阅读说明：本技术 一种用于泡沫塑料模型流涂的翻转机构和流涂方法 (Turnover mechanism for flow coating of foam plastic model and flow coating method ) 是由 成安华 余立新 胡启朋 汪思奇 程勇 于 2020-12-03 设计创作，主要内容包括：本发明公开了一种用于泡沫塑料模型流涂的翻转机构和流涂方法,其包括升降组件和翻转组件,所述翻转组件可升降的与所述升降组件连接,所述翻转组件包括沿Z轴向布置的上立架,所述上立架的两端连接有沿Y轴向布置的铰轴,所述铰轴上连接有下底架,所述下底架在驱动机构作用下能够绕所述铰轴旋转,所述下底架上可拆卸地连接有多个用于定位泡沫塑料模型的夹持组件,每个夹持组件与XOZ平面平行,相邻两个夹持组件沿Y轴向间隔布置。本发明解决了大型实型铸造模型捆绑耗时过长的难题,同时通过特殊结构设计将需要十几人搬运的大型模型变为只需要三四个人轻松地将模型转移到模型存放车上。(The invention discloses a turnover mechanism and a flow coating method for flow coating of a foam plastic model, and the turnover mechanism comprises a lifting assembly and a turnover assembly, wherein the turnover assembly is connected with the lifting assembly in a lifting manner, the turnover assembly comprises an upper vertical frame arranged along the Z-axis direction, two ends of the upper vertical frame are connected with hinge shafts arranged along the Y-axis direction, the hinge shafts are connected with a lower bottom frame, the lower bottom frame can rotate around the hinge shafts under the action of a driving mechanism, the lower bottom frame is detachably connected with a plurality of clamping assemblies for positioning the foam plastic model, each clamping assembly is parallel to an XOZ plane, and two adjacent clamping assemblies are arranged at intervals along the Y-axis direction. The invention solves the problem that the binding of the large-scale full-mold casting model consumes too long time, and simultaneously changes the large-scale model needing dozens of people to be carried into the model which is easily transferred to the model storage vehicle only by three or four people through the special structural design.)

1. A turnover mechanism for flow coating of a foam plastic model is characterized in that: including lifting unit (1) and upset subassembly (2), upset subassembly (2) liftable with lifting unit (1) is connected, upset subassembly (2) are including going up grudging post (2.1) of arranging along the Z axial, the both ends of going up grudging post (2.1) are connected with hinge (2.2) of arranging along the Y axial, be connected with down chassis (2.3) on hinge (2.2), chassis (2.3) can wind under the actuating mechanism effect hinge (2.2) are rotatory down, detachably is connected with a plurality of centre gripping subassemblies (4) that are used for fixing a position foamed plastic model (3) on chassis (2.3) down, and every centre gripping subassembly (4) are parallel with the XOZ plane, and two adjacent centre gripping subassemblies (4) are arranged along Y axial interval.

2. A turnover mechanism for flow coating of foam moulds as claimed in claim 1, characterised in that: the clamping assembly (4) comprises a lower cross bar (4.1) and an upper cross bar (4.2) which are arranged along the X axial direction, the lower cross bar (4.1) and the upper cross bar (4.2) are connected through a vertical rod (4.3) which is arranged along the Z axial direction, and the shape defined by the lower cross bar (4.1), the upper cross bar (4.2) and the vertical rod (4.3) corresponds to the shape of the foam plastic model (3).

3. A turnover mechanism for flow coating of foam moulds as claimed in claim 2, characterised in that: cushion blocks (4.4) are arranged between the lower cross rod (4.1), the upper cross rod (4.2) and the upright rod (4.3) and the foam plastic model (3).

4. A turnover mechanism for flow coating of foam moulds as claimed in claim 2, characterised in that: the lower cross bar (4.1) is T-shaped, and the lower cross bar (4.1) can be connected with the sliding groove arranged on the lower bottom frame (2.3) along the Y axis in a sliding fit manner in a lockable manner.

5. A turnover mechanism for flow coating of foam moulds as claimed in claim 2, characterised in that: the upright stanchion (4.3) is F-shaped, and the upright stanchion (4.3) can be lockingly and slidably inserted on the lower underframe (2.3).

