Position detection device and continuous furnace

Abstract

The invention belongs to the technical field of position detection, and discloses a position detection device and a continuous furnace, and the position detection device comprises a fixing mechanism, a swing mechanism and a detection mechanism. The fixing mechanism is provided with a through hole in the first direction, and the fixing mechanism is configured to be installed on a fixing wall. The swing mechanism comprises a rotating shaft and a shifting piece, the rotating shaft rotatably penetrates through the through hole and comprises a first end located on the inner side of the fixed wall and a second end located on the outer side of the fixed wall, and the shifting piece is connected with the first end; the detection mechanism comprises a swing part, an elastic reset part and a plurality of contacts, one end of the swing part is connected with the second end, one end of the elastic reset part is connected to the fixing mechanism, the other end of the elastic reset part is connected to the swing part, and the swing part can make electrical contact with any contact. The position detection device provided by the invention has relatively high detection accuracy and reliability.

Description

Technical Field

[0001] This invention relates to the field of position detection technology, and more particularly to a position detection device and a continuous furnace. Background Technology

[0002] Continuous tempering furnaces, also known as continuous furnaces, are mainly used for the thermal processing of materials. They are characterized by high production efficiency, significantly improving both output and quality. Continuous furnaces typically have multiple heating chambers and at least one cooling chamber, where the materials are cooled.

[0003] In related technologies, the movement of materials within a continuous furnace requires the detection of their position using a position detection device to initiate corresponding operations. This position detection device is typically a photoelectric switch. Transparent windows are located on both sides of the furnace body, with two opposing windows forming a group. Due to the high temperature inside the furnace, the photoelectric switches need to be located outside the furnace. Two photoelectric switches are grouped together and positioned one-to-one with each transparent window. The opposing photoelectric switches illuminate each other through the transparent windows to detect if any material is obstructing the view. If obstruction is detected, it indicates that the material is between the two photoelectric switches. However, due to the large amount of dust inside the furnace, dust can easily accumulate on the transparent windows, leading to false detections of material presence and resulting in low accuracy and reliability. Summary of the Invention

[0004] The first objective of this application is to provide a position detection device to solve the technical problems of low accuracy and reliability in the prior art.

[0005] The second objective of this application is to provide a continuous furnace with high accuracy in position detection.

[0006] Based on the above concept, the technical solution adopted in this application is:

[0007] Position detection device, including:

[0008] A fixing mechanism having a through hole along a first direction, the fixing mechanism being configured to be installed on a fixing wall;

[0009] The swing mechanism includes a rotating shaft and a toggle member. The rotating shaft is rotatably disposed through the through hole and includes a first end located inside the fixed wall and a second end located outside the fixed wall. The toggle member is connected to the first end.

[0010] The detection mechanism includes a swinging component, an elastic reset component, and multiple contacts. One end of the swinging component is connected to the second end, and one end of the elastic reset component is connected to the fixing mechanism, while the other end is connected to the swinging component.

[0011] The actuating element moves under external force, causing the rotating shaft to rotate relative to the fixed mechanism, thereby causing the oscillating element to electrically connect with one of the contacts.

[0012] In one embodiment, two elastic reset members are provided, with one end of each elastic reset member correspondingly connected to both sides of the swing member in the width direction. One end of the swing member is connected to the rotating shaft, and the other end of the swing member can be electrically connected to the contact. The elastic reset members are connected to the portion of the swing member located between the two ends.

[0013] In one embodiment, at least two of the contacts are arranged circumferentially spaced along the fixing mechanism.

[0014] In one embodiment, the detection mechanism further includes a support plate connected to the fixing mechanism, and the contact point is disposed on the support plate.

[0015] In one embodiment, the support plate has an arc-shaped structure, and at least two contacts include a first contact and a plurality of second contacts; the plurality of second contacts are symmetrically arranged on the support plate;

[0016] The actuating element has a free position and multiple force-bearing positions; when the actuating element is in the free position, the oscillating element is electrically connected to the first contact; the force-bearing positions correspond one-to-one with the second contacts, and when the oscillating element is in the force-bearing position, the oscillating element is electrically connected to the corresponding second contact.

[0017] In one embodiment, the support plate is slidably connected to the fixing mechanism along a first direction, and an elastic element is provided between the support plate and the fixing mechanism.

[0018] In one embodiment, the actuating member is provided with a first strip-shaped hole, and the rotating shaft is connected to the actuating member by at least two first fasteners passing through the first strip-shaped hole;

[0019] And / or, the swing member is provided with a second strip hole, and the rotating shaft is connected to the swing member by at least two second fasteners passing through the second strip hole.

[0020] In one embodiment, the fixing mechanism includes a fixing seat, a sealing seat, and a sealing assembly; the fixing seat is mounted on the fixing wall; the sealing seat is fixedly connected to one side of the fixing seat in the first direction; the through hole includes a first sub-hole in the fixing seat and a second sub-hole in the sealing seat; at least a portion of the sealing assembly is disposed between the rotating shaft and the hole wall of the second sub-hole.

