CN217073366U - Guide rail device and 3D printer - Google Patents

Abstract

The application provides a guide rail device and 3D printer, this guide rail device include first guide rail, second guide rail and sliding assembly, and first guide rail removes to be connected in the second guide rail, and sliding assembly removes to be connected in first guide rail. The relative both sides of first guide rail are equipped with first accepting groove, are equipped with the guiding axle in the first accepting groove, and slip subassembly and guiding axle sliding connection. The sliding assembly comprises a mounting plate and a pulley, and the pulley is rotatably connected to one side, facing the first guide rail, of the mounting plate and movably connected with the guide shaft. The periphery of the pulley is provided with a sunken part which is buckled with the guide shaft. Above-mentioned guide rail device is through setting up the guiding axle at first guide rail side, utilizes the pulley that has the depressed part and guiding axle cooperation, replaces the frictional contact structure of traditional slider and guide rail, has both strengthened the sliding fit's between pulley and the guiding axle compactness, has improved the smooth and stable of sliding assembly along first guide rail removal again.

Description

Guide rail device and 3D printer

Technical Field

The application relates to the technical field of 3D printing equipment, especially, relate to a guide rail device and 3D printer.

Background

The 3D printing technology is one of the high and new technologies rapidly developed in recent years, and a guide rail device for driving a printing nozzle to move plays a crucial role in printing quality. The higher the moving accuracy of the guide rail device, the better the stability, and the higher the printing quality. However, most of the guide rail devices on the market at present are provided with sliding blocks which are in direct frictional contact with the guide rail, and the sliding blocks are easy to cause structural wear and deformation of the guide rail after long-term use, so that the moving precision of the guide rail devices is affected, and the printing quality of the 3D printer is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above situation, the present application provides a guide rail device and 3D printer that has this guide rail device, on the one hand through the mechanical properties of guiding axle promotion first guide rail, on the other hand utilizes the pulley that has the depressed part and the guiding axle cooperation, replaces the friction contact structure of traditional slider and guide rail, has both strengthened the sliding fit's between pulley and the guiding axle compactness, has improved the smooth and stable of sliding assembly along the removal of first guide rail again, is favorable to reducing the maintenance work in daily use simultaneously.

The embodiment of the application provides a guide rail device, including first guide rail, second guide rail and sliding assembly, first guide rail move to be connected in the second guide rail, and sliding assembly moves to be connected in first guide rail. The relative both sides of first guide rail are equipped with first accepting groove, are equipped with the guiding axle in the first accepting groove, and sliding assembly and guiding axle sliding connection. The sliding assembly comprises a mounting plate and a pulley, and the pulley is rotatably connected to one side, facing the first guide rail, of the mounting plate and movably connected with the guide shaft. The periphery of the pulley is provided with a sunken part which is buckled with the guide shaft.

So, through pulley and the guiding axle cooperation that has the depressed part, reduce the friction between sliding assembly and the first guide rail, strengthen sliding fit's between pulley and the guiding axle compact type, improve smooth and stable that sliding assembly removed along first guide rail.

In some embodiments, the diameter of the first receiving groove is smaller than the diameter of the guide shaft, and the guide shaft portion is fitted into the first receiving groove.

So, can realize the location when guiding axle imbeds to first accepting groove in, need not to set up other location structure.

In some embodiments, the opposite sides of the first guide rail are further provided with second receiving grooves, the first receiving grooves and the second receiving grooves are arranged at intervals, and the second receiving grooves are used as a moving space of the transmission belt.

In some embodiments, a through groove and a third accommodating groove are further formed in the first guide rail, the through groove is located between adjacent first accommodating grooves, and the third accommodating groove is located between adjacent second accommodating grooves.

In this way, the through groove and the third accommodating groove can be used as a moving space for a belt or the like, and on the other hand, the weight of the first guide rail can be reduced by the lightening hole of the first guide rail, and the deformation amount of the long first guide rail under the action of gravity can be reduced.

In some embodiments, the outer surface of the first rail is further provided with a protective layer.

Therefore, the protective layer can improve the performances of surface hardness, wear resistance, rust resistance, corrosion resistance and the like of the first guide rail, prolong the service life of the first guide rail and enhance the attractiveness.

In some embodiments, the sliding assembly further comprises an eccentric nut provided at one side of the mounting plate and detachably coupled to the pulley. Eccentric nut is used for adjusting the pulley position of mounting panel unilateral to rectify the mounted position of sliding component on first guide rail, reduce the dead problem of sliding component card on first guide rail, let sliding component can follow first guide rail and remove smoothly.

