Double-shaft linear transmission module

Abstract

This invention belongs to the field of transmission equipment technology, and particularly relates to a dual-axis linear transmission module. The dual-axis linear transmission module includes: a base; optical shafts, the axis of which is parallel to the length direction of the base, and a pair of optical shafts arranged opposite each other along the width direction of the base; mounting plates, which are mounted on the base and used to mount and fix the optical shafts, with multiple mounting plates arranged sequentially along the length direction of the base; and a slider, on which rollers are provided, a pair of rollers symmetrically arranged along the width direction of the base, and multiple pairs of rollers arranged along the length direction of the base. The outer peripheral wall of each roller has a limiting groove, and a pair of rollers arranged opposite each other along the width direction of the base are slidably connected to a pair of optical shafts through the limiting groove. This invention, by adjusting the center distance of the optical shafts, can meet the needs of the dual-axis linear transmission module in different scenarios within a certain range, improving the product's versatility and effectively reducing enterprise production costs.

Description

Technical Field

[0001] This invention belongs to the field of transmission equipment technology, and particularly relates to a dual-axis linear transmission module. Background Technology

[0002] The dual-axis linear drive module, also known as a dual-axis linear module or roller guide module, is a linear motion unit composed of dual optical axis guides and roller sliders. Its core feature is that two hard chrome optical axes, which have undergone high-frequency quenching and mirror polishing, are inlaid parallel on both sides of an aluminum profile base. The slider contains a set of roller bearings, with the outer rings of the bearings rolling directly along the optical axes, achieving high-speed, low-friction, and backlash-free linear reciprocating motion.

[0003] In a dual-axis linear drive module, the center distance between the two optical axes is one of the key dimensions determining the performance of the entire system. The center distance directly affects the following six aspects: 1. stiffness; 2. load; 3. accuracy; 4. lifespan; 5. speed; 6. cost.

[0004] In the existing technology, since the optical axis center distance of the dual-axis linear transmission module is not adjustable, different models of dual-axis linear transmission modules (with different optical axis center distances) are required to meet different needs (such as stiffness, load, accuracy, etc.). Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a dual-axis linear transmission module that can adjust the center distance of the optical axis, thereby increasing the applicable scenarios of the dual-axis linear transmission module.

[0006] This invention provides a dual-axis linear transmission module, comprising:

[0007] Base;

[0008] The optical axis is parallel to the length of the base, and a pair of optical axes are set opposite each other along the width of the base;

[0009] Mounting plates are set on the base and are used to mount and fix the optical axis. Multiple mounting plates are arranged sequentially along the length of the base.

[0010] The slider is equipped with rollers. A pair of rollers are symmetrically arranged along the width of the base, and multiple pairs of rollers are arranged along the length of the base. The outer peripheral wall of the rollers is provided with a limiting groove. A pair of rollers arranged opposite each other in the width of the base are slidably connected to a pair of optical axes through the limiting grooves.

[0011] The spacing between the two optical axes is adjustable.

[0012] Optionally, the mounting plate is provided with mounting holes for mounting and fixing the optical axis. At least three mounting holes are arranged sequentially along the width direction of the base on the same mounting plate, and the optical axis can be detachably installed in the mounting holes.

[0013] Optional, the mounting plate includes:

[0014] The first plate and the second plate are arranged sequentially along the height direction of the base. The second plate is fixedly set on the base. The mounting holes include a first half hole and a second half hole arranged opposite each other in the vertical direction. The first half hole is set on the first plate and the second half hole is set on the second plate.

[0015] A connector is used to connect the first plate and the second plate.

[0016] Optionally, the mounting plate is also provided with a positioning mechanism, which is used to position the relative positions of the first plate and the second plate.

[0017] Optional, the positioning mechanism includes:

[0018] The positioning block and positioning groove are respectively set on the first plate and the second plate. When the first plate and the second plate are in the assembly state, the positioning block is inserted into the positioning groove.

[0019] Optionally, a rotating mechanism may also be included, with at least one optical axis equipped with a rotating mechanism, which drives the optical axis to rotate and repair the bent optical axis.

[0020] Optionally, the rotating mechanism includes:

[0021] A support plate is mounted on a base. The support plate has through holes that extend through both ends of the support plate along the length of the base.

[0022] The sleeve is a hollow structure with openings at both ends, and one end of the sleeve is fixedly mounted on the support plate.

[0023] A rotating shaft, one end of which extends into the sleeve, and the other end of which is fixedly connected to the optical axis. The rotating shaft is fixed relative to the sleeve in the axial direction, and can rotate relative to the sleeve in the circumferential direction.

