Four-sided grinding machine

Abstract

The invention relates to the technical field of woodworking instruments and discloses a four-sided grinding machine, characterized in that it comprises a frame and a conveyor arranged thereon, a positioning guide mechanism, a left-side grinding mechanism, a right-side grinding mechanism, an upper wedge-strip grinding mechanism, an upper flat grinding mechanism, a lower wedge-strip grinding mechanism, a lower flat grinding mechanism and a chamfer grinding mechanism, wherein the left-side grinding mechanism comprises a left triangular belt grinding device, a left sponge wheel belt grinding device, a right triangular belt grinding device and a right sponge wheel belt grinding device, which are arranged on the other side of the conveyor.The left side grinding mechanism comprises a left triangular belt grinding device and a left sponge wheel belt grinding device arranged on one side of the conveyor device, and the right side grinding mechanism comprises a right triangular belt grinding device and a right sponge wheel belt grinding device arranged on the other side of the conveyor device; the upper key grinding mechanism comprises a key grinding lifting and lowering mechanism, a box, a key pressure plate assembly, and an annular grinding belt assembly; the upper flat grinding mechanism comprises an upper flat grinding motor seat, an upper drive transverse sliding seat, and an upper flat grinding assembly, and the upper drive transverse sliding seat is connected to the upper flat grinding motor seat and the upper flat grinding motor seat.The upper drive transverse sliding seat is connected between the upper flat launching motor seat and the upper flat launching assembly. The present invention is characterized by high production efficiency, good stability, and good manufacturing quality.

Description

Technical area

[0001] The present invention relates to the technical field of woodworking equipment, in particular to a sanding device. Background technology

[0002] Sanding is the processing of materials with some unevenness, uneven thickness, or materials that do not meet the processing requirements of materials and objects by using sand cloth, grinding wheels, sandpaper, cleaning cloth, non-woven polishing wheels, and other physical removal methods in a way that makes them smoother and flatter or achieves a uniform thickness. The manufacturing process can be a standard method, which can include a variety of lamination processes in production, such as the production of standard structural components, toys and handicrafts or industrial applications, the decoration and furniture industry, flooring and wallboard building materials industry, and so on. As the name suggests, sanding machines perform the sanding work using mechanical devices.Most conventional grinding machines can generally only grind one or two sides at a time, and a few can grind three sides at a time. For example, in Chinese Patent Application No. 201920569187.5, the present inventor disclosed a three-side grinding machine comprising a frame body, a conveying mechanism including a conveyor belt and a drive device, two-side surface grinding mechanisms provided on both sides of the conveyor belt, an upper grinding mechanism provided above the conveyor belt along the feeding direction, and an electrical box electrically connected to the drive device, the two-side surface grinding mechanism, and the upper grinding mechanism. The conveyor belt is provided in the feeding direction, and the pressing mechanism has a lifting device that moves up and down perpendicular to the feeding direction.By combining a two-sided grinding mechanism with a top grinding mechanism, the product is ground on three sides simultaneously, improving production efficiency. However, the disadvantage is that the general fixture plate has multiple sides and chamfers, so the current three-sided grinding machine is not sufficient to meet production needs. Improving production efficiency in terms of equipment processing, structure, and performance is the subject of further improvements. Content of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the conventional technology and provide a four-side grinding machine with simple and convenient operation, high production efficiency and good processing quality.

[0004] The present invention provides the following technical solution to achieve the above-mentioned purpose: a four-side grinding machine, characterized by comprising a frame and a conveyor provided thereon, a positioning guide mechanism, a left side surface grinding mechanism, a right side surface grinding mechanism, an upper wedge grinding mechanism, an upper surface grinding / polishing mechanism, a lower wedge grinding mechanism, a lower surface grinding / polishing mechanism, and a chamfer grinding mechanism. The positioning guide mechanism includes a pressure beam mounted on the top of the conveyor, a lateral wheel assembly mounted on the outside of the conveyor, and a plurality of pressure rollers mounted sequentially on the pressure beam in the conveying direction.

[0005] The left side surface grinding mechanism includes a left triangular belt grinder and a left sponge wheel belt grinder provided on one side of the conveyor, and the right side surface grinding mechanism includes a right triangular belt grinder and a right sponge wheel belt grinder provided on the other side of the conveyor.

[0006] The bevel grinding mechanism comprises the first tilting grinding assembly and the second tilting grinding assembly, which are arranged sequentially along the conveying direction. The first tilting grinding assembly comprises the bevel adjustment bracket (1), the grinding motor (1), and the grinding belt wheel (1). The grinding motor (1) is connected to drive the grinding belt wheel (1), and the grinding motor (1) is mounted on the bevel adjustment bracket. The second tilting grinding assembly comprises the bevel adjustment bracket (2), the grinding motor (2), and the grinding belt wheel (2).

[0007] The upper keystone sanding mechanism includes a keystone lifting mechanism, a box, a keystone pressing plate assembly, an annular sanding belt assembly, a keystone pressing plate assembly, and an annular sanding belt assembly, each inserted into the box. The keystone pressing plate assembly is movably pressed onto the annular sanding belt assembly. The keystone lifting mechanism is arranged vertically and connected to the box, and the box is driven to lift up and down. The lower keystone sanding mechanism is inserted into the upper keystone sanding mechanism. The lower keystone sanding mechanism is located below the upper keystone sanding mechanism and is structurally identical to the upper keystone sanding mechanism.

