CN109304428B - Vertical core shooter, die mounting mechanism for vertical core shooter and cold core making method - Google Patents
Vertical core shooter, die mounting mechanism for vertical core shooter and cold core making method Download PDFInfo
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- CN109304428B CN109304428B CN201811351210.XA CN201811351210A CN109304428B CN 109304428 B CN109304428 B CN 109304428B CN 201811351210 A CN201811351210 A CN 201811351210A CN 109304428 B CN109304428 B CN 109304428B
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- blowing head
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- 230000007246 mechanism Effects 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000004576 sand Substances 0.000 claims abstract description 212
- 238000007664 blowing Methods 0.000 claims abstract description 155
- 230000006835 compression Effects 0.000 claims abstract description 23
- 238000007906 compression Methods 0.000 claims abstract description 23
- 238000004064 recycling Methods 0.000 claims abstract description 9
- 238000011084 recovery Methods 0.000 claims description 22
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 21
- 238000000465 moulding Methods 0.000 claims description 9
- 238000005056 compaction Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012840 feeding operation Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 2
- 230000007306 turnover Effects 0.000 claims 1
- 238000007711 solidification Methods 0.000 description 17
- 230000008023 solidification Effects 0.000 description 17
- 238000009434 installation Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 244000035744 Hura crepitans Species 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C15/00—Moulding machines characterised by the compacting mechanism; Accessories therefor
- B22C15/23—Compacting by gas pressure or vacuum
- B22C15/24—Compacting by gas pressure or vacuum involving blowing devices in which the mould material is supplied in the form of loose particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C19/00—Components or accessories for moulding machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
Abstract
The invention provides a vertical core shooter, a die mounting mechanism for the vertical core shooter and a cold core making method, wherein the vertical core shooter comprises a frame, a hopper, a guide rail, a sand shooting barrel, a blowing head, a compression cylinder, a die assembly, a die mounting mechanism and a residual sand recycling tank; the hopper and the compression cylinder are fixedly arranged at the top of the frame; a sand shooting barrel mounting frame is arranged on the guide rail in a sliding manner; the die assembly comprises a fixed die and a movable die; a mold opening and closing cylinder for driving the movable mold is arranged on the frame; the die mounting mechanism comprises a fixed die mounting seat, a movable die mounting seat, a connecting column and a guide column; cavities are formed in the fixed die mounting seat and the movable die mounting seat, and the connecting column and the guide column are hollow columns with two open ends. The vertical core shooter has small comprehensive occupied area, reduces the consumption of blowing curing gas, shortens the blowing curing time and greatly improves the working efficiency.
Description
Technical Field
The invention relates to a core sand production device, in particular to a vertical core shooter and a use method thereof.
Background
At present, in the field of casting mechanical equipment, core-making technology of a core shooter is widely used, and the core shooter uniformly shoots core sand into a sand box by compressed air for pre-compaction, and then applies pressure for compaction. The core manufactured by the core shooter has accurate size and smooth surface. The core shooter can not only save a plurality of auxiliary equipment and tools for core making, but also lighten the labor intensity, create conditions for mechanization and automation in the core making process, and has good application prospect. However, the residual sand in the sand shooting mechanism in the core shooter is not easy to recycle, and the waste of core sand is easily caused. In addition, a blowing head in a blowing gas curing device of a vertical cold box core shooter in the market is pressed on a mold from above, blowing downwards from above, and because the size of the mold in the vertical direction is relatively large, and the sand core is cured from top to bottom in the curing sequence, the upper part of the sand core can be cured when the lower part of the sand core is not completely cured, and thus the phenomena of incomplete curing of the lower part of the sand core, consumption of a large amount of triethylamine, long blowing time and the like can occur.
Disclosure of Invention
The invention aims to provide a vertical core shooter, which aims to solve the problems of serious waste of residual sand, incomplete sand core solidification and low working efficiency in the existing core shooter.
The second purpose of the invention is to provide a die mounting mechanism for a vertical core shooter, so as to solve the problem of uneven sand core solidification in the use process of the conventional core shooter.
The invention aims at providing a core making method of the cold core, which aims at solving the problems of uneven sand core solidification, large gas consumption required by sand core solidification and long blowing time in the existing core making process of the cold core.
One of the objects of the present invention is achieved by:
a vertical core shooter comprises a frame, a hopper, a guide rail, a sand shooting barrel, a blowing head, a compression cylinder, a die assembly, a die mounting mechanism and a residual sand recycling groove;
the compaction cylinder, the guide rail, the sand shooting barrel and the die assembly are sequentially arranged from top to bottom; the hopper and the compression cylinder are fixedly arranged at the top of the frame, the guide rail is horizontally arranged on the frame, and the guide rail is positioned below the compression cylinder; a sand shooting barrel mounting frame for mounting the sand shooting barrel is arranged on the guide rail in a sliding manner;
the die assembly comprises a fixed die and a movable die, and a cavity for molding core sand is formed after the movable die and the fixed die are clamped; the frame is provided with a mold opening and closing cylinder for driving the movable mold to move along the mold opening and closing direction;
the die mounting mechanism comprises a fixed die mounting seat, a movable die mounting seat, a connecting column and a guide column; the fixed die mounting seat and the movable die mounting seat are both cuboid, cavities are formed in the fixed die mounting seat and the movable die mounting seat, the connecting column and the guide column are hollow columns with two open ends, and the guide column is arranged on the frame in a sliding manner; one end of the connecting column is communicated with the cavity in the fixed die mounting seat; one end of the guide post is communicated with the cavity in the movable die mounting seat; a plurality of airflow through holes are horizontally arranged on the fixed die and the movable die; one end of the airflow through hole arranged on the fixed die mould is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the fixed die mounting seat; one end of the airflow through hole arranged on the movable die is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the movable die mounting seat.
