Sand shooting cylinder and sand shooting device
By introducing sealing plates and breathable plates into the sand spraying cylinder, the problems of easy blockage and short service life of the sand spraying cylinder are solved, and the fluidity of the molding sand and the durability of the equipment are improved, and casting efficiency and quality are improved.
Patent Information
- Application Number
- CN202422295563.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The existing sand spray cylinder is easily blocked by molded sand, which affects the filling degree of molded sand entering the sand box, resulting in a decrease in casting quality and reduced working efficiency, and a short service life and difficult maintenance.
A sand spraying cylinder is designed, which includes a sealing plate and a breathable plate. Gas is passed through the airflow inlet on the sealing plate. The gas passes through the through holes of the outer wall and comes into contact with the molded sand, loosens the molded sand, increases fluidity, and forms an airflow layer with the molded sand through the breathable plate and the molded sand to reduce friction and prevent blockage. At the same time, the breathable plate can be detached to prevent rust and extends its service life.
Effectively prevent the clogging of the sand spray barrel, improve the quality and working efficiency of the cast sand mold, extend the service life of the sand spray barrel, and simplify the maintenance process.
Smart Images
Figure CN223145934U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of casting equipment, and particularly relates to a sand shooting cylinder and a sand shooting device. Background Art
[0002] A molding machine is a casting equipment for manufacturing sand molds. Generally, when the molding machine works, it is necessary to inject the loose molding sand in the sand shooting cylinder into the sand box through the action of air pressure, and then compact the molding sand in the sand box through an oil cylinder to form a sand mold for casting. Among them, according to different binders used, the molding sand can be divided into clay sand, water glass sand, cement sand, resin sand, etc.
[0003] In the related art, the general sand shooting device is to first add the molding sand into the sand shooting cylinder, and then blow the molding sand into the sand box through high-pressure air flow. Since some molding sands (such as clay sand) contain water and have poor fluidity, the molding sand will be compacted in the sand shooting cylinder after introducing high-pressure air flow into the sand shooting cylinder, which is easy to block the sand shooting cylinder, resulting in difficulty for the molding sand in the sand shooting cylinder to enter the sand box, and then the molding sand in the sand box is difficult to be filled, affecting the subsequent compaction work, and further affecting the quality of the casting sand mold, and at the same time reducing the work efficiency; moreover, the sand shooting cylinder is generally made of iron material, which is easy to rust, resulting in a short service life of the sand shooting cylinder and difficult maintenance. Utility Model Content
[0004] This application aims to at least solve one of the above technical problems in the prior art to a certain extent. To this end, the first aspect embodiment of this application provides a sand shooting cylinder that can effectively prevent sand blockage in the sand shooting cylinder.
[0005] The second aspect embodiment of this application proposes a sand shooting device having the above sand shooting cylinder.
[0006] The sand shooting cylinder according to the first aspect embodiment of this application includes: a sand shooting cylinder body, on the outer wall of which a first through hole is provided; a sealing plate, which is arranged outside the sand shooting cylinder body and connected to the sand shooting cylinder body, the sealing plate can cover the first through hole, an air flow channel is formed between the sealing plate and the sand shooting cylinder body, the air flow channel is communicated with the first through hole, and a first air inlet communicated with the air flow channel is provided on the sealing plate; a breathable plate, which is arranged inside the sand shooting cylinder body and detachably connected to the sand shooting cylinder body.
[0007] Based on the above technical solution, the embodiments of the present application at least have the following beneficial effects: Gas can be introduced into the air flow channel through the first air inlet on the sealing plate. The gas passes through the first through holes on the outer wall of the sand shooting cylinder body and can contact the molding sand in the sand shooting cylinder body through the air permeable plate, which can loosen the molding sand in the sand shooting cylinder body and increase the fluidity of the molding sand. A layer of air flow layer can also be formed between the air permeable plate and the molding sand, which can reduce the friction force, facilitate sand shooting, and prevent sand blockage in the sand shooting cylinder. Furthermore, the quality of the sand mold for casting can be improved, and the working efficiency can also be improved. The air permeable plate can separate the sand shooting cylinder body from the molding sand, effectively prevent the sand shooting cylinder body from rusting, and thus extend the service life of the sand shooting cylinder. While allowing gas to enter the sand shooting cylinder body, the air permeable plate can also prevent the molding sand in the sand shooting cylinder body from leaking out through the first through holes. The air permeable plate is detachably connected to the sand shooting cylinder body, and during repair, only the air permeable plate needs to be removed, which is convenient for operators to maintain.
