CN110480411B - Telescopic displacement limiting device, scale telescopic shield and machine tool - Google Patents
Telescopic displacement limiting device, scale telescopic shield and machine tool Download PDFInfo
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- CN110480411B CN110480411B CN201910882166.3A CN201910882166A CN110480411B CN 110480411 B CN110480411 B CN 110480411B CN 201910882166 A CN201910882166 A CN 201910882166A CN 110480411 B CN110480411 B CN 110480411B
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 16
- 238000005520 cutting process Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 25
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 13
- 239000012943 hotmelt Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/08—Protective coverings for parts of machine tools; Splash guards
- B23Q11/0825—Relatively slidable coverings, e.g. telescopic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Buckles (AREA)
Abstract
A telescopic displacement limiting device, a scale telescopic shield and a machine tool. According to the telescopic protection cover, the limiting belts are fixed at the inner side ends of the supporting plates of the scale telescopic protection cover through the buckling structures, and the stretching distance between the supporting plates is limited through the limiting belts. In the process that the limit belt is stretched and gradually straightened, the opening of the buckle structure is pulled by the limit belt to be opened, and the pressing structure is more tightly pressed inwards against the support plate along with the opening to prevent the limit belt from being separated from the support plate. The structure of the invention can be directly clamped with the inner side of the supporting plate downwards, and is convenient for assembly. In the assembly process, the mounting position of each supporting plate relative to the limiting belt is only required to be determined once, and the fixing of the limiting belt can be accurately realized by direct clamping at the mounting position. The flexible connecting material is high in assembly efficiency and accuracy, and can be prevented from being broken or falling off due to direct stress of the flexible connecting material on the outer side of the supporting plate by the limitation of the limiting belt, so that the service life of the scale telescopic shield is prolonged.
Description
Technical Field
The invention relates to the field of machine tool protection devices, in particular to a telescopic displacement limiting device, a scale telescopic shield and a machine tool.
Background
The scale telescopic shield is a common protection device on the machine tool, is arranged on the telescopic structure of the machine tool, prevents waste materials generated during machine tool processing from entering the machine tool, and can also avoid the injury caused by direct contact between operators and the telescopic structure of the machine tool.
The inner side of the scale expansion shield is provided with a supporting plate for supporting each scale, the scales are fixed on the supporting plate, flexible connecting materials such as woven belts, inner liners and the like are connected between the supporting plates, so that the supporting plates and the scales connected with the supporting plates are connected into a whole.
In order to achieve reliable connection between scales, flexible connection materials are required to be fixed with the support plates on the inner sides of the scale telescopic shields. Because the whole flexible protection cover of scale is connected into a whole through this flexible connection material, consequently, fixed firm degree and machining precision become the key factor that influences protection cover life-span and protection effect between flexible connection material and the backup pad.
In the existing mode, the flexible connecting material is directly fixed on the supporting plate in a hot-melt welding mode. Under the hot-melt welding mode, because of large manual error, the accurate hot-melt welding position is difficult to grasp, and the machining precision is difficult to guarantee. The scale-shaped telescopic shield manufactured in the prior art is easy to misplace due to the deviation of hot-melt welding of flexible connecting materials. If the distances between the flexible connection materials between the support plates at all levels deviate, the distances between the scale structures connected with the support plates deviate, so that the scales deviate to one side to incline or can not completely cover the internal structure because of overlarge distances, and the internal structure is sealed.
In addition, in the existing hot-melt welding method, each supporting plate needs to be separately measured on the connection position of the supporting plate and the flexible connection material before hot-melt welding, and the hot-melt welding operation of each supporting plate needs to be separately performed, so that the assembly efficiency of the supporting plate is low.
Moreover, the existing scale telescopic shield realizes the connection between the supporting plates only through a single flexible connection material. The flexible connecting material is easy to age, and cannot bear the tensile force of the scale telescopic shield, so that the flexible connecting material is broken or falls off, and the whole scale telescopic shield is broken, so that the protection of a machine tool telescopic structure is lost.
Disclosure of Invention
The invention provides a telescopic displacement limiting device, a scale telescopic shield and a machine tool, aiming at the defects of the prior art. The invention adopts the following technical scheme.
