A threaded head assembly for preparing special-shaped tin bottles and cans

Abstract

The present invention discloses a threaded head assembly for preparing special-shaped tinplate bottles and cans, which includes a mandrel body. The top of the mandrel body is connected to an upper cover shell through an upper shaft sleeve. The bottom of the upper cover shell is provided with an upper rotating disc. An elevating shaft is arranged on the outer side of the mandrel body at the bottom of the upper shaft sleeve. The lower end of the elevating shaft is connected to a driving mechanism. An upper gear is arranged inside the upper cover shell on the outer side of the upper shaft sleeve. An inner shaft upper gear is arranged inside the upper cover shell on one side of the upper gear. The inner shaft upper gear and the upper gear are meshed with each other. An outer shaft small gear is arranged inside the upper cover shell at the bottom of the inner shaft upper gear. By setting a series of structures, the present invention ensures that the number of turns of the threaded head assembly when rotating one week around the common axis of the work station is an integer number of turns; at the same time, it also ensures that the number of turns of the threaded inner die (shaft) when rotating one week around the common axis of the work station is an integer number of turns, so as to meet the uniqueness of the angular positions of the threaded head housing, the inner die, and the outer die when at a certain determined angle with respect to the zero-degree reference line of the common axis of the work station.

Description

Technical Field

[0001] The present invention relates to the technical field of screw mouth forming, and specifically to a screw head assembly for preparing special-shaped tinplate bottles and cans. Background Art

[0002] When preparing special-shaped tinplate bottles and cans, a screw head assembly is used for processing. The existing screw head assembly uses inner and outer molds, coaxial gears, and related gear transmission chains, which can achieve pure rolling between the inner and outer molds (as long as the number of teeth of the coaxial gears of the inner and outer molds is 1:1; and the pitch diameters of the inner and outer mold threads are 1:1).

[0003] The existing screw head assembly has the problem that the inner and outer molds and coaxial gears cannot be driven by external force forcibly, but can only be driven by friction, resulting in the following consequences of the existing screw head assembly:

[0004] A. During the whole working process, especially at the starting and ending segments, it will slip due to insufficient friction, causing the thread shape of the bottle or can to deviate from the set standard or be scratched, and due to the discontinuous and non-smooth thread shape, the opening torque is too large or even seriously exceeds the standard;

[0005] B. If the required thread depth is shallow, it will also slip due to insufficient friction during the whole working process, especially at the starting and ending segments, causing the thread shape of the bottle or can to deviate from the set standard or be scratched, and due to the discontinuous and non-smooth thread shape, the opening torque is too large or even seriously exceeds the standard;

[0006] C. Due to the lack of external force for forced driving, at the inlet position of the working station or any other position, the relative angle between the inner and outer molds is not fixed, making it difficult to check and control the quality with a fixed data. Summary of the Invention

[0007] The purpose of the present invention is to provide a screw head assembly for preparing special-shaped tinplate bottles and cans, so as to solve the problems raised in the above background art.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a threaded head assembly for preparing horse-mouth special-shaped bottles and cans, comprising a core shaft body, the top of the core shaft body is connected to the upper cover shell through an upper sleeve, the bottom of the upper cover shell is provided with an upper rotating disk, the outer side of the core shaft body at the bottom of the upper sleeve is provided with a lifting shaft, the lower end of the lifting shaft is connected to a driving mechanism, an upper gear is provided inside the upper cover shell outside the upper sleeve, an inner shaft upper gear is provided inside the upper cover shell on one side of the upper gear, and a meshing arrangement is provided between the inner shaft upper gear and the upper gear. An outer shaft pinion is arranged in the upper cover shell at the bottom of the inner shaft upper gear, an inner gear ring is arranged in the upper cover shell outside the outer shaft pinion, the inner gear ring is meshing with the outer shaft pinion, an inner shaft body is arranged at the bottom of the inner shaft upper gear, the bottom of the inner shaft body passes through the outer shaft pinion, the upper rotating disk is connected to one end of the connecting shaft through a No. 1 key, the other end of the connecting shaft is connected to the top of the inner mold shaft through a coupling, a connecting piece is arranged on the outside of the connecting shaft and the coupling, and the bottom of the inner mold shaft is connected to the inner mold body.

