A belt tensioning force online adjustable turning type linear motor module

Abstract

This invention relates to the field of motors, specifically to a linear motor module with adjustable belt tension online. The module includes a mounting plate, a sliding mechanism, an adjusting mechanism, and an anti-deviation mechanism. The sliding mechanism includes a worktable, a drive assembly, and a first sliding assembly. The adjusting mechanism includes a tension wheel, an electrical control assembly, and two sliding frames. The anti-deviation mechanism includes a lifting assembly, two traction assemblies, two second sliding assemblies, and several limit rollers. This linear motor module with adjustable belt tension online firstly achieves automatic monitoring of the tension of the synchronous belt during operation via a current monitoring relay. Secondly, it automatically adjusts the tension without manual intervention after detecting a decrease in tension. Therefore, it achieves online adjustment of the synchronous belt tension without power interruption, thus preventing disruption to production and processing.

Description

Technical Field

[0001] This invention relates to the field of electric motors, and more specifically to a turn-type linear motor module with adjustable belt tension. Background Technology

[0002] In a standard linear motor module, the power-providing motor is typically directly connected to the lead screw in a straight line. A deflection type, on the other hand, involves the motor and lead screw arranged parallel to each other. Through transmission components such as synchronous belts and pulleys, the motor's power is "deflected" to the lead screw, which then drives the slider and the worktable on top of the slider to slide linearly, performing the machining process.

[0003] The existing linear motor module with turning angle has the following shortcomings: 1. During the operation of the turn-type linear motor module, since the synchronous belt is mainly made of elastic materials such as rubber or polyurethane, and is wrapped with steel wire or glass fiber for tensile strength, under the continuous tensile force for a long time, this polymer material will undergo "stress relaxation", that is, the internal molecular chains will slowly rearrange. As a result, the tension that the synchronous belt can provide will decrease over time, even though it is being tightened. When the tension of the synchronous belt decreases, the power of the module must be turned off first, and then the tension of the synchronous belt must be adjusted manually using disassembly tools or the adjustment element built into the module. Therefore, online adjustment of belt tension cannot be achieved, which reduces adjustment efficiency and delays production and processing efficiency. 2. The existing synchronous belts lack limiting structures on both sides. Even when the tension is increased, the synchronous belts are prone to deviation under certain external forces. On the one hand, the transmission effect of the synchronous belts cannot be guaranteed, i.e., the stability of the synchronous belts after tension adjustment cannot be guaranteed, which can easily affect the positioning accuracy of the worktable. On the other hand, the synchronous belts are prone to friction with the retaining edge of the synchronous pulleys, resulting in damage to the edges of the synchronous belts, which severely shortens the service life of the synchronous belts and requires frequent replacement, increasing the operating cost of the linear motor module. Summary of the Invention

[0004] The purpose of this invention is to provide a linear motor module with adjustable belt tension online.

[0005] To achieve this objective, the present invention adopts the following technical solution: A linear motor module with adjustable belt tension is provided, including a mounting plate; It also includes a sliding mechanism, an adjusting mechanism, and an anti-deviation mechanism; The sliding mechanism is located on the top of the mounting plate. The sliding mechanism includes a worktable, a drive assembly, and a first sliding assembly. The drive assembly is located on the top of the mounting plate, the first sliding assembly is located on the drive assembly, and the worktable is fixedly located on the first sliding assembly. The adjustment mechanism is located on the top of the mounting plate. The adjustment mechanism includes a tension wheel, an electrical control component, and two sliding frames. The two sliding frames are symmetrically arranged on the top of the mounting plate. The tension wheel rotates between the two sliding frames. The electrical control component is located between the top of the mounting plate and the tension wheel. The anti-deviation mechanism is located on the top of the mounting plate. The anti-deviation mechanism includes a lifting assembly, two traction assemblies, two second sliding assemblies, and several limiting rollers. The two second sliding assemblies are symmetrically arranged on the top of the mounting plate. The lifting assembly is located between the two second sliding assemblies. Several limiting rollers are rotatably mounted on the two second sliding assemblies. The two traction assemblies are located between the lifting assembly and the two sliding frames.

[0006] Furthermore, the electronic control assembly includes an electric push rod, a swing rod, and a positioning rod. A limit plate is fixedly provided on the top of the mounting plate, and a bearing is fixedly provided on the top of the limit plate. The positioning rod is fixedly provided on the inner ring of the bearing, and the swing rod is fixedly provided on the end of the positioning rod away from the bearing. A horizontal plate is fixedly provided on the bottom outer wall of the limit plate, and the electric push rod is hinged between the end of the horizontal plate away from the limit plate and the end of the swing rod.

[0007] Furthermore, each sliding frame includes two limiting rods, a base plate, a slider, two slide bars, and two buffer springs. The base plate is fixedly mounted on the top of the mounting plate, and the two limiting rods are fixedly mounted on the top of the base plate. Each buffer spring is sleeved on the upper half of the outer wall of one limiting rod, and each slide bar is slidably mounted on the outer wall of one limiting rod. The slider is fixedly mounted between the two slide bars. Each limiting rod has an anti-detachment block fixedly mounted at its top. Each anti-detachment block and one slide bar respectively abut against both ends of a buffer spring. The tension wheel is rotatably connected to the two sliders through the first rotating shaft, and the end of the swing arm away from the electric push rod is hinged to the top of one of the sliders.

