A kind of induction limit mechanism of punching device

Abstract

The utility model relates to the technical field of punching devices, and specifically to an inductive limit mechanism of a punching device; the utility model comprises a mounting portion, a connecting portion and a limit portion, the mounting portion is used to be mounted on the punching device, the limit portion is connected to the mounting portion through the connecting portion, the bottom wall of the limit portion is horizontally arranged to form a limit surface, the limit surface is provided with a groove, a movable block which can move vertically between an initial position and an end position relative to the limit surface is arranged in the groove, in the initial position, the movable block at least partially extends out of the limit surface, in the end position, the bottom wall of the movable block is flush with the limit surface; the limit mechanism also comprises a sensing unit, the sensing unit comprises an alarm component, wherein the sensing unit is configured such that when the movable block is in the end position, the alarm component sends a warning signal; the warning signal sent directly by the alarm component is undoubtedly more intuitive than the traditional method of relying on human perception.

Description

Technical Field

[0001] The utility model relates to the technical field of punching devices, in particular to an induction limiting mechanism of a punching device. Background Art

[0002] In mechanical processing technology, it is often necessary to use a punching device to drill holes on the workpiece, such as using an electric drill to drill holes. In some drilling processes, there are specific requirements for the drilling depth, and the drilling depth must be within the set range. Therefore, it is difficult to rely solely on manual experience to judge whether the hole depth meets the requirements during drilling.

[0003] Therefore, a limit mechanism is usually set at the drill bit position on some electric drills to control the drilling depth. When drilling, as the drill bit continues to drill, the limit mechanism will eventually abut against the surface of the workpiece, at which time it means that the required drilling depth has been reached; for example, a patent document with publication number CN218080560U discloses an electric drill that can control the drilling depth, which mainly relies on a limit plate to achieve control of the drilling depth.

[0004] However, this method still has disadvantages when used. For example, when the limit plate abuts against the surface of the workpiece, the drill bit will not continue to drill due to the limitation of the limit plate, thereby achieving hole depth control. In this process, people need to rely on their senses to sense whether the limit plate abuts against the surface of the workpiece. It is difficult to intuitively judge whether the limit plate has reached a state of abutting against the workpiece, so it needs to be improved. Utility Model Content

[0005] In order to solve at least one of the technical problems mentioned in the background technology, the purpose of the utility model is to provide an induction limit mechanism for a punching device.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A sensing limit mechanism for a punching device comprises a mounting portion, a connecting portion and a limit portion, wherein the mounting portion is used to be mounted on the punching device, the limit portion is connected to the mounting portion via the connecting portion, the bottom wall of the limit portion is horizontally arranged to form a limit surface, the limit surface is provided with a groove, a movable block is provided in the groove and can move vertically between an initial position and an end position relative to the limit surface, in the initial position, the movable block at least partially extends out of the limit surface, and in the end position, the bottom wall of the movable block is flush with the limit surface; the limit mechanism also comprises a sensing unit, the sensing unit comprises an alarm component, wherein the sensing unit is configured such that when the movable block is in the end position, the alarm component sends a warning signal, wherein the warning signal comprises a visible light signal and / or a sound signal.

[0008] Compared with the prior art, the advantages of adopting this solution are:

[0009] When the present solution is applied to a drilling device, the limiting portion plays a limiting role to limit the depth of the hole. During the drilling process, the movable block will first contact the surface of the workpiece, and then be blocked by the workpiece to maintain the current position, while the limiting portion will continue to move downward with the drilling device. At this time, the movable block will move into the groove relative to the limiting portion (i.e., move toward the end position), and finally the limiting portion will abut against the surface of the workpiece. At this time, the movable block will enter the end position, so that the alarm component is triggered and a warning signal is issued to remind the user.

[0010] It can be seen that in this solution, when the drilling depth reaches the predetermined depth, the warning signal is directly sent out by the warning component, which is undoubtedly more intuitive than the traditional method that relies on human perception.

[0011] Preferably, the sensing unit includes a power supply circuit for powering the alarm component, the power supply circuit includes two terminals and a conductive sheet, there is an open circuit between the two terminals, and the power supply circuit is turned on when the two terminals are connected, and the conductive sheet is used to contact the two terminals at the same time to connect the two terminals; the two terminals are arranged at the bottom of the groove, and the conductive sheet is arranged at the top of the movable block; at the end position, the conductive sheet is in contact with the two terminals at the same time.

[0012] Preferably, the warning component includes a buzzer and / or an indicator light.

