Auxiliary tool for assembling CT (Computed Tomography) detector module

Abstract

The utility model relates to an auxiliary tool for assembling a CT detector module, which is characterized in that a tool longitudinal limiting plate and a tool transverse limiting plate are arranged in the middle of a tool bottom plate, tool positioning tables are arranged at two ends of the tool bottom plate, a scintillator is arranged in the middle of a scintillator PCB (printed circuit board), and the longitudinal side surface of the scintillator is propped against the tool longitudinal limiting plate for limiting; the transverse side face of the scintillator abuts against the tool transverse limiting plate for limiting, the clamping mechanism comprises a fixed clamping block, a movable clamping block and a clamping block driving assembly, the fixed clamping block is fixedly arranged on one side of the tool bottom plate, and the movable clamping block is arranged on the other side of the tool bottom plate and driven by the clamping block driving assembly to move. The auxiliary positioning device is used for auxiliary positioning of the scintillator PCB in the CT detector module, accurate positioning of the scintillator PCB can be guaranteed, and assembling procedures can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment assembly, in particular to an auxiliary tooling for assembling a CT detector module. Background Art

[0002] The core components of the CT detector include ASG, scintillator, aluminum profile bracket and other components. Among them, ASG (full name of English is Anti-Scatter grid, Chinese name is anti-scatter filter) is equipped with an anti-scatter grid, which is used to absorb scattered X-rays to prevent them from interfering with the image and ensure that the detector sensor will not be interfered by X-rays. The scintillator is a component for data acquisition and photoelectric signal conversion, which is usually embodied in the form of a PCB board. The ASG and the scintillator are installed on the aluminum profile bracket for protection. At the same time, they can withstand the impact of external forces such as CT centrifugal force, and can transfer heat to achieve heat dissipation. In the prior art, the module structure composed of ASG, scintillator PCB board, and aluminum profile bracket has high requirements for installation and positioning accuracy and will affect the image quality. Therefore, some installation methods of ASG modules have appeared in the prior art.

[0003] For example, the patent with application number 202311416819.1 discloses a device and method for adjusting the parallelism between a CT detector module bracket and an ASG, which includes a base and a positioning and leveling seat, and a plurality of groups of spring bodies are arranged on the top of the positioning and leveling seat. When installing the device, the top surface of the jacking platform is first adjusted to be in a horizontal state, and then the bottom surface of the detector module bracket is attached to the top surface of the jacking platform in a horizontal state, and then the positioning and leveling seat is adjusted to be in a horizontal state, and the bottom surface of the ASG anti-scatter filter grid is correspondingly placed on the adjustment block, and then pressure is applied to the top surface of the ASG anti-scatter filter grid until the top surface of the ASG anti-scatter filter grid reaches a horizontal state, and This process requires the cooperation of the clamping device, specifically: the horizontal limit surface of the clamping device touches and drives the ASG anti-scatter filter grid to further touch the top surface of the adjustment block, and the adjustment block adaptively supports the ASG anti-scatter filter grid based on the rebound energy formed by the spring body it receives. The ASG anti-scatter filter grid is supported by the bottom rebound and slides and rises until the applied pressure reaches the preset value of the force control. The top surface of the ASG anti-scatter filter grid is flush with the horizontal limit surface of the clamping device. At this time, the top surface of the ASG anti-scatter filter grid reaches a horizontal state. Finally, the ASG anti-scatter filter grid is kept in a horizontal state and shifted to the top surface of the detector module bracket for fixing. However, the assembly process of the device requires multiple switching of the horizontal positioning reference, which can easily lead to assembly errors. At the same time, the operation is relatively cumbersome and the assembly efficiency is relatively low. Utility Model Content

[0004] The utility model aims to provide a CT detector module assembly auxiliary tool, which is used for assisting in positioning a scintillator PCB board in a CT detector module, can ensure accurate positioning of the scintillator PCB board and can save assembly steps.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A CT detector module assembly auxiliary tooling comprises a tooling base plate and a clamping mechanism, wherein a tooling longitudinal limit plate and a tooling transverse limit plate are provided in the middle of the tooling base plate, tooling positioning tables are provided at both ends of the tooling base plate, a scintillator is provided in the middle of a scintillator PCB board, and the longitudinal side of the scintillator is in contact with the tooling longitudinal limit plate, and the transverse side of the scintillator is in contact with the tooling transverse limit plate, the clamping mechanism comprises a fixed clamping block, a movable clamping block and a clamping block driving assembly, and the fixed clamping block is fixedly arranged on one side of the tooling base plate, and the movable clamping block is arranged on the other side of the tooling base plate and is driven to move by the clamping block driving assembly.

