Linear module

Abstract

The utility model belongs to the technical field of transmission devices, and relates to a linear module, which comprises a base, the top of the inner cavity is provided with an opening; the sliding table is slidably connected to the base in the length direction of the base at the opening; the driving assembly is arranged in the inner cavity; the driving assembly is used for driving the sliding table to move along the base; the number of the tensioning mechanisms is two; each tensioning mechanism comprises a tensioning assembly and a roll shaft arranged on the tensioning assembly, and the tensioning assemblies of the two tensioning mechanisms are arranged at the two opposite ends of the base correspondingly and used for driving the corresponding roll shafts to be away from or close to the ends of the base; the sealing belt is annular; the sealing belt is arranged at the bottom of the base in a sleeving mode and wound around the roll shafts of the two tensioning mechanisms so that the sealing belt and the roll shafts can form a belt transmission structure, the two ends of the sealing belt are connected to the two opposite sides of the sliding table respectively so that the opening and the inner cavity can be sealed, and the sealing belt can move along the circulation path of the sealing belt along with the sliding table. The linear module is simple in structure, small in occupied space, good in dustproof effect and long in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to transmission device technical field especially relates to a linear module. BACKGROUND

[0002] Linear module is a kind of transmission device, which directly converts the energy of power source such as motor into linear motion mechanical energy without any intermediate conversion mechanism, has the characteristics that light load automation is more flexible, positioning is more accurate. Taking linear motor module as an example, in many special application scenarios of linear motor module, its dustproof requirement is generally higher. In the prior art, linear motor module mainly adopts the following three protection measures:

[0003] (1) the way of adopting upper cover plate, this first way either simple structure, can prevent the larger volume of foreign matter falling in the positive direction, but the dustproof effect is poor;Or complex structure, high cost, and still cannot prevent dust.

[0004] (2) the way of adopting organ case, this second way although protection effect is good, can prevent dust and foreign matter from falling, but need to give the compression of organ case to reserve the activity space, therefore, the overall space occupation of module is big, and long-time use abrasion is serious, itself can produce dust, not suitable for high requirement dust-free environment.

[0005] (3) the way of sealing structure by fixing a sealing steel sheet passing through sliding seat on base, this third way although can prevent machining chips from entering into module, but in actual driving process, sealing steel sheet can be bent and deformed, machining chips can fall on sealing steel sheet and cannot be cleaned;And when sliding seat moves, chips can occasionally be stuck between sealing steel sheet and sliding seat, cause sliding seat to move not smoothly, even component scratch and damage. INVENTION CONTENTS

[0006] The utility model embodiment at least solves one of the technical problems existing in the prior art to provide a kind of linear module with simple structure, small space occupation and good dustproof effect, long service life.

[0007] To solve the above technical problems, the utility model embodiment provides a kind of linear module, which adopts the technical scheme as follows:

[0008] The linear module comprises:

[0009] Base, recessed with inner cavity;The top end of the inner cavity has an opening;

[0010] Sliding table, slidingly connected to the base along the length direction of the base at the opening;

[0011] Drive assembly, built-in in the inner cavity;The drive assembly is used to drive the sliding table to move along the base;

[0012] The tensioning mechanism is provided with two; each of the tensioning mechanism comprises a tensioning assembly and a roller shaft arranged on the tensioning assembly, and the tensioning assemblies of the two tensioning mechanisms are arranged at opposite ends of the base respectively, and are used for driving the corresponding roller shafts away from or close to the end of the base;

[0013] The sealing belt is annular; the sealing belt is sleeved on the bottom of the base and is arranged around the roller shafts of the two tensioning mechanisms to form a belt transmission structure with the roller shafts, and two ends of the sealing belt are connected to opposite sides of the sliding table respectively to cover the opening and the inner cavity and to enable the sealing belt to move along the circulation path of the sealing belt with the sliding table.

[0014] In some embodiments of the utility model, the roller shafts of each tensioning mechanism are provided with two, and the two roller shafts are arranged in gaps along the height direction of the base.

