A pen cap automatic assembling machine

Abstract

The utility model discloses a pen cap automatic assembly machine, including the conveyer track of annularly being laid, along the conveyer track one side long side and be equipped with the feeding tray station, the unloading tray station, along the conveyer track other side long side and be equipped with the pen cap clamp feeding transfer mechanism, the press -fitting station, the feeding tray station with the conveyer track between, the unloading tray station with the conveyer track between respectively and be equipped with the feeding and unloading subassembly, the depositing overturn area, the clamping material shifting mechanism, the clamping material shifting mechanism removes and deposits the pen cap pipe in the tray in the feeding tray station to the depositing overturn area, or, the clamping material shifting mechanism removes and deposits the assembly part in the depositing overturn area to the tray in the unloading tray station, to realize the automation of the pen cap pipe, the pen cap clamp assembly constitutes the pen cap, and the assembly speed is promoted, and the production capacity is promoted, and the artificial intensity is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of automatic assembly equipment for injection pens, and in particular to an automatic pen cap assembly machine. Background Technology

[0002] Writing pens, injection pens, and similar items typically include a main pen body for writing or injection, and a pen cap at the output end of the pen body. The pen cap usually has a clip for attaching the pen to a sleeve or pocket.

[0003] To facilitate processing, match pen performance, and enhance visual appeal, pen caps are typically assembled from a cap tube and a cap clip. For example, a pen cap may be assembled from a metal cap tube and a plastic cap clip.

[0004] In the existing technology, pen caps are small in size, and their assembly is still carried out manually or semi-automatically, which is labor-intensive, slow in assembly speed, and low in production capacity. Utility Model Content

[0005] To address the aforementioned issues, this application provides a reasonably structured automatic pen cap assembly machine, thereby automating the assembly of pen cap tubes and pen cap clips into pen caps, which helps to increase assembly speed, improve production capacity, and effectively reduce manual labor intensity.

[0006] The technical solution adopted in this utility model is as follows: An automatic pen cap assembly machine includes a circumferentially arranged conveyor track. A loading tray station and a unloading tray station are arranged along one long side of the conveyor track, and a pen cap clamping and loading transfer mechanism and a pressing station are arranged along the other long side of the conveyor track. Loading and unloading components, a storage and flipping area, and a clamping and transferring mechanism are respectively arranged between the loading tray station and the conveyor track, and between the unloading tray station and the conveyor track. The clamping and transferring mechanism transfers pen cap tubes from the tray in the loading tray station to the storage and flipping area, or transfers assembled parts from the storage and flipping area to the tray in the unloading tray station.

[0007] As a further improvement to the above technical solution: The conveying track suspends and conveys multiple accompanying clamping carriers. Each accompanying clamping carrier includes a support block for fitting the pen cap tube. A clamping block is elastically installed on the support block located inside the pen cap tube. Under the elastic force of the elastic element, the clamping block is pressed against the inner wall of the pen cap tube to form a non-powered clamping and positioning. A clamping release mechanism is provided below the accompanying clamping carrier located at the pen cap tube loading and assembly unloading points. The clamping release mechanism releases the non-powered clamping of the accompanying clamping carrier.

[0008] Two pen cap tubes are independently clamped side by side on a single accompanying clamping carrier, and two or more even numbers of pen cap tubes or assemblies are stored in the storage flipping area.

[0009] The pen cap tube or assembly is placed horizontally in the corresponding material tray, and the pen cap tube and assembly on the conveying track are in a vertical state. The conveying track and the storage and flipping area are connected by loading and unloading components. The storage and flipping area includes a flipping seat, which is provided with an upward-facing receiving groove. The flipping seat flips so that the opening of the receiving groove faces upward or outward.

[0010] The accompanying clamping carrier has the following structure: a carrier seat that moves along a conveying track; the carrier seat has an upward-opening cavity; a support block is installed inside the cavity; a support rod is installed from bottom to top through the carrier seat toward the support block; a clamping block is installed through the support block and the support rod; a clamping surface extends from one side of the clamping block outside the support block; the clamping block inside the support block has an oblique hole; a vertical hole is opened on the support block; a pin is provided on the upper part of the support rod; the pin is fitted into the oblique hole and the vertical hole; an elastic element is installed between the support rod and the support block; the end of the support rod that extends downward through the carrier seat is directly opposite the upper force-applying element of the clamping release mechanism.