The guide rail is provided with a blowing head mounting frame for mounting the blowing head in a sliding manner, the blowing head mounting frame is arranged in parallel with the sand shooting barrel mounting frame, the blowing head mounting frame is connected with the sand shooting barrel mounting frame through a quick clamp, the sand shooting barrel is positioned under the hopper when the blowing head moves to be right above a die assembly after die assembly, and a blowing head driving cylinder for driving the blowing head mounting frame to slide along the guide rail is arranged on the frame.
The blowing head driving cylinder is a swing arm cylinder.
The frame is provided with a movable mould overturning device for driving the movable mould to overturn.
The residual sand recycling groove is arranged in the middle of the frame along the vertical direction, the residual sand recycling groove is arranged on the hopper installation side of the frame, and the top end of the residual sand recycling groove is lower than the bottom end of the fixed die.
And electric heating components for heating and solidifying the core sand in the cavity are arranged on the movable die mounting seat and the fixed die mounting seat.
According to the invention, the sand shooting barrel mounting frame for mounting the sand shooting barrel and the blowing head mounting frame for mounting the blowing head are arranged on the guide rail in a sliding manner, the sand shooting barrel mounting frame and the blowing head mounting frame are arranged in parallel in the horizontal direction, and the sand shooting barrel mounting frame and the blowing head mounting frame are fixedly connected through the quick clamp. After the quick clamp is opened, the sand shooting barrel and the blowing head are quickly separated, and the sand shooting barrel can be independently and quickly moved to the upper part of the residual sand recovery tank to discharge residual sand, so that the residual sand recovery tank can quickly remove residual sand, and the site quick cleaning is convenient.
The vertical core shooter has small comprehensive occupied area, reduces the consumption of blowing curing gas, shortens the blowing curing time, greatly improves the working efficiency, improves the yield of sand cores and market competitiveness, and has great popularization value.
The second object of the invention is realized in that:
a die mounting mechanism for a vertical core shooter comprises a fixed die mounting seat, a movable die mounting seat, a connecting column and a guide column; the fixed die mounting seat and the movable die mounting seat are both in cuboid shapes, cavities are formed in the fixed die mounting seat and the movable die mounting seat, the connecting column and the guide column are hollow columns with two open ends, and the guide column is arranged on the frame in a sliding manner; one end of the connecting column is communicated with the cavity in the fixed die mounting seat; one end of the guide post is communicated with the cavity in the movable die mounting seat; a plurality of airflow through holes are horizontally arranged on the fixed die and the movable die; one end of the airflow through hole arranged on the fixed die mould is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the fixed die mounting seat; one end of the airflow through hole arranged on the movable die is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the movable die mounting seat.
And one end of the connecting column, which is opposite to the mounting end of the fixed die mounting seat, is communicated with an exhaust gas discharge pipe, and one end of the guide column, which is opposite to the mounting end of the movable die mounting seat, is communicated with a curing gas input pipe for conveying gas required by sand core molding.
According to the invention, the connecting column and the guide column are both hollow columns with two open ends, when core sand in a cavity is subjected to air blowing solidification, according to an air blowing forming process, air blowing solidification operation from right to left can be carried out on the core sand through the solidification gas input pipe from the right side of the die assembly, and solidification can be carried out through air blowing downwards and air blowing leftwards simultaneously through the air blowing head above the die assembly and the solidification gas input pipe on the right side of the die assembly, large-area air blowing solidification on the core sand can be realized when the core sand is solidified from the right side of the die assembly leftwards, the gas can rapidly solidify the core sand, the core sand at the lower part of the cavity is also easily and rapidly solidified, the consumption of solidification gas triethylamine can be saved by about 50%, the time for forming each die sand core is saved by more than 5 seconds, the production cost is greatly reduced, and the production efficiency is greatly improved. The die mounting mechanism for the vertical core shooter not only has the functions of mounting and guiding the die assembly, but also can realize the function of horizontally blowing and solidifying the core sand in the cavity, so that the structure of the core shooter is more compact.
The third object of the present invention is achieved by:
a method for making a cold core, comprising the steps of:
a. preparing the vertical core shooter, wherein the vertical core shooter comprises a frame, a hopper, a guide rail, a sand shooting barrel, a blowing head, a compression cylinder, a mold assembly, a mold mounting mechanism and a residual sand recycling groove, the mold assembly comprises a fixed mold and a movable mold, a sand shooting barrel mounting frame for mounting the sand shooting barrel is slidably arranged on the guide rail, a blowing head mounting frame for mounting the blowing head is slidably arranged on the guide rail, and the blowing head mounting frame and the sand shooting barrel mounting frame are arranged in parallel; the die mounting mechanism comprises a fixed die mounting seat, a movable die mounting seat, a connecting column and a guide column; the blowing head mounting frame is connected with the sand shooting barrel mounting frame through a quick clamp, and a blowing head driving cylinder for driving the blowing head mounting frame to slide along the guide rail is arranged on the frame;
b. a curing gas input pipe for conveying gas required by sand core molding is arranged at one end of the guide column opposite to the mounting end of the movable mould mounting seat in a communicating manner, an exhaust gas discharge pipe is arranged at one end of the connecting column opposite to the mounting end of the fixed mould mounting seat in a communicating manner, and triethylamine gas is introduced into the blowing head and the curing gas input pipe;
