Scraper mechanism

Abstract

The embodiment of the utility model discloses a scraper mechanism which comprises a base, a supporting assembly, a leveling assembly and a scraper piece. The supporting assembly is mounted at the top of the base, and the leveling assembly comprises a driving part, a ball screw, a mounting seat and a deep groove ball bearing; the ball screw is installed on the supporting assembly, the ball screw is perpendicular to the base, and the installation base is installed on the ball screw; the driving piece is connected with the ball screw in a matched mode and drives the ball screw to drive the installation base to move in the axial direction of the ball screw. An inner ring of the deep groove ball bearing is fixedly connected with the installation base, and an outer ring of the deep groove ball bearing is connected with the scraper piece. According to the scraper mechanism provided by the invention, the driving part drives the ball screw to drive the mounting seat to press up and down on the ball screw, so that the deep groove ball bearing with the inner ring fixedly connected with the mounting seat is pressed down, and when the deep groove ball bearing is stressed, the scraper part fixed with the outer ring is driven to rotate and automatically twist to a surface perpendicular to the pressing direction, namely a surface horizontal to the base; and therefore, the levelness is consistent with that of the base vertical to the ball screw.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of PCBA manufacturing, especially relates to a scraper mechanism. BACKGROUND

[0002] Before the PCBA is pasted, the steel net is used to implant the soldering tin point on the PCB (printed circuit board) with the soldering tin paste, and then the scraper is used to scrape the area with the implanted soldering tin paste to clean the excess soldering tin paste. Since the scraper in the scraper assembly is manually installed on the scraper seat, the scraper assembly is prone to positional deviation during installation. When the scraper removes the soldering tin paste, the levelness of the scraper and the steel net in the area with the implanted soldering tin paste on the PCB surface is inconsistent, the scraper cleans the soldering tin paste on the PCB surface unevenly, which leads to that the PCB surface has insufficient or even no soldering tin paste in the local area during the next pasting process of the pasting machine, so that the PCB and the welded electronic components are not effectively connected due to insufficient soldering tin paste, which leads to product defects. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. To this end, the utility model provides a scraper mechanism to solve the problem that the levelness of the scraper in the scraper assembly after installation and the steel net in the area with the implanted soldering tin paste on the PCB surface is inconsistent, which leads to uneven cleaning of the soldering tin paste on the PCB surface and product defects.

[0004] Specifically, the utility model provides a scraper mechanism, which comprises a base, a supporting assembly, a leveling assembly and a scraper piece.

[0005] The supporting assembly is installed on the top of the base, and the leveling assembly comprises a driving piece, a ball screw, a mounting seat and a deep groove ball bearing.

[0006] The ball screw is installed on the supporting assembly, the ball screw is perpendicular to the base, and the mounting seat is installed on the ball screw; the driving piece is connected with the ball screw, and the driving piece drives the ball screw to move the mounting seat in the axial direction of the ball screw.

[0007] The inner ring of the deep groove ball bearing is fixedly connected with the mounting seat, and the outer ring of the deep groove ball bearing is connected with the scraper piece.

[0008] The scraper mechanism provided in the application drives the ball screw by the driving piece to drive the mounting seat to press up and down on the ball screw, so that the deep groove ball bearing fixedly connected with the mounting seat is pressed down, and when the deep groove ball bearing is stressed, the scraper piece fixedly connected with the outer ring is automatically twisted to the surface perpendicular to the pressing direction, that is, the surface horizontal to the base, so that the levelness of the base perpendicular to the ball screw is consistent.

[0009] In one embodiment of the above-described doctor blade mechanism, the inner ring of the deep groove ball bearing is connected to the mounting base through a connecting rod;

[0010] One end of the connecting rod is fixed to the mounting base, and the other end is inserted into the inner ring of the deep groove ball bearing and fixedly connected to the inner ring of the deep groove ball bearing;

[0011] The connecting rod is parallel to the base.

