Automatic clamping and releasing device for crucible of precision casting furnace

Abstract

The utility model relates to an automatic crucible clamping and releasing device of a precision casting furnace, which is characterized in that the automatic crucible clamping and releasing device is placed in a smelting chamber, a lifting frame is connected with a hook, and the hook drives a guide sleeve to move upwards until the guide sleeve collides with a wedge disc and the hook is separated from the guide sleeve and moves upwards along the side of the wedge disc; the lifting frame drives the connecting rod and the supporting rod to move upwards together, the connecting rod and the supporting rod contract in the direction of the hanging core shaft until the supporting rod touches the cross beam and stops moving, and the sliding block supports the inner wall of the crucible; clamping and releasing of the crucible are achieved; the crucible can be taken and placed under the vacuum condition, meanwhile, unpowered automatic clamping and releasing of the crucible are achieved through the dead weight of the pendant lump, other power sources are not needed, the crucible is environmentally friendly, the stability can be kept, the requirement for the height of a factory building by precision casting furnace equipment can be greatly lowered, and the height limiting problem of the factory building is solved; the device is compact and reliable in structure, convenient to use and easy to operate.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to a kind of automatic clamping release device of crucible and the crucible clamping and release mode of vacuum precision casting furnace, especially to a kind of automatic clamping release device of precision casting furnace crucible, specifically to the automatic clamping and release crucible device of precision casting furnace special purpose. BACKGROUND

[0002] In prior art, when casting different specifications of blade materials, in order to further improve production efficiency, the clamping and release of smelting crucible need to be completed under vacuum condition, and in order to cooperate with the requirements of different specifications of blade, crucible of different specifications and sizes need to be replaced.

[0003] Meanwhile, the design and use of feeding mechanism of vacuum precision casting furnace have the following effects and influences on the whole production process: first, feeding mechanism is an important part of equipment, and is an indispensable link in production process; second, the operation of feeding mechanism has important influence on production process rhythm of equipment, the time occupied by different actions and sequence during feeding is different, and process rhythm needs to be adjusted accordingly; third, the sealing property of feeding mechanism has certain influence on vacuum degree of equipment, and the operation of feeding action has different requirements for sealing of equipment. In existing condition, vacuum precision casting furnace uses vertical feeding mode for feeding, adopts pneumatic clamping mode, and the stroke of whole operation mechanism is high. When vertical feeding, the height requirement of mechanism for workshop is higher. When planning new equipment for early construction workshop, the height of workshop must be considered. CONTENT OF THE UTILITY MODEL

[0004] The embodiment of the utility model aims to provide a new crucible clamping and release mode when the height of workshop is limited, without providing power source, greatly reducing the height of vertical feeding mechanism to complete the clamping and release of crucible; provide a kind of automatic clamping and release crucible device special for precision casting furnace, a set of device can realize taking and placing crucible under vacuum condition, can also adapt to crucible of different sizes, without providing power source, green and environmental protection, solve the problem of height limitation of workshop, improve the purity of engine blade product, and improve production efficiency.

[0005] In order to achieve the above purpose, the embodiment of the utility model designs a kind of automatic clamping release device of precision casting furnace crucible, comprising:

[0006] Crucible; the automatic clamping release device of crucible is placed in the crucible;

[0007] Lifting frame, the lifting frame is arranged along the preset axis of the automatic clamping release device of crucible;

[0008] Connecting rod, a plurality of connecting rods are connected on the lifting frame through pin shaft;

[0009] hanging core shaft, the hanging core shaft is screwed below the lifting frame

[0010] bracket, the bracket is screwed below the lower section of the hanging core shaft, and upper and lower end faces of the bracket and the hanging core shaft are fixed by nuts respectively;

[0011] hooks, a plurality of groups of hooks are connected to the lower end of the lifting frame by pins;

[0012] wedge plates, guide sleeves and locking nuts are arranged on the hanging core shaft respectively;

[0013] bracket arms, a plurality of groups of the bracket arms are arranged around the hanging core shaft, and bottom end faces of the bracket arms are welded to the bracket;

[0014] upper ends of the bracket arms are provided with positioning blocks and cross beams;

[0015] support rods, the support rods are L-shaped structures, long arms and short arms of the L-shaped structures of the support rods are connected to lower ends of the bracket arms by pins, and the long arms of the support rods penetrate the bracket arms and are connected to the connecting rods by pins;