[0008] The upper-level surface grinding mechanism includes an upper-level surface grinding motor seat, an upper drive cross-thrust seat, and an upper-level surface grinding assembly. The upper drive cross-thrust seat is connected between the upper-level surface grinding motor seat and the upper-level throwing assembly. The lower-level surface grinding mechanism is arranged below the upper-level surface grinding mechanism and its structure is the same as the upper-level surface grinding mechanism.

[0009] To further illustrate the above scheme, a plate seat is provided in the case body one, and a piano key plate assembly one is suspended from the plate seat one. The piano key plate assembly one includes at least two sets of vertically arranged plate cylinders one and a piano key plate one connected to the plate cylinders one. The piano key plate one is driven by the plate cylinders one to push the annular sanding belt assembly one upward to firmly fix it to the upper surface of the plate and perform sanding and grinding.

[0010] Further, the plate seat one is provided with an outwardly extending inductive seat one, the inductive seat one is provided with a number of contact switches one and a lever pressure plate assembly one corresponding to the contact switches one, the inductive seat one is provided with an axle seat one on each side of the inductive seat one, and a positioning shaft one is connected between the two sides of the axle seat one, and the lever pressure plate assembly one is movably pressed together with the contact switches one with the positioning shaft one as a fulcrum.

[0011] Furthermore, the lever assembly one comprises an L-shaped lever frame one, a lever arranged at one end of the L-shaped lever frame one and an induction wheel arranged at the other end of the L-shaped lever frame one.

[0012] Further, two press wheel seats one are provided below the inductor seat one, a press wheel shaft one is connected between the two press wheel seats one, the press wheel shaft one is provided with a press wheel one, a positioning axis hole one is provided in the press wheel seat one corresponding to the press wheel shaft one, a spring one is mounted in the positioning axis hole one, and a cam rod one is provided at the end of the press wheel shaft one, and one end of the spring one is fixed to the cam rod one.

[0013] Further, the key sand lifting mechanism comprises a plurality of key sand lifting columns connected below the box body, the key sand lifting columns being connected to a key sand sprocket drive assembly one, and the key sand sprocket drive assembly one being connected to a key sand lifting and lowering motor device one.

[0014] Furthermore, the upper flat polishing unit comprises an upper flat polishing motor, an upper flat polishing wheel, and an upper flat polishing dust extraction cover located outside the upper flat polishing motor and the upper flat polishing wheel, wherein the upper flat polishing dust extraction cover is connected to an upper flat polishing dust extraction hopper; the upper flat polishing dust extraction cover is provided with a pressure wheel assembly for positioning the incoming plates in an upper pressure position.

[0015] Furthermore, the chamfer grinding mechanism of the sanding belt wheel includes a cover with a dust-absorbing container (1). The dust-absorbing container includes a curved cover body (1), and a dust extraction pipe (1) is located in the curved cover body. The dust extraction pipe (1) guides the dust through the extraction device on the outside of the extraction device during the sanding process to the corresponding containers. The sanding belt wheel (2) has a dust absorption hopper (2) outside the cover, the structure of the dust absorption hopper (2) being consistent with the structure of the hopper (1).

[0016] Further, at the input end of the conveyor device, there is provided a feed conveyor assembly comprising a front conveyor support base, a front conveyor, the front conveyor provided on the front conveyor support base, and an unloading frame and an unloading frame respectively provided on both sides of the front conveyor, wherein the unloading frame is fixed to the unloading frame support base and the unloading frame can be adjusted relative to the unloading frame support base by horizontal movement.

[0017] In order to achieve automatic control, a horizontal motor drive device is provided on the seat, and the horizontal motor drive device includes a horizontal drive motor, a gear and a screw, and a screw sleeve is provided at the bottom of the movable seat, and the screw is provided parallel to the guide rail, and the screw is driven to rotate by the horizontal drive motor and the gear to drive the movable seat to move horizontally.

