Automatic thread rolling machine for hexagonal head pressing rivet screw

Abstract

The utility model discloses an automatic thread rolling machine for hexagonal head pressing rivet screws. The automatic thread rolling machine comprises a thread rolling table and a vertical positioning mechanism. A fixed thread rolling plate is arranged at the front end of the upper side of the thread rolling table through a fixing seat, first sliding grooves which are evenly distributed are formed in the rear end of the upper side of the thread rolling table, a sliding seat is slidably connected between the first sliding grooves, and a sliding thread rolling plate is transversely slidably connected to the front end of the sliding seat. The vertical positioning mechanism comprises a synchronous plate, a limiting sliding plate and a discharging sliding plate, the synchronous plate is arranged on the upper side of the sliding thread rolling plate, second sliding grooves which are evenly distributed are formed in the front side of the synchronous plate, the limiting sliding plate is slidably connected between the second sliding grooves, and third sliding grooves which are evenly distributed are formed in the upper side of the limiting sliding plate. According to the utility model, the lower end of the hexagonal head pressing rivet screw is completely positioned between the two thread rolling plates through the elastic element, so that thread rolling errors caused by inaccurate vertical thread rolling positioning of the hexagonal head pressing rivet screw can be effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of hardware precision processing, in particular to an automatic thread rolling machine for hexagonal head rivet screws. Background Art

[0002] Compression rivet bolts, also called compression rivet screws, compression rivet screws, are fasteners used for compression riveting. They are standard parts. Hexagonal head compression rivet screws rely on the six opposite sides of the head to be stuck in the sheet metal to prevent sliding. During the production process of hexagonal head compression rivet screws, the thread groove is processed by a thread rolling machine.

[0003] When the thread rolling machine in the prior art is thread rolling and feeding the hexagonal head self-rivet screw, the hexagonal head self-rivet screw is vertically moved between the movable thread rolling plate and the fixed thread rolling plate by its own gravity. The hexagonal head self-rivet screw is subject to many external interference factors during the feeding process, which can easily cause the shaft of the hexagonal head self-rivet screw to be exposed above the thread rolling plate. This method cannot ensure that the lower end of the hexagonal head self-rivet screw itself can be completely located between the two thread rolling plates, which can easily cause the hexagonal head self-rivet screw to have a thread rolling error. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide an automatic thread rolling machine for hexagonal head self-rivet screws. The device uses an elastic element to make the lower end of the hexagonal head self-rivet screw completely between two thread rolling plates, thereby avoiding thread rolling errors caused by inaccurate vertical thread rolling positioning of the hexagonal head self-rivet screw. The device is easy to use and can effectively solve the problems in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic thread rolling machine for hexagonal head rivet screws, comprising a thread rolling table and a vertical positioning mechanism;

[0006] The upper front end of the rolling table is provided with a fixed rolling plate through a fixed seat, and the upper rear end of the rolling table is provided with evenly distributed sliding grooves, the sliding grooves are slidably connected with a sliding seat, and the front end of the sliding seat is laterally slidably connected with a sliding rolling plate;

[0007] The vertical positioning mechanism includes a synchronous plate, a limiting slide and a material discharge slide. The synchronous plate is arranged on the upper side of the sliding thread-rolling plate. The front side of the synchronous plate is provided with evenly distributed sliding grooves 2, and the limiting slide is slidably connected between the sliding grooves 2. The upper side of the limiting slide is provided with evenly distributed sliding grooves 3, and the material discharge slide is slidably connected between the sliding grooves 3.

[0008] Furthermore, it also includes a single-chip microcomputer, which is arranged outside the tooth-rubbing table. The input end of the single-chip microcomputer is electrically connected to the external power supply, which is convenient for controlling electrical components.

[0009] Furthermore, a photoelectric sensor 1 is provided on the right side of the fixed rubbing plate and the sliding rubbing plate, and the photoelectric sensor 1 is bidirectionally electrically connected to the single-chip microcomputer to detect the rubbing distance between the rubbing plates and upload it.

[0010] Furthermore, an electric push rod is provided on the rear side of the thread rolling table, the input end of the electric push rod is electrically connected to the output end of the single-chip microcomputer, and the telescopic end of the electric push rod is fixedly connected to the sliding seat, providing power for the device to adjust the thread rolling spacing of the hexagonal head rivet screws.

