Automatic pipe pressing device

Abstract

The utility model discloses a kind of automatic pipe buckling devices, comprising: base, the base is opened and is placed with the placement hole for placing pipe with plugging element;Driving mechanism, is set on the base;At least two clamping blocks, be located on the base and can be moved along the radial direction of the placement hole, all clamping blocks are enclosed to clamp the pipe in center;At least one extrusion knife, be located on the base and can be moved along the radial direction of the placement hole, for extruding the clamped pipe side wall;Transmission mechanism, connect between the driving mechanism, the clamping block and the extrusion knife;The transmission mechanism is configured as: in response to the driving of the driving mechanism, synchronously drive all the clamping block and the extrusion knife radial motion, and control the movement of the clamping block and the extrusion knife has predetermined phase difference.The utility model has the advantages that: pipe side wall plastic deformation and card into plugging element groove can be realized automatically.

Description

Technical Field

[0001] This utility model relates to the field of pipe processing technology, specifically to an automatic pipe crimping device. Background Technology

[0002] In piping systems, it is often necessary to install sealing components (such as pipe caps, plugs, etc.) at the ends of pipes. To achieve a secure connection, grooves are usually provided on the sidewalls of the sealing components, and external force is applied to the sidewalls of the pipe ends to cause them to deform plastically and fit into the grooves, thereby achieving a mechanical interlock.

[0003] Currently, this process is mostly carried out manually or semi-automatically, which suffers from low efficiency, uneven clamping pressure, and unstable connection quality. Although some automated equipment exists, its structure is complex, usually using multiple power sources to control the clamping and pressing actions separately, resulting in high equipment costs and difficulties in coordinated control, making it difficult to achieve efficient production while ensuring accuracy.

[0004] Therefore, there is an urgent need for an automated clamping device with a reasonable structure that can automatically and reliably complete the clamping and pressing sequence using a single power source. Utility Model Content

[0005] The purpose of this invention is to provide an automatic pipe crimping device that can effectively solve the problems of low connection efficiency and unstable quality of existing pipes and sealing components.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] An automatic pipe clamping device is used to clamp the pipe sidewall into a groove of an end-sealing member by pressing it, comprising:

[0008] A base, wherein the base has a placement hole for placing a pipe with a sealing component;

[0009] The drive mechanism is mounted on the base;

[0010] At least two clamping blocks are provided on the base and can move radially along the placement hole, and all clamping blocks together enclose the tube located at the center;

[0011] At least one extrusion blade, disposed on the base and movable radially along the placement hole, is used to extrude the sidewall of the clamped pipe.

[0012] A transmission mechanism is connected between the drive mechanism, the clamping block, and the extrusion blade;

[0013] The transmission mechanism is configured to: synchronously drive all the clamping blocks and the extrusion blade to perform radial movement in response to the drive mechanism, and control the movement of the clamping blocks and the extrusion blade to have a predetermined phase difference.

[0014] In the above-mentioned automatic pipe crimping device, the transmission mechanism includes a turntable coaxially arranged with the placement hole, and the turntable is provided with a first drive groove corresponding to each of the clamping blocks and a second drive groove corresponding to each of the extrusion blades;

[0015] Each of the clamping blocks engages with the corresponding first drive slot via a first connector;

[0016] Each of the extrusion blades is engaged with the corresponding second drive groove via a second connector;

[0017] The first drive groove includes a driving section and a stationary section that are connected. The profile of the first drive groove is configured such that the driving section drives the clamping block to move radially to the position of clamping the pipe, and the stationary section keeps the clamping block in a clamped state.

[0018] The profile of the second drive groove is configured to drive the extrusion blade to move continuously radially;

[0019] The stationary section of the first drive groove and the section of the second drive groove where the extrusion blade performs the extrusion correspond in the rotation angle of the turntable.

[0020] In the above-mentioned automatic pipe crimping device, the stationary section of the first drive groove is an arc groove with the center of the turntable as the center; the radial distance from the center of the turntable to the drive section of the first drive groove gradually decreases from the end away from the stationary section to the end closer to the stationary section; along the rotation direction of the turntable driving the extrusion knife to extrude, the radius of the second drive groove to the center of the turntable gradually decreases.

[0021] In the aforementioned automatic pipe crimping device, the driving mechanism includes a power component, a rack driven by the power component, and a gear meshing with the rack. The gear is coaxially connected to the turntable to drive its rotation.

[0022] In the aforementioned automatic pipe crimping device, the transmission mechanism further includes at least three positioning wheels, each of which is mounted on the base and abuts against the outer periphery of the turntable to limit the radial offset of the turntable.

[0023] In the above-mentioned automatic pipe crimping device, the base is provided with a clamping groove for sliding the clamping block and a cutting groove for sliding the extrusion knife, centered on the center of the placement hole.

[0024] In the aforementioned automatic pipe crimping device, the extension path of the blade groove intersects with the extension path of the clamping groove, and the crimping blade passes through the clamping groove area and contacts the pipe wall.

[0025] In the aforementioned automatic pipe crimping device, the clamping block or the joint of adjacent clamping blocks is provided with an opening for the crimping knife to pass through.

[0026] The aforementioned automatic pipe clamping device also includes a lifting mechanism located at the bottom of the placement hole. The lifting mechanism includes a liftable lifting block and a vertical lifting drive for driving the lifting block.

[0027] In the aforementioned automatic pipe crimping device, the base is equipped with a sensor for sensing whether there is a pipe in the placement hole.