6. A turnover mechanism for flow coating of foam moulds as claimed in claim 2, characterised in that: the upper cross rod (4.2) is connected with the vertical rod (4.3) through a locking device (4.5).

7. A turnover mechanism for flow coating of foam moulds as claimed in claim 1, characterised in that: and the locking device (4.5) is provided with a through hole for the upper cross rod (4.2) and the upright rod (4.3) to pass through and a threaded hole for locking the upper cross rod (4.2) and the upright rod (4.3).

8. A turnover mechanism for flow coating of foam moulds as claimed in claim 1, characterised in that: the lifting assembly (1) comprises a fixed rail (1.1) arranged along the Y axial direction, and a sliding chain hoist (6) is arranged on the fixed rail (1.1).

9. A turnover mechanism for flow coating of foam moulds as claimed in claim 8, characterised in that: and a lifting ring (5) used for connecting the lifting assembly (1) is arranged on the upper vertical frame (2.1).

10. A flow coating method for a foam plastic model comprises a coating power system, and is characterized in that: the flow coating of the foam pattern (3) in all planes is realized by a turnover mechanism for flow coating of the foam pattern according to any one of claims 1-9 in combination with a coating power system.

Technical Field

The invention discloses a flow coating method for a foam plastic model, belongs to the technical field of full mold casting, and particularly discloses a turnover mechanism and a flow coating method for flow coating of the foam plastic model.

Background

The full-mold casting technology is a casting method which adopts polystyrene foam plastics to make a model, paints the model with the paint and dries the model, and then molds and pours a casting by using a self-hardening resin sand process. In the full mold casting process of resin sand, the covering of the coating is one of the key technologies, and the coating plays roles of heat transfer, mass transfer, metal fluidity control and the like in the casting process. Compared with the common sand mold coating, the full mold casting coating is subjected to the mechanical impact of resin sand during molding, the scouring of molten metal during pouring and the pressure action of gas generated by gasification and combustion of a mold. The mass production practice shows that the properties of the coating not only can influence the gasification of the pattern and the migration of gas, but also have close relation with the surface quality, the internal defects and the like of the casting.

The coating of the lost foam cast iron model is a key process in the full mold casting process, and the common casting factory basically adopts manual painting of the foam plastic model. The manual model painting efficiency is low, the carrying and occupation manpower are more (20 persons are used when the maximum model is used), and the weight of the large model reaches about 700kg after the paint is painted.

The manual painting model has the following problems:

1) there are two big problems in artifical upset model and artifical transport model: firstly, much labor is needed, and secondly, unexpected damage (such as lateral bending deformation, model damage and the like) frequently occurs to the model in the overturning and carrying processes;

2) the manual model brushing efficiency is low, and the average is 8.8 gk/person.day;

the thickness of the manually painted model paint is not uniform. Up to 10mm in individual places (normally should be 1.5 to 2mm)

After the model enters the drying room, the drying time is long (more than 60 hours), and in recent years, some casting production plants try to manufacture a model overturning machine to solve the problem of model overturning in order to improve the quality and efficiency of coating of the model, but the model transferring is the link which occupies most manpower. Thereby an embarrassing situation appears: the coating and the model overturning use less people and the model transferring personnel are more. Meanwhile, the coating of the volume pump has the phenomena of flow break and splashing during flow coating.

Disclosure of Invention

In order to solve the technical problems, the invention provides a turnover mechanism and a flow coating method for flow coating of a foam plastic model, which solve the problem that the binding of a large-scale real casting model takes too long time, and simultaneously change the large-scale model needing dozens of people to be carried into a model storage vehicle by a special structural design and easily transfer the model to only three or four people.

The invention discloses a turnover mechanism for flow coating of a foam plastic model, which comprises a lifting assembly and a turnover assembly, wherein the turnover assembly is connected with the lifting assembly in a lifting way and comprises an upper vertical frame arranged along the Z axial direction, two ends of the upper vertical frame are connected with hinge shafts arranged along the Y axial direction, the hinge shafts are connected with a lower bottom frame, the lower bottom frame can rotate around the hinge shafts under the action of a driving mechanism, the lower bottom frame is detachably connected with a plurality of clamping assemblies for positioning the foam plastic model, each clamping assembly is parallel to an XOZ plane, and two adjacent clamping assemblies are arranged at intervals along the Y axial direction.

