Portable automatic squeeze riveter for harmonica reed installation

Abstract

The utility model discloses a portable automatic squeeze riveter for installing harmonica reeds, which belongs to the technical field of squeeze riveting equipment and comprises a shell, a main body frame, a pressure sensor, an upper pressing die, a lower pressing die, a rotary encoder, an electric control module, a stepping motor and a cam. The lower end of the main body frame is fixedly connected with the lower end of the shell, the head extends out of the upper end of the shell, the head of the main body frame is provided with a cantilever far away from one end of the shell, the pressure sensor is fixedly connected below the cantilever of the main body frame, the upper end of the upper pressing die is fixedly connected with the pressure sensor, and the lower end of the upper pressing die corresponds to the upper end of the lower pressing die. The lower end of the lower pressing die is installed in the shell, the bottom of the lower pressing die is connected with the outer contour of the cam, a center hole of the cam is fixedly connected with the stepping motor, the electric control module is electrically connected with the pressure sensor, the rotary encoder and the stepping motor, the riveting driving structure of the cam structure is simple and easy to manufacture and assemble, and cost and maintenance complexity are reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of the riveting equipment, more specifically, it relates to a portable automatic riveting machine for harmonica spring plate installation. BACKGROUND

[0002] The harmonica is a kind of precise and small musical instrument, but its maintenance has great difficulty, so in various competition processes, if the harmonica that oneself is familiar with appears the problem, it is difficult to maintain, and the operation difficulty of manually installing the spring plate is great, and the riveting equipment is usually integrated with the workbench, so it is not easy to carry to the scene for use, therefore, a portable automatic riveting machine with simple structure, easy to carry, easy to maintain and high efficiency is required. UTILITY MODEL CONTENTS

[0003] The utility model wants to solve the technical problem to provide a portable automatic riveting machine for harmonica spring plate installation, it can realize the demand of satisfying the riveting machine simple structure, easy to carry, easy to maintain and high efficiency.

[0004] The utility model relates to a portable automatic riveting machine for harmonica spring plate installation, including shell, main body frame, pressure sensor, upper pressing mould, lower pressing mould, rotary encoder, electric control module, stepping motor and cam, the main body frame is installed in the shell, and the lower end of main body frame is fixedly connected with the lower end of shell, and the head is stretched out the upper end of shell, the head of main body frame is equipped with the cantilever of the end away from the shell, the pressure sensor is fixedly connected under the cantilever of main body frame, the upper end of upper pressing mould is fixedly connected with pressure sensor, and the lower end corresponds with the upper end of lower pressing mould, the lower end of lower pressing mould is installed in the shell, and the bottom of lower pressing mould is connected with the outer contour of cam, the central hole of cam is fixedly connected with stepping motor, and electric control module is electrically connected with pressure sensor, rotary encoder and stepping motor respectively, and the riveting drive structure of cam structure is simple, easy to manufacture and assemble, reduces production cost and maintenance complexity.

[0005] As a further improvement of the utility model, the lower pressing die comprises an extrusion column, a pre-pressing sleeve, a sliding sleeve, a driving seat, a pair of return springs and a sliding bearing, the extrusion column is sleeved in the pre-pressing sleeve and is in sliding connection with the pre-pressing sleeve, the pre-pressing sleeve is sleeved in the sliding sleeve and the pre-pressing sleeve is in sliding connection with the sliding sleeve, the bottom of the pre-pressing sleeve is provided with an annular baffle matched with the inner diameter of the sliding sleeve, so that the connection between the pre-pressing sleeve and the sliding sleeve is prevented from being disconnected during sliding, the bottom of the sliding sleeve is clamped with the driving seat through the clamping teeth, the lower end of the driving seat is in sliding connection with the cam profile, the top of the driving seat is provided with a jacking column with a recess, the lower end of the extrusion column is inserted into the recess and the bottom of the extrusion column is attached to the recess surface of the jacking column, when the driving seat rises, the extrusion column is extended out of the pre-pressing sleeve by following the jacking force of the jacking column, the pre-pressing sleeve provides positioning for the extrusion column when the pre-pressing sleeve abuts against the spring sheet, the rivet and the spring plate, the maintenance efficiency of the harmonica is improved, the inner ring of the sliding bearing is sleeved on the sliding sleeve and the outer ring is installed in the main body frame, one return spring is sleeved on the outer ring of the sliding sleeve and is located below the sliding bearing, the sliding of the sliding bearing and the sliding sleeve is provided with a return function, one return spring is sleeved on the outer ring of the jacking column and is located below the pre-pressing sleeve, the sliding of the pre-pressing sleeve and the sliding sleeve is provided with a return function, the cam profile exerts vertical force and horizontal force on the driving seat by sliding at the bottom of the driving seat, the pre-pressing sleeve receives the pressure transmitted by the driving seat through the sliding sleeve, the horizontal force received by the pre-pressing sleeve is reduced, so that the positioning accuracy of the pre-pressing sleeve is ensured and the service life of the lower pressing die is improved.