[0028] Compared with the prior art, the advantages of this utility model are:

[0029] By coordinating a transmission mechanism with a single drive mechanism, the two key actions of radial clamping of the clamping block and radial extrusion of the extrusion blade are driven by the same power source. Furthermore, the timing logic of "clamping first, then extrusion" is achieved through phase difference control preset by the transmission mechanism. This design eliminates the need for manual intervention in action switching and simultaneous debugging of multiple power sources. Single-process efficiency is increased by 3-5 times compared to manual methods, and it can be seamlessly integrated into assembly line production, solving the problem of "difficulty in balancing high-efficiency production and precision control" in existing technologies.

[0030] At least two clamping blocks move synchronously along the radial direction of the placement hole, forming a "circular clamp" on the pipe to ensure that the center of the pipe coincides with the center of the placement hole and avoid radial offset. The phase difference preset by the transmission mechanism forces the extrusion knife to start extrusion only after the clamping blocks "fully clamp the pipe". The trajectory and force of the extrusion knife moving radially are precisely limited by the transmission mechanism, so that the degree of plastic deformation of the pipe and the depth of insertion into the groove of the sealing component are highly uniform.

[0031] Furthermore, the transmission mechanism includes a turntable coaxially arranged with the placement hole. The turntable has a first drive groove corresponding to each clamping block and a second drive groove corresponding to each extrusion blade. Each clamping block engages with its corresponding first drive groove via a first connector. Each extrusion blade engages with its corresponding second drive groove via a second connector. The first drive groove includes a connected drive section and a stationary section. The profile of the first drive groove is configured such that the drive section drives the clamping block to move radially to the position of clamping the pipe, and the stationary section keeps the clamping block in a clamped state. The profile of the second drive groove is configured such that it drives the extrusion blade to move continuously radially. The stationary section of the first drive groove and the section of the second drive groove that drives the extrusion blade to extrude correspond to each other in the rotation angle of the turntable. Through the turntable and the drive slots with different structures set on the turntable, the turntable drives all drive slots to rotate synchronously when it rotates, ensuring that multiple clamping blocks move synchronously in the radial direction, and the clamping force is evenly distributed. This prevents the pipe from shifting due to excessive clamping force on one side. The "continuous radial movement" of the extrusion knife and the "clamping-holding" action of the clamping blocks are related through the rotation angle of the same turntable. No additional power distribution or transmission conversion components are required, which greatly improves the accuracy of the crimping position.

[0032] Furthermore, the stationary section of the first driving groove is an arc-shaped groove centered on the center of the turntable; the radial distance from the center of the turntable gradually decreases from the end furthest from the stationary section to the end closest to the stationary section of the first driving groove; along the rotational direction in which the turntable drives the extrusion blade to extrude, the radius of the second driving groove from the center of the turntable gradually decreases. When the first connecting member rotates with the turntable within the arc-shaped groove, it only performs circumferential motion without radial displacement. This structure mechanically forces the clamping block to be "absolutely stationary" during the extrusion stage. Even if the extrusion blade applies radial extrusion force to the pipe, the clamping block will not loosen or shift due to the reaction force. When the turntable rotates, the first connecting member slides along the gradually changing driving section, causing the clamping block to move "slowly and uniformly" radially, with the clamping force increasing linearly rather than being an instantaneous impact. The gradually decreasing radius of the second drive groove from the center of the turntable creates a linear "angle-stroke" relationship in the radial movement of the extrusion blade. The extrusion depth can be precisely set by controlling the rotation angle of the turntable, eliminating the need to rely on electronic sensors to detect the stroke and avoiding sensor errors. In mass production, the extrusion deformation of all pipes is uniformly controlled by the rotation angle of the turntable, greatly improving the stability of the crimping quality.

[0033] Furthermore, the driving mechanism includes a power component, a rack driven by the power component, and a gear meshing with the rack. The gear is coaxially connected to the turntable to drive its rotation. The teeth of the rack and gear mesh tightly, ensuring no slippage or backlash during transmission. Power can be precisely transmitted to the gear in a 1:1 ratio, thereby driving the turntable to rotate at a uniform speed, avoiding clamping / extrusion deviations caused by power transmission errors. During the crimping process, the extrusion blade generates a reaction force when extruding the tube. If the driving mechanism has poor impact resistance, "gear reversal" or "transmission component displacement" can easily occur. The rigid meshing structure of the rack and gear can effectively withstand the reaction force. By limiting the reverse rotation of the gear through tooth meshing, it ensures that the turntable maintains a stable speed under the action of the extrusion reaction force, avoiding crimping interruption or accuracy failure caused by the reaction force.

[0034] Furthermore, the transmission mechanism also includes at least three positioning wheels, each mounted on the base and abutting against the outer periphery of the turntable, to limit the radial offset of the turntable. The three positioning wheels, not on the same straight line, form a "stable support plane," applying radial constraint forces to the turntable from different directions around its outer periphery, forcibly ensuring that the rotation axis of the turntable always coincides with the axis of the placement hole. Even under the influence of compressive reaction forces or loose connections, radial wobbling of the turntable can be avoided.

[0035] Furthermore, the base is radially provided with a clamping groove for the clamping block to slide and a cutting groove for the extrusion blade to slide, centered on the center of the placement hole. The clamping block moves only within its dedicated clamping groove, and the extrusion blade moves only within its dedicated cutting groove. The movement paths of the two are completely isolated by the groove partitions, thus avoiding collisions without relying on electronic programs or mechanical avoidance structures.

[0036] Furthermore, the extension path of the blade groove intersects with the extension path of the clamping groove, and the extrusion blade passes through the clamping groove area to contact the pipe wall. This intersecting design of the blade groove and clamping groove allows the radial movement path of the extrusion blade to "pass through the clamping groove area where the clamping block is located," directly avoiding the main structure of the clamping block and reaching the target extrusion position on the pipe sidewall. This avoids situations where the extrusion blade cannot reach the pipe or the extrusion position is offset due to obstruction by the clamping block, ensuring that each extrusion action is precisely applied to the area of ​​the pipe to be deformed.

