Lipstick / lip glaze cover and inner cover assembling and aligning equipment

By designing an assembly and alignment device for lipstick/lip gloss caps and inner caps, automated assembly was achieved, solving the problems of low efficiency and inconsistent quality in the assembly process, improving production efficiency and quality, and reducing costs.

CN120941749APending Publication Date: 2025-11-14SUZHOU HAIMING PACKAGING TECH CO LTD
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Patent Information

Application Number
CN202510928047.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-07
Publication Date
2025-11-14

AI Technical Summary

Technical Problem

The assembly process of lipstick/lip gloss caps and inner caps suffers from low production efficiency, inconsistent quality, easy rework, and increased costs.

Method used

A lipstick/lip gloss cap and inner cap assembly alignment device was designed, including a rotating platform, an outer cap feeding mechanism, a vision inspection mechanism, a 3M dispensing mechanism, a hot melt dispensing mechanism, an inner cap dual-workstation displacement loading mechanism, an electric cylinder pressing mechanism, and an assembly component unloading mechanism, to achieve fully automated assembly.

Benefits of technology

It improved production efficiency and quality consistency, reduced defect rates, and lowered production costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses lipstick / lip glaze cover and inner cover assembling and aligning equipment which comprises a workbench, a rotary circular truncated cone is arranged on the workbench, and an outer cover feeding mechanism, a visual detection mechanism, a 3M dispensing mechanism, a fuse machine dispensing mechanism, an inner cover duplex displacement loading mechanism, an electric cylinder pressing mechanism and an assembly part discharging mechanism are sequentially arranged on the peripheral side of the rotary circular truncated cone. A positioning table is arranged in the rotary circular table, a plurality of infrared sensors are arranged on the positioning table, an outer cover conveying mechanism is arranged on the end side of the outer cover feeding mechanism, and an inner cover conveying mechanism is arranged on the end side of the inner cover duplex displacement loading mechanism; a finished product discharging and conveying mechanism is arranged between the assembly part discharging mechanism and the electric cylinder pressing mechanism, and an inner cover appearance detection mechanism is arranged between the inner cover double-station displacement loading mechanism and the inner cover conveying mechanism. Automatic alignment and automatic assembly are achieved in the whole process, and the production efficiency and the production quality are greatly improved.
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Description

Technical Field

[0001] This invention belongs to the field of assembly equipment technology, and particularly relates to an assembly and alignment device for lipstick / lip gloss caps and inner caps. Background Technology

[0002] In the cosmetics manufacturing industry, lipsticks and lip glosses are popular categories with continuously rising market demand. However, in the production process, the assembly of the lipstick / lip gloss cap and inner cap has become a bottleneck restricting overall production efficiency.

[0003] Because installing the inner cover between the outer cover and the inner cover requires multiple steps such as applying glue, melting glue, pasting, and pressing, it is currently still done manually. From a production speed perspective, manual assembly has a clear upper limit. Even a skilled worker assembling a single cover and inner cover, with smooth movements, still takes time. Differences in worker techniques and skill levels directly lead to inconsistent assembly quality; some workers may assemble tightly, while others may leave gaps, affecting the product's sealing and appearance. Furthermore, manual operation makes it difficult to guarantee the precision of every assembly action, and prolonged repetitive work can easily lead to worker fatigue, increasing the defect rate. Once a defective product appears, not only is rework required with additional time and manpower, but it also wastes raw materials and increases production costs. Summary of the Invention

[0004] The purpose of this invention is to provide a lipstick / lip gloss cap and inner cap assembly alignment device to address the problems of low production efficiency, inconsistent production quality, easy rework, and increased costs caused by manual assembly of lipstick / lip gloss caps and inner caps.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lipstick / lip gloss cap and inner cap assembly and alignment device, comprising a worktable on which a rotating round table is provided. The rotating round table is sequentially provided with an outer cap feeding mechanism, a visual inspection mechanism, a 3M dispensing mechanism, a hot melt dispensing mechanism, an inner cap dual-workstation displacement loading mechanism, an electric cylinder pressing mechanism, and an assembly unloading mechanism. The rotating round table contains a positioning platform with several infrared sensors. The outer cap feeding mechanism has an outer cap conveying mechanism at one end, and the inner cap dual-workstation displacement loading mechanism has an inner cap conveying mechanism at one end. A finished product unloading conveying mechanism is provided between the assembly unloading mechanism and the electric cylinder pressing mechanism. An inner cap appearance inspection mechanism is provided between the inner cap dual-workstation displacement loading mechanism and the inner cap conveying mechanism.

