Aluminum packaging and its manufacturing device and preparation method

Abstract

The present invention relates to an aluminum package, a manufacturing device thereof, and a preparation method. The manufacturing device includes a positioning fixture and a fixed mold fixture which are cooperatively arranged. The positioning fixture includes a support member and a limiting member disposed on the periphery of the support member. The support member has a support surface, and the limiting member protrudes from the support surface and can move relative to the support member to change the protruding height relative to the support surface. The fixed mold fixture includes a jacket, and the jacket includes a holding end facing the positioning fixture. When manufacturing the aluminum package, the support member supports the aluminum tube, the jacket is sleeved on the aluminum tube, and the holding end cooperates with the limiting member to form the bottom of the aluminum tube. The holding end can push the limiting member to move relative to the support member. By the cooperation of the positioning fixture and the fixed mold fixture in the manufacturing device, the present invention solves the problem of the single shape of the bottom of the aluminum package, thereby obtaining an aluminum package with a bottom having an arc shape, a waist constriction or a flared opening in the middle, and making the product shape of the aluminum package more diverse.

Description

Technical Field

[0001] The present invention relates to the technical field of shaping and processing, and particularly to aluminum packaging and its manufacturing device and preparation method. Background Art

[0002] Among common metal materials, aluminum has good ductility, so it can be processed into various shaped aluminum packaging products. Also, because of its light weight, not easy to deform or break, and the surface can be printed, more and more industries have started to use aluminum packaging products.

[0003] On the market, aluminum packaging with a wall thickness of 0.4 mm to 0.6 mm mainly includes aluminum bottles, aluminum cups, aluminum cans, etc. The preparation method of such aluminum packaging is mainly to first obtain an aluminum tube blank through cold extrusion, and then go through processes such as polishing, inner coating, bottom coating, offset printing, varnish, etc. Finally, in the forming stage, the process of flaring or necking is used for forming. However, in the forming stage, a fixture is required at the bottom to clamp the aluminum tube blank, resulting in a fixed bottom shape of the product, which can only be a straight line. Moreover, the smaller the product, the less space is left for the fixture at the bottom, and the greater the processing difficulty. Therefore, traditional aluminum packaging products can only change the shape at the upper part, and the bottom shape is single, all being straight lines. Summary of the Invention

[0004] Based on this, in view of the above problems, it is necessary to provide an aluminum packaging and its manufacturing device and preparation method, which can solve the problem of the single bottom shape of aluminum packaging through this manufacturing device and preparation method, and obtain an aluminum packaging with a bottom arc shape, a middle waist reduction or flaring structure.

[0005] An aluminum packaging manufacturing device includes a positioning fixture and a fixed mold fixture that are cooperatively arranged. The positioning fixture includes a support member and a limiting member provided on the periphery of the support member. The support member has a support surface, and the limiting member protrudes from the support surface and can move relative to the support member to change the protruding height relative to the support surface. The fixed mold fixture includes a jacket, and the jacket includes a holding end facing the positioning fixture. When manufacturing aluminum packaging, the support member supports the aluminum tube, the jacket is sleeved on the aluminum tube, and the holding end cooperates with the limiting member to form the bottom of the aluminum tube, and the holding end can push the limiting member to move relative to the support member.

[0006] In one embodiment, the limiting member is arranged around the support member, and the limiting member includes at least one limiting block.

[0007] In one embodiment, the jacket includes a deformation part arranged near the holding end, and the inner diameter of the deformation part gradually decreases in the direction away from the holding end.

[0008] In one embodiment, the fixed mold fixture further includes a fixing member, the length of the fixing member is greater than the length of the jacket, and one end of the fixing member facing away from the fixed mold fixture can extend out of the jacket. When manufacturing the aluminum package, the fixing member extends into the aluminum tube and abuts the aluminum tube against the support member.

