阅读说明：本技术 一种磨削抛光一体式机床 (Grinding and polishing integrated machine tool ) 是由 肖娟 于 2021-09-29 设计创作，主要内容包括：本发明属于机械加工技术领域,具体涉及一种磨削抛光一体式机床。该磨削抛光一体式机床包括工作台和安装在工作台顶部的机罩,所述工作台顶部设置有工件滑轨,所述工件滑轨上方设置有横轨,横轨底部设置有支撑架,横轨的滑块前侧安装有纵轨,纵轨的滑块前侧设置有基板,基板前侧分别安装有磨削组件和抛光组件,抛光组件的一侧设置有喷气枪；本发明通过液压气缸带动抛光轮上升较小的距离,即可进行抛光工序,并且两者距离近,只需使用一个喷气枪对加工过程中残留在工件顶部的金属屑进行清理,整个过程效率高,并且通过压合组件和清理组件的配合作用,可更快捷的对金属屑进行清理,防止金属屑反弹到工件底部,降低了清理难度。(The invention belongs to the technical field of machining, and particularly relates to a grinding and polishing integrated machine tool. The grinding and polishing integrated machine tool comprises a workbench and a machine cover arranged at the top of the workbench, wherein a workpiece slide rail is arranged at the top of the workbench, a transverse rail is arranged above the workpiece slide rail, a support frame is arranged at the bottom of the transverse rail, a longitudinal rail is arranged on the front side of a slide block of the transverse rail, a base plate is arranged on the front side of a slide block of the longitudinal rail, a grinding component and a polishing component are respectively arranged on the front side of the base plate, and an air gun is arranged on one side of the polishing component; according to the invention, the polishing wheel is driven by the hydraulic cylinder to rise for a small distance, so that the polishing process can be carried out, the distance between the polishing wheel and the hydraulic cylinder is short, only one air gun is needed to clean metal chips remained on the top of a workpiece in the machining process, the efficiency of the whole process is high, and the metal chips can be cleaned more quickly through the cooperation effect of the pressing component and the cleaning component, so that the metal chips are prevented from rebounding to the bottom of the workpiece, and the cleaning difficulty is reduced.)

1. The utility model provides a grinding polishing integral type lathe, includes workstation (1) and installs aircraft bonnet (2) at workstation (1) top, its characterized in that: the top of the workbench (1) is provided with a workpiece slide rail (3), a transverse rail (4) is arranged above the workpiece slide rail (3), the bottom of the transverse rail (4) is provided with a support frame (5), the front side of a slide block of the transverse rail (4) is provided with a longitudinal rail (6), the front side of the slide block of the longitudinal rail (6) is provided with a substrate (7), the front side of the substrate (7) is respectively provided with a grinding assembly (8) and a polishing assembly (9), and one side of the polishing assembly (9) is provided with an air gun (10); the grinding assembly (8) comprises a grinding motor (81), a grinding wheel (82) is installed at the output end of the grinding motor (81), a fixing plate (83) is installed at the top of the grinding motor (81), a trapezoidal block (84) is arranged at the top of the fixing plate (83), the width of the trapezoidal block (84) is increased from the bottom to the top, a hydraulic cylinder (85) is arranged at the top of the trapezoidal block (84), a top plate (86) is arranged at the top of the hydraulic cylinder (85), a positioning block (87) matched with the trapezoidal block (84) is sleeved on the outer side of the trapezoidal block (84), and the positioning block (87) and the top plate (86) are both fixedly connected to the front side of the base plate (7); the polishing assembly (9) comprises a polishing motor (91), and the polishing motor (91) is connected with the substrate (7) through a sleeving and connecting plate (92); the output end of the polishing motor (91) is provided with a polishing wheel (93), and the polishing wheel (93) is lower than the grinding wheel (82); the bottom of the sliding block of the longitudinal rail (6) is provided with a pressing component (11), and the top of the workbench (1) is provided with a cleaning component (12).

2. A grinding and polishing integrated machine tool according to claim 1, characterized in that: the pressing assembly (11) comprises a transverse plate (111), the top of the transverse plate (111) is connected with a sliding block of the longitudinal rail (6) through a compression spring (112), clamping blocks (113) are arranged at two ends of the transverse plate (111), the clamping blocks (113) are located in the side wall of the support frame (5), and the clamping blocks (113) are connected with the support frame (5) in a sliding mode in the vertical direction.