[0013] Preferably, the power supply circuit comprises a mobile power source, and the mobile power source is arranged on at least one of the mounting portion, the connecting portion and the limiting portion.

[0014] Preferably, the limiting mechanism also includes an elastic component, which includes a spring and a guide rod. The guide rod is vertically movably arranged in the limiting part at the groove position. The lower end of the guide rod is fixed to the movable block, and the upper end extends out of the limiting part. The spring is sleeved on the guide rod, and one end of the spring is fixed to the upper end of the guide rod, and the other end is fixed to the limiting part; the spring is used to provide elastic force so that the movable block has a tendency to move toward the initial position.

[0015] Preferably, the connecting portion is a telescopic and adjustable structure.

[0016] Preferably, the connecting part includes a fixed rod and a movable rod, the movable rod is arranged on the fixed rod and can slide relative to the fixed rod; the fixed rod is installed on the mounting part, the movable rod is fixed to the limiting part, and a bolt for locking the relative positions of the fixed rod and the movable rod is provided between the fixed rod and the movable rod.

[0017] Preferably, the connecting portion is hinged on the mounting portion, and a locking member for locking the connecting portion is provided between the mounting portion and the connecting portion.

[0018] Preferably, the locking member comprises a screw and a nut, the screw is fixed on the mounting portion, a waist-shaped hole for the screw to pass through is opened on the connecting portion corresponding to the position of the screw, and the nut is used to cooperate with the screw thread to press the connecting portion onto the mounting portion.

[0019] Preferably, an opening for a drill bit to pass vertically is formed at one end of the limiting portion away from the connecting portion.

[0020] Other advantages and effects of the present invention are explained in detail in the specific implementation manner and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 is a schematic diagram of the bottom structure of the limiting part;

[0023] Figure 3 It is an exploded view of the limit part and the movable block;

[0024] Figure 4 is a cross-sectional view of the limiting portion;

[0025] Figure 5 is a circuit diagram of an induction circuit;

[0026] Figure 6 This is a structural schematic diagram of the utility model when it is installed on an electric drill. DETAILED DESCRIPTION

[0027] The following is an explanation and description of the technical scheme of the embodiment of the utility model in conjunction with the drawings of the embodiment of the utility model, but the following embodiment is only a preferred embodiment of the utility model, not all. Based on the embodiment in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the utility model.

[0028] In the following description, terms such as "inside", "outside", "up", "down", "left", "right", etc. that indicate directions or positional relationships are only used to facilitate the description of the embodiments and simplify the description, and do not indicate or imply that the referred device or element must have a specific direction, be constructed and operate in a specific direction. Therefore, it should not be understood as a limitation on the present invention.

[0029] See also Figure 1-6As shown, this embodiment provides a punching device sensing limit mechanism, including a mounting portion 1, a connecting portion 2 and a limit portion 3, wherein the mounting portion 1 is used to be mounted on the punching device, wherein the punching device may be an electric drill. In this embodiment, the electric drill is used as an example for specific description, and the mounting portion 1 may be mounted on the outer peripheral wall of the electric drill by means of bolts 221 or welding. Figure 6 The status shown, Figure 6 In the figure, M is an electric drill and M1 is a drill bit.

[0030] like Figure 1 As shown, the limiting part 3 is connected to the mounting part 1 through the connecting part 2. The limiting part 3 mainly plays a limiting role, thereby controlling the drilling depth of the drill bit of the electric drill. The bottom wall of the limiting part 3 is horizontally arranged to form a limiting surface 32. An opening 31 for the drill bit to pass vertically is provided at one end of the limiting part 3 away from the connecting part 2. When in use, the drill bit passes through the opening 31, and the opening 31 is equivalent to forming a avoidance for the feed of the drill bit.

[0031] like Figure 3 As shown, the limiting surface 32 is provided with a groove 33 , and a movable block 5 is arranged in the groove 33 and can move vertically between an initial position and an end position relative to the limiting surface 32 .

[0032] In the initial position, Figure 2 As shown, the movable block 5 at least partially extends out of the limiting surface 32 .

[0033] At the end position, the bottom wall of the movable block is flush with the limiting surface 32 .

[0034] The limiting mechanism further comprises a sensing unit, and the sensing unit comprises an alarm component 43, wherein the sensing unit is configured such that when the movable block is at the end position, the alarm component 43 sends out an alarm signal, wherein the alarm signal comprises a visible light signal and / or a sound signal.

[0035] The warning component 43 may be an indicator light that can emit visible light, or a buzzer that can emit sound, or a combination of the two, which is not specifically limited here.

