An automatic assembly equipment for roll end caps

CN224630167UActive Publication Date: 2026-08-14XIONG XIAN FENG HUA SU JIAO ZHI PIN YOU XIAN GONG SI +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-11
Publication Date
2026-08-14

AI Technical Summary

Technical Problem

[0003]为克服上述缺陷,本实用新型提供了一种卷材端盖自动组装设备,解决了现有技术中的扣合组装设备经常出现卡料、输送不及时地影响了整体组装效率

Benefits of technology

[0022]本实用新型中,在工作时,首先将端帽放置在输送装置上,输送装置启动,通过皮带的传动将端帽输送至指定位置。机械臂根据预设程序移动至输送装置上方,机械夹爪张开并下降,夹住端帽后上升并移动至待组装位置。与此同时,端板预先放置在料筒内,推送件启动,将载料板从料筒底部推出,此时料筒下方的滑道会托住此刻位于料筒最下方的一块端板。在载料板将端板推出料筒后,机械臂将夹取的端帽移动至端板上方,对准后下降,使端帽与端板扣合组装。组装完成后,推送件将载料板收回料筒内。实现了端板和端帽的自动组装,相比传统人工操作,大大提高了组装效率。通过机械自动化操作,保证了组装质量的稳定性,避免了人工组装扣合不紧密导致端盖松动、脱落的问题,有效保护卷材在运输和存储过程中不受损坏。同时,减少了人工劳动强度和人力成本。

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Abstract

This utility model relates to the field of roll material production and packaging technology. It provides an automatic assembly device for roll material end caps, used to fasten end plates and end caps together to form end caps. The device includes a conveying device for conveying end caps; a robotic arm located on one side of the conveying device; a material cylinder located on one side of the conveying device for holding end plates; a carrier plate slidably disposed below the material cylinder for accommodating the lowest end plate; and a pusher located on one side of the bottom of the material cylinder, having a movable end connected to the carrier plate. The pusher pushes the carrier plate out of the material cylinder and supports the end plate, enabling the end cap to be fastened and assembled with the end plate. This technical solution solves the problem of material jamming and untimely conveying frequently occurring in existing fastening assembly equipment, which affects overall assembly efficiency. Furthermore, some equipment lacks an effective automatic feeding mechanism in the end plate feeding stage.
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Description

Technical Field

[0001] This utility model relates to the field of roll material production and packaging technology, specifically to an automatic roll material end cap assembly device. Background Technology

[0002] In the field of coil manufacturing and packaging, the assembly of coil end caps is a crucial process. Traditional coil end cap assembly often relies heavily on manual labor, requiring workers to manually fasten the end plates and caps. This manual operation is extremely inefficient. Furthermore, manual assembly suffers from poor quality consistency; some end caps are not tightly fastened, leading to loosening or detachment during subsequent transportation and storage, resulting in coil damage. To address these issues, automated end cap assembly equipment has emerged. However, these machines frequently experience problems such as material jamming and delayed delivery, impacting overall assembly efficiency. In the end plate feeding stage, some equipment lacks effective automated feeding mechanisms, still requiring manual assistance. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides an automatic assembly equipment for roll end caps, which solves the problem that existing snap-fit ​​assembly equipment often experiences material jamming and untimely feeding, affecting the overall assembly efficiency. In the end plate feeding stage, some equipment lacks an effective automatic feeding mechanism.

[0004] According to one aspect, at least one embodiment of the present invention provides an automatic assembly device for roll end caps, used to fasten end plates and end caps to form end caps, comprising:

[0005] A conveying device for conveying the end caps;

[0006] A robotic arm is located on one side of the conveying device. The robotic arm has mechanical grippers for gripping the end cap.

[0007] A material cylinder is disposed on one side of the conveying device, and the material cylinder is used to hold the end plate;

[0008] A material carrier plate is slidably disposed below the material cylinder, and the material carrier plate is used to accommodate an end plate located at the bottom of the material cylinder;

[0009] A pusher is disposed on one side of the bottom of the material cylinder. The pusher has a movable end. The material carrier plate is connected to the movable end. The pusher is used to push the material carrier plate out of the material cylinder and support the end plate so that the end cap can be fastened and assembled with the end plate.