[0012] The inner ring of the deep groove ball bearing is connected and fixed to the mounting base through the connecting rod parallel to the base, facilitating connection and installation, and the deep groove ball bearing is stable in force in the direction perpendicular to the base.

[0013] In one embodiment of the above-described doctor blade mechanism, the support assembly includes a support base and a pair of support rods;

[0014] The support rods are vertically installed on the base, and the two ends of the support base are fixedly connected to the pair of support rods, respectively;

[0015] A screw rod support is embedded on the support base, a ball screw is fitted in the screw rod support, a driving member is fitted to the end of the ball screw, and the driving member is located on the side of the support base away from the base.

[0016] The ball screw is fixed by the support base, and the support base is supported and fixed by the support rods perpendicular to the base, which is simple and stable in structure and facilitates assembly.

[0017] Further, a linear bearing is sleeved on each support rod, and the two ends of the mounting base are connected to the linear bearings on the pair of support rods.

[0018] The linear bearings are sleeved on the support rods, and the two ends of the mounting base are connected to the linear bearings, which slide up and down on the support rods when the mounting base is lifted, can provide support to the ends of the mounting base while assisting in lifting the mounting base, and improve the stability of the mounting base during lifting.

[0019] Further, the support assembly further includes a limiting member, one limiting member is connected to each end of the support rod connected to the base, and the limiting member cooperates with the support rod to form a stepped surface on the outer circumferential surface of the support rod;

[0020] The stepped surface is configured to abut against the end surface of the linear bearing when the linear bearing descends with the mounting base, so as to limit the sliding distance of the linear bearing on the support rod.

[0021] By providing the limiting member at the bottom of the support rod, i.e., the end of the support rod connected to the base, the limiting member forms a stepped surface abutting against the linear bearing, which can limit the descending stroke of the linear bearing, and limit the descending stroke of the mounting base connected to the linear bearing, avoiding that the position of the doctor blade connected to the mounting base through the deep groove ball bearing is too low, resulting in excessive pressure between the doctor blade and the printed steel mesh and damaging the doctor blade.

[0022] In one embodiment of the above-described doctor blade mechanism, the doctor blade mechanism further comprises a connecting guide assembly, the connecting guide assembly comprising a connecting seat and a guide bearing;

[0023] The connecting seat is fixed on the outer ring of the deep groove ball bearing, the guide bearing comprises a bearing seat and a bearing, the bearing seat is embedded in the connecting seat, and the first end of the bearing passes through the bearing seat, and the second end of the bearing is connected with the doctor blade piece.

[0024] The guide bearing is connected between the doctor blade piece and the mounting seat, one end of the bearing in the guide bearing is connected with the doctor blade piece, and the other end moves in the mounting seat, so that the doctor blade piece can be assisted in guiding when the doctor blade piece is twisted with the deep groove ball bearing, and the doctor blade piece is prevented from being twisted too much to cause too long leveling time.

[0025] Further, the guide bearings are arranged in pairs and vertically, and the guide bearings are symmetrically arranged with the center of the doctor blade piece as the center.

[0026] The guide bearings are symmetrically arranged with the center axis of the doctor blade piece in the vertical direction as the center, and the guiding effect is better.

[0027] Further, the doctor blade mechanism further comprises a connecting block;

[0028] The outer ring of the deep groove ball bearing is fixedly embedded in the connecting seat;

[0029] The second end of the guide bearing is fixedly connected with the connecting block, and the doctor blade piece is detachably mounted on the connecting block.

[0030] The outer ring of the deep groove ball bearing is fixedly embedded in the connecting seat, which facilitates the connection of the outer ring of the deep groove ball bearing with other components, and can protect the deep groove ball bearing from external interference, and the doctor blade piece is detachably connected with the connecting block, which facilitates replacement.

