CN212371121U - Sand-lined molding machine device with four templates - Google Patents

Abstract

The utility model relates to a sand-lined molding machine device with four templates, which belongs to the machinery category. The utility model discloses sand-lined molding machine device is including penetrating sand-lined mechanism, compound die drawing mechanism, template shuttle mechanism, penetrate sand head shuttle mechanism, the swage rollgang, the upper beam, the stand, the sand fill, gas bag and base, the upper beam passes through the stand and is connected with the base, the sand fill, the gas bag sets up on the upper beam, the swage rollgang is installed on the stand, penetrate sand-lined mechanism and fix on the upper beam, penetrate sand head shuttle mechanism and penetrate sand-lined mechanism and match, every penetrates sand head shuttle mechanism and goes up to set up two sand heads that can shuttle removal, two lift cylinders that compound die drawing mechanism fixed on the base, template shuttle mechanism fixed mounting is on the base. The utility model has the advantages of simple and reasonable design, safe and reliable installs and removes the maintenance convenience, and occupation of land space is little, reduces production line input cost, satisfies the user demand.

Description

Sand-lined molding machine device with four templates

Technical Field

The utility model relates to a device especially relates to a sand lined molding machine device of four templates, and it belongs to machinery class field.

Background

The sand-coated iron mould casting belongs to special casting, and its casting mould is formed by coating a thin layer of coated sand on the inner cavity of metal mould. The sand-lined metal mold casting has the characteristics of energy conservation, material saving, high efficiency, high quality, green production and the like, and has wider and wider application fields. The sand lined molding of the iron mold is generally completed by a sand lined molding machine in a cavity of the iron mold sand lined mold.

The general sand-lined molding machine comprises a single-station sand-lined molding machine, a double-station sand-lined molding machine and the like. The sand lined metal mold casting is generally suitable for the production of large-batch castings, because the investment of the sand lined metal mold casting is large, a product needs to be matched with a considerable number of metal molds to meet the requirements of the production process, more than 15 pairs of metal molds or even dozens of pairs of metal molds are needed for one casting, the capital investment of the metal molds is large, and the small-batch casting products are difficult to bear. Meanwhile, in the production process, because the iron mold sand-lined production adopts the thermosetting precoated sand, the replacement of the mold is difficult to realize in one production, so the castings produced in small batches are generally not suitable for the casting production by adopting the iron mold sand-lined.

In order to achieve the production of small batches of castings, the following conditions must be met: 1. namely, the input quantity of the iron mold is reduced; 2. the replacement of the mold may not be performed during one production run. In the actual production process, the sand lined metal mold production line is arranged, and the sand lined molding work part usually adopts a mode of connecting two double work stations in series to meet the requirements, and by adopting the mode, the number of the sand lined metal mold casting castings can be reduced by half compared with the number required by the prior iron mold, so that the capital investment of the iron mold is greatly saved; meanwhile, the two double-station sand-lined molding machines are connected in series, two casting products can be produced simultaneously during production, and two kinds of castings can be produced simultaneously in one production shift without replacing molds. However, the arrangement mode of the production line and the equipment also has certain disadvantages: 1) the production length is lengthened, and the floor area of the production line is increased; 2) the equipment investment is greatly increased; 3) the operation distance of molding production workers is prolonged, and the labor intensity of the workers is increased.

As shown in fig. 1-2, two sand shooting devices, two molds and an iron mold clamping and stripping mechanism of a common double-station iron mold sand-lined molding machine are used for completing sand-lined molding work of an upper iron mold and a lower iron mold. The investment of the mould for sand-lined metal mould casting production is large, mainly the investment of the metal mould. For a sand lined metal mold production line, the number of sand lined molding machines is increased, the number of investment of metal molds can be reduced, and the sand lined metal mold casting production line is favorable for producing small-batch castings through sand lined metal molds. Therefore, the iron mold sand-lined casting production line adopts two double-station sand-lined molding machines connected in series or a four-station sand-lined molding machine connected in series to achieve the purpose. The arrangement mode needs to occupy a longer length space, so that the length of the production line is increased, meanwhile, the investment of auxiliary equipment of the production line and the investment of modeling equipment are increased, and the automatic control of the production line is more complex.

