Shell core machine
By setting a screening frame and screening screen inside the shell core machine base frame, and combining it with the purging unit to automatically separate impurity sand blocks and coated sand, the hassle of manual separation by workers during the use of the shell core machine is solved, production efficiency is improved and labor costs are reduced.
Patent Information
- Application Number
- CN202423145957.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-03-20
- Estimated Expiration
- 2034-12-19
AI Technical Summary
During the use of existing core-forming machines, workers need to manually separate impurity sand blocks from usable coated sand, which increases the workload.
A screening frame and a screening screen are set inside the shell core machine base frame. The impurity sand blocks and coated sand are automatically separated by gravity and the difference in mesh diameter of the screening screen. Combined with the blowing unit to clean the impurity sand blocks on the mold, they fall directly onto the screening screen.
This reduced the amount of manual screening work for workers, improved production efficiency, and lowered labor costs.
Smart Images
Figure CN224011173U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of casting technology, in particular to a shell core machine. BACKGROUND
[0002] The shell core machine is a widely used molding equipment in the casting machinery, which can meet the production needs of various shell core sands, has the characteristics of adjustable process parameters and automatic control of mold temperature. The shell core machine is a device for making coated sand shell cores by using hot core box process, and the filling sand and compaction are completed simultaneously in the working process.
[0003] The overall structure of the shell core machine mainly comprises a column assembly, a sand shooting device, a mold frame component and other parts. The entire mold frame is installed on the base through left and right support plates. The movable mold plate moves left and right along the guide column under the push-pull of the mold closing to complete the core making process of mold closing and opening. When the mold is opened, the sand core automatically follows the movable mold plate under the action of the spring top force on the fixed mold plate, and it can be easily taken out by hand.
[0004] When the sand shooting device shoots sand into the mold, in order to ensure that the inside of the mold is fully filled, a certain amount of coated sand (or shell core sand) will be sprayed out of the sand injection port of the mold at this time. At this time, the workers will use a special scraper or spatula to scrape off the excess coated sand from the mold. The coated sand remains in the mold for a certain period of time, allowing the resin in the coated sand to melt and harden the sand particles. After that, the workers need to open the mold to take out the prepared shell core. After demolding, there will be some residual hardened sand blocks on the inner wall of the mold. In order to not affect the next use, the workers will use an air gun to blow the inside of the mold. After the impurity sand blocks fall off the mold, they will mix with the coated sand cleaned by the scraper or spatula. If the coated sand scraped off by the scraper or spatula is to be reused, the impurity sand blocks and the coated sand mixture need to be screened, which will obviously increase the workload of the workers. CONTENT OF THE INVENTION
[0005] The present application provides a shell core machine, which can effectively solve the problems existing in the use of the existing shell core machine in the background art.
[0006] The above-mentioned object of the present application is achieved by the following technical solution:
[0007] A shell core machine comprises a shell core machine base frame, a mold frame component and a sand shooting device are installed above the shell core machine base frame, a cavity is arranged inside the shell core machine base frame, and an opening communicating with the cavity is arranged on the top and front side of the shell core machine base frame; a screening frame body is arranged in the cavity, the screening frame body is located directly below the mold frame component, and a screening net is fixedly arranged in the screening frame body.
[0008] The screening frame is placed on the first supporting angle steel near the lower side of one end of the opening of the front side of the shell core machine base frame, and is placed on the second supporting angle steel near the lower side of one end of the back plate of the shell core machine base frame, and the first supporting angle steel and the second supporting angle steel are fixedly connected with the shell core machine base frame.
[0009] The shell core machine base frame is externally provided with a blowing unit on one side in the length direction.
[0010] Further, the height of the second supporting angle steel is greater than the height of the first supporting angle steel.
[0011] Further, the upper end of the screening frame is provided with an upwardly extending fence along the edge profile thereof.
[0012] Further, the length of the first supporting angle steel is equal to the length of the second supporting angle steel, the side length of the screening frame in the length direction of the shell core machine base frame is less than the length of the first supporting angle steel or the second supporting angle steel, and the side length of the screening frame in the length direction of the shell core machine base frame is greater than the width of the mold after the mold in the mold frame component is opened.