[0031] Further, the doctor blade mechanism further comprises a pressure detector, the pressure detector is fixed on the mounting seat, and the detection end of the pressure detector is arranged towards the connecting block and the end face of the detection end abuts against the connecting block.

[0032] The pressure detector is fixed on the mounting seat, and the detection end of the pressure detector abuts against the connecting block, so that the pressure applied by the ball screw to the connecting block through the mounting seat can be detected, and the height of the mounting seat can be adjusted to an appropriate range.

[0033] In one embodiment of the above-described doctor blade mechanism, the doctor blade mechanism further comprises a light source mounted on the top of the base;

[0034] The light emitted by the light source is parallel to the base, and the height of the light emitted by the light source is consistent with the target height of the doctor blade piece.

[0035] The light emitted by the light source in the checking assembly is parallel to the base and the height of the emitted light is consistent with the target height of the scraper, if the emitted light can pass through the scraper, the height and levelness of the scraper are not up to standard, and the height and levelness of the scraper can be quickly and intuitively checked.

[0036] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description or can be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0037] The disclosure will be more readily understood by reference to the following description taken in conjunction with the accompanying drawings, in which like reference numerals refer to like elements throughout. It will be readily understood that the drawings are for purposes of the present description only, and are not intended to limit the scope of the present application. Furthermore, like reference numerals designate like elements in the various drawings.

[0038] Figure 1 is a perspective view of the scraper mechanism provided by an embodiment of the present application;

[0039] Figure 2 is a front view of the scraper mechanism provided by an embodiment of the present application;

[0040] Figure 3 is Figure 2 is a sectional view taken along line E-E in FIG.

[0041] Figure 4 is a structural schematic view of the ball screw in the scraper mechanism provided by an embodiment of the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS

[0043] 1, base; 2, support assembly; 21, support seat; 22, support rod; 23, limiting piece; 3, leveling assembly; 31, driving piece; 32, ball screw; 321, screw rod; 322, nut; 323, steel ball; 324, semicircular spiral groove; 33, mounting seat; 34, deep groove ball bearing; 4, scraper; 5, connecting rod; 6, screw rod support; 7, linear bearing; 8, connecting guide assembly; 81, connecting seat; 82, guide bearing; 821, bearing seat; 822, bearing; 9, connecting block; 10, pressure detector; 11, light source. DETAILED DESCRIPTION

[0044] Some embodiments of the present application will now be described with reference to the drawings. It will be readily understood by those skilled in the art that these embodiments are merely intended to explain the technical principles of the present application, and are not intended to limit the scope of protection of the present application.

[0045] As described in the background, before the patching process of the PCBA, the steel mesh is used to uniformly implant the solder paste on the soldering points on the PCB, and then the scraper is used to clean the excess solder paste on the steel mesh. Since the scraper in the scraper assembly is manually installed, it is easy to cause position deviation, resulting in inconsistent level of the scraper and the steel mesh on the PCB surface, and the cleaning of the solder paste by the scraper is uneven, thereby causing insufficient solder paste between the PCB and the soldered electronic components during subsequent patching, resulting in product defects.

[0046] PCB is a printed circuit board, which is an abbreviation of Printed Circuit Board.

[0047] PCBA is an abbreviation of Printed Circuit Board+Assembly, which refers to the entire process of the PCB empty board after SMT and DIP plug-in.

[0048] SMT is a surface mounting technology, which is an abbreviation of Surface Mounted Technology. Some small electronic components are mounted on the PCB by using a mounting machine.

[0049] DIP is a "plug-in", which refers to inserting parts on the PCB.

[0050] To solve the above problems, the application creatively proposes a scraper mechanism, which uses a ball screw perpendicular to the base to apply force through a mounting seat, drives a deep groove ball bearing fixed with the mounting seat to press down vertically to the base, and makes the scraper fixed on the outer ring of the deep groove ball bearing automatically twist to the horizontal surface of the base, so that it has the same level as the base. When the base is installed on the table surface of the silk screen equipment, the level of the scraper is consistent with the level of the steel mesh on the PCB on the table surface of the silk screen equipment.

