A mechanism for adjusting the upper frame of a sand shooting machine

Abstract

This utility model provides an upper frame adjustment mechanism for a sand-shooting machine, belonging to the technical field of upper frame adjustment mechanisms for sand-shooting machines. Its structure includes a frame, with a vertically mounted column on the left side of the frame. An upper sand-shooting device is mounted on the upper end of the column, and a lower sand-shooting device is mounted on the lower end of the column. The upper sand-shooting device includes an upper fixed seat fixed to the top of the column, and an upper frame adjustment mechanism is sleeved in the middle of the upper fixed seat, thus forming an upper frame adjustment mechanism for a sand-shooting machine. When adjusting the gap between the lower end of the upper frame and the emptying molding cavity, this upper sand-shooting device uses chain transmission on the worm gear adjustment mechanism and worm gear linkage meshing transmission to synchronously drive four lifting and rotating seats to perform threaded lifting and lowering adjustment on four studs. This achieves the adjustment of the gap between the upper frame, which is fixed to the bottom surface of the lifting sand frame, and the emptying molding cavity, making it highly practical.

Description

Technical Field

[0001] This utility model relates to an upper frame adjustment mechanism for a sand-shooting machine, belonging to the technical field of upper frame adjustment mechanisms for sand-shooting machines. Background Technology

[0002] Sand shooting machines usually refer to core shooting machines or sand shooting molding machines. They are equipment used in the foundry industry to manufacture sand cores or sand molds. Upper and lower sand shooting machines are one type of them.

[0003] The upper frame clearance height of the existing upper sand-shooting device on the upper sand-shooting machine is generally manually fine-tuned, which is difficult, troublesome and time-consuming to operate. In view of the above shortcomings, this utility model proposes an upper frame adjustment mechanism for the upper sand-shooting machine. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an upper frame adjustment mechanism for a sand-shooting machine to solve the existing problems.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: an upper frame adjustment mechanism for an upper and lower sand-shooting machine, the structure of which includes a frame, and a column frame is vertically arranged on the left side of the frame, and an upper sand-shooting device is arranged at the upper end of the column frame, and a lower sand-shooting device is arranged at the lower end of the column frame. The upper sand-shooting device includes an upper fixed seat fixed to the top of the column frame, and an upper frame adjustment mechanism is sleeved in the middle of the upper fixed seat. An upper sand chamber is connected to the top surface of the upper frame adjustment mechanism. A sand inlet switch and a sand inlet funnel are connected to the middle of the top surface of the upper sand chamber. An air inlet sand-shooting valve and an exhaust valve are connected to the front and rear sides of the upper sand chamber. A forming sand-shooting mold frame assembly is movably sleeved at the lower end of the upper frame adjustment mechanism, and the upper end of the forming sand-shooting mold frame assembly is fixed to the upper fixed seat.

[0006] The upper frame adjustment mechanism includes four sets of adjusting studs that are vertically nested on the four sides of the top surface of the upper fixed base. A lifting sand frame is fitted in the middle between the four sets of adjusting studs, and a worm gear adjustment mechanism is fitted on the lifting sand frame. The worm gear adjustment mechanism is meshed and connected to the four sets of adjusting studs to adjust the lifting sand frame. The upper frame is connected to the middle of the bottom surface of the lifting sand frame.

[0007] A further improvement is that the four sets of adjusting studs include studs, and a lifting rotating seat is threadedly connected to the studs, and a stud cover for covering the upper end of the stud is fitted on the top surface of the lifting rotating seat.

[0008] The stud has a lifting external thread in the middle;

[0009] The lifting and rotating seat includes a lifting and pushing seat, in which a worm gear is embedded in the middle and a first bearing for fixing and nesting on the lifting sand frame is embedded at the lower end. The lifting and pushing seat has a lifting internal thread that is threadedly connected to the lifting external thread in the middle.

[0010] A further improvement is that the worm gear adjustment mechanism includes a motor and two worm gear components fixedly mounted on the lifting sand frame. The motor and the two worm gear components are connected by two chains for chain transmission. The motor is equipped with two first chain gears that are connected to the two chains for chain transmission.

[0011] A further improvement is that the two worm gear components include a worm, on which two worm wheels are embedded, meshing with the worm gear disks on the two longitudinal adjusting stud groups, and two rotating fixed seats are sleeved at the front and rear ends of the worm. The front end of the worm is also sleeved with a second chain gear that drives the chain.

[0012] A further improvement is that the molding sand-shooting mold frame assembly includes a mold frame, and two lifting devices fixed on the upper fixed base are provided on the left and right sides of the top surface of the mold frame. A venting molding cavity is opened in the middle of the mold frame, and the lower end of the upper frame is movably sealed inside the venting molding cavity for adjusting the venting height spacing of the venting molding cavity.

[0013] Further improvements are made to the fact that the lower sand-shooting device, upper sand chamber, sand inlet switch, air intake sand-shooting valve, exhaust valve, lifting sand frame and upper frame are all existing technologies, and their structures will not be described in detail here.

[0014] A further improvement is that an air compressor is connected to the other end of the air intake sand-jetting valve.

