Slit threading machine with bearing and protecting functions

Abstract

A slit tape threading machine with bearing and protecting functions relates to the technical field of slit refractory brick production and comprises a vertical frame body and a lifting table vertically sliding on the frame body, and the frame body is provided with a linear rail assembly for the lifting table to vertically slide, a lead screw for driving the lifting table to vertically slide and a bearing for the lead screw to be in running fit. A nut matched with the screw rod is arranged on the lifting table, two bearing mechanisms are arranged on the lifting table, and each bearing mechanism comprises a swing arm and a rolling wheel which are rotationally connected to the lifting table; a torsion spring is arranged between the swing arm and the lifting platform, and the bottom of the swing arm abuts against the frame body under the torsion of the torsion spring; a power rope is arranged between the roller and the top of the swing arm, and when the roller vertically moves along with the lifting platform, the power rope is wound to pull the swing arm to turn over after the roller and the frame rub and rotate, so that the bottom of the swing arm is separated from the frame. The pressure on a bearing and a lead screw when the lifting platform stands is reduced, so that the equipment maintenance cost of personnel is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of the production of slit refractory bricks, in particular to a slit tape threading machine with a load-bearing and protection function. Background Art

[0002] The patent application number is 202110837768.4, and the invention patent is named a tape threading machine for a casting mold of a slit refractory brick. Through the cooperation of two lifting platforms, a clamping mechanism, a glue injection mechanism and a power mechanism included therein, the tape threading machine penetrates a PE tape into the slit of a corresponding mold and fixes it with glue. Compared with the traditional manual tape threading method, the tape threading machine has a greatly improved degree of automation, reduced labor intensity and increased tape threading speed, and is particularly suitable for the large-scale production of slit refractory bricks.

[0003] During the lifting process of the lifting platform, linear rails arranged on both sides of the frame body along the vertical direction are used to maintain the stability of the sliding of the lifting platform. And the first lead screw, the second lead screw, the first motor and the second motor distributed along the vertical direction are used to drive the lifting platform to lift vertically. The two ends of the optical axis sections of the first lead screw and the second lead screw are supported and positioned by bearings arranged on the frame body, so that the lifting platform can be stably controlled to perform the tape threading process.

[0004] After the lifting platform moves to a suitable height, the nuts fixed on the lifting platform will be positioned through the self-locking function of the first lead screw or the second lead screw, that is, the weight of the stationary lifting platform is borne by the first lead screw or the second lead screw. When the first lead screw or the second lead screw bears the weight of the stationary lifting platform, the stationary lifting platform will exert a certain pressure on the threads of the first lead screw or the second lead screw, and will also exert an axial pressure on the corresponding bearings, thereby accelerating the damage of the first lead screw, the second lead screw and the bearings, and inevitably causing the lifting accuracy of the lifting platform to decrease. Therefore, it is necessary for personnel to maintain the first lead screw, the second lead screw and the bearings in a short time, that is, the maintenance period of the tape threading machine is shortened, and thus the cost of personnel maintaining the equipment is increased. Summary of the Utility Model

[0005] The utility model aims to provide a slit tape threading machine with a load-bearing and protection function, so as to reduce the pressure on the bearings and lead screws when the lifting platform is stationary, thereby reducing the cost of personnel maintaining the equipment.

[0006] To solve the above technical problems, the specific scheme adopted by the utility model is as follows:

[0007] A slit tape threading machine with a load-bearing protection function comprises a vertical frame and a lifting platform vertically sliding on the frame, the frame is provided with a linear rail assembly for vertical sliding of the lifting platform, a screw rod for driving the lifting platform to slide vertically, and a bearing for rotationally cooperating with the screw rod, and the lifting platform is provided with a nut cooperating with the screw rod, and the lifting platform is provided with two load-bearing mechanisms, the load-bearing mechanisms comprising a swing arm and a roller rotatably connected to the lifting platform;

[0008] A torsion spring is provided between the swing arm and the lifting platform, and the bottom of the swing arm is in contact with the top of the frame due to the torsion force of the torsion spring;

[0009] The rim of the roller is in contact with the top of the frame, and a power rope is provided between the roller and the top of the swing arm. When the roller moves vertically with the lifting platform, the roller rotates by friction with the frame and then the power rope is reeled in to pull the swing arm to flip, so that the bottom of the swing arm is separated from the frame.

[0010] As a further optimization of the slit tape threading machine with load-bearing protection function of the utility model, the swing arm is rotatably connected to a support column fixed on the lifting platform, and a torsion spring is arranged around the support column.