[0011] Furthermore, an electric push rod 2 is provided on the rear side of the sliding seat, the input end of the electric push rod 2 is electrically connected to the output end of the single-chip microcomputer, and a connecting seat is provided at the telescopic end of the electric push rod 2. The front side of the connecting seat passes through the avoidance groove and is fixedly connected to the sliding threading plate to provide power for the threading of the hexagonal head riveting screws of the device.

[0012] Furthermore, a feeding seat is provided on the front side of the fixed seat, and an electric push rod three is provided on the front side of the feeding seat. The input end of the electric push rod three is electrically connected to the output end of the single-chip microcomputer. A loading seat is provided at the telescopic end of the electric push rod three. A photoelectric sensor two and a lifting push rod are respectively provided on the upper side of the loading seat. The lifting push rod is installed in coordination with the limiting slide plate. The photoelectric sensor two is electrically connected bidirectionally with the single-chip microcomputer to realize the threading and feeding of the hexagonal head rivet screws.

[0013] Furthermore, the vertical positioning mechanism also includes telescopic column 1, spring 1, telescopic column 2 and spring 2. The telescopic column 1 and spring 1 are evenly arranged between the sliding thread rolling plate and the limiting slide plate. The spring 1 is movably connected to the outer end of the adjacent telescopic column 1. Evenly distributed telescopic columns 2 and spring 2 are provided between the synchronous plate and the blanking slide plate. The spring 2 is movably connected to the outer end of the adjacent telescopic column 2. The vertical limiting of the hexagonal head rivet screw and the forward movement and resetting of the blanking slide are achieved through the stretching elastic force of the spring.

[0014] Furthermore, the vertical positioning mechanism also includes a contact guide seat, which is arranged on the right rear side of the blanking slide, and an arc guide seat is provided on the upper side of the sliding seat. The arc guide seat is installed in cooperation with the contact guide seat, so that the blanking slide can move forward to perform the material removal operation on the hexagonal head rivet screw after rolling.

[0015] Furthermore, the vertical positioning mechanism also includes a rotating ball, which is rotatably connected to a semicircular groove opened on the lower side of the limiting slide. The rotating balls pass through the through groove in the middle of the blanking slide, thereby reducing the friction between the limiting slide and the hexagonal head self-rivet screw during the threading process of the hexagonal head self-rivet screw.

[0016] Furthermore, evenly distributed grooves are provided inside the fixed rolling plate, and limit seats are provided inside the grooves through arc-shaped spring sheets to prevent the hexagonal head rivet screws between the rolling plates from moving longitudinally during the feeding process.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] During the threading and feeding process of the hexagonal head self-rivet screw, when the lifting push rod moves back to a certain extent, its rear end inclined surface contacts the lower edge of the front side of the limit slide plate, and the limit slide seat slides vertically upward along the slide groove 2 through the extrusion force of the inclined surface, and the telescopic column 1 and the spring 1 are stretched. When the hexagonal head self-rivet screw enters between the fixed threading plate and the sliding threading plate, the telescopic end of the electric push rod 3 contracts and resets. At this time, the stretching elastic force of the spring 1 causes the limit slide plate to slide vertically, thereby squeezing and fixing the hexagonal head of the hexagonal head self-rivet screw to the threading plate. The upper side of the hexagonal head self-rivet screw and the lower side of the limiting slide plate are used to avoid inaccurate vertical positioning of the hexagonal head self-rivet screw, which may cause errors in the subsequent thread rolling process of the hexagonal head self-rivet screw. The rear side of the hexagonal head self-rivet screw after vertical thread rolling is not in contact with the blanking slide plate. The automatic thread rolling machine for hexagonal head self-rivet screws uses an elastic element to make the lower end of the hexagonal head self-rivet screw completely between the two thread rolling plates, which avoids thread rolling errors caused by inaccurate vertical thread rolling positioning of the hexagonal head self-rivet screw. The machine is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the right side structure of the utility model;

