CN113146744A

CN113146744A - Lost foam mold model cutting forming device

Info

Publication number: CN113146744A
Application number: CN202110525000.3A
Authority: CN
Inventors: 田瑞锋; 方海军; 丁子忠
Original assignee: Chifeng Yuantai Casting Co ltd
Current assignee: Chifeng Yuantai Casting Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-07-23
Anticipated expiration: 2041-05-14
Also published as: CN113146744B

Abstract

The application provides a lost foam mold model cutting and forming device, which comprises a base; the positioning mechanism is connected with the base and used for positioning a workpiece to be cut; and the hot cutting mechanism comprises a driving motor and a hot cutting piece for converting electric energy into heat energy, the driving motor is connected with the base, the hot cutting piece is connected with an output shaft of the driving motor, and the driving motor is used for driving the hot cutting piece to rotate so as to enable the hot cutting piece to thermally cut a workpiece to be cut. The driving motor is adopted to drive the hot cutting piece to process the die model, the automation degree is high, the labor intensity is reduced, and the operation efficiency is improved. Meanwhile, errors generated when the die model is manufactured manually are reduced, and the manufacturing quality of the die model is improved, so that when the die model is used for casting parts, the forming quality of the parts is high, and the qualification rate of products is high.

Description

Lost foam mold model cutting forming device

Technical Field

The application relates to the field of mold processing, in particular to a lost foam mold model cutting and forming device.

Background

Lost foam casting (also called solid casting) is a novel casting method which comprises the steps of bonding and combining paraffin or foam models with similar sizes and shapes to form a model cluster, coating refractory paint on the model cluster, drying the model cluster, burying the model cluster in dry quartz sand for vibration modeling, pouring under negative pressure to gasify the model, enabling liquid metal to occupy the position of the model, solidifying and cooling the model cluster to form a casting. Generally, a lost foam mold model for casting needs to be processed separately and then assembled into a whole, and at present, the lost foam mold model is manufactured manually, so that the efficiency is low, the error is large, and the quality of the mold model is low.

Disclosure of Invention

The application provides a disappearance mould model cutting forming device to improve the above-mentioned technical problem that adopts manual work mould model to lead to the model quality to hang down, fashioned work piece low in quality.

The invention is particularly such that:

based on above-mentioned purpose, this application embodiment provides a disappearance mould model cutting forming device, includes:

a base;

the positioning mechanism is connected with the base and used for positioning a workpiece to be cut;

and the hot cutting mechanism comprises a driving motor and a hot cutting piece for converting electric energy into heat energy, the driving motor is connected with the base, the hot cutting piece is connected with an output shaft of the driving motor, and the driving motor is used for driving the hot cutting piece to rotate so as to enable the hot cutting piece to be subjected to hot cutting.

Optionally, the hot cutting piece comprises a bearing plate and a hot cutter, the bearing plate is connected with an output shaft of the driving motor, the hot cutter is connected with the bearing plate, and the hot cutter is used for hot cutting the workpiece to be cut.

Optionally, the hot cutter includes a plurality of hot cutting portions arranged in an annular shape, each hot cutting portion is arc-shaped, and the diameters of circles where the plurality of hot cutting portions are located are different;

the bearing plate is connected with an output shaft of the driving motor in an unlocking mode through a locking piece, and when the bearing plate is locked with the output shaft, the driving motor can drive the bearing plate to rotate; when the bearing plate is unlocked from the output shaft, the bearing plate can rotate relative to the driving motor and is locked after rotating, so that one of the plurality of hot cutting parts corresponds to the workpiece to be cut, and the workpiece to be cut can be thermally cut.

Optionally, the locking element is a bolt, and the bolt is in sliding fit with the output shaft along the axial direction of the output shaft; the bearing plate is provided with a plurality of jacks distributed around the axis of the output shaft, and the bolt can be selectively in inserted connection with one of the jacks, so that the bearing plate and the output shaft are relatively fixed in the circumferential direction of the output shaft through the bolt.

Optionally, the hot cutting mechanism further comprises a connecting arm, one end of the connecting arm is connected with the driving motor, the other end of the connecting arm is connected with the hot cutting piece, and the hot cutting piece can slide relative to the connecting arm in the extending direction of the connecting arm so as to adjust the cutting radius of the hot cutting piece.