[0016] suspension blocks, the suspension blocks are fixed below the hanging core shaft;

[0017] an upper end face of the crucible is in contact with the bracket arm, the suspension blocks are located inside the crucible, and the contact and separation between the support rods and the crucible are realized;

[0018] first, the positioning blocks are opened; the automatic crucible clamping and releasing device is placed into a smelting chamber, the lifting frame is connected with the hooks, the hooks drive the guide sleeves to move upwards until the guide sleeves collide with the wedge plates, the hooks are separated from the guide sleeves and move upwards along the edge sides of the wedge plates, meanwhile, the lifting frame drives the connecting rods and the support rods to move upwards, the connecting rods and the support rods are retracted towards the hanging core shaft until the support rods touch the cross beams and stop moving, and the sliding blocks support the inner walls of the crucibles;

[0019] first, the positioning blocks are closed, the positioning blocks fall into the bracket arms, after the charging mechanism lifts the crucible and places it into the smelting chamber, the suspension blocks rely on the self-weight to make the lifting frame fall and drive the connecting rods and the support rods to move downwards, the connecting rods and the support rods are in an open state, meanwhile, the lifting frame drives the hooks to move downwards along the edge sides of the wedge plates, the hooks are separated from the wedge plates, continue to move downwards to drive the guide sleeves to move downwards along the hanging core shaft until the lower end faces of the guide sleeves collide with the locking nuts, the connecting rods and the support rods stop moving, the sliding blocks retract downwards and are separated from the inner walls of the crucibles, and the clamping and releasing of the crucibles are realized.

[0020] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, a guide sleeve is arranged below the wedge disc at a distance, the guide sleeve is combined by a trapezoid on the top and a trapezoid on the bottom, and the lower end of the guide sleeve is fixed to the core shaft by a locking nut.

[0021] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the lifting frame is connected with the connecting rods by the pin shafts respectively, and the connecting rods are arranged at an angle of 120°.

[0022] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the lifting frame is connected with the connecting rods by the pin shafts respectively, and the connecting rods are arranged at an angle of 120°.

[0023] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the core shaft is concentrically arranged from top to bottom with the wedge disc, the guide sleeve and the locking nut.

[0024] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the wedge disc is a circular truncated cone with a thread structure inside, and the up-and-down movement on the core shaft can be realized by rotating the wedge disc, the guide sleeve is combined by a trapezoid on the top and a trapezoid on the bottom, and the lower end of the guide sleeve is fixed to the core shaft by the locking nut.

[0025] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the bracket arm is a Z-shaped double-layer structure, the positioning block is arranged on the outer side corner of the upper end of the bracket arm by the pin shaft, the cross beam is arranged on the inner side corner of the upper end of the bracket arm, and the long arm of the supporting rod runs between the positioning block and the cross beam of the bracket arm.

[0026] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the short arm of the supporting rod is provided with a sliding block, and the sliding block is in the shape of a rack.

[0027] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the weight of the pendant is 5-10 times that of the automatic clamping and releasing device for the precise casting furnace crucible, and the automatic clamping and releasing device for the precise casting furnace crucible realizes the automatic clamping and releasing of the crucible by the weight of the pendant.

[0028] Further, in the automatic clamping and releasing device for the precise casting furnace crucible, the core shaft is a full-thread structure.

[0029] Compared with the prior art, the embodiment of the utility model discloses the automatic clamping and releasing device of crucible is placed in the crucible, the bracket is arranged along the preset axis of the automatic clamping and releasing device of crucible, a plurality of connecting rods are connected on the bracket through the pin shaft, the short arm hanging core shaft is screw connected below the bracket, the bracket is connected with the upper and lower end faces of the hanging core shaft respectively through the nut, a plurality of groups of hooks are connected through the pin shaft at the lower end of the bracket, the wedge disc, the guide sleeve and the locking nut are arranged on the hanging core shaft respectively, a plurality of groups of bracket arms are arranged with the hanging core shaft as the center, the bracket arm bottom end face is welded to the bracket, the upper end of the bracket arm is provided with the locating block and the crossbeam, the strut is L type structure, the long arm and the short arm intersection of the L type structure of the strut are connected with the bracket arm lower end through the pin shaft, the strut long arm penetrates the bracket arm and is connected with the connecting rod through the pin shaft, the pendant is fixed below the hanging core shaft, the upper end face of the crucible is contacted with the bracket arm, the pendant is located in the crucible, and the contact and separation of the strut and the crucible are realized through the contact and separation of the strut and the crucibble.