The publication date is 2014, 08 and 13, and the publication number is CN203764907UU, which discloses a utility model named as a double-station iron mold sand-lined molding device for shuttling and moving sand shooting. This patent includes main body frame, compound die drawing mechanism, swage rollgang, swage positioning mechanism and penetrates sand mechanism, and compound die drawing mechanism fixes on the base, and compound die drawing mechanism is equipped with elevating platform and hydraulic cylinder, and elevating platform fixes on hydraulic cylinder, and hydraulic cylinder fixes on the base, and the swage rollgang is fixed on the stand, and this swage rollgang is located the below of entablature, and swage positioning mechanism fixes on the swage rollgang, penetrates sand mechanism and fixes on the entablature. Although the patent can improve the sand covering quality and the sand covering efficiency, the structure of the sand covering molding machine is simplified; however, the arrangement increases the length of the production line and the input cost of auxiliary equipment of the production line, so that the defects are also existed.

Therefore, the iron mold sand-lined molding device which can meet the simultaneous production of two products, does not increase the length of a production line and has small investment is provided to meet the production requirements of various small-batch castings, and the iron mold sand-lined molding device is particularly necessary.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the above-mentioned not enough that exists among the prior art, and provide a structural design simple reasonable, safe and reliable installs and removes the maintenance convenience, and occupation of land space is little, reduces the sand-lined molding machine device of four templates of production line input cost.

The utility model provides a technical scheme that above-mentioned problem adopted is: this sand-lined molding machine device of four templates, including iron mold rollgang, upper beam, stand, sand fill, gas bag and base, the upper beam passes through the stand to be connected with the base, and sand fill, gas bag set up on the upper beam, and iron mold rollgang installs on the stand its characterized in that: the sand shooting and sand covering device comprises a sand shooting and sand covering mechanism 1, a die closing and stripping mechanism, a template shuttle mechanism and a sand shooting head shuttle mechanism, wherein the sand shooting and sand covering mechanism is fixed on an upper beam, the sand shooting head shuttle mechanism is matched with the sand shooting and sand covering mechanism, the number of the die closing and stripping mechanism, the template shuttle mechanism and the sand shooting head shuttle mechanism is at least two, each sand shooting head shuttle mechanism is provided with two sand shooting heads capable of moving in a shuttling way, and lifting cylinders of the two die closing and stripping mechanisms are fixed on a base; template shuttle mechanism fixed mounting is on the base, this template shuttle mechanism includes the travelling frame dolly, the travelling car jar, the template fixing base, the travelling car track, the track foot, fixed cross beam, fixing base drag hook and dolly drag hook, the travelling frame dolly is installed on the travelling car track, this travelling car track fixed mounting is on the track foot, the track foot is fixed on the base, link to each other through fixed cross beam between the track foot, travelling car jar one end is fixed on the fixed cross beam of track foot, the piston rod of this travelling car jar is connected with the travelling frame dolly, two template fixing base activities are placed on the travelling frame dolly, two little parking stall hooks that prevent the ascending of travelling frame dolly are respectively installed to travelling frame dolly below both sides, be equipped with the fixing base drag hook on the template fixing base.

Preferably, the two sand shooting heads of the utility model are connected by two parallel double-head hinge pull rods; the two sand shooting heads can synchronously move in a shuttling mode along with the movement of the moving cylinder of the sand shooting head shuttling mechanism, and when one sand shooting head finishes the sand shooting process, the sand shooting head can also perform small-stroke (about 4-6 mm) lifting movement.

Preferably, the clearance between the lower plane of the movable frame trolley and the die assembly stripping workbench is 3-5 mm.

Preferably, the gaps between the four sides of the template fixing seat and the four sides of the placement frame of the movable frame trolley are 2-4 mm.