[0021] The elastic reset member is located on the side of the sealing seat opposite to the fixed seat and is connected to the sealing seat; the contact point is located on the sealing seat.

[0022] In one embodiment, the sealing assembly includes an oil ring, a first sealing ring, and a second sealing ring, all located between the rotating shaft and the bore wall of the second sub-hole, with the first sealing ring and the second sealing ring located on both sides of the oil ring in the first direction;

[0023] The sealing assembly further includes a pressure ring. The wall of the first sub-hole is provided with a boss. The first sealing ring abuts against the boss. One end of the pressure ring extends between the rotating shaft and the wall of the second sub-hole and abuts against the second sealing ring. The other end of the pressure ring is connected to the sealing seat by a third fastener.

[0024] A continuous furnace, the continuous furnace including the position detection device as described above, and the fixed wall being the furnace wall of the continuous furnace.

[0025] The beneficial effects of this application are:

[0026] The position detection device provided in this application, by setting a fixing mechanism, enables the position detection device to be installed on a fixed wall. The first end of the rotating shaft of the swing mechanism is located inside the fixed wall, and the second end is located outside the fixed wall. The actuating element for contacting the material or tray is connected to the first end of the rotating shaft, realizing direct contact with the material or tray, thereby improving the accuracy of position detection, reducing the risk of false detection, and having high position detection reliability; at the same time, multiple positions can be detected through multiple contacts. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this application and these drawings without creative effort.

[0028] Figure 1 This is a first structural schematic diagram of the position detection device provided in the embodiments of this application;

[0029] Figure 2 This is a schematic diagram of the second structure of the position detection device provided in the embodiments of this application;

[0030] Figure 3 This is a side view of the position detection device provided in the embodiments of this application;

[0031] Figure 4This is a cross-sectional view of the position detection device provided in the embodiments of this application;

[0032] Figure 5 This application Figure 4 The enlarged view at point A is shown below;

[0033] Figure 6 This is an exploded view of the position detection device provided in the embodiments of this application;

[0034] Figure 7 This is a first structural schematic diagram of the support plate and contacts provided in an embodiment of this application;

[0035] Figure 8 This is a state diagram of two position detection devices provided in the embodiments of this application;

[0036] Figure 9 This is another state diagram of the two position detection devices provided in the embodiments of this application;

[0037] Figure 10 This is yet another state diagram of the two position detection devices provided in the embodiments of this application;

[0038] Figure 11 This is a second structural schematic diagram of the support plate and contacts provided in the embodiments of this application;

[0039] Figure 12 This is a schematic diagram of the continuous furnace provided in the embodiments of this application.

[0040] In the picture:

[0041] 10. Position detection device; 1. Fixing mechanism; 11. Through hole; 111. First sub-hole; 112. Second sub-hole; 12. Fixing seat; 13. Sealing seat; 131. Boss; 14. Sealing assembly; 141. Oil ring; 142. First sealing ring; 143. Second sealing ring; 144. Pressure ring; 15. First ear seat; 16. Second ear seat; 2. Swinging mechanism; 21. Rotating shaft; 211. First end; 212. Second end; 22. Actuating element; 221. First strip hole; 23. Roller; 3. Testing mechanism; 31. Swinging component; 311. Second strip hole; 312. Contact piece; 32. Elastic reset component; 33. Contact point; 331. First contact point; 332. Second contact point; 3321. Contact point one; 3322. Contact point two; 3323. Contact point three; 3324. Contact point four; 34. Support plate; 4. Elastic component; 51. First fastener; 52. Second fastener; 53. Third fastener; 61. First bearing; 62. Second bearing; 100. Material; 200. Continuous furnace; X. First direction. Detailed Implementation

[0042] To make the technical problems solved by this application, the technical solutions adopted, and the technical effects achieved clearer, the technical solutions of this application will be further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this application and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not all of them.

[0043] It should be understood that the phrase "an embodiment" or "one embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "in one embodiment" or "in one embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0045] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0046] In this application, 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 through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes 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. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature. In the description of this embodiment, unless otherwise specified, "multiple" specifically refers to two or more.

[0047] In the description of this embodiment, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of description and simplification of operation. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0048] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or it can be located in between the component.

[0049] The technical solution of this application will be further described below with reference to the accompanying drawings and specific embodiments.

[0050] This embodiment provides a position detection device 10, which has high accuracy and reliability and reduces the risk of false detection.

[0051] The position detection device 10 in this embodiment can be applied in a continuous furnace 200 to detect the position of the material 100 in the continuous furnace 200. When the continuous furnace 200 includes a dewaxing chamber and a cooling chamber, the position detection device 10 can be installed in the dewaxing chamber to detect the position of the material 100 in the dewaxing chamber. The position detection device 10 can also be installed in the cooling chamber to detect the position of the material 100 in the cooling chamber.