[0030] First, the locating block is opened, the automatic clamping and releasing device of crucible is placed in the smelting chamber, the bracket is connected with the hook, the hook drives the guide sleeve to move upwards until the guide sleeve collides with the wedge disc, the hook separates from the guide sleeve and moves upwards along the side of the wedge disc, at the same time, the bracket drives the connecting rod and the strut to move upwards, the connecting rod and the strut shrink to the direction of the hanging core shaft until the strut touches the crossbeam and stops moving, and the sliding block props up the inner wall of the crucible.

[0031] First, the locating block is closed, the locating block falls into the bracket arm, after the charging mechanism lifts the crucible and places it into the smelting chamber, the pendant relies on the weight, the bracket drives the connecting rod and the strut to move downwards, the connecting rod and the strut are in the open state, at the same time, the bracket is connected with the hook and moves downwards along the side of the wedge disc, the hook leaves the wedge disc, continues to drive the guide sleeve to move downwards along the hanging core shaft until the lower end face of the guide sleeve collides with the locking nut, the connecting rod and the strut stop moving, the sliding block shrinks downwards and separates from the inner wall of the crucible, and the clamping and releasing of the crucible are realized.

[0032] The utility model discloses can be realized in vacuum condition fetch, put crucible, and through the pendant pahar self -weight to realize the unpowered automatic clamping and release crucible of the stability of the special automatic clamping and release crucible device of precision casting furnace without other power source, green environmental protection can still keep, the special automatic clamping and release crucible device of precision casting furnace can greatly reduce the height requirement of plant of precision casting furnace equipment to the plant height limit problem of solving, in order to prevent the excessive rise of support pole, the bracket support arm upper end inside corner all designs the crossbeam, can guarantee the normal operation of the special automatic clamping and release crucible device of precision casting furnace, and in order to more stable clamping crucible, the bracket support arm lower end is provided with the sliding block, and the sliding block is designed as the rack shape, increases the friction between the special automatic clamping and release crucible device of precision casting furnace and the crucible, and the clamping of the crucible is convenient. In order to adapt to different specifications size crucible, the core shaft is full thread structure, and the wedge disc is circular truncated cone shape internal thread structure, can through the adjustment core shaft from top to bottom wedge disc, guide sleeve and lock nut distance, ensure that the special automatic clamping and release crucible device accurately and stably clamps the new specification crucible, the utility model discloses compact and reliable structure, convenient to use, easy to operate. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is the main view of the utility model clamping crucible, and the positioning block opens;

[0034] Figure 2 It is the A-A section view of Figure 1 .

[0035] Figure 3 It is the plan view of the utility model;

[0036] Figure 4 It is the main view of the utility model releasing crucible, and the positioning block closes;

[0037] Figure 5 It is the B-B section view of Figure 4 .

[0038] In the drawings, 1 is the bracket, 11 is the hook, 2 is the connecting rod, 3 is the core shaft, 31 is the wedge disc, 32 is the guide sleeve, 33 is the lock nut, 4 is the bracket, 5 is the bracket support arm, 51 is the positioning block, 52 is the crossbeam, 6 is the support pole, 61 is the sliding block, 7 is the pendant pahar, 8 is the crucible. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the drawings. However, those skilled in the art can understand that, in the various embodiments of the utility model, many technical details are proposed in order to enable the reader to better understand the present application. However, even if there are no such technical details and various changes and modifications based on the following embodiments, the technical scheme claimed by the various claims of the present application can still be implemented.

