Stamping device for automobile fuel tank bottom shell

Abstract

The invention belongs to the technical field of oil tank bottom shell machining, and discloses an automobile oil tank bottom shell stamping device which comprises a vertical frame, a fixed seat and a movable seat, and the fixed seat and the movable seat are installed on the vertical frame. An upper die base is rotationally installed on the fixing base, and N upper female dies are fixed to the peripheral face of the upper die base. A lower die base is rotationally installed on the movable base, a negative pressure generating device is installed in the lower die base, N lower male dies are fixed to the peripheral face of the lower die base and matched with the N upper female dies in a one-to-one mode, and a plurality of negative suction holes are formed in the surface of each lower male die. In conclusion, the oil tank bottom shell punching die is provided with the upper die base and the lower die base which can rotate, the N upper female dies and the N lower male dies which are matched one by one are correspondingly arranged on the upper die base and the lower die base, and therefore flexible punching of oil tank bottom shells of multiple specifications can be effectively achieved; in addition, the lower male die is arranged to be of a porous negative suction structure, and therefore automatic feeding of raw materials can be achieved conveniently.

Description

Technical Field

[0001] The invention belongs to the technical field of oil tank bottom shell processing, and in particular relates to a stamping device for an automobile oil tank bottom shell. Background Art

[0002] With the rapid development of people's lives, cars are used more and more widely in life. The bottom shell of the automobile fuel tank is an indispensable component of the automobile fuel tank. The bottom shell of the fuel tank mainly supports, fixes and seals the fuel tank. At present, the bottom shell of the fuel tank is usually made by stamping, so the stamping process of the bottom shell of the fuel tank is very important.

[0003] Existing stamping devices usually adopt a single-die stamping structure, that is, one stamping device can only stamp and process one type of fuel tank bottom shell, which has a small application range and large processing limitations. Summary of the invention

[0004] In view of this, in order to solve the problems raised in the above background technology, the purpose of the present invention is to provide a stamping device for a bottom shell of an automobile fuel tank to solve the existing problems.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A stamping device for a bottom shell of an automobile oil tank comprises a stand and a fixed seat and a movable seat mounted on the stand;

[0007] An upper die seat is rotatably mounted on the fixed seat, and N upper concave dies are fixed on the outer circumferential surface of the upper die seat;

[0008] A lower die seat is rotatably mounted on the movable seat, and a negative pressure generating device is installed inside the lower die seat. N lower punches are fixed on the outer circumferential surface of the lower die seat. The N lower punches are matched with the N upper concave dies one by one, and a plurality of negative suction holes are opened on the surface of each lower punch.

[0009] Preferably, a hydraulic lifting device is connected between the fixed seat and the movable seat.

[0010] Preferably, the punching device further comprises a base fixed to the bottom of the stand, and a feeding mechanism is installed on the base.

[0011] Preferably, the feeding mechanism comprises a feeding conveyor belt and a discharging conveyor belt which are sequentially arranged from top to bottom, and two feeding conveyor belts are symmetrically arranged so that a discharging gap is formed between the two feeding conveyor belts.

[0012] Preferably, two groups of adjusting cylinders are symmetrically fixed on the base, the telescopic ends of the two groups of adjusting cylinders are connected to limiting members, and the two groups of limiting members are respectively matched with two feeding conveyor belts.

[0013] Preferably, a sliding seat is slidably mounted on the stand, the width of the sliding seat is greater than the width of the moving seat, and the sliding seat is connected to the bottom of the moving seat through an elastic telescopic rod.

[0014] Preferably, a first gear coaxially matched with the lower mold base is installed on the movable seat, a second gear capable of meshing with the first gear is rotatably installed on the sliding seat, and a rack meshing with one side of the second gear is installed on the vertical frame.

[0015] Preferably, a limit frame capable of meshing with the first gear is slidably mounted on the movable seat, a spring is connected between the limit frame and the movable seat, and when the bottom of the limit frame abuts against the top of the sliding seat, the limit frame disengages from the first gear.

