CN220078292U - Numerical control lifting appliance - Google Patents

Abstract

The utility model discloses a numerical control lifting appliance, which relates to the field of heat treatment quenching technology, and comprises a plurality of sliding mechanisms which are arranged on a horizontal lifting frame and can move linearly, wherein sliding lines of the sliding mechanisms are distributed in an equiangular radial manner; each sliding mechanism is hinged with a suspender positioned below the sliding mechanism; the sliding mechanism is also hinged with the top end of the telescopic mechanism, and the bottom end of the telescopic mechanism is hinged with the side wall of the suspension rod; the bottom of the suspender is provided with an adjusting rod for supporting a workpiece; the sliding mechanism is also connected with a power mechanism capable of driving the sliding mechanism to move. The utility model realizes the clamping of workpieces with various sizes.

Description

Numerical control lifting appliance

Technical Field

The utility model relates to the field of heat treatment quenching technology, in particular to a numerical control lifting appliance.

Background

The heat treatment of the bearing sleeve is critical to the dimensional stability, fatigue, stress and the like of the bearing sleeve in the use process. Carburization treatment can greatly improve the service performance of the bearing. After carburization, the bearing sleeve needs to be quenched for the second time, namely, the carburized workpiece is heated to a certain temperature and kept for a certain time, and then cooled at a proper speed, so that the material with the high-carbon martensite on the surface and the lath martensite inside is obtained.

The greater the deformation of the bearing housing after heat treatment, the more material needs to be removed in subsequent machining to achieve the desired dimensional and shape tolerances. Therefore, the reduction of the deformation of the bearing sleeve after heat treatment can reduce the subsequent machining cost, and meanwhile, the uniform thickness of the carburized layer of the bearing sleeve can also be maintained, so that the service life of the bearing is prolonged.

CN110184433a discloses a combined stamper;

CN109722515a discloses a stamper;

CN109943694a discloses a stamper;

CN109943702a discloses a rotary quenching system;

the basic principle of the quenching device is that an inner die and an outer die are arranged, the inner die is conical, the periphery of the outer die is used for placing a workpiece, and before quenching, the conical inner die is embedded into the outer die, so that the outer die moves outwards to tighten the workpiece, and the workpiece is not easy to deform in the quenching process. The inner die and the outer film are one group, and can be only one group, or can be arranged in a mirror image manner, so that the upper die and the lower die are included, and the inner die and the outer die are both included in the upper die and the lower die.

However, in the compression molding schemes disclosed in the above several patents, there are the following problems:

1) For how to enable the inner die to be embedded into the outer die, the scheme disclosed in CN110184433A is that a telescopic rod mechanism is used for pushing the inner die so as to enable the inner die to be embedded into the outer die, in the mode, the telescopic rod mechanism is arranged to be a worm jack, compaction can be achieved only by using the movement of a screw-driven worm jack, the structure is complex, and a plurality of screw-driven mechanisms are easy to interfere with other operation steps; and in the process of rotating in the pool after the compaction is finished, a sufficient compaction force cannot be provided because the compaction is performed only by the form of the screw thread. Even with hydraulic jacks, the hydraulic jacks need to follow the die into the pool for quenching, which makes the quenching process more complicated.

2) The quenching system disclosed in the prior patent, such as CN109943702a, does not have automation, and many operation flows need to be manually performed, so that the quenching system is not beneficial to be introduced into automated pipeline production, and has low efficiency.

3) For workpieces with various sizes, the corresponding manipulator needs to be replaced for clamping, which is troublesome.

4) How to realize the hoisting and transportation of the processed workpiece.

Disclosure of Invention

Aiming at the fourth problem, the utility model provides a numerical control lifting appliance so as to facilitate clamping and moving of workpieces with different sizes, thereby laying a foundation for automatic production.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a numerical control lifting appliance comprises a plurality of sliding mechanisms which are arranged on a horizontal lifting frame and can move linearly, wherein sliding lines of the sliding mechanisms are distributed in an equiangular radial manner; each sliding mechanism is hinged with a suspender positioned below the sliding mechanism; the sliding mechanism is also hinged with the top end of the telescopic mechanism, and the bottom end of the telescopic mechanism is hinged with the side wall of the suspension rod; the bottom of the suspender is provided with an adjusting rod for supporting a workpiece; the sliding mechanism is also connected with a power mechanism capable of driving the sliding mechanism to move.

The sliding machine framework is arranged on the motor linear guide rail which is arranged on the hanger and is distributed in an equiangular radial mode, and the sliding mechanism is arranged on the motor linear guide rail.