[0006] As a further description of the above technical solution:

[0007] The outer cover conveying mechanism, the inner cover conveying mechanism, and the finished product unloading conveying mechanism are all fixed to the workbench by an L-shaped plate. The conveyor belts on the outer cover conveying mechanism and the inner cover conveying mechanism are respectively provided with a number of outer cover limiting bodies and a number of inner cover limiting bodies.

[0008] As a further description of the above technical solution:

[0009] The outer cover feeding mechanism, the inner cover dual-workstation displacement loading mechanism, and the finished product unloading conveying mechanism are all equipped with a supporting conveying structure. The supporting conveying structure consists of several support rods, a fixed plate, and an electric slide. The fixed plate is connected to several of the support rods, and the electric slide is connected to the fixed plate.

[0010] As a further description of the above technical solution:

[0011] The outer cover feeding mechanism includes a first connecting plate, a first telescopic cylinder, and a suction head. The first connecting plate is slidably connected to the electric slide table, the first telescopic cylinder is connected to the first connecting plate, and the suction head is connected to the first telescopic cylinder.

[0012] As a further description of the above technical solution:

[0013] The inner cover dual-work displacement loading mechanism includes a second connecting plate, a plurality of second telescopic cylinders and a plurality of first clamps. The second connecting plate is slidably connected to the electric slide table, the plurality of second telescopic cylinders are connected to the second connecting plate, and the plurality of first clamps are correspondingly connected to the plurality of second telescopic cylinders. The inner wall of the first clamp and the outer wall of the inner cover match each other.

[0014] As a further description of the above technical solution:

[0015] The assembly unloading mechanism includes a third connecting plate, a third telescopic cylinder, and a second clamp. The third connecting plate is connected to the electric slide table, the third telescopic cylinder is connected to the third connecting plate, and the second clamp is connected to the third telescopic cylinder. The inner wall of the second clamp matches the outer wall of the finished product.

[0016] As a further description of the above technical solution:

[0017] The visual inspection mechanism, the 3M dispensing mechanism, the hot melt dispensing mechanism, and the inner cover appearance inspection mechanism are all equipped with a supporting lifting structure. The supporting lifting structure includes a support plate and a sliding table module. The sliding table module is connected to the support plate. The visual inspection mechanism includes a camera. The 3M dispensing mechanism includes a 3M dispensing machine. The hot melt dispensing mechanism includes a hot melt machine. The inner cover appearance inspection mechanism includes an inspection camera. The camera, the 3M dispensing machine, the hot melt machine, and the inspection camera are slidably connected to the sliding table module via guide rails.

[0018] As a further description of the above technical solution:

[0019] The rotating platform is provided with a number of positioning blocks, each with a positioning groove. The outer cover is located in the positioning groove. The number of positioning blocks corresponds to the number of infrared sensors. The positioning blocks and infrared sensors are evenly arranged with the center of the positioning platform as the center.

[0020] As a further description of the above technical solution:

[0021] The electric cylinder pressing mechanism includes a second support rod, a lifting cylinder, and a pressing cylinder. The lifting cylinder is connected to the second support rod via a fourth connecting plate. The pressing cylinder is connected to the lifting cylinder. An abutment groove is provided inside the pressing cylinder. When the inner cover abuts against the abutment groove, the pressing cylinder presses against the outer cover.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In this invention, an outer cover feeding mechanism, a visual inspection mechanism, a 3M dispensing mechanism, a hot melt dispensing mechanism, a brush rod dual-workstation transfer loading mechanism, an electric cylinder pressing mechanism, and an assembly unloading mechanism are sequentially arranged around the circumference of a rotating platform. An outer cover conveying mechanism is located at one end of the outer cover feeding mechanism, a brush rod conveying mechanism is located at one end of the brush rod dual-workstation transfer loading mechanism, a finished product unloading conveying mechanism is located between the assembly unloading mechanism and the electric cylinder pressing mechanism, and a brush rod appearance inspection mechanism is located between the brush rod dual-workstation transfer loading mechanism and the brush rod conveying mechanism. When assembling the outer and inner covers, several outer covers are placed on the outer cover limiting bodies on the outer cover conveying mechanism, and several inner covers are placed on the inner cover limiting bodies on the inner cover conveying mechanism. The outer covers are then conveyed to the outer cover feeding mechanism via the outer cover conveying mechanism, picked up by the suction head, and placed on the rotating platform under the drive of the supporting conveying mechanism. The outer cover limiting bodies stop briefly each time they pass an infrared sensor. The assembly process involves several steps. The outer cover rotates to a vision inspection mechanism, which checks the inside for dirt. It then rotates to a 3M dispensing mechanism for dispensing adhesive, followed by a hot melt dispensing mechanism to heat the adhesive, smoothing its surface for easier inner cover bonding. The inner cover conveyor then transfers the inner cover to a double-clamping mechanism. Two second clamps on this mechanism pick up the inner cover and place it in the outer cover appearance inspection mechanism for inspection. The inspected inner cover is then transferred to the rotating platform inside the outer cover to form an assembly. The finished product is then pressed together by an electric cylinder pressing mechanism. After passing through the bottom of the assembly unloading mechanism, the second clamp picks it up and transfers it to the finished product unloading conveyor mechanism. Any non-compliant inner or outer cover is directly discarded into a waste bin via the second clamp. This fully automated alignment and assembly process significantly improves production efficiency and quality. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional assembly and alignment device for lipstick / lip gloss caps and inner caps. Figure 1 .