[0016] Preferably, a third gear coaxially matched with the upper mold base is installed on the fixed base, and the third gear is meshingly connected with the rack.

[0017] Preferably, the rack is slidably connected to the stand, and a lifting cylinder for driving the rack to lift and slide is fixed on the top of the stand.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) The present invention is provided with a rotatable upper die base and a lower die base, and N one-to-one matched upper concave dies and lower punches are correspondingly arranged on the upper die base and the lower die base, thereby effectively realizing flexible stamping of oil tank bottom shells of various specifications; and the lower punch is set as a multi-porous negative suction structure, so as to facilitate the automatic loading of raw materials.

[0020] (2) A feed conveyor belt and a discharge conveyor belt are arranged from top to bottom, and two feed conveyor belts are symmetrically arranged so that a discharge gap is formed between the two feed conveyor belts, and the size of the discharge gap can be adjusted based on the movement of the two feed conveyor belts, so that the overall device can be flexibly applied to the automatic feeding and discharging of raw materials and oil tank bottom shells of different specifications.

[0021] (3) A first gear, a third gear and a liftable rack are provided to realize the rotational drive of the lower die base and the upper die base, and the first gear is indirectly meshed with the rack through the second gear, thereby ensuring that the lower die base can independently rotate 180° when it is lifted or lowered for material collection, and can remain stationary when it is lifted or lowered for stamping. When the upper die and the lower punch are adjusted in linkage, the upper die base and the lower die base can rotate in linkage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention;

[0023] Figure 2 It is a schematic diagram of the structure of the assembly of the moving seat, the first gear and the limiting frame in the present invention;

[0024] Figure 3 for Figure 1 A in the enlarged view;

[0025] Figure 4 for Figure 2 The enlarged view of point B in the figure;

[0026] In the figure: stand 1; fixed seat 2; upper die seat 21; upper concave die 22; movable seat 3; lower die seat 31; lower punch 32; hydraulic lifting device 4; feed conveyor belt 5; discharge conveyor belt 6; adjusting cylinder 7; limiter 8; slide seat 9; first gear 10; second gear 11; rack 12; limiter frame 13; spring 14; third gear 15; lifting cylinder 16. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0028] like Figure 1 As shown, the punching device for the bottom shell of an automobile fuel tank provided by the present invention specifically comprises:

[0029] A base, on which a feeding mechanism is installed;

[0030] The stand 1 is fixed to the top of the base, and a fixed seat 2 and a movable seat 3 are installed on the stand 1. The fixed seat 2 is fixedly installed on the stand 1, and the movable seat 3 is slidably installed on the stand 1, and a hydraulic lifting device 4 is connected between the fixed seat 2 and the movable seat 3.

[0031] Continue to refer Figure 1 As shown:

[0032] An upper die seat 21 is rotatably mounted on the fixed seat 2, and N upper concave dies 22 are fixed on the outer circumference of the upper die seat 21;

[0033] A lower die base 31 is rotatably mounted on the movable base 3, and a negative pressure generating device is installed inside the lower die base 31. N lower punches 32 are fixed on the outer circumferential surface of the lower die base 31. The N lower punches 32 are matched with the N upper dies 22 one by one, and a plurality of negative suction holes are opened on the surface of each lower punch 32.

[0034] As can be seen from the above, when the present invention performs stamping forming of the fuel tank bottom shell:

[0035] First, the raw material to be stamped is conveyed to the bottom of the lower die base 31 by using the feeding mechanism;

[0036] Then, the upper die holder 21 and the lower die holder 31 are rotated according to the specific specifications of the stamping and forming, so that the upper concave die 22 corresponds to the lower convex die 32;

[0037] Next, the hydraulic lifting device 4 is started to drive the movable seat 3 and the lower die seat 31 to move downward, and at the same time, the lower die seat 31 is driven to rotate 180 degrees, so that the lower punch 32 currently performing stamping (downward) faces the raw material on the feeding mechanism, and the lower punch 32 can negatively suck and pick up the raw material through the cooperation of the negative pressure generating device and the negative suction hole;

[0038] Finally, the lower die base 31 is driven to rotate 180°, and the hydraulic lifting device 4 is started to drive the movable base 3 and the lower die base 31 to move upward, thereby making the lower punch 32 and the corresponding upper die 22 close together, and completing the stamping of the raw material to obtain a stamped oil tank bottom shell.