c. adding premixed core sand into the hopper of a frame, connecting the sand shooting barrel mounting frame and the blowing head mounting frame into a whole by utilizing a quick clamp, starting a blowing head driving cylinder, enabling the whole formed by the sand shooting barrel mounting frame and the blowing head mounting frame to slide along the guide rail under the driving of the blowing head driving cylinder until the sand shooting barrel moves to the position right below the hopper, at the moment, enabling the blowing head to be positioned right above a die assembly after die assembly, opening the hopper, and adding the core sand in the hopper into the sand shooting barrel;
d. opening the mold opening and closing cylinder, and guiding the movable mold to perform mold closing operation with the fixed mold by the guide post under the drive of the mold opening and closing cylinder until the mold closing of the movable mold and the fixed mold is completed;
e. when core sand in the sand shooting barrel is filled up, the blowing head driving cylinder drives the whole body connected by the sand shooting barrel mounting frame and the blowing head mounting frame to slide along the guide rail in a direction far away from the hopper until the sand shooting barrel moves to the position right above the die assembly after die assembly is assembled, the sand shooting barrel is pressed downwards by the pressing cylinder, and sand shooting operation is performed when a sand outlet of the sand shooting barrel is pressed onto the die assembly after die assembly is assembled;
f. after sand shooting operation is completed, lifting a compression cylinder, lifting the sand shooting barrel, driving the whole connected by the sand shooting barrel mounting frame and the blowing head mounting frame to slide along the guide rail in the direction close to the hopper by the blowing head driving cylinder until the blowing head moves to the position right above the die assembly after die assembly is assembled, utilizing the compression cylinder to downwards compress the blowing head, and opening the blowing head and the curing gas input pipe to blow and cure core sand in the die assembly when the blowing head is compressed on the die after die assembly; the sand shooting barrel is positioned under the hopper when the air blowing is solidified, and the hopper carries out sand feeding operation on the sand shooting barrel;
g. after the core sand is blown and solidified into a sand core, the mold opening and closing cylinder is opened to drive the movable mold, so that the movable mold and the fixed mold are subjected to mold opening operation under the guidance of the guide post, and after the mold is opened, the movable mold is turned over to the side where an operator is located, and the sand core is taken out;
h. and c, repeating the operations of the steps c-g until the required sand cores are all completed, opening the quick clamp to quickly separate the sand shooting barrel mounting frame from the blowing head mounting frame after the required sand cores are all completed, moving the sand shooting barrel to the upper part of the residual sand recovery tank, and discharging residual sand in the sand shooting barrel to the residual sand recovery tank.
In the step a, a movable die overturning device for driving the movable die to overturn and a top core rod for ejecting the molded sand core are arranged on the movable die mounting seat;
in the step g, the movable mould is turned to one side where an operator is located through the movable mould turning device, the top core rod is utilized to loosen the top of the sand core, and the sand core is taken out by the operator after the top of the sand core is loosened.
According to the invention, the sand shooting barrel mounting frame and the blowing head mounting frame are connected into a whole by utilizing the quick clamp, the connecting column and the guide column are both hollow columns with two open ends, the hollow connecting column and the fixed die mounting seat are connected together in a leakage-free manner by utilizing various corrosion-resistant sealing devices, and the hollow guide column and the movable die mounting seat are connected together in a leakage-free manner. After sand is ejected from the sand ejecting barrel in the cavity of the die assembly, the sand ejecting barrel is switched to be compressed onto the die assembly by the blowing head, then according to the blowing forming process, the core sand can be blown to the left from the hollow guide post on the right side of the die assembly for solidification, and can be blown to the lower side of the die assembly and the left side of the die assembly respectively from the upper side and the right side of the die assembly for solidification, when the sand is blown to the left side from the right side of the die assembly, the large-area blowing solidification is carried out on the mounting surface of the die assembly, the core sand can be quickly solidified into a sand core by gas, the core sand at the lower part of the cavity is also easily and quickly solidified into the sand core, the consumption of the solidified gas triethylamine is saved by about 50%, the forming time of each die sand core is saved by more than 5 seconds, the production cost is greatly reduced, and the production efficiency is greatly improved.
Drawings
Fig. 1 is a schematic structural view of a vertical core shooter of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a schematic structural view of the mold mounting mechanism.
Fig. 4 is a side view of fig. 3.
Fig. 5 is a schematic structural view of the movable mold turning device.
In the figure: 1. a frame; 1-1, an upper supporting frame; 2. a hopper; 3. a guide rail; 4. a sand shooting barrel; 4-1, a sand shooting barrel mounting frame; 5. a blow head; 5-1, a blowing head mounting frame; 6. a compacting cylinder; 6-1, a gas storage bag; 7. a residual sand recovery tank; 8. a compression spring; 9. a quick clamp; 10-1, a fixed die; 10-2, a movable mould; 10-3, a cavity; 11-1, a fixed die mounting seat; 11-2, a movable die mounting seat; 11-3, connecting columns; 11-4, a guide post; 11-5, a guide sleeve; 12. a lower support rail; 13. a mold opening and closing cylinder; 14-1, a movable die bracket; 14-2, turning over the rotating shaft; 14-3, overturning the cylinder; 15. an exhaust gas discharge pipe; 16. a curing gas inlet pipe; 17. a fixed die adjusting mechanism; 18. and an airflow through hole.
Detailed Description
Example 1: vertical core shooter and a die mounting mechanism for the same.
Fig. 3 and 4 illustrate a die mounting mechanism for mounting a die assembly for use in the vertical core shooter of fig. 1 of the present invention, and the die mounting mechanism may be used in other vertical core shooters as well.