Preferably, the angles of the inclined planes of the four sides of the template fixing seat and the four sides of the placement frame of the movable frame trolley are 8-10 degrees.

Preferably, the travelling car track, the track foot and the fixed beam are connected into a whole.

Preferably, the iron-type rollgang adopts a motorized roller way or a manual pushing roller way.

Preferably, four-template sand-lined molding machine device, its characterized in that: the base, the upright post and the upper beam are connected into a frame structure.

Compared with the prior art, the utility model, have following advantage and effect: 1) the whole structure is simple and reasonable in design, safe and reliable, and the molding machine is simple and convenient to operate and convenient to maintain by workers; 2) the sand-lined metal mold casting production of two varieties of castings is realized by using a sand-lined molding machine on a sand-lined metal mold production line; 3) compared with two tandem double-station or one tandem four-station sand-covering molding machine, the sand-covering molding machine has the advantages of simple structure, short length, small occupied area and small capital investment, and two sand shooting stations and two mold stripping mechanisms are reduced; 4) the molding machine production line is simple in arrangement, matched with other auxiliary machines of the production line, synchronous in iron mold conveying running rhythm and easy to realize automatic control and running of the production line.

Drawings

FIG. 1 is a first schematic diagram of a general-purpose, dual-station, sand-lined molding machine.

FIG. 2 is a second schematic diagram of a general-purpose, dual-station, sand-lined molding machine.

Fig. 3 is a schematic view of a sand lined metal mold molding machine according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a sand lined metal mold molding machine according to an embodiment of the present invention.

Fig. 5 is a schematic view of the sand shooting structure and a schematic view of the working state of the embodiment of the present invention.

Fig. 6 is a schematic view of the sand shooting structure and the working state in the embodiment of the present invention.

Fig. 7 is a first schematic structural diagram of a template shuttle mechanism according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a template shuttle mechanism according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of a sand-lined molding station where a casting iron mold and a casting template enter in the embodiment of the invention.

Fig. 10 is a schematic diagram of a second sand-lined molding station where casting iron molds and templates enter.

Fig. 11 is a schematic diagram of a sand-lined sand-shooting molding state of a casting iron mold according to the embodiment of the present invention.

Fig. 12 is a schematic diagram of a molding station which is not yet released after the molding of the casting iron mold is completed, and a casting template and a sand shooting head enter the sand-lined molding station.

Fig. 13 is a schematic diagram of a casting iron mold, a template and a shooting head all entering a sand-lined molding station in the embodiment of the invention.

Fig. 14 is a schematic diagram of the sand-lined sand-shooting molding state of the casting iron mold according to the embodiment of the present invention.

Fig. 15 is a schematic view of the state of the casting iron mold stripping completion of the embodiment of the present invention.

Fig. 16 is a partially enlarged schematic view of fig. 8.

In the figure: the sand shooting and covering mechanism comprises a sand shooting and covering mechanism 1, a die assembly stripping mechanism 2, an iron mold conveying roller way 3, an upper beam 4, an upright post 5, a sand hopper 6, an air bag 7, a base 8, a template shuttle mechanism 9, a sand shooting head shuttle mechanism 10, a sand shooting head 11 and a double-head hinge pull rod 12;

template shuttle mechanism 9: the device comprises a movable frame trolley 91, a movable trolley cylinder 92, a template fixing seat 93, a movable trolley track 94, track feet 95, a fixed cross beam 96, a fixing seat draw hook 97 and a trolley draw hook 98;

a first sand shooting head 111, a second sand shooting head 112, a sand shooting head upper surface 113, an upper beam lower plane 41, a distance H, a gap J and an angle D; the casting sand shooting device comprises a casting upper sand shooting head 101, a casting lower sand shooting head 102, a casting upper iron mold 201, a casting upper template 301 and a casting lower template 302.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Examples are given.

