A paper tube limiting device and a paper tube production equipment

Abstract

The application relates to the paper tube production field and discloses a paper tube limiting device and a paper tube production equipment. The paper tube limiting device comprises a mounting piece, a bearing piece and a limiting piece. The bearing piece is arranged at the end of the mounting piece and is used for bearing the paper tube. The limiting piece is arranged on the bearing piece and has a limiting cavity used for placing the paper tube. The limiting piece is used for abutting against the outer circumferential surface of the paper tube. Through cooperation of the mounting piece, the bearing piece and the limiting piece, the limiting cavity of the limiting piece is used for containing the paper tube. The limiting piece abuts against the outer circumferential surface of the paper tube, the free rotation and position deviation of the paper tube in the transfer process are effectively limited, the original orientation of the identification on the outer surface of the paper tube relative to the jig reference point is kept unchanged in the transfer process, and therefore, the strict coaxial alignment of the identification on the paper tube body and the identification on the bottom disc can be realized in the subsequent assembly process.

Description

Technical Field

[0001] This application relates to the field of paper tube production, and more particularly to a paper tube limiting device and paper tube production equipment. Background Technology

[0002] Paper tubes, as a common packaging container, are widely used in paper cups, food packaging, handicrafts, and blind box products. Their typical structure consists of a tubular body and a circular piece fixed to the bottom of a hollow cavity within the body, forming an open-top cylindrical container. In current production processes, assembled paper tubes are transported to subsequent processes (such as printing, labeling, or secondary packaging) via a transfer fixture. However, current transfer fixtures generally lack a structure to constrain the circumferential position of the paper tube, causing it to easily rotate freely during transport. This rotation alters the original orientation of pre-set markings (such as brand logos, product information, or alignment marks) on the outer surface of the paper tube relative to the fixture's reference point. Since subsequent assembly processes (such as adding a lid or decorative layer) require the markings on the paper tube body to be strictly coaxially aligned with the markings on the bottom circular piece to meet the visual consistency standards of the final product, uncontrollable offsets or rotations during transport directly disrupt this alignment relationship. When the paper tube arrives at the assembly station at a random angle, the spatial relative position of the tube body marking and the round marking has deviated from the design state, causing the finished product to fail to meet the marking coaxiality requirements, which seriously affects the product's appearance quality and brand recognition. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a paper tube limiting device and paper tube production equipment.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: This application provides: A paper tube limiting device, comprising: Installation components; A carrier is disposed at the end of the mounting component, and the carrier is used to support the paper tube; A limiting member is provided on the carrier member. The limiting member has a limiting cavity for placing the paper tube and for abutting against the outer peripheral surface of the paper tube.

[0005] Furthermore, the limiting member includes a boss disposed on the bearing member, the boss having the limiting cavity; The limiting cavity is interference-fitted with the paper tube; or, the boss is provided with an abutting component, which abuts against the outer circumferential surface of the paper tube.

[0006] Furthermore, the limiting member includes a plurality of limiting blocks disposed on the carrier member, the limiting blocks forming the limiting cavity, and the carrier member having a plurality of sets of adjusting holes arranged radially along the carrier member, the limiting blocks being connected to the carrier member through connecting members and cooperating with the adjusting holes; The limiting cavity is interference-fitted with the paper tube, and the end of the limiting block facing the limiting cavity has an inclined guide surface; or, the limiting block is provided with an abutting component, which abuts against the outer peripheral surface of the paper tube.

[0007] Furthermore, the abutment component includes a mounting hole, in which an abutment and a first elastic member are disposed. The abutment is partially located within the limiting cavity, one end of the first elastic member abuts against the abutment, and a closure is provided at the end of the mounting hole opposite to the abutment.

[0008] Furthermore, the mounting hole has a circular cross-section and has a first opening and a second opening. The mounting hole communicates with the limiting cavity through the first opening. The sealing member is used to close the second opening. The inner diameter of the first opening is D1. The abutting member is spherical and has a diameter of D2, satisfying that D2 > D1.

[0009] This application also provides a paper tube production apparatus, comprising: At least one paper tube limiting device as described in any one of the above statements; A turntable, wherein the mounting component is rotatably mounted on the turntable; A stop assembly, located on one side of the mounting member, is used to abut against the mounting member; A linear drive assembly is located on one side of the stop assembly, and the linear drive assembly is used to drive the stop assembly to move away from the mounting member.