[0015] A further improvement is that the upper sand-shooting device and the lower sand-shooting device are electrically connected to a control box, which is existing technology and will not be described in detail here.

[0016] The beneficial effects of the utility model are:

[0017] This utility model provides an upper frame adjustment mechanism for an upper and lower sand-shooting machine. It comprises a worm gear adjustment mechanism consisting of a motor, two chains, and two worm gear components, and four adjusting studs consisting of studs, lifting rotating seats, and stud covers, all integrated within a fixed upper base and a lifting sand-shooting frame. This structure allows for adjusting the clearance height of the lower end of the upper frame within the emptying molding cavity. Through chain transmission on the worm gear adjustment mechanism and the worm gear linkage transmission, the four lifting rotating seats are synchronously driven to adjust the threaded lifting of the four studs. The simultaneous lifting of the four lifting rotating seats drives the lifting sand-shooting frame to vertically rise and fall, thus adjusting the clearance height of the upper frame, which is fixed to the bottom of the lifting sand-shooting frame, within the emptying molding cavity. This fine-tuning operation of the clearance height of the upper frame is simple, convenient, time-saving, labor-saving, and highly practical. Furthermore, the worm gear adjustment mechanism uses worm gear meshing transmission, requiring less motor power and effectively saving energy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the upper frame adjustment mechanism for an upper and lower sand-shooting machine according to the present invention.

[0019] Figure 2 This is a schematic diagram of the upward sand-shooting device of this utility model;

[0020] Figure 3 This is a schematic diagram of the upper frame adjustment mechanism of this utility model;

[0021] Figure 4 This is a schematic diagram of the meshing transmission structure of the worm gear adjusting mechanism and the adjusting stud assembly of this utility model;

[0022] Figure 5 This is a schematic diagram of the stud structure of this utility model;

[0023] Figure 6 This is a schematic diagram of the lifting and rotating seat structure of this utility model;

[0024] Figure 7 This is a schematic diagram of the sand-shooting mold frame assembly structure of this utility model. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Please see Figure 1-7This utility model discloses a schematic diagram of an upper frame adjustment mechanism for an upper and lower sand-shooting machine. The structure includes a frame 1, with a vertically mounted column 2 on the left side of the frame 1. An upper sand-shooting device 3 is mounted on the upper end of the column 2, and a lower sand-shooting device 4 is mounted on the lower end of the column 2. The upper sand-shooting device 3 includes an upper fixing seat 31 fixed to the top of the column 2. An upper frame adjustment mechanism 32 is fitted in the middle of the upper fixing seat 31. An upper sand chamber 33 is connected to the top surface of the upper frame adjustment mechanism 32. A sand inlet switch 34 and a sand inlet funnel 35 are connected to the middle of the top surface of the upper sand chamber 33. An air inlet sand-shooting valve 36 and an exhaust valve 37 are connected to the front and rear sides of the upper sand chamber 33. The lower end of the upper frame adjustment mechanism 32 is movably fitted with a sand-shooting mold frame assembly 38, and the upper end of the sand-shooting mold frame assembly 38 is fixedly mounted on the upper fixed seat 31. The upper frame adjustment mechanism 32 includes four adjusting stud assemblies 321 that are vertically nested on the four sides of the top surface of the upper fixed seat 31. A lifting sand frame 322 is fitted in the middle between the four adjusting stud assemblies 321, and a worm gear adjustment mechanism 323 is fitted on the lifting sand frame 322. The worm gear adjustment mechanism 323 and the four adjusting stud assemblies 321 are meshed and connected to each other to adjust the lifting sand frame 322. The upper frame 324 is connected to the middle of the bottom surface of the lifting sand frame 322.

[0027] The four adjusting stud assemblies 321 include studs 3211, and a lifting rotating seat 3212 is threadedly connected to the studs 3211. The top surface of the lifting rotating seat 3212 is fitted with a stud cover 3213 for covering the upper end of the studs 3211. The studs 3211 have a lifting external thread 32111 in the middle. The lifting rotating seat 3212 includes a lifting push-pull seat 32121, and a worm gear 32122 is embedded in the middle of the lifting push-pull seat 32121. The lower end of the lifting push-pull seat 32121 is fitted with a first bearing 32123 for fixing and nesting on the lifting sand frame 322. The lifting push-pull seat 32121 has a lifting internal thread 32124 that is threadedly connected to the lifting external thread 32111 in the middle.

[0028] The worm gear adjustment mechanism 323 includes a motor 3231 and two worm gear components 3233 fixedly mounted on the lifting sand frame 322. The motor 3231 and the two worm gear components 3233 are connected by two chains 3232 for chain transmission. The motor 3231 is equipped with two first chain gears 32311 that are connected to the two chains 3232 for chain transmission.

[0029] The two worm gear components 3233 include a worm 32331, on which two worm wheels 32332 are embedded, which mesh with the worm gear disks 32122 on the two longitudinal adjusting stud groups 321. Two rotating fixed seats 32333 are sleeved at the front and rear ends of the worm 32331. A second chain gear 32334 is also sleeved at the front end of the worm 32331, which drives the chain 3232.