[0010] Optionally, the end plates are arranged along the axial direction of the material cylinder, and the end plates are coaxially arranged with the material cylinder.

[0011] Optionally, the pusher includes:

[0012] A support frame is provided on one side of the conveying device, the material cylinder is provided on the support frame, a slide rail is horizontally provided on the support frame, and the material carrier plate is slidably provided on the slide rail;

[0013] A lead screw motor is mounted on the bracket, and a nut is provided at the bottom of the material carrier plate. The lead screw motor is threadedly connected to the nut.

[0014] Optionally, the carrier plate has a groove with the same diameter as the end plate. The groove is used to accommodate the end plate. An inlet groove is provided on one side of the carrier plate, and the inlet groove communicates with the groove.

[0015] Optionally, the inner wall of the material carrier plate is circumferentially hinged with pressure blocks at equal intervals. The pressure blocks are used to press the end plate located in the groove. A torsion spring is provided between the pressure block and the inner wall of the material carrier plate. The torsion spring is used to press the pressure block against the bottom surface of the groove.

[0016] Optionally, the edges of the pressure blocks are all rounded.

[0017] Optionally, the edges of the inlet groove away from the groove are all arc-shaped structures.

[0018] Optionally, the end plate has a first through hole in the middle for insertion with the end cap, and the carrier plate has a second through hole in the middle. The diameter of the second through hole is larger than the diameter of the first through hole. The second through hole is used to provide movement space for the snapping of the end plate and the end cap.

[0019] Optionally, the end cap sidewall has a protrusion, which is used to limit the second through hole after the end cap is inserted into the end plate.

[0020] Optionally, the sidewall of the barrel has a vertical groove opened along the axial direction, the vertical groove being used to observe the number of end plates inside the barrel.

[0021] The beneficial effects of the embodiments of this utility model are as follows:

[0022] In this invention, during operation, the end cap is first placed on the conveyor device, which then starts and transports the end cap to the designated position via belt drive. The robotic arm moves above the conveyor device according to a preset program, the mechanical grippers open and descend, clamp the end cap, and then rise and move to the assembly position. Simultaneously, the end plate is pre-placed in the material cylinder, and the pusher is activated, pushing the carrier plate out from the bottom of the cylinder. At this time, the slide below the cylinder supports the end plate currently at the bottom of the cylinder. After the carrier plate pushes the end plate out of the cylinder, the robotic arm moves the clamped end cap above the end plate, aligns it, and then descends to assemble the end cap and end plate together. After assembly, the pusher retracts the carrier plate into the cylinder. This achieves automatic assembly of the end plate and end cap, significantly improving assembly efficiency compared to traditional manual operation. Through automated mechanical operation, the stability of assembly quality is ensured, avoiding the problems of loose or detached end caps caused by incomplete manual assembly, effectively protecting the roll material from damage during transportation and storage. At the same time, it reduces manual labor intensity and labor costs. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0024] Figure 1 This is a schematic diagram of the overall structure of the fastening device in one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A schematic diagram of the material cylinder in the embodiment;

[0026] Figure 3 for Figure 2 A schematic diagram of the carrier plate in the embodiment;

[0027] Figure 4 for Figure 1 A schematic diagram of the slide structure in the embodiment;

[0028] Figure 5 for Figure 4 A magnified view of a portion at point A in the embodiment;

[0029] Figure 6 for Figure 1 A schematic diagram of the structure at the bottom of the slide in the embodiment;

[0030] Figure 7 for Figure 1 A front view of the slide in the embodiment;

[0031] Figure 8 for Figure 7 A magnified view of a portion of point B in the embodiment;

[0032] Figure 9 for Figure 1 A schematic diagram of the assembly of the end plate and end cap in the embodiment;

[0033] Figure 10 for Figure 1 The embodiment shows a schematic diagram of the end cap structure.