[0009] In one embodiment, the manufacturing device further includes a locking fixture and an expanding / contracting mouth mold which are cooperatively arranged. The locking fixture includes a concave accommodating cavity. The locking fixture can lock the bottom of the aluminum tube after the bottom is formed. The expanding / contracting mouth mold performs expanding / contracting mouth processing on the locked aluminum tube.

[0010] Wherein, the surface of the accommodating cavity includes a flexible material. The locking fixture includes a plurality of locking blocks, and the plurality of locking blocks are spliced to form the locking fixture.

[0011] In one embodiment, the manufacturing device further includes a glue stick. The glue stick includes a central axis and a working part arranged on the periphery of the central axis. The working part includes a first working part, a second working part, and a transition part connecting the first working part and the second working part. The outer diameter of the first working part is greater than the outer diameter of the second working part. The transition part is an arc-shaped structure. The glue stick is used for coating the surface of the aluminum tube before the bottom is formed.

[0012] A method for preparing an aluminum package includes:

[0013] Providing an aluminum tube;

[0014] Assembling the aluminum tube on a positioning fixture, sleeving a fixed mold fixture outside the aluminum tube, and sliding the jacket of the fixed mold fixture along the aluminum tube, so that the abutting end pushes the limiting member to move relative to the support member, so as to change the protruding height of the limiting member relative to the support surface, and form the bottom of the aluminum tube to obtain a preform.

[0015] Assembling the preform on a locking fixture, and then performing expanding and / or contracting mouth processing on the preform by using an expanding and / or contracting mouth mold to obtain an aluminum package.

[0016] In one embodiment, before assembling the aluminum tube on the positioning fixture, it further includes performing primer coating treatment on the surface of the aluminum tube by using a glue stick, and performing printing treatment on the surface of the aluminum tube by using a glue stick, so that image information is printed on the surface of the aluminum tube.

[0017] In one embodiment, after the printing treatment, it further includes performing varnish treatment on the surface of the aluminum tube by using a glue stick.

[0018] An aluminum package obtained by the above preparation method.

[0019] Through the cooperation of the positioning fixture and the fixed mold fixture in the manufacturing device, the present invention solves the problem of the single shape of the bottom of the aluminum packaging, thereby obtaining an aluminum packaging with a circular arc-shaped bottom, a waist-shaped or flared middle part, making the product shape of the aluminum packaging richer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the aluminum packaging manufacturing device of the present invention;

[0021] Figure 2 It is a top view of an embodiment of the positioning fixture of the present invention;

[0022] Figure 3 It is a top view of another embodiment of the positioning fixture of the present invention;

[0023] Figure 4 It is a schematic diagram of the locking fixture of the present invention;

[0024] Figure 5 It is a schematic diagram of the aluminum tube of the present invention;

[0025] Figure 6 It is a schematic diagram of the glue stick of the present invention;

[0026] Figure 7 It is a process diagram of the preparation of the prefabricated part of the present invention. Among them, a is a schematic diagram of the aluminum tube assembled on the positioning fixture, b is a schematic diagram during the processing of the fixed mold fixture, and c is a schematic diagram of the prefabricated part obtained by the processing of the fixed mold fixture;

[0027] Figure 8 It is a schematic diagram of the prefabricated part fixed on the locking fixture of the present invention;

[0028] Figure 9 It is a schematic diagram of the preparation process of the aluminum packaging a;

[0029] Figure 10 It is a schematic diagram of 4 kinds of aluminum packaging of the present invention.

[0030] In the figure: 1. Positioning fixture; 2. Fixed mold fixture; 3. Locking fixture; 4. Aluminum tube; 5. Prefabricated part; 6. Glue stick; 10. Support member; 11. Limiting member; 20. Jacket; 21. Fixing member; 30. Locking block; 40. Body; 41. Arc part; 42. Tube bottom; 60. Central axis; 61. Second working part; 62. First working part; 63. Transition part; 100. Support surface; 110. Limiting block; 200. Abutting end; 201. Straight part; 202. Deformation part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] The following will further illustrate the aluminum packaging, its manufacturing device and preparation method provided by the present invention with reference to the accompanying drawings.