[0008] The sand shooting cylinder according to the first aspect embodiment of the present application further includes a pressing member, and the pressing member is arranged on the side of the air permeable plate facing away from the first through holes. The pressing member is used to press the air permeable plate so that the air permeable plate closely adheres to the sand shooting cylinder body.
[0009] The sand shooting cylinder according to the first aspect embodiment of the present application further includes a fastening member. The fastening member passes through the pressing member and the air permeable plate and can be inserted into the sand shooting cylinder body to fix the pressing member and the air permeable plate on the sand shooting cylinder body.
[0010] For the sand shooting cylinder according to the first aspect embodiment of the present application, the pressing member is made of stainless steel material.
[0011] For the sand shooting cylinder according to the first aspect embodiment of the present application, the pressing member is a pressing frame, and second through holes are arranged on the pressing frame, and the first through holes can be opposite to the second through holes.
[0012] For the sand shooting cylinder according to the first aspect embodiment of the present application, the air permeable plate is made of polyoxymethylene resin material.
[0013] For the sand shooting cylinder according to the first aspect embodiment of the present application, the sand shooting cylinder body includes a first part, a second part, and a third part. The first part and the third part extend in the vertical direction, the second part extends in the horizontal direction, and both ends of the second part are respectively communicated with the first part and the third part.
[0014] For the sand shooting cylinder according to the first aspect embodiment of the present application, the sand shooting cylinder body has a feeding port and a discharging port. The feeding port is arranged at one end of the first part away from the second part, and the discharging port is arranged at one end of the third part away from the second part.
[0015] The sand shooting cylinder according to the first aspect embodiment of the present application, the bottom wall of the first part is inclined upward in a direction away from the second part, and a second air flow inlet is provided on the bottom wall of the first part.
[0016] The sand shooting device according to the second aspect embodiment of the present application includes the above-mentioned sand shooting cylinder.
[0017] The additional aspects and advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. Description of the Drawings
[0018] The present application will be further described below in conjunction with the drawings and embodiments;
[0019] Figure 1 It is a schematic structural diagram of the sand shooting cylinder in the first aspect embodiment of the present application;
[0020] Figure 2 It is another schematic structural diagram of the sand shooting cylinder in the first aspect embodiment of the present application;
[0021] Figure 3 It is Figure 2 the sectional view taken along the A-A direction of
[0022] Figure 4 It is Figure 3 the enlarged view of part C in
[0023] Figure 5 It is another schematic structural diagram of the sand shooting cylinder in the first aspect embodiment of the present application;
[0024] Figure 6 It is Figure 5 the sectional view taken along the B-B direction of
[0025] Reference numerals: sand shooting cylinder body 100, first part 110, bottom wall 111, second air flow inlet 1111, second part 120, third part 130, first through hole 140, feeding port 150, discharging port 160; sealing plate 200, first air flow inlet 210, air flow channel 220; air permeable plate 300; pressing part 400, second through hole 410; fastener 500. Detailed Embodiments
[0026] This part will describe in detail the specific embodiments of the present application. The preferred embodiments of the present application are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present application, but it cannot be understood as a limitation on the protection scope of the present application.
[0027] In the description of the present application, it should be understood that for the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.
[0028] In the description of the present application, the meaning of several is one or more, the meaning of multiple is more than two. Understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first, second, etc., it is only for the purpose of distinguishing technical features and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0029] In the description of the present application, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical solution.
[0030] Next, the technical solution of the present application will be further described in conjunction with embodiments and drawings.
[0031] See Figures 1 to 6 , an embodiment of the first aspect of the present application provides a sand shooting cylinder, which can effectively prevent sand blockage in the sand shooting cylinder, can extend the service life of the sand shooting cylinder, and is also convenient for operators to maintain.