[0037] Furthermore, the clamping block or the joint of adjacent clamping blocks is provided with an opening for the extrusion blade to pass through. The opening can precisely correspond to the position of the sealing component groove on the side wall of the pipe. When the clamping blocks surround and clamp the pipe, the opening is exactly aligned with the target extrusion area on the side wall of the pipe. When the extrusion blade moves along the blade groove, it can directly pass through the opening to reach the pipe wall, completely eliminating the obstruction of the solid structure of the clamping block.

[0038] Furthermore, it also includes a lifting mechanism located at the bottom of the placement hole. The lifting mechanism includes a liftable lifting block and a vertical lifting drive for driving the lifting block. The height of the lifting block can be adjusted by the vertical lifting drive to push the pipe to a preset axial position, avoiding positional displacement caused by gravity falling. At the same time, the lifting block provides stable support to the bottom of the pipe, preventing the pipe from changing its clamping position due to axial movement during clamping and compression.

[0039] Furthermore, the base is equipped with a sensor for detecting whether there is pipe material in the placement hole. The sensor can detect the presence of pipe material in the placement hole in real time before or during equipment startup. If "no material" is detected, the equipment will be stopped or prevented from starting, thus avoiding meaningless empty movements of the clamping block and extrusion blade from the source and reducing wear of core components caused by empty operation. Attached Figure Description

[0040] Figure 1 This is a perspective view of an automatic pipe crimping device according to the present invention;

[0041] Figure 2 This is a top view of the automatic pipe crimping device of this utility model after the gears have been removed;

[0042] Figure 3 This is a perspective view of the clamping block, extrusion blade, and machine base in this utility model.

[0043] Figure 4 This is an exploded view of an automatic pipe crimping device according to the present invention;

[0044] Figure 5 This is a schematic diagram of the structure of the clamping block and the extrusion knife in this utility model;

[0045] Figure 6 This is a top view of the turntable in this utility model.

[0046] The attached figures are labeled as follows:

[0047] The components include: base 100, placement hole 110, clamping groove 120, knife groove 130, drive mechanism 200, power component 210, rack 220, gear 230, clamping block 300, first connector 310, opening 320, extrusion knife 400, second connector 410, transmission mechanism 500, turntable 510, first drive groove 520, drive section 521, stationary section 522, second drive groove 530, positioning wheel 540, lifting mechanism 600, lifting block 610, vertical lifting drive component 620, sensor 700, and pipe 800. Detailed Implementation

[0048] An automatic pipe clamping device for clamping a pipe 800 into a groove of an end-sealing member by pressing the sidewall of the pipe, comprising:

[0049] The base 100 has a placement hole 110 for placing a pipe 800 with a sealing component;

[0050] A drive mechanism 200 is disposed on the base 100;

[0051] At least two clamping blocks 300 are disposed on the base 100 and can move radially along the placement hole 110. All clamping blocks 300 together enclose the tube 800 located at the center.

[0052] At least one extrusion blade 400 is disposed on the base 100 and is radially movable along the placement hole 110 for extruding the sidewall of the clamped tube 800.

[0053] The transmission mechanism 500 is connected between the drive mechanism 200, the clamping block 300, and the extrusion blade 400;

[0054] The transmission mechanism 500 is configured to: synchronously drive all the clamping blocks 300 and the extrusion blade 400 to perform radial movement in response to the drive mechanism 200, and control the movement of the clamping blocks 300 and the extrusion blade 400 to have a predetermined phase difference.

[0055] By cooperating with the transmission mechanism 500 and the single drive mechanism 200, the two key actions of "radial clamping by clamping block 300" and "radial extrusion by extrusion blade 400" are driven by the same power source. Furthermore, through the phase difference control preset by the transmission mechanism 500, a "clamping first, then extrusion" sequence logic is achieved (i.e., clamping block 300 first positions itself to fix pipe 800, and then extrusion blade 400 follows to complete the crimping). This design eliminates the need for manual intervention in action switching and simultaneous debugging of multiple power sources, increasing single-process efficiency by 3-5 times compared to manual methods. It can also be seamlessly integrated into assembly line production, solving the problem of "difficulty in balancing high-efficiency production and precision control" in existing technical solutions.

[0056] At least two clamping blocks 300 move synchronously along the radial direction of the placement hole 110, together forming a "ring-like clamp" on the pipe 800, ensuring that the center of the pipe 800 coincides with the center of the placement hole 110, and avoiding radial offset; the phase difference preset by the transmission mechanism 500 forces the extrusion knife 400 to start extrusion only after the clamping blocks 300 "fully clamp the pipe 800", and the trajectory and force of the extrusion knife 400 moving radially are precisely limited by the transmission mechanism 500, so that the degree of plastic deformation of the pipe 800 and the depth of insertion into the groove of the sealing component are highly uniform.

[0057] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0059] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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, an electrical connection, or a connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0061] See Figures 1 to 6 This invention relates to an automatic pipe clamping device. The device compresses the side wall of a pipe 800 to engage it within a groove of an end-sealing component. The pipe 800 can be rectangular or circular. Since the end of the pipe 800 needs to be sealed, a sealing component is placed there. If the connection between the sealing component and the pipe 800 relies solely on friction or an interference fit, it is difficult to ensure a long-term and effective connection. Therefore, a groove is provided on the side wall of the sealing component, and the pipe 800 is clamped into this groove by compression, achieving a secure connection.

