Manufacturing method of automobile engine flange plate

Abstract

The invention discloses a manufacturing method of an automobile engine flange plate. The manufacturing method comprises the following steps: (a) placing an outer plate and an inner plate in place; (b) mounting a mold ring; (c) installing a liquid guide device; (d) pouring; and (e) forming. The process is simple, gradually ordered, easy to control, low in operation difficulty, high in safety, large in yield and high in flange plate forming quality.

Description

Technical Field

[0001] The invention belongs to the technical field of flange manufacturing, and in particular relates to a method for manufacturing an automobile engine flange. Background Art

[0002] In automobile engines, flanges are commonly used connecting parts that can be used to connect interfaces and pipe parts.

[0003] When manufacturing flanges, they are usually cast in one piece using a mold, but the mold cavity structure is relatively complex and the cost is relatively high. The outer disk and the inner disk are spot welded, which is prone to problems such as poor welding and damage to the workpiece surface, and has high requirements for operating technology. Summary of the invention

[0004] The purpose of the present invention is to solve the above-mentioned technical problems existing in the prior art and to provide a method for manufacturing an automobile engine flange, which has a simple process, orderly steps, easy control, low operating difficulty, high safety, large output and high flange forming quality.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A method for manufacturing an automobile engine flange, characterized by comprising the following steps:

[0007] (a) Outer and inner trays are in place:

[0008] ① The outer plate and the inner plate are obtained by casting;

[0009] ② Install the outer plate and the inner plate gradually on the mold platform of the pouring device to complete the combination of the inner plate and the outer plate, and form a solder filling groove between the outer plate and the inner plate and the outer ring of the inner plate;

[0010] (b) Installing the mold ring: Align the positioning column at the bottom of the mold ring with the positioning concave hole on the mold platform and insert it so that the mold ring is limited on the mold platform, the mold ring is located outside the inner plate, and the third ring portion on the bottom surface of the mold ring presses the outer plate, forming a material guide channel between the third ring portion and the inner plate;

[0011] (c) Installing the liquid guide: Install the liquid guide on the mold ring, and the liquid guide nozzle on the bottom surface of the liquid guide extends into the liquid storage groove of the mold ring;

[0012] (d) Pouring:

[0013] ① Start the lifting mechanism to drive the liquid distributor down, so that the liquid distributor presses the liquid guide, and the nozzle on the bottom of the liquid distributor extends into the liquid inlet on the top of the liquid guide;

[0014] ② Inject the molten solder into the liquid inlet pipe of the liquid dispenser, the solder continuously fills the inner cavity of the liquid dispenser, flows into the inner cavity of the liquid guide through the nozzle, then flows out through the liquid guide nozzle on the bottom surface of the liquid guide, flows into the liquid storage tank of the mold ring, and then flows downward through the flow hole of the mold ring, flows into the solder filling tank through the material guide channel, so that the solder fills the solder filling tank;

[0015] (e) Molding:

[0016] ① Wait for the solder to cool naturally to room temperature, and after the solder solidifies, form a hard solder layer, weld the inner and outer disks into one, and the flange is formed;

[0017] ② Start the lifting mechanism again to drive the liquid distributor to rise back to its original position, then gradually remove the liquid guide, mold ring, and take out the finished flange.

[0018] Furthermore, in step (a), the outer plate and the inner plate are installed by first placing the outer plate into the die groove on the die table so that the outer plate is limited on the die table, and then placing the inner plate into the central through hole of the outer plate so that the inner plate is limited on the die table. The outer plate cannot move freely in the die groove, thereby limiting the free movement of the inner plate, thereby improving the stability of the combination of the outer plate and the inner plate.

[0019] Furthermore, in step (c), the installation method of the liquid guide is: the installation groove on the bottom surface of the liquid guide is covered with the second ring portion on the top surface of the mold ring, so that the liquid guide is limited on the mold ring. The positioning is convenient, the operation is simple, and it can be used immediately after installation, which is flexible and convenient.

[0020] Furthermore, in step (b), when installing the mold ring, a release agent is evenly sprayed on the bottom surface of the mold ring and the surface of the third ring portion. The release agent can lubricate the contact interface between the finished flange and the mold ring and the third ring portion, facilitating subsequent demoulding and separation.