[0007] The clamp block driving assembly includes a push rod and a push rod support block, wherein the push rod support block is fixedly mounted on the tooling base plate, the push rod is threadedly inserted into the push rod support block, the front end of the push rod is fixedly connected to a connecting block, the lower end of the connecting block is fixedly connected to a clamp block connecting plate, and both ends of the clamp block connecting plate are respectively fixedly connected to the movable clamp blocks on the corresponding sides.

[0008] The front end of the push rod passes through the connecting block, and a spacer is provided between the push rod and the connecting block. A positioning plate is provided on the side of the connecting block away from the push rod supporting block, and a countersunk screw passes through the positioning plate and is threadedly connected to the front end of the push rod.

[0009] The fixed clamp block and the movable clamp block are both provided with a clamp block support portion, and a support stop is formed on the upper side of the clamp block support portion.

[0010] The tooling base plate is arranged on a positioning platform, on which a PCB limit block and a PCB positioning column are arranged, and the lower side of the scintillator PCB board is supported by each PCB positioning column, and either side of the scintillator PCB board is limited by the PCB limit block.

[0011] The positioning platform is provided with a tool positioning pin, and the tool bottom plate is provided with a tool positioning hole for the tool positioning pin to pass through.

[0012] A cushion block having the same exposed height as that of the tooling positioning platform is provided on the lower side of the tooling bottom plate.

[0013] The tooling bottom plate is provided with a bottom plate recess at a position corresponding to the PCB mounting hole of the scintillator PCB board.

[0014] The tooling positioning platform is provided with an installation positioning pin.

[0015] The advantages and positive effects of the utility model are:

[0016] 1. The utility model is used to assist in positioning the scintillator PCB board in the CT detector module, and during positioning, the longitudinal side of the scintillator on the lower side of the scintillator PCB board contacts the tooling longitudinal limit plate on the tooling bottom plate, and the transverse side contacts the tooling transverse limit plate on the tooling bottom plate to ensure positioning. Then, after the scintillator PCB board is clamped and fixed by the clamping mechanism, the utility model is placed together with the scintillator PCB board on the bracket of the CT detector module to complete the positioning and assembly of the scintillator PCB board, thereby ensuring that the scintillator PCB board is accurately assembled and positioned.

[0017] 2. The overall structure of the utility model is simple, compact and easy to operate. When the longitudinal side of the scintillator on the lower side of the scintillator PCB board contacts the longitudinal limit plate of the tooling and the transverse side contacts the transverse limit plate of the tooling, the operator only needs to screw the push rod in the clamping mechanism to complete the clamping and positioning of the scintillator PCB board. When the utility model is transferred to the bracket together with the scintillator PCB board, it is only necessary to ensure that the tooling positioning tables at both ends of the tooling base plate are respectively matched with the support seats on both sides of the bracket to complete the positioning. In addition, the utility model can also place the tooling base plate on a positioning platform according to actual needs so that the clamping mechanism can be opened to the maximum position, so that the scintillator PCB board has a larger adjustment space to facilitate the adjustment operation, which further improves the flexibility of the tooling of the utility model.

[0018] 3. The utility model saves assembly operation procedures. Since the scintillator PCB board is accurately positioned, and the longitudinal and lateral sides of the scintillator on the lower side of the scintillator PCB board are the assembly references of the subsequent ASG module, the ASG module can be directly placed on the scintillator PCB board and the position can be adjusted to complete the positioning during assembly. No additional auxiliary tooling is required. At the same time, the assembly reference is the scintillator on the lower side of the scintillator PCB board, which does not change. Therefore, the assembly accuracy can be guaranteed and assembly errors caused by constant changes in the assembly reference can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 for Figure 1 A top view of the utility model,

[0021] Figure 3 for Figure 2 In the CC view,

[0022] Figure 4 for Figure 3 The enlarged view of H in the figure,

[0023] Figure 5 for Figure 3 The enlarged view of K in the figure,

[0024] Figure 6 for Figure 2 DD view in,

[0025] Figure 7 This is a top view of the utility model placed on a bracket together with a scintillator PCB board.

