WO2021196642A1

WO2021196642A1 - Intelligent and efficient belt and disc sander for wood finish machining

Info

Publication number: WO2021196642A1
Application number: PCT/CN2020/129600
Authority: WO
Inventors: 廖志浤; 卢义明
Original assignee: 南京捷森城机电有限公司
Priority date: 2020-03-30
Filing date: 2020-11-18
Publication date: 2021-10-07
Also published as: CN111266970A

Abstract

An intelligent and efficient belt and disc sander for wood finish machining. The belt and disc sander consists of a belt sanding assembly and a disc sanding assembly that is used in cooperation with the belt sanding assembly. The belt and disc sander can realize the functions of grinding a belt and grinding a disc, and a monitoring control assembly is increased, thereby intelligently managing and controlling production.

Description

Intelligent high-efficiency belt sanding machine for wood finishing

Technical field

The invention belongs to the technical field of wood processing applications, and specifically relates to an intelligent high-efficiency sanding belt sanding disc machine for wood finishing.

Background technique

In wood finishing operations, it is necessary to carry out efficient, precise and stable grinding and polishing of rough-processed wood materials, which requires the use of sanding belt machines and sanding disc machines.

In the actual grinding and polishing process, according to different needs, it is necessary to use an abrasive belt machine and an abrasive disc machine to complete it. It is necessary to purchase two machines and equipment, which increases the cost of the machine. At the same time, the two machines are on different working surfaces. , That is, the operating platform needs to be replaced back and forth, which reduces the efficiency of wood finishing, grinding, and polishing.

Therefore, based on the above-mentioned problems, the present invention provides an intelligent high-efficiency belt sanding machine for wood finishing.

technical problem

Purpose of the invention: The purpose of the present invention is to provide an intelligent high-efficiency belt sanding machine for wood finishing, which has a reasonable design structure and can realize the functions of a machine with two functions, namely belt grinding and disc grinding, to complete the safety and stability of wood The precision machining and polishing treatment, and the additional monitoring and control components, realize the intelligent control of production operations, and improve the efficient production control of the polishing and polishing treatment.

Technical solutions

Technical Solution: The present invention provides an intelligent high-efficiency sanding belt sanding machine for wood finishing, which is composed of sanding belt components and sanding disk components used in conjunction with the sanding belt components; the sanding belt components include a bottom plate, and Workbench fixing seat, base, spindle support plate, support seat, front dust cover, belt dust chamber, support seat, belt dust chamber cover, gauze wheel frame used in conjunction with the bottom plate, and are respectively set on the bottom plate A set of first feet, a set of second feet, and switch dust cover, switch box fixing plate, switch, wire hook, first screw, sixteenth screw, fifth flat washer set on the bottom plate on four sides , External toothed washers, wire ties, and the second screw, third screw, first flat washer, fourth screw, fourth screw nut, and through the fifth screw, The blowing pipe fixing piece is installed on the snake skin tube on the spindle support plate, the sand belt dust collecting transfer chamber installed on the spindle support plate by the sixth screw and the second flat washer, and the second connecting the spindle support plate and the bracket seat. Seven screws, third flat washers, elastic cylindrical pins, and the motor mounted on the spindle support plate through the first pin, the second pin and the eighth screw, and the motor pulley mounted on the motor through the ninth screw, and The power cords with plugs connected to the switch and the motor respectively, and the tenth screw and the fourth flat washer that fixedly connect the spindle bracket plate and the front dust cover, and are set in the belt dust chamber, support seat, and belt dust collection The eleventh screw, the eleventh screw nut, the twelfth screw, the first fixing seat, the thirteenth screw, the second fixing seat, and the first deep groove ball used in the connecting surface of the chamber cover and the gauze wheel frame Bearing, fourteenth screw, belt roller, main roller shaft butterfly screw, large washer, second deep groove ball bearing, rotating fixing seat, fifteenth screw, elastic retaining ring for shaft, hexagon socket set screw , Driving shaft pulley, auxiliary flat washer, auxiliary pan head screw, pulley guard, and the V-shaped triangle belt connected to the driving shaft pulley and motor pulley at both ends, and the seventeenth fixed connection between the support seat and the gauze wheel frame Screws, sixth flat washer, eighteenth screw, seventh flat washer, and used in conjunction with the belt drum, eighteenth screw, positioning ring, rubber shock-absorbing sleeve, auxiliary shaft Retaining ring, belt drum shaft, first non-metallic insert lock nut, driven wheel bracket, first compression spring, adjusting bolt, adjusting nut, second non-metallic insert lock nut, second compression spring, hexagon Head bolts, tension levers, and the abrasive belts connected to the abrasive belt drum and the abrasive belt drum at both ends; the sand disc assembly includes a fixed seat, a base, a spindle bracket plate, and a connecting surface of the bracket seat. One side of the grinding wheel cover, the eighteenth screw, the eighth flat washer, the nineteenth screw, the fan, the twentieth screw, the ninth flat washer, the chip guide, and the twenty-first screw used in conjunction with the driving shaft pulley , Chip guide cover, twenty-second screw, wheel, disc emery cloth, wheel side cover, twenty-third screw, workbench, left workbench pivot block, ninth flat washer, twenty-fifth screw, work Stand, tenth flat washer, twenty-sixth screw, locking handle, eleventh flat washer, second Seventeen screws, twelfth flat washers, pointers, angle plates, workbench support rods, right workbench pivot block, hexagon nuts, and hexagon head bolts.