In a preferred embodiment of the invention, the clamping assembly comprises a lower cross rod and an upper cross rod which are arranged along the X axial direction, the lower cross rod and the upper cross rod are connected through vertical rods which are arranged along the Z axial direction, and the lower cross rod, the upper cross rod and the vertical rods are enclosed to form a shape corresponding to the shape of the foam plastic model.

In a preferred embodiment of the invention, cushion blocks are arranged between the lower cross bar, the upper cross bar and the upright bars and the foam plastic model.

In a preferred embodiment of the invention, the lower cross bar is T-shaped, and the lower cross bar is in sliding fit connection with a sliding groove arranged along the Y-axis on the lower chassis in a lockable manner.

In a preferred embodiment of the invention, the upright is F-shaped and is lockably slidably inserted onto the lower chassis.

In a preferred embodiment of the invention, the upper cross bar and the vertical bar are connected through a locking device.

In a preferred embodiment of the invention, the locking device is provided with through holes for the upper cross rod and the vertical rod to pass through and threaded holes for locking the upper cross rod and the vertical rod.

In a preferred embodiment of the invention, the lifting assembly comprises a fixed track arranged along the Y-axis, the fixed track being provided with a chain block.

In a preferred embodiment of the invention, the upper stand is provided with a lifting ring for connecting the lifting assembly.

The invention also discloses a flow coating method of the foam plastic model, which comprises a coating power system, wherein the flow coating of each plane of the foam plastic model is realized by matching the turnover mechanism of the flow coating of the foam plastic model with the coating power system; after the flow coating is finished, the discharging trolley is moved to a position under the lower bottom frame, foam strips for supporting the foam plastic model are placed at a proper position of the discharging trolley, the lifting assembly is used for lowering the height of the overturning assembly until the foam plastic model is supported on the foam strips, the clamping assembly on the lower bottom frame is disassembled, the lifting assembly is used for lifting the height of the overturning assembly until the lower bottom frame is separated from the foam plastic model, and the discharging trolley is moved to convey the foam plastic model to the next processing station.

The invention has the beneficial effects that: the turnover unloading mechanism is simple in structure and convenient to use, can quickly fix and unbind the large-scale full-mold casting model, effectively solves the problem that the binding of the large-scale full-mold casting model takes too long time, reduces the workload of manual coating, and can skillfully move the flow-coated large-scale full-mold casting model to the unloading trolley 7 by matching the turnover unloading mechanism with the unloading trolley, so that the large-scale model which originally needs dozens of people to carry is changed into a large-scale model which only needs three or four people to easily transfer the model to the model storage trolley, the labor intensity of workers is effectively reduced, the safety of the flow coating process is improved, and the coating using amount is saved.

Drawings

In order to more clearly illustrate the technical solution in implementation, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are embodiments of the present invention, and those skilled in the art can also obtain other drawings based on the drawings without creative efforts.

FIG. 1 is a schematic view of a turnover mechanism for flow coating of foam molds in accordance with the present invention;

FIG. 2 is a schematic view of a flip assembly of a flip mechanism for use in flow coating foam molds in accordance with the present invention;

FIG. 3 is a schematic horizontal view of the inverting assembly of an inverting mechanism for flow coating foam molds of the present invention;

FIG. 4 is a schematic illustration of the flip assembly in a flip state of a flip mechanism for use in flow coating foam molds in accordance with the present invention;

FIG. 5 is a schematic illustration of the flip assembly in a flip state of a flip mechanism for use in flow coating foam molds in accordance with the present invention;

FIG. 6 is a schematic view of a clamping assembly of a flipper for flow coating of foam molds in accordance with the present invention;

FIG. 7 is a schematic view showing the connection of the lower cross bar to the vertical bars in the clamping assembly of a turnover mechanism for flow coating of foam molds in accordance with the present invention;

FIG. 8 is a schematic view of the connection of the upper cross bar to the upright bars in the clamping assembly of a flipper for flow coating of foam molds in accordance with the present invention;

FIG. 9 is a schematic view of a discharge trolley of the turnover mechanism for flow coating of foam molds according to the present invention.

Detailed Description

The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, which illustrate some alternative embodiments of the invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.

