Hydraulic bulging machine for producing automobile fuel tanks

Abstract

The utility model relates to the technical fields of automobile oil tank processing especially relates to a kind of hydraulic bulging machine of production automobile oil tank, when using, staff removes the support of hydraulic bulging head by support assembly, and the oil tank to be bulged is sleeved in the outside of hydraulic bulging head, then support assembly is supported to hydraulic bulging head is operated, then the expansion of hydraulic bulging head is operated by controller, so that hydraulic bulging head is bulged to the oil tank and is operated, unloading assembly is started, so that unloading assembly is bulged to the oil tank on hydraulic bulging head and is unloaded, realize the simplification of structure while guaranteeing processing efficiency, reduce manufacturing cost;Including support frame, support plate and hydraulic bulging head, the left part of support frame top end is provided with support plate, hydraulic bulging head is arranged on the support plate, further include: unloading assembly, it is installed on support frame, for the oil tank unloading after bulging is finished;Support assembly, it is installed on support frame, for supporting hydraulic bulging head.

Description

Technical Field

[0001] This utility model relates to the technical field of automobile fuel tank processing, and in particular to a hydraulic expansion machine for producing automobile fuel tanks. Background Technology

[0002] Hydraulic bulging technology, as an advanced metal plastic forming process, has been widely used in the production of complex hollow components such as automotive fuel tanks. This technology involves applying ultra-high pressure liquid to a tube or plate blank enclosed in a mold, causing it to plastically deform and conform to the mold cavity, thereby obtaining a workpiece of the desired shape. It offers advantages such as high forming accuracy, good workpiece strength, and significant weight reduction.

[0003] In the prior art, to improve production efficiency, hydraulic bulging machines with a dual-station alternating working mode have emerged. For example, Chinese Utility Model Patent CN217142072U discloses a fully automatic hydraulic bulging machine for producing automotive fuel tanks. This machine uses a rotatable support platform with support frames on both sides, allowing one station to perform bulging processing while the other station performs unloading and loading operations. This design aims to reduce equipment waiting time and improve theoretical processing efficiency.

[0004] However, in practical applications, the following inherent defects have been found in this type of dual-station rotary structure: The equipment has a complex structure and high manufacturing cost: To achieve precise switching and positioning between the two workstations, a complete set of devices must be provided, including a rotary drive mechanism (such as a worm gear), multiple sets of telescopic cylinders, baffles, and complex positioning grooves. This results in a large number of parts and a complex mechanical structure, which not only significantly increases the manufacturing cost of the equipment but also places higher demands on the precision of machining and assembly.

[0005] Large footprint and low space utilization: The rotary worktable and its two side support frames require a large amount of rotation and operation space, resulting in a large overall structure and high requirements for the spatial planning of the production site.

[0006] The control process is complex and maintenance costs are high: the coordinated actions of multiple workstations and multiple sets of actuators make the control system complex and difficult to debug. At the same time, a large number of moving parts also means more potential failure points, which increases the workload and cost of daily maintenance and upkeep of the equipment.

[0007] Limited efficiency gains: For situations where production cycle requirements are not extremely stringent, the efficiency gains brought about by complex dual-station mechanisms may not be able to offset the additional investment in cost, space, and maintenance, resulting in poor economic efficiency. Utility Model Content

[0008] To solve the above-mentioned technical problems, this utility model provides a hydraulic expansion machine for producing automobile fuel tanks.

[0009] This utility model discloses a hydraulic bulging machine for producing automobile fuel tanks, comprising a support frame, a support plate, and a hydraulic bulging head. The support plate is located on the top left side of the support frame, and the hydraulic bulging head is located on the support plate. The machine also includes: The unloading assembly, mounted on a support frame, is used to unload the expanded oil tank. The support assembly, mounted on a support frame, supports the hydraulic bulging head. During use, the operator releases the support assembly from the hydraulic bulging head, places the oil tank to be bulged onto the outside of the bulging head, and then operates the support assembly to support the bulging head. The controller then operates the bulging head to expand, thus bulging the oil tank. After bulging, the bulging head shrinks in size, and the bottom of the bulged oil tank is lower than the bottom of the unbulged oil tank. The support assembly is then released, and the unloading assembly is activated to unload the bulged oil tank from the bulging head. This simplifies the structure while ensuring processing efficiency and reducing manufacturing costs.