According to the technical scheme, the intelligent high-efficiency abrasive belt sander for wood finishing further comprises a sponge strip arranged on the connecting surface of the main shaft support plate and the dust collecting transfer chamber of the abrasive belt.

According to the technical solution, the intelligent high-efficiency abrasive belt sanding machine for wood finishing further includes a handle, a cross recessed pan head screw, and a first auxiliary flat washer that are arranged on one side of the worktable and used in conjunction with it. , Auxiliary pointer, index plate, index positioning rod, second auxiliary flat washer.

According to the technical scheme, the intelligent high-efficiency abrasive belt sanding disc machine for wood finishing also includes a side of the fixed seat of the workbench and is connected to the front dust cover, the sanding belt dust chamber, the support seat, and the sanding belt. Dust bag, joint bolt, wrench, pin, dust bag holder, hexagonal nut, self-tapping screw, dust outlet pipe used in conjunction with the dust chamber cover.

According to the technical scheme, the intelligent high-efficiency abrasive belt sanding machine used for wood finishing also includes a stand for use in conjunction with a bottom plate, a workbench fixing seat, a set of first feet, and a set of second feet. Type support assembly, the vertical support assembly includes a set of first vertical support plates, a set of second vertical support plates, and a set of first vertical support plates and a set of second vertical support plates. A set of first rubber pads, a set of second rubber pads, and a set of first inclined reinforcing plates and a set of second inclined reinforcing plates respectively connected to a set of first vertical support plates and a set of second vertical support plates, and A set of first horizontal support plates and a set of second horizontal support plates are respectively arranged at the other end of the first vertical support plate and a set of second vertical support plates. Among them, the workbench fixing seat and a set of second horizontal support plates are It is fixedly connected by two sets of vertical positioning bolts, two sets of vertical positioning bolt washers, two sets of vertical positioning bolts and nuts. Two sets of horizontal positioning bolts, two sets of auxiliary positioning bolt washers, and two sets of horizontal positioning bolts and nuts are passed between the second inclined reinforcing plate.

According to the technical solution, the intelligent high-efficiency abrasive belt sanding machine for wood finishing further includes monitoring and control components used in conjunction with the sanding belt components and the sanding disk components. The monitoring control components include The first rotational speed sensor and the second rotational speed sensor in the drum and the belt drum, and the handheld modules used in conjunction with the first rotational speed sensor and the second rotational speed sensor respectively, and the first rotational speed sensor and the second rotational speed sensor respectively. The module consists of a handheld shell, a single-chip microcomputer, a touch LCD display, a data transceiver unit, an early warning unit, and a voice playback unit, including the touch LCD display, data transceiver unit, early warning unit, voice playback unit, first speed sensor, and second speed sensor , The motors are respectively connected with the single-chip microcomputer.

Beneficial effect

Compared with the prior art, the intelligent high-efficiency belt sanding machine for wood finishing of the present invention has the beneficial effects that: its design structure is reasonable, and it can realize the functions of one machine and two purposes, namely belt grinding and disc grinding, Complete the safe and stable finishing and polishing of wood. At the same time, the monitoring and control components are added to realize intelligent management and control of production operations and improve the efficient production control of polishing and polishing.

