Anti-deviation screw slide table stepping motor driving hot air flow rheological thermal contact device

Abstract

The utility model relates to hot connection device technical field, concretely is a kind of anti-deviation screw slide platform step motor drive hot air flow variable hot connection device, the utility model drives gear transmission by servo motor, drives internal turntable rotation, utilizes the cooperation of specially designed arc-shaped poking groove and poking rod on its surface, converts the circular motion into the synchronous radial linear motion of six groups of connecting rods.This mechanical linkage structure ensures that all anti-deviation blocks can realize complete synchronization centripetal or centrifugal diffusion with linkage disc center as reference.In clamping process, the arc spring connected with anti-deviation block generates continuous elastic force, so that anti-deviation block forms self-adapting clamping ring, can automatically compensate the slight deviation of sheath outer diameter, evenly distributes clamping force.This multi-point multi-direction synchronous clamping mechanism fundamentally eliminates any displacement that sheath can occur in radial direction, establishes stable positioning reference for subsequent welding procedure, effectively guarantees the coaxiality requirement of welding process, significantly improves the dimensional accuracy and shape consistency of product.

Description

Technical Field

[0001] This utility model relates to the technical field of heat-sealing devices, specifically a hot air rheological heat-sealing device driven by a lead screw slide stepper motor to prevent deviation. Background Technology

[0002] In the processing and joining of thermoplastic materials such as plastics, composite materials, and waterproof membranes, hot air bonding is a common and effective process. The joining technology of thermoplastic materials and their composite materials is a key link in modern manufacturing and is widely used in many fields such as automobiles, home appliances, packaging, and medical devices.

[0003] Several core defects affecting welding quality and stability are prevalent in existing hot air welding equipment for sheath tubes. Firstly, traditional clamping and positioning mechanisms often employ simple mechanical clamps for fixation from one side or a limited number of points. This clamping method struggles to achieve uniform circumferential force distribution, easily leading to localized stress concentration on the sheath tube surface, causing micro-deformation of the thin-walled tube during the clamping stage. More significantly, such rigid clamping structures lack the ability to compensate for tube diameter tolerances. When dealing with batches of workpieces with fluctuating dimensions, either the clamping is too loose, causing axial movement or radial runout during subsequent transport and rotation, or the clamping is too tight, exacerbating the risk of deformation. This unstable positioning directly undermines the precise reference points required for welding. Secondly, during the welding process, existing equipment often separates clamping from motion functions. When the sheath is fed into the high-temperature welding zone and rotates at high speed, the tube is prone to slight but fatal vibrations and displacements due to the combined effects of hot air impact, equipment vibration, and material softening caused by heat. Traditional fixed clamps cannot dynamically correct and buffer these vibrations, which ultimately leads to uneven distribution of hot air energy in the circumferential direction of the weld, resulting in defects such as local overmelting or poor fusion, which seriously restricts the sealing strength and long-term reliability of the product.

[0004] In view of this, we propose a hot air rheological heat-connecting device driven by a lead screw slide stepper motor to prevent deviation. Summary of the Invention

[0005] The purpose of this invention is to provide a lead screw slide stepper motor driven hot air rheological heat welding device to prevent offset. This anti-offset lead screw slide stepper motor driven hot air rheological heat welding device solves the problem of uneven clamping and poor dynamic stability in the prior art, which leads to easy offset and deformation during sheath welding and affects the weld quality.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A lead screw slide stepper motor driven hot air rheological welding device with anti-deviation features includes a body and a mounting frame. A control board is mounted on top of the body. A lead screw slide module is fixedly mounted on the mounting frame, and a rotary cylinder chuck is mounted on the lead screw slide module. A hot air blower is fixedly connected to the inner side of the mounting frame. The device also includes an anti-deviation component to ensure that the sheath does not deviate during hot air welding. The anti-deviation component includes a bracket, which is bolted to the mounting frame. Bridges are bolted to both ends of the bracket. A linkage plate is fixedly connected to the end of the bridge away from the bracket. A limit plate is fixedly connected to the inner side of the linkage plate. A groove is formed on the surface of the limit plate, and a connecting rod is inserted into and slidably connected to the inner side of the groove. An anti-deviation block is inserted into and hinged to the end of the connecting rod near the center of the linkage plate.

[0007] Preferably, the number of connecting rods is six sets, and the six sets of connecting rods are arranged in a circular array with the center line of the linkage disk as the axis.

[0008] Preferably, the internal rotating part of the linkage disk is connected to a turntable, the surface of the turntable is provided with a toggle groove, the bottom of the connecting rod is fixedly connected to a lever, the lever is inserted into the toggle groove, and the toggle groove is arc-shaped.

