A scratch-free plane glass toughening conveying device based on self-lubricating raceway

Abstract

The present application relates to the technical field of glass conveying, and discloses a flat glass scratch-free tempering conveying device based on a self-lubricating raceway, which comprises a rack, a mounting seat arranged in the rack, and a plurality of groups of mounting seats arranged in an array along the center of the rack, each group of mounting seats being arranged in a symmetrical manner along the center of the rack, each mounting seat in the same group being rotationally mounted with a conveying roller, and the conveying roller being provided with a journal on both sides. The flat glass scratch-free tempering conveying device based on the self-lubricating raceway can effectively solve the problem in the prior art that the lubrication and maintenance of the journal are usually manually performed by periodically adding lubricating oil or using an automatic oil pump with a fixed frequency to supply oil, the manual oil injection depends on the maintenance cycle, and individual lubrication points are prone to being missed, or the oil injection is prone to being excessive or insufficient, when a conveying roller needs to be urgently lubricated due to abnormal wear, local shutdown or waiting for a unified maintenance window is often required, and the continuous operation efficiency of the production line is affected.

Description

Technical Field

[0001] This invention relates to the field of glass conveying technology, and more specifically to a scratch-free tempered glass conveying device based on a self-lubricating raceway. Background Technology

[0002] Laminated glass, a composite glass product with excellent safety performance, is made of two or more pieces of glass bonded together with an interlayer film under high temperature and pressure. It is widely used in building curtain walls, automobile windshields and other fields. In the production process of laminated glass, tempering is one of the key processes, which requires the glass to be fed into the tempering furnace at a uniform speed and stably through a conveying device.

[0003] In the prior art, in order to meet the high-precision conveying requirements of untempered laminated glass, glass conveying devices often adopt a roller conveyor structure with multiple sets of independently driven conveying rollers. Each conveying roller is controlled by an independent drive unit, thereby ensuring that the untempered laminated glass maintains a horizontal linear motion trajectory and surface flatness during the conveying process.

[0004] Conveyor rollers are generally mounted on bearing seats or mounting bases on the frame via journals, forming a sliding friction pair. For the lubrication and maintenance of the journals, the conventional operation is to manually add lubricating oil periodically or to use an automatic oil pump to supply oil at a fixed frequency. Manual oiling depends on the maintenance cycle and is prone to omission of individual lubrication points, over-lubrication or under-lubrication. When a conveyor roller has abnormal wear and needs emergency lubrication, it is often necessary to stop the machine locally or wait for a unified maintenance window, which affects the continuous operation efficiency of the production line. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides a scratch-free tempered glass conveying device based on a self-lubricating raceway. This device effectively solves the problems in existing technologies where lubrication maintenance of the journals typically involves manual periodic lubrication or the use of an automatic oil pump at a fixed frequency. Manual lubrication relies on maintenance cycles and is prone to issues such as missed lubrication points, over-lubrication, or under-lubrication. Furthermore, when an abnormal wear occurs on a conveyor roller requiring emergency lubrication, partial shutdown or waiting for a unified maintenance window is often necessary, affecting the continuous operation efficiency of the production line.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: This invention provides a scratch-free tempering conveyor for planar glass based on a self-lubricating raceway, comprising: frame; The mounting base is located within the frame, and multiple sets of the mounting base are arranged in an array along the center of the frame. Each set of the mounting base has two mounting bases symmetrically distributed along the center of the frame. A conveying roller is rotatably mounted in the mounting base of the same set. Both sides of the conveying roller are provided with journals, and oil passages are provided in the journals. A lubrication unit is provided within the frame. The lubrication unit includes a switching component and an oil supply component. When the conveying roller rotates in the reverse direction, the switching component is activated and drives the oil supply component to rotate synchronously, so that the lubricating oil in the oil supply component is delivered to the journal through the oil passage to achieve lubrication.

[0007] Furthermore, the switching component includes a fastening ring fixedly connected to the outer surface of the journal, and the fastening ring is rotatably connected to a pawl via an elastic element disposed on its outer surface.

[0008] Furthermore, the oil passage includes interconnected horizontal oil holes and vertical oil holes. The vertical oil holes are tapered and are arranged in a circular array along the center of the horizontal oil holes.

[0009] Furthermore, the oil supply component includes a support frame fixedly connected within the frame, and the support frame is rotatably connected to an annular block via a guide groove disposed therein. The annular block is fixedly connected to a ratchet that fits against the outer side of the pawl via a connecting frame disposed on its outer surface.

