Method of joining aluminum foil with a flat hammer

Abstract

A method for joining aluminum foils by one-way hammering comprises the following steps: overlapping the front end of a connecting aluminum foil with the free end of a front aluminum foil roll, wherein the portion where the connecting aluminum foil and the front aluminum foil roll overlap in projection direction is a first overlapping area; overlapping the rear end of the connecting aluminum foil with the free end of a rear aluminum foil roll, wherein the portion where the connecting aluminum foil and the rear aluminum foil roll overlap in projection direction is a second overlapping area; using a first hammer to knock the first overlapping area and the second overlapping area, so that the connecting aluminum foil is connected to the front aluminum foil roll and the rear aluminum foil roll; the hammer mark of the one-way hammer is narrow and long, and the stress in the hammer mark can be released through both ends, thereby avoiding stress concentration in the hammer mark to cause cracks in the aluminum foil; the deformation of the aluminum foil at the hammer mark has little damage to the deformation of the aluminum foil at the place without the hammer mark, thereby reducing the cracks in the aluminum foil outside the hammer mark.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum foil joining, and in particular to a method for joining aluminum foils with a straight hammer. Background Art

[0002] In order to ensure continuous production, before the etched foil enters the chemical forming process, the tail end of the previous roll of aluminum foil and the head end of the next roll of aluminum foil should be connected to facilitate the replacement of the next roll of aluminum foil by the previous roll into the chemical forming equipment.

[0003] The foil joining scheme disclosed in the applicant's prior application (application number 201710607966.5) is a manual operation foil joining, which is fixed by a single plum blossom hammer. The plum blossom hammer has a large area of ​​hammer marks, and the internal stress of the hammer marks is not easy to dissipate, resulting in stress concentration, and then cracks, especially the hammer marks at the edge of the aluminum foil. Since the deformation of the hammer marks will affect the surrounding aluminum foil without vertical marks, the aluminum foil without vertical marks will be deformed and damaged, and cracks will also be generated. The cracked aluminum foil is easily torn under the action of tension. Summary of the invention

[0004] In view of this, it is necessary to propose a method for joining aluminum foil by one-way hammering to address the above-mentioned shortcomings.

[0005] A method for joining aluminum foil by a straight hammer comprises the following steps:

[0006] Select the connecting aluminum foil;

[0007] Overlap the front end of the connecting aluminum foil with the free end of the front aluminum foil roll, and the portion where the projection direction of the connecting aluminum foil and the front aluminum foil roll overlap is the first overlapping area;

[0008] Overlap the rear end of the connecting aluminum foil with the free end of the rear aluminum foil roll, and the portion where the projection direction of the connecting aluminum foil and the rear aluminum foil roll overlap is the second overlapping area;

[0009] The first overlapping area and the second overlapping area are struck with a first hammer to connect the connecting aluminum foil with the front aluminum foil roll and the rear aluminum foil roll.

[0010] Preferably, the front edge of the connecting aluminum foil is a curved edge, and the rear edge of the connecting aluminum foil is a straight edge.

[0011] Preferably, the free end edge of the front aluminum foil roll is a straight edge, and the free end edge of the rear aluminum foil roll is a curved edge.

[0012] Preferably, the curved edge is in the shape of an arc.

[0013] Preferably, the thickness of the front aluminum foil roll and the rear aluminum foil roll is 120-137 μm, and the thickness of the connecting aluminum foil is 82-95 μm.

[0014] Preferably, the thickness of the front aluminum foil roll and the rear aluminum foil roll is 130 μm.

[0015] Preferably, the thickness of the connecting aluminum foil is 90 μm.

[0016] Preferably, the connecting aluminum foil and the front aluminum foil roll corresponding to the first overlapping area, and the connecting aluminum foil and the front aluminum foil roll corresponding to the second overlapping area are pre-baked.

[0017] Preferably, the baking temperature is 1000-1200°C.