In some embodiments, the pulley includes an inner ring structure and an outer ring structure, the inner ring structure is rotatably connected to the outer ring structure, the recess is provided on a circumferential side surface of the outer ring structure, and the inner ring structure is connected to the mounting plate.

In some embodiments, a mounting bracket is arranged at an end of the first guide rail, a guide wheel and a first driver are arranged on the mounting bracket, the guide wheel is movably connected with the second guide rail, and the first driver is in transmission connection with the sliding assembly and is used for driving the sliding assembly to move along the first guide rail.

In some embodiments, the second guide rail is provided with a transmission rod and a second driver, the transmission rod is connected with an output end of the second driver, the mounting bracket is connected with the transmission rod, and the second driver drives the mounting bracket to slide along the second guide rail through the transmission rod.

The embodiment of the application also provides a 3D printer, and the 3D printer comprises the guide rail device in the embodiment.

Drawings

Fig. 1 is a schematic structural diagram of a rail device in an embodiment.

Fig. 2 is a schematic view of the guide rail device shown in fig. 1 in another direction.

Fig. 3 is a schematic view of the first rail and the sliding assembly of the rail apparatus shown in fig. 1.

Fig. 4 is a side view of the first rail shown in fig. 3.

Fig. 5 is a top view of the slide assembly shown in fig. 3.

Figure 6 is a side view of the slide assembly shown in figure 5.

Fig. 7 is a top and side view of the roller structure of fig. 6.

Fig. 8 is a partial top view of the structure shown in fig. 3.

Fig. 9 is a side view of the structure shown in fig. 8.

Fig. 10 is a schematic structural diagram of a 3D printer in an embodiment.

Description of the main element symbols:

the specific implementation mode is as follows:

the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The application provides a guide rail device and 3D printer, this guide rail device include first guide rail, second guide rail and sliding assembly, and first guide rail removes to be connected in the second guide rail, and sliding assembly removes to be connected in first guide rail. The relative both sides of first guide rail are equipped with first accepting groove, are equipped with the guiding axle in the first accepting groove, and slip subassembly and guiding axle sliding connection. The sliding assembly comprises a mounting plate and a pulley, and the pulley is rotatably connected to one side, facing the first guide rail, of the mounting plate and movably connected with the guide shaft. The periphery of the pulley is provided with a sunken part which is buckled with the guide shaft.

Above-mentioned guide rail device promotes the mechanical properties of first guide rail through the guiding axle on the one hand, and on the other hand utilizes the pulley that has the depressed part and guiding axle cooperation, replaces the frictional contact structure of traditional slider and guide rail, has both strengthened the sliding fit's between pulley and the guiding axle compactness, has improved the smooth and stable of slip subassembly along the removal of first guide rail again, is favorable to reducing the maintenance work in daily use simultaneously.

Some embodiments of the present application are described in detail. In the following embodiments, features of the embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, in one embodiment, the guide rail apparatus 100 includes a first guide rail 10, a second guide rail 20, and a sliding assembly 30. The first guide rail 10 is movably connected to the second guide rail 20, and the sliding assembly 30 is movably connected to the first guide rail 10. The first guide rail 10 is disposed along a first direction a, the second guide rail is disposed along a second direction B, and the first direction a and the second direction B are disposed at an angle. In the embodiment of the present application, the first rail 10 is disposed substantially perpendicular to the second rail 20.

Referring to fig. 3 and 4, first receiving grooves 11 are formed on two opposite sides of the first guide rail 10 along a width direction of the first guide rail 10, i.e., a second direction B shown in fig. 3. A guide shaft 12 is arranged in the first accommodating groove 11, and a part of the guide shaft 12 protrudes out of the first accommodating groove 11. The sliding member 30 is slidably connected to a portion of the guide shaft 12 protruding out of the first receiving groove 11.