As shown in fig. 1 and 2, the vertical core shooter of the present invention includes a frame 1, a hopper 2, a guide rail 3, a sand shooting pot 4, a blow head 5, a compacting cylinder 6, a mold assembly, a mold mounting mechanism, and a residual sand recovery tank 7. The compaction cylinder 6, the guide rail 3, the sand shooting barrel 4 and the die assembly are sequentially arranged from top to bottom; hopper 2 and compress tightly the top of cylinder 6 all fixed setting in frame 1, guide rail 3 level setting is in frame 1, and guide rail 3 is located the below that compresses tightly cylinder 6, and hopper 2 sets up in the upper left side of frame 1, sets up with the butterfly valve in the bottom of hopper 2, and the butterfly valve is opened the back, and core sand in hopper 2 can be added to penetrate sand bucket 4. In the embodiment, an upper support frame 1-1 is arranged at the top of a frame 1, a hopper 2 and a compression cylinder 6 are fixedly arranged on the upper support frame 1-1, and a gas storage bag 6-1 for providing a gas source for the compression cylinder 6 is arranged on the upper support frame 1-1. The hopper 2 is arranged on the left side of the upper supporting frame 1-1, the air storage bag 6-1 is arranged on the right side of the upper supporting frame 1-1, and the guide rail 3 is positioned below the upper supporting frame 1-1. The sand shooting barrel installation frame 4-1 for installing the sand shooting barrel 4 is arranged on the guide rail 3 in a sliding mode, the blowing head installation frame 5-1 for installing the blowing head 5 is arranged on the guide rail 3 in a sliding mode, the blowing head installation frame 5-1 and the sand shooting barrel installation frame 4-1 are arranged in parallel, and rollers for sliding in a matched mode with the guide rail 3 are arranged at the top of the blowing head installation frame 5-1 and the top of the sand shooting barrel installation frame 4-1. The upper part of the sand shooting barrel 4 is fixedly connected with a sand shooting barrel mounting frame 4-1 through a compression spring 8; the blowing head 5 is fixedly connected with the blowing head mounting frame 5-1 through a compression spring 8. In this way, the sand shooting barrel 4 and the blowing head 5 can move along the guide rail 3 along the corresponding mounting frame in the horizontal direction, and can also move vertically downwards under the action of the compression cylinder 6. The sand shooting barrel mounting frame 4-1 and the blowing head mounting frame 5-1 are sequentially arranged from left to right, namely the left-right arrangement sequence of the sand shooting barrel mounting frame 4-1 and the blowing head mounting frame 5-1 is consistent with the left-right arrangement sequence of the hopper 2 and the gas storage bag 6-1. The blowing head mounting frame 5-1 is connected with the sand shooting barrel mounting frame 4-1 through a quick clamp 9, the sand shooting barrel 4 is located under the hopper 2 when the blowing head 5 moves to be right above a die assembly after die assembly, a blowing head driving cylinder for driving the blowing head mounting frame 5-1 to slide along the guide rail 3 is arranged on the frame 1, the blowing head driving cylinder is arranged in the middle of the horizontal direction of the frame 1, the blowing head driving cylinder is a swing arm cylinder, in the embodiment, a slide way for accommodating vertical movement of the swing arm free end of the blowing head driving cylinder is arranged on the blowing head 5, the slide way is vertically arranged, and thus when the swing arm free end of the blowing head driving cylinder moves vertically relative to the slide way, the swing arm of the blowing head driving cylinder pushes the blowing head 5 to move horizontally along the guide rail 3 in the horizontal direction. The structure that the blowing head driving cylinder adopts the swing arm cylinder can make the whole structure of the core shooter more compact, make the operation of the core shooter more steady, realized the quick separation and the quick combination of sand shooting barrel 4 and blowing head 5, after opening quick clamp 9, the sand shooting barrel 4 can independently remove the surplus sand recovery tank top. The residual sand recovery groove 7 is arranged in the middle of the frame 1 along the vertical direction, the residual sand recovery groove 7 is arranged on the installation side of the hopper 2 of the frame 1, the top end of the residual sand recovery groove 7 is lower than the bottom end of the fixed die 10-1, namely, the plane where the top end of the residual sand recovery groove 7 is located is lower than the plane where the bottom end of the fixed die 10-1 is located. In the present embodiment, the sand recovery groove 7 is horizontally provided, and its axial direction is parallel to the axial direction of the guide rail 3. The residual sand recovery tank 7 is positioned at the left lower part of the hopper 2, namely one end of the residual sand recovery tank 7 is fixedly connected with the mounting side of the hopper 2 of the frame 1, and the other end extends out of the frame 1. After the sand shooting barrel 4 moves outside the machine, an operator can quickly open the sand shooting barrel 4 to discharge residual sand, and the residual sand in the sand shooting barrel 4 is quickly removed through the residual sand recovery groove 7. The fence is arranged around the vertical core shooter, the safety grating is arranged at the outer edge of the vertical core shooter, the fence encloses a closed area surrounding the vertical core shooter, and the two adjacent fences are connected in a rotating way, so that the two ends of each fence can be completely opened in a rotating way, and the fence is provided with the electromagnetic lock safety door, thereby not only facilitating the assembly, disassembly and maintenance of equipment, but also increasing the safety of the equipment.
As shown in fig. 3 and 4, the mold assembly includes a stationary mold 10-1 and a movable mold 10-2, the stationary mold 10-1 being disposed opposite the movable mold 10-2. The movable die 10-2 and the fixed die 10-1 are assembled to form a cavity 10-3 for molding core sand, namely, the working surface of the fixed die 10-1 and the working surface of the movable die 10-2 are combined to form the cavity 10-3 for molding core sand.