[0032] The aluminum packaging manufacturing device provided by the present invention is mainly used for preparing aluminum packaging products such as aluminum bottles and aluminum cups. The obtained aluminum packaging products have a structure with a circular arc at the bottom and a waist or flared shape in the middle, with rich shapes.

[0033] As Figure 1 shown, the manufacturing device includes a positioning fixture 1 and a fixed mold fixture 2 that are cooperatively arranged. The positioning fixture 1 includes a support member 10 and a limiting member 11 provided on the peripheral side of the support member 10. The support member 10 has a support surface 100. The limiting member 11 protrudes from the support surface 100 and can move relative to the support member 10 to change the protruding height relative to the support surface 100. The fixed mold fixture 2 includes a jacket 20. The jacket 20 includes a holding end 200 facing the positioning fixture. When manufacturing aluminum packaging, the support member 10 supports the aluminum tube, the jacket 20 is sleeved on the aluminum tube, and the holding end 200 cooperates with the limiting member 11 to form the bottom of the aluminum tube. The holding end 200 can push the limiting member 11 to move relative to the support member 10.

[0034] Among them, there are many ways to realize the movement of the limiting member 11 relative to the support member 10, including setting elastic elements such as springs in the limiting member 11, setting sliding tracks between the limiting member 11 and the support member 10, etc. Preferably, the way to realize the movement of the limiting member 11 relative to the support member 10 is to set elastic elements such as springs in the limiting member 11, so that the limiting member 11 can move relative to the support member 10 under the action of the holding end 200 of the jacket 20, reducing the protruding height of the limiting member 11 relative to the support surface 100 until the protruding height is close to 0 or equal to 0, so that the bottom of the aluminum tube deforms under the extrusion force of the jacket 20 to obtain an aluminum tube with a formed bottom. Then, after the holding end 200 disengages from the limiting member 11, the acting force pushing the limiting member 11 disappears, and the limiting member 11 resets under the action of the elastic element, protruding from the support surface 100 again and positioning and restricting the aluminum tube after bottom forming to prevent the aluminum tube after bottom forming from falling.

[0035] Specifically, the protruding height of the limiting member 11 protruding from the support surface 100 can be adjusted according to the size of the aluminum tube. On the one hand, it can better restrict the aluminum tube, and on the other hand, it can control the size of the bottom of the aluminum tube after forming.

[0036] Combined with Figure 2 and Figure 3 shown, the limiting member 11 is arranged around the support member 10, and the aluminum tube abuts against the support surface 100 of the support member 10 and is restricted by the limiting member 11. Among them, the limiting member 11 includes at least one limiting block 110.

[0037] When the limiting member 11 includes one limiting block 110, asFigure 2 As shown, the limiting block 110 is an integral limiting member 11 surrounding the support member 10, which serves to limit the aluminum tube.

[0038] When the limiting member 11 includes a plurality of limiting blocks 110, the plurality of limiting blocks 110 are arranged at intervals to form the limiting member 11, which serves to limit the aluminum tube 4. Among them, the number of limiting blocks 110 can be 2, 3, 4, 5, etc. Considering the use effect, when the limiting member 11 includes a plurality of limiting blocks 110, it is preferably as Figure 3 shown, the limiting member 11 includes 3 limiting blocks 110 arranged at intervals, and the intervals between the 3 limiting blocks 110 are uniform.

[0039] The jacket 20 includes a deformation part 202 provided near the abutting end 200, and the inner diameter of the deformation part 202 gradually decreases in the direction away from the abutting end 200, so that through the extrusion of the deformation part 202, an aluminum tube with a formed bottom is processed.