The invention discloses a turnover mechanism for flow coating of a foam plastic model, which comprises a lifting component 1, a turnover component 2 and a discharge trolley 7, wherein the turnover component 2 is connected with the lifting component 1 in a lifting way, the turnover component 2 comprises an upper vertical frame 2.1 arranged along the Z axial direction, two ends of the upper vertical frame 2.1 are connected with a hinge shaft 2.2 arranged along the Y axial direction, the hinge shaft 2.2 is connected with a lower bottom frame 2.3, the lower bottom frame 2.3 can rotate around the hinge shaft 2.2 under the action of a driving mechanism, the lower bottom frame 2.3 is detachably connected with a plurality of clamping components 4 used for positioning the foam plastic model 3, each clamping component 4 is parallel to the XOZ plane, two adjacent clamping components 4 are arranged at intervals along the Y axial direction, and the projection area of the discharge trolley 7 on the XOY plane is smaller than that of the lower bottom frame 2.3 on the XOY plane.

In a preferred embodiment of the invention, the clamping assembly 4 comprises a lower cross bar 4.1 and an upper cross bar 4.2 which are arranged along the X-axis direction, the lower cross bar 4.1 and the upper cross bar 4.2 are connected through a vertical bar 4.3 which is arranged along the Z-axis direction, and the lower cross bar 4.1, the upper cross bar 4.2 and the vertical bar 4.3 enclose a shape corresponding to the shape of the foam model 3.

In a preferred embodiment of the invention, spacers 4.4 are arranged between the lower transverse bar 4.1, the upper transverse bar 4.2 and the upright bars 4.3 and the foam pattern 3.

In a preferred embodiment of the invention, the bottom rail 4.1 is T-shaped, and the bottom rail 4.1 is lockably connected with a sliding groove arranged along the Y-axis on the bottom chassis 2.3 in a sliding fit manner.

In a preferred embodiment of the invention, the upright 4.3 is F-shaped, the upright 4.3 is lockably slidably inserted into the lower frame 2.3, the upright 4.3 comprises a straight rod portion and an insertion rod portion, the insertion rod portion is U-shaped, and the insertion rod portion has a viewing opening corresponding to the shape of the lower cross rod 4.1.

In a preferred embodiment of the invention, the upper cross bar 4.2 and the vertical bar 4.3 are connected by a locking device 4.5.

In a preferred embodiment of the invention, the locking device 4.5 is provided with through holes for the upper cross bar 4.2 and the upright 4.3 to pass through and threaded holes for locking the upper cross bar 4.2 and the upright 4.3.

In a preferred embodiment of the invention, the lifting assembly 1 comprises a fixed track 1.1 arranged in the Y-axis direction, the fixed track 1.1 being provided with a chain block 6.

In a preferred embodiment of the invention, the upper stand 2.1 is provided with a lifting ring 5 for connection to the lifting assembly 1.

In a preferred embodiment of the invention, the driving mechanism is a motor reducer rotating system, the power of a motor is 2.2kw, and the overturning speed is 1-5 revolutions per minute

In a preferred embodiment of the invention, the discharging trolley 7 comprises a trolley base 7.1, universal wheels are arranged at the bottom of the trolley base 7.1, a plurality of detachable moving frames 7.2 are stacked above the trolley base 7.1, the trolley base 7.1 and the moving frames 7.2 are of square plate-shaped structures, and the trolley base 7.1 and the moving frame 7.2 at the bottommost end and the moving frames 7.2 are connected and supported through middle supports 7.3 and positioning cones 7.4. When the movable trolley is used, one to two movable foamed plastic models are placed on the trolley base 7.1, the large foamed plastic models are placed on the movable frame 7.2, the large models which are coated in a flowing mode are mechanically moved through a crane of the turnover machine, so that manual contact of the large models is reduced to the maximum extent, four to six universal wheels are installed at the bottom of the trolley base 7.1, and the movable trolley is convenient to move. One person or two persons put the small foam plastic model which can be moved and is sprayed with the coating on the vehicle bottom seat 7.1, place the larger foam plastic model on the model tilter on the movable frame 7.2 through a special lifting appliance, insert a middle bracket 7.3 on the vehicle bottom seat 7.1 after the model on the vehicle bottom seat is placed, then hang the movable frame 7.2 with the model above the vehicle bottom seat 7.1 layer by layer through a crown block, the movable frames 7.2 are supported and separated through the middle bracket 7.3, the cross sections of the vehicle bottom seat 7.1, the middle bracket 7.3 and the movable frame 7.2 are determined according to the size of the foam plastic model, the height of the middle bracket 7.3 is determined according to the height of the actual foam plastic model, and after the work is finished, the transport vehicle is manually pushed to a drying room to dry the model.