[0024] The movable shaft has one end extending into the sleeve and the other end inserted into and passing through the through hole. The movable shaft is fixed relative to the through hole in the circumferential direction and can move relative to the sleeve in the axial direction.

[0025] The first elastic element pushes the moving axis to move away from the sleeve.

[0026] The conversion component moves the moving axis and drives the rotating axis to rotate.

[0027] Optionally, the conversion components include:

[0028] The guide post and guide groove are respectively set on the rotating shaft and the moving shaft. The moving shaft moves to drive the guide post to slide in the guide groove, and the sliding of the guide post in the guide groove drives the rotating shaft to rotate.

[0029] Optionally, the guide groove includes:

[0030] The first guide groove is arranged along the axial direction, and there are multiple first guide grooves, which are evenly distributed along the circumferential direction.

[0031] The second guide groove has its two ends connected to two adjacent first guide grooves respectively. The second guide groove includes an input section, a guide section and an output section. The input section is used to guide the guide post from the first guide groove into the second guide groove. The guide section is used to guide the guide post from the guide section to the output section. The output section is used to guide the guide post to move into the next first guide groove.

[0032] Optionally, one end of the rotating shaft inserted into the sleeve is provided with an insertion hole, a guide groove is provided on the inner wall of the insertion hole, and a guide post is provided at one end of the moving shaft inserted into the insertion hole. The number of guide posts is the same as the number of the first guide groove.

[0033] Optionally, a transmission mechanism may also be included, the number of which is the same as the number of rotating mechanisms. The transmission mechanism transmits the power for the movement of the slider to the corresponding rotating mechanism.

[0034] Optionally, the transmission mechanism includes:

[0035] The inserter is fixedly mounted on the slider.

[0036] The sleeve is a hollow structure with one end sealed. The outer wall of the sleeve is provided with strip grooves that communicate with the inner cavity of the sleeve. There are multiple strip grooves.

[0037] The telescopic rod can slide inside the sleeve along the width direction of the base. One end of the telescopic rod extends out of the opening end of the sleeve. A connecting rod is connected to the telescopic rod. The connecting rod extends out of the sleeve along the strip groove. A lever is provided at the end of the connecting rod away from the telescopic rod. The lever is positioned opposite to the moving shaft in the width direction of the base. There are multiple connecting rods and levers connected to each other.

[0038] The second elastic element pushes the telescopic rod to move away from the sleeve.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] This invention, by adjusting the center distance of the optical axis, can meet the needs of dual-axis linear transmission modules in different scenarios within a certain range, thereby improving the versatility of the product and effectively reducing the production costs of enterprises. Attached Figure Description

[0041] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0042] Figure 1 This is a perspective view of the present invention;

[0043] Figure 2 For the present invention Figure 1 Enlarged view of area A;

[0044] Figure 3 This is a perspective view of the base of the present invention;

[0045] Figure 4 For the present invention Figure 3 Enlarged view of area B;

[0046] Figure 5 This is a cross-sectional view of the mounting plate of the present invention;

[0047] Figure 6 This is the front view of the slider of the present invention;

[0048] Figure 7 This is a perspective view of the rotating mechanism of the present invention;

[0049] Figure 8 This is an exploded view of the rotating mechanism of the present invention;

[0050] Figure 9 This is a cross-sectional view of the rotating shaft of the present invention;

[0051] Figure 10 This is a perspective view of the telescopic rod of the present invention;

[0052] Figure 11 This is a cross-sectional view of the sleeve of the present invention.

[0053] In the diagram: 1. Optical axis; 2. Mounting plate; 21. Mounting hole; 211. First half-hole; 212. Second half-hole; 22. First plate; 23. Second plate; 24. Connector; 25. Positioning mechanism; 251. Positioning block; 252. Positioning groove; 3. Slider; 31. Roller; 311. Limiting groove; 4. Rotation mechanism; 41. Support plate; 411. Through hole; 42. Sleeve; 421. Limiting flange; 43. Rotating shaft; 431. Insertion hole; 44. Moving shaft 45. Conversion component; 451. Guide post; 452. Guide groove; 4521. First guide groove; 4522. Second guide groove; 45221. Input section; 45222. Guide section; 45223. Output section; 46. First elastic element; 5. Transmission mechanism; 51. Insert knife; 511. Guide surface; 52. Sleeve; 521. Strip groove; 53. Telescopic rod; 531. Connecting rod; 532. Pulley; 533. Trigger surface; 54. Second elastic element; 6. Base. Detailed Implementation

