Sheet medium thickness detection device

Abstract

The utility model provides a slice medium thickness detection device, which comprises a fixed seat, a connecting rod, a floating assembly, a rotating roller and a sensor assembly, and is characterized in that the connecting rod is fixedly connected with the fixed seat; the floating assembly comprises a floating support and a floating roller, the connecting rod is sleeved with the floating support, the floating support can swing relative to the connecting rod, and the floating roller is rotationally arranged on the floating support; the rotating roller, the floating assembly and the fixed seat are arranged in sequence, and the rotating roller can rotate relative to the fixed seat; the floating assembly has a contact position and a separation position, and at the contact position, the floating roller makes contact with the rotating roller to seal the detection channel; at the separation position, the floating roller and the rotating roller can be separated so that the slice medium can pass through the detection channel; the sensor assembly is used for detecting displacement of the floating assembly relative to the rotating roller; the slice medium thickness detection device provided by the embodiment of the utility model has the advantages of small assembly difficulty, capability of accurately identifying slice media with abnormal thickness, and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to thickness detection equipment technical field especially relates to a sheet medium thickness detection device. BACKGROUND

[0002] Traditional sheet medium thickness detection method is difficult to accurately distinguish the sheet medium with foreign matter or pasting, especially when the sheet medium sticks with adhesive tape, since the thickness change of adhesive tape part is smaller, traditional equipment often cannot effectively detect. In order to solve this problem, the prior art usually relies on extremely high part machining precision (need to reach IT4 level or more), to ensure the close fit between floating bearing and rotating shaft. But since the cumulative tolerance of each part after assembly often exceeds the design tolerance, it cannot guarantee the complete fit of floating bearing and rotating shaft, so that the sheet medium with abnormal thickness cannot be accurately detected. SUMMARY

[0003] The utility model provides a sheet medium thickness detection device to solve the defect of sheet medium thickness detection equipment detection result inaccuracy in prior art, to improve the accuracy of sheet medium thickness detection.

[0004] The utility model provides a sheet medium thickness detection device, which comprises:

[0005] A fixed seat;

[0006] A connecting rod, which is fixedly connected with the fixed seat;

[0007] A floating assembly, which comprises a floating bracket and a floating roller, the floating bracket is sleeved on the connecting rod and can swing relative to the connecting rod, and the floating roller is rotatably arranged on the floating bracket;

[0008] A rotating roller, which is arranged in sequence with the floating assembly and the fixed seat, and can rotate relative to the fixed seat;

[0009] The floating assembly has a contact position and a separation position, at the contact position, the floating roller contacts with the rotating roller to close the detection channel, and at the separation position, the floating roller can be separated from the rotating roller so that the sheet medium can pass through the detection channel;

[0010] A sensor assembly, which is used for detecting the displacement of the floating assembly relative to the rotating roller.

[0011] In some embodiments, the cross section of the connecting rod is circular, the floating bracket is provided with a first movable hole, the first movable hole cooperates with the connecting rod, and the diameter of the first movable hole is greater than the diameter of the connecting rod.

[0012] In some embodiments, the floating support is provided with a second movable hole and a third movable hole, the second movable hole and the third movable hole are matched with the connecting rod, the second movable hole, the first movable hole and the third movable hole are sequentially and spacedly arranged along a first direction, the second movable hole and the third movable hole have a dimension greater than the diameter of the connecting rod along a second direction, the second movable hole and the third movable hole have a dimension same as the diameter of the connecting rod along a third direction, the first direction is consistent with the extending direction of the connecting rod, and any two of the first direction, the second direction and the third direction are perpendicular to each other.

[0013] In some embodiments, the floating assembly comprises an elastic member, the first movable hole and the second movable hole are spacedly arranged along the first direction to limit a first groove, the first movable hole and the third movable hole are spacedly arranged along the first direction to limit a second groove, the first groove and the second groove are both provided with the elastic member, one end of the elastic member is connected to the fixed seat, the other end of the elastic member is connected to the floating support, and the elastic member has an acting force to promote the floating assembly to move from the separated position to the contacted position.

