CN223932543U - Top box stripping device for large casting resin sand molding - Google Patents

Abstract

This utility model relates to the technical field of casting tooling, and in particular to a top box demolding device for resin sand molding of large castings. The key technical points include a base for placing the mold base plate; a fixing mechanism disposed on the base for fixing the mold base plate to the base; an annular track disposed on the base; a displacement mechanism movably disposed on the annular track for adjustment along the track; and a lifting element disposed on the displacement mechanism for vertically lifting the sand box relative to the mold base plate, thus separating the mold from the sand mold. This solves the problems of difficult demolding, uneven demolding force, and impact on molding quality and production efficiency in resin sand molding of large castings.

Description

Top box stripping device for large casting resin sand molding

Technical Field

The utility model relates to the technical field of casting tools, in particular to a large casting resin sand molding top box stripping device.

Background

In the casting industry at present, a special molding die is generally adopted for manual molding of resin sand and matched with a special sand box, a casting mold is obtained through operations such as sand setting compaction, brush coating repair, core setting and the like, molten metal is poured into the casting mold, and a molded casting is obtained through solidification cooling and shakeout cleaning.

In the process of molding the sand box, a bottom plate of the mold is firstly required to be horizontally placed, then the sand box is sleeved above the bottom plate of the mold, resin sand is filled into the sand box, the sand box is tightly compacted and scraped, after the resin sand is hardened, the demolding operation is required to be carried out so as to separate the resin sand mold in the sand box from the mold, however, in the process of lifting in a driving manner, the resin sand in the sand box and the mold have larger binding force, the demolding force is uneven, the demolding is difficult, and the bottom plate of the mold is required to be manually knocked so as to separate the bottom plate of the mold, so that the process is time-consuming and labor-consuming, and meanwhile, the mold and the sand mold can be damaged, and the molding quality and the production efficiency are influenced.

At present, a scheme which is convenient for drawing a molding sand box needs to be developed and designed so as to meet the molding production requirement of single-piece small-batch medium-large-sized casting resin sand.

The above information is presented as background information only to aid in the understanding of the present disclosure and is not intended or admitted to be prior art relative to the present disclosure.

Disclosure of utility model

The utility model provides a large casting resin sand molding top box stripping device, which aims to solve the problems of insufficient molding quality and production efficiency in the prior art.

In order to achieve the above object, the present utility model provides the following technical solutions:

a large casting resin sand molding top box stripping device, comprising:

The base is used for placing the die bottom plate;

the fixing mechanism is arranged on the base and used for fixing the die bottom plate on the base;

The annular rail is arranged on the base;

the displacement mechanism is movably arranged on the annular track and can be adjusted along the annular track in a displacement manner;

And the lifting element is arranged on the displacement mechanism and is used for vertically jacking the sand box compared with the bottom plate of the die.

Preferably, the fixing mechanism includes:

the first driving assembly is arranged on the base;

the first clamping jaw assembly is arranged on the first driving assembly;

And the second clamping jaw assembly is arranged on the first driving assembly, the first driving assembly is used for driving the first clamping jaw assembly and the second clamping jaw assembly to be close to or far away from each other, and the first clamping jaw assembly and the second clamping jaw assembly are used for movably clamping two opposite sides of the die bottom plate.

Preferably, the first driving assembly includes:

the bidirectional screw rod is rotationally arranged on the base and is provided with a first thread section and a second thread section;

The first sliding block is arranged on the base in a sliding manner and is connected with the first threaded section, and the first clamping jaw assembly is arranged on the first sliding block;

the second sliding block is arranged on the base in a sliding manner and is connected with the second threaded section, and the second clamping jaw assembly is arranged on the second sliding block;

And the first motor is arranged on the base, is connected with the bidirectional screw rod and is used for driving the bidirectional screw rod to rotate.

Preferably, the displacement mechanism includes:

The mounting seat is arranged on the annular track in a sliding manner, and the lifting element is fixedly arranged on the mounting seat;

and the second driving assembly is arranged on the mounting seat and used for driving the mounting seat to be displaced and adjusted on the annular track.

Preferably, the mounting seat is provided with a second chute, the mounting seat is slidably arranged on the annular track through the second chute, the mounting seat is provided with a first roller and a second roller, the first roller is slidably abutted to the side face of the annular track, and the second roller is slidably abutted to the base.

Preferably, the second driving assembly includes:

The second motor is fixedly arranged on the mounting seat;

and the gear is fixedly arranged on the output shaft of the second motor, a gear ring is arranged on the annular track, and the gear is meshed with the gear ring.