The main structure of the first guide rail 10 is preferably an aluminum profile, the type of the aluminum profile includes but is not limited to 2040 aluminum profile, and the application enhances the stress strength of the first guide rail 10 and reduces the weight of the first guide rail 10 by optimizing the structural shape of the profile. Specifically, in the embodiment of the present application, the width W of the first rail 10 is 40mm, and the thickness T is 20 mm. The side surface of the first guide rail 10 facing the sliding assembly 30 is a first surface 13, and the first receiving groove 11 is substantially shapedCylindrical groove, distance L between first housing groove 11 and first surface 13 ₁ About 5.4mm, a depth of about 4.18mm and a diameter of about 5.95 mm. The diameter of the guide shaft 12 is about 6 mm. The diameter and depth of the first receiving groove 11 are designed to be smaller than the diameter of the guide shaft 12, so that the guide shaft 12 is engaged with the first receiving groove 11 and partially protrudes from the first receiving groove 11 to engage with the sliding element 30. The aluminium alloy can be through the mode of machine suppression imbed guiding axle 12 in the first accepting groove 11 in both sides, makes aluminium alloy biax heart guide rail. The guide shaft 12 can be positioned when being inserted into the first receiving groove 11, and other positioning structures are not required. The first surface 13 is further provided with a plurality of grooves 131 for positioning and assisting in guiding the moving direction of the sliding assembly 30, and each groove 131 has a size of 1.0mm by 0.8 mm.

Furthermore, the aluminum profile is provided with a plurality of through holes 14 penetrating through the profile along the extension direction of the guide rail, and the center distance L between the adjacent through holes 14 along the width direction of the first guide rail 10 ₂ About 20 mm. In the embodiment of the present application, the number of the through holes 14 is two, and the diameter of the through holes 14 is about 4 mm. The through holes 14 may be used as lightening holes to lighten the weight of the first rail 10, and may also be used to install other positioning members, fasteners, etc., which are not presently disclosed.

Along the width direction of the first guide rail 10, second receiving grooves 15 are further disposed on two opposite sides of the first guide rail 10. The first receiving groove 11 and the second receiving groove 15 are spaced apart from each other in a thickness direction of the first rail 10, i.e., a third direction C shown in fig. 3. The first direction a, the second direction B and the third direction C are perpendicular to each other. The second receiving slot 15 is a substantially rectangular slot, which in the embodiment of the present application is approximately 8mm by 5.6mm in size. The second receiving groove 15 is used as a moving space for a transmission structure such as a belt. The side of the first guide rail 10 facing away from the first surface 13 is further provided with a connecting column 16 as a main structure for connecting the two-sided structure of the profile. In the embodiment of the present application, the wall thickness of the connecting column 16 is about 2 mm.

Further, along the third direction C, a through groove 17 and a third receiving groove 18 are further disposed at an interval in the middle of the side surface of the first rail 10, the through groove 17 is located between the two first receiving grooves 11, and the third receiving groove 18 is located between the two second receiving grooves 15. The third receiving groove 18 is located on the side of the profile facing away from the first surface 13 and has a side opening. The through-slot 17 can be used, on the one hand, as a movement space for a drive belt or the like, and, on the other hand, as a lightening hole for a profile, further reducing the weight of the first guide rail 10. The third receiving groove 18 is used as a space for movement of a guide member (T-nut) or a transmission member (belt). In the embodiment of the present application, as shown in fig. 4, the cross-sectional shapes of the through groove 17 and the third receiving groove 18 are also substantially rectangular, the cross-sectional size of the through groove 17 is about 9.8mm by 7.4mm, and the cross-sectional size of the third receiving groove 18 is about 11.2mm by 7 mm. Along the second direction B, the width of the side opening of the third receiving groove 18 is smaller than the width of the third receiving groove 18, so as to form a supporting portion 181 at the side opening for positioning a workpiece or a structure disposed in the third receiving groove 18.

The utility model provides a first guide rail 10 uses the aluminium alloy of optimizing the structure as main part foundation structure, has alleviateed first guide rail 10's weight greatly, has still increased strengthening rib, chamfer, fillet isotructure in the aluminium alloy according to the atress direction simultaneously for the bulk strength of first guide rail 10 obtains further reinforcing. In addition, the mode of aluminium alloy and two guiding axle 12's combined use machine suppression has guaranteed the uniformity and the depth of parallelism of two guiding axle 12 for first guide rail 10 has sufficient hardness, can satisfy the demand that can not take place deformation on certain length, improves first guide rail 10's direction precision, the installation of being convenient for simultaneously.

In some embodiments of the present application, the outer surface of the aluminum profile is further provided with a protective layer, and the protective layer can be formed on the surface of the aluminum profile by using an anodic oxidation process. Under the corresponding electrolyte and specific process conditions, a layer of compact oxide film is formed on the surface of the aluminum profile under the action of external current, and the oxide film is the protective layer. The protective layer not only improves the performances of surface hardness, wear resistance, rust resistance, corrosion resistance and the like of the aluminum profile, but also prolongs the service life of the aluminum profile and enhances the attractiveness.