[0009] Preferably, the upper gear is Z132, and the gear on the inner shaft is Z22, so that the inner shaft transmission ratio between the upper gear and the gear on the inner shaft is 132 / 22=6.

[0010] Preferably, the inner gear ring is Z186, and the outer shaft pinion is Z31, so that the inner shaft transmission ratio between the inner gear ring and the outer shaft pinion is 186 / 31=6.

[0011] Preferably, the coupling is of a cross spacer ring type or a cross slider type, and the coupling compensates for misalignment between the connecting shaft and the inner mold shaft caused by radial movement of the inner mold.

[0012] Preferably, the inner mold body and the inner mold shaft are detachably mounted, and a horse-mouth shaped bottle and can workbench is provided directly below the inner mold body, and a clamp is provided on the workbench.

[0013] Preferably, the gear on the inner shaft and the inner shaft body are fixedly installed by internal assembly bolts, and the upper sleeve and the core shaft body are fixed by bolts.

[0014] .Preferably, the inner shaft body is arranged with a hollow shaft rod structure, and a wear-resistant sleeve is provided on the outer side of the inner shaft body.

[0015] Preferably, the driving mechanism includes a lower gear, a lower rotating body, a vertical shaft, a No. 2 key and a core shaft sleeve. The lower end of the outer side of the lifting shaft is provided with a core shaft sleeve. The core shaft sleeve and the lifting shaft are connected by the No. 2 key. The lower end of the core shaft body is connected to the vertical shaft by a key. The outer side of the vertical shaft is provided with a lower rotating body, and the bottom of the lower rotating body is provided with a lower gear.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The threaded head assembly for preparing horse-mouth special-shaped bottles and cans is used for preparing horse-mouth special-shaped bottles and cans through the inner mold body that is set. The inner mold body cooperates with the upper gear, the inner shaft upper gear, the outer shaft pinion, the inner gear ring, the inner shaft body, the No. 1 key, the connecting shaft, the coupling and the inner mold shaft on the threaded head assembly. The coupling (cross spacer ring type or cross slider type) is used to compensate for the misalignment between the connecting shaft and the inner mold shaft caused by the radial movement of the inner mold. The structure of the inner shaft body, the No. 1 key, and the connecting shaft is used to compensate for the existing hollow shaft moving up and down under the drive of the cylindrical cam, thereby driving the inner shaft body to move up and down, causing the axial position between the inner shaft body and the connecting shaft (the axial position is stationary relative to the ground) to change; the inner shaft transmission ratio between the upper gear and the inner shaft upper gear is 132 / 22=6, and the inner shaft transmission ratio between the inner gear ring and the outer shaft pinion is 186 / 31=6, thereby ensuring that the number of turns of the threaded head assembly when it rotates around the common axis of the workstation is an integer; at the same time, it also ensures that the number of turns of the threaded inner mold (shaft) when it rotates around the common axis of the workstation is an integer, thereby satisfying the uniqueness of the angular position of the threaded head housing, the inner mold, and the outer mold when any zero-degree reference line relative to the common axis of the workstation is at a certain angle;

[0018] 1. During the whole working process, the invention will not slip due to insufficient friction, causing the bottle thread shape to deviate from the set standard or be scratched, whether at the starting and ending sections or at any position, nor will it cause the opening torque to be too large or even seriously exceed the standard due to the discontinuous and rough thread shape;

[0019] 2. No matter how shallow the thread depth is, the present invention will not cause the bottle thread shape to deviate from the set standard or be scratched due to insufficient friction during the entire working process, especially at the beginning and end stages, and the opening torque will not be too large or even seriously exceed the standard due to the discontinuous and rough thread shape;

[0020] 3. The present invention is driven by forced drive, so the relative angles of the inner and outer molds are fixed at the inlet position or any other position of the workstation, which is convenient for inspection and quality control with fixed data obtained by calculation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 A partial enlarged view of middle A;

[0023] Figure 3 For the present invention Figure 1 A partial enlarged view of B in the middle;

[0024] Figure 4 It is a structural schematic diagram of the existing thread head assembly in the present invention.

