Automatic expansion nail knocking mechanism

Abstract

The utility model relates to the technical field of automatic knocking, and provides an automatic knocking mechanism for an expansion nail. The automatic expansion nail knocking mechanism comprises an upper mounting seat, a lower mounting seat and an electric cylinder, the upper mounting seat and the lower mounting seat are fixed on the electric cylinder, a short oil-free bushing and a proximity switch mounting seat are mounted on the lower mounting seat, a proximity switch is mounted on the proximity switch mounting seat, an impact rod is mounted on the short oil-free bushing, and the short oil-free bushing is mounted on the impact rod. A firing pin is arranged in the striking rod; a long oil-free bushing is mounted on the upper mounting seat, a hammer rod and a driving device are mounted in the long oil-free bushing, and a hammer head and a spring are mounted on the hammer rod. Aiming at the knocking expansion process of the expansion nail, the full-automatic knocking device is adopted to replace traditional manual knocking, so that time and labor are saved, the working efficiency is improved, and the safety risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of automatic tapping technology, and in particular to an automatic tapping mechanism for expansion nails. Background Technology

[0002] Expansion nails consist of an expansion metal shell and an expansion pin. The principle is to insert the expansion nail into a pre-drilled hole in the wall, then insert a striker into the expansion nail and hold the expansion pin in place. Finally, external force is used to strike the striker, causing the expansion pin to move down and pry open the metal shell of the expansion nail, thus completing the expansion process. Currently, the method of prying expansion nails open in the wall still relies on manual hammering. This installation method is not only inefficient but also poses safety hazards. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an automatic expansion nail striking mechanism, so as to realize a device that can automatically complete the expansion nail striking and expansion.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an automatic expansion nail striking mechanism, characterized in that it includes an upper mounting base, a lower mounting base, and an electric cylinder. The upper and lower mounting bases are fixed on the electric cylinder. A short oil-free bushing and a proximity switch mounting base are mounted on the lower mounting base. A proximity switch is mounted on the proximity switch mounting base. An impact rod is mounted on the short oil-free bushing, and a striking pin is installed in the impact rod. A long oil-free bushing is mounted on the upper mounting base. A hammer rod and a driving device are mounted in the long oil-free bushing. A hammer head and a spring are mounted on the hammer rod.

[0005] Furthermore, the hammer rod and the hammer head are connected by a hinge pin.

[0006] Furthermore, a drive mounting plate is also installed in the long oil-free bushing, and an adjustment piece is installed between the drive mounting plate and the upper mounting seat.

[0007] Furthermore, the drive mounting plate is equipped with a servo mounting base, a bearing plate, and a bearing. A servo is fixed on the servo mounting base, and the servo is connected to the drive shaft via a servo disc.

[0008] Furthermore, a lever is installed on the drive shaft, and a crank is installed between the drive shaft and the bearing. The crank is equipped with a bearing retaining ring, a lever pin, a retaining spring, and a rocker arm. The crank is connected to the rocker arm, and the other end of the rocker arm is connected to the hammer rod.

[0009] Furthermore, the crank and the rocker arm are connected by a hinge pin, and the other end of the rocker arm is connected to the hammer rod by a hinge pin.

[0010] Furthermore, a rocker arm is mounted on the upper end of the hammer rod via a hinge pin, and a crank is mounted on the other end of the rocker arm via a hinge pin, with a crank pin mounted on the crank.

[0011] Furthermore, the drive shaft is fixed on the steering wheel, and the lever is fixed at the other end of the drive shaft.

[0012] Furthermore, one end of the crank passes through the inner hole of the bearing and the two are in a small clearance fit, the retaining ring is installed at the end of the crank, and the drive shaft is installed in the inner hole of one end of the crank.

[0013] Furthermore, the short oil-free bushing is equipped with a striking rod, which can slide back and forth in the inner hole of the short oil-free bushing, and the striking pin is installed inside the striking rod.

