A device for detecting in-mold tapping taps

Abstract

The invention discloses an in-mold tapping tap detection device. The detection can be performed by connecting a tap displacement sensor device and a tap induction device with a flexible shaft, and installing a sensing head at a detection position in the mold. At this time, the tap displacement sensor device is located in the mold, and other parts are arranged outside the mold. When the tap is tapped downward, the sensing head of the tap displacement sensor device is pressed, and the sensing head is transmitted to the flexible shaft through a transmission mechanism. The flexible shaft pulls the induction trigger mechanism to trigger the sensing switch, so that the sensing switch is turned on. The signal is sent to the control system of the tapping or punching machine through the sensing switch, so that the sensing switch can be non-contacted. The induction switch is easy to install and maintain in the stamping mold, and the stability of the broken tap detection is improved. Since the tap displacement sensor device is a pure mechanical structure, and a dustproof ring is arranged between the sensing head and the shell, it can not only effectively prevent processing debris and lubricating oil from entering the inside of the tap sensor device, but also effectively prevent dust, oil and water, and ensure the detection stability.

Description

Technical Field

[0001] The invention relates to the field of detection devices, in particular to an in-mold tapping tap detection device. Background Art

[0002] When using existing technology to automatically tap metal stamping parts in the mold, due to the broken taps caused by inadequate feeding, tapping may be missed or not in place, which will cause great waste in the next process. How to avoid missing tapping has always been a difficult problem.

[0003] The detection device currently used is to install a sensor directly below the tapping hole, such as a micro switch, proximity switch, photoelectric switch, etc., and use the sensor to determine whether the tapping is missed or not in place. The in-mold tapping machine is installed in the stamping die. Due to the complex structure of the mold, the space for installing the broken tap detection sensor is small and is restricted by various mechanisms. In addition, oil or emulsion is required to lubricate and cool the tap during the tapping process. There are also factors such as stamping oil, metal dust, and mechanical vibration that are not conducive to detection. Therefore, this requires the sensor head to be small in size and easy to install. It also needs to be oil-proof, waterproof, dust-proof, and vibration-proof, and the wiring installation is convenient.

[0004] However, the existing detection devices currently either have a shape and installation method that are not suitable for installation in molds, or the sensors are easily triggered by mistake or fail, or even short-circuited and damaged after coming into contact with substances such as oil, metal dust, etc., and the detection effect is far from meeting the actual application requirements. Summary of the invention

[0005] In order to solve the above problems, the present invention provides an in-mold tapping tap detection device which is easy to install, dustproof, waterproof, oil-proof, has accurate sensing, and has stable detection.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: an in-mold tapping tap detection device, comprising a tap displacement sensor device, a tap induction device, and a hose, wherein the tap displacement sensor device comprises a housing, a sensing head, a dust ring, a transmission mechanism, and a flexible shaft; the tap induction device comprises a fixed seat, a sensing switch, a sensing trigger mechanism, and a reset spring; one end of the hose is connected to the housing, and the other end of the hose is connected to the fixed seat; the upper end of the sensing head is arranged outside the housing, and the lower end thereof extends into the housing; the dust ring is arranged below the sensing head and outside the housing; the transmission mechanism is arranged in the housing, and the transmission input end of the transmission mechanism is connected to the lower end of the sensing head, and the transmission output end is connected to one end of the flexible shaft; the other end of the flexible shaft extends along the hose to the outside of the fixed seat and is fixedly connected to the sensing trigger mechanism; the reset spring is sleeved on the surface of the flexible shaft, and one end thereof abuts against the surface of the hose, and the other end abuts against the surface of the sensing trigger mechanism; the sensing head is pressed downward and transmitted to the flexible shaft through the transmission mechanism, and the flexible shaft pulls the sensing trigger mechanism to move in the direction of the sensing switch to trigger the sensing switch, so that the sensing switch is turned on.

[0007] Specifically, the transmission mechanism is a connecting rod, which is arranged in the vertical direction. The upper end of the connecting rod is rotatably fixed in the outer shell and one side of the connecting rod is provided with an extension portion inclined downward in the horizontal direction. The extension portion is provided with a groove. The lower end of the sensor head is arranged in the groove. The lower end of the sensor head is also provided with a sliding column, which is attached to the upper surface of the groove of the extension portion. The lower end of the connecting rod is fixedly connected to the flexible shaft.