[0008] Furthermore, each second sliding assembly includes a mounting rod, a wedge, two support frames, and two guide rods. The two support frames are symmetrically arranged on the top of the mounting plate, and each guide rod is fixedly mounted on the top of one support frame. The mounting rod is slidably mounted between the two guide rods via two sliding columns. Several limiting rollers are rotatably connected to the mounting rod via a second rotating shaft, and the wedge is fixedly mounted on the top of the mounting rod via an adapter rod.

[0009] Furthermore, the lifting assembly includes a trapezoidal top block, a lifting rod, and a return spring. A baffle is fixedly installed on the top of the mounting plate, and a support plate is fixedly installed on the outer wall of the baffle. Two L-shaped rods are fixedly installed on the top of the support plate, and a top plate is fixedly installed between the tops of the two L-shaped rods. The lifting rod is slidably installed on the outer wall of the top plate. The trapezoidal top block is fixedly installed at the bottom end of the lifting rod through a transition plate. The return spring is sleeved on the outer wall of the lifting rod. The top plate and the transition plate respectively abut against the two ends of the return spring. The trapezoidal top block is slidably connected to two wedges through two limiting strips, and a tension spring is fixedly installed between the two transition rods.

[0010] Furthermore, each traction assembly includes a pull plate, a pull rope, and two limiting wheels. The pull plate is fixedly mounted on the side wall of one of the slide bars. Two L-shaped frames are fixedly mounted on the top of the mounting plate. The two limiting wheels are rotatably mounted on the L-shaped frames and L-shaped rods, respectively. Two connecting blocks are fixedly mounted on the top of the trapezoidal top block. The pull rope is fixedly mounted between the pull plate and one of the connecting blocks.

[0011] Furthermore, four drive wheels are rotatably arranged between the support plate and the support frame, and the outer wall of each pull rope is in contact with the outer edge of every two drive wheels located on the same side.

[0012] Furthermore, the drive assembly includes a stepper motor, a lead screw, a synchronous belt, and two synchronous pulleys. Two support plates are fixedly mounted on the top of the mounting plate. The lead screw is rotatably positioned between the tops of the two support plates. The stepper motor is fixedly mounted on the top of the mounting plate. The two synchronous pulleys are respectively fixed on one end of the lead screw and the output end of the stepper motor. The synchronous belt is sleeved between the two synchronous pulleys.

[0013] Furthermore, the first sliding assembly includes an adapter block, two guide rails, two slide plates, and four support rods. The two guide rails are symmetrically arranged on the top of the mounting plate, and each slide plate is slidably mounted on the top of one guide rail. The four support rods are respectively fixed on the top of the two slide plates. The bottom of the worktable is fixedly connected to the top of the four support rods. The adapter block is fixedly mounted on the bottom of the worktable and is threadedly connected to the lead screw.

[0014] Furthermore, a laser rangefinder is fixedly installed at the bottom of the workbench, and a sensing column is fixedly installed on the top of one of the support plates away from the workbench, with the laser emitting end of the laser rangefinder facing the sensing column.

[0015] The beneficial effects of this invention are: This invention utilizes an adjustment mechanism, comprising a tensioning wheel, an electronic control component, and two sliding frames. Simultaneously, a current monitoring relay is designed to monitor the current value of the stepper motor driver in real time during the operation of the linear motor module. When the monitored current value is found to be lower than the preset standard current value within the controller, the current monitoring relay sends this signal to the controller. This triggers the electronic control component, which in turn drives the tensioning wheel to slide vertically upwards between the two sliding frames, thus tightening the bottom edge of the synchronous belt and increasing the friction between the synchronous belt and the two synchronous pulleys. Firstly, the current monitoring relay automatically monitors the tension of the synchronous belt during operation. Secondly, it automatically adjusts the tension without manual intervention after detecting a decrease in tension. Therefore, it achieves online adjustment of the synchronous belt tension without requiring power interruption, ensuring no disruption to production.

[0016] This invention employs an anti-deviation mechanism, comprising a lifting assembly, two traction assemblies, two second sliding assemblies, and several limiting rollers. When the tension of the synchronous belt is appropriately adjusted, the lifting assembly, the two traction assemblies, and the two second sliding assemblies work together to bring the limiting rollers closer together until their outer edges are within millimeters of the outer walls of the synchronous belt. Since the limiting rollers are rotatable, they do not affect the normal operation of the synchronous belt. Simultaneously, this invention prevents belt deviation caused by increased tension, ensuring the transmission effect of the synchronous belt and its stability during operation after tension adjustment, thus improving the positioning accuracy of the worktable. Furthermore, it prevents damage to the synchronous belt edges caused by friction between the synchronous belt and the retaining edge of the synchronous pulley, thereby extending the belt's service life, avoiding frequent replacements, and reducing the maintenance costs of this linear motor module.

[0017] This invention designs two traction components that, while adjusting the tension of the synchronous belt, simultaneously utilize several sliding limit rollers to achieve close-proximity and limit the movement of both sides of the synchronous belt. This avoids the problem of belt deviation that easily occurs when the tension of the synchronous belt is increased. The linkage operation of the adjustment mechanism and the anti-deviation mechanism can be achieved simply by designing an electric push rod, without the need for additional power to drive several limit rollers to operate synchronously. This helps to reduce the overall power consumption of this linear motor module and lower the adjustment cost.