[0018] Preferably, a plurality of parallel slits are cut at the end of the connecting aluminum foil, and the slits extend along the connecting aluminum foil from the end of the connecting aluminum foil to the center of the connecting aluminum foil, and the length of the slits is not greater than the length of the first overlapping area or the second overlapping area.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The hammer mark of the straight hammer is narrow and long, and the stress in the hammer mark can be released through both ends, avoiding the concentration of stress in the hammer mark and causing cracks in the aluminum foil; the deformation of the aluminum foil at the hammer mark causes less damage to the deformation of the aluminum foil at the place without the hammer mark, reducing the cracks in the aluminum foil outside the hammer mark. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the front aluminum foil roll and the rear aluminum foil roll in a connected state.

[0022] Figure 2 It is a front view of the front aluminum foil roll and the rear aluminum foil roll in a connected state.

[0023] Figure 3 Schematic diagram of the free end of the front aluminum foil roll.

[0024] Figure 4 Schematic diagram of the free end of the rear aluminum foil roll.

[0025] Figure 5 Schematic diagram of the connecting aluminum foil.

[0026] Figure 6 It is an axonometric view of the hammer.

[0027] Figure 7 It is a front view of the single-hammer drop hammer foil joining device.

[0028] Figure 8 It is a top view of the single-hammer drop hammer foil joining device.

[0029] Fig. 9 It is a right side view of the single-hammer drop hammer foil joining device.

[0030] Fig.10 is a schematic diagram of the suspension assembly.

[0031] Fig.11 for Fig.10 A partial view of the suspension assembly described in .

[0032] In the figure: a foil receiving station 10, a foil receiving rack 20, a dynamic adsorption plate 30, a hammer head 40, a suspension assembly 50, a hanging tube 51, a hammer handle 52, a first connecting member 53, a connecting rod 54, a second connecting member 55, a pin 56, a cap body 561, a rod body 562, a wedge-shaped column 563, a spring 564, a connecting aluminum foil 60, a front aluminum foil roll 70, and a rear aluminum foil roll 80. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0034] See also Figures 6 to 11 The present invention provides a straight-hammer drop-hammer foil joining device, comprising a foil joining platform 10, a foil joining frame 20, a dynamic adsorption plate 30, and a hammer head 40. The foil joining frame 20 is arranged on the foil joining platform 10, and the foil joining frame 20 and the foil joining platform 10 are slidably matched. The dynamic adsorption plate 30 is arranged on the upper part of the foil joining frame 20. When the dynamic adsorption plate 30 is powered on, the hammer head 40 is adsorbed on the bottom wall of the dynamic adsorption plate 30. When the dynamic adsorption plate 30 is powered off, the hammer head 40 falls freely from the dynamic adsorption plate 30. The hammer head 40 is a straight-hammer.

[0035] The hammer head 40 falls from the dynamic adsorption plate 30 . Due to the consistent height and the consistent installation method on the dynamic adsorption plate 30 , the consistency of the hammer mark on the aluminum foil can be ensured, the difference in force and direction of manual knocking is eliminated, and the stability of the aluminum foil connection process is ensured.

[0036] The hammer mark of the flat hammer is narrow and long, and the stress in the hammer mark can be released through both ends, avoiding the concentration of stress in the hammer mark and causing cracks in the aluminum foil.

[0037] The hammer mark of the straight hammer is narrow and long, and the deformation of the aluminum foil at the hammer mark has little damage to the deformation of the aluminum foil at the place without the hammer mark, thereby reducing the occurrence of cracks in the aluminum foil outside the hammer mark.

[0038] The dynamic adsorption plate 30 can be designed in a reasonable shape so that its magnetic lines of force are perpendicular to the bottom surface of the dynamic adsorption plate 30 .

[0039] See also Figures 7 to 11 Further, the foil receiving frame 20 can be extended or shortened. For example, the foil receiving frame 20 is a cylinder.