[0054] 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 embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0055] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0056] Example 1

[0057] Please refer to Figure 1 , Figure 3 , Figure 6This invention provides a dual-axis linear transmission module, which has a base 6. Multiple mounting plates 2 are arranged on the upper surface of the base 6 along the front-to-back direction. Mounting holes 21 are provided on the mounting plates 2. An optical axis 1 is installed in the multiple mounting holes 21 arranged sequentially along the front-to-back direction. A pair of optical axes 1 are arranged along the left-to-right direction. The dual-axis linear transmission module also includes a slider 3. The slider 3 has slots on its left and right sides. Rollers 31 are installed in the slots. Bearings are provided inside the rollers 31. A pin is fixedly provided on the inner ring of the bearing. The pin is arranged in the vertical direction, and the upper and lower ends of the pin are fixed to the upper and lower walls of the slots, respectively. A limiting groove 311 is provided on the outer wall of the rollers 31. The left roller 31 is slidably connected to the left optical axis 1 through the limiting groove 311, and the right roller 31 is slidably connected to the right optical axis 1 through the limiting groove 311.

[0058] refer to Figure 5 There are at least three mounting holes 21 on a mounting plate 2. Multiple mounting holes 21 are arranged sequentially in the left and right direction. When it is necessary to adjust the center distance of the optical axis 1, one of the optical axes 1 can be moved to achieve this (obviously, the center distance of a pair of optical axes 1 can also be adjusted by moving both optical axes 1 at the same time).

[0059] It should be noted that the pin can be made of an eccentric nut, which allows the tightness of the slider 3 (referring to the degree of contact between the limiting groove 311 and the optical axis 1) to be adjusted without disassembly, thus restoring the running accuracy.

[0060] It should be noted that the reference Figure 6 The number of rollers 31 on the left or right side of slider 3 is generally two or three. In this invention, two rollers 31 are used on one side.

[0061] It should be noted that the attached diagram uses a ball screw drive method (in this solution, a coupling is set at one end of the screw, and the coupling is connected to the power source). In actual use, a synchronous belt or linear motor can also be used to drive the slider 3 to move.

[0062] It should be noted that the reference Figure 1 , Figure 3 The length direction of the base 6 is the front-to-back direction (where the end of the lead screw with the coupling is the front), the width direction of the base 6 is the left-to-right direction, and the height direction of the base 6 is the up-to-down direction.

[0063] It should be noted that the reference Figure 1 , Figure 3The number of mounting plates 2 is two or more. In this scheme, the number of mounting plates 2 is three. A slider 3 is set between the second mounting plate 2 (from front to back) and the third mounting plate 2 (from front to back). A coupling connected to the lead screw is set between the first mounting plate 2 (from front to back) and the second mounting plate 2 (from front to back).

[0064] As a preferred option, refer to Figure 5 To facilitate the assembly and disassembly of the optical axis 1, the mounting plate 2 is designed as a split type, that is, the mounting plate 2 includes a first plate 22 and a second plate 23 arranged vertically opposite each other. The second plate 23 is connected to the base 6, and the first plate 22 is connected to the upper part of the second plate 23 through a connector 24. Correspondingly, the mounting hole 21 is divided into a first half-hole 211 and a second half-hole 212 by the first plate 22 and the second plate 23. The first half-hole 211 is located on the lower end face of the first plate 22, and the second half-hole 212 is located on the upper end face of the second plate 23.

[0065] It should be noted that the center angles of the first half-hole 211 and the second half-hole 212 should both be less than or equal to 180 degrees.

[0066] It should be noted that the connector 24 can be implemented using bolts, pins, locks, or other methods.

[0067] As a further preferred option, refer to Figure 5 A positioning mechanism 25 is provided, which is located between the first plate 22 and the second plate 23. The positioning mechanism 25 ensures the coaxiality of the first half hole 211 and the second half hole 212 after the first plate 22 and the second plate 23 are assembled.

[0068] In this invention, reference Figure 5 The positioning mechanism 25 uses a positioning block 251 and a positioning groove 252. The positioning block 251 is set on the second plate 23, and the positioning groove 252 is set on the first plate 22. During assembly, the positioning block 251 is inserted into the positioning groove 252 to achieve positioning.

[0069] It should be noted that the shapes of the positioning block 251 and the positioning groove 252 are not limited, but semi-circular is preferred.

[0070] It should be noted that the number of positioning blocks 251 and positioning slots 252 can be one or more pairs.