[0040] The embodiments of the utility model relate to a kind of precision casting furnace crucible automatic clamping release device, as shown in Figures 1-5 It includes:

[0041] Crucible automatic clamping release device is placed in crucible 8;Along the preset axis of crucible automatic clamping release device, bracket 1 is arranged;Several connecting rods 2 are connected on bracket 1 by pin shaft;Short-arm hanging core shaft 3 is threadedly connected below bracket 1;Tray 4 is threadedly connected below hanging core shaft 3, and the upper and lower end faces of tray 4 and hanging core shaft 3 are fixed by nut respectively;Several groups of hooks 11 are connected by pin shaft at the lower end of bracket 1;Hanging core shaft 3 is respectively provided with wedge disc 31, guide sleeve 32 and locking nut 33;Several groups of tray support arms 5 are arranged with hanging core shaft 3 as center, and the bottom end face of tray support arm 5 is welded to tray 4;The upper end of tray support arm 5 is provided with positioning block 51 and crossbeam 52;Supporting rod 6 is L-shaped structure, and the intersection of long arm and short arm of L-shaped structure of supporting rod 6 is connected with the lower end of tray support arm 5 by pin shaft, and the long arm of supporting rod 6 penetrates through tray support arm 5 and is connected with connecting rod 2 by pin shaft;Hanging pendant 7 is fixed below hanging core shaft 3;The upper end face of crucible 8 is in contact with tray support arm 5, and hanging pendant 7 is located in the inside of crucible 8, and the contact and separation of crucible 8 are realized by supporting rod 6;The upper end face of crucible 8 is in contact with tray support arm 5, and hanging pendant 7 is located in the inside of crucible 8, and the contact and separation of crucible are realized by supporting rod 6, to realize the clamping and release of crucible.

[0042] First, positioning block 51 is opened;Crucible automatic clamping release device is put into smelting chamber, bracket 1 is connected with hook 11, hook 11 drives guide sleeve 32 to move upwards, until guide sleeve 32 collides with wedge disc 31, hook 11 separates from guide sleeve 32 and moves upwards along the side of wedge disc 31, at the same time, bracket 1 drives connecting rod 2 and supporting rod 6 to move upwards, connecting rod 2 and supporting rod 6 shrink towards hanging core shaft 3, until supporting rod 6 touches crossbeam 52 and stops moving, and sliding block 61 supports the inner wall of crucible 8;

[0043] The positioning block 51 is first closed, and the positioning block 51 falls into the bracket support arm 5. After the charging mechanism lifts the crucible 8 into the smelting chamber, the weight of the hanging block 7 relies on the self weight, the lifting frame 1 falls to drive the connecting rod 2 and the support rod 6 to move downward, the connecting rod 2 and the support rod 6 are in an open state, at the same time, the lifting frame 1 drives the hook 11 to move downward along the side of the wedge disc 31, the hook 11 is away from the wedge disc 31, and continues to drive the guide sleeve 32 to move downward along the hanging core shaft 3 until the lower end surface of the guide sleeve 32 collides with the locking nut 33, the connecting rod 2 and the support rod 6 stop moving, the sliding block 61 shrinks downward and is separated from the inner wall of the crucible 8, and the crucible is clamped and released.

[0044] The crucible automatic clamping and releasing device in the embodiment can take and place the crucible under the vacuum condition, and automatically clamps and releases the crucible through the weight of the hanging block, without other power sources, so that the device is green and environmentally friendly, the stability of the automatic clamping and releasing device for the precision casting furnace can be maintained, the charging mechanism does not need a high-stroke cylinder clamping mechanism, the height requirement of the precision casting furnace equipment for the factory building can be greatly reduced, and the height limitation of the factory building is solved; in order to prevent the support rod from rising excessively and failing to return, the inner side edges of the upper ends of the bracket support arms are all designed to have cross beams, so that the automatic clamping and releasing device for the precision casting furnace can normally operate, and in order to more stably clamp the crucible, the sliding blocks are arranged at the bottom ends of the short arms of the support rods, the sliding blocks are designed to be in the shape of a rack, the friction between the automatic clamping and releasing device for the precision casting furnace and the crucible is increased, and the clamping of the crucible is facilitated. In order to adapt to crucibles of different specifications and sizes, the hanging core shaft is in a full-thread structure, and the wedge disc is in a circular truncated cone shape and an internal thread structure, the distance between the wedge disc, the guide sleeve and the locking nut from top to bottom can be adjusted, the automatic clamping and releasing device for the precision casting furnace can accurately and stably clamp the crucibles of new specifications, the device is compact and reliable in structure, convenient to use and simple to operate.

[0045] In order to achieve the above technical effects, in the automatic clamping and releasing device for the crucible of the precision casting furnace in the embodiment, the guide sleeve 32 is arranged below the wedge disc 31 at a distance, the guide sleeve 32 is combined by an upper trapezoidal surface and a lower trapezoidal surface, and the lower end of the guide sleeve 32 is fixed to the hanging core shaft 3 through the locking nut 33.