[0011] The upper force-applying component is a top rod that moves independently up and down corresponding to the bottom end of each support rod, or the upper force-applying component is a top plate located below the support rod that moves up and down.

[0012] The loading and unloading tray stations have identical structures and are supported opposite each other on the material platform, each including a tray transfer and stacking mechanism. The tray transfer and stacking mechanism consists of a support, a lifting frame slidably mounted on the support, the lifting frame being sleeved around the circumference of the support, material platforms located on the front and rear sides of the support for stacking full and empty trays respectively, and lifting frames located on the front and rear sides of the support surrounding the corresponding trays. A material-supporting cylinder with its output end facing inward is correspondingly mounted on the lifting frame located on the opposite side of the tray. A translation seat is installed on the top surface of the support, the translation seat rests on the bottom surface of the tray, and the translation seat moves back and forth above the trays on both sides of the support, with the translation seat and the lifting frame switching the load on the uppermost tray.

[0013] The pen cap clamp loading and transfer mechanism includes a vibratory feeder, and a linear feeder is connected to the output end of the vibratory feeder. The linear feeder is arranged parallel to the long side of the conveying track.

[0014] The structure of the pen cap clip loading and transfer mechanism is as follows: it includes a support base, which moves horizontally by two mutually perpendicular translational forces, namely, translational force one and translational force two. One or more clamping forces are installed on the support base, which clamp the pen cap clips from the linear feeder. The support base is equipped with a sensor to detect the orientation of the pen cap clips. It also includes a clamping force that transfers between the support base and the conveyor track. The clamping force is installed on a self-rotating force and a co-rotating force, and the self-rotating force adjusts the orientation of a single pen cap clip according to the sensor feedback.

[0015] The long side of the conveyor track behind the pressing station is also equipped with an engraving station, an inspection station, and a material rejection station.

[0016] Compared with the prior art, the present invention has the following beneficial effects: This utility model uses the conveyor track as the layout center, and arranges the loading and unloading tray stations, which occupy a large space, side by side on the same side of the conveyor track, while the remaining stations are arranged on the other side of the conveyor track, forming a compact and space-saving automatic pen cap assembly machine. It realizes the fully automated operation of assembling pen cap tubes and pen cap clips into pen caps from the loading process, which helps to improve assembly speed, increase production capacity, and effectively reduce labor intensity. This utility model also has the following advantages: The accompanying clamping carrier, which adopts non-powered clamping and positioning, flows through each workstation along the conveyor track, helping to reduce clamping and transfer time outside of operation. While realizing and ensuring smooth operation at each workstation, it effectively ensures the consistency and reliability of pen cap tube clamping on the accompanying clamping carrier during operation at each workstation, and also effectively reduces the investment in power mechanism. By using the storage and flipping area, combined with the loading and unloading components and the clamping and transferring mechanism, the storage and flipping area is set as a temporary storage and switching area connecting the material tray and the conveying track. While switching the posture of the pen cap tube, it can also coordinate and match the inconsistency between the quantity of material stored in the material tray and the quantity conveyed by the conveying track, effectively ensuring the assembly cycle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the present invention (the loading tray station and the unloading tray station are omitted).

[0019] Figure 3 This is a schematic diagram of the layout of the conveyor track of this utility model.

[0020] Figure 4 This is a schematic diagram of the structure of the accompanying clamping carrier of this utility model.

[0021] Figure 5 This is a schematic diagram showing the layout of the loading tray station and the unloading tray station of this utility model.

[0022] Figure 6 This is a schematic diagram of the material tray transfer and stacking mechanism of this utility model.

[0023] Figure 7 This is a schematic diagram of the assembly of the translation seat in the material tray transfer and stacking mechanism of this utility model.

[0024] Figure 8 This is a schematic diagram of the pen cap clip loading and transfer mechanism of this utility model.