[0009] Preferably, an arc-shaped rod is inserted between the anti-deviation block and the two adjacent sets of anti-deviation blocks, and an arc-shaped spring is sleeved on the outside of the arc-shaped rod, with both ends of the arc-shaped spring being fixedly connected to the anti-deviation block respectively.

[0010] Preferably, a driven gear is fixedly connected to the bottom surface of the turntable, and a reduction gear is rotatably connected to the inner side of the bridge frame, the reduction gear meshing with the driven gear.

[0011] Preferably, a servo motor is fixedly connected to the top surface of the cable tray, and the output shaft of the servo motor passes through the cable tray and is fixedly connected to a reduction gear.

[0012] Preferably, the number of linkage plates is two sets, and the two sets of linkage plates are symmetrically arranged with the center line of the hot air blower as the axis of symmetry.

[0013] By employing the above technical solution, this utility model provides a hot air rheological heat-sealing device driven by a lead screw slide stepper motor to prevent deviation. It possesses at least the following beneficial effects: 1. This utility model uses a servo motor to drive gear transmission, which rotates the internal turntable. Utilizing the specially designed arc-shaped actuating groove on its surface and the interaction with the lever, the circular motion is converted into synchronous radial linear motion of six sets of connecting rods. This mechanical linkage structure ensures that all anti-deviation blocks can achieve completely synchronous centripetal convergence or centrifugal diffusion with the center of the linkage disc as the reference. During clamping, the arc-shaped spring connecting the anti-deviation blocks generates continuous elastic force, causing the anti-deviation blocks to form an adaptive clamping ring, which can automatically compensate for minor deviations in the outer diameter of the sheath and evenly distribute the clamping force. This multi-point, multi-directional synchronous clamping mechanism fundamentally eliminates any possible radial displacement of the sheath, establishing a stable positioning reference for subsequent welding processes, effectively ensuring the coaxiality requirements of the welding process, and significantly improving the dimensional accuracy and shape consistency of the product.

[0014] 2. This invention achieves stable clamping throughout the entire process through the coordinated operation of the anti-deviation components and the motion system. When the lead screw slide module conveys the sheath through the hot air zone, the rotating cylinder chuck drives the sheath to feed axially and rotate at a uniform speed. At this time, the anti-deviation components symmetrically arranged on both sides maintain elastic constraint on the tube. This continuous and stable clamping state effectively suppresses tube vibration or deviation that may be caused by equipment vibration, material thermal deformation, or motion inertia. The buffering characteristics of the arc spring further absorb the instantaneous impact during system operation, ensuring that the sheath maintains a precise movement trajectory under the action of hot air. This dynamic stability allows the hot air energy to be applied evenly to the welding area, completely avoiding defects such as uneven welding and incomplete sealing caused by tube deviation, and significantly improving the reliability of the welded joint and the product qualification rate. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the anti-deviation component in this utility model; Figure 3 This is a schematic diagram of the unfolded structure of the limiting disk in this utility model; Figure 4 This is a schematic diagram of the enlarged structure of the anti-deviation block in this utility model; Figure 5 This is a schematic diagram of the cross-sectional structure of the linkage plate and the cable tray in this utility model.