[0021] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0022] Figure 4 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0023] In the figure: 1 thread rolling table, 2 single chip computer, 3 fixed seat, 4 fixed thread rolling plate, 5 sliding seat, 6 sliding thread rolling plate, 7 vertical positioning mechanism, 71 synchronization plate, 72 limit slide plate, 73 telescopic column 1, 74 spring 1, 75 unloading slide plate, 76 telescopic column 2, 77 spring 2, 78 contact guide seat, 79 rotating ball, 8 photoelectric sensor 1, 9 electric push rod 1, 10 electric push rod 2, 11 connecting seat, 12 arc guide seat, 13 feeding seat, 14 electric push rod 3, 15 loading seat, 16 photoelectric sensor 2, 17 lifting push rod, 18 limit seat. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 , the present embodiment provides a technical solution: an automatic thread rolling machine for hexagonal head riveting screws, comprising a thread rolling table 1 and a vertical positioning mechanism 7; a fixed thread rolling plate 4 is provided at the upper front end of the thread rolling table 1 through a fixed seat 3, and a uniformly distributed slide groove 1 is opened at the upper rear end of the thread rolling table 1, and a sliding seat 5 is slidably connected between the slide grooves, and a sliding thread rolling plate 6 is slidably connected at the front end of the sliding seat 5; it also includes a single-chip microcomputer 2, which is arranged on the outside of the thread rolling table 1, and the input end of the single-chip microcomputer 2 is electrically connected to an external power supply; a photoelectric sensor 8 is provided on the right side of the fixed thread rolling plate 4 and the sliding thread rolling plate 6, and the photoelectric sensor 8 is bidirectionally electrically connected to the single-chip microcomputer 2, and an electric push rod 9 is provided on the rear side of the thread rolling table 1, and the input end of the electric push rod 9 is electrically connected to the output end of the single-chip microcomputer 2, and the telescopic end of the electric push rod 9 is fixedly connected to the sliding seat 5 An electric push rod 2 10 is provided on the rear side of the sliding seat 5, and the input end of the electric push rod 2 10 is electrically connected to the output end of the single-chip microcomputer 2. A connecting seat 11 is provided at the telescopic end of the electric push rod 2 10, and the front side of the connecting seat 11 passes through the avoidance groove and is fixedly connected to the sliding thread rolling plate 6. A feeding seat 13 is provided on the front side of the fixed seat 3, and an electric push rod 3 14 is provided on the front side of the feeding seat 13. The input end of the electric push rod 3 14 is electrically connected to the output end of the single-chip microcomputer 2, and a loading seat 15 is provided on the telescopic end of the electric push rod 3 14. A photoelectric sensor 2 16 and a lifting push rod 17 are respectively provided on the upper side of the loading seat 15. The lifting push rod 17 is installed in cooperation with the limit slide plate 72, and the photoelectric sensor 2 16 is bidirectionally electrically connected to the single-chip microcomputer 2. Evenly distributed grooves are opened inside the fixed thread rolling plate 4, and limit seats 18 are provided inside the grooves through arc spring sheets.

[0026] Among them, the vertical positioning mechanism 7 includes a synchronous plate 71, a limiting slide plate 72 and a blanking slide plate 75. The synchronous plate 71 is arranged on the upper side of the sliding rubbing plate 6. The front side of the synchronous plate 71 is provided with a uniformly distributed slide groove 2, and the limiting slide plate 72 is slidably connected between the slide grooves 2. The upper side of the limiting slide plate 72 is provided with a uniformly distributed slide groove 3, and the blanking slide plate 75 is slidably connected between the slide grooves 3; the vertical positioning mechanism 7 also includes a telescopic column 1 73, a spring 1 74, a telescopic column 2 76 and a spring 2 77. The telescopic column 1 73 and the spring 1 74 are uniformly arranged between the sliding rubbing plate 6 and the limiting slide plate 72, and the spring 1 74 is connected to the adjacent telescopic column 1 The outer end of 73 is movably socketed, and evenly distributed telescopic columns 76 and springs 77 are provided between the synchronous plate 71 and the unloading slide 75. The springs 77 are movably socketed with the outer ends of the adjacent telescopic columns 76. The vertical positioning mechanism 7 also includes a contact guide seat 78, which is arranged on the right rear side of the unloading slide 75. An arc guide seat 12 is provided on the upper side of the sliding seat 5, and the arc guide seat 12 is installed in coordination with the contact guide seat 78; the vertical positioning mechanism 7 also includes a rotating ball 79, which is rotatably connected to the semicircular groove opened on the lower side of the limiting slide 72, and the rotating balls 79 pass through the through groove in the middle of the unloading slide 75.