[0025] The components include: 1. Material platform; 2. Tray transfer and stacking mechanism; 3. Working platform; 4. Storage and flipping area; 5. Conveying track; 6. Pen cap clamp loading and transfer mechanism; 7. Clamping and transferring mechanism; 8. Clamping and releasing mechanism; 9. Accompanying clamping carrier; 10. Tray; 20. Pen cap tube; 30. Pen cap clamp; 40. Pressing station; 50. Engraving station; 60. Inspection station; 70. Rejection station. 21. Support; 22. Material support cylinder; 23. Lifting frame; 24. Translation guide rail; 25. Swing component; 26. Translation seat; 27. Longitudinal guide rail; 261. Positioning pin; 41. Tilting seat; 42. Loading and unloading assembly; 61. Linear feeder; 62. Translational force one; 63. Translational force two; 64. Clamping force one; 65. Clamping force two; 66. Rotational force; 67. Co-rotational force; 68. Clamping force three; 69. Transfer table; 621. Bearing base; 81. Top-loading force-applying component; 91. Carrier base; 92. Elastic element; 93. Support rod; 94. Pin; 95. Clamping block; 96. Support block; 97. End block; 911. Cavity; 951. Inclined hole; 961. Through groove; 962. Vertical hole. Detailed Implementation

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] like Figure 1 and Figure 2 As shown, an automatic pen cap assembly machine of this embodiment includes a circumferentially arranged conveyor track 5. A loading tray station and a unloading tray station are arranged along one long side of the conveyor track 5. A pen cap clamping loading and transferring mechanism 6 and a pressing station 40 are arranged along the other long side of the conveyor track 5. Loading and unloading components 42, storage and flipping areas 4, and clamping and transferring mechanisms 7 are respectively arranged between the loading tray station and the conveyor track 5 and between the unloading tray station and the conveyor track 5. The clamping and transferring mechanism 7 transfers the pen cap tubes 20 in the tray 10 in the loading tray station to the storage and flipping area 4, or the clamping and transferring mechanism 7 transfers the assembled parts in the storage and flipping area 4 to the tray 10 in the unloading tray station.

[0028] In this embodiment, the conveyor track 5 is used as the layout center. The loading tray station and unloading tray station, which occupy a large space, are arranged side by side on the same side of the conveyor track 5, and the remaining stations are arranged on the other side of the conveyor track 5. This forms a compact pen cap automatic assembly machine with a small footprint, realizing a fully automated operation from loading the pen cap tube 20 and pen cap clip 30 to assemble the pen cap.

[0029] In actual operation, the conveyor track 5, along with the storage and flipping area 4, loading and unloading components 42, pen cap clamp loading and transfer mechanism 6, and pressing station 40 arranged along its conveying direction, are all arranged on the work platform 3 to match the overall compactness of the parts and the small and delicate nature of the pen caps to be assembled. Meanwhile, the components and stations directly related to loading and unloading, such as the loading tray station and unloading tray station for loading and unloading in the form of trays 10, are arranged on the ground to facilitate batch operations of stacking trays 10 manually.

[0030] like Figure 3 and Figure 4 As shown, multiple accompanying clamping carriers 9 are suspended and transported along the side of the conveying track 5. Each accompanying clamping carrier 9 includes a support block 96 for fitting the pen cap tube 20. A clamping block 95 is elastically installed on the support block 96 located inside the pen cap tube 20. Under the elastic force of the elastic member 92, the clamping block 95 is pressed against the inner wall of the pen cap tube 20 to form a non-powered clamping and positioning. A clamping release mechanism 8 is provided below the accompanying clamping carrier 9 located at the pen cap tube 20 loading and assembly unloading point. The clamping release mechanism 8 releases the non-powered clamping of the accompanying clamping carrier 9.

[0031] In this embodiment, a non-powered clamping and positioning accompanying clamping carrier 9 is used. As the conveying track 5 flows through each workstation, it helps to reduce clamping and transfer time outside of operation. While realizing and ensuring smooth operation at each workstation, it effectively ensures the consistency and reliability of the pen cap tube 20 clamped on the accompanying clamping carrier 9 during operation at each workstation, and also effectively reduces the investment in the power mechanism.

[0032] In this embodiment, the conveying track 5 can adopt a commercially available magnetic levitation transmission line. Through a non-contact transmission method, it effectively eliminates problems such as physical wear of traditional mechanical chains, ensuring conveying accuracy and speed. It is suitable for the assembly and conveying of small metal pen cap tubes 20 and pen cap clips 30.

[0033] Two pen cap tubes 20 are clamped side by side on a single accompanying clamping carrier 9. The synchronous conveying and pressing operation of the two pen cap tubes 20 helps to improve efficiency. Two or more even numbers of pen cap tubes 20 or assemblies are stored in the storage and flipping area 4, so that the storage and flipping area 4 serves as a matching and switching area between the conveying track 5 and the material tray 10, and plays a role in connection and switching.