[0006] As a further improvement of the utility model, the shell comprises a shell body, the shell side is provided with a mainboard interface, a power socket and a control socket, the shell surface close to the main body frame is provided with a display screen, the mainboard interface, the power socket, the control socket and the display screen are all in electrical connection with the electric control module, so as to complete the connection between the electric control module and the outside, realize the functions of programming, power supply, control and display data of the electric control module, the mainboard interface can be externally connected with a computer, so as to complete the editing of the programmable mainboard 72, the power socket can be externally connected with a power supply, so as to supply power for the portable automatic rivet pressing machine, the control socket can be externally connected with a controller, so as to control the upward extrusion of the lower pressing die.

[0007] As a further improvement of the utility model, the electric control module comprises a pressure sensor encoding plate, a programmable mainboard and a voltage conversion plate, the pressure sensor encoding plate is in electrical connection with the pressure sensor, monitors the change of the pressure received by the pressure sensor and transmits, so as to facilitate the user to timely adjust the extrusion force of the portable automatic rivet pressing machine, the programmable mainboard is in electrical connection with the mainboard interface, an external computer can program the programmable mainboard by connecting with the mainboard interface, the voltage conversion plate is in electrical connection with the power socket and the stepping motor respectively, adjusts the voltage of the external power supply and protects the circuit of the portable automatic rivet pressing machine.

[0008] As a further improvement of the utility model, the electric control module further comprises a motor drive board, the motor drive board is connected to the pin of the stepping motor, controls the speed of the stepping motor, provides greater torque for the output of the stepping motor, thereby provides greater extrusion force for the lower pressing die, so as to meet the extrusion force required when the portable automatic rivet press works.

[0009] As a further improvement of the utility model, the further comprises a roller, the lower end of the driving seat is provided with a groove, the roller is installed in the groove and is in sliding connection with the driving seat and the cam respectively, the friction between the driving seat and the cam is eliminated, high fatigue resistance is provided, so as to adapt to long-term operation, and the frequency of replacing parts is reduced.

[0010] Compared with the prior art, the utility model has the beneficial effects that: the riveting driving structure of the cam structure is simple, easy to carry and maintain; the variable voltage plate controls the speed of the stepping motor, provides greater torque for the output of the stepping motor, thereby provides greater extrusion force for the lower pressing die, improves the rivet pressing efficiency; the programmable mainboard is adopted, and diversified control modes are provided; the roller is arranged between the driving seat and the cam, the friction between the driving seat and the cam is eliminated, high fatigue resistance is provided, so as to adapt to long-term operation, and the frequency of replacing parts is reduced; a plurality of working modes are selected, the automatic mode is extruded to the specified pressure automatically according to the programming setting, and the manual mode controls the upward extrusion of the lower pressing die through the controller connected to the control socket; the extrusion column is extruded from the inside of the pre-pressing sleeve to press rivets, the pre-pressing sleeve provides positioning for the extrusion column when the pre-pressing sleeve abuts against the spring sheet, the rivet and the spring plate, and the harmonica maintenance efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a structural schematic view of the utility model;

[0012] Figure 2 It is an explosion structural schematic view of the utility model;

[0013] Figure 3 It is an explosion structural schematic view of the main body frame, the pressing die and the stepping motor of the utility model;

[0014] Figure 4 It is an explosion structural schematic view of the shell and the electric control module of the utility model;

[0015] Figure 5 It is an explosion structural schematic view of the lower pressing die of the utility model;

[0016] Figure 6 It is a structural section view of the lower pressing die of the utility model;

[0017] Figure 7 It is a structural section view of the utility model;

[0018] Figure 8The utility model discloses an electric control module structure schematic view.

[0019] Mark explanation in drawing:

[0020] Housing 1, shell 11, mainboard interface 12, power socket 13, control socket 14, display screen 15, main body frame 2, pressure sensor 3, upper pressing die 4, lower pressing die 5, extrusion column 51, pre-pressing sleeve 52, sliding sleeve 53, drive seat 54, top column 541, reset spring 55, sliding bearing 56, roller 57, rotary encoder 6, electric control module 7, pressure sensor encoding board 71, programmable mainboard 72, voltage transformation board 73, motor drive board 74, stepping motor 8, cam 9. Specific embodiment