[0008] Specifically, a limiting portion is further provided at the bottom end of the sensing head, and the limiting portion is located below the extending portion.

[0009] Specifically, an adjusting screw is provided at the connection between the hose, the housing and the fixing seat.

[0010] Specifically, the inductive switch is a micro switch, the inductive trigger mechanism is a cam, and the flexible shaft pulls the cam to contact the micro switch to turn on the micro switch.

[0011] Specifically, the induction switch is an electromagnetic induction switch, the induction trigger mechanism is a magnet, and the flexible shaft pulls the magnet to move along the direction of the electromagnetic induction switch to turn on the electromagnetic induction switch.

[0012] The beneficial effects of the present invention are as follows: the present invention connects the tap displacement sensor device and the tap induction device with a flexible shaft, and installs the induction head at the detection position in the mold for detection. At this time, only the tap displacement sensor device is located in the mold, and the other parts are arranged outside the mold. When the tap is tapped downward, the induction head of the tap displacement sensor device is pressed, and the induction head is transmitted to the flexible shaft through the transmission mechanism. The flexible shaft pulls the induction trigger mechanism to trigger the induction switch, so that the induction switch is turned on. The signal can be sent to the control system of the tapping equipment or the punching machine through the induction switch, so as to realize non-contact detection of broken taps by the induction switch, facilitate installation and maintenance in the stamping die, and improve the stability of broken tap detection. Since the tap displacement sensor device is a purely mechanical structure, and a dustproof ring is arranged between the induction head and the shell, it can effectively prevent processing debris and lubricating oil from entering the interior of the tap sensor device, and can effectively prevent dust, oil and water, thereby ensuring the normal use of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a perspective view of the present invention.

[0014] Figure 2 It is the front view of the present invention.

[0015] Figure 3 It is a schematic diagram of the connection of the transmission mechanism in the housing of the present invention.

[0016] Figure 4 It is a schematic diagram of the connection of the return spring in the fixing seat of the present invention.

[0017] Explanation of the accompanying figures: 1. Tap displacement sensor device; 2. Fixed seat; 3. Flexible shaft; 4. Housing; 5. Sensing head; 6. Dust ring; 7. Transmission mechanism; 8. Sensing trigger mechanism; 9. Sensing switch; 10. Tap sensing device; 11. Hose; 12. Adjusting screw; 13. Reset spring; 14. Extension part; 15 Sliding column; 16. Limiting part. DETAILED DESCRIPTION

[0018] See also Figure 1-4As shown, the present invention relates to an in-mold tapping tap detection device, including a tap displacement sensor device 1, a tap induction device 10, and a hose 11, wherein the tap displacement sensor device 1 includes a housing 4, a sensing head 5, a dust ring 6, a transmission mechanism 7, and a flexible shaft 3; the tap induction device 10 includes a fixing seat 8, a sensing switch 9, a sensing trigger mechanism 8, and a reset spring 13; one end of the hose 11 is connected to the housing 4, and the other end of the hose 11 is connected to the fixing seat 2; the upper end of the sensing head 5 is arranged outside the housing 4, and the lower end thereof extends into the housing 4; the dust ring 6 is arranged below the sensing head 5 and is located Outside the shell 4, the transmission mechanism 7 is arranged inside the shell 4 and the transmission input end of the transmission mechanism 7 is connected to the lower end of the sensor head 5, and the transmission output end is connected to one end of the flexible shaft 3. The other end of the flexible shaft 3 extends along the hose 11 to the outside of the fixed seat 2 and is fixedly connected to the induction trigger mechanism 8. The reset spring 13 is sleeved on the surface of the flexible shaft 3, and one end thereof abuts against the surface of the hose 11, and the other end abuts against the surface of the induction trigger mechanism 8; the sensor head 5 is pressed downward and transmitted to the flexible shaft 3 through the transmission mechanism 7, and the flexible shaft 3 pulls the induction trigger mechanism 8 to move in the direction of the induction switch 9 to trigger the induction switch 9, so that the induction switch 9 is turned on.

