Aluminum shell stretching machining tool

Abstract

The invention discloses an aluminum shell stretching machining tool, and belongs to the technical field of aluminum shell stretching, the aluminum shell stretching machining tool comprises a bottom plate, a through opening is formed in the bottom plate, and a fixing frame is fixedly connected to the position, located on the inner side face of the bottom plate, below the through opening; the pressure head is connected with external hydraulic equipment; wherein an outer oil supply part and an inner oil supply part which are used for providing oil liquid during stretching are installed in the fixing frame and the pressing head correspondingly, the outer oil supply part and the inner oil supply part smear high-temperature oil liquid on the inner surface and the outer surface of a stretched workpiece, and the workpiece is heated while lubrication is conducted. And high-temperature oil can be automatically smeared on the inner and outer surfaces of the workpiece in the stretching process. Lubricating can be provided, and a workpiece is heated in the stretching process through oil liquid.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum shell stretching, and in particular to an aluminum shell stretching processing tool. Background Art

[0002] Aluminum shell stretching is a key process in the electronics, automotive, and power battery industries. Existing tooling relies on static oil tank lubrication, making it impossible to dynamically replenish oil during the stretching process. Low levels of oil can easily scratch or even crack the workpiece surface. Excessive oil waste can also increase the difficulty of subsequent cleaning, and residual oil can adhere to the equipment surface, impacting routine maintenance. To address these issues, the present invention provides an aluminum shell stretching tool. Summary of the Invention

[0003] To address the aforementioned technical deficiencies, the present invention provides an aluminum shell stretching tool that, through external and internal oil supply units, automatically applies high-temperature oil to the inner and outer surfaces of the workpiece during the stretching process. This not only provides lubrication but also heats the workpiece during the stretching process.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solution: The present invention provides an aluminum shell stretching processing tool, comprising: A bottom plate, wherein the bottom plate is provided with a through opening, and a fixing frame is fixedly connected to the inner side surface of the bottom plate below the through opening; A pressure head connected to external hydraulic equipment; Among them, the interior of the fixed frame and the pressure head are respectively installed with an external oil supply part and an internal oil supply part for providing oil during stretching, and the external oil supply part and the internal oil supply part apply high-temperature oil to the inner and outer surfaces of the stretched workpiece, heating the workpiece while lubricating it.

[0005] Preferably, the external oil supply unit includes: The plate body is installed inside the fixed frame, and a cavity for storing oil is provided inside the plate body, and oil drain grooves are provided on the side walls around the cavity; The smearing assembly is installed on the inner side walls around the fixed frame and is used to smear the oil discharged from the oil drain groove on the outer surface of the stretched workpiece.

[0006] Preferably, the application assembly comprises: Four conveyor belts are respectively installed on the inner side walls of the fixed frame, and the belt bodies of the conveyor belts are made of stainless steel.

[0007] Preferably, a plurality of support plates for supporting the conveyor belt are fixedly connected to the interior of the fixed frame.

[0008] Preferably, the plate body is slidably installed inside the fixed frame, a sponge layer is fixedly connected to the inside of the cavity, an extrusion plate is provided below the sponge layer, a plurality of fixed blocks are fixedly connected to the lower side of the extrusion plate, and the lower end of the fixed block passes through the plate body and extends to the outside of the plate body.

[0009] Preferably, a limiting rod is provided on the lower side of the plate body, the upper end of the limiting rod passes through the plate body and is fixedly connected to the extrusion plate, the lower end passes through the fixed frame and extends to the outside of the fixed frame, and a reset spring is connected between the lower end of the limiting rod and the lower end surface of the fixed frame.

[0010] Preferably, the limit rod is configured as a hollow structure, and the limit rod is connected to an external oil pump through a refueling pipe.

