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CN-116967092-B - Glue filling device and glue filling method between scintillator and photodiode of CT detector module

CN116967092BCN 116967092 BCN116967092 BCN 116967092BCN-116967092-B

Abstract

The embodiment of the application discloses a glue pouring device and a glue pouring method between a scintillator of a CT detector module and a photodiode, wherein the glue pouring device comprises a bottom plate, and a glue pouring block and a supporting block which are arranged on the bottom plate, wherein a glue pouring pool and a glue pouring groove are arranged on one side of the glue pouring block, which is far away from the bottom plate, one end of the glue pouring groove is communicated with the glue pouring pool, the other end of the glue pouring groove extends towards the direction, which is far away from the glue pouring pool, two supporting blocks are arranged on one side, which is far away from the bottom plate, of the supporting block, a convex block is higher than one side surface, which is far away from the bottom plate, of the glue pouring block, supporting grooves are formed in the convex block, the supporting grooves of the two supporting blocks are oppositely arranged, the supporting grooves are used for accommodating the detector module, when the detector module is placed in the supporting grooves, the scintillator of the detector module faces the direction of the glue pouring pool, a gap between the scintillator and the photodiode is located above the glue pouring groove, one part of the glue pouring groove is located under the gap, and edges of the scintillator and the two sides of the photodiode are contacted with the surfaces on the two sides of the glue pouring groove.

Inventors

  • WEI CHAOWEI
  • QI LIMIN
  • SU SHU
  • Hou Yongteng

Assignees

  • 赛诺威盛医疗科技(扬州)有限公司

Dates

Publication Date
20260508
Application Date
20230713

Claims (8)

  1. 1. A glue filling device between a scintillator (41) and a photodiode (42) of a CT detector module (40) is characterized by comprising a bottom plate (10), and a glue filling block (20) and a supporting block (30) which are arranged on the bottom plate (10), One side of the glue pouring block (20) far away from the bottom plate (10) is provided with a glue pool (21) and a glue pouring groove (22), one end of the glue pouring groove (22) is communicated with the glue pool (21), the other end of the glue pouring groove (22) extends towards the direction far away from the glue pool (21), one end of the glue pouring block (20) far away from the glue pool (21) is provided with a positioning hole (23), the corresponding position on the bottom plate (10) is provided with a positioning pin (11), and the glue pouring block (20) is fixedly arranged on the bottom plate (10) in a matching way by virtue of the coupling between the positioning hole (23) and the positioning pin (11); the two support blocks (30) are arranged, a projection higher than the surface of one side, far away from the bottom plate (10), of the glue filling block (20) is arranged on one side, far away from the bottom plate (10), of the support block (30), a support groove is formed in the projection, the support grooves of the two support blocks (30) are oppositely arranged, and are used for accommodating the detector modules (40), and the support grooves of the two support blocks (30) are asymmetrically designed, so that the detector modules (40) cannot be reversely placed; When the detector module (40) is placed in the supporting groove, the scintillator (41) of the detector module (40) faces the glue pool (21), a gap between the scintillator (41) and the photodiode (42) is located above the glue pouring groove (22), a part of the glue pouring groove (22) is located right below the gap, and edges of the scintillator (41) and the photodiode (42) on two sides of the gap are in contact with surfaces of the glue pouring blocks (20) on two sides of the glue pouring groove (22) right below; The glue filling device utilizes vacuum equipment to rapidly extract gas in the gap, and glue can rapidly fill the gap between the PD and the scintillator (41) under the action of capillary phenomenon.
  2. 2. The CT detector module (40) scintillator (41) and photodiode (42) inter-glue injection apparatus as recited in claim 1, The base plate (10) is made of 304 stainless steel, the glue filling block (20) is made of Teflon, and the supporting block (30) is made of acetal resin.
  3. 3. The CT detector module (40) scintillator (41) and photodiode (42) inter-glue injection apparatus as recited in claim 1, The edges and corners of the inner edges of the glue pool (21) and the glue filling groove (22) are arc surfaces.
  4. 4. The device for injecting glue between a scintillator (41) and a photodiode (42) of a CT detector module (40) as claimed in claim 3, The number of the positioning pins (11) is at least two, and the number of the positioning holes (23) is at least two correspondingly, and the number of the positioning pins is at least two, so that the glue filling block (20) is prevented from being reversely placed.
  5. 5. The CT detector module (40) scintillator (41) and photodiode (42) inter-glue injection apparatus as recited in claim 1, The glue filling block (20) is positioned between the two support blocks (30), and the glue filling block (20) is separated from the support blocks (30).
  6. 6. The CT detector module (40) scintillator (41) and photodiode (42) inter-glue injection apparatus as recited in claim 1, The support block (30) is provided with a first fixing hole (31) penetrating through the support block (30), a second fixing hole (12) is formed in a corresponding position of the bottom plate (10), and the support block (30) is fixedly arranged on the bottom plate (10) by penetrating through the first fixing hole (31) and extending into the second fixing hole (12) through a fixing piece.
  7. 7. The device for injecting glue between a scintillator (41) and a photodiode (42) of a CT detector module (40) as set forth in claim 6, One end of the supporting block (30) close to the bottom plate (10) is provided with a positioning hole (23), and a positioning pin (11) is arranged at a corresponding position on the bottom plate (10); the supporting block (30) is matched and fixedly arranged on the bottom plate (10) by means of the coupling between the positioning holes (23) and the positioning pins (11).
  8. 8. A method of potting between a scintillator (41) and a photodiode (42) of a CT detector module (40) using the potting device between a scintillator (41) and a photodiode (42) of a CT detector module (40) as claimed in any one of claims 1 to 7, comprising: Placing the glue filling block (20) on the bottom plate (10) according to the position of the positioning hole (23); Placing the detector module (40) into a supporting groove of the supporting block (30) according to the direction of the scintillator (41) towards the glue pool (21); dripping glue into the glue pool (21) until the liquid level contacts with the detector module (40); Opening a cavity of the vacuum equipment, placing the glue filling device into the vacuum equipment, and vacuumizing; and after the preset time, breaking vacuum of the vacuum equipment, and taking out the glue filling device and the detector module (40) from the cavity of the vacuum equipment.