[0010] Furthermore, the stop assembly includes a sliding assembly, on which a stop plate is slidably disposed. The stop plate has a stop groove at its end facing the mounting member. A first transmission plate is also disposed on the stop plate. A second elastic member is disposed on the sliding assembly. The second elastic member is used to drive the stop plate to move toward the mounting member.

[0011] Furthermore, the sliding assembly includes a fixed base, a guide rail is provided on the fixed base, a slider is slidably disposed on the guide rail, a stop plate is disposed on the slider, a second elastic member is disposed between the guide rail and the slider, one end of the second elastic member abuts against the slider, and the end of the second elastic member away from the slider abuts against the guide rail.

[0012] Furthermore, the linear drive assembly includes a first linear drive member, the moving end of the first linear drive member is provided with a second transmission plate, the second transmission plate has a transmission groove, and the first transmission plate is at least partially located in the transmission groove.

[0013] Furthermore, a pressing assembly is provided on one side of the turntable. The pressing assembly includes a bracket, and a second linear drive is provided at the end of the bracket. A pressure plate is provided at the moving end of the second linear drive. The pressure plate is located at one of the carrier components. The second linear drive drives the pressure plate to move toward or away from the carrier component.

[0014] This application utilizes the cooperation of mounting components, bearing components, and limiting components. The limiting component contains a limiting cavity to accommodate the paper tube, and the limiting component abuts against the outer circumference of the paper tube. This effectively restricts the free rotation and positional deviation of the paper tube during the transfer process, ensuring that the original orientation of the markings on the outer surface of the paper tube relative to the fixture reference point remains unchanged during the transfer process. As a result, in the subsequent assembly process, strict coaxial alignment of the markings on the paper tube body and the markings on the bottom circular piece can be achieved, meeting the requirements of visual consistency of the final product and significantly improving the product's appearance quality and brand recognition.

[0015] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, 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 this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the overall structure of the actual limiting device of this application is shown; Figure 2 A cross-sectional schematic diagram of the limiting device of this application is shown; Figure 3 A schematic diagram of the overall structure of the limiting device according to another embodiment of this application is shown; Figure 4 A cross-sectional schematic diagram of a limiting device according to another embodiment of this application is shown; Figure 5 A schematic diagram of the assembly state of the limiting device, turntable, stop assembly, linear drive assembly and pressing assembly of this application is shown. Figure 6 This diagram shows the limit device, stop assembly, and linear drive assembly of this application in their assembled state. Figure 7 A schematic diagram of the stop component structure of this application is shown.

[0018] Explanation of key component symbols: 110-Mounting component; 120-Bearing component; 1201-Limiting cavity; 1202-Adjusting hole; 121-Boss; 122-Limiting block; 123-Positioning stage; 130-Abutting component; 131-Mounting hole; 132-Abutting component; 133-First elastic component; 140-Closing component; 141-First connecting hole; 142-Second connecting hole; 150-Mounting base; 200-Turntable; 300-Stop component; 310 - Sliding assembly; 311- Fixed base; 312- Guide rail; 313- Slider; 320- Stop plate; 3201- Stop groove; 3202- First transmission plate; 330- Second elastic element; 400- Linear drive assembly; 410- First linear drive element; 420- Second transmission plate; 421- Transmission groove; 500- Pressing assembly; 510- Bracket; 520- Second linear drive element; 530- Pressure plate; a- Paper tube. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] This application provides a paper tube limiting device, including a mounting member 110, a carrier member 120, and a limiting member. The carrier member 120 is disposed at the end of the mounting member 110 and is used to carry the paper tube. The limiting member is disposed on the carrier member 120 and has a limiting cavity 1201 for placing the paper tube. The limiting member is used to abut against the outer peripheral surface of the paper tube.

[0025] Please see Figure 1 and Figure 2 As shown, in order to ensure that the paper tube a does not shift or rotate in the limiting cavity 1201, a limiting member is provided on the carrier 120. The limiting member abuts against the paper tube to restrict the paper tube in the limiting cavity 1201 in the horizontal and rotational directions, so that the paper tube a can be smoothly transferred to the assembly station without changing the marked position.

