CN111198146A

CN111198146A - RCA paper tape rubbing machine

Info

Publication number: CN111198146A
Application number: CN202010182454.0A
Authority: CN
Inventors: 方腾飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-16
Filing date: 2020-03-16
Publication date: 2020-05-26
Anticipated expiration: 2040-03-16
Also published as: CN111198146B; CN112362451A

Abstract

The invention discloses an RCA paper tape rubbing machine, which comprises a machine base, a paper placing mechanism, an object placing table, a conveying mechanism, a weight regulator, a counter and a paper collecting mechanism, wherein the paper placing mechanism is arranged on the machine base; the weight adjuster comprises a cross rod, a sliding block capable of moving along the length direction of the cross rod, a push rod fixedly connected with the sliding block and a locking mechanism for fixing the position of the sliding block; the sliding block cover is located outside the horizontal pole, be equipped with a plurality of weight recesses on this sliding block. According to the invention, the weight adjuster is arranged to enlarge the load adjusting range, so that more accurate load is set according to the specific hardness of the hardware to be measured, and the accuracy of the measuring result is improved.

Description

RCA paper tape rubbing machine

Technical Field

The invention belongs to the technical field of test equipment, and particularly relates to an RCA paper tape rubbing machine.

Background

The RCA paper tape abrasion resistance tester is suitable for testing the abrasion resistance of plastic surface coating layers, and is mainly used for products such as mobile phone key printing, mobile phone shells, MP3, CD players, portable computers, PDAs, electric appliance shells and the like. Because the coating layers of different pieces to be tested have different soft and hard textures, the load of the pieces to be tested needs to be adjusted in size during a wear resistance test so as to meet the friction requirements of different pieces to be tested.

When a conventional RCA paper tape abrasion tester carries out load test, the coating layers of a piece to be tested are roughly classified, the texture is classified into three categories of hard, general and soft, if the texture is general, a weight of 55g is hung at a lever on the left side of a swing arm, if the texture is soft, a weight of 175g is hung, and if the texture is hard, the weight is not hung. The classification mode is very rough, and more accurate load cannot be set according to the specific hardness degree of the hardware to be measured, so that the accuracy of the measurement result is not high.

Disclosure of Invention

The invention provides an RCA paper tape rubbing machine which can increase the load adjusting range in order to overcome the defects of the prior art.

In order to achieve the purpose, the invention adopts the following technical scheme: an RCA paper tape friction machine comprises a base, a paper placing mechanism arranged at one end of the base, an object placing table, a conveying mechanism, a weight adjuster, a counter and a paper collecting mechanism arranged at the other end of the base, wherein the object placing table, the conveying mechanism, the weight adjuster and the counter are arranged on the base; the method is characterized in that: the weight adjuster comprises a cross rod, a sliding block capable of moving along the length direction of the cross rod, a push rod fixedly connected with the sliding block and a locking mechanism for fixing the position of the sliding block; the sliding block is sleeved outside the cross rod and is provided with a plurality of weight grooves; because the load that the different positions of the sliding block of the same weight caused on the horizontal pole have been different, in addition if put into the weight in the weight recess, then the weight of the sliding block of the weight of different weights also can change, thereby bring the doubling change of load control range, satisfy the wide detection demand of load control range, thereby realize setting up more accurate load to the concrete soft or hard degree of hardware to be measured, improve the measuring result accuracy.

