CN111015458A - Automatic grinding system based on abrasive belt machine - Google Patents

Abstract

The invention belongs to the technical field of workpiece grinding, and particularly relates to an automatic grinding system based on an abrasive belt machine. The system comprises a sanding conveying belt and is characterized by also comprising a fixed frame erected above the upper belt surface of the sanding conveying belt, wherein a transverse guide rail is paved on the fixed frame, and the horizontal guiding direction of the transverse guide rail is vertical to the conveying path of the sanding conveying belt; the grinding clamp sliding rail is matched with the transverse guide rail, so that the grinding clamp can generate reciprocating linear motion relative to the upper belt surface of the sanding conveying belt; the top block is disposed at the loading and unloading end of the cross rail. The invention can greatly reduce the skill requirement on operators, has the advantages of low operation threshold, low labor intensity and high operation safety, and can synchronously improve the grinding quality of the workpiece, thereby effectively ensuring the delivery quality of the workpiece.

Description

Automatic grinding system based on abrasive belt machine

Technical Field

The invention belongs to the technical field of workpiece grinding, and particularly relates to an automatic grinding system based on an abrasive belt machine.

Background

The abrasive belt machine is a mechanical mechanism which utilizes an annular grinding abrasive belt to surround a driven roller and a driving roller, and then utilizes a motor to make the driving roller rotate so as to make the grinding abrasive belt produce directional movement action to grind a workpiece. For the workpiece after casting or cutting, the manual surface finishing treatment is usually performed by an abrasive belt machine, and the following use problems exist: firstly, for a cast or cut workpiece, the basic contour is determined, the workpiece to be polished is usually a small plane, the operation threshold is usually high, the pressure and polishing path are difficult to keep uniform and consistent for a novice, the conditions of workpiece beveling, edge collapse and scalding and workpiece flying are frequent, and the frequency of repairing the workpiece or even directly scrapping the workpiece is high. Secondly, the environment of polishing is bad, the noise and dust seriously damage the occupational health of workers, the heavy and boring work causes the serious loss of workers, and the inconvenience is brought to the workpiece quality and the production management.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, and provides an automatic plane grinding system based on an abrasive belt machine, which is reasonable in structure, reliable and convenient to use, can greatly reduce the skill requirements on operators, has the advantages of low operation threshold, low labor intensity and high operation safety, can synchronously improve the grinding quality of workpieces, and further effectively ensures the delivery quality of the workpieces.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an automatic grind plane system based on abrasive band machine, includes the sanding conveyer belt, this system of its characterized in that still includes:

the fixing frame is erected above the upper belt surface of the sanding conveying belt, a transverse guide rail is paved on the fixing frame, and the horizontal guiding direction of the transverse guide rail is vertical to the conveying path of the sanding conveying belt;

the sliding rails are matched on the transverse guide rails, so that the polishing clamp can generate reciprocating linear motion relative to the upper belt surface of the sanding conveying belt; the polishing clamp comprises a lower fixing block and a balancing weight which is arranged right above the lower fixing block and can generate vertical approaching and separating actions relative to the lower fixing block; a left lug serving as a moving part and a right lug serving as a static part are horizontally and outwards convexly arranged on the outer side surface of the lower fixed block; a horizontal hole is arranged at the left lug in a penetrating way in parallel with the guide direction of the transverse guide rail, and a horizontal sliding column capable of generating reciprocating linear sliding motion in the cavity of the horizontal hole is arranged in the horizontal hole; the horizontal sliding column body is obliquely penetrated with a guide hole, the axis of the guide hole is positioned on the vertical plane and is intersected with the guide direction of the transverse guide rail, and the tip of an included angle formed after intersection points to the direction of the right bump; the polishing clamp further comprises a pull rod, the upper part of the pull rod is fixed on the balancing weight, and wedge-shaped blocks with the shapes matched with those of the hole cavity of the guide hole are arranged at the lower part of the pull rod; the lower part of the pull rod vertically extends downwards and penetrates into the guide hole, and a wedge surface guide matching relation is formed between the outer wall of the wedge block and the wall of the guide hole;

the top block is arranged at the loading and unloading end of the transverse guide rail; one side of the balancing weight and/or the lower fixing block facing the top block is/are provided with a triangular notch groove; a V-shaped guide surface structure for inserting the jacking block is formed by matching the inclined groove surfaces of the two groups of triangular notch grooves, or the inclined groove surfaces of the triangular notch grooves at the lower fixing block and the bottom surface of the balancing weight, or the inclined groove surfaces of the triangular notch grooves at the balancing weight and the top surface of the lower fixing block; when the polishing clamp moves to the position of the top block along the transverse guide rail, the top block is inserted into the V-shaped guide surface structure and forms a wedge surface guide fit relation with the inclined groove surface of the triangular notch groove, and therefore the balancing weight is jacked up to enable the balancing weight to generate vertical direction separation action relative to the lower fixing block.