[0010] Preferably, the unloading assembly includes a servo motor, a support, a lead screw, a guide rod, a movable seat, and an unloading plate. The support frame has a support at its top, the support plate has a servo motor, and the output end of the servo motor has a lead screw. One end of the lead screw is rotatably connected to the support. A guide rod is located between the support plate and the support. The movable seat is threadedly connected to the lead screw and slidably connected to the guide rod. The top of the movable seat has an unloading plate. When the hydraulic expansion head expands the oil tank, the movable seat and the unloading plate are close to the support plate. After the hydraulic expansion head completes the expansion of the oil tank, it shrinks, and the height of the expanded oil tank decreases slightly, with the bottom of the oil tank lower than the top of the unloading plate. Then, the controller starts the servo motor, causing the servo motor to drive the lead screw to rotate. With the cooperation of the guide rod, the lead screw causes the movable seat to move the unloading plate away from the support plate. The movable seat unloads the oil tank, which is fitted outside the hydraulic expansion head, thus improving processing efficiency.

[0011] Preferably, the support assembly includes a base, a rotating shaft, a support plate, a first axle pin, an electric push rod, and a second axle pin. The base is located at the top of the support frame, and a rotating shaft is rotatably mounted inside the base. The support plate is mounted on the rotating shaft. One end of the electric push rod is hinged to the support plate via the first axle pin, and the other end of the electric push rod is hinged to the support frame via the second axle pin. After the oil tank is fitted onto the hydraulic bulging head, the operator operates the controller to extend the electric push rod, thereby making the support plate upright with the cooperation of the rotating shaft. The top of the support plate supports the hydraulic bulging head fitted with the oil tank, improving the stability of the bulging process while preventing deformation of the hydraulic bulging head and extending its service life.

[0012] Preferably, it also includes a slot and a guide wheel. The support plate is provided with a slot, and a guide wheel is rotatably arranged inside the slot. The electric push rod extends to make the support plate upright. When the guide wheel contacts the hydraulic bulging head, it rotates adaptively. When the support plate is upright, the support plate provides stable support for the hydraulic bulging head with the cooperation of the guide wheel, reducing the frictional loss of the hydraulic bulging head.

[0013] Preferably, the support also includes a reinforcing plate, which is provided inside the support. The reinforcing plate is located on the inner side of the support, which strengthens the structural strength of the support and improves its service life.

[0014] Preferably, a protective pad is also included, and the unloading plate is provided with a protective pad; when the moving seat drives the unloading plate to move, the unloading plate performs the unloading operation on the oil tank fitted on the outside of the hydraulic expansion head through the protective pad, so as to avoid frictional wear of the unloading plate on the oil tank.

[0015] Preferably, the support frame also includes adjustable feet, with a set of adjustable feet provided at each of the four corners of the bottom end; the four sets of adjustable feet work together to provide stable support for the support frame and improve stability.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the operator releases the support component from the hydraulic expansion head, places the oil tank to be expanded on the outside of the hydraulic expansion head, then operates the support component to support the hydraulic expansion head, and then operates the hydraulic expansion head to expand through the controller, thereby expanding the oil tank. After the expansion operation is completed, the volume of the hydraulic expansion head shrinks, and at the same time, the bottom of the expanded oil tank is lower than the bottom of the oil tank before expansion. Then the support component releases the support from the hydraulic expansion head, and the unloading component is activated, thereby unloading the expanded oil tank from the hydraulic expansion head. This simplifies the structure while ensuring processing efficiency and reducing manufacturing costs. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is an enlarged structural diagram of the hydraulic bulging head and support plate, etc. Figure 4 This is an enlarged structural diagram of the electric actuator and guide wheel, etc. Figure 5 This is an enlarged structural diagram of servo motors and lead screws, etc. Figure 6 This is a physical image of the utility model.

