Packaging aluminum hose with cover easy to screw

Abstract

The utility model discloses an aluminum hose easy to screw and cover for packaging, which comprises an aluminum hose body and a cover body, the aluminum hose body is formed by connecting a hose body, a hose shoulder and a hose nozzle in sequence, the inner side of the cover body is provided with internal threads, the hose nozzle is externally buckled or in interference connection with an external thread bushing, the external thread bushing is formed by injection molding, and the cover body is in threaded connection with the external thread bushing through the internal threads. According to the utility model, threads do not need to be directly processed on the pipe nozzle of the aluminum hose body, and the external thread sleeve fixedly matched with the aluminum hose body is sleeved on the pipe nozzle, so that the abrasion of a threading tool is avoided, and the yield is improved; in addition, the external thread sleeve is formed through injection molding, the uniformity of parts is high, threads are more standard, and the cover body can be easily screwed in during follow-up automatic assembly. And in addition, the external thread sleeve is independently produced, the feeding process during thread turning is omitted during production of the aluminum hose, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to an aluminum hose for packaging, in particular to an aluminum hose for packaging with an easy-to-twist cap. Background Art

[0002] The aluminum hose has the characteristic of not rebounding after extrusion, preventing external air from being inhaled during rebounding. Therefore, it has become a widely used packaging container. As shown in Figure 7 , the current aluminum hose includes an aluminum hose body 1, which is successively connected by a tube body 11, a tube shoulder 12 and a tube nozzle 13. An external thread 10 is processed on the outer periphery of the tube nozzle by a turning tool 4 and is connected to the cap body through this external thread; the aluminum hose is sleeved outside the rotating shaft in its production equipment and is driven by the rotating shaft to rotate in the direction of the R arrow. The turning tool moves in the direction of the H arrow to contact the surface of the tube nozzle and moves in the direction of the L arrow, so as to turn an external thread on the outer periphery of the tube nozzle. Since the turning tool will wear, the consistency of the processed aluminum hose is poor, which is mainly reflected in the non-uniform external thread. When there is an obvious deviation in the external thread, it is difficult to screw the cap body in; moreover, the forming and capping of the aluminum hose are all completed by automated equipment. The replacement and maintenance of the turning tool have a great impact on production. In addition, once the problem of the external thread is not discovered in time, a large number of products will be scrapped. Summary of the Utility Model

[0003] The purpose of the utility model is to provide an aluminum hose for packaging with an easy-to-twist cap, which has a simple and reasonable structure and standardized external threads on the tube nozzle.

[0004] The purpose of the utility model is achieved as follows:

[0005] An aluminum hose for packaging with an easy-to-twist cap includes an aluminum hose body and a cap body. The aluminum hose body is successively connected by a tube body, a tube shoulder and a tube nozzle. An internal thread is provided on the inner side of the cap body. An external thread sleeve is buckled or interference-fitted outside the tube nozzle. The external thread sleeve is injection-molded. The cap body is screwed to the external thread sleeve through the internal thread.

[0006] The purpose of the utility model can also be solved by the following technical measures:

[0007] As a more specific solution, anti-rotation clamping teeth are also stamped on the outer periphery of the tube nozzle, and the anti-rotation clamping teeth point along the axis direction of the tube nozzle; tooth grooves corresponding to the anti-rotation clamping teeth are provided on the inner wall of the external thread sleeve, and the tooth grooves are inserted and matched with the anti-rotation clamping teeth.

[0008] As a further solution, a chamfer is provided at one end of the anti-rotation clamping teeth facing the end of the tube nozzle.

[0009] As a further solution, a buckle and an annular groove are successively arranged on the outer periphery of the nozzle corresponding to the anti-rotation teeth and the pipe shoulder; an annular slot and a convex ring are respectively arranged on the inner wall of the external thread sleeve corresponding to the buckle and the annular groove, and the annular slot and the convex ring are respectively buckled with the buckle and the annular groove.

[0010] As a further solution, the buckle is annular, and a guiding inclined surface is arranged on its outer side.

[0011] As a further solution, a reinforcing annular step is arranged on the outer periphery of the nozzle corresponding to the annular groove and the pipe shoulder, and an annular protrusion is arranged on the inner side of the nozzle corresponding to the back of the buckle.

[0012] As a further solution, a sinking groove is arranged at the end of the nozzle, and an easily broken aluminum foil layer for blocking the nozzle is arranged at the center of the sinking groove. The thickness of the easily broken aluminum foil layer is smaller than the wall thickness of the pipe body; the wall thickness of the nozzle is greater than the wall thickness of the pipe shoulder, and the wall thickness of the pipe shoulder is greater than the wall thickness of the pipe body.

[0013] As a further solution, an inward flanging is arranged at the outer end of the external thread sleeve, and the inner diameter of the inward flanging is greater than or equal to the diameter of the easily broken aluminum foil layer; a ring seat is arranged at the inner end of the external thread sleeve, and the ring seat abuts against the pipe shoulder.