[0014] In some embodiments, the first groove and the second groove are both provided with a stop surface adjacent to one side of the rotating roller along the second direction, the first groove and the second groove are both provided with an open side adjacent to one side of the fixed seat along the second direction, and the connecting rod passes through the first groove and the second groove.

[0015] The elastic member is a torsion spring, the torsion spring has a ring-shaped portion and two stop portions, the ring-shaped portion is sleeved on the connecting rod, and the inner circumferential surface of the ring-shaped portion is spacedly arranged from the inner circumferential surface of the connecting rod, and the two stop portions are respectively in abutment with the fixed seat and the stop surface.

[0016] In some embodiments, the floating support is provided with a mounting shaft extending along the first direction, and the floating roller is sleeved on the mounting shaft.

[0017] In some embodiments, the sheet medium thickness detection device comprises a connecting member extending along the second direction, one end of the connecting member is fixedly connected to the fixed seat, and the other end of the connecting member is fixedly connected to one end of the connecting rod.

[0018] In some embodiments, the sensor assembly comprises a magnet and a Hall sensor, the magnet is arranged on the side of the floating support adjacent to the fixed seat, the Hall sensor is arranged on the fixed seat, and the magnet and the Hall sensor are oppositely and spacedly arranged along the second direction.

[0019] In some embodiments, the fixed seat has a first end face and a second end face oppositely arranged in the second direction, the first end face is arranged adjacent to the floating assembly, the fixed seat is provided with a strip-shaped hole penetrating through the fixed seat along the second direction, the Hall sensor is arranged on the second end face, and the magnet, the strip-shaped hole and the Hall sensor are opposite in the second direction.

[0020] In some embodiments, the connecting rods are multiple, the multiple connecting rods are arranged at intervals along the first direction, the floating assemblies are multiple, and the sensor assemblies are multiple, the multiple floating assemblies correspond to and are connected with the multiple connecting rods one by one, and the multiple sensor assemblies correspond to the multiple floating assemblies one by one.

[0021] The device sheet medium thickness detection device in the utility model is installed, because the floating roller can move in the up-down direction, the floating roller can be naturally matched with the rotating roller when the floating roller moves to the contact position, so that the influence of assembly tolerance on the matching effect is avoided, the installation precision of the floating roller is not required to be too high, so that the installation process is greatly simplified, the assembly difficulty and the design requirement are reduced. Moreover, the displacement change of the floating assembly can be monitored in real time through the sensor assembly, so that the thickness difference of the sheet medium is accurately captured, and the sheet medium with abnormal thickness is identified. Therefore, the sheet medium thickness detection device in the utility model embodiment has the advantages of small assembly difficulty and accurate identification of sheet medium with abnormal thickness. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0023] Figure 1 It is the explosion schematic view of the sheet medium thickness detection device provided by the utility model.

[0024] Figure 2 It is the right view schematic view of the sheet medium thickness detection device provided by the utility model.

[0025] Figure 3 It is the working state schematic view of the sheet medium thickness detection device provided by the utility model, wherein the fixed seat is removed.

[0026] Figure 4 It is the structure schematic view of the floating assembly of the sheet medium thickness detection device provided by the utility model.

[0027] Figure 5 is the right view schematic diagram of the floating assembly of the sheet medium thickness detection device provided by the utility model.

[0028] Figure 6 is the cooperation schematic diagram of the first movable hole, the second movable hole, the third movable hole and the connecting rod of the sheet medium thickness detection device provided by the utility model.

[0029] Reference signs:

[0030] 100, sheet medium thickness detection device; 101, sheet medium; 1, fixed seat; 11, first end face; 12, second end face; 13, strip-shaped hole; 2, connecting rod; 3, floating assembly; 31, floating support; 311, first movable hole; 312, second movable hole; 313, third movable hole; 314, first recess; 315, second recess; 316, stop surface; 317, mounting shaft; 32, floating roller; 33, elastic piece; 4, rotating roller; 5, sensor assembly; 51, magnet; 52, hall sensor; 6, circuit board; 7, driving wheel. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] As Figures 1 to 6 shown, the embodiment of the utility model discloses a sheet medium thickness detection device 100, including fixed seat 1, connecting rod 2, floating assembly 3, rotating roller 4 and sensor assembly 5.