Preferably, a threaded hole is concavely formed in the top surface of the lower fixing block, a mounting hole radially penetrates through the balancing weight, and the axis of the mounting hole is coaxial with the axis of the threaded hole; the pressure spring is sleeved at the screw rod section of the fastening screw, and the screw rod section of the fastening screw passes through the mounting hole and then forms threaded fixed connection fit with the threaded hole; the mounting hole is a two-section type stepped hole with a thick upper part and a thin lower part, one end of the pressure spring is abutted against the nut end of the fastening screw, and the other end of the pressure spring is abutted against the hole shoulder of the mounting hole.

Preferably, the guide hole is a square inclined hole; the pull rod is a square rod body, the shape of the wedge block is in a straight parallelepiped shape, the rectangular upper side face of the straight parallelepiped wedge block is used for fixedly connecting the pull rod body, two bottom faces of the parallelogram shape of the wedge block are vertical faces, and the rectangular left side face and the rectangular right side face of the wedge block form a left inclined wall and a right inclined wall which are used for the wedge face to match with the guide hole.

Preferably, the left inclined wall and the right inclined wall of the guide hole are respectively provided with a guide chamfered edge for avoiding a wedge-shaped block plugging path.

Preferably, the left convex block comprises four convex rods with the length direction parallel to the extending direction of the right convex block, and the four convex rods are distributed at the outer side wall of the lower fixed block in a rectangular four-point manner; the appearance of the horizontal sliding column is in a square right-angle groove shape, an included angle is formed between the groove length direction of the horizontal sliding column and the guide direction of the transverse guide rail, and a groove cavity of the horizontal sliding column and the outer side wall of the lower fixing block are enclosed together to form the guide hole; the pressing plate vertically arranged on the plate surface is pressed and fixed at the top end of the convex rod, and a gap between the pressing plate and the outer side wall of the lower fixing block is a horizontal action gap of the horizontal sliding column.

Preferably, the upper part of the pull rod is provided with a fixing ring, and a fixing screw horizontally penetrates through the fixing ring and is fixedly connected to the outer side wall of the balancing weight in a threaded manner; the annular hole of the fixing ring is a waist-shaped adjusting hole, and the hole pattern length direction of the waist-shaped adjusting hole is vertically arranged.

Preferably, one end, facing the polishing clamp, of the top block is provided with a guide wheel with a horizontal wheel shaft, and the arrangement height of the guide wheel is consistent with the height of a fit clearance between the balancing weight and the lower fixing block; the guide wheels are two groups, and the wheel shafts are parallel to each other in the vertical direction.

Preferably, the polishing clamp is fixed on the back plate, a sliding rail matching relationship is formed between the back plate and the double-row guide rail type transverse guide rail, and the power cylinder drives the back plate to generate reciprocating displacement motion along the transverse guide rail; a vertical guide post extends vertically downwards from the horizontal plate of the back plate, and guide post holes are correspondingly arranged at the balancing weight so that the sliding rail is inserted on the vertical guide post in a matching manner; the vertical screw penetrates through the horizontal plate from top to bottom and is fixedly connected and matched with the vertical adjusting hole at the balancing weight through screw threads.

Preferably, the fixing frame is further provided with a transverse fixing plate, the transverse fixing plate is provided with a first proximity switch and a second proximity switch for controlling the grinding distance of the workpiece, and a photoelectric counting switch for metering the reciprocating displacement times of the grinding clamp is arranged between the first proximity switch and the second proximity switch; the grinding clamp is provided with an induction rod extending towards the transverse fixing plate so as to be matched with each proximity switch and each photoelectric switch.