[0018] This invention utilizes a sliding mechanism—comprising a worktable, a drive assembly, and a first sliding assembly—to enable the linear motor module to operate. When the module is in operation, the controller starts the stepper motor. Two synchronous pulleys are fixedly connected to one end of the lead screw and the output end of the stepper motor, respectively. These pulleys are connected via a synchronous belt. The lead screw is rotatably connected to two support plates, both of which are fixedly connected to a mounting plate, thus driving the lead screw to rotate. It's important to note that in standard linear motor modules, the power-providing motor and lead screw are typically directly connected in a straight line. In contrast, the deflection type involves the motor and lead screw arranged parallel to each other, with the motor's power being transmitted to the lead screw via a synchronous belt and pulleys. This design shortens the overall length of the module, saves installation space, adapts to more complex equipment environments, and enhances the module's practicality.

[0019] This invention designs a laser rangefinder sensor and a sensing column. The laser emitting end of the laser rangefinder sensor faces the sensing column. The linear motor module is equipped with a controller (not shown in the diagram). The laser rangefinder sensor emits laser light into the sensing column in real time to measure the precise position of the worktable on the two guide rails and feeds the detection data back to the controller. The actual position of the worktable is then compared with the preset command position inside the controller. Once a deviation is detected, the controller immediately adjusts the output power of the stepper motor to correct the movement of the worktable. This closed-loop control can eliminate sliding errors caused by mechanical friction, load changes, etc., and achieve high-precision positioning. For example, this kind of closed-loop control is required in laser cutting equipment to ensure processing quality.

[0020] This invention incorporates four buffer springs to cushion the tensioning pulley during upward adjustment, preventing it from sliding too fast or too hard, which could tilt or even damage the timing belt. This protects the timing belt while adjusting the tension, thus avoiding economic losses. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below.

[0022] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 for Figure 1 Enlarged view of point A in the image; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 4 This is a schematic diagram of the planar structure of the present invention. Figure 1 ; Figure 5 This is a three-dimensional structural schematic diagram of the adjustment mechanism of the present invention; Figure 6 This is a schematic diagram of the planar structure of the present invention. Figure 2 ; Figure 7 This is a three-dimensional structural diagram of the anti-deviation mechanism of the present invention; Figure 8 for Figure 7 Enlarged view of point B in the image; Figure 9 This is a three-dimensional structural diagram of the trapezoidal top block, lifting rod, tension spring, and two wedges of the present invention.

[0023] Explanation of reference numerals in the attached drawings: Mounting plate 10, Worktable 11, Tensioning wheel 12, Sliding frame 13, Limiting roller 14, Electric push rod 15, Swing rod 16, Positioning rod 17, Limiting plate 18, Bearing 19, Horizontal plate 20, Limiting rod 21, Base plate 22, Slider 23, Sliding bar 24, Buffer spring 25, First rotating shaft 26, Mounting rod 27, Wedge block 28, Support frame 29, Guide rod 30, Sliding column 31, Second rotating shaft 32, Adapter rod 3 3. Trapezoidal top block 34. Lifting rod 35. Return spring 36. Baffle 37. Support plate 38. Top plate 39. Adapter plate 40. Limiting strip 41. Tension spring 42. Pull plate 43. Pull rope 44. Limiting wheel 45. Connecting block 46. Transmission wheel 47. Stepper motor 48. Lead screw 49. Synchronous belt 50. Synchronous wheel 51. Adapter block 52. Guide rail 53. Slide plate 54. Support rod 55. Laser rangefinder sensor 56. Sensing column 57. Detailed Implementation

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the invention. To better illustrate the embodiments of the invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions.

[0026] This invention provides a technical solution, referring to Figures 1 to 9 As shown, a linear motor module with adjustable belt tension includes a mounting plate 10. The outer wall of the mounting plate 10 has several screw holes for mounting the linear motor module onto the equipment to be used. It also includes a sliding mechanism, an adjusting mechanism, and an anti-deviation mechanism; The sliding mechanism is located on the top of the mounting plate 10. The sliding mechanism includes a worktable 11, a drive assembly, and a first sliding assembly. The drive assembly is located on the top of the mounting plate 10, the first sliding assembly is located on the drive assembly, and the worktable 11 is fixedly located on the first sliding assembly. The adjustment mechanism is located on the top of the mounting plate 10. The adjustment mechanism includes a tension wheel 12, an electrical control component, and two sliding frames 13. The two sliding frames 13 are symmetrically arranged on the top of the mounting plate 10. The tension wheel 12 is rotatably located between the two sliding frames 13. The electrical control component is located between the top of the mounting plate 10 and the tension wheel 12. The anti-deviation mechanism is located on the top of the mounting plate 10. The anti-deviation mechanism includes a lifting assembly, two traction assemblies, two second sliding assemblies, and several limiting rollers 14. The two second sliding assemblies are symmetrically arranged on the top of the mounting plate 10. The lifting assembly is located between the two second sliding assemblies. Several limiting rollers 14 are rotatably mounted on the two second sliding assemblies respectively. The two traction assemblies are located between the lifting assembly and the two sliding frames 13.