Preferably, a placement platform is arranged at the top of the base, and the top of the placement platform is a placement plane.

Preferably, the lifting element is a hydraulic telescopic cylinder.

Preferably, the number of the displacement mechanisms arranged on the annular track is a plurality of the displacement mechanisms, and the plurality of the displacement mechanisms are distributed at intervals.

Preferably, the number of the displacement mechanisms is four, and the four displacement mechanisms are arranged in a rectangular shape.

Compared with the prior art, the utility model has the following beneficial effects:

According to the large casting resin sand molding top box stripping device, the die bottom plate is fixed through the fixing mechanism, the sand box is placed on the die bottom plate for sand filling compaction operation, after the resin sand is hardened, the lifting element is aligned with the flange on the outer side of the sand box through adjusting the position of the displacement mechanism on the annular track, the sand box is lifted under the lifting action of the lifting element, the stripping process is quick and convenient, the die bottom plate is not required to be damaged by knocking during stripping, the service life of the die bottom plate is prolonged, the production efficiency is improved, the displacement mechanism can be adjusted according to the size and shape of different sand boxes, and then the lifting element can be matched with sand box structures with different sizes, and the stripping requirement of single-piece small-batch casting resin sand molding is met.

The utility model has other features and advantages which will be apparent from or are set forth in detail in the accompanying drawings and the following detailed description, which are incorporated herein, taken in conjunction with the accompanying drawings and the detailed description, which illustrate certain principles of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a large casting resin sand molding top box drawing device provided by an embodiment of the utility model;

FIG. 2 is a schematic structural view of another view angle of a large casting resin sand molding top box drawing device provided by the embodiment of the utility model;

FIG. 3 is a schematic structural view of a fixing mechanism according to an embodiment of the present utility model;

FIG. 4 is a schematic view of a circular track and displacement mechanism according to an embodiment of the present utility model;

Fig. 5 is a schematic structural diagram of a displacement mechanism according to an embodiment of the present utility model.

Reference numerals:

1. A base, a placement platform, a base and a support;

2. The device comprises a fixing mechanism, a first driving assembly, a two-way screw rod, a 212, a first sliding block, a 213, a second sliding block, a 214, a first motor, a 22, a first clamping jaw assembly, a 23 and a second clamping jaw assembly, wherein the fixing mechanism is arranged on the first driving assembly;

3. 31, gear ring;

4. The device comprises a displacement mechanism, 41 parts of a mounting seat, 42 parts of a second driving assembly, 421 parts of a second motor, 422 parts of a gear;

5. Lifting element 6, first chute 7, second chute 8, first roller 9, second roller.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the embodiments described below are only some embodiments of the present utility model, not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it will be understood that when one component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present.

Furthermore, the terms "long," "short," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, for convenience of description of the present utility model, and are not intended to indicate or imply that the apparatus or elements referred to must have this particular orientation, operate in a particular orientation configuration, and thus should not be construed as limiting the utility model.

The technical scheme of the utility model is further described below by means of specific embodiments in combination with the accompanying drawings 1-5.

Referring to fig. 1, an embodiment of the utility model provides a large casting resin sand molding top box drawing device, which comprises a base 1, a fixing mechanism 2, an annular track 3, a displacement mechanism 4 and a lifting element 5.

The base 1 is used for placing a mold bottom plate, a mold body is arranged on the mold bottom plate, in the embodiment, the base 1 is of a plate-shaped structure, the mold bottom plate can be directly placed above the base 1, meanwhile, the fixing mechanism 2 is arranged on the base 1, when the mold bottom plate is placed on the base 1, the fixing mechanism 2 is close to two opposite sides of the mold bottom plate, the fixing mechanism 2 is used for fixing the mold bottom plate on the base 1, after the mold bottom plate is fixed, a sand box is placed above the mold bottom plate, resin sand is filled into the sand box, a casting mold sand box is obtained through compacting and strickling operations, and after the resin sand is hardened, the mold stripping operation is carried out.

At this time, the annular rail 3 is fixedly arranged on the base 1 and below the bottom plate of the die, and in this embodiment, the annular rail 3 has a circular contour, and at the same time, the displacement mechanism 4 is movably arranged on the annular rail 3 and can be displaced and adjusted along the annular rail 3.

Further, the lifting element 5 is arranged on the displacement mechanism 4, the displacement mechanism 4 can drive the lifting element 5 to displace on the annular track 3 until the lifting element 5 moves to the position right below the flange of the sand box, and after the lifting element 5 is displaced in place, the lifting element 5 is used for vertically and stably jacking the sand box compared with the bottom plate of the mould so as to realize the stripping operation.