[0040] Specifically, the jacket 20 further includes a straight part 201, and the inner diameter of the deformation part 202 gradually decreases in the direction close to the straight part 201. The maximum inner diameter of the deformation part 202 is equal to the outer diameter of the aluminum tube, and the aluminum tube deforms under the extrusion force of the straight part 201 and the deformation part 202. In particular, under the extrusion force of the deformation part 202, the bottom of the aluminum tube is formed into an arc shape.

[0041] It can be understood that the size ratio of the straight part 201 and the deformation part 202 is adjustable, that is, the ratio of the arc shape formed at the bottom of the aluminum tube is adjustable.

[0042] When manufacturing the aluminum package, in order to prevent the aluminum tube after bottom forming from falling when the jacket 20 rises, the fixed mold fixture 2 further includes a fixing member 21, the fixing member 21 is fixedly arranged in the inner cavity of the jacket 20, and the gap between the fixing member 21 and the jacket 20 is adapted to the wall thickness of the aluminum tube. When manufacturing the aluminum package, the fixing member 21 extends into the aluminum tube and abuts the aluminum tube against the support member 10.

[0043] Preferably, the length of the fixing member 21 is greater than the length of the jacket 20, and the end of the fixing member 21 away from the fixed mold fixture 2 can extend out of the jacket 20. When the jacket 20 is sleeved on the aluminum tube and slides along the aluminum tube, the fixing member 21 can first abut the bottom of the aluminum tube and abut the aluminum tube against the supporting surface 100 of the supporting member 10. After the processing is completed, the jacket 20 rises, the abutting end 200 is separated from the limiting member 11, and the force acting on the limiting member 11 disappears, so that the limiting member 11 is reset, protrudes from the supporting surface 100 again, and positions and limits the aluminum tube after the bottom is formed. At this time, the fixing member 21 is separated from the bottom of the aluminum tube after the bottom is formed, so that the aluminum tube after the bottom is formed will not fall due to loss of restriction.

[0044] The manufacturing device also includes a locking clamp and an expansion / shrinking mold that are arranged in cooperation. The locking clamp can lock the bottom of the aluminum tube after the bottom is formed, and the expansion / shrinking mold expands / shrinks the locked aluminum tube to process the aluminum tube after the bottom is formed into an aluminum package.

[0045] like Figure 4 As shown, in order to adapt to the aluminum tube after the bottom is formed, the locking clamp 3 includes a concave accommodating cavity, the structure of which is consistent with the bottom of the aluminum tube after the bottom is formed. Therefore, the aluminum tube after the bottom is formed is assembled in the accommodating cavity. When the locking part of the bottom is very small and in an arc shape, the locking clamp 3 still has enough grip on the bottom, so that the aluminum tube after the bottom is formed is locked and fixed to the locking clamp 3 for expansion / shrinkage processing.

[0046] During the expansion / contraction process, in order to prevent the accommodating cavity from wearing the locking portion (i.e., the bottom) of the bottom-molded aluminum tube, the surface of the accommodating cavity includes a flexible material, and the flexible material includes nylon, polyester, and the like.

[0047] It can be understood that the locking clamp 3 can be directly made of materials such as nylon and polyester.

[0048] Preferably, the locking fixture 3 includes a plurality of locking blocks 30, and a plurality of the locking blocks 30 are spliced ​​to form the locking fixture 3. The number of the locking blocks 30 may be 2, 3, 4, 5, etc., preferably 2. The locking fixture 3 is formed by splicing two locking blocks 30, which not only facilitates the locking and fixing of the aluminum tube after the bottom is formed, but also facilitates the demoulding of the aluminum packaging product after the expansion / shrinking processing to obtain the aluminum packaging.

[0049] The manufacturing device also includes a glue stick, which is used to coat the surface of the aluminum tube before the bottom is formed.