[0027] The working principle of the utility model is as follows:

[0028] When the hexagonal head self-clinching screws are automatically threaded, the feed port of the feed seat 13 is first connected to the discharge port of the external vibration feeder, and the input end of the external vibration feeder is electrically connected to the output end of the single-chip microcomputer 2. Then, the single-chip microcomputer 2 starts the external vibration feeder to transport the hexagonal head self-clinching screws into the feed seat 13. At the same time, the single-chip microcomputer 2 starts the photoelectric sensor 16, which emits a light signal and receives a reflected signal of the light signal, and transmits the result to the single-chip microcomputer 2 in the form of an electrical signal;

[0029] When a hexagonal head self-clinching screw is introduced into the feed seat 13, the single-chip microcomputer 2 detects the hexagonal head self-clinching screw through the photoelectric sensor 2 16, and then the single-chip microcomputer 2 turns off the external vibration feeding plate to prevent a large amount of hexagonal head self-clinching screws in the feed seat 13 from accumulating. Then the single-chip microcomputer 2 starts the electric push rod 3 14 so that its telescopic end drives the loading seat 15 to move backward, thereby moving the hexagonal head self-clinching screw in the feed seat 13 to between the fixed rubbing plate 4 and the sliding rubbing plate 6. In this process, when the arc surface of the limit seat 18 is compressed, the arc spring sheet bends, and the limit seat 18 enters the corresponding groove;

[0030] When the locking cam 72 is in the locked state, the locking cam 73 is in the locked state, and the locking cam 73 is in the locked state.

[0031] The rear side of the hexagonal head self-clinching screw after the thread rolling is vertically fixed does not contact the blanking slide plate 75, and the arc spring piece is reset, so that the limit seat 18 moves to the outside of the groove, thereby limiting the longitudinal movement of the hexagonal head self-clinching screw between the thread rolling plates;

[0032] Then, the single chip computer 2 starts the electric push rod 2 10 so that its telescopic end drives the sliding threading plate 6 to slide to the left along the sliding seat 5 through the connecting seat 11, and the two threading plates cooperate to perform threading operation on the lower end of the hexagonal head self-clinching screw. During this process, the upper side of the hexagonal head self-clinching screw contacts the rotating ball 79 on the lower side of the limiting slide plate 72, and the rotating ball 79 adaptively rotates around the corresponding semicircular groove, thereby reducing the contact friction interference of the limiting slide plate 72 on the hexagonal head self-clinching screw during the threading process;

[0033] When the hexagonal head self-riveting screw moves to a certain extent to the left along with the sliding thread rolling plate 6, the contact guide seat 78 contacts the arc surface of the arc-shaped guide seat 12, and the contact pressure between the arc surfaces causes the contact guide seat 78 to drive the blanking slide plate 75 to move forward along the slide groove 3, and the telescopic column 2 76 and the spring 2 77 are stretched, and the hexagonal head of the hexagonal head self-riveting screw is pushed out from between the sliding thread rolling plate 6 and the limiting slide plate 72 through the blanking slide plate 75, so as to realize the thread rolling and blanking operation of the hexagonal head self-riveting screw. In this process, the rotating ball 79 passes through the through slot in the middle of the blanking slide plate 75 to avoid interference between the two, and then the blanking slide plate 75 is moved back and reset by the stretching elastic force of the spring 2 77;

[0034] When the model of the hexagonal head rivet screw itself changes, the single chip computer 2 starts the photoelectric sensor 8, and obtains the distance between the two thread rolling plates by the time required for the light signal to propagate between the two photoelectric sensors 8, combined with the light signal propagation speed, and transmits the result to the single chip computer 2 in the form of an electrical signal. The single chip computer 2 controls the electric push rod 9 according to the result so that its telescopic end drives the sliding seat 5 to slide along the slide groove, thereby adjusting the thread rolling distance between the two thread rolling plates, which is easy to use.