[0018] The following are labels in the attached diagram: 1. Support frame; 2. Support plate; 3. Hydraulic bulging head; 4. Servo electrode; 5. Support; 6. Lead screw; 7. Guide rod; 8. Moving seat; 9. Unloading plate; 10. Base; 11. Rotating shaft; 12. Support plate; 13. No. 1 shaft pin; 14. Electric push rod; 15. No. 2 shaft pin; 16. Groove; 17. Guide wheel; 18. Reinforcing plate; 19. Protective pad; 20. Adjustable foot; 21. Oil tank. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0020] like Figures 1 to 5 As shown, this utility model discloses a hydraulic bulging machine for producing automobile fuel tanks, comprising a support frame 1, a support plate 2, and a hydraulic bulging head 3. The support plate 2 is disposed on the top left of the support frame 1, and the hydraulic bulging head 3 is disposed on the support plate 2. The machine also includes: The unloading assembly, which is mounted on the support frame 1, is used to unload the oil tank after it has been expanded; A support assembly, which is mounted on the support frame 1, is used to support the hydraulic bulging head 3; like Figure 1 , Figure 2 and Figure 5 As shown, the unloading assembly includes a servo motor 4, a support 5, a lead screw 6, a guide rod 7, a movable seat 8, and an unloading plate 9. The support frame 1 has a support 5 at its top, the support plate 2 has a servo motor 4, the output end of the servo motor 4 has a lead screw 6, one end of the lead screw 6 is rotatably connected to the support 5, the support plate 2 and the support 5 are connected to the guide rod 7, the movable seat 8 is threaded to the lead screw 6 and slidably connected to the guide rod 7, and the top of the movable seat 8 has an unloading plate 9.

[0021] In this embodiment, during use, the operator releases the support assembly from the hydraulic expansion head 3, places the oil tank 21 to be expanded on the outside of the hydraulic expansion head 3, and then operates the support assembly to support the hydraulic expansion head 3. The controller then operates the hydraulic expansion head 3 to expand, thereby expanding the oil tank 21. After the expansion is complete, the volume of the hydraulic expansion head 3 decreases, and the bottom of the expanded oil tank 21 is lower than the bottom of the pre-expansion oil tank 21. The support assembly is then released from its support. The controller starts the servo motor 4, which drives the lead screw 6 to rotate. With the cooperation of the guide rod 7, the lead screw 6 causes the moving seat 8 to move the unloading plate 9 away from the support plate 2. The moving seat 8 unloads the expanded oil tank 21 placed on the outside of the hydraulic expansion head 3. Example 2

[0022] like Figures 1 to 5 As shown, this utility model discloses a hydraulic bulging machine for producing automobile fuel tanks, comprising a support frame 1, a support plate 2, and a hydraulic bulging head 3. The support plate 2 is disposed on the top left of the support frame 1, and the hydraulic bulging head 3 is disposed on the support plate 2. The machine also includes: The unloading assembly, which is mounted on the support frame 1, is used to unload the oil tank after it has been expanded; A support assembly, which is mounted on the support frame 1, is used to support the hydraulic bulging head 3; like Figure 1 , Figure 2 and Figure 5 As shown, the unloading assembly includes a servo motor 4, a support 5, a lead screw 6, a guide bar 7, a movable seat 8, and an unloading plate 9. The support frame 1 is provided with a support 5 at its top, the support plate 2 is provided with a servo motor 4, the output end of the servo motor 4 is provided with a lead screw 6, one end of the lead screw 6 is rotatably connected to the support 5, the guide bar 7 is provided between the support plate 2 and the support 5, the movable seat 8 is threadedly connected to the lead screw 6 and slidably connected to the guide bar 7, and the top of the movable seat 8 is provided with an unloading plate 9. like Figure 2 and Figure 4 As shown, the support assembly includes a base 10, a rotating shaft 11, a support plate 12, a first shaft pin 13, an electric push rod 14, and a second shaft pin 15. The support frame 1 has a base 10 at its top, a rotating shaft 11 is rotatably mounted inside the base 10, and a support plate 12 is mounted on the rotating shaft 11. One end of the electric push rod 14 is hinged to the support plate 12 through the first shaft pin 13, and the other end of the electric push rod 14 is hinged to the support frame 1 through the second shaft pin 15. It also includes a slot 16, a guide wheel 17, a reinforcing plate 18, a protective pad 19, and adjustable feet 20. The support plate 12 is provided with a slot 16, and the guide wheel 17 is rotatably arranged inside the slot 16. The support 5 is provided with a reinforcing plate 18 inside. The unloading plate 9 is provided with a protective pad 19. A set of adjustable feet 20 is provided at each of the four corners of the bottom end of the support frame 1.