[0050] like Figure 5As shown, when the aluminum tube 4 includes a body 40, a tube bottom 42, and an arc portion 41 connected between the body 40 and the tube bottom 42. Considering that when the surface of the aluminum tube 4 is coated with a conventional glue stick, only the surface of the body 40 can be coated, and the arc portion 41 cannot be coated.

[0051] Therefore, the present invention uses a glue stick 6 as Figure 6 shown to coat the surface of the aluminum tube 4. The glue stick 6 includes a central axis 60 and a working portion provided on the periphery of the central axis. The central axis 60 can rotate under the drive of a driving device such as a motor, thereby driving the working portion to rotate and coating the surface of the aluminum tube 4.

[0052] The working portion includes a first working portion 62, a second working portion 61, and a transition portion 63 connected between the first working portion 62 and the second working portion 61. The outer diameter of the first working portion 62 is greater than the outer diameter of the second working portion 61, and the transition portion 63 is an arc-shaped structure. Thus, the surface of the arc portion 41 of the aluminum tube 4 is coated through the transition portion 63, and the surface of the body 40 of the aluminum tube 4 is coated through the second working portion 61.

[0053] Wherein, the arc length of the transition portion 63 is greater than or equal to the arc length of the arc portion 41 of the aluminum tube 4, and the radius corresponding to the arc portion 41 is less than or equal to the radius corresponding to the transition portion 63.

[0054] The present invention also provides a preparation method of an aluminum package using the above manufacturing device, including:

[0055] S1, providing an aluminum tube 4;

[0056] S2, assembling the aluminum tube 4 on a positioning fixture 1, sleeving a fixed mold fixture 2 outside the aluminum tube 4, and the jacket 20 of the fixed mold fixture 2 slides along the aluminum tube 4, so that the abutting end 200 pushes the limiting member 11 to move relative to the supporting member 10, so as to change the protruding height of the limiting member 11 relative to the supporting surface 100, and form the bottom of the aluminum tube 4 to obtain a preform 5;

[0057] S3, assembling the preform 5 on a locking fixture 3, and then performing expanding and / or necking processing on the preform 5 using an expanding and / or necking mold to obtain an aluminum package.

[0058] In step S1, the aluminum tube 4 is processed from an aluminum cake by a cold extrusion process. Wherein, the arc length of the arc portion 41 and the radius corresponding to the arc portion 41 can be increased or decreased according to requirements.

[0059] After obtaining the aluminum tube 4 by cold extrusion, the aluminum tube 4 is subjected to standard process treatment through processes such as polishing, trimming, cleaning, and inner coating. Then, a glue stick 6 is used to perform a primer coating treatment on the surface of the aluminum tube 4, and then the glue stick 6 is used to perform a printing treatment on the surface of the aluminum tube 4, so that image information is printed on the surface of the aluminum tube 4.

[0060] After the printing treatment, a varnish treatment can also be performed on the surface of the aluminum tube 4 using the glue stick 6 to protect the image information formed by printing.

[0061] The preparation process of step S2 is as Figure 7 shown. Through this step, a preform 5 with a circular arc-shaped bottom is obtained.

[0062] A schematic diagram of fixing the preform 5 of step S3 to the locking fixture 3 is as Figure 8 shown. After assembling the preform 5 to the locking fixture 3, according to needs, a flaring die is used for flaring and / or a necking die is used for necking. After multiple flaring and / or necking processes, an aluminum package is obtained.

[0063] As Figure 9 shown, after the preform 5 is locked and fixed to the locking fixture 3, through multiple flaring processes using a flaring die and multiple necking processes using a necking die, an aluminum package a is obtained.

[0064] The present invention also provides an aluminum package obtained by the above preparation method. As Figure 10 shown, the aluminum package includes an aluminum bottle and an aluminum cup, both having a circular arc-shaped bottom, and the shape of the upper half can be adjusted according to needs, such as a and b being a gourd shape with a constricted waist, c being a conical shape that continuously narrows, and d being a cup shape that continuously expands.