[0010] Furthermore, an oil box for holding lubricating oil is fixedly connected inside the annular block, and multiple oil boxes are arranged in a circumferential array along the center of the annular block. An oil pipe connected to a horizontal oil hole is fixedly connected to the outer surface of the oil box.

[0011] Furthermore, the outer surface of the conveying roller is provided with a movable groove, and multiple sets of the movable groove are arranged in a circumferential array along the center of the conveying roller. The movable groove is rotatably connected to an abutment block by an elastic element disposed inside it, and the abutment block is designed in an arc shape.

[0012] Furthermore, the mounting bases in the same group are rotatably connected to brackets via annular grooves on their adjacent surfaces, and multiple brackets are provided and arranged in a circumferential array along the center of the mounting base. Each group of brackets has two brackets and is symmetrically distributed along the center of the conveyor roller. The brackets in the same group are slidably connected to an expansion plate via an elastic element provided inside, and a fixing plate that fits against the arc surface of the abutment block is fixedly connected to the side of the expansion plate near the conveyor roller.

[0013] The technical solution provided by this invention has the following advantages compared with the prior art: This invention features a lubrication unit and an outer expansion plate. The lubrication unit is triggered by the reverse rotation of the conveyor rollers, achieving "on-demand lubrication" and avoiding the redundancy or insufficiency of traditional timed lubrication. When the conveyor rollers rotate in the reverse direction, the pawl and ratchet on the journal engage, causing the annular block to rotate. The oil box inside the annular block, under centrifugal force, forces lubricating oil through the oil pipe into the journal's oil passage, forming a dynamic pressure oil film in the gap between the journal and the mounting base, suppressing dry friction. The drive unit controls the conveyor roller requiring lubrication to stop and rotate in the reverse direction individually. At this time, the roller's contact block disengages from the outer expansion plate, entering an unloaded state, while the other conveyor rollers maintain their rated speed and rotate in the forward direction under the coordinated control of the drive unit. The lubrication unit, through the pawl and ratchet mechanism, only supplies oil to the target roller rotating in the reverse direction, achieving lubrication without stopping the machine. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional separation structure of the frame and conveyor rollers in an embodiment of the present invention; Figure 3 This is a three-dimensional schematic diagram of the separation structure of the conveying roller and the lubrication unit in an embodiment of the present invention; Figure 4 This is a cross-sectional view of the lubrication unit according to an embodiment of the present invention; Figure 5 This is an embodiment of the present invention. Figure 4 A magnified structural diagram of part A in the middle; Figure 6 This is a schematic diagram of the three-dimensional separation structure of the rotating shaft and the outer expansion plate according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the three-dimensional state transformation structure of the outer expansion plate according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the three-dimensional state transformation structure of the outer abutment block according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the conveying of laminated glass according to an embodiment of the present invention.

[0016] The labels in the diagram represent: 1. Frame; 2. Mounting base; 21. Bracket; 22. Outer expansion plate; 221. Fixing plate; 3. Conveyor roller; 31. Journal; 311. Oil passage; 32. Movable groove; 33. Abutment block; 4. Lubrication unit; 41. Switching component; 411. Fastening ring; 412. Pawl; 42. Oil supply component; 421. Support frame; 422. Annular block; 423. Ratchet; 424. Oil box; 425. Oil pipe. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0018] The present invention will be further described below with reference to embodiments.

[0019] Example:

[0020] Please see Figures 1-9 This invention provides a technical solution: a scratch-free tempered glass conveying device based on a self-lubricating raceway, comprising: Rack 1; Mounting base 2 is provided in the frame 1, and multiple sets of mounting base 2 are arranged in an array along the center of the frame 1. Each set of mounting base 2 has two mounting bases arranged symmetrically along the center of the frame 1. A conveying roller 3 is rotatably mounted in the same set of mounting base 2. Both sides of the conveying roller 3 are provided with journals 31, and oil passages 311 are provided in the journals 31. A lubrication unit 4 is provided in the frame 1. The lubrication unit 4 includes a switching component 41 and an oil supply component 42. When the conveying roller 3 rotates in the opposite direction, the switching component 41 is opened and drives the oil supply component 42 to rotate synchronously, so that the lubricating oil in the oil supply component 42 is delivered to the journal 31 through the oil passage 311 to achieve lubrication.