[0026] Figure 8 for Figure 7 A top view of the scintillator PCB and the bracket being fixed by the locking element.

[0027] Fig. 9 for Figure 8 EE view in the

[0028] Fig.10 This is a schematic diagram of the structure of the CT detector module targeted by the utility model.

[0029] Fig.11 for Fig.10 Schematic diagram of the support structure in

[0030] Fig.12 for Fig.10 The main view of the matching status of the ASG module and the scintillator PCB board.

[0031] Fig.13 for Fig.12 Medium FF view.

[0032] Among them, 1 is a bracket, 101 is a support seat, 102 is a positioning pin hole, 2 is a scintillator PCB board, 201 is a lateral side, 202 is a longitudinal side, 203 is a PCB mounting hole, 3 is an ASG module, 301 is an anti-scattering grid, 3011 is a grid limit plate, 302 is a positioning connecting plate, 3021 is a connecting plate limit plate, 4 is a locking element, 401 is an isolation protrusion, 402 is a locking nut, 501 is a positioning platform, 502 is a PCB limit block, 503 is a tooling bottom plate, 5031 is a tooling longitudinal limit plate, 5032 is a tooling Install the transverse limit plate, 5033 is the bottom plate recess, 504 is the fixed clamp block, 505 is the tooling positioning hole, 506 is the PCB positioning column, 507 is the tooling positioning platform, 508 is the installation positioning pin, 509 is the clamp block drive assembly, 5091 is the positioning plate, 5092 is the spacer, 5093 is the countersunk screw, 5094 is the push rod, 5095 is the push rod support block, 510 is the clamp block connecting plate, 511 is the connecting block, 512 is the movable clamp block, 513 is the cushion block, 514 is the clamp block support part, 5141 is the vertical surface of the stop, and 5142 is the horizontal surface of the stop. DETAILED DESCRIPTION

[0033] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0034] like Figures 1 to 9 As shown, the utility model includes a tooling base plate 503 and a clamping mechanism, wherein the tooling base plate 503 is provided with a tooling longitudinal limit plate 5031 and a tooling transverse limit plate 5032 in the middle, and tooling positioning platforms 507 are provided at both ends of the tooling base plate 503. The clamping mechanism includes a fixed clamping block 504, a movable clamping block 512 and a clamping block driving assembly 509, and the fixed clamping block 504 is fixedly arranged on one side of the tooling base plate 503, and the movable clamping block 512 is arranged on the other side of the tooling base plate 503 and is driven to move by the clamping block driving assembly 509. Figures 10 to 13 As shown, the CT detector module targeted by the present invention includes a scintillator PCB board 2, and a scintillator in a square shape is arranged in the middle of the scintillator PCB board 2, such as Figure 5As shown, the fixed clamp block 504 and the movable clamp block 512 are both provided with a clamp block support portion 514, and a support stopper is formed on the upper side of the clamp block support portion 514 for supporting the scintillator PCB board 2, wherein the outer surfaces of the two side edges of the scintillator PCB board 2 are respectively in contact with the stopper vertical surfaces 5141 of the corresponding side support stopper, and the lower surfaces of the two side edges of the scintillator PCB board 2 are respectively in contact with the stopper horizontal surfaces 5142 of the corresponding side support stopper. When the utility model is used, the operator adjusts the position of the scintillator PCB board 2 so that the longitudinal side surface 202 of the scintillator contacts and limits the longitudinal limit plate 5031 of the tooling, and the transverse side surface 201 of the scintillator contacts and limits the transverse limit plate 5032 of the tooling to achieve accurate positioning, and then the scintillator PCB board 2 is clamped and fixed by the clamping mechanism.