[0034] In this embodiment, six pen cap tubes 20 or assemblies are arranged on the storage and flipping area 4; the clamping and transferring mechanism 7 simultaneously clamps the six pen cap tubes 20 or assemblies and transfers them between the storage and flipping area 4 and the material tray 10.

[0035] The pen cap tube 20 or the assembly is placed horizontally in the corresponding material tray 10. The pen cap tube 20 and the assembly on the conveying track 5 are in a vertical state. The conveying track 5 and the storage and flipping area 4 are connected by a loading and unloading assembly 42. The storage and flipping area 4 includes a flipping seat 41. The flipping seat 41 is provided with an upward-facing receiving groove. The flipping seat 41 flips so that the opening of the receiving groove faces upward or outward.

[0036] In this embodiment, by setting up the storage and flipping area 4, combined with the loading and unloading components 42 and the clamping and transferring mechanism 7, the storage and flipping area 4 is set as a temporary storage and switching area connecting the material tray 10 and the conveying track 5. While switching the posture of the pen cap tube 20, it can also coordinate and match the inconsistency between the quantity of material stored in the material tray 10 and the quantity conveyed by the conveying track 5, effectively ensuring the assembly cycle.

[0037] exist Figure 4 In the embodiment shown, the accompanying clamping carrier 9 has the following structure: it includes a carrier seat 91 that moves along the conveying track 5. The carrier seat 91 has an upward-facing cavity 911. A support block 96 is installed inside the cavity 911. A support rod 93 is installed from bottom to top through the carrier seat 91 toward the support block 96. A clamping block 95 is installed through the support block 96 and the support rod 93. A clamping surface extends from one side of the clamping block 95 located outside the support block 96 and is in contact with the inner wall of the pen cap tube 20. The clamping block 95 located inside the support block 96 has an oblique hole 951. A vertical hole 962 is opened on the support block 96. A pin 94 is provided on the upper part of the support rod 93. The pin 94 is fitted into the oblique hole 951 and the vertical hole 962. An elastic member 92 is installed between the support rod 93 and the support block 96. The end of the support rod 93 that extends downward through the carrier seat 91 is directly opposite the upper force-applying member 81 of the clamping release mechanism 8.

[0038] In this embodiment, the support rod 93 and the support block 96 can be respectively provided with planes for limiting the elastic element 92. When there is no external force, the support rod 93 is located at the lower limit position relative to the support block 96 under the action of the elastic element 92. At this time, the clamping surface of the clamping block 95 moves outward relative to the support block 96 and is pressed against the inner wall surface of the pen cap tube 20 to form a clamp. When the upper force-applying element 81 moves upward and applies force to the support rod 93, it will overcome the elastic force of the elastic element 92. The support rod 93 moves upward relative to the support block 96 until the upper limit position. The pin 94 on the support rod 93 forms a guide for the upward movement of the support rod 93 relative to the support block 96. At the same time, the pin 94 moves upward along the vertical hole 962 on the support block 96 and acts on the inclined hole 951 of the clamping block 95, driving the clamping block 95 to move inward relative to the support block 96 so that the clamping surface is separated from the inner wall surface of the pen cap tube 20 and the clamping is released.

[0039] In this embodiment, the clamping surface can be set as an outwardly convex arc surface structure that matches the shape of the inner wall surface of the pen cap tube 20; the support block 96 is provided with a through groove 961 for the clamping block 95 to be fitted and moved relative to it, and the upper part of the support rod 93 is provided with a vertical groove that is directly opposite to the through groove 961 and facilitates the fitting and movement of the clamping block 95.

[0040] In this embodiment, for ease of assembly and processing, the carrier base 91 and the end block 97 together form an upward-facing cavity 911.

[0041] The upper force-applying component 81 is a push rod that moves independently up and down corresponding to the bottom end of each support rod 93, or the upper force-applying component 81 is a top plate located below the support rod 93 that moves up and down.

[0042] In this embodiment, the top force-applying component 81 can be selected as a top rod or a top plate, depending on the actual needs of the workstation. For example, at the loading tray workstation, a top plate structure can be used to operate more than one position of the accompanying clamping carrier 9 at the same time; while at the unloading tray workstation, a top rod structure can be used to operate each position of the accompanying clamping carrier 9 individually.