[0021] Further, in step (a), the pouring device includes a frame, a mold platform, a liquid distributor and a lifting mechanism are provided on the frame, the output end of the lifting mechanism is connected to the liquid distributor, the liquid distributor is located above the mold platform, nozzles are evenly distributed on the bottom surface of the liquid distributor, a mold groove and a positioning recessed hole are provided on the mold platform, and the positioning recessed holes are symmetrically distributed with the mold groove as the center; a positioning column corresponding to the positioning recessed hole is provided on the bottom surface of the mold ring, a first ring portion and a second ring portion are respectively provided on the top surface of the mold ring, the second ring portion is located outside the first ring portion, a liquid storage tank is formed between the first ring portion and the second ring portion, a flow hole is provided in the liquid storage tank, and a third ring portion is provided on the bottom surface of the mold ring, and the third ring portion is located outside the flow hole; an installation groove and a liquid guide nozzle are provided on the bottom surface of the liquid guide, the liquid guide nozzle is connected to the inner cavity of the liquid guide, the installation groove corresponds to the second ring portion, the liquid guide nozzle corresponds to the liquid storage groove, and a liquid inlet communicating with the inner cavity of the liquid guide is provided on the top surface of the liquid guide, and the liquid inlet corresponds to the nozzle.

[0022] Furthermore, an L-shaped fixing frame is provided on the frame, and the lifting mechanism is provided on the L-shaped fixing frame, which improves the stability of the lifting mechanism during operation; the output end of the lifting mechanism is connected to a U-shaped bracket, and the U-shaped bracket is connected to the dispenser. The U-shaped bracket can not only transmit the push and pull force of the lifting mechanism, but also play a good transition connection role, which is convenient for the disassembly and assembly of the dispenser.

[0023] Furthermore, in step (a), the outer disk is provided with a central through hole, the inner disk is provided with an outer ring portion, the outer ring portion is adapted to the central through hole, the height of the outer ring portion is less than the depth of the central through hole, and the thickness of the inner disk is greater than the thickness of the outer disk.

[0024] The present invention has the following beneficial effects due to the adoption of the above technical solution:

[0025] 1. The liquid distributor presses down the liquid guide, the liquid guide presses down the mold ring, and the mold ring presses down the outer disk through the third ring part, from top to bottom, step by step, which improves the installation stability of the outer disk, the mold ring, and the liquid guide. It is one-step, reliable and effective; the liquid guide closes the opening of the liquid storage tank, and a closed material guide channel is formed between the third ring part and the inner disk. The third ring part is in close contact with the outer disk, and the gap is very small to prevent subsequent solder from seeping out from the gap.

[0026] 2. During the pouring process, the solder first enters the inner cavity of the liquid distributor, flows into the inner cavity of the liquid guide through the nozzle, then flows out through the liquid guide nozzle, flows into the liquid storage tank of the mold ring, and then flows downward through the flow hole of the mold ring, and flows into the solder filling tank through the material guide channel, so that the solder fills the solder filling tank.

[0027] The liquid distributor evenly distributes the solder to each liquid guide, which guides the pouring downward. Multiple stations pour at the same time, with high pouring efficiency. Multiple flanges can be obtained at one time, with large output. No single pouring is required, which reduces the difficulty and work intensity of pouring. In the assembled enclosed space, the solder flows to the solder filling slot according to the designed flow path. Compared with the traditional solder filling method, it is not restricted by the limited operating space, which not only reduces the difficulty of solder filling and makes the operation simpler, but also improves the welding strength and safety, and the pouring process is smooth and splash-free. The material guiding channel can ensure that the solder has sufficient filling amount, so that the hard solder layer exceeds the solder filling slot, increasing the contact area between the hard solder layer and the inner and outer disks, thereby improving the connection strength between the hard solder layer and the inner and outer disks, thereby ensuring the molding quality of the flange. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The present invention will be further described below in conjunction with the accompanying drawings:

[0029] Figure 1 It is a structural schematic diagram of the pouring device in the present invention;

[0030] Figure 2 for Figure 1 Left view of;

[0031] Figure 3 It is a structural schematic diagram of the mold platform in the present invention;

[0032] Figure 4 It is a structural schematic diagram of the connection between the stroke cylinder and the liquid distributor in the present invention;

[0033] Figure 5 It is a structural schematic diagram of the bottom of the liquid guide device in the present invention;

[0034] Figure 6 It is a structural schematic diagram of the bottom of the mold ring in the present invention;

[0035] Figure 7 It is a structural schematic diagram of the mold ring in the present invention;

[0036] Figure 8 It is a structural schematic diagram of the outer plate and inner plate combination in the present invention;

[0037] Fig. 9 It is a schematic diagram of the structure of the inner plate in the present invention;

[0038] Fig.10 It is a structural schematic diagram of the finished flange of the present invention.