As shown in fig. 3 to 5, the mold mounting mechanism includes a fixed mold mount 11-1, a movable mold mount 11-2, a connecting column 11-3, and a guide column 11-4. In the present embodiment, the left-right arrangement order of the fixed mold 10-1 and the movable mold 10-2 and the left-right arrangement order of the sand shooting barrel mounting frame 4-1 and the blowhead mounting frame 5-1 are identical, that is, the fixed mold 10-1 is located at the left side of the movable mold 10-2. A lower support guide rail 12 for supporting the die assembly to move along the horizontal direction is arranged at the lower part of the frame 1, a fixed die mounting seat 11-1 is used for supporting a fixed die 10-1, the fixed die mounting seat 11-1 is fixedly arranged on the frame 1, and the fixed die 10-1 is attached to the fixed die mounting seat 11-1. The movable die mounting seat 11-2 is used for supporting the movable die 10-2, and the movable die 10-2 is attached to the movable die mounting seat 11-2. The frame 1 is provided with a mold opening and closing cylinder 13 for driving the movable mold 10-2 to move along the mold opening and closing direction, the mold opening and closing cylinder 13 is arranged on the right side of the frame 1, and the movable mold mounting seat 11-2 is driven by the guide post 11-4 to move in the horizontal direction. In the present embodiment, a bottom wheel for cooperation with the lower support rail 12 is provided at the bottom of the stationary mold mount 11-1. The movable die overturning device for driving the movable die 10-2 to overturn is arranged on the frame 1, namely, the movable die overturning device for driving the movable die 10-2 to overturn is arranged on the installation side of the movable die opening and closing cylinder 13 of the frame 1, the overturning angle of the movable die 10-2 ranges from 0 degrees to 70 degrees, the movable die overturning device comprises a movable die support 14-1, an overturning rotating shaft 14-2 and an overturning cylinder 14-3, a bottom wheel matched with the lower support guide rail 12 is arranged at the bottom of the movable die support 14-1, the movable die support 14-1 is in rotary connection with the movable die installation seat 11-2 through the overturning rotating shaft 14-2, the overturning rotating shaft 14-2 is arranged on the front side of the movable die support 14-1, the overturning cylinder 14-3 is arranged on the rear side of the movable die support 14-1, namely, the overturning rotating shaft 14-2 and the overturning cylinder 14-3 are arranged on two sides of the movable die opening and closing cylinder 13, the overturning rotating shaft 14-2 is vertically arranged, and the axial direction of the overturning cylinder 14-3 is parallel to the axial direction of the movable die opening and closing cylinder 13. The overturning cylinder 14-3 is fixedly arranged at the corresponding side of the frame 1, a piston rod of the overturning cylinder 14-3 is connected with the movable die mounting seat 11-2, and in the embodiment, the piston rod of the overturning cylinder 14-3 is fixedly connected with a movable die supporting bottom plate of the movable die mounting seat 11-2. The overturning cylinder 14-3 adopts a straight cylinder, and further, the overturning cylinder 14-3 adopts a single-acting cylinder. A top core rod for ejecting the formed sand core is arranged on the movable mould mounting seat 11-2.
The fixed die mounting seat 11-1 and the movable die mounting seat 11-2 are both in cuboid shapes, namely the fixed die mounting seat 11-1 and the movable die mounting seat 11-2 are both in cuboid box-shaped structures. In the present embodiment, the fixed mold mount 11-1 includes a fixed mold mounting plate for mounting the fixed mold 10-1, a fixed mold supporting frame for supporting the fixed mold mounting plate, and a fixed mold supporting base plate disposed opposite to the fixed mold mounting plate, the fixed mold mount 11-1 is a rectangular box-like structure having a cavity formed by surrounding the fixed mold mounting plate, the fixed mold supporting frame, and the fixed mold supporting base plate, the movable mold mount 11-2 includes a movable mold mounting plate for mounting the movable mold 10-2, a movable mold supporting frame for supporting the movable mold mounting plate, and a movable mold supporting base plate disposed opposite to the movable mold mounting plate, and the movable mold mount 11-2 is a rectangular box-like structure having a cavity formed by surrounding the movable mold mounting plate, the movable mold supporting frame, and the movable mold supporting base plate. Cavities are formed in the fixed die mounting seat 11-1 and the movable die mounting seat 11-2, the connecting column 11-3 and the guide column 11-4 are hollow columns with two open ends, and the guide column 11-4 is arranged on the frame 1 in a sliding manner. One end of the connecting column 11-3 is communicated with the cavity in the fixed die mounting seat 11-1, and the other end of the connecting column is communicated with an exhaust gas discharge pipe 15, namely, one end of the connecting column 11-3 opposite to the mounting end of the fixed die mounting seat 11-1 is communicated with the exhaust gas discharge pipe 15. One end of the guide column 11-4 is communicated with the cavity in the movable mould mounting seat 11-2, the other end of the guide column is communicated with a curing gas input pipe 16, namely, one end of the guide column 11-4 opposite to the mounting end of the movable mould mounting seat 11-2 is communicated with a curing gas input pipe 16 for conveying gas required by sand core forming, and the gas input in the curing gas input pipe 16 is triethylamine gas. The joint of the connecting column 11-3 and the fixed die mounting seat 11-1 adopts a sealing connection mode, namely, a sealing element is arranged at the joint of the connecting column 11-3 and the fixed die mounting seat 11-1; the joint of the guide post 11-4 and the movable die mounting seat 11-2 adopts a sealing connection mode, namely, the joint of the guide post 11-4 and the movable die mounting seat 11-2 is provided with a sealing element. A guide sleeve 11-5 for accommodating the left and right sliding of the guide post 11-4 is fixedly arranged on the frame 1. A plurality of air flow through holes 18 are horizontally arranged on the fixed die 10-1 and the movable die 10-2, and the axial direction of the air flow through holes 18 is parallel to the axial direction of the guide posts 11-4. One end of an air flow through hole 18 arranged on the fixed die 10-1 is communicated with the cavity 10-3, and the other end is communicated with the cavity in the fixed die mounting seat 11-1. One end of an air flow through hole 18 provided in the movable die 10-2 communicates with the cavity 10-3, and the other end communicates with the cavity in the movable die mount 11-2. An electric heating component for heating and curing the core sand in the cavity 