Description

Glue filling device and glue filling method between scintillator and photodiode of CT detector module Technical Field The application relates to the technical field of glue filling, in particular to a glue filling device and a glue filling method between a scintillator of a CT detector module and a photodiode. Background In modern mainstream CT systems, the detector module serves as a device for CT acquisition of image data, and its role in the overall system is of paramount importance. The bulb tube emits X-rays, the X-rays fully cover a certain part of a human body to be scanned, the detector module collects the X-rays, converts the X-rays into electric signals, converts the electric signals into digital information through the data collection and conversion unit and stores the digital information in the image processing system, and the image processing system generates images through a series of correction algorithms and image reconstruction algorithms and displays the images on the display. In the detector module, a scintillator (a functional crystal material capable of converting X-rays into visible light) receives the X-rays and emits visible light, and a PD (Photo-Diode, i.e., a photodiode, which is a semiconductor device capable of converting visible light into photocurrent) converts the visible light into photocurrent through photoelectric conversion, and obtains an electrical signal through an external circuit and a load, and the electrical signal is transmitted from a readout circuit. In the production process of the detector module, parallelism of the scintillator and the PD needs to be guaranteed to be +/-10 mu m, UV glue mixed with plastic beads is used for pre-curing during machine pasting, and optical unref ill glue needs to be refilled after pasting is finished, so that no gaps or bubbles in the interior are guaranteed. Therefore, a solution for encapsulating between the scintillator and the photodiode of the CT detector module is needed to solve the problem that the internal gap is not filled with the glue after the scintillator and the photodiode are attached. Disclosure of Invention The embodiment of the application aims to provide a glue filling device and a glue filling device between a scintillator and a photodiode of a CT detector module, which are used for solving the problem that an internal gap is not filled with glue after the scintillator and the photodiode are attached in the prior art. In order to achieve the above object, the embodiment of the application provides a glue filling device between a scintillator and a photodiode of a CT detector module, which comprises a bottom plate, and a glue filling block and a supporting block which are arranged on the bottom plate, wherein, A glue pool and a glue pouring groove are formed in one side, far away from the bottom plate, of the glue pouring block, one end of the glue pouring groove is communicated with the glue pool, and the other end of the glue pouring groove extends in a direction far away from the glue pool; The two support blocks are arranged, a projection higher than the surface of one side, far away from the bottom plate, of the glue filling block is arranged on one side, far away from the bottom plate, of the support block, a support groove is formed in the projection, the support grooves of the two support blocks are oppositely arranged, and the support groove is used for accommodating the detector module; When the detector module is placed in the supporting groove, the scintillator of the detector module faces the glue pool direction, a gap between the scintillator and the photodiode is located above the glue pouring groove, a part of the glue pouring groove is located right below the gap, and edges of the scintillator and the photodiode on two sides of the gap are in contact with surfaces of the glue pouring blocks on two sides of the glue pouring groove right below. Optionally, the material of bottom plate is 304 stainless steel, the material of encapsulating piece is the teflon, the material of supporting shoe is acetal resin. Optionally, the support grooves of the two support blocks are asymmetrically designed, so that the detector modules cannot be placed reversely. Optionally, the edges and corners of the inner edges of the glue pool and the glue filling groove are arc surfaces. Optionally, a positioning hole is formed in one end, far away from the glue pool, of the glue filling block, and a positioning pin is arranged at a corresponding position on the bottom plate; And the glue filling block is matched and fixedly arranged on the bottom plate by means of coupling between the positioning holes and the positioning pins. Optionally, the number of the positioning pins is at least two, and at least two specifications are provided, and correspondingly, the number of the positioning holes is also at least two, and at least two specifications are provided, so that the glue filling block is prevented from being reversel