Referring to fig. 3 and 5 to 9, the sliding assembly 30 includes a mounting plate 31 and a pulley 32, the mounting plate 31 is used for connecting and mounting a print head, and the pulley 32 is rotatably connected to a side of the mounting plate 31 facing the first guide rail 10 and movably connected to the guide shaft 12. The periphery of the pulley 32 is provided with a concave portion 321, and the concave portion 321 is engaged with the portion of the guide shaft 12 protruding out of the first accommodating groove 11, so as to realize the positioning between the guide shaft 12 and the pulley 32. In the embodiment of the present application, the recess 321 has a substantially U-shaped cross section to fit the shape of the outer surface of the guide shaft 12. The pulley 32 can roll or slide along the guide shaft 12 when the mounting plate 31 moves along the first guide rail 10.

In the embodiment of the present application, the guide shaft 12 is an optical axis, and the pulley 32 with a U-shaped groove structure is used in combination, so that the tightness of the sliding fit between the pulley 32 and the guide shaft 12 is enhanced, the smoothness and stability of the movement of the sliding assembly 30 along the first guide rail 10 are improved, and the maintenance work in daily use is reduced. The pulley 32 and the guide shaft 12 are simple in matching structure, so that the assembly is more convenient and easier, and the manufacturing efficiency is improved. Compare in traditional plastic pulley and guide rail complex mode, the pulley 32 of U-shaped groove structure cooperates with the guiding axle 12 of optical axis structure, can avoid the wearing and tearing on pulley surface and bruise, is favorable to promoting the removal precision of guide rail structure, improves and prints the effect to extension equipment life.

In other embodiments, the guide shaft 12 may also be configured as a screw rod, and the concave portion 321 of the pulley 32 is provided with a thread matching with the screw rod, so that the screw rod can drive the pulley 32 to move when rotating, thereby moving the sliding assembly 30 integrally along the first guide rail 10.

The sliding assembly 30 further includes an eccentric nut 33, and the eccentric nut 33 is provided at one side of the mounting plate 31 and detachably coupled to a part of the pulley 32. Specifically, the plurality of pulleys 32 are divided into two groups, and the two groups of pulleys 32 are respectively located at opposite sides of the first guide rail 10 along the second direction B, wherein one group of pulleys 32 is directly connected to the mounting plate 31, and the other group of pulleys 32 is connected to the mounting plate 31 through the eccentric nut 33. The eccentric nut 33 is used for adjusting the position of the pulley 32 on one side of the mounting plate 31, so as to correct the mounting position of the sliding assembly 30 on the first guide rail 10, reduce the problem that the sliding assembly 30 is stuck on the first guide rail 10, and enable the sliding assembly 30 to move smoothly along the first guide rail 10.

When the first guide rail 10 and the sliding assembly 30 are assembled, the U-shaped groove pulley 32 and the eccentric nut 33 can be adjusted by using a special workpiece, so that the matching structure of the sliding assembly 30 and the first guide rail 10 is stable and durable, and the maintenance work of a user on the guide rails can be reduced in the using process.

Further, referring to fig. 7 again, the pulley 32 includes an inner ring structure 322 and an outer ring structure 323, and the inner ring structure 322 is rotatably connected to the outer ring structure 323. The recessed portion 321 is provided on the circumferential side surface of the outer ring structure 323 so as to be engaged with the guide shaft 12. A bearing is further arranged between the inner ring structure 322 and the outer ring structure 323, and is used for reducing friction and improving the smoothness of the sliding assembly 30. Or, directly set up the ball between inner circle structure 322 and the outer lane structure 323, the lateral wall of inner circle structure 322 is equipped with the constant head tank that is used for fixing a position the ball, and when inner circle structure 322 and outer lane structure 323 assemble, the ball parcel is in the inner structure of pulley 32, the difficult problem that unexpected drops that appears. When the pulley 32 rotates, the balls rotate inside the pulley 32, and the rotational friction is reduced. The inner side wall of the inner ring structure 322 may also be provided with threads to facilitate connection with the mounting plate 31 by fasteners such as screws.