[0018] The advantageous effects that the present invention can achieve by applying the above-mentioned technical solutions are: 1. The invention adopts the left-side grinding machine, the right-side grinding machine, the upper wedge-bar grinding machine, the upper surface grinding mechanism, the lower wedge-bar grinding machine, the lower surface grinding mechanism for feeding into the conveyor device for the two sides of the board and the upper and lower grinding. For the presence of a chamfer on the board, the special chamfer grinding machine can grind and deburr the upper and lower corners on both sides of the board surface. In the past, this could only be done artificially. It integrates the process that could only be manually ground and chamfered into the automated production line, with a high degree of automation and high production efficiency, greatly reducing labor costs and labor intensity of the workers, and achieving stable performance, greatly improving the processing quality of the products. 2. The present invention consists of a key-grinding mechanism at the input. The sensor system mainly uses a contact switch, a lever-pressure plate assembly, and a pressure wheel assembly to detect the plate, thereby reaching and sending the plate. Through appropriate control expansion, grinding can be achieved only for the plate on the ground. This effectively prevents damage to the plate at both ends of the corners of the plate during the grinding process, thus ensuring the processing quality of the product. This results in product quality. Illustrations Fig. 1 shows a three-dimensional view of the side grinding structure of the four-side grinding machine according to the invention. Fig. Figure 2 shows a partially enlarged view of A in Fig. 1. Fig. 3 shows a three-dimensional view of the side grinding mechanism of the four-side grinding machine of the present invention. Fig. 4 shows a partially enlarged view of B in Fig. 3. Fig. Figure 5 shows a schematic representation of the structure of the left sponge wheel belt sander. Fig. 6 shows a plan view of the side grinding structure of the four-side grinding machine according to the invention. Fig. 7 shows a schematic representation of the structure of the conveyor belt arrangement according to the invention. Fig. 8 is a schematic diagram showing the structure of the upper and lower surface grinding mechanisms of the four-side grinding machine of the present invention. Fig. Figure 9 shows a partially enlarged view of C in Fig. 8. Fig. 10 shows a schematic representation of the three-dimensional structure of the upper and lower surface grinding mechanism of the present invention. Fig. 11 shows a schematic representation of the lateral three-dimensional structure of the upper and lower surface grinding mechanism of the present invention.

[0019] Description of the accompanying drawings: 1, frame 2, conveyor 3, positioning guide mechanism 3-1, pressure beam 3-11, pressure roller 3-2, side wheel assembly 3-21, wheel support seat 3-22, wheel 4, left side grinding mechanism 4-1, left triangular belt grinding device 4-11, belt guide wheel 4-12, belt 1 4-13, motor drive device 4-14, belt guard 4-2 4-21, adjustment guide assembly 4-22, adjustment slide 4-23, pallet 4-24, sponge wheel 4-25, belt wheel 4-26, sanding belt two 4-27, single suction hopper 4-28, adjustment cylinder 5, right side grinding mechanism 5-1, right triangular grinding mechanism 5-2, right sponge wheel grinding mechanism 6, upper key grinding mechanism 6-1, Keyboard grinding lift mechanism 6-101, keyboard grinding lift column 6-102, keyboard grinding lift motor 6-2, housing one 6-3, keyboard pressure plate assembly 6-31, pressure plate cylinder 6-4, circular grinding belt assembly 6-5, pressure plate seat 6-6, scanning seat 6-7, contact switch 6-8, lever pressure plate assembly 6-81,L-shaped lever frame 6-82, lever 6-83, sensor or induction wheel 6-9, axle seat 6-10, positioning axles 6-11, pressure wheel seat 6-12, pressure wheel shaft 6-13, spring 7, upper surface grinding mechanism 7-1, upper surface grinding motor seat 7-2, upper drive cross-joint seat 7-3, upper surface grinding assembly 7-31, upper surface grinding motor 7-32, upper surface grinding wheel 7-33, upper surface grinding extraction cover 7-34, upper surface grinding extraction funnel 8, lower piano key grinding mechanism 9, lower flat casting mechanism 10, chamfer grinding mechanism 10-1, the first tilting grinding assembly 10-11, chamfering adjustment bracket 10-11, chamfering riser 10-11 10-112, Chamfering crossbar one 10-113, Longitudinal and transverse locking one 10-114, Raising and lowering hand crank one 10-115, Connecting end 10-117, Screw one 10-118, Motor seat plate one 10-12, Grinding motor one 10-13, Grinding belt wheel one 10-2, Second bevel grinding assembly 10-21, Bevel adjustment bracket two 10-22, Grinding motor two 10-23,Grinding belt wheel two 11, feed conveyor assembly 11-1, front conveyor support seat 11-2, front conveyor 11-3, outlet 11-4, outlet frame 11-41, side plate frame 11-42, triangular plate 11-43, positioning base plate 11-431, horizontal slot 12, conveyor., Examples of implementation

[0020] "Width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "upper," "bottom," "inside," "outside," "clockwise," "counterclockwise," and the like, used to indicate orientation and positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used solely to facilitate illustration of the present invention and simplify description. They are not intended to suggest or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and are not to be construed as limiting the specific scope of the present invention.

[0021] Furthermore, the terms "first" and "second," where present, are used for descriptive purposes only and should not be understood to imply a relative importance or an implied indication of the number of technical features. Thus, the limitation that there is a "first" or "second" feature may expressly or implicitly include one or more such features, and in the description of the present invention, "at least" means one or more than one feature, unless expressly and specifically limited otherwise. In the description of the present invention, "at least" means one or more features, unless expressly and specifically limited otherwise.

[0022] For the purposes of the present invention, the terms "assembly", "connection", "terminal", unless expressly stated and limited otherwise, are to be understood in a broad sense, e.g., they can be fixed connections, detachable connections, or one-piece connections; they can be mechanical connections; they can be connected directly or via an intermediate medium; they can be connected internally between two elements. For example, it can be a fixed connection, a detachable connection, or a one-piece connection; it can be a mechanical connection; it can be a direct connection, a connection via an intermediate medium, or an internal connection of the two elements. A person skilled in the art will understand the specific meaning of the above terms in the context of the present invention on a case-by-case basis.