[0052] For example, such as Figures 1 to 7 As shown, the position detection device 10 includes a fixing mechanism 1, a swinging mechanism 2, and a detection mechanism 3. The fixing mechanism 1 has a through hole 11 along a first direction X, meaning the through hole 11 penetrates both surfaces of the fixing mechanism 1 in the first direction X. In this embodiment, the length direction of the fixing mechanism 1 is the first direction X. The fixing mechanism 1 is configured to be mounted on a fixed wall (not shown in the figure). The fixed wall has a certain thickness to facilitate the mounting of the fixing mechanism 1. The fixed wall may have mounting holes (not shown in the figure), through which the fixing mechanism 1 passes and is fixedly connected, or detachably connected to the fixed wall.

[0053] It should be noted that the fixed wall is used to enclose and form the space to be detected, in which the material 100 is located, and the position detection device 10 is used to detect the position of the material 100 within the space to be detected. For example, when the position detection device 10 is applied to a continuous furnace 200, the fixed wall can be the circumferential side wall, bottom wall, or top wall of the furnace body of the continuous furnace 200; this embodiment does not limit this. More specifically, when the position detection device 10 is applied to a cooling chamber, the fixed wall can be the circumferential side wall, bottom wall, or top wall of the cooling chamber, etc.; this embodiment does not limit this.

[0054] For example, such as Figure 1 As shown, the swing mechanism 2 includes a rotating shaft 21 and a toggle member 22. The rotating shaft 21 is rotatably inserted through the through hole 11 (see Figure 1). Figure 4 ), and, as Figure 1 and Figure 2 As shown, the rotating shaft 21 includes a first end 211 located inside the fixed wall and a second end 212 located outside the fixed wall. In this embodiment, the side of the fixed wall facing the space to be tested is referred to as the inner side of the fixed wall, and the side of the fixed wall facing away from the space to be tested is referred to as the outer side of the fixed wall. The rotating shaft 21 is rotatably inserted through the through hole 11, allowing the rotating shaft 21 to rotate relative to the fixing mechanism 1. The first end 211 and the second end 212 are the two ends along the axial direction of the rotating shaft 21. In this embodiment, the axial direction of the rotating shaft 21 is the first direction X. Figure 2 As shown, the actuating element 22 is connected to the first end 211. Optionally, the connection between the actuating element 22 and the first end 211 can be a fixed connection or a movable connection, which is not limited in this embodiment.

[0055] In this embodiment, the actuating member 22 is used to abut against the material 100 or the tray carrying the material 100. When the material 100 or the tray moves, it can push the actuating member 22 to move, thereby causing the actuating member 22 to drive the rotating shaft 21 to rotate. By setting the actuating member 22, the position detection device 10 can sense the specific position of the material 100 or the tray in a direct contact manner, rather than indirect sensing by infrared light, which has higher position detection accuracy.

[0056] Please continue reading Figure 1In this embodiment, the detection mechanism 3 includes a swinging member 31, an elastic reset member 32, and multiple contacts 33. One end of the swinging member 31 is connected to the second end 212 of the rotating shaft 21. When the rotating shaft 21 rotates relative to the fixed mechanism 1, it drives the swinging member 31 to move. One end of the elastic reset member 32 is connected to the fixed mechanism 1, and the other end is connected to the swinging member 31. The elastic reset member 32 is used for the automatic reset of the swinging member 31, thereby improving the flexibility of the swinging member 31. When the swinging member 31 swings under the drive of the rotating shaft 21, it can make electrical contact with the contacts 33, thereby making the circuit connected to the contacts 33 conductive, forming a closed circuit, and generating a position signal. It should be noted that there are multiple contacts 33, and the swinging member 31 can make electrical contact with any one of the contacts 33. When the swinging member 31 contacts different contacts 33, the closed circuit generates different position signals, and the controller, such as the control host, can determine the specific position of the material 100 in the space to be detected based on the different position signals. It should also be noted that the entire detection mechanism 3 can be similar to a large limit switch, and the contact 33 can be understood as the terminal block forming the inside of the switch.

[0057] In this embodiment, the position detection device 10 operates by actuating member 22 under external force, such as being pushed by material 100 or a tray. Since actuating member 22 is connected to the first end 211 of rotating shaft 21, it can drive rotating shaft 21 to rotate relative to fixed mechanism 1. Because oscillating member 31 is connected to the second end 212 of rotating shaft 21, it can oscillate. When oscillating, oscillating member 31 can electrically connect to one of the contacts 33, thus activating the circuit connected to that contact 33 to generate a position signal. Different oscillation amplitudes of oscillating member 31 allow it to electrically connect to different contacts 33, resulting in different position signals.

[0058] In addition, multiple position detection devices can be set up. Based on the different position signals of the position detection devices at different locations, the position of material 100 in the space to be detected can be further determined. For example, a position detection device can be placed at the inlet and a position detection device at the outlet. When material 100 enters from the inlet, it will touch the position detection device at the inlet. At this time, the position signal of the position detection device changes. The position signal of the position detection device at the outlet does not change. When the position signal of the position detection device at the outlet changes, it means that one end of material 100 has approached the outlet, thus determining a more accurate position of material 100.

