A cooling roller device for thin-walled piece electric arc additive manufacturing process

Abstract

The application discloses a cooling roller device for an electric arc additive preparation process of a thin-wall part, relates to the technical field of surface processing of metal parts, and comprises a base, a supporting assembly, a horizontal positioning assembly and a cooling roller plate. The base is provided with a first sliding groove, and the supporting assembly is connected in the first sliding groove. Second sliding grooves and connecting plates are arranged on the two sides of the base, vertical plates are connected in the second sliding grooves, the vertical plates are connected to the connecting plates through the horizontal positioning assembly, the vertical plates on the same side are connected to the two ends of a positioning plate, the middle part of the positioning plate is connected to the cooling roller plate, the cooling roller plate is communicated with an external cooling circulation device, and the supporting assembly and the horizontal positioning assembly are communicated with an external hydraulic system. The application adopts multiple hydraulic cylinders, is stable in operation and accurate in positioning. The cooling roller plate can solve the problems of large grain size, high residual internal stress and low precision of the electric arc additive part during preparation. In addition, multiple sliding grooves are arranged, which play a limiting and guiding role in the positioning process.

Description

Technical Field

[0001] This invention relates to the field of metal surface processing technology, and in particular to a cooling and rolling device for the arc additive manufacturing process of thin-walled parts. Background Technology

[0002] Compared to traditional manufacturing methods, arc additive manufacturing offers advantages such as low equipment cost, high deposition efficiency, low energy consumption, sustainability, and environmental friendliness, leading to its widespread application in industrial fields. During the arc additive manufacturing process, the inability to dissipate heat promptly intensifies heat accumulation within the additive part, resulting in larger grain sizes and significant residual internal stress. This increased grain size and residual internal stress significantly impact the dimensional accuracy, shape accuracy, and mechanical properties of the metal additive part, directly affecting its structural manufacturability and reliability.

[0003] Therefore, how to provide a cooling and rolling device for the arc additive manufacturing process of metal materials that can quickly eliminate the problems of increased grain size, high residual internal stress and low forming accuracy caused by heat accumulation during the additive process, and ensure the structural processability and reliability of the finished metal additive parts, has become a technical problem that urgently needs to be solved by those in the field. Summary of the Invention

[0004] The purpose of this invention is to provide a cooling and rolling device for the arc additive manufacturing process of thin-walled parts, which solves the problems of large grain size, high residual internal stress, low forming accuracy and porosity defects in metal arc additive parts during the manufacturing process.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] The present invention provides a cooling and rolling device for the arc additive manufacturing process of thin-walled parts, comprising a base, a first chute, a support assembly, a connecting plate, a second chute, a vertical plate, a horizontal positioning assembly, a cooling pressure plate, and a positioning plate;

[0007] The base has a first groove longitudinally formed in the middle, and the bottom end of the support assembly is slidably connected to the inside of the first groove. A plurality of connecting plates are symmetrically arranged and connected to the left and right sides of the top surface of the base. A plurality of second grooves are symmetrically arranged on the base and located on both sides of the first groove. The bottom end of the vertical plate is slidably connected to the inside of the second groove. The upper part of the vertical plate is movably connected to the connecting plate through the horizontal positioning assembly. The opposite surfaces of the vertical plates on the same side are connected to the two ends of the positioning plate. The inner middle part of the positioning plate is connected to the cooling pressure plate. The interior of the cooling pressure plate is a cavity, and the cavity is connected to an external cooling circulation device. The support assembly and the horizontal positioning assembly are both connected to an external hydraulic system.

[0008] Preferably, two first slide rods are arranged in parallel inside the first slide groove. The two ends of the first slide rods are fixed to the inner wall of the first slide groove. A first slider is slidably connected to the outside of the first slide rod, and the top surface of the first slider is connected to the support assembly.

[0009] Preferably, the support assembly includes a first hydraulic cylinder and a load plate;

[0010] The non-working end of the first hydraulic cylinder is mounted on the top of the first slider, and the working end of the first hydraulic cylinder is connected to the lower surface of the carrying plate. The first hydraulic cylinder is connected to the hydraulic system through a pipe.

