A sensor processing device

Abstract

The application belongs to the technical field of sensor processing, and discloses a sensor processing device which comprises a polishing mechanism and a clamping mechanism which cooperate with each other. The polishing mechanism comprises a fixed support and a polishing head connected with the fixed support through a driving assembly, and the driving assembly comprises a rotating assembly, a first moving assembly and a second moving assembly. The clamping mechanism comprises a fixed ring and N clamping plates which can move radially along the fixed ring, and a limiting assembly is connected between each clamping plate and the fixed ring. In summary, the sensor processing device provided by the application can realize full-automatic polishing of the packaging steps in the sensor shell through the cooperation of the polishing mechanism and the clamping mechanism, and the polishing head can be flexibly polished in different directions through the driving of the structures such as the rotating assembly, the first moving assembly and the second moving assembly in the polishing mechanism, so as to be flexibly applicable to the accurate polishing of packaging steps of different sizes.

Description

Technical Field

[0001] This invention belongs to the field of sensor processing technology, and specifically relates to a sensor processing device. Background Technology

[0002] Existing sensors typically consist of a housing and an electronic sensing element encapsulated within the housing. Taking a pressure sensor as an example, the electronic sensing element inside the housing mainly includes a deformable diaphragm and a chip for sensing the deformation of the diaphragm. Specifically, before encapsulating the diaphragm and chip of the pressure sensor, it is necessary to process and form a structure such as... Figure 1 The packaging steps shown typically involve mounting the chip at step a / b and the diaphragm at step c. Therefore, to ensure the accuracy of the chip's sensing of diaphragm deformation, further adjustments are needed before actual packaging. Figure 1 The encapsulation steps shown are precision polished. Based on this, this application provides a sensor processing device that can be flexibly applied to polishing encapsulation steps of multiple sizes. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention aims to provide a sensor processing apparatus.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A sensor processing apparatus includes a grinding mechanism and a clamping mechanism that cooperate with each other;

[0006] The grinding mechanism includes a fixed bracket and a grinding head connected to the fixed bracket via a drive assembly, and the drive assembly includes a rotating assembly, a first moving assembly, and a second moving assembly.

[0007] The clamping mechanism includes a fixed ring and N clamping plates that can move radially along the fixed ring, and each clamping plate is connected to the fixed ring by a limit assembly.

[0008] Preferably, the rotating assembly includes a mounting sleeve rotatably mounted on a fixed bracket and a drive gear, the drive gear being driven to rotate by a rotary motor fixed on the fixed bracket, and the drive gear meshing with the inner wall of the mounting sleeve.

[0009] Preferably, the first moving component includes a first electric push rod fixed on a fixed bracket and a slide plate axially slidably installed in the mounting sleeve. A connecting ring is rotatably installed on one side of the slide plate, and the telescopic end of the first electric push rod is fixedly connected to the connecting ring.

[0010] Preferably, the second moving component includes a carriage that is radially slidably connected to the slide plate, and the grinding head is fixed to the free end of the carriage.

[0011] Preferably, the second moving component further includes a lead screw rotatably mounted radially within the mounting sleeve, wherein a slide is helically sleeved on the lead screw, and the slide is axially slidably connected to the carriage.

[0012] Preferably, there are two slides and two slide blocks symmetrically provided, the lead screw has two threaded portions with opposite thread directions, and the two slide blocks are respectively screwed onto the two threaded portions.

[0013] Preferably, the second moving component further includes a second electric push rod fixed to the fixed bracket, the telescopic end of the second electric push rod being fixedly connected to a toothed sleeve, and the toothed sleeve being coaxially sleeved outside the mounting sleeve.

[0014] Preferably, the second moving component further includes a small bevel gear and a large bevel gear rotatably mounted on the outside of the mounting sleeve, wherein the small bevel gear is used to drive the lead screw to rotate, and the large bevel gear is used to mesh with the gear sleeve and the small bevel gear, and to enable the large bevel gear to rotate around the central axis of the gear sleeve.

[0015] Preferably, two drive wheels are provided on the outside of the mounting sleeve. The two drive wheels are fixed coaxially with the small bevel gear and the lead screw, respectively, and belts are connected to the two drive wheels for transmission.

[0016] Preferably, the limiting component includes N threaded sleeves that rotatably pass through the fixed ring, each threaded sleeve having a threaded rod screwed through it, and N clamping plates fixed one-to-one on the N threaded rods.

[0017] Preferably, the limiting assembly further includes a limiting toothed ring coaxially rotatably mounted on the fixed ring, a spiral spring connecting the limiting toothed ring and the fixed ring, and N threaded sleeves all meshing with one side of the limiting toothed ring.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] (1) The fully automatic grinding of the encapsulation steps inside the sensor housing is achieved by the cooperation of the grinding mechanism and the clamping mechanism. In the grinding mechanism, the grinding head can flexibly achieve grinding feed in different directions by using the drive of the rotating component, the first moving component and the second moving component, etc., so as to be flexibly applicable to the precise grinding of encapsulation steps of different sizes.