Referring to fig. 1 and fig. 2 again, the end of the first rail 10 is further provided with a mounting bracket 40, and the mounting bracket 40 is slidably connected to the second rail 20 to drive the first rail 10 to move along the second rail 20. Further, the mounting bracket 40 is further provided with a guide wheel 41 and a first driver 42. The guide wheels 41 are disposed on opposite sides of the second rail 20 along the first direction a, and cooperate with the guide grooves 21 on the second rail 20 for guiding the moving direction of the mounting bracket 40 on the second rail 20. The first driver 42 is drivingly connected to the sliding member 30 to drive the sliding member 30 to slide along the first guide rail 10. In an embodiment of the present application, a connecting member (not shown) may be further disposed on the mounting plate 31 of the sliding assembly 30, and the connecting member may be used to fixedly connect a transmission belt, and the first driver 42 may drive the transmission belt to rotate so as to pull the sliding assembly 30 to move along the first guide rail 10. In other embodiments of the present application, the first driver 42 may also be screwed to the sliding assembly 30 through a screw rod, and the sliding assembly 30 is driven to move along the first guiding rail 10 by driving the screw rod to rotate.

Further, a transmission rod 22 and a second driver 50 are further disposed on the second rail 20, and an output end of the second driver 50 is connected to one end of the transmission rod 22. The mounting bracket 40 is provided with a connecting portion 43, the connecting portion 43 is sleeved on the transmission rod 22 and is in threaded connection with the transmission rod 22, and when the second driver 50 drives the transmission rod 22 to rotate, the mounting bracket 40 can move along the transmission rod 22, so as to drive the first guide rail 10 to move along the second guide rail 20.

In the embodiment of the present application, two second rails 20 are disposed at intervals along the first direction a, and are slidably connected to the first rail 10 through the mounting bracket 40. The second driver 50 is installed on one of the second guide rails 20, the transmission rods 22 on the two second guide rails 20 are connected through a transmission belt, and when the second driver 50 drives one of the transmission rods 22 to rotate, the other transmission rod 22 synchronously rotates under the action of the transmission belt, so that the two ends of the first guide rail 10 synchronously move, which is beneficial to improving the moving precision of the guide rail device 100. The track device 100 further comprises a connecting rod 60 fixedly connected between the two second tracks 20 to position the second tracks 20 and maintain the stability of the track structure.

Referring to fig. 10, an embodiment of the present application further provides a 3D printer 200, which includes a nozzle assembly 201 and the guide rail device 100 of the above embodiment, wherein the nozzle assembly 201 is fixedly connected to the mounting plate 31 of the sliding assembly 30, so that the nozzle assembly 201 moves synchronously with the sliding assembly 30.

Although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present application.

Claims (10)

1. A track arrangement, comprising:

a first guide rail;

the first guide rail is movably connected with the second guide rail; and

the sliding assembly is movably connected to the first guide rail;

the guide rail device is characterized in that first accommodating grooves are formed in two opposite sides of the first guide rail, guide shafts are arranged in the first accommodating grooves, and the sliding assembly is connected with the guide shafts in a sliding mode;

the sliding assembly comprises a mounting plate and a pulley, and the pulley is rotatably connected to one side of the mounting plate, which faces the first guide rail, and movably connected with the guide shaft;

the periphery of the pulley is provided with a sunken part, and the sunken part is buckled with the guide shaft.

2. The guide rail apparatus of claim 1, wherein the first receiving groove has a diameter smaller than a diameter of the guide shaft, and the guide shaft portion is fitted into the first receiving groove.

3. The track assembly of claim 1, wherein the first track further comprises second receiving grooves formed on opposite sides of the first track, the first receiving grooves being spaced apart from the second receiving grooves, the second receiving grooves serving as a space for movement of the belt.

4. The track arrangement of claim 3 wherein said first track further defines a channel and a third pocket, said channel being positioned between adjacent first pockets and said third pocket being positioned between adjacent second pockets.

5. The track arrangement of claim 1 wherein the outer surface of the first track is further provided with a protective layer.

6. The track set of claim 1 wherein the sliding assembly further comprises an eccentric nut disposed on one side of the mounting plate and removably coupled to the pulley.

7. The track assembly of claim 1 wherein said pulley includes an inner race structure and an outer race structure, said inner race structure being rotatably coupled to said outer race structure, said recess being disposed on a peripheral side surface of said outer race structure, said inner race structure being coupled to said mounting plate.

8. The track assembly of claim 1 wherein the first track has a mounting bracket at an end thereof, the mounting bracket having a guide wheel movably coupled to the second track and a first actuator drivingly coupled to the slider assembly for driving the slider assembly along the first track.

9. The track assembly of claim 8 wherein the second track has a drive bar and a second actuator, the drive bar is coupled to an output of the second actuator, the mounting bracket is coupled to the drive bar, and the second actuator drives the mounting bracket to slide along the second track via the drive bar.

10. A 3D printer comprising a rail apparatus according to any one of claims 1 to 9.

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