Workbench safety device for a board nailing machine

Abstract

The utility model discloses a kind of wood board nailing machine workstation safety devices, including support, workbench being set on support and telescopic link being set on workbench, elastic element is arranged between telescopic link and workbench, telescopic link can be telescopic along vertical direction;Support is provided with mounting seat, proximity switch is provided on the mounting seat, the probe of the proximity switch is located below telescopic link, the probe of proximity switch is coaxially arranged with the telescopic link.Compared with the triggering failure problem caused by the deformation of extension rod in traditional limit switch, in the technical scheme provided by the utility model, the non-contact detection of proximity switch has no mechanical wear, can still output stable signal for long-term use, greatly improves the reliability and durability of safety protection of wood board nailing machine.

Description

Technical Field

[0001] This utility model relates to the field of wood nailing technology, and in particular to a safety device for the workbench of a wood nailing machine. Background Technology

[0002] As a replacement for traditional manual nailing, wood nailing machines significantly improve work efficiency. Currently, most nailing machines on the market rely on foot switches to trigger the nailing action. However, this control method poses certain safety hazards: if the operator accidentally steps on the foot switch during non-operational periods when nailing is not required, it can easily lead to accidental nailing. Patent CN210132587U discloses a wood nailing machine that improves safety through limit switches and extension rods. However, this technical solution still has some shortcomings: after long-term use, the extension rod may deform slightly, causing the pressure plate to fail to stably press against the limit switch, potentially resulting in trigger failure. In view of the above technical problems, this utility model proposes a new technical solution that can effectively prevent accidental nailing and further improve the safety performance of the wood nailing machine. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a safety device for the workbench of a wood nailing machine, which aims to solve the technical problem that the safety performance of the wood nailing machine needs to be improved in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A safety device for a board nailing machine workbench includes a bracket, a workbench mounted on the bracket, and a telescopic rod mounted on the workbench. An elastic element is provided between the telescopic rod and the workbench, and the telescopic rod can extend and retract in the vertical direction. A mounting base is provided inside the bracket, and a proximity switch is provided on the mounting base. The probe of the proximity switch is located below the telescopic rod, and the probe of the proximity switch is coaxially arranged with the telescopic rod.

[0005] Furthermore, in the aforementioned safety device for the workbench of the wood nailing machine, the mounting base includes an upper horizontal plate, a vertical plate, and a lower horizontal plate connected in sequence; the lower horizontal plate has a threaded hole adapted to the probe of the proximity switch, the outer wall of the probe of the proximity switch is provided with an external thread, and the probe of the proximity switch is screwed vertically upward into the threaded hole and fixed on the lower horizontal plate.

[0006] Furthermore, in the aforementioned safety device for the wooden board nailing machine workbench, the probe of the proximity switch is equipped with a first nut and a second nut, with the first nut located above the lower horizontal plate and the second nut located below the lower horizontal plate.

[0007] Furthermore, in the aforementioned safety device for the wooden board nailing machine workbench, the upper horizontal plate is connected to the bottom of the workbench by bolts.

[0008] Furthermore, in the aforementioned safety device for the workbench of the wood nailing machine, the upper horizontal plate extends outward and the lower horizontal plate extends inward.

[0009] Furthermore, in the aforementioned safety device for the workbench of the wood nailing machine, a stepped hole is provided on the workbench, the stepped hole including at least two through holes; along the vertical direction from top to bottom, the diameter of each through hole decreases sequentially, and an annular stepped surface is formed between two adjacent through holes.

[0010] Furthermore, in the aforementioned safety device for the workbench of the wood nailing machine, the telescopic rod includes at least two coaxial shafts, the number of shaft segments being equal to and corresponding one-to-one with the number of through-hole segments of the stepped hole; along the vertical direction from top to bottom, the diameter of each shaft segment decreases sequentially, and the diameter of each shaft segment is adapted to the diameter of the corresponding through-hole segment of the stepped hole.

[0011] Furthermore, in the aforementioned safety device for the workbench of the wood nailing machine, the step hole is coaxially arranged with the workbench.

[0012] Beneficial effects: This utility model provides a safety device for the workbench of a wood nailing machine, which has at least the following advantages compared with the prior art: The nailing process only begins when a wooden board is placed on the workbench, presses down on the extension rod, and the proximity switch senses the displacement, triggering the nailing operation in conjunction with the foot pedal. This prevents accidental triggering of the nailing process and improves the safety performance of the wooden board nailing machine. Compared to traditional limit switches, which are prone to trigger failure due to extension rod deformation, the proximity switch's non-contact detection has no mechanical wear and can maintain a stable signal output even after long-term use, significantly enhancing the reliability and durability of the wooden board nailing machine's safety protection. Attached Figure Description

[0013] Figure 1 A perspective view of the safety device for the workbench of the wood nailing machine provided by this utility model.