[0059] The position detection device 10 provided in this embodiment can be installed on a fixed wall by setting a fixing mechanism 1. The first end 211 of the rotating shaft 21 of the swing mechanism 2 is located on the inner side of the fixed wall, and the second end 212 is located on the outer side of the fixed wall. The actuating member 22 for contacting the material 100 or the tray is connected to the first end 211 of the rotating shaft 21, realizing direct contact with the material 100 or the tray, thereby improving the accuracy of position detection, reducing the risk of false detection, and having high position detection reliability.

[0060] The actuating element 22 transmits the external force it receives to the oscillating element 31 through the rotating shaft 21, so that the oscillating element 31 makes electrical contact with different contacts 33, thereby enabling a more accurate determination of the position of the material 100 based on the conduction state of different contacts 33, thus enriching its functions.

[0061] In some optional embodiments, the swing member 31 is provided with a contact piece 312. The contact piece 312 is made of metal and is used to make electrical contact with the contact 33 to form a conduction. At this time, the contact 33 conducts and closes the circuit to generate a position signal. This process is prior art. The specific structure and working principle of the contact 33 closing to generate an electrical signal are also prior art and do not involve the innovation of this embodiment. As long as the corresponding function can be achieved, it is acceptable. This embodiment will not be described in detail here. The contact 33 is a key conductive component in electrical switching devices (such as relays, contactors, circuit breakers, push-button switches, etc.), responsible for connecting or disconnecting the circuit through physical contact or separation. For example, the contact 33 in this embodiment can be a contactor contact (such as Siemens 3TF series contact AgSnO2), a circuit breaker contact (such as AgW50, CuW70), a switch contact (such as AgCdO15), etc.

[0062] In at least one possible implementation, such as Figure 3 As shown, two elastic reset members 32 are provided. The two elastic reset members 32 are located on both sides of the swing member 31 in the width direction. One end of each elastic reset member 32 is connected to one side of the swing member 31 in the width direction, and the other end of each elastic reset member 32 is connected to the fixing mechanism 1 (see...). Figure 1 By providing two elastic reset members 32, the oscillating member 31 can be reset by the elastic reset members 32 when it oscillates in different directions, which improves the detection range of the position detection device 10, increases its flexibility, and reduces the risk of damage. Optionally, the elastic reset member 32 can be a spring or other structure that can undergo elastic deformation; this embodiment does not limit this.

[0063] For example, in Figure 3 In the indicated orientation, elastic reset members 32 are provided on both the left and right sides of the swing member 31, allowing the swing member 31 to... Figure 3The swinging member 31 swings to the left or right as indicated. When the swinging member 31 swings to the left under the drive of the rotating shaft 21, it stretches the elastic reset member 32 located on the right and compresses the elastic reset member 32 located on the left. When the external force on the actuating member 22 disappears, the swinging member 31 returns to its original position under the elastic force of the two elastic reset members 32. Figure 3 This is the state after the swing element 31 has been reset, at which point the swing element 31 is in a state of force balance.

[0064] In at least one implementation, please refer to Figure 1 and Figure 3 One end of the oscillating member 31 is connected to the second end 212 of the rotating shaft 21. The other end of the oscillating member 31 can be electrically connected to the contact 33. The elastic reset member 32 is connected to the portion of the oscillating member 31 located between the two ends, that is, the elastic reset member 32 is connected to the middle portion of the oscillating member 31, so that the oscillating member 31 can be smoothly reset. For example, the connection position between the elastic reset member 32 and the oscillating member 31 can be called the first position, the connection position between the oscillating member 31 and the rotating shaft 21 can be called the second position, and the position where the oscillating member 31 is electrically connected to the contact 33 can be called the third position. The first position is located between the second position and the third position.

[0065] In this embodiment, one end of the swing member 31 is connected to the rotating shaft 21, so that when the rotating shaft 21 rotates, it can drive the swing member 31 to swing with one end as the swing center, thereby making the movement trajectory of the other end of the swing member 31 arc-shaped, which facilitates electrical contact with the contact point 33.

[0066] To accommodate the oscillating characteristics of the oscillating component 31, in some embodiments, such as... Figure 3 As shown, at least two contacts 33 are spaced apart circumferentially along the fixing mechanism 1. This arrangement ensures that the oscillating member 31, during its oscillation, is directly aligned with the contacts 33 in the first direction X, thereby facilitating contact plates 312 on the oscillating member 31 (see...). Figure 6 It makes electrical contact with contact 33.

[0067] In at least one possible implementation, such as Figure 1 and Figure 3 As shown, the detection mechanism 3 also includes a support plate 34. The contacts 33 are mounted on the fixing mechanism 1 via the support plate 34. For example, the support plate 34 is connected to the fixing mechanism 1, and the contacts 33 are mounted on the support plate 34. By providing the support plate 34, it is easy to fix multiple contacts 33, so that multiple contacts 33 and the support plate 34 form an integral structure, which is conducive to assembly and disassembly.