[0023] For the purposes of the invention, unless otherwise stated and limited, the "over" or "under" of a first feature on a second feature may include direct contact between the first and second features, or it may include contact between the first and second features not directly but via another feature between them. Furthermore, "over," "under," and "on" the first feature above the second feature includes the first feature being directly above and diagonally above the second feature, or simply states that the first feature is horizontally higher than the height of the second feature. Height above the height of the second feature.The terms "above," "below," and "beneath" the first feature imply that the first feature is directly below or diagonally below the second feature, or simply indicate that the first feature is at a lower horizontal elevation than the second feature.

[0024] The specific embodiments of the present invention will be described below with reference to the accompanying drawings in order to make the technical solution of the present invention and its advantageous effects clearer and more apparent. The following description of the embodiments with reference to the accompanying drawings is provided by way of example and is intended to illustrate the present invention and is not to be construed as limiting the present invention.

[0025] As in the Fig. 1 to Fig.11, the present invention is a four-side grinding machine comprising a frame 1 and a conveyor 2 provided thereon, a positioning guide mechanism 3, a left-side grinding mechanism 4, a right-side grinding mechanism 5, an upper key grinding mechanism 6, an upper surface grinding / polishing mechanism 7, a lower key grinding mechanism 8, a lower surface grinding / polishing mechanism 9, and a chamfer grinding mechanism 10. The left-side surface grinding mechanism 4, the right-side surface grinding mechanism 5, the upper key grinding mechanism 6, the upper surface grinding mechanism 7, the lower key grinding mechanism 8, the lower surface grinding mechanism 9, and the chamfer grinding mechanism 10.Chamfering and grinding mechanisms 10 are all provided along the conveying direction of the conveyor device 2, and the conveyor device 2 may use a conveyor roller method or a conveyor belt method, or a combination of a conveyor roller and a conveyor belt method for conveying. However, since these are all conventional conveying means, they will not be described in detail here. In this embodiment, a supply conveyor assembly 11 is provided at the input end of the conveyor device 2. The supply conveyor assembly 11 includes a front conveyor support seat 11-1, a front conveyor belt 11-2, the front conveyor belt 11-2 is provided on the front conveyor support seat 11-1, and both sides of the front conveyor belt 11-2 are provided with a discharge frame support seat 11-3 and a discharge frame 11-4. The discharge frame 11-4 is fixed to the discharge frame 11-1, and the discharge frame 11-4 is fixed to the discharge frame 11-1.The output frame 11-4 is fixed to the output frame support 11-3, the output frame 11-4 can be moved horizontally relative to the output frame support 11-3, and the distance between the two sides of the output frame 11-4 can be adjusted to adapt to different widths of the plates to be loaded.The discharge frame 11-4 includes a side plate frame 11-41 and a triangular plate 11-42 perpendicular to the side plate frame. A positioning base plate 11-43 is provided on the underside of the triangular plate 11-42. The positioning base plate 11-43 is provided with horizontal slotted holes 11-431. The discharge frame holder 11-3 is provided with fasteners that are screwed into the horizontal slotted holes 11-431. The relative position of the fasteners and the horizontal slotted holes 11-431 can be achieved by adjusting the fasteners and the horizontal slotted holes 11-431. The relative position of the fasteners and the horizontal slotted holes 11-431 can be adjusted to realize the horizontal position of the discharge frame 11-4.This construction can be suitable for processing different widths of panels, especially some smaller widths of battens which can also be applied.

[0026] The positioning guide mechanism 3 includes a press beam 3-1 arranged on the top side of the conveyor 2 and a lateral wheel assembly 3-2 arranged on the outside of the conveyor 2. A plurality of press rollers 3-11 are arranged sequentially on the press beam 3-1 along the conveying direction, and there is a gap between the press rollers 3-11 so that the products fed from the conveyor 2 can be positioned by the plurality of press rollers 3-11. The lateral cushion wheel assembly 3-2 includes a cushion wheel support seat 3-21 and a plurality of cushion wheels 3-22 arranged sequentially along the conveying direction to laterally position the conveyed products.The support seat 3-21 for the support wheel is an inverted L-shaped plate, the plurality of support wheels 3-22 are sequentially fixed to the top of the support seat 3-21 for the support wheel, and the vertical part of the support seat 3-21 for the support wheel is fixed to the side of the conveyor device 2 to enable smooth forward transportation of the plate material and avoid extrusion and damage of the plate material during the conveying process.