[0015] In some embodiments of the utility model, the tensioning assembly comprises:

[0016] The mounting seat is arranged at the end of the base and is slidably mounted with the roller shaft in the mounting cavity along the length direction of the base;

[0017] The tensioning piece is movably arranged in the mounting cavity and is used for driving the roller shaft to slide relative to the mounting seat;

[0018] The adjusting assembly is arranged on the mounting seat and the tensioning piece and is used for adjusting the distance between the tensioning piece and the end of the base.

[0019] In some embodiments of the utility model, in some embodiments of the utility model, in some embodiments of the utility model, in some embodiments of the utility model, in some embodiments of the utility model, the roller shafts of each tensioning mechanism are provided with two, and the two roller shafts are arranged in gaps along the height direction of the base.

[0020] And / or, the adjusting assembly comprises an adjusting screw and an elastic piece, the adjusting screw is arranged on the mounting seat and the tensioning piece; the elastic piece is arranged on the adjusting screw and is used for automatically adjusting the distance between the tensioning piece and the end of the base.

[0021] In some embodiments of the utility model, opposite sides of the mounting seat are respectively provided with sliding grooves, and opposite ends of each roller shaft of each tensioning mechanism are slidably inserted into the corresponding sliding grooves;

[0022] And / or, the tensioning member comprises a base plate and a plurality of hook portions, the hook portions are arranged on one side of the base plate close to the base, and the end of each roller shaft is hooked with the hook portions.

[0023] In some embodiments of the utility model, each roller shaft comprises a transmission section and two mounting sections, and the two mounting sections are respectively connected to opposite ends of the transmission section.

[0024] The sealing belt is arranged on the transmission section, the mounting sections are slidingly inserted into the corresponding sliding grooves of the mounting seats, and the mounting sections are hooked by the corresponding hook portions of the tensioning member, so that the roller shafts can move together with the tensioning member when the tensioning member moves along the length direction of the base.

[0025] In some embodiments of the utility model, each mounting seat comprises:

[0026] An end cover is located at the end of the base and surrounds the mounting cavity.

[0027] Two fixed plates are arranged opposite to each other in the mounting cavity, and the sliding grooves are arranged on each fixed plate.

[0028] A cover plate is arranged on the end cover to cover the mounting cavity.

[0029] In some embodiments of the utility model, a groove is recessed in the bottom of the base along the length direction of the base, and a part of the sealing belt is accommodated in the groove, so that the sealing belt is sleeved on the bottom of the base.

[0030] In some embodiments of the utility model, the linear module further comprises a pressing member arranged at the connection between the end of the sealing belt and the sliding table, for strengthening the connection strength between the sealing belt and the sliding table.

[0031] In some embodiments of the utility model, the base has a U-shaped structure, and the sliding rails are arranged on the opposite side walls of the inner cavity of the base, and the sliding table is slidingly connected to the base through the sliding rails.

[0032] And / or, the driving assembly is a linear motor assembly.

[0033] Compared with the prior art, the linear module provided in the embodiments of the utility model has the following beneficial effects:

[0034] The linear module sets the sealing belt on the bottom of the base, and winds the sealing belt around the roller shafts of the two tensioning mechanisms to form a belt transmission structure between the sealing belt and the roller shafts, and connects the two ends of the sealing belt to the opposite sides of the sliding table respectively, so that the sliding table, the sealing belt, the tensioning mechanisms and the base jointly enclose the inner cavity of the base into a fixed sealing space, and the sealing belt moves synchronously with the sliding table, on the one hand, the sealing belt can always seal the inner cavity of the base during the sliding of the sliding table, so as to always separate the sliding table and the driving assembly, and the machining debris falling on the sealing belt can move synchronously with the sliding table, and will not be stuck between the sealing belt and the sliding table, and will not fall into the inner cavity of the base, which is beneficial to improve the dustproof effect and ensure the smooth running of the sliding table.