[0021] The switching component 41 includes a fastening ring 411 fixedly connected to the outer surface of the journal 31, and the fastening ring 411 is rotatably connected to a pawl 412 by an elastic element disposed on its outer surface.

[0022] The oil passage 311 includes interconnected horizontal oil holes and vertical oil holes. The vertical oil holes are tapered and are arranged in a circular array along the center of the horizontal oil holes.

[0023] The oil supply component 42 includes a support frame 421 fixedly connected to the frame 1, and the support frame 421 is rotatably connected to an annular block 422 via a guide groove provided inside it. The annular block 422 is fixedly connected to a ratchet 423 that fits against the outer side of the pawl 412 via a connecting frame provided on its outer surface.

[0024] An oil box 424 for holding lubricating oil is fixedly connected inside the annular block 422. Multiple oil boxes 424 are arranged in a circular array along the center of the annular block 422. An oil pipe 425 connected to a horizontal oil hole is fixedly connected to the outer surface of the oil box 424.

[0025] The outer surface of the conveying roller 3 is provided with a movable groove 32, and the movable groove 32 is provided in multiple sets and distributed in a circumferential array along the center of the conveying roller 3. The movable groove 32 is rotatably connected to an abutment block 33 by an elastic element provided inside it, and the abutment block 33 is designed in an arc shape.

[0026] The mounting base 2 in the same group is rotatably connected to the bracket 21 through the annular groove provided on its adjacent surface. The bracket 21 is provided in multiple groups and is distributed in a circumferential array along the center of the mounting base 2. Each group of brackets 21 has two brackets and is symmetrically distributed along the center of the conveyor roller 3. The bracket 21 in the same group is slidably connected to the outer expansion plate 22 through the elastic element provided inside it. The outer expansion plate 22 is fixedly connected to the side of the outer expansion plate 22 near the conveyor roller 3, and the fixed plate 221 is in contact with the arc surface of the abutment block 33.

[0027] The principle and advantages of a scratch-free tempered glass conveying device based on a self-lubricating raceway: During the initial startup phase of the equipment, the operator controls the drive unit inside the frame 1, which drives the conveyor rollers 3 at a constant speed. Given the brittle mechanical properties of laminated glass, uneven force or speed fluctuations during transport can easily lead to localized stress concentration, causing glass breakage or surface damage. By employing a control strategy that independently drives each conveyor roller 3, real-time dynamic compensation for speed deviations at the transport points can be achieved, ensuring that the laminated glass maintains a horizontal linear trajectory during transport and effectively preserving surface flatness.

[0028] In the initial operating condition, the abutment block 33 is connected to the movable groove 32 via an elastic element (here, a high-strength torsion spring). The preload of the high-strength torsion spring keeps the abutment block 33 in its initial outward expansion position within the movable groove 32. When the drive unit drives the conveyor roller 3 to rotate at a constant speed, the abutment block 33 comes into contact with the fixed plate 221 inside the expansion plate. The contact interface between the fixed plate 221 and the abutment block 33 adopts a conjugate surface design of inclined and arc surfaces, respectively. During the rotation of the conveyor roller 3, as the abutment block 33 moves in a circular motion with the rotating shaft, its arc surface contour gradually presses against the inclined surface of the fixed plate 221. As the conveyor roller 3 continues to rotate, the contact stress between the abutment block 33 and the fixed plate 221 gradually increases, and a displacement coupling effect occurs in the contact area along the normal direction of the inclined surface. The radial force generated by the extrusion action drives the fixed plate 221 to overcome the elastic restoring force of the strong spring connected to it, and generates linear displacement along the radial direction of the conveying roller 3 until the outer expansion plate 22 reaches the maximum stroke position of the mechanical limit, thereby completing the adaptive adjustment process of the equivalent working diameter of the conveying roller 3. When the conveying roller 3 maintains a uniform rotation speed and the expansion plate reaches the maximum stroke, the outer expansion plate 22 rotates in coordination with the conveying roller 3 through the bracket 21. When the abutting block 33 is in the initial expansion position under the action of the strong torsion spring preload, the abutting block 33 is in the limit constraint position in the movable groove 32, that is, the inner wall of the movable groove 32 forms a rigid limit constraint on the abutting block 33, effectively suppressing the circumferential displacement of the abutting block 33 during the rotation of the shaft, and avoiding motion interference to the laminated glass conveying process.