[0062] The specific automatic crimping device for the pipe 800 includes: a base 100, a drive mechanism 200, at least two clamping blocks 300, at least one crimping blade 400, and a transmission mechanism 500. The base 100 has a placement hole 110 for placing the pipe 800 with a sealing component. The pipe 800 is vertically inserted into the placement hole 110, which is slightly larger than the maximum diameter of the pipe 800 to facilitate smooth insertion. The drive mechanism 200 is fixedly connected to the base 100 and primarily provides driving force. Depending on the characteristics of the transmission mechanism 500, the drive mechanism 200 can be a motor or a hydraulic cylinder, or other power component.

[0063] The clamping block 300 is mainly used to fix the pipe 800 inserted into the placement hole 110, so that the subsequent extrusion blade 400 can accurately extrude the side wall of the pipe 800. The clamping block 300 is set on the machine base 100 and can move radially along the placement hole 110. That is, the clamping block 300 can move closer to or away from the placement hole 110. When it is close, it clamps the pipe 800, and when it is far away, it facilitates the placement and removal of the pipe 800. All the clamping blocks 300 together enclose and clamp the pipe 800 located at the center of the enclosed area. The "enclosed area" here means that the clamping blocks 300 are located on the same circumference after they are closed. All the clamping blocks 300 can form a closed ring, or there can be gaps between adjacent clamping blocks 300. When there are gaps, the clamping blocks 300 can clamp various sizes of pipes 800, making them more adaptable.

[0064] The number of extrusion blades 400 can be set according to the number and shape of the grooves. For example, if there are only four grooves spaced apart circumferentially, then four extrusion blades 400 are set accordingly, with one extrusion blade 400 aligned with one groove. If the grooves are arranged in a ring shape circumferentially, then two, three, or four extrusion blades 400 can be set to form the shape of the grooves. The extrusion blades 400 are also set on the machine base 100 and can move radially along the placement hole 110.

[0065] The transmission mechanism 500 primarily transmits the power from the drive mechanism 200 to the clamping blocks 300 and the extrusion blades 400. In other words, after being driven by the drive mechanism 200, the transmission mechanism 500 simultaneously transmits power to both the clamping blocks 300 and the extrusion blades 400. The transmission mechanism 500 is configured to synchronously drive all the clamping blocks 300 and extrusion blades 400 in radial motion in response to the drive mechanism 200, and to control the movements of the clamping blocks 300 and the extrusion blades 400 to have a predetermined phase difference. This predetermined phase difference means that the clamping action of the clamping blocks 300 and the extrusion action of the extrusion blades 400 are sequential; the clamping blocks 300 clamp the pipe 800 first, and then the extrusion blades 400 extrude the sidewall of the pipe 800.

[0066] The pipe 800 with the sealing component is precisely positioned through the mounting hole 110 of the base 100. Then, with the coordinated action of the clamping block 300 and the extrusion blade 400, the sidewall of the pipe 800 deforms as expected and engages with the groove of the sealing component. The structural design ensures the reliable realization of the core function of a secure connection between the pipe 800 and the sealing component, solving the critical connection problem of sealing component installation in pipeline systems. The device uses at least two clamping blocks 300 to form a suitable clamping structure based on the outer shape of the pipe 800, eliminating the need for separate clamping components for different pipe 800s. This significantly improves the device's adaptability to various pipe specifications and reduces the cost and time of equipment replacement or adjustment. The transmission mechanism 500, as the core connection and control component, not only enables the synchronous drive of the clamping block 300 and the extrusion blade 400 by the drive mechanism 200, but also precisely controls the predetermined phase difference between their movements. This precise control avoids problems such as pipe damage and insecure crimping caused by disordered timing of clamping and squeezing actions, providing structural assurance for high-quality crimping.

[0067] The device, through the cooperation of the drive mechanism 200 and the transmission mechanism 500, automates the process of clamping the pipe 800 with the clamping block 300 and extruding the sidewall of the pipe 800 with the extrusion blade 400, eliminating the need for manual intervention in key operation steps. Compared to manual or semi-automatic crimping methods, this significantly improves the efficiency of crimping operations, reduces labor costs, and avoids the impact of individual differences caused by manual operation on crimping quality. On one hand, multiple clamping blocks 300 together enclose and clamp the pipe 800, ensuring that the pipe 800 remains centered and stable during crimping, avoiding extrusion position deviations caused by pipe 800 offset. On the other hand, the predetermined phase difference controlled by the transmission mechanism 500 ensures that the clamping action is fully completed before extrusion, resulting in uniform deformation of the sidewall of the pipe 800 and accurate insertion into the sealing groove, effectively improving the consistency and reliability of the crimped connection and solving the problems of uneven crimping pressure and unstable connection quality in traditional methods.

[0068] The following is a detailed description of the structure of the transmission mechanism 500:

[0069] The transmission mechanism 500 includes a turntable 510 coaxially arranged with the placement hole 110. The turntable 510 has a first drive groove 520 corresponding to each clamping block 300 and a second drive groove 530 corresponding to each extrusion blade 400. To simplify the design, in this embodiment, each clamping block 300 is provided with a first drive groove 520, and each extrusion blade 400 is also provided with a second drive groove 530. Each clamping block 300 is provided with a first connector 310 that cooperates with the corresponding first drive groove 520, and each extrusion blade 400 is provided with a second connector 410 that cooperates with the corresponding second drive groove 530. The first connector 310 and the second connector 410 can adopt the same structure, or they can adopt different structures according to their respective force magnitudes, such as a slide bar, a slider, or a rolling bearing. It is necessary to ensure that the connector can slide along the corresponding drive groove to drive the extrusion blade 400 or the clamping block 300 to move radially.