[0016] In the diagram: 1. Machine body; 2. Anti-deviation component; 3. Mounting frame; 4. Control board; 5. Screw slide module; 6. Hot air blower; 7. Rotary cylinder chuck; 21. Bracket; 22. Cable tray; 23. Linkage plate; 24. Servo motor; 25. Limit plate; 26. Slide groove; 27. Turntable; 28. Actuating groove; 29. ​​Connecting rod; 210. Actuating lever; 211. Anti-deviation block; 212. Arc rod; 213. Arc spring; 214. Driven gear; 215. Reduction gear. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] A type of anti-deviation lead screw slide stepper motor driven hot air rheological heat sealing device, such as... Figure 1 - Figure 5As shown, the system includes a body 1 and a mounting frame 3. A control panel 4 is mounted on top of the body 1. A lead screw slide module 5 is fixedly mounted on the mounting frame 3, and a rotary cylinder chuck 7 is mounted on the lead screw slide module 5. A hot air blower 6 is fixedly connected to the inner side of the mounting frame 3. The system also includes an anti-deviation component 2, used to ensure that the sheath tube does not shift during hot air welding. The anti-deviation component 2 includes a bracket 21, which is bolted to the mounting frame 3. Both ends of the bracket 21 are bolted to a bridge frame 22. A linkage plate 23 is fixedly connected to the end of the bridge frame 22 away from the bracket 21. A limit plate 25 is fixedly connected to the inner side of the linkage plate 23. A groove 26 is formed on the surface of the limit plate 25. A connecting rod 29 is inserted into and slidably connected to the inner side of the groove 26. An anti-deviation block 211 is inserted into and hinged to the end of the connecting rod 29 near the center of the linkage plate 23. There are six sets of connecting rods 29, arranged in a circular array around the center line of the linkage plate 23. The internal rotating part of the linkage disk 23 is connected to a turntable 27. The surface of the turntable 27 has a swivel groove 28. A lever 210 is fixedly connected to the bottom of the connecting rod 29 and inserts into the swivel groove 28, which is arc-shaped. When hot air welding of the sheath tube is required, the operator first places the sheath tube workpiece on the center position between two sets of linkage disks 23 precisely symmetrically arranged with the centerline of the hot air blower 6 as the axis of symmetry. Then, the servo motor 24 of the anti-deviation component 2 is started. The output shaft of the servo motor 24 directly drives the reduction gear 215 to rotate. The reduction gear 215 meshes with the driven gear 214 fixed to the bottom of the turntable 27, transmitting power and driving the turntable 27 to rotate inside the linkage disk 23. The arc-shaped swivel groove 28 on the surface of the turntable 27 then rotates in a circular motion. Since the six sets of circumferentially arranged levers 210 are inserted into these swivel grooves 28, the arc-shaped contour of the swivel groove 28 will exert a forced force on the levers 210. The guiding action forces all levers 210 to slide synchronously and precisely along the radial grooves 26 on the limiting disc 25. The connecting rods 29, which are fixedly connected to the levers 210, are thus pushed, causing the anti-deviation blocks 211, which are connected to their ends by hinges, to move together toward the central axis of the linkage disc 23. The six sets of anti-deviation blocks 211 then evenly surround and contact the outer wall of the sheath from all sides. During this gathering process, the arc springs 213 connecting adjacent anti-deviation blocks 211 are compressed or stretched, generating a continuous elastic restoring force. This force is transmitted through the arc rod 212, so that each anti-deviation block 211 can flexibly and tightly fit against the surface of the sheath, forming an elastic clamping ring with self-adaptive capabilities.

[0019] An arc-shaped rod 212 is inserted between the anti-deviation block 211 and two adjacent anti-deviation blocks 211. An arc-shaped spring 213 is sleeved on the outside of the arc-shaped rod 212, and both ends of the arc-shaped spring 213 are fixedly connected to the anti-deviation block 211. A driven gear 214 is fixedly connected to the bottom surface of the turntable 27, and a reduction gear 215 is rotatably connected to the inner side of the bridge frame 22. The reduction gear 215 meshes with the driven gear 214. A servo motor 24 is fixedly connected to the top surface of the bridge frame 22. The output shaft of the servo motor 24 passes through the bridge frame 22 and is fixedly connected to the reduction gear 215. There are two sets of linkage plates 23, and the two sets of linkage plates 23 are symmetrically arranged with the center line of the hot air blower 6 as the axis of symmetry. After the sheath is firmly clamped and centered, the control system activates the lead screw slide module 5. The lead screw slide module 5 drives the rotary cylinder chuck 7 on it to move precisely to the end of the sheath and clamp it. Then, the sheath is smoothly transported to the designated welding area of ​​the hot air blower 6. At the same time, the rotary cylinder chuck 7 can drive the sheath to rotate at a uniform speed according to the preset program. The hot air blower 6 sprays high-temperature airflow at the part of the sheath to be welded, so that the material melts and the welding is completed. Since the sheath is always under the stable constraint of the anti-deviation component 2 during the entire process of being transported and rotated, its axis of rotation and motion trajectory remain highly consistent, thereby ensuring the uniformity, sealing and overall processing quality and accuracy of hot air welding.