[0011] Preferably, the internal oil supply portion includes: A sponge frame is fixedly connected to the inner side wall of the inner cavity provided inside the pressure head, and the sponge frame is configured as a structure with two ends through, and a plurality of oil discharge ports are provided on the surrounding side walls of the inner cavity; When the pressure head is pressed downward, the stretched workpiece is driven to move to the lower part of the fixed frame, and the air pressure inside the inner cavity increases, causing the oil adsorbed by the sponge frame to be discharged through the oil drain port.

[0012] Preferably, a through-hole is provided on the top side wall of the inner cavity, and an upper retaining ring and a lower retaining ring are fixedly connected to the upper and lower openings of the through-hole respectively. A piston is slidably connected inside the through-hole, and a support spring is connected between the piston and the lower retaining ring. The piston is connected to external hydraulic equipment.

[0013] Preferably, an oil storage cavity is provided in the top side wall of the inner cavity, the oil storage cavity is adapted to the sponge frame, and a plurality of oil replenishing holes are provided on the bottom side wall of the oil storage cavity.

[0014] The beneficial effects of the present invention are: By providing external and internal oil supply units, this invention automatically applies high-temperature oil to the inner and outer surfaces of the workpiece during the stretching process. This not only provides lubrication but also heats the workpiece during the stretching process, thereby improving surface quality and reducing the risk of material cracking.

[0015] The present invention realizes the oiling operation on the outer surface of the stretched workpiece by setting the conveyor belt. At the same time, the conveyor belt moves synchronously with the deformation of the workpiece, further reducing the friction resistance between the workpiece and the fixed frame, and further improving the surface quality.

[0016] The present invention realizes that when the pressure head is pressed down, the setting of the piston and the through-hole increases the air pressure in the inner cavity, promotes the uniform seepage of the oil adsorbed by the sponge frame, and discharges it to the surface of the pressure head through the oil discharge port, thereby reducing the friction resistance between the workpiece and the pressure head. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic structural diagram of an aluminum shell stretching tooling provided in an embodiment of the present invention.

[0019] Figure 2 It is a cross-sectional view of the fixing frame of the present invention.

[0020] Figure 3 For the present invention Figure 2 Enlarged view of point A.

[0021] Figure 4 It is a structural schematic diagram of the plate body and oil drain groove of the present invention.

[0022] Figure 5 Exploded view of the sponge layer, extrusion plate and cavity of the present invention.

[0023] Figure 6 This is a schematic diagram of the distribution of four conveyor belts of the present invention.

[0024] Figure 7 For the present invention Figure 6 Enlarged view of point B.

[0025] Figure 8 For the present invention Figure 6 Exploded diagram.

[0026] Figure 9 It is a cross-sectional view of the pressure head of the present invention.

[0027] Figure 10 This is an exploded view of the sponge frame and inner cavity of the present invention.

[0028] Figure 11 It is a structural schematic diagram of the oil storage chamber of the present invention.

[0029] Description of reference numerals: 1. Bottom plate, 2. Fixed frame, 3. Pressure head, 4. Plate body, 5. Cavity, 6. Oil drain groove, 7. Conveyor belt, 8. Support plate, 9. Limit rod, 10. Return spring, 11. Sponge layer, 12. Extrusion plate, 13. Fixed block, 14. Sponge frame, 15. Inner cavity, 16. Oil drain port, 17. Through port, 18. Upper retaining ring, 19. Lower retaining ring, 20. Piston, 21. Oil storage chamber, 22. Oil supply hole, 23. Limit block, 24. Support spring. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] The present invention provides an aluminum shell stretching processing tool, such as Figures 1 to 11 shown.

[0032] Example 1: A tool for stretching aluminum shells includes a base plate 1 and a pressing head 3. The base plate 1 is provided with a through hole, and a fixing frame 2 is provided below the through hole. The fixing frame 2 is fixedly connected to the lower side of the base plate 1. The pressing head 3 is driven by external hydraulic equipment.

[0033] An external oil supply part is installed inside the fixed frame 2. During the metal stretching process, the external oil supply part can apply high-temperature oil to the outer surface of the workpiece. These oils can not only play a lubricating role in the stretching process, but also can keep the workpiece within the specified temperature range at all times, thereby improving the surface quality of the workpiece and reducing the possibility of material cracking.