[0040] See also Figures 7 to 11 Furthermore, a slide groove is provided on the foil receiving platform 10, and a slider is provided at the lower end of the foil receiving frame 20, and the slider is slidably matched with the slide groove.

[0041] See also Figures 7 to 11 , further, the dynamic adsorption plate 30 is an electromagnet.

[0042] See also Figures 7 to 11 Furthermore, the single-hammer drop hammer foil joining device also includes a suspension assembly 50, which includes a hanging tube 51, one end of which is open, and the opposite end of the hanging tube 51 is connected to the dynamic adsorption plate 30, the open end of the hanging tube 51 is downward, and the axis of the hanging tube 51 is opposite to the direction of gravity.

[0043] See also Figures 7 to 11 Furthermore, the suspension assembly 50 also includes a hammer handle 52 , the lower end of the hammer handle 52 is connected to the hammer head 40 , and the outer diameter of the hammer handle 52 is equal to the inner diameter of the hanging tube 51 .

[0044] See also Figures 7 to 11 Furthermore, the suspension assembly 50 also includes a first connecting member 53 and a connecting rod 54. The upper part of the first connecting member 53 is a cone, and the lower part of the first connecting member 53 is a column. The cone tip of the cone of the upper part of the first connecting member 53 is arranged away from the column of the lower part of the first connecting member 53. The upper end of the connecting rod 54 is connected to the lower part of the first connecting member 53, and the lower end of the connecting rod 54 is connected to the upper end of the hammer handle 52. The outer diameter of the connecting rod 54 is smaller than the outer diameter of the hammer handle 52. The bottom diameter of the upper cone of the first connecting member 53 is equal to the outer diameter of the lower column of the first connecting member 53, and the outer diameter of the lower column of the first connecting member 53 is equal to the outer diameter of the hammer handle 52.

[0045] See also Figures 7 to 11 Furthermore, the suspension assembly 50 also includes a second connecting member 55, which is sleeved on the connecting rod 54. The second connecting member 55 is formed by two identical truncated cones, the upper bottom surface diameter of the truncated cone is smaller than the lower bottom surface diameter, and the lower bottom surfaces of the two truncated cones are in contact. A sliding through hole is provided on the second connecting member 55, which passes through the upper bottom surfaces of the two truncated cones. The diameter of the sliding through hole is larger than the outer diameter of the connecting rod 54, and the lower bottom surface diameter of the truncated cone is equal to the outer diameter of the hammer handle 52. A receiving groove is provided at the bottom of the first connecting member 53, and the shape of the receiving groove matches the shape of the truncated cone located on the upper part of the second connecting member 55. In this way, when the second connecting member 55 rises to the position of the first connecting member 53, the upper half of the second connecting member 55 can be embedded in the first connecting member 53.

[0046] See also Figures 7 to 11Furthermore, a first through hole and a second through hole are provided on the side wall of the hanging tube 51, the first through hole and the second through hole are coaxially arranged, the first through hole and the second through hole are connected end to end, the diameter of the first through hole is smaller than the diameter of the second through hole, the hanging assembly 50 also includes a pin 56, the pin 56 includes a cap body 561, a rod body 562, and a wedge-shaped column 563 connected in sequence, the outer diameter of the cap body 561 is larger than the diameter of the first through hole, the outer diameter of the rod body 562 is smaller than the diameter of the first through hole, the outer diameter of the wedge-shaped column 563 is larger than the diameter of the first through hole, the outer diameter of the wedge-shaped column 563 is smaller than the diameter of the second through hole, and the end face of the wedge-shaped column 563 is a downwardly inclined inclined surface.

[0047] See also Figures 7 to 11 Furthermore, the suspension assembly 50 also includes a spring 564, which is sleeved on the rod body 562, one end of the spring 564 is connected to the hanging tube 51, and the other end of the spring 564 is connected to the wedge-shaped column 563.