[0051] The application will be specifically described through specific embodiments.

[0052] Specifically, referring to Figures 1 to 3 The application provides a scraper mechanism, which includes a base 1, a support assembly 2, a leveling assembly 3 and a scraper 4. The base 1 is used to be installed on the table surface of the silk screen equipment for placing the PCB, and the bottom surface of the base 1 is attached to the table surface of the silk screen equipment.

[0053] The support assembly 2 is installed on the top of the base 1, and the leveling assembly 3 includes a driving part 31, a ball screw 32, a mounting seat 33 and a deep groove ball bearing 34.

[0054] The ball screw 32 is installed on the support assembly 2, and the ball screw 32 is perpendicular to the base 1. The mounting seat 33 is installed on the ball screw 32. The driving member 31 is connected with the ball screw 32, and drives the ball screw 32 to drive the mounting seat 33 to move in the axial direction of the ball screw 32. The inner ring of the deep groove ball bearing 34 is fixedly connected with the mounting seat 33, and the outer ring of the deep groove ball bearing 34 is connected with the scraper member 4.

[0055] The ball screw 32 is a transmission element for converting rotary motion into linear motion. As shown in FIG. 1, the ball screw 32 is composed of at least a screw rod 321, a nut 322, a steel ball 323, a pre-pressing piece, a reverser and a dustproof device. Figure 4 The screw rod 321 is provided with a semicircular spiral groove 324, and the steel ball 323 rolls in the semicircular spiral groove 324. The nut 322 is used to fix the load to be moved. In the present application, the nut 322 is fixedly connected with the load mounting seat 33. The fixed connection between the nut 322 and the mounting seat 33 can be that an opening matching the outer circumferential surface of the nut 322 is formed on the mounting seat 33, the nut 322 is embedded in the opening, and the mounting seat 33 and the nut 322 are fixedly connected in an interference fit, or the fixed connection is achieved by connecting members such as screws. Of course, part of the outer circumferential surface or the end surface of the nut 322 can be connected and fixed with the mounting seat 33 by connecting members such as screws. The present application does not make specific limitations in this regard. The nut 322 is internally provided with a semicircular spiral groove 324 similar to the screw rod 321. The steel ball 323, as a part of the bearing body, directly bears the load, and at the same time, as an intermediate transmission element, transmits the motion in a rolling manner. After the screw rod 321 and the nut 322 are assembled, the semicircular spiral grooves 324 on the screw rod 321 and the nut 322 cooperate to form a spiral raceway with a circular cross section. When the screw rod 321 is driven by the driving member 31 connected therewith, the steel ball 323 rolls forward in the spiral raceway, driving the nut 322 to move linearly on the screw rod 321 according to the corresponding pitch of the rotation angle of the screw rod 321. The mounting seat 33 connected with the nut 322 moves linearly according to the corresponding pitch to realize lifting.

[0056] The driving member 31 can be a rotary air cylinder, a rotary motor or any other structure or device capable of driving the screw rod 321 in the ball screw 32 to rotate. Exemplarily, the driving member 31 is a rotary handle. The driving member 31 applies torque to the ball screw 32, and the ball screw 32 converts the torque into axial repeated force, converts the rotary motion into linear motion, and thus drives the mounting seat 33 to move linearly in the axial direction. The deep groove ball bearing 34 can bear radial and axial forces at the same time. In the radial direction, the deep groove ball bearing 34 can bear the pressure applied by the ball screw 32 through the mounting seat 33, and the tensile force applied by the gravity of the scraper member.

[0057] Preferably, the deep groove ball bearing 34 is a double-row deep groove ball bearing, which has higher precision and longer service life.