Preferably, an angle iron-shaped discharging plate is arranged at the position of the top block, and a third proximity switch for feeding and discharging the fixed-point polishing clamp is arranged on the transverse fixing plate corresponding to the position of the discharging plate.

The invention has the beneficial effects that:

1) on the basis of combining the structure of the existing sanding conveying belt, the invention is additionally provided with the fixing frame structure, so that the fixing frame spans a bearing bridge of the upper belt surface of the sanding conveying belt, the transverse guide rail is used as a guide part, and the reciprocating displacement polishing purpose of the workpiece relative to the upper belt surface is realized by the reciprocating displacement action of the polishing clamp relative to the transverse guide rail. During actual work, when the polishing clamp moves to the loading and unloading end along the transverse guide rail, the inclined groove surface of the triangular notch groove on the balancing weight and/or the lower fixing block can collide with the ejector block, at the moment, the ejector block can be matched with the wedge surface of the inclined groove surface to arch the balancing weight, and then the pull rod fixed with the balancing weight is driven to move upwards. When the pull rod goes upwards, the horizontal sliding column is driven to generate outward horizontal outward movement through the wedge surface matching. Because the right lug is fixed and the horizontal sliding column at the left lug moves outwards, the grinding clamp realizes the unloading action similar to the loosening of the clamping jaw. On the contrary, when filling in the new work piece of treating polishing again between above-mentioned horizontal sliding column and the right lug, the anchor clamps of polishing this moment begin to move outward along transverse guide, and the in-process that moves outward, kicking block can be gradually break away from the chute face in three horn shapes breach groove, and after the balancing weight lost the hunch-up application of force of kicking block, the balancing weight began to descend under self gravity to it is descending to drive the pull rod. After the pull rod moves downwards, the wedge-shaped surface of the wedge-shaped block at the pull rod slides along the guide hole of the horizontal sliding column again, so that the horizontal sliding column moves inwards, and a workpiece is synchronously clamped by matching with the right convex block so as to be ground subsequently.

In conclusion, the invention has reasonable and compact structure, the die opening action is realized by the jacking of the jacking block, the die closing force or the clamping force is ensured by the dead weight of the balancing weight, the grinding distance is ensured by the guiding action of the transverse guide rail, the operation of an operator is only loading and unloading, and even in the foreseeable future, the loading and unloading can be completely finished by the manipulator. Therefore, the invention can greatly reduce the skill requirement on operators, has the advantages of low operation threshold, low labor intensity and high operation safety, and can synchronously improve the grinding quality of the workpiece, thereby effectively ensuring the delivery quality of the workpiece.

2) The vertical approaching and separating actions of the balancing weight relative to the lower fixing block can be realized in a mode of fixing the balancing weight on a vertical guide rail and the like in practical use. The invention preferably adopts a top block structure and is matched with a pressure spring force releasing mode to ensure the simplicity and the compactness of the whole structure. When the polishing clamp transversely displaces to the ejector block, the ejector block enters the triangular notch groove and starts to jack up the balancing weight due to the matching effect of the wedge surfaces of the ejector block and the triangular notch groove, the balancing weight overcomes the self gravity to move upwards, and the pressure spring is gradually pressed in the upward process. And when the polishing clamp leaves the ejector block, the counter weight block moves downwards under the self gravity, and the pressure spring releases force to reset at the same time. In the matching mode, on one hand, the fastening screw can be regarded as a guide pillar, so that the accuracy of the action direction of the balancing weight relative to the lower fixing block is further ensured; on the other hand, the close action of the balancing weight relative to the lower fixing block is realized by the self weight of the balancing weight and the releasing force of the pressure spring, so that the action sensitivity of the balancing weight is further improved, and the mechanism has important guarantee significance for ensuring the long-time normal and reliable action of the mechanism.

3) The guide hole can be a square inclined hole or a round inclined hole, even a prismatic inclined hole structure and the like, and the wedge surface can be matched only by ensuring. The invention preferably adopts a square inclined hole structure to match with the parallelepiped wedge-shaped block, thereby realizing the controllable displacement action of the horizontal sliding column. The wedge-shaped block is rectangular at the upper, lower, front, left and right sides, and the front and back surfaces are parallelogram, so that a parallelepiped structure is formed to ensure the reliability of wedge surface matching. When necessary, guide chamfered edges for avoiding the wedge-shaped block plugging path are uniformly arranged on the left inclined wall and the right inclined wall of the guide hole, namely the left inclined wall and the right inclined wall of the guide hole have partial straight surfaces while retaining partial wedge surfaces, so that the plugging path of the tip of the wedge-shaped block can be avoided, and the high reliability and the high stability of the mechanism action are ensured.