[0020] When using the anti-deviation screw slide stepper motor driven hot air rheological welding device of this utility model, when hot air welding of sheath tubes is required, the operator first places the sheath tube workpiece on the center position between two sets of linkage disks 23 that are precisely symmetrically set with the center line of the hot air machine 6 as the axis of symmetry. Then, the servo motor 24 of the anti-deviation component 2 is started. The output shaft of the servo motor 24 directly drives the reduction gear 215 to rotate. The reduction gear 215 meshes with the driven gear 214 fixed at the bottom of the turntable 27, transmitting power and driving the turntable 27 to rotate inside the linkage disk 23. The arc-shaped actuation groove 28 on the surface of the turntable 27 moves in a circular motion. Since the six sets of circumferentially arrayed levers 210 are inserted into these grooves 28, the arc-shaped contour of the grooves 28 exerts a forced guiding effect on the levers 210, compelling all levers 210 to slide synchronously and precisely along the radial sliding groove 26 on the limiting plate 25. The connecting rod 29, fixedly connected to the levers 210, is thus pushed, causing the anti-deviation blocks 211, whose ends are hinged, to converge and move towards the central axis of the linkage plate 23. The six sets of anti-deviation blocks 211 move from... The sheath is evenly surrounded and contacts the outer wall of the sheath from all sides. During this convergence process, the arc-shaped springs 213 connecting adjacent anti-deviation blocks 211 are compressed or stretched, generating a continuous elastic restoring force. This force is transmitted through the arc-shaped rod 212, allowing each anti-deviation block 211 to flexibly and tightly fit against the surface of the sheath, forming an elastic clamping ring with self-adaptive capabilities. This effectively absorbs any possible minor vibrations or dimensional deviations, thus fundamentally ensuring that the sheath will not experience any radial displacement during subsequent processing. After the sheath is firmly clamped and centered, the control system activates the lead screw slide module 5. The lever slide module 5 drives the rotary cylinder chuck 7 on it to move precisely to the end of the sheath and clamp it. Then, the sheath is smoothly transported to the designated welding area of ​​the hot air blower 6. At the same time, the rotary cylinder chuck 7 can drive the sheath to rotate at a constant speed according to a preset program. The hot air blower 6 sprays high-temperature airflow at the part of the sheath to be welded, so that the material melts and the welding is completed. Since the sheath is always under the stable constraint of the anti-deviation component 2 during the entire process of being transported and rotated, its axis of rotation is highly consistent with the movement trajectory, thereby ensuring the uniformity, sealing, and overall processing quality and precision of the hot air welding.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lead screw slide stepper motor driven hot air rheological heat-sealing device for preventing deviation, comprising a body (1) and a mounting frame (3), characterized in that: A control panel (4) is provided on the top of the body (1), a screw slide module (5) is fixedly installed on the mounting frame (3), a rotary cylinder chuck (7) is installed on the screw slide module (5), and a hot air blower (6) is fixedly connected to the inner side of the mounting frame (3). It also includes an anti-displacement component (2) to ensure that the sheath does not shift when the sheath is hot-air welded; The anti-deviation component (2) includes a bracket (21), which is fixedly mounted on the mounting frame (3) by bolts. Both ends of the bracket (21) are fixedly connected to a cable tray (22) by bolts. A linkage plate (23) is fixedly connected to one end of the cable tray (22) away from the bracket (21). A limit plate (25) is fixedly connected to the inner side of the linkage plate (23). A groove (26) is provided on the surface of the limit plate (25). A connecting rod (29) is inserted into and slidably connected to the inner side of the groove (26). An anti-deviation block (211) is inserted into and hinged to one end of the connecting rod (29) near the center of the linkage plate (23).

2. The anti-deviation lead screw slide stepper motor driven hot air rheological heat-sealing device according to claim 1, characterized in that: The number of connecting rods (29) is six, and the six sets of connecting rods (29) are arranged in a circular array with the center line of the linkage disk (23) as the axis.

3. The anti-deviation lead screw slide stepper motor driven hot air rheological heat-sealing device according to claim 1, characterized in that: The internal rotating connection of the linkage disk (23) is connected to a turntable (27), and the surface of the turntable (27) is provided with a toggle groove (28). The bottom of the connecting rod (29) is fixedly connected to a lever (210), and the lever (210) is inserted into the toggle groove (28). The toggle groove (28) is arc-shaped.

4. The anti-deviation lead screw slide stepper motor driven hot air rheological heat-sealing device according to claim 1, characterized in that: An arc-shaped rod (212) is inserted between the anti-deviation block (211) and the two adjacent anti-deviation blocks (211). An arc-shaped spring (213) is sleeved on the outside of the arc-shaped rod (212), and the two ends of the arc-shaped spring (213) are fixedly connected to the anti-deviation block (211) respectively.

5. The anti-deviation lead screw slide stepper motor driven hot air rheological heat-sealing device according to claim 3, characterized in that: The bottom surface of the turntable (27) is fixedly connected to a driven gear (214), and the inner side of the bridge frame (22) is rotatably connected to a reduction gear (215), which meshes with the driven gear (214).

6. The anti-deviation lead screw slide stepper motor driven hot air rheological heat-sealing device according to claim 5, characterized in that: A servo motor (24) is fixedly connected to the top surface of the bridge (22). The output shaft of the servo motor (24) passes through the bridge (22) and is fixedly connected to the reduction gear (215).

7. The anti-deviation lead screw slide stepper motor driven hot air rheological heat-sealing device according to claim 1, characterized in that: The number of linkage plates (23) is two sets, and the two sets of linkage plates (23) are symmetrically arranged with the center line of the hot air blower (6) as the axis of symmetry.

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