Through adopting above-mentioned scheme, under the combined action of lifting element 5 and fixed establishment 2, can carry out the demolding separation with sand box and mould body and mould bottom plate, in the separation process, need not to strike and damage the mould bottom plate, improved the life of mould bottom plate, improved production efficiency to can adjust displacement mechanism 4 according to the size shape of different sand boxes, and then make lifting element 5 can adapt to the sand box structure of equidimension not, satisfied the molded demolding needs of single small batch foundry goods resin sand.

In one implementation manner provided in this embodiment, in order to enable the mold bottom plate to be stably placed on the base 1, a placement platform 11 is provided on the top of the base 1. Generally, the placement platform 11 is integrally connected with the base 1 or fixedly connected with each other to ensure the stability of the placement platform 11, on this basis, the top of the placement platform 11 is a placement plane, the placement plane is horizontally arranged, and the mold bottom plate can be horizontally and stably placed under the support of the placement plane by placing the mold bottom plate on the placement platform 11.

When the die bottom plate is placed on the base 1, the die bottom plate is fixed on the base 1 by the fixing mechanism 2, so that the die body and the die bottom plate are not easy to deviate in the process of filling resin sand, and the die and the sand mold are smoothly separated in the process of top box stripping.

Referring to fig. 2 and 3, the fixing mechanism 2 provided in the present embodiment includes a first driving assembly 21, a first jaw assembly 22, and a second jaw assembly 23. The first driving component 21 is disposed on the base 1 and is configured to output a reciprocating displacement motion in a horizontal direction, at this time, the first clamping jaw component 22 and the second clamping jaw component 23 are simultaneously disposed on the first driving component 21, and the first clamping jaw component 22 and the second clamping jaw component 23 are respectively located in directions of two opposite sides of the mold base, where the first driving component 21 is configured to drive the first clamping jaw component 22 and the second clamping jaw component 23 to approach or depart from each other, and the first clamping jaw component 22 and the second clamping jaw component 23 are configured to movably clamp two opposite sides of the mold base.

Preferably, for promoting the stability under the mould bottom plate clamping state, fixing mechanism 2 can also set up two sets of, and two sets of fixing mechanism 2 mutually perpendicular arranges on base 1, and then press from both sides tightly fixedly around to the mould bottom plate, guarantees that top case drawing action is more stable, and it can be understood that the figure that this embodiment provided only demonstrates the setting mode of a set of fixing mechanism 2, but the restriction under this scheme practical application state is not constituteed to the content that the figure demonstrates.

It can be appreciated that, based on the above-mentioned setting, when needing to fix the mould bottom plate, first drive assembly 21 drives first clamping jaw subassembly 22 and second clamping jaw subassembly 23 to be close to each other to first clamping jaw subassembly 22 and second clamping jaw subassembly 23 carry out the centre gripping to the opposite sides of mould bottom plate, realize fixing the centre gripping to the mould bottom plate, the in-process mould bottom plate that makes the sand box casting mould is difficult for the skew, when needing to take away the mould bottom plate, only need drive first clamping jaw subassembly 22 and second clamping jaw subassembly 23 keep away from each other can, convenient operation is swift.

Further, with continued reference to fig. 2 and 3, the first drive assembly 21 specifically includes a bi-directional screw 211, a first slider 212, a second slider 213, and a first motor 214. Wherein, the bidirectional screw rod 211 rotates and sets up in base 1, specifically, this embodiment has seted up first spout 6 on base 1 to first spout 6 is straight profile structure, and first spout 6 is the bottom opening setting of base 1, and bidirectional screw rod 211 can install in first spout 6 through the opening of bottom this moment. Generally, a bearing seat may be fixedly disposed in the chute, and an end portion of the bidirectional screw rod 211 may be fixedly mounted at the bearing seat to implement rotational mounting of the bidirectional screw rod 211, and a specific mounting manner of the bidirectional screw rod 211 is not limited herein, so long as the rotational manner of the bidirectional screw rod 211 can be implemented.

The bidirectional screw rod 211 is provided with a first thread section and a second thread section, the threads of the first thread section and the threads of the second thread section are opposite in rotation direction, the first slider 212 is slidably arranged on the base 1, the outline of the first slider 212 is matched with the shape of the first sliding groove 6, the surface of the first slider 212 is slidably abutted with the groove wall of the first sliding groove 6, the first slider 212 is further slidably arranged on the base 1, the first slider 212 is provided with a threaded hole in a penetrating mode, the bidirectional screw rod 211 penetrates through the threaded hole, the first slider 212 is in threaded connection with the first thread section through the first threaded hole, and at the moment, the first slider 212 can be enabled to reciprocate in the length range of the first thread section by rotating the bidirectional screw rod 211.