[0026] Please continue reading. Figure 1 and Figure 2 As shown, in this embodiment, the abutting component 130 has multiple components that are evenly spaced about the axis of the carrier 120, so that multiple positions on the outer wall of the paper tube a can be evenly abutted, thereby ensuring that the paper tube a is located at the center of the limiting cavity 1201.

[0027] In this embodiment, the carrier 120 is a circular plate, the limiting cavity 1201 is circular and adapted to the paper tube, the mounting part 110 is cylindrical, and the carrier 120 and the mounting part 110 are detachably connected. For example, the carrier 120 can be fixedly installed on the mounting part 110 by bolt connection. The carrier 120 and the mounting part 110 are connected separately to facilitate their production and manufacturing.

[0028] The limiting member includes a boss 121 disposed on the bearing member 120, the boss 121 having a limiting cavity 1201, the limiting cavity 1201 being interference fit with the paper tube.

[0029] Please see Figure 1 and Figure 2 As shown, in this embodiment, the boss 121 and the carrier 120 are integrally formed and connected. The limiting cavity 1201 is recessed at the center of the boss 121. In order to limit the paper tube in the horizontal and rotational directions by the boss 121, the limiting cavity 1201 is tightly fitted with the paper tube. That is, the diameter of the limiting cavity 1201 is slightly smaller than that of the paper tube. The paper tube and the limiting cavity 1201 are fitted with an interference fit to restrict the position movement of the paper tube in the limiting cavity 1201. Specifically, friction is generated due to the contact between the paper tube and the inner wall of the limiting cavity 1201. The friction between the two prevents the paper tube from moving.

[0030] In another embodiment, the limiting cavity 1201 is not connected to the paper tube by an interference fit, but is provided with an abutment component 130 in the boss 121, which abuts against the outer peripheral surface of the paper tube.

[0031] Please continue reading. Figure 1 and Figure 2 As shown, in order to facilitate the convenient and quick placement of the paper tube into the limiting cavity 1201, the diameter of the limiting cavity 1201 is slightly larger than the diameter of the paper tube. Multiple abutment components 130 are evenly spaced along the axis of the boss 121. The abutment components 130 extend into the limiting cavity 1201. Therefore, the abutment components 130 abut against the paper tube located in the limiting cavity 1201 to move it in the rotational and horizontal directions, ensuring that the paper tube can be smoothly transferred to the assembly station and its position can be changed.

[0032] Please continue reading. Figure 1 and Figure 2 In the embodiment shown, the abutment component 130 includes a mounting hole 131 that is formed in and passes through the support member 120. An abutment member 132 and a first elastic member 133 are disposed in the mounting hole 131. The abutment member 132 is partially located in the limiting cavity 1201. A closure member 140 is disposed on the outer peripheral surface of the support member 120. One end of the first elastic member 133 abuts against the abutment member 132, and the end of the first elastic member 133 away from the abutment member 132 abuts against the closure member 140.

[0033] like Figure 1 and Figure 2 In the embodiment shown, the closure 140 is a plate that seals the abutment 132 and the first elastic member 133 into the mounting hole 131, thereby preventing the abutment 132 and the first elastic member 133 from disengaging from the outer opening of the mounting hole 131. It can be understood that when the paper tube a is placed in the limiting cavity 1201, the first elastic member 133 will drive the abutment 132 to contact the outer wall of the paper tube a, so that the abutment 132 abuts against the outer wall of the paper tube a, preventing the paper tube a from shifting in the limiting cavity 1201. Furthermore, the friction between the abutment 132 and the outer wall of the paper tube a, as well as the abutting force, prevents the paper tube a from rotating.

[0034] like Figure 1 and Figure 2 As shown, the closure 140 has at least one first connecting hole 141, and the bearing 120 has a second connecting hole 142 on its circumferential surface. The first connecting hole 141 and the second connecting hole 142 are coaxially connected to form a fastening hole, and a fastener is provided in the fastening hole.

[0035] Please continue reading. Figure 1 and Figure 2 In order to fix the closure 140 to the outer peripheral surface of the support 120, a first connecting hole 141 needs to be opened on each closure 140, and a corresponding second connecting hole 142 needs to be opened on the outer wall of the support 120 at the position of the closure 140. The first connecting hole 141 and the second connecting hole 142 are coaxially connected to form a fastening hole. At this time, the closure 140 can be fixed to the peripheral surface of the support 120 by fasteners passing through the fastening hole.