[0035] On the other hand, the friction between the sealing belt and the sliding table is small, so that the sealing belt is not easy to deform, so that the sealing belt and the base are not easy to appear gap, and the dust generated by the linear module itself is smaller, which is also beneficial to obtain better dustproof effect, suitable for high requirement dust-free environment, and beneficial to improve the service life of the sealing belt. In another aspect, the roller shaft of the tensioning mechanism located at the end of the base can not only play the function of the pulley of the sealing belt, but also play the role of tensioning the sealing belt, so that the roller shaft has multiple functions, which is beneficial to simplify the overall structure and reduce the occupied space and processing difficulty of the linear module. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the scheme in the present application, the drawings needed in the following embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments or corresponding prior art of the present application, and other drawings can also be obtained by those skilled in the art without creative labor. Among them:

[0037] Figure 1 is a schematic diagram of the three-dimensional structure of the linear module in the example of the present application;

[0038] Figure 2 is a plane cross-sectional view of the linear module in the example of the present application;

[0039] Figure 3 is a schematic diagram of the three-dimensional explosion of the linear module in the example of the present application;

[0040] Figure 4 is a schematic diagram of the three-dimensional structure of the tensioning mechanism after removing the cover plate in the example of the present application;

[0041] Figure 5 is Figure 4 a schematic diagram of the three-dimensional explosion of the tensioning mechanism.

[0042] The reference signs in the drawings are as follows:

[0043] 100, linear module;

[0044] 1, base; 11, inner cavity; 111, opening; 12, groove; 13, slide rail;

[0045] 2, slide table; 3, driving assembly;

[0046] 4, tensioning mechanism; 41, tensioning assembly; 411, mounting seat; 4111, end cover; 4112, fixing plate; 4113, cover plate; 4114, mounting cavity; 4115, sliding groove; 412, tensioning piece; 4121, base plate; 4122, hook portion; 413, adjusting assembly; 4131, adjusting screw; 4132, elastic piece; 42, roller shaft; 421, transmission section; 422, mounting section;

[0047] 5, sealing strip; 6, pressing piece; 7, photoelectric switch; 8, induction sheet; 9, buffer limiting piece. DETAILED DESCRIPTION

[0048] Unless otherwise defined, 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 in the description herein is for describing particular embodiments only and is not intended to be limiting of the application, for example, the terms "length", "width", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like specify relative positions according to the orientations shown in the drawings and are merely used for convenience in describing specific embodiments and are in no way intended to limit the present application.

[0049] The terms "comprise", "have" and any variations thereof in the specification and claims of the application and in the above description of the drawings are intended to cover not exclusive inclusion; the terms "first", "second" and the like in the specification and claims of the application or in the above description of the drawings are used to distinguish different objects, not to describe a specific order. The meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0050] In the specification and claims of the application and in the above description of the drawings, when an element is referred to as "fixed to" or "mounted to" or "provided to" or "connected to" another element, it can be directly or indirectly on the other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to the other element.

[0051] Furthermore, references to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0052] The present invention provides a linear module 100, such as Figures 1 to 3 As shown, the linear module 100 includes a base 1, a slide bar, a drive assembly 3, a tensioning mechanism 4 and a sealing belt 5. The base 1 is provided with an inner cavity 11, wherein the top of the inner cavity 11 has an opening 111. The slide 2 is connected to the base 1 at the opening and along the length direction of the base 1. For example, Figure 3 As shown, the base 1 has a U-shaped structure, wherein slide rails 13 are provided on the opposite side walls of the inner cavity 11 of the base 1, and the slide 2 can be slidably connected to the base 1 via the slide rails 13. Of course, in other examples, the base 1 can also have other suitable shapes and structures, which will not be repeated here.

[0053] In the embodiment of the present utility model, as Figure 2 As shown, the drive assembly 3 is built into the inner cavity 11 of the base 1 and is used to drive the slide 2 to move along the base 1. Exemplarily, the drive assembly 3 is a linear motor assembly, wherein the linear motor assembly is built into the inner cavity 11 along the length of the base 1 and is connected to the bottom of the slide 2 to directly drive the slide 2 to move along the length of the base 1. Of course, in other examples, the drive assembly 3 can also have other suitable structures, which will not be repeated here.