[0035] like Figures 1 to 4 As shown, the clamp block driving assembly 509 includes a push rod 5094 and a push rod support block 5095, wherein the push rod support block 5095 is fixedly arranged on the tooling base plate 503, the push rod 5094 is threadedly inserted on the push rod support block 5095, and the push rod 5094 can be driven to move by screwing, the front end of the push rod 5094 is fixedly connected to a connecting block 511 by a countersunk screw 5093, the lower end of the connecting block 511 is fixedly connected to a clamp block connecting plate 510, the two ends of the clamp block connecting plate 510 are respectively fixedly connected to the movable clamp blocks 512 on the corresponding sides, and the clamp block connecting plate 510 is slidably connected to the tooling base plate 503. When the utility model is used, the operator screws the push rod 5094 to drive the clamp block connecting plate 510 to move, thereby driving the movable clamp block 512 to move and cooperate with the fixed clamp block 504 to clamp and fix the scintillator PCB board. In addition, this embodiment adopts a manually driven structure to move the movable clamp 512 only from the perspective of convenient on-site operation. The utility model can also adopt an automatic drive method according to actual needs. In this case, the push rod 5094 can be driven and moved by a linear drive device such as an electric push rod and a cylinder to complete the clamping.

[0036] like Figure 4 As shown, the front end of the push rod 5094 passes through the connecting block 511, and a spacer sleeve 5092 is provided between the push rod 5094 and the connecting block 511, a positioning plate 5091 is provided on the side of the connecting block 511 away from the push rod support block 5095, and the countersunk screw 5093 passes through the positioning plate 5091 and is threadedly connected to the front end of the push rod 5094, the positioning plate 5091 and the spacer sleeve 5092 can play a clamping and fastening role to ensure that the front end of the push rod 5094 is firmly connected to the connecting block 511.

[0037] like Figure 5As shown, in one embodiment of the utility model, the scintillator PCB board 2 can be directly placed on the clamp support part 514 of the fixed clamp 504 and the movable clamp 512 when positioning, and the position can be adjusted so that the longitudinal side 202 of the scintillator on the lower side of the scintillator PCB board 2 contacts the longitudinal limit plate 5031 of the tooling, and the transverse side 201 contacts the transverse limit plate 5032 of the tooling to complete the positioning, and the width of the stop horizontal surface 5142 on the upper surface of the clamp support part 514 can be designed according to actual needs.

[0038] And as Figure 1 As shown, in order to further increase the adjustment space of the scintillator PCB board 2, in another embodiment of the utility model, when the scintillator PCB board 2 is positioned, the tooling base plate 503 can be set on a positioning platform 501, and the positioning platform 501 is provided with a PCB limit block 502 and a PCB positioning column 506, and the lower side of the scintillator PCB board 2 is supported by each PCB positioning column 506, and any side of the scintillator PCB board 2 is limited by the PCB limit block 502. When this embodiment is working, the movable clamp 512 can retreat to the maximum position, so that the scintillator PCB board 2 can have a larger adjustment space. In addition, as shown in FIG. Figure 1 and Figures 6-7 As shown, in order to ensure that the tooling base plate 503 and the positioning platform 501 are accurately positioned, in this embodiment, the positioning platform 501 is provided with a tooling positioning pin, and the tooling base plate 503 is provided with a tooling positioning hole 505 for the tooling positioning pin to pass through to achieve accurate positioning with the positioning platform 501. Figure 6 As shown, since the tooling positioning platforms 507 at both ends of the tooling base plate 503 protrude from the tooling base plate 503, Figure 7 As shown, a cushion block 513 having the same exposed height as the tooling positioning platform 507 is provided at a suitable position on the lower side of the tooling base plate 503 to ensure that the tooling base plate 503 can be placed horizontally on the positioning platform 501 .

[0039] like Fig. 9 As shown in FIG. 1 , when the auxiliary tooling 5 is placed together with the scintillator PCB board 2 on the bracket 1 of the CT detector module, the scintillator PCB board 2 can be locked in position by the locking element 4 first, and then the scintillator PCB board 2 can be locked in position by the locking element 4. Figure 7 As shown, the tooling bottom plate 503 is provided with bottom plate recesses 5033 at positions corresponding to the respective PCB mounting holes 203 of the scintillator PCB board 2 to facilitate installation.