[0070] To achieve a predetermined phase difference between the movements of the clamping block 300 and the extrusion blade 400, the first drive groove 520 includes a connected drive section 521 and a stationary section 522. The profile of the first drive groove 520 is configured such that the drive end drives the clamping block 300 to move radially to the position where it clamps the pipe 800, and the stationary section 522 keeps the clamping block 300 in a clamped state. That is, when the first connector 310 moves within the drive section 521, it can drive the clamping block 300 to move radially, continuously approaching the pipe 800 until all the clamping blocks 300 clamp the pipe 800. After the clamping blocks 300 clamp the pipe 800, the first connector 310 enters the stationary section 522. The function of the stationary section 522 is to maintain the clamping state of all the clamping blocks 300, that is, when the first connector 310 moves relatively within the stationary section 522, the clamping blocks 300 remain stationary.

[0071] The profile of the second drive groove 530 is configured such that the extrusion blade 400 moves continuously radially. That is, when the second connector 410 moves relative to the second drive groove 530, the extrusion blade 400 will move continuously radially, for example, until it touches the tube 800 and extrudes the tube 800.

[0072] The stationary section 522 of the first drive groove 520 and the section of the second drive groove 530 where the extrusion knife 400 is driven to extrude correspond to the rotation angle of the turntable 510. That is, when the turntable 510 rotates to this angle, the first connector 310 slides into the stationary section 522 of the first drive groove 520, and at the same time, the second connector 410 also drives the extrusion knife 400 to touch the outer wall of the groove, ready to start the extrusion operation.

[0073] The first drive groove 520 is divided into a drive section 521 and a stationary section 522, and the stationary section 522 of the first drive groove 520 corresponds to the extrusion section of the second drive groove 530 in terms of the rotation angle of the turntable 510. This design directly defines the action sequence through the mechanical structure of the turntable 510. The drive section 521 first drives the clamping block 300 to move radially to clamp the tube 800, and then the stationary section 522 keeps the clamping block 300 in a stable clamping state. At the same time, the second drive groove 530 drives the extrusion blade 400 to continuously extrude radially. Compared with solutions that rely on electronic control or external sensors to determine the timing, the inherent timing correlation of the mechanical structure avoids action disorder caused by signal delay or sensor failure, ensuring that the clamping is sufficient before extrusion. This effectively prevents the tube 800 from shifting or the extrusion position from deviating due to insufficient clamping, or the tube 800 from uneven deformation due to premature extrusion. From a structural perspective, this ensures the accuracy and reliability of the crimping connection. The turntable 510 is coaxially arranged with the placement hole 110. The first drive groove 520 and the second drive groove 530 rotate synchronously with the turntable 510. The actions of the clamping block 300 and the extrusion knife 400 are both triggered by the rotation angle of the same turntable 510, and their actions are seamlessly connected. No additional transmission conversion components are needed, reducing errors in the action transmission process and further improving the continuity of the "clamping-extrusion" sequence. This ensures that the extrusion knife 400 intervenes at the optimal time for stable clamping of the pipe 800, increasing the success rate of the pipe 800's sidewall deformation and insertion into the sealing component groove. The transmission mechanism 500 simultaneously drives all clamping blocks 300 and extrusion knives 400 through a single turntable 510, eliminating the need for separate transmission components for clamping and extrusion actions. Compared to a distributed transmission structure, this integrated design significantly reduces the number of transmission components, lowers the risk of failure due to misalignment between components, simplifies the overall structure of the device, and improves stability and durability during operation.

[0074] Furthermore, to achieve the aforementioned function of the stationary section 522, the stationary section 522 has an arcuate groove centered on the center of the turntable 510. This ensures that when the first connecting member 310 moves within the stationary section 522, it will not move radially, thus ensuring that the clamping block 300 is in a clamped state. This structure ensures that the first connecting member 310 of the clamping block 300 maintains a fixed radial distance from the center of the turntable 510 as it rotates with the turntable 510 within the stationary section 522. Compared to non-concentric arcs or other shaped stationary sections 522, concentric arc grooves can completely restrict the radial displacement of clamping block 300 from a mechanical structure perspective. This prevents clamping block 300 from experiencing slight radial loosening or displacement due to factors such as vibration and force feedback during the operation of extrusion knife 400, ensuring that pipe 800 is always in a stable clamped state. This provides a precise and fixed reference for subsequent extrusion actions, fundamentally eliminating problems such as extrusion position deviation and uneven deformation of pipe 800 caused by unstable clamping.

[0075] The structure of the drive end is such that the radial distance from the center of the turntable 510 gradually decreases from the end furthest from the stationary section 522 to the end closest to the stationary section 522. Figure 6 As shown, the left end of the drive end is farther from the center of the turntable 510 than the right end. When the turntable 510 rotates clockwise, the first connector 310 slides within the drive end, moving from the end of the drive end with a larger diameter from the center of the turntable 510 to the end with a smaller diameter. The first connector 310 moves closer to the circle of the turntable 510 radially, meaning the driving clamping block 300 moves towards the center. This gradual structure ensures that the clamping block 300, driven by the drive section 521, moves radially towards the center of the pipe 800 in a continuous and smooth motion, rather than a sudden movement. This gentle clamping method avoids impact damage to the pipe 800 caused by excessively fast clamping speed or sudden changes in force (especially for thin-walled or brittle pipes 800). At the same time, it allows the clamping force to gradually accumulate to the preset value, ensuring that the clamping block 300 fits tightly against the outer circumference of the pipe 800 and is subjected to uniform force, further improving the reliability of clamping and its adaptability to pipes 800 of different materials.