[0034] In the diagram: 100, end plate; 200, end cap; 1, conveying device; 2, robotic arm; 3, mechanical gripper; 4, material cylinder; 5, material carrier plate; 7, pusher; 6, bracket; 701, slide rail; 702, lead screw motor; 703, nut; 503, groove; 502, inlet groove; 8, pressure block; 9, torsion spring; 400, first through hole; 501, second through hole; 300, protrusion; 401, vertical groove. Detailed Implementation

[0035] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0036] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0037] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 limitations on this utility model.

[0040] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0041] like Figures 1-10 The diagram illustrates an automatic roll end cap assembly device according to an embodiment of the present invention, used to fasten end plates 100 and end caps 200 together to form end caps. It should be noted that the end cap is a circular cardboard or plastic disc, and the end cap 200 is cylindrical with a circular plate at one end. The end cap 200 is made of rubber and has a circular hole in the center. The automatic roll end cap assembly device consists of a conveying device 1, a robotic arm 2, a material cylinder 4, a material carrier plate 5, and a pushing component 7. The conveying device 1 adopts a belt conveyor structure with anti-slip textures on the belt surface to stably convey the end caps 200. The robotic arm 2 is a six-axis industrial robotic arm. The mechanical gripper 3 installed at the end of the robotic arm 2 consists of two openable grippers with anti-slip rubber pads on the inner side for firmly gripping the end caps 200. The material cylinder 4 is a cylindrical structure with a certain wall thickness to ensure structural strength. The material carrier plate 5 is a circular plate structure, and its size is slightly smaller than the inner diameter of the material cylinder 4, allowing it to slide smoothly below the material cylinder 4. The pusher 7 is installed on one side of the bottom of the material cylinder 4 and is used to drive the material carrier plate 5.

[0042] For example, such as Figure 1As shown, during operation, the end cap 200 is first placed on the conveyor device 1. The conveyor device 1 is activated, and the end cap 200 is transported to the designated position via belt drive. The robotic arm 2 moves above the conveyor device 1 according to a preset program. The mechanical gripper 3 opens and descends, clamps the end cap 200, and then rises and moves to the assembly position. At the same time, the end plate 100 is pre-placed in the material cylinder 4. The pusher 7 is activated, pushing the carrier plate 5 out from the bottom of the material cylinder 4. At this time, the slide 701 below the material cylinder 4 supports the end plate 100 located at the bottom of the material cylinder 4. After the carrier plate 5 pushes the end plate 100 out of the material cylinder 4, the robotic arm 2 moves the clamped end cap 200 above the end plate 100, aligns it, and then descends, so that the end cap 200 and the end plate 100 are fastened together. After assembly, the pusher 7 retracts the carrier plate 5 into the material cylinder 4.

[0043] This equipment enables the automatic assembly of end plates 100 and end caps 200, significantly improving assembly efficiency compared to traditional manual operation. Through automated mechanical operation, it ensures stable assembly quality, avoiding the problems of loose or detached end caps caused by incomplete manual assembly, effectively protecting the roll material from damage during transportation and storage. Simultaneously, it reduces manual labor intensity and labor costs.

[0044] In some examples, the end plates 100 are neatly arranged along the axial direction of the barrel 4 inside the barrel 4, and the central axis of the end plates 100 coincides with the central axis of the barrel 4. The inner diameter of the barrel 4 is slightly larger than the diameter of the end plates 100, providing suitable space for the placement and movement of the end plates 100.

[0045] For example, such as Figure 2 As shown, when placing the end plate 100 into the material cylinder 4, the operator vertically inserts the end plate 100 into the material cylinder 4 in sequence, arranging them axially. During the pushing out and retracting process of the carrying plate 5, since the end plate 100 is coaxially arranged with the material cylinder 4, it can be ensured that the end plate 100 is stably supported by the carrying plate 5, and during the subsequent fastening process of the end cap 200 and the end plate 100, it is convenient for the robotic arm 2 to be accurately aligned.