[0011] As a further optimization of the slit tape threading machine with load-bearing protection function of the utility model, a U-shaped ring connected to the power rope is provided on the side of the swing arm facing the lifting platform.

[0012] As a further optimization of the slit tape threading machine with load-bearing protection function of the utility model, the shape of the swing arm is a boomerang shape.

[0013] As a further optimization of the slit tape threading machine with load-bearing protection function of the utility model, the bottom surface of the swing arm is a rough surface, and the swing arm is made of wear-resistant material.

[0014] As a further optimization of the utility model of a slit tape threading machine with a load-bearing protection function, the roller includes a rotating shaft rotatably connected to the lifting platform and a top pressure wheel fixed on the rotating shaft, a winding wheel connected to the power rope is fixed on the rotating shaft, and the top pressure wheel is in contact with the frame.

[0015] As a further optimization of the slit tape threading machine with load-bearing protection function of the utility model, the linear rail assembly includes a guide rail fixed on the frame and a sliding block slidably matched with the guide rail, and the sliding block is fixedly connected to the lifting platform.

[0016] As a further optimization of the slit tape threading machine with load-bearing protection function of the utility model, the bottom end of the screw rod is connected to a stepper motor through a coupling transmission, and the stepper motor is fixedly connected to a base plate fixed on the bottom side of the frame.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] The utility model disperses the weight of the lifting platform in a static state to the frame body by arranging an oscillating arm rotatably connected to the lifting platform and then touching the top of the frame body. After the weight of the lifting platform in a static state is dispersed to the frame body, the pressure of the nut on the thread of the lead screw will be reduced, and at the same time, the axial pressure of the bearing will also be reduced synchronously. After the weight borne by the lead screw and the bearing is reduced by the weight of the lifting platform, the damage caused by the weight pressure of the lifting platform borne by the lead screw and the bearing will be reduced synchronously, thereby extending to a certain extent the maintenance cycle of the first lead screw, the second lead screw and the bearing by personnel, and further reducing the equipment maintenance cost to a certain extent.

[0019] As a further optimization of the utility model, the stepping motor is arranged at the bottom side of the frame body for easy access by personnel, that is, it is convenient for personnel to replace or repair when the stepping motor is damaged or fails. Description of the Drawings

[0020] Figure 1 is a rear view structural schematic diagram of the utility model;

[0021] Figure 2 is a partial enlarged structural schematic diagram of the utility model;

[0022] Figure 3 is a partial structural schematic diagram of the utility model.

[0023] Reference numerals: 1, frame body; 2, stepping motor; 3, bearing; 4, bearing mechanism, 401, torsion spring; 402, oscillating arm; 403, power rope; 404, roller, 4041, rotating shaft; 4042, pressing wheel; 405, U-shaped ring; 406, support column; 407, winding wheel; 5, lifting platform; 6, lead screw; 7, linear guide assembly, 701, guide rail; 702, sliding block; 8, nut. Detailed Embodiment

[0024] As Figure 1 shown, a slit tape threading machine with a bearing and protection function of the utility model includes a vertical frame body 1 and a lifting platform 5. A linear guide assembly 7 for restricting the flipping of the lifting platform 5 and enabling the lifting platform 5 to stably slide vertically is arranged on the frame body 1. A nut 8 is fixed on the lifting platform 5, and the nut 8 is in threaded cooperation with a lead screw 6. The lead screw 6 is rotatably matched with a bearing 3 fixed on the frame body 1. When the lead screw 6 rotates under the support of the bearing 3 and the frame body 1, the lead screw 6 will cooperate with the nut 8 to drive the lifting platform 5 to rise and fall, and then perform the tape threading process of the PE tape.

[0025] The linear guide assembly 7 includes a guide rail 701 fixed on the frame body 1, and the guide rail 701 is slidably matched with a sliding block 702 fixedly connected to the lifting platform 5, so that the lifting platform 5 can cooperate with the lead screw 6 and the nut 8 to rise and fall to different height positions, thereby performing a high-quality tape threading process.

[0026] The bottom end of the lead screw 6 is drivingly connected to a stepper motor 2 through a coupling, so as to achieve the purpose of accurately controlling the lifting of the lifting table 5. The stepper motor 2 is fixedly connected to the substrate fixedly arranged on the bottom side of the frame body 1 by screws. The stepper motor 2 is arranged on the bottom side of the frame body 1, which is convenient for personnel to detect and repair the stepper motor 2.