[0054] like Figures 1 to 3 As shown, two tensioning mechanisms 4 are provided, each of which includes a tensioning assembly 41 and a roller 42 provided on the tensioning assembly 41. The tensioning assembly 41 of one tensioning mechanism 4 is provided at one end opposite to the base 1, for driving the corresponding roller 42 away from or toward the end of the base 1; the tensioning assembly 41 of the other tensioning mechanism 4 is provided at the other end opposite to the base 1, for driving the corresponding roller 42 away from or toward the end of the base 1.

[0055] like Figure 2 and Figure 3 As shown, the sealing belt 5 is annular. The sealing belt 5 is sleeved on the bottom of the base 1 and wound around the rollers 42 of the two tensioning mechanisms 4 to form a belt transmission structure. The two ends of the sealing belt 5 are connected to opposite sides of the slide 2 to seal the opening 111 and the inner cavity 11, and the sealing belt 5 moves along the slide 2 along its circulation path.

[0056] Understandably, the sliding table 2, the sealing belt 5, the tensioning mechanism 4 and the base 1 can jointly enclose the inner cavity 11 of the base 1 into a fixed sealing space, wherein, when the driving assembly 3 drives the sliding table 2 to slide along the base 1, the sealing belt 5 can move together with the sliding table 2 to form a ring-shaped belt transmission movement relative to the base 1, so that, on the one hand, the sealing belt 5 can seal the inner cavity 11 of the base 1 during the sliding process of the sliding table 2, so as to always separate the sliding table 2 and the driving assembly 3, and the machining debris falling on the sealing belt 5 can move synchronously with the sliding table 2, and will not be stuck between the sealing belt 5 and the sliding table 2, and will not fall into the inner cavity 11 of the base 1, which is beneficial to improve the dustproof effect and ensure the smooth running of the sliding table 2.

[0057] On the other hand, the friction between the sealing belt 5 and the sliding table 2 is small, so that the sealing belt 5 is not easy to deform, so that the sealing belt 5 and the base 1 are not easy to appear gap, and the dust generated by the linear module 100 itself is smaller, which is also beneficial to obtain better dustproof effect, suitable for high requirement dust-free environment, and beneficial to improve the service life of the sealing belt 5. In another aspect, the roller shaft 42 of the tensioning mechanism 4 located at the end of the base 1 can not only play the function of the pulley of the sealing belt 5, but also play the role of tensioning the sealing belt 5, so that the roller shaft 42 has multiple functions, which is beneficial to simplify the overall structure, and reduce the occupied space and processing difficulty of the linear module 100.

[0058] It should be noted that the sealing belt 5 described herein includes but is not limited to being made of steel, cloth and the like.

[0059] It should be noted that, in particular in the embodiment, as shown in Figure 1 The linear module 100 further comprises a photoelectric switch 7, an induction sheet 8 and a buffer limiting piece 9, wherein the photoelectric switch 7 is arranged on the outer side wall of the base 1, the induction sheet 8 is arranged on the sliding table 2, and the buffer limiting piece 9 is arranged on the top of the base 1. During the sliding process of the sliding table 2, if the induction sheet 8 encounters the photoelectric switch 7, it indicates that it has reached a corresponding limit position. At this time, the sliding table 2 can also be in contact with the buffer limiting piece 9, so as to buffer the sliding table 2 through the buffer limiting piece 9, so as to ensure that the sliding table 2 stops slowly. Of course, in other embodiments, the linear module 100 can also use other existing or newly created structures to realize sliding limiting.

[0060] In order for those skilled in the art to better understand the technical scheme of the present application, the technical scheme of the present application will be described below in conjunction with the accompanying Figures 1 to 5 , and a clear and complete description of the technical scheme in the embodiment of the present application.

[0061] In some embodiments of the present application, as shown in Figure 2 and Figure 3As shown in the drawings, in order to further reduce the length of the linear module 100, the roller shaft 42 of each tensioning mechanism 4 is provided with two, and the two roller shafts 42 are arranged in a gap and side by side along the height direction of the base 1. In this way, the diameter of a single roller shaft 42 can be made smaller, which is beneficial to reduce the occupied space of the tensioning mechanism 4, thereby facilitating the reduction of the total length of the linear module 100.