[0033] Connecting rod 2 is fixedly connected with fixed seat 1, connecting rod 2 extends along the first direction, and connecting rod 2 is arranged in the second direction with fixed seat 1, and the second direction is perpendicular to the first direction.

[0034] Floating assembly 3 includes floating support 31 and floating roller 32, floating support 31 is sleeved on connecting rod 2, floating support 31 can swing along the second direction relative to connecting rod 2, floating roller 32 is rotatably arranged on floating support 31, floating roller 32 rotates around the first direction, and floating support 31 is arranged in the second direction with fixed seat 1.

[0035] Rotating roller 4, floating assembly 3 and fixed seat 1 are sequentially arranged, rotating roller 4 can rotate relative to fixed seat 1, and rotating roller 4 can rotate around the first direction.

[0036] The floating assembly 3 has a contact position and a separation position. In the contact position, the floating roller 32 contacts the rotating roller 4 to close the detection channel, which extends in a third direction perpendicular to the first direction and the second direction. In the separation position, the floating roller 32 can be separated from the rotating roller 4 so that the sheet medium 101 passes through the detection channel.

[0037] The sensor assembly 5 is used to detect the displacement of the floating assembly 3 relative to the rotating roller 4, and the sensor assembly 5 detects the displacement of the floating assembly 3 in the second direction

[0038] In order to make the technical solutions of the present application easier to be understood, the technical solutions of the present application are further described below by taking the first direction as the left-right direction, the second direction as the up-down direction, and the third direction as the front-back direction, wherein the left-right direction, the up-down direction, and the front-back direction are as shown in the accompanying drawings. Figure 1

[0039] The connecting rod 2 extends in the left-right direction and is fixedly connected to the fixed seat 1 by bolts or other means. The connecting rod 2 and the fixed seat 1 are spaced apart in the up-down direction, so as to avoid the fixed seat 1 interfering with the movement of the floating assembly 3.

[0040] The axis of the floating roller 32 extends in the left-right direction. The floating roller 32 is arranged on the floating bracket 31 and can rotate relative to the floating bracket 31. The floating bracket 31 can move relative to the connecting rod 2 in the up-down direction.

[0041] The rotating roller 4, the floating assembly 3, and the fixed seat 1 are arranged in sequence from bottom to top. The axis of the rotating roller 4 extends in the left-right direction. The bottom of the floating roller 32 and the top of the rotating roller 4 can contact or separate, so as to open or close the detection channel. One end of the rotating roller 4 is provided with a driving wheel 7 connected to a driver. The driver drives the driving wheel 7 to rotate, and in turn drives the rotating roller 4 to rotate.

[0042] The sensor assembly 5 monitors the displacement of the floating assembly 3 in the up-down direction in real time, and calculates the thickness of the sheet medium 101 by detecting the position change of the floating assembly 3 relative to the rotating roller 4. The sensor assembly 5 can be a Hall effect sensor, a photoelectric sensor, or other types of displacement sensors, which can convert physical displacement into electrical signals, and in turn calculate the specific thickness value. Optionally, the sheet medium thickness detection device 100 further comprises a controller.

[0043] The sheet medium 101 is a banknote or other articles with a structure similar to a banknote.

[0044] ​The sheet medium thickness detection device 100 in the embodiment of the utility model is in work, when there is no sheet medium 101 to enter, the floating assembly 3 is in the contact position, namely there is no gap between the floating roller 32 and the rotating roller 4.At this time, the sensor assembly 5 detects the position of the floating assembly 3 relative to the rotating roller 4, and takes this position information as the first reference point.

[0045] When the sheet medium 101 enters the detection channel along the front-back direction, since the rotating roller 4 and the floating roller 32 can rotate, they will rotate with the entering of the sheet medium 101, thereby guiding the sheet medium 101 to advance.At the same time, the sheet medium 101 pushes the floating assembly 3 to move upward, and the sensor assembly 5 detects the position change of the floating assembly 3 relative to the rotating roller 4, and takes this position information as the second reference point.The controller processes the first reference point and the second reference point, thereby obtaining the displacement of the floating assembly 3.

