Sand shooting structure of molding machine

Abstract

The utility model provides a sand shooting structure of a molding machine, and relates to the technical field of molding machines. The device comprises a sand feeding unit, a sand bin, an upper rack, a compaction unit, two guide hoppers and an air inlet system, the sand feeding unit, the sand bin, the upper rack and the compaction unit are sequentially connected from top to bottom, the guide hoppers are symmetrically arranged, the tops of the guide hoppers are communicated with the sand bin, the guide hoppers penetrate out of the bottom of the compaction unit after penetrating through the upper rack, and the air inlet system is connected with the upper rack. The sand feeding unit, the sand bin, the upper machine frame, the compaction unit, the guide hoppers and the air inlet system are integrated to form an integral structure, an operation station of a sand shooting procedure and an operation station of a compaction procedure are spatially integrated, and the sand feeding unit, the sand bin, the upper machine frame, the compaction unit, the guide hoppers and the air inlet system are integrated to form an integral structure. According to the compaction unit, the structure is more compact, meanwhile, the occupied space is reduced, a setting space capable of being flexibly arranged can be formed between the two guide hoppers, and therefore the operation modes of the compaction unit are enriched, the overall structure is simpler, and the manufacturing cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of molding machines, in particular to a sand shooting structure of a molding machine. Background Art

[0002] The existing static pressure line molding machines generally adopt the gravity sand adding operation mode, which cannot give the sand a certain pre-tightening force. At the same time, the existing molding machines are respectively provided with workstations for the sand adding process and the compaction process, one workstation is the gravity sand adding workstation, and the other workstation is the compaction workstation. The two workstations work alternately, and after the operation at one workstation is completed, it needs to be transferred to another workstation. This makes the overall structure of the molding machine more complicated and the machine occupies a larger area. Utility Model Content

[0003] The purpose of the utility model is to provide a sand-shooting structure of a molding machine to solve the technical problem that the existing molding machine in the prior art has separate workstations for the sand-adding process and the compacting process, resulting in a relatively complex overall structure of the molding machine and a large footprint of the machine. The various technical effects that can be produced by the preferred technical solution among the various technical solutions provided by the utility model are described in detail below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A sand shooting structure of a molding machine comprises a sand feeding unit, a sand storage, an upper frame, a compacting unit, a guide bucket and an air intake system. The sand feeding unit, the sand storage, the upper frame and the compacting unit are sequentially connected from top to bottom. The number of the guide buckets is two and they are symmetrically arranged. The top of the guide bucket is connected to the sand storage. The guide bucket passes through the upper frame and then comes out from the bottom of the compacting unit. The compacting unit forms a setting space between the two guide buckets. The air intake system is connected to the sand storage.

[0006] Preferably, the sand feeding unit comprises a sand feeding hopper, a sand feeding switch valve and a sand feeding switch valve cylinder, the sand feeding switch valve is connected between the sand feeding hopper and the sand storage, and the sand feeding switch valve cylinder is drivingly connected to the sand feeding switch valve.

[0007] Preferably, the air intake system includes a first air intake unit and a second air intake unit, an upper air duct is provided at the upper part of the sand storage, the first air intake unit is connected to the upper air duct, a middle and lower air duct is provided at the middle and lower part of the sand storage, and the second air intake unit is connected to the middle and lower air duct.

[0008] Preferably, the air intake system further includes a third air intake unit, a guide air duct is provided at the lower center of the sand storage, and the third air intake unit is communicated with the guide air duct.

[0009] Preferably, a guide assembly is also provided at the lower center of the sand storage, and the guide assembly is located between the main body of the sand storage and the guide air duct, and the bottom of the guide assembly is respectively connected to the two guide buckets, and the guide assembly can guide the sand inside the sand storage to flow to the guide buckets and block the sand from entering the guide air duct.

[0010] Preferably, the guide assembly includes a guide plate and a breathable plate, the two guide plates are inclined and symmetrically arranged, one breathable plate is connected to the top of each guide plate, and the bottom of each guide plate is connected to one guide bucket.

[0011] Preferably, the air intake system further includes a fourth air intake unit, and the fourth air intake unit is connected to the top of the sand storage.

[0012] Preferably, the compacting unit includes an integrated plate, a support seat and a lower pressure plate connected in sequence from top to bottom, the integrated plate is connected to the upper frame, and the integrated plate, the support seat, the lower pressure plate and the two guide buckets together enclose the setting space.