[0062] As shown in the drawings, in some embodiments of the utility model, Figure 2 and Figure 3 As shown in the drawings, in order to realize the tensioning function of the sealing tape 5 by the tensioning assembly 41, the tensioning assembly 41 comprises a mounting seat 411, a tensioning piece 412 and an adjusting assembly 413, wherein the mounting seat 411 is internally formed with a mounting cavity 4114, the mounting seat 411 is arranged at the end of the base 1, and the roller shaft 42 is slidingly mounted in the mounting cavity 4114 along the length direction of the base 1. The tensioning piece 412 is movably arranged in the mounting cavity 4114 and is used to drive the roller shaft 42 to slide relative to the mounting seat 411. The adjusting assembly 413 is arranged between the mounting seat 411 and the tensioning piece 412 and is used to adjust the distance between the tensioning piece 412 and the end of the base 1. Understandably, the mounting cavity 4114 is formed in the mounting seat 411, and the roller shaft 42, the tensioning piece 412 and the like are arranged in the mounting cavity 4114. On the one hand, it is beneficial to further reduce the occupied space of the linear module 100, and on the other hand, it is beneficial to improve the dustproof effect of the linear module 100.

[0063] Understandably, when it is necessary to tension the sealing tape 5, the adjusting assembly 413 can be directly adjusted to move the tensioning piece 412 in the mounting cavity 4114 away from the end of the base 1. During the movement of the tensioning piece 412, the tensioning piece 412 can synchronously drive the roller shaft 42 to slide away from the end of the mounting seat 411, thereby realizing the effect of tensioning the sealing tape 5 outward.

[0064] It should be noted that the structure of the adjusting assembly 413, the mounting seat 411 and the like and the overall structure of the tensioning assembly 41 can adopt existing or newly created structures, which are not limited to this, and will not be described here.

[0065] As shown in the drawings, in some embodiments of the utility model, Figures 2 to 4 As shown in the drawings, in order to further reduce the length of the linear module 100, the roller shaft 42 of each tensioning mechanism 4 is provided with two, and the two roller shafts 42 are arranged in a gap and side by side along the height direction of the base 1. In this way, the diameter of a single roller shaft 42 can be made smaller, which is beneficial to reduce the occupied space of the tensioning mechanism 4, thereby facilitating the reduction of the total length of the linear module 100.

[0066] and / or, in some embodiments, as shown in the drawings, Figures 2 to 5As shown, the adjusting assembly 413 comprises an adjusting screw 4131 and an elastic member 4132, the adjusting screw 4131 is arranged on the mounting base 411 and the tensioning member 412. The elastic member 4132 is arranged on the adjusting screw 4131 and is used for automatically adjusting the distance between the tensioning member 412 and the end of the base 1. Understandably, when the sealing belt 5 is slightly loose, the elastic force of the elastic member 4132 can be directly relied on to realize the automatic tensioning of the sealing belt 5.

[0067] As shown in the drawings, Figure 2 and Figure 4 In this embodiment, the adjusting screw 4131 is screwed on the mounting base 411, one end of the elastic member 4132 is connected to the tensioning member 412, and the other end of the elastic member 4132 is connected to the adjusting screw 4131. In this way, the elastic force of the elastic member 4132 can be adjusted by rotating the adjusting screw 4131, so that the sealing belt 5 can be in a tight state at all times, thereby reducing the probability of a gap between the sealing belt 5 and the base 1 when the speed of the sliding table 2 fluctuates greatly. Moreover, the length of the sealing belt 5 can be effectively ensured to remain unchanged during long-term use of the linear module 100, which is beneficial to ensuring the dustproof effect.

[0068] In some embodiments of the utility model, as shown in the drawings, Figure 5 In order to realize the sliding of the roller shaft 42, the mounting base 411 is provided with a sliding groove 4115 on each side, and the opposite ends of each roller shaft 42 of each tensioning mechanism 4 are slidingly inserted into the corresponding sliding groove 4115. As shown in the drawings, when two roller shafts 42 are arranged on each tensioning mechanism 4, two sliding grooves 4115 are arranged on one side of the mounting base 411, and two sliding grooves 4115 are also arranged on the other side of the mounting base 411. The same end of the two roller shafts 42 is movably inserted into the two sliding grooves 4115 on one side of the mounting base 411, and the other same end of the two roller shafts 42 is movably inserted into the two sliding grooves 4115 on the other side of the mounting base 411.