Referring to fig. 3 to 16, the sand-lined molding machine device of the four mold plates of the embodiment includes a sand-shooting and sand-lining mechanism 1, a mold-closing and pattern-drawing mechanism 2, an iron-type conveying roller way 3, an upper beam 4, an upright post 5, a sand hopper 6, an air bag 7, a base 8, a mold plate shuttle mechanism 9 and a sand-shooting head shuttle mechanism 10, wherein the upper beam 4 is connected with the base 8 through the upright post 5, the sand hopper 6 and the air bag 7 are arranged on the upper beam 4, the iron-type conveying roller way 3 is arranged on the upright post 5, the sand-shooting and sand-lining mechanism 1 is fixed on the upper beam 4, the sand-shooting head shuttle mechanism 10 is matched with the sand-shooting and pattern-drawing mechanism 1, the number of the mold-closing and pattern-drawing mechanism 2, the mold-punching mechanism 9 and the sand-shooting head shuttle mechanism 10 is two, each sand-shooting head shuttle mechanism 10 is provided with two sand-shooting heads 11 capable of shuttling.

Referring to fig. 3-4, six columns 5 are fixed on a base 8 of the sand-lined molding machine device of the embodiment, the columns 5 are fixed with an upper beam 4, the base 8, the columns 5, the upper beam 4 and the like form a complete frame structure, and other devices are respectively installed on the frame structure. The iron mold conveying roller way 3 for the iron mold to pass in and out of the molding station is fixedly installed on the upright post 5, is used for conveying the iron mold and plays a role in fixing the iron mold during molding and demolding as a part of the iron mold demolding mechanism, and can adopt a motorized roller way or a manual pushing roller way as required.

The lifting cylinders of the two die closing and stripping mechanisms 2 are fixedly arranged on the base 8, and the stripping workbench synchronously performs lifting action along with the lifting of the lifting cylinders. The sand shooting and sand covering mechanism 1 is completely the same as the sand shooting head structure, the moving mode and the sand shooting principle of a common sand covering molding machine, and the description is omitted here.

As shown in fig. 5-6, fig. 5 shows the sand shooting head in place; FIG. 6 shows the sand shooting head in position, raised to a sand-lined state; each sand-lined molding station is provided with two sand shooting heads 11 capable of moving in a shuttling mode, namely a sand shooting head I111 and a sand shooting head II 112, and the two sand shooting heads 11 on each molding sand-lined molding station are connected through two parallel double-head hinge pull rods 12, so that the two sand shooting heads can move in a shuttling mode synchronously along with the movement of the sand shooting head shuttling movement cylinders.

When the sand shooting modeling is carried out at the sand shooting station, the sand shooting heads of the sand shooting modeling are carried out, the sand shooting heads on the sand coating modeling station can be pressed along with the die assembly of an iron mold and a template, the effective distance H (about 4-6 mm) of the sand shooting heads rises, the sand shooting heads are separated from the shuttle moving roller way, the upper surfaces 113 of the sand shooting heads are attached to the lower plane 41 of the upper beam, and because the two sand shooting heads 11 are connected by adopting the double-head hinge pull rod 12, when the sand shooting heads on the sand coating modeling station rise, the other sand shooting head connected with the sand shooting heads on the sand shooting station cannot rise along with the sand shooting heads and continuously stays on the sand shooting head shuttle track.

Referring to fig. 7-8 and 16, the form shuttling mechanism 9 includes a moving frame cart 91, a moving cart cylinder 92, a form fixing base 93, a moving cart track 94, a track foot 95, a fixing cross beam 96, a fixing base draw hook 97 and a cart draw hook 98, and the form shuttling mechanism 9 is fixedly mounted on the base 8. The moving frame trolley 91 is arranged on a moving trolley track 94 and can move back and forth on the moving trolley track 94 along with the movement of the piston rod of the moving trolley cylinder 92; the moving trolley track 94 is fixedly arranged on 12 track feet 95, and the track feet 95 are fixedly arranged on the sand-coating molding machine base 8; the rail feet 95 are connected by 6 fixed cross beams 96, the movable trolley rail 94, the rail feet 95, the fixed cross beams 96 and the like form an integral structure, and the rail feet 95 are fixedly connected with the base 8; one end of the moving trolley cylinder 92 is fixedly arranged on a fixed cross beam 96 of the track foot 95, a piston rod of the moving trolley cylinder 92 is fixedly connected with the moving frame trolley 91, and the moving frame trolley 91 can move back and forth in a shuttling mode along with the back and forth expansion of the piston rod of the moving trolley cylinder 92.