The locking mechanism comprises a supporting rod used for lifting the sliding block, a first sliding groove used for enabling the supporting rod to move along the length direction of the cross rod, a second sliding groove used for limiting the lifting height of the sliding block, a visual groove penetrating the middle part of the sliding block, a plurality of square lugs arranged at the bottom of the sliding block, a plurality of square grooves matched with the square lugs, and a plurality of clamping blocks distributed on the cross rod at equal intervals; two ends of the supporting rod are movably connected to the push rod; the first sliding groove, the second sliding groove and the square groove are all arranged on the cross rod; the sliding block is at least partially inserted into the second sliding groove, and the gap distance between the sliding block and the second sliding groove is larger than the height of the clamping block; the size of the visual slot is matched with the clamping block; the weight grooves are symmetrically distributed on two sides of the visual groove; when force is applied along the push rod, the force is decomposed into force in the horizontal direction and force in the vertical downward direction, the supporting rod is arranged between the push rod and the sliding block, when the push rod is pressed downwards, the supporting rod serves as a fulcrum to play a role of leverage, the supporting rod changes the force in the vertical downward direction into the force in the vertical upward direction, so that the sliding block is driven to be lifted upwards, the free movement of the sliding block during adjustment is realized, and meanwhile, the operation process is more labor-saving by arranging the supporting rod; after the push rod is loosened, the bottom convex block of the sliding block falls into the square groove, and the movement of the convex block in the horizontal direction is blocked by the square groove, so that the lower part of the sliding block is positioned by the square groove, and the lower part of the sliding block does not deviate any more after the distance is adjusted; meanwhile, the visible groove is embedded with the clamping block, and the movement of the visible groove in the horizontal direction is blocked by the clamping block, so that the upper part of the sliding block is positioned; therefore, through setting up square groove and screens piece, can realize locking the motion of sliding block on the horizontal pole, guarantee that the load on the piece that awaits measuring remains stable throughout to ensure the accuracy nature of testing result.

The weight adjuster also comprises a groove arranged at one end of the cross rod, an end cover matched with the groove, a direction indicator arranged on the side wall of the cross rod and a triangular plate arranged on the sliding block; the width of the end cover is larger than that of the cross rod; the end cover and the groove are clamped, so that the end cover is convenient to take out; because the width of the end cover is larger than that of the cross rod, when the sliding block moves to the end part, the end cover can prevent the sliding block from sliding out of the cross rod, so that the damage of parts or the injury of personnel caused by the sliding block falling out of the cross rod in the movement can be avoided, and the use safety of the equipment can be improved; when adjusting the weight regulator, can refer to the beacon and triangle tablet and remove the sliding block, avoid transferring the wrong position, also further ensure measuring result's accuracy when making the regulation faster.

The object placing table comprises a lifting platform and a positioning material receiving mechanism arranged on the side of the lifting platform; the positioning material receiving mechanism comprises a material receiving box, a positioning arm capable of moving along the inner wall of the material receiving box, a cleaning brush arranged on the side wall of the material receiving box, a sliding rail arranged on the base, a base capable of moving along the length direction of the sliding rail, an air cylinder arranged in the base, a brush seat arranged on the side wall of the material receiving box and provided with a through groove, a handle arranged on the cleaning brush, a tooth groove arranged on the side wall of the material receiving box, two rows of circular teeth arranged in the tooth groove, a positioning block matched with the circular teeth, a grab handle arranged on the positioning block, an extension arm arranged in the positioning arm and an arc-shaped handle arranged on the extension arm; the middle part of the positioning arm is hollowed; when the cleaning brush is arranged in the brush seat, the handle at least partially protrudes out of the brush seat; through the through grooves formed in the side wall of the material receiving box, after the cleaning brush is placed in the brush seat, the handle protrudes out of the brush seat through the through grooves, and therefore the brush is convenient to take; by arranging the positioning block, the positioning block can move in the tooth socket when rotating to a vertical state, and the positioning block is firmly clamped in the circular teeth of the tooth socket when rotating to a transverse position, so that the positioning arm is accurately positioned; by arranging the air cylinder, after the piece to be measured is placed into the platform, if the area of the piece to be measured is smaller than that of the platform, the piece to be measured is clamped by the positioning arm, if the area of the piece to be measured is larger than that of the platform, the air cylinder is started to lift upwards, the piece to be measured is clamped by the positioning arm and the upper surface of the material collecting box, and therefore the positioning arm can always firmly press the piece to be measured aiming at the pieces to be measured with different volumes; the extension arm is arranged, so that when the length of the positioning arm is not enough, the extension arm can be extended out, and the arm length of the positioning arm is increased; through the arrangement of the three positions, the positioning arm is ensured to firmly press the piece to be detected all the time, the friction position is ensured not to move, and the detection result is more accurate.