[0058] The scraper mechanism provided by the application, the driving member 31 drives the ball screw 32 to drive the mounting seat 33 to move up and down on the ball screw 32, so as to press down the deep groove ball bearing 34 fixedly connected with the mounting seat 33, and when the deep groove ball bearing 34 is stressed, the scraper member 4 fixed with the outer ring is rotated and automatically twisted to a surface perpendicular to the pressing direction of the scraping surface of the scraper member 4, that is, a surface horizontal to the base 1, so that the base 1 perpendicular to the ball screw 32 has the same levelness.

[0059] The scraper member 4 can be directly bonded or riveted with the outer ring of the deep groove ball bearing 34 or connected with the outer ring through the opening matched with the outer ring, can be indirectly connected with the outer ring of the deep groove ball bearing 34 through connecting blocks, connecting rods and the like and riveting members such as screws, and can be indirectly connected with the outer ring of the deep groove ball bearing 34 through guiding members such as guide bearings and guide rails. Figure 3 As shown in FIG. 1, the inner ring of the deep groove ball bearing 34 is connected with the mounting seat 33 through the connecting rod 5, one end of the connecting rod 5 is fixed on the mounting seat 33, the other end is inserted into the inner ring of the deep groove ball bearing 34 and fixedly connected with the inner ring of the deep groove ball bearing 34, and the connecting rod 5 is parallel to the base 1.

[0060] The inner ring of the deep groove ball bearing 34 is connected and fixed with the mounting seat 33 through the connecting rod 5 parallel to the base 1, which is convenient for connection and installation, and the deep groove ball bearing 34 is stable in stress in the direction perpendicular to the base 1.

[0061] The connecting rod 5 can be fixed with the mounting seat 33 by being inserted into the side surface of the mounting seat 33 or by being fixed with the mounting seat 33 through connecting parts such as screws or rivets, which is not limited in the application.

[0062] In some embodiments, the support assembly 2 comprises a support seat 21 and a pair of support rods 22, the support rods 22 are vertically installed on the base 1, and the support seat 21 is fixedly connected with the pair of support rods 22 at both ends.

[0063] The support seat 21 is embedded with a screw rod support 6, the ball screw 32 is fitted in the screw rod support 6, the driving member 31 is fitted with the end of the ball screw 32, and the driving member 31 is located on the side of the support seat 21 away from the base 1.

[0064] The ball screw 32 is fixed through the support seat 21, the support seat 21 is fixed by the support rods 22 perpendicular to the base 1, the structure is simple and stable, and the assembly is convenient. The support seat 21 can be inclined relative to the base 1 or can be horizontally arranged relative to the base 1. Preferably, the support seat 21 is horizontally arranged relative to the base 1, that is, the support seat 21 is perpendicular to the support rods 22, and the structure is more stable and beautiful.

[0065] Further, a linear bearing 7 is sleeved on each support rod 22, and the two ends of the mounting seat 33 are connected with the linear bearings 7 on the pair of support rods 22.

[0066] The linear bearing 7 is sleeved on the support rod 22, and the two ends of the mounting seat 33 are connected with the linear bearings 7, so that the linear bearing 7 slides up and down on the support rod 22 when the mounting seat 33 is lifted, which can provide support for the end of the mounting seat 33 while assisting in lifting the mounting seat 33, thereby improving the stability of the mounting seat 33 during lifting.

[0067] Further, the support assembly 2 further comprises a limiting piece 23, one limiting piece 23 is connected to the end of each support rod 22 connected with the base 1, and the limiting piece 23 forms a stepped surface on the outer circumferential surface of the support rod 22 in cooperation with the support rod 22; the limiting piece 23 can be a limiting ring with a certain thickness in the radial direction sleeved on the support rod 22, or a limiting block connected with the outer circumferential surface of the support rod 22, or any other component capable of forming a raised stepped surface on the outer circumferential surface of the support rod 22, and the present application does not make specific limitations in this regard.

[0068] The stepped surface is configured to abut against the end surface of the linear bearing 7 when the linear bearing 7 descends with the mounting seat 33, so as to limit the sliding distance of the linear bearing 7 on the support rod 22.