[0036] Specifically, there are two first connecting holes 141 and two second connecting holes 142, both located on both sides of the mounting hole 131. The fastener can be a bolt, and the second connecting hole 142 is a threaded hole. The closure 140 is fixed to the bearing 120 by the cooperation of the bolt and the threaded hole, thus completing the fastening installation.

[0037] like Figure 3 As shown, in another embodiment, the limiting member includes a plurality of limiting blocks 122 disposed on the carrier 120, and a limiting cavity 1201 is formed between the limiting blocks 122. The carrier 120 is provided with a plurality of adjusting holes 1202 disposed radially along the carrier 120. The limiting blocks 122 are connected to the carrier 120 through connecting members and the adjusting holes 1202. The limiting cavity 1201 is interference-fitted with the paper tube, and the end of the limiting block 122 facing the limiting cavity 1201 has an inclined guide surface.

[0038] Please see Figure 3As shown, multiple limiting blocks 122 are evenly arranged on the carrier 120. Specifically, four limiting blocks 122 are evenly arranged circumferentially along the central axis of the carrier 120, and four sets of adjusting holes 1202 are provided on the carrier 120 along its radial direction. The limiting blocks 122 can be installed on the carrier 120 by using a connector and the adjusting holes 1202. At this time, a limiting cavity 1201 that can accommodate the paper tube is formed between the multiple limiting blocks 122. Here, the diameter of the limiting cavity 1201 can be smaller than the diameter of the paper tube to limit the paper tube. That is, the limiting cavity 1201 adopts an interference fit so that the inner wall of the limiting block 122 contacts the circumferential surface of the paper tube. The horizontal and rotational directions of the paper tube are limited by the friction between the limiting block 122 and the paper tube.

[0039] Furthermore, to facilitate easier placement of the paper tube into the limiting cavity 1201, an inclined guide surface is provided on the inner side of each limiting block 122 to guide the paper tube into the limiting cavity 1201. Moreover, since the limiting block 122 is relatively thin, to prevent the paper tube from tilting during placement into the limiting cavity 1201, a positioning platform 123 is detachably connected and installed at the center of the bearing member 120. The positioning platform 123 guides and limits the paper tube to prevent it from tilting or tipping over when placed into the limiting cavity 1201.

[0040] If it is necessary to assemble paper tubes of different sizes, simply install the limiting block 122 onto the carrier 120 by connecting the connector and adjusting the hole 1202 at different positions.

[0041] For example, the adjustment hole 1202 can be a threaded hole, the connecting member is a bolt, and each limiting block 122 can have corresponding elongated holes on both sides. The bolt passes through the elongated hole and is screwed into the threaded hole. As the screwing continues, the limiting block 122 is fixed to the bearing member 120.

[0042] In another embodiment, the paper tube is not interference-fitted with the limiting cavity 1201, that is, the limiting block 122 does not abut against the paper tube to limit its position, but the abutting component 130 inside the limiting block 122 abuts against the paper tube to limit its position. Specifically, the limiting block 122 is provided with an abutting component 130, which abuts against the outer peripheral surface of the paper tube. The abutting component 130 includes a mounting hole 131, and an abutting member 132 and a first elastic member 133 are provided in the mounting hole 131. The abutting member 132 is partially located in the limiting cavity 1201, and one end of the first elastic member 133 abuts against the abutting member 132. A closing member 140 is provided at the end of the mounting hole 131 away from the abutting member 132.

[0043] Please see Figure 3 and Figure 4As shown, the mounting hole 131 passes through the limiting block 122 in the radial direction of the bearing member 120. The mounting hole 131 is provided with an abutment member 132 and a first elastic member 133. Under the action of the elastic force of the first elastic member 133, the abutment member 132 is driven to move toward the limiting cavity 1201, so that the abutment member 132 is partially located in the limiting cavity 1201. When the paper tube is placed, the outer wall of the paper tube will first give the abutment member 132 pressure to overcome the elastic force of the first elastic member 133, so that the first elastic member 133 will contract. As the paper tube is fully inserted into the limiting cavity 1201, the first elastic member 133 will continue to give the abutment member 132 an elastic force so that the abutment member 132 abuts against the outer wall of the paper tube, thereby preventing the paper tube from rotating.