The lifting platform comprises a lifting seat arranged on the base, a platform sleeved in the lifting seat and a tightening nut used for locking the position of the platform; the platform can move along the axial direction of the lifting seat; through setting up the platform, the piece that awaits measuring of co-altitude is put the back, all can remove the lift seat and adapt to, makes the friction head all the time with the piece in close contact with that awaits measuring, has ensured the feasibility of detecting.

The paper placing mechanism comprises a first wheel body, a second wheel body opposite to the first wheel body, a sliding groove for moving the first wheel body, a bolt sleeve arranged on the side wall of the sliding groove and a bolt arranged in the bolt sleeve; the middle part of the side surface of the first wheel body is provided with a cylindrical lug; through setting up the bolt, when putting into or taking out the paper tape, lift the back with the bolt and rotate outside the spout, the removal of first wheel body in the spout does not have blockking of bolt, alright free movement, and it is very simple and convenient to operate like this, has improved the convenience when putting into or taking out the paper tape greatly, need examine time measuring in batches when dispatching from the factory, can practice thrift partly man-hour, improves detection efficiency.

The conveying mechanism comprises a friction rod, a friction ring arranged on the friction rod, a friction head arranged at the end part of the friction rod, a spring sleeved outside the friction rod, a support arm arranged outside the friction rod, a first conveying roller arranged below the support arm, a second conveying roller arranged on the side of the support arm, a third conveying roller and a fourth conveying roller arranged above the support arm, a level calibrator arranged in front of the support arm and a first motor driving the fourth conveying roller to rotate; through setting up conveying mechanism, make the paper tape keep the tensioning always to a continuous pulling force of paper tape prevents that the paper tape from twining, causes equipment trouble.

The paper collecting mechanism comprises a paper collecting wheel and a second motor for driving the paper collecting wheel to rotate; thereby drive the rotation of paper receiving wheel through the motor and receive the material, can enough make the paper tape keep the continuous friction to the piece that awaits measuring to an effort that can be continuous, can collect the paper tape that rubs again, be favorable to the environmental protection.

In summary, the invention has the following advantages: through setting up weight regulator, make load control range wide, set up more accurate load to the concrete soft or hard degree of hardware that awaits measuring, improve the measuring result accuracy.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a cross-sectional view taken along a-a of fig. 2.

Fig. 4 is a perspective view of the positioning material receiving mechanism of the present invention.

Fig. 5 is a perspective view of the weight adjuster of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, 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.

As shown in fig. 1-5, an RCA paper tape rubbing machine comprises a base 1, a paper placing mechanism 2, a placing table 3, a conveying mechanism 4, a weight adjuster 6, a counter 7 and a paper collecting mechanism 8; the paper placing mechanism 2 is arranged at one end of the base 1; the object placing table 3, the conveying mechanism 4, the weight adjuster 6 and the counter 7 are arranged on the base 1, and the counter is a common counter which can be bought in the market and is not described again; the paper collecting mechanism 8 is arranged at the other end of the machine base 1.

The paper placing mechanism 2 comprises a first wheel body 21, a second wheel body 22, a sliding groove 23, a bolt sleeve 24 and a bolt 25; the middle part of the side surface of the first wheel body 21 is provided with a cylindrical lug for fixing an RCA paper tape; the second wheel body 22 is opposite to the first wheel body 21; the sliding groove 23 is used for moving the first wheel body 21; the bolt sleeve 24 is arranged on the side wall of the sliding groove 23; the bolt 25 is arranged in the bolt sleeve 24, and the bolt sleeve are common bolts and bolt sleeves which can be bought in the market and are not described again; through setting up the bolt, when putting into or taking out the paper tape, lift the back with the bolt and rotate outside the spout, the removal of first wheel body in the spout does not have blockking of bolt, alright free movement, and it is very simple and convenient to operate like this, has improved the convenience when putting into or taking out the paper tape greatly, need examine time measuring in batches to the work piece when dispatching from the factory, practices thrift partly man-hour, improves detection efficiency.