4) For the left bump, it is actually formed by matching four protruding rods, a set of pressing plates and a set of horizontal sliding columns. Through the clamp plate, can realize the quick assembly and disassembly operation of horizontal traveller, horizontal traveller is the same to guarantee the assembly nature of mechanism.

5) And the arrangement of the fixing ring realizes the fixed connection effect of the pull rod relative to the balancing weight. The annular hole of the fixing ring is a waist-shaped adjusting hole, so that the purpose of adjusting the vertical position of the pull rod can be realized, and the effect of adjusting the distance between the pull rod and the guide hole at the position of the horizontal sliding column can be further realized.

6) The top block can directly and rigidly press the triangular notch groove at the polishing clamp; according to the invention, the guide wheel is arranged at the top end of the ejector block, so that the rigid extrusion of the original ejector block relative to the triangular notch groove is converted into rolling extrusion, the working reliability and sensitivity are improved, and the service life is prolonged.

7) In a further preferred embodiment of the present invention, the grinding jig may be regarded as an XY-axis plane motion structure formed by the vertical guide post and the lateral guide rail and fitted to the holder. When the grinding fixture is used, the lifting function of the grinding fixture on the Y axis, namely the vertical direction, is ensured through the vertical guide post, so that the aim of controlling the grinding depth is fulfilled; and the motion of the grinding clamp on the Y axis, namely the motion in the horizontal direction, is realized by relying on the transverse guide rail, so as to realize the controllable effect of the grinding length. The arrangement of the plumb screws can achieve the function of adjusting the maximum sinking depth of the whole polishing clamp so as to achieve the purpose of controlling the maximum grinding depth. The dead weight of the balancing weight can ensure the downward pressure when grinding the workpiece. When necessary, a compression spring group can be even arranged on the vertical guide post to improve the sinking speed of the balancing weight after the jacking force of the jacking block is lost, and the response sensitivity of the mechanism is ensured.

8) Through arranging three groups of proximity switches and a group of photoelectric counting switch, the grinding distance of the grinding clamp is adjusted through the first proximity switch and the second proximity switch, the grinding depth is adjusted through the vertical screw, and the photoelectric counting switch counts the number of times of round trip. And when the preset times or time is finished, the second proximity switch positioned between the first proximity switch and the third proximity switch stops working, and the grinding clamp can move to the third proximity switch at the discharging end to stop so as to realize the material loading and unloading operation.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

FIG. 3 is a perspective view of the grinding fixture in a mated state with respect to the ejector block;

FIG. 4 is an exploded perspective view of the sanding fixture;

FIG. 5 is a perspective view showing the fitting state of the fixing block, the pull rod and the horizontal slide post;

FIG. 6 is a schematic view of the action state of the pull rod relative to the horizontal slide post;

FIG. 7 is a perspective view of the drawbar;

FIG. 8 is a perspective view of the drawbar;

fig. 9 is an exploded view of the tie rod in relation to the horizontal strut.

The actual correspondence between each label and the part name of the invention is as follows:

a-workpiece

10-sanding conveyor belt 20-fixing frame

21-transverse guide rail 22-back plate 22 a-power cylinder 23-plumb guide post

30-grinding clamp 31-lower fixing block 31 a-right bump 31 b-convex rod

32-counterweight block 32 a-mounting hole 32 b-guide column hole 32 c-plumb adjusting hole

33-horizontal sliding column 33 a-guide hole 33 b-guide chamfered edge

34-pull rod 34 a-wedge block 35-triangular notch groove

36-pressure spring 37-fastening screw 38-pressure plate 39-induction rod

40-top block 41-guide wheel

51-transverse fixing plate 52-first proximity switch 53-second proximity switch

54-photoelectric counting switch 55-third approach switch

60-stripper plate

Detailed Description

For ease of understanding, the specific construction and operation of the present invention is further described herein with reference to FIGS. 1-9:

the specific structure of the present invention is shown in fig. 1-9, and the main structure thereof includes a sanding conveyor belt 10, a fixing frame 20, a sanding fixture 30 and a top block 40, wherein:

the sanding belt 10 is also a sanding belt of a conventional sanding machine, and is operated by surrounding a driven roller and a driving roller with an annular sanding belt, and rotating the driving roller by a motor to make the sanding belt perform directional movement so as to sand a workpiece a. In actual use, as shown in fig. 1, a fixed frame 20 is transversely spanned on the upper belt surface of the sanding conveying belt 10, a double-row type transverse guide rail 21 is arranged on the fixed frame 20, and a back plate 22 is matched on the transverse guide rail 21 by a sliding rail. The back plate 22 is driven by a power cylinder 22a so as to be capable of performing a lateral sliding motion with respect to the lateral guide rail 21.

The sanding fixture 30 is secured to the backing plate 22 so as to produce a synchronized controlled linear reciprocating displacement motion with the backing plate 22. Specifically, as shown in fig. 3-9, the grinding fixture 30 is subdivided into a weight block 32, a lower fixing block 31, a pull rod 34, a horizontal slide column 33, and a pressure plate 38. The balancing weight 32 is positioned right above the lower fixing block 31, the fastening screw 37 and the compression spring 36 are used for enabling the balancing weight 32 to be attached to the lower fixing block 31, and the pull rod 34 just uses the reaction force at this time, so that the workpiece is compressed.

The structure of the pull rod 34 is shown in fig. 7 and 9, which is a rod-shaped structure with an upper ring body middle rod body and a wedge block 34a at the lower part. The ring body is screwed on the outer wall of the balancing weight 32 through a fixing screw; the wedge block 34a is rectangular in shape at the upper, lower, front, left and right sides, and has a parallelogram shape at the front and rear sides, thereby forming a parallelepiped structure to ensure the reliability of wedge surface fitting. During actual assembly, the horizontal sliding column 33 with the inner chute-shaped groove is buckled in an area surrounded by four protruding rods 31b extending from the outer wall of the lower fixing block 31 as shown in fig. 4; at this time, the inner inclined groove of the horizontal sliding column 33 as shown in fig. 8 is engaged with the outer sidewall of the lower fixing block 31 to form the guide hole 33 a. If necessary, the left inclined wall and the right inclined wall of the guide hole 33a are both provided with guide chamfered edges 33b for avoiding the insertion and extraction path of the wedge block 34a as shown in fig. 8-9, that is, the left inclined wall and the right inclined wall of the guide hole 33a have partial straight surfaces while retaining partial wedge surfaces, so that the insertion and extraction path of the tip of the wedge block 34a can be avoided, and the high reliability and the high stability of the mechanism action are ensured.

In practice, the end of the transverse rail 21 relatively close to the operator is the discharge end, as in the overall construction shown in fig. 1. At the discharge end, an angle-iron-like discharge plate 60 as shown in fig. 2 is arranged. The weight 32 and the lower fixing block 31 are required to be provided with triangular notches 35 at the rear joint edges as shown in fig. 3-4. The two sets of triangular notches 35 are aligned to form a "V" shaped guide surface configuration for the guide wheel 41 at the top block 40 as shown in fig. 4. When the polishing fixture 30 moves along the transverse guide rail 21 to the position of the guide wheel 41 of the top block 40, the guide wheel 41 is in rolling fit in the V-shaped guide surface structure and forms a wedge surface guide fit relationship with the inclined groove surface of the triangular notch groove 35, so that the balancing weight 32 is lifted up to generate a vertical separation action relative to the lower fixing block 31. Two groups of guide wheels 41 are required to be arranged and are arranged up and down, so that the matching reliability and the action sensitivity of the guide wheels 41 relative to the V-shaped guide surface structure are improved and guaranteed through more flexible rolling matching. The vertical guide post 23 has the function of guiding the counterweight block 32 in the vertical direction, so that the counterweight block 32 can better generate an upward motion under the action of the jacking block 40; on the other hand, once the whole grinding clamp 30 leaves the discharging plate 60, the weight block 32 presses down the fixing block 31 under its own weight, and the whole grinding clamp 30 generates a sinking motion along the vertical guide post 23, so as to ensure that the workpiece a clamped by the grinding clamp 30 sinks to the grinding height. After penetrating through the horizontal plate at the back plate 22, the vertical screw is screwed into the vertical adjusting hole 32c shown in fig. 3, so that the vertical screw is screwed as required to realize the adjustment function of the maximum sinking height of the counterweight 32, thereby controlling the grinding depth on line.