[0044] Furthermore, to prevent the first elastic element 133 from detaching from the port of the mounting hole 131, a closure element 140 is provided at the port of the mounting hole 131, such as... Figure 3 and Figure 4 As shown, in this embodiment, the sealing member 140 is a bolt, and the inner wall of the end of the mounting hole 131 facing away from the limiting cavity 1201 is provided with an internal thread, which enables the sealing member 140 to be screwed into the mounting hole 131 to complete the sealing of the port. Similarly, a positioning platform 123 is also provided at the center of the bearing member 120.

[0045] In the above embodiment, the first elastic element 133 is a spring, and the elastic force of the spring is used to make the abutment 132 abut against the outer wall of the paper tube a.

[0046] In some embodiments, the mounting hole 131 has a circular cross-section and has a first opening and a second opening. The mounting hole 131 communicates with the limiting cavity 1201 through the first opening. The closing member 140 is used to close the second opening. The inner diameter of the first opening is D1. The abutment member 132 is spherical and has a diameter of D2, satisfying that D2 > D1.

[0047] Please continue reading. Figure 2 and Figure 4 As shown, in order to prevent the abutment 132 from disengaging from the mounting hole 131 and entering the limiting cavity 1201 under the elastic force of the first elastic member 133, the diameter of the first opening connecting the mounting hole 131 and the limiting cavity 1201 should be smaller than the diameter of the abutment 132, that is, D2 > D1 is required. Thus, the abutment 132 cannot be disengaged from the mounting hole 131 and pushed into the limiting cavity 1201 under the obstruction of the first opening. Correspondingly, in order to prevent the first elastic member 133 and the abutment 132 from disengaging from the mounting hole 131 from the second opening, the second opening is closed by the closing member 140.

[0048] In some embodiments, the paper tube a limiting device further includes a mounting base 150, and the mounting member 110 is rotatably disposed on the mounting base 150.

[0049] The station where paper tube a is rotated to a preset position is the alignment station. In order to enable the paper tube a to be rotated at the alignment station, the mounting part 110 should be made rotatable so that the marking of paper tube a can be rotated to the preset position under the action of rotation, thus meeting the assembly requirements.

[0050] Specifically, the mounting component 110 is rotatably mounted on the mounting base 150, and the rotation between the mounting component 110 and the mounting base 150 can be achieved by setting a bearing.

[0051] This embodiment also provides a paper tube a production device, which includes at least one paper tube a limiting device according to any one of the above, a turntable 200, a stop component 300, and a linear drive component 400. The mounting member 110 is rotatably disposed on the turntable 200. The stop component 300 is located on one side of the mounting member 110 and is used to abut against the mounting member 110. The linear drive component 400 is located on one side of the stop component 300 and is used to drive the stop component 300 to move away from the mounting member 110.

[0052] Please see Figure 5 As shown, in this embodiment, multiple paper tube a limiting devices are evenly spaced on the turntable 200, thereby improving the efficiency of paper tube a alignment adjustment. To enable the mounting component 110 to rotate at the alignment station, a stop component 300 and a linear drive component 400 are provided on one side. The stop component 300 abuts against the mounting component 110 to prevent its rotation, while the linear drive component 400 releases the abutment state against the mounting component 110 by moving the stop component 300. Furthermore, on the machine tool (not shown) on one side of the alignment station... A sliding rotation component should be provided, consisting of a cylinder, a slide plate, a motor, and rollers. The motor is mounted on the slide plate. When the position of the marking on paper tube a needs to be adjusted according to assembly requirements, the cylinder drives the slide plate to move toward the mounting component 110, thereby causing the rollers to abut against the circumference of the mounting component 110 and drive it to rotate until the marking on paper tube a reaches the preset position. Then, the stop component 300 abuts against the circumference of the mounting component 110 to prevent it from rotating. Then, the sliding rotation component returns to its initial position, thus releasing the state of driving the mounting component 110 to rotate and completing the alignment.

[0053] It should be noted that the marking of paper tube a in the above-mentioned manner can be positioned by taking a picture with an industrial camera, and the captured image is transmitted to the processor, which then determines whether the marking has reached the preset position.

