B21 and is in contact fit with the outer cylindrical surface of the gear ring 20, the outer cylindrical surface of the gear ring 20 fixes the positions of the two limiting blocks 30, one ends of which are located in the corresponding limiting grooves A4, through the two limiting sleeves 25, and forms a primary fixation of the height position of the sliding block 15 on the guide rail 3, and the two limiting sleeves 25 drive the corresponding return springs 28 to further stretch and store energy through the corresponding tension spring plates 29; continuing to rotate the hexagonal cap 33, the T-shaped pressing plate 6 is matched with the external thread A8, so that the transmission rod 7 continues to move downwards; the transfer rod 7 drives the slide block 15 to continue to move upwards through the external thread B9; the slide block 15 drives the two limit sleeves 25 to synchronously move upwards; since the two limit blocks 30 are limited by the corresponding limit grooves a4 and remain still, relative movement occurs between the two limit sleeves 25 and the corresponding limit blocks 30, respectively; the two plate springs 32 on the upper end face of each limiting block 30 are stretched and store energy, the two plate springs 32 on the lower end face are compressed and store energy, and the trapezoidal guide blocks B31 arranged on the end faces of the limiting blocks 30 slide downwards relative to the corresponding limiting sleeves 25 along the corresponding trapezoidal guide grooves B27; when the bottoms of the sliding grooves 18 of the two limiting sleeves 25 meet the lower end faces of the corresponding limiting blocks 30, the two limiting sleeves 25 stop moving under the action of the two limiting blocks 30, and the sliding block 15 stops moving; and continuing to rotate the hexagonal cap 33, wherein the hexagonal cap 33 compresses the gasket 11, the gasket 11 compresses the pressing plate, and the pressing plate compresses and fixes the die 35.

In the process of pressing and fixing the die 35, since the thread pitch of the external thread A8 is smaller than that of the external thread B9, the transmission rod 7 can be pressed and fixed quickly by the T-shaped pressing plate 6 driven by the hexagon cap 33 and the gasket 11 by only turning the hexagon cap 332 or 3 turns.

When the use of the fastening device is finished, the hexagonal cap 33 is reversely rotated, and the transfer rod 7 moves upwards under the thread matching action of the external thread A8 and the T-shaped pressing plate 6; the gear A10 rotating synchronously with the transmission rod 7 drives the gear to rotate reversely through two gears B22; the two limit grooves B21 on the toothed ring 20 are opposite to the two limit sleeves 25 again, under the reset action of the two reset springs 28, one ends of the two limit sleeves 25 with the inclined planes enter the corresponding limit grooves B21 again, the two limit sleeves 25 drive the two limit blocks 30 to separate from the limit grooves a4 on the two guide rails 3 and remove the limitation on the movement of the slide block 15 through the corresponding trapezoid guide blocks B31, and under the reset action of the corresponding four plate springs 32, the two limit blocks 30 move to the initial positions in the corresponding limit sleeves 25 along the corresponding trapezoid guide grooves B27 respectively; continuing to rotate the hexagonal cap 33, the transfer rod 7 drives the slider 15 to move downwards along the central axis of the transfer rod 7 through the external thread B9, so that the gear A10 moves to the initial relative position of the two gears B22; meanwhile, the external thread B9 drives the slide block 15 to move downwards through the thread bush 13 and the two L-shaped plates 14; when the snap ring 12 on the transmission rod 7 is contacted with the lower end surface of the T-shaped pressing plate 6, the movement of the transmission rod 7 is stopped, and the distance between the slide block 15 and the T-shaped pressing plate 6 is recovered to the distance of the original state; the T-shaped pressing plate 6 is used for releasing the pressing and fixing of the die 35, the two guide rails 3 are pushed by hands to leave the die 35 along the trapezoid guide grooves A2, and after the hands are released, all parts vertically sliding between the two guide rails 3 fall to the bottoms of the two guide rails 3 and return to the initial positions under the action of the dead weights.

For traditional mould 35 clamp plate in order to adapt to the work piece of co-altitude as far as possible, the mould 35 clamp plate that needs to change different models compresses tightly fixedly to the mould 35 of co-altitude not, the utility model discloses can compress tightly fixedly to the work piece of co-altitude not or mould 35, avoid frequently changing the work efficiency that mould 35 clamp plate leads to because of adapting to die 35 or the work piece of co-altitude not low.