First, to achieve the above object, there is provided a telescopic displacement limiting device provided in a scale-shaped telescopic shield, comprising: the limiting belts are respectively connected with the supporting plates of the scale telescopic shields, and the length of the limiting belts is not more than the length of the scale telescopic shields in the fully unfolded state; the clamping structure is arranged on each supporting plate and used for fixing the limiting belt on the supporting plate; the stretching distance between the adjacent support plates is not more than the length of the limit belt arranged on the adjacent support plates.
Optionally, in the above telescopic displacement limiting device, the lateral part of the fastening structure is further provided with a pressing structure, the pressing structure is inwards abutted against the limiting belt, the fastening structure is pulled by the limiting belt and is gradually opened in the process that the limiting belt is gradually straightened, the pressing structure is more tightly and inwards abutted against the supporting plate along with the opening of the fastening structure, so that the limiting belt is prevented from being separated from the inner side end part of the supporting plate, and the scale telescopic shield is limited to be continuously stretched.
Optionally, in the above telescopic displacement limiting device, the fastening structure includes an opening, the fastening structure is fastened by the opening at an inner end of the supporting plate, the pressing structures are distributed at two sides of the opening, and the two sides of the supporting plate are respectively fixed by being abutted inwards.
Optionally, in the above telescopic displacement limiting device, the pressing structures are uniformly distributed on two opposite sides of the opening, and one ends of each pair of pressing structures, far away from the opening, are close to each other, so that the limiting belt is abutted against the side wall of the supporting plate.
Optionally, in the above telescopic displacement limiting device, the pressing structure is formed by cutting a side wall of the fastening structure, one end of the pressing structure, which is close to the opening, is connected with the side wall of the fastening structure into a whole, and one end of the pressing structure, which is far away from the opening, is bent towards the inside of the fastening structure.
Optionally, in the above telescopic displacement limiting device, one end of the pressing structure away from the opening is provided with at least one sharp corner.
Optionally, in the above telescopic displacement limiting device, the pressing structure is a triangular pressing piece, and at least 4 pressing pieces are uniformly arranged on two sides of each fastening structure along an axis of the fastening structure.
Optionally, in the above telescopic displacement limiting device, a mounting groove is further formed in a position of the end portion of the supporting plate corresponding to the pressing structure, and when the limiting belt is fixed to the inner side end portion of the supporting plate by the fastening structure, at least one sharp corner of the pressing structure is clamped in the mounting groove.
Meanwhile, the invention also provides a scale telescopic shield, and the telescopic displacement limiting device is arranged between each supporting plate in the scale telescopic shield.
Based on the structure, the invention also provides a machine tool which comprises the scale telescopic shield.
Advantageous effects
According to the invention, the limiting belt is fixed between the inner side end part of the supporting plate of the scale telescopic shield and the clamping structure through the clamping structure, and the limiting belt is propped inwards by the propping structure at the inner side of the clamping structure. Because the pushing structure is inwards gradually bent towards the inside of the buckle structure from the opening of the buckle structure, when the limit belt is gradually straightened, the opening is pulled by the limit belt to be opened, and the sharp angle of the pushing structure is more tightly and inwards abutted against the supporting plate along with the opening to prevent the limit belt from being separated from the supporting plate. Compared with the prior structure, the fixing of the limiting belt is tighter, so that the stretching travel range between the supporting plates can be effectively limited through the limiting belt, the flexible connecting materials outside the supporting plates are prevented from being broken or falling off due to direct stress, and the service life of the whole scale telescopic shield is prolonged.
In addition, due to the design of the buckle structure, the structure can be directly clamped with the inner side end part of the supporting plate downwards, the assembly is convenient, and the deviation caused by hot melting welding can not exist. In the assembly process, the mounting position of each supporting plate relative to the limiting belt is only required to be determined once, and the fixing of the limiting belt can be accurately realized by direct clamping at the mounting position. The invention has high assembly efficiency, high precision and more reliable fixation.