[0046] In order to achieve the above technical effects, in the automatic clamping and releasing device for the crucible of the precision casting furnace in the embodiment, three groups of connecting rods 2 are connected to the lifting frame 1 through pin shafts respectively and are arranged at an angle of 120°.

[0047] In order to achieve the above technical effects, in the automatic clamping and releasing device for the precision casting furnace crucible, the lower end of the lifting frame 1 is connected with three groups of hooks 11 with an included angle of 120° through a pin shaft, the hooks 11 are located in the middle of the two groups of connecting rods 2 in the vertical direction of the lifting frame 1, the hooks 11 are inverted L-shaped structures, the center of gravity of the three groups of hooks 11 is always inside the lifting core shaft 3, and the hooks 11 are in a retracted state when naturally placed.

[0048] In order to achieve the above technical effects, in the automatic clamping and releasing device for the precision casting furnace crucible, the lifting core shaft 3 is provided with a wedge disc 31, a guide sleeve 32 and a locking nut 33 from top to bottom in a concentric manner.

[0049] In order to achieve the above technical effects, in the automatic clamping and releasing device for the precision casting furnace crucible, the wedge disc 31 is a circular truncated cone-shaped internal thread structure, and the up-and-down movement of the lifting core shaft 3 can be realized by rotating the wedge disc 31. The guide sleeve 32 is combined with the upper trapezoid and the lower trapezoid, and the lower end of the guide sleeve 32 is fixed on the lifting core shaft 3 through the locking nut 33. The guide sleeve 32 is combined with the upper trapezoid and the lower trapezoid, which guides the hooks 11. The lower end of the guide sleeve 32 is fixed on the lifting core shaft 3 through the locking nut 33. Among them, the wedge disc 31 and the locking nut 33 can be adjusted to the required position on the lifting core shaft 3, which can adapt to crucibles 8 of different sizes.

[0050] In order to achieve the above technical effects, in the automatic clamping and releasing device for the precision casting furnace crucible, the bracket support arm 5 is a Z-shaped double-layer structure, the positioning block 51 is arranged on the outer side corner of the upper end of the bracket support arm 5 through a pin shaft, the cross beam 52 is arranged on the inner side corner of the upper end of the bracket support arm 5, and the long arm of the supporting rod 6 runs between the positioning block 51 and the cross beam 52 of the bracket support arm 5. In order to prevent the supporting rod 6 from rising excessively and failing to return, the inner side corner of the upper end of the bracket support arm 5 is provided with the cross beam 52, which can ensure that the automatic clamping and releasing device for the precision casting furnace crucible can normally operate, and the long arm of the supporting rod 6 runs between the positioning block 51 and the cross beam 52 of the bracket support arm 5.

[0051] In order to achieve the above technical effects, in the automatic clamping and releasing device for the precision casting furnace crucible, the short arm of the supporting rod 6 is provided with a sliding block 61, and the sliding block 61 is in the shape of a rack.

[0052] In order to achieve the above technical effects, in the automatic clamping and releasing device for the precision casting furnace crucible, the weight of the pendant 7 is 5-10 times that of the automatic clamping and releasing device for the precision casting furnace crucible, and the automatic clamping and releasing device for the precision casting furnace crucible realizes the automatic clamping and releasing of the crucible through the self-weight of the pendant 7.

[0053] In order to realize the above technical effects, the automatic clamping and releasing device for the crucible of the precision casting furnace in the embodiment is provided with a full-thread structure of the core shaft 3.

[0054] The weight of the pendant block 7 is 5-10 times that of the automatic clamping and releasing device for the crucible of the precision casting furnace, and the automatic clamping and releasing device for the crucible of the precision casting furnace realizes automatic clamping and releasing of the crucible by the self weight of the pendant block 7, thereby maintaining the stability of the automatic clamping and releasing device for the crucible of the precision casting furnace.