In addition to the above structure, the present invention has a transverse fixing plate 51 disposed behind the back plate 22, i.e., behind the transverse guide rail 21, and a first proximity switch 52, a photoelectric counter switch 54, a second proximity switch 53, and a third proximity switch 55 are sequentially disposed on the transverse fixing plate 51 from far to near. Wherein: the grinding distance of the grinding jig 30 is adjusted by the first proximity switch 52 and the second proximity switch 53, and the closer the distance therebetween, the shorter the reciprocal grinding distance of the workpiece a, and vice versa. The vertical screw can realize the grinding depth adjusting function of the workpiece a through screwing-in and screwing-out operations relative to the balancing weight 32, so as to realize the purpose of controlling the grinding height. The photoelectric counting switch 54 counts the number of round trips to control the grinding effect. When the predetermined number of times or time is completed, the second proximity switch 53 located between the first proximity switch 52 and the third proximity switch 55 stops working, and the grinding jig 30 is displaced to the third proximity switch 55 at the discharging end to stop, so as to achieve the loading and unloading operation.

To facilitate a further understanding of the present invention, the specific workflow of the present invention is described herein with reference to fig. 1-4 and 6 as follows:

when the invention works practically, there are two using modes: one mode is an automatic mode, namely the grinding times or time are preset and the start and stop are carried out by one key; the other mode is a manual mode, and needs manual starting and stopping.

In the automatic mode: the sanding belt 10 begins to operate by first starting the sanding machine. The power cylinder 22a drives the backing plate 22 along the cross rail 21 to deliver the sanding jig 30 along the cross rail 21 to the discharge end where the discharge plate 60 is located. The V-shaped guide surface structure at the grinding fixture 30 collides with the guide wheel 41 at the top block 40 as shown in fig. 2-3, and the top block 40 generates a jacking force to the counterweight 32 due to the V-shaped guide surface structure under the transverse force of the power cylinder 22 a. When the jacking force is greater than the weight of the weight 32, the weight 32 generates a lifting action. When the weight 32 rises, the pull rod 34 is driven to rise. When the pull rod 34 moves upwards as shown by the upward arrow in fig. 6, the horizontal sliding column 33 is driven to move horizontally outwards as shown by the leftward arrow in fig. 6 by the wedge surface fit. The grinding clamp 30 realizes the discharging action similar to the loosening of the clamping jaws because the right lug 31a is fixed and the horizontal sliding column 33 at the left lug moves outwards. Subsequently, the operator places the workpiece a between the horizontal slide 33 and the right projection 31a, presses the start key, and the power cylinder 22a reverses to drive the sanding jig 30 away from the top block 40. The weight 32 loses the lifting force of the top block 40 and begins to fall under the self-weight, and drives the pull rod 34 to move downwards. After the pull rod 34 descends, the wedge surface of the wedge block 34a at the pull rod 34 slides along the guide hole 33a of the horizontal sliding column 33 again, so that the horizontal sliding column 33 moves inwards, and the workpiece a is clamped synchronously by matching with the right lug 31 a. Then, the power cylinder 22a continues to move to drive the polishing clamp 30 to move towards the abrasive belt; due to the existence of the vertical guide post 23, the counterweight 32 moves downwards and presses the workpiece a through the pull rod 34 and the horizontal sliding post 33, and simultaneously, the whole polishing clamp 30 is pressed downwards under the self-weight, so that the whole polishing clamp 30 is integrally sunk, and the workpiece a is pressed to a specified grinding height. The workpiece a starts to be ground in accordance with the downward movement of the grinding jig 30 at the vertical guide post 23 and the forward movement at the lateral guide rail 21. During the grinding process, the grinding distance of the grinding clamp 30 is adjusted through the first proximity switch 52 and the second proximity switch 53; the grinding depth is adjusted by a plumb screw; the photoelectric count switch 54 counts the number of round trips. When the predetermined number of times or time is completed, the second proximity switch 53 between the first proximity switch 52 and the third proximity switch 55 is deactivated, the sanding jig 30 is displaced to the third proximity switch 55 where the stripper plate 60 is located, and the loading and unloading operation is continued, at which point a cycle of operation is completed.

