Semi-automatic magazine ejector

Abstract

The invention discloses a semi-automatic magazine ejector, comprising a frame and a magazine positioning mechanism, a magazine detection mechanism, a drill ejector mechanism and a cylinder control system arranged thereon, wherein the magazine positioning mechanism comprises a left magazine positioning seat, a right magazine positioning seat and a magazine positioning plate; the magazine detection mechanism comprises a pneumatic stroke switch, the drill ejector mechanism comprises a cylinder, a cylinder connecting plate, an ejector plate, a movable plate and an ejector, and the cylinder control system comprises a control valve, an air-controlled valve, a second stroke switch and a stroke block, and the control valve, the air-controlled valve and the second stroke switch are connected in series with the pneumatic stroke switch to form a safety interlock mechanism. The safety interlock mechanism automatically resets the device when the magazine is not installed in place or the ejector mechanism is not in the initial position, or when the operation is erroneous, and the work cannot be started, thereby avoiding quality and safety accidents; at the same time, after the drill is ejected from the magazine, the ejector mechanism automatically returns to the initial position without manual operation, thereby reducing the difficulty of operation and improving production efficiency.

Description

Technical Field

[0001] The invention relates to a needle withdrawal machine, in particular to a semi-automatic magazine needle withdrawal machine, which is suitable for withdrawing carbide tools in magazines in the PCB industry and withdrawing other tools. Background Art

[0002] The carbide processing tools such as drill needles used in PCB board drilling are generally installed in a magazine and then installed on the drilling machine. When the drilling is completed, the carbide tools such as drill needles need to be taken out of the magazine so that the drill needles can be re-grinded or the broken drill needles can be replaced for the next drilling.

[0003] At present, the drill needle is generally removed from the magazine by manual extraction, which is not only inefficient, but also uneven in force, which is prone to needle breakage and work-related injuries. There are also a few automatic extraction devices, but the equipment is generally expensive, large in size and high in cost. Summary of the invention

[0004] In order to overcome the above defects, the present invention provides a semi-automatic magazine needle ejector, which is not only simple in structure and easy to operate, but also highly efficient, low in cost, and not prone to quality and safety problems.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a semi-automatic magazine needle ejection machine, comprising a frame consisting of an upper base plate, a lower base plate and a guide column located between the upper base plate and the lower base plate, and the frame is provided with a magazine positioning mechanism, a magazine detection mechanism, a drill needle ejection mechanism and a cylinder control system, wherein:

[0006] The magazine positioning mechanism comprises a left magazine positioning seat, a right magazine positioning seat and a magazine positioning plate, the left magazine positioning seat and the right magazine positioning seat are spaced and symmetrically fixed on the upper bottom plate of the frame, a magazine positioning channel for magazine placement is formed between the left magazine positioning seat and the right magazine positioning seat, the magazine positioning plate is fixedly arranged outside the exit end of the magazine positioning channel, and a through hole is arranged on the upper bottom plate corresponding to the magazine positioning channel;

[0007] The magazine detection mechanism includes a pneumatic travel switch, which is arranged on the upper bottom plate of the frame and has a trigger end located at the front side of the magazine positioning plate. When the magazine is placed in the magazine positioning channel and pushed to abut against the magazine positioning plate to the installation position, the magazine triggers the trigger end of the pneumatic travel switch to turn on the pneumatic travel switch.

[0008] The drill pin ejection mechanism comprises a cylinder, a cylinder connecting plate, an ejector plate, a movable plate and a plurality of ejectors fixed on the ejector plate, the base of the cylinder is fixed to the lower bottom plate of the frame, the piston rod of the cylinder is fixedly connected to the ejector plate and the movable plate through the cylinder connecting plate, the movable plate is movably positioned on the guide column, and a plurality of ejectors pass through the movable plate and are correspondingly arranged below the through hole;

[0009] The cylinder control system includes a control valve, an air-controlled valve, a second travel switch and a travel block. The control valve, the air-controlled valve and the second travel switch are connected in series with the pneumatic travel switch. The travel block is fixed on the movable plate. The second travel switch is arranged on the lower side of the upper base plate. When the drill bit ejection mechanism moves to the drill bit fully ejected position, the travel block triggers the second travel switch to disconnect, the air-controlled valve is exhausted and reset, and the cylinder is reversed and reset.