[0011] Preferably, a second slide rod is provided inside the second slide groove, with both ends of the second slide rod fixedly installed on the inner wall of the second slide groove, and a second slider is slidably connected to the outside of the second slide rod, with the top end of the second slider fixedly connected to the bottom end of the vertical plate.

[0012] Preferably, the horizontal positioning assembly includes a second hydraulic cylinder, an outer frame, a spring, and a positioning rod;

[0013] The second hydraulic cylinder and the positioning rod are fixedly connected to both sides of the connecting plate. The non-working end of the positioning rod is movably installed inside the outer frame through the spring. The working end of the positioning rod is connected to the vertical plate. A first positioning hole and a second positioning hole are provided at the connection between the outer frame and the connecting plate. The working end of the second hydraulic cylinder passes through the second positioning hole and the first positioning hole in sequence and is then welded to the non-working end of the positioning rod. The second hydraulic cylinder is connected to the hydraulic system through a pipe.

[0014] Preferably, the cooling plate includes a rotating shaft and a cooling plate connected together;

[0015] One end of the rotating shaft is rotatably connected to the inner center of the positioning plate, and the other end of the rotating shaft is fixedly installed at the outer center of the cooling plate. The cooling plate is in the shape of a circular stepped ladder, and the interior of the cooling plate is a cavity filled with a cooling medium. An inlet and an outlet are provided on the outer surface of the cooling plate, and the cavity is connected to an external cooling circulation device through the inlet and outlet. The cooling plate is located above the carrying plate.

[0016] Preferably, the cooling plate is made of brass.

[0017] Preferably, the cooling medium circulating in the internal cavity of the cooling plate is any one of refrigerant, water, or air.

[0018] Compared with the prior art, the beneficial technical effects of the present invention are as follows:

[0019] This invention discloses a cooling and rolling device for the arc additive manufacturing process of thin-walled parts, comprising a base, a first chute, a support assembly, a connecting plate, a second chute, a vertical plate, a horizontal positioning assembly, a cooling pressure plate, and a positioning plate; the first chute contains a first sliding rod and a first sliding block; the second chute contains a second sliding rod and a second sliding block; the support assembly includes a first hydraulic cylinder and a carrying plate; the horizontal positioning assembly includes a second hydraulic cylinder, an outer frame, a spring, and a positioning rod; the cooling pressure plate includes an integrally formed rotating shaft and a cooling plate.

[0020] 1) It is equipped with multiple hydraulic cylinders. The hydraulic cylinders have a simple structure, large output force, stable and reliable performance, stable operation, convenient maintenance, and accurate positioning without damaging the arc additive parts.

[0021] 2) The cooling plate has a cooling medium circulating inside, which can achieve the functions of cooling and rolling, thereby solving the problems of increased grain size, high residual internal stress and low forming accuracy of electric arc additive parts during processing;

[0022] 3) It is equipped with a first slide and a second slide, which play a role in limiting and guiding during the positioning process, ensuring accurate direction and stable operation during the positioning process.

[0023] This invention discloses a cooling and rolling device for the arc additive manufacturing process of thin-walled parts. It employs multiple hydraulic cylinders, ensuring stable operation, convenient maintenance, and accurate positioning. The cooling platen has a circulating cooling medium inside, enabling both cooling and rolling functions. This addresses the problems of increased grain size, high residual internal stress, and low forming accuracy in arc additive manufacturing. Furthermore, multiple sliding grooves are provided, serving as limiters and guides to ensure accurate orientation and stable operation during positioning. Attached Figure Description

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the cooling and rolling device of the present invention used in the arc additive manufacturing process of thin-walled parts;

[0026] Figure 2 This is a cross-sectional view of the cooling and rolling apparatus of the present invention used in the arc additive manufacturing process of thin-walled parts;

[0027] Figure 3 This is a top view of the cooling and rolling apparatus of the present invention used in the arc additive manufacturing process of thin-walled parts;

[0028] Figure 4 This is a cross-sectional view of the first slide groove of the present invention;

[0029] Figure 5 This is a schematic diagram of the horizontal positioning component of the present invention. Figure 1 ;

[0030] Figure 6 This is a schematic diagram of the horizontal positioning component of the present invention. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the hydraulic system of the present invention.