[0071] It should be noted that the positioning block 251 can also be set on the first plate 22, and the positioning groove 252 can be set on the second plate 23.

[0072] It should be noted that the reference Figure 1 , Figure 3To further ensure the running accuracy of the slider 3, a pair of support ribs 61 can be set on the base 6. The support ribs 61 are slidably connected to the bottom surface of the slider 3, thereby reducing the pressure of the load and the slider's own weight on the roller 31 in the vertical direction.

[0073] Example 2

[0074] During long-term use, the optical axis 1 of the dual-axis linear drive module may bend and deform due to its own weight, thermal expansion and contraction caused by the environment, lack of maintenance, or overload. This means that the straightness of the optical axis 1 exceeds a predetermined threshold, which is an indicator determined according to the precision level. For example, precision grade g6 requires the straightness of the optical axis 1 to be less than or equal to 10µm. After the optical axis 1 is bent and deformed, the dual-axis linear module will experience the following problems:

[0075] 1. The movement trajectory deviates. The bent optical axis 1 causes the slider 3 to fluctuate during its forward and backward movement (i.e., it moves in the left and right directions). This causes the movement trajectory of the slider 3 to form a "fluctuation" (the trajectory formed by the combined movement of the slider 3 in the forward and backward directions and the movement of the slider 3 in the left and right directions), which affects the running accuracy (the maximum allowable deviation between the actual trajectory and the ideal straight line when the slider 3 moves in a straight line along the guide rail).

[0076] Second, the load capacity is reduced and the local deflection of the optical shaft 1 increases the peak contact stress between the roller 31 and the optical shaft 1. Under heavy load conditions, the bearing of the roller 31 may peel off prematurely.

[0077] Third, noise and vibration increase. The roller 31 rolling on the curved optical axis 1 will generate periodic impacts and be accompanied by low-frequency vibrations, which will affect the stability of the whole machine.

[0078] Fourth, the life of the bearing of roller 31 is shortened, and additional radial force is generated at the bending point, which leads to a decrease in the life of the bearing of roller 31.

[0079] To reduce the probability of the above situation occurring, further improvements were made based on Example 1.

[0080] refer to Figure 1 , Figure 7 , Figure 8 , Figure 9A rotating mechanism 4 is provided, which repairs the optical axis 1 by rotating it. The rotating mechanism 4 is connected to the rear end of the optical axis 1. The rotating mechanism 4 includes a support plate 41, which is fixedly mounted on the base 6. The support plate 41 has a through hole 411 that penetrates the support plate 41 in the front-to-back direction. The rotating mechanism 4 also includes a sleeve 42, the cavity inside of which extends to both ends of the sleeve 42 in the front-to-back direction. The rear end of the sleeve 42 is fixed to the support plate 41. The rotating mechanism 4 also includes a rotating shaft 43, the front end of which is connected to the rear end of the optical axis 1, and the two are fixed relative to each other in the circumferential direction. The rear end of the rotating shaft 43 is inserted into the sleeve 42, and the rotating shaft 43 and the sleeve 42 are fixed relative to each other in the front-back direction. The rotating mechanism 4 also includes a movable shaft 44, the front end of which is located in the sleeve 42, and the rear end of which extends out of the rear end face of the support plate 41 along the through hole 411. The movable shaft 44 is movable in the front-back direction and is restricted to rotate around its axis. The rotating mechanism 4 also includes a first elastic element 46, which pushes the movable shaft 44 to move backward. The rotating mechanism 4 also includes a conversion component 45, which can convert the movement of the movable shaft 44 in the front-back direction into the rotational movement of the rotating shaft 43.

[0081] It should be noted that multiple bearings are provided on the outer wall of the optical axis 1, and the bearings are installed at the mounting hole 21 to reduce wear and resistance during the rotation of the optical axis 1.

[0082] Specifically, refer to Figure 7 , Figure 8 The outer wall of the sleeve 42 is provided with a flange, which is bolted to the front end face of the support plate 41.

[0083] Specifically, refer to Figure 7 , Figure 8 , Figure 9 The scheme for fixing the rotating shaft 43 and the sleeve 42 relative to each other in the front-back direction is as follows: a recessed limiting flange 421 is provided at the front end of the sleeve 42, the rotating shaft 43 is set as a stepped shaft, the large shaft (referring to the shaft with a larger diameter) of the rotating shaft is located inside the sleeve 42, the stepped surface of the rotating shaft 43 is in contact with the rear end surface of the limiting flange 421, and the rear end surface of the rotating shaft 43 is in contact with the front end surface of the support plate 41, thereby fixing the rotating shaft 43 in the front-back direction.