[0023] In this embodiment, during use, the operator releases the support of the guide wheel 17 to the hydraulic expansion head 3, places the oil tank 21 to be expanded on the outside of the hydraulic expansion head 3, and extends the electric push rod 14, thereby making the support plate 12 upright. When the guide wheel 17 contacts the hydraulic expansion head 3, it rotates adaptively. When the support plate 12 is upright, the support plate 12 provides stable support for the hydraulic expansion head 3 with the cooperation of the guide wheel 17. Then, the controller operates the hydraulic expansion head 3 to expand, thereby making the hydraulic expansion head 3 support the oil tank 21. 1. After the expansion operation is completed, the volume of the hydraulic expansion head 3 is reduced. At the same time, the bottom of the expansion oil tank 21 is lower than the bottom of the expansion oil tank 21, so that the guide wheel 17 releases its support on the hydraulic expansion head 3. The servo motor 4 is started by the controller, so that the servo motor 4 drives the lead screw 6 to rotate. With the cooperation of the optical rod 7, the lead screw 6 causes the moving seat 8 to move the unloading plate 9 away from the support plate 2. The moving seat 8 unloads the oil tank 21 that is fitted on the outside of the hydraulic expansion head 3 after expansion.

[0024] This utility model discloses a hydraulic expansion machine for producing automobile fuel tanks. The hydraulic expansion head 3 is existing technology and will not be described in detail here. After the fuel tank 21 is expanded, it is necessary to weld the two sides of the fuel tank 21 to the cover plate for sealing using a welding device. The fundamental principle of the hydraulic expansion head is to apply ultra-high pressure liquid to the inside of the preformed part made of metal billet tube blank or plate blank welded in the mold, forcing the billet to undergo plastic deformation and expand outward until it completely fits the inner cavity shape of the mold, thereby obtaining the required hollow part. The hydraulic expansion head 3, servo motor 4 and electric push rod 14 in this utility model of a hydraulic expansion machine for producing automobile fuel tanks are purchased from the market. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0025] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A hydraulic bulging machine for producing automobile fuel tanks, comprising a support frame (1), a support plate (2), and a hydraulic bulging head (3), wherein the support frame (1) has a support plate (2) disposed on its top left side, and the support plate (2) has a hydraulic bulging head (3) disposed on the support plate (2), characterized in that, Also includes: The unloading assembly is mounted on the support frame (1) and is used to unload the oil tank after it has been expanded; A support assembly, which is mounted on a support frame (1), is used to support the hydraulic bulging head (3).

2. The hydraulic expansion machine for producing automobile fuel tanks as described in claim 1, characterized in that, The unloading assembly includes a servo motor (4), a support (5), a lead screw (6), a guide bar (7), a movable seat (8), and an unloading plate (9). The support frame (1) is provided with a support (5) at its top. The support plate (2) is provided with a servo motor (4). The output end of the servo motor (4) is provided with a lead screw (6). One end of the lead screw (6) is rotatably connected to the support (5). A guide bar (7) is provided between the support plate (2) and the support (5). The movable seat (8) is threadedly connected to the lead screw (6) and slidably connected to the guide bar (7). The top of the movable seat (8) is provided with an unloading plate (9).

3. The hydraulic expansion machine for producing automobile fuel tanks as described in claim 1, characterized in that, The support assembly includes a base (10), a rotating shaft (11), a support plate (12), a first axle pin (13), an electric push rod (14), and a second axle pin (15). The support frame (1) is provided with a base (10) at the top. The base (10) is rotatably provided with a rotating shaft (11) inside the base (10). The support plate (12) is provided on the rotating shaft (11). One end of the electric push rod (14) is hinged to the support plate (12) through the first axle pin (13), and the other end of the electric push rod (14) is hinged to the support frame (1) through the second axle pin (15).

4. The hydraulic expansion machine for producing automobile fuel tanks as described in claim 3, characterized in that, It also includes a slot (16) and a guide wheel (17). The support plate (12) is provided with a slot (16), and the guide wheel (17) is rotatably arranged inside the slot (16).

5. A hydraulic expansion machine for producing automobile fuel tanks as described in claim 2, characterized in that, It also includes a reinforcing plate (18), which is provided inside the support (5).

6. A hydraulic expansion machine for producing automobile fuel tanks as described in claim 2, characterized in that, It also includes a protective pad (19), which is provided on the unloading plate (9).

7. A hydraulic expansion machine for producing automobile fuel tanks as described in claim 1, characterized in that, It also includes adjustable feet (20), and a set of adjustable feet (20) is provided at the four corners of the bottom end of the support frame (1).

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