[0039] As mentioned above, regarding the feeding mechanism, Figure 1 and Figure 3 As shown, it includes a feed conveyor belt 5 and a discharge conveyor belt 6 arranged in sequence from top to bottom, and two feed conveyor belts 5 are symmetrically arranged so that a discharge gap is formed between the two feed conveyor belts 5. Further, two groups of adjusting cylinders 7 are symmetrically fixed on the base, and the telescopic ends of the two groups of adjusting cylinders 7 are connected to limit members 8, and the two groups of limit members 8 are respectively matched with the two feed conveyor belts 5. Specifically, Figure 3 In the figure, each limiting member 8 includes two limiting rings, which are sleeved on the rotating shaft driving the feed conveyor 5, and the feed conveyor 5 is limited between the two limiting rings. Therefore, the positions of the limiting member 8 and the feed conveyor 5 can be changed by adjusting the telescopic drive of the cylinder 7, and then the size of the discharge gap can be adjusted, so that the overall feeding mechanism can be flexibly applied to the transportation of raw materials and fuel tank bottom shells of different specifications, and the corresponding N upper dies 22 and N lower punches 32 can also cooperate to realize the stamping forming of fuel tank bottom shells of different specifications.

[0040] As mentioned above, regarding the rotation of the upper die base 21 and the lower die base 31, Figure 1 and Figure 2 As shown:

[0041] The stand 1 is slidably connected with a rack 12, and a lifting cylinder 16 driving the rack 12 to lift and slide is fixed on the top of the stand 1; the fixed seat 2 is provided with a third gear 15 coaxially matched with the upper die seat 21, and the movable seat 3 is provided with a first gear 10 coaxially matched with the lower die seat 31. Based on this, when the rack 12 is lifted and moved, the lower die seat 31 and the upper die seat 21 can be driven to rotate through the first gear 10 and the third gear 15, so as to realize the synchronous rotation adjustment of the upper die seat 21 (upper concave die 22) and the lower die seat 31 (lower convex die 32).

[0042] Furthermore, a slide seat 9 is slidably installed on the stand 1, the width of the slide seat 9 is greater than the width of the moving seat 3, and the slide seat 9 is connected to the bottom of the moving seat 3 through an elastic telescopic rod, and a second gear 11 that can mesh with the first gear 10 is rotatably installed on the slide seat 9, and the second gear 11 and the third gear 15 are directly meshed with one side of the rack 12.

[0043] From the above, we can see that:

[0044] exist Figure 1 When the hydraulic lifting device 4 is started at the position shown to drive the moving seat 3 and the lower die seat 31 to move downward, the moving seat 3 pushes the slide seat 9 to move downward synchronously through the elastic telescopic rod, thereby causing the second gear 11 to rotate under the meshing action of the rack 12, thereby driving the first gear 10 and the lower die seat 31 to rotate. When the lower die seat 31 rotates 180°, it just drops above the feeding mechanism to facilitate the lower punch 32 to perform negative material suction. Conversely, after taking the material, as the moving seat 3 moves upward, the lower die seat 31 can be rotated 180° and reach Figure 1 Position shown;