3. A grinding and polishing integrated machine tool according to claim 2, characterized in that: the cleaning assembly (12) comprises two arc plates (121), the two arc plates (121) are respectively positioned at two sides of the workpiece sliding rail (3), a vertical supporting rod (122) is arranged at the circle center of each arc plate (121), the supporting rod (122) is positioned under the transverse plate (111), a rotating ring (123) is sleeved at the outer side of the bottom of the supporting rod (122), the rotating ring (123) is connected with the supporting rod (122) through a torsion spring, a scraping plate (124) with the length being the same as the radius of the arc plate (121) is fixedly connected to the front side of the rotating ring (123), a groove (125) is arranged at the top of the rotating ring (123), the overlooking projection of the groove (125) is an 1/4 circular ring, a pushing inclined plane is formed on the side wall of the groove (125), the pushing inclined plane is obliquely arranged relative to the central axis of the supporting rod (122), a sleeve (126) is sleeved at the top of the supporting rod (122), and a return spring (127) is arranged at the top of the inner side of the sleeve (126), the bottom of the sleeve (126) is provided with a pressing rod (128), the lower end of the pressing rod (128) is aligned to the groove (125), and the pressing rod (128) is close to the workpiece sliding rail (3).

4. A grinding and polishing integrated machine tool according to claim 3, characterized in that: one side of the scraper (124) close to the workpiece slide rail (3) is provided with a plurality of baffle plates (13), the baffle plates (13) are uniformly distributed at intervals in the length direction of the scraper (124), and a collecting frame (14) is embedded in the surface of the workbench (1) at the bottom of the baffle plate (13).

5. A grinding and polishing integrated machine tool according to claim 4, characterized in that: the thickness of the scraper (124) is gradually reduced from the top to the bottom until the thickness is zero.

6. A grinding and polishing integrated machine tool according to claim 5, characterized in that: a positioning rod (15) is arranged at the bottom of the trapezoidal block (84), and the positioning rod (15) is inserted into the side wall of the positioning block (87); the fixed plate (83) is hinged with the hydraulic cylinder (85), and the width of the fixed plate (83) is smaller than that of the inner wall of the bottom end of the positioning block (87).

7. A grinding and polishing integrated machine tool according to claim 6, characterized in that: the baffle (13) is arranged in a hollow mode, and the height of the upper surface of the baffle (13) gradually increases towards the workpiece slide rail (3).

8. A grinding and polishing integrated machine tool according to claim 7, characterized in that: spacing groove (16) have been seted up at diaphragm (111) top, and pressure spring (112) bottom is provided with stopper (17), and stopper (17) are located inside spacing groove (16), and stopper (17) top and bottom all embed the ball.

Technical Field

The invention belongs to the technical field of machining, and particularly relates to a grinding and polishing integrated machine tool.

Background

In the field of modern machining, most parts with regular shapes are machined by numerical control machines, particularly shaft parts, the numerical control machines automatically machine the machined parts according to a machining program which is programmed in advance, a machining process route, process parameters, a movement track, a displacement, cutting parameters and auxiliary functions of the parts are compiled into a machining program list according to instruction codes and a program format specified by the numerical control machines, contents in the program list are recorded on a control medium and then are input into a numerical control device of the numerical control machines, and therefore the machine tool is instructed to machine the parts, and the numerical control machine tool machining method has the advantages of being high in machining efficiency and machining precision.

When grinding and polishing a workpiece, two sets of equipment are needed, the whole processing efficiency is low, when the two sets of equipment are integrated into one set of equipment for use, the distance between a grinding assembly and a polishing assembly is larger than the width of the workpiece, so that the other equipment cannot move downwards to cause influence when one equipment is used, in the processing process of the workpiece, generated scraps splash to cause the generation of metal scraps on the surface of a workbench in a larger range, if the isolation cover is adopted for isolation, the metal scraps blocked by the isolation cover can be strongly rebounded, and the metal scraps are difficult to clean when rebounded to the bottom of the workpiece.