[0032] The sand shooting cylinder includes a sand shooting cylinder body 100, a sealing plate 200 and a breathable plate 300. A first through hole 140 is provided on the outer wall of the sand shooting cylinder body 100; the sealing plate 200 is arranged outside the sand shooting cylinder body 100 and is connected to the sand shooting cylinder body 100. The sealing plate 200 can cover the first through hole 140. An air flow channel 220 is formed between the sealing plate 200 and the sand shooting cylinder body 100. The air flow channel 220 is communicated with the first through hole 140. A first air inlet 210 communicated with the air flow channel 220 is provided on the sealing plate 200; the breathable plate 300 is arranged inside the sand shooting cylinder body 100 and is detachably connected to the sand shooting cylinder body 100.
[0033] See Figure 1 and Figure 6, gas (e.g., low-pressure air) can be introduced into the air flow channel 220 through the first air inlet 210 on the sealing plate 200. The gas passes through the first through hole 140 on the outer wall of the sand shooting cylinder body 100, and can contact the molding sand in the sand shooting cylinder body 100 through the air permeable plate 300. It can loosen the molding sand in the sand shooting cylinder body 100, increase the fluidity of the molding sand, and can also form an air flow layer between the air permeable plate 300 and the molding sand, which can reduce the friction force, is beneficial to sand shooting, and can also prevent sand blockage in the sand shooting cylinder, thereby improving the quality of the sand mold for casting and also improving the working efficiency; the air permeable plate 300 can separate the sand shooting cylinder body 100 from the molding sand, effectively prevent the sand shooting cylinder body 100 from rusting, and thus extend the service life of the sand shooting cylinder; while allowing gas to enter the sand shooting cylinder body 100, the air permeable plate 300 can also prevent the molding sand in the sand shooting cylinder body 100 from leaking out through the first through hole 140; the air permeable plate 300 is detachably connected to the sand shooting cylinder body 100, and during repair, only the air permeable plate 300 needs to be removed, which is convenient for operators to maintain.
[0034] It can be understood that one or more first through holes 140 can be provided on the outer wall of the sand shooting cylinder body 100. Optionally, a plurality of first through holes 140 are provided on the outer wall of the sand shooting cylinder body 100, and the plurality of first through holes 140 are evenly arranged on the outer wall of the sand shooting cylinder body 100, which can make the introduced gas enter the sand shooting cylinder body 100 evenly. Optionally, the first through hole 140 is a square hole.
[0035] It can be understood that the number of settings, arrangement mode and shape of the first through holes 140 can all be adjusted according to the actual situation, and no specific restrictions are made here.
[0036] It can be understood that the sealing plate 200 can be partially arranged outside the position where the first through hole 140 is provided on the sand shooting cylinder body 100, or can completely cover the outside of the sand shooting cylinder body 100. The sealing plate 200 can be set according to actual needs, and no specific restrictions are made here.
[0037] Optionally, a sealing plate 200 is welded on the outside of the sand shooting cylinder body 100 at the position where the first through hole 140 is provided. A sealed air flow channel 220 is formed between the sealing plate 200 and the sand shooting cylinder body 100, which is beneficial for the gas introduced through the first air inlet 210 to pass through the first through hole 140 and the air permeable plate 300 and enter the sand shooting cylinder body 100, so as to contact the molding sand in the sand shooting cylinder body 100.
[0038] Exemplarily, the sand shooting cylinder body 100 has a bottom wall 111 and four side walls connected to the bottom wall 111. The four side walls are circumferentially arranged on one side of the bottom wall 111, and the four side walls are connected end to end to enclose a cavity for accommodating molding sand. A plurality of first through holes 140 are evenly arranged on each of the four side walls. A sealing plate 200 is provided on the outer side of each of the four side walls. The four sealing plates 200 can be respectively connected to the sand shooting cylinder body 100 to form four independent air flow channels 220. One or more first air inlets 210 can be provided on each sealing plate 200 to communicate with the corresponding air flow channel 220. Of course, the four sealing plates 200 can also be connected end to end circumferentially and are respectively connected to the sand shooting cylinder body 100 at the upper and lower ends to form an air flow channel 220, and one or more first air inlets 210 can be provided to communicate with the air flow channel 220.
[0039] It can be understood that the specific number and specific setting position of the first air inlets 210 on the sealing plate 200 can be set according to actual needs and are not specifically limited herein.