The object placing table 3 comprises a lifting platform 31 and a positioning material receiving mechanism 32; the positioning material receiving mechanism 32 is arranged on the side of the lifting platform 31; the lifting platform 31 comprises a lifting seat 311, a platform 312 and a tightening nut 313; the lifting seat 311 is arranged on the machine base 1; the platform 312 is sleeved in the lifting seat 311, the platform 312 can move along the axial direction of the lifting seat 311, and by arranging the platform, after the pieces to be detected with different heights are placed on the platform, the lifting seat can be moved to adapt, so that the friction head is always in close contact with the pieces to be detected, and the detection feasibility is ensured; the tightening nut 313 is used for locking the position of the platform 312, and the tightening nut is a common tightening nut available on the market and is not described in detail.

The positioning material receiving mechanism 32 comprises a positioning arm 321, a material receiving box 322, a cleaning brush 323, a sliding rail 324, a base 325, a cylinder 326, a brush seat 327, a handle 328, a tooth groove 329, a circular tooth 330, a positioning block 331, a grab handle 332, an extension arm 333 and an arc-shaped handle 334; the material receiving box 322 is arranged below the positioning arm 321; the cleaning brush 323 is arranged on the side wall of the material receiving box 322; the slide rail 324 is arranged on the machine base 1; the base 325 can move along the length direction of the slide rail 324; the cylinder 326 is arranged in the base 325, and the cylinder is a common cylinder available on the market and is not described any more; by arranging the air cylinder, after the piece to be detected is placed into the platform, if the area of the piece to be detected is smaller than that of the platform, the piece to be detected is clamped by the positioning arm, if the area of the piece to be detected is larger than that of the platform, the air cylinder is started to lift up, the piece to be detected is clamped by the positioning arm and the material collecting box, the piece to be detected is guaranteed to be firmly pressed by the positioning arm all the time, the friction position movement caused by the movement of the piece to be detected is avoided, and therefore the accuracy; the brush seat 327 is arranged on the side wall of the material receiving box 322, the brush seat 327 is provided with a through groove, and the handle 328 is arranged on the cleaning brush 323; the tooth grooves 329 are arranged on the side wall of the material receiving box 322; the circular teeth 330 are arranged in the tooth grooves 329 and are arranged in two rows; the positioning block 331 is matched with the circular tooth 330, the positioning block can move in the tooth socket when rotating to a vertical state by arranging the positioning block, and the positioning block is firmly clamped in the circular tooth of the tooth socket when rotating to a transverse position, so that the accurate positioning of the positioning arm is realized, the positioning arm is ensured to always firmly press the piece to be detected, the friction position movement caused by the movement of the piece to be detected is avoided, and the accuracy of a detection result is ensured; the grab handle 332 is arranged on the positioning block 331; the extension arm 333 is arranged in the positioning arm 321, a part of the extension arm can be drawn out from the positioning arm, the arc-shaped handle 334 is arranged on the extension arm 333, the extension arm is convenient to draw out, the extension arm is arranged, when the length of the positioning arm is insufficient, the extension arm extends out, the arm length of the positioning arm is increased, the positioning arm is guaranteed to firmly press the piece to be detected all the time, the friction position movement caused by the movement of the piece to be detected is avoided, and therefore the accuracy of the detection result is guaranteed; when the object to be measured is placed on the lifting platform 31, the positioning arm 321 presses on the upper surface of the object to be measured; when the friction test of the piece to be tested is finished, the cleaning brush 323 sweeps the debris into the material collecting box 322 along the positioning arm 321; when the cleaning brush 323 is arranged in the brush seat 327, the handle 328 at least partially protrudes out of the brush seat 327, and the through groove is formed in the side wall of the material receiving box, so that after the cleaning brush is arranged in the brush seat, the handle protrudes out of the brush seat through the through groove, and the brush is convenient to take.