[0035] It is worth noting that the single chip microcomputer 2 disclosed in the above embodiment can adopt MCS-51, the photoelectric sensor 1 8 can adopt E3Z through-beam photoelectric sensor, the photoelectric sensor 2 16 can adopt EE-SB5-B reflective photoelectric sensor, the electric push rod 1 9 and the electric push rod 2 10 can adopt DTZ630, the electric push rod 3 14 can adopt GRA-L25, and the single chip microcomputer 2 controls the operation of the photoelectric sensor 1 8, the electric push rod 1 9, the electric push rod 2 10, the electric push rod 3 14 and the photoelectric sensor 2 16 by adopting the methods commonly used in the prior art.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An automatic thread rolling machine for hexagonal head rivet screws, characterized in that: It comprises a tooth rolling table (1) and a vertical positioning mechanism (7); The upper front end of the thread rolling table (1) is provided with a fixed thread rolling plate (4) through a fixed seat (3), and the upper rear end of the thread rolling table (1) is provided with evenly distributed sliding grooves, and a sliding seat (5) is slidably connected between the sliding grooves, and the front end of the sliding seat (5) is laterally slidably connected to a sliding thread rolling plate (6); The vertical positioning mechanism (7) comprises a synchronous plate (71), a limiting slide plate (72) and a material removal slide plate (75); the synchronous plate (71) is arranged on the upper side of the sliding thread rolling plate (6); the front side of the synchronous plate (71) is provided with evenly distributed sliding grooves 2, between which the limiting slide plate (72) is slidably connected; the upper side of the limiting slide plate (72) is provided with evenly distributed sliding grooves 3, between which the material removal slide plate (75) is slidably connected.

2. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 1, characterized in that: It also comprises a single-chip microcomputer (2), which is arranged outside the tooth-rubbing table (1), and an input end of the single-chip microcomputer (2) is electrically connected to an external power supply.

3. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 2, characterized in that: The right sides of the fixed rubbing plate (4) and the sliding rubbing plate (6) are both provided with a photoelectric sensor 1 (8), and the photoelectric sensor 1 (8) is bidirectionally electrically connected to the single-chip computer (2).

4. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 2, characterized in that: An electric push rod (9) is provided on the rear side of the thread rolling table (1); the input end of the electric push rod (9) is electrically connected to the output end of the single chip computer (2); and the telescopic end of the electric push rod (9) is fixedly connected to the sliding seat (5).

5. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 2, characterized in that: The rear side of the sliding seat (5) is provided with an electric push rod 2 (10), the input end of the electric push rod 2 (10) is electrically connected to the output end of the single chip computer (2), the telescopic end of the electric push rod 2 (10) is provided with a connecting seat (11), the front side of the connecting seat (11) passes through the avoidance groove and is fixedly connected to the sliding rubbing plate (6).

6. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 2, characterized in that: A feed seat (13) is provided on the front side of the fixed seat (3), and an electric push rod three (14) is provided on the front side of the feed seat (13). The input end of the electric push rod three (14) is electrically connected to the output end of the single-chip computer (2). A loading seat (15) is provided on the telescopic end of the electric push rod three (14). A photoelectric sensor two (16) and a lifting push rod (17) are respectively provided on the upper side of the loading seat (15). The lifting push rod (17) is installed in coordination with the limiting slide plate (72), and the photoelectric sensor two (16) is electrically connected to the single-chip computer (2) in a bidirectional manner.

7. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 1, characterized in that: The vertical positioning mechanism (7) further comprises a telescopic column (73), a spring (74), a telescopic column (76) and a spring (77). The telescopic column (73) and the spring (74) are evenly arranged between the sliding thread rolling plate (6) and the limiting slide plate (72). The spring (74) is movably connected to the outer end of the adjacent telescopic column (73). The telescopic column (76) and the spring (77) are evenly distributed between the synchronous plate (71) and the unloading slide plate (75). The spring (77) is movably connected to the outer end of the adjacent telescopic column (76).

8. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 1, characterized in that: The vertical positioning mechanism (7) also includes a contact guide seat (78), which is arranged on the right rear side of the unloading slide plate (75). An arc guide seat (12) is provided on the upper side of the sliding seat (5), and the arc guide seat (12) is installed in coordination with the contact guide seat (78).

9. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 1, characterized in that: The vertical positioning mechanism (7) also includes a rotating ball (79), which is rotatably connected to a semicircular groove opened on the lower side of the limiting slide (72), and the rotating balls (79) pass through a through groove in the middle of the blanking slide (75).

10. The automatic thread rolling machine for hexagonal head self-clinching screws according to claim 1, characterized in that: The fixed rubbing plate (4) is provided with evenly distributed grooves, and the insides of the grooves are provided with limit seats (18) via arc-shaped spring sheets.

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