For experienced and sophisticated operators, the power cylinder 22a may be manually operated in a manual mode for the number of round trips, all other modes being the same as the automatic mode described above.

Of course, the above-described arrangements are merely illustrative of the structures in the specific embodiments shown in FIGS. 1-9; in practice, if other power sources such as rack and pinion or even crank block are used to replace the power cylinder 22a, independent slide rail structures are used to replace the fastening screw 37 and the pressure spring 36, and even other electronic sensing structures are used to replace the proximity switches, etc., these conventional changes in the original structure and function of the present invention should be considered as equivalent or similar designs of the present invention and fall within the protection scope of the present invention.

Claims (10)

1. The utility model provides an automatic system of flattening of grinding based on abrasive band machine, includes sanding conveyer belt (10), and its characterized in that this system still includes:

the fixing frame (20) is erected above the upper belt surface of the sanding conveying belt (10), a transverse guide rail (21) is laid on the fixing frame (20), and the horizontal guiding direction of the transverse guide rail (21) is vertical to the conveying path of the sanding conveying belt (10);

the grinding clamp (30) is matched with the transverse guide rail (21) through a sliding rail, so that the grinding clamp (30) can generate reciprocating linear motion relative to the upper belt surface of the sanding conveying belt (10); the polishing clamp (30) comprises a lower fixing block (31) and a balancing weight (32) which is arranged right above the lower fixing block (31) and can generate close vertical movement and separated vertical movement relative to the lower fixing block (31); a left lug as a moving part and a right lug (31a) as a static part are horizontally and outwards convexly arranged on the outer side surface of the lower fixed block (31); a horizontal hole is arranged at the left lug in a penetrating way in parallel with the guiding direction of the transverse guide rail (21), and a horizontal sliding column (33) capable of generating reciprocating linear sliding motion in the hole cavity of the horizontal hole is arranged in the horizontal hole; the horizontal sliding column (33) is obliquely penetrated and arranged with a guide hole (33a), the axis of the guide hole (33a) is positioned on the vertical plane and mutually intersected with the guide direction of the transverse guide rail (21), and the tip of an included angle formed after intersection points to the direction of the right convex block (31 a); the grinding clamp (30) further comprises a pull rod (34), the upper part of the pull rod (34) is fixed on the balancing weight (32), and a wedge-shaped block (34a) with the shape matched with that of the hole cavity of the guide hole (33a) is arranged at the lower part of the pull rod (34); the lower part of the pull rod (34) vertically extends downwards and penetrates into the guide hole (33a), and a wedge surface guide matching relation is formed between the outer wall of the wedge block (34a) and the hole wall of the guide hole (33 a);

a top block (40) arranged at the loading and unloading end of the transverse rail (21); one side of the balancing weight (32) and/or the lower fixing block (31) facing the top block (40) is provided with a triangular notch groove (35); a V-shaped guide surface structure for inserting the jacking block (40) is formed by matching the inclined groove surfaces of the two groups of triangular notch grooves (35), or the inclined groove surface of the triangular notch groove (35) at the lower fixing block (31) and the bottom surface of the balancing weight (32), or the inclined groove surface of the triangular notch groove (35) at the balancing weight (32) and the top surface of the lower fixing block (31); when the polishing clamp (30) moves to the position of the top block (40) along the transverse guide rail (21), the top block (40) is inserted into the V-shaped guide surface structure and forms a wedge surface guide fit relation with the inclined groove surface of the triangular notch groove (35), and therefore the balancing weight (32) is lifted up to enable the balancing weight (32) to generate vertical direction separation action relative to the lower fixing block (31).

2. The automatic smoothing system based on the belt sander as set forth in claim 1, wherein: a threaded hole is concavely formed in the top surface of the lower fixing block (31), a mounting hole (32a) is radially arranged at the position of the balancing weight (32) in a penetrating mode, and the axis of the mounting hole (32a) is coaxial with the axis of the threaded hole; the pressure spring (36) is sleeved at the screw rod section of the fastening screw (37), and the screw rod section of the fastening screw (37) passes through the mounting hole (32a) and then forms thread fixed connection fit with the threaded hole; the mounting hole (32a) is a two-section type stepped hole with a thick upper part and a thin lower part, one end of the pressure spring (36) is abutted against the nut end of the fastening screw (37), and the other end of the pressure spring is abutted against the hole shoulder of the mounting hole (32 a).