[0039] In the figure: 1-outer plate; 2-inner plate; 3-center through hole; 4-center screw hole; 5-outer ring; 6-frame; 7-mold table; 8-liquid distributor; 9-stroke cylinder; 10-L-shaped fixing frame; 11-U-shaped bracket; 12-nozzle; 13-mold groove; 14-positioning recessed hole; 15-mold ring; 16-extension part; 17-positioning column; 18-first ring part; 19-second ring part; 20-liquid storage tank; 21-circulation hole; 22-third ring part; 23-liquid guide; 24-installation groove; 25-liquid guide nozzle; 26-liquid inlet; 27-solder filling tank; 28-hard solder layer; 29-liquid inlet pipe. DETAILED DESCRIPTION

[0040] A method for manufacturing an automobile engine flange comprises the following steps:

[0041] (a) Outer and inner trays are in place:

[0042] ① The outer disk 1 and the inner disk 2 are respectively obtained by casting, and the obtained castings have the advantages of high mechanical properties, high dimensional accuracy, good quality, etc.

[0043] like Figure 8 and Fig. 9 As shown, the outer disk 1 is provided with a central through hole 3, the inner disk 2 is provided with a central screw hole 4, the outer side of the inner disk 2 is provided with an outer ring portion 5, the outer ring portion 5 is adapted to the central through hole 3, the height of the outer ring portion 5 is smaller than the depth of the central through hole 3, and the thickness of the inner disk 2 is greater than the thickness of the outer disk 1.

[0044] ② If Figures 1 to 7 As shown, the pouring device includes a frame 6, on which a mold platform 7, a liquid distributor 8 and a lifting mechanism are arranged. The lifting mechanism can adopt a stroke cylinder 9. An L-shaped fixing frame 10 is arranged on the frame 6. The stroke cylinder 9 is fixed on the L-shaped fixing frame 10, which improves the stability of the lifting mechanism during operation. The output end of the stroke cylinder 9 is connected to a U-shaped bracket 11, which is fixedly connected to the liquid distributor 8. The U-shaped bracket 11 can not only transmit the push and pull force of the stroke cylinder 9, but also play a good transition connection role, which is convenient for the disassembly and assembly of the liquid distributor 8.

[0045] The liquid distributor 8 is located above the mold platform 7, and nozzles 12 are evenly distributed on the bottom surface of the liquid distributor 8. A mold groove 13 and a positioning recessed hole 14 are provided on the mold platform 7. The positioning recessed holes 14 are symmetrically distributed with the mold groove 13 as the center. An extension portion 16 is provided on the mold ring 15, and a positioning column 17 corresponding to the positioning recessed hole 14 is provided on the bottom surface of the extension portion 16. The positioning column 17 cooperates with the positioning recessed hole 14 to realize the positioning and installation of the mold ring 15 on the mold platform 7, thereby reducing the difficulty of positioning.

[0046] A first ring portion 18 and a second ring portion 19 are respectively provided on the top surface of the mold ring 15. The second ring portion 19 is located outside the first ring portion 18. A liquid storage tank 20 is formed between the first ring portion 18 and the second ring portion 19. A flow hole 21 is provided in the liquid storage tank 20. A third ring portion 22 is provided on the bottom surface of the mold ring 15. The inner diameter of the third ring portion 22 is greater than the outer diameter of the inner disk 2. The third ring portion 22 is located outside the flow hole 21.

[0047] A mounting groove 24 and a liquid conducting nozzle 25 are provided on the bottom surface of the liquid conductor 23. The liquid conducting nozzle 25 is located in the mounting groove 24. The liquid conducting nozzle 25 is connected to the inner cavity of the liquid conductor 23. The mounting groove 24 corresponds to the second ring portion 19. The liquid conducting nozzle 25 corresponds to the liquid storage tank 20. A liquid inlet 26 connected to the inner cavity of the liquid conductor 23 is provided on the top surface of the liquid conductor 23. The liquid inlet 26 corresponds to the nozzle 12.

[0048] First, place the outer disk 1 into the mold groove 13 on the mold table 7, so that the outer disk 1 is limited on the mold table 7, and then install the inner disk 2 into the central through hole 3 of the outer disk 1. The outer ring portion 5 is in close contact with the inner wall of the central through hole 3, and the friction force is large. The inner disk 2 cannot loosen freely, so that the inner disk 2 is limited on the mold table 7, completing the combination of the inner disk 2 and the outer disk 1, and a solder filling groove 27 is formed between the outer disk 1 and the inner disk 2, and the outer ring portion 5 of the inner disk 2.