[0069] In some embodiments, as shown in the drawings, Figure 4 and Figure 5 In order to realize that the tensioning member 412 can drive the roller shaft 42 to slide relative to the mounting base 411, the tensioning member 412 comprises a base plate 4121 and a plurality of hook portions 4122, the hook portions 4122 are arranged on the side of the base plate 4121 close to the base 1, and the end of each roller shaft 42 is hooked with a hook portion 4122.

[0070] As shown in the drawings, Figure 5As shown, each roller shaft 42 comprises a transmission segment 421 and two mounting segments 422 connected to opposite ends of the transmission segment 421. When the sealing belt 5 is wound around the roller shaft 42, the sealing belt 5 is wound around the transmission segment 421 of the roller shaft 42, so that the sealing belt 5 is stretched by the two sealing belts 5 arranged above and below, facilitating the tensioning of the sealing belt 5. In addition, the mounting segment 422 of the roller shaft 42 is slidingly inserted into the corresponding sliding groove 4115 of the mounting seat 411, and is hooked by the corresponding hook portion 4122 of the tensioning member 412, so that the roller shaft 42 moves together with the tensioning member 412 when the tensioning member 412 moves along the length direction of the base 1. It should be noted that the diameter of the transmission segment 421 is greater than the diameter of the mounting segment 422, which facilitates ensuring that the structure of the tensioning mechanism 4 is more compact, thereby facilitating further reducing the occupied space of the linear module 100.

[0071] In some embodiments of the present application, as shown in Figures 3 to 5 As shown, each mounting seat 411 comprises an end cover 4111, a fixed plate 4112 and a cover plate 4113. The end cover 4111 is located at the end of the base 1 and surrounds a mounting cavity 4114. The fixed plate 4112 is provided with two fixed plates 4112 arranged opposite to each other in the mounting cavity 4114, and each fixed plate 4112 is provided with a sliding groove 4115. The cover plate 4113 is arranged on the end cover 4111 to cover the mounting cavity 4114.

[0072] Exemplarily, the fixed plate 4112 is arranged opposite to each other on the end cover 4111 in the mounting cavity 4114, and the end cover 4111 is mounted on the end of the base 1 through the fixed plate 4112. The mounting segments 422 at both ends of each roller shaft 42 are slidingly inserted into the corresponding sliding grooves 4115 of the two fixed plates 4112. The tensioning member 412 is located on the side of the roller shaft 42 away from the base 1, and the hook portion 4122 of the tensioning member 412 hooks the mounting segments 422 of each roller shaft 42. The base plate 4121 of the tensioning member 412 is connected to one end of the elastic member 4132, and the adjusting screw member 4131 screwed on the end cover 4111 is connected to the other end of the elastic member 4132, so that the elastic member 4132 can be elastically deformed along the length direction of the base 1.

[0073] In some embodiments of the present application, as shown in Figure 2 To ensure that the sealing belt 5 and the base 1 are more stably and reliably sleeved, and to protect the sealing belt 5 to reduce its wear, a groove 12 is recessed in the bottom of the base 1 along the length direction of the base 1. A part of the sealing belt 5 is accommodated in the groove 12, so that the sealing belt 5 is sleeved on the bottom of the base 1. In other words, the part of the sealing belt 5 sleeved on the bottom of the base 1 is directly accommodated in the groove 12. In this way, the sealing belt 5 can be hidden in the groove 12, reducing the friction between the sealing belt 5 and the outside. In addition, the sealing belt 5 can also be limited by the groove 12, ensuring that the sealing belt 5 does not move randomly at the bottom of the base 1, facilitating to improve the stability and reliability of the installation of the sealing belt 5.