3. The automatic smoothing system based on the belt sander as set forth in claim 1 or 2, wherein: the guide hole (33a) is a square inclined hole; the pull rod (34) is a square rod body, the wedge block (34a) is in a straight parallelepiped shape, the rectangular upper side face of the straight parallelepiped wedge block (34a) is used for fixedly connecting a rod body of the pull rod (34), two bottom faces of the parallelogram shape of the wedge block (34a) are vertical faces, and the rectangular left side face and the rectangular right side face of the wedge block (34a) form a left inclined wall and a right inclined wall which are used for the wedge face to be matched with the guide hole (33 a).

4. The automatic smoothing system based on the belt sander as set forth in claim 3, wherein: guide chamfered edges (33b) for avoiding the insertion and extraction path of the wedge block (34a) are respectively arranged on the left inclined wall and the right inclined wall of the guide hole (33 a).

5. The automatic smoothing system based on the belt sander as set forth in claim 3, wherein: the left convex block comprises four convex rods (31b) with the length direction parallel to the extending direction of the right convex block (31a), and the four convex rods (31b) are distributed at the outer side wall of the lower fixing block (31) in a rectangular four-point manner; the shape of the horizontal sliding column (33) is a square right-angle groove body, an included angle is formed between the groove length direction of the horizontal sliding column (33) and the guide direction of the transverse guide rail, and a groove cavity of the horizontal sliding column (33) and the outer side wall of the lower fixing block (31) are enclosed together to form the guide hole (33 a); a pressing plate (38) vertically arranged on the plate surface is pressed and fixed at the top end of the convex rod (31b), and a gap between the pressing plate (38) and the outer side wall of the lower fixing block (31) is a horizontal action gap of the horizontal sliding column (33).

6. The automatic smoothing system based on the belt sander as set forth in claim 5, wherein: a fixing ring is arranged at the upper part of the pull rod (34), and a fixing screw horizontally penetrates through the fixing ring and is fixedly connected to the outer side wall of the balancing weight (32) in a threaded manner; the annular hole of the fixing ring is a waist-shaped adjusting hole, and the hole pattern length direction of the waist-shaped adjusting hole is vertically arranged.

7. The automatic smoothing system based on the belt sander as set forth in claim 1 or 2, wherein: one end, facing the grinding clamp (30), of the ejector block (40) is provided with a guide wheel (41) with a horizontal wheel shaft, and the arrangement height of the guide wheel (41) is consistent with the height of a fit clearance between the balancing weight (32) and the lower fixing block (31); the guide wheels (41) are two groups and the wheel shafts are parallel to each other in the vertical direction.

8. The automatic smoothing system based on the belt sander as set forth in claim 1 or 2, wherein: the polishing clamp (30) is fixed on the back plate (22), and the back plate (22) and the double-row guide rail type transverse guide rail (21) form a slide rail matching relationship; a vertical guide post (23) vertically extends downwards from the horizontal plate of the back plate (22), and a guide post hole (32b) is correspondingly arranged at the counterweight block (32) so as to facilitate the slide rail to be matched and inserted on the vertical guide post (23); the vertical screw penetrates through the horizontal plate from top to bottom and forms thread fixed connection matching with the vertical adjusting hole (32c) at the position of the balancing weight (32).

9. The automatic smoothing system based on the belt sander as set forth in claim 8, wherein: a transverse fixing plate (51) is further arranged on the fixing frame (20), a first proximity switch (52) and a second proximity switch (53) for controlling the grinding distance of the workpiece are arranged on the transverse fixing plate (51), and a photoelectric counting switch (54) for metering the reciprocating displacement times of the grinding clamp (30) is arranged between the first proximity switch (52) and the second proximity switch (53); the grinding clamp (30) is provided with a sensing rod (39) extending towards the transverse fixing plate (51) so as to be matched with each proximity switch and each photoelectric switch.

10. The automatic smoothing system based on the belt sander as set forth in claim 9, wherein: an angle iron-shaped discharging plate (60) is arranged at the position of the top block (40), and a third proximity switch (55) used for feeding and discharging the fixed-point grinding clamp (30) is arranged on the transverse fixing plate (51) corresponding to the position of the discharging plate (60).

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