[0010] As a further improvement of the present invention, the upper side surfaces of the left magazine locating seat and the right magazine locating seat extend toward each other to form a left upper limit and a right upper limit respectively.

[0011] As a further improvement of the present invention, the movable plate is movably connected to the guide column via a linear bearing.

[0012] As a further improvement of the present invention, there are four guide pillars, which are arranged between the four corners of the upper base plate and the lower base plate.

[0013] As a further improvement of the present invention, the air-controlled valve is a two-position five-way valve.

[0014] As a further improvement of the present invention, a protective plate is provided below the upper bottom plate to surround the movable plate and the ejector plate.

[0015] The beneficial effects of the present invention are as follows: the cylinder control system and the magazine detection mechanism of the semi-automatic magazine needle extraction machine form a safety interlock mechanism. When the magazine is not installed properly or the ejection mechanism is not in the initial position, or when there is an error in operation, the device will automatically reset and cannot start working, thereby avoiding quality accidents and safety accidents; at the same time, after the drill needle is ejected from the magazine, the ejection mechanism automatically returns to the initial position, without manual operation, reducing the difficulty of operation and improving production efficiency. In short, the semi-automatic magazine needle extraction machine does not require manual extraction, avoids manual extraction, needle breakage and industrial accidents caused by uneven force, and has the advantages of simple structure, convenient operation, low cost, full pneumatic control of the whole machine, no power supply required, safe and reliable operation, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0017] Figure 2 It is a side view of the present invention;

[0018] Figure 3 A top view of the present invention;

[0019] Figure 4 This is a circuit schematic diagram of the cylinder control system of the present invention.

[0020] Combined with the attached drawings, the following description is given:

[0021] 100——magazine; 11——lower base plate;

[0022] 12——guide column; 13——upper base plate;

[0023] 21——Left magazine positioning seat; 22——Right magazine positioning seat;

[0024] 23——Magazine positioning plate; 24——Magazine positioning channel;

[0025] 25——through hole; 3——pneumatic travel switch;

[0026] 31——touch end; 41——cylinder;

[0027] 42——cylinder connecting plate; 43——thrust plate;

[0028] 44——movable plate; 45——thimble;

[0029] 46——Linear bearing; 51——Control valve;

[0030] 52——air control valve; 53——second stroke switch;

[0031] 54——travel stopper; 101——drill needle;

[0032] 14——Protective plate. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0034] See also Figure 1-4 , is a semi-automatic magazine needle ejection machine described in the present invention, comprising a frame consisting of an upper base plate 13, a lower base plate 11 and a guide column 12 located between the upper base plate and the lower base plate, and the frame is provided with a magazine positioning mechanism, a magazine detection mechanism, a drill needle ejection mechanism and a cylinder control system.

[0035] The magazine positioning mechanism includes a left magazine positioning seat 21, a right magazine positioning seat 22 and a magazine positioning plate 23. The left magazine positioning seat 21 and the right magazine positioning seat 22 are spaced apart and symmetrically fixed on the upper base plate 13 of the frame. A magazine positioning channel 24 for inserting a magazine 100 is formed between the left magazine positioning seat 21 and the right magazine positioning seat 22. The magazine positioning plate 23 is fixed outside the exit end of the magazine positioning channel 24. A through hole 25 is provided on the upper base plate 13 corresponding to the magazine positioning channel 24.

[0036] The magazine detection mechanism includes a pneumatic travel switch 3, which is arranged on the upper base plate 13 of the frame and its touch end 31 is located at the front side of the magazine positioning plate 23. When the magazine 100 is placed in the magazine positioning channel 24 and pushed to abut against the magazine positioning plate 23 to the installation position, the magazine 100 touches the touch end 31 of the pneumatic travel switch 3 to turn on the pneumatic travel switch 3.

[0037] The drill pin ejection mechanism includes a cylinder 41, a cylinder connecting plate 42, an ejector plate 43, a movable plate 44 and a plurality of ejector pins 45 fixed on the ejector plate. The base of the cylinder 41 is fixed on the lower bottom plate 11 of the frame. The piston rod of the cylinder is fixedly connected to the ejector plate 43 and the movable plate 44 through the cylinder connecting plate 42. The movable plate 44 is movably positioned on the guide column 12. The plurality of ejector pins 45 pass through the movable plate and are correspondingly arranged below the through hole 25.