[0069] By arranging the limiting piece 23 at the bottom of the support rod 22, i.e., the end of the support rod 22 connected with the base 1, the limiting piece 23 forms a stepped surface abutting against the linear bearing 7 in cooperation with the support rod 22, which can limit the descending stroke of the linear bearing 7, thereby limiting the descending stroke of the mounting seat 33 connected with the linear bearing 7, avoiding that the position of the doctor blade 4 connected with the mounting seat 33 through the deep groove ball bearing 34 is too low, which causes excessive pressure between the doctor blade 4 and the squeegeed steel mesh and damages the doctor blade 4.

[0070] In some embodiments, the doctor blade mechanism further comprises a connecting guide assembly 8, and the connecting guide assembly 8 comprises a connecting seat 81 and a guide bearing 82; the connecting seat 81 is fixed to the outer ring of the deep groove ball bearing 34, as shown in Figure 2 The guide bearing 82 comprises a bearing seat 821 and a bearing 822, the bearing seat 821 is embedded in the connecting seat 81, the first end of the bearing 822 is movably arranged in the bearing seat 821, and the second end of the bearing 822 is connected with the doctor blade 4.

[0071] The scraper 4 is connected with the outer ring of the deep groove ball bearing 34 through the guide assembly 8. Specifically, the connecting seat 81 in the guide assembly 8 is sleeved and fixed on the outer ring of the deep groove ball bearing 34, and the scraper 4 is connected with the connecting seat 81 through the guide bearing 82. One end of the bearing 822 in the guide bearing 82 is connected with the scraper 4, and the other end is movably arranged in the connecting seat 81. When the deep groove ball bearing 34 is twisted, the connecting seat 81 sleeved and fixed on the outer ring of the deep groove ball bearing 34 is twisted with the deep groove ball bearing 34, and the guide bearing 82 arranged in the connecting seat 81 is twisted, so that the scraper 4 connected with the guide bearing 82 is twisted. The guide bearing 82 can assist in guiding when the scraper 4 is twisted with the deep groove ball bearing 34, so as to avoid that the twisting amplitude of the scraper 4 is too large and the leveling time is too long.

[0072] Further, the guide bearings 82 are arranged in pairs and vertically, and are symmetrically arranged with the scraper 4 as the center.

[0073] The guide bearings 82 are symmetrically arranged with the center axis of the scraper 4 in the vertical direction as the center, and the guiding effect is better.

[0074] Further, the scraper mechanism further comprises a connecting block 9; the outer ring of the deep groove ball bearing 34 is fixedly embedded in the connecting seat 81; the second end of the guide bearing 82 is fixedly connected with the connecting block 9, and the scraper 4 is detachably mounted on the connecting block 9.

[0075] The outer ring of the deep groove ball bearing 34 is fixedly embedded in the connecting seat 81, which facilitates the connection of the outer ring of the deep groove ball bearing 34 with other components, and can protect the deep groove ball bearing 34 from interference of foreign matters. The scraper 4 is detachably connected with the connecting block 9, which facilitates the disassembly and replacement of the scraper 4 of different sizes. Preferably, the outer ring of the deep groove ball bearing 34 is fixedly embedded in the center point of the connecting seat 81, and the structure on the connecting seat 81 is symmetrical and uniformly stressed.

[0076] The connecting mode of the scraper 4 and the connecting block 9 can be clamping through the bayonet and the clamping block, or connecting through the screw hole and the screw, or any other connecting mode that can fix the scraper 4 on the connecting block 9 and can be disassembled and reassembled. The application does not make specific limitation hereon.