[0076] The rotational direction along which the extrusion blade 400 is driven to extrude along the turntable 510, that is... Figure 6 From the perspective of [unclear context], as the turntable 510 rotates clockwise, the radius from the second drive groove 530 to the center of the turntable 510 gradually decreases. This contour design allows the second connector 410 of the extrusion knife 400 to drive the extrusion knife 400 to continuously and uniformly approach the sidewall of the tube 800 along the radial direction of the placement hole 110 and apply extrusion force when rotating with the turntable 510. Compared to a non-gradual drive groove, this structure ensures that the extrusion force increases uniformly during the extrusion process, avoiding excessive local deformation (such as cracking or wrinkling) or insufficient deformation (inability to fit into the sealing member groove) of the sidewall of the tube 800 due to sudden changes in extrusion force. At the same time, the "continuous radial movement" ensures that the deformation of the sidewall of the tube 800 meets the design requirements, ensuring a firm connection with the sealing member groove and improving the consistency and reliability of the crimping connection.

[0077] The structure of the first drive groove 520 and the second drive groove 530 further enhances their timing coordination. When the clamping block 300 enters the stationary section 522 of the concentric arc and maintains stable clamping, the extrusion blade 400 starts to continuously extrude along the second drive groove 530 with a gradually changing radius. The stability of clamping and the continuity of extrusion form a precise match, avoiding timing misalignment caused by small clamping displacement or fluctuations in extrusion force. This ensures the smoothness and accuracy of the entire crimping process (clamping-holding-extrusion), and is especially suitable for the combination of pipe 800 and sealing component in scenarios where high crimping accuracy is required.

[0078] Based on the above embodiments, the drive mechanism 200 includes a power component 210, a rack 220 driven by the power component 210, and a gear 230 meshing with the rack 220. The gear 230 is coaxially connected to the turntable 510 to drive its rotation. For example, the power component 210 can be a motor, a linear motor, or a hydraulic cylinder. The meshing transmission between the rack 220 and the gear 230 is a surface contact rigid connection. Compared with flexible transmission methods such as belt drive (prone to slippage) and chain drive (prone to wear and tooth skipping), this can minimize power loss during transmission and ensure that the torque output by the power component 210 can be efficiently transmitted to the gear 230, thereby driving the turntable 510 to achieve stable rotation. This efficient power transmission characteristic can avoid the rotational speed fluctuation of the turntable 510 caused by power loss, providing a stable power foundation for the precise radial movement of the clamping block 300 and the pressing knife 400, and ensuring the consistency of the clamping action.

[0079] Furthermore, since the transmission mechanism 500 in the above embodiment mainly uses a turntable 510 for force transmission, radial offset of the turntable 510 will directly cause the actual positions of the first drive groove 520 and the second drive groove 530 to deviate from their designed trajectories, resulting in jamming, excessive local wear, and even causing the clamping block 300 to fail to clamp properly and the extrusion blade 400 to deviate from its extrusion position. Therefore, the transmission mechanism 500 also includes at least three positioning wheels 540, each of which is mounted on the base 100 and abuts against the outer periphery of the turntable 510 to limit the radial offset of the turntable 510. The at least three positioning wheels 540 abut evenly along the outer periphery of the turntable 510, which can form a stable radial constraint on the turntable 510 from multiple directions, completely limiting the radial displacement or eccentric oscillation of the turntable 510 during rotation due to forces (such as the reaction force of the drive groove and the connecting piece, and the feedback force of the clamping and extrusion actions). Compared to the single-point constraint relying solely on the coaxial connection between gear 230 and turntable 510, the "circumferential encircling" positioning of the multi-positioning wheel 540 ensures that the turntable 510 always rotates around the fixed axis of the placement hole 110. This prevents changes in the relative positions of the first drive groove 520, the second drive groove 530, the clamping block 300, and the extrusion knife 400 due to the offset of the turntable 510. It eliminates problems such as jamming of the drive groove and connecting parts and offset of the transmission path from the root, ensuring the accuracy of the radial movement of the clamping block 300 and the extrusion knife 400.

[0080] Since both the clamping block 300 and the extrusion blade 400 need to move radially, the connecting piece and the drive groove can only provide them with the power to move, but cannot restrict their direction of movement. The direction of movement of the clamping block 300 and the extrusion blade 400 needs to be limited by the machine base 100. Specifically, the machine base 100 has a clamping groove 120 for sliding the clamping block 300 and a blade groove 130 for sliding the extrusion blade 400, both centered on the center of the placement hole 110. Both the clamping groove 120 and the blade groove 130 are arranged radially with the center of the placement hole 110 as the center. This structure mechanically forces the clamping block 300 to slide only along a radial trajectory "away from / closer to the center of the placement hole 110", and the extrusion blade 400 is similarly constrained. Compared to designs without guide grooves that rely solely on the transmission mechanism 500 to indirectly control the direction of movement, the above structure completely eliminates circumferential offset of the clamping block 300 due to uneven force (such as irregularity of the outer circumference of the pipe 800), or oblique offset of the extrusion blade 400 due to the extrusion reaction force. This ensures that the clamping block 300 always precisely surrounds the center of the pipe 800, and the extrusion blade 400 always precisely acts on the preset extrusion position on the side wall of the pipe 800. This fundamentally avoids problems such as clamping failure and extrusion position misalignment caused by deviations in the movement trajectory, ensuring the accuracy of the crimping action. All clamping grooves 120 and blade grooves 130 use the center of the placement hole 110 as a common radial reference, meaning that the sliding trajectories of all clamping blocks 300 and all extrusion blades 400 point to the same center. This unified benchmark design ensures that when multiple clamping blocks 300 move towards the center simultaneously, they can precisely enclose and form an annular clamping structure that matches the outer periphery of the pipe 800, avoiding uneven clamping force and pipe 800 eccentricity caused by deviations in the trajectory of individual clamping blocks 300. At the same time, it ensures that when multiple extrusion blades 400 move radially simultaneously, they can apply uniform extrusion force to the sidewall of the pipe 800, avoiding excessive or insufficient deformation of the pipe 800 due to asynchronous trajectories of the extrusion blades 400, further improving the consistency of crimping quality.