[0020] (2) The drive gear, the first electric push rod, the second electric push rod and other electric drive structures are all installed on the fixed bracket, and the independent drive of the grinding head is achieved by the installation sleeve, the slide plate, the slide, the lead screw and the gear sleeve, etc., in combination. This effectively simplifies the installation complexity of the electric drive structure in the overall processing device and reduces the installation and maintenance costs of the electric structure.

[0021] (3) A bevel gear set and belt drive are installed between the lead screw and the gear sleeve to optimize the installation position of the gear sleeve, that is, to ensure that the gear sleeve fits on the upper part of the mounting sleeve, thereby avoiding the movement of the gear sleeve from interfering with the movement of the grinding head.

[0022] (4) The position of the clamping plate is limited by setting a meshing limiting tooth ring, a threaded sleeve and a threaded rod that screws through the threaded sleeve, and a spiral spring is connected between the limiting tooth ring and the fixed ring, so that the disassembly and assembly of the sensor housing is more convenient and stable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an existing sensor housing to be manufactured;

[0024] Figure 2 This is a perspective view of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of point A in the image;

[0026] Figure 4 This is a cross-sectional view of the grinding mechanism in this invention;

[0027] Figure 5 for Figure 4 Enlarged view of point B in the image;

[0028] Figure 6 This is a schematic diagram of the assembly of the first electric push rod, the sliding plate, and the connecting ring in this invention;

[0029] Figure 7 This is a schematic diagram of the assembly of the slide, lead screw, slide block and grinding head in this invention;

[0030] Figure 8 for Figure 7 Enlarged view of point C in the image;

[0031] Figure 9 This is a schematic diagram of the assembly structure of the lead screw, transmission wheel, small bevel gear and large bevel gear in this invention;

[0032] Figure 10 This is a cross-sectional view of the clamping mechanism in this invention;

[0033] In the diagram: Grinding mechanism-100; Fixed bracket-101; Grinding head-102; Mounting sleeve-103; Drive gear-104; First electric push rod-105; Slide plate-106; Connecting ring-107; Carriage-108; Lead screw-109; Slide base-110; Second electric push rod-111; Gear sleeve-112; Small bevel gear-113; Large bevel gear-114; Transmission wheel-115; Belt-116; Clamping mechanism-200; Fixed ring-201; Clamping plate-202; Threaded sleeve-203; Threaded rod-204; Limiting gear ring-205. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figure 2 As shown, the sensor processing apparatus provided by the present invention is mainly used to perform grinding treatment on the encapsulation steps inside the sensor housing, specifically including a grinding mechanism 100 and a clamping mechanism 200 that cooperate with each other.

[0036] Regarding clamping mechanism 200:

[0037] The clamping mechanism 200 is used to clamp and fix the shell to be polished. Specifically, as follows... Figure 10 As shown, the device includes a fixed ring 201 supported by a vertical plate. A limiting toothed ring 205, coaxially engaged with the fixed ring 201, is rotatably mounted on one side of the fixed ring 201. A spiral spring connects the limiting toothed ring 205 and the fixed ring 201. Additionally, N threaded sleeves 203 are circumferentially arranged and rotatably pass through the fixed ring 201. All N threaded sleeves 203 mesh with the limiting toothed ring 205, and a threaded rod 204 is screwed through each threaded sleeve 203. One end of the threaded rod 204 is fixed with a clamping plate 202, allowing the N clamping plates 202 to reciprocate radially within the fixed ring 201. Wherein, N ≥ 2, and in this invention… Figure 1 The diagram shows a structural example with N=3, which explains the specific installation of the casing to be polished:

[0038] In the initial position, the distance between the three clamping plates 202 is minimized due to the constraint of the spiral spring;

[0039] Manually rotate the limiting toothed ring 205. Through the rotation of the limiting toothed ring 205 and the meshing of the limiting toothed ring 205 with the threaded sleeve 203, the three threaded sleeves 203 are driven to rotate synchronously. At this time, the spiral spring is deformed, and the threaded rod 204 moves radially under the rotation drive of the threaded sleeve 203 (in order to prevent the threaded rod 204 from rotating, a limiting plate that slides radially with the fixed ring 201 is also connected on one side of the threaded rod 204), thereby driving the three clamping plates 202 to move away from each other.

[0040] Place the sensor housing to be polished between the three clamping plates 202, with the opening side of the sensor housing facing the polishing mechanism 100. Then release the limiting toothed ring 205. At this time, the limiting toothed ring 205 will rotate and reset under the rebound of the spiral spring, thereby driving the three clamping plates 202 to move closer to each other, thus clamping the sensor housing.