[0077] The scraper mechanism provided by one embodiment of the application, the rotating handle applies torque to the screw rod 321 in the ball screw 32, so that the nut 322 converts the lead corresponding to the angle of rotation of the screw rod 321 into linear motion, the mounting seat 33 connected with the nut 322 moves downward along the screw rod 321, the deep groove ball bearing 34 fixedly connected with the mounting seat 33 through the connecting rod 5 moves downward with the mounting seat 33, and drives the connecting seat 81 fixedly connected with the outer ring of the deep groove ball bearing 34 to be pressed downward, thereby driving the scraper 4 connected with the connecting seat 81 through the guide bearing 82 to move downward. In the process of moving downward under the force of the deep groove ball bearing 34, the deep groove ball bearing 34 can bear axial load in addition to bearing radial load, and can automatically twist to the plane perpendicular to the downward pressure when being pressed, because the downward pressure of the deep groove ball bearing 34 is initially applied by the nut 322 moving downward along the screw rod 321, so the direction of the downward pressure is the same as the direction of the screw rod 321, and the ball screw 32 is perpendicular to the base 1, that is, the screw rod 321 is perpendicular to the base 1, so the deep groove ball bearing 34 can twist to the plane parallel to the base 1 after being subjected to the downward pressure, thereby driving the scraper 4 connected with the deep groove ball bearing 34 through the guide bearing 82 and the connecting seat 81 to twist to the plane parallel to the base 1, and leveling the scraper 4 is realized.

[0078] Further, the scraper mechanism further comprises a pressure detector 10, the pressure detector 10 is fixed on the mounting seat 33, and the detection end of the pressure detector 10 is arranged towards the connecting block 9 and the end face of the detection end abuts against the connecting block 9.

[0079] When the nut 322 in the ball screw 32 moves downward, the mounting seat 33 fixedly connected with the nut 322 moves downward, and the deep groove ball bearing 34 fixedly connected with the mounting seat 33 is pressed downward, so that the connecting seat 81 fixedly connected with the outer ring of the deep groove ball bearing 34 moves downward and exerts pressure on the connecting block 9. The main body part of the pressure detector 10 is fixed on the mounting seat 33, and the detection end of the pressure detector 10 abuts against the connecting block 9. When the mounting seat 33 is pressed downward, the main body of the pressure detector 10 moves downward with the mounting seat 33. When the mounting seat 33 continues to be pressed downward after the scraper 4 abuts against the base 1 after the scraper 4 moves downward with the mounting seat 33, the end of the scraper 4 subjected to uneven force is pressed upward by the base 1, the guide bearing 82 connected with the end of the scraper 4 subjected to uneven force is lifted upward, and the scraper 4 is moved to be horizontal. In the process that the connecting block 9 fixedly connected with the scraper 4 is pressed upward by the base 1, the detection end abutting against the connecting block 9 is extruded by the reduced distance between the mounting seat 33 and the connecting block 9, so that the force exerted on the scraper 4 by the base 1 can be detected. Since the forces are mutual, the pressure of the scraper 4 and the connecting block 9 on the base 1 is equal to the force exerted on the scraper 4 by the base 1, that is, the pressure detector 10 can detect the pressure of the scraper 4 and the connecting block 9 on the base 1. Preferably, the end face of the detection end of the pressure detector 10 abuts against the center point of the face of the connecting block 9 facing the pressure detector 10, so that the detection of the force of the connecting block 9 and the scraper 4 is more accurate.

[0080] In some embodiments, the scraper mechanism further comprises a light source 11 mounted on the top of the base 1.

[0081] The light emitted by the light source 11 is parallel to the base 1, and the height of the light emitted by the light source 11 is consistent with the target height of the scraper 4.

[0082] The light emitted by the light source 11 in the verification assembly is parallel to the base 1, and the height of the light emitted by the light source 11 is consistent with the target height of the scraper 4. If the light can pass through the scraper 4, the height and levelness of the scraper 4 do not meet the standards, and the height and levelness of the scraper 4 can be quickly and intuitively verified.

[0083] The light source 11 can be located on any side of the scraper 4, as long as the light emitted by the light source 11 is not parallel to the long axis direction of the scraper 4.