[0027] The left side surface grinding mechanism 4 and the right side surface grinding mechanism 5 are structurally identical and are respectively provided on both sides of the conveyor 2 to grind both sides of the board on the conveyor 2. Specifically, the left side grinding mechanism 4 includes a left triangular abrasive belt grinder 4-1 and a left sponge wheel abrasive belt grinder 4-2 provided on one side of the conveyor 2, and the right side grinding mechanism 5 includes a right triangular abrasive belt grinder 5-1 and a right sponge wheel abrasive belt grinder 5-2 provided on the other side of the conveyor 2. Taking the left side grinding mechanism 4 as an example, the left triangular abrasive belt grinder 4-1 includes a triangular distribution of three abrasive belt guides.The left triangular belt sander 4-1 includes three sanding belt guide wheels 4-11 arranged in a triangle and a sanding belt 4-12 arranged outside the sanding belt guide wheels. One of the sanding belt guide wheels 4-11 acts as the active wheel and is connected to a motor drive device 4-13, which drives the sanding belt 4-12 to rotate through the motor drive device 4-13 to perform sanding on the left side surface of the panel. A sanding belt guard 4-14 is provided outside the sanding belt guide wheel 4-11 and the sanding belt 4-12 to prevent splashing of dusty wood chips generated during the sanding process.The left sponge wheel sanding belt sanding device 4-2 includes an adjustment guide assembly 4-21, an adjustment slide plate 4-22, a pallet 4-23 and sponge wheels 4-24, belt wheels 4-25 and two sanding belts 4-26 provided thereon, and the adjustment guide assembly 4-21 is vertically fixed to the side of the frame 1, and the adjustment slide plate 4-22 is provided with holes corresponding to the adjustment guide assembly 4-21 so that the adjustment slide plate 4-22 can slide horizontally along the adjustment guide assembly 4-21. The sponge wheel drive motor 4-24 is mounted on the adjustment slide plate 4-22. The pallet 4-23 is mounted on the upper part of the sponge wheel drive motor. The motor shaft of the sponge wheel drive motor is connected through the pallet 4-23 to drive the sponge wheel 4-24. The sanding belt 4-26 is mounted on the sponge wheel 4-24, and the belt pulley 4-25 is mounted on the outside.The sanding belt 4-26 is mounted on the outside of the sponge wheel 4-24 and the belt pulley 4-25. The sponge wheel 4-24 and the belt pulley 4-25 are provided with a single dust extraction hopper 4-27 on the outside, which can be used to extract dust with an external dust extraction device. A side support plate is provided on the side of the frame 1, and an adjusting cylinder 4-28 is horizontally fixed to the side support plate. The adjusting cylinder 4-28 is connected to the drive of the adjusting slide plate 4-22. The horizontal position of the left sponge wheel belt sander 4-2 can be changed by driving the adjusting slide plate 4-22 through the adjusting cylinder 4-28 to slide along the adjusting guide assembly 4-21 to adapt to the sanding needs of different panel widths.

[0028] The bevel grinding mechanism 10 includes the first tilt grinding assembly 10-1 and the second tilt grinding assembly 10-2, which are arranged sequentially along the conveying direction. The first tilt grinding assembly 10-1 includes the bevel adjustment bracket 10-11, the grinding motor 10-12, and the grinding belt wheel 10-13. The grinding motor 10-12 is connected to the drive of the grinding belt wheel 10-13, and the grinding motor 1 is mounted on the bevel adjustment bracket 10-11. The grinding motor 1 is mounted on the bevel adjustment bracket 10-11. The second tilting grinding assembly 10-2 includes the bevel adjustment bracket two 10-21, the grinding motor two 10-22, and the grinding belt wheel two 10-23, wherein the grinding motor two 10-22 is connected to the drive of the grinding belt wheel two 10-23, the grinding motor two 10-22 is mounted on the bevel adjustment bracket two 10-21; the grinding motor one 10-12 and the grinding motor two 10-22 are tilted upwards and downwards, respectively.Grinding motor one 10-12 and grinding motor two 10-22 are set to an upward and downward tilt position, respectively, and drive grinding belt wheel one 10-13 and grinding belt wheel two 10-23 to chamfer the top and bottom corners of the panel. Chamfering adjustment bracket one 10-11 includes upright chamfering bar one 10-111, cross-chamfering bar one 10-112, longitudinal and transverse locking device one 10-113, lifting crank one 10-114, and connecting end one 10-115. A riser seat one 10-116 is welded to the machine base, and the upright chamfering bar one 10-111 is inserted vertically onto the riser seat one 10-116. The longitudinal and transverse locking device 10-113 is provided with a rod sleeve which corresponds to the bevelled rod 10-111 orThe lifting handle 10-114 is connected to the top of the beveled rod 10-111 by a screw 10-117 connected to the rod sleeve. The lifting handle 10-114 is driven by rotating the lifting handle 10-114 to the longitudinal and transverse locking device 10-117. The hand crank 10-114 drives the longitudinal and transverse locking device 10-113 to lift, thereby changing the up and down position of the grinding motor 1. A motor seat plate 10-118 is connected to the connecting end 10-115, and the grinding motor 10-12 is fixed to the motor seat plate 10-118.In this embodiment, the back of motor seat plate one 10-118 is vertically connected to shaft one, and shaft one is connected to connection head one 10-115, so that the inclination angle of grinding motor one 10-12 can be changed by rotating motor seat plate one 10-118 to adapt to the chamfering requirements. The structure of chamfer adjustment bracket two 10-21 is the same as that of chamfer adjustment bracket one 10-11 and will not be repeated here.

[0029] After the board has completed the side grinding process of the left side surface grinding mechanism 4 and the right side surface grinding mechanism 5, and the chamfer grinding process of the chamfer grinding mechanism 10, the processing of the side of the board is completed; then it enters the next station for grinding the upper and lower surfaces of the board. That is, the upper and lower surfaces of the board are ground by the upper key grinding mechanism 6, the upper surface grinding mechanism 7, the lower key grinding mechanism 8, and the lower surface grinding mechanism 9.

