Box pressing system and box pressing process

Abstract

The invention relates to a box pressing system and a box pressing process, belongs to the technical field of casting, and aims to solve the problems of high labor intensity and low operation efficiency of box pressing operators of a box pressing iron, the box pressing system comprises a frame, a lifting device and a transverse moving device, and the lifting device and the transverse moving device are both arranged on the frame. The lifting device is arranged below the transverse moving device; the lifting device is provided with a box pressing piece, and the pressing of the mold core bag is realized by lifting the box pressing piece; and the transverse moving device is used for realizing the movement of the mold core bag in the horizontal direction so as to ensure the accuracy of the position of the box pressing. The all-directional automatic box pressing device realizes all-directional automatic box pressing of automatic transfer, automatic conveying, automatic positioning and automatic pressing of the mold core bag.

Description

Technical Field

[0001] The present invention relates to the field of casting technology, and particularly to a flask clamping device. Background Art

[0002] In traditional sand casting processes, the application of flask weights is a key process step to ensure the forming quality of castings. During the pouring of molten metal, since the dynamic buoyancy generated by the high-temperature molten metal can reach several tons, if the upper flask cannot be effectively fixed, it may cause misalignment of the parting surface and lead to the phenomenon of "molten metal leakage". As a gravity restraint device, the structural design of the flask weight needs to meet the requirements of static equilibrium: usually, an integral structure made of cast steel is adopted, and the weight of a single piece is calculated in the range of 300 - 2000 kg according to the projected area of the casting, and anti-slip patterns are provided at the bottom to increase the friction coefficient of the contact surface. In actual production, workers need to use a crane in cooperation with a special lifting tool for the positioning and installation of the flask weight, and the flask clamping operation time for a single casting accounts for about 15% - 20% of the overall process.

[0003] It should be noted that there are multiple technical bottlenecks in traditional flask clamping processes. Firstly, there are labor intensity and safety risks. When manually handling a 2-ton flask weight, the instantaneous load on the human lumbar spine exceeds 2.3 times the NIOSH safety limit of 3400 N, resulting in an occupational injury rate as high as 0.8 times per thousand working hours. Secondly, there is the problem of process adaptability. For special-shaped castings, special-shaped flask weights need to be customized, and the material utilization rate is less than 60%, resulting in an increase in the cost per ton of steel by about 120 yuan. Thirdly, there are difficulties in quality control. On-site workers adjust the flask clamping position based on experience, which is prone to local pressure concentration leading to sand mold collapse. Statistical data shows that the scrap rate caused thereby accounts for about 3.5%.

[0004] Currently, most semi-automatic flask clamping devices adopt a hydraulic lifting auxiliary system. Although the single lifting time is shortened to 8 minutes (traditionally 15 minutes), three-dimensional space positioning still needs to be carried out manually. The intelligent flask clamping system developed by a German company has achieved three-dimensional laser scanning positioning with a positioning accuracy of ±1.5 mm, but the equipment investment cost exceeds 5 million yuan, which limits the application of small and medium-sized enterprises. It should be noted that a new modular flask clamping technology is emerging. By adopting a standardized unit combination design and cooperating with a magnetic adsorption and quick locking device, the replacement efficiency of the flask weight is increased by 40%, and the material cost is reduced by 35%. Summary of the Invention

[0005] In view of the problems of high labor intensity of flask clamping operation personnel, low operation efficiency, high cost and difficult positioning of semi-automatic flask clamping devices in the above-mentioned use of flask weights, it is necessary to propose a flask clamping system to realize the full-automatic flask clamping operation for casting pouring.

[0006] A flask clamping system includes a frame, a lifting device and a transverse movement device. The lifting device and the transverse movement device are both arranged on the frame, and the lifting device is arranged below the transverse movement device;

[0007] The lifting device is provided with a pressing box member, and the core package is pressed by lifting the pressing box member.

[0008] The transverse movement device is used to move the core package in the horizontal direction to ensure the accuracy of the pressing box position.