[0074] In some embodiments of the present application, as shown in Figure 1 and Figure 3 To improve the connection strength between the sealing belt 5 and the sliding table 2, and ensure that the sealing belt 5 moves stably and reliably with the sliding table 2, the linear module 100 further comprises a pressing piece 6, which is arranged at the connection between the end of the sealing belt 5 and the sliding table 2. Exemplarily, the pressing piece 6 can be pressed on the end of the sealing belt 5, and the pressing piece 6 and the end of the sealing belt 5 are connected to the sliding table 2 through a screw.

[0075] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the scope of the claims of the present application.

Claims

1. A linear module, characterized by, The linear module comprises: a base, which is concave and has an inner cavity; a sliding table, which is connected to the base at the opening and slides along the length of the base; a driving assembly, which is built in the inner cavity and is used to drive the sliding table to move along the base; two tensioning mechanisms, each of which comprises a tensioning assembly and a roller shaft arranged on the tensioning assembly, and the tensioning assemblies of the two tensioning mechanisms are arranged at opposite ends of the base respectively, and are used to drive the corresponding roller shafts to move away from or close to the end of the base; a sealing belt, which is annular, is sleeved on the bottom of the base, is arranged around the roller shafts of the two tensioning mechanisms to form a belt transmission structure with the roller shafts, and the two ends of the sealing belt are connected to the opposite sides of the sliding table respectively to cover the opening and the inner cavity and make the sealing belt move along the circulation path of the sealing belt with the sliding table.

2. Linear module according to claim 1, characterized in that The roller shafts of each tensioning mechanism are provided with two roller shafts, which are arranged in a gap along the height of the base.

3. Linear module according to claim 1, characterized in that The tensioning assembly comprises: a mounting seat, which has a mounting cavity inside, is arranged at the end of the base, and has the roller shafts slidingly mounted in the mounting cavity along the length of the base; a tensioning piece, which is movably built in the mounting cavity and is used to drive the roller shafts to slide relative to the mounting seat; an adjusting assembly, which is arranged on the mounting seat and the tensioning piece and is used to adjust the distance between the tensioning piece and the end of the base.

4. Linear module according to claim 3, characterized in that The roller shafts of each tensioning mechanism are provided with two roller shafts, which are arranged in a gap along the height of the base. And / or, the adjusting assembly comprises an adjusting screw and an elastic piece, the adjusting screw is arranged on the mounting seat and the tensioning piece, and the elastic piece is arranged on the adjusting screw and is used to automatically adjust the distance between the tensioning piece and the end of the base.

5. Linear module according to claim 4, characterized in that The opposite sides of the mounting seat are respectively provided with sliding grooves, and the opposite ends of the roller shafts of each tensioning mechanism are slidingly inserted into the corresponding sliding grooves; And / or, the tensioning piece comprises a base plate and a plurality of hook portions, the hook portions are arranged on the side of the base plate close to the base, and the end of each roller shaft is hooked with the hook portion.

6. Linear module according to claim 5, characterized in that Each roller shaft comprises a transmission section and two mounting sections, and the two mounting sections are respectively connected to the opposite ends of the transmission section. The sealing belt is arranged around the transmission section, the mounting sections are slidingly inserted into the corresponding sliding grooves of the mounting seat and are hooked by the corresponding hook portions of the tensioning piece, so that the roller shafts can move with the tensioning piece when the tensioning piece moves along the length of the base.

7. The linear module according to claim 5, characterized in that Each mounting seat comprises: an end cover, which is located at the end of the base and surrounds the mounting cavity; two fixing plates, which are arranged opposite to each other in the mounting cavity, and each fixing plate is provided with the sliding groove; a cover plate, which covers the end cover to cover the mounting cavity.

8. The linear module of claim 1, wherein, The bottom of the base is concave along its length direction, and a part of the sealing band is accommodated in the concave groove, so that the sealing band is sleeved on the bottom of the base.

9. The linear module of claim 1, wherein, The linear module further comprises a pressing piece arranged at the joint between the end of the sealing band and the sliding table, for strengthening the connection strength between the sealing band and the sliding table.

10. The linear module of claim 1, wherein, The base is in a U-shaped structure, and opposite two side cavity walls of the inner cavity of the base are provided with sliding rails, and the sliding table is slidingly connected to the base through the sliding rails. And / or, the driving assembly is a linear motor assembly.

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