[0045] exist Figure 1When the hydraulic lifting device 4 is started at the position shown to drive the moving seat 3 and the lower die seat 31 to continue to move upward, since the width of the slide 9 is greater than that of the moving seat 3, the slide 9 cannot continue to move upward under the limitation of the stand 1, while the moving seat 3 continues to move upward to achieve the mold closing of the lower punch 32 and the corresponding upper die 22, and at the same time stretch the elastic telescopic rod between the slide 9 and the moving seat 3. During this process, the first gear 10 is separated from the second gear 11, so the single upward movement of the moving seat 3 will not cause the rotation of the lower die seat 31, thereby ensuring the accuracy of the mold closing. In addition, a limit frame 13 capable of engaging with the first gear 10 is slidably installed on the moving seat 3, and a spring 14 is connected between the limit frame 13 and the moving seat 3. Based on this, when the moving seat 3 moves up alone, the limit frame 13 is pressed onto the first gear 10 by the rebound of the spring 14, thereby realizing the engagement limitation of the first gear 10 and further preventing the lower mold seat 31 from rotating (when the above-mentioned moving seat 3 is tightly attached to the sliding seat 9, the elastic force of the elastic telescopic rod is set to be greater than the elastic force of the spring 14, so that the bottom of the limit frame 13 is in contact with the top of the sliding seat 9, and the limit frame 13 is disengaged from the first gear 10, thereby ensuring that the first gear 10 can rotate smoothly).

[0046] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stamping device for a fuel tank bottom shell of an automobile, characterized in that: It comprises a stand (1) and a fixed seat (2) and a movable seat (3) mounted on the stand (1); An upper die seat (21) is rotatably mounted on the fixed seat (2), and N upper concave dies (22) are fixed on the outer peripheral surface of the upper die seat (21); A lower die seat (31) is rotatably mounted on the movable seat (3), and a negative pressure generating device is installed inside the lower die seat (31). N lower punches (32) are fixed on the outer peripheral surface of the lower die seat (31), the N lower punches (32) are matched with the N upper concave dies (22) one by one, and a plurality of negative suction holes are opened on the surface of each lower punch (32).

2. The punching device for a fuel tank bottom shell of an automobile according to claim 1, characterized in that: A hydraulic lifting device (4) is connected between the fixed seat (2) and the movable seat (3).

3. The punching device for a fuel tank bottom shell of an automobile according to claim 1, characterized in that: It also comprises a base fixed to the bottom of the stand (1), and a feeding mechanism is installed on the base.

4. The punching device for the bottom shell of an automobile fuel tank according to claim 3, characterized in that: The feeding mechanism comprises a feeding conveyor belt (5) and a discharging conveyor belt (6) which are arranged in sequence from top to bottom, and two feeding conveyor belts (5) are symmetrically arranged so that a discharging gap is formed between the two feeding conveyor belts (5).

5. The punching device for the bottom shell of an automobile fuel tank according to claim 4, characterized in that: Two groups of regulating cylinders (7) are symmetrically fixed on the base, the telescopic ends of the two groups of regulating cylinders (7) are connected to limiting members (8), and the two groups of limiting members (8) are respectively matched with two feeding conveyor belts (5).

6. The punching device for a fuel tank bottom shell of an automobile according to claim 1, characterized in that: A sliding seat (9) is slidably mounted on the stand (1); the width of the sliding seat (9) is greater than the width of the moving seat (3); and the sliding seat (9) is connected to the lower side of the moving seat (3) via an elastic telescopic rod.

7. The punching device for the bottom shell of an automobile fuel tank according to claim 6, characterized in that: The movable seat (3) is provided with a first gear (10) coaxially matched with the lower die seat (31), the sliding seat (9) is rotatably provided with a second gear (11) capable of meshing with the first gear (10), and the stand (1) is provided with a rack (12) meshing with one side of the second gear (11).

8. The punching device for the bottom shell of an automobile fuel tank according to claim 7, characterized in that: A limit frame (13) capable of meshing with the first gear (10) is slidably mounted on the movable seat (3), a spring (14) is connected between the limit frame (13) and the movable seat (3), and when the bottom of the limit frame (13) abuts against the top of the sliding seat (9), the limit frame (13) is disengaged from the first gear (10).

9. The punching device for the bottom shell of an automobile fuel tank according to claim 8, characterized in that: A third gear (15) coaxially matched with the upper die seat (21) is installed on the fixed seat (2), and the third gear (15) is meshingly connected with the rack (12).

10. The punching device for the bottom shell of an automobile fuel tank according to claim 8, characterized in that: The rack (12) is slidably connected to the stand (1), and a lifting cylinder (16) for driving the rack (12) to rise and fall and slide is fixed on the top of the stand (1).

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