[0034] The external oil supply part includes a plate body 4, which is installed inside the fixed frame 2. A cavity 5 is provided inside the plate body 4, and oil drainage grooves 6 are provided on the side walls around the cavity 5. The interior of the cavity 5 is filled with a sponge layer 11, which can absorb and store high-temperature oil. An extrusion plate 12 is provided below the sponge layer 11, and the extrusion plate 12 is slidably installed inside the cavity 5. A plurality of fixed blocks 13 are fixedly connected to the lower side of the extrusion plate 12. The fixed blocks 13 pass through the plate body 4 and extend to the outside of the plate body 4.

[0035] During stretching, the workpiece is placed on the upper side of the plate body 4, and then the external hydraulic equipment is started to move the pressure head 3 downward. Under the pressure of the pressure head 3, the plate body 4 will press against the lower inner wall of the fixed frame 2, and the fixed block 13 will contact the lower inner wall of the fixed frame 2 before the plate body 4. When the fixed block 13 contacts the lower inner wall of the fixed frame 2, the plate body 4 continues to move downward. At this time, the squeezing plate 12 will squeeze the sponge layer 11, so that the high-temperature oil adsorbed by the sponge layer 11 is discharged through the oil drain groove 6.

[0036] The external oil supply part also includes a coating component. The high-temperature oil discharged through the oil drain groove 6 will flow to the coating component, and then the coating component will be coated on the outer surface of the workpiece, which not only plays a lubricating role during the stretching process, but also can keep the workpiece within the specified temperature range at all times.

[0037] Example 2: On the basis of the first embodiment, in order to further reduce the friction between the workpiece and the inner wall of the fixed frame 2, the coating component can adopt the following settings, specifically as follows: The smearing assembly includes four conveyor belts 7, which are respectively installed on the inner wall of the fixed frame 2, and the material of the conveyor belt 7 is stainless steel. A support plate 8 is provided on the inner side of the belt body of the conveyor belt 7 near the center direction of the fixed frame 2. The support plate 8 is fixedly connected to the inside of the fixed frame 2. During the stretching process, the conveyor belt 7 will move synchronously in the direction of deformation of the workpiece, that is, during the stretching process, the belt body of the conveyor belt 7 on the side facing the center of the fixed frame 2 will move toward the opening direction of the fixed frame 2, thereby reducing the friction between the workpiece and the inner wall of the fixed frame 2 and improving the surface quality of the workpiece. At this time, the support plate 8 can support the belt body of the conveyor belt 7, increase the supporting force of the conveyor belt 7, and make the workpiece stretched according to the specified shape. During the movement of the conveyor belt 7, the oil discharged through the oil drain groove 6 can be smeared on the outer surface of the workpiece.

[0038] Example 3: On the basis of Example 1, in order to facilitate the staff to take out the formed workpiece after stretching, the plate body 4 is slidably installed inside the fixed frame 2, and a limit rod 9 is provided on the lower side of the plate body 4. The upper end of the limit rod 9 passes through the fixed frame 2 and is fixedly connected to the extrusion plate 12. The lower end of the limit rod 9 passes through the fixed frame 2 and extends to the outside of the fixed frame 2 and folds around to form a frustum. A reset spring 10 is fixedly connected between the upper side of the frustum and the lower end face of the fixed frame 2. When no stretching work is performed, under the support of the reset spring 10, the upper side of the plate body 4 is flush with the upper side of the base plate 1. When the stretching is completed, the pressure head 3 moves upward. At this time, under the elastic force of the reset spring 10, the plate body 4 will drive the formed workpiece to rise to the position before stretching, so that the staff can conveniently take out the formed workpiece after stretching.

[0039] The limiting rod 9 is a hollow structure, and the lower end surface of the limiting rod 9 is fixedly connected to a refueling pipe, which is communicated with an external oil pump. The external oil pump can pump high-temperature oil into the cavity 5 above the extrusion plate 12 through the limiting rod 9, so that the high-temperature oil is absorbed by the sponge layer 11.