[0014] Figure 2 This is a front view of the safety device for the workbench of the wood nailing machine provided by this utility model. The support frame is not shown in the figure.

[0015] Figure 3 This is a cross-sectional view of the workbench and telescopic rod.

[0016] Figure 4 This is a 3D view of the mounting base.

[0017] Explanation of reference numerals in the attached figures: 1. Bracket; 2. Workbench; 3. Telescopic pole; 4. Elastic elements; 5. Mounting base; 51. Upper horizontal plate; 52. Vertical plate; 53. Lower horizontal plate; 530. Threaded hole; 6. Proximity switch probe; 71. First nut; 72. Second nut. Detailed Implementation

[0018] To make the objectives, technical solutions, and effects of this utility model clearer and more explicit, the present utility model is further described in detail below. It should be understood that the specific embodiments described herein are merely for explaining this utility model and are not intended to limit this utility model.

[0019] Please see Figures 1 to 4 This utility model provides a safety device for the workbench of a wood nailing machine. The accompanying drawings are for illustrative purposes only and are not proportional to the actual product. To facilitate observation of the internal structure, Figure 2 The support frame was not drawn.

[0020] The terms "first" and "second" used in this document are merely different names for similar structures to facilitate explanation and are not intended to limit this application.

[0021] The safety device for the board nailing machine's workbench includes a support 1, a workbench 2 mounted on the support, and a telescopic rod 3 mounted on the workbench. An elastic element 4 is installed between the telescopic rod and the workbench, allowing the telescopic rod to extend and retract vertically. A mounting base 5 is installed inside the support, on which a proximity switch (only the probe of the proximity switch is shown in the attached figure) is mounted. The probe 6 of the proximity switch is located below the telescopic rod and is coaxially arranged with it. Because the proximity switch is a non-contact position detection switch, it can operate without direct mechanical contact with moving parts, unlike traditional mechanical limit switches. When the proximity switch detects that the telescopic rod is being pressed down by a placed board, the punch (not shown in the figure) of the board nailing machine can then operate normally, thereby improving the safety performance of the board nailing machine.

[0022] The aforementioned proximity switch is preferably an inductive proximity switch. Its detection principle is to generate an alternating magnetic field through a probe. When the metal telescopic rod is pressed down by the wooden board and approaches the magnetic field area, the magnetic field will be distorted. The proximity switch determines the displacement state of the telescopic rod by detecting this distortion signal.

[0023] Please see Figure 4 Furthermore, the mounting base 5 includes an upper horizontal plate 51, a vertical plate 52, and a lower horizontal plate 53 connected in sequence. The lower horizontal plate has a threaded hole 530 adapted to the probe of the proximity switch. The outer wall of the proximity switch probe has external threads. The proximity switch probe is screwed vertically upwards into the threaded hole and fixed to the lower horizontal plate. In practical applications, the distance between the probe and the telescopic rod can be precisely adjusted by adjusting the screwing depth.

[0024] Furthermore, the proximity switch probe 6 is provided with a first nut 71 and a second nut 72. The first nut is located above the lower horizontal plate, and the second nut is located below the lower horizontal plate. The first nut and the second nut clamp from the upper and lower sides of the lower horizontal plate respectively, which can effectively fix the position of the proximity switch probe and prevent the probe from shifting due to loosening during equipment operation.

[0025] Furthermore, the upper horizontal plate is connected to the bottom of the worktable by bolts (not shown in the figure). This arrangement facilitates the connection between the upper horizontal plate and the worktable, and also helps to maintain the coaxial relationship between the telescopic rod and the probe of the proximity switch.

[0026] like Figure 2 As shown, the upper horizontal plate 51 extends outward, and the lower horizontal plate 53 extends inward. This arrangement makes the mounting base compact and space-saving. The outward orientation of the upper horizontal plate does not interfere with the telescopic rod.

[0027] like Figure 3 As shown, further, a stepped hole is provided on the workbench, which includes at least two through holes; the diameter of each through hole decreases sequentially from top to bottom in the vertical direction, and an annular stepped surface is formed between two adjacent through holes.