[0084] It should be noted that the relative fixation of the rotating shaft 43 and the sleeve 42 in the front-back direction can also be achieved by using a limiting pin (not shown in the figure). That is, a threaded hole is provided on the outer peripheral wall of the sleeve 42, and an annular groove is provided on the outer peripheral wall of the rotating shaft 43. A round-headed nut is connected in the threaded hole, and the ball head of the round-headed nut is inserted into the annular groove on the outer wall of the rotating shaft 43, so that the relative fixation of the two in the front-back direction (i.e., axial direction) can be achieved.

[0085] Specifically, refer to Figure 8 The movable shaft 44 is a stepped shaft, with its main shaft located inside the sleeve 42 and its small shaft slidably connected to the through hole 411. In this scheme, the rotation of the small shaft is restricted by the through hole 411.

[0086] It should be noted that the cross-sections of the through hole 411 and the small shaft of the moving shaft 44 can be triangular, quadrilateral, pentagonal, hexagonal, or other shapes that can restrict the rotation of the small shaft of the moving shaft 44.

[0087] Specifically, refer to Figure 7 , Figure 9 The rear end face of the rotating shaft 43 is provided with a socket 431, and the main shaft of the moving shaft 44 is inserted into the socket 431.

[0088] It should be noted that the insertion hole 431 can also be set on the front end face of the moving shaft 44, and the main shaft of the rotating shaft 43 extends into the insertion hole 431 on the moving shaft 44.

[0089] Specifically, refer to Figure 8 The first elastic element 46 is a spring, with its two ends abutting against the rear end face of the insertion hole 431 and the front end face of the moving shaft 44, respectively. Furthermore, a hole is made on the front end face of the moving shaft 44, and the spring is installed in the hole. This method allows the spring to have a larger installation space and also limits its movement.

[0090] Specifically, refer to Figure 8 , Figure 9 The conversion assembly 45 includes a guide post 451 and a guide groove 452. In this design, the guide post 451 is mounted on the outer wall of the main shaft of the moving shaft 44, and the guide groove 452 is mounted inside the insertion hole 431. When the moving shaft 44 moves from back to front, the guide post 451 moves within the guide groove 452, causing the rotating shaft 43 to rotate.

[0091] It should be noted that the guide post 451 can also be set on the inner wall of the insertion hole 431, and correspondingly, the guide groove 452 can be set on the outer wall of the main shaft of the moving shaft 44.

[0092] Furthermore, the guide groove 452 includes a plurality of first guide grooves 4521 and a plurality of second guide grooves 4522, wherein the first guide grooves 4521 are arranged along the front-back direction and are evenly distributed on the inner wall of the insertion hole 431, and the second guide grooves 4522 connect two adjacent first guide grooves 4521.

[0093] It should be noted that the number of first guide grooves 4521 is the same as the number of second guide grooves 4522.

[0094] Furthermore, refer to Figure 9The second guide groove 4522 includes an input section 45221, a guide section 45222, and an output section 45223 connected in sequence. The input section 45221 is provided with a guide slope to ensure that the guide post 451 in the first guide groove 4521 connected to the input section 45221 can enter the corresponding second guide groove 4522. The protrusions on the front and rear walls of the guide section 45222 are staggered so that the guide post 451 can enter the output section 45223 after entering the guide section 45222 from the input section 45221.

[0095] During operation, the moving shaft 44 is pushed forward, causing the guide column 451 to move within the first guide groove 4521. At this time, the moving shaft 44 and the rotating shaft 43 are relatively fixed in the circumferential direction. Further, when the guide column 451 enters the second guide groove 4522 from the first guide groove 4521, it is guided by the guide ramp of the input section 45221 and enters the second guide groove 4522. At this time, the rotating shaft 43 begins to rotate. Further still, when the moving shaft 44 moves to its foremost position, the guide column 451 is located at the protrusion on the front wall of the guide section 45222. At this time, the first elastic element 46 is in the maximum compression state. Further, the moving shaft 44 is released, the first elastic element 46 recovers its deformation, and pushes the moving shaft 44 to move backward, so that the guide post 451 moves backward and contacts the rear wall of the guide section 45222. Since the protrusions of the front wall and the rear wall of the guide section 45222 are staggered, the rear wall of the guide section 45222 that contacts the guide post 451 is inclined, which can guide the guide post 451 to move towards the output section 45223, and finally enter the next first guide groove 4521 through the output end.