[0084] The scraper member 4 comprises a scraper seat and a scraper, the scraper seat is detachably connected with the connecting block 9, and the scraper is installed on the scraper seat, so that the connection and installation are facilitated. The light height of the light source 11 is consistent with the target height of the scraper, when the levelness and height of the scraper meet the requirements, the light of the light source 11 is completely blocked by the scraper when the scraper is viewed from the side far away from the light source 11, and when the levelness or height of the scraper does not meet the requirements, the light of the light source 11 can be seen when the scraper is viewed from the side far away from the light source 11.

[0085] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0086] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0087] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A doctor mechanism characterized by, The utility model relates to a scraping mechanism, including: Base, support component, leveler and scraper piece; The support component is installed on the top of the base, and the leveler includes a driving piece, a ball screw, a mounting seat and a deep groove ball bearing; The ball screw is installed on the support component, and the ball screw is perpendicular to the base, and the mounting seat is installed on the ball screw; the driving piece is connected with the ball screw, and the driving piece drives the ball screw to move the mounting seat in the axial direction of the ball screw; The inner ring of the deep groove ball bearing is fixedly connected with the mounting seat, and the outer ring of the deep groove ball bearing is connected with the scraper piece.

2. The doctor mechanism of claim 1, wherein, The inner ring of the deep groove ball bearing is connected with the mounting seat through a connecting rod; One end of the connecting rod is fixed on the mounting seat, and the other end is arranged in the inner ring of the deep groove ball bearing and fixedly connected with the inner ring of the deep groove ball bearing; The connecting rod is parallel to the base.

3. The doctor mechanism of claim 1, wherein, The support component includes a support seat and a pair of support rods; The support rods are vertically installed on the base, and the two ends of the support seat are fixedly connected with the pair of support rods respectively; A screw rod support is embedded on the support seat, a ball screw is connected in the screw rod support, the driving piece is connected with the end of the ball screw, and the driving piece is located on the side of the support seat away from the base.

4. The doctor mechanism of claim 3, wherein, A linear bearing is sleeved on each support rod, and the two ends of the mounting seat are connected with the linear bearings on the pair of support rods.

5. The doctor mechanism of claim 4, wherein, The support component further includes a limiting piece, one limiting piece is connected to the end of each support rod connected with the base, and the limiting piece cooperates with the support rod on the outer circumferential surface of the support rod to form a stepped surface; The stepped surface is configured to abut against the end surface of the linear bearing when the linear bearing descends with the mounting seat, so as to limit the sliding distance of the linear bearing on the support rod.

6. The doctor mechanism of claim 1, wherein, The scraper mechanism further includes a connecting guide assembly, and the connecting guide assembly includes a connecting seat and a guide bearing; The connecting seat is fixed on the outer ring of the deep groove ball bearing, the guide bearing includes a bearing seat and a bearing, the bearing seat is embedded on the connecting seat, the first end of the bearing is arranged in the bearing seat, and the second end of the bearing is connected with the scraper piece.

7. The doctor mechanism of claim 6, wherein, The guide bearings are arranged in pairs and vertically, and the guide bearings are symmetrically arranged with the scraper piece as the center.

8. The doctor mechanism of claim 6, wherein, The scraper mechanism further includes a connecting block; The second end of the guide bearing is fixedly connected with the connecting block, and the scraper piece is detachably installed on the connecting block.

9. The doctor mechanism of claim 8, wherein, The scraper mechanism further includes a pressure detector, the pressure detector is fixed on the mounting seat, the detection end of the pressure detector is arranged towards the connecting block, and the end surface of the detection end of the pressure detector abuts against the connecting block.

10. The doctor mechanism of claim 1, wherein, The scraper mechanism further includes a light source installed on the top of the base; The light emitted by the light source is parallel to the base, and the height of the light emitted by the light source is consistent with the target height of the scraper piece.

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