Optionally, the connecting arm is provided with scale marks.

Optionally, the hot cutting mechanism further comprises a power line, one end of the power line is connected with the hot cutting piece, and the other end of the power line is used for being connected with a power supply; the connecting arm is provided with a channel through which a power supply wire penetrates, and the power supply wire is used for transmitting electric energy to the hot cutting piece.

Optionally, the heat cutting member is detachably connected to the output shaft.

Optionally, the positioning mechanism includes a positioning table and a positioning fixture, the base is connected to the positioning table, the positioning fixture is connected to the positioning table, and the positioning fixture is used for clamping the workpiece to be cut.

Optionally, the number of the positioning fixtures is multiple, and the multiple positioning fixtures are arranged on the movement path of the hot-cut piece at intervals, so that the hot-cut piece rotates for a circle to thermally cut multiple workpieces to be cut.

The invention has the beneficial effects that:

in summary, the lost foam mold model cutting and forming device provided in this embodiment, when cutting is performed on a workpiece to form a mold model, the workpiece is positioned on the positioning mechanism, then the driving motor is started, the driving motor drives the heated hot-cut piece to rotate, in the rotating process of the hot-cut piece, the part of the workpiece contacting the hot-cut piece is hot-cut, the cut part is a waste material, and the part of the workpiece remaining on the positioning mechanism is a required mold model. The driving motor is adopted to drive the hot cutting piece to process the die model, the automation degree is high, the labor intensity is reduced, and the operation efficiency is improved. Meanwhile, errors generated when the die model is manufactured manually are reduced, and the manufacturing quality of the die model is improved, so that when the die model is used for casting parts, the forming quality of the parts is high, and the qualification rate of products is high.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is a schematic structural diagram of a lost foam mold model cutting and forming device provided by the present application;

FIG. 2 is a schematic diagram of a modified structure of the thermal cutting mechanism provided herein;

FIG. 3 is a schematic cross-sectional view of a thermal cutting mechanism provided herein;

fig. 4 is a schematic structural diagram of a hot cutter provided in the present application.

Icon:

100-a base; 200-a positioning mechanism; 210-a foot rest; 220-a positioning table; 230-positioning the clamp; 300-hot cutting mechanism; 310-a drive motor; 311-an output shaft; 320-hot cutting; 321-a carrier plate; 3211-a jack; 322-a rotating seat; 3221-a through hole; 323-hot knife; 3231-hot cutting; 324-a locking member; 330-connecting arm.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of the orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is conventionally understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, and it is not intended to indicate or imply that the indicated lost foam mold model cutting and forming device or element must have a specific orientation, be configured and operated in a specific orientation, and thus, cannot be understood as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may for example be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

at present, the lost foam mold is generally processed manually, and the cavity of the mold model is processed manually to meet the required requirements. The cost is increased due to low efficiency of manual operation. In addition, during manual operation, according to different experiences of workers, operation states and the like, the processing quality of the die model is greatly different, namely, the error, the difference and the interchangeability of the manually manufactured die model are large, so that the forming quality of the lost foam is poor and the yield of the product is low.

Referring to fig. 1-4, in view of this, the designer designs a lost foam mold model cutting and forming device, which has high automation degree and high processing efficiency; the method has the advantages of small error, good interchangeability, high quality of the lost foam obtained by assembling the die model and high qualification rate of products obtained by casting the lost foam.

Referring to fig. 1-4, in the present embodiment, the lost foam mold cutting apparatus includes a base 100, a positioning mechanism 200, and a thermal cutting mechanism 300. The base 100 is used to be fixed on the ground or on a work table. A positioning mechanism 200 is coupled to the base 100, the positioning mechanism 200 being used to position a work piece to be cut. The hot cutting mechanism 300 comprises a driving motor 310 and a hot cutting member 320 for converting electric energy into heat energy, the driving motor 310 is connected with the base 100, the hot cutting member 320 is connected with an output shaft 311 of the driving motor 310, and the driving motor 310 is used for driving the hot cutting member 320 to rotate, so that the hot cutting member 320 thermally cuts a workpiece to be cut.