[0029] After the conveyor roller 3 completes the adaptive adjustment of its working diameter, the external conveying mechanism transports the laminated glass to be tempered to the loading station of the frame 1. After the laminated glass comes into contact with the "integral" surface formed by the conveyor roller 3 and the outer expansion plate 22, the conveyor roller 3, with its adjusted equivalent working diameter, smoothly transports the laminated glass to the next process station, namely the feeding position of the tempering furnace, along the axial direction of the frame 1.

[0030] Under this operating condition, if the sliding friction pair formed by the journal 31 of the conveyor roller 3 and the mounting seat 2 inside the frame 1 enters a boundary lubrication or dry friction state due to the lack of lubricating medium, the coefficient of friction between the surface of the journal 31 and the mounting seat 2 will increase significantly. Frictional power consumption leads to increased temperature rise at the contact interface, causing adhesive wear and abrasive wear on the metal surface material, resulting in a decrease in the diameter of the journal 31. When the wear of the journal 31 causes the clearance between it and the mounting seat 2 to exceed the design tolerance zone, an unexpected radial clearance will form. During the rotation of the conveyor roller 3, this radial clearance will excite lateral vibration of the shaft system, generating high-frequency vibration excitation at the same frequency as the rotational speed. The vibration energy is transmitted to the laminated glass bearing surface through the conveyor roller 3, causing the interfacial shear force between the laminated glass and the intermediate PVB film layer to exceed the bonding strength threshold, triggering relative slippage between the layers. This interlayer displacement disrupts the integrity of the laminated glass composite structure, which can easily lead to deviations in the bonding accuracy between the glass substrate and the film during subsequent tempering processes, resulting in quality defects such as bubbles and delamination. This has a significant impact on the optical performance and structural reliability of the laminated glass.

[0031] When a specific conveyor roller 3 requires lubrication maintenance, that roller 3 enters a stopped state under the control of the drive unit, while the remaining non-maintenance conveyor rollers 3 maintain their rated speed and operate in the forward direction under the coordinated control of the drive unit, ensuring that the continuity of the laminated glass conveying process is not affected by single-roller maintenance operations. At the instant the target conveyor roller 3 stops, the contact stress between the abutment block 33 and the fixed plate 221 decreases gradually. Under the elastic restoring force of the strong spring, the outer expansion plate 22 undergoes a slight contraction displacement along the radial direction of the conveyor roller 3, causing the outer surface of the expansion plate to disengage from the laminated glass bearing surface. As the conveyor roller 3 performs a reverse rotation, the conjugate contact area between the abutment block 33 and the inclined surface of the fixed plate 221 gradually separates, and the contact compressive stress exhibits a non-linear decreasing trend. At this time, the strong spring built into the expansion plate begins to release its pre-compressed elastic potential energy, driving the outer expansion plate 22 to return to its original position along the elastic element (radial guide mechanism) towards the central axis of the conveyor roller 3. When the abutment block 33 is completely freed from the mechanical constraint of the inclined surface of the fixed plate 221, the inner surface of the outer expansion plate 22 and the outer circular surface of the mounting base 2 form a coaxial fit, completing the dynamic reduction process of the equivalent working diameter of the conveyor roller 3. At this point, the physical contact between the surface of the conveyor roller 3 and the laminated glass is completely released, and the machine enters a no-load maintenance operation state.

[0032] During the reverse rotation of the conveyor roller 3, when the non-sloping constraint surface of the fixed plate 221 comes into rigid contact with the abutment block 33, the normal compressive torque generated between the contact surfaces exceeds the preset initial preload torque threshold of the powerful torsion spring. At this time, the abutment block 33, as a rotatable component hinged to the movable groove 32, undergoes angular deflection displacement around its central hinge axis, achieving self-retraction by overcoming the elastic restoring torque of the torsion spring. This adaptive rotation process effectively avoids the problem of motion trajectory interference between the abutment block 33 and the fixed plate 221 when the conveyor roller 3 rotates in reverse, ensuring that the conveyor roller 3 can still maintain no contact between the outer expansion plate 22 and the laminated glass under reverse rotation conditions, providing safe and reliable mechanical isolation conditions for equipment maintenance operations.