[0030] The upper key grinding mechanism 6 includes a key sand lifting mechanism 16-1, a box 16-2, a key pressing plate assembly 16-3, and an annular sanding belt assembly 16-4. A key pressing plate assembly 16-3 and an annular sanding belt assembly 16-4 are each installed in a box 16-2. A key pressing plate assembly 16-3 is movably pressed onto an annular sanding belt assembly 16-4. A key sand lifting mechanism 16-1 is vertically installed and connected to a box 16-2, which lifts the box 16-2. The lower key grinding mechanism 8 is installed below the upper key grinding mechanism 6, and its structure is consistent with the upper key grinding mechanism, so only the upper key grinding mechanism will be described here.The housing body 6-2 connects, the housing body 6-2 lifts; the lower wedge-shaped grinding mechanism 8 is set in the upper wedge-shaped grinding mechanism 6 below. Its structure and that of the upper wedge-shaped grinding mechanism are consistent, so only the structure of the upper wedge-shaped grinding mechanism will be described here, and the specific structure of the lower wedge-shaped grinding mechanism will not be repeated here. A conveyor belt 12 is provided below the housing body 6-2, and the housing body 6-2 is arranged across the conveyor belt 12. An opening for the passage of the conveyor belt 12 is provided in the lower part of the housing body 6-2, and the upper surface of the board fed by the conveyor belt 12 is ground by means of the annular grinding belt assembly 6-4.

[0031] The said housing body one 6-2 is provided with a pressure plate seat one 6-5, the piano key pressure plate assembly one 6-3 is suspended from the pressure plate seat one 6-5, the piano key pressure plate assembly one 6-3 comprises three sets of side-by-side pressure plate cylinders one 6-31 and the piano key pressure plate a connected to the pressure plate cylinders one 6-31, the pressure plate cylinders one 6-31 are arranged vertically, the pressure plate cylinders one 6-31 drive the piano key pressure plate one of the upper pressure ring grinding belt assembly one 6-4 so that it fits closely against the upper surface of the plate and performs grinding or polishing.

[0032] It should be noted that if the plate is already running before it enters the conveyor belt, piano key plate assembly one 6-3, the front and rear edges of the plate will be ground with piano keys, which may cause it to be worn or even damaged, affecting the processing quality of the plate. Therefore, the plates must undergo strict inspection when entering or leaving the piano key grinding station. In this embodiment, the control is unified by the main controller configured with a time-delay module. The main controller may be a P89C51RD2 microcontroller, which is not described here because the technology is more mature.When the plate is inserted into the piano key grinding station to receive the entry information and transmitted to the main controller, a delay is controlled by the delay module on the piano key grinding mechanism, so that the leading edge of the plate is passed through the piano key grinding station, and then the annular grinding belt assembly and the piano key plate assembly start grinding the surface of the plate. This effectively prevents the piano key grinding process from causing damage to the end corners of the plate. Structurally, the plate seat (6-5) is provided with an inductive seat (6-6) extending outward. The inductive seat (6-6) is provided with a plurality of contact switches (6-7) and a lever plate assembly (6-8) corresponding to the contact switches (6-7).The contact switches (6-7) are electrically connected to the main control unit. The two sides of the inductive seat (6-6) are each provided with an axle seat (6-9), and the two sides of the axle seat (6-9) are connected to each other by positioning. The two sides of the axle holders one 6-9 are connected to the two sides of the axle holders one 6-10, and the lever assembly one 6-8 is rotatably mounted on the positioning axes one 6-10 and cooperates with the contact switches one 6-7 in a movable upper pressure. The lever assembly one 6-8 comprises an L-shaped lever frame one 6-81, a lever one 6-82 arranged at one end of the L-shaped lever frame one 6-81, and an induction wheel one 6-83 arranged at the other end of the L-shaped lever frame one 6-81.Two pressure wheel seats one 6-11 are arranged below the inductor seat one 6-6, the two pressure wheel seats one 6-11 are distributed in a left-right direction, and a pressure wheel axis one 6-11 is connected between the two pressure wheel seats one 6-11 and one pressure wheel axis one 6-10, and a contact switch one 6-7 is movably pressed. The two pressure wheel seats one 6-11 are distributed on the left and right, the two pressure wheel seats one 6-11 are connected to each other with a pressure wheel shaft one 6-12, the pressure wheel shaft one 6-12 is provided with a pressure wheel one, the pressure wheel seat one 6-11 is provided with a fixing hole one corresponding to the pressure wheel shaft one 6-12, the fixing hole one is provided with a spring one 6-13, and a cam rod one is provided at the end of the pressure wheel shaft one 6-12, and the end of the spring one 6-13 is attached to the cam rod one.

[0033] Further, the key sand lifting mechanism 16-1 includes a plurality of key sand lifting columns 16-101 connected to the bottom of the box body 16-2. The key sand lifting columns 16-101 are connected to the key sand sprocket drive assembly 1, and the key sand sprocket drive assembly 1 is connected to the key sand lifting motor device 16-102. The key sand lifting motor device 16-102 drives the key sand lifting and lowering mechanism 16-102 through the key sand sprocket drive assembly 1 in a sprocket transmission manner. The sprocket drive drives the piano key sand lifting column 1 to operate it and drive the box body 1 to lift.