[0032] Explanation of reference numerals in the attached drawings: 1. Base; 2. First slide groove; 3. Support assembly; 4. Connecting plate; 5. Second slide groove; 6. Vertical plate; 7. Horizontal positioning assembly; 8. Hydraulic system; 9. Cooling pressure plate; 10. Positioning plate;

[0033] 201. The first sliding rod; 202. The first slider;

[0034] 301. First hydraulic cylinder; 302. Carrying plate;

[0035] 401, Second positioning hole;

[0036] 501. Second sliding rod; 502. Second slider;

[0037] 701. Second hydraulic cylinder; 702. Outer frame; 703. Spring; 704. Positioning rod; 705. First positioning hole;

[0038] 801. Hydraulic cylinder; 802. Directional control valve; 803. Oil pump; 804. Relief valve; 805. Oil tank; 806. First pipeline; 807. Second pipeline; 808. Third pipeline; 809. Fourth pipeline; 810. Fifth pipeline; 811. Sixth pipeline;

[0039] 901, Shaft; 902, Cooling plate. Detailed Implementation

[0040] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0041] like Figure 1-7 As shown, a cooling and rolling device for the preparation process of thin-walled parts by electric arc additive manufacturing includes a base 1, a first chute 2, a support assembly 3, a connecting plate 4, a second chute 5, a vertical plate 6, a horizontal positioning assembly 7, a cooling pressure plate 9, and a positioning plate 10.

[0042] The base 1 has a first sliding groove 2 longitudinally formed in the middle, and the bottom end of the support component 3 is slidably connected to the inside of the first sliding groove 2. A plurality of connecting plates 4 are symmetrically arranged and connected to the left and right sides of the top surface of the base 1. A plurality of second sliding grooves 5 are symmetrically arranged on the base 1 and located on both sides of the first sliding groove 2. The bottom end of the vertical plate 6 is slidably connected to the inside of the second sliding groove 5. The upper part of the vertical plate 6 is movably connected to the connecting plate 4 through the horizontal positioning component 7. The opposite surfaces of the vertical plates 6 on the same side are connected to the two ends of the positioning plate 10. The inner middle part of the positioning plate 10 is connected to the cooling pressure plate 9. The interior of the cooling pressure plate 9 is a cavity, and the cavity is connected to an external cooling circulation device. The support component 3 and the horizontal positioning component 7 are both connected to an external hydraulic system 8.

[0043] Specifically, Figure 2-4 As shown, two first slide rods 201 are arranged in parallel inside the first slide groove 2. The two ends of the first slide rods 201 are fixed to the inner wall of the first slide groove 2. A first slider 202 is slidably connected to the outside of the first slide rods 201. The top surface of the first slider 202 is connected to the support assembly 3. The double slide rod arrangement can effectively improve the stability of the first slider 202 when it moves and prevent it from deviating.

[0044] Specifically, such as Figure 4 As shown, the support assembly 3 includes a first hydraulic cylinder 301 and a load plate 302;

[0045] The non-working end of the first hydraulic cylinder 301 is installed on the top of the first slider 202, and the working end of the first hydraulic cylinder 301 is connected to the lower surface of the carrier plate 302. The first hydraulic cylinder 301 is connected to the hydraulic system 8 through a pipe. The hydraulic cylinder converts pressure into power and has the characteristics of simple structure, large output force, stable and reliable performance, stable operation, convenient maintenance and wide application range. The specific size and shape of the carrier plate 302 can be changed according to requirements.

[0046] Specifically, such as Figure 5 As shown, a second slide rod 501 is provided inside the second slide groove 5. The two ends of the second slide rod 501 are fixedly installed on the inner wall of the second slide groove 5. A second slider 502 is slidably connected to the outside of the second slide rod 501. The top end of the second slider 502 is fixedly connected to the bottom end of the vertical plate 6. The second slide groove 5 and the internal structure cooperate to guide the vertical plate 6 and prevent the vertical plate 6 from shifting its position during operation. In another embodiment, the second slider 502 is not provided. Instead, a guide groove is opened at the bottom of the vertical plate 6. The vertical plate 6 directly matches the second slide rod 501 through the guide groove. During operation, the vertical plate 6 moves horizontally along 501 under the push of the horizontal positioning component 7.