[0027] Reference Figures 1 to 9 As shown, the electronic control assembly includes an electric push rod 15, a swing rod 16, and a positioning rod 17. A limiting plate 18 is fixedly mounted on the top of the mounting plate 10, and a bearing 19 is fixedly mounted on the top of the limiting plate 18. The positioning rod 17 is fixedly mounted on the inner ring of the bearing 19, and the swing rod 16 is fixedly mounted on the end of the positioning rod 17 away from the bearing 19. A horizontal plate 20 is fixedly mounted on the bottom outer wall of the limiting plate 18. The electric push rod 15 is hinged between the end of the horizontal plate 20 away from the limiting plate 18 and the end of the swing rod 16. This linear module is equipped with a current monitoring relay (not shown in the figure). The current monitoring relay is connected in series on the power supply line of the driver. The driver current of the stepper motor 48 is generally proportional to the output torque. During the operation of this module, if the load is constant, the fluctuation of the drive current can reflect the change in belt tension. For example, if the synchronous belt 50 is too loose, the friction decreases, and the stepper motor 48 will be affected. Stepper motor 48 requires less torque to maintain operation, so the drive current will decrease accordingly. Therefore, by monitoring the current value of the driver, the relative change in belt tension can be indirectly and in real time determined. During the operation of this linear motor module, the current monitoring relay monitors the current value of the driver of stepper motor 48 in real time. When the monitored current value is found to be lower than the preset standard current value inside the controller, the current monitoring relay sends this signal to the controller, thereby activating the electric push rod 15 to retract its output end. Since its output end is initially in the extended state, the output end of the electric push rod 15 is hinged to one end of the swing rod 16. The middle part of the swing rod 16 is rotatably connected to the limit plate 18 through the positioning rod 17 and the bearing 19. The other end of the electric push rod 15 is hinged to the horizontal plate 20, thus driving the swing rod 16 to rotate clockwise around the positioning rod 17 (refer to...). Figure 5 (As shown).

[0028] Reference Figures 1 to 9As shown, each sliding frame 13 includes two limiting rods 21, a base plate 22, a slider 23, two slide bars 24, and two buffer springs 25. The base plate 22 is fixedly mounted on the top of the mounting plate 10. The two limiting rods 21 are fixedly mounted on the top of the base plate 22. Each buffer spring 25 is sleeved on the upper outer wall of one limiting rod 21. Each slide bar 24 is slidably mounted on the outer wall of one limiting rod 21. The slider 23 is fixedly mounted between the two slide bars 24. An anti-detachment block is fixedly mounted at the top of each limiting rod 21. An anti-detachment block and a slider 24 respectively abut against both ends of a buffer spring 25. The tension wheel 12 is rotatably connected to two sliders 23 via a first rotating shaft 26. The end of the rocker arm 16 away from the electric push rod 15 is hinged to the top of one of the sliders 23. When the rocker arm 16 rotates clockwise around the positioning rod 17, since the end of the rocker arm 16 away from the electric push rod 15 is hinged to the top of one of the sliders 23, both limiting rods 21 are fixedly connected to the top of the base plate 22. Each slider 24 is slidably connected to one limiting rod 21. Next, slider 23 is fixedly connected to two sliders 24. Tensioner 12 is rotatably connected to slider 23 via first rotating shaft 26, thereby causing slider 23 and two sliders 24 to slide vertically upward a distance on the outer wall of two limiting rods 21, thereby causing tensioner 12 to slide vertically upward a distance, pressing against the bottom edge of synchronous belt 50 upward, thereby increasing the friction between synchronous belt 50 and two synchronous pulleys 51, realizing online adjustment of synchronous belt 50 tension, and thus preventing damage caused by insufficient synchronous belt 50 tension. Axial movement of the lead screw 49 affects the lifespan of the lead screw 49 nut and guide rail 53. It should be noted that during the vertical upward movement of the tension wheel 12, the two slide bars 24 slide upward, thereby contacting the two buffer springs 25, causing the two buffer springs 25 to change from the initial state to the taut state, thus buffering the upward movement of the tension wheel 12 and preventing the tension wheel 12 from sliding too fast or too hard, which could cause it to tilt or even tear the synchronous belt 50. It also protects the synchronous belt 50 while adjusting it.

[0029] Reference Figures 1 to 9As shown, each second sliding assembly includes a mounting rod 27, a wedge 28, two support frames 29, and two guide rods 30. The two support frames 29 are symmetrically arranged on the top of the mounting plate 10. Each guide rod 30 is fixedly mounted on the top of one support frame 29. The mounting rod 27 is slidably positioned between the two guide rods 30 via two sliding columns 31. Several limiting rollers 14 are rotatably connected to the mounting rod 27 via a second rotating shaft 32. The wedge 28 is fixedly mounted on the top of the mounting rod 27 via a connecting rod 33. Since each guide rod 30 is fixedly connected to the top of one support frame 29, the mounting rod 27 is slidably connected to the two guide rods 30 via two sliding columns 31. Several limiting rollers 14 are rotatably connected to the mounting rod 27 via a second rotating shaft 32. The wedge 28 is fixedly connected to the top of the mounting rod 27 via the connecting rod 33. The trapezoidal top block 34 is slidably connected to the two wedges 28 via two limiting strips 41. A fixed design is provided between the two connecting rods 33. The tension spring 42 is initially in a stretched state. Therefore, when the trapezoidal top block 34 slides vertically upward, the two wedge blocks 28 are no longer resisted by the two sides of the wedge top block. The tension spring 42 changes from a stretched state to a taut state, which in turn drives the two mounting rods 27 and several limiting rollers 14 to move closer to each other until the outer edges of the several limiting rollers 14 are close to the outer walls of the two sides of the synchronous belt 50 at a distance of millimeters. On the one hand, this can prevent the synchronous belt 50 from running off track after the tension is increased, ensuring the transmission effect of the synchronous belt 50. On the other hand, it can prevent the synchronous belt 50 from rubbing against the edge of the synchronous pulley 51, which would cause damage to the edge of the synchronous belt. This is beneficial to extending the service life of the synchronous belt 50 and reducing the maintenance cost of this linear motor module. It should be noted that the limiting rollers 14 are designed as cylindrical and rotatable structures so that the synchronous belt 50 will not be interrupted even if it occasionally comes into brief contact with the limiting rollers 14.