[0038] The cylinder control system includes a control valve 51, an air control valve 52, a second travel switch 53 and a travel block 54. The control valve 51, the air control valve 52 and the second travel switch 53 are connected in series with the pneumatic travel switch 3. The travel block 54 is fixed on the movable plate 44. The second travel switch 53 is provided on the lower side of the upper base plate 13. When the drill bit ejection mechanism moves to the drill bit fully ejected position, the travel block 54 triggers the second travel switch 53 to disconnect, the air control valve 52 is exhausted and reset, and the cylinder is reversed and reset.

[0039] Furthermore, the upper side surfaces of the left magazine locating seat 21 and the right magazine locating seat 22 extend toward each other to form a left upper limit and a right upper limit respectively; the movable plate 44 is movably connected to the guide column 12 through a linear bearing 46; there are four guide columns 12, which are arranged between the four corners of the upper base plate and the lower base plate; the air control valve 52 is a two-position five-way valve; a protective plate 14 is provided around the lower part of the upper base plate to surround the movable plate and the ejector plate.

[0040] The working process of this semi-automatic magazine ejector is as follows:

[0041] First, the magazine 100 that needs to be withdrawn is installed on the magazine positioning seat provided on the upper base plate 13, that is, the magazine 100 is inserted into the magazine positioning channel 24 formed between the left magazine positioning seat 21 and the right magazine positioning seat 22, and is pushed to the magazine positioning plate 23 for positioning. During the pushing process, the magazine 100 simultaneously pushes the touch end 31 of the pneumatic travel switch 3, so that the pneumatic travel switch 3 is turned on. Since the pneumatic travel switch 3 is connected in series in the cylinder control system, only when the pneumatic travel switch 3 is turned on, can the cylinder control system be started, that is, the control valve 51, the pneumatic control valve 52 and the second travel switch 53 are connected.

[0042] Secondly, press the control button of the control valve 51 and then release it. The compressed air enters the control end of the air control valve 52 from the control valve 51 through the pneumatic stroke switch 3 of the magazine detection mechanism and the second stroke switch 53, opens the main air path of the air control valve 52, and the compressed air enters the lower end of the cylinder 41 from the main air path of the air control valve 52, pushing the piston, and the entire drill needle ejection mechanism moves upward to eject the drill needle. When the drill needle cylinder rises to the set position, that is, when the drill needle completes the ejection position, the stroke block 54 installed on the movable plate 44 pushes the second stroke switch 53 to operate, unloading the control system air source pressure, and the air control valve 52 returns to the initial state. The cylinder inlet and outlet directions are reversed, the piston returns downward, and the entire drill needle ejection mechanism returns downward to the initial state. The magazine is taken out with the right hand, and the needle withdrawal process is completed.

[0043] In the semi-automatic magazine needle ejector, the pneumatic travel switch 3 of the magazine detection mechanism is connected in series with the control valve 51, the pneumatic control valve 52 and the second travel switch 53 in the control system in the same air circuit to form a safety interlock mechanism, that is, only when the magazine is installed in place, the pneumatic travel switch 3 is triggered to open, and at this time, the button of the control valve 51 can start the main air circuit of the pneumatic control valve 52 to supply air to the cylinder 41. When the magazine is withdrawn from the installation position or is not installed in place, the pneumatic travel switch 3 is in a disconnected state, and at this time, the button of the control valve 51 cannot start the main air circuit of the pneumatic control valve 52.

[0044] A second travel switch 53 and a travel block 54 are also provided in the semi-automatic magazine needle removal machine. The travel block 54 moves synchronously with the movable plate 44, i.e., the ejection mechanism. When the ejection mechanism moves to the set position, the travel block 54 simultaneously triggers the second travel switch 53, so that the second travel switch 53 is disconnected, the air source pressure of the control system is released, and the cylinder 41 automatically resets to the initial position without manual operation, thereby reducing the difficulty of operation and improving production efficiency.

[0045] In addition, the upper side surfaces of the left magazine positioning seat 21 and the right magazine positioning seat 22 extend toward each other to form a left upper limit and a right upper limit, respectively, to limit the upper side surface of the magazine inserted into the magazine positioning channel, so as to ensure that the magazine position is fixed when the needle is withdrawn, and the ejector pin can smoothly eject the drill needle 101.