[0034] The upper surface casting mechanism 7 includes the upper surface grinding motor seat 7-1, the upper drive cross-butt seat 7-2, and the upper surface grinding assembly 7-3, the upper drive cross-butt seat 7-2 being connected between the upper surface grinding motor seat 7-1 and the upper surface grinding assembly 7-3; the lower surface grinding mechanism 9 is arranged below the upper surface grinding mechanism 7, the structure of which is the same as the upper surface grinding mechanism 7.For example, the upper surface grinding mechanism 7, the upper surface grinding assembly 7-3, includes the upper surface grinding motor 7-31, the upper surface grinding wheel 7-32, and the upper surface grinding dust extraction cover 7-33. The upper surface grinding motor 7-31 and the upper surface grinding wheel 7-32 are located outside the upper surface grinding motor 7-31 and the upper surface grinding wheel 7-32. The upper surface grinding dust extraction cover 7-33 is connected to the upper surface grinding dust extraction hopper 7-34. The upper surface grinding dust extraction cover 7-33 is equipped with a pressure wheel assembly used to perform top pressure positioning of the sheet material to be fed. The top pressure is used to position the fed plates.

[0035] The frame one comprises a machine base and a movable seat movably disposed on the machine base, and a horizontal sliding mechanism is connected between the movable seat and the machine base, and the horizontal sliding mechanism includes at least two horizontally arranged guide rails and a sliding connecting plate compatible with the guide rails, and the two guide rails are arranged parallel to each other, and the movable seat is fixed on the two sets of sliding connecting plates, and it can be adjusted to move left and right along the guide rails; and there is a horizontal motor driving device disposed on the machine base and a horizontal motor driving device including a horizontal drive motor, a gear, and a screw.The horizontal motor drive device includes a horizontal drive motor, a gear box and a screw, and a screw sleeve is provided at the bottom of the movable seat, and the screw is set parallel to the guide rail, and the screw is driven to rotate by the horizontal drive motor and the gear box to drive the movable seat to a horizontal movement.

[0036] The present invention compared with the existing technology, 1. In the sheet feeding end of the feeding conveyor belt assembly, between the two sides of the discharge frame can be adjusted by adjusting the distance according to different widths of the fed boards, for a wide board, especially for a narrow width of the board., In existing grinding machines, there are also difficulties in completing the processing or poor quality in the processing, but the present invention can easily solve these.

[0037] 2. In response to the existing problems with plate chamfering, the specially designed chamfer grinding mechanism can grind and deburr surface edges upwards and downwards on both sides of the plate. Conventional equipment is only capable of manually grinding chamfers. The work steps allow for integration into automated production equipment. The entire machine has a high degree of automation, high production efficiency, significantly reduced labor costs and labor intensity for workers, stable performance, and significantly improved product processing quality.

[0038] 3. The present invention of the key grinding mechanism at the input end of the set, mainly through the contact switch, the lever pressure plate assembly, and the pressure wheel assembly of the sensor system, enables the detection and transmission of the plate. Through appropriate expansion of the control, grinding can be achieved only for the plate on the ground. Grinding is not performed on the plate at both ends of the corners, thus effectively avoiding damage to the plate at both ends of the corners of the plate during the grinding process, thus ensuring the processing quality of the product.

[0039] The above-described is only a preferred embodiment of the present invention, and it should be appreciated that a person of ordinary skill in the art may make a number of deformations and improvements without departing from the creative conception of the present invention, all of which fall within the scope of protection of the present invention. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] CH 201920569187.5

[0002]