Description of the drawings

Figures 1 and 2 are schematic diagrams of the explosive structure of the intelligent high-efficiency abrasive belt sander for wood finishing of the present invention;

Fig. 3 is a schematic diagram of the assembled vertical part of the intelligent high-efficiency abrasive belt sanding disc machine for wood finishing of the present invention;

Fig. 4 is a schematic structural diagram of the vertical support assembly of the intelligent high-efficiency abrasive belt sanding disc machine for wood finishing of the present invention.

Embodiments of the present invention

The present invention will be further clarified below in conjunction with the drawings and specific embodiments.

Example

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, the intelligent high-efficiency sanding belt sanding machine for wood finishing is composed of sanding belt components and sanding disk components used in conjunction with the sanding belt components; The abrasive belt assembly includes a bottom plate 104, and a workbench fixing seat 102, a base 98, a spindle support plate 50, a support seat 48, a front dust cover 38, an abrasive belt dust chamber 35, and a support seat used in conjunction with the bottom plate 104 34. Abrasive belt dust chamber cover 33, gauze wheel frame 16, and a set of first feet 99, a set of second feet 105 respectively arranged on the four sides of the bottom plate 104, and a switch dust cover set on the bottom plate 104 106. Switch box fixing plate 107, switch 108, wire hook 109, first screw 110, sixteenth screw 114, fifth flat washer 113, external toothed washer 112, wire buckle 111, and fixing the bottom plate 104 and the workbench The second screw 103, the third screw 101, the first flat washer 100, the fourth screw 21, the fourth screw nut 22, and the fifth screw 59 and the blow pipe fixing piece 58 are installed on the main shaft through the seat 102 and the base 98. The snakeskin tube 57 on the bracket plate 50, the abrasive belt dust collecting transfer chamber 60 installed on the spindle bracket plate 50 through the sixth screw 62 and the second flat washer 61, and the connecting spindle bracket plate 50 and the bracket seat 48 The seventh screw 56, the third flat washer 55, the elastic cylindrical pin 49, and the motor 129 installed on the spindle support plate 50 through the first pin 127, the second pin 130, and the eighth screw 128, and the ninth screw 131 The motor pulley 132 installed on the motor 129, and the plug power cord 115 connected to the switch 108 and the motor 129 respectively, and the tenth screw 36 and the fourth flat connecting the spindle bracket plate 50 and the front dust cover 38 The washer 37, and the eleventh screw 21, the eleventh screw nut 22, and the eleventh screw 21, the eleventh screw nut 22, and the eleventh screw 21, the eleventh screw nut 22, which are arranged in the connecting surface of the abrasive belt dust chamber 35, the support seat 34, the abrasive belt dust chamber cover 33, and the gauze wheel frame 16 Twelfth screw 23, first fixing seat 24, thirteenth screw 25, second fixing seat 26, first deep groove ball bearing 27, fourteenth screw 28, belt drum 29, main drum shaft 30, butterfly Screw 31, large washer 32, second deep groove ball bearing 41, rotary fixing seat 42, fifteenth screw 43, shaft retaining ring 63, hexagon socket set screw 64, driving shaft pulley 65, auxiliary flat washer 124. Auxiliary pan-head screw 125, pulley guard 126, and V-shaped V-belt 133 connected to the driving shaft pulley 65 and motor pulley 132 at both ends, and the seventeenth fixed connection between the support seat 34 and the gauze wheel frame 16 The screw 17, the sixth flat washer 18, the eighteenth screw 19, the seventh flat washer 20, and the cooperating slave belt drum 1, the eighteenth screw 2, the positioning ring 3, which are arranged at one end of the gauze wheel frame 16 Rubber damping sleeve 4, elastic retaining ring for auxiliary shaft 5, belt drum shaft 6, first non-metallic insert lock nut 7, driven wheel bracket 8, first compression spring 9, adjusting bolt 10, adjusting screw The female 11, the second non-metallic insert lock nut 12, the second compression spring 13, the hexagonal head bolt 14, the tension lever 15, and the abrasive belt connected to the abrasive belt drum 1 and the abrasive belt drum 29 at both ends respectively 143; The sand disc assembly includes a grinding wheel cover 66 and an eighteenth screw that are set on the workbench fixing seat 102, the base 98, the spindle support plate 50, and the side of the connecting surface of the support seat 48 and used in conjunction with the driving shaft pulley 65 67, eighth flat washer 68, nineteenth screw 69, fan 70, twentieth screw 71, ninth flat washer 72, chip guide 73, twenty-first screw 74, chip guide cover 75, twentieth Two screws 76, wheel 77, disc emery cloth 78, grinding wheel side cover 79, twenty-third screw 80, worktable 81, left worktable pivot block 82, ninth flat washer 83, twenty-fifth screw 84, work Table bracket 85, tenth flat washer 86, twenty-sixth screw 87, locking handle 88, eleventh flat washer 89, twenty-seventh screw 90, twelfth flat washer 91, pointer 92, angle plate 93, Workbench support rod 94, right workbench pivot block 95, hexagon nut 141, and hexagon head bolt 142.