[0013] Further, the distance between the second supporting angle steel and the top opening of the shell core machine base frame is greater than one half of the height of the shell core machine base frame.
[0014] Further, the blowing unit comprises a spray gun connected with an air pipe and an air compressor, a clamping joint is sleeved on the joint pipe at the bottom of the spray gun, the clamping joint is placed on a gun seat provided with a placing groove, and the placing groove at the bottom of the gun seat is provided with an avoiding hole for the joint pipe of the spray gun and the air pipe.
[0015] Further, a counterweight is fixedly sleeved on the air pipe below the gun seat, and the air pipe below the counterweight on the lower side of the shell core machine base frame is in a U shape, the pipe segment connected with the end of the U-shaped pipe segment of the air pipe away from the counterweight is in a horizontal straight line on the outside of the shell core machine base frame, and the end of the U-shaped pipe segment of the air pipe away from the counterweight and the horizontal straight pipe segment of the air pipe are fixedly installed on the outside of the shell core machine base frame by pipe clamps.
[0016] In summary, the present application has at least one of the following beneficial technical effects:
[0017] The opening at the top of the core making machine base frame facilitates the process of preparing coated sand by pouring impurity sand blocks or available coated sand into the cavity of the core making machine, so that they will fall into the screening frame in the core making machine base frame under the action of gravity and be automatically separated by the screening net in the screening frame, wherein the un-solidified coated sand is in the form of fine particles, which will fall through the mesh holes of the screening net and fall to the bottom of the core making machine base frame below the screening net, and the impurity sand blocks are agglomerated into larger-diameter impurity sand blocks under the action of resin due to the heating treatment in the mold frame component, so that the diameter of the impurity sand blocks is larger than the diameter of the mesh holes of the screening net, and thus the impurity sand blocks will not continue to fall but will stay on the screening net after falling onto the screening net, thereby eliminating the need for subsequent workers to screen the impurity sand blocks and the available coated sand particles, and effectively reducing the workload of the workers. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0019] Figure 1 is a schematic diagram of the overall structure of the present application;
[0020] Figure 2 is a front view of the present application;
[0021] Figure 3 is a side view of the present application.
[0022] Reference signs: 1, core making machine base frame; 2, mold frame component; 3, sand shooting device; 4, cavity; 5, screening frame; 6, screening net; 7, first support angle steel; 8, second support angle steel; 9, purging unit; 91, air pipe; 911, U-shaped pipe section; 912, horizontal straight pipe section; 92, sweeping air gun; 93, clamping joint; 94, gun seat; 10, fence; 11, counterweight; 12, pipe clamp. DETAILED DESCRIPTION
[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below. Obviously, the described embodiments are some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor also belong to the scope of protection of the present application.
[0024] As Figure 1 andFigure 2 As shown, the shell core machine disclosed in the present application comprises a shell core machine base frame 1, a mold frame component 2 and a sand shooting device 3 are installed above the shell core machine base frame 1, a cavity 4 is arranged inside the shell core machine base frame 1, and an opening is arranged on the top and front side of the shell core machine base frame 1 and is in communication with the cavity 4; a screening frame body 5 is arranged in the cavity 4, the screening frame body 5 is located directly below the mold frame component 2, and a screening net 6 is fixedly arranged in the screening frame body 5;
[0025] One end of the screening frame body 5 close to the opening on the front side of the shell core machine base frame 1 is placed on a first supporting angle steel 7 at the lower side, one end of the screening frame body 5 close to the back plate of the shell core machine base frame 1 is placed on a second supporting angle steel 8 at the lower side, and the first supporting angle steel 7 and the second supporting angle steel 8 are fixedly connected with the shell core machine base frame 1;
[0026] A blowing unit 9 is arranged on one side of the shell core machine base frame 1 in the length direction.