The power mechanism is a lifting appliance motor, and the lifting appliance motor is fixed at the outer end of the linear guide rail of the motor.

The included angles of sliding lines of two adjacent sliding mechanisms are all degrees.

The sliding mechanism comprises a lifting appliance sliding block arranged on the motor linear guide rail and a moving block fixed below the lifting appliance sliding block, and the top end of the lifting rod and the top end of the telescopic mechanism are both hinged to the moving block.

The telescopic mechanism is an electric push rod.

The bottom of the telescopic mechanism is a telescopic end.

The telescopic mechanism is hinged to the middle side wall of the adjacent suspender.

The adjusting rod is perpendicular to the extending direction of the suspender.

The bottom of the suspender is provided with a chute perpendicular to the extending direction of the suspender, and the adjusting rod is embedded in the chute in a sliding way and can adjust the fixing position through a fastener.

The utility model has the advantages compared with the prior art that:

the numerical control lifting appliance adopts the motor linear guide rail, the sliding block, the moving block and the like to drive the lifting rod to move, so that the top of the lifting rod can move, and the additionally arranged electric push rod can realize the movement of the bottom of the lifting rod. The movable four suspenders are arranged, so that the suspenders can clamp workpieces of various sizes, the application range of workpiece clamping is greatly improved, and the top of the numerical control lifting appliance can be provided with a moving mechanism, so that the numerical control lifting appliance and the workpieces can move integrally.

Drawings

FIG. 1 is a side view of a workpiece of the present utility model in a lifting position of a numerically controlled spreader;

FIG. 2 is a top view of the workpiece of the present utility model in a lifting position of the numerically controlled spreader;

FIG. 3 is a side view of a numerically controlled spreader of the present utility model gripping a workpiece;

FIG. 4 is a side view of the numerically controlled spreader of the present utility model lifting a workpiece;

FIG. 5 is a side view of the numerically controlled spreader of the present utility model hanging a workpiece to a position above a lower die;

FIG. 6 is a side view of the numerically controlled spreader of the present utility model mounting a workpiece to a lower die;

FIG. 7 is a side view of the numerically controlled spreader of the present utility model raised after the workpiece is mounted to the lower die;

FIG. 8 is a side view of the numerically controlled spreader of the present utility model returning to its original position;

FIG. 9 is a side view of the hold-down mechanism of the present utility model moved to a position above the lower die;

FIG. 10 is a side view of the compression mechanism of the present utility model embedded in a lower die;

FIG. 11 is a side view of the upper mechanism of the hold-down mechanism of the present utility model raised;

FIG. 12 is a side view of the lifting rotary platform of the present utility model lowered into a quench bath for quenching;

fig. 13 is a side view of the compression spring mechanism of the present utility model;

FIG. 14 is a side view of the push-pull collapsible mechanism of the present utility model;

FIG. 15 is a side view of the hold-down mechanism of the present utility model;

FIG. 16 is a schematic view of a compression device of the present utility model;

FIG. 17 is a side view of the push-pull block of the present utility model with protrusions;

FIG. 18 is a side view of the push-pull block of the present utility model retracted;

FIG. 19 is a side view of a push-pull rod of the present utility model;

FIG. 20 is a side view of a push-pull cylinder of the present utility model;

FIG. 21 is a top view of the push-pull block of the present utility model with protrusions;

FIG. 22 is a top view of the push-pull block of the present utility model when retracted;

FIG. 23 is a top view of a push-pull cartridge of the present utility model;

FIG. 24 is a side view of the digitally controlled spreader of the present utility model;

FIG. 25 is a top view of the digitally controlled spreader of the present utility model;

FIG. 26 is a side view of the automated sled mechanism of the present utility model;

FIG. 27 is a top view of the automated sled mechanism of the present utility model;

FIG. 28 is a front view of the automated sled mechanism of the present utility model;

FIG. 29 is a schematic view of the automatic locking mechanism of the present utility model;

FIG. 30 is a side view of a lifting lug of the present utility model;

FIG. 31 is a front view of a shackle of the present utility model;

FIG. 32 is a side view of the bail of the present utility model;

figure 33 is a front view of the bail of the present utility model.