[0040] The working principle of the utility model is:

[0041] like Figures 10 to 13As shown, the CT detector module targeted by the present invention comprises a bracket 1, a scintillator PCB board 2 and an ASG module 3, wherein support seats 101 are provided on both sides of the bracket 1, and positioning pin holes 102 are provided on the support seats 101, the ASG module 3 comprises an anti-scattering grid 301 in the middle and positioning connecting plates 302 on both sides, and a grid limiting plate 3011 is provided on the lower side of either lateral end of the anti-scattering grid 301, and a connecting plate limiting plate 3021 is provided on the lower side of one end where the positioning connecting plate 302 on either side is connected to the anti-scattering grid 301. The present invention is mainly used to assist in positioning the position of the scintillator PCB board 2, and the scintillator on the scintillator PCB board 2 (including the longitudinal side 202 and the lateral side 201) is also a positioning reference for the subsequent assembly of the ASG module 3, such as Figures 12-13 As shown, when the ASG module 3 is assembled, the connection plate limit plate 3021 contacts and limits the corresponding longitudinal side 202 of the scintillator, and the grille limit plate 3011 contacts and limits the corresponding lateral side 201 of the scintillator. The scintillator PCB board 2 and the ASG module 3 are fixed to the bracket 1 by a plurality of locking elements 4, and the locking element 1 is provided with an isolation protrusion 401 to separate the scintillator PCB board 2 and the ASG module 3. The locking element 4 can select a positioning pin, a positioning bolt or other structures according to actual needs. The isolation protrusion 401 can also select a fixed structure according to actual needs, such as an isolation block, an isolation flange or other structures integrally formed with the locking element 4, or a movable structure, such as an isolation nut, an isolation pad or other structures threadedly mounted on the locking element 4. When fixing the ASG module 3, as shown in FIG. Fig.10 As shown, a locking nut 402 can be installed on the upper end of the locking element 4 to achieve the fixed connection of various components.

[0042] The utility model is used for assisting in positioning the scintillator PCB board 2, and when in use, it can be directly placed on the bracket 1 together with the scintillator PCB board 2 to ensure that the scintillator PCB board 2 is accurately positioned. Then, when assembling the ASG module 3, no additional auxiliary tooling is required. The ASG module 3 can be directly placed on the scintillator PCB board 2 and the position can be adjusted so that the connecting plate limit plate 3021 contacts and limits the corresponding side longitudinal side 202 of the scintillator, and the grille limit plate 3011 contacts and limits the corresponding side lateral side 201 of the scintillator to complete the positioning.

[0043] The utility model comprises the following steps when used:

[0044] Step 1: If Figure 1 As shown, the scintillator PCB board 2 is placed on the utility model and the position of the scintillator PCB board 2 is adjusted to Figures 5-6As shown, the longitudinal side surface 202 of the scintillator at the lower side of the scintillator PCB board 2 is contacted with the tooling longitudinal limit plate 5031 on the tooling base plate 503, and the transverse side surface 201 is contacted with the tooling transverse limit plate 5032 on the tooling base plate 503, and then the scintillator PCB board 2 is clamped and fixed by the clamping mechanism.

[0045] In addition, the tooling longitudinal limit plate 5031 and the tooling transverse limit plate 5032 also define the reference for the subsequent assembly of the ASG module 3. That is, after the scintillator on the lower side of the scintillator PCB board 2 is accurately positioned, the subsequent assembly of the ASG module 3 only requires placing the ASG module 3 directly on the scintillator PCB board 2 and adjusting the position to complete the positioning without the need for other auxiliary tooling.

[0046] Step 2: If Fig. 9 As shown, the utility model is placed together with the scintillator PCB board 2 on the bracket 1, and the tooling positioning platforms 507 at both ends of the tooling base plate 503 are respectively positioned with the support seat 101 on the corresponding side of the bracket 1. In this embodiment, the support seat 101 is provided with a positioning pin hole 102, and the tooling positioning platform 507 is provided with an installation positioning pin 508 which is respectively inserted into the positioning pin hole 102 on the corresponding side.