[0009] Furthermore, the frame includes a plurality of columns, a plurality of bottom cross beams, a plurality of middle cross beams and a plurality of top cross beams. By arranging the bottom cross beam, the middle cross beam and the top cross beam between two adjacent columns, the overall strength and stability of the frame are improved, so that the frame has good load-bearing capacity.

[0010] Furthermore, the lifting device includes a driving member, a pressing box member and a guide rail; the guide rails are arranged side by side inside the columns, and the pressing box member is slidably connected to the guide rails; one end of the driving member is arranged on the bottom cross beam, and the other end is arranged on the pressing box member to realize the lifting movement of the pressing box member in the vertical direction.

[0011] Furthermore, the transverse movement device includes a roller path, and the roller path is arranged on the middle cross beam to move the position of the core package in the horizontal direction to ensure that the lifting device can compact at the set position and ensure the pressing box effect.

[0012] Further, the pressing box system further includes a control member, and the lifting device and the transverse movement device are both electrically connected to the control member to realize the transmission of information among the three.

[0013] Note: The core package is a sand package to be cast, which is assembled by a sand mold or molding, sand cores and sand boxes, etc., and is used to form the complete contour of the casting.

[0014] The beneficial effects of the technical solution of the present invention: Through the above technical solutions, the all-round automatic pressing box of automatic transfer, automatic conveying, automatic positioning and automatic pressing of the core package is realized. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional schematic diagram of the pressing box system in an implementation manner;

[0016] Among them, 1 - frame; 101 - column; 102 - bottom cross beam; 103 - middle cross beam; 104 - top cross beam; 2 - lifting device; 201 driving member; 202 - pressing box member; 2021 - slider; 2022 - slider connecting member; 2023 - pressing box side beam; 2024 - pressing box cross beam; 2025 - pressing box sliding sleeve; 203 - guide rail; 3 - transverse movement device. Detailed Embodiment

[0017] To more clearly illustrate the technical solution of the present invention, the technical solution of the invention content will be described in detail in conjunction with the accompanying drawings. Obviously, the following descriptions are some typical embodiments of the present invention. For those of ordinary skill in the art, without creative work, other solutions can also be obtained according to these embodiments.

[0018] The present invention aims to solve the problems of low core box pressing efficiency and high working intensity of the core box iron.

[0019] An implementation manner, the core box pressing system includes a frame 1, a lifting device 2 and a transverse movement device 3. The lifting device 2 and the transverse movement device 3 are both arranged on the frame 1, and the lifting device 2 is arranged below the transverse movement device 3;

[0020] The lifting device 2 is provided with a core box pressing member 203, and the core box is pressed by lifting the core box pressing member 203;

[0021] The transverse movement device 3 is used to realize the horizontal movement of the core box to ensure the accuracy of the core box pressing position.

[0022] In this implementation manner, the frame 1 includes four columns 101, four bottom cross beams 102, four middle cross beams 103 and four top cross beams 104. By arranging the bottom cross beam 102, the middle cross beam 103 and the top cross beam 104 between two adjacent columns 101, the overall strength and stability of the frame 1 are improved, so that the frame 1 has good load-bearing capacity.

[0023] In this implementation manner, the lifting device 2 includes a driving member 201, a core box pressing member 203 and a guide rail 203; the guide rail 203 stands side by side inside the column 101, and the core box pressing member 203 is slidably connected to the guide rail 203; one end of the driving member 201 is arranged on the bottom cross beam 102, and the other end is arranged on the core box pressing member 203 to realize the lifting movement of the core box pressing member 203 in the vertical direction. More specifically, for the convenience of setting, each guide rail 203 standing side by side with the column 101 shares the same bottom pad with the column 101 as the basis for fixing on the ground, and the guide rail 203 is arranged inside the working space of the frame 1 to facilitate connection with the core box pressing member 203, that is, to place the core box pressing member 203 in the working space.