[0068] Optionally, the support plate 34 can be detachably connected to the fixing mechanism 1, or it can be fixedly connected to the fixing mechanism 1; this embodiment does not limit this. The contact 33 is specifically a metal block, and the contact 33 can be fixedly connected to the support plate 34, or it can be detachably connected to the support plate 34; this embodiment does not limit this.

[0069] For example, such as Figure 7 As shown, the support plate 34 has an arc-shaped insulating structure; for example, in this embodiment, the support plate 34 is semi-circular. Furthermore, at least two contacts 33 include a first contact 331 and multiple second contacts 332. Both the first contact 331 and the second contact 332 are disposed on the support plate 34, and the multiple second contacts 332 are symmetrically disposed on the support plate 34 relative to the first contact 331.

[0070] In this embodiment, the actuating member 22 has a free position and multiple force-bearing positions. The actuating member 22 being in the free position means that it is not in contact with any other object, that is, it is not under any force. The actuating member 22 being under force means that it is subjected to the force of the material 100 or the tray. When the actuating member 22 is in the free position, the oscillating member 31 is in... Figure 3 The device is in the state shown and electrically connected to the first contact 331. At this time, the detection mechanism 3 can have a position signal. In this embodiment, multiple force-bearing positions correspond one-to-one with multiple second contacts 332. When the swing member 31 is in a force-bearing position, the swing member 31 is electrically connected to the second contact 332 corresponding to that force-bearing position, and at this time, the detection mechanism 3 has another position signal. It should be noted that different position signals will be generated when the swing member 31 is electrically connected to different second contacts 332.

[0071] Thus, based on the different position signals, the rotation amplitude of the actuating element 22 can be determined, and the relative position of the material 100 and the actuating element 22 can be determined.

[0072] In some optional embodiments, the support plate 34 is slidably connected to the fixing mechanism 1 along the first direction X, so that the support plate 34 can have a certain displacement relative to the fixing mechanism 1 in the first direction X, thereby improving the flexibility of the support plate 34 and reducing the risk of damage to the support plate due to impact with the material 100 or other objects.

[0073] For example, please continue to see Figure 6 An elastic element 4 may be provided between the support plate 34 and the first ear seat 15 of the fixing mechanism 1. The elastic element 4 is used for the reset of the support plate 34 and also for making the contact piece 312 of the swing member 31 better abut against the contact piece 312, thereby ensuring the accuracy and reliability of the position signal.

[0074] In at least one embodiment, such as Figure 2 or Figure 4As shown, the actuating member 22 has a first strip-shaped hole 221, the length direction of which intersects with the first direction X. For example, the length direction of the first strip-shaped hole 221 is the length direction of the actuating member 22. Figure 2 As shown, the rotating shaft 21 is connected to the actuating member 22 via at least two first fasteners 51 passing through the first slot 221. By providing the first slot 221, the connection position between the actuating member 22 and the rotating shaft 21 can be adjusted along the length of the first slot 221, thereby adjusting the length of the portion of the actuating member 22 above the rotating shaft 21 to accommodate materials 100 of different sizes, thus increasing its applicability. By connecting the actuating member 22 and the rotating shaft 21 with at least two first fasteners 51, the actuating member 22 will not detach from the rotating shaft 21 and rotate around the first fasteners 51. Instead, the rotation of the actuating member 22 will always drive the rotating shaft 21 to rotate; that is, the actuating member 22 and the rotating shaft 21 rotate synchronously, improving the reliability of the structure and thus ensuring the accuracy of the detection.

[0075] Optionally, the first fastener 51 can be a bolt, with the bolt stud passing through the first slot 221 and screwed to the end face of the rotating shaft 21. The bolt nut is located on the side of the actuating member 22 opposite to the rotating shaft 21.

[0076] In at least one embodiment, such as Figure 2 As shown, a roller 23 is connected to the end of the actuating element 22 away from the rotating shaft 21. The roller 23 is rotatably connected to the actuating element 22. The roller 23 is used to make rolling contact with the material 100 or the tray, thereby reducing the contact friction between the actuating element 22 and the material 100 or the tray, thereby reducing the risk of jamming and improving structural reliability and flexibility.

[0077] In some alternative embodiments, such as Figure 3 As shown, the swing member 31 is provided with a second strip-shaped hole 311. The length direction of the second strip-shaped hole 311 intersects the first direction X. For example, the length direction of the second strip-shaped hole 311 is the length direction of the swing member 31. The rotating shaft 21 is connected to the swing member 31 by at least two second fasteners 52 passing through the second strip-shaped hole 311. By providing the second strip-shaped hole 311, the connection position between the swing member 31 and the rotating shaft 21 can be adjusted along the length direction of the second strip-shaped hole 311, thereby allowing the length of the portion of the swing member 31 above the rotating shaft 21 to be adjusted to accommodate positions of support plates 34 or contacts 33 of different sizes, increasing the applicability range. By providing at least two first fasteners 51 to connect the swing member 31 and the rotating shaft 21, the swing member 31 will not detach from the rotating shaft 21 and rotate around the second fasteners 52; instead, the swing member 31 rotates synchronously with the rotating shaft 21, improving the reliability of the structure and thus ensuring the accuracy of the detection.