[0065] Among them, when the aluminum package is an aluminum bottle, the bottle mouth can be a curled edge or a threaded structure, etc.

[0066] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as these technical feature combinations do not conflict, they should all be considered as the scope described in this specification.

[0067] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent should be subject to the appended claims.

Claims

1. An aluminum packaging production device, It is characterized in that It comprises a positioning fixture and a fixed mold fixture which are arranged in cooperation, the positioning fixture comprises a support member and a limiting member arranged on the peripheral side of the support member, the support member has a support surface, the limiting member protrudes from the support surface and can move relative to the support member to change the protruding height relative to the support surface, the fixed mold fixture comprises a jacket, the jacket comprises an abutting end facing the positioning fixture, when making aluminum packaging, the support member supports an aluminum tube, the jacket is sleeved on the aluminum tube and the abutting end cooperates with the limiting member to form the bottom of the aluminum tube, and the abutting end can push the limiting member to move relative to the support member; The manufacturing device also includes a glue stick, the glue stick includes a central axis and a working part arranged on the peripheral side of the central axis, the working part includes a first working part, a second working part, and a transition part connected between the first working part and the second working part, the outer diameter of the first working part is greater than the outer diameter of the second working part, the transition part is an arc-shaped structure, and the glue stick is used to coat the surface of the aluminum tube before the bottom is formed; The fixed mold fixture also includes a fixing piece, the length of which is greater than the length of the jacket, and one end of the fixing piece away from the fixed mold fixture can extend out of the jacket. When making aluminum packaging, the fixing piece extends into the aluminum tube and abuts the aluminum tube against the support piece.

2. The aluminum packaging manufacturing device according to claim 1, It is characterized in that The limiting member is arranged around the supporting member, and the limiting member includes at least one limiting block.

3. The aluminum packaging manufacturing device according to claim 1, It is characterized in that The jacket comprises a deformation portion arranged close to the abutting end, and the inner diameter of the deformation portion gradually decreases in a direction away from the abutting end.

4. The aluminum packaging manufacturing device according to claim 1, It is characterized in that The manufacturing device also includes a locking fixture and an expansion / shrinking mold that are arranged in cooperation, wherein the locking fixture includes a concave accommodating cavity, and the locking fixture can lock the bottom of the aluminum tube after the bottom is formed, and the expansion / shrinking mold performs expansion / shrinking processing on the locked aluminum tube; Wherein, the surface of the accommodating cavity includes a flexible material, and the locking clamp includes a plurality of locking blocks, and a plurality of the locking blocks are spliced ​​together to form the locking clamp.

5. A method for preparing an aluminum package, It is characterized in that include: Aluminum tubes are provided; Assemble the aluminum tube on the positioning fixture, and sleeve the fixed mold fixture on the outside of the aluminum tube. The sleeve of the fixed mold fixture slides along the aluminum tube, so that the abutting end pushes the limiter to move relative to the support member, so as to change the protruding height of the limiter relative to the support surface, so that the bottom of the aluminum tube is formed to obtain a prefabricated part; The preform is assembled on a locking fixture, and then the preform is expanded and / or shrunk using an expansion and / or shrinking mold to obtain an aluminum package, wherein the locking fixture includes a concave accommodating cavity, the locking fixture can lock the bottom of the aluminum tube after the bottom is formed, and the surface of the accommodating cavity includes a flexible material.

6. The method for preparing the aluminum package according to claim 5, It is characterized in that Before assembling the aluminum tube to the positioning fixture, it further includes applying a primer to the surface of the aluminum tube using a glue stick, and printing on the surface of the aluminum tube using a glue stick, so that image information is printed on the surface of the aluminum tube.

7. The method for preparing an aluminum package according to claim 6, It is characterized in that After the printing process, it further includes applying varnish to the surface of the aluminum tube using a glue stick.

8. An aluminum package, It is characterized in that It is obtained by the preparation method according to any one of claims 5 to 7.

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