[0030] Reference Figures 1 to 9As shown, the lifting assembly includes a trapezoidal top block 34, a lifting rod 35, and a return spring 36. A baffle 37 is fixedly mounted on the top of the mounting plate 10, and a support plate 38 is fixedly mounted on the outer wall of the baffle 37. Two L-shaped rods are fixedly mounted on the top of the support plate 38, and a top plate 39 is fixedly mounted between the tops of the two L-shaped rods. The lifting rod 35 is slidably mounted on the outer wall of the top plate 39. The trapezoidal top block 34 is fixedly mounted on the bottom end of the lifting rod 35 via a transition plate 40. The return spring 36 is sleeved on the outer wall of the lifting rod 35. The top plate 39 and the transition plate 40 respectively abut against the two ends of the return spring 36. The trapezoidal top block 34 is slidably connected to two wedges 28 via two limiting strips 41. Next, a tension spring 42 is fixed between the two adapter rods 33. When the pull plate 43 pulls the connection end of the pull rope 44 and the connecting block 46 upward, the end of the connecting block 46 away from the pull rope 44 is fixedly connected to the trapezoidal top block 34. The top of the trapezoidal top block 34 is fixedly connected to the bottom end of the lifting rod 35 through the adapter plate 40. The lifting rod 35 is slidably connected to the top plate 39. The top plate 39 and the support plate 38 are fixedly connected to the top and bottom of the two L-shaped rods respectively. The support plate 38 is fixedly connected to the baffle 37. Under the guidance of the lifting rod 35, the trapezoidal top block 34 slides vertically upward. During this process, the return spring 36 changes from the initial state to the tense state.

[0031] Reference Figures 1 to 9 As shown, each traction assembly includes a pull plate 43, a pull rope 44, and two limiting wheels 45. The pull plate 43 is fixedly mounted on the side wall of one of the slide bars 24. Two L-shaped brackets are fixedly mounted on the top of the mounting plate 10. The two limiting wheels 45 are rotatably mounted on the L-shaped brackets and L-shaped rods, respectively. Two connecting blocks 46 are fixedly mounted on the top of the trapezoidal top block 34. The pull rope 44 is fixedly mounted between the pull plate 43 and one of the connecting blocks 46. The tensioning wheel 12 slides vertically upwards for a certain distance to the bottom edge of the synchronous belt 50. While pressing upwards, the pull plate 43 is fixedly connected to the side wall of one of the slide bars 24, the mounting plate 10 is fixedly connected to the two L-shaped frames, the two limiting wheels 45 are rotatably connected to the L-shaped frame and the L-shaped rod respectively, the top of the trapezoidal top block 34 is fixedly connected to the two connecting blocks 46, and the pull plate 43 and one of the connecting blocks 46 are fixedly connected to the two ends of the pull rope 44 respectively. Under the limiting action of the two limiting wheels 45, the pull plate 43 drives the connection end of the pull rope 44 and the connecting block 46 to be pulled upwards.

[0032] Reference Figures 1 to 9 As shown, four drive wheels 47 are rotatably arranged between the support plate 38 and the support frame 29. The outer wall of each pull rope 44 is in contact with the outer edge of every two drive wheels 47 located on the same side. The four drive wheels 47 cooperate in pairs, and every two drive wheels 47 located on the same side limit and guide one pull rope 44 to ensure stable operation when the pull rope 44 pulls the trapezoidal top block 34, prevent the pull rope 44 from jumping off, and improve the lifting stability of the trapezoidal top block 34.

[0033] Reference Figures 1 to 9 As shown, the drive assembly includes a stepper motor 48, a lead screw 49, a synchronous belt 50, and two synchronous pulleys 51. Two support plates are fixedly mounted on the top of the mounting plate 10. The lead screw 49 is rotatably mounted between the tops of the two support plates. The stepper motor 48 is fixedly mounted on the top of the mounting plate 10. The two synchronous pulleys 51 are respectively fixedly mounted on one end of the lead screw 49 and the output end of the stepper motor 48. The synchronous belt 50 is sleeved between the two synchronous pulleys 51. When this linear motor module is working, the stepper motor 48 is started by the controller. Since the two synchronous pulleys 51 are fixedly connected to one end of the lead screw 49 and the output end of the stepper motor 48, respectively, and the two synchronous pulleys 51 are sleeved by the synchronous belt 50, the lead screw 49 is rotatably connected to the two support plates. Both support plates are fixedly connected to the mounting plate 10, thereby driving the lead screw 49 to rotate. It should be noted that in a standard linear motor module, the motor providing power is usually directly connected to the lead screw 49 in a straight line. The "turning point" type refers to a configuration where the motor and lead screw 49 are arranged parallel to each other. Power from the motor is transmitted to the lead screw 49 via a transmission mechanism such as a synchronous belt 50 and a synchronous pulley 51. This shortens the overall length of the module, saves installation space, adapts to more complex equipment environments, and enhances the module's practicality.