Claims

[1] Four-sided grinding machine, characterized by that it comprises a frame, a main control and a conveyor device arranged on the frame, a guide mechanism for positioning, a left-side grinding mechanism for the side surface, a right-side grinding mechanism for the side surface, an upper wedge-bar grinding mechanism, an upper surface grinding mechanism, a lower wedge-bar grinding mechanism, a lower surface grinding mechanism and a chamfer grinding mechanism, wherein the left-side grinding mechanism, the right-side grinding mechanism, the upper wedge-bar grinding mechanism, the upper flat-casting mechanism, the lower wedge-bar grinding mechanism, and the chamfer grinding mechanism are arranged in the conveying direction along the conveying device; wherein the positioning guide mechanism comprises a pressure beam mounted on the top of the conveyor, a lateral wheel assembly mounted on the outside of the conveyor, and a plurality of pressure rollers mounted sequentially on the pressure beam in the conveying direction; wherein the left-side side surface grinding mechanism includes a left triangular belt grinder and a left sponge wheel belt grinder provided on one side of the conveyor, and the right-side side surface grinding mechanism includes a right triangular belt grinder and a right sponge wheel belt grinder provided on the other side of the conveyor; wherein the bevel grinding mechanism comprises a first tilt grinding assembly and a second tilt grinding assembly, which are arranged one after the other along the conveying direction; the first tilt grinding assembly comprises a bevel adjustment bracket one, a grinding motor one, and a grinding belt wheel one, wherein the grinding motor one is connected to drive the grinding belt wheel one, the grinding motor one is mounted on the bevel adjustment bracket; the second tilt grinding assembly comprises a bevel adjustment bracket two, a grinding motor two, and a grinding belt wheel two, wherein the upper wedge grinding mechanism comprises a key sand lifting mechanism, a box, a key pressure plate assembly, and an annular sanding belt assembly, wherein the key pressure plate assembly and the annular sanding belt assembly are each inserted into the box, and the key pressure plate assembly is movably pressed onto the annular sanding belt assembly; wherein the key sand lifting mechanism is arranged vertically and connected to the box, and the box is driven to lift up and down; wherein the lower wedge grinding mechanism is inserted into the upper wedge grinding mechanism, and wherein the lower wedge grinding mechanism is located below the upper wedge grinding mechanism and is structurally identical to the upper wedge grinding mechanism; wherein the upper surface grinding mechanism comprises an upper surface grinding motor seat, an upper drive cross seat, and an upper surface grinding assembly, and the upper drive cross seat is connected between the upper surface grinding motor seat and the upper surface grinding assembly; the lower surface grinding mechanism is arranged below the upper surface grinding mechanism and its structure is the same as that of the upper surface grinding mechanism; wherein said housing body is provided with a plate seat, a key pressure plate is suspended from the plate seat, the key pressure plate comprising three groups of plate cylinders arranged in the vertical direction, and the key pressure plate is connected to the plate cylinders, and the key pressure plate is driven by the plate cylinders to press the annular sanding belt assembly from above; wherein the plate seat one is provided with an outwardly extending inductor seat one, the inductor seat one is provided with a number of contact switches one and a lever pressure plate assembly one corresponding to the contact switches one, both sides of the inductor seat one are provided with a shaft seat one, and the both sides of the shaft seat one are connected to a positioning shaft one, the lever pressure plate assembly one rotates with the positioning shaft one as a fulcrum, and the lever pressure plate assembly one is movably pressed together with the contact switches one; wherein the lever plate assembly one comprises an L-shaped lever frame one, a lever plate one provided at one end of the L-shaped lever frame one, and an induction wheel one provided at the other end of the L-shaped lever frame one, wherein the L-shaped lever frame one is rotatably connected to the positioning axis rod one, the induction wheel one is in contact with an upper surface of the conveyor device, and the lever plate one is in contact with a contact switch; wherein two press wheel seats one are provided under the inductor seat one, a press wheel shaft one is connected between the two press wheel seats one, a press wheel shaft one is provided with a press wheel one, a positioning shaft hole one is provided in the press wheel seat one corresponding to the press wheel shaft one, a spring one is installed in the positioning shaft hole one, a cam rod one is provided at the end of the press wheel shaft one, and one end of the spring one is supported on the cam rod one; wherein the upper surface grinding assembly comprises an upper surface grinding motor, an upper surface grinding wheel, and an upper surface grinding dust extraction cover disposed outside the upper surface grinding motor and the upper surface grinding wheel, wherein the upper surface grinding dust extraction cover is connected to an upper surface grinding dust extraction hopper, and the upper surface grinding dust extraction cover is provided with a pressure wheel assembly; wherein a feed conveyor assembly is provided at the input end of the conveyor device, the feed conveyor assembly comprising a front conveyor support seat and a front conveyor, the front conveyor being provided on the front conveyor support seat, the front conveyor being provided on both sides of the front conveyor with an output frame support and an output frame, the output frame being fixed to the output frame support, and the output frame being adjusted relative to the horizontal movement of the output frame support; wherein the main controller is equipped with a time delay module; wherein, in operation, a contact switch detects a signal that the board enters the upper wedge-bar grinding station and transmits it to the main controller, and the time delay module performs time delay control of the upper wedge-bar grinding mechanism so that the leading edge of the board passes through the upper wedge-bar grinding station and then activates the annular sanding belt assembly one and the wedge-bar pressure plate assembly one to grind the surface of the board. [2] Four-sided grinding machine according to claim 1, characterized bythat the key cutter lifting mechanism one comprises a plurality of key cutter lifting columns one connected to the lower part of the box body, the key cutter lifting columns one being connected to a key cutter sprocket drive assembly one, and the key cutter sprocket drive assembly one being connected to a key cutter lifting motor device one. [3] Four-sided grinding machine according to claim 1, characterized byin that the frame comprises a machine base and a movable seat movably mounted on the machine base, and in that a horizontal sliding mechanism is connected between the movable seat and the machine base, wherein the horizontal sliding mechanism comprises at least two horizontally mounted guide rails and a sliding connecting plate mating with the guide rails, wherein the two guide rails are mounted parallel to each other, wherein the movable seat is fixed to two sets of sliding connecting plates and the movable seat can be moved left and right along the guide rails, wherein the movable seat is fixed to the two sets of sliding connecting plates and the movable seat can be adjusted to move left and right along the guide rails;wherein a horizontal motor drive device is provided on the seat, and the horizontal motor drive device includes a horizontal drive motor, a gear, and a screw, and a screw sleeve is provided on the underside of the movable seat, the screw is set parallel to the guide rails, and the screw is driven to rotate by the horizontal drive motor and the gear; wherein said conveying device is adopted in the form of a conveyor belt conveying method.

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