[0096] It should be noted that when the guide post 451 moves within the second guide groove 4522, the rotating shaft 43 is in a rotating state.

[0097] It should be noted that by rotating the optical axis 1, firstly, the warped part of the optical axis 1 can be rotated to the side that contacts the roller 31, and the optical axis 1 can be straightened by the limiting groove 311 of the roller 31; secondly, the warped part of the optical axis 1 can be flipped so that the warped part is opposite to the direction of gravity, and the optical axis 1 is straightened under the action of gravity.

[0098] As a preferred embodiment, the number of first guide grooves 4521 is more than two, and the rotation angle of the rotating shaft 43 is 0 to 180 degrees each time.

[0099] It should be noted that the angle of rotation of the rotating shaft 43 each time is 360 / the number of first guide grooves 4521.

[0100] As a further preferred option, the number of first guide grooves 4521 is more than three, and the rotation angle of the rotating shaft 43 is 0 to 90 degrees each time.

[0101] Since this scheme sets a rotating mechanism 4 on both optical axes 1, and sets the rotation angle of the rotating shaft 43 to 180 degrees each time, it has a significant impact on the running accuracy of the slider 3. Therefore, in this scheme, the number of the first guide groove 4521 is set to four, so that when the moving shaft 44 reciprocates once, the rotating shaft 43 rotates by 90 degrees.

[0102] As a preferred embodiment, the present invention also provides a method for measuring the straightness of the optical axis 1, which specifically adopts the following steps:

[0103] Step 1: Set up the guide rail along the front-to-back direction and install the dial indicator on the guide rail;

[0104] Step 2: Select the middle section on optical axis 1 as the detection area;

[0105] Step 3: Move the dial indicator from front to back, record the maximum value of the fluctuation, and mark the point on optical axis 1;

[0106] Step 4: After moving the dial indicator probe circumferentially, repeat step 3;

[0107] Step 5: Based on the above measurement data, draw a cross-sectional view at the plotted point of optical axis 1 to determine the bending direction of optical axis 1.

[0108] Based on the measured bending direction, the angle of rotation of the optical axis 1 is determined, and then the number of times the moving axis 44 needs to be pressed is determined.

[0109] For example, the angle between the bending direction of the optical axis 1 and the up and down direction is 90 degrees (that is, the optical axis 1 bends away from the roller 31). After the moving shaft 44 reciprocates once, the rotating shaft 43 rotates by 30 degrees. When straightening with the roller 31, the optical axis 1 needs to be rotated 180 degrees, so the moving shaft 44 needs to be pressed 6 times (180 / 6). When straightening with gravity, the optical axis 1 needs to be rotated 90 degrees (the rotating shaft 43 rotates clockwise), so the moving shaft 44 needs to be pressed 3 times (90 / 30).

[0110] It should be noted that since the diameter of the optical axis 1 is a fixed value, the position of the circle can be determined by determining the position and radius of the two points on the circle, and thus the bending direction of the optical axis 1 can be calculated.

[0111] It should be noted that even if the curvature of the optical axis 1 is not measured, the optical axis 1 can be rotated periodically to straighten it.

[0112] Example 3

[0113] Since triggering the rotation mechanism 4 requires manual operation, further improvements are made based on Example 2 in order to reduce the workload of the operator.

[0114] refer to Figure 2, Figure 4 , Figure 6 , Figure 10 , Figure 11 A transmission mechanism 5 is provided, which transmits the power of the slider 3 moving back and forth to the rotating mechanism 4, thereby driving the optical axis 1 to rotate. The transmission mechanism 5 includes a inserter 51, which is disposed on the rear end face of the slider 3. When the slider 3 moves backward, the inserter 51 can pass through the mounting plate 2 and the support plate 41 in sequence. The transmission mechanism 5 also includes a sleeve 52, which is disposed on the rear end face of the support plate 41. One end of the sleeve 52 is open, and a telescopic rod 53 is slidably connected inside it. The telescopic rod 53 extends out of the sleeve 52 along the open end of the sleeve 52. A strip groove 521 is provided on the wall of the sleeve 52, which extends upward out of the sleeve 52. A connecting rod 531 is connected to the outer wall of the telescopic rod 53. The connecting rod 531 extends upward out of the sleeve 52 along the strip groove 521. A lever 532 is provided at the end of the connecting rod 531 that extends out of the sleeve 52. The lever 532 is opposite to the small shaft of the moving shaft 44. The transmission mechanism 5 also includes a second elastic element 54, which pushes the telescopic rod 53 to move out of the sleeve 52.