[0030] The molding sand-shooting mold frame assembly 38 includes a mold frame 381, and two lifting devices 382 fixed on the upper fixed base 31 are provided on the left and right sides of the top surface of the mold frame 381. A venting molding cavity 383 is opened in the middle of the mold frame 381. The lower end of the upper frame 324 is movably sealed inside the venting molding cavity 383 for adjusting the venting height spacing of the venting molding cavity 383.

[0031] Working principle:

[0032] When adjusting the venting height spacing of the upper frame 324 within the venting molding cavity 383, the control box is first operated to cause the motor on the worm gear adjustment mechanism 323 to rotate forward and backward. Through the chain transmission of two first chain gears 32311, two chains 3232, and two second chain gears 32334, the two worm gear components 3233 are synchronously driven to rotate on the lifting sand frame 322. The two worm wheels 32332 on each worm gear component 3233 rotate, and through the meshing transmission between the worm wheel 32332 and the worm wheel gear disk 32122, the lifting sand frame 322 on the two longitudinal adjusting stud groups 321 is synchronously driven. The rotating seat 3212 rotates on the first bearing 32123. The reverse rotation of the lifting rotating seat 3212, through the threaded lifting engagement of the lifting external thread 32111 and the lifting internal thread 32124, causes the lifting rotating seat 3212 to threadedly lift and lower with the stud 3211 fixed on the upper fixed seat 31. This drives the upper frame adjustment mechanism 32, the upper sand chamber 33, the sand inlet switch 34, the sand inlet funnel 35, the air inlet sand injection valve 36, and the exhaust valve 37 to be adjusted up and down on the upper fixed seat 31, thereby adjusting the venting height of the lower end of the upper frame 324 in the venting molding cavity 383.

[0033] Furthermore, the high-pressure sand-shooting molding method of the upper sand-shooting device 3 is existing technology and is not related to the technical problem to be solved by this utility model, so it will not be described in detail here.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered illustrative and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An upper frame adjustment mechanism for a top and bottom sand-shooting machine, comprising a frame, wherein a column is vertically arranged on the left side of the frame, and an upper sand-shooting device is arranged at the upper end of the column, and a lower sand-shooting device is arranged at the lower end of the column, characterized in that: The upper sand-shooting device includes an upper fixed seat fixed to the top of the column frame, and an upper frame adjustment mechanism is sleeved in the middle of the upper fixed seat. The top surface of the upper frame adjustment mechanism is connected to an upper sand chamber. The top surface of the upper sand chamber is connected to a sand inlet switch and a sand inlet funnel. The front and rear sides of the upper sand chamber are connected to an air inlet sand-shooting valve and an exhaust valve. The lower end of the upper frame adjustment mechanism is movably sleeved with a forming sand-shooting mold frame assembly, and the upper end of the forming sand-shooting mold frame assembly is fixed to the upper fixed seat. The upper frame adjustment mechanism includes four sets of adjusting studs that are vertically nested on the four sides of the top surface of the upper fixed base. A lifting sand frame is fitted in the middle between the four sets of adjusting studs, and a worm gear adjustment mechanism is fitted on the lifting sand frame. The worm gear adjustment mechanism is meshed and connected to the four sets of adjusting studs to adjust the lifting sand frame. The upper frame is connected to the middle of the bottom surface of the lifting sand frame.

2. The upper frame adjustment mechanism for a top and bottom sand-shooting machine according to claim 1, characterized in that: The four sets of adjusting studs include studs, and a lifting rotating seat is threadedly connected to the studs, and a stud cover for covering the upper end of the stud is fitted on the top surface of the lifting rotating seat; The stud has a lifting external thread in the middle; The lifting and rotating seat includes a lifting and pushing seat, in which a worm gear is embedded in the middle and a first bearing for fixing and nesting on the lifting sand frame is embedded at the lower end. The lifting and pushing seat has a lifting internal thread that is threadedly connected to the lifting external thread in the middle.

3. The upper frame adjustment mechanism for a top and bottom sand-shooting machine according to claim 2, characterized in that: The worm gear adjustment mechanism includes a motor and two worm gear components fixedly mounted on a lifting sand frame. The motor and the two worm gear components are connected by two chains for chain transmission. The motor is equipped with two first chain gears that are connected to the two chains for chain transmission.

4. The upper frame adjustment mechanism for a top and bottom sand-shooting machine according to claim 3, characterized in that: The two worm gear components include a worm, on which two worm wheels are embedded, meshing with the worm gear discs on the two longitudinal adjusting stud groups, and two rotating fixed seats are sleeved at the front and rear ends of the worm. The front end of the worm is also sleeved with a second chain gear that drives the chain with the chain.

5. The upper frame adjustment mechanism for a top and bottom sand-shooting machine according to claim 4, characterized in that: The molding sand-shooting mold frame assembly includes a mold frame, and two lifting devices fixed on the upper fixed base are provided on the left and right sides of the top surface of the mold frame. The middle of the mold frame is provided with a venting molding cavity. The lower end of the upper frame is movably sealed inside the venting molding cavity for adjusting the venting height spacing of the venting molding cavity.

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