[0014] As a further solution, the cover body is a double-layer cover body with a sandwich on the side wall, and reinforcing ribs are arranged in the sandwich of the cover body; a protective positioning groove is arranged on the end face of the cover body, a puncturing cone protrudes from the bottom surface of the protective positioning groove, the depth of the protective positioning groove is greater than the height of the puncturing cone, and the inner diameter of the protective positioning groove is greater than or equal to the outer diameter of the external thread sleeve.

[0015] As a further solution, two layers of protective coatings are arranged on the inner wall of the aluminum hose body.

[0016] The beneficial effects of the present utility model are as follows:

[0017] In the present utility model, the nozzle of the aluminum hose body does not need to be directly processed with threads. Instead, an external thread sleeve that is fixedly matched with it is sleeved, which avoids the wear of the threading tool and improves the yield rate; in addition, the external thread sleeve is injection molded, and the unity of its parts is strong. Moreover, the threads are more standard, which helps the cover body to be easily screwed in during subsequent automatic assembly; furthermore, the external thread sleeve is independently produced, and the process of feeding the tool during threading is eliminated during the production of the aluminum hose, greatly improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic cross-sectional and exploded structural view of an embodiment of the present utility model.

[0019] Figure 2 is Figure 1 a schematic structural view after assembly.

[0020] Figure 3 is Figure 2 The enlarged structural schematic diagram at position A in

[0021] Figure 4 This is the exploded structural schematic diagram of the aluminum hose body and the external thread sleeve in the present utility model.

[0022] Figure 5 is Figure 4 The structural schematic diagram after assembly.

[0023] Figure 6 This is the top view structural schematic diagram of the aluminum hose body in the present utility model.

[0024] Figure 7 is the structural schematic diagram of an aluminum hose and its processing principle in the prior art. Specific embodiments

[0025] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Refer to Figures 1 to 6 As shown, an aluminum hose for an easy - twist cap package includes an aluminum hose body 1 and a cap body 3. The aluminum hose body 1 is sequentially connected by a tube body 11, a tube shoulder 12, and a tube nozzle 13. An internal thread 31 is provided on the inner side of the cap body 3. An external thread sleeve 2 is snap - connected or interference - connected outside the tube nozzle 13. The external thread sleeve 2 is injection - molded. The cap body 3 is screwed to the external thread sleeve 2 through the internal thread 31.

[0027] Anti - rotation clamping teeth 17 are also formed by stamping on the outer periphery of the tube nozzle 13. The anti - rotation clamping teeth 17 point along the axis direction of the tube nozzle 13. Tooth grooves 22 corresponding to the anti - rotation clamping teeth 17 are provided on the inner wall of the external thread sleeve 2. The tooth grooves 22 are inserted and matched with the anti - rotation clamping teeth 17 to prevent relative circumferential rotation between the tube nozzle 13 and the external thread sleeve 2.

[0028] One end of the anti - rotation clamping teeth 17 facing the end of the tube nozzle 13 is provided with a chamfer. The chamfer has a certain guiding effect, making it easier for the external thread sleeve 2 to be sleeved outside the tube nozzle 13 during the automatic assembly process.

[0029] A convex buckle 14 and an annular groove 15 are sequentially provided on the outer periphery of the tube nozzle 13 between the anti - rotation clamping teeth 17 and the tube shoulder 12. Annular clamping grooves 25 and convex rings 21 corresponding to the convex buckle 14 and the annular groove 15 are respectively provided on the inner wall of the external thread sleeve 2. The annular clamping grooves 25 and the convex rings 21 are respectively snapped with the convex buckle 14 and the annular groove 15.

[0030] The convex buckle 14 is annular, and a guiding inclined surface is provided on its outer side.

[0031] On the outer periphery of the nozzle 13, a reinforcing annular step 18 is provided corresponding to the annular groove 15 between the nozzle shoulder 12. On the inner side of the nozzle 13, an annular protrusion 131 is provided corresponding to the back surface of the snap button 14. When the external thread sleeve 2 is sleeved outside the nozzle 13, the convex ring 21 of the external thread sleeve 2 contacts the snap button 14 of the nozzle 13. Under the guiding action of the guiding inclined surface and the strengthening action of the reinforcing annular step 18, deformation of the nozzle 13 is prevented, while the convex ring 21 of the external thread sleeve 2 is deformed and slides over the snap button 14 and falls into the annular groove 15. At the same time, the annular clamping groove 25 of the external thread sleeve 2 cooperates with the snap button 14 to play an anti-disengagement role.

[0032] A sunk groove 132 is provided at the end of the nozzle 13. At the center of the sunk groove 132, an easily breakable aluminum foil layer 16 for plugging the nozzle 13 is provided. The thickness of the easily breakable aluminum foil layer 16 is less than the wall thickness of the pipe body 11; the wall thickness of the nozzle 13 is greater than the wall thickness of the nozzle shoulder 12, and the wall thickness of the nozzle shoulder 12 is greater than the wall thickness of the pipe body 11.