[0078] Optionally, the second fastener 52 can be a bolt, with the bolt stud passing through the second slot 311 and screwed to the end face of the rotating shaft 21. The bolt nut is located on the side of the swing member 31 opposite to the rotating shaft 21.

[0079] The fixing mechanism 1 can have various specific structures; this embodiment exemplarily provides one fixing mechanism 1. For example... Figures 4 to 6 As shown, the fixing mechanism 1 includes a fixing seat 12, a sealing seat 13, and a sealing assembly 14 (see Figure 14). Figure 3 The fixing seat 12 is installed on the fixing wall. The sealing seat 13 is fixedly connected to one side of the fixing seat 12 in the first direction X; that is, the fixing seat 12 and the sealing seat 13 are arranged in the first direction X. Figure 4 As shown, the through hole 11 includes a first sub-hole 111 disposed in the fixed base 12 and a second sub-hole 112 disposed in the sealing base 13. The rotating shaft 21 passes through the first sub-hole 111 and the second sub-hole 112 and is capable of rotating relative to the fixed base 12 and the sealing base 13. In this embodiment, the detection mechanism 3 is located on the side of the sealing base 13 opposite to the fixed base 12, so that the detection mechanism 3 can be located on the outer wall of the fixed wall. At least a portion of the sealing assembly 14 is disposed between the rotating shaft 21 and the hole wall of the second sub-hole 112, and is used to seal the gap between the rotating shaft 21 and the hole wall of the second sub-hole 112. When the position detection device is applied in the continuous furnace 200, the sealing assembly 14 can seal the gap between the rotating shaft 21 and the fixed mechanism 1, preventing air from entering the continuous furnace 200.

[0080] In this embodiment, please continue to refer to Figure 5 The elastic reset member 32 is located on the side of the sealing seat 13 opposite to the fixed seat 12 and is connected to the sealing seat 13, such as... Figure 4 As shown, contact 33 is indirectly disposed on sealing seat 13, that is, support plate 34 is fixedly connected to sealing seat 13.

[0081] The fixing mechanism 1 provided in this embodiment has a relatively simple structure, which makes the structure of the position detection device 10 simpler, easier to assemble, and also lower in cost.

[0082] In some alternative embodiments, such as Figure 5As shown, the sealing assembly 14 includes an oil ring 141, a first sealing ring 142, and a second sealing ring 143, all located between the rotating shaft 21 and the bore wall of the second sub-hole 112. The first sealing ring 142 and the second sealing ring 143 are located on opposite sides of the oil ring 141 in the first direction X. The arrangement of the first sealing ring 142 and the second sealing ring 143 ensures the sealing effect of the sealing assembly 14. The oil ring 141 contains lubricating oil, thereby achieving oil sealing and lubrication, further improving the sealing performance. In this embodiment, an oil channel (not shown in the figure) is provided on the sealing seat 13, which communicates with the inner cavity of the oil ring 141 for adding lubricating oil to the inner cavity.

[0083] In one embodiment, please see [link to embodiment]. Figure 5 The sealing assembly 14 also includes a pressure ring 144. The wall of the first sub-hole 111 is provided with a boss 131, which may be annular. The first sealing ring 142 abuts against the boss 131 in the first direction X. One end of the pressure ring 144 extends between the rotating shaft 21 and the wall of the second sub-hole 112 and abuts against the second sealing ring 143. The other end of the pressure ring 144 is connected to the sealing seat 13 by a third fastener 53. In this embodiment, by setting the pressure ring 144, the pressure ring 144 and the sealing seat 13 are connected by the third fastener 53 (e.g., bolt). By adjusting the connection depth between the third fastener 53 and the sealing seat 13, the first sealing ring 142 and the second sealing ring 143 can be tightly attached to the wall of the rotating shaft 21 and the second sub-hole 112, thereby achieving a seal between the rotating shaft 21 and the sealing seat 13.

[0084] In some optional ones, such as Figure 6 As shown, the circumferential surface of the sealing seat 13 is provided with three first ear seats 15, which are used to fix the support plate 34, thereby achieving a fixed connection between the support plate 34 and the sealing seat 13. The end face of the sealing seat 13 is provided with two second ear seats 16, which are used to constrain the swing member 31. For example, the two second ear seats 16 correspond one-to-one with the two elastic reset members 32, and the elastic reset members 32 are connected to the corresponding second ear seats 16. In this embodiment, the main body of the swing member 31 can be made of insulating material such as acrylic that meets strength requirements, and the contact piece 312 on the swing member 31 is made of conductive material.