Therefore, it is necessary to invent a grinding and polishing integrated machine to solve the above problems.

Disclosure of Invention

In view of the above problems, the present invention provides a grinding and polishing integrated machine tool to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a grinding and polishing integrated machine tool comprises a workbench and a machine cover arranged at the top of the workbench, wherein a workpiece slide rail is arranged at the top of the workbench, a transverse rail is arranged above the workpiece slide rail, a support frame is arranged at the bottom of the transverse rail, a longitudinal rail is arranged on the front side of a slide block of the transverse rail, a base plate is arranged on the front side of a slide block of the longitudinal rail, a grinding component and a polishing component are respectively arranged on the front side of the base plate, and an air gun is arranged on one side of the polishing component; the grinding assembly comprises a grinding motor, a grinding wheel is mounted at the output end of the grinding motor, a fixing plate is mounted at the top of the grinding motor, a trapezoidal block is arranged at the top of the fixing plate, the width of the trapezoidal block is increased from the bottom to the top, a hydraulic cylinder is arranged at the top of the trapezoidal block, a top plate is arranged at the top of the hydraulic cylinder, a positioning block matched with the trapezoidal block is sleeved on the outer side of the trapezoidal block, and the positioning block and the top plate are fixedly connected to the front side of the base plate; the polishing component comprises a polishing motor, and the polishing motor is connected with the substrate through a sleeving connection plate; the output end of the polishing motor is provided with a polishing wheel, and the polishing wheel is lower than the grinding wheel; the bottom of the sliding block of the longitudinal rail is provided with a pressing component, and the top of the workbench is provided with a cleaning component.

Preferably, the pressing component comprises a transverse plate, the top of the transverse plate is connected with a sliding block of the longitudinal rail through a compression spring, clamping blocks are arranged at two ends of the transverse plate, the clamping blocks are located in the side wall of the support frame, and the clamping blocks are in sliding connection with the support frame in the vertical direction.

Preferably, the clearance subassembly includes two circular arc boards, two circular arc boards are located work piece slide rail both sides respectively, and the centre of a circle department of circular arc board is provided with the bracing piece of erectting, the bracing piece is located under the horizontal plate, the rotating ring has been cup jointed in the bracing piece bottom outside, pass through torsional spring connection between rotating ring and the bracing piece, the same scraper blade of rotating ring front side fixedly connected with length and circular arc board radius, the rotating ring top is provided with the recess, the projection that the recess overlooked is 1/4 rings, and the lateral wall of recess is formed with the slope of pushing away, the slope of pushing away sets up for the axis slope of bracing piece, the sleeve pipe has been cup jointed at the bracing piece top, the inboard top of sleeve pipe is provided with return spring, the sleeve pipe bottom is provided with the depression bar, the recess is aimed at to the lower extreme of depression bar, and the depression bar is close to the work piece slide rail.

Preferably, one side of the scraper close to the workpiece slide rail is provided with a plurality of baffles which are uniformly distributed at intervals in the length direction of the scraper, and the surface of the workbench at the bottom of the baffles is embedded with a collecting frame.

Preferably, the thickness of the scraper blade is gradually reduced from the top to the bottom until the thickness is zero.

Preferably, the bottom of the trapezoid block is provided with a positioning rod, and the positioning rod is inserted into the side wall of the positioning block; the fixed plate is hinged with the hydraulic cylinder, and the width of the fixed plate is smaller than that of the inner wall of the bottom end of the positioning block.

Preferably, the baffle is arranged in a hollow mode, and the height of the upper surface of the baffle gradually increases towards the workpiece sliding rail.

Preferably, the diaphragm top has been seted up the spacing groove, and the pressure spring bottom is provided with the stopper, and the stopper is located the spacing inslot portion, and stopper top and bottom all imbed the ball.