[0040] In some embodiments, the sand shooting cylinder further includes a pressing member 400. The pressing member 400 is arranged on the side of the air permeable plate 300 facing away from the first through holes 140. The pressing member 400 is used to press the air permeable plate 300 so that the air permeable plate 300 closely adheres to the sand shooting cylinder body 100, which can prevent the air permeable plate 300 from deforming. If the air permeable plate 300 does not closely adhere to the sand shooting cylinder body 100, there will be a gap between the air permeable plate 300 and the sand shooting cylinder body 100, and the molding sand in the sand shooting cylinder body 100 will squeeze the air permeable plate 300, making the air permeable plate 300 prone to deformation.
[0041] In some embodiments, referring to Figure 3 and Figure 4 , the sand shooting cylinder further includes a fastener 500. The fastener 500 passes through the pressing member 400 and the air permeable plate 300 and can be inserted into the sand shooting cylinder body 100 to fix the pressing member 400 and the air permeable plate 300 on the sand shooting cylinder body 100.
[0042] Optionally, the fastener 500 is a fastening bolt. Of course, the fastener 500 can also be other fasteners 500 with a fastening function such as screws, rivets, studs, etc., which are not specifically limited herein.
[0043] Optionally, both the pressing member 400 and the fastener 500 are made of stainless steel material, which can well solve the problem of the sand shooting cylinder rusting due to the moisture in the molding sand.
[0044] Optionally, referring to Figure 3 or Figure 6, the pressing member 400 is a pressing frame, and a second through hole 410 is provided on the pressing frame. The first through hole 140 can be opposite to the second through hole 410, so that the gas passing through the first through hole 140 and the air permeable plate 300 can enter the sand shooting cylinder body 100 through the second through hole 410, and thus contact the molding sand in the sand shooting cylinder body 100.
[0045] It can be understood that one or more second through holes 410 can be provided on the pressing frame. When the first through hole 140 is opposite to the second through hole 410, the second through hole 410 and the first through hole 140 can be in a one-to-one relationship, or a one-to-many, or many-to-one, or many-to-many relationship. Optionally, a plurality of second through holes 410 are provided on the pressing frame, and the plurality of second through holes 410 are arranged evenly, and each first through hole 140 has a corresponding second through hole 410. Optionally, the second through hole 410 is also a square hole.
[0046] It can be understood that an air permeable plate 300 and a pressing member 400 can also be provided on the inner side of the position on the sand shooting cylinder body 100 where the first through hole 140 is not provided, so as to separate the molding sand from the sand shooting cylinder body 100 and play a role in protecting the sand shooting cylinder body 100.
[0047] Optionally, the air permeable plate 300 is made of polyoxymethylene resin (POM) material, and the polyoxymethylene resin (POM) material has sufficient strength and is wear-resistant.
[0048] See Figure 1 , the sand shooting cylinder body 100 has a feeding port 150, a discharging port 160 and a cavity for accommodating molding sand. Optionally, the cavity can be surrounded by the air permeable plate 300 on the inner side of the sand shooting cylinder body 100 to separate the molding sand from the sand shooting cylinder body 100. The feeding port 150 and the discharging port 160 are both communicated with the cavity. The feeding port 150 is used to add molding sand into the cavity of the sand shooting cylinder body 100, and the discharging port 160 is used to shoot out the molding sand. The second air inlet 1111 is also communicated with the cavity.
[0049] In some embodiments, see Figure 3 , the sand shooting cylinder body 100 includes a first part 110, a second part 120 and a third part 130. The first part 110 and the third part 130 extend in the vertical direction, and the first part 110 is higher than the third part 130. The second part 120 extends in the horizontal direction, and both ends of the second part 120 are communicated with the first part 110 and the third part 130 respectively.
[0050] Optionally, the feeding port 150 is provided at one end of the first part 110 away from the second part 120, and the discharging port 160 is provided at one end of the third part 130 away from the second part 120.
[0051] Optionally, the bottom wall 111 of the first part 110 is inclined upward in a direction away from the second part 120. A second air inlet 1111 is provided on the bottom wall 111 of the first part 110. The second air inlet 1111 is used to introduce high-pressure air for sand shooting. Optionally, referring to Figure 5 and Figure 6 , three second air inlets 1111 are provided.