[0055] After a certain number of smelting of the precision casting furnace, in order to ensure the quality of the cast blade, the crucible 8 for containing the high-temperature alloy liquid in the smelting chamber needs to be replaced in time, and the automatic clamping and releasing device for the crucible can be used to realize this. ① Clamping and taking out the old crucible in the smelting chamber: on the platform of the precision casting furnace, first open the positioning block 51 in the automatic clamping and releasing device for the crucible (at this time, the positioning block 51 is lifted and in a vertical state), the feeding mechanism lifts the automatic clamping and releasing device for the crucible into the smelting chamber, the bracket 1 is connected with the hook 11, the hook 11 drives the guide sleeve 32 to move upwards, until the guide sleeve 32 collides with the wedge disc 31, the hook 11 is separated from the guide sleeve 32 and moves upwards along the side of the wedge disc 31, at the same time, the bracket 1 drives the connecting rod 2 and the support rod 6 to move upwards, the connecting rod 2 and the support rod 6 are retracted towards the core shaft 3, until the support rod 6 touches the cross beam 52 to stop moving, the sliding block 61 supports the inner wall of the crucible 8, the crucible 8 is clamped and moved out of the smelting chamber and placed on the platform, relying on the self weight of the pendant block 7, the bracket 1 falls and drives the connecting rod 2 and the support rod 6 to move downwards, the connecting rod 2 and the support rod 6 are in an open state, until the support rod 6 touches the positioning block 51 to stop moving, the crucible 8 is separated from the automatic clamping and releasing device for the crucible, and the old crucible 8 is taken out; ② Installing a new crucible and placing it in the smelting chamber: on the platform of the precision casting furnace, first close the positioning block 51 in the automatic clamping and releasing device for the crucible (at this time, the positioning block 51 falls into the bracket arm 5), after the feeding mechanism lifts the crucible 8 and places it in the smelting chamber, relying on the self weight of the pendant block 7, the bracket 1 falls and drives the connecting rod 2 and the support rod 6 to move downwards, the connecting rod 2 and the support rod 6 are in an open state, at the same time, the bracket 1 connected with the hook 11 moves downwards along the side of the wedge disc 31, the hook 11 is separated from the wedge disc 31, and continues to drive the guide sleeve 32 to move downwards along the core shaft 3, until the lower end surface of the guide sleeve 32 collides with the locking nut 33, the connecting rod 2 and the support rod 6 stop moving, the sliding block 61 retracts downwards and separates from the inner wall of the crucible 8, the crucible 8 is released and left in the smelting chamber, then the feeding mechanism lifts the bracket 1, the bracket 1 moves upwards and drives the connecting rod 2 and the support rod 6 to move upwards, the connecting rod 2 and the support rod 6 are in a retracted state, at the same time, the bracket 1 connected with the hook 11 moves upwards along the core shaft 3, the hook 11 retracts inwards until it contacts the lower end surface of the wedge disc 31, the connecting rod 2 and the support rod 6 stop moving, the feeding mechanism drives the automatic clamping and releasing device for the crucible to move away from the smelting chamber, and the complete clamping of the old crucible and the releasing of the new crucible are completed.

[0056] According to the smelting process requirements, when different specifications and sizes of crucibles need to be replaced, the distance between the wedge disc 31, the guide sleeve 32 and the locking nut 33 of the lifting core shaft 3 from top to bottom can be adjusted to ensure that the special automatic clamping and releasing crucible device accurately and stably clamps the new specification of the crucible 8.

[0057] Those skilled in the art can understand that the above-mentioned embodiments are specific embodiments for implementing the present application, and in actual application, various changes can be made in form and details without departing from the spirit and scope of the present application.