When the lost foam mold model cutting and forming device provided by this embodiment cuts a workpiece to form a mold model, the workpiece is first positioned on the positioning mechanism 200, then the driving motor 310 is started, the driving motor 310 drives the heated hot-cut piece 320 to rotate, during the rotation of the hot-cut piece 320, the part of the workpiece contacting with the hot-cut piece 320 is hot-cut, the cut part is scrap, and the part remaining on the positioning mechanism 200 is the required mold model. The driving motor 310 is adopted to drive the hot cutting piece 320 to process the die model, the automation degree is high, the labor intensity is reduced, and the operation efficiency is improved. Meanwhile, errors generated when the die model is manufactured manually are reduced, and the manufacturing quality of the die model is improved, so that when the die model is used for casting parts, the forming quality of the parts is high, and the qualification rate of products is high.

It should be understood that the lost foam mold model provided in this embodiment is made of foam, that is, the workpiece to be cut is made of foam, so that the thermal cutting member 320 can be heated and then subjected to thermal cutting.

In this embodiment, optionally, the base 100 is configured as a metal frame structure, so that the structural strength of the base 100 is high, the base is not easily damaged in the using process, and the service life is long. Obviously, in other embodiments, the base 100 may be made of plastic, wood, or other materials.

In this embodiment, optionally, the positioning mechanism 200 includes a foot rest 210, a positioning table 220 and a positioning fixture 230, the foot rest 210 is connected to the positioning table 220, the positioning fixture 230 is connected to the positioning table 220, and the positioning fixture 230 is used for clamping and positioning a workpiece to be cut.

Specifically, foot rest 210 sets up to extending structure, and the one end and the location platform 220 of foot rest 210 are connected, and the other end is provided with the ground walking wheel of can braking, and the height of foot rest 210 can be adjusted to adapt to laying of different environment, also convenient to use. It should be understood that the number of the foot rests 210 is set as required, and is not particularly limited in this embodiment.

Optionally, the positioning table 220 is a circular plate, a plurality of foot rests 210 are mounted on the bottom plate surface of the positioning table 220, and the plurality of foot rests 210 are all used for supporting on the ground. Be provided with the assembly groove on the top face of location platform 220, the assembly groove sets up to the annular groove, and the assembly groove extends around the axis of location platform 220. The mounting slot may be a dovetail slot or a "T" slot or the like. The base 100 is arranged at the middle position of the positioning table 220, and the axis of the base 100 is collinear with the axis of the positioning table 220.

Positioning fixture 230 includes two splint of relative setting, two splint all with locating station 220 swing joint, for example, two splint all with the assembly groove sliding connection on the locating station 220 to can adjust the interval between two splint, can adapt to the not unidimensional centre gripping of waiting to cut the work piece. It should be understood that the clamping plate is provided with a convex part matched with the assembling groove, so that the clamping plate can not fall off from the assembling groove while being ensured to slide relative to the positioning table 220, and the safety is high. The inboard of every splint is provided with the flexible layer, can improve the clamp force to can reduce the damage to the work piece when splint press from both sides tight work piece.

Further, each clamping plate is fixed on the positioning table 220 through a bolt, and when the position of the clamping plate needs to be adjusted, the bolt is loosened, and the clamping plate can slide in the assembling groove relative to the positioning table 220. When the clamping plate slides to the position for clamping the workpiece, the bolt is tightened to fix the clamping plate and the positioning table 220.

In other embodiments, the positioning fixture 230 may be configured as a robotic arm with which to hold the workpiece.

Or in other embodiments, the electromagnets are arranged on the two clamping plates, when the electromagnets are powered on, the electromagnets on the two clamping plates can generate the same magnetic pole or different magnetic poles, and when the magnetic poles of the two electromagnets are the same, the two clamping plates repel each other, so that the workpiece can be conveniently taken down. When the magnetic poles of the two electromagnets are different, the two clamping plates are close to each other.

In this embodiment, optionally, the driving motor 310 is disposed on the base 100, and the output shaft 311 of the driving motor 310 is collinear with the axis of the base 100 or the positioning table 220. The driving motor 310 may be a servo motor for easy manipulation.