10-3 is arranged on the movable die mounting seat 11-2 and the fixed die mounting seat 11-1, so that the core sand blown into the cavity 10-3 can be cured through not only a die mounting mechanism but also electric heating. The mould mounting mechanism can be used as an intermediate connecting piece for connecting the mould assembly with the frame 1 and can also be used as a horizontal blowing device, namely, blowing and curing the sand core in the mould cavity 10-3 in the horizontal direction. The vertical core shooter adopts the die mounting structure of the invention, and in combination with the arrangement of the blowing head 5, the core sand in the cavity 10-3 can be selectively blown and solidified from the upper side or from the upper side and the right side at the same time. The vertical sand shooting and horizontal air blowing can be realized, the air blowing area is increased by adopting the air blowing mode, the air blowing resistance is reduced by adopting the large-area air blowing mode, the tail gas after air blowing and solidification can be directly discharged into tail gas treatment equipment through the hollow connecting column 11-3, and compared with the traditional vertical air blowing structure, the vertical air blowing structure has the advantages that more than half of the amine consumption is saved, and the vertical air blowing structure is extremely suitable for popularization and use in the manufacturing of the vertical parting sand cores. A fixed die adjusting mechanism 17 for adjusting the horizontal position of the fixed die 10-1 is arranged on the fixed die mounting seat 11-1, and a rocker is arranged on the fixed die adjusting mechanism 17. The end of the fixed mold adjusting mechanism 17 opposite to the mounting end of the swing handle is connected with the fixed mold mounting seat 11-1. In this embodiment, the end of the fixed mold adjusting mechanism 17 opposite to the mounting end of the swing handle is connected with the fixed mold mounting plate of the fixed mold mounting seat 11-1, an operator can quickly realize movement adjustment (100 mm) of the fixed mold 10-1 by shaking the swing handle of the fixed mold adjusting mechanism 17, that is, the fixed mold adjusting mechanism 17 is used for horizontally and leftwards or rightwards moving adjustment of the fixed mold 10-1, the maximum moving distance of the fixed mold 10-1 under the adjustment of the fixed mold adjusting mechanism 17 is 100mm, and the setting of the fixed mold adjusting mechanism 17 can adapt to the mounting requirements of the fixed mold 10-1 with different thicknesses. In this embodiment, the vertical core shooter further includes an electrical control system, and the electrical control system controls the opening and closing of the hopper 2, the sand shooting barrel 4, the blowing head 5, the quick clamp 9 and the ejection of the top core rod.
Example 2: a method for manufacturing a cold core.
As shown in fig. 1 to 5, a method for manufacturing a core by using a cold core includes the following steps:
a. preparing a vertical core shooter as shown in embodiment 1, the vertical core shooter comprises a frame 1, a hopper 2, a guide rail 3, a sand shooting barrel 4, a blowing head 5, a compacting cylinder 6, a die assembly, a die mounting mechanism and a residual sand recycling groove 7, wherein the die assembly comprises a fixed die 10-1 and a movable die 10-2, a sand shooting barrel mounting frame 4-1 for mounting the sand shooting barrel 4 is slidably arranged on the guide rail 3, a blowing head mounting frame 5-1 for mounting the blowing head 5 is slidably arranged on the guide rail 3, and the blowing head mounting frame 5-1 is arranged in parallel with the sand shooting barrel mounting frame 4-1. The die mounting mechanism comprises a fixed die mounting seat 11-1, a movable die mounting seat 11-2, a connecting column 11-3 and a guide column 11-4. The blowing head mounting frame 5-1 is connected with the sand shooting barrel mounting frame 4-1 through a quick clamp 9, and a blowing head driving cylinder for driving the blowing head mounting frame 5-1 to slide along the guide rail 3 is arranged on the frame 1 and is a swing arm cylinder. A movable die overturning device for driving the movable die 10-2 to overturn and a top core rod for ejecting the formed sand core are arranged on the movable die mounting seat 11-2.
b. A solidifying gas input pipe 16 for conveying gas required by sand core forming is arranged at one end of the guide column 11-4 opposite to the mounting end of the movable mould mounting seat 11-2 in a communicating way, an exhaust gas discharge pipe 15 is arranged at one end of the connecting column 11-3 opposite to the mounting end of the fixed mould mounting seat 11-1 in a communicating way, and triethylamine gas is introduced into the blowing head 5 and the solidifying gas input pipe 16.
c. The premixed core sand is added into a hopper 2 of a frame 1, a sand shooting barrel mounting frame 4-1 and a blowing head mounting frame 5-1 are connected into a whole by utilizing a quick clamp 9, a blowing head driving cylinder is started, the whole formed by the sand shooting barrel mounting frame 4-1 and the blowing head mounting frame 5-1 slides along a guide rail 3 towards the direction close to the hopper 2 under the driving of the blowing head driving cylinder, namely, the whole formed by the sand shooting barrel mounting frame 4-1 and the blowing head mounting frame 5-1 slides leftwards along the guide rail 3 under the driving of the blowing head driving cylinder until the sand shooting barrel 4 moves to the position right below the hopper 2, at the moment, the blowing head 5 is positioned right above a die assembly after die assembly, the hopper 2 is opened, and the core sand in the hopper 2 is added into the sand shooting barrel 4.
d. The mold opening and closing cylinder 13 is opened, and the movable mold 10-2 is guided by the guide post 11-4 to perform mold closing operation with the fixed mold 10-1 under the drive of the mold opening and closing cylinder 13 until the mold closing of the movable mold 10-2 and the fixed mold 10-1 is completed.
e. After core sand in the sand shooting barrel 4 is filled, the whole connected by the sand shooting barrel mounting frame 4-1 and the sand blowing head mounting frame 5-1 is driven by the air blowing head driving cylinder to slide along the guide rail 3 in a direction away from the hopper 2, namely, the whole connected by the sand shooting barrel mounting frame 4-1 and the sand blowing head mounting frame 5-1 is driven by the air blowing head driving cylinder to slide rightwards along the guide rail 3 until the sand shooting barrel 4 moves to the position right above a die assembly after die assembly is assembled, the sand shooting barrel 4 is pressed downwards by the pressing cylinder 6, and sand shooting operation is performed when a sand outlet of the sand shooting barrel 4 is pressed onto the die assembly after die assembly is assembled.