[0024] As a further supplement to this implementation manner, the bottom cross beam 102 is arranged between two adjacent guide rails 203, so as to facilitate the driving member 201 to correspond to the core box pressing member 203 and facilitate the lifting of the core box pressing member 203 in the vertical plane.

[0025] As a further supplement to this embodiment, the driving member 201 is a hydraulic cylinder. One end of the hydraulic cylinder is arranged in the middle of the bottom cross beam 102, and the other end of the hydraulic cylinder is arranged on the pressing box member 203 to realize the lifting and lowering of the pressing box member 203.

[0026] As a further supplement to this embodiment, the pressing box member 203 includes a slider 2021, a slider connecting member 2022, a pressing box side beam 2023, a pressing box cross beam 2024, and a pressing box sliding sleeve 2025. The slider 2021 is clamped in the guide rail 203, enabling the pressing box member 203 to reciprocate up and down in the vertical plane along the guide rail 203. The slider connecting member 2022 is also connected to the slider 2021. The slider connecting member 2022 is used to connect the slider 2021 and the pressing box side beam 2023. The pressing box side beam 2023 is arranged in parallel with the middle cross beam 103. The pressing box cross beam 2024 is connected to the pressing box side beam 2023 through the pressing box sliding sleeve 2025, enabling the pressing box cross beam 2024 to reciprocate along the pressing box side beam 2023. More preferably, a pulley is further provided between the pressing box sliding sleeve 2025 and the pressing box side beam 2023, facilitating the position adjustment of the pressing box cross beam 2024.

[0027] In this embodiment, the transverse movement device 3 includes a roller path. The roller path is arranged on the middle cross beam 103 to realize the movement of the core package position in the horizontal direction, ensuring that the lifting device 2 can compact at the set position and guaranteeing the pressing box effect. Specifically, the roller path is arranged on the middle cross beam 103 to receive the core package and perform large-distance position adjustment.

[0028] Another embodiment, as Figure 1 shown, Figure 1 is an embodiment with two sets of the pressing box systems, and the two sets of the pressing box systems are connected in series. Specifically, the two sets of the pressing box systems are connected in series through the transverse movement device 3.

[0029] Another embodiment, the two pressing box systems are connected in series through the bottom cross beam 102 and the middle cross beam 103. And to ensure the stability of the entire working space after being connected in series, reinforcing ribs are further provided between the middle cross beam 103 and the column 101. Specifically, four obliquely arranged reinforcing ribs are provided. The roller path arranged on the transverse movement device 3 passes through the two pressing box systems, forming a pressing box system group, improving the pressing box and pouring efficiency of the core package.

[0030] As a supplement to this embodiment, in order to ensure that the box pressing member 203 can stably lift in the vertical plane, a driving member 201 is provided in the middle of each box pressing side beam 2023 of the box pressing member 203, and all the driving members 201 share a hydraulic driving source. Each driving member 201 is connected to the hydraulic driving source through a pipeline. In the case of symmetric arrangement, each driving member 201 can receive power simultaneously, thus further ensuring the synchronism of the driving force.

[0031] As a supplement to this embodiment, a connecting rod is further provided between the box pressing sliding sleeve 2025 and the box pressing cross beam 2024, so that there is a certain distance between the box pressing cross beam 2024 and the box pressing side beam 2023, which further facilitates the box pressing operation and the compactness of the box pressing.

[0032] As a supplement to this embodiment, the box pressing system further includes a control member. The driving member 201 is connected to the control member. The control member sends a clamping instruction to the driving member 201, and the driving member 201 compresses the core package according to the received clamping instruction to meet the box pressing requirements for casting pouring.

[0033] As a supplement to this embodiment, the clamping instruction includes a clamping pressure. The hydraulic driving source outputs hydraulic pressure according to the received clamping pressure, so as to ensure that the box pressing cross beam 2024 can obtain balanced and specified pressure. Specifically, for different core packages, the control member generates a clamping pressure according to the box pressing pressure given in the casting process, and outputs the hydraulic pressure equal to the clamping pressure to the driving member 201.