[0046] If there is a tape or other abnormal thickness part on the sheet medium 101, the floating assembly 3 will make a corresponding displacement according to the actual thickness, and the sensor assembly 5 can accurately capture this change, thereby identifying the abnormal situation.If the sensor assembly 5 detects that the thickness of the sheet medium 101 exceeds the preset range, the sheet medium thickness detection device 100 can trigger an alarm or take other measures, such as stopping the bill feeding, to ensure that the abnormal sheet medium 101 can be processed in time.

[0047] The sheet medium thickness detection device 100 in the embodiment of the utility model can be attached with the rotating roller 4 when installed, without the need to set a gap, and the thickness change of the sheet medium 101 can be reflected through the displacement change of the floating assembly 3, without the need for precise installation.

[0048] The conventional sheet medium 101 thickness detection method is difficult to accurately distinguish the sheet medium 101 with foreign matter or sticking material, especially when the sheet medium 101 is stuck with a tape, since the thickness change of the tape part is small, the conventional equipment often cannot effectively detect.In order to solve this problem, the existing technology usually relies on extremely high part machining precision (needs to reach IT4 level or above) to ensure the close attachment between the floating bearing and the rotating shaft.However, since the cumulative tolerance of each part after assembly often exceeds the design tolerance, it cannot guarantee the complete attachment of the floating bearing and the rotating shaft, thereby failing to accurately detect the sheet medium 101 with abnormal thickness.

[0049] The device sheet medium thickness detection device 100 is capable of being naturally attached with the rotating roller 4 when the floating roller 32 is moved downwards to the contact position, so that the influence of assembly tolerance on the attachment effect is avoided, and the installation precision of the floating roller 32 is not required to be too high, so that the installation process is greatly simplified, and the assembly difficulty and design requirement are reduced. Moreover, the displacement change of the floating assembly 3 can be monitored in real time through the sensor assembly 5, so that the thickness difference of the sheet medium 101 is accurately captured, and the sheet medium 101 with abnormal thickness is identified.

[0050] Therefore, the sheet medium thickness detection device 100 has the advantages of small assembly difficulty and being capable of accurately identifying the sheet medium 101 with abnormal thickness.

[0051] In some embodiments, the cross section of the connecting rod 2 is circular, the floating support 31 is provided with a first movable hole 311, the first movable hole 311 is matched with the connecting rod 2, and the diameter of the first movable hole 311 is greater than the diameter of the connecting rod 2.

[0052] For example, as shown in Figure 2 and Figure 6 , the connecting rod 2 is cylindrical. The inner peripheral wall of the first movable hole 311 and the outer peripheral wall of the connecting rod 2 are arranged at intervals, so that the floating roller 32 can swing relative to the connecting rod 2.

[0053] In some embodiments, the floating support 31 is provided with a second movable hole 312 and a third movable hole 313, the second movable hole 312 and the third movable hole 313 are matched with the connecting rod 2, the second movable hole 312, the first movable hole 311 and the third movable hole 313 are sequentially and spacedly arranged along the first direction, the size of the second movable hole 312 and the third movable hole 313 in the second direction is greater than the diameter of the connecting rod 2, and the size of the second movable hole 312 and the third movable hole 313 in the third direction is the same as the diameter of the connecting rod 2.

[0054] For example, as shown in Figure 1 , Figure 3 and Figure 6 , the second movable hole 312 is arranged on the left side of the first movable hole 311, and the third movable hole 313 is arranged on the right side of the first movable hole 311. The size of the second movable hole 312 and the third movable hole 313 in the up-down direction is greater than the diameter of the connecting rod 2, and there is a certain gap between them, so that the floating roller 32 and the floating support 31 can swing relative to the connecting rod 2 in the up-down direction.

[0055] The second movable hole 312 and the third movable hole 313 are equal in size to the diameter of the connecting rod 2 in the front-rear direction, thereby limiting the swing of the floating support 31 in the front-rear direction, and further limiting the swing of the floating roller 32 in the front-rear direction, so that the floating roller 32 can only swing in the up-down direction.

[0056] The sheet medium thickness detection device 100 according to the embodiment of the present application is provided with the second movable hole 312 and the third movable hole 313 on the floating support 31, so that the floating assembly 3 can swing to the left upper side or the right upper side. When the left side of the sheet medium 101 is thicker, the floating assembly 3 will swing to the left upper side. Similarly, when the right side of the sheet medium 101 is thicker, the floating assembly 3 will swing to the right upper side, thereby enhancing the detection capability of the sheet medium thickness detection device 100 on the thickness change of the sheet medium 101 at different positions, and improving the detection range of the sheet medium thickness detection device 100.