[0115] It should be noted that a guide surface 511 is provided on the side of the inserter 51 that contacts the telescopic rod 53, so that when the inserter 51 contacts the telescopic rod 53, it can push the telescopic rod 53 to move in the left and right directions (obviously, the guide surface 511 can also be provided on the telescopic rod 53). The guide surface 511 can be an inclined surface or an arc surface.

[0116] It should be noted that a trigger surface 533 is provided on the side of the toggle block 532 that contacts the moving shaft 44, so that when the toggle block 532 contacts the moving shaft 44, it can push the moving shaft 44 to move in the back-and-forth direction (obviously, the trigger surface 533 can also be provided on the moving shaft 44). The trigger surface 533 can be an inclined surface or an arc surface.

[0117] It should be noted that, under normal circumstances, the part of the optical axis 1 that is bent is the middle section. When the slider 3 moves to the rear end to trigger the transmission mechanism 5 to work, the impact on the slider 3 is relatively small.

[0118] It should be noted that in this scheme, the second elastic element 54 can be a spring, with the two ends of the spring contacting the sealing end of the sleeve 52 and the telescopic rod 53, respectively.

[0119] During operation, the slider 3 moves backward, causing the inserter 51 to pass through the mounting plate 2 and the support plate 41 in sequence. When the inserter 51 contacts the telescopic rod 53, it pushes the telescopic rod 53 into the sleeve 52. The movement of the telescopic rod 53 causes the connecting rod 531 to move, so that the toggle block 532 contacts the moving shaft 44, thereby pushing the moving shaft 44 forward, which in turn drives the rotating shaft 43 to rotate. Further, after the slider 3 moves forward and disengages from the telescopic rod 53, the second elastic element 54 restores its deformation, pushing the telescopic rod 53 out of the sleeve 52, thereby causing the toggle block 532 to separate from the moving shaft 44. The moving shaft 44 moves backward under the action of the first elastic element 46 until the moving shaft 44 returns to its initial position.

[0120] As a preferred embodiment, multiple sensors can be installed on the base 6 to detect the position of the slider 3. Specifically, three sensors are arranged sequentially from front to back. The foremost sensor limits the maximum forward movement of the slider 3. The middle sensor limits the maximum backward movement of the slider 3 under normal conditions, at which point the insert 51 and the telescopic rod 53 do not contact each other. The rearmost sensor limits the maximum backward movement of the slider 3, which is also the maximum backward movement of the insert 51. At this position, the insert 51 contacts the telescopic rod 53, and the length of the telescopic rod 53 extending into the sleeve 52 is the maximum value.

[0121] Multiple sensors are connected to the controller. The controller is set to turn off the sensor at the middle position. When the sensor at the middle position turns off, the slider 3 can move backward until the sensor at the end of the last position senses the slider 3. Then, the controller controls the slider 3 to move forward. In this way, the optical axis 1 can be rotated according to a predetermined time to achieve the repair of the optical axis.

[0122] It should be noted that the transmission mechanism 5 and the rotating mechanism 4 are used in combination. In this scheme, the rotating mechanism 4 is set on each of the pair of optical axes 1. Correspondingly, there are two transmission mechanisms 5, and the two transmission mechanisms 5 are arranged symmetrically on the left and right.

[0123] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dual-axis linear transmission module, comprising: Base (6); Optical axis (1), the axis of optical axis (1) is parallel to the length direction of base (6), and a pair of optical axes (1) are set opposite to each other along the width direction of base (6); Mounting plate (2), mounting plate (2) is set on base (6), mounting plate (2) is used to install and fix optical axis (1), multiple mounting plates (2) are arranged sequentially along the length direction of base (6); The slider (3) is provided with rollers (31). A pair of rollers (31) are symmetrically arranged along the width direction of the base (6). Multiple pairs of rollers (31) are arranged along the length direction of the base (6). The outer peripheral wall of the rollers (31) is provided with limiting grooves (311). A pair of rollers (31) arranged opposite to each other in the width direction of the base (6) are slidably connected to a pair of optical axes (1) through the limiting grooves (311). Its characteristic is that the spacing between a pair of optical axes (1) is adjustable; It also includes a rotating mechanism (4), at least one optical axis (1) is equipped with a rotating mechanism (4), the rotating mechanism (4) drives the optical axis (1) to rotate and repair the bent optical axis (1).