[0043] like Figure 5 As shown, the loading tray station and the unloading tray station have the same structure and are supported on the material platform 1 in opposite directions. Each station includes a tray transfer and stacking mechanism 2. The overall layout is compact and reasonable, and it is convenient for manual operation of the stacked trays 10.

[0044] exist Figure 6 In the illustrated embodiment, the structure of the material tray transfer and stacking mechanism 2 is as follows: it includes a support 21, a lifting frame 23 slidably mounted on the support 21, the lifting frame 23 being sleeved around the circumference of the support 21, and material platforms 1 located on the front and rear sides of the support 21 respectively for stacking full and empty material trays 10. The lifting frame 23 located on the front and rear sides of the support 21 surrounds the corresponding material trays 10 around their circumference. As the lifting frame 23 moves up and down, it drives the full and empty material trays 10 supported on both sides to move. The empty material tray 10 moves synchronously; a material-supporting cylinder 22 with its output end facing inward is correspondingly installed on the lifting frame 23 located on the opposite side of the material tray 10, and the material tray 10 is supported and lifted by the extension of the output end of the material-supporting cylinder 22; a translation seat 26 is installed on the top surface of the support 21, and the translation seat 26 rests on the bottom surface of the material tray 10. The translation seat 26 moves back and forth above the material trays 10 on both sides of the support 21, and the translation seat 26 and the lifting frame 23 switch to support the uppermost material tray 10.

[0045] In the above material tray station, taking the left tray 10 filled with pen cap tubes 20 and the right tray 10 empty as an example; the lifting frame 23 descends relative to the support 21 and is located below the uppermost material tray 10 on the left. The supporting cylinder 22 extends through the output section to support the uppermost material tray 10. The lifting frame 23 moves to lift the material tray 10 upwards until it is higher than the translation seat 26. The translation seat 26 moves to below the corresponding material tray 10, and the lifting frame 23 descends until the material tray 10 is supported. Supported by the translation seat 26, the material-supporting cylinder 22 retracts, and the translation seat 26 drives the material tray 10 to move to the right. Combined with the operation of the clamping and transferring mechanism 7, the pen cap tube 20 in the material tray 10 is transferred to the corresponding storage and flipping area 4. When the material tray 10 is empty, the lifting frame 23 moves up and lifts the empty material tray 10 on the right. The translation seat 26 moves to the left to receive the next full material tray 10. When the lifting frame 23 moves down, the empty material tray 10 on the right is stacked downwards.

[0046] exist Figure 6 and Figure 7 In the embodiment shown, a swing member 25 driven by rotational power is rotatably mounted on the top surface of the support 21. The end of the swing member 25 is rotatably fitted to a sliding block. The sliding block is slidably fitted on the longitudinal guide rail 27 on the bottom surface of the translation seat 26. The translation seat 26 is slidably fitted to the support 21 via the translation guide rail 24 and moves between the two material trays 10. The longitudinal guide rail 27 and the translation guide rail 24 are arranged perpendicularly. As the swing member 25 swings, the sliding block moves along the longitudinal guide rail 27 and pulls the translation seat 26 to move along the translation guide rail 24.

[0047] In this embodiment, the translation seat 26 can position the tray 10 via the positioning pin 261.

[0048] The pen cap clamp feeding and transfer mechanism 6 includes a vibratory feeder, and the output end of the vibratory feeder is connected to a linear feeder 61. The linear feeder 61 is arranged parallel to the long side of the conveying track 5, which makes the overall layout compact and the vibratory feeder is arranged on the outside for easy manual operation.

[0049] like Figure 8As shown, the structure of the pen cap clip loading and transfer mechanism 6 is as follows: it includes a support base 621, which is driven to move in the horizontal plane by translational forces 62 and 63, which are perpendicular to each other. One or more clamping forces 64 are installed on the support base 621. The clamping forces 64, combined with the actions of translational forces 62 and 63, clamp the pen cap clips 30 from the linear feeder 61. A sensor is provided on the support base 621 to detect the orientation of the pen cap clips 30, such as the identification of whether the clamping part of the pen cap clips 30 is facing inward or outward as shown in the figure. It also includes clamping forces that transfer between the support base 621 and the conveying track 5. The clamping forces are installed on a self-rotating force 66 and a co-rotating force 67. The self-rotating force 66 adjusts the orientation of a single pen cap clip 30 according to the sensor feedback.