In order to further improve the firmness of the assembly of the limit bands, the two opposite abutting structures in the buckle structure are uniformly distributed on two sides of the opening of the buckle structure, one end, far away from the opening, of each pair of abutting structures is close to each other and provided with a sharp corner, and the limit bands are simultaneously abutted against two side walls of the supporting plate. Therefore, acting force can be symmetrically applied to the limiting belts on two sides of the supporting plate, displacement of the limiting belts caused by stress on one side is avoided, deviation is generated, and the problem that the clamping structure is loosened due to stress on one side is avoided.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, and do not limit the invention. In the drawings:
FIG. 1 is a schematic view of a snap-in structure in a telescopic displacement limiting device for a scale telescopic shield of the present invention;
FIG. 2 is a side view of the snap structure of FIG. 1;
FIG. 3 is a schematic illustration of the snap-fit construction assembly process in the telescopic displacement limiting device of the present invention;
FIG. 4 is a schematic view of the telescopic displacement limiting device of the present invention mounted inside a scale telescopic shield;
fig. 5 is an enlarged partial schematic view of the telescopic displacement limiting device in the circle of fig. 4.
In the figure, 1 represents a buckle structure; 2 represents a pressing structure; 3 represents an opening; 4 denotes a cutting position; 5 denotes a support plate; 6 represents a limit belt; 7 denotes a mounting groove; 8 represents a flexible connection material; 9 denotes a scale.
Detailed Description
In order to make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present invention fall within the protection scope of the present invention.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The meaning of "and/or" in the present invention means that each exists alone or both exist.
The meaning of 'inner and outer' in the invention refers to that the direction from the scale to the buckle structure is inner relative to the whole scale telescopic shield, and vice versa; and not to a particular limitation of the mechanism of the device of the present invention.
"connected" as used herein means either a direct connection between components or an indirect connection between components via other components.
The meaning of up and down in the invention is that scales are placed at the bottom, the connecting direction of a supporting plate and a fastening structure is the upper direction, and an opening of the fastening structure is downwards clamped at the inner side end part of the supporting plate, but the invention is not limited by the mechanism of the device.
The invention provides a scale telescopic shield aiming at a telescopic structure of a machine tool, which realizes the protection of the telescopic structure of the machine tool. The flexible shield is used for arranging the scales outside, and flexible connecting materials and supporting plates are assembled on the inner sides of the scales. The scales are fixed on the supporting plates and are connected into a whole through flexible connecting materials connected between the supporting plates, and the scales correspondingly shrink or stretch along with the movement of the telescopic structure of the random bed. Different from the existing scale telescopic shield, the scale telescopic shield is internally provided with:
the limiting belts 6 are respectively connected with the supporting plates 5 of the scale telescopic shields, and the length of the limiting belts is not more than the length of the scale telescopic shields in the fully unfolded state;
the buckling structure 1 is arranged on each supporting plate and is used for fixing the limiting belt 6 on the supporting plate 5;
the stretching distance between the adjacent support plates 5 does not exceed the length of the limit belt arranged on the adjacent support plates.
The buckle structure 1 can be shown by referring to fig. 1, and is clamped at the inner side end of the supporting plate inside the scale telescopic shield in the mode shown in fig. 3, and used for fixing the limiting belt inside the scale telescopic shield and limiting the stretching stroke range between the supporting plates. The limiting belt is connected with each supporting plate, and the length of the limiting belt is shorter than the ultimate stretching length of the scale telescopic shield, so that the limiting belt actually replaces flexible connecting materials connected with the outer side end parts of the supporting plates, realizes the connection of the scale telescopic shield, realizes the limitation of the telescopic travel range of the scale telescopic shield, and avoids the excessive stretching between scales to loosen or expose the internal structure of the scale telescopic shield.
In order to ensure the firmness of the connection between the support plates of the scale-shaped telescopic shield, the limit belt 6 can be made of nylon materials similar to the safety belt for vehicles so as to provide better tensile strength.