f. After sand shooting operation is completed, lifting a compression cylinder 6, lifting the sand shooting barrel 4 under the action of a compression spring 8, driving a whole connected by a sand shooting barrel mounting frame 4-1 and a blowing head mounting frame 5-1 to slide along a guide rail 3 in a direction close to a hopper 2 by a blowing head driving cylinder, namely driving the whole connected by the sand shooting barrel mounting frame 4-1 and the blowing head mounting frame 5-1 to slide leftwards along the guide rail 3 until the blowing head 5 moves to a position right above a die assembly after die assembly is closed, pressing the blowing head 5 downwards by the compression cylinder 6, and opening the blowing head 5 and a curing gas input pipe 16 to blow and cure core sand in the die assembly when the blowing head 5 is compressed on the die after die assembly; the sand shooting barrel 4 is positioned under the hopper 2 while the air blowing solidification is carried out, and the hopper 2 carries out sand feeding operation on the sand shooting barrel 4, and at this time, the sand shooting operation of the sand shooting barrel 4 is carried out simultaneously with the air blowing solidification operation of core sand.
g. After the core sand is blown and solidified into a sand core, the mold opening and closing cylinder 13 is opened to drive the movable mold 10-2, so that the movable mold 10-2 and the fixed mold 10-1 are opened under the guide of the guide post 11-4, and after the mold is opened, the movable mold is turned over to the side where an operator is located, and the sand core is taken out. In this embodiment, the movable mold 10-2 is turned over to the side where the operator is located by the movable mold turning device, that is, the movable mold 10-2 is turned over to the front side by the movable mold turning device, the top core rod is used to loosen the top of the sand core, and the sand core is taken out by the operator after the top of the sand core is loosened. The movable die overturning device enables the die to be assembled and disassembled and the sand core to be taken out conveniently and quickly. The setting of top core bar makes the taking out of psammitolite more convenient.
h. And c, repeating the operations of the steps c-g until the required sand cores are all completed, opening the quick clamp 9 to quickly separate the sand shooting barrel mounting frame 4-1 from the blowing head mounting frame 5-1 after the required sand cores are all completed, moving the sand shooting barrel 4 to the position above the residual sand recovery tank 7, and discharging residual sand in the residual sand recovery tank 7.
Claims (8)
1. The vertical core shooter is characterized by comprising a frame, a hopper, a guide rail, a sand shooting barrel, a blowing head, a compression cylinder, a die assembly, a die mounting mechanism and a residual sand recycling groove;
the compaction cylinder, the guide rail, the sand shooting barrel and the die assembly are sequentially arranged from top to bottom; the hopper and the compression cylinder are fixedly arranged at the top of the frame, the guide rail is horizontally arranged on the frame, and the guide rail is positioned below the compression cylinder; a sand shooting barrel mounting frame for mounting the sand shooting barrel is arranged on the guide rail in a sliding manner;
the die assembly comprises a fixed die and a movable die, and a cavity for molding core sand is formed after the movable die and the fixed die are clamped; the frame is provided with a mold opening and closing cylinder for driving the movable mold to move along the mold opening and closing direction;
the die mounting mechanism comprises a fixed die mounting seat, a movable die mounting seat, a connecting column and a guide column; the fixed die mounting seat and the movable die mounting seat are both cuboid, cavities are formed in the fixed die mounting seat and the movable die mounting seat, the connecting column and the guide column are hollow columns with two open ends, and the guide column is arranged on the frame in a sliding manner; one end of the connecting column is communicated with the cavity in the fixed die mounting seat; one end of the guide post is communicated with the cavity in the movable die mounting seat; a plurality of airflow through holes are horizontally arranged on the fixed die and the movable die; one end of the airflow through hole arranged on the fixed die mould is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the fixed die mounting seat; one end of the airflow through hole arranged on the movable die is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the movable die mounting seat;
the guide rail is provided with a blowing head mounting frame for mounting the blowing head in a sliding manner, the blowing head mounting frame is arranged in parallel with the sand shooting barrel mounting frame, the blowing head mounting frame is connected with the sand shooting barrel mounting frame through a quick clamp, the sand shooting barrel is positioned under the hopper when the blowing head moves to be right above a die assembly after die assembly, and the frame is provided with a blowing head driving cylinder for driving the blowing head mounting frame to slide along the guide rail;
an electric heating component for heating and solidifying the core sand in the cavity is arranged on the movable die mounting seat and the fixed die mounting seat;
and one end of the connecting column, which is opposite to the mounting end of the fixed die mounting seat, is communicated with an exhaust gas discharge pipe, and one end of the guide column, which is opposite to the mounting end of the movable die mounting seat, is communicated with a curing gas input pipe for conveying gas required by sand core molding.
2. A vertical core shooter according to claim 1, wherein the blowhead driving cylinder is a swing arm cylinder.
3. A vertical core shooter according to claim 1, wherein a movable die turning device for driving the movable die to turn is provided on the frame.
4. The vertical core shooter of claim 1, wherein the residual sand recovery groove is provided in a middle part of the frame in a vertical direction, the residual sand recovery groove is mounted on a hopper mounting side of the frame, and a top end of the residual sand recovery groove is lower than a bottom end of the fixed mold.
5. A die mounting mechanism for a vertical core shooter of claim 1, comprising a stationary die mount, a movable die mount, a connecting post, and a guide post; the fixed die mounting seat and the movable die mounting seat are both in cuboid shapes, cavities are formed in the fixed die mounting seat and the movable die mounting seat, the connecting column and the guide column are hollow columns with two open ends, and the guide column is arranged on the frame in a sliding manner; one end of the connecting column is communicated with the cavity in the fixed die mounting seat; one end of the guide post is communicated with the cavity in the movable die mounting seat; a plurality of airflow through holes are horizontally arranged on the fixed die and the movable die; one end of the airflow through hole arranged on the fixed die mould is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the fixed die mounting seat; one end of the airflow through hole arranged on the movable die is communicated with the cavity, and the other end of the airflow through hole is communicated with the cavity in the movable die mounting seat.