[0085] Optionally, such as Figure 4 As shown, the rotating shaft 21 can be rotatably mounted in the through hole 11 via bearings. For example, a first bearing 61 and a second bearing 62 are installed in the through hole 11, and the rotating shaft 21 is installed through the first bearing 61 and the second bearing 62. This installation via the first bearing 61 and the second bearing 62 reduces the friction between the rotating shaft 21 and the hole wall of the through hole 11, thereby improving the detection accuracy.

[0086] Alternatively, for position detection within the cooling chamber, due to limitations imposed by components such as the fan and heat exchanger, the photoelectric switch detection position is located diagonally below the furnace chamber. Dust easily accumulates on the glass viewing window. Furthermore, two sets of through-beam photoelectric switches, one in front and one in back, are required for front and rear limit positions, providing only two position points. This is unsuitable for the oscillating process when cooling materials in the cooling chamber at 100°C. Additionally, the vibration generated by the cooling chamber fan when cooling materials at 100°C, along with the magnetic field produced by the heating power lines, can also affect the accuracy of the photoelectric switch signal.

[0087] This embodiment also provides a cooling device, including the aforementioned position detection device 10, to solve the above-mentioned problems and have high position detection accuracy.

[0088] The cooling equipment includes a cooling chamber, where the fixed wall is the wall of the cooling chamber. The actuating element 22 of the position detection device 10 and the first end 211 of the rotating shaft 21 are located inside the cooling chamber. In this embodiment, as... Figures 8 to 10 As shown, at least two position detection devices 10 may be provided, and the cooling chamber has a feed side and a discharge side. Position detection devices 10 are provided on both the feed side and the discharge side.

[0089] Optionally, such as Figure 11 As shown, the position detection device 10 applied to the cooling chamber has four second contacts 332, which are symmetrically arranged. For ease of description, the four second contacts 332 are named contact one 3321, contact two 3322, contact three 3323, and contact four 3324, respectively. The distribution of contact one 3321, contact two 3322, contact three 3323, and contact four 3324 is as follows. Figure 11 As shown.

[0090] In this embodiment, two position detection devices 10 are used as an example. The two position detection devices 10 are used to detect the front limit and rear limit of the material 100. When the material 100 is transported from the sintering chamber to the cooling chamber, the swinging member 31 of the two position detection devices 10 is in its original position under the action of the two elastic reset members 32. At this time, the contact piece 312 contacts the first contact point 331, so that the first contact point 331 is connected, and the cooling chamber is in a material-free state. When the material tray contacts the roller 23 of the position detection device 10 located on the inlet side, the material tray drives the actuating member 22 to flip downward as it continues to move forward. The actuating member 22 drives the swinging member 31 outside the cooling chamber to rotate through the rotating shaft 21. At this time, one of the elastic reset members 32 is stretched and the other elastic reset member 32 is contracted. At this time, the first contact point 331 is disconnected, indicating that the material 100 has reached the front limit. As the tray continues to advance, when it contacts the position detection device 10 located on the outlet side, it drives the swing member 31 of the position detection device 10 to rotate. This causes the contact piece 312 of the swing member 31 to make electrical contact with the contact point 3323, at which point the material 100 is transported to its designated position, and transport stops. At this time, the states of the actuating members 22 of the two position detection devices 10 are as follows: Figure 8 As shown.

[0091] When the cooling chamber fan starts cooling the material 100, to prevent the roller shaft from deforming due to heat, it needs to vibrate every few minutes, that is, moving the material 100 forward a certain distance and then moving it backward a certain distance. After the vibration mode is turned on, the tray moves towards the discharge side. When the contact 312 of the position detection device 10 on the discharge side is activated, contact 3324 is turned on, the movement stops and a 5-minute timer is started. At this time, the tray is completely pressed on the position detection device 10 on the discharge side, and the position detection device 10 on the feed side is reset to its original state. The first contact 331 is activated. At this time, the state of the toggle member 22 of the position detection device 10 is as follows. Figure 9 As shown.

[0092] When the time is up, the tray begins to move towards the feeding side. When the contact 312 of the position detection device 10 on the feeding side rotates to be electrically connected to contact 3321, that is, when contact 312 conducts through contact 3321, the moving stops and the timer starts. At this time, the tray is completely pressed against the position detection device 10 on the feeding side, and the position detection device 10 on the discharging side returns to its original state. At this time, the state of the actuating element 22 of the position detection device 10 is as follows: Figure 10 As shown. The oscillation continues until the material has cooled to 100°C and is removed from the furnace.

[0093] As can be seen, the cooling equipment provided in this embodiment is not easily affected by dust or other factors, which could cause false detections. Furthermore, multiple contacts 33 can be installed to precisely control the stopping position of the material 100 during transport. The position detection is more accurate and effective, especially when dealing with the vibration process in the cooling chamber. In addition, it can also avoid the situation where the magnetic field generated by the heating power cord affects the accuracy of the position due to equipment vibration.