[0048] The method of using the one-shaped hammer drop hammer foil splicing device is as follows: after overlapping the free ends of the connecting aluminum foil 60 and the front aluminum foil roll 70 or the rear aluminum foil roll 80, the aluminum foil 60 is placed on the foil splicing platform 10, and the foil splicing rack 20 is moved so that the hammer head 40 on the foil splicing rack 20 is located above the first overlapping area or the second overlapping area. The hanging tubes 51 are densely distributed on the dynamic adsorption plate 30, and the hammer heads 40 can be configured for some hanging tubes 51 as needed; at the beginning, the hanging assembly 50 is installed so that the first connecting member 53 is stuck in the hanging tube 51, and the pin 56 is between the first connecting member 53 and the second connecting member. The hammer head 40 is fixed to the hanging tube 51 by the pin 56 through the suspension assembly 50. Then, the dynamic adsorption plate 30 is energized. Under the action of magnetic force, the suspension assembly 50 rises, and the pin 56 is between the second connecting member 55 and the hammer handle 52. Then, the dynamic adsorption plate 30 is powered off, and the suspension assembly 50 and the hammer head 40 fall freely under the action of gravity. During the falling process, the pin 56 cannot be stuck between the second connecting member 55 and the first connecting member 53 until the hammer head 40 falls on the first overlapping area or the second overlapping area to achieve aluminum foil connection.

[0049] The straight hammer aluminum foil joining method can be operated using a straight hammer drop hammer foil joining device.

[0050] See also Figures 1 to 5 The present invention provides a combined hammering aluminum foil method, comprising the following steps:

[0051] Select the connecting aluminum foil 60;

[0052] The front end of the connecting aluminum foil 60 is overlapped with the free end of the front aluminum foil roll 70, and the portion where the projection directions of the connecting aluminum foil 60 and the front aluminum foil roll 70 overlap is the first overlapping area;

[0053] The rear end of the connecting aluminum foil 60 is overlapped with the free end of the rear aluminum foil roll 80, and the portion where the projection directions of the connecting aluminum foil 60 and the rear aluminum foil roll 80 overlap is the second overlapping area;

[0054] The first overlapping area and the second overlapping area are struck with a first hammer to connect the connecting aluminum foil 60 with the front aluminum foil roll 70 and the rear aluminum foil roll 80 .

[0055] For example, the first overlapping region or the width of the first overlapping region is 5-10 cm.

[0056] See also Figures 1 to 5 Furthermore, the front edge of the connecting aluminum foil 60 is a curved edge, and the rear edge of the connecting aluminum foil 60 is a straight edge.

[0057] See also Figures 1 to 5 Furthermore, the free end edge of the front aluminum foil roll 70 is a straight edge, and the free end edge of the rear aluminum foil roll 80 is a curved edge.

[0058] See also Figures 1 to 5 , further, the curved edge is an arc shape.

[0059] See also Figures 1 to 5 Furthermore, the thickness of the front aluminum foil roll 70 and the rear aluminum foil roll 80 is 120-137µm, and the thickness of the connecting aluminum foil 60 is 82-95µm.

[0060] See also Figures 1 to 5 , further, the thickness of the front aluminum foil roll 70 and the rear aluminum foil roll 80 is 130µm.

[0061] See also Figures 1 to 5 , further, the thickness of the connecting aluminum foil 60 is 90µm.

[0062] See also Figures 1 to 5 Furthermore, the connecting aluminum foil 60 and the front aluminum foil roll 70 corresponding to the first overlapping area, and the connecting aluminum foil 60 and the front aluminum foil roll 70 corresponding to the second overlapping area are pre-baked.

[0063] After the aluminum foil is baked, its internal structure will become a harmful structure, but its strength will be improved, which is beneficial to alleviate the stress concentration inside the hammer mark and the deformation damage outside the hammer mark.

[0064] See also Figures 1 to 5 , further, the baking temperature is 1000-1200°C.