[0034] As a supplement to this embodiment, the box pressing cross beam 2024 and the connecting rod casting are connected by bolts. When the box pressing cross beam 2024 is damaged by molten metal due to repeated use, the box pressing cross beam 2024 can be conveniently replaced, thus effectively improving the overall service life of the box pressing system.

[0035] As a supplement to this embodiment, in order to improve the automation level of the box pressing system, a synchronous motor is further provided for the box pressing sliding sleeve 2025. The four box pressing sliding sleeves 2025 are driven by one synchronous motor, thus avoiding the operation of the operator to manually adjust the position of the box pressing cross beam 2024 in a small range. More preferably, the synchronous motor is electrically connected to the control member. By controlling the synchronous motor, the box pressing cross beam 2024 can be conveniently driven to move in a small range to achieve precise adjustment of the box pressing position.

[0036] As a supplement to this embodiment, the mold pressing system further includes a positioning mechanism, which is arranged on the frame 1; the positioning mechanism includes a position sensor and a position clamping member, the position sensor is arranged on the column and is electrically connected to the control member, when the position sensor receives the signal that the core package arrives in place, it sends an in-place signal, then the traversing device 3 stops rotating; at the same time, in order to further ensure that the core package will not shift during mold pressing, the position clamping member rises to clamp and fix the core package to prevent the core package from slipping on the traversing device 3.

[0037] As a supplement to this embodiment, the core package is placed on a tray, and the conveying equipment transports the tray carrying the core package to the mold pressing system. A lock catch that cooperates with the position clamping member is arranged on the tray. After the core package arrives in place, the traversing device 3 stops rotating. After finely adjusting the mold pressing cross beam 2024 to ensure that the mold pressing position meets the given requirements, the lock catch locks the position clamping member to realize the positioning and locking of the position of the core package.

[0038] Another embodiment, the operation process of the mold pressing system includes,

[0039] First step, raise the mold pressing member 203 to the highest position;

[0040] Second step, place the core package on the tray and transport it to the entrance of the mold pressing system by the conveying equipment;

[0041] Third step, the roller path of the traversing device 3 receives the core package from the roller path of the conveying equipment;

[0042] Fourth step, when the core package runs to the given position, the position sensor sends an in-place signal, and the position clamping member fixes the position of the core package;

[0043] Fifth step, according to the mold pressing pressure given by the process, the control member delivers hydraulic pressure to the driving member 201, and the driving member 201 pulls the mold pressing member 203 downward until the clamping pressure meets the process requirements;

[0044] Sixth step, after the pouring is completed, the control member times. When the condensation time meets the time given by the process, the control member issues a mold releasing instruction, the hydraulic drive source withdraws the hydraulic pressure, and the driving member 201 pushes the mold pressing member 203 upward;

[0045] Seventh step, the traversing device 3 outputs the core package with qualified condensation, and the conveying equipment transports the core package with qualified condensation to the cooling area.

[0046] As a supplement to this embodiment, the specific operation of the fourth step includes,

[0047] 1) The core package triggers the in-place switch, and the position sensor sends a core package in-place signal to the control member;

[0048] 2) The control component sends a stop operation instruction to the transverse movement device 3, and the transverse movement device 3 stops operating;

[0049] 3) The control component or the operator finely adjusts the position of the pressure box crossbeam 2024 to make the pressure box crossbeam 2024 in a given position;

[0050] 4) The position clamping piece passes through the transverse movement device 3 and cooperates with the lock on the tray, and the lock locks the position clamping piece to realize the clamping and position locking of the core package.

[0051] Through the implementation of this technical solution, the full-automatic pressure box of the core package to be cast is realized. From receiving to sending out, full automation is achieved, the labor intensity of the operator is reduced, the operation efficiency is improved, and possible human misoperations are prevented.

[0052] The above embodiments are only descriptions of a typical application of the technical solution of the present invention. On the basis of being reasonable and not requiring creative labor, reasonable expansion can also be carried out.