[0027] In the above embodiment, the opening arranged on the front side of the shell core machine base frame 1 of the present application and in communication with the internal cavity 4 of the shell core machine base frame 1 can facilitate workers to approach the equipment when cleaning, maintaining or repairing the equipment. The screening frame body 5 of the present application is of a rectangular structure, and the first supporting angle steel 7 and the second supporting angle steel 8 arranged in the shell core machine base frame 1 in the above manner can make the screening frame body 5 placed more stably after the screening frame body 5 is placed on them. The opening on the top of the shell core machine base frame 1 of the present application facilitates the impurity sand blocks or the available coated sand to be poured into the cavity 4 in the shell core machine during the preparation process of the coated sand, so that they will fall into the screening frame body 5 in the shell core machine base frame 1 under the action of gravity and be automatically separated by the screening net 6 in the screening frame body 5. The un-solidified coated sand is in the form of fine particles (these coated sand can be directly reused after being recycled), which will pass through the mesh holes on the screening net 6 and fall to the bottom of the shell core machine base frame 1 below the screening net 6 after falling on the screening net 6. The impurity sand blocks are formed by a plurality of sand grains agglomerated under the action of resin due to the heating treatment in the mold frame component 2 (these impurity sand blocks cannot be directly reused after being recycled), and the diameter of the impurity sand blocks is larger than that of the mesh holes on the screening net 6. Therefore, the impurity sand blocks will not continue to fall after falling on the screening net 6, but will stay on the screening net 6. In this way, the shell core machine of the present application can automatically make the excess available coated sand shot by the sand shooting device 3 during the sand shooting process fall below the screening net 6, and the impurity sand blocks remaining on the mold in the mold frame component 2 after the coated sand is formed and demolded will fall above the screening net 6 after being blown off by the blowing unit 9. Compared with the prior art, the workers can obviously save the trouble of separating the impurity sand blocks and the available coated sand and subsequently screening them separately, thereby effectively reducing the workload of the workers.
[0028] Further, as shown in FIG. 2, Figure 1 and Figure 2As shown, the height of the second support angle steel 8 is greater than the height of the first support angle steel 7.
[0029] In the above embodiment, the height of the second support angle steel 8 near the back plate of the shell core machine base 1 is greater than the height of the first support angle steel 7 at the opening of the front side of the shell core machine base 1. When the screening frame 5 is placed on the first support angle steel 7 and the second support angle steel 8, the screening frame 5 can be in an inclined state below the mold frame component 2, and the low end of the screening frame 5 is close to the opening of the front side of the shell core machine base 1. After the coated sand forming is finished and demolded, the worker uses the blowing unit 9 to clean the mold in the mold frame component 2. The impurity sand blocks falling from the mold will automatically slide along the screening net 6 to the opening of the front side of the shell core machine base 1 under the action of gravity after falling into the screening frame 5, so that the worker can collect these impurity sand blocks.
[0030] Further, as shown in Figure 1 and Figure 2 , the upper end of the screening frame 5 is provided with an upward extending fence 10 along the edge profile thereof.
[0031] In the above embodiment, the fence 10 provided on the upper side of the screening frame 5 along the edge profile thereof not only prevents the impurity sand blocks and the like from splashing outward after hitting the screening net 6, but also improves the temporary storage space of the screening frame 5 for the impurity sand blocks.
[0032] Further, as shown in Figure 1 and Figure 2 , the length of the first support angle steel 7 is equal to the length of the second support angle steel 8, the side length of the screening frame 5 along the length direction of the shell core machine base 1 is less than the length of the first support angle steel 7 or the second support angle steel 8, and the side length of the screening frame 5 along the length direction of the shell core machine base 1 is greater than the width of the mold after opening in the mold frame component 2.
[0033] In the above embodiment, the length of the first support angle steel 7 and the length of the second support angle steel 8 are both greater than the side length of the screening frame 5 along the length direction of the shell core machine base 1, and the side length of the screening frame 5 is greater than the width of the mold after opening in the mold frame component 2. In this way, while ensuring that the screening frame 5 can fully catch the excess coated sand and impurity sand blocks during use, the size of the screening frame 5 is as small as possible, thereby saving the manufacturing cost of the screening frame 5, and the gap between the screening frame 5 and the inner cavity 4 of the shell core machine base 1 also facilitates the worker to have a better visual observation of the available coated sand collection condition below the screening frame 5.