[0065] See also Figures 1 to 5 Furthermore, a plurality of parallel slits are cut at the end of the connecting aluminum foil 60, and the slits extend along the connecting aluminum foil 60 from the end of the connecting aluminum foil 60 to the center of the connecting aluminum foil 60, and the length of the slits is not greater than the length of the first overlapping area or the second overlapping area.

[0066] The inside of the plum blossom hammer mark is prone to cracks due to stress concentration, and the edge of the connecting aluminum foil 60 will crack due to deformation and damage of the plum blossom hammer mark.

[0067] After the ends of the connecting aluminum foil 60 are split, it is equivalent to forming an artificially controllable crack. Since the direction of the crack is consistent with the direction of the tension applied to the aluminum foil during operation, the aluminum foil will not be torn. However, cracks caused by stress concentration or deformation damage are different. Both the position and direction are uncertain. Once generated, the crack will expand rapidly under the action of tension, causing the aluminum foil to tear.

[0068] After the end of the connected aluminum foil 60 is split, the distance between the inside of the plum blossom hammer mark and the free edge of the aluminum foil is greatly shortened, which is conducive to the release of stress inside the plum blossom hammer mark, thereby reducing the deformation damage of the aluminum foil outside the plum blossom hammer mark and reducing the generation of uncontrollable cracks.

[0069] The steps in the method of the embodiment of the present invention can be adjusted in order, combined or deleted according to actual needs.

[0070] The modules or units in the device of the embodiment of the present invention may be combined, divided or deleted according to actual needs.

[0071] What is disclosed above is only a preferred embodiment of the present invention, which certainly cannot be used to limit the scope of rights of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A method for joining aluminum foil by hammering, characterized in that: The steps include: Select the connecting aluminum foil; Overlap the front end of the connecting aluminum foil with the free end of the front aluminum foil roll, and the projection direction of the connecting aluminum foil and the front aluminum foil roll The overlapping part is the first overlapping area; Overlap the rear end of the connecting aluminum foil with the free end of the rear aluminum foil roll, and the projection direction of the connecting aluminum foil and the rear aluminum foil roll The overlapping part is the second overlapping area; Use the first hammer to knock the first overlap area and the second overlap area to make the connecting aluminum foil and the front aluminum foil roll And the rear foil roll connection: A plurality of parallel slits are cut at the end of the connecting aluminum foil, and the slits extend along the connecting aluminum foil from the end of the connecting aluminum foil to the center of the connecting aluminum foil, and the length of the slits is not greater than the length of the first overlapping area or the second overlapping area.

2. The method for joining aluminum foil by hammering as claimed in claim 1, characterized in that: The front end of the connecting aluminum foil The edge is a curved edge, and the rear end edge connected to the aluminum foil is a straight edge.

3. The method for joining aluminum foil by hammering as claimed in claim 1, characterized in that: The front foil roll is free The end edge is a straight edge, and the free end edge of the rear aluminum foil roll is a curved edge.

4. The method for joining aluminum foil by straight hammering as claimed in claim 3, characterized in that: The curved edge is an arc shape.

5. The method for joining aluminum foil by hammering as claimed in claim 1, characterized in that: The front aluminum foil roll and the rear aluminum The thickness of the foil roll is 120-137 µm, the thickness of the connecting foil is 82-95 µm.

6. The method for joining aluminum foil by straight hammering as claimed in claim 5, characterized in that: Front aluminum foil roll and rear aluminum foil roll The thickness is 130µm.

7. The method for joining aluminum foil by straight hammering as claimed in claim 5, characterized in that: The thickness of the connecting aluminum foil 90µm.

8. The method for joining aluminum foil by straight hammering as claimed in claim 1, characterized in that: The first overlapping area corresponds to The connecting aluminum foil and the front aluminum foil roll, the connecting aluminum foil and the front aluminum foil roll corresponding to the second overlapping area are pre-applied to the baking Roasted.

9. The method for joining aluminum foil by straight hammering as claimed in claim 8, characterized in that: The baking temperature is 1000-1200℃。

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