[0054] In some embodiments, the stop assembly 300 includes a sliding assembly 310, on which a stop plate 320 is slidably disposed. The end of the stop plate 320 facing the mounting member 110 is provided with a stop groove 3201. A first transmission plate 3202 is also provided on the stop plate 320. A second elastic member 330 is provided on the sliding assembly 310. The second elastic member 330 is used to drive the stop plate 320 to move toward the mounting member 110.

[0055] like Figure 6 and Figure 7 As shown, after the marking of paper tube a reaches the preset position, the linear drive assembly 400 no longer drives the stop plate 320 away from the mounting member 110 by overcoming the elastic force of the second elastic member 330. That is, at this time, the stop plate 320 is driven to move toward the mounting member 110 under the elastic force of the second elastic member 330 until the stop plate 320 abuts against the circumferential surface of the mounting member 110, that is, the inner sidewall of the stop groove 3201 abuts against the circumferential surface of the mounting member 110 to prevent the mounting member 110 from rotating.

[0056] In some embodiments, the sliding assembly 310 includes a fixed base 311, a guide rail 312 is provided on the fixed base 311, a slider 313 is slidably provided on the guide rail 312, a stop plate 320 is provided on the slider 313, and a second elastic member 330 is provided between the guide rail 312 and the slider 313. One end of the second elastic member 330 abuts against the slider 313, and the end of the second elastic member 330 away from the slider 313 abuts against the guide rail 312.

[0057] Please see Figure 7 As shown, there are two fixed seats 311, both of which are fixed on the machine base. Two guide rails 312 are fixedly installed between the two fixed seats 311. The slider 313 is slidably disposed on the frame formed by the two guide rails 312. Each guide rail 312 is provided with a second elastic element 330. The two ends of the second elastic element 330 abut against the slider 313 and the fixed seat 311 respectively. Under the elastic force of the second elastic element 330, the slider 313 is driven to move toward the mounting part 110, thereby allowing the stop groove 3201 of the stop plate 320 to abut against the circumferential surface of the mounting part 110.

[0058] In this embodiment, the guide rail 312 is a rod with a circular cross-section, and the second elastic element 330 is a spring, which is sleeved on the rod.

[0059] In some embodiments, the linear drive assembly 400 includes a first linear drive member 410, the moving end of the first linear drive member 410 is provided with a second transmission plate 420, the second transmission plate 420 has a transmission groove 421, and the first transmission plate 3202 is at least partially located in the transmission groove 421.

[0060] See Figure 6As shown, in order to achieve transmission with multiple stop plates 320, a linear drive assembly 400 is set at the center of the turntable 200. It can be understood that the linear drive assembly 400 does not rotate with the turntable 200; that is, the linear drive assembly 400 only drives the stop plate 320 at the alignment station to move away from the mounting member 110. The linear drive assembly 400 consists of a first linear drive member 410 and a second transmission plate 420. The second transmission plate 420 has a transmission groove 421. The first transmission plate 3202 at the alignment station is located within the transmission groove 421. When it is necessary to move the mounting member 110... When unlocking, the first linear drive 410 drives the second transmission plate 420 to move away from the mounting member 110. The inner wall of the transmission groove 421 abuts against the first transmission plate 3202, thereby driving the stop plate 320 to move away from the mounting member 110, releasing the state of abutting against the mounting member 110. Similarly, when the stop plate 320 needs to abut against the mounting member 110 to achieve a stop, the first linear drive 410 only needs to drive the second transmission plate 420 to move towards the mounting member 110. Under the elastic force of the second elastic member 330, the stop plate 320 abuts against the mounting member 110 to achieve locking.

[0061] In this embodiment, the first linear drive 410 is a cylinder.

[0062] In some embodiments, a pressing assembly 500 is provided on one side of the turntable 200. The pressing assembly 500 includes a bracket 510. A second linear drive member 520 is provided at the end of the bracket 510. A pressure plate 530 is provided at the moving end of the second linear drive member 520. The pressure plate 530 is located at one of the carrier members 120. The second linear drive member 520 drives the pressure plate 530 to move toward or away from the carrier member 120.

[0063] See Figure 5 As shown, in order to ensure that the paper tube a is fully inserted into the limiting cavity 1201, a pressing component 500 is provided at the alignment station. Specifically, the pressing plate 530 is located above the alignment station. The second linear drive component 520 drives the pressing plate 530 to press down on the paper tube a at the alignment station until the bottom surface of the paper tube a is released from the bottom surface of the limiting cavity 1201, so that the paper tube a is fully inserted into the limiting cavity 1201.