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0027] Figure 3 A three-dimensional assembly and alignment device for lipstick / lip gloss caps and inner caps. Figure 2 .

[0028] Figure 4 for Figure 3 Enlarged view of section B in the middle.

[0029] Figure 5 for Figure 3 Enlarged view of point C in the middle.

[0030] Figure 6 A three-dimensional assembly and alignment device for lipstick / lip gloss caps and inner caps. Figure 3 .

[0031] Figure 7 A three-dimensional assembly and alignment device for lipstick / lip gloss caps and inner caps. Figure 4 .

[0032] Legend:

[0033] 1-Workbench; 2-Rotating frustum; 3-Outer cover loading mechanism; 31-First connecting plate; 32-First telescopic cylinder; 33-Suction head; 4-Vision inspection mechanism; 5-3M dispensing mechanism; 6-Hot melt dispensing mechanism; 7-Inner cover double-workstation displacement loading mechanism; 71-Second connecting plate; 72-Second telescopic cylinder; 73-First clamp; 8-Electric cylinder pressing mechanism; 81-Second support rod; 82-Lifting cylinder; 83-Pressure cylinder; 10-Assembly unloading mechanism; 101-Third connecting plate; 102-Third telescopic cylinder Cylinder; 103-Second clamp; 11-Positioning table; 12-Infrared sensor; 13-Outer cover conveying mechanism; 14-Inner cover conveying mechanism; 15-Finished product unloading conveying mechanism; 16-Inner cover appearance inspection mechanism; 17-L-shaped plate; 18-Outer cover limiting body; 19-Inner cover limiting body; 20-Supporting conveying structure; 201-Support rod; 202-Fixing plate; 203-Electric slide table; 21-Supporting lifting structure; 211-Support plate; 212-Support plate; 22-Guide rail; 23-Positioning block; 24-Fourth connecting plate. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0038] In the description of the embodiments of the present invention, it should be noted that the terms "upper" and "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0039] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0040] Please see Figure 1-7This invention provides a technical solution: a lipstick / lip gloss cap and inner cap assembly and alignment device, including a worktable 1, on which a rotating round table 2 is arranged. Around the rotating round table 2, an outer cap feeding mechanism 3, a visual inspection mechanism 4, a 3M dispensing mechanism 5, a hot melt dispensing mechanism 6, an inner cap dual-workstation displacement loading mechanism 7, an electric cylinder pressing mechanism 8, and an assembly component unloading mechanism 10 are arranged sequentially. Inside the rotating round table 2, a positioning platform 11 is arranged, and several infrared sensors 12 are arranged on the positioning platform 11. An outer cap conveying mechanism 13 is arranged at one end of the outer cap feeding mechanism 3, and an inner cap conveying mechanism 14 is arranged at one end of the inner cap dual-workstation displacement loading mechanism 7. A finished product unloading conveying mechanism 15 is arranged between the assembly component unloading mechanism 10 and the electric cylinder pressing mechanism 8, and an inner cap appearance inspection mechanism 16 is arranged between the inner cap dual-workstation displacement loading mechanism 7 and the inner cap conveying mechanism 14.

[0041] The outer cover conveying mechanism 13, the inner cover conveying mechanism 14 and the finished product unloading conveying mechanism 15 are all fixed on the workbench 1 by L-shaped plate 17. The conveyor belts on the outer cover conveying mechanism 13 and the inner cover conveying mechanism 14 are respectively provided with a number of outer cover limiting bodies 18 and a number of inner cover limiting bodies 19.