Further preferably, in this technical solution, the intelligent high-efficiency abrasive belt sanding machine for wood finishing further includes a sponge strip 54 arranged on the connecting surface of the spindle support plate 50 and the abrasive belt dust collecting transfer chamber 60, and For sealing, preventing air leakage (soft sponge), blocking the sand belt dust collection transfer chamber; and the intelligent high-efficiency sand belt sanding machine used for wood finishing, also includes a side set on the workbench 81 and with The handle 134, the cross recessed pan head screw 135, the first auxiliary flat washer 136, the auxiliary pointer 137, the index plate 138, the index positioning rod 139, and the second auxiliary flat washer 140 used in conjunction; The processed intelligent high-efficiency abrasive belt sanding disc machine also includes the front dust cover 38, the sanding belt dust chamber 35, the support seat 34, and the sanding belt dust chamber cover 33, which are arranged on the side of the workbench fixed seat 102. The dust bag 123, the joint bolt 122, the wrench 121, the pin 120, the dust bag holder 119, the hexagon nut 118, the self-tapping screw 117, the dust pipe 116; and the intelligent type used for wood finishing The high-efficiency abrasive belt sanding disc machine also includes a vertical support assembly used in conjunction with the bottom plate 104, the workbench fixing seat 102, a set of first feet 99, and a set of second feet 105. The vertical support assembly, It includes a group of first vertical support plates 144, a group of second vertical support plates 149, and a group of first rubber pads 147, which are respectively arranged at one end of a group of first vertical support plates 144 and a group of second vertical support plates 149, A set of second rubber pads 150, and a set of first inclined reinforcing plates 148, a set of second inclined reinforcing plates 154 connected to a set of first vertical support plates 144 and a set of second vertical support plates 149, and respectively A set of first horizontal support plates 152 and a set of second horizontal support plates 155 are arranged at the other end of the first vertical support plate 144, a set of second vertical support plates 149, wherein the workbench fixing seat 102 is connected to a set of second The horizontal support plates 155 are fixedly connected by two sets of vertical positioning bolts 157, two sets of vertical positioning bolt washers 151, two sets of vertical positioning bolts and nuts 153, a set of first vertical support plates 144, a set of second vertical support plates 149, A set of first inclined reinforcing plates 148 and a set of second inclined reinforcing plates 154 pass through two sets of horizontal positioning bolts 145, two sets of auxiliary positioning bolt washers 156, and two sets of horizontal positioning bolt nuts 146; The processed intelligent high-efficiency abrasive belt sanding disc machine also includes monitoring and control components used in conjunction with the abrasive belt components and the abrasive disk components. The monitoring control components include the first The rotational speed sensor 158, the second rotational speed sensor 159, and the hand-held modules used in conjunction with the first rotational speed sensor 158, the second rotational speed sensor 159, and the first rotational speed sensor 158 and the second rotational speed sensor 159 respectively. It consists of a housing, a single-chip microcomputer, a touch LCD display, a data transceiver unit, an early warning unit, and a voice playback unit. The touch LCD display, data transceiver unit, early warning unit, voice playback unit, and first speed transmission The sensor 158, the second rotational speed sensor 159, and the motor 129 are respectively connected to the single-chip microcomputer.