[0046] The end plate 100 is coaxially arranged with the material cylinder 4, making the arrangement of the end plate 100 within the material cylinder 4 more neat and orderly. This facilitates the material carrier plate 5 in accurately picking up the bottom end plate 100, improving the accuracy and stability of the feeding process. At the same time, it facilitates the precise assembly of the end plate 100 and the end cap 200 by the robotic arm 2, further improving assembly efficiency and quality.

[0047] In some examples, the pusher 7 consists of a bracket 6 and a lead screw motor 702. The bracket 6 is a frame structure, fixedly installed on one side of the conveying device 1, and is used to support the material cylinder 4 and the lead screw motor 702. A slide rail 701 is horizontally arranged on the bracket 6. The slide rail 701 consists of two parallel slide rails. Slider blocks that cooperate with the slide rail 701 are arranged on both sides of the bottom of the material plate 5, allowing the material plate 5 to slide on the slide rail 701. The lead screw motor 702 is installed at one end of the bracket 6, and its lead screw passes through the nut 703 at the bottom of the material plate 5, driving the material plate 5 through a threaded connection.

[0048] For example, such as Figure 3 As shown, when it is necessary to push the material carrier plate 5 out of the material cylinder 4, the lead screw motor 702 starts, the lead screw rotates, and through the threaded transmission with the nut 703, it drives the material carrier plate 5 to move along the slide 701 to the outside of the material cylinder 4 until the material carrier plate 5 completely supports the end plate 100 located at the bottom of the material cylinder 4. After the end cap 200 and the end plate 100 are engaged, the lead screw motor 702 rotates in the opposite direction to retract the material carrier plate 5 into the material cylinder 4, waiting for the next feeding operation.

[0049] The structure employing a lead screw motor 702 and a slide rail 701 controls the pushing and retracting of the material carrier plate 5, ensuring the smoothness and accuracy of its movement. Compared to other drive methods, lead screw transmission offers higher transmission accuracy and stability, effectively preventing problems such as jamming or offset of the material carrier plate 5 during movement, thereby improving the reliability of material feeding from the end plate 100 and the overall stability of the equipment operation.

[0050] In some examples, the carrier plate 5 has a groove 503, which is circular and has the same diameter as the end plate 100. This groove can tightly accommodate the end plate 100 and prevent it from wobbling on the carrier plate 5. An inlet groove 502 is provided on one side of the carrier plate 5. The inlet groove 502 is semi-circular, with a width slightly larger than the diameter of the end plate 100 and a length equal to the radius of the groove 503. The inlet groove 502 communicates with the groove 503, facilitating the entry of the end plate 100 from the material cylinder 4 into the groove 503.

[0051] For example, such as Figure 4 As shown, after the carrier plate 5 completes the sequential pushing of the end plates 100, it returns horizontally to the bottom of the cylinder 4. When the carrier plate 5 enters the cylinder 4, the end plate 100 at the bottom of the cylinder 4 slides into the groove 503 through the inlet slot 502. Then, the pusher 7 pushes the carrier plate 5 out of the cylinder 4, and the end plate 100 in the groove 503 is accurately transported to the assembly position, waiting for the end cap 200 to engage. During the process of the end plate 100 entering the groove 503, because the groove 503 and the end plate 100 are sized to match, the position of the end plate 100 on the carrier plate 5 is fixed, facilitating subsequent assembly operations.

[0052] The groove 503 and the inlet groove 502 enable the end plate 100 to be accurately placed on the carrier plate 5, effectively preventing the end plate 100 from shifting during transportation and assembly, and improving the accuracy of the end plate 100 loading and assembly.

[0053] In some examples, pressure blocks 8 are hinged at equal intervals around the inner wall of the carrier plate 5, and the pressure blocks 8 have an arc-shaped structure. A torsion spring 9 is provided between the pressure block 8 and the inner wall of the carrier plate 5, with one end of the torsion spring 9 fixed to the inner wall of the carrier plate 5 and the other end fixed to the pressure block 8. In its natural state, the torsion spring 9 is in a compressed state, pressing the pressure block 8 tightly against the bottom surface of the groove 503.