[0047] Specifically, such as Figure 5-6 As shown, the horizontal positioning assembly 7 includes a second hydraulic cylinder 701, an outer frame 702, a spring 703, and a positioning rod 704;

[0048] The second hydraulic cylinder 701 and the positioning rod 704 are fixedly connected to both sides of the connecting plate 4. The non-working end of the positioning rod 704 is movably installed inside the outer frame 702 via the spring 703. The working end of the positioning rod 704 is connected to the vertical plate 6. A first positioning hole 705 and a second positioning hole 401 are provided at the connection between the outer frame 702 and the connecting plate 4. The working end of the second hydraulic cylinder 701 passes through the second positioning hole 401 and the first positioning hole 705 in sequence and is then welded to the non-working end of the positioning rod 704. The second hydraulic cylinder 701 is connected to the hydraulic system 8 through a pipe. By pushing the positioning rod 704 with multiple second hydraulic cylinders 701, the horizontal positioning function is completed together, making the positioning more accurate and the working process more stable.

[0049] Specifically, such as Figure 7 As shown, the hydraulic system 8 includes a hydraulic cylinder 801, a directional valve 802, an oil pump 803, a relief valve 804, and an oil tank 805;

[0050] The hydraulic cylinder 801 is provided with an upper oil port and a lower oil port. The upper oil port is connected to the reversing valve 802 through a first pipe 806, and the lower oil port is connected to the reversing valve 802 through a third pipe 808. One end of the second pipe 807 is connected to the reversing valve 802, and the other end of the second pipe 807 is connected to the oil tank 805 through a fifth pipe 810 and a sixth pipe 811, respectively. The fifth pipe 810 is provided with an oil pump 803, and the sixth pipe 811 is provided with an overflow valve 804. The overflow valve 804 is connected to the oil tank 805 through a fourth pipe 809. The oil tank 805 stores hydraulic oil, the oil pump 803 provides power for the flow of hydraulic oil, and the overflow valve 804 is used to prevent the internal pressure of the system from becoming too high.

[0051] Specifically, the cooling plate 9 includes a rotating shaft 901 and a cooling plate 902 connected together;

[0052] One end of the rotating shaft 901 is rotatably connected to the inner center of the positioning plate 10, and the other end of the rotating shaft 901 is fixedly installed at the outer center of the cooling plate 902. The cooling plate 902 is in the shape of a circular stepped ladder, and the interior of the cooling plate 902 is a cavity filled with a cooling medium. An inlet and an outlet are provided on the outer surface of the cooling plate 902, and the cavity is connected to an external cooling circulation device through the inlet and outlet. The cooling plate 902 is located above the carrier plate 302. During operation, the circumferential surface of the cooling plate 902 serves as the working surface, cooling the upper surface of the metal arc additive part. At the same time, the cooling medium circulates inside the cooling plate 902, improving the cooling efficiency.

[0053] Specifically, the cooling platen 9 is made of brass; brass has good thermal conductivity, which can quickly cool the metal arc additive parts; it also has excellent plasticity, is easy to process, and can be set into different shapes to meet the cooling and rolling requirements of metal arc additive parts of different shapes.

[0054] Specifically, the cooling medium circulating in the internal cavity of the cooling plate 902 is any one of refrigerant, water, or air; the corresponding cooling medium is selected according to the specific cooling requirements.

[0055] The usage process of this invention is as follows:

[0056] The cooling plate 902 is connected to an external circulating cooling device, and the substrate is positioned on the upper surface of the carrier plate 302. During the arc additive manufacturing process, for each layer of additive material deposited, the first slider 202 is pushed to move the carrier plate 302 directly below the cooling plate 902. The hydraulic system 8 controls the first hydraulic cylinder 301 to lift the carrier plate 302 to a specified height, and then pushes the first slider 202 to drive the carrier plate 302 to move horizontally back and forth, so that the circumferential surface of the cooling plate 902 rotates on the upper surface of the metal arc additive material, cooling the metal arc additive material while rolling it.

[0057] When the position of the cooling plate 902 needs to be adjusted, the second hydraulic cylinder 701 is controlled by the corresponding hydraulic system 8 to push the positioning rod 705 to move. The positioning rod 705 pushes the vertical plate 6, and the bottom end of the vertical plate 6 slides inside the second slide groove 9. The upper part of the vertical plate 6 pushes the positioning plate 10 to move, thereby driving the cooling pressure plate 9 connected to the positioning plate 10 to move synchronously to the designated position, thus completing the adjustment of the position of the cooling plate 902.