The weight adjuster 6 comprises a push rod 61, a support rod 62, a sliding block 63, a cross rod 64, a guide mark 65, a triangle board 66 and an end cover 67; the two ends of the supporting rod 62 are movably connected to the push rod 61, and preferably, balls can be embedded in the joint of the supporting rod 62 and the push rod 61, so that on the premise that the two ends of the supporting rod 62 can slide in the push rod 61, the friction force at the joint of the supporting rod 62 and the push rod 61 is reduced, the abrasion at the joint is reduced, and the service life of the supporting rod and the push rod is prolonged; when force is applied along the push rod, the force is decomposed into force in the horizontal direction and force in the vertical downward direction, the supporting rod is arranged between the push rod and the sliding block, when the push rod is pressed downwards, the supporting rod serves as a fulcrum and plays a role of leverage, the supporting rod changes the force in the vertical downward direction into the force in the vertical upward direction, so that the sliding block is driven to be lifted upwards, the free movement of the sliding block during adjustment is realized, the load adjustment range is widened, more accurate load is set according to the specific hardness degree of a to-be-measured piece, and the accuracy of a measurement result is improved; meanwhile, the supporting rod is arranged, so that the operation process is more labor-saving; the sliding block 63 is fixedly connected with the push rod 61, and a plurality of weight grooves 631, a visual groove 632 and a plurality of diamonds 633 are arranged on the sliding block 63; the visual groove 632 is arranged in the middle of the sliding block 63; the weight grooves 631 are equidistantly distributed on two sides of the visual groove 632, specifically, the number of the weight grooves is 6, the loads caused by the sliding blocks with the same weight at different positions on the cross bar are different, and if weights are placed in the weight grooves, the weights of the sliding blocks provided with the weights with different weights can be changed, so that the doubled change of the load adjusting range is brought, the detection requirement of wide load adjusting range is met, more accurate loads are set according to the specific hardness and hardness degree of a to-be-detected piece, and the accuracy of the measuring result is improved; the cross bar 64 is sleeved in the sliding block 63, and the cross bar 64 is provided with a first sliding groove 641, a second sliding groove 642, a square groove 643, a groove 644 and a blocking block 645; the height of the first sliding groove 641 is matched with that of the supporting rod 62, so that the supporting rod can slide in the sliding groove; the sliding block 63 is at least partially inserted into the second sliding groove 642, and the gap distance between the sliding block 63 and the second sliding groove 642 is greater than the height of the catch block 645, so that the sliding block can be lifted up to move; the square groove 643 is matched with the square block 633, after the push rod is loosened, the square block falls into the square groove of the cross rod, and the movement of the square block in the horizontal direction is driven and blocked by the square groove, so that the square block is positioned, the sliding block is not deviated after the distance is adjusted, the load on the piece to be detected is guaranteed to be stable, and the accuracy of a detection result is guaranteed; the clamping blocks 645 are distributed on the cross rod at equal intervals, the size of each clamping block 645 is matched with that of the visible groove 632, preferably, the section of each clamping block is a combination of a triangle and a rectangle, the triangle is arranged on the upper side, the rectangle is arranged on the lower side, the longest side of the triangle is equal to the length of the rectangle, and the two sides of the triangle are overlapped, so that the direct contact surface between the sliding block and the clamping blocks is an inclined surface, and the friction between the sliding block and the clamping blocks is reduced; the direction indicator 65 is arranged on the side wall of the cross rod 64; the triangular plate 66 is arranged on the sliding block 63, and the end cover 67 is arranged at one end of the cross rod 64; when a person pushes the sliding block 63 along the direction of the push rod 61, the supporting rod 62 lifts the sliding block 63, and the sliding block 63 moves along the length direction of the cross rod 64; the width of the end cap 67 is greater than the width of the cross bar 64, and the shape of the end cap 67 is matched with the shape of the fourth groove 644, so that the end cap can be taken out upwards, but has a blocking effect on the sliding block, and the sliding block is prevented from sliding out of the push rod.