[0034] Reference Figures 1 to 9 As shown, the first sliding assembly includes a transition block 52, two guide rails 53, two slide plates 54, and four support rods 55. The two guide rails 53 are symmetrically arranged on the top of the mounting plate 10. Each slide plate 54 is slidably mounted on the top of one guide rail 53. The four support rods 55 are respectively fixedly mounted on the top of the two slide plates 54. The bottom of the worktable 11 is fixedly connected to the top of the four support rods 55. The transition block 52 is fixedly mounted on the bottom of the worktable 11 and is threadedly connected to the lead screw 49. When the lead screw 49 rotates, since each slide plate 54 is slidably connected to one guide rail 53, and the four support rods 55 are respectively fixedly connected to the two slide plates 54, the bottom of the worktable 11 is fixedly connected to the top of the four support rods 55, and the transition block 52 is fixedly connected to the bottom of the worktable 11 and threadedly connected to the lead screw 49, the worktable 11 is driven to slide linearly. Existing machining actuators are installed on the top of the worktable 11 for machining production.

[0035] Reference Figures 1 to 9As shown, a laser rangefinder 56 is fixedly installed at the bottom of the worktable 11, and a sensing column 57 is fixedly installed on the top of one of the support plates away from the worktable 11. The laser emitting end of the laser rangefinder 56 faces the sensing column 57. This linear motor module is equipped with a controller (not shown in the figure). The laser rangefinder 56 emits laser light to the sensing column 57 in real time to measure the precise position of the worktable 11 on the two guide rails 53 and feeds the detection data back to the controller. The actual position of the worktable 11 is then compared with the preset command position inside the controller. Once a deviation is detected, the controller will immediately adjust the output power of the stepper motor 48 to correct the movement of the worktable 11. Through this closed-loop control, the sliding error caused by mechanical friction, load changes, etc., can be eliminated to achieve high-precision positioning. For example, such closed-loop control is required in laser cutting equipment to ensure processing quality.

[0036] The working principle of this invention is as follows: When this linear motor module is working, the stepper motor 48 is started by the controller. Since the two synchronous pulleys 51 are fixedly connected to one end of the lead screw 49 and the output end of the stepper motor 48 respectively, and the two synchronous pulleys 51 are sleeved by the synchronous belt 50, the lead screw 49 is rotatably connected to the two support plates, and the two support plates are fixedly connected to the mounting plate 10, thereby driving the lead screw 49 to rotate. Since each slide plate 54 is slidably connected to a guide rail 53, the four support rods 55 are fixedly connected to the two slide plates 54 respectively, the bottom of the worktable 11 is fixedly connected to the top of the four support rods 55, the adapter block 52 is fixedly connected to the bottom of the worktable 11, and the adapter block 52 is threadedly connected to the lead screw 49, thereby driving the worktable 11 to slide linearly. The existing processing actuators are installed on the top of the worktable 11 for processing and production.

[0037] It's important to note that in a standard linear motor module, the power-providing motor is typically directly connected to the lead screw 49 in a straight line. In contrast, the deflection type means the motor and lead screw 49 are arranged parallel to each other, with the motor's power being transmitted to the lead screw 49 via a transmission mechanism such as a synchronous belt 50 and a synchronous pulley 51. This shortens the overall length of the module, saves installation space, adapts to more complex equipment environments, and enhances the module's practicality.

[0038] This linear motor module is equipped with a controller (not shown in the diagram). It uses a laser rangefinder 56 to emit a laser in real time to the sensing column 57 to measure the precise position of the worktable 11 on the two guide rails 53 and feeds the detection data back to the controller. The actual position of the worktable 11 is then compared with the preset command position inside the controller. If a deviation is detected, the controller will immediately adjust the output power of the stepper motor 48 to correct the movement of the worktable 11. This closed-loop control can eliminate sliding errors caused by mechanical friction, load changes, etc., and achieve high-precision positioning. For example, this kind of closed-loop control is required in laser cutting equipment to ensure processing quality.

[0039] This linear motor module is equipped with a current monitoring relay (not shown in the diagram). The current monitoring relay is connected in series on the power supply line of the driver. The driver current of the stepper motor 48 is generally proportional to its output torque. During the operation of this module, if the load is constant, fluctuations in the drive current can reflect changes in belt tension. For example, if the synchronous belt 50 is too loose, friction decreases, and the stepper motor 48 needs to output less torque to maintain operation, thus reducing the drive current accordingly. Therefore, by monitoring the driver's current value, the relative change in belt tension can be indirectly and in real-time determined during the operation of this linear motor module. In the middle, the current monitoring relay monitors the current value of the driver of the stepper motor 48 in real time. When it finds that the monitored current value is lower than the preset standard current value inside the controller, the current monitoring relay sends this signal to the controller, thereby activating the electric push rod 15 to retract its output end. Since its output end is initially in the extended state, the output end of the electric push rod 15 is hinged to one end of the swing rod 16. The middle part of the swing rod 16 is rotatably connected to the limit plate 18 through the positioning rod 17 and the bearing 19. The other end of the electric push rod 15 is hinged to the horizontal plate 20, thus driving the swing rod 16 to rotate clockwise around the positioning rod 17.