To sum up, the utility model has the advantages that: when the fastening device in the utility model clamps and positions the mold 35, the rotary transmission rod 7 drives the gear ring 20 to rotate through the gear and the gear B22, and the notch edges of the two limiting grooves B21 on the gear ring 20 act on the inclined planes of the two limiting sleeves 25, so that the two limiting sleeves 25 respectively drive the two limiting blocks 30 to move towards the limiting grooves on the inner wall of the corresponding guide rail 3 and limit the upward movement of the slide block 15 along the guide rail 3; the transfer rod 7 is continuously rotated, and because the pitch of the external thread A8 on the transfer rod is smaller than that of the external thread B9, the rotary transfer rod 7 continuously moves downwards along the axial direction through the threaded matching of the external thread A8 and a press plate threaded hole, and simultaneously, the transfer rod 7 drives the slide block 15 to move upwards along the axial direction through the threaded matching of the external thread B9 and the threaded sleeve 13, so that the speed of the limited slide block 15 driving the T-shaped press plate 6 to quickly press against a part of the die 35 to be fixed through the external thread B9, the transfer rod 7 and the external thread A8, and the die 35 is fixed; the utility model can fix the die 35 by rotating the transmission rod 72 to 3 circles, shorten the time for fixing the die 35, and improve the working efficiency for fixing the die 35; in addition, when the limiting block 30 moves towards the limiting groove a4, one end of the limiting block 30 meets the sharp corner part between two adjacent limiting grooves a4, and the inclined surface of the sharp corner part acts on the limiting block 30 which continues to move, so that the limiting block 30 moves upwards or downwards along the trapezoidal guide groove B27, and one end of the limiting block 30 can still enter the limiting groove a4 under the condition that the limiting block is not in butt joint with the corresponding limiting groove a4, thereby completing the position fixing of the sliding block 15 in the vertical direction, being beneficial to quickly completing the fixing of the die 35, and further improving the working efficiency of the fixed die 35; the utility model discloses can compress tightly fixedly work piece or mould 35 to co-altitude not, further improve work efficiency.

Claims

1. A mould fastening device for producing auto-parts which characterized in that: the device comprises two guide rails which are symmetrically distributed and horizontally slide in parallel to a platform, a T-shaped pressing plate, a transfer rod with a hexagonal cap at the upper end, a gear A arranged at the lower end of the transfer rod, a threaded sleeve, an L plate, a sliding block, a toothed ring, a gear B, a limiting sleeve, a reset spring, a limiting block and a plate spring, wherein the sliding block vertically slides between the two guide rails; a through circular groove is formed in the center of the upper end face of the sliding block, a circular groove A is formed in the inner wall of the circular groove, and sliding grooves communicated with the circular groove are symmetrically formed in the end face, matched with the two guide rails, of the sliding block; the gear ring with the inner cylindrical surface as the tooth surface is embedded and rotates in the ring groove A; the end face of one end of the limiting sleeve is an inclined plane, and the end face of the other end of the limiting sleeve is provided with a stepped groove; the two limiting sleeves horizontally slide in the two sliding grooves respectively, and one ends of the two limiting sleeves with inclined planes are matched with two limiting grooves B symmetrically distributed on the outer cylindrical surface of the gear ring; a limiting block vertically slides in the stepped groove of each limiting sleeve, and one end of the limiting block is matched with a plurality of limiting grooves A vertically and uniformly distributed on the inner wall of the corresponding guide rail; the upper end surface and the lower end surface of each limiting block are respectively provided with two plate springs for resetting the vertical movement of the limiting block; each limit sleeve is provided with a return spring for returning the movement of the limit sleeve;

the threaded sleeve is arranged above the sliding block through two L-shaped plates, and the center line of a threaded hole of the threaded sleeve is superposed with the center line of the circular groove; two pin shafts are symmetrically arranged in the gear ring through fixed seats fixedly connected with the sliding blocks respectively, a gear B is arranged on each pin shaft, and the two gears B are meshed with the gear ring;

2. A mold fastening device for producing an automobile part according to claim 1, characterized in that: the upper surface of the platform is provided with two trapezoidal guide grooves A which are parallel to each other; trapezoidal guide blocks A are respectively installed at the lower ends of the two guide rails, and the two trapezoidal guide blocks respectively slide in the two trapezoidal guide grooves A.

3. A mold fastening device for producing an automobile part according to claim 1, characterized in that: the inner wall of the limiting sleeve is provided with a trapezoidal guide groove B; a trapezoidal guide block B is installed at one end of a limiting block located in the limiting sleeve and vertically slides in a trapezoidal guide groove B in the corresponding limiting sleeve.

4. A mold fastening device for producing an automobile part according to claim 1, characterized in that: the plate spring is positioned in a groove with the largest cross section size in the corresponding stepped groove, one end of the plate spring is connected with the limiting sleeve, and the other end of the plate spring is connected with the inner wall of the groove with the largest cross section size in the corresponding stepped groove.