[0049] The outer plate 1 cannot move freely in the mold groove 13, thereby limiting the free movement of the inner plate 2, thereby improving the stability of the combination of the outer plate 1 and the inner plate 2, facilitating positioning, simple installation, and low operating difficulty.

[0050] (b) Installing the mold ring 15: Spray a release agent evenly on the bottom surface of the mold ring 15 and the surface of the third ring portion 22. The release agent comprises the following components by weight: 10-12 parts of talcum powder, 5-7 parts of liquid paraffin, 10-12 parts of silicone oil, and 12-15 parts of water. The release agent can lubricate the contact interface between the finished flange and the mold ring 15 and the third ring portion 22, facilitating subsequent demolding and separation.

[0051] The positioning column 17 is aligned with the positioning recessed hole 14 on the mold platform 7 and inserted so that the mold ring 15 is limited on the mold platform 7. The mold ring 15 is located outside the inner plate 2, thereby realizing the positioning installation of the mold ring 15 on the mold platform 7, reducing the positioning difficulty. The mold ring 15 cannot rotate freely, and the installation stability is high.

[0052] At this time, the third ring portion 22 presses down on the outer plate 1 to limit the outer plate 1 from moving upward, and a closed material guiding channel is formed between the third ring portion 22 and the inner plate 2 .

[0053] (c) Installing the liquid guide 23: The installation groove 24 on the bottom surface of the liquid guide 23 is put on the second ring part 19, so that the liquid guide 23 is limited on the mold ring 15, which is convenient for positioning, simple to operate, and can be used at any time after installation, which is flexible and convenient.

[0054] At this time, the liquid guide 23 closes the opening of the liquid storage tank 20, and the liquid guide nozzle 25 extends into the liquid storage tank 20 of the mold ring 15.

[0055] (d) Pouring:

[0056] ① Start the stroke cylinder 9 to drive the liquid distributor 8 to descend, so that the liquid distributor 8 presses the liquid guide 23, and the nozzle 12 extends into the liquid inlet 26.

[0057] The liquid distributor 8 presses down the liquid guide 23, the liquid guide 23 presses down the mold ring 15, and the mold ring 15 presses down the outer disk 1 through the third ring portion 22, from top to bottom, step by step, which improves the installation stability of the outer disk 1, the mold ring 15, and the liquid guide 23, and is completed in one step, reliable and effective. The third ring portion 22 is in close contact with the outer disk 1, and the gap is very small, which prevents subsequent solder from seeping out from the gap.

[0058] ② Inject the molten solder into the liquid inlet pipe 29 of the liquid distributor 8, the solder continuously fills the inner cavity of the liquid distributor 8, flows into the inner cavity of the liquid guide 23 through the nozzle 12, then flows out through the liquid guide nozzle 25, flows into the liquid storage tank 20 of the mold ring 15, and then flows downward through the flow hole 21 of the mold ring 15, flows into the solder filling tank 27 through the material guide channel, so that the solder fills the solder filling tank 27, and wipes out the solder overflowing from the outer plate 1. The solder used is the solder produced by melting the brazing wire.

[0059] The liquid distributor 8 distributes the solder evenly to each liquid guide 23, which guides the pouring downward. Multiple stations pour at the same time, with high pouring efficiency. Multiple flanges can be obtained at one time, with high output. No single pouring is required, which reduces the pouring difficulty and work intensity.

[0060] (e) Molding:

[0061] ① Wait for the solder to cool naturally to room temperature, and then solidify to form a brazing layer 28, and weld the inner disk 2 and the outer disk 1 into one piece, and the flange is formed. Fig.10 shown.

[0062] In the assembled enclosed space, the solder flows to the solder filling groove 27 according to the designed flow path. Compared with the traditional solder filling method, it is not restricted by the limited operating space, which not only reduces the difficulty of solder filling and makes the operation simpler, but also improves the welding strength and safety, and the pouring process is smooth and splash-free. The material guide channel can ensure that the solder has a sufficient filling amount, so that the hard solder layer 28 exceeds the solder filling groove 27, thereby increasing the contact area between the hard solder layer 28 and the inner disk 2 and the outer disk 1, thereby improving the connection strength between the hard solder layer 28 and the inner disk 2 and the outer disk 1, thereby ensuring the molding quality of the flange.

[0063] ② Start the stroke cylinder 9 again to drive the liquid distributor 8 to rise back to its original position, then gradually remove the liquid guide 23 and the mold ring 15, and then remove the finished flange.

[0064] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the present invention to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the present invention.