In the figure, 1, a push-pull cylinder, 2, a push-pull rod, 3, a push-pull ball, 4, a support ball, 5, a push-pull box spring, 6, a push-pull box, 7, a push-pull cone, 8, a push-pull block, 9, a push-pull block spring, 10, a limit pressing plate, 11, a push-pull hydraulic lifting cylinder, 12, a fixed top block, 13, a lifting rod, 14, a first fastening mechanism fixing plate, 15, a lifting ring, 16, a lifting lug, 17, an upper top plate, 18, an upper die fixing plate, 19, a driven material returning pressing plate, 20, an outer die, 21, an inner die, 22, a support lifting plate, 23, a driven material returning bar, 24, a driving material returning bar, 25, a pressure spring, 26, a material returning bar limit column, 27, a locking nut, 28 and a driving material returning pressing plate, 29, a supporting frame, 30, an automatic pulley, 31, a pulley motor, 32, a rack, 33, a pulley guide rail, 34, a hanger, 35, a moving block, 36, a hanger rod, 37, an electric push rod, 38, an adjusting rod, 39, a lifting appliance motor, 40, an automatic locking mechanism, 41, a feeding mechanism, 42, a workpiece, 43, a numerical control lifting appliance, 44, a pressing mechanism, 45, an automatic pulley mechanism, 46, a lifting appliance lifting hydraulic cylinder, 47, a track, 48, a supporting piece, 49, a pressing mechanism hydraulic lifting cylinder, 50, a push-pull expansion mechanism, 51, a lifting rotating platform, 52, a lower base plate, 53, a plugging plate, 54, an auxiliary limiting plate, 55 and a pressure spring mechanism.

Detailed Description

The following describes specific embodiments of the present utility model with reference to the drawings.

As shown in fig. 1 to 33, the present utility model comprises a quenching bath for containing a heat treatment liquid, a lifting and rotating platform 51 is provided above the quenching bath, a lower base plate 52 of a pressing mold is provided on the lifting and rotating platform 51, and a forming mold is provided on the lower base plate 52, the forming mold is provided as a single group or as upper and lower molds of upper and lower groups, respectively, each of the upper and lower molds comprising an inner mold 21 and an outer mold 20; the system further comprises:

the automatic pulley mechanism 45 is provided with a lifting numerical control lifting appliance 43 and a lifting pressing mechanism 44 through two automatic pulleys 30 respectively; the numerical control lifting appliance 43 is used for lifting the workpiece 42, and the upper top plate 17 for pressing the tire mold is fixed on the pressing mechanism 44;

the feeding mechanism 41, the feeding mechanism 41 is provided with a support 48 for supporting the workpiece 42.

When the tire molds are provided in two sets, the upper mold is also fixed to the pressing mechanism 44.

The feeding mechanism 41 comprises a plurality of parallel rollers and a crawler belt 47 wrapped around the rollers; the support 48 is provided on the crawler belt 47.

The support members 48 are at least two parallel, and the top of each support member 48 is a linear contact surface or a strip contact surface.

The automatic pulley mechanism 45 comprises a supporting frame 29, and two horizontal opposite edges at the top of the supporting frame 29 are jointly slid and erected with two automatic pulleys 30 through pulley guide rails 33; at least one of the two horizontal opposite sides is further provided with a rack 32, the rack 32 is meshed with two gears, the two gears are respectively fixed on the rotating shafts of the two pulley motors 31, and the two pulley motors 31 are respectively fixed on the side surfaces of the two automatic pulleys 30.

The two automatic pulleys 30 are respectively fixed with fixed ends of two lifting mechanisms, and the telescopic ends of the two lifting mechanisms respectively extend vertically downwards and are respectively connected with the pressing mechanism 44 and the numerical control lifting appliance 43.

The two lifting mechanisms are a pressing mechanism hydraulic lifting cylinder 49 and a lifting appliance lifting hydraulic cylinder 46 respectively.

The support frame 29 includes outer frames forming a rectangular parallelepiped frame, and reinforcing frames disposed between the outer frames; the bottom frame of the outer frame is fixed on a fixed base at the periphery of the lifting rotary platform 51; the elevating rotation platform 51 is located at the center area of the bottom frame.

The numerical control lifting appliance 43 comprises four motor linear guide rails which are arranged on the horizontal lifting frame 34 and distributed at equal angles of 90 degrees, wherein lifting appliance sliding blocks are arranged on each motor linear guide rail, and the lifting appliance sliding blocks are driven to move through lifting appliance motors 39; the bottom of the lifting appliance sliding block is fixedly provided with moving blocks 35, the bottom of each moving block 35 is hinged with the top end of one lifting rod 36 and the fixed end of one electric push rod 37, and the telescopic end of the electric push rod 37 is hinged with the side wall of the adjacent lifting rod 36;

an adjustment bar 38 is provided inwardly at the bottom end of the boom 36 perpendicular to the direction of extension of the boom 36.