[0028] Furthermore, the telescopic rod includes at least two coaxial shafts, the number of shaft segments being equal to the number of through-hole segments of the stepped hole and corresponding one-to-one (i.e., each shaft can pass through the corresponding through-hole normally); along the vertical direction from top to bottom, the diameter of each shaft segment decreases sequentially, and the diameter of each shaft segment is adapted to the diameter of the corresponding through-hole segment of the stepped hole.

[0029] The significance of the above-mentioned multi-segment through holes and multi-segment shafts is that the stepped holes can provide vertical extension and retraction guidance for the telescopic rod, preventing the telescopic rod from deviating or swaying when moving up and down, ensuring that it always moves in the coaxial direction, and thus ensuring the coaxial alignment between the telescopic rod and the probe of the proximity switch below.

[0030] The attached diagram shows two through holes and two shaft sections, but in practical applications, this is not the only example.

[0031] Furthermore, the stepped hole is coaxially arranged with the worktable.

[0032] The elastic element 4 (preferably a spring) can be disposed in the through hole at the uppermost section. The uppermost shaft of the telescopic rod abuts against the elastic element. The top of the telescopic rod extends upward out of the worktable.

[0033] When a wooden board is placed on the workbench, the telescopic rod moves downwards, which is detected by the proximity switch probe, allowing the board nailing machine to operate normally. When the board is removed, the telescopic rod returns to its original position under the action of the elastic element, at which point the board nailing machine cannot nail. This completes one work cycle.

[0034] Of course, in practical applications, the above-mentioned safety device is usually used in conjunction with a foot switch (not shown in the figure). That is, when the telescopic rod is detected by the proximity switch probe, the operator steps on the foot switch, and only then will the punch of the wood nailing machine (not shown in the figure) move downward to perform nailing. If the telescopic rod is not detected by the proximity switch probe, even if the foot switch is stepped on in time, the punch will not perform nailing action. The circuit principle is briefly described as follows: The proximity switch and the foot switch are connected in series, and both are connected to the main control circuit of the wood nailing machine to form a dual-condition trigger control logic: when the proximity switch detects the downward displacement of the telescopic rod (outputs a high-level signal), and the foot switch is stepped on by the operator (outputs a conduction signal), the main control circuit can be turned on, and only then can the punch of the wood nailing machine perform the downward nailing action.

[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. It is understood that those skilled in the art can make equivalent substitutions or modifications based on the technical solution and inventive concept of the present utility model, and all such modifications or substitutions should fall within the protection scope of the present utility model.

Claims

1. A workbench safety device for a board nailing machine, comprising a support, a workbench arranged on the support, and an extension rod arranged on the workbench, characterized in that: An elastic element is provided between the telescopic rod and the worktable, allowing the telescopic rod to extend and retract vertically. A mounting base is provided inside the bracket, on which a proximity switch is mounted. The probe of the proximity switch is located below the telescopic rod, and the probe of the proximity switch is coaxially arranged with the telescopic rod.

2. The board nailer table safety apparatus of claim 1, wherein: The mounting base includes an upper horizontal plate, a vertical plate, and a lower horizontal plate connected in sequence; the lower horizontal plate has a threaded hole adapted to the probe of the proximity switch, the outer wall of the proximity switch probe is provided with an external thread, and the proximity switch probe is screwed vertically upward into the threaded hole and fixed on the lower horizontal plate.

3. The board nailer table safety apparatus of claim 2, wherein: The proximity switch probe is equipped with a first nut and a second nut. The first nut is located above the lower horizontal plate, and the second nut is located below the lower horizontal plate.

4. The board nailer table safety apparatus of claim 2, wherein: The upper horizontal plate is connected to the bottom of the workbench by bolts.

5. The board nailer table safety apparatus of claim 2, wherein: The upper horizontal plate extends outwards, and the lower horizontal plate extends inwards.

6. The board nailer table safety apparatus of claim 1, wherein: The workbench has a stepped hole, which includes at least two through holes. The diameter of each through hole decreases sequentially from top to bottom in the vertical direction, and an annular stepped surface is formed between two adjacent through holes.

7. The safety device for the workbench of the wood nailing machine according to claim 6, characterized in that: The telescopic rod includes at least two coaxial shafts, the number of shaft segments being equal to the number of through holes in the stepped hole and corresponding one-to-one; along the vertical direction from top to bottom, the diameter of each shaft segment decreases sequentially, and the diameter of each shaft segment is adapted to the diameter of the corresponding through hole in the stepped hole.

8. The safety device for the workbench of the wood nailing machine according to claim 6, characterized in that: The stepped hole is coaxially set with the worktable.

Images