[0013] Preferably, the compacting unit also includes a multi-contact cylinder assembly, which is arranged inside the setting space. The multi-contact cylinder assembly includes a plurality of integrable cylinders, which are distributed in an array, the piston rods of the integrable cylinders are connected to the integration plate, and the cylinder bodies of the integrable cylinders pass through the lower pressure plate.

[0014] Preferably, it also includes an auxiliary sand box, which is connected to the upper frame through an external driving device. The external driving device can drive the auxiliary sand box to move in the vertical direction relative to the compacting unit, and the sand flowing out of the bottom of the guide bucket can enter the auxiliary sand box.

[0015] The beneficial effects of the utility model are as follows: by integrating the sand feeding unit, sand storage, upper frame, compacting unit, guide bucket and air intake system to form an overall structure, the work stations of the sand shooting process and the work stations of the compacting process are spatially integrated, the structure is more compact and the occupied space is reduced. A setting space that can be flexibly set can also be formed between the two guide buckets, thereby enriching the working mode of the compacting unit. The overall structure is simpler, the failure rate is low, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a cross-sectional structural diagram of a setting space of the utility model in which an oil cylinder that can be integrated is set;

[0018] Figure 2 This is a cross-sectional structural diagram of the utility model in which no structure is arranged in the setting space, and the pressing net is shown in the figure;

[0019] In the figure, 1 is a sand feeding unit; 11 is a sand feeding hopper; 12 is a sand feeding switch valve; 13 is a sand feeding switch valve cylinder;

[0020] 2. Sand storage; 21. Upper airway; 22. Middle and lower airway; 23. Guide airway; 24. Guide assembly; 241. Guide plate; 242. Breathable plate;

[0021] 3. Put it on the rack;

[0022] 4. Compacting unit; 41. Integrated plate; 42. Support seat; 43. Lower pressing plate; 44. Integrable oil cylinder; 45. Setting space;

[0023] 5. Guide bucket;

[0024] 61. First air intake unit; 62. Second air intake unit; 63. Third air intake unit; 64. Fourth air intake unit;

[0025] 7. Auxiliary sand box. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate positions or location relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0029] Reference Figure 1 to Figure 2 , a sand shooting structure of a molding machine, comprising a sand feeding unit 1, a sand storage 2, an upper frame 3, a compacting unit 4, a guide bucket 5 and an air intake system;

[0030] The sand feeding unit 1, the sand storage 2, the upper frame 3 and the compacting unit 4 are connected in sequence from top to bottom. The sand feeding unit 1 is connected to an external sand supply device. The sand delivered by the external sand supply device can be delivered to the sand storage 2 through the sand feeding unit 1. The sand storage 2 can be used to store sand. The upper frame 3 plays a fixing role for the sand storage 2 and the compacting unit 4.

[0031] There are two guide buckets 5 and they are symmetrically arranged. The top of the guide bucket 5 is connected to the sand storage 2. The guide bucket 5 passes through the upper frame 3 and then passes through the bottom of the compacting unit 4. The guide bucket 5 can guide the sand in the sand storage 2 so that it can be filled into the auxiliary sand box 7 described below more quickly. In this embodiment, the material of the guide bucket 5 can be stainless steel or other wear-resistant materials.

[0032] In addition, it is worth noting that after the two guide buckets 5 are set, the compacting unit 4 can form a setting space 45 between the two guide buckets 5. The interior of the setting space 45 can be flexibly set according to the use needs. It can be set without any structure, or the following multi-contact cylinder assembly can be set. After the multi-contact cylinder assembly is set, the operation mode of the compacting unit 4 can be enriched, and different modes can be adopted for different products.

[0033] The air intake system is connected to the sand storage 2. By providing the air intake system, the sand shooting operation can be performed by airflow suspension sand shooting, so that the sand mold has a certain pre-tightening force and forms a good sand mold structure;

[0034] The sand feeding unit 1, the sand storage 2, the upper frame 3, the compacting unit 4, the guide bucket 5 and the air intake system are integrated into an overall structure, and the work stations of the sand shooting process and the compacting process are spatially integrated, which makes the structure more compact and reduces the occupied space. A setting space 45 that can be flexibly set can also be formed between the two guide buckets 5, thereby enriching the working mode of the compacting unit 4. The overall structure is simpler, the failure rate is low, and the production cost is low.