[0014] Compared with the prior art, the advantages of this utility model are as follows: 1. For the hammering expansion process of expansion nails, a fully automatic hammering device is used to replace the manual hammering of the transmission, which saves time and effort, improves work efficiency, and reduces safety risks; 2. The hammering action is realized by using a servo motor to drive the crank slider mechanism, which has a simple and compact structure and is conducive to automation integration; 3. It has a detection function to detect whether the expansion process is completed.

[0015] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the automatic expansion nail striking mechanism in this embodiment;

[0018] Figure 2 This is a front view of the automatic expansion nail striking mechanism of this embodiment;

[0019] Figure 3 This is a schematic diagram of the automatic expansion nail striking mechanism in this embodiment striking the expansion nail;

[0020] Figure 4 This is a schematic diagram of the expansion nail structure in this embodiment;

[0021] In the diagram: 1. Electric cylinder; 2. Lower mounting base; 3. Impact rod; 4. Strike pin; 5. Short oil-free bushing; 6. Hammer head; 7. Hammer rod; 8. Proximity switch; 9. Proximity switch mounting base; 10. Spring; 11. Upper mounting base; 12. Adjusting plate; 13. Servo motor; 14. Crank; 15. Servo motor mounting base; 16. Bearing retaining ring; 17. Drive mounting plate; 18. Bearing pressure plate; 19. Lever; 20. Actuating pin; 21. Rocker arm; 22. Long oil-free bushing; 23. Drive shaft; 24. Snap ring; 25. Bearing. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0024] The terms "up / down" and "left / right" used in this utility model can be used to describe the direction of movement, the location of a specific point, etc. Basically, they are based on... Figure 2 and along Figure 2 The orientation and position of the paper are as follows: the top and bottom sides are "top / bottom", and the left and right sides are "left / right".

[0025] like Figure 1 , Figure 2The diagram shows the overall structure of the automatic expansion nail striking mechanism in this embodiment. Fixed to the electric cylinder 1 are a lower mounting base 2 and an upper mounting base 11. A short, oil-free bushing 5 and a proximity switch mounting base 9 are mounted on the lower mounting base 2. A proximity switch 8 is mounted on the proximity switch mounting base 9. An impact rod 3 is mounted on the short, oil-free bushing 5, and a striking pin 4 is installed in the impact rod 3. A long, oil-free bushing 22 is mounted on the upper mounting base 11, and a hammer rod 7 is installed in the long, oil-free bushing 22. A hammer head 6 and a spring 10 are mounted on the hammer rod 7, and the hammer rod 7 and hammer head 6 are connected by a hinge pin. A drive mounting plate 17 is also mounted on the upper mounting base 11, and an adjusting piece 12 is installed between the drive mounting plate 17 and the upper mounting base 11. A servo mount 15, a bearing clamp 18, and a bearing 25 are mounted on the drive mounting plate 17. A servo 13 is fixed on the servo mount 15. The servo 13 is connected to a drive shaft 23 via a servo disc. A lever 19 is mounted on the drive shaft 23. A crank 14 is mounted between the drive shaft 23 and the bearing 25. A bearing retaining ring 16, a lever pin 20, a retaining ring 24, and a rocker arm 21 are mounted on the crank 14. The crank 14 and the rocker arm 21 are connected by a hinge pin. The other end of the rocker arm 21 is connected to a hammer rod 7 by a hinge pin. One end of the crank 14 passes through the inner hole of the bearing 25 with a small clearance fit. A retaining ring 24 is mounted at the end of the crank 14, and the drive shaft 23 is mounted in the inner hole of one end of the crank 14.