[0019] Compared with the prior art, the present invention uses a flexible shaft 13 to connect the tap displacement sensor device 1 and the tap induction device 10, and the induction head 5 is installed at the detection position in the mold for detection. At this time, only the tap displacement sensor device 10 is arranged in the mold, and the other parts are arranged outside the mold. When the tap tapping moves downward, the induction head 5 of the tap displacement sensor device is pressed, which is transmitted to the flexible shaft 3 through the transmission mechanism 7. The flexible shaft 3 pulls the induction trigger mechanism to trigger the induction switch 9, so that the induction switch 9 is turned on. The signal can be sent to the control system of the tapping equipment or the punching machine through the induction switch 9, so that the induction switch 9 can detect the broken tap in a non-contact manner, which is convenient for installation and maintenance in the stamping die, and improves the stability of the broken tap detection. Since a reset spring 13 is provided between the induction trigger mechanism 8 and the hose 11, when the flexible shaft 3 pulls the induction trigger mechanism 8 to move toward the induction switch 9, the reset spring 13 will be compressed. If the tapping of the tap is completed, the tap turns to move upward, and the induction head 5 is not compressed. At this time, the compressed reset spring 13 begins to reset due to the elastic force, pushing the induction trigger mechanism 8 to move away from the induction switch 9, and transmitting it to the transmission mechanism 7 through the flexible shaft 3, so that the induction head 5 is reset, and a dust ring 6 is provided between the induction head 5 and the housing 4, which can effectively prevent processing debris and lubricating oil from entering the inside of the tap displacement sensor device, and can effectively prevent dust, oil and water, and ensure the normal use of the equipment.

[0020] Specifically, the transmission mechanism 7 is a connecting rod, which is arranged in the vertical direction. The upper end of the connecting rod is rotatably fixed in the outer shell 4 and one side of the connecting rod is provided with an extension portion 14 inclined downward in the horizontal direction. The extension portion 14 is provided with a groove. The lower end of the sensor head 5 is arranged in the groove. The lower end of the sensor head 5 is also provided with a sliding column 15. The sliding column 15 is attached to the upper surface of the groove of the extension portion 14, and the lower end of the connecting rod is fixedly connected to the flexible shaft 3.

[0021] By adopting the above scheme, the lower end of the sensing head 5 is arranged in the groove of the extension part 14, which can ensure that the sensing head 5 and the connecting rod are not disconnected during the use of the tap displacement sensor device 1, and a sliding column 15 is arranged at the lower end of the sensing head 5, and the sliding column 15 is in contact with the upper surface of the groove of the extension part 14, further ensuring the normal and sensitive operation of the tap displacement sensor device 1; when the sensing head 5 is compressed, it will move downward, and at this time the sliding column 15 will drive the extension part 14 to move downward, and the lower end of the connecting rod will move away from the extension part 14, driving the induction trigger mechanism 8 fixed to the other end of the flexible shaft 3 to move toward the induction switch 9; when the induction switch sends a signal to the control system of the tapping equipment, the tap turns to move upward, and the sensing head 5 is not compressed. At this time, the compressed reset spring 13 begins to reset due to the elastic force, pushing the induction trigger mechanism 8 to move away from the induction switch 9, and the lower end of the connecting rod is displaced toward the extension part 14, and the sensing head 5 is also displaced upward due to the transmission relationship until it is finally reset.

[0022] Specifically, a limiting portion 16 is further provided at the bottom end of the sensing head 5 , and the limiting portion 16 is located below the extending portion 14 .

[0023] With the above solution, a limit portion 16 is provided at the lower end of the sensing head 5 to prevent the sensing head from being separated from the transmission mechanism 7 when the tap sensor 1 is reset.

[0024] Specifically, an adjusting screw 12 is provided at the connection between the hose 11 and the housing 4 and the fixing seat 2 .

[0025] By adopting the above solution, an adjusting screw 12 is provided at the connection between the hose 11 and the housing 4 and the fixing seat 2, which is conducive to finely adjusting the tightness of the flexible shaft 3 in the hose 11 and ensuring sensitive and accurate transmission of the tap sensing device 10.

[0026] Specifically, the induction switch 9 is a micro switch, the induction trigger mechanism 8 is a cam, and the flexible shaft 3 pulls the cam to contact the micro switch to turn on the micro switch.