[0035] As an optional embodiment, the sand feeding unit 1 includes a sand feeding hopper 11, a sand feeding switch valve 12 and a sand feeding switch valve cylinder 13, the sand feeding switch valve 12 is connected between the sand feeding hopper 11 and the sand storage 2, and the sand feeding switch valve cylinder 13 is transmission-connected to the sand feeding switch valve 12;

[0036] The sand feeding hopper 11 is connected to the external sand supply device, and the sand feeding switch valve cylinder 13 can control the opening and closing of the sand feeding switch valve 12. After the sand feeding switch valve 12 is opened, the external sand supply device can be connected to the sand storage 2;

[0037] When the molding machine is in operation, it is necessary to first control the sand inlet switch valve 12 to open through the sand inlet switch valve cylinder 13, so that the external sand supply device is connected with the sand storage 2, and the sand transported by the external sand supply device enters the sand storage 2 after passing through the sand inlet hopper 11;

[0038] The interior of the sand storage 2 is preferably provided with a level meter, which detects the sand height inside the sand storage 2. When the requirement is reached, the sand inlet switch valve 12 is closed by controlling the sand inlet switch valve cylinder 13, and then subsequent sand shooting operations can be carried out.

[0039] As an optional embodiment, the air intake system includes a first air intake unit 61 and a second air intake unit 62. An upper air duct 21 is provided at the upper part of the sand storage 2, and the first air intake unit 61 is connected to the upper air duct 21. A middle and lower air duct 22 is provided at the middle and lower part of the sand storage 2, and the second air intake unit 62 is connected to the middle and lower air duct 22.

[0040] After the first air inlet unit 61 is turned on, the sand at the upper part of the sand storage 2 can be boiled, and after the second air inlet unit 62 is turned on, the sand at the middle and lower part of the sand storage 2 can be boiled. The first air inlet unit 61 and the second air inlet unit 62 cooperate with each other to form an airflow suspended sand shooting operation state, so that the sand shooting effect is better;

[0041] In addition, the upper air duct 21 can not only be used for boiling sand shooting, but also for removing the residual air inside the sand storage 2 after the sand shooting is completed. Since the volume of the upper air duct 21 is smaller than the entire sand storage 2 and is easy to replace, after long-term use, the structure at the upper air duct 21 can be replaced to avoid replacing the entire sand storage 2, effectively saving costs;

[0042] The first air inlet unit 61 preferably includes an air inlet and a switch valve, the air inlet is connected to the switch valve, the switch valve is connected to an external air supply device, and the switch valve can control the opening and closing of the air inlet;

[0043] The second air inlet unit 62 preferably includes an air inlet and a switch valve, the air inlet is connected to the switch valve, the switch valve is connected to an external air supply device, and the switch valve can control the opening and closing of the air inlet;

[0044] The upper air passage 21 and the middle and lower air passage 22 are preferably annular air passages, which can be evenly distributed on the four sides of the sand storage 2 to make the air intake uniform.

[0045] As an optional embodiment, the air intake system further includes a third air intake unit 63, a guide air duct 23 is provided at the lower center of the sand storage 2, and the third air intake unit 63 is connected to the guide air duct 23;

[0046] Since the lower center of the sand storage 2 is far away from the four sides of the sand storage 2, it is difficult to form a good airflow suspension sand shooting effect at the lower center by simply relying on the first air intake unit 61 and the second air intake unit 62. Therefore, by providing the third air intake unit 63, the third air intake unit 63 can boil the sand at the lower center of the sand storage 2 after being turned on, so that the sand here can also form an airflow suspension sand shooting operation state when shooting sand, thereby improving the overall fluidity of the sand storage 2;

[0047] The third air inlet unit 63 preferably includes an air inlet and a switch valve, the air inlet is connected to the switch valve, the switch valve is connected to an external air supply device, and the switch valve can control the opening and closing of the air inlet.

[0048] As an optional implementation, a guide component 24 is also provided at the lower center of the sand storage 2. The guide component 24 is located between the main body of the sand storage 2 and the guide air duct 23. The bottom of the guide component 24 is respectively connected to the two guide buckets 5. The guide component 24 can guide the sand inside the sand storage 2 to flow to the guide buckets 5 and block the sand from entering the guide air duct 23. The guide component 24 plays a guiding role for the sand by adding hardware.