2. The dual-axis linear transmission module according to claim 1, characterized in that, The mounting plate (2) is provided with mounting holes (21), which are used to install and fix the optical axis (1). At least three mounting holes (21) are arranged sequentially on the same mounting plate (2) along the width direction of the base (6), and the optical axis (1) can be detachably installed in the mounting holes (21).

3. The dual-axis linear transmission module according to claim 2, characterized in that, Mounting plate (2) includes: The first plate (22) and the second plate (23) are arranged sequentially along the height direction of the base (6). The second plate (23) is fixedly arranged on the base (6). The mounting hole (21) includes a first half hole (211) and a second half hole (212) arranged opposite each other in the vertical direction. The first half hole (211) is arranged on the first plate (22), and the second half hole (212) is arranged on the second plate (23). Connector (24) is used to connect the first plate (22) and the second plate (23).

4. The dual-axis linear transmission module according to claim 3, characterized in that, The rotating mechanism (4) includes: A support plate (41) is provided on the base (6). A through hole (411) is provided on the support plate (41). The through hole (411) passes through both ends of the support plate (41) along the length direction of the base (6). Sleeve (42) is a hollow structure with openings at both ends. One end of sleeve (42) is fixedly installed on support plate (41). A rotating shaft (43) has one end inserted into a sleeve (42) and the other end fixedly connected to an optical axis (1). The rotating shaft (43) is fixed relative to the sleeve (42) in the axial direction and can rotate relative to the sleeve (42) in the circumferential direction. The movable shaft (44) has one end inserted into the sleeve (42) and the other end inserted into and through the through hole (411). The movable shaft (44) is fixed relative to the through hole (411) in the circumferential direction and can move relative to the sleeve (42) in the axial direction. The first elastic element (46) pushes the moving shaft (44) to move away from the sleeve (42); The conversion component (45) moves the moving shaft (44) and drives the rotating shaft (43) to rotate.

5. The dual-axis linear transmission module according to claim 4, characterized in that, The conversion component (45) includes: The guide post (451) and guide groove (452) are respectively set on the rotating shaft (43) and the moving shaft (44). The moving shaft (44) moves to drive the guide post (451) to slide in the guide groove (452). The sliding of the guide post (451) in the guide groove (452) drives the rotating shaft (43) to rotate.

6. The dual-axis linear transmission module according to claim 5, characterized in that, The guide groove (452) includes: The first guide groove (4521) is arranged along the axial direction, and there are multiple first guide grooves (4521), which are evenly distributed along the circumferential direction. The second guide groove (4522) is connected at both ends to two adjacent first guide grooves (4521). The second guide groove (4522) includes an input section (45221), a guide section (45222) and an output section (45223). The input section (45221) is used to guide the guide post (451) from the first guide groove (4521) into the second guide groove (4522). The guide section (45222) is used to guide the guide post (451) to move from the guide section (45222) to the output section (45223). The output section (45223) is used to guide the guide post (451) to move to the next first guide groove (4521).

7. The dual-axis linear transmission module according to claim 6, characterized in that, The rotating shaft (43) is inserted into the sleeve (42) at one end with a socket (431), the guide groove (452) is set on the inner wall of the socket (431), and the guide post (451) is set at one end of the moving shaft (44) inserted into the socket (431). The number of guide posts (451) is the same as the number of the first guide groove (4521).

8. The dual-axis linear transmission module according to claim 7, characterized in that, It also includes a transmission mechanism (5), the number of which is the same as the number of rotating mechanisms (4). The transmission mechanism (5) transmits the power of the slider (3) to the corresponding rotating mechanism (4).

9. The dual-axis linear transmission module according to claim 8, characterized in that, The transmission mechanism (5) includes: Insert knife (51), the insert knife (51) is fixedly set on the slider (3); The sleeve (52) is a hollow structure with one end sealed. The outer wall of the sleeve (52) is provided with a strip groove (521). The strip groove (521) is connected to the inner cavity of the sleeve (52). There are multiple strip grooves (521). Telescopic rod (53) can slide in sleeve (52) along the width direction of base (6). One end of telescopic rod (53) extends out of the opening end of sleeve (52). Connecting rod (531) is connected to telescopic rod (53). Connecting rod (531) extends out of sleeve (52) along strip groove (521). A lever (532) is provided at the end of connecting rod (531) away from telescopic rod (53). Lever (532) is provided opposite to moving shaft (44) in the width direction of base (6). There are multiple connecting rods (531) and levers (532) connected to each other. The second elastic element (54) pushes the telescopic rod (53) to move away from the sleeve (52).

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