The bottom end of the boom 36 is provided with a chute perpendicular to the extending direction of the boom 36, and an adjusting rod 38 is slidably inserted into the chute and can be adjusted in a fixed position by a fastener.

The fastener is a clamping nut.

The sling motor 39 is fixed to the outer end of the motor linear guide.

The telescoping end of the electrical push rod 37 is hinged to the medial side wall of the adjacent boom 36.

The compressing mechanism 44 comprises an internally positioned push-pull expanding mechanism 50 and an externally positioned compression spring mechanism 55;

the push-pull expansion mechanism 50 comprises a push-pull column body 1, a central shaft channel is arranged at the central shaft of the push-pull column body 1, and a large cavity area is expanded at the bottom of the central shaft channel; a push-pull rod 2 is slidably embedded in the middle shaft channel, and a push-pull cone 7 positioned in the cavity area is fixed at the bottom end of the push-pull rod 2;

the push-pull column body 1 is provided with a plurality of push-pull block channels communicated with the outside along the radial direction at the same angle in the position of the cavity area, each push-pull block channel is internally provided with one push-pull block 8 in a sliding way, a push-pull block spring 9 which surrounds the periphery of the push-pull column body 1 is connected between the outer side walls of two adjacent push-pull blocks 8, and annular embedded inlets for accommodating the push-pull block springs 9 are respectively arranged on the outer wall of the push-pull column body 1 and the outer wall of the push-pull block 8;

the outer side wall of the push-pull cone 7 is contacted with the inner side wall of the push-pull block 8 by an inclined surface; when the push-pull rod 2 pulls the push-pull cone 7 to move to the upper limit, the push-pull cone 7 pushes the push-pull block 8 to overcome the elastic action of the push-pull block spring 9 and slide and protrude out of the outer side wall of the push-pull cylinder 1; when the push-pull rod 2 moves to the bottom dead center, the push-pull block 8 retracts into the push-pull cylinder 1 under the action of the elastic force of the push-pull block spring 9;

the top end of the push-pull rod 2 protrudes out of the middle shaft channel and is fixed with a push-pull ball 3;

the upper outer side wall of the push-pull column body 1 is also fixed with a limit pressing plate 10;

the automatic pulley 30 is fixedly provided with a pressing mechanism hydraulic lifting cylinder 49, the telescopic end of the pressing mechanism hydraulic lifting cylinder 49 extends vertically downwards and is used for lifting the fixed end of the push-pull hydraulic lifting cylinder 11 arranged at the top of the push-pull expansion mechanism 50 and the fixed jacking block 12 arranged at the top of the pressure spring mechanism 55;

the telescopic end of the push-pull hydraulic lifting cylinder 11 is connected with a push-pull box 6, and a vertical through push-pull box vertical channel is arranged in the middle of the push-pull box 6; the push-pull ball 3 can be embedded in the vertical channel of the push-pull box in a sliding way from bottom to top;

the push-pull box 6 is internally provided with four horizontal push-pull box channels which are communicated with the vertical push-pull box channels and distributed at right angles, each horizontal push-pull box channel is internally fixed with a supporting ball 4 through a push-pull box spring 5, and the four supporting balls 4 can stretch out to the vertical push-pull box channels under the action of elasticity;

the fixed top block 12 vertically extends downwards to form a plurality of lifting rods 13, the bottom end of each lifting rod 13 is connected with a first fastening mechanism, each first fastening mechanism is detachably connected with a second fastening mechanism, and the bottoms of the second fastening mechanisms are jointly fixed on the top surface of the upper top plate 17; an automatic locking mechanism 40 is arranged in cooperation with the first fastening mechanism and the second fastening mechanism;

the push-pull column body 1 vertically slides through the middle part of the upper top plate 17; a pressure spring 25 is arranged above the upper top plate 17 around the push-pull column body 1, and a limiting pressing plate 10 is arranged above the pressure spring 25 in a pressing mode and is limited below the fixed top block 12;

the lifting rotary platform 51 is provided with a groove for the push-pull block 8 to be embedded in a protruding mode, and when the push-pull block 8 is embedded in and fixed to the groove, a gap is reserved between the limiting pressing plate 10 and the fixed top block 12.