Two template fixing seats 93 are arranged on the movable frame trolley 91, and the two template fixing seats 93 are used for fixing templates for placing two casting products; the two template fixing seats 93 are movably arranged in two frames of the movable frame trolley 91, and under the action of the die closing and stripping mechanism 2, the template fixing seats 93 can ascend to be separated from the movable frame trolley 91.

A certain gap J between the four sides of the template fixing seat 93 and the four sides of the mounting frame of the movable frame trolley 91 is 2-4 mm, and the four sides of the template fixing seat 93 and the four sides of the mounting frame of the movable frame trolley 91 are both provided with a certain inclined plane angle D of 8-10 degrees and used for guiding the template fixing seat 93 to descend and return to the corresponding mounting frame of the frame trolley. The upper plane of the template fixing seat 93 is used for installing a model template, when the sand-lined modeling is matched, the template fixing seat 93 provided with the casting template can be separated from the placing frame of the movable frame trolley 91 along with the rising of the matched-die stripping workbench, and when the sand-lined modeling is solidified and stripping is completed, the model template fixing seat can fall back into the corresponding placing frame of the trolley along with the falling of the matched-die stripping cylinder. Two settle frame below each fixed mounting in both sides have two prevent that travelling frame dolly 91 rises to stall the hook h, when the workstation of cover sand station rises drive template fixing base 93, settle frame below fixed mounting's four prevent that the dolly drag hook 98 that rises hooks the travelling frame dolly of below, fix travelling frame dolly 91, prevent that the travelling frame dolly from following to rise, make template fixing base 93 break away from the arrangement frame of travelling frame dolly 91 smoothly, rise along with the workstation rises, thereby accomplish the compound die of model template and swage. When the sand-coated sand shooting molding and solidification are finished and the iron mold and the template mold are entered, the mold closing and stripping workbench descends to drive the iron mold, the template and the like to descend, when the iron mold descends to the position where the iron mold runs and contacts with the roller of the conveying roller way, the iron mold is blocked and does not descend, and the lower plane of the workbench is pulled by the pull-down fixing seat draw hook 97 by the template fixing seat 93 and the template, so that the lower plane of the workbench still descends synchronously, the iron and the model are separated gradually, and the stripping work of the iron mold and the template is finally completed.