[0036] In the initial state, the movable block 5 is in the initial position. As the drill bit of the electric drill continues to drill deeper, the movable block 5 will contact the workpiece before the limit surface 32, and will be blocked by the workpiece and will not move forward. As the drill bit continues to drill, the movable block 5 will continue to move forward. In this process, it is equivalent to the movable block 5 moving upward to the end position relative to the limit surface 32. Finally, the movable block will collide with the workpiece. At this time, the movable block 5 enters the end position, so that the warning component is triggered, thereby emitting sound or light to remind the user; compared with the traditional method that relies on human perception, emitting sound or light to remind the user is undoubtedly more intuitive.

[0037] The specific structure of the sensing unit can be: Figure 5 As shown, the sensing unit includes a power supply circuit for supplying power to the alarm component 43, and the power supply circuit includes two terminals 41 and a conductive sheet 42. There is an open circuit between the two terminals 41, and the power supply circuit is turned on when the two terminals 41 are connected. The conductive sheet 42 is used to contact the two terminals 41 at the same time to connect the two terminals 41. At this time, the two terminals 41 and the conductive sheet 42 are equivalent to a switch that controls whether the power supply circuit is turned on or not. When the conductive sheet 42 is out of contact with any of the terminals 41, the switch is in a disconnected state, thereby making the power supply circuit in an open circuit state, and thus making the alarm component 43 unable to get electricity to work.

[0038] When the conductive sheet 42 is connected to the two terminals 41 at the same time, it is equivalent to a switch being closed, and the power supply circuit is turned on, so that the alarm component 43 is powered and works.

[0039] like Figure 4 As shown, the two terminals 41 are arranged at the bottom of the groove 33, and the conductive sheet 42 is arranged at the top of the movable block 5; at the end position, the conductive sheet 42 is in contact with the two terminals 41 at the same time.

[0040] So, in the initial position, if Figure 5 As shown, the conductive sheet 42 is in a state of being separated from the two terminals 41. As the drill bit goes deeper, the movable block 5 will eventually enter the terminal position. At this time, the conductive sheet 42 will contact the two terminals 41, thereby turning on the power supply circuit, causing the warning component 43 to send out a warning signal to remind the user.

[0041] Among them, the power supply circuit includes a mobile power supply 40, such as a battery, and the mobile power supply 40 is arranged on at least one of the installation part 1, the connecting part 2, and the limiting part 3. In this embodiment, it is specifically shown that the mobile power supply 40 is installed on the connecting part 2, and the entire power supply circuit is powered by the mobile power supply 40.

[0042] The limiting mechanism also includes an elastic component, which includes a spring 62 and a guide rod 61. The guide rod 61 is vertically movably arranged in the limiting portion 3 at the position of the groove 33. The lower end of the guide rod 61 is fixed to the movable block 5, and the upper end extends out of the limiting portion 3. The spring 62 is sleeved on the guide rod 61, and one end of the spring 62 is fixed to the upper end of the guide rod 61, and the other end is fixed to the limiting portion 3; in this embodiment, the spring 62 is a tension spring structure, and the spring 62 is used to provide elastic force so that the movable block 5 has a tendency to move to the initial position, that is, when the movable block 5 is not subjected to external force, the spring 62 applies a downward pulling force to the guide rod 61, so that the guide rod 61 drives the movable block 5 to move downward and finally makes the movable block 5 in the initial position, and after the movable block 5 is against the workpiece, as the drilling deepens, the movable block 5 will overcome the elastic force of the spring 62 and move upward relative to the limiting surface and finally enter the terminal position.

[0043] In order to adjust the drilling depth as needed, the connecting portion 2 in this embodiment is a telescopic adjustable structure, specifically:

[0044] like Figure 1 As shown, the connecting portion 2 includes a fixed rod 21 and a movable rod 22, and the movable rod 22 is arranged on the fixed rod 21 and can slide relative to the fixed rod 21; the fixed rod 21 is installed on the mounting portion 1, and the movable rod 22 is fixed to the limiting portion 3. A bolt 221 for locking the relative positions of the fixed rod 21 and the movable rod 22 is provided between the fixed rod 21 and the movable rod 22. Specifically, the bolt 221 is threadedly connected to the movable rod 22. When the bolt 221 is tightened, the inner end of the bolt 221 is tightly pressed against the inner end of the fixed rod 21, thereby locking the movable rod 22 relative to the fixed rod 21.