[0050] In this embodiment, the clamping power consists of two sets of clamping power units 65 arranged in parallel. The two sets of clamping power units 65 are respectively installed on the output part of the self-rotation power unit 66, and the self-rotation power unit 66 is installed on the co-rotation power unit 67. The two pen cap clips 30 located on the support seat 621 are arranged in a direction perpendicular to the long side of the conveying track 5. The discharge order of the pen cap clips 30 on the accompanying clamping carrier 9 at the long side of the conveying track 5 needs to be along the conveying direction. Therefore, when the self-rotation power unit 66 adjusts the two pen cap clips 30 to have the same forward and reverse posture, the co-rotation power unit 67 is also needed to switch the arrangement order of the two pen cap clips 30 from vertical to along the conveying direction.

[0051] In this embodiment, the pen cap clip loading and transfer mechanism 6 also includes a transfer platform 69 and two sets of clamping power units 68 arranged in parallel. The clamping power units 68 and the clamping power units 65 are installed together in the same linear module and the same lifting module output section. When the clamping power units 65 move from the carrier 621 to the transfer platform 69, the clamping power units 68 move from the transfer platform 69 to the conveying track 5, thereby effectively improving the loading and transfer efficiency of the pen cap clip 30. The clamping power units 68 transfer the pen cap clip 30 to the pen cap tube 20 in the accompanying clamping carrier 9 of the conveying track 5.

[0052] The long side of the conveyor track 5 located behind the pressing station 40 is also equipped with an engraving station 50, an inspection station 60, and a material rejection station 70.

[0053] In this embodiment, the pen cap tube 20 is fed into the conveyor track 5 and the accompanying clamping carrier 9 by the loading tray station in conjunction with the clamping and transferring mechanism 7, the storage and flipping area 4, and the loading and unloading assembly 42. The pen cap clamp 30 is fed into the accompanying clamping carrier 9 by the pen cap clamp loading and transferring mechanism 6. Then, the pressing station 40 applies force from top to bottom to press the pen cap clamp 30 and the pen cap tube 20 to achieve assembly. After that, the engraving station 50, such as laser marking, can engrave logos, etc., and the inspection station 60, such as the camera assembly, can inspect the engraving effect. The rejecting station 70 rejects unqualified products. Finally, at the unloading tray station, the assembled parts are unloaded and trayed in conjunction with the loading and unloading assembly 42, the storage and flipping area 4, and the clamping and transferring mechanism 7.

[0054] This invention constitutes a compact and space-saving automatic pen cap assembly machine, realizing fully automated operation from feeding the pen cap tube and pen cap clip to assemble the pen cap, which helps to improve assembly speed, increase production capacity, and effectively reduce manual labor intensity.

[0055] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0056] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. An automatic pen cap assembly machine, comprising a circumferentially arranged conveyor track (5), characterized in that: A loading tray station and a unloading tray station are arranged along one long side of the conveying track (5), and a pen cap clamp loading and transfer mechanism (6) and a pressing station (40) are arranged along the other long side of the conveying track (5). Loading and unloading components (42), storage and flipping areas (4), and clamping and transferring mechanisms (7) are respectively arranged between the loading tray station and the conveying track (5) and between the unloading tray station and the conveying track (5). The clamping and transferring mechanism (7) transfers the pen cap tube (20) in the tray (10) of the loading tray station to the storage and flipping area (4), or the clamping and transferring mechanism (7) transfers the assembly in the storage and flipping area (4) to the tray (10) of the unloading tray station.

2. The automatic pen cap assembly machine as described in claim 1, characterized in that: The conveying track (5) is suspended on the side to convey multiple accompanying clamping carriers (9). Each accompanying clamping carrier (9) includes a support block (96) for fitting the pen cap tube (20). A clamping block (95) is elastically installed on the support block (96) located inside the pen cap tube (20). Under the elastic force of the elastic element (92), the clamping block (95) is pressed against the inner wall of the pen cap tube (20) to form a non-powered clamping and positioning. A clamping release mechanism (8) is provided below the accompanying clamping carrier (9) located at the feeding point of the pen cap tube (20) and the unloading point of the assembly. The clamping release mechanism (8) releases the non-powered clamping of the accompanying clamping carrier (9).