Referring to fig. 9-15, the four-pattern sand lined molding machine of the present embodiment operates as follows: the sand-lined molding machine device is provided with two sand-lined molding stations, four template mounting stations and four sand shooting heads, and can be used for simultaneously mounting templates of two castings; when sand-coating modeling is carried out on the iron mold of one casting, the upper iron mold and the lower iron mold of the casting enter a sand-coating modeling station through an iron mold conveying roller way 3, then a casting upper template 301 and a casting lower template 302 to be modeled are moved to the sand-coating modeling station through a template shuttle mechanism 9, meanwhile, the casting upper iron mold 201, a casting upper sand-shooting head 101 and a casting lower sand-shooting head 102 for sand-shooting and sand-coating of the casting lower iron mold are moved to the sand-coating modeling station, a mold closing and lifting cylinder is lifted to drive a mold closing and lifting workbench, a template fixing seat 93 provided with the casting template is driven to lift until the parting surface of the template is contacted with the iron mold lower plane, the iron mold is lifted continuously from the iron conveying roller way, the iron mold is lifted continuously until the iron mold upper plane is contacted with the sand-shooting head lower plane, and the sand-shooting head, the iron mold and the template are completely and tightly attached together under the action of the mold closing and lifting workbench, completing the die assembly work of the iron mold and the template, then performing sand-coating modeling (sand-shooting and sand-coating and solidification) on the iron mold, when the sand-coating layer is completely solidified, driving the die assembly and stripping workbench to descend under the die assembly stripping cylinder, the iron mold, the template and the template fixing seat 93 to descend along with the die assembly stripping cylinder, when the iron mold descends until the running edge of the iron mold touches the roller circle of the iron mold conveying roller bed 3, the iron mold does not descend, the draw hook under the template fixing seat 93 is pulled by the plane under the die assembly stripping workbench, so that the template and the template fixing seat 93 continue to descend along with the draw hook, the template and the iron mold are gradually separated, finally completing the separation of the iron mold and the template, completing the die stripping action of the iron mold and the template, the template and the template fixing seat 93 descend and fall back to the corresponding fixing seat frame of the movable bar frame trolley, the die-stripping lifting cylinder drives the workbench to descend to the bottom continuously, and a gap of 3-5 mm is formed between, when the movable frame trolley 91 moves in a shuttling mode, the trolley and the workbench cannot collide with each other, and then the iron mold can pass through the iron mold conveying roller bed 3 and be sent out of the sand-lined molding machine to complete sand-lined molding of the casting mold; the sand-lined molding of another casting iron mold is similar to the sand-lined molding of the casting iron mold, the iron mold enters a sand-lined molding station through an iron mold conveying roller table 3, a template of the casting is moved to the sand-lined molding station through a template shuttle mechanism 9, a sand shooting head for sand shooting and sand-lined molding of the casting is moved to the sand-lined molding station, and then the iron mold and the template are subjected to mold closing, sand shooting and molding, solidification and mold stripping to complete the sand-lined molding of the casting iron mold.

The embodiment is used for the sand lined metal mold casting production line which adopts one sand lined metal mold molding device to simultaneously produce two varieties of castings, can reduce half of the demand amount of the iron molds needed by the sand lined metal mold casting production line, greatly reduces the mold investment cost produced by adopting the sand lined metal mold casting technology, and enables a plurality of small-batch casting products to be produced by adopting the sand lined metal mold casting technology, thereby greatly improving the quality of the castings.

In the sand-lined molding of the sand-lined molding machine, the sand-lined mold in the sand shooting head is blown into a gap between the mold and the iron mold by compressed air to form a thin sand-lined layer, and then the thin sand-lined layer is solidified and stripped to finally form the sand-lined iron mold.

The working principle of the molding machine device of the embodiment is as follows: referring to fig. 3-4, there are two sand-lined molding stations, and each station has a template shuttle mechanism 9 for placing two templates, namely: two template stations have been increased on the basis that two sand-lined molding stations only had two model stations, promptly: the four template stations are arranged on two sides of the two sand shooting and molding stations in a pairwise parallel mode, the four template stations are connected pairwise through a shuttle mechanism and can be respectively and movably arranged at the sand shooting and molding stations, and each molding station is provided with two sand shooting heads capable of moving in a shuttling mode and corresponds to two sets of templates. When one product casting is subjected to sand coating modeling, the template and the sand shooting head which need to be subjected to sand coating modeling are moved to the sand coating modeling station in a shuttling mode to perform sand coating modeling, and when the other product casting is subjected to sand coating modeling, the template and the sand shooting head of the other product casting are moved to the sand coating modeling station in a shuttling mode to perform sand coating modeling.

This embodiment adopts two sand shooting stations, promptly: the two mold closing and stripping mechanisms 2 are similar to a common double-station sand-lined molding machine; two template shuttle mechanisms 9, can install four templates, promptly: templates for two varieties of castings; the sand shooting head shuttle mechanisms 10 are in shuttling movement, and each sand shooting head shuttle mechanism 10 is provided with two sand shooting heads, so that sand coating modeling work on two different types of castings, namely four different iron molds, can be realized on two sand shooting sand coating modeling stations.