[0064] In this embodiment, the second linear drive 520 is a cylinder.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A paper tube limiting device, characterized in that, include: Mounting component (110); A carrier (120) is disposed at the end of the mounting member (110) and is used to carry the paper tube; A limiting member is provided on the carrier (120). The limiting member has a limiting cavity (1201) for placing the paper tube and for abutting against the outer circumferential surface of the paper tube.

2. The paper tube limiting device according to claim 1, characterized in that, The limiting member includes a boss (121) disposed on the bearing member (120), and the boss (121) has the limiting cavity (1201). The limiting cavity (1201) is interference-fitted with the paper tube; or, the boss (121) is provided with an abutment component (130), which abuts against the outer circumferential surface of the paper tube.

3. The paper tube limiting device according to claim 1, characterized in that, The limiting member includes a plurality of limiting blocks (122) disposed on the carrier (120), and the limiting cavity (1201) is formed between the limiting blocks (122). The carrier (120) has a plurality of adjusting holes (1202) arranged radially along the carrier (120). The limiting blocks (122) are connected to the carrier (120) through connecting members and the adjusting holes (1202). The limiting cavity (1201) is interference-fitted with the paper tube, and the end of the limiting block (122) facing the limiting cavity (1201) has an inclined guide surface; or, the limiting block (122) is provided with an abutting component (130), and the abutting component (130) abuts against the outer peripheral surface of the paper tube.

4. The paper tube limiting device according to claim 2 or 3, characterized in that, The abutment component (130) includes a mounting hole (131), in which an abutment (132) and a first elastic member (133) are disposed. The abutment (132) is partially located in the limiting cavity (1201). One end of the first elastic member (133) abuts against the abutment (132). A closure member (140) is disposed at the end of the mounting hole (131) away from the abutment (132).

5. The paper tube limiting device according to claim 4, characterized in that, The mounting hole (131) has a circular cross-section and has a first opening and a second opening. The mounting hole (131) communicates with the limiting cavity (1201) through the first opening. The closing member (140) is used to close the second opening. The inner diameter of the first opening is D1. The abutment member (132) is spherical and has a diameter of D2, satisfying that D2 > D1.

6. A paper tube production equipment, characterized in that, include: At least one paper tube limiting device according to any one of claims 1 to 5; Turntable (200), the mounting component (110) is rotatably mounted on the turntable (200); A stop assembly (300) is located on one side of the mounting member (110) and is used to abut against the mounting member (110). A linear drive assembly (400) is located on one side of the stop assembly (300) and is used to drive the stop assembly (300) to move away from the mounting member (110).

7. The paper tube production equipment according to claim 6, characterized in that, The stop assembly (300) includes a sliding assembly (310), on which a stop plate (320) is slidably disposed. The stop plate (320) has a stop groove (3201) at its end facing the mounting member (110). The stop plate (320) is also provided with a first transmission plate (3202). The sliding assembly (310) is provided with a second elastic member (330), which is used to drive the stop plate (320) to move toward the mounting member (110).

8. The paper tube production equipment according to claim 7, characterized in that, The sliding assembly (310) includes a fixed base (311), a guide rail (312) is provided on the fixed base (311), a slider (313) is slidably provided on the guide rail (312), a stop plate (320) is provided on the slider (313), and a second elastic member (330) is provided between the guide rail (312) and the slider (313). One end of the second elastic member (330) abuts against the slider (313), and the end of the second elastic member (330) away from the slider (313) abuts against the guide rail (312).

9. The paper tube production equipment according to claim 7, characterized in that, The linear drive assembly (400) includes a first linear drive member (410), the moving end of the first linear drive member (410) is provided with a second transmission plate (420), the second transmission plate (420) has a transmission groove (421), and the first transmission plate (3202) is at least partially located in the transmission groove (421).

10. The paper tube production equipment according to claim 6, characterized in that, A pressing assembly (500) is provided on one side of the turntable (200). The pressing assembly (500) includes a bracket (510). A second linear drive (520) is provided at the end of the bracket (510). A pressure plate (530) is provided at the moving end of the second linear drive (520). The pressure plate (530) is located at one of the bearing members (120). The second linear drive (520) drives the pressure plate (530) to move toward or away from the bearing member (120).

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