[0033] An inward flanging 23 is provided at the outer end of the external thread sleeve 2. The inner diameter of the inward flanging 23 is greater than or equal to the diameter of the easily breakable aluminum foil layer 16; a ring seat 24 is provided at the inner end of the external thread sleeve 2, and the ring seat 24 abuts against the nozzle shoulder 12.

[0034] The cover body 3 is a double-layer cover body 3 with a sandwich layer 32 on the side wall. Reinforcing ribs 35 are provided in the sandwich layer 32 of the cover body 3; a protective positioning groove 33 is provided on the end face of the cover body 3. A puncturing cone 34 protrudes from the bottom surface of the protective positioning groove 33. The depth of the protective positioning groove 33 is greater than the height of the puncturing cone 34, and the inner diameter of the protective positioning groove 33 is greater than or equal to the outer diameter of the external thread sleeve 2.

[0035] Two protective coatings 19 are provided on the inner wall of the aluminum hose body 1. The protective coatings 19 can prevent the object filled in the aluminum hose body 1 from contacting the aluminum material of the aluminum hose body 1 and generating chemical reactions.

[0036] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An aluminum hose for easy-to-twist cap packaging, comprising an aluminum hose body (1) and a cap body (3). The aluminum hose body (1) is sequentially connected by a tube body (11), a tube shoulder (12) and a tube nozzle (13). An internal thread (31) is provided on the inner side of the cap body (3), and it is characterized in that: An external thread sleeve (2) is externally buckled or press-fitted to the nozzle (13). The external thread sleeve (2) is injection-molded, and the cover body (3) is screwed to the external thread sleeve (2) through an internal thread (31).

2. The aluminum hose for twist-off cap packaging according to claim 1, characterized in that: Anti-rotation clamping teeth (17) are also formed by stamping on the outer periphery of the nozzle (13). The anti-rotation clamping teeth (17) point along the axial direction of the nozzle (13). Tooth grooves (22) corresponding to the anti-rotation clamping teeth (17) are provided on the inner wall of the external thread sleeve (2), and the tooth grooves (22) are in plug-in fit with the anti-rotation clamping teeth (17).

3. The aluminum hose for twist-off cap packaging according to claim 2, wherein: A chamfer is provided at one end of the anti-rotation clamping teeth (17) facing the end of the nozzle (13).

4. The aluminum hose for twist-off cap packaging according to claim 2, characterized in that: A convex buckle (14) and an annular groove (15) are sequentially provided on the outer periphery of the nozzle (13) between the anti-rotation clamping teeth (17) and the pipe shoulder (12). An annular clamping groove (25) and a convex ring (21) are respectively provided on the inner wall of the external thread sleeve (2) corresponding to the convex buckle (14) and the annular groove (15), and the annular clamping groove (25) and the convex ring (21) are respectively buckled to the convex buckle (14) and the annular groove (15).

5. The aluminum hose for twist-off cap packaging according to claim 4, wherein: The convex buckle (14) is annular, and a guiding inclined surface is provided on its outer side.

6. The aluminum hose for twist-off cap packaging according to claim 4, wherein: A reinforcing annular step (18) is provided on the outer periphery of the nozzle (13) between the annular groove (15) and the pipe shoulder (12), and an annular protrusion (131) is provided on the inner side of the nozzle (13) corresponding to the back surface of the convex buckle (14).

7. The aluminum hose for twist-off cap packaging according to claim 1, wherein: A counterbore (132) is provided at the end of the nozzle (13). An easily breakable aluminum foil layer (16) for sealing the nozzle (13) is provided at the center of the counterbore (132). The thickness of the easily breakable aluminum foil layer (16) is less than the wall thickness of the pipe body (11). The wall thickness of the nozzle (13) is greater than the wall thickness of the pipe shoulder (12), and the wall thickness of the pipe shoulder (12) is greater than the wall thickness of the pipe body (11).

8. The aluminum hose for twist-off cap packaging according to claim 7, characterized in that: An inward flange (23) is provided at the outer end of the external thread sleeve (2), and the inner diameter of the inward flange (23) is greater than or equal to the diameter of the easily breakable aluminum foil layer (16). A ring seat (24) is provided at the inner end of the external thread sleeve (2), and the ring seat (24) abuts against the pipe shoulder (12).

9. The aluminum hose for twist-off cap packaging according to claim 7, characterized in that: The cover body (3) is a double-layer cover body (3) with a sandwich layer (32) on the side wall. Reinforcing ribs (35) are provided in the sandwich layer (32) of the cover body (3). A protective positioning groove (33) is provided on the end face of the cover body (3). A puncturing cone (34) protrudes from the bottom surface of the protective positioning groove (33). The depth of the protective positioning groove (33) is greater than the height of the puncturing cone (34), and the inner diameter of the protective positioning groove (33) is greater than or equal to the outer diameter of the external thread sleeve (2).

10. The aluminum hose for easy-twist cap packaging according to claim 1, wherein: Two layers of protective coatings (19) are provided on the inner wall of the aluminum hose body (1).

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