[0033] When the conveyor roller 3 continues to rotate in the reverse direction, the pawl 412 and ratchet 423 drive the annular block 422 to rotate synchronously along the central axis of the conveyor roller 3. Since the reverse rotation speed of the conveyor roller 3 is higher than the forward rotation speed, the centrifugal force generated by the high-speed rotation of the annular block 422 drives the push plate and counterweight rod in the oil box 424 to overcome the spring preload and pump the lubricating oil along the oil pipe 425 to the oil passage 311 inside the journal 31. The lubricating oil is finally delivered to the sliding bearing pair gap formed by the journal 31 and the mounting seat 2 through the oil passage 311 composed of horizontal and vertical oil holes. By establishing a hydrodynamic oil film, fluid lubrication of the friction pair is achieved, suppressing the increase of the friction coefficient and the occurrence of adhesive wear.

[0034] The solenoid valve on oil pipe 425 employs a speed threshold control strategy. When the rotational speed of the annular block 422 reaches a preset threshold, the solenoid valve opens, allowing lubricating oil to enter oil passage 311. When the annular block 422 is stationary or its rotational speed is below the threshold, the solenoid valve closes to prevent lubricating oil leakage. The oil filling port on the outside of the annular block 422 is connected to the oil box 424 via a check valve, forming a closed-loop lubrication system capable of repeated oil filling. Oil pipe 425 is connected to the oil passage 311 inside journal 31 using a hydraulic rotary joint to avoid lubricating oil leakage due to sealing gaps caused by relative rotation.

[0035] The vertical oil orifice in oil passage 311 has a conical design, with a larger diameter at the inlet and a gradually narrowing diameter at the outlet. The cross-sectional area of ​​the conical channel decreases along the flow direction, creating a velocity gradient for the lubricating oil (the velocity at the outlet is higher than that at the inlet). When the lubricating oil passes through the conical orifice, the reduced diameter at the outlet converts the fluid kinetic energy into injection pressure, ensuring that the lubricating oil penetrates the mating clearance between journal 31 and mounting base 2 at a higher flow rate. Especially under high-speed reverse rotation conditions, it can effectively overcome the dynamic oil film resistance between the friction pairs and achieve precise lubrication.

[0036] After the lubrication operation is completed, the drive unit controls the conveyor roller 3 to rotate forward again. Under this condition, with the abutment block 33 and the fixing plate 221 working together, the outer expansion plate 22 can be moved again along the radial direction of the conveyor roller 3 until it returns to the working diameter state, thereby realizing the continuous conveying operation of laminated glass products.

[0037] The present invention employs a lubrication unit 4 and an outer expansion plate 22, which has the following advantages: Firstly, the lubrication unit 4 is triggered by the reverse rotation of the conveyor roller 3, achieving "on-demand lubrication" and avoiding the redundancy or insufficiency of traditional timed lubrication. When the conveyor roller 3 rotates in the reverse direction, the pawl 412 outside the journal 31 engages with the ratchet 423, driving the annular block 422 to rotate. The oil box 424 inside the annular block 422 is subjected to centrifugal force, which forces the lubricating oil through the oil pipe 425 into the oil passage 311 of the journal 31, thereby forming a dynamic pressure oil film in the gap between the journal 31 and the mounting seat 2, suppressing dry friction.

[0038] Secondly, the vertical oil holes in oil passage 311 adopt a conical structure, which enhances the ability of lubricating oil to be sprayed and penetrated into the friction pair gap. The conical channel has a large inlet diameter and a gradually narrowing outlet, creating a velocity gradient when the lubricating oil flows through (the outlet velocity is higher than the inlet velocity), converting the fluid kinetic energy into injection pressure. During high-speed reverse rotation, this design can overcome the dynamic oil film resistance of the friction pair, ensuring that the lubricating oil penetrates into the mating gap between journal 31 and mounting seat 2 under high pressure, making it particularly suitable for precise lubrication under high-speed operating conditions.

[0039] Thirdly, the abutment block 33 on the outer surface of the conveyor roller 3 cooperates with the outer expansion plate 22 to dynamically adjust the equivalent working diameter. When the conveyor roller 3 rotates in the forward direction, the abutment block 33 and the fixing plate 221 of the outer expansion plate 22 are progressively squeezed, driving the outer expansion plate 22 to expand radially and dynamically adjust the working diameter of the conveyor roller 3. At this time, the "whole" formed by the conveyor roller 3 and the outer expansion plate 22 can transport laminated glass normally. When rotating in the reverse direction, the abutment block 33 retracts itself, releasing the contact between the conveyor roller 3 and the laminated glass, which is convenient for maintenance.