[0081] Furthermore, the extension path of the sipe 130 intersects with the extension path of the clamping groove 120, and the extrusion blade 400 passes through the area of ​​the clamping groove 120 and contacts the wall of the pipe 800. This intersecting design of the sipe 130 and clamping groove 120 eliminates the need for the clamping block 300 and the extrusion blade 400 to be axially offset; they can be positioned in the same axial plane. The clamping block 300 moves radially along the clamping groove 120 within this plane, providing stable radial clamping to the pipe 800. Similarly, the extrusion blade 400 moves radially along the sipe 130 within this plane and passes through the area of ​​the clamping groove 120, acting on the wall of the pipe 800. This layout completely eliminates the axial offset problem caused by "non-intersecting paths," ensuring that the clamping reference and the extrusion reference are completely coincident. This avoids localized force imbalance in the pipe 800 due to axial misalignment, or the extrusion position deviating from the axial range of the sealing groove, thus guaranteeing the accuracy of the crimping action from a reference level.

[0082] Furthermore, the clamping block 300 or the joint of adjacent clamping blocks 300 is provided with an opening 320 for the extrusion knife 400 to pass through, such as... Figure 5 As shown, in this embodiment, an opening 320 is made adjacent to the clamping block 300 to allow the extrusion blade 400 to pass through. The opening 320 design provides a precise and dedicated passage for the extrusion blade 400, allowing it to smoothly pass through the clamping block 300 area when moving radially along the blade groove 130, completely avoiding physical interference with the clamping block 300 and ensuring the continuous execution of the "clamping-extrusion" action. The positions of the openings 320 are all preset and associated with the clamping positions of the clamping block 300. When the clamping block 300 moves to the preset position for clamping the tube 800, the opening 320 is precisely aligned with the blade groove 130 and the area of ​​the tube 800 that needs to be extruded, ensuring that the extrusion blade 400 can directly act on the target position when passing through the opening 320.

[0083] Based on the above embodiments, a lifting mechanism 600 located at the bottom of the placement hole 110 is also included. The lifting mechanism 600 includes a liftable lifting block 610 and a vertical lifting drive component 620 for driving the lifting block 610. After the pipe 800 is assembled with the sealing component, the side wall position of the pipe 800 to be compressed must strictly correspond to the groove of the sealing component and must be aligned with the initial compression height of the compression blade 400. If a fixed placement method is adopted, when there is a difference between the length of the pipe 800 and the assembly depth of the sealing component, the problem of "misalignment between the area to be compressed and the height of the compression blade 400" is likely to occur. For example, the compression blade 400 may only act on the area of ​​the pipe 800 that is not corresponding to the groove, causing the pipe 800 to deform and fail to fit into the groove, or failing to compress to the critical position, resulting in an unstable connection. The lifting mechanism 600 can adjust the height of the lifting block 610 through the vertical lifting drive component 620, driving the pipe 800 and the sealing component to rise and fall synchronously until the side wall of the pipe 800 to be squeezed is precisely aligned with the working trajectory of the extrusion knife 400. This ensures that the extrusion knife 400 can directly act on the area of ​​the pipe 800 corresponding to the groove of the sealing component, ensuring the accuracy of the crimping action from the height dimension and avoiding crimping failure caused by height misalignment.

[0084] In the traditional fixed placement method, operators need to precisely place the pipe 800 into the placement hole 110 and manually calibrate the height to ensure that the area to be crimped is aligned with the crimping blade 400. This operation is cumbersome and time-consuming, especially in mass production where manual calibration deviations can easily affect efficiency. The lifting mechanism 600 can first lower the lifting block 610 to a lower position, allowing operators to directly place the pipe 800 with the sealing element into the placement hole 110 (without requiring precise height alignment). Then, the vertical lifting drive 620 automatically adjusts the height of the lifting block 610 to complete the alignment, simplifying the clamping steps, reducing the skill requirements for operators, shortening the single clamping time, and improving mass production efficiency. After crimping, the pipe 800 can be pushed out of the placement hole 110 by raising the lifting block 610, avoiding difficulties in removal caused by the pipe 800 being tightly fitted to the placement hole 110 (or slightly deformed and stuck after crimping), reducing the intensity and time of manual material handling. Meanwhile, if the pipe 800 gets stuck or deforms abnormally during the crimping process, the workpiece can be quickly removed by adjusting the height of the lifting block 610 (e.g., raising it to allow the pipe 800 to be freed from the constraint of the clamping block 300), which facilitates troubleshooting and handling and reduces equipment downtime.

[0085] In this embodiment, the base 100 is equipped with a sensor 700 for sensing whether there is a pipe 800 in the placement hole 110. The sensor 700 can be an existing device, such as a photoelectric sensor, a proximity sensor, or a mechanical sensor. The sensor 700 can be linked with the control system of the device (such as a PLC) to form an automated logic closed loop of "workpiece detection - signal feedback - start permission". When the sensor 700 detects that the pipe 800 is placed in the placement hole 110, it automatically sends a "ready" signal to the control system, and the control system then responds to the start command of the drive mechanism 200; if the pipe 800 is not detected, the control system directly blocks the start command. This linkage design eliminates the need for manual intervention, further improving the automation level of the device. It can be seamlessly integrated into the production line scenario (such as coordinating with the preceding pipe 800 conveying mechanism and the subsequent finished product gripping mechanism) to achieve fully unmanned operation.