[0027] In order to reduce the pressure on the bearing and the lead screw when the lifting table 5 is stationary, thereby reducing the cost of personnel maintaining the equipment, as Figure 1 and Figure 2 shown, two bearing mechanisms 4 are arranged on the lifting table 5. Furthermore, when the lifting table 5 is stationary, the two bearing mechanisms 4 are used to press against the frame body 1, and then the weight of the lifting table 5 in the stationary state is dispersed to the frame body 1, that is, the pressure exerted by the weight of the lifting table 5 on the bearing 3 and the lead screw 6 and the damage caused by the corresponding pressure are reduced.

[0028] As Figure 2 and Figure 3 shown, the bearing mechanism 4 includes a swing arm 402 rotatably connected to the lifting table 5 and a roller 404. The swing arm 402 is in the shape of a boomerang, and the bottom of the swing arm 402 touches the top of the frame body 1. A support column 406 is rotatably connected to the swing arm 402. When the bottom of the swing arm 402 touches the guide rail 701 included in the linear guide assembly 7 of the frame body 1, the swing arm 402 can cooperate with the support column 406 to disperse the weight of the lifting table 5 to the frame body 1, thereby reducing the damage to the thread of the lead screw 6 and the bearing 3 caused by the weight of the lifting table 5 when the lifting table 5 is stationary. In other embodiments other than this embodiment, the bottom of the swing arm 402 can also touch other parts of the frame body 1.

[0029] The swing arm 402 is made of wear-resistant material. When the lifting table 5 is lifted or lowered, the bottom of the swing arm 402 will slide and rub on the frame body 1 or the linear guide assembly 7 for a certain amount. At this time, the material of the swing arm 402 can reduce the friction damage of the swing arm 402, so that the service life of the swing arm 402 is longer. The bottom surface of the swing arm 402 is a rough surface, so as to maintain the stability of the swing arm 402 pressing against the frame body 1, that is, the weight of the lifting table 5 in the stationary state is stably dispersed to the frame body 1.

[0030] A torsion spring 401 is arranged between the swing arm 402 and the lifting table 5. The torsion spring 401 is wound around the support column 406, and the support column 406 can maintain the stability of the torsion spring 401 during use. One end of the torsion spring 401 is fixed on the lifting table 5, and the other end of the torsion spring 401 is fixed on the swing arm 402. The swing arm 402 can make the bottom of the swing arm 402 touch the guide rail 701 of the frame body 1 under the torsional force of the torsion spring 401, and then disperse the weight of the lifting table 5 to the frame body 1.

[0031] The roller 404 includes a rotating shaft 4041 whose end is rotatably arranged on the lifting platform 5. A winding wheel 407 and a pressing wheel 4042 are fixedly arranged on the rotating shaft 4041 in sequence along its axial direction towards the frame 1 side. The rim of the pressing wheel 4042 abuts against the guide rail 701 of the frame 1. In other embodiments other than this embodiment, the pressing wheel 4042 can also abut against other parts of the frame 1. When the lifting platform 5 ascends and descends, the pressing wheel 4042 will ascend and descend with the lifting platform 5 driven by the rotating shaft 4041. At this time, the pressing wheel 4042 will rotate due to its friction with the frame 1 or the linear guide assembly 7. The rotation of the pressing wheel 4042 will drive the rotating shaft 4041 to rotate synchronously, and will also drive the winding wheel 407 to rotate synchronously.

[0032] A power rope 403 is arranged between the winding wheel 407 and the top of the swing arm 402. The arrangement of the winding wheel 407 can stably wind the power rope 403. One end of the power rope 403 is fixedly connected to the surface of the winding wheel 407, and the other end of the power rope 403 is fixedly connected with a U-shaped ring 405. The U-shaped ring 405 is fixedly connected to one side surface of the swing arm 402 facing the frame 1. After the power rope 403 is wound and shortened by the winding wheel 407, the top of the swing arm 402 will approach the winding wheel 407. Subsequently, the swing arm 402 will be pulled by the support column 406 to flip, so that the bottom of the swing arm 402 is separated from the frame 1 to avoid affecting the precise lifting of the lifting platform 5. The setting of the U-shaped ring 405 can facilitate personnel to disassemble the power rope 403 to replace the swing arm 402.