3. The automatic pen cap assembly machine as described in claim 2, characterized in that: Two pen cap tubes (20) are independently clamped side by side on a single accompanying clamping carrier (9), and two or more even numbers of pen cap tubes (20) or assemblies are stored on the storage flipping area (4).

4. An automatic pen cap assembly machine as described in claim 1 or 3, characterized in that: The pen cap tube (20) or assembly is placed horizontally in the corresponding tray (10), and the pen cap tube (20) and assembly on the conveying track (5) are in a vertical state. The conveying track (5) and the storage and flipping area (4) are connected by a loading and unloading assembly (42). The storage and flipping area (4) includes a flipping seat (41), which is provided with an upward-facing receiving groove. The flipping seat (41) flips so that the opening of the receiving groove faces upward or outward.

5. The automatic pen cap assembly machine as described in claim 2, characterized in that: The accompanying clamping carrier (9) has the following structure: it includes a carrier seat (91) that moves along the conveying track (5), the carrier seat (91) is provided with an upward-facing cavity (911), a support block (96) is installed inside the cavity (911), a support rod (93) is installed from bottom to top through the carrier seat (91) toward the support block (96), a clamping block (95) is installed through the support block (96) and the support rod (93), and a clamping surface extends from one side of the clamping block (95) located outside the support block (96). The clamping block (95) located inside the support block (96) has an oblique hole (951), and the support block (96) has a vertical hole (962). The upper part of the support rod (93) is provided with a pin (94), which is fitted into the oblique hole (951) and the vertical hole (962). An elastic element (92) is installed between the support rod (93) and the support block (96). The end of the support rod (93) that extends downward through the carrier seat (91) is directly opposite the upper force-applying element (81) of the clamping release mechanism (8).

6. The automatic pen cap assembly machine as described in claim 5, characterized in that: The upper force-applying component (81) is a top rod that moves independently up and down corresponding to the bottom end of each support rod (93), or the upper force-applying component (81) is a top plate located below the support rod (93) that moves up and down.

7. The automatic pen cap assembly machine as described in claim 1, characterized in that: The loading and unloading tray stations have the same structure and are supported opposite each other on the material platform (1). Each includes a tray transfer and stacking mechanism (2). The structure of the tray transfer and stacking mechanism (2) is as follows: it includes a support (21), a lifting frame (23) is slidably installed on the support (21), the lifting frame (23) is sleeved on the outside of the support (21), and the material platforms (1) located on the front and rear sides of the support (21) are used to stack full and empty trays (10) respectively. The lifting frame (23) on the rear side surrounds the corresponding material tray (10) around its perimeter; the lifting frame (23) on the opposite side of the material tray (10) is equipped with a material-supporting cylinder (22) with its output end facing inward; a translation seat (26) is installed on the top surface of the support (21), the translation seat (26) rests on the bottom surface of the material tray (10), and the translation seat (26) moves back and forth above the material trays (10) on both sides of the support (21), and the translation seat (26) and the lifting frame (23) switch the load on the uppermost material tray (10).

8. The automatic pen cap assembly machine as described in claim 1, characterized in that: The pen cap clamp loading and transfer mechanism (6) includes a vibratory feeder, and the output end of the vibratory feeder is connected to a linear feeder (61). The linear feeder (61) is arranged parallel to the long side of the conveying track (5).

9. The automatic pen cap assembly machine as described in claim 8, characterized in that: The structure of the pen cap clip loading and transfer mechanism (6) is as follows: it includes a support seat (621), which is driven by a translational force one (62) and a translational force two (63) that are perpendicular to each other to move in the horizontal plane. One or more clamping forces one (64) are installed on the support seat (621), and the clamping forces one (64) clamp the pen cap clip (30) from the linear feeder (61). The support seat (621) is equipped with a sensor, which detects the front and back of the pen cap clip (30). It also includes a clamping force that is transferred between the support seat (621) and the conveying track (5). The clamping force is installed on the self-rotation force (66) and the co-rotation force (67), and the self-rotation force (66) adjusts the front and back of a single pen cap clip (30) according to the sensor feedback.

10. An automatic pen cap assembly machine as described in claim 1, characterized in that: The conveyor track (5) located behind the pressing station (40) is also equipped with an engraving station (50), an inspection station (60), and a material removal station (70) on its long side.

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