The conveying mechanism 4 comprises a friction rod 41, a friction ring 42, a friction head 43, a spring 44, a supporting arm 45, a first conveying roller 46, a second conveying roller 47, a third conveying roller 48, a fourth conveying roller 49, a level calibrator 50 and a first motor 51; the friction comparison ring 42 is arranged on the friction rod 41; the friction head 43 is arranged at the end part of the friction rod 41; the spring 44 is sleeved outside the friction rod 41, and specifically, the spring is a common spring available on the market and is not described again; the supporting arm 45 is arranged outside the friction rod 41; the first motor 51 is used for driving the fourth conveying roller 49 to rotate, and specifically, the motor is a common motor available on the market and is not described again; through setting up conveying mechanism, make the paper tape keep the tensioning always to a continuous pulling force of paper tape prevents that the paper tape from twining, causes equipment trouble.

The delivery mechanism 8 includes a delivery wheel 81 and a second motor 82. The second motor 82 is configured to drive the delivery wheel 81 to rotate, and specifically, the motor is a common motor available on the market and is not described again; thereby drive the rotation of paper receiving wheel through the motor and receive the material, can enough make the paper tape keep the continuous friction to the piece that awaits measuring to an effort that can be continuous, can collect the paper tape that rubs again, be favorable to the environmental protection.

The specific working process is as follows: firstly, evaluating the hardness degree of a piece to be tested, selecting the corresponding weights and the number of clamping blocks, putting the weights into weight grooves, dragging a sliding block along the direction of a push rod, referring to a beacon and a triangular plate during dragging, after dragging to a specified position, loosening the push rod, and enabling a bottom bump of the sliding block to fall into a square groove of a cross rod; placing the piece to be tested on the platform, and pressing the piece to be tested by the supporting arm; taking out a roll of RCA paper tape, lifting the plug pins and then screwing out the plug pins to the outside of the sliding groove, moving the first wheel body, sleeving the RCA paper tape on the cylindrical bumps in the middle of the side edge of the first wheel body, moving and resetting the first wheel body, lifting the plug pins and then screwing the plug pins into the sliding groove; drawing out the paper tape, starting a first motor, sequentially passing the paper tape through a friction head, a friction ring, a first conveying roller, a second conveying roller, a third conveying roller and a fourth conveying roller, and fixing the paper tape on a paper receiving wheel; setting a numerical value on the counter, starting a second motor, and starting a test; after the test is finished, the first motor and the second motor are closed, the cleaning brush is taken out, the scraps are swept into the material receiving box along the supporting arm, and the cleaning brush is put back; moving the positioning material receiving mechanism, taking out the piece to be detected, observing the surface friction degree of the piece to be detected, and recording; lifting the plug pins and then screwing out the plug pins to the outside of the sliding grooves, moving the first wheel body, and taking out and putting the RCA paper tape; the first wheel body is moved to reset, and the bolt is lifted and then screwed into the sliding groove.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. An RCA paper tape friction machine comprises a base (1), a paper placing mechanism (2) arranged at one end of the base (1), an object placing table (3) arranged on the base (1), a conveying mechanism (4), a weight regulator (6), a counter (7) and a paper collecting mechanism (8) arranged at the other end of the base (1); the method is characterized in that: the weight adjuster (6) comprises a cross rod (64), a sliding block (63) capable of moving along the length direction of the cross rod (64), a push rod (61) fixedly connected with the sliding block (63), and a locking mechanism for fixing the position of the sliding block (63); the sliding block (63) is sleeved outside the cross rod (64), and a plurality of weight grooves (631) are formed in the sliding block (63).