[0027] Adopting the above scheme, in this embodiment, a micro switch is used as the induction switch 9, and a cam is used as the induction trigger mechanism 8. When the tapping moves downward to a predetermined position, it continues to move downward, so that the induction head 5 is pressed downward (within 5 mm). The pressure of the induction head 5 is transmitted to the flexible shaft 3 through the transmission mechanism 7. The flexible shaft 3 pulls the cam to move in the direction of the micro switch until the tapping is in place. The cam will press the micro switch to make it conductive. The tapping control system or the punching machine control system can determine whether the tapping is in place by obtaining the signal of the micro switch. If the micro switch is not conductive at the predetermined position (usually the bottom dead point of the punching machine), it indicates that the tapping of the tap is abnormal, and corresponding actions such as emergency stop are taken.

[0028] Specifically, the induction switch 9 is an electromagnetic induction switch, the induction trigger mechanism 8 is a magnet, and the flexible shaft 3 pulls the magnet to move along the direction of the electromagnetic induction switch to turn on the electromagnetic induction switch.

[0029] Adopting the above scheme, in this embodiment, the induction switch 9 is an electromagnetic induction switch, and the magnet is the induction trigger mechanism 8. When the tapping moves downward to the predetermined position and continues to move downward, the induction head 5 is pressed downward (within 5 mm). The pressure of the induction head 5 is transmitted to the flexible shaft 3 through the sensor mechanism 7. The flexible shaft 3 pulls the magnet to move in the direction of the electromagnetic induction switch until the tapping is in place. The electromagnetic induction switch senses the magnetism of the magnet and then turns on. The tapping control system or the punching machine control system can determine whether the tapping is in place by obtaining the signal of the micro switch. If the micro switch is not turned on at the predetermined position (usually the bottom dead point of the punching machine), it indicates that the tapping of the tap is abnormal, and corresponding actions such as emergency stop are taken.

[0030] The above implementation modes are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. An in-mold tapping tap detection device, characterized in that: It includes a tap displacement sensor device, a tap induction device, and a hose, wherein the tap displacement sensor device includes a shell, a sensing head, a dust ring, a transmission mechanism, and a flexible shaft; the tap induction device includes a fixed seat, a sensing switch, a sensing trigger mechanism, and a reset spring; one end of the hose is connected to the shell, and the other end of the hose is connected to the fixed seat; the upper end of the sensing head is arranged outside the shell, and its lower end extends into the shell, the dust ring is arranged below the sensing head and outside the shell, the transmission mechanism is arranged in the shell, and the transmission input end of the transmission mechanism is connected to the lower end of the sensing head, and the transmission output end is connected to one end of the flexible shaft, the other end of the flexible shaft extends along the hose to the outside of the fixed seat and is fixedly connected to the sensing trigger mechanism, the reset spring is sleeved on the surface of the flexible shaft, and one end of the spring abuts against the surface of the hose, and the other end abuts against the surface of the sensing trigger mechanism; the sensing head is pressed downward and transmitted to the flexible shaft through the transmission mechanism, and the flexible shaft pulls the sensing trigger mechanism to move in the direction of the sensing switch to trigger the sensing switch, so that the sensing switch is turned on.

2. The in-mold tapping tap detection device according to claim 1, characterized in that: The transmission mechanism is a connecting rod, which is arranged in the vertical direction. The upper end of the connecting rod is rotatably fixed in the outer shell and one side of the connecting rod is provided with an extension portion inclined downward in the horizontal direction. The extension portion is provided with a groove. The lower end of the sensor head is arranged in the groove. The lower end of the sensor head is also provided with a sliding column, which is attached to the upper surface of the groove of the extension portion. The lower end of the connecting rod is fixedly connected to the flexible shaft.

3. The in-mold tapping tap detection device according to claim 2, characterized in that: A limiting portion is also provided at the bottom end of the sensing head, and the limiting portion is located below the extending portion.

4. The in-mold tapping tap detection device according to claim 1, characterized in that: The connection between the hose, the shell and the fixing seat is also provided with an adjusting screw.

5. The in-mold tapping tap detection device according to claim 1, characterized in that: The induction switch is a micro switch, the induction trigger mechanism is a cam, and the flexible shaft pulls the cam to contact the micro switch to turn on the micro switch.

6. The in-mold tapping tap detection device according to claim 1, characterized in that: The induction switch is an electromagnetic induction switch, the induction trigger mechanism is a magnet, and the flexible shaft pulls the magnet to move along the direction of the electromagnetic induction switch to turn on the electromagnetic induction switch.

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