[0025] In the figure: 1. upper gear; 2. inner shaft upper gear; 3. outer shaft small gear; 4. internal gear ring; 5. inner shaft body; 6. No. 1 key; 7. connecting shaft; 8. connecting piece; 9. coupling; 10. inner die shaft; 11. inner die body; 12. lower gear; 13. lower rotating body; 14. vertical shaft; 15. No. 2 key; 16. core shaft sleeve; 17. core shaft body; 18. lifting shaft; 19. upper rotating disc; 20. upper cover; 21. upper shaft sleeve; 22. internal gear; 23. gear; 24. hollow shaft. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0027] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0029] Embodiment

[0030] As Figures 1 to 4As shown in the figure, the threaded head assembly for preparing the special-shaped tinplate bottle or can in this embodiment includes a mandrel body 17. The top of the mandrel body 17 is connected to an upper cover shell 20 through an upper shaft sleeve 21. A top rotating disk 19 is provided at the bottom of the upper cover shell 20. A lifting shaft 18 is provided on the outer side of the mandrel body 17 at the bottom of the upper shaft sleeve 21. The lower end of the lifting shaft 18 is connected to a driving mechanism. An upper gear 1 is provided inside the upper cover shell 20 on the outer side of the upper shaft sleeve 21. An inner shaft upper gear 2 is provided inside the upper cover shell 20 on one side of the upper gear 1. The inner shaft upper gear 2 and the upper gear 1 are meshed. An outer shaft small gear 3 is provided inside the upper cover shell 20 at the bottom of the inner shaft upper gear 2. An internal gear ring 4 is provided inside the upper cover shell 20 on the outer side of the outer shaft small gear 3. The internal gear ring 4 and the outer shaft small gear 3 are meshed. An inner shaft body 5 is provided at the bottom of the inner shaft upper gear 2. The bottom of the inner shaft body 5 penetrates through the outer shaft small gear 3 and the top rotating disk 19 and is connected to one end of a connecting shaft 7 through a first key 6. The other end of the connecting shaft 7 is connected to the top of an inner die shaft 10 through a coupling 9. A connecting member 8 is provided on the outer sides of the connecting shaft 7 and the coupling 9. The bottom of the inner die shaft 10 is connected to an inner die body 11. On the basis of the existing threaded head assembly for preparing the special-shaped tinplate bottle or can, the upper gear 1, the inner shaft upper gear 2, the outer shaft small gear 3, the internal gear ring 4, the inner shaft body 5, the first key 6, the connecting shaft 7, and the coupling 9 are adopted to replace the traditional internal gear and the self-rotation of gear meshing, solving the defects of the existing threaded head assembly, such as insufficient friction causing slipping, resulting in discontinuous and non-smooth thread shapes, no external force for forced driving, and non-fixed relative angles between the inner and outer dies.

[0031] Specifically, the upper gear 1 is Z132, and the inner shaft upper gear 2 is Z22, obtaining an internal shaft transmission ratio between the upper gear 1 and the inner shaft upper gear 2 of 132 / 22 = 6.

[0032] Furthermore, the internal gear ring 4 is Z186, and the outer shaft small gear 3 is Z31, obtaining an internal shaft transmission ratio between the internal gear ring 4 and the outer shaft small gear 3 of 186 / 31 = 6, thereby ensuring that the number of turns of the threaded head assembly when rotating one week around the common axis of the work station is an integer number of turns; at the same time, it also ensures that the number of turns of the threaded inner die (shaft) when rotating one week around the common axis of the work station is an integer number of turns, so as to meet the uniqueness of the angular positions of the threaded head housing, the inner die, and the outer die when at a certain determined angle with respect to the zero-degree reference line of the common axis of the work station.

[0033] Furthermore, the coupling 9 adopts one of the cross spacer ring type or the cross slider type. The coupling 9 compensates for the non-alignment between the connecting shaft 7 and the inner die shaft 10 caused by the radial movement of the inner die, and is used to compensate for the non-alignment between the connecting shaft 7 and the inner die shaft 10 caused by the radial movement of the inner die.