[0057] In some embodiments, the floating assembly 3 includes the elastic member 33, the first movable hole 311 and the second movable hole 312 are spaced apart in the first direction to limit the first groove 314, the first movable hole 311 and the third movable hole 313 are spaced apart in the first direction to limit the second groove 315, the elastic member 33 is arranged in the first groove 314 and the second groove 315, one end of the elastic member 33 is connected to the fixed seat 1, the other end of the elastic member 33 is connected to the floating support 31, and the elastic member 33 has an acting force for moving the floating assembly 3 from the separated position to the contact position.

[0058] For example, as shown in Figure 1 and Figure 4 The first movable hole 311 and the second movable hole 312 are provided with the first groove 314, and the first movable hole 311 and the third movable hole 313 are provided with the second groove 315. The elastic member 33 has an acting force for moving the floating assembly 3 downward, thereby the sheet medium thickness detection device 100 according to the embodiment of the present application, the arrangement of the elastic member 33 ensures that the floating assembly 3 can automatically move from the separated position to the contact position. When the sheet medium 101 passes through the detection channel, the restoring force provided by the elastic member 33 will immediately push the floating assembly 3 back to the contact position, close the detection channel, and prepare to welcome the next sheet medium 101. This automatic reset function improves the working efficiency of the sheet medium thickness detection device 100, ensures that only one sheet medium 101 is processed each time, and avoids the situation that multiple sheet media 101 enter at the same time. Moreover, the elastic member 33 can effectively limit the rebound amplitude of the floating assembly 3, avoid unnecessary bouncing of the floating assembly 3, and ensure the stability and consistency of the floating assembly 3 in the working process.

[0059] In some embodiments, the first groove 314 and the second groove 315 are each provided with an abutting surface 316 adjacent to one side of the rotating roller 4 in the second direction, and are each open to one side of the fixed seat 1 in the second direction, and the connecting rod 2 passes through the first groove 314 and the second groove 315.

[0060] The elastic member 33 is a torsion spring, which has a ring-shaped portion and two abutting portions, the ring-shaped portion is sleeved on the connecting rod 2, and the inner circumferential surface of the ring-shaped portion is spaced apart from the inner circumferential surface of the connecting rod 2, and the two abutting portions are respectively abutted against the fixed seat 1 and the abutting surface 316.

[0061] For example, as shown in Figure 1 and Figure 4 , the bottom of the first groove 314 and the second groove 315 is provided with an abutting surface 316, and the top of the first groove 314 and the second groove 315 is open, and the connecting rod 2 passes through the first movable hole 311, the second movable hole 312 and the third movable hole 313, and also passes through the first groove 314 and the second groove 315. The first groove 314 and the second groove 315 are each provided with an elastic member 33. The elastic member 33 is a torsion spring, which has a ring-shaped portion and two abutting portions, the ring-shaped portion is sleeved on the connecting rod 2, and the inner circumferential surface of the ring-shaped portion is spaced apart from the inner circumferential surface of the connecting rod 2, and the two abutting portions are respectively abutted against the fixed seat 1 and the abutting surface 316.

[0062] Therefore, the sheet medium thickness detection device 100 of the embodiment of the utility model, the torsion spring is arranged in the first groove 314 and the second groove 315, avoids occupying the space outside the floating support 31, makes the structure of the floating assembly 3 compact, small in size, thereby reduce the volume of the sheet medium thickness detection device 100.

[0063] In some embodiments, the floating support 31 is provided with a mounting shaft 317 extending in the first direction, and the floating roller 32 is sleeved on the mounting shaft 317. For example, as shown in Figure 2 and Figure 4 , the mounting shaft 317 extends in the left-right direction, the mounting shaft 317 is fixed on the floating support 31, the floating roller 32 is sleeved on the mounting shaft 317, and can rotate relative to the floating support 31.