[0094] This embodiment also provides a continuous furnace 200, such as Figure 12 As shown, the continuous furnace 200 includes the aforementioned position detection device 10. In this case, the fixed wall can be the furnace wall of the continuous furnace 200. The continuous furnace 200 provided in this embodiment has high position detection accuracy.

[0095] This embodiment also provides a continuous furnace 200, which may include the position detection device 10 described above, as well as the cooling device described above.

[0096] Note that the above are merely preferred embodiments and the technical principles employed in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. Therefore, although this application has been described in detail through the above embodiments, this application is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of this application, the scope of which is determined by the scope of the appended claims.

Claims

1. A position detection device, characterized in that, include: A fixing mechanism (1) is provided with a through hole (11) along a first direction (X), and the fixing mechanism (1) is configured to be installed on a fixing wall; The swing mechanism (2) includes a rotating shaft (21) and a toggle member (22). The rotating shaft (21) is rotatably inserted through the through hole (11). The rotating shaft (21) includes a first end (211) located inside the fixed wall and a second end (212) located outside the fixed wall. The toggle member (22) is connected to the first end (211). The detection mechanism (3) includes a swing member (31), an elastic reset member (32), and multiple contacts (33). One end of the swing member (31) is connected to the second end (212). One end of the elastic reset member (32) is connected to the fixing mechanism (1), and the other end is connected to the swing member (31). The swing member (31) can make electrical contact with any of the contacts (33). The actuating element (22) moves under external force, causing the rotating shaft (21) to rotate relative to the fixed mechanism (1), thereby causing the swinging element (31) to be electrically connected to one of the contacts (33).

2. The position detection device according to claim 1, characterized in that, Two elastic reset members (32) are provided. One end of each elastic reset member (32) is connected to both sides of the swing member (31) in the width direction. One end of the swing member (31) is connected to the rotating shaft (21). The other end of the swing member (31) can be electrically connected to the contact (33). The elastic reset member (32) and the swing member (31) are connected at the two ends.

3. The position detection device according to claim 1, characterized in that, At least two of the contacts (33) are arranged circumferentially along the fixing mechanism (1).

4. The position detection device according to claim 1, characterized in that, The detection mechanism (3) further includes a support plate (34), which is connected to the fixing mechanism (1), and the contact point (33) is disposed on the support plate (34).

5. The position detection device according to claim 4, characterized in that, The support plate (34) has an arc-shaped structure, and at least two contacts (33) include a first contact (331) and a plurality of second contacts (332); the plurality of second contacts (332) are symmetrically arranged on the support plate (34); The actuating member (22) has a free position and multiple force-bearing positions; when the actuating member (22) is in the free position, the swing member (31) is electrically connected to the first contact (331); the force-bearing positions correspond one-to-one with the second contact (332), and when the swing member (31) is in the force-bearing position, the swing member (31) is electrically connected to the corresponding second contact (332).

6. The position detection device according to claim 4, characterized in that, The support plate (34) is slidably connected to the fixing mechanism (1) along the first direction (X), and an elastic element (4) is provided between the support plate (34) and the fixing mechanism (1).

7. The position detection device according to claim 1, characterized in that, The actuating element (22) is provided with a first strip hole (221), and the rotating shaft (21) is connected to the actuating element (22) through at least two first fasteners (51) passing through the first strip hole (221); And / or, the swing member (31) is provided with a second strip hole (311), and the rotating shaft (21) is connected to the swing member (31) by at least two second fasteners (52) passing through the second strip hole (311).

8. The position detection device according to claim 1, characterized in that, The fixing mechanism (1) includes a fixing seat (12), a sealing seat (13), and a sealing assembly (14); the fixing seat (12) is installed on the fixing wall; the sealing seat (13) is fixedly connected to one side of the fixing seat (12) in the first direction (X); the through hole (11) includes a first sub-hole (111) provided in the fixing seat (12) and a second sub-hole (112) provided in the sealing seat (13); at least a portion of the sealing assembly (14) is provided between the rotating shaft (21) and the hole wall of the second sub-hole (112); The elastic reset member (32) is located on the side of the sealing seat (13) away from the fixed seat (12) and is connected to the sealing seat (13). The contact point (33) is located on the sealing seat (13).

9. The position detection device according to claim 8, characterized in that, The sealing assembly (14) includes an oil ring (141), a first sealing ring, and a second sealing ring, all located between the rotating shaft (21) and the hole wall of the second sub-hole (112). The first sealing ring and the second sealing ring are located on both sides of the oil ring (141) in the first direction (X). The sealing assembly (14) further includes a pressure ring (144). The wall of the first sub-hole (111) is provided with a boss (131). The first sealing ring abuts against the boss (131). One end of the pressure ring (144) extends between the rotating shaft (21) and the wall of the second sub-hole (112) and abuts against the second sealing ring. The other end of the pressure ring (144) is connected to the sealing seat (13) by a third fastener (53).

10. A continuous furnace, characterized in that, The continuous furnace includes a position detection device as described in any one of claims 1-9; the fixed wall is the furnace wall of the continuous furnace.

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