The invention has the technical effects and advantages that:

1. the polishing wheel is driven by the hydraulic cylinder to rise for a small distance, so that a polishing procedure can be performed, the distance between the polishing wheel and the hydraulic cylinder is short, only one air gun is needed to clean metal chips remained on the top of a workpiece in the machining process, the efficiency of the whole process is high, and the metal chips can be cleaned more quickly through the cooperation of the pressing component and the cleaning component, so that the metal chips are prevented from rebounding to the bottom of the workpiece, and the cleaning difficulty is reduced;

2. according to the invention, the longitudinal rail drives the base plate to move downwards, the transverse plate is pressed downwards, the transverse plate enables the pressing rod at the bottom of the sleeve to enter the groove, the rotating ring drives the front end of the scraper to rotate and to be away from the workpiece slide rail, the torsional spring can drive the rotating ring to return to the original position when being restored, the scraper can stir metal scraps at the top of the workbench to the workpiece slide rail, after each workpiece is processed, the surface of the workbench can be automatically cleaned, and the cleaning difficulty can be obviously reduced;

3. according to the invention, through the arrangement of the baffle plates, when the metal chips move to the free end of the scraper, the baffle plates can block the metal chips, so that the metal chips are separated in the separation areas of two adjacent baffle plates, thus the height of metal chip aggregation is reduced, and the metal chips are prevented from crossing the baffle plates to cause incomplete cleaning;

4. the hydraulic cylinder drives the fixing plate to move upwards, the positioning rod is pulled out of the positioning block at the moment, the grinding motor can be stirred to be far away from the polishing motor, one positioning rod is taken at the side face of the positioning block, and therefore the polishing motor and the grinding motor can be adjusted to be large in distance, and the polishing motor and the grinding motor can meet the requirements in different occasions.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.

Fig. 1 is a schematic overall structure diagram of the grinding and polishing integrated machine tool of the invention.

FIG. 2 is a schematic diagram of one side of a cleaning assembly in the grinding and polishing integrated machine tool of the invention.

FIG. 3 is a top view of a table in the grinding and polishing all-in-one machine tool of the invention.

Fig. 4 is a front view of a grinding component in the grinding and polishing all-in-one machine tool of the invention.

FIG. 5 is a front view of a polishing assembly of the grinding and polishing integrated machine of the present invention.

FIG. 6 is a front sectional view of a locating block in the grinding and polishing integrated machine tool of the present invention.

FIG. 7 is a main sectional view of the cross plate and the supporting frame of the grinding and polishing integrated machine tool of the present invention.

In the figure: the polishing device comprises a workbench 1, a hood 2, a workpiece slide rail 3, a transverse rail 4, a support frame 5, a longitudinal rail 6, a base plate 7, a grinding assembly 8, a grinding motor 81, a grinding wheel 82, a fixing plate 83, a trapezoidal block 84, a hydraulic cylinder 85, a top plate 86, a positioning block 87, a polishing assembly 9, a polishing motor 91, a socket plate 92, a polishing wheel 93, an air gun 10, a pressing assembly 11, a transverse plate 111, a compression spring 112, a fixture block 113, a cleaning assembly 12, an arc plate 121, a support rod 122, a rotating ring 123, a scraping plate 124, a groove 125, a sleeve 126, a return spring 127, a pressing rod 128, a baffle plate 13, a collecting frame 14, a positioning rod 15, a limiting groove 16 and a limiting block 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative effort belong to the protection scope of the present invention;

in the description of the present invention, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, indicate orientations or positional relationships that are based on the orientations or positional relationships illustrated in fig. 1 for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Further, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

The invention provides a grinding and polishing integrated machine tool as shown in figures 1-7, which comprises a workbench 1 and a hood 2 arranged at the top of the workbench 1, wherein a workpiece slide rail 3 is arranged at the top of the workbench 1, a transverse rail 4 is arranged above the workpiece slide rail 3, a support frame 5 is arranged at the bottom of the transverse rail 4, a longitudinal rail 6 is arranged at the front side of a slide block of the transverse rail 4, a base plate 7 is arranged at the front side of a slide block of the longitudinal rail 6, a grinding assembly 8 and a polishing assembly 9 are respectively arranged at the front side of the base plate 7, and an air gun 10 is arranged at one side of the polishing assembly 9;