Claims

1. A pressing box device, characterized in that, It includes a frame (1), a lifting device (2), a transverse movement device (3) and a positioning mechanism; the lifting device (2) and the transverse movement device (3) are both arranged on the frame (1), and the lifting device (2) is arranged below the transverse movement device (3), and the positioning mechanism is arranged on the frame (1); The lifting device (2) is provided with a pressing box member (202), and the core package is pressed by lifting the pressing box member (202); The transverse movement device (3) is used to realize the horizontal movement of the core package to ensure the accuracy of the pressing box position; The positioning mechanism is used for positioning and locking the core package to ensure the stability and accuracy of the pressing box; 2. The pressing device according to claim 1, wherein The frame (1) includes a plurality of vertical columns (101), a plurality of bottom cross beams (102), a plurality of middle cross beams (103) and a plurality of top cross beams (104), and the bottom cross beams (102), middle cross beams (103) and top cross beams (104) are arranged between two adjacent vertical columns (101).

3. The pressing device according to claim 2, wherein, The lifting device (2) includes a driving member (201), a pressing box member (202) and a guide rail (203); the guide rail (203) stands side by side on the inner side of the vertical column (101), and the pressing box member (202) is slidably connected to the guide rail (203); one end of the driving member (201) is arranged on the bottom cross beam (102), and the other end is arranged on the pressing box member (202) to realize the lifting movement of the pressing box member (202) in the vertical direction.

4. The pressing device according to claim 2, wherein The transverse movement device (3) includes a roller path, and the roller path is arranged on the middle cross beam (103) to realize the movement of the core package position in the horizontal direction.

5. The pressing device according to claim 3, characterized in that The guide rail (203) and the vertical column (101) share a bottom pad.

6. The pressing device according to claim 3, characterized in that, The bottom cross beam (102) is arranged between two adjacent guide rails (203), and one end of the driving member (201) is arranged on the bottom cross beam (102).

7. The pressing box device according to claim 3, characterized in that, The pressing box member (202) includes a slider (2021), a slider connecting member (2022), a pressing box side beam (2023), a pressing box cross beam (2024), and a pressing box sliding sleeve (2025). The slider (2021) is clamped in the guide rail (203) so that the pressing box member (202) can reciprocate up and down in the vertical plane along the guide rail (203); the slider connecting member (2022) is also connected to the slider (2021), and the slider connecting member (2022) is used to connect the slider (2021) and the pressing box side beam (2023), and the pressing box side beam (2023) is arranged parallel to the middle cross beam (103); the pressing box cross beam (2024) is connected to the pressing box side beam (2023) through the pressing box sliding sleeve (2025) so that the pressing box cross beam (2024) can reciprocate along the pressing box side beam (2023).

8. The pressing box device according to claim 7, wherein, One driving member (201) is arranged in the middle of each pressing box side beam (2023) of the pressing box member (202).

9. The pressing box device according to claim 1, characterized in that The pressing box system further includes a control member, and the lifting device (2) and the transverse movement device (3) are both electrically connected to the control member to realize the information transmission among the three.

10. A pressing process using the pressing system as described in claim 3, characterized in that, including First step: Raise the compressing box part (203) to the highest position; Second step: Place the core package on the tray and convey it to the entrance of the compressing box system by the conveying device; Third step: The roller path of the transverse movement device (3) receives the core package from the roller path of the conveying device; Fourth step: When the core package runs to a given position, the position sensor issues a signal indicating that it has arrived, and the position clamping part fixes the position of the core package; Fifth step: According to the compressing box pressure given by the process, the control part conveys hydraulic pressure to the driving part (201), and the driving part (201) pulls the compressing box part (203) downward until the clamping pressure meets the process requirements; Sixth step: After pouring is completed, the control part times. When the condensation time meets the time given by the process, the control part issues an instruction to release the box, the hydraulic driving source withdraws the hydraulic pressure, and the driving part (201) pushes the compressing box part (203) upward; Seventh step: The transverse movement device (3) outputs the core package with qualified condensation, and the conveying device transports the core package with qualified condensation to the cooling area.

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