[0042] The outer cover feeding mechanism 3, the inner cover double-work displacement loading mechanism 7, and the finished product unloading conveying mechanism 15 are all provided with a support conveying structure 20. The support conveying structure 20 has several support rods 201, a fixed plate 202, and an electric slide 203. The fixed plate 202 is connected to several support rods 201, and the electric slide 203 is connected to the fixed plate 202.

[0043] The outer cover feeding mechanism 3 includes a first connecting plate 31, a first telescopic cylinder 32, and a suction head 33. The first connecting plate 31 is slidably connected to the electric slide table 203, the first telescopic cylinder 32 is connected to the first connecting plate 31, and the suction head 33 is connected to the first telescopic cylinder 32.

[0044] The inner cover dual-work displacement loading mechanism 7 includes a second connecting plate 71, a plurality of second telescopic cylinders 72 and a plurality of first clamps 73. The second connecting plate 71 is slidably connected to the electric slide table 203. The plurality of second telescopic cylinders 72 are connected to the second connecting plate 71. The plurality of first clamps 73 are correspondingly connected to the plurality of second telescopic cylinders 72. The inner wall of the first clamp 73 and the outer wall of the inner cover match each other.

[0045] The assembly unloading mechanism 10 includes a third connecting plate, a third telescopic cylinder 102, and a second clamp 103. The third connecting plate is connected to the electric slide table 203, the third telescopic cylinder 102 is connected to the third connecting plate, and the second clamp 103 is connected to the third telescopic cylinder 102. The inner wall of the second clamp 103 matches the outer wall of the finished product.

[0046] The visual inspection mechanism 4, the 3M dispensing mechanism 5, the hot melt dispensing mechanism 6, and the inner cover appearance inspection mechanism 16 are all equipped with a supporting lifting structure 21. The supporting lifting structure 21 includes a support plate 212211 and a sliding table module. The sliding table module is connected to the support plate 212211. The visual inspection mechanism 4 includes a camera, the 3M dispensing mechanism 5 includes a 3M dispensing machine, the hot melt dispensing mechanism 6 includes a hot melt machine, and the inner cover appearance inspection mechanism 16 includes an inspection camera. The camera, the 3M dispensing machine, the hot melt machine, and the inspection camera are slidably connected to the sliding table module via guide rails 22.

[0047] The rotating frustum 2 is provided with a plurality of positioning blocks 23, each with a positioning groove. The outer cover is located within the positioning groove. The number of positioning blocks 23 corresponds to the number of infrared sensors 12. Both the positioning blocks 23 and the infrared sensors 12 are evenly arranged with the center of the positioning platform 11 as the center. This ensures precise alignment between the outer cover and the infrared sensors.

[0048] The electric cylinder pressing mechanism 8 includes a second support rod 81, a lifting cylinder 82, and a pressing cylinder 83. The lifting cylinder 82 is connected to the second support rod 81 via a fourth connecting plate 24. The pressing cylinder 83 is connected to the lifting cylinder 82. The pressing cylinder 83 has an abutment groove. When the inner cover abuts against the abutment groove, the pressing cylinder 83 presses against the outer cover.

[0049] Working Principle: The system consists of a rotating platform with a series of interconnected components: an outer cover feeding mechanism, a vision inspection mechanism, a 3M dispensing mechanism, a hot melt dispensing mechanism, a brush rod dual-workstation transfer mechanism, an electric cylinder pressing mechanism, and an assembly unloading mechanism. An outer cover conveying mechanism is located at one end of the outer cover feeding mechanism, a brush rod conveying mechanism at the other end of the brush rod dual-workstation transfer mechanism, a finished product unloading conveying mechanism between the assembly unloading mechanism and the electric cylinder pressing mechanism, and a brush rod appearance inspection mechanism between the brush rod dual-workstation transfer mechanism and the brush rod conveying mechanism. When assembling outer and inner covers, several outer covers are placed on the outer cover limiting bodies on the outer cover conveying mechanism, and several inner covers are placed on the inner cover limiting bodies on the inner cover conveying mechanism. The outer covers are then conveyed to the outer cover feeding mechanism, where they are picked up by the suction head and placed on the rotating platform under the drive of the supporting conveying mechanism. The outer cover limiting bodies pause briefly each time they pass an infrared sensor. The assembly process involves several steps. When the outer cover rotates to the vision inspection mechanism, it checks the inside for dirt. Then, it rotates to the 3M dispensing mechanism for dispensing adhesive, followed by a hot melt dispensing mechanism to heat the adhesive, smoothing its surface for easier inner cover bonding. The inner cover conveying mechanism then transfers the inner cover to the inner cover double-workstation transfer mechanism. Two second clamps on this mechanism pick up the inner cover and place it in the inner cover appearance inspection mechanism for inspection. The inspected inner cover is then transferred to the outer cover on a rotating platform to form an assembly. The finished product is then pressed together by an electric cylinder pressing mechanism to form the final product. The finished product passes through the bottom of the assembly unloading mechanism, where a second clamp picks it up and transfers it to the finished product unloading conveying mechanism. Any inner or outer cover that does not meet specifications is directly discarded into the waste bin via the second clamp. This fully automated alignment and assembly process significantly improves production efficiency and quality.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A device for assembling and aligning a lipstick / lip gloss cap and inner cap, characterized in that, The device includes a workbench with a rotating platform. Around the rotating platform are sequentially arranged an outer cover feeding mechanism, a visual inspection mechanism, a 3M dispensing mechanism, a hot melt dispensing mechanism, an inner cover dual-workstation transfer loading mechanism, an electric cylinder pressing mechanism, and an assembly unloading mechanism. Inside the rotating platform is a positioning platform with several infrared sensors. An outer cover conveying mechanism is located at one end of the outer cover feeding mechanism, and an inner cover conveying mechanism is located at one end of the inner cover dual-workstation transfer loading mechanism. A finished product unloading conveying mechanism is located between the assembly unloading mechanism and the electric cylinder pressing mechanism. An inner cover appearance inspection mechanism is located between the inner cover dual-workstation transfer loading mechanism and the inner cover conveying mechanism.

2. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 1, characterized in that, The outer cover conveying mechanism, the inner cover conveying mechanism, and the finished product unloading conveying mechanism are all fixed to the workbench by an L-shaped plate. The conveyor belts on the outer cover conveying mechanism and the inner cover conveying mechanism are respectively provided with a number of outer cover limiting bodies and a number of inner cover limiting bodies.

3. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 2, characterized in that, The outer cover feeding mechanism, the inner cover dual-workstation displacement loading mechanism, and the finished product unloading conveying mechanism are all equipped with a supporting conveying structure. The supporting conveying structure consists of several support rods, a fixed plate, and an electric slide. The fixed plate is connected to several of the support rods, and the electric slide is connected to the fixed plate.

4. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 3, characterized in that, The outer cover feeding mechanism includes a first connecting plate, a first telescopic cylinder, and a suction head. The first connecting plate is slidably connected to the electric slide table, the first telescopic cylinder is connected to the first connecting plate, and the suction head is connected to the first telescopic cylinder.

5. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 3, characterized in that, The inner cover dual-work displacement loading mechanism includes a second connecting plate, a plurality of second telescopic cylinders and a plurality of first clamps. The second connecting plate is slidably connected to the electric slide table, the plurality of second telescopic cylinders are connected to the second connecting plate, and the plurality of first clamps are correspondingly connected to the plurality of second telescopic cylinders. The inner wall of the first clamp and the outer wall of the inner cover match each other.

6. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 3, characterized in that... The assembly unloading mechanism includes a third connecting plate, a third telescopic cylinder, and a second clamp. The third connecting plate is connected to the electric slide, the third telescopic cylinder is connected to the third connecting plate, and the second clamp is connected to the third telescopic cylinder. The inner wall of the second clamp matches the outer wall of the finished product.

7. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 1, characterized in that, The visual inspection mechanism, the 3M dispensing mechanism, the hot melt dispensing mechanism, and the inner cover appearance inspection mechanism are all equipped with a supporting lifting structure. The supporting lifting structure includes a support plate and a sliding table module. The sliding table module is connected to the support plate. The visual inspection mechanism includes a camera. The 3M dispensing mechanism includes a 3M dispensing machine. The hot melt dispensing mechanism includes a hot melt machine. The inner cover appearance inspection mechanism includes an inspection camera. The camera, the 3M dispensing machine, the hot melt machine, and the inspection camera are slidably connected to the sliding table module via guide rails.

8. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 1, characterized in that, The rotating platform is provided with a number of positioning blocks, each with a positioning groove. The outer cover is located in the positioning groove. The number of positioning blocks corresponds to the number of infrared sensors. The positioning blocks and infrared sensors are evenly arranged with the center of the positioning platform as the center.

9. The lipstick / lip gloss cap and inner cap assembly and alignment device according to claim 1, characterized in that, The electric cylinder pressing mechanism includes a second support rod, a lifting cylinder, and a pressing cylinder. The lifting cylinder is connected to the second support rod via a fourth connecting plate. The pressing cylinder is connected to the lifting cylinder. An abutment groove is provided inside the pressing cylinder. When the inner cover abuts against the abutment groove, the pressing cylinder presses against the outer cover.