Claims

1. A precision casting furnace crucible automatic gripping and releasing device, characterized by, It comprises: a crucible (8); the crucible automatic clamping release device is placed in the crucible (8); a lifting frame (1), the lifting frame (1) is arranged along the preset axis of the crucible automatic clamping release device; a connecting rod (2), a plurality of connecting rods (2) are connected on the lifting frame (1) through a pin; a core shaft (3), the core shaft (3) is threadedly connected with a short arm below the lifting frame (1); a bracket (4), the bracket (4) is threadedly connected with the lower end of the core shaft (3), and the upper and lower end faces of the bracket (4) and the core shaft (3) are fixed by nuts respectively; a hook (11), a plurality of groups of hooks (11) are connected to the lower end of the lifting frame (1) through a pin; a wedge disc (31), a guide sleeve (32) and a locking nut (33) are arranged on the core shaft (3) respectively; a bracket support arm (5), a plurality of groups of bracket support arms (5) are arranged around the core shaft (3), and the bottom end face of the bracket support arm (5) is welded to the bracket (4); the upper end of the bracket support arm (5) is provided with a positioning block (51) and a cross beam (52); a support rod (6), the support rod (6) is in L-shaped structure, the intersection of the long arm and the short arm of the L-shaped structure of the support rod (6) is connected with the lower end of the bracket support arm (5) through a pin, and the long arm of the support rod (6) penetrates the bracket support arm (5) and is connected with the connecting rod (2) through a pin; a pendant (7), the pendant (7) is fixed below the core shaft (3); the upper end face of the crucible (8) is in contact with the bracket support arm (5), the pendant (7) is located in the crucible (8), and the contact and separation between the support rod (6) and the crucible (8) are realized; first, the positioning block (51) is opened; the crucible automatic clamping release device is placed in the smelting chamber, the lifting frame (1) is connected with the hook (11), the hook (11) drives the guide sleeve (32) to move upwards, until the guide sleeve (32) collides with the wedge disc (31), the hook (11) is separated from the guide sleeve (32) and moves upwards along the side of the wedge disc (31), at the same time, the lifting frame (1) drives the connecting rod (2) and the support rod (6) to move upwards, the connecting rod (2) and the support rod (6) are retracted towards the core shaft (3), until the support rod (6) touches the cross beam (52) and stops moving, and the sliding block (61) supports the inner wall of the crucible (8); First, the positioning block (51) is closed, the positioning block (51) falls into the bracket arm (5), the charging mechanism lifts the row of crucibles (8) into the smelting chamber, relies on the weight of the hanging lump (7), the bracket (1) falls to drive the connecting rod (2) and the brace (6) to move downward, the connecting rod (2) and the brace (6) are in an open state, at the same time, the bracket (1) drives the hook (11) to move downward along the wedge disc (31), the hook (11) leaves the wedge disc (31), continues to drive the guide sleeve (32) to move downward along the hanging core shaft (3), until the lower end of the guide sleeve (32) collides with the locking nut (33), the connecting rod (2) and the brace (6) stop moving, the sliding block (61) shrinks downward and separates from the inner wall of the crucible (8), realizing the clamping and releasing of the crucible.

2. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, A guide sleeve (32) is arranged below the wedge disc (31) at a distance, the guide sleeve (32) is combined with the upper trapezoid and the lower trapezoid, and the lower end of the guide sleeve (32) is fixed on the hanging core shaft (3) through the locking nut (33).

3. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, Three groups of the connecting rod (2) are connected to the bracket (1) through pins at an angle of 120°.

4. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The lower end of the bracket (1) is connected to three groups of hooks (11) at an angle of 120° through pins, the hooks (11) are located between the two groups of connecting rods (2) in the vertical direction of the bracket (1), the hooks (11) are inverted L-shaped structures, and the gravity centers of the three groups of hooks (11) are always inside the hanging core shaft (3), and the hooks (11) are in a retracted state when placed naturally.

5. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The hanging core shaft (3) is concentrically provided with the wedge disc (31), the guide sleeve (32) and the locking nut (33) from top to bottom.

6. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The wedge disc (31) is a circular truncated cone with an internal thread structure, and the upward and downward movement on the hanging core shaft (3) can be realized by rotating the wedge disc (31), the guide sleeve (32) is combined with the upper trapezoid and the lower trapezoid, and the lower end of the guide sleeve (32) is fixed on the hanging core shaft (3) through the locking nut (33).

7. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The bracket arm (5) is a Z-shaped double-layer structure, the positioning block (51) is arranged on the outer side corner of the upper end of the bracket arm (5) through a pin, the cross beam (52) is arranged on the inner side corner of the upper end of the bracket arm (5), and the long arm of the brace (6) runs between the positioning block (51) and the cross beam (52) of the bracket arm (5).

8. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The short arm of the brace (6) is provided with a sliding block (61) at the bottom end, and the sliding block (61) is in the shape of a rack.

9. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The weight of the hanging lump (7) is 5-10 times that of the precision casting furnace crucible automatic clamping and releasing device, and the precision casting furnace crucible automatic clamping and releasing device realizes automatic clamping and releasing of the crucible through the weight of the hanging lump (7).

10. The precision casting furnace crucible automatic gripping and releasing device according to claim 1, characterized in that, The hanging core shaft (3) is a full-thread structure.

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