[0033] In the specific use process, the stepping motor 2 operates to make the lead screw 6 rotate. The rotation of the lead screw 6 cooperates with the nut 8 to drive the lifting platform 5 to ascend and descend, and at the same time, cooperates with the restriction and guidance of the linear guide assembly 7 to make the lifting platform 5 precisely ascend and descend for the threading process.

[0034] When the lifting platform 5 ascends and descends, the lifting of the lifting platform 5 will drive the rotating shaft 4041 and the support column 406 to ascend and descend synchronously. When the rotating shaft 4041 ascends and descends, it will make the pressing wheel 4042 follow. After that, the pressing wheel 4042 will rotate due to its friction with the guide rail 701, and further make the rotating shaft 4041 and the roller 404 rotate. At the same time, a certain amount of slippage will also occur between the bottom of the swing arm 402 and the guide rail 701, and then the winding wheel 407 will be driven to rotate to wind the power rope 403 synchronously. After the power rope 403 is wound, it will drive the swing arm 402 to flip under the limit of the support column 406 against the torsional force of the torsion spring 401, that is, to separate the bottom of the swing arm 402 from the frame 1 or the linear guide assembly 7.

[0035] During the continuous ascending and descending of the lifting platform 5, before the swing arm 402 touches the roller 404 and affects the rotation of the roller 404, the torsional force of the torsion spring 401 will overcome the friction force between the rim of the pressing wheel 4042 and the guide rail 701, and further make the roller 404 slip on the guide rail 701, so as to avoid the over-rotation of the swing arm 402 from affecting the rotation of the roller 404.

[0036] After the lifting table 5 comes to rest, the roller 404 composed of the rotating shaft 4041 and the pressing wheel 4042 will stop rotating. Subsequently, the torsional force of the torsion spring 401 will reset the swing arm 402. At the same time, it will also cause the roller 404 to slip and reset through the power rope 403. Subsequently, the bottom of the swing arm 402 will touch the top of the guide rail 701, thereby dispersing the weight of the lifting table 5 onto the frame body 1, and further reducing the impact of the lifting table 5 on the lead screw 6 and the bearing 3.

Claims

1. A slit tape threading machine with a load-bearing protection function, comprising a vertical frame (1) and a lifting platform (5) vertically sliding on the frame (1), the frame (1) being provided with a linear rail assembly (7) for the lifting platform (5) to slide vertically, a screw rod (6) for driving the lifting platform (5) to slide vertically, and a bearing (3) for the screw rod (6) to rotate, and the lifting platform (5) being provided with a nut (8) cooperating with the screw rod (6), characterized in that: The lifting platform (5) is provided with two bearing mechanisms (4), and the bearing mechanisms (4) include a swing arm (402) and a roller (404) rotatably connected to the lifting platform (5); A torsion spring (401) is provided between the swing arm (402) and the lifting platform (5), and the bottom of the swing arm (402) is in contact with the frame (1) due to the torsion force of the torsion spring (401); The wheel rim of the roller (404) is in contact with the frame (1), and a power rope (403) is provided between the roller (404) and the top of the swing arm (402). When the roller (404) moves vertically with the lifting platform (5), the roller (404) rotates by friction with the frame (1) and then the power rope (403) is rolled up to pull the swing arm (402) to flip, so that the bottom of the swing arm (402) is separated from the frame (1).

2. A slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: The swing arm (402) is rotatably connected to a support column (406) fixed on the lifting platform (5), and the torsion spring (401) is arranged around the support column (406).

3. A slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: A U-shaped ring (405) connected to a power rope (403) is provided on one side of the swing arm (402) facing the lifting platform (5).

4. A slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: The swing arm (402) is shaped like a boomerang.

5. The slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: The bottom surface of the swing arm (402) is a rough surface, and the swing arm (402) is made of wear-resistant material.

6. A slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: The roller (404) comprises a rotating shaft (4041) rotatably connected to the lifting platform (5) and a pressing wheel (4042) fixed on the rotating shaft (4041); a winding wheel (407) connected to the power rope (403) is fixedly provided on the rotating shaft (4041); and the pressing wheel (4042) contacts the frame (1).

7. The slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: The linear rail assembly (7) comprises a guide rail (701) fixed on the frame (1) and a sliding block (702) slidably matched with the guide rail (701), and the sliding block (702) is fixedly connected to the lifting platform (5).

8. The slit tape threading machine with load-bearing protection function according to claim 1, characterized in that: The bottom end of the screw rod (6) is connected to a stepping motor (2) via a coupling, and the stepping motor (2) is fixedly connected to a base plate fixed on the bottom side of the frame (1).

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