[0034] Further, the distance between the second support angle steel 8 and the opening at the top of the shell core machine base 1 is greater than one half of the height of the shell core machine base 1.
[0035] In the above embodiment, the second support angle steel 8 which is located high is arranged in the cavity 4 in the bottom frame 1 of the core making machine according to the above manner, so that sufficient space is ensured between the screening net 6 and the mold frame component 2, and the influence of the air blown by the blowing unit 9 on the material on the screening net 6 can be reduced when the worker cleans the mold in the mold frame component 2.
[0036] Further, as shown in Figure 2 and Figure 3 , the blowing unit 9 comprises a spraying air gun 92 connected with the air pipe 91 and the air compressor, the joint pipe at the bottom of the spraying air gun 92 is sleeved with a clamping joint 93, the clamping joint 93 is placed on a gun seat 94 provided with a placing groove, and the bottom of the placing groove on the gun seat 94 is provided with an avoiding hole for the joint pipe of the spraying air gun 92 and the air pipe 91 to pass through.
[0037] In the above embodiment, the spraying air gun 92 of the present application is connected with the air pipe 91 and the air compressor, and the air compressor can provide the spraying air gun 92 with air with pressure, so that the spraying air gun 92 can release the air with pressure to clean the mold after the worker opens the spraying air gun 92. The size of the clamping joint 93 on the joint pipe at the bottom of the spraying air gun 92 is larger than the size of the avoiding hole for the joint pipe of the spraying air gun 92 and the air pipe 91 to pass through at the bottom of the placing groove on the gun seat 94, so that the worker can stably place the spraying air gun 92 on the placing groove of the gun seat 94 through the clamping joint 93 when the spraying air gun 92 is not used.
[0038] Further, as shown in Figure 3 , a counterweight 11 is fixedly sleeved on the air pipe 91 below the gun seat 94, and the counterweight 11 and the gun seat 94 have a spacing; the air pipe 91 on the lower side of the counterweight 11 is in a U shape on the outside of the bottom frame 1 of the core making machine, the pipe segment away from the counterweight 11 on the U-shaped pipe segment 911 of the air pipe 91 is in a horizontal straight line on the outside of the bottom frame 1 of the core making machine, and the pipe segment away from the counterweight 11 on the U-shaped pipe segment 911 of the air pipe 91 and the horizontal straight pipe segment 912 of the air pipe 91 are both fixedly installed on the outside of the bottom frame 1 of the core making machine through pipe clamps 12.
[0039] In the above embodiments, when the spray gun 92 is in use, the worker holds the spray gun 92 upward, and the spray gun 92 drags the air pipe 91 upward. At this time, the U-shaped pipe section 911 connected with the spray gun 92 in the air pipe 91 is gradually shallowed, so as to adapt to the change of the position of the spray gun 92. A counterweight 11 is arranged on the air pipe 91 below the spray gun 92. During the working process of the spray gun 92, the counterweight 11 can drag the air pipe 91 by gravity, so as to effectively avoid that the air pipe 91 between the spray gun 92 and the gun seat 94 is hung on the shell core machine. When the spray gun 92 is placed back on the gun seat 94 after use, the counterweight 11 arranged on the air pipe 91 can also assist the worker to quickly place the spray gun 92 in place.