the grinding assembly 8 comprises a grinding motor 81, a grinding wheel 82 is mounted at the output end of the grinding motor 81, a fixing plate 83 is mounted at the top of the grinding motor 81, a trapezoidal block 84 is arranged at the top of the fixing plate 83, the width of the trapezoidal block 84 is increased from the bottom to the top, a hydraulic cylinder 85 is arranged at the top of the trapezoidal block 84, a top plate 86 is arranged at the top of the hydraulic cylinder 85, a positioning block 87 matched with the trapezoidal block 84 is sleeved on the outer side of the trapezoidal block 84, and the positioning block 87 and the top plate 86 are both fixedly connected to the front side of the base plate 7;

the polishing assembly 9 comprises a polishing motor 91, and the polishing motor 91 is connected with the substrate 7 through a sleeving connection plate 92; the output end of the polishing motor 91 is provided with a polishing wheel 93, and the polishing wheel 93 is lower than the grinding wheel 82; the bottom of the sliding block of the longitudinal rail 6 is provided with a pressing component 11, and the top of the workbench 1 is provided with a cleaning component 12.

When the polishing machine is used, a workpiece is arranged at the top of the workpiece slide rail 3 and fixed, the transverse rail 4 and the longitudinal rail 6 drive the grinding component 8 and the polishing component 9 to move in the X direction and the Z direction, the workpiece slide rail 3 drives the workpiece to move in the Y direction, so that the workpiece can be processed in all directions, in the processing process, the grinding motor 81 can drive the grinding wheel 82 to work to grind the workpiece, then the hydraulic cylinder 85 drives the grinding wheel 82 to ascend, so that the grinding wheel 82 is higher than the polishing wheel 93, then the polishing motor 91 is started, the polishing wheel 93 is driven by the polishing motor 91 to polish the workpiece, the polishing component 9 and the grinding component 8 are close to each other, the hydraulic cylinder 85 drives the polishing wheel 93 to ascend by a small distance, so that the polishing process can be performed, the distance between the two is close, only one air gun 10 is needed to clean metal chips remained at the top of the workpiece in the processing process, and the efficiency of the whole process is high, and through the cooperation of pressing components 11 and clearance subassembly 12, can clear up the metal fillings more swift, prevent that the metal fillings from rebounding to the work piece bottom, reduced the clearance degree of difficulty.

Referring to fig. 1-7 in the specification, the pressing assembly 11 includes a transverse plate 111, the top of the transverse plate 111 is connected to the slider of the longitudinal rail 6 through a pressing spring 112, two ends of the transverse plate 111 are respectively provided with a fixture block 113, the fixture block 113 is located in the side wall of the support frame 5, and the fixture block 113 is connected to the support frame 5 in a sliding manner in the vertical direction. The cleaning component 12 comprises two arc plates 121, the two arc plates 121 are respectively positioned at two sides of the workpiece slide rail 3, a vertical support rod 122 is arranged at the center of the circular arc plate 121, the support rod 122 is positioned under the transverse plate 111, a rotating ring 123 is sleeved at the outer side of the bottom of the support rod 122, the rotating ring 123 is connected with the support rod 122 through a torsion spring, a scraper 124 with the length same as the radius of the circular arc plate 121 is fixedly connected to the front side of the rotating ring 123, a groove 125 is arranged at the top of the rotating ring 123, the overlooking projection of the groove 125 is an 1/4 circular ring, and a pushing inclined plane is formed on the side wall of the groove 125, the pushing inclined plane is obliquely arranged relative to the central axis of the support rod 122, a sleeve 126 is sleeved at the top of the support rod 122, a return spring 127 is arranged at the top of the inner side of the sleeve 126, a pressing rod 128 is arranged at the bottom of the sleeve 126, the lower end of the pressing rod 128 is aligned to the groove 125, and the pressing rod 128 is close to the workpiece slide rail 3.