[0040] Fourthly, when the conveyor roller 3 rotates in the reverse direction, the abutment block 33 rotates adaptively, disengaging from the outer expansion plate 22 and forming a mechanical isolation. During reverse rotation, the non-sloping surface of the fixed plate 221 contacts the abutment block 33, and the normal pressing torque breaks through the preload of the torsion spring, causing the abutment block 33 to rotate around the hinge axis and be housed in the movable groove 32. This action releases the constraint between the abutment block 33 and the outer expansion plate 22, ensuring that the surface of the conveyor roller 3 is completely separated from the glass, providing a safe space for single-roller maintenance, while not affecting the normal conveying of other rollers.

[0041] Fifthly, the drive unit controls the individual stop and reverse rotation of the conveyor roller 3 requiring lubrication. At this time, the contact block 33 of the roller disengages from the outer expansion plate 22 and enters an unloaded state, while the other conveyor rollers 3 maintain their rated speed and rotate in the forward direction under the coordinated control of the drive unit. The lubrication unit 4, through the pawl 412 and ratchet 423 mechanism, triggers oil supply only to the target roller rotating in the reverse direction, achieving lubrication without stopping the machine.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scratch-free tempered glass conveying device based on a self-lubricating raceway, characterized in that, include: Rack (1); A mounting base (2) is provided in the frame (1), and the mounting base (2) is provided in multiple sets and arranged in an array along the center of the frame (1). Each set of the mounting base (2) has two mounting bases and is symmetrically arranged along the center of the frame (1). A conveying roller (3) is rotatably installed in the mounting base (2) of the same set. A journal (31) is provided on both sides of the conveying roller (3), and an oil passage (311) is provided in the journal (31). A lubrication unit (4) is provided in the frame (1). The lubrication unit (4) includes a switching component (41) and an oil supply component (42). When the conveying roller (3) rotates in the opposite direction, the switching component (41) is turned on and drives the oil supply component (42) to rotate synchronously, so that the lubricating oil in the oil supply component (42) is delivered to the journal (31) through the oil passage (311) to achieve lubrication.

2. The planar glass scratch-free tempering conveyor based on a self-lubricating raceway according to claim 1, characterized in that: The switching component (41) includes a fastening ring (411) fixedly connected to the outer surface of the journal (31), and the fastening ring (411) is rotatably connected to a pawl (412) by an elastic element provided on its outer surface.

3. The planar glass scratch-free tempering conveyor based on a self-lubricating raceway according to claim 1, characterized in that: The oil passage (311) includes interconnected horizontal oil holes and vertical oil holes. The vertical oil holes are tapered and are arranged in a circular array along the center of the horizontal oil holes.

4. The planar glass scratch-free tempering conveyor based on a self-lubricating raceway according to claim 1, characterized in that: The oil supply component (42) includes a support frame (421) fixedly connected in the frame (1), and the support frame (421) is rotatably connected to an annular block (422) through a guide groove provided inside it. The annular block (422) is fixedly connected to a ratchet (423) that fits against the outside of the pawl (412) through a connecting frame provided on its outer surface.

5. The planar glass scratch-free tempering conveyor based on a self-lubricating raceway according to claim 4, characterized in that: The annular block (422) is fixedly connected to an oil box (424) for holding lubricating oil. The oil box (424) is provided in multiple ways and is arranged in a circular array along the center of the annular block (422). The outer surface of the oil box (424) is fixedly connected to an oil pipe (425) that is connected to a horizontal oil hole.

6. The planar glass scratch-free tempering conveyor based on a self-lubricating raceway according to claim 1, characterized in that: The outer surface of the conveying roller (3) is provided with a movable groove (32), and the movable groove (32) is provided in multiple sets and distributed in a circular array along the center of the conveying roller (3). The movable groove (32) is rotatably connected to an abutment block (33) by an elastic element provided inside it, and the abutment block (33) is designed in an arc shape.

7. The planar glass scratch-free tempering conveyor based on a self-lubricating raceway according to claim 1, characterized in that: The mounting base (2) in the same group is rotatably connected to a bracket (21) through an annular groove on its adjacent surface. The bracket (21) has multiple sets and is arranged in a circular array along the center of the mounting base (2). Each set of brackets (21) has two brackets and is symmetrically distributed along the center of the conveying roller (3). The brackets (21) in the same group are slidably connected to an outer expansion plate (22) through an elastic element provided inside. The outer expansion plate (22) is fixedly connected to a fixing plate (221) that fits against the arc surface of the abutment block (33) on the side of the outer expansion plate (22) close to the conveying roller (3).

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