The intelligent high-efficiency belt sanding machine used for wood finishing of this structure has a reasonable design structure and can realize the functions of one machine, namely belt grinding and disc grinding, to complete the safe and stable finishing grinding and polishing of wood At the same time, the monitoring and control components are added to realize intelligent management and control of production operations, and improve the efficient production control of grinding and polishing treatment.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements can be made, and these improvements should also be regarded as the present invention. The scope of protection.

Claims

The intelligent high-efficiency sanding belt sanding machine for wood finishing is characterized in that it is composed of sanding belt components and sanding disk components used in conjunction with the sanding belt components; the sanding belt components include a bottom plate (104), And the workbench fixing seat (102), base (98), spindle bracket plate (50), bracket seat (48), front dust cover (38), sand belt dust chamber ( 35), the support seat (34), the belt dust chamber cover (33), the gauze wheel frame (16), and a set of first feet (99) and a set of second feet respectively arranged on the four sides of the bottom plate (104) The foot base (105), the switch dust cover (106), the switch box fixing plate (107), the switch (108), the wire hook (109), the first screw (110), and the switch dust cover (106) set on the bottom plate (104) Sixteen screws (114), fifth flat washer (113), external toothed washer (112), wire buckle (111), and the bottom plate (104), table fixing seat (102), and base (98) are fixedly assembled The second screw (103), the third screw (101), the first flat washer (100), the fourth screw (21), the fourth screw nut (22), and the fifth screw (59) and the blower pipe fixed The sheet (58) is installed on the snake skin tube (57) on the spindle support plate (50), and the abrasive belt set is installed on the spindle support plate (50) through the sixth screw (62) and the second flat washer (61). The dust transfer chamber (60), and the seventh screw (56), the third flat washer (55), the elastic cylindrical pin (49), and the first pin connecting the spindle bracket plate (50) and the bracket seat (48) The shaft (127), the second pin (130), the eighth screw (128) are mounted on the motor (129) on the spindle support plate (50), and the motor (129) is mounted on the motor (129) by the ninth screw (131) Motor pulley (132), power cord with plug (115) connected to switch (108) and motor (129) respectively, and tenth screw for fixing the spindle bracket plate (50) and front dust cover (38) (36), the fourth flat washer (37), and is set in the connecting surface of the belt dust chamber (35), support seat (34), belt dust chamber cover (33), gauze wheel frame (16) and The eleventh screw (21), the eleventh screw nut (22), the twelfth screw (23), the first fixing seat (24), the thirteenth screw (25), the second fixing seat ( 26), the first deep groove ball bearing (27), the fourteenth screw (28), the abrasive belt drum (29), the main drum shaft (30), the butterfly screw (31), the large washer (32), the second Deep groove ball bearing (41), rotating fixing seat (42), fifteenth screw (43), elastic retaining ring for shaft (63), hexagon socket set screw (64), driving shaft pulley (65), Auxiliary flat washer (124), auxiliary pan head screw (125), pulley guard (126), and the two ends are respectively connected to the driving shaft pulley (65), motor pulley (13) 2) The connected V-belt (133), and the seventeenth screw (17), the sixth flat washer (18), and the eighteenth screw ( 19), the seventh flat washer (20), and the cooperating abrasive belt drum (1), the eighteenth screw (2), the positioning ring (3), and the rubber reduction Vibration sleeve (4), elastic retaining ring for auxiliary shaft (5), belt drum shaft (6), first non-metallic insert lock nut (7), driven wheel bracket (8), first compression spring (9) ), adjusting bolt (10), adjusting nut (11), second non-metallic insert lock nut (12), second compression spring (13), hexagon head bolt (14), tension lever (15), And the abrasive belt (143) connected to the abrasive belt drum (1) and the abrasive belt drum (29) at both ends; the abrasive disc assembly includes a fixed seat (102), a base (98) and a spindle The grinding wheel cover (66), the eighteenth screw (67), the eighth flat washer (68), the eighteenth screw (67), the eighteenth screw (67), the eighteenth screw (67), the grinding wheel cover (66), the eighteenth screw (67), the eighth flat washer (68), the support plate (50), the connecting surface of the support seat (48) and the grinding wheel cover (66) used in conjunction with the driving shaft pulley (65) Nineteen screw (69), fan (70), twentieth screw (71), ninth flat washer (72), chip guide (73), twenty-first screw (74), chip guide cover (75) ), the twenty-second screw (76), the wheel (77), the emery cloth (78), the side cover of the grinding wheel (79), the twenty-third screw (80), the workbench (81), the pivot of the left workbench Block (82), ninth flat washer (83), twenty-fifth screw (84), workbench support (85), tenth flat washer (86), twenty-sixth screw (87), locking handle ( 88), eleventh flat washer (89), twenty-seventh screw (90), twelfth flat washer (91), pointer (92), angle plate (93), workbench support rod (94), right Workbench pivot block (95), hexagon nut (141), hexagon head bolt (142).