[0064] In other embodiments, the floating bracket 31 is provided with a mounting cavity, and the mounting shaft 317 and the floating roller 32 are both disposed within the mounting cavity. The mounting cavity and the first movable hole 311 are arranged sequentially in the front-back direction. On a first projection plane perpendicular to the front-back direction, the projection of the upper end of the mounting cavity coincides with the projection of a portion of the first movable hole 311. Thus, in the vertical direction, the mounting cavity and the first movable hole 311 share the same space, making the structure of the floating assembly 3 compact and thereby improving the space utilization of the thin film medium thickness detection device 100.

[0065] In some embodiments, the sheet medium thickness detection device 100 includes a connector (not shown in the figure), which extends along a second direction. One end of the connector is fixedly connected to the fixed base 1, and the other end of the connector is fixedly connected to one end of the connecting rod 2.

[0066] The connector extends in the vertical direction. One end of the connector is bolted or welded to the fixed base 1, and the other end of the connector is bolted or snapped to the connecting rod 2. Thus, the connector enables the connecting rod 2 to be fixedly connected to the fixed base 1 and to be spaced apart from the fixed base 1.

[0067] Optionally, both ends of the connecting rod 2 are connected to the fixed base 1 via connectors. Alternatively, one end of the connecting rod 2 is connected to the fixed base 1 via a connector, and the other end of the connecting rod 2 is suspended in the air.

[0068] In some embodiments, the sensor assembly 5 includes a magnet 51 and a Hall sensor 52. The magnet 51 is disposed on the side of the floating bracket 31 adjacent to the fixed base 1, and the Hall sensor 52 is disposed on the fixed base 1. The magnet 51 and the Hall sensor 52 are opposite to each other and spaced apart in a second direction.

[0069] For example, such as Figure 1 As shown, magnet 51 is located at the top of floating support 31, and magnet 51 and Hall sensor 52 are positioned opposite each other and spaced apart in the vertical direction. When the floating assembly 3 swings up and down according to the thickness change of the thin medium 101, the relative distance between magnet 51 and Hall sensor 52 also changes. Hall sensor 52 can detect this distance change in real time and convert the change in magnetic flux into an electrical signal, thereby calculating the specific displacement of floating assembly 3 and accurately capturing the thickness difference of thin medium 101.

[0070] In some embodiments, the fixing base 1 has a first end face 11 and a second end face 12 disposed opposite to each other in a second direction. The first end face 11 is disposed adjacent to the floating component 3. The fixing base 1 is provided with a strip hole 13 that penetrates the fixing base 1 in a second direction. The Hall sensor 52 is disposed on the second end face 12. The magnet 51, the strip hole 13 and the Hall sensor 52 are opposite to each other in the second direction.

[0071] For example, such asFigure 1 As shown in the drawings, the first end surface 11 is arranged below the second end surface 12, the strip-shaped hole 13 extends along the left-right direction, and the magnet 51, the strip-shaped hole 13 and the Hall sensor 52 are arranged correspondingly in the up-down direction, so that the strip-shaped hole 13 not only facilitates the corresponding relationship between the magnet 51 and the Hall sensor 52, but also reduces the weight of the fixing seat 1.

[0072] In some embodiments, the connecting rods 2 are multiple, the multiple connecting rods 2 are arranged at intervals along the first direction, the floating assemblies 3 are multiple, the sensor assemblies 5 are multiple, the multiple floating assemblies 3 correspond to and are connected with the multiple connecting rods 2 one by one, and the multiple sensor assemblies 5 correspond to the multiple floating assemblies 3 one by one.

[0073] For example, as shown in the drawings, the multiple connecting rods 2 are arranged in sequence along the left-right direction, each connecting rod 2 is provided with a floating assembly 3, and each floating assembly 3 is arranged opposite to the corresponding sensor assembly 5. Figure 1 Figure 1

[0074] The sheet medium thickness detection device 100 of the embodiment of the utility model, through setting multiple connecting rods 2, floating assemblies 3 and sensor assemblies 5, so that multiple sheet media 101 can be detected in thickness simultaneously, and the detection efficiency is improved.

[0075] Optionally, the fixing seat 1 is provided with a circuit board 6 above, and the Hall sensor 52 is arranged on the circuit board 6.