The device of the embodiment is different from a common double-station iron mold sand-lined molding machine in that: two sets of template shuttle mechanisms 9 are added, so that the template stations are increased from the original two template stations to four model stations; meanwhile, a template fixing seat 93 and a fixing seat draw hook 97 are added; the former two-shot sand-covering moulding station is provided with one shuttle-moving sand-shooting head and two shuttle-moving sand-shooting heads which are connected together, so that the former two-shot sand-covering moulding station is changed into four-shot sand-covering moulding station.

The sand-lined molding machine can be used for placing four sand-lined molding templates, namely four templates of two kinds of castings, the length of the molding device is similar to that of the molding devices at two stations, the sand-lined molding machine can be used for an iron mold sand-lined casting production line for producing two kinds of castings simultaneously, and the capital investment of the molding device is less than that of two double-station sand-lined molding machines, so that the investment of iron mold tools in the production line is greatly reduced, and the investment of the iron mold sand-lined casting production tools is reduced.

And will be apparent to those skilled in the art from the foregoing description.

In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an example of the structure of the present invention. All the equivalent changes or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims (8)

1. The utility model provides a sand-lined molding machine device of four templates, includes iron mold rollgang, upper beam, stand, sand fill, gas bag and base, the upper beam passes through the stand to be connected with the base, and sand fill, gas bag set up on the upper beam, and iron mold rollgang installs on the stand its characterized in that: the sand shooting and sand covering mechanism is fixed on the upper beam, the sand shooting head shuttle mechanism is matched with the sand shooting and sand covering mechanism, the number of the sand shooting and sand covering mechanism, the template shuttle mechanism and the sand shooting head shuttle mechanism is at least two, each sand shooting head shuttle mechanism is provided with two sand shooting heads capable of moving in a shuttling way, and lifting cylinders of the two sand shooting and mold closing mechanisms are fixed on the base; template shuttle mechanism fixed mounting is on the base, this template shuttle mechanism includes the travelling frame dolly, the travelling car jar, the template fixing base, the travelling car track, fixed cross beam, the fixing base drag hook, dolly drag hook and many track feet, the travelling frame dolly is installed on the travelling car track, this travelling car track fixed mounting is on track foot, many track feet are all fixed on the base, link to each other through fixed cross beam between each track foot, travelling car jar one end is fixed on fixed cross beam, the piston rod of this travelling car jar is connected with the travelling frame dolly, two template fixing base activities are placed on the travelling frame dolly, two little parking stall hooks that prevent the travelling frame dolly from rising are respectively installed to travelling frame dolly below both sides, be equipped with the fixing base drag hook on the template fixing base.

2. The four-pattern sand lined molding machine apparatus of claim 1, wherein: the two sand shooting heads are connected through two parallel double-head hinge pull rods; one sand shooting head is provided with a 4-6 mm ascending movement stroke in the process of completing sand shooting.

3. The four-pattern sand lined molding machine apparatus of claim 1, wherein: the clearance between the lower plane of the movable frame trolley and the workbench of the die closing and stripping mechanism is 3-5 mm.

4. The four-pattern sand lined molding machine apparatus of claim 1, wherein: the clearance between the four edges of the template fixed seat and the four edges of the mounting frame of the movable frame trolley is 2-4 mm.

5. The four-pattern sand lined molding machine apparatus of claim 4, wherein: the angles of the four edges of the template fixing seat and the inclined planes of the four edges of the mounting frame of the movable frame trolley are both 8-10 degrees.

6. The four-pattern sand lined molding machine apparatus of claim 1, wherein: the movable trolley track, the track feet and the fixed cross beam are connected into a whole.

7. The four-pattern sand lined molding machine apparatus of claim 1, wherein: the iron-type conveying roller way adopts a motorized roller way or a manual pushing roller way.

8. The four-pattern sand lined molding machine apparatus of claim 1, wherein: the base, the upright posts and the upper beam are connected into a frame structure.

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