The invention also discloses a flow coating method of the foam plastic model, which comprises a coating power system, wherein the flow coating of each plane of the foam plastic model 3 is realized by matching the turnover mechanism of the flow coating of the foam plastic model with the coating power system; after the flow coating is finished, the discharging trolley 7 is moved to a position right below the lower base frame 2.3, a foam strip for supporting the foam plastic model 3 is placed at a proper position of the discharging trolley 7, the lifting assembly 1 is utilized to lower the height of the overturning assembly 2 until the foam plastic model 3 is supported on the foam strip, the clamping assembly 4 on the lower base frame 2.3 is disassembled, the lifting assembly 1 is utilized to raise the height of the overturning assembly 2 until the lower base frame 2.3 is separated from the foam plastic model 3, and the discharging trolley 7 is moved to convey the foam plastic model 3 to the next processing station.

In a preferred embodiment of the invention, the turnover component 2 is lifted to a height that the discharge trolley 7 can enter the lower part of the turnover component 2 through the lifting component 1, a foam strip is placed at a proper position of the discharge trolley 7, the height of the foam strip is 25 to 30mm higher than a cross bar inserted into the turnover component 2, the turnover component 2 falls to enable the foam strip to jack up the foam plastic model 3, the lower cross bar 4.1 is detached and leaves the turnover component 2, a plug pin at one end of the lower cross bar 4.1 is taken down, the lower cross bar 4.1 is drawn out from the other end, the turnover component 2 is lifted to a height higher than the foam plastic model 3, and the discharge trolley 7 is manually pushed out.

When the coating is dried for the first time and then flows for the second time, the overturning assembly 2 is lifted, the discharging trolley 7 is pushed to the lower part of the rack, the gap between the foam strip padded below the foam plastic model 3 and the inserted cross rod of the rack is properly adjusted, the cross rod is inserted, and the process above is repeated at the back, so that the dilemma that more than ten people need to lift the model is completely avoided.

In a preferred embodiment of the invention, the foam pattern is processed in the following specific steps, the detailed process of discharging the flow-coated pattern to the discharge trolley 7:

step 1, standing for 20 minutes after the model is well flow-coated, and fully flowing redundant coating into a coating pool below;

step 2, rotating the turnover assembly 2 with the model to a horizontal position;

step 3, the turnover component 2 is horizontally moved out of the coating pool, an upper transverse rod 4.2 and a vertical rod 4.3 of the turnover component 2 are removed, and further, the turnover component 2 is lifted to a proper height;

step 4, pushing the discharging trolley 7 to the lower part of the overturning component 2, and placing a foam plastic strip at a proper position, wherein the height of the foam plastic strip is greater than that of the cross bar of the rack;

step 5, the frame is sunk on the discharging trolley 7; at the moment, the model is pressed on the foam plastic strip of the discharging trolley 7 and leaves the lower cross bar 4.1 of the frame;

step 6, further, removing a height bolt of the lower cross rod 4.1 of the rack, and drawing out the lower cross rod 4.1;

step 7, lifting the turnover component 2 to be higher than the foamed plastic model 3 to push out the discharging trolley 7 and push the discharging trolley into a drying room to carry out model drying operation;

when the primary flow coating dried model is subjected to secondary flow coating:

step 8, pushing the discharging trolley 7 with the foamed plastic model 3 to the lower part of the raised frame;

step 9, inserting a cross rod and fixing a cross rod bolt;

step 10, lifting the frame and moving out the discharging trolley 7;

step 11, lowering the frame to the ground, and fixing the model upright stanchion, the upper cross bar and the protective cushion block

Step 12, translating the frame to the position above the coating pool for flow coating operation

The specific structure of the discharge trolley 7 of the invention can be seen in the patent CN209305606U, and the specific structure of the paint power system can be seen in the patent CN203540764U and the patent CN 203935941U.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and any modification, combination, replacement, or improvement made within the spirit and principle of the present invention is included in the scope of the present invention.