[0041] The engagement between the threaded sleeve 203 and the threaded rod 204 ensures the stability of the outer casing clamping.

[0042] The combination of its threaded sleeve 203, limiting toothed ring 205 and spiral spring makes it easier to clamp the outer shell.

[0043] Regarding the polishing mechanism 100:

[0044] The grinding mechanism 100 is used to precisely grind the various encapsulation steps inside the housing. (Reference) Figure 4 As shown, it includes a fixed bracket 101 supported by a vertical plate, and the fixed bracket 101 and the fixed ring 201 are arranged as follows: Figure 1 The coaxial fit shown.

[0045] like Figure 4 As shown, a rotating assembly is provided on the fixed bracket 101, and the rotating assembly includes a mounting sleeve 103 rotatably mounted on the fixed bracket 101 and a drive gear 104. The drive gear 104 is driven to rotate by a rotary motor fixed on the fixed bracket 101, and the drive gear 104 is meshed with the inner wall of the mounting sleeve 103. As can be seen from the structure shown in the figure, in order to achieve stable assembly of the fixed bracket 101 and the mounting sleeve 103, an inner groove is formed inside the fixed bracket 101, and an outer protrusion is formed on the top of the mounting sleeve 103, and the outer protrusion is embedded in the inner groove. In addition, the overall mounting sleeve 103 has an open top structure.

[0046] Continue to refer to Figure 4 and Figure 6As shown, a first movable component is provided to cooperate with the rotating component, and the first movable component includes a first electric push rod 105 fixed on the fixed bracket 101 and a slide plate 106 axially slidably installed in the mounting sleeve 103. A connecting ring 107 is rotatably installed on one side of the slide plate 106, and the telescopic end of the first electric push rod 105 is fixedly connected to the connecting ring 107.

[0047] Continue to refer to Figures 3-8 As shown, a second moving component is provided to cooperate with the rotating component and the first moving component. The second moving component includes a lead screw 109 that is radially rotatably installed in the mounting sleeve 103. A slide block 110 is helically sleeved on the lead screw 109. A slide frame 108 is axially slidably connected to the outside of the slide block 110. One end of the slide frame 108 is radially slidably connected to the slide plate 106, and the other end of the slide frame 108 is fixedly connected to a grinding head 102. In addition, the second moving component also includes a second electric push rod 111 fixed on the fixed bracket 101. The telescopic end of the second electric push rod 111 is fixedly connected to a toothed sleeve 112, and the toothed sleeve 112 is coaxially sleeved on the outside of the mounting sleeve 103. The second moving component also includes a small bevel gear 113 and a large bevel gear 114 rotatably mounted on the outside of the mounting sleeve 103. The small bevel gear 113 is used to drive the lead screw 109 to rotate, and the large bevel gear 114 is used to mesh with the toothed sleeve 112 and the small bevel gear 113, and to enable the large bevel gear 114 to rotate around the central axis of the toothed sleeve 112.

[0048] In the figures of this invention, two slides 108 and slide blocks 110 are preferably symmetrically arranged, and the lead screw 109 has two threaded portions with opposite thread directions, and the two slide blocks 110 are respectively screwed onto the two threaded portions.

[0049] In summary, when performing the polishing process:

[0050] Rotary grinding – The drive gear 104 is driven by a rotary motor to rotate, and the drive gear 104 drives the overall mounting sleeve 103 and the structures installed inside and outside it to rotate synchronously. During this process, the grinding head 102 revolves around the central axis of the mounting sleeve 103, thereby realizing the rotary grinding of the grinding head 102.

[0051] Axial movement (axial grinding feed adjustment) - Start the first electric push rod 105 to drive the slide plate 106 to move axially inside the mounting sleeve 103. The corresponding slide plate 106 drives the carriage 108 and the grinding head 102 to move axially, thereby realizing the axial feed of the grinding head 102.

[0052] Radial movement (radial grinding feed adjustment) - The second electric push rod 111 is activated. The second electric push rod 111 pushes the gear sleeve 112 to move axially outside the mounting sleeve 103. This drives the small bevel gear 113 to rotate through the meshing action between the large bevel gear 114 and the small bevel gear 113. The rotation of the small bevel gear 113 can drive the lead screw 109 to rotate, which in turn drives the slide 110 on the lead screw 109 to move radially. The slide 110 cooperates with the slide 108, driving the slide 108 and the grinding head 102 to move radially, thereby realizing the radial feed of the grinding head 102.

[0053] The above-mentioned large bevel gear 114 is... Figure 4 Install in the direction shown (the central axis of the large bevel gear 114 is perpendicular to the central axis of the lead screw 109 and the central axis of the mounting sleeve 103), that is, under the premise of ensuring effective meshing, the large bevel gear 114 can rotate arbitrarily around the central axis of the gear sleeve 112, thereby avoiding mutual interference between the rotation of the grinding head 102 and its radial feed.