In this embodiment, optionally, the thermal cutting mechanism 300 further includes a connecting arm 330, one end of the connecting arm 330 is sleeved outside the output shaft 311, the connecting arm 330 and the output shaft 311 are relatively fixed in the circumferential direction of the output shaft 311, and the output shaft 311 can drive the connecting arm 330 to rotate relative to the base 100 and the positioning table 220. The thermal cutting element 320 is connected to the connecting arm 330, so that the thermal cutting element 320 can be driven to rotate by the connecting arm 330, and the workpiece on the positioning fixture 230 can be thermally cut by the thermal cutting element 320.

Optionally, the connecting arm 330 is a rectangular rod, one end of the connecting arm 330 is provided with a trepan, and the connecting arm 330 is sleeved outside the output shaft 311 by using the trepan. The length of the connecting arm 330 extends in a direction perpendicular to the output shaft 311, in other words, the connecting arm 330 is disposed perpendicular to the output shaft 311.

Optionally, the hot cutting member 320 includes a bearing plate 321, a rotating base 322 and a hot cutter 323, the hot cutter 323 is connected to the bearing plate 321, and the bearing plate 321 is connected to the rotating base 322 through a locking member 324 in an unlocking manner. The rotating base 322 is slidably engaged with the connecting arm 330 in the extending direction of the connecting arm 330. In this way, by adjusting the position of the rotating base 322 on the connecting arm 330, the rotating radius of the rotating base 322 and the bearing plate 321 can be adjusted, and the rotating radius of the hot knife 323 on the bearing plate 321 can be adjusted. For example, the rotating base 322 is sleeved outside the connecting arm 330 and fixed by a bolt, and after the bolt is loosened, the rotating base 322 and the connecting arm 330 can slide relatively to adjust the position of the rotating base 322. Furthermore, scale marks are arranged on the connecting arm 330, and the specific position of the rotating seat 322 is judged through the scale marks, so that the rotating radius of the rotating seat 322 can be conveniently determined, and the adjustment is convenient and reliable. The rotating seat 322 is provided with a through hole 3221, and the locking member 324 is provided as a latch, the latch is inserted into the through hole 3221, and the latch can slide relative to the through hole 3221 along the extending direction of the through hole 3221. The carrier plate 321 is rotatably connected to the rotating base 322, and the rotating circumferences of the two are parallel to the axis of the output shaft 311. For example, the carrier plate 321 is provided with a plurality of insertion holes 3211 arranged at intervals around the axes of the two, and the insertion holes 3211 may be blind holes or through holes 3221. The latch can be selectively inserted into one of the plurality of receptacles 3211. After the plug is plugged into the through hole 3221 and the insertion hole 3211, the supporting plate 321 and the rotating base 322 are fixed by the plug, and the supporting plate 321 and the rotating base 322 cannot rotate relatively. When the latch is pulled out of the socket 3211, the supporting plate 321 can rotate relative to the rotating base 322.

The hot cutter 323 comprises a plurality of hot cutting portions 3231, the plurality of hot cutting portions 3231 are arranged at intervals in the circumferential direction of the bearing plate 321, each hot cutting portion 3231 is an arc-shaped portion, further, each hot cutting portion 3231 is an arc-shaped portion, the diameters of circles where the plurality of hot cutting portions 3231 are located are different, or the radians of the plurality of hot cutting portions 3231 are different, so that one of the plurality of hot cutting portions 3231 can be selected as required to be used for hot cutting of the workpiece. In other words, the hot cutter 323 is mounted on the carrier plate 321, the plurality of hot cutting portions 3231 are sequentially arranged around the rotation axis of the carrier plate 321 and the rotation base 322, when one hot-cut workpiece in the plurality of hot-cut portions 3231 needs to be adjusted, the pin is pulled out of the insertion hole 3211, then the carrier plate 321 is rotated, the carrier plate 321 drives the plurality of hot-cut portions 3231 to rotate together, when the corresponding hot-cut portion 3231 is rotated to be matched with the workpiece on the positioning fixture 230, the rotation of the carrier plate 321 is stopped, and then the pin is inserted into the corresponding insertion hole 3211, thereby completing the adjustment of the hot-cut portion 3231. The hot cutting part 3231 with different radians can be selected to hot cut the workpiece as required, and the hot cutting device is flexible to use, diversified in function and wide in application range. Also, integrating the hot cut portions 3231 that cut different sizes reduces the cost of the device.