[0047] Step 3: If Fig. 9 As shown, the scintillator PCB board 2 is fixed on the support table on the upper side of the support 1.

[0048] Step 4: After the scintillator PCB board 2 is fixed, the clamping mechanism releases the scintillator PCB board 2, and then the utility model is removed.

[0049] Step 5: Place the ASG module 3 on the scintillator PCB board 2, and adjust the position of the ASG module 3 so that the grille limit plate 3011 on the lower side of the ASG module 3 contacts the corresponding lateral side 201 of the scintillator, and the connecting plate limit plate 3021 contacts the corresponding longitudinal side 202 of the scintillator. After the position of the ASG module 3 is adjusted, it is fixed on the scintillator PCB board 2.

Claims

1. A CT detector module assembly auxiliary tool, characterized in that: The utility model comprises a tooling base plate (503) and a clamping mechanism, wherein a tooling longitudinal limit plate (5031) and a tooling transverse limit plate (5032) are provided in the middle of the tooling base plate (503), tooling positioning platforms (507) are provided at both ends of the tooling base plate (503), a scintillator is provided in the middle of a scintillator PCB board (2), and the longitudinal side surface (202) of the scintillator is in contact with the tooling longitudinal limit plate (5031), and the transverse side surface (201) of the scintillator is in contact with the tooling transverse limit plate (5032), and the clamping mechanism comprises a fixed clamping block (504), a movable clamping block (512) and a clamping block driving assembly (509), wherein the fixed clamping block (504) is fixedly arranged on one side of the tooling base plate (503), and the movable clamping block (512) is arranged on the other side of the tooling base plate (503) and is driven to move by the clamping block driving assembly (509).

2. The CT detector module assembly auxiliary tooling according to claim 1, characterized in that: The clamp block driving assembly (509) includes a push rod (5094) and a push rod support block (5095), wherein the push rod support block (5095) is fixedly mounted on the tooling base plate (503), the push rod (5094) is threadedly inserted into the push rod support block (5095), the front end of the push rod (5094) is fixedly connected to a connecting block (511), the lower end of the connecting block (511) is fixedly connected to a clamp block connecting plate (510), and the two ends of the clamp block connecting plate (510) are respectively fixedly connected to the movable clamp blocks (512) on the corresponding sides.

3. The CT detector module assembly auxiliary tooling according to claim 2, characterized in that: The front end of the push rod (5094) passes through the connecting block (511), and a spacer sleeve (5092) is provided between the push rod (5094) and the connecting block (511). A positioning plate (5091) is provided on the side of the connecting block (511) away from the push rod support block (5095), and a countersunk screw (5093) passes through the positioning plate (5091) and is threadedly connected to the front end of the push rod (5094).

4. The CT detector module assembly auxiliary tooling according to claim 1, characterized in that: The fixed clamp block (504) and the movable clamp block (512) are both provided with a clamp block support portion (514), and a support stop is formed on the upper side of the clamp block support portion (514).

5. The CT detector module assembly auxiliary tooling according to claim 1, characterized in that: The tooling base plate (503) is arranged on a positioning platform (501), and a PCB limiting block (502) and a PCB positioning column (506) are provided on the positioning platform (501), and the lower side of the scintillator PCB board (2) is supported by each PCB positioning column (506), and either side of the scintillator PCB board (2) is limited by the PCB limiting block (502).

6. The CT detector module assembly auxiliary tooling according to claim 5, characterized in that: The positioning platform (501) is provided with a tool positioning pin, and the tool base plate (503) is provided with a tool positioning hole (505) for the tool positioning pin to pass through.

7. The CT detector module assembly auxiliary tooling according to claim 1, characterized in that: A cushion block (513) having the same exposed height as the tooling positioning platform (507) is provided on the lower side of the tooling bottom plate (503).

8. The CT detector module assembly auxiliary tooling according to claim 1, characterized in that: The tooling bottom plate (503) is provided with a bottom plate recess (5033) at a position corresponding to the PCB mounting hole (203) of the scintillator PCB board (2).

9. The CT detector module assembly auxiliary tooling according to claim 1, characterized in that: The tooling positioning platform (507) is provided with an installation positioning pin (508).

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