[0034] Furthermore, the inner die body 11 and the inner die shaft 10 are detachably installed. A special-shaped tinplate bottle or can work station table is provided directly below the inner die body 11. A fixture is provided on the work station table, and the inner die body 11 is aligned with the special-shaped tinplate bottle or can clamped on the work station table.

[0035] Further, the gear 2 on the inner shaft is fixedly installed between the inner shaft body 5 through inner assembly bolts, and the upper shaft sleeve 21 and the core shaft body 17 are fixed by bolts, with firm fixation and being detachable.

[0036] Further, the inner shaft body 5 is arranged in a hollow shaft rod structure, and a wear-resistant shaft sleeve is provided on the outer side of the inner shaft body 5 for protecting the inner shaft body 5.

[0037] Further, the driving mechanism includes a lower gear 12, a lower rotating body 13, a vertical shaft 14, a second key 15 and a core shaft sleeve 16. A core shaft sleeve 16 is provided at the lower end outside the lifting shaft 18, and the core shaft sleeve 16 and the lifting shaft 18 are connected through the second key 15. The lower end of the core shaft body 17 is connected to the vertical shaft 14 through a key. A lower rotating body 13 is provided on the outer side of the vertical shaft 14, and a lower gear 12 is provided at the bottom of the lower rotating body 13, and it is driven by an existing threaded head assembly.

[0038] The usage method of this embodiment is as follows: Based on the existing threaded head assembly for preparing special-shaped tinplate bottles and cans, the upper gear 1, the upper gear on the inner shaft 2, the small gear on the outer shaft 3, the internal gear ring 4, the inner shaft body 5, the first key 6, the connecting shaft 7, and the coupling 9 are used to replace the meshing and self-rotation of the traditional internal gear 22 and gear 23. The inner shaft body 5 is driven by the new upper gear 1 and the upper gear on the inner shaft 2, and then the connecting shaft 7 is driven by the first key 6. The connecting shaft 7 drives the inner die shaft 10 and the inner die body 11 fixed on it through the coupling 9. At the same time, the coupling 9 (cross spacer ring type or cross slider type) is used to compensate for the non-alignment between the connecting shaft 7 and the inner die shaft 10 caused by the radial movement of the inner die. The structures of the inner shaft body 5, the first key 6, and the connecting shaft 7 are used to compensate for the up and down movement of the existing hollow shaft 24 driven by the cylindrical cam, thereby driving the up and down movement of the inner shaft body 5, and causing changes in the axial position between the inner shaft body 5 and the connecting shaft 7 (the axial position is stationary relative to the ground); the upper gear 1 is Z132, the upper gear on the inner shaft 2 is Z22, and the internal transmission ratio between the upper gear 1 and the upper gear on the inner shaft 2 is 132 / 22 = 6. The internal gear ring 4 is Z186, the small gear on the outer shaft 3 is Z31, and the internal transmission ratio between the internal gear ring 4 and the small gear on the outer shaft 3 is 186 / 31 = 6. This ensures that the number of turns of the threaded head assembly when rotating one week around the common axis of the station is an integer; at the same time, it also ensures that the number of turns of the internal threaded die (shaft) when rotating one week around the common axis of the station is an integer, so as to meet the uniqueness of the angular positions of the threaded head housing, the internal die, and the external die at a certain determined angle with respect to the zero-degree reference line of the common axis of the station. It solves the problems existing in the existing threaded head assembly that during the entire working process, especially at the starting and ending segments, it will slip due to insufficient friction, resulting in the deviation of the bottle and can thread shape from the set standard or abrasion, and due to the discontinuous and non-smooth thread shape, the opening torque is too large or even seriously exceeds the standard; if the required thread depth is shallow, it will also slip due to insufficient friction during the entire working process, especially at the starting and ending segments, resulting in the deviation of the bottle and can thread shape from the set standard or abrasion, and due to the discontinuous and non-smooth thread shape, the opening torque is too large or even seriously exceeds the standard; due to the lack of external forced drive, at the inlet position of the station or any other position, the relative angle between the internal and external dies is not fixed, making it difficult to check and control the quality with a fixed data. Therefore, in the entire working process of the present invention, whether at the starting and ending segments or at any position, it will not slip due to insufficient friction, resulting in the deviation of the bottle and can thread shape from the set standard or abrasion, nor will it cause the opening torque to be too large or even seriously exceed the standard due to the discontinuous and non-smooth thread shape; no matter how shallow the required thread depth is, it will not slip due to insufficient friction during the entire working process, especially at the starting and ending segments, resulting in the deviation of the bottle and can thread shape from the set standard or abrasion, and due to the discontinuous and non-smooth thread shape, the opening torque is too large or even seriously exceeds the standard;Since it is a transmission under forced drive, the relative angles of the inner and outer molds are fixed at the inlet position of the working station or any other position, which facilitates inspection and quality control based on the fixed data obtained through calculation.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements on some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A threaded head assembly for preparing special-shaped tinplate bottles and cans, comprising a mandrel body (17), characterized in that: The top of the mandrel body (17) is connected to the upper cover (20) through the upper bushing (21). The bottom of the upper cover (20) is provided with an upper rotating disc (19). An elevating shaft (18) is arranged outside the mandrel body (17) at the bottom of the upper bushing (21). The lower end of the elevating shaft (18) is connected to a driving mechanism. Inside the upper cover (20) outside the upper bushing (21), there is an upper gear (1). Inside the upper cover (20) on one side of the upper gear (1), there is an inner shaft upper gear (2). The inner shaft upper gear (2) is meshed with the upper gear (1). Inside the upper cover (20) at the bottom of the inner shaft upper gear (2), there is an outer shaft small gear (3). Inside the upper cover (20) outside the outer shaft small gear (3), there is an internal gear ring (4). The internal gear ring (4) is meshed with the outer shaft small gear (3). The bottom of the inner shaft upper gear (2) is provided with an inner shaft body (5). The bottom of the inner shaft body (5) penetrates through the outer shaft small gear (3) and the upper rotating disc (19) and is connected to one end of a connecting shaft (7) through a first key (6). The other end of the connecting shaft (7) is connected to the top of an inner die shaft (10) through a coupling (9). A connecting member (8) is arranged outside the connecting shaft (7) and the coupling (9). The bottom of the inner die shaft (10) is connected to an inner die body (11). The coupling (9) adopts one of a cross spacer ring type or a cross slider type. The coupling (9) compensates for the misalignment between the connecting shaft (7) and the inner die shaft (10) caused by the radial movement of the inner die. The inner die body (11) and the inner die shaft (10) are detachably installed. Right below the inner die body (11), there is a tinplate special-shaped bottle and can working station, and a fixture is arranged on the working station.