[0046] It can be seen that the cylinder control system and magazine detection mechanism of the semi-automatic magazine needle extraction machine form a safety interlock mechanism. When the magazine is not installed properly or the ejection mechanism is not in the initial position, or when it is misoperated, the equipment will automatically reset and cannot start working, avoiding quality accidents and safety accidents. At the same time, after the drill needle is ejected from the magazine, the ejection mechanism automatically returns to the initial position without manual operation, reducing the difficulty of operation and improving production efficiency. In short, the semi-automatic magazine needle extraction machine does not require manual extraction, avoiding manual extraction, needle breakage and work-related injuries caused by uneven force, and has the advantages of simple structure, easy operation, low cost, full pneumatic control of the whole machine, no power supply required, and safe and reliable operation.

[0047] Many specific details are described in the above description to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited to the specific implementation disclosed above. At the same time, any person familiar with the art can make many possible changes and modifications to the technical solution of the present invention using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. A semi-automatic magazine needle extraction machine, comprising a frame consisting of an upper base plate (13), a lower base plate (11) and a guide post (12) located between the upper base plate and the lower base plate, characterized in that: The frame is provided with a magazine positioning mechanism, a magazine detection mechanism, a drill needle ejection mechanism and a cylinder control system, wherein: The magazine positioning mechanism comprises a left magazine positioning seat (21), a right magazine positioning seat (22) and a magazine positioning plate (23); the left magazine positioning seat (21) and the right magazine positioning seat (22) are fixed on the upper bottom plate (13) of the frame at intervals and symmetrically; a magazine positioning channel (24) for inserting a magazine (100) is formed between the left magazine positioning seat (21) and the right magazine positioning seat (22); the magazine positioning plate (23) is fixedly arranged outside the outlet end of the magazine positioning channel (24); and a through hole (25) is provided on the upper bottom plate (13) corresponding to the magazine positioning channel (24); The magazine detection mechanism comprises a pneumatic travel switch (3), the pneumatic travel switch (3) being arranged on the upper bottom plate (13) of the frame and having a trigger end (31) located at the front side of the magazine positioning plate (23); when the magazine (100) is placed in the magazine positioning channel (24) and pushed to abut against the magazine positioning plate (23) to the installation position, the magazine (100) triggers the trigger end (31) of the pneumatic travel switch (3) to turn on the pneumatic travel switch (3); The drill pin ejection mechanism comprises a cylinder (41), a cylinder connecting plate (42), an ejector plate (43), a movable plate (44) and a plurality of ejector pins (45) fixed on the ejector plate, the base of the cylinder (41) is fixed on the lower bottom plate (11) of the frame, the piston rod of the cylinder is fixedly connected to the ejector plate (43) and the movable plate (44) through the cylinder connecting plate (42), the movable plate (44) is movably positioned on the guide column (12), and the plurality of ejector pins (45) pass through the movable plate and are correspondingly arranged below the through hole (25); The cylinder control system comprises a control valve (51), an air control valve (52), a second travel switch (53) and a travel stopper (54); the control valve (51), the air control valve (52) and the second travel switch (53) are connected in series with the pneumatic travel switch (3); the travel stopper (54) is fixed on the movable plate (44); the second travel switch (53) is arranged on the lower side of the upper base plate (13); when the drill bit ejection mechanism moves to the drill bit fully ejected position, the travel stopper (54) triggers the second travel switch (53) to disconnect, the air control valve (52) is exhausted and reset, and the cylinder is reversed and reset.

2. The semi-automatic magazine needle removal machine according to claim 1, characterized in that: The upper side surfaces of the left magazine positioning seat (21) and the right magazine positioning seat (22) extend towards each other to form a left upper limit and a right upper limit respectively.

3. The semi-automatic magazine needle extraction machine according to claim 2, characterized in that: The movable plate (44) is movably connected to the guide column (12) via a linear bearing (46).

4. The semi-automatic magazine needle extraction machine according to claim 3, characterized in that: There are four guide pillars (12) arranged between the four corners of the upper base plate and the lower base plate.

5. The semi-automatic magazine needle extraction machine according to claim 1, characterized in that: The air-controlled valve (52) is a two-position five-way valve.

6. The semi-automatic magazine needle extraction machine according to claim 1, characterized in that: A protective plate (14) is arranged below the upper bottom plate to surround the movable plate and the ejector plate.

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