[0054] As mentioned above, axial and radial movements can be executed simultaneously or independently, depending on the specific requirements. Figure 1 The encapsulation step shown has a flat surface, so axial and radial movements are performed independently.

[0055] As described above, the rotary motor, the first electric push rod 105, and the second electric push rod 111 are all fixedly mounted on the fixed bracket 101, thereby effectively simplifying the circuit structure in the overall processing device. Only the power supply line needs to be connected to the fixed bracket 101, which greatly reduces the difficulty of circuit layout, installation, and maintenance.

[0056] In this invention, the positioning position of the toothed sleeve 112 of the grinding mechanism 100 is further optimized: as follows Figure 4 and Figure 9 As shown, two transmission wheels 115 are provided on the outside of the mounting sleeve 103. The two transmission wheels 115 are coaxially fixed with the small bevel gear 113 and the lead screw 109, respectively, and belts 116 are driven to the two transmission wheels 115. Based on this, the gear sleeve 112, the large bevel gear 114, and the small bevel gear 113 can all be positioned in the upper middle part of the mounting sleeve 103. Under this optimized setting, it can be effectively ensured that the gear sleeve 112 always moves axially between the two ends of the mounting sleeve 103, thereby avoiding the possibility that the axial feed of the grinding head 102 might be affected if the end of the gear sleeve 112 moves to protrude outward from the end of the mounting sleeve 103, thus improving the accuracy of the grinding feed.

[0057] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sensor processing apparatus, comprising a grinding mechanism (100) and a clamping mechanism (200) that cooperate with each other, characterized in that: The grinding mechanism (100) includes a fixed bracket (101) and a grinding head (102) connected to the fixed bracket (101) via a drive assembly, and the drive assembly includes a rotating assembly, a first moving assembly, and a second moving assembly; The clamping mechanism (200) includes a fixed ring (201) and N clamping plates (202) that can move radially along the fixed ring (201), and each clamping plate (202) is connected to the fixed ring (201) by a limit assembly; The rotating assembly includes a mounting sleeve (103) rotatably mounted on a fixed bracket (101) and a drive gear (104). The drive gear (104) is driven to rotate by a rotary motor fixed on the fixed bracket (101), and the drive gear (104) meshes with the inner wall of the mounting sleeve (103). The first moving component includes a first electric push rod (105) fixed on a fixed bracket (101) and a slide plate (106) axially slidably installed in the mounting sleeve (103). A connecting ring (107) is rotatably installed on one side of the slide plate (106), and the telescopic end of the first electric push rod (105) is fixedly connected to the connecting ring (107). The second moving component includes a carriage (108) that is radially slidably connected to the slide plate (106), and the grinding head (102) is fixed to the free end of the carriage (108); The second moving component also includes a lead screw (109) that is rotatably mounted in the mounting sleeve (103) in a radial direction, and a slide (110) is helically sleeved on the lead screw (109), and the slide (110) is axially slidably connected to the slide (108); The slide (108) and slide block (110) are symmetrically provided in twos. The lead screw (109) has two threaded parts with opposite thread directions, and the two slide blocks (110) are respectively screwed onto the two threaded parts. The second moving component also includes a second electric push rod (111) fixed on the fixed bracket (101), the telescopic end of the second electric push rod (111) is fixedly connected to a toothed sleeve (112), and the toothed sleeve (112) is coaxially sleeved outside the mounting sleeve (103); The second moving component also includes a small bevel gear (113) and a large bevel gear (114) rotatably mounted on the outside of the mounting sleeve (103), wherein the small bevel gear (113) is used to drive the lead screw (109) to rotate, and the large bevel gear (114) is used to mesh with the connecting sleeve (112) and the small bevel gear (113), and enables the large bevel gear (114) to rotate around the central axis of the sleeve (112).

2. The sensor processing apparatus according to claim 1, characterized in that: Two drive wheels (115) are provided on the outside of the mounting sleeve (103). The two drive wheels (115) are coaxially fixed with the small bevel gear (113) and the lead screw (109) respectively, and belts (116) are connected to the two drive wheels (115).

3. The sensor processing apparatus according to claim 1, characterized in that: The limiting component includes N threaded sleeves (203) that rotate through the fixed ring (201), each threaded sleeve (203) having a threaded rod (204) screwed through it, and N clamping plates (202) being fixed one-to-one on the N threaded rods (204).

4. The sensor processing apparatus according to claim 3, characterized in that: The limiting assembly also includes a limiting toothed ring (205) coaxially rotatably mounted on the fixed ring (201). A spiral spring is connected between the limiting toothed ring (205) and the fixed ring (201), and N threaded sleeves (203) are all engaged on one side of the limiting toothed ring (205).

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