[0021] Specific embodiment one: please refer to Figures 1-8 The utility model relates to a kind of portable automatic riveting machine for harmonica spring piece installation, including housing 1, main body frame 2, pressure sensor 3, upper pressing die 4, lower pressing die 5, rotary encoder 6, electric control module 7, stepping motor 8 and cam 9, main body frame 2 is installed in housing 1, and the lower end of main body frame 2 and the lower end of housing 1 are fixedly connected, head is projected in the upper end of housing 1, and the head of main body frame 2 is equipped with cantilever away from one end of housing 1, pressure sensor 3 is fixedly connected below the cantilever of main body frame 2, and the upper end of upper pressing die 4 is fixedly connected with pressure sensor 3, and the lower end corresponds with the upper end of lower pressing die 5, and lower pressing die 5 lower end is installed in housing 1 and lower pressing die 5 bottom and the outer contour of cam 9 are connected, and the center hole of cam 9 is fixedly connected with stepping motor 8, and electric control module 7 is electrically connected with pressure sensor 3, rotary encoder 6 and stepping motor 8 respectively, and riveting drive structure of cam 9 structure is simple, easy to manufacture and assemble, reduce production cost and maintenance complexity.

[0022] Further embodiment, such as Figures 5-6As shown, the lower die 5 includes an extrusion column 51, a pre-press sleeve 52, a sliding sleeve 53, a drive seat 54, a pair of return springs 55 and a sliding bearing 56, the extrusion column 51 is sleeved in the pre-press sleeve 52 and is in sliding connection with the pre-press sleeve 52, the pre-press sleeve 52 is sleeved in the sliding sleeve 53 and the pre-press sleeve 52 is in sliding connection with the sliding sleeve 53, the bottom of the pre-press sleeve 52 is provided with an annular baffle matching the inner diameter of the sliding sleeve 53 to prevent the connection between the pre-press sleeve 52 and the sliding sleeve 53 from being disconnected during sliding, the bottom of the sliding sleeve 53 is clamped with the drive seat 54 through the clamping teeth, the lower end of the drive seat 54 is in sliding connection with the profile surface of the cam 9, the upper end of the drive seat 54 is provided with a top column 541 with a recess, the lower end of the extrusion column 51 is inserted into the recess and the bottom of the extrusion column 51 is in close contact with the recess surface of the top column 541, when the drive seat 54 rises, the extrusion column 51 is forced to extend out of the pre-press sleeve 52 by the top force of the top column 541, the pre-press sleeve 52 provides positioning for the extrusion column 51 when it contacts the spring sheet, rivet and spring plate, the inner ring of the sliding bearing 56 is sleeved on the sliding sleeve 53 and the outer ring is installed in the main body frame 2, one return spring 55 is sleeved on the outer ring of the sliding sleeve 53 and is located below the sliding bearing 56 to provide a return function for the sliding of the sliding bearing 56 and the sliding sleeve 53, one return spring 55 is sleeved on the outer ring of the top column 541 and is located below the pre-press sleeve 52 to provide a return function for the sliding of the pre-press sleeve 52 and the sliding sleeve 53, the profile surface of the cam 9 slides on the bottom of the drive seat 54 to exert vertical force and horizontal force on the drive seat 54, the pre-press sleeve 52 receives the pressure transmitted by the drive seat 54 through the sliding sleeve 53 to reduce the horizontal force on the pre-press sleeve 52, thereby ensuring the positioning accuracy of the pre-press sleeve and improving the service life of the lower die 5.

[0023] Further, as shown in the embodiment, Figure 4 The shell 1 includes a shell body 11, the shell 1 is provided with a mainboard interface 12, a power socket 13 and a control socket 14 on the side surface, a display screen 15 is arranged on the shell surface close to the main body frame 2, the mainboard interface 12, the power socket 13, the control socket 14 and the display screen 15 are electrically connected with the electric control module 7 to complete the connection between the electric control module 7 and the outside, and realize the functions of programming, power supply, control and display data of the electric control module 7.

[0024] Further, as shown in the embodiment, Figure 8 The electric control module 7 includes a pressure sensor encoding board 71, a programmable mainboard 72 and a voltage conversion board 73, the pressure sensor encoding board 71 is electrically connected with the pressure sensor 3 to monitor the change of the pressure on the pressure sensor 3 and transmit, so as to facilitate the user to adjust the extrusion force of the portable automatic rivet pressing machine in time, the programmable mainboard 72 is electrically connected with the mainboard interface 12, an external computer can program the programmable mainboard 72 by connecting with the mainboard interface 12, the voltage conversion board 73 is electrically connected with the power socket 13 and the stepping motor 8 respectively to adjust the voltage of the external power supply and protect the circuit of the portable automatic rivet pressing machine.