[0058] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0059] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A cooling and rolling device for the arc additive manufacturing process of thin-walled parts, characterized in that: It includes a base (1), a first slide (2), a support assembly (3), a connecting plate (4), a second slide (5), a vertical plate (6), a horizontal positioning assembly (7), a cooling pressure plate (9), and a positioning plate (10); The base (1) has a first groove (2) longitudinally opened in the middle, and the bottom end of the support component (3) is slidably connected to the inside of the first groove (2); multiple connecting plates (4) are symmetrically arranged and connected to the left and right sides of the top surface of the base (1), multiple second grooves (5) are symmetrically arranged on the base (1) and located on both sides of the first groove (2), the bottom end of the vertical plate (6) is slidably connected to the inside of the second groove (5), the upper part of the vertical plate (6) is movably connected to the connecting plate (4) through the horizontal positioning component (7), the opposite surfaces of the vertical plates (6) on the same side are connected to the two ends of the positioning plate (10), the inner middle part of the positioning plate (10) is connected to the cooling pressure plate (9), the inside of the cooling pressure plate (9) is a cavity, the cavity is connected to the external cooling circulation device, and the support component (3) and the horizontal positioning component (7) are both connected to the external hydraulic system (8); Two first slide rods (201) are arranged in parallel inside the first slide groove (2). The two ends of the first slide rods (201) are fixed to the inner wall of the first slide groove (2). A first slider (202) is slidably connected to the outside of the first slide rods (201). The top surface of the first slider (202) is connected to the support assembly (3). The support assembly (3) includes a first hydraulic cylinder (301) and a load plate (302); The non-working end of the first hydraulic cylinder (301) is installed on the top of the first slider (202), and the working end of the first hydraulic cylinder (301) is connected to the lower surface of the carrier plate (302). The first hydraulic cylinder (301) is connected to the hydraulic system (8) through a pipe. The second slide groove (5) is provided with a second slide rod (501) inside. The two ends of the second slide rod (501) are fixedly installed on the inner wall of the second slide groove (5). The second slide rod (501) is slidably connected to a second slider (502) outside. The top end of the second slider (502) is fixedly connected to the bottom end of the vertical plate (6). The horizontal positioning assembly (7) includes a second hydraulic cylinder (701), an outer frame (702), a spring (703), and a positioning rod (704); The second hydraulic cylinder (701) and the positioning rod (704) are fixedly connected to both sides of the connecting plate (4). The non-working end of the positioning rod (704) is movably installed inside the outer frame (702) through the spring (703). The working end of the positioning rod (704) is connected to the vertical plate (6). The connection between the outer frame (702) and the connecting plate (4) is provided with a first positioning hole (705) and a second positioning hole (401). The working end of the second hydraulic cylinder (701) passes through the second positioning hole (401) and the first positioning hole (705) in sequence and is welded to the non-working end of the positioning rod (704). The second hydraulic cylinder (701) is connected to the hydraulic system (8) through a pipe.

2. The cooling and rolling device for the arc additive manufacturing process of thin-walled parts according to claim 1, characterized in that: The cooling plate (9) includes a rotating shaft (901) and a cooling plate (902) connected together; One end of the rotating shaft (901) is rotatably connected to the inner center of the positioning plate (10), and the other end of the rotating shaft (901) is fixedly installed at the outer center of the cooling plate (902). The cooling plate (902) is in the shape of a circular stepped ladder, and the interior of the cooling plate (902) is a cavity filled with a cooling medium. An inlet and an outlet are provided on the outer surface of the cooling plate (902), and the cavity is connected to an external cooling circulation device through the inlet and outlet. The cooling plate (902) is located above the carrier plate (302).

3. The cooling and rolling device for the arc additive manufacturing process of thin-walled parts according to claim 1, characterized in that: The cooling plate (9) is made of brass.

4. The cooling and rolling device for the arc additive manufacturing process of thin-walled parts according to claim 2, characterized in that: The cooling medium circulating in the internal cavity of the cooling plate (902) is any one of the following: refrigerant, water, or air.

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