Medical rotating arm and manufacturing process thereof

Abstract

This application relates to the field of medical molds, specifically disclosing a medical rotating arm and its manufacturing process. The medical rotating arm includes a support arm, an end-face gear, and a positioning plate. The end-face gear and the positioning plate are fixed horizontally to the same end of the support arm. A mounting groove is provided between the end-face gear and the positioning plate. The support arm, the end-face gear, and the positioning plate are all integrally formed in a rotating arm mold using resin-impregnated carbon fiber cloth and hot-press casting. The medical rotating arm of this application can be used in CT scanning equipment and X-ray machines. It has good mechanical properties, can withstand large forces without rotating, reduces the use of metal materials, and avoids the problem of metal materials affecting the imaging accuracy of scanning equipment.

Description

Technical Field

[0001] This application relates to the field of medical molds, and more specifically, to a medical rotary arm and its manufacturing process. Background Technology

[0002] A medical rotary arm is a support arm that can provide multi-angle movement. Typically, one end of the rotary arm is connected to a drive unit to drive the rotation of the arm, while the other end carries a detection device for detecting human tissue, such as X-ray machines and CT scanners. By rotating the arm, more detection angles are provided, allowing medical personnel to make more accurate judgments about diseased tissues.

[0003] Currently, most commonly used medical rotating arms are made of metal. In the manufacturing process, the metal is usually heated to a liquid or semi-liquid state first, and then the liquid or semi-liquid metal is filled into the mold cavity at an extremely high speed and solidified under pressure to obtain a die-cast part.

[0004] Regarding the aforementioned technologies, the inventors believe that the use of a metal medical rotating arm will interfere with the imaging results of the scanning equipment, which is not conducive to medical personnel making diagnoses. Summary of the Invention

[0005] To address the problem that metal medical rotating arms in related technologies can interfere with imaging, this application provides a medical rotating arm and its manufacturing process.

[0006] In a first aspect, this application provides a medical rotating arm, which adopts the following technical solution:

[0007] A medical rotating arm includes a support arm, an end face gear, and a positioning plate. The end face gear and the positioning plate are fixed to the same end of the support arm in a horizontal direction. An installation groove is reserved between the end face gear and the positioning plate. The support arm, the end face gear, and the positioning plate are all integrally formed by resin impregnation of carbon fiber cloth and hot die casting in a rotating arm mold.

[0008] By adopting the above technical solution, the medical rotating arm in this application improves its structural strength by using an integral molding method during its fabrication. The carbon fiber cloth used in the rotating arm is impregnated with resin, which improves the structural strength of the rotating arm by combining organic and inorganic materials. It also has the advantage of being lightweight. Furthermore, since the rotating arm does not contain any metal materials, it is less prone to unclear imaging during CT scanning, making it well-suited for X-ray or CT scanning imaging.

[0009] Preferably, the rotating arm mold includes a lower mold, a special-shaped forming component, a fixing member, and an upper mold. The end of the lower mold is fixedly connected to the fixing member, the end of the upper mold abuts against the fixing member, the lower surface of the upper mold abuts against and is aligned with the upper surface of the lower mold, a mold cavity is provided between the upper mold and the lower mold, and the special-shaped forming component is disposed in the mold cavity at one end away from the fixing member.

[0010] By adopting the above technical solution and setting irregular forming components in the mold cavity, it is easier to form irregular structures. At the same time, by setting a fixing part, the mold pressing accuracy is improved during the pressing process of the upper and lower molds. The operator only needs to make the upper mold abut against the fixing part, and then move the upper mold from top to bottom along the side wall of the fixing part to align the upper and lower molds, so as to make the mold pressing accuracy higher.

[0011] Preferably, the mold cavity includes a support arm cavity for forming the support arm and a special-shaped forming cavity for forming the end face gear and the positioning plate, wherein the support arm cavity and the special-shaped forming cavity are connected.

[0012] By adopting the above technical solution, and by connecting the arm cavity and the irregular forming cavity, it is easier to integrally form the medical rotating arm during manufacturing, thereby improving the structural strength of the rotating arm, enabling it to withstand larger loads without breaking, and reducing the possibility of the prepared medical rotating arm breaking at the connection point.

[0013] Preferably, the irregular forming component includes an abutment post, an irregular part, and a positioning member. The upper end of the abutment post is fixedly connected to the end of the irregular forming cavity near the upper mold. The lower end of the abutment post abuts against the upper surface of the irregular part. The upper end of the positioning member abuts against the lower surface of the irregular part. The abutment post, the irregular part, and the positioning member are arranged sequentially from top to bottom. The irregular part is detachably disposed at the end of the irregular forming cavity near the lower mold. The sidewall of the irregular part fits against the sidewall of the lower mold that forms the irregular forming cavity.

[0014] By adopting the above technical solution, the upper end of the irregular part abuts against the abutting post, and the lower end of the irregular part abuts against the positioning part, thereby forming an irregularly shaped component. During the pre-die-casting material loading process, resin-impregnated carbon fiber can be filled first until it is flush with the upper surface of the positioning part. Then, the irregular part is installed, and the material loading continues until the resin-impregnated carbon fiber is flush with the upper surface of the irregular part. The material loading is performed again, and finally, the upper and lower molds are die-cast to obtain the medical rotating component. Since the high-precision structural positions are detachably connected through the abutting post, the irregular part, and the positioning part during the manufacturing process of the medical rotating component, the gaps in the irregularly shaped component are also filled with resin-impregnated carbon fiber, avoiding the possibility of gaps appearing at the rear end face gear and positioning plate of the rotating arm, which would affect the structural precision and structural strength.

[0015] Preferably, the irregular part includes an irregular block, a support block, and a snap-fit ​​block. The upper surface of the irregular block abuts against the abutting post. The lower surface of the irregular block and the upper surface of the support block are both inclined and fit together. The lower end of the support block abuts against the positioning member. The snap-fit ​​blocks are respectively disposed on the sidewalls of the support block and the irregular block facing away from the support arm cavity. The sidewall of the irregular forming cavity is provided with a snap-fit ​​groove in the vertical direction for the snap-fit ​​blocks to move in the vertical direction.

[0016] By adopting the above technical solution, by setting a snap-fit ​​block, the snap-fit ​​block can move along the length direction of the snap-fit ​​groove, thereby assembling the support block and the irregular block together. