Trigger mechanism, induction device and detection device

Abstract

The utility model discloses a trigger mechanism, an induction device and a detection device. The triggering mechanism comprises a base and a sensing assembly. The sensing assembly comprises a pivoting part rotationally connected to the base, the pivoting part is provided with a first end and a second end, the first end is configured to rotate around a pivoting axis under the pushing of gas, and the second end is configured to be separated from or contact with the switch unit to switch a circuit state when the first end rotates; the mass of the first end is larger than that of the second end so that the second end tends to move towards the switch unit. The lever structure rotating around the pivot axis is adopted, one end and the other end are pushed through gas to trigger signals, and after pushing of the gas is removed, the first end automatically droops and resets due to gravity and drives the second end to be forcibly separated from the switch unit, so that the clamping possibility is reduced, and the detection efficiency and the detection reliability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of pipe plug needle detection, especially to trigger mechanism, sensing device and detection device. BACKGROUND

[0002] Pipe plug needle automatic assembly is to add material into a feeding groove, drive corresponding tooling mold by air cylinder and belt to carry out feeding, gluing, drying, blocking detection, siliconization and discharging to complete automatic production process. In the production process, the needle seat and the needle tube are combined to form a pipe plug needle, and the medium channel formed in the needle tube and the needle seat needs to be detected.

[0003] In the related art, the detection device of the pipe plug needle comprises a blowing device, a sensing sheet a and a sensor b, the sensing sheet a is arranged in the sensor b in the vertical direction. The blowing device introduces gas into the medium channel of the pipe plug needle c, and the gas outlet end of the medium channel drives the sensing sheet to move upward to contact the sensor. However, the sensing sheet is a PVC material piece, which is light in weight and carries water vapor, and after the blowing is finished, it is easy to adhere to the sensor or be stuck, which causes the product to be misdetected and the equipment to frequently malfunction, increasing the working intensity of normal personnel. SUMMARY

[0004] The utility model aims at at least solves one of the prior art technical problems. For this reason, one purpose of the utility model is to provide a trigger mechanism, the first end is greater than the second end, after blowing, the first end is automatically reset due to gravity, so that the second end is forced to separate from the sensor, which is more reliable than linear extension and contraction and reduces the situation of being stuck.

[0005] The utility model first aspect embodiment provides a kind of trigger mechanism, and trigger mechanism includes base and sensing component. Sensing component includes the pivot piece of rotation connection in the base, the pivot piece has first end and second end, the first end is configured to rotate around pivot axis under the push of gas, the second end is configured to separate or contact switch unit when the first end rotates to switch circuit state;Wherein, the mass of the first end is greater than the second end to make the second end have the tendency of moving towards switch unit.

[0006] In some embodiments, the first end and the second end are respectively configured as a first circular plate and a second circular plate.

[0007] In some embodiments, the diameter of the first circular plate is D1, and 10mm≤D1≤14mm; the diameter of the second circular plate is D2, and 7mm≤D2≤9mm.

[0008] In some embodiments, the thickness of the first circular plate is 1.1mm~1.3mm, and the thickness of the second circular plate is 0.4mm~0.7mm.

[0009] In some embodiments, the first circular plate and the second circular plate are parallel to a horizontal direction; the pivot further has an oblique extension segment arranged between the first circular plate and the second circular plate, the oblique extension segment is arranged obliquely relative to a vertical direction and relative to the horizontal direction.

[0010] The second aspect of the utility model provides a kind of induction device, and induction device includes switch unit, control circuit and the trigger mechanism of the first aspect of the utility model;Switch unit is arranged on the movement path of the second end;Control circuit is configured as the contact state of the second end and the switch unit is switched on or off according to.

[0011] In some embodiments, the induction device further includes an information prompting unit;The information prompting unit is electrically connected to the control circuit, and is used to send a prompt information when the control circuit is connected.

[0012] The third aspect of the utility model provides a kind of detection device, and detection device includes fixed structure, blowing device and the induction device according to the second aspect of the utility model;Fixed structure is used to fix the piece to be detected;Blowing device is configured as blowing to the medium passage of the piece to be detected to drive the first end to rotate around the pivot shaft.

[0013] In some embodiments, the switch unit is arranged above the second end.

[0014] In some embodiments, the base has a positioning plate;Through hole is opened in the positioning plate, and the through hole passes through upper and lower surfaces;The first end covers the upper end opening of the through hole, and is configured to be lifted upward under the action of gas pressure;The fixed structure includes a clamping assembly, and the clamping assembly is arranged on the lower side of the positioning plate and has a clamping groove coaxially arranged with the through hole, and the clamping groove is used to fix the gas outlet end of the medium passage.

[0015] It can be seen from the technical scheme that the embodiments provided by the utility model have the following advantages:

[0016] (1) the lever structure rotating around pivot axis is used in the application, one end is pushed by gas, the other end triggers signal, and after the pushing of gas is removed, the first end is automatically lowered and reset due to gravity and drives the second end to forcibly separate from the switch unit, which is beneficial to reduce the possibility of being stuck, improve detection efficiency and detection reliability.

[0017] (2) the lever structure used in the application is simpler and has higher reliability. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0019] Figure 1 It is a detection device of a pipe plug needle in the prior art;

[0020] Figure 2 It is a structural schematic diagram of the detection device according to the embodiment of the present application;

[0021] Figure 3 It is a structural schematic diagram of the induction assembly according to the embodiment of the present application;

[0022] Figure 4 It is a structural schematic diagram of the induction assembly according to the embodiment of the present application;

[0023] Figure 5 It is a structural schematic diagram of the pivot according to the embodiment of the present application.

[0024] Reference signs:

[0025] The detection device 1000, the piece to be detected 2000;

[0026] The induction device 100, the fixed structure 200, the clamping assembly 201, the clamping groove 202;

[0027] The trigger mechanism 1, the base 11, the positioning plate 111, the through hole 1111, the induction assembly 12, the pivot 120, the first end 1201, the second end 1202, the obliquely extending section 1203, the pin shaft 121;

[0028] The switch unit 2. DETAILED DESCRIPTION

[0029] The embodiments of the present application will be described in detail below, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the utility model, it needs to be understood that, the orientation or positional relation indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are the orientation or positional relation based on the orientation or positional relation shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "a plurality of" is two or more, unless otherwise specified.

[0031] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0032] Reference is made below Figures 2-5 The trigger mechanism 1, the sensing device 100 and the detection device 1000 according to the embodiments of the utility model are described.

[0033] Embodiment one

[0034] As Figure 2 Indicated, the utility model first aspect embodiment provides a kind of trigger mechanism 1, and trigger mechanism 1 includes pedestal 11 and sensing component 12.

[0035] Sensing component 12 includes pivot 120, and pivot 120 is rotatably connected to pedestal 11.Pivot 120 has first end 1201 and second end 1202, first end 1201 can rotate around pivot axis under the impetus of gas, and second end 1202 can be switched circuit state when first end 1201 rotates and separates or contacts switch unit 2.

[0036] Wherein, the mass of first end 1201 is greater than second end 1202 to make second end 1202 have the tendency of moving towards switch unit 2.

[0037] In a specific application scenario, after product assembly, the internal media channels need to be tested. First, gas is introduced into the media channels. If the media channels are connected, gas can exit from the outlet and push the first end 1201 of the pivot 120 to rotate in a first direction. The second end 1202 is driven to rotate in the first direction to disengage from the switch unit 2. After testing, gas supply to the media channels is stopped. At this point, the first end 1201, no longer propelled by gas, rotates in a second direction (opposite to the first direction) under gravity. The second end 1202 is driven to rotate to contact the switch unit 2, and the circuit state switches from open to closed. If the media channels are not connected, gas cannot exit from the outlet and cannot drive the pivot 120 to rotate; the circuit state remains unchanged before and after gas supply.

[0038] In this application scenario, the circuit status is used to detect whether the medium channel is blocked. If the circuit status switches from an on state to an off state before and after gas is introduced into the medium channel, it indicates that the pivot 120 has triggered the switching unit 2, and the medium channel of the product is unobstructed. If the circuit status remains on before and after gas is introduced into the medium channel, the medium channel of the product is blocked. It should be emphasized that detecting whether the medium channel is blocked by the circuit status is a method that can be implemented by those skilled in the art based on common knowledge. These methods are not within the scope of this solution. The above description is only to illustrate the beneficial effects that this hardware structure improvement can achieve in conjunction with common knowledge. The effect achieved in this novel embodiment does not depend on the implementation of these methods used for illustration.

[0039] The first direction here can be clockwise and the second direction can be counterclockwise; or, the first direction can be counterclockwise and the second direction can be clockwise.

[0040] The pivot 120 and the base 11 can be rotatably connected by a pin 121, with the pin 121 coinciding with the pivot axis.

[0041] In related technologies, the sensing element a is vertically extended and retracted within the sensor b. A linear guide mechanism is required between the sensing element a and the sensor b, which increases the risk of jamming and prevents the sensing element from resetting. This application employs a lever structure that rotates around a pivot axis. Gas pushes one end, triggering a signal at the other end. After the gas push is removed, the first end 1201 automatically droops and resets due to gravity, forcibly disengaging the second end 1202 from the switch unit 2. This reduces the possibility of jamming and improves detection efficiency and reliability.

[0042] As can be seen from the technical solution, the embodiments provided by this utility model have the following advantages:

[0043] (1) This application adopts a lever structure that rotates around the pivot axis. One end is pushed by gas and the other end triggers a signal. After the gas is removed, the first end 1201 automatically droops and resets due to gravity and drives the second end 1202 to be forcibly disengaged from the switch unit 2. This helps to reduce the possibility of jamming and improve detection efficiency and detection reliability.

[0044] (2) The lever structure used in this application is simpler and more reliable.

[0045] Example 2

[0046] like Figure 3 As shown, the first end 1201 is further constructed as a first circular plate, and the second end 1202 is constructed as a second circular plate. By constructing the first end 1201 and the second end 1202 as circular plate structures, it is only necessary to change the radial or thickness dimensions of the first end 1201 and the second end 1202 to make the mass of the first end 1201 greater than that of the second end 1202, so that the second end 1202 has a tendency to move towards the switching unit 2, thereby simplifying the counterweight design of the pivot member 120. Furthermore, by setting the first end 1201 as a circular plate structure, it is beneficial to increase the area of ​​action of the gas on the first end 1201, thereby improving the accuracy of detection.

[0047] like Figure 4 As shown, in some specific embodiments, the diameter of the first circular plate is D1, where 10mm ≤ D1 ≤ 14mm. This means the diameter of the first circular plate can be 10mm, 10.2mm, 11mm, 12mm, 13mm, or 14mm. The specific diameter of the first circular plate is not limited here; it only needs to be between 10mm and 14mm. The diameter of the second circular plate is D2, where 7mm ≤ D2 ≤ 9mm. This means the diameter of the second circular plate can be 7mm, 7.5mm, 8mm, 8.5mm, 8.7mm, or 9mm. Again, the specific diameter of the second circular plate is not limited here; it only needs to be between 7mm and 9mm. Therefore, since the diameter of the first circular plate is larger than the diameter of the second circular plate, the mass of the first end 1201 is greater than that of the second end 1202, giving the second end 1202 a tendency to move towards the switching unit 2.

[0048] like Figure 5As shown, further, the thickness of the first circular plate is 1.1mm to 1.3mm, meaning that the diameter of the first circular plate can be 1.1mm, 1.11mm, 1.23mm, 1.25mm, 1.27mm, or 1.3mm. The specific thickness of the first circular plate is not limited here; it only needs to be between 1.1mm and 1.3mm. The thickness of the second circular plate is 0.4mm to 0.7mm, meaning that the thickness of the second circular plate can be 0.4mm, 0.42mm, 0.5mm, 0.55mm, 0.6mm, or 0.7mm. Again, the specific thickness of the second circular plate is not limited here; it only needs to be between 0.4mm and 0.7mm. Therefore, the thickness of the first circular plate is greater than that of the second circular plate, which allows the mass of the first end 1201 to be greater than that of the second end 1202, giving the second end 1202 a tendency to move towards the switching unit 2.

[0049] In a specific example, the first circular plate has a diameter of 12 mm and a thickness of 1.2 mm; the second circular plate has a diameter of 8 mm and a thickness of 0.6 mm.

[0050] like Figure 2 and Figure 5 As shown, in a specific example, both the first circular plate and the second circular plate are parallel to the horizontal direction; the pivot 120 also has an oblique extension 1203, which is disposed between the first circular plate and the second circular plate, and the oblique extension 1203 is inclined relative to the vertical direction and relative to the horizontal direction.

[0051] Example 3

[0052] like Figure 1 As shown, a second aspect embodiment of the present invention provides a sensing device 100, which includes a switching unit 2, a control circuit, and a triggering mechanism 1 according to the first aspect embodiment of the present invention; the switching unit 2 is disposed on the movement path of the second end 1202; the control circuit can switch on or off according to the contact state between the second end 1202 and the switching unit 2.

[0053] The switching unit 2 here can be configured as a normally open contact switch, a normally closed contact switch, or a micro switch, etc.

[0054] In a specific example, the control circuit is connected when the first end 1201 is disconnected from the switch unit 2; the control circuit is disconnected when the first end 1201 is in contact with the switch unit 2.

[0055] This embodiment of the invention employs a lever structure that rotates around a pivot axis. Gas propulsion at one end triggers a signal at the other. Upon removal of the gas propulsion, the first end 1201 automatically droops and resets due to gravity, forcibly disengaging the second end 1202 from the switch unit 2. This reduces the possibility of jamming and improves detection efficiency and reliability. Furthermore, the lever structure is simpler and more reliable.

[0056] Furthermore, the sensing device 100 also includes an information prompting unit. The information prompting unit is electrically connected to the control circuit, so that it emits a prompting message when the control circuit is connected. This prompting message can be a motion-activated light or an alarm. Specifically, when the prompting unit is a motion-activated light, it illuminates one color of light when the control circuit is connected; when the control circuit is disconnected, it turns off or illuminates another color of light. When the prompting unit is an alarm, it emits a warning sound when the control circuit is connected; when the control circuit is disconnected, it emits another warning sound or does not emit a warning sound.

[0057] Example 4

[0058] like Figure 1 As shown, a third aspect embodiment of the present invention provides a detection device 1000, which includes a fixing structure 200, an air blowing device (not shown), and a sensing device 100 according to a second aspect embodiment of the present invention; the fixing structure 200 can fix the object to be detected 2000; the air blowing device can blow air into the medium channel of the object to be detected 2000 to drive the first end 1201 to rotate about the pivot axis.

[0059] In a specific application scenario, the component to be tested, 2000, is a tube plug needle. The tube plug needle's needle seat and tube are assembled, forming an internal media channel. During testing, the tube plug needle is fixed to the fixed structure 200. An air blowing device blows air into the air inlet of the tube. The gas passes through the media channel formed within the tube and needle seat and exits from the air outlet of the tube. With the internal media channel of the tube plug needle connected, pushing one end with gas triggers a signal at the other end. When the gas push is removed, the first end 1201 automatically droops and resets due to gravity, forcibly disengaging the second end 1202 from the switch unit 2. This reduces the possibility of jamming and improves testing efficiency and reliability. Simultaneously, the lever structure is simpler and more reliable.

[0060] like Figure 1As shown, the switch unit 2 is further positioned above the second end 1202. This means that, in the absence of gas, the mass of the first end 1201 is greater than that of the second end 1202. Under the influence of gravity, the first end 1201 of the pivot 120 tends to rotate downwards, while the second end 1202 tends to rotate upwards and contact the switch unit 2. The switch unit 2 forms a limiting structure for the second end 1202 of the pivot 120, thereby simplifying the structure of the entire detection device 1000.

[0061] like Figure 1 As shown, the base 11 further includes a positioning plate 111, on which a through hole 1111 is formed that penetrates the upper and lower surfaces; a first end 1201 covers the upper opening of the through hole 1111, and the first end 1201 can be lifted upward under the action of gas pressure; the fixing structure 200 includes a snap-fit ​​assembly 201, which is located on the lower side of the positioning plate 111. The snap-fit ​​assembly 201 has a slot 202, which is coaxially arranged with the through hole 1111. The slot 202 can fix the gas outlet of the medium channel so that the gas outlet is axially aligned with the through hole 1111. This means that the first end 1201 of the snap-fit ​​assembly 201 and the pivot 120 are respectively located on the upper and lower sides of the positioning plate 111. The first end 1201 of the pivot 120 completely blocks the upper opening of the through hole 1111. The snap-fit ​​groove 202 of the snap-fit ​​assembly 201 can fix the gas outlet of the medium channel so that the gas outlet is coaxially arranged with the through hole 1111. Thus, the gas at the gas outlet can be directly aligned with the through hole 1111 and push the first end 1201 to rise through the through hole 1111, thereby further improving the reliability and accuracy of the detection.

[0062] It should be noted that the slot 202 of the snap-fit ​​assembly 201 can be determined according to the specific position of the outlet end of the component 2000 to be tested. Taking a tube plug needle as an example, tube plug needles from the same batch have high consistency, and a sample of the tube plug needle can be used to determine the opening position of the slot 202. First, fix the snap-fit ​​assembly 201 to the lower side of the positioning plate 111 to stabilize their relative positions; then, after the position between the snap-fit ​​assembly 201 and the positioning plate 111 is determined, place the tube plug needle sample on the snap-fit ​​assembly 201 until the outlet end of the tube plug needle is axially aligned with the through hole 1111 of the positioning plate 111, mark the position of the tube plug needle on the snap-fit ​​assembly 201, and open the slot 202 at that position.

[0063] Furthermore, the slot 202 is used to accommodate the air inlet end of the medium channel and is connected to the blowing device. That is to say, the slot 202 forms a connecting channel between the air inlet end and the blowing device. When the medium channel of the plug needle is connected, the gas flow path is: blowing device → slot 202 → medium channel air inlet end → medium channel → medium channel air outlet end.

[0064] Other configurations and operations of the detection device 1000 according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here. In the description of the present invention, "first feature" and "second feature" may include one or more of the aforementioned features. The up-down direction, left-right direction, and front-back direction are defined as shown in the figures.

[0065] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features not in direct contact but through another feature between them. Moreover, "above," "over," and "on top" of the second feature include the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A triggering mechanism, characterized in that, include: Base (11); The sensing component (12) includes a pivot (120) rotatably connected to the base (11), the pivot (120) having a first end (1201) and a second end (1202), the first end (1201) being configured to rotate about a pivot axis under the push of a gas, and the second end (1202) being configured to disengage from or contact a switching unit to switch circuit states when the first end (1201) rotates; The mass of the first end (1201) is greater than that of the second end (1202) so that the second end (1202) tends to move toward the switching unit.

2. The triggering mechanism according to claim 1, characterized in that, The first end (1201) and the second end (1202) are respectively constructed as a first circular plate and a second circular plate.

3. The triggering mechanism according to claim 2, characterized in that, The diameter of the first circular plate is D1, where 10mm ≤ D1 ≤ 14mm; The diameter of the second circular plate is D2, where 7mm ≤ D2 ≤ 9mm.

4. The triggering mechanism according to claim 2, characterized in that, The thickness of the first circular plate is 0.4mm to 0.7mm, and the thickness of the second circular plate is 1.1mm to 1.3mm.

5. The triggering mechanism according to claim 2, characterized in that, Both the first circular plate and the second circular plate are parallel to the horizontal direction; The pivot (120) also has an oblique extension (1203) disposed between the first circular plate and the second circular plate, the oblique extension (1203) being inclined relative to the vertical direction and relative to the horizontal direction.

6. A sensing device, characterized in that, include: The triggering mechanism according to any one of claims 1-5; The switch unit (2) is located on the movement path of the second end (1202); The control circuit is configured to switch on or off based on the contact state between the second terminal (1202) and the switching unit (2).

7. The sensing device according to claim 6, characterized in that, It also includes an information prompt unit; The information prompting unit is electrically connected to the control circuit and is used to issue a prompting message when the control circuit is connected.

8. A detection device, characterized in that, include: The sensing device according to any one of claims 6-7; A fixing structure (200) is used to fix the part to be tested (2000); An air blowing device is configured to blow air into the medium channel of the test piece (2000) to drive the first end (1201) to rotate about the pivot axis.

9. The detection device (1000) according to claim 8, characterized in that, The switch unit (2) is located above the second end (1202).

10. The detection device (1000) according to claim 9, characterized in that, The base (11) has a positioning plate (111); The positioning plate (111) has a through hole (1111) that passes through the upper and lower surfaces. The first end (1201) covers the upper opening of the through hole (1111) and is configured to lift upward under gas pressure; The fixing structure (200) includes a snap-fit ​​assembly (201), which is located on the lower side of the positioning plate (111) and has a slot (202) arranged coaxially with the through hole (1111). The slot (202) is used to fix the outlet end of the medium channel so that the outlet end is axially aligned with the through hole (1111).

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