2. The threaded head assembly for preparing the special-shaped tin bottle or can according to claim 1, wherein: The upper gear (1) is Z132, and the inner shaft upper gear (2) is Z22. The internal shaft transmission ratio between the upper gear (1) and the inner shaft upper gear (2) is 132 / 22 = 6.

3. The threaded head assembly for preparing the special-shaped tin bottle and can according to claim 1, wherein: The internal gear ring (4) is Z186, and the outer shaft small gear (3) is Z31. The internal shaft transmission ratio between the internal gear ring (4) and the outer shaft small gear (3) is 186 / 31 = 6.

4. The threaded head assembly for preparing a horse-mouth shaped bottle according to claim 1, characterized in that: The inner shaft upper gear (2) and the inner shaft body (5) are fixedly installed through inner assembly bolts. The upper bushing (21) and the mandrel body (17) are fixed through bolts.

5. A threaded head assembly for preparing a special-shaped tin bottle or can according to claim 1, characterized in that: The inner shaft body (5) is arranged in a hollow shaft rod structure, and a wear-resistant bushing is arranged outside the inner shaft body (5).

6. The threaded head assembly for preparing the special-shaped tin bottle or can according to claim 1, wherein: The driving mechanism includes a lower gear (12), a lower rotating body (13), a vertical shaft (14), a second key (15), and a mandrel bushing (16). A mandrel bushing (16) is arranged at the lower end outside the elevating shaft (18). The mandrel bushing (16) and the elevating shaft (18) are connected through a second key (15). The lower end of the mandrel body (17) is connected to the vertical shaft (14) through a key. A lower rotating body (13) is arranged outside the vertical shaft (14), and a lower gear (12) is arranged at the bottom of the lower rotating body (13).

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