When the tire mold is arranged into an upper group and a lower group: a driven material returning pressing plate 19 is slidably embedded in the middle of the bottom surface of the upper top plate 17, an upper die fixing plate 18 fixed on the periphery of the bottom surface of the upper top plate 17 is arranged below the driven material returning pressing plate 19, and a material returning gap is reserved between the upper die fixing plate 18 and the driven material returning pressing plate 19;

a driving material returning rod 24 is slidably arranged above the upper top plate 17 through a hollow vertical material returning rod limiting column 26, and the bottom end of the driving material returning rod 24 is slidably embedded in the upper top plate 17 and is propped against the driven material returning pressing plate 19;

the limiting pressing plate 10 is arranged above the active material returning rod 24, and a material returning gap is reserved between the limiting pressing plate and the active material returning rod 24;

the outer die 20 of the upper die is fixed on the bottom surface of the upper die fixing plate 18, a supporting hanging plate 22 is supported below the inner die 21 of the upper die, and the supporting hanging plate 22 is hung on the upper die fixing plate 18 through a hanging column with a play gap; a driven material returning rod 23 which is propped between the bottom surface of the driven material returning pressing plate 19 and the top surface of the inner die 21 is arranged through the upper die fixing plate 18;

the bottom end of the push-pull cylinder 1 slides through the central opening of the inner die 21 of the upper die.

A plugging plate 53 for plugging the central shaft channel is fixed on the bottom surface of the push-pull column body 1.

The outer side wall of the push-pull column body 1 is connected with the upper top plate 17 in a sliding manner through a key position.

The plurality of first fastening mechanisms are each fixed to the lift lever 13 by the same horizontal first fastening mechanism fixing plate 14.

A limiting block for limiting the compression spring 25 is arranged below the first fastening mechanism fixing plate 14.

The upper part of the pressure spring 25 is sleeved with a sleeve which can slide up and down.

An auxiliary limiting plate 54 is fixed on the outer wall of the push-pull column body 1 at a position close to the lower part of the upper top plate 17, and the upper top plate 17 is limited above the auxiliary limiting plate 54.

The first fastening mechanism is a lifting ring 15, and the second fastening mechanism is a lifting lug 16; an automatic locking mechanism 40 is fixed at the side wall of the lifting ring 15, and the automatic locking mechanism 40 comprises a motor and a bolt which can be controlled by the motor and is used for inserting the lifting ring 15 and fixing the lifting lug 16.

The limiting pressing plate 10 comprises an active material returning pressing plate 28 which is positioned below and is limited on the outer wall of the push-pull cylinder 1 in a rotating way, and a locking nut which is positioned above and is screwed in the outer wall of the push-pull cylinder 1.

The telescopic end of the hydraulic lifting cylinder 49 of the pressing mechanism extends vertically downwards and is fixed on the fixed end of the push-pull hydraulic lifting cylinder 11; the top of the fixed top block 12 is fixedly connected with the fixed end of the push-pull hydraulic lifting cylinder 11; the middle part of the fixed top block 12 is provided with a fixed top block vertical channel, and the telescopic end of the push-pull hydraulic lifting cylinder 11 and the push-pull box 6 are arranged in the fixed top block channel.

When the utility model is used, the workpiece 42 (bearing sleeve) is directly conveyed to the supporting piece 48 on the feeding mechanism 41 of the utility model after the last production line is finished, at the moment, the temperature of the bearing sleeve is very high, and the utility model needs to be subsequently quenched, so that the contact area between the top of the supporting piece 48 and the workpiece 42 can be set smaller, the heat transfer between the supporting piece and the supporting piece can be reduced, and the shrinkage deformation of the bearing sleeve and the damage of the supporting piece 48 caused by the premature loss of heat of the bearing sleeve can be avoided. The workpiece 42 will then be lifted by means of the numerically controlled lifting appliance 43.

The numerical control lifting tool 43 and the pressing mechanism 44 are respectively lifted below the two automated pulleys 30 by two lifting mechanisms. The automatic pulley 30 is erected on the pulley guide rail 33, one side of the automatic pulley 30 is fixedly provided with a pulley motor 31, a main shaft of the pulley motor 31 is fixed on a gear, and the gear is meshed with the rack 32, so that the automatic pulley 30 can be driven to move through the rotation of the main shaft of the pulley motor 31. The sled motor 31 is connected to a numerical control system so that automated control may be performed. The movement form in which the gear and the rack 32 are engaged is provided because the precision of the work 42 and the pressing position is high during processing, and the precision and stability of the movement can be increased by adjusting the fineness of the gear and the rack 32. The lifting mechanism is arranged to enable the digital control lifting appliance 43 and the pressing mechanism 44 to be lifted and lowered under the condition of being horizontally moved. The lifting mechanism may be in the form of a hydraulic lift. It will be seen that the numerically controlled spreader 43 and the hold-down mechanism 44 are free to move on a two-dimensional vertical plane which coincides with the movable two-dimensional vertical plane and passes through the centre of the die on the lifting and rotating platform 51 so that they can transport the workpiece 42 to the die position and hold the die down.