[0040] Example 4: On the basis of Example 1, in order to heat the workpiece more evenly, an internal oil supply part is provided in the pressure head 3. The internal oil supply part can apply high-temperature oil to the inner surface of the workpiece, thereby reducing the friction between the workpiece and the pressure head 3, thereby improving the surface quality of the workpiece and reducing the possibility of material cracking.

[0041] The internal oil supply part includes a sponge frame 14, which is a square frame with both ends passed through. The sponge frame 14 is fixedly connected to the inner wall of the inner cavity 15 provided inside the pressure head 3. The inner cavity 15 is provided with oil drain ports 16 on all four sides. An oil storage cavity 21 is provided in the top side wall of the inner cavity 15. The shape of the oil storage cavity 21 is adapted to the shape of the sponge frame 14. A plurality of oil replenishing holes 22 are provided on the bottom side wall of the oil storage cavity 21. The oil storage cavity 21 is connected to an external oil pump. The external oil pump can pump high-temperature oil into the interior of the oil storage cavity 21. The high-temperature oil entering the oil storage cavity 21 will be adsorbed by the sponge frame 14 through the oil replenishing holes 22.

[0042] A through hole 17 is provided on the top side wall of the inner cavity 15, and an upper retaining ring 18 and a lower retaining ring 19 are fixedly connected to the upper and lower ends of the inner ring surface of the through hole 17 respectively. A piston 20 is slidably installed inside the through hole 17, and a support spring 24 is provided between the piston 20 and the lower retaining ring 19. The piston 20 is connected to the external hydraulic equipment.

[0043] When the external hydraulic equipment drives the ram 3 to press down, the piston 20 will drive the ram 3 to move downward under the support force of the support spring 24. When the ram 3 is pressed against the workpiece, the piston 20 continues to move downward. At this time, the support spring 24 contracts. At this time, the piston 20 will press the air inside the through-hole 17 into the interior of the inner cavity 15, thereby increasing the air pressure inside the inner cavity 15, and then evenly apply pressure to the inner side surfaces around the sponge frame 14, so that the high-temperature oil adsorbed by the sponge frame 14 is discharged to the surrounding surfaces of the ram 3 through the oil drain port 16. During the tensile deformation of the workpiece, the high-temperature oil discharged through the oil drain port 16 will be smeared on the inner side surface of the workpiece, thereby improving the surface quality of the workpiece and reducing the possibility of material cracking.

[0044] A plurality of limit blocks 23 are fixedly connected to the upper side of the lower retaining ring 19. The arrangement of the plurality of limit blocks 23 can support the piston 20, thereby preventing the support spring 24 from being over-compressed and causing damage.

[0045] When external hydraulic equipment drives the pressure head 3 to rise, the upper retaining ring 18 will limit the piston 20 to prevent the piston 20 from escaping from the through-hole 17, and can also prevent the support spring 24 from being over-stretched and damaged.

[0046] The sponge layer 11 and the sponge frame 14 are arranged so that they can squeeze out the oil absorbed by them when under pressure, and can also absorb some of the excess oil when the pressure disappears, thereby avoiding excessive oil remaining on the surface of the fixed frame 2 and the pressure head 3, resulting in oil waste and affecting the daily maintenance work of the staff.

[0047] At the same time, after absorbing the oil, the sponge layer 11 and the sponge frame 14 can make the oil more evenly distributed, so that when subjected to pressure, the oil can be discharged more evenly and applied to the inner and outer surfaces of the workpiece.

[0048] The specific temperature of the high-temperature oil in the above process should be selected according to different materials. For example, when the material is high-strength aluminum alloy, the temperature should be controlled between 180 degrees Celsius and 240 degrees Celsius.