The limiting belt for the scale telescopic shield is fixed at the inner end part of the supporting plate by a buckling structure shown in fig. 2. As shown in fig. 2, the lower end of the buckle structure is provided with an opening 3, and the buckle structure is clamped at the inner end part of the supporting plate 5 downwards through the opening 3 and is used for fixing the limit belt 6 between the supporting plate 5 of the scale telescopic shield and the buckle structure 1;
the lateral part of buckle structure still is provided with and supports pressure structure 2, support pressure structure 2 distributes in the both sides of opening 3, follow respectively the both sides of backup pad inwards butt is fixed spacing area 6 will spacing area 6 butt is in on the backup pad 5, prevent spacing area 6 breaks away from the inboard tip of backup pad 5.
In one implementation, the fastening structure 1 may be implemented by a metal sheet bent into a U shape, for example, a stainless steel sheet. The opening of which is arranged at the lower end. The opening position of the fastening structure 1 may be configured to be slightly turned outwards, so as to facilitate the supporting plate 5 and the limit belt 6 covered by the inner end thereof to enter the fastening structure.
In the assembly process, referring to fig. 3 or 5, the scale is first placed on the horizontal work surface with the support plate inside the scale 9 standing upward. The intervals between the scales and the supporting plates are adjusted to be arranged at equal intervals, mutual overlapping stretching allowance is reserved between adjacent scales, the flexible connecting materials 8 between the scales are not fully stretched, and the stretching allowance or the wrinkling degree of the flexible connecting materials 8 between the scales at all levels is equal or at least is close to each other. Then, according to the design requirement, the position of connection between the limiting belt 6 which is required to be arranged on the inner side of the supporting plate and the supporting plate is uniformly measured, and marks are made. Finally, according to the mark, the limit belt is paved on the inner side of the supporting plate corresponding to the connecting position of the limit belt, and the buckle structure is clamped into the position from the upper side, so that the fixing of the limit belt can be realized. The limiting belt is fixed in a buckling manner, and the buckling process can be realized by directly pressing or hammering by a tool, so that the machining error caused by hot-melt welding can be avoided.
In this scheme, the location process of hookup location between spacing area and the backup pad, accessible is taken according to the equidistant mark of assembly requirement at the spacing, then lays the spacing area according to the mark and realize in the inboard upper end of corresponding backup pad. The alignment mode is easy to operate, and deviation caused by measuring welding positions before each welding under traditional hot-melt welding can be effectively avoided. And after the positioning is accurate, the buckle structure can be arranged above the positioning position for marking, and an assembly worker can press and knock each buckle structure in sequence according to the installation sequence at one time, so that the assembly of the buckle structures 1 on all support plates is realized rapidly. Compared with the traditional mode, the assembly efficiency of the invention can be improved by more than 60%, and meanwhile, the positioning of the limit belt can be realized through one-time measurement marking, so that the assembly error of the invention can reach 1/N of the traditional assembly mode, wherein N is the total number of the support plates 5 contained in the scale telescopic shield.
In the implementation manner shown in fig. 1, in order to improve the fixing firmness of the limit belt, the side part of the buckle structure in the invention is also provided with a pressing structure 2. The pressing structure 2 is inwards abutted against the limit belt 6, the limit belt 6 is gradually far away from each other and stretched by the front support plate and the rear support plate, in the process of gradually straightening, the buckle structure 1 is gradually pulled by the limit belt 6 to be opened, the pressing structure 2 is more tightly and inwards abutted against the support plate 5 along with the opening of the buckle structure 1, the limit belt 6 is prevented from being separated from the inner side end part of the support plate 5, and the whole scale expansion shield is limited from the inside to be continuously stretched. Because the limit belt 6 is shorter than the ultimate stretching length of the scale telescopic shield, the flexible connecting material arranged on the outer side of the supporting plate in the scale telescopic shield is not pulled all the time in the stretching process, and therefore the flexible connecting material cannot be deformed under force or be damaged and broken under stretching. Therefore, as long as the strength of the internal limiting belt 6 is enough, or the internal damaged limiting belt can be replaced in time, the protective cover can be used for a long time, and the situation that the gap between scales is too large due to the loosening of the connecting structure, so that the internal structure is exposed is avoided.