It should be understood that the hot knife 323 may be made of a heating wire; alternatively, the hot knife 323 is made using a hot plate. And, when the hot cutter 323 is set as a heating wire, the heating wire is a ring structure extending around the axis of the bearing plate 321, and the heating wire has a plurality of bending sections in the extending direction thereof, so that the strength of the heating wire is enhanced, the heating wire is not easily deformed during the operation, and the cutting effect is good. It should be understood that each heating section may include a plurality of bending sections, with different bending sections forming heating sections of different arcs. For example, the plurality of bent segments may be rectangular waves.

In this embodiment, the thermal cutting mechanism 300 further includes a power cord, which is inserted into a channel inside the connecting arm 330, and is extended out of the connecting arm 330 and electrically connected to the thermal cutting element 320 on the bearing plate 321. The other end of the power cord is provided with a plug which can be plugged with a socket, so that electric energy is transmitted to the hot-cutting piece 320, the hot-cutting piece 320 converts the electric energy into heat energy, and then the workpiece is hot-cut.

The cutting forming device that this embodiment provided, degree of automation is high, and the operating efficiency is high, simultaneously, can adapt to the cutting of the work piece of unidimensional not, and application range is wide, and is with low costs.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a disappearance mould model cutting forming device which characterized in that includes:

a base;

2. The lost foam mold pattern cutting and forming apparatus according to claim 1, characterized in that:

the hot cutting piece comprises a bearing plate and a hot cutter, the bearing plate is connected with an output shaft of the driving motor, the hot cutter is connected with the bearing plate, and the hot cutter is used for hot cutting the workpiece to be cut.

3. The lost foam mold pattern cutting and forming apparatus according to claim 2, characterized in that:

the hot cutter comprises a plurality of hot cutting parts which are annularly arranged, each hot cutting part is arc-shaped, and the diameters of circles where the hot cutting parts are located are different;

4. The lost foam mold pattern cutting and forming apparatus according to claim 3, characterized in that:

the locking piece is arranged as a bolt, and the bolt is in sliding fit with the output shaft along the axial direction of the output shaft; the bearing plate is provided with a plurality of jacks distributed around the axis of the output shaft, and the bolt can be selectively in inserted connection with one of the jacks, so that the bearing plate and the output shaft are relatively fixed in the circumferential direction of the output shaft through the bolt.

5. The lost foam mold pattern cutting and forming apparatus according to claim 1, characterized in that:

the hot cutting mechanism further comprises a connecting arm, one end of the connecting arm is connected with the driving motor, the other end of the connecting arm is connected with the hot cutting piece, and the hot cutting piece can slide relative to the connecting arm in the extending direction of the connecting arm so as to adjust the cutting radius of the hot cutting piece.

6. The lost foam mold pattern cutting and forming apparatus according to claim 5, characterized in that:

and the connecting arm is provided with scale marks.

7. The lost foam mold pattern cutting and forming apparatus according to claim 5, characterized in that:

the hot cutting mechanism further comprises a power line, one end of the power line is connected with the hot cutting piece, and the other end of the power line is used for being connected with a power supply; the connecting arm is provided with a channel through which a power supply wire penetrates, and the power supply wire is used for transmitting electric energy to the hot cutting piece.

8. The lost foam mold pattern cutting and forming apparatus according to claim 1, characterized in that:

the hot cutting member is detachably connected with the output shaft.

9. The lost foam mold pattern cutting and forming apparatus according to claim 1, characterized in that:

the positioning mechanism comprises a positioning table and a positioning clamp, the base is connected with the positioning table, the positioning clamp is connected with the positioning table, and the positioning clamp is used for clamping the workpiece to be cut.

10. The lost foam mold pattern cutting and forming apparatus according to claim 9, characterized in that:

the positioning clamps are arranged in a plurality of numbers, and the positioning clamps are arranged on the movement path of the hot cutting piece at intervals, so that the hot cutting piece rotates for a circle to thermally cut a plurality of workpieces to be cut.