When the feeding mechanism 41 feeds the workpiece 42 to the movable range of the numerical control hoist 43, the workpiece 42 can be hoisted by the numerical control hoist 43. Four suspenders 36 are arranged on the numerical control suspender 43, adjusting rods 38 capable of adjusting the extension length are arranged at the bottom ends of the four suspenders 36, when the workpiece 42 is grabbed, the four suspenders 36 clamp the bottom of the workpiece 42, and the workpiece 42 can be clamped by utilizing the limit of the adjusting rods 38 so as to be hoisted. To accommodate the lifting of workpieces 42 of different sizes, the position and angle of the boom 36 must be adjustable. The numerical control lifting appliance 43 solves the problem. Firstly, the numerical control lifting appliance 43 is provided with four lifting appliance sliding blocks distributed at equal angles on a horizontal plane, and the four lifting appliance sliding blocks can be respectively erected on four motor linear guide rails and can be adjusted in position through lifting appliance motors 39; the bottoms of the four lifting appliance sliding blocks are respectively connected with four moving blocks 35, and the moving blocks 35 are hinged with a lifting rod 36, so that the position of the top end of the lifting rod 36 can be controlled by adjusting a lifting appliance motor 39. In addition, an electric push rod 37 is hinged on the moving block 35, and the electric push rod 37 can push the hanging rod 36 to rotate around the hinged position of the top end, so that the position of the bottom end of the hanging rod 36 is adjusted. Therefore, the numerical control lifting tool 43 can adjust the size according to the size of the workpiece 42, so as to lift the workpiece 42 with the corresponding size and enable the workpiece 42 to move in the vertical and horizontal planes.

After the workpiece 42 is lifted by the numerical control lifting tool 43, the workpiece is horizontally moved to above the pressing die on the lifting rotary platform 51 and is lowered to the periphery of the pressing die to be fixed, and then the numerical control lifting tool 43 is lifted and moved to the outer side, so that a position is left for the region above the pressing die to be lowered by the pressing mechanism 44.

The hold-down mechanism 44 is required because of the following: the die is set as external mold 20 and internal mold 21, external mold 20 is made up of slide block, internal mold 21 is made up of taper piece, the slope contact is adopted between slide block and taper piece, work piece 42 is set up in the periphery of slide block, if we compress tightly slide block and taper piece from upper and lower survey, because of the slope contact form, taper piece can make slide block move outward as far as possible, thus make slide block tighten in work piece 42 survey, under this condition of tightening, put the die intercommunication work piece 42 into the quenching bath through lift rotary platform 51 and rotate and quench and fully cool, work piece 42 shrink at this moment, and because there is the compaction force after the letting down, thus the slide block is tightened in work piece 42 all the time, thus can guarantee work piece 42 is not deformed. Then, how to perform the pressing, we have to provide the upper top plate 17 and the lower bottom plate 52 on the upper and lower sides of the pressing die, and apply the pressing force by pressing between the two plates. The compaction can be realized by screw compaction (published in the prior art) and hydraulic compaction, and in both forms, a worm or a hydraulic system above needs to be driven into a quenching tank, and a device entering quenching is always connected with a device associated with an upper compaction device more or less, so that the device is inconvenient.

The utility model adopts the compression form of the pressure spring 25, and separates the pressure spring 25 from the upper connecting device through ingenious design, so that the device in the quenching tank is very concise (which will be described later).

The present utility model may be provided with different forms of hold-down mechanism 44 depending on the design of the die. If the press mold is provided with only one set of lower molds, in principle the bottom end of the pressing mechanism 44 need only be connected to the upper top plate 17, and not to the upper molds. If we want to arrange the pressing mold in the form of mirror-symmetrical upper and lower molds, it is possible to separate the upper mold and place it on the pressing mechanism 44 to follow the pressing mechanism 44 to move up and down and slide, and integrate the material returning system of the upper mold to the pressing mechanism 44. When the lower die is in the form of a single lower die, the workpiece 42 with a shorter barrel length can be aimed at, the top end of the workpiece 42 is positioned below the top end of the lower die, and the workpiece 42 is not blocked by the workpiece 17 to be directly pressed to the lower die when the upper top plate 17 falls. When the upper die and the lower die are adopted, the top of the workpiece 42 can be higher than the top of the lower die, and the workpiece 42 can be embedded when the subsequent upper die falls down, and the upper top plate 17 is pressed above the upper die so as to simultaneously press the upper die and the lower die.