[0040] The implementation principle of the embodiment is as follows: when the shell core machine is in use, the worker can first control the mold in the mold frame part 2 to close, then control the sand injection device 3 to inject the coated sand into the sand injection port of the closed mold, reset the sand injection device 3 after the injection is completed, and then use the special scraper held by the worker to scrape off the excess coated sand at the sand injection port of the mold. After the coated sand is scraped off from the mold, the coated sand falls on the screening net 6 in the screening frame 5 under the action of gravity. Since the diameter of the mesh hole of the screening net 6 is larger than the particle size of the coated sand, the coated sand can fall on the bottom of the cavity 4 in the shell core machine frame 1. After the excess coated sand at the sand injection port of the mold is treated, the molding operation can be started. After the coated sand is heated and molded, the mold is opened, the molded coated sand product is taken out, the spray gun 92 is pulled out from the gun seat 94 by the worker to blow the mold, and the impurity sand blocks blown off from the mold fall on the screening net 6 under the action of gravity. Since the particle size of the impurity sand blocks is larger than the diameter of the mesh hole of the screening net 6, the impurity sand blocks cannot pass through the screening net 6 and the usable coated sand below the screening net 6, so that the worker does not need to specially screen the impurity sand blocks and the usable coated sand when the worker uses the usable coated sand later.
[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents. The modification or replacement does not change the essence of the corresponding technical solution, and does not deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. A shell core machine, comprising a shell core machine base frame (1), wherein a mold frame component (2) and a sand-shooting device (3) are mounted on the shell core machine base frame (1), characterized in that: The shell core machine base frame (1) has a cavity (4) inside, and the top and front sides of the shell core machine base frame (1) are provided with openings that communicate with the cavity (4); a screening frame (5) is provided inside the cavity (4), the screening frame (5) is located directly below the mold frame component (2), and a screening screen (6) is fixedly installed inside the screening frame (5); The screening frame (5) is placed on the first supporting angle steel (7) at one end near the front opening of the shell core machine base frame (1), and the screening frame (5) is placed on the second supporting angle steel (8) at one end near the back plate of the shell core machine base frame (1). Both the first supporting angle steel (7) and the second supporting angle steel (8) are fixedly connected to the shell core machine base frame (1). A purging unit (9) is installed on the outside of one side of the shell core machine base frame (1) along its length.
2. The shell core machine according to claim 1, characterized in that: The height of the second supporting angle steel (8) is greater than the height of the first supporting angle steel (7).
3. The shell core machine according to claim 2, characterized in that: The upper end of the screening frame (5) is provided with an upwardly extending enclosure (10) along its side contour.
4. The shell core machine according to claim 1, characterized in that: The length of the first supporting angle steel (7) is equal to the length of the second supporting angle steel (8). The side length of the screening frame (5) along the length direction of the shell core machine base frame (1) is less than the length of the first supporting angle steel (7) or the second supporting angle steel (8). The side length of the screening frame (5) along the length direction of the shell core machine base frame (1) is greater than the width of the mold after the mold is opened in the mold frame component (2).
5. The shell core machine according to claim 2, characterized in that: The distance between the second supporting angle steel (8) and the top opening of the shell core machine base frame (1) is greater than half the height of the shell core machine base frame (1).
6. The shell core machine according to any one of claims 1 to 5, characterized in that: The purging unit (9) includes a purging air gun (92) connected to an air compressor via an air pipe (91). A snap-fit connector (93) is fitted onto the connector tube at the bottom of the purging air gun (92). The snap-fit connector (93) is placed on a gun holder (94) with a placement groove. The bottom of the placement groove on the gun holder (94) is provided with a clearance hole for the passage of the purging air gun (92) connector tube and the air pipe (91).
7. The shell core machine according to claim 6, characterized in that: A counterweight (11) is fixedly fitted on the air pipe (91) located below the gun base (94), and there is a gap between the counterweight (11) and the gun base (94); the air pipe (91) on the lower side of the counterweight (11) is U-shaped on the outside of the shell core machine base frame (1), and the pipe section connected to the end of the U-shaped pipe section (911) away from the counterweight (11) on the air pipe (91) is horizontally straight on the outside of the shell core machine base frame (1). The end of the U-shaped pipe section (911) away from the counterweight (11) on the air pipe (91) and the horizontal straight pipe section (912) on the air pipe (91) are both fixedly installed on the outside of the shell core machine base frame (1) by pipe clamps (12).