Correspondingly, the arrangement mode of the second slider 213 is the same as that of the first slider 212, the sliding structural shape outline of the second slider 213 is matched with the first chute 6, the second slider 213 is arranged on the base 1 through the first chute 6, a threaded hole is also formed in the second slider 213, the bidirectional screw rod 211 penetrates through the threaded hole, the second slider 213 is connected with the second threaded section through the threaded hole, the second slider 213 can be reciprocally displaced within the length range of the second threaded section by rotating the bidirectional screw rod 211, and the first slider 212 and the second slider 213 can be mutually close to or far away from each other when the bidirectional screw rod 211 rotates towards one direction because the threads of the first threaded section and the second threaded section are opposite in rotation direction.

Further, the first motor 214 is fixedly installed on the base 1, the output shaft of the first motor 214 is fixedly connected with the bidirectional screw rod 211, the first motor 214 adopts a servo motor, forward and reverse rotation torque can be output, the first motor 214 can drive the bidirectional screw rod 211 to rotate, and then the first sliding block 212 and the second sliding block 213 can be close to or far away from each other.

On the basis, the first clamping jaw assembly 22 is arranged on the first sliding block 212, the second clamping jaw assembly 23 is arranged on the second sliding block 213, and the first clamping jaw assembly 22 and the second clamping jaw assembly 23 can be mutually close to or far away from each other under the driving of the first sliding block 212 and the second sliding block 213, so that movable clamping action is realized.

It should be noted that, the base 1 is further provided with a first avoiding opening and a second avoiding opening which are simultaneously communicated with the first chute 6, the first clamping jaw assembly 22 is fixedly connected with the first slider 212 through the first avoiding opening, and the second clamping jaw assembly 23 is fixedly connected with the second slider 213 through the second avoiding opening, so that the first avoiding opening and the second avoiding opening can facilitate the assembly and fixing of the first clamping jaw assembly 22 and the second clamping jaw assembly 23, and in addition, the first clamping jaw assembly 22 and the second clamping jaw assembly 23 can adopt a clamping cylinder module, the specific structure of which is not repeated herein, and the module can be tried to use as long as the module can clamp and fix the die bottom plate.

Referring to fig. 4 and 5, in order to adjust the position of the lifting element 5, the displacement mechanism 4 includes a mount 41 and a second drive assembly 42. The mounting seat 41 is in a block structure in this embodiment, the second sliding grooves 7 penetrating through two sides are arranged on the mounting seat 41, the outline of the annular rail 3 is consistent with that of the second sliding grooves 7, the annular rail 3 is embedded into the second sliding grooves 7, the annular rail 3 is in sliding contact with the groove walls of the second sliding grooves 7, the mounting seat 41 is arranged on the annular rail 3 in a sliding manner, meanwhile, the lifting element 5 is fixedly arranged at the top of the mounting seat 41, and the lifting element 5 can drive the lifting element 5 to move when sliding on the annular rail 3, so that the placement position of the lifting element 5 can be adjusted.

Further, in order to improve the sliding smoothness of the mounting seat 41, the first roller 8 and the second roller 9 are rotatably mounted on the mounting seat 41. Specifically, the first roller 8 is slidably abutted with the side surface of the annular track 3, and the second roller 9 is slidably abutted with the base 1, so that a rolling friction effect can be provided for the mounting seat 41 under the action of the first roller 8 and the second roller 9, and the mounting seat 41 is smoother when sliding.

With continued reference to fig. 4 and 5, the second driving assembly 42 is disposed on the mounting seat 41, and the second driving assembly 42 is configured to drive the mounting seat 41 to perform displacement adjustment on the circular track 3, so as to implement automatic displacement control. Specifically, the second driving assembly 42 includes a second motor 421 and a gear 422, where the second motor 421 is a servo motor, the second motor 421 is fixedly mounted on one side of the mounting seat 41, the gear 422 is fixedly disposed on an output shaft of the second motor 421, a gear ring 31 is fixedly disposed on an inner side surface of the annular track 3, and the gear 422 is meshed with the gear ring 31.

Based on the above structure setting, through starting second motor 421, second motor 421 drives gear 422 rotation, at gear 422 pivoted in-process, through meshing with ring gear 31, and then promote mount pad 41 displacement, along with the forward rotation or the reverse rotation of control second motor 421, can realize the displacement adjustment function of lifting element 5 on annular track 3.