The compressing mechanism 44 of the present utility model is mainly divided into two parts, one is a push-pull expansion mechanism 50, the other is a compression spring mechanism 55, wherein the compression spring mechanism 55 can be further divided into an upper part and a lower part, and the upper part and the lower part are detachably connected through the hanging ring 15 and the hanging lug 16. Initially, the entire assembly is fully suspended from the automated sled 30 and, after the work piece 42 is installed in place and the numerically controlled spreader 43 is removed, the hold down mechanism 44 is moved directly over the center of the work piece 42.

Firstly, explaining is carried out for the condition of only the lower die. When the pressing mechanism 44 is naturally hung above the workpiece 42, under the action of the gravity of the push-pull expansion mechanism 50, the limit pressing plate 10 at the upper part of the push-pull expansion mechanism 50 is pressed above the pressure spring 25, and the pressure spring 25 is pressed to have upward and downward pressure; the supporting ball 4 is supported just below the push-pull ball 3. At this time, the hydraulic lifting cylinder 49 of the pressing mechanism is stretched downward to lower the whole pressing mechanism 44 until the upper top plate 17 touches the lower die, the hydraulic lifting cylinder 49 of the pressing mechanism continues to be stretched downward, the upper top plate 17 is limited, but the push-pull expanding mechanism 50 can still move downward for a certain distance due to the action of gravity, at this time, the push-pull expanding mechanism 50 is pressed on the pressure spring 25 more, then the push-pull hydraulic lifting cylinder 11 moves upward, the supporting ball 4 is pressed under the push-pull ball 3 due to the thrust of the push-pull box spring 5, so that the supporting ball 4 can drive the push-pull ball 3 to move upward to drive the push-pull cone 7 to move upward, the push-pull cone 7 drives the push-pull block 8 to stretch out and be embedded in the groove position arranged on the lifting rotating platform 51, at this time, the whole push-pull cylinder 1 is fixed to the lifting rotating platform 51 (due to the action of the pull of the push-pull block spring 9, so that a huge friction force exists between the push-pull cone 7 and the push-pull block 8, and the push-pull cone 7 will not naturally fall), and the pressed pressure spring 25 exists between the limited pressure plate 10 fixed on the upper part of the push-pull cone 1 and the upper top plate 17, so that the whole top plate 17 is naturally pressed by the pressure spring 25. Next, the automatic locking mechanism 40 is released to release the lifting ring 15 and the lifting lug 16, at this time, the hydraulic lifting cylinder 49 of the pressing mechanism pulls the pressing mechanism 44 upward, the lifting ring 15 can be separated from the lifting lug 16, and since the push-pull column 1 is fixed, the supporting ball 4 is subjected to a huge force of the push-pull ball 3 to push the push-pull box spring 5 so that the supporting ball 4 moves inward to above the push-pull ball 3 and is separated from the push-pull ball 3, so that the push-pull box 6, the upper part of the pressure spring mechanism 55, the hydraulic cylinder for lowering the pressing mechanism 44 and other mechanisms (which will be referred to as upper mechanisms hereinafter) are separated, and they do not enter the quenching bath any more, so that the devices in the quenching bath become more compact.

After quenching is completed, the lifting rotary platform 51 moves upwards to restore the original state, the upper mechanism is lowered again, at the moment, the supporting ball 4 on the push-pull box 6 can automatically push the push-pull ball 3, then push the push-pull rod 2 to move downwards, then push the push-pull cone 7 to move downwards, and the push-pull block 8 moves inwards under the action of the push-pull block spring 9, so that the push-pull column 1 is not fixed any more. Simultaneously, the lifting ring 15 is connected with the lifting lug 16, the automatic locking mechanism 40 locks the lifting lug and the lifting lug, at the moment, the hydraulic lifting cylinder 49 of the pressing mechanism moves upwards to drive the whole pressing mechanism 44 to move upwards, so that the pressing mechanism 44 can be separated from the pressing die and the workpiece 42, and then the pressing mechanism 44 moves out of the area above the pressing die. In this case, the inner and outer dies of the lower die are still in a compressed state due to the contraction force of the workpiece 42, and in order to release the compression, that is, in order to return the material, the ejector motion of the ejector rod disclosed in the prior art may be used to perform the material returning, specifically, the ejector rod may be ejected by the power device below the lower die, the ejector rod may eject the inner die located below, and the inner and outer dies relatively move to release the compressed state. Next, the numerically controlled lifting tool 43 moves again to the area above the pressing die to clamp the workpiece 42, moves to the support 48 of the original feeding mechanism 41, and returns to the original position through the feeding mechanism 41 or is taken away by the clamping jaw of the next production line to process the next production line.