[0040] When the swing arm 16 rotates clockwise around the positioning rod 17, the end of the swing arm 16 away from the electric push rod 15 is hinged to the top of one of the sliders 23. Both limiting rods 21 are fixedly connected to the top of the base plate 22, and each slide bar 24 is slidably connected to one limiting rod 21. The slider 23 is fixedly connected to the two slide bars 24. The tension wheel 12 is rotatably connected to the two sliders 23 through the first rotating shaft 26, thereby causing the sliders 23 and the two slide bars 24 to slide vertically upward a distance on the outer wall of the two limiting rods 21, thereby causing the tension wheel 12 to slide vertically upward a distance to press against the bottom edge of the synchronous belt 50, thereby increasing the tension between the synchronous belt 50 and the two sliding bars 24. The friction of the synchronous pulley 51 enables online adjustment of the tension of the synchronous belt 50, thereby preventing the axial movement of the lead screw 49 due to insufficient tension of the synchronous belt 50, which could affect the lifespan of the lead screw 49 nut and guide rail 53. It should be noted that during the vertical upward movement of the tensioning pulley 12, the two slide bars 24 slide upward, thereby contacting the two buffer springs 25, causing the two buffer springs 25 to change from the initial state to the taut state, thus buffering the upward movement of the tensioning pulley 12 and preventing the tensioning pulley 12 from sliding too fast or too hard, which could cause the synchronous belt 50 to tilt or even be torn. It also protects the synchronous belt 50 while adjusting the tension.

[0041] As the tensioning wheel 12 slides vertically upwards a certain distance and presses against the bottom edge of the synchronous belt 50, the pull plate 43 is fixedly connected to the side wall of one of the slide bars 24, the mounting plate 10 is fixedly connected to the two L-shaped frames, the two limiting wheels 45 are rotatably connected to the L-shaped frame and the L-shaped rod respectively, the top of the trapezoidal top block 34 is fixedly connected to the two connecting blocks 46, and the pull plate 43 and one of the connecting blocks 46 are fixedly connected to the two ends of the pull rope 44 respectively. Under the limiting action of the two limiting wheels 45, the pull plate 43 drives the connection end of the pull rope 44 and the connecting block 46 to be pulled upwards.

[0042] When the pull plate 43 pulls the connecting end of the pull rope 44 and the connecting block 46 upward, the end of the connecting block 46 away from the pull rope 44 is fixedly connected to the trapezoidal top block 34. The top of the trapezoidal top block 34 is fixedly connected to the bottom of the lifting rod 35 through the adapter plate 40. The lifting rod 35 is slidably connected to the top plate 39. The top plate 39 and the support plate 38 are fixedly connected to the top and bottom of the two L-shaped rods, respectively. The support plate 38 is fixedly connected to the baffle 37. Under the guidance of the lifting rod 35, the trapezoidal top block 34 slides vertically upward. During this process, the return spring 36 changes from the initial state to the taut state.

[0043] Since each guide rod 30 is fixedly connected to the top of a support frame 29, the mounting rod 27 is slidably connected to the two guide rods 30 via two sliding columns 31. Several limiting rollers 14 are rotatably connected to the mounting rod 27 via a second rotating shaft 32. The wedge block 28 is fixedly connected to the top of the mounting rod 27 via a connecting rod 33. The trapezoidal top block 34 is slidably connected to the two wedge blocks 28 via two limiting strips 41. A tension spring 42 is fixedly designed between the two connecting rods 33, and the tension spring 42 is initially in a stretched state. Therefore, when the trapezoidal top block 34 slides vertically upward, the two wedge blocks 28 are no longer subject to the resistance of the two sides of the wedge top block. When the tension spring 42 comes into contact with the synchronous belt, it changes from a stretched state to a taut state, which in turn drives the two mounting rods 27 and several limiting rollers 14 to move closer to each other until the outer edges of the limiting rollers 14 are close to the outer walls of the synchronous belt 50 at a distance of millimeters. On the one hand, this can prevent the synchronous belt 50 from running off track after the tension is increased, ensuring the transmission effect of the synchronous belt 50. On the other hand, it can prevent the synchronous belt 50 from rubbing against the edge of the synchronous pulley 51, which would cause damage to the edge of the synchronous belt. This helps to extend the service life of the synchronous belt 50 and reduce the maintenance cost of this linear motor module.

[0044] The four drive wheels 47 work in pairs, with each pair of drive wheels 47 on the same side limiting and guiding a pull rope 44 to ensure stable operation when the pull rope 44 pulls the trapezoidal top block 34 and prevent the pull rope 44 from jumping off, thereby improving the lifting stability of the trapezoidal top block 34.

Claims

1. A linear motor module with adjustable belt tension, comprising a mounting plate (10), characterized in that: It also includes a sliding mechanism, an adjusting mechanism, and an anti-deviation mechanism; The sliding mechanism is located on the top of the mounting plate (10). The sliding mechanism includes a worktable (11), a drive assembly and a first sliding assembly. The drive assembly is located on the top of the mounting plate (10), the first sliding assembly is located on the drive assembly, and the worktable (11) is fixedly located on the first sliding assembly. The adjustment mechanism is located on the top of the mounting plate (10). The adjustment mechanism includes a tension wheel (12), an electrical control component, and two sliding frames (13). The two sliding frames (13) are symmetrically arranged on the top of the mounting plate (10). The tension wheel (12) is rotatably located between the two sliding frames (13). The electrical control component is located between the top of the mounting plate (10) and the tension wheel (12). The anti-deviation mechanism is located on the top of the mounting plate (10). The anti-deviation mechanism includes a lifting assembly, two traction assemblies, two second sliding assemblies and several limiting rollers (14). The two second sliding assemblies are symmetrically arranged on the top of the mounting plate (10). The lifting assembly is located between the two second sliding assemblies. Several limiting rollers (14) are rotatably arranged on the two second sliding assemblies respectively. The two traction assemblies are located between the lifting assembly and the two sliding frames (13).