The cooperating process of the pressing component 11 and the cleaning component 12 is as follows: when the vertical rail 6 drives the base plate 7 to move downwards, the pressing spring 112 and the transverse plate 111 are driven to move downwards at the same time, finally the sleeve 126 can be pressed downwards through the transverse plate 111, the return spring 127 in the sleeve 126 is compressed, the pressing rod 128 at the bottom of the sleeve 126 can enter the groove 125, the overlooking projection of the groove 125 is an 1/4 circular ring, the side wall of the groove 125 is formed with a pushing inclined plane which is obliquely arranged relative to the central axis of the supporting rod 122, so that the lower end of the pressing rod 128 pushes against the inclined plane, the rotating ring 123 can be pressed and deflected, the front end of the scraping plate 124 rotates to be far away from the workpiece sliding rail 3, the torsion spring deforms, the scraping plate 124 is parallel to the workpiece sliding rail 3 to be vertical to the workpiece sliding rail 3, after the machining is finished, the torsion spring recovers to drive the rotating ring 123 to return to the original position, the scraping plate 124 can stir the metal scraps at the top of the workbench 1 to the workpiece sliding rail 3, and after each workpiece is machined, the surface of the workbench 1 can be automatically cleaned, and the cleaning difficulty can be obviously reduced.

For example, in order to prevent the lower end of the pressing rod 128 from easily separating from the pushing inclined surface, the groove 125 extends downward from the top of the rotating ring 123, and one side of the pushing inclined surface extends outward to form an increasing plate extending radially outward from the supporting rod 122. The surface of the lengthening plate is coplanar with the pushing inclined plane.

Referring to the attached fig. 3 of the specification, a plurality of baffles 13 are arranged on one side of the scraper 124 close to the workpiece slide rail 3, the plurality of baffles 13 are uniformly distributed at intervals in the length direction of the scraper 124, and a collection frame 14 is embedded in the surface of the workbench 1 at the bottom of the baffles 13.

When the metal fillings that produce after the single work piece processing are more, when stirring the metal fillings through scraper blade 124 this moment, the metal fillings can remove to scraper blade 124 tip department, the metal fillings gathering, when the height of the metal fillings of gathering is bigger than scraper blade 124, can cause the metal fillings to cross from scraper blade 124 top, cause the omission of clearance, and the setting of baffle 13, the metal fillings when removing to scraper blade 124 free end, baffle 13 can block the metal fillings, make the metal fillings separate in the interval region of two adjacent baffles 13, thereby reduce the height of metal fillings gathering, prevent that the metal fillings from crossing baffle 13, cause the clearance incomplete, last metal fillings all enter into in collecting frame 14, it can to take out the clearance with collecting frame 14.

Referring to the description of fig. 2, the thickness of the scraper 124 gradually decreases from the top to the bottom to zero. The amount of single push on the swarf is increased and the chance of swarf collecting past the flight 124 is reduced.

Referring to the specification and the attached fig. 6, a positioning rod 15 is arranged at the bottom of the trapezoidal block 84, and the positioning rod 15 is inserted into the side wall of the positioning block 87; the fixed plate 83 is hinged to the hydraulic cylinder 85, and the width of the fixed plate 83 is smaller than that of the inner wall of the bottom end of the positioning block 87.

After grinding motor 81 worked for a long time, accessible hydraulic cylinder 85 drove fixed plate 83 and shifts up, and locating lever 15 is pulled out from locating piece 87 this moment, can stir grinding motor 81 and keep away from polishing motor 91, and one of them locating lever 15 is taken in locating piece 87 side department to can adjust the grow with polishing motor 91 and grinding motor 81's interval, with the needs of adaptation different occasions.

Referring to the attached fig. 2 in the specification, the baffle 13 is hollow, and the height of the upper surface of the baffle 13 gradually increases towards the workpiece slide rail 3.

Baffle 13 cavity sets up, can reduce the whole weight of baffle 13, improves the speed when scraper blade 124 returns to the height of baffle 13 upper surface gradually to work piece slide rail 3 department grow, can make baffle 13 upper surface be an inclined plane, and the piece can not remain on baffle 13 upper surface.

Referring to the attached drawing 7 of the specification, a limiting groove 16 is formed in the top of the transverse plate 111, a limiting block 17 is arranged at the bottom end of the compression spring 112, the limiting block 17 is located inside the limiting groove 16, and balls are embedded into the top and the bottom of the limiting block 17.

When the transverse rail 4 moves horizontally, the pressing spring 112 can be driven by the substrate 7, the pressing spring 112 drives the limiting block 17 to move in the limiting groove 16, the pressing spring 112 is prevented from bending, and meanwhile, the friction force of the limiting block 17 in the limiting groove 16 can be reduced by the balls.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.