The intelligent high-efficiency abrasive belt sanding machine for wood finishing according to claim 1, characterized in that: the intelligent high-efficiency abrasive belt sanding machine for wood finishing further comprises a main shaft support plate (50) Sponge strip (54) on the connecting surface with the dust collecting transfer chamber (60) of the abrasive belt.
The intelligent high-efficiency abrasive belt sanding machine for wood finishing according to claim 1 or 2, characterized in that: the intelligent high-efficiency abrasive belt sanding machine for wood finishing further includes The upper side of the table (81) is matched with the handle (134), cross recessed pan head screw (135), first auxiliary flat washer (136), auxiliary pointer (137), index plate (138), minute Degree positioning rod (139), second auxiliary flat washer (140).
The intelligent high-efficiency abrasive belt sanding machine for wood finishing according to claim 3, characterized in that: the intelligent high-efficiency abrasive belt sanding machine for wood finishing further comprises: Dust bag (123) used in conjunction with the front dust cover (38), belt dust chamber (35), support seat (34), and belt dust chamber cover (33) on the side of the seat (102) , Swivel bolt (122), wrench (121), pin (120), dust bag sleeve (119), hexagon nut (118), self-tapping screw (117), dust tube (116).
The intelligent high-efficiency abrasive belt sanding machine for wood finishing according to claim 4, characterized in that: the intelligent high-efficiency abrasive belt sanding machine for wood finishing further comprises a bottom plate (104) , Workbench fixing seat (102), a set of first feet (99), and a set of second feet (105) are used in conjunction with a vertical support assembly. The vertical support assembly includes a set of first vertical The supporting plate (144), a group of second vertical supporting plates (149), and a group of first rubber pads respectively arranged at one end of a group of first vertical supporting plates (144) and a group of second vertical supporting plates (149) (147), a set of second rubber pads (150), and a set of first diagonal reinforcement plates (148) respectively connected with a set of first vertical support plates (144) and a set of second vertical support plates (149) , A set of second diagonal reinforcement plates (154), and a set of first horizontal support plates (152) respectively arranged at the other end of the first vertical support plate (144), a set of second vertical support plates (149), a Set of second horizontal support plates (155), in which two sets of vertical positioning bolts (157) and two sets of vertical positioning bolt washers (151) are passed between the workbench fixing seat (102) and a set of second horizontal support plates (155). ), two sets of vertical positioning bolts and nuts (153) are fixedly connected, a set of first vertical support plates (144), a set of second vertical support plates (149), a set of first inclined reinforcement plates (148), and a set of Two sets of horizontal positioning bolts (145), two sets of auxiliary positioning bolt washers (156), and two sets of horizontal positioning bolt nuts (146) are passed between the two inclined reinforcing plates (154).
The intelligent high-efficiency abrasive belt sanding machine for wood finishing according to claim 5, characterized in that: the intelligent high-efficiency abrasive belt sanding machine for wood finishing further comprises an abrasive belt assembly, The monitoring control component used in conjunction with the sanding disc component. The monitoring control component includes a first speed sensor (158) and a second speed sensor (159) respectively arranged in the slave belt drum (1) and the sand belt drum (29), And the handheld modules used in conjunction with the first rotational speed sensor (158), the second rotational speed sensor (159), and the first rotational speed sensor (158) and the second rotational speed sensor (159) respectively. The handheld module consists of a handheld shell, The single-chip microcomputer, touch LCD display, data transceiver unit, early warning unit and voice playback unit, including touch LCD display, data transceiver unit, early warning unit, voice playback unit, first speed sensor (158), second speed sensor (159 ) And the motor (129) are respectively connected with the single-chip microcomputer.