Under the more preferred implementation mode, the propping structure 2 can be symmetrically distributed on two sides of the opening 3 of the buckle structure 1, is respectively arranged in the middle of two side walls of the buckle structure, and is respectively and inwards propped against and fixed on the limit belt 6 from two sides of the support plate. In this way, because the two sides of the buckle structure are symmetrical, whether the front stage supporting plate drives the front limiting belt to apply a traction force to the buckle structure or the rear stage supporting plate drives the rear limiting belt to apply a traction force to the buckle structure, the buckle structure 1 shown in fig. 1 can be fixed through the pressing structure corresponding to the side, so that the single-side stress of the buckle structure is prevented from being tilted and deformed.
Therefore, in order to ensure that the spacing belt is firmly installed, in this implementation manner, the pressing structures 2 are preferably uniformly distributed on two opposite sides of the opening 3, and one ends of each pair of pressing structures 2, which are far away from the opening 3, are close to each other, so that the spacing belt 6 abuts against the side wall of the supporting plate 5.
For matching the abutting action of the abutting structure, the end portion of the supporting plate 5 may further be provided with a mounting groove 7 shown in fig. 3 corresponding to the position of the abutting structure 2. When the buckle structure 1 fixes the limit belt at the end part of the supporting plate 5, the upper end of the pressing structure 2 is clamped in the mounting groove 7.
In this structure, during the press mounting process, the upper end of the pressing structure 2 away from the opening 3 can slide along the side wall of the support plate 5 from the inner end of the support plate 5 into the mounting groove 7, and the limit belt 6 is pressed and fixed from the outer side of the support plate into the mounting groove 7. And in the process that the outer side scales pull the inner supporting plates to be separated from each other, the pulling of the supporting plates to the limiting belt is resisted. Taking any group of support plates arranged adjacently at the front and rear 3 stages as an example, referring to fig. 4 and 5, in the process that the front and rear two stages or any stage of support plates pull the limit belt 6 away from the support plate 5 arranged in the middle, the opening 3 of the buckle structure is pulled straight by the limit belt 6 connected with the front and rear support plates to stretch out gradually, at this time, the upper end of the pressing structure 2 can turn along with the opening 3 due to the inward inclined angle of the upper end, so as to tightly and inwards abut against the support plate 5, and the angle of the pressing structure inwards abuts against the limit belt 6 can gradually trend to be perpendicular to the middle support plate along with the straight of the limit belts at the two sides. In extreme cases, the pressing structures at two sides of the opening are respectively pressed against the limiting belts on the supporting plate at 90 degrees relative to the front and back of the supporting plate, so that the limiting belts 6 are prevented from being separated from the supporting plate. That is, the amount of pressing force applied to the stopper belt by the stopper belt fixing device of the present invention is actually increased stepwise with the separation of the front and rear scales 9 or the support plate. Therefore, the limit belt can be more reliably fixed until the limit belt is pulled and broken due to the pressing of the end part of the pressing structure.
The pressing structure can be directly formed by cutting the side wall of the buckle structure 1. In this way, the end of the pressing structure, which is close to the opening 3, is connected with the side wall of the fastening structure 1 as a whole, and the end of the pressing structure, which is far away from the opening 3, is configured to bend towards the inside of the fastening structure 1.
In addition, the abutting structure can be realized by independently arranging the abutting piece arranged on the side wall of the buckle structure.
In any implementation manner, in order to realize tight butt against the limiting belt and improve the firmness of the installation of the limiting belt, one end of the pressing structure 2 away from the opening 3 can be further provided with at least one sharp corner. Therefore, in the process that the limiting belt is pulled to be directly separated from the inner side end part of the supporting plate, the sharp angle can be opposite to the sharp angle of the opposite side propping structure, the propping force is concentrated on one action point of the sharp angle tip, so that the stress of the limiting belt is more concentrated, and the clamping force of the limiting belt is improved.
In a simpler implementation manner, the pressing structure 2 may be designed as a triangular, quadrangular or arbitrary-shaped pressing piece with an inward bent upper vertex angle formed by cutting the side wall of the fastening structure, or the pressing structure 2 may also be designed as at least 4 or arbitrary-number inward bent pressing pieces formed by uniformly arranging and welding along the axes of two sides of the fastening structure 1. The upper end of the abutting piece far away from the opening is bent inwards, and the sharp angle at the upper end applies an acting force to the limit belt to fix the limit belt.