6. The mold mounting mechanism for a vertical core shooter according to claim 5, wherein an exhaust gas discharge pipe is provided in communication with an end of the connecting column opposite to the mounting end of the fixed mold mount, and a curing gas input pipe for conveying gas required for sand core molding is provided in communication with an end of the guide column opposite to the mounting end of the movable mold mount.
7. A method for making a cold core, comprising the steps of:
a. preparing the vertical core shooter according to any one of claims 1-3, wherein the vertical core shooter comprises a frame, a hopper, a guide rail, a sand shooting barrel, a blowing head, a compression cylinder, a mold assembly, a mold mounting mechanism and a residual sand recycling groove, the mold assembly comprises a fixed mold and a movable mold, a sand shooting barrel mounting rack for mounting the sand shooting barrel is slidably arranged on the guide rail, a blowing head mounting rack for mounting the blowing head is slidably arranged on the guide rail, and the blowing head mounting rack is arranged in parallel with the sand shooting barrel mounting rack; the die mounting mechanism comprises a fixed die mounting seat, a movable die mounting seat, a connecting column and a guide column; the blowing head mounting frame is connected with the sand shooting barrel mounting frame through a quick clamp, and a blowing head driving cylinder for driving the blowing head mounting frame to slide along the guide rail is arranged on the frame;
b. a curing gas input pipe for conveying gas required by sand core molding is arranged at one end of the guide column opposite to the mounting end of the movable mould mounting seat in a communicating manner, an exhaust gas discharge pipe is arranged at one end of the connecting column opposite to the mounting end of the fixed mould mounting seat in a communicating manner, and triethylamine gas is introduced into the blowing head and the curing gas input pipe;
c. adding premixed core sand into the hopper of a frame, connecting the sand shooting barrel mounting frame and the blowing head mounting frame into a whole by utilizing a quick clamp, starting a blowing head driving cylinder, enabling the whole formed by the sand shooting barrel mounting frame and the blowing head mounting frame to slide along the guide rail under the driving of the blowing head driving cylinder until the sand shooting barrel moves to the position right below the hopper, at the moment, enabling the blowing head to be positioned right above a die assembly after die assembly, opening the hopper, and adding the core sand in the hopper into the sand shooting barrel;
d. opening the mold opening and closing cylinder, and guiding the movable mold to perform mold closing operation with the fixed mold by the guide post under the drive of the mold opening and closing cylinder until the mold closing of the movable mold and the fixed mold is completed;
e. when core sand in the sand shooting barrel is filled up, the blowing head driving cylinder drives the whole body connected by the sand shooting barrel mounting frame and the blowing head mounting frame to slide along the guide rail in a direction far away from the hopper until the sand shooting barrel moves to the position right above the die assembly after die assembly is assembled, the sand shooting barrel is pressed downwards by the pressing cylinder, and sand shooting operation is performed when a sand outlet of the sand shooting barrel is pressed onto the die assembly after die assembly is assembled;
f. after sand shooting operation is completed, lifting a compression cylinder, lifting the sand shooting barrel, driving the whole connected by the sand shooting barrel mounting frame and the blowing head mounting frame to slide along the guide rail in the direction close to the hopper by the blowing head driving cylinder until the blowing head moves to the position right above the die assembly after die assembly is assembled, utilizing the compression cylinder to downwards compress the blowing head, and opening the blowing head and the curing gas input pipe to blow and cure core sand in the die assembly when the blowing head is compressed on the die after die assembly; the sand shooting barrel is positioned under the hopper when the air blowing is solidified, and the hopper carries out sand feeding operation on the sand shooting barrel;
g. after the core sand is blown and solidified into a sand core, the mold opening and closing cylinder is opened to drive the movable mold, so that the movable mold and the fixed mold are subjected to mold opening operation under the guidance of the guide post, and after the mold is opened, the movable mold is turned over to the side where an operator is located, and the sand core is taken out;
h. and c, repeating the operations of the steps c-g until the required sand cores are all completed, opening the quick clamp to quickly separate the sand shooting barrel mounting frame from the blowing head mounting frame after the required sand cores are all completed, moving the sand shooting barrel to the upper part of the residual sand recovery tank, and discharging residual sand in the sand shooting barrel to the residual sand recovery tank.
8. The method according to claim 7, wherein in the step a, a moving die turning device for driving the moving die to turn over and a core ejection rod for ejecting the molded sand core are provided on the moving die mounting base;
in the step g, the movable die is turned to one side where an operator is located through the movable die turning device, the top core rod is utilized to loosen the top of the sand core, and the sand core is taken out by the operator after the top of the sand core is loosened.
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| CN201811351210.XA CN109304428B (en) | 2018-11-14 | 2018-11-14 | Vertical core shooter, die mounting mechanism for vertical core shooter and cold core making method |
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| CN109807290B (en) * | 2019-03-22 | 2020-10-16 | 苏州三信机器制造有限公司 | Cold core machine |
| CN110202099A (en) * | 2019-07-09 | 2019-09-06 | 繁昌县速诚智能设备科技有限公司 | A kind of vertical-parting cold core and film-covering sand hot corebox produce special purpose machine tool automatically |
| CN111633185A (en) * | 2020-06-03 | 2020-09-08 | 湖南汉寿玉贤耐磨材料有限公司 | Guide device for sand shooting |
| CN115770858B (en) * | 2022-11-22 | 2023-11-03 | 无锡中叶合金制品有限公司 | CT belt pulley casting sand filling device |
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