Further, the lifting element 5 in this embodiment is a hydraulic telescopic cylinder, and the hydraulic telescopic cylinder is connected with the hydraulic station to realize a telescopic control function, so that the hydraulic telescopic cylinder can provide larger thrust at this time, and the requirement of the stripping action of the large sand box can be well met.

Optionally, the number of the displacement mechanisms 4 disposed on the annular track 3 is multiple, and the multiple displacement mechanisms 4 are arranged at intervals, which can be understood that the number of the displacement mechanisms 4 on the annular track 3 can be two, four, eight or sixteen, and the specific number of the displacement mechanisms 4 can be correspondingly adjusted according to actual requirements, so that the specific number of the displacement mechanisms 4 is not limited.

In the embodiment, the four displacement mechanisms 4 are arranged in a rectangular shape, and at the moment, the four displacement mechanisms 4 are arranged to jack up the flanges around the sand box, so that the lift-up force of the sand box is balanced, unbalanced load is not easy, and the lift-up action is more stable and reliable.

Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (10)

1. A large casting resin sand molding top box stripping device, comprising:

a base (1) for placing a mold bottom plate;

The fixing mechanism (2) is arranged on the base (1) and is used for fixing the die bottom plate on the base (1);

an annular track (3) arranged on the base (1);

The displacement mechanism (4) is movably arranged on the annular track (3) and can be adjusted along the displacement of the annular track (3);

And a lifting element (5) arranged on the displacement mechanism (4) and used for vertically jacking the molding sand box relative to the bottom plate of the die.

2. The large casting resin sand molding top box drawing device according to claim 1, wherein the fixing mechanism (2) comprises:

a first drive assembly (21) provided to the base (1);

A first jaw assembly (22) provided to the first drive assembly (21);

And the second clamping jaw assembly (23) is arranged on the first driving assembly (21), the first driving assembly (21) is used for driving the first clamping jaw assembly (22) and the second clamping jaw assembly (23) to be close to or far away from each other, and the first clamping jaw assembly (22) and the second clamping jaw assembly (23) are used for movably clamping two opposite sides of the die bottom plate.

3. A large foundry sand moulding top box drawing device according to claim 2, characterized in that the first drive assembly (21) comprises:

The bidirectional screw rod (211) is rotatably arranged on the base (1) and is provided with a first thread section and a second thread section;

A first slider (212) slidably disposed on the base (1) and connected to the first threaded section, the first jaw assembly (22) being disposed on the first slider (212);

A second slider (213) slidably disposed on the base (1) and connected to the second threaded section, the second jaw assembly (23) being disposed on the second slider (213);

And a first motor (214) which is arranged on the base (1) and is connected with the bidirectional screw rod (211) and used for driving the bidirectional screw rod (211) to rotate.

4. A large casting resin sand moulding top box drawing device according to claim 1, characterized in that the displacement mechanism (4) comprises:

The mounting seat (41) is arranged on the annular track (3) in a sliding manner, and the lifting element (5) is fixedly arranged on the mounting seat (41);

And the second driving assembly (42) is arranged on the mounting seat (41) and is used for driving the mounting seat (41) to be displaced and adjusted on the annular track (3).

5. The large casting resin sand molding top box drawing device according to claim 4, wherein a second chute (7) is formed in the mounting seat (41), the mounting seat (41) is slidably arranged on the annular track (3) through the second chute (7), a first roller (8) and a second roller (9) are arranged on the mounting seat (41), the first roller (8) is slidably abutted with the side face of the annular track (3), and the second roller (9) is slidably abutted with the base (1).

6. The large foundry sand molding top box drawing device of claim 4 wherein the second drive assembly (42) comprises:

A second motor (421) fixedly arranged on the mounting seat (41);

And a gear (422) fixedly arranged on an output shaft of the second motor (421), wherein the annular track (3) is provided with a gear ring (31), and the gear (422) is meshed with the gear ring (31).

7. The large casting resin sand molding top box drawing device according to claim 1, wherein a placement platform (11) is arranged at the top of the base (1), and the top of the placement platform (11) is a placement plane.

8. A large casting resin sand moulding top box drawing device according to claim 1, characterized in that the lifting element (5) is a hydraulic telescopic cylinder.

9. The large casting resin sand molding top box drawing device according to claim 1, wherein the number of the displacement mechanisms (4) arranged on the annular track (3) is a plurality, and the plurality of the displacement mechanisms (4) are arranged at intervals.

10. The large casting resin sand molding top box drawing device according to claim 9, wherein the number of the displacement mechanisms (4) is four, and the four displacement mechanisms (4) are arranged in a rectangular shape.