[0049] As an optional embodiment, the guide assembly 24 includes a guide plate 241 and a breathable plate 242. The two guide plates 241 are inclined and symmetrically arranged. The guide plates 241 are provided with a plurality of guide holes for gas flow. An air permeable plate 242 is connected above each guide plate 241. The air permeable plate 242 can block the passage of sand while allowing gas to pass through by limiting the size of the opening. The bottom of each guide plate 241 is connected to a guide bucket 5. The inclined guide plates 241 can accelerate the flow of sand.

[0050] In this embodiment, the material of the air permeable plate 242 can be plastic material, stainless steel mesh material, or other air permeable materials.

[0051] In this embodiment, the guide assembly 24 further includes a pressing net, which is located above the air permeable plate 242. The pressing net can connect the guide plate 241, the air permeable plate 242 and the sand storage 2 together to play a fixing role;

[0052] It is worth noting that, in fact, the sand storage 2 is also provided with a combination structure of a guide plate, a breathable plate and a pressure net at the upper air duct 21 and the middle and lower air duct 22. The guide plate, the breathable plate and the pressure net are all arranged perpendicular to the horizontal plane, and their connection method is similar to the above connection method. The structure itself is a relatively conventional prior art, so no further description is made, and no detailed marking is made in the drawings;

[0053] For the molding machine as a whole, the compressed air can be evenly distributed to each part of the sand storage 2 after passing through the corresponding air duct, the guide holes on the guide plate and the corresponding air permeable plate in sequence, and the sand is boiled by the uniform airflow.

[0054] As an optional implementation, the air intake system further includes a fourth air intake unit 64 , which is connected to the top of the sand storage 2 .

[0055] After the fourth air inlet unit 64 is turned on, it can exert a downward force on the sand inside the sand storage 2, so that the sand can be more quickly filled from the sand storage 2 through the guide bucket 5 into the auxiliary sand box 7 described below, so that every corner of the sand is filled very fully;

[0056] The fourth air intake unit 64 preferably includes an air intake port and a switch valve, the air intake port is communicated with the switch valve, the switch valve is communicated with an external air supply device, and the switch valve can control the opening and closing of the air intake port.

[0057] As an optional embodiment, the compacting unit 4 includes an integrated plate 41, a support seat 42 and a lower pressing plate 43 connected in sequence from top to bottom, the integrated plate 41 is connected to the upper frame 3, the guide bucket 5 passes through the integrated plate 41, the support seat 42 and the lower pressing plate 43 in sequence, and the integrated plate 41, the support seat 42, the lower pressing plate 43 and the two guide buckets 5 together enclose a setting space 45;

[0058] The interior of the setting space 45 can be flexibly arranged according to the use requirements. It may not be arranged with any structure, or the following multi-contact cylinder assembly may be arranged.

[0059] As an optional embodiment, the compacting unit 4 further includes a multi-contact cylinder assembly, which is arranged inside the setting space 45, and the multi-contact cylinder assembly includes a plurality of integrable cylinders 44, which are distributed in an array, and the piston rods of the integrable cylinders 44 are connected to the integration plate 41, and the cylinder bodies of the integrable cylinders 44 pass through the lower pressure plate 43;

[0060] Several integrable cylinders 44 are connected to the integrated board 41. Each integrable cylinder 44 is equivalent to a contact. All integrable cylinders 44 are integrated and controlled through the integrated board 41, thereby forming a multi-contact cylinder assembly.

[0061] During actual operation, the piston rod of the integrated oil cylinder 44 remains relatively still, and the cylinder body of the integrated oil cylinder 44 moves relatively;

[0062] By separately setting the lower pressure plate 43 and the multi-contact oil cylinder assembly, the molding machine mentioned in this embodiment has a variety of operation modes to choose from when performing actual compaction operations. For example, the lower pressure plate 43 can be used for compaction operations after airflow suspension sand shooting, or the multi-contact oil cylinder assembly can be used for compaction operations after airflow suspension sand shooting. Different modes can be selected for different products, which is more flexible.

[0063] As an optional embodiment, it also includes an auxiliary sand box 7, which is connected to the upper frame 3 through an external driving device, and the external driving device can drive the auxiliary sand box 7 to move relative to the compacting unit 4 in the vertical direction, and the sand flowing out of the bottom of the guide bucket 5 can enter the auxiliary sand box 7;

[0064] The auxiliary sand box 7 is preferably provided with a plurality of exhaust holes, which can discharge the excess air during sand shooting;

[0065] The external driving device can be mechanically driven or hydraulically driven, which is a relatively conventional prior art, and therefore will not be further described or shown in detail in the accompanying drawings.