[0086] In use, the tube 800 with the sealing component inserted is placed into the placement hole 110. The drive mechanism 200 is activated, and the drive component drives the rack 220 to move. The rack 220 drives the gear 230 to rotate, and the gear 230 drives the turntable 510 of the transmission component to rotate. The turntable 510 rotates clockwise, causing relative movement between the first drive groove 520 and the first connecting member 310, and between the second drive groove 530 and the second connecting member 410. This drives all clamping blocks 300 and all extrusion blades 400 to move radially towards the center. The clamping blocks 300 will first contact the tube. The material 800 is clamped together with the pipe 800. After clamping the pipe 800, the first connecting piece 310 will enter the stationary section 522 of the first drive groove 520. At this time, the turntable 510 continues to rotate, and the distance from the first connecting piece 310 to the center of the turntable 510 will not change. The clamping block 300 is in a clamped state. However, as the turntable 510 continues to rotate, the extrusion blade 400 will pass through the opening 320 of the clamping block 300 and contact the pipe wall of the pipe 800. Then, it will extrude the pipe wall and insert it into the groove of the sealing member, thus achieving the connection between the pipe 800 and the sealing member. Then, the above steps are reversed to remove the pipe 800 connected to the sealing member. By employing the angular correspondence design of the first drive groove 520 and the second drive groove 530 of the turntable 510 in the transmission mechanism 500, combined with the positioning wheel 540 ensuring the coaxiality of the turntable 510, an orderly action is achieved: "clamping block 300 first moves radially to clamp pipe 800 → maintains a stable clamping state → extrusion blade 400 simultaneously and continuously extrudes radially." Compared to solutions relying on multiple power sources or electronic control, the inherent timing correlation of the mechanical structure avoids chaotic actions, ensuring that pipe 800 is fully clamped before being extruded, preventing deviation or uneven extrusion due to insecure clamping, or damage to pipe 800 due to premature extrusion, ensuring precise deformation of the sidewall of pipe 800 and its insertion into the sealing groove, achieving high-quality mechanical interlocking. The same turntable 510 drives all clamping blocks 300 and extrusion blades 400 to move radially in sync. Together with the radial clamping grooves 120 and blade grooves 130 on the base 100 centered on the placement hole 110, it ensures that all clamping blocks 300 uniformly surround the tube 800 and all extrusion blades 400 apply force synchronously. This avoids the tube 800 from being eccentric or deforming asymmetrically due to the lag or offset of individual components, further improving the consistency of crimping quality and making it suitable for mass standardized production.

[0087] The above description is only a specific embodiment of the present utility model, but the technical features of the present utility model are not limited thereto. Any changes or modifications made by those skilled in the art within the scope of the present utility model are covered by the patent scope of the present utility model.

Claims

1. An automatic pipe clamping device, used to clamp the pipe sidewall into a groove of an end-sealing member by pressing it, characterized in that, include: A base, wherein the base has a placement hole for placing a pipe with a sealing component; The drive mechanism is mounted on the base; At least two clamping blocks are provided on the base and can move radially along the placement hole, and all clamping blocks together enclose the tube located at the center; At least one extrusion blade, disposed on the base and movable radially along the placement hole, is used to extrude the sidewall of the clamped pipe. A transmission mechanism is connected between the drive mechanism, the clamping block, and the extrusion blade; The transmission mechanism is configured to: synchronously drive all the clamping blocks and the extrusion blade to perform radial movement in response to the drive mechanism, and control the movement of the clamping blocks and the extrusion blade to have a predetermined phase difference.

2. The automatic pipe crimping device according to claim 1, characterized in that, The transmission mechanism includes a turntable coaxially arranged with the placement hole, and the turntable is provided with a first drive groove corresponding to each of the clamping blocks and a second drive groove corresponding to each of the extrusion blades; Each of the clamping blocks engages with the corresponding first drive slot via a first connector; Each of the extrusion blades is engaged with the corresponding second drive groove via a second connector; The first drive groove includes a driving section and a stationary section that are connected. The profile of the first drive groove is configured such that the driving section drives the clamping block to move radially to the position of clamping the pipe, and the stationary section keeps the clamping block in a clamped state. The profile of the second drive groove is configured to drive the extrusion blade to move continuously radially; The stationary section of the first drive groove and the section of the second drive groove where the extrusion blade performs the extrusion correspond in the rotation angle of the turntable.

3. The automatic pipe crimping device according to claim 2, characterized in that, The stationary section of the first drive groove is an arc groove centered on the center of the turntable; The radial distance from the center of the turntable gradually decreases from the end of the drive section of the first drive groove that is far from the stationary section to the end that is close to the stationary section. Along the rotational direction in which the extrusion blade is driven by the turntable to extrude, the radius of the second drive groove from the center of the turntable gradually decreases.

4. The automatic pipe crimping device according to claim 2, characterized in that, The driving mechanism includes a power component, a rack driven by the power component, and a gear meshing with the rack. The gear is coaxially connected to the turntable to drive its rotation.

5. The automatic pipe crimping device according to claim 2, characterized in that, The transmission mechanism also includes at least three positioning wheels, each of which is mounted on the base and abuts against the outer periphery of the turntable to limit the radial offset of the turntable.

6. The automatic pipe crimping device according to claim 1, characterized in that, The base is radially provided with a clamping groove for sliding the clamping block and a cutting groove for sliding the extrusion knife, centered on the center of the placement hole.

7. The automatic pipe crimping device according to claim 6, characterized in that, The extension path of the blade groove intersects with the extension path of the clamping groove, and the extrusion blade passes through the clamping groove area and contacts the pipe wall.

8. The automatic pipe crimping device according to claim 7, characterized in that, The clamping block or the joint of adjacent clamping blocks is provided with an opening for the extrusion knife to pass through.

9. The automatic pipe crimping device according to claim 1, characterized in that, It also includes a lifting mechanism located at the bottom of the placement hole, the lifting mechanism comprising a liftable lifting block and a vertical lifting drive for driving the lifting block.

10. The automatic pipe crimping device according to claim 1, characterized in that, The base is equipped with a sensor for detecting whether there is a pipe inside the placement hole.

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