[0049] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A tool for stretching an aluminum shell, characterized in that: include: A bottom plate (1), wherein the bottom plate (1) is provided with a through opening, and a fixing frame (2) is fixedly connected below the through opening and on the inner side surface of the bottom plate (1); A pressure head (3), wherein the pressure head (3) is connected to external hydraulic equipment; An external oil supply part and an internal oil supply part for supplying oil during stretching are respectively installed inside the fixing frame (2) and inside the pressure head (3), and the external oil supply part and the internal oil supply part apply high-temperature oil to the inner and outer surfaces of the stretched workpiece, heating the workpiece while lubricating it.

2. The aluminum shell stretching tool as claimed in claim 1, characterized in that: The external oil supply unit includes: A plate body (4), the plate body (4) being installed inside the fixed frame (2), the plate body (4) being provided with a cavity (5) for storing oil, and oil drain grooves (6) being provided on the side walls around the cavity (5); A smearing assembly is mounted on the inner side walls around the fixed frame (2) and is used to smear the oil discharged from the oil drain groove (6) onto the outer surface of the stretched workpiece.

3. The aluminum shell stretching tool as claimed in claim 2, characterized in that: The smear component includes: Four conveyor belts (7) are respectively installed on the inner side walls of the fixed frame (2), and the belt body of the conveyor belt (7) is made of stainless steel.

4. The aluminum shell stretching tool as claimed in claim 3, characterized in that: A plurality of support plates (8) for supporting the conveyor belt (7) are fixedly connected to the interior of the fixed frame (2).

5. The aluminum shell stretching tool as claimed in claim 2, characterized in that: The plate body (4) is slidably mounted inside the fixed frame (2); a sponge layer (11) is fixedly connected to the inside of the cavity (5); an extrusion plate (12) is provided below the sponge layer (11); a plurality of fixing blocks (13) are fixedly connected to the lower side of the extrusion plate (12); the lower ends of the fixing blocks (13) pass through the plate body (4) and extend to the outside of the plate body (4).

6. The aluminum shell stretching tool as claimed in claim 5, characterized in that: A limiting rod (9) is provided on the lower side of the plate body (4), the upper end of the limiting rod (9) passes through the plate body (4) and is fixedly connected to the extrusion plate (12), and the lower end passes through the fixed frame (2) and extends to the outside of the fixed frame (2), and a return spring (10) is connected between the lower end of the limiting rod (9) and the lower end surface of the fixed frame (2).

7. The aluminum shell stretching tool as claimed in claim 6, characterized in that: The limiting rod (9) is configured as a hollow structure, and the limiting rod (9) is connected to an external oil pump via a refueling pipe.

8. The aluminum shell stretching tool as claimed in claim 1, characterized in that: The internal oil supply part includes: A sponge frame (14), the sponge frame (14) is fixedly connected to the inner side wall of an inner cavity (15) provided inside the pressure head (3), and the sponge frame (14) is configured as a structure with two ends through, and a plurality of oil discharge ports (16) are provided on the surrounding side walls of the inner cavity (15); When the pressure head (3) is pressed downward, the stretched workpiece is driven to move to the lower part of the fixed frame (2), and the air pressure inside the inner cavity (15) increases, prompting the oil adsorbed by the sponge frame (14) to be discharged through the oil drain port (16).

9. The aluminum shell stretching tool as claimed in claim 8, characterized in that: A through hole (17) is provided on the top side wall of the inner cavity (15), and an upper retaining ring (18) and a lower retaining ring (19) are fixedly connected at the upper and lower openings of the through hole (17), respectively. A piston (20) is slidably connected inside the through hole (17), and a support spring (24) is connected between the piston (20) and the lower retaining ring (19). The piston (20) is connected to an external hydraulic device.

10. The aluminum shell stretching tool as claimed in claim 8, characterized in that: An oil storage cavity (21) is provided in the top side wall of the inner cavity (15), the oil storage cavity (21) is adapted to the sponge frame (14), and a plurality of oil replenishing holes (22) are provided on the bottom side wall of the oil storage cavity (21).

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