[0066] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A sand-shooting structure of a molding machine, characterized in that: The invention comprises a sand feeding unit (1), a sand storage (2), an upper frame (3), a compacting unit (4), a guide bucket (5) and an air intake system. The sand feeding unit (1), the sand storage (2), the upper frame (3) and the compacting unit (4) are connected in sequence from top to bottom. The number of the guide buckets (5) is two and they are symmetrically arranged. The top of the guide bucket (5) is connected to the sand storage (2). The guide bucket (5) passes through the upper frame (3) and then passes out from the bottom of the compacting unit (4). The compacting unit (4) forms a setting space (45) between the two guide buckets (5). The air intake system is connected to the sand storage (2).

2. The sand-shooting structure of the molding machine according to claim 1, characterized in that: The sand feeding unit (1) comprises a sand feeding hopper (11), a sand feeding switch valve (12) and a sand feeding switch valve cylinder (13); the sand feeding switch valve (12) is connected between the sand feeding hopper (11) and the sand storage (2); and the sand feeding switch valve cylinder (13) is transmission-connected to the sand feeding switch valve (12).

3. The sand-shooting structure of the molding machine according to claim 1, characterized in that: The air intake system comprises a first air intake unit (61) and a second air intake unit (62); an upper air passage (21) is arranged at the upper part of the sand storage (2); the first air intake unit (61) is connected to the upper air passage (21); a middle-lower air passage (22) is arranged at the middle-lower part of the sand storage (2); and the second air intake unit (62) is connected to the middle-lower air passage (22).

4. The sand-shooting structure of the molding machine according to claim 1, characterized in that: The air intake system further comprises a third air intake unit (63), a guide air duct (23) is provided at the lower center of the sand storage (2), and the third air intake unit (63) is connected to the guide air duct (23).

5. The sand-shooting structure of the molding machine according to claim 4, characterized in that: A flow guide component (24) is also provided at the lower center of the sand storage (2). The flow guide component (24) is located between the main body of the sand storage (2) and the flow guide airway (23). The bottom of the flow guide component (24) is respectively connected to the two guide buckets (5). The flow guide component (24) can guide the sand inside the sand storage (2) to flow to the guide buckets (5) and prevent the sand from entering the flow guide airway (23).

6. The sand-shooting structure of the molding machine according to claim 5, characterized in that: The guide assembly (24) comprises a guide plate (241) and a breathable plate (242), the two guide plates (241) are inclined and symmetrically arranged, one breathable plate (242) is connected to the top of each guide plate (241), and the bottom of each guide plate (241) is connected to one guide bucket (5).

7. The sand-shooting structure of the molding machine according to claim 1, characterized in that: The air intake system further comprises a fourth air intake unit (64), and the fourth air intake unit (64) is connected to the top of the sand storage (2).

8. The sand-shooting structure of the molding machine according to claim 1, characterized in that: The compacting unit (4) comprises an integrated plate (41), a support seat (42) and a lower pressure plate (43) which are connected in sequence from top to bottom; the integrated plate (41) is connected to the upper frame (3); the integrated plate (41), the support seat (42), the lower pressure plate (43) and the two guide buckets (5) together enclose the setting space (45).

9. The sand-shooting structure of the molding machine according to claim 8, characterized in that: The compacting unit (4) further comprises a multi-contact cylinder assembly, wherein the multi-contact cylinder assembly is arranged inside the setting space (45), and the multi-contact cylinder assembly comprises a plurality of integrable cylinders (44), wherein the integrable cylinders (44) are distributed in an array, wherein the piston rods of the integrable cylinders (44) are connected to the integration plate (41), and the cylinder bodies of the integrable cylinders (44) pass through the lower pressure plate (43).

10. The sand-shooting structure of the molding machine according to claim 1, characterized in that: It also includes an auxiliary sand box (7), which is connected to the upper frame (3) via an external driving device. The external driving device can drive the auxiliary sand box (7) to move in the vertical direction relative to the compacting unit (4), and the sand flowing out from the bottom of the guide bucket (5) can enter the auxiliary sand box (7).

Images