[0076] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.​

Claims

1. A device for detecting the thickness of a thin-film medium, characterized in that, include: Fixed base; A connecting rod, which is fixedly connected to the fixed base; A floating assembly, comprising a floating bracket and a floating roller, wherein the floating bracket is sleeved on the connecting rod and can swing relative to the connecting rod, and the floating roller is rotatably mounted on the floating bracket; A rotating roller, the floating assembly, and the fixed base are arranged in sequence, and the rotating roller can rotate relative to the fixed base; The floating component has a contact position and a separation position. In the contact position, the floating roller contacts the rotating roller to close the detection channel. At the separation position, the floating roller and the rotating roller can separate to allow the sheet medium to pass through the detection channel; A sensor assembly for detecting the displacement of the floating assembly relative to the rotating roller.

2. The sheet dielectric thickness detection device according to claim 1, characterized in that, The connecting rod has a circular cross-section, and the floating bracket is provided with a first movable hole. The first movable hole cooperates with the connecting rod, and the diameter of the first movable hole is larger than the diameter of the connecting rod.

3. The sheet medium thickness detection device according to claim 2, characterized in that, The floating support is provided with a second movable hole and a third movable hole, both of which mate with the connecting rod. The second movable hole, the first movable hole, and the third movable hole are arranged sequentially at intervals along a first direction. The dimensions of the second movable hole and the third movable hole in the second direction are both larger than the diameter of the connecting rod. The dimensions of the second movable hole and the third movable hole in the third direction are both the same as the diameter of the connecting rod. The first direction is consistent with the extension direction of the connecting rod, and any two of the first direction, the second direction, and the third direction are perpendicular to each other.

4. The sheet dielectric thickness detection device according to claim 3, characterized in that, The floating component includes an elastic element. The first movable hole and the second movable hole are spaced apart in the first direction to limit a first groove. The first movable hole and the third movable hole are spaced apart in the first direction to limit a second groove. The elastic element is provided in both the first groove and the second groove. One end of the elastic element is abutted to the fixed seat, and the other end of the elastic element is abutted to the floating bracket. The elastic element has a force that causes the floating component to move from the separation position to the contact position.

5. The sheet dielectric thickness detection device according to claim 4, characterized in that, Both the first groove and the second groove have a stop surface on the side adjacent to the rotating roller in the second direction, and both the first groove and the second groove are open on the side adjacent to the fixed seat in the second direction, and the connecting rod passes through the first groove and the second groove; The elastic element is a torsion spring, which has an annular portion and two stop portions. The annular portion is sleeved on the connecting rod, and the inner circumferential surface of the annular portion is spaced apart from the inner circumferential surface of the connecting rod. The two stop portions abut against the fixing seat and the stop surface, respectively.

6. The sheet medium thickness detection device according to any one of claims 3-5, characterized in that, The floating support is provided with a mounting shaft extending along the first direction, and the floating roller is sleeved on the mounting shaft.

7. The sheet dielectric thickness detection device according to claim 3, characterized in that, The thin-film medium thickness detection device includes a connector that extends along the second direction. One end of the connector is fixedly connected to the fixed base, and the other end of the connector is fixedly connected to one end of the connecting rod.

8. The sheet dielectric thickness detection device according to claim 3, characterized in that, The sensor assembly includes a magnet and a Hall sensor. The magnet is disposed on one side of the floating bracket adjacent to the fixed base, and the Hall sensor is disposed on the fixed base. The magnet and the Hall sensor are positioned opposite each other and spaced apart in the second direction.

9. The sheet dielectric thickness detection device according to claim 8, characterized in that, The fixing base has a first end face and a second end face that are disposed opposite to each other in the second direction. The first end face is disposed adjacent to the floating component. The fixing base is provided with a strip hole that penetrates the fixing base along the second direction. The Hall sensor is disposed on the second end face. The magnet, the strip hole and the Hall sensor are opposite to each other in the second direction.

10. The sheet medium thickness detection device according to claim 3, characterized in that, There are multiple connecting rods, which are spaced apart along the first direction. There are multiple floating components and multiple sensor components. Each of the multiple floating components corresponds to and is connected to one of the multiple connecting rods, and each of the multiple sensor components corresponds to one of the multiple floating components.

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