[0025] Further embodiments, as shown in Figure 8 Further embodiments, as shown in

[0026] Further embodiments, as shown in Figure 6 Further embodiments, as shown in

[0027] In use, the rivet is passed through the reed and the bridge of the harmonica, the part to be riveted is aligned and placed between the upper die 4 and the lower die 5, the stepper motor 8 is started, the stepper motor 8 drives the cam 9 to rotate, causing the lower die 5 to move up and down, when the lower die 5 rises, the pre-pressing sleeve 52 contacts the combination of the reed, the rivet and the bridge to provide a pre-pressing force, then the lower die 5 continues to rise, the pre-pressing sleeve 52 is stressed to compress the return spring 55, the pre-pressing sleeve 52 is fixed in position, the extrusion column 51 extends from the pre-pressing sleeve 52 and provides pressure to the reed, the rivet and the bridge, causing the three to be riveted together due to the extrusion deformation of the rivet, completing the riveting action, the cam 9 continues to rotate, the lower die 5 descends, completing the riveting process.

Claims

1. A portable automatic riveter for installation of a harmonica reed, characterized by: The utility model relates to a kind of automatic injection device, including shell (1), main frame (2), pressure sensor (3), upper die (4), lower die (5), rotary encoder (6), electric control module (7), stepper motor (8) and cam (9), main frame (2) is installed in shell (1), and the lower end of main frame (2) and the lower end of shell (1) are fixedly connected, and head is protruding the upper end of shell (1), and the head of main frame (2) is equipped with cantilever away from the end of shell (1), and pressure sensor (3) is fixedly connected below the cantilever of main frame (2), and the upper end of upper die (4) is fixedly connected with pressure sensor (3), and the lower end is corresponding with the upper end of lower die (5), and the lower end of lower die (5) is installed in shell (1), and the bottom of lower die (5) is connected with the outer contour of cam (9), and the center hole of cam (9) is fixedly connected with stepper motor (8), and electric control module (7) is electrically connected with pressure sensor (3), rotary encoder (6) and stepper motor (8) respectively.

2. A portable automatic riveter for mounting of a harmonica reed according to claim 1, characterized in that: Lower die (5) includes extrusion column (51), pre-pressing sleeve (52), sliding sleeve (53), drive seat (54), a pair of reset spring (55) and sliding bearing (56), extrusion column (51) is sleeved in pre-pressing sleeve (52) and is slidably connected with pre-pressing sleeve (52), pre-pressing sleeve (52) is sleeved in sliding sleeve (53), and pre-pressing sleeve (52) is slidably connected with sliding sleeve (53), and the bottom of sliding sleeve (53) is engaged with drive seat (54) by pawl, and the lower end of drive seat (54) is connected with cam (9), and the upper end of drive seat (54) is equipped with top post (541) with recess in the center, and the lower end of extrusion column (51) is inserted into recess, and the bottom of extrusion column (51) is attached with the recess hole face of top post (541), when drive seat (54) rises, so that extrusion column (51) is followed by top force of top post (541) and thus extends pre-pressing sleeve (52), sliding bearing (56) is sleeved on sliding sleeve (53), one reset spring (55) is sleeved on the outer ring of sliding sleeve (53) and is below sliding bearing (56), and one reset spring (55) is sleeved on the outer ring of top post (541) and is below pre-pressing sleeve (52).

3. A portable automatic riveter for mounting of a harmonica reed according to claim 1, characterized in that: Shell (1) side is equipped with mainboard interface (12), power socket (13) and control socket (14), and the shell surface of shell (1) close to main frame (2) is equipped with display screen (15), and mainboard interface (12), power socket (13), control socket (14) and display screen (15) are electrically connected with electric control module (7), to complete electric control module (7) and external connection, realize the function of programming, power supply, control and display data to electric control module (7).

4. A portable automatic riveter for mounting of a harmonica reed according to claim 3, characterized in that: Electric control module (7) includes pressure sensor encoding board (71), programmable mainboard (72) and transformer board (73), and pressure sensor encoding board (71) is electrically connected with pressure sensor (3), monitors the change of pressure that pressure sensor (3) suffers and transmits, and programmable mainboard (72) is electrically connected with mainboard interface (12), and transformer board (73) is electrically connected with power socket (13) and stepper motor (8) respectively.

5. A portable automatic riveter for mounting of a harmonica reed according to claim 4, characterized in that: The electric control module (7) further comprises a motor driving board (74) connected to the pins of the stepping motor (8) to control the speed of the stepping motor (8).

6. A portable automatic riveter for mounting of a harmonica reed according to claim 2, characterized in that: The driving seat (54) is provided with a recess at the lower end, and the roller (57) is installed in the recess and is in sliding connection with the driving seat (54) and the cam (9) respectively.

7. A portable automatic riveter for mounting of a harmonica reed according to claim 2, characterized in that: The bottom of the pre-pressing sleeve (52) is provided with an annular baffle matching the inner diameter of the sliding sleeve (53).

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