2. The RCA tape rubbing machine of claim 1, wherein: the locking mechanism comprises a supporting rod (62) used for lifting the sliding block (63), a first sliding groove (641) used for enabling the supporting rod (62) to move along the length direction of the cross rod (64), a second sliding groove (642) used for limiting the lifting height of the sliding block (63), a visible groove (632) penetrating through the middle part of the sliding block (63), a plurality of square convex blocks (633) arranged at the bottom of the sliding block (63), a plurality of square grooves (643) matched with the square convex blocks (633), and a plurality of clamping blocks (645) distributed on the cross rod (64) at equal intervals; two ends of the supporting rod (62) are movably connected to the push rod (61); the first sliding groove (641), the second sliding groove (642) and the square groove (643) are arranged on the cross rod (64); the sliding block (63) is at least partially inserted into the second sliding groove (642), and the gap distance between the sliding block and the second sliding groove (642) is larger than the height of the clamping block (645); the size of the visual slot (632) is matched with the clamping block (645); the weight grooves (631) are symmetrically distributed on two sides of the visual groove (632).

3. The RCA tape rubbing machine of claim 1, wherein: the weight adjuster (6) further comprises a groove (644) arranged at one end of the cross rod (64), an end cover (67) matched with the groove (644), a direction indicator (65) arranged on the side wall of the cross rod (64), and a triangular plate (66) arranged on the sliding block (63); the width of the end cap (67) is greater than the width of the crossbar (64).

4. The RCA tape rubbing machine of claim 1, wherein: the object placing table (3) comprises a lifting platform (31) and a positioning material receiving mechanism (32) arranged on the side of the lifting platform (31); the positioning material receiving mechanism (32) comprises a material receiving box (322), a positioning arm (321) capable of moving along the inner wall of the material receiving box (322), a cleaning brush (323) arranged on the side wall of the material receiving box (322), a sliding rail (324) arranged on the base (1), a base (325) capable of moving along the length direction of the sliding rail (324), a cylinder (326) arranged in the base (325), a brush base (327) arranged on the side wall of the material receiving box (322) and provided with a through groove, a handle (328) arranged on the cleaning brush (323), a tooth socket (329) arranged on the side wall of the material receiving box (322), two rows of circular teeth (330) arranged in the tooth socket (329), a positioning block (331) matched with the circular teeth (330), a grab handle (332) arranged on the positioning block (331), an extension arm (333) arranged in the positioning arm (321) and an arc-shaped handle (334) arranged on the extension arm; the middle part of the positioning arm (321) is hollow; when the cleaning brush (323) is arranged in the brush seat (327), the handle (328) at least partially protrudes out of the brush seat (327).

5. The RCA paper tape rubbing machine according to claim 4, wherein: the lifting platform (31) comprises a lifting seat (311) arranged on the base (1), a platform (312) sleeved in the lifting seat (311) and a tightening nut (313) used for locking the position of the platform (312); the platform (312) can move along the axial direction of the lifting seat (311).

6. The RCA tape rubbing machine of claim 1, wherein: the paper placing mechanism (2) comprises a first wheel body (21), a second wheel body (22) opposite to the first wheel body (21), a sliding groove (23) used for moving the first wheel body (21), a plug pin sleeve (24) arranged on the side wall of the sliding groove (23), and a plug pin (25) arranged in the plug pin sleeve (24); the middle part of the side surface of the first wheel body (21) is provided with a cylindrical lug.

7. The RCA tape rubbing machine of claim 1, wherein: conveying mechanism (4) include friction lever (41), locate friction on friction lever (41) circle (42), locate friction lever (41) tip friction head (43), cover in outside spring (44) of friction lever (41), locate outside support arm (45) of friction lever (41), locate first conveying roller (46) of support arm (45) below, locate second conveying roller (47) of support arm (45) side, locate third conveying roller (48) of support arm (45) top, fourth conveying roller (49), locate level alignment appearance (50) and the drive in support arm (45) the place ahead fourth conveying roller (49) first motor (51) of rotation.

8. The RCA tape rubbing machine of claim 1, wherein: the paper delivery mechanism (8) comprises a paper delivery wheel (81) and a second motor (82) for driving the paper delivery wheel (81) to rotate.