Therefore, the fixing effect of the buckle structure on the limit belt can be reinforced through the effect of the abutting piece, the limit belt is guaranteed to be firmly connected to the upper ends of the support plates, the stretching distance between the support plates is limited, the stable connection between scales is guaranteed, loosening or gaps do not occur, the flexible connecting material 8 close to the outer side in the scale telescopic shield does not bear stress in the whole compression or stretching process, and the service life of the flexible connecting material 8 is guaranteed.
The foregoing is a description of embodiments of the invention, which are specific and detailed, but are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention.
Claims (4)
1. A telescopic displacement limiting device disposed within a scale telescopic shield, comprising:
the limiting belts (6) are respectively connected with each supporting plate (5) of the scale telescopic shield, and the length of the limiting belts is not more than that of the scale telescopic shield in a fully unfolded state;
the clamping structure (1) is arranged on each supporting plate and is used for fixing the limiting belt (6) on the supporting plate (5);
the stretching distance between the adjacent supporting plates (5) is not more than the length of the limiting belt arranged on the adjacent supporting plates;
the lateral part of the buckle structure is also provided with a propping structure (2), the propping structure (2) is propped inwards against the limit belt (6), in the process that the limit belt (6) is gradually straightened, the buckle structure (1) is pulled by the limit belt (6) to be gradually opened, the propping structure (2) is propped inwards against the support plate (5) more tightly along with the opening of the buckle structure (1), so that the limit belt (6) is prevented from being separated from the inner side end part of the support plate (5), and the scale expansion shield is limited to be continuously stretched;
the clamping structure (1) comprises an opening (3), the clamping structure (1) is clamped at the inner side end part of the supporting plate (5) through the opening (3), the propping structures (2) are distributed on two sides of the opening (3), and the limiting belt (6) is respectively propped inwards from two sides of the supporting plate to be fixed;
the abutting structures (2) are distributed on two sides of the opening (3) in a pairwise opposite and uniform manner, one end, far away from the opening (3), of each pair of abutting structures (2) is close to each other, and the limiting belt (6) is abutted against the side wall of the supporting plate (5);
the pressing structures (2) are triangular pressing pieces, and at least 4 pressing pieces are uniformly arranged on two sides of each buckling structure (1) along the axis of each buckling structure (1);
the end part of the supporting plate (5) is provided with a mounting groove (7) corresponding to the position of the pressing structure (2), and when the limiting belt is fixed at the end part of the supporting plate (5) by the buckling structure (1), one sharp corner of the pressing structure (2) is clamped in the mounting groove (7).
2. Telescopic displacement limiting device according to claim 1, wherein the pressing structure (2) is formed by cutting a side wall of the fastening structure (1), one end of the pressing structure, which is close to the opening (3), is connected with the side wall of the fastening structure (1) as a whole, and one end of the pressing structure, which is far away from the opening (3), is bent towards the inside of the fastening structure (1).
3. A scale expansion cover, characterized in that the expansion displacement limiting device as claimed in claim 1 or 2 is arranged between the supporting plates inside.
4. A machine tool comprising the scale expansion cover of claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882166.3A CN110480411B (en) | 2019-09-18 | 2019-09-18 | Telescopic displacement limiting device, scale telescopic shield and machine tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910882166.3A CN110480411B (en) | 2019-09-18 | 2019-09-18 | Telescopic displacement limiting device, scale telescopic shield and machine tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110480411A CN110480411A (en) | 2019-11-22 |
| CN110480411B true CN110480411B (en) | 2024-03-29 |
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| CN201910882166.3A Active CN110480411B (en) | 2019-09-18 | 2019-09-18 | Telescopic displacement limiting device, scale telescopic shield and machine tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111266918A (en) * | 2020-03-31 | 2020-06-12 | 北京博鲁斯潘精密机床有限公司 | Retractable protection casing and have its lathe |
| CN111451369A (en) * | 2020-04-28 | 2020-07-28 | 滁州市永通交通设备有限公司 | Aluminum honeycomb drawing machine with high automation degree |
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