The above description is directed to the case where the pressing mechanism 44 is not provided with the upper die, and if the upper die and the corresponding upper die material returning system are provided, the device is different, but the above process is substantially the same in the use process, and the difference is that:

1. the upper die is arranged below the upper top plate 17, and when the pressing mechanism 44 is lowered, the upper die is firstly embedded into the workpiece 42, and the upper top plate 17 is pressed above the upper die so as to simultaneously press the upper die and the lower die.

2. After quenching is completed, the upper die is required to be returned, and the material returning process is as follows: after quenching is completed, the lifting rotary platform 51 moves upwards to restore the original state, the upper mechanism is lowered again, at the moment, the supporting ball 4 on the push-pull box 6 can automatically push the push-pull ball 3, then the push-pull rod 2 is pushed to push the push-pull cone 7 to move downwards, and the push-pull block 8 moves inwards under the action of the push-pull block spring 9, so that the push-pull cylinder 1 is not fixed any more. Meanwhile, the lifting ring 15 is connected with the lifting lug 16, the lifting lug 16 is locked by the automatic locking device (these are not changed), at the moment, the hydraulic lifting cylinder 49 of the pressing mechanism suddenly moves upwards, and the push-pull cylinder 1 is not fixedly connected with the upper top plate 17, so that the distance between the upper top plate 17 and the limiting pressing plate 10 suddenly decreases under the action of pulling force, the limiting pressing plate 10 can touch the driving material returning rod 24 and downwards push the driving material returning rod 24 to push the driven material returning plate, the driven material returning rod 23 pushes the driven material returning rod 23, and the driven material returning rod 23 pushes the inner die 21 of the upper die to realize the relative movement of the inner die 20 and the outer die so as to release the fixation of the inner die and the outer die, thereby achieving the material returning action of releasing the fixation of the workpiece 42. Then, the pressing mechanism 44 is lifted up, and the whole pressing mechanism 44 is separated from the workpiece 42.

All motors, hydraulic cylinders and the like can be connected to a numerical control system for automatic control.

It can be seen that the present utility model has the advantages of automation, simple workflow, simplified apparatus during quenching, capability of grabbing workpieces 42 of various sizes, etc.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should be covered by the protection scope of the present utility model by making equivalents and modifications to the technical solution and the inventive concept thereof.

Claims (6)

1. The numerical control lifting appliance is characterized by comprising a plurality of sliding mechanisms which are arranged on a horizontal lifting frame (34) and can move linearly, wherein sliding lines of the sliding mechanisms are distributed in an equiangular radial manner; each sliding mechanism is hinged with a boom (36) positioned below the sliding mechanism; the sliding mechanism is also hinged with the top end of a telescopic mechanism, and the bottom end of the telescopic mechanism is hinged with the side wall of the suspender (36); an adjusting rod (38) for supporting a workpiece is arranged at the bottom of the suspender (36); the sliding mechanism is also connected with a power mechanism capable of driving the sliding mechanism to move;

the sliding machine framework is arranged on the motor linear guide rail which is arranged on the hanging bracket (34) and is distributed in an equiangular radial manner;

the power mechanism is a lifting appliance motor (39), and the lifting appliance motor (39) is fixed at the outer end of the linear guide rail of the motor;

the included angle of sliding lines of two adjacent sliding mechanisms is 90 degrees;

the sliding mechanism comprises a lifting appliance sliding block and a moving block, wherein the lifting appliance sliding block is arranged on the motor linear guide rail, the moving block is fixed below the lifting appliance sliding block, and the top end of the lifting rod (36) and the top end of the telescopic mechanism are both hinged to the moving block.

2. The numerical control lifting appliance according to claim 1, characterized in that the telescopic mechanism is an electric push rod (37).

3. The numerically controlled sling according to claim 1 or 2, wherein the bottom end of the telescopic mechanism is a telescopic end.

4. The digitally controlled spreader of claim 1, wherein the telescoping mechanism is hinged to a central sidewall of the adjacent boom (36).

5. The digitally controlled spreader of claim 1, wherein the adjustment bar (38) is arranged perpendicular to the direction of extension of the boom (36).

6. The numerical control lifting appliance according to claim 5, characterized in that a chute perpendicular to the extending direction of the lifting rod (36) is provided at the bottom end of the lifting rod (36), and the adjusting rod (38) is slidably inserted into the chute and is adjustable in fixing position by means of a fastener.