2. The linear motor module with adjustable belt tension according to claim 1, characterized in that: The electrical control assembly includes an electric push rod (15), a swing rod (16), and a positioning rod (17). A limiting plate (18) is fixedly provided on the top of the mounting plate (10). A bearing (19) is fixedly provided on the top of the limiting plate (18). The positioning rod (17) is fixedly provided on the inner ring of the bearing (19). The swing rod (16) is fixedly provided on the end of the positioning rod (17) away from the bearing (19). A horizontal plate (20) is fixedly provided on the bottom outer wall of the limiting plate (18). The electric push rod (15) is hinged between the end of the horizontal plate (20) away from the limiting plate (18) and the end of the swing rod (16).

3. A linear motor module with adjustable belt tension according to claim 2, characterized in that: Each sliding frame (13) includes two limiting rods (21), a base plate (22), a slider (23), two slide bars (24), and two buffer springs (25). The base plate (22) is fixed on the top of the mounting plate (10). The two limiting rods (21) are fixed on the top of the base plate (22). Each buffer spring (25) is sleeved on the upper half of the outer wall of a limiting rod (21). Each slide bar (24) is slidably mounted on the outer wall of a limiting rod (21). The slider (23) is fixed between the two slide bars (24). Each limiting rod (21) has an anti-detachment block fixed at its top. Each anti-detachment block and a slide bar (24) respectively abut against the two ends of a buffer spring (25). The tension wheel (12) is rotatably connected to the two sliders (23) through the first rotating shaft (26). The end of the swing rod (16) away from the electric push rod (15) is hinged to the top of one of the sliders (23).

4. A linear motor module with adjustable belt tension according to claim 3, characterized in that: Each second sliding assembly includes a mounting rod (27), a wedge (28), two support frames (29) and two guide rods (30). The two support frames (29) are symmetrically arranged on the top of the mounting plate (10). Each guide rod (30) is fixedly mounted on the top of one support frame (29). The mounting rod (27) is slidably mounted between the two guide rods (30) via two sliding columns (31). Several limiting rollers (14) are rotatably connected to the mounting rod (27) via a second rotating shaft (32). The wedge (28) is fixedly mounted on the top of the mounting rod (27) via an adapter rod (33).

5. A linear motor module with adjustable belt tension according to claim 4, characterized in that: The lifting assembly includes a trapezoidal top block (34), a lifting rod (35), and a return spring (36). A baffle (37) is fixedly provided on the top of the mounting plate (10). A support plate (38) is fixedly provided on the outer wall of the baffle (37). Two L-shaped rods are fixedly provided on the top of the support plate (38). A top plate (39) is fixedly provided between the tops of the two L-shaped rods. The lifting rod (35) is slidably provided on the outer wall of the top plate (39). The trapezoidal top block (34) is fixedly provided on the bottom end of the lifting rod (35) through a transition plate (40). The return spring (36) is sleeved on the outer wall of the lifting rod (35). The top plate (39) and the transition plate (40) respectively abut against the two ends of the return spring (36). The trapezoidal top block (34) is slidably connected to two wedges (28) through two limit strips (41). A tension spring (42) is fixedly provided between the two transition rods (33).

6. A linear motor module with adjustable belt tension according to claim 5, characterized in that: Each traction assembly includes a pull plate (43), a pull rope (44), and two limiting wheels (45). The pull plate (43) is fixedly mounted on the side wall of one of the slide bars (24). Two L-shaped frames are fixedly mounted on the top of the mounting plate (10). The two limiting wheels (45) are rotatably mounted on the L-shaped frames and L-shaped rods, respectively. Two connecting blocks (46) are fixedly mounted on the top of the trapezoidal top block (34). The pull rope (44) is fixedly mounted between the pull plate (43) and one of the connecting blocks (46).

7. A linear motor module with adjustable belt tension according to claim 6, characterized in that: Four drive wheels (47) are rotatably arranged between the support plate (38) and the support frame (29), and the outer wall of each pull rope (44) is in contact with the outer edge of each pair of drive wheels (47) located on the same side.

8. A linear motor module with adjustable belt tension according to claim 7, characterized in that: The drive assembly includes a stepper motor (48), a lead screw (49), a synchronous belt (50), and two synchronous pulleys (51). Two support plates are fixedly provided on the top of the mounting plate (10). The lead screw (49) is rotatably disposed between the tops of the two support plates. The stepper motor (48) is fixedly disposed on the top of the mounting plate (10). The two synchronous pulleys (51) are respectively fixed on one end of the lead screw (49) and the output end of the stepper motor (48). The synchronous belt (50) is sleeved between the two synchronous pulleys (51).

9. A linear motor module with adjustable belt tension according to claim 8, characterized in that: The first sliding assembly includes a transition block (52), two guide rails (53), two slide plates (54), and four support rods (55). The two guide rails (53) are symmetrically arranged on the top of the mounting plate (10). Each slide plate (54) is slidably arranged on the top of one guide rail (53). The four support rods (55) are respectively fixed on the top of the two slide plates (54). The bottom of the worktable (11) is fixedly connected to the top of the four support rods (55). The transition block (52) is fixedly arranged on the bottom of the worktable (11). The transition block (52) is threadedly connected to the lead screw (49).

10. A linear motor module with adjustable belt tension according to claim 9, characterized in that: A laser rangefinder (56) is fixedly installed at the bottom of the workbench (11), and a sensing column (57) is fixedly installed on the top of a support plate away from the workbench (11), with the laser emitting end of the laser rangefinder (56) facing the sensing column (57).

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