[0045] In addition, due to the existence of the limiting portion 3 and the connecting portion 2, a certain degree of obstruction will be formed around the drill bit, which is not conducive to cleaning or replacing the drill bit. Therefore, in this embodiment, the connecting portion 2 is hinged on the mounting portion 1, and a locking member for locking the connecting portion 2 is provided between the mounting portion 1 and the connecting portion 2. In this way, when it is necessary to clean or replace the drill bit, the locking member can be unlocked first, and then the connecting portion 2 can be turned up to move it away from the drill bit position together with the limiting portion 3 to avoid blocking the drill bit.

[0046] The locking member includes a screw rod 212 and a nut 213, wherein the screw rod 212 is fixed to the mounting portion 1, and a waist-shaped hole 211 for the screw rod 212 to pass through is provided on the connecting portion 2 at a position corresponding to the screw rod 212, and the nut 213 is used to threadably cooperate with the screw rod 212 to press the connecting portion 2 against the mounting portion 1. When the connecting portion 2 needs to be turned over, the nut 213 can be unscrewed, and without the restriction of the nut 213, the connecting portion 2 can be turned over.

[0047] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An inductive limit mechanism for a punching device, comprising a mounting portion, a connecting portion and a limit portion, wherein the mounting portion is used to be mounted on the punching device, the limit portion is connected to the mounting portion through the connecting portion, and the bottom wall of the limit portion is horizontally arranged to form a limit surface, characterized in that: The limiting surface is provided with a groove, in which a movable block is provided which can move vertically between an initial position and an end position relative to the limiting surface, wherein in the initial position, the movable block at least partially extends out of the limiting surface, and in the end position, the bottom wall of the movable block is flush with the limiting surface; the limiting mechanism also includes a sensing unit, which includes an alarm component, wherein the sensing unit is configured such that when the movable block is in the end position, the alarm component sends a warning signal, wherein the warning signal includes a visible light signal and / or a sound signal.

2. The induction limit mechanism of a punching device according to claim 1, characterized in that: The sensing unit includes a power supply circuit for supplying power to the alarm component, the power supply circuit includes two terminals and a conductive sheet, there is an open circuit between the two terminals, and when the two terminals are connected, the power supply circuit is turned on, and the conductive sheet is used to contact the two terminals at the same time to connect the two terminals; the two terminals are arranged at the bottom of the groove, and the conductive sheet is arranged at the top of the movable block; at the end position, the conductive sheet is in contact with the two terminals at the same time.

3. The induction limit mechanism of a punching device according to claim 1 or 2, characterized in that: The warning component includes a buzzer and / or an indicator light.

4. The induction limit mechanism of a punching device according to claim 2, characterized in that: The power supply circuit includes a mobile power source, and the mobile power source is arranged on at least one of the mounting portion, the connecting portion, and the limiting portion.

5. The induction limit mechanism of a punching device according to claim 2, characterized in that: The limiting mechanism also includes an elastic component, which includes a spring and a guide rod. The guide rod is vertically movably arranged in the limiting part at the groove position. The lower end of the guide rod is fixed to the movable block, and the upper end extends out of the limiting part. The spring is sleeved on the guide rod, and one end of the spring is fixed to the upper end of the guide rod, and the other end is fixed to the limiting part; the spring is used to provide elastic force to make the movable block have a tendency to move toward the initial position.

6. The induction limit mechanism of a punching device according to claim 1, characterized in that: The connecting portion is a telescopic and adjustable structure.

7. The induction limit mechanism of the punching device according to claim 6, characterized in that: The connecting part includes a fixed rod and a movable rod, the movable rod is arranged on the fixed rod and can slide relative to the fixed rod; the fixed rod is installed on the installation part, the movable rod is fixed to the limiting part, and a bolt for locking the relative positions of the fixed rod and the movable rod is provided between the fixed rod and the movable rod.

8. The induction limit mechanism of a punching device according to claim 1, characterized in that: The connecting portion is hinged on the mounting portion, and a locking piece for locking the connecting portion is provided between the mounting portion and the connecting portion.

9. The induction limit mechanism of the punching device according to claim 8, characterized in that: The locking member includes a screw and a nut. The screw is fixed on the mounting portion. A waist-shaped hole for the screw to pass through is provided on the connecting portion corresponding to the position of the screw. The nut is used to cooperate with the screw thread to press the connecting portion onto the mounting portion.

10. The induction limit mechanism of a punching device according to claim 1, characterized in that: An opening for the drill bit to pass vertically is formed at one end of the limiting portion away from the connecting portion.

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