Claims

1. A method for manufacturing an automobile engine flange, characterized in that The steps include: (a) Outer and inner trays are in place: ① The outer plate and the inner plate are obtained by casting; ② Install the outer plate and the inner plate gradually on the mold platform of the pouring device to complete the combination of the inner plate and the outer plate, and form a solder filling groove between the outer plate and the inner plate and the outer ring of the inner plate; (b) Installing the mold ring: Align the positioning column at the bottom of the mold ring with the positioning concave hole on the mold platform and insert it so that the mold ring is limited on the mold platform, the mold ring is located outside the inner plate, and the third ring portion on the bottom surface of the mold ring presses the outer plate, forming a material guide channel between the third ring portion and the inner plate; (c) Installing the liquid guide: Install the liquid guide on the mold ring, and the liquid guide nozzle on the bottom surface of the liquid guide extends into the liquid storage groove of the mold ring; (d) Pouring: ① Start the lifting mechanism to drive the liquid distributor down, so that the liquid distributor presses the liquid guide, and the nozzle on the bottom of the liquid distributor extends into the liquid inlet on the top of the liquid guide; ② Inject the molten solder into the liquid inlet pipe of the liquid dispenser, the solder continuously fills the inner cavity of the liquid dispenser, flows into the inner cavity of the liquid guide through the nozzle, then flows out through the liquid guide nozzle on the bottom surface of the liquid guide, flows into the liquid storage tank of the mold ring, and then flows downward through the flow hole of the mold ring, flows into the solder filling tank through the material guide channel, so that the solder fills the solder filling tank; (e) Molding: ① Wait for the solder to cool naturally to room temperature, and after the solder solidifies, form a hard solder layer, weld the inner and outer disks into one, and the flange is formed; ② Start the lifting mechanism again to drive the liquid distributor to rise back to its original position, then gradually remove the liquid guide, mold ring, and take out the finished flange.

2. The method for manufacturing an automobile engine flange according to claim 1, characterized in that: The installation method of the outer plate and the inner plate in step (a) is: first put the outer plate into the mold groove on the mold table so that the outer plate is limited on the mold table, and then install the inner plate into the central through hole of the outer plate so that the inner plate is limited on the mold table.

3. The method for manufacturing an automobile engine flange according to claim 1, characterized in that: The installation method of the liquid guide in step (c) is: the installation groove on the bottom surface of the liquid guide is covered with the second ring part on the top surface of the mold ring, so that the liquid guide is limited on the mold ring.

4. The method for manufacturing an automobile engine flange according to claim 1, characterized in that: When installing the mold ring in step (b), a mold release agent is evenly sprayed on the bottom surface of the mold ring and the surface of the third ring portion.

5. The method for manufacturing an automobile engine flange according to claim 1, characterized in that: The pouring device in step (a) comprises a frame, a mold platform, a liquid distributor and a lifting mechanism are provided on the frame, an output end of the lifting mechanism is connected to the liquid distributor, the liquid distributor is located above the mold platform, nozzles are evenly distributed on the bottom surface of the liquid distributor, a mold groove and positioning concave holes are provided on the mold platform, and the positioning concave holes are symmetrically distributed with the mold groove as the center; A positioning column corresponding to the positioning concave hole is provided on the bottom surface of the mold ring, a first ring portion and a second ring portion are respectively provided on the top surface of the mold ring, the second ring portion is located outside the first ring portion, a liquid storage groove is formed between the first ring portion and the second ring portion, a flow hole is provided in the liquid storage groove, and a third ring portion is provided on the bottom surface of the mold ring, and the third ring portion is located outside the flow hole; The bottom surface of the liquid guide device is provided with a mounting groove and a liquid guide nozzle, the liquid guide nozzle is connected with the inner cavity of the liquid guide device, the mounting groove corresponds to the second ring portion, the liquid guide nozzle corresponds to the liquid storage tank, and the top surface of the liquid guide device is provided with a liquid inlet connected with the inner cavity of the liquid guide device, and the liquid inlet corresponds to the nozzle.

6. The method for manufacturing an automobile engine flange according to claim 5, characterized in that: An L-shaped fixing frame is arranged on the frame, the lifting mechanism is arranged on the L-shaped fixing frame, the output end of the lifting mechanism is connected with a U-shaped bracket, and the U-shaped bracket is connected with the liquid dispenser.

7. The method for manufacturing an automobile engine flange according to claim 1, characterized in that: In step (a), the outer disk is provided with a central through hole, the inner disk is provided with an outer ring portion, the outer ring portion is adapted to the central through hole, the height of the outer ring portion is smaller than the depth of the central through hole, and the thickness of the inner disk is greater than the thickness of the outer disk.

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