[0052] The usage method of the sand shooting cylinder in the first aspect embodiment of the present application is as follows: Referring to Figure 5 and 6 , before sand shooting, first introduce low-pressure air from the first air inlet 210 into the air flow channel 220. The low-pressure air passes through the first through hole 140, the air-permeable plate 300, and the second through hole 410 and enters the inside of the sand shooting cylinder body 100, and contacts the molding sand in the sand shooting cylinder body 100. It can loosen the molding sand squeezed together by its own gravity, increase the fluidity of the molding sand, and can also form an air flow layer between the air-permeable plate 300 and the molding sand, reducing the friction force, which is beneficial to sand shooting. Then introduce high-pressure air from the second air inlet 1111, and the molding sand in the sand shooting cylinder body 100 can be smoothly shot into the sand box from the discharge port 160, greatly reducing the phenomenon of sand blockage, improving the quality of the casting sand mold, and also improving the work efficiency.
[0053] Other configurations and operations of the sand shooting cylinder according to the first aspect embodiment of the present application are known to those of ordinary skill in the art and will not be described in detail here.
[0054] The second aspect embodiment of the present application provides a sand shooting device, and the sand shooting device includes the sand shooting cylinder of the first aspect embodiment of the present application.
[0055] Optionally, the sand shooting device further includes a sand box and a sand shooting device body. The sand box and the sand shooting cylinder are both installed on the sand shooting device body, and the sand box can be communicated with the discharge port 160 of the sand shooting cylinder, so that the sand shooting cylinder can shoot the molding sand in the cavity into the sand box.
[0056] Optionally, one or more sand boxes can be provided, and one or more sand shooting cylinders can also be provided. Exemplarily, two sand boxes are provided, namely an upper sand box and a lower sand box, and two sand shooting cylinders are also provided, namely an upper sand shooting cylinder and a lower sand shooting cylinder. The upper sand box can be communicated with the discharge port 160 of the upper sand shooting cylinder, and the lower sand box can be communicated with the discharge port 160 of the lower sand shooting cylinder.
[0057] Other configurations and operations of the sand shooting device according to the second aspect embodiment of the present application are known to those of ordinary skill in the art and will not be described in detail here.
[0058] The embodiments of the present application have been described in detail with reference to the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present application within the scope of knowledge possessed by those of ordinary skill in the art.
Claims
1. Sand shooting cylinder, characterized in that, Comprising: A sand shooting cylinder body, on the outer wall of which a first through hole is provided; A sealing plate, which is arranged outside the sand shooting cylinder body and connected to the sand shooting cylinder body. The sealing plate can cover the first through hole. An air flow channel is formed between the sealing plate and the sand shooting cylinder body. The air flow channel is communicated with the first through hole. A first air flow inlet communicated with the air flow channel is provided on the sealing plate; A breathable plate, which is arranged inside the sand shooting cylinder body and detachably connected to the sand shooting cylinder body.
2. The sand injection cylinder according to claim 1, wherein: It further comprises a pressing member, which is arranged on the side of the breathable plate facing away from the first through hole. The pressing member is used for pressing the breathable plate so that the breathable plate closely adheres to the sand shooting cylinder body.
3. The sand shooting cylinder according to claim 2, characterized in that: It further comprises a fastener, which penetrates through the pressing member and the breathable plate and can be inserted into the sand shooting cylinder body to fix the pressing member and the breathable plate on the sand shooting cylinder body.
4. The sand injection cylinder according to claim 2, characterized in that: The pressing member is made of stainless steel material.
5. The sand injection cylinder according to claim 2, wherein: The pressing member is a pressing frame, and a second through hole is provided on the pressing frame. The first through hole can be opposite to the second through hole.
6. The sand injection cylinder according to claim 1, characterized in that: The breathable plate is made of polyoxymethylene resin material.
7. The sand injection cylinder according to claim 1, characterized in that: The sand shooting cylinder body comprises a first part, a second part and a third part. The first part and the third part extend in the vertical direction, and the second part extends in the horizontal direction. The two ends of the second part are respectively communicated with the first part and the third part.
8. The sand injection cylinder according to claim 7, wherein: The sand shooting cylinder body has a feeding port and a discharging port. The feeding port is arranged at one end of the first part away from the second part, and the discharging port is arranged at one end of the third part away from the second part.
9. The sand injection cylinder according to claim 8, characterized in that: The bottom wall of the first part is inclined upward in the direction away from the second part, and a second air flow inlet is provided on the bottom wall of the first part.
10. Sand shooting device, characterized in that: Comprising the sand shooting cylinder according to any one of claims 1 to 9.