[0026] The specific operation flow of the automatic hammering mechanism for expansion nails in this embodiment is as follows:

[0027] like Figure 3 As shown, expansion nails are pre-installed in the wall. At this time, the striker 4 is aligned with the inner hole of the expansion nail. The electric cylinder 1 moves downward so that the striker 4 hits the expansion pin inside the expansion nail. The electric cylinder 1 continues to move downward. At this time, the impact rod 3 moves upward and drives the hammer head 6 to move upward. When the hammer head 6 moves upward into the detection area of ​​the proximity switch 8, the electric cylinder 1 stops and remains stationary. At this time, the servo motor 13 rotates so that the lever 19 contacts the actuating pin 20 and drives the crank 14 to rotate. The crank 14 drives the hammer head 6 to move upward and compresses the spring 10. When the crank 14 rotates and passes the uppermost center plane, the entire crank-slider mechanism moves downward rapidly under the action of the spring force, so that the hammer head 6 strikes the impact rod 3. At the same time, the striker 4 will strike the expansion pin and make it move downward. If the hammer head 6 is still in the detection area of ​​the proximity switch 8 after this strike is completed, the strike action needs to be performed again until the hammer head 6 leaves the detection area of ​​the proximity switch 8 after the strike is completed. At this time, the automatic strike expansion process of the expansion nail is completed.

[0028] This utility model addresses the hammering expansion process of expansion nails by employing a fully automatic hammering device to replace manual hammering via transmission, saving time and labor, improving work efficiency, and reducing safety risks. It uses a servo motor-driven crank-slider mechanism to achieve the hammering action, resulting in a simple and compact structure that facilitates automation integration. It also has a detection function to check whether the expansion process is complete.

[0029] It should be noted that, in this application, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An automatic tapping mechanism for expansion nails, characterized in that, The device includes an upper mounting base, a lower mounting base, and an electric cylinder. The upper and lower mounting bases are fixed to the electric cylinder. A short oil-free bushing and a proximity switch mounting base are mounted on the lower mounting base. A proximity switch is mounted on the proximity switch mounting base. An impact rod with a firing pin is mounted on the short oil-free bushing. A long oil-free bushing with a hammer rod and a driving device is mounted in the long oil-free bushing. A hammer head and a spring are mounted on the hammer rod.

2. The automatic tapping mechanism for expansion nails according to claim 1, characterized in that, The hammer rod and the hammer head are connected by a hinge pin.

3. The automatic tapping mechanism for expansion nails according to claim 1, characterized in that, The long, oil-free bushing is also equipped with a drive mounting plate, and an adjustment piece is installed between the drive mounting plate and the upper mounting base.

4. The automatic tapping mechanism for expansion nails according to claim 3, characterized in that, The drive mounting plate is equipped with a servo motor mounting base, a bearing plate, and a bearing. A servo motor is fixed on the servo motor mounting base, and the servo motor is connected to the drive shaft via a servo disc.

5. The automatic tapping mechanism for expansion nails according to claim 4, characterized in that, A lever is mounted on the drive shaft, and a crank is installed between the drive shaft and the bearing. The crank is equipped with a bearing retaining ring, a lever pin, a retaining spring, and a rocker arm. The crank is connected to the rocker arm, and the other end of the rocker arm is connected to the hammer rod.

6. The automatic tapping mechanism for expansion nails according to claim 5, characterized in that, The crank and the rocker arm are connected by a hinge pin, and the other end of the rocker arm is connected to the hammer rod by a hinge pin.

7. The automatic tapping mechanism for expansion nails according to claim 6, characterized in that, A rocker arm is mounted on the upper end of the hammer rod via a hinge pin, and a crank is mounted on the other end of the rocker arm via a hinge pin. A crank pin is mounted on the crank.

8. The automatic tapping mechanism for expansion nails according to claim 5, characterized in that, The drive shaft is fixed on the steering wheel, and the lever is fixed at the other end of the drive shaft.

9. The automatic tapping mechanism for expansion nails according to claim 5, characterized in that, One end of the crank passes through the inner hole of the bearing and the two are in a small clearance fit. The retaining ring is installed at the end of the crank, and the drive shaft is installed in the inner hole of one end of the crank.

10. The automatic tapping mechanism for expansion nails according to claim 1, characterized in that, The short oil-free bushing is equipped with a ramming rod, which can slide back and forth in the inner hole of the short oil-free bushing, and the ramming rod is equipped with the ramming pin.

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