[0054] For example, such as Figure 4 As shown, when the end plate 100 enters the groove 503, the end plate 100 will push up the pressure block 8, causing the pressure block 8 to rotate around the hinge point, and the torsion spring 9 will be further compressed. When the end plate 100 is fully inside the groove 503, the elastic force of the torsion spring 9 will cause the pressure block 8 to press the end plate 100 tightly, preventing the end plate 100 from shaking or shifting during the movement of the material carrier plate 5. When the end cap 200 is engaged with the end plate 100, the pressure of the pressure block 8 can ensure the stability of the end plate 100. When the end cap 200 and the end plate 100 are engaged in place, the robotic arm will pull the end cap 200 upwards directly, at which point the end plate 100 can be forcibly pulled out of the groove 503.

[0055] The pressure block 8 and torsion spring 9 effectively press the end plate 100 within the groove 503, further enhancing the stability of the end plate 100 on the carrier plate 5. Even if subjected to vibration or external force interference during equipment operation, the end plate 100 will not easily move, thus ensuring the accuracy and reliability of the assembly of the end plate 100 and the end cap 200, and reducing assembly defects caused by displacement of the end plate 100.

[0056] In some examples, the edges of the pressure block 8 are rounded.

[0057] For example, such as Figure 5 As shown, during the process of clamping the end plate 100 with the pressure block 8, the rounded edge of the pressure block 8 ensures a smoother contact between its surface and the end plate 100, preventing sharp pressure or friction. When the end plate 100 is clamped or moved, the rounded edge of the pressure block 8 does not obstruct its easy removal, ensuring the integrity of the end plate 100 throughout the assembly process. This effectively protects the surface quality of the end plate 100, avoids damage caused by the sharp edge of the pressure block 8, and improves the product qualification rate. Simultaneously...

[0058] In some examples, the edge of the groove 502 away from the recess 503 is a rounded structure.

[0059] For example, such as Figure 6As shown, when the material carrier plate 5 moves within the material cylinder 4, the end plate 100, located at the bottom of the material cylinder 4, slides towards the inlet groove 502 under the influence of gravity and the movement of the material carrier plate 5. Because the edge of the inlet groove 502 is a rounded structure, the end plate 100 is not obstructed or rubbed by sharp edges when entering the groove 502, and can smoothly slide into the groove 503. This reduces collisions and wear between the end plate 100 and the material carrier plate 5, ensuring smooth material feeding of the end plate 100. The rounded structure of the edge of the inlet groove 502 optimizes the feeding process of the end plate 100, improves the smoothness of the end plate 100 entering the material carrier plate 5, avoids problems such as jamming or stuckness during the feeding process, and improves feeding efficiency. At the same time, it reduces wear between the end plate 100 and the material carrier plate 5, extending the service life of the equipment and the service cycle of the end plate 100.

[0060] In some examples, the end plate 100 has a first through hole 400 in the middle for insertion with the end cap 200. The carrier plate 5 has a second through hole 501 in the middle, the diameter of which is larger than that of the first through hole 400, providing sufficient room for the engagement of the end plate 100 and the end cap 200. The edge of the second through hole 501 is smooth to avoid damage to the end plate 100 and the end cap 200.

[0061] For example, such as Figure 8 As shown, when the end cap 200 is fastened to the end plate 100, the insertion portion of the end cap 200 passes through the first through hole 400 of the end plate 100. The second through hole 501 of the carrier plate 5 provides sufficient space for the insertion and fastening process of the end cap 200, allowing the end cap 200 to smoothly complete the fastening action with the end plate 100. During the fastening process, the end plate 100 and the end cap 200 are not obstructed by the carrier plate 5, ensuring smooth assembly.

[0062] The second through hole 501 provides space for the engagement of the end plate 100 and the end cap 200, avoiding interference from the carrier plate 5 in the assembly process, ensuring that the end cap 200 can be accurately engaged with the end plate 100, and improving the success rate and efficiency of assembly.

[0063] In some examples, the end cap 200 has a protrusion 300 on its sidewall, which is a bump structure. After the end cap 200 is inserted into the end plate 100, the protrusion 300 can engage with the edge of the second through hole 501, which serves as a limit and facilitates the forced pulling of the assembled rear end plate 100 out of the groove 503.

[0064] In some examples, the sidewall of the cylinder has a vertical groove 401 that is opened along the axial direction. The vertical groove 401 is a rectangular slot with a moderate width, which allows for a clear observation of the number of end plates 100 inside the cylinder 4. The edges of the vertical groove 401 are smooth and will not cause scratches to the operator.

[0065] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A roll end cap automatic assembly equipment for buckling an end plate (100) and an end cap (200) to form an end cap, characterized in that, include: Conveying device (1) for conveying the end cap (200); A robotic arm (2) is located on one side of the conveying device (1). The robotic arm (2) has a mechanical gripper (3) for gripping the end cap (200). A material cylinder (4) is disposed on one side of the conveying device (1), and the material cylinder (4) is used to place the end plate (100). The material carrier plate (5) is slidably disposed below the material cylinder (4), and the material carrier plate (5) is used to accommodate an end plate (100) located at the bottom of the material cylinder (4). A pusher (7) is disposed on one side of the bottom of the material cylinder (4). The pusher (7) has a movable end. The material carrier plate (5) is connected to the movable end. The pusher (7) is used to push the material carrier plate (5) out of the material cylinder (4) and support the end plate (100) so that the end cap (200) can be fastened and assembled with the end plate (100).

2. The automatic roll end cap assembly apparatus according to claim 1, wherein, The end plate (100) is arranged along the axial direction of the material cylinder (4), and the end plate (100) is coaxially arranged with the material cylinder (4).

3. The apparatus of claim 1, wherein, The pusher (7) includes: A support (6) is provided on one side of the conveying device (1), the material cylinder (4) is provided on the support (6), a slide rail (701) is horizontally provided on the support (6), and the material plate (5) is slidably provided on the slide rail (701); A lead screw motor (702) is installed on the bracket (6), and a nut (703) is installed at the bottom of the material plate (5). The lead screw motor (702) is threadedly connected to the nut (703).

4. The apparatus of claim 1, wherein, The material carrier plate (5) has a groove (503) with the same diameter as the end plate (100). The groove (503) is used to accommodate the end plate (100). An inlet groove (502) is provided on one side of the material carrier plate (5), and the inlet groove (502) is connected to the groove (503).

5. An apparatus for automatically assembling end caps on a roll of material as defined in claim 4, wherein, The inner wall of the material carrier plate (5) is hinged with pressure blocks (8) at equal intervals around the circumference. The pressure blocks (8) are used to press the end plate (100) located in the groove (503). A torsion spring (9) is provided between the pressure block (8) and the inner wall of the material carrier plate (5). The torsion spring (9) is used to press the pressure block (8) onto the bottom surface of the groove (503).

6. An apparatus for automatically assembling end caps on a roll of material as defined in claim 5, wherein, The edges of the pressure block (8) are all rounded.

7. The apparatus of claim 4, wherein, The edges of the inlet groove (502) away from the groove (503) are all arc-shaped.

8. The apparatus of claim 1, wherein, The end plate (100) has a first through hole (400) in the middle for insertion with the end cap (200), and the carrier plate (5) has a second through hole (501) in the middle. The diameter of the second through hole (501) is larger than the diameter of the first through hole (400). The second through hole (501) is used to provide a space for the engagement of the end plate (100) and the end cap (200).

9. An apparatus for automatically assembling a cap on an end of a roll of material as defined in claim 8, wherein, The end cap (200) has a protrusion (300) on its side wall. After the end cap (200) is inserted into the end plate (100), the protrusion (300) is used to limit the second through hole (501).

10. The apparatus of claim 1, wherein, The sidewall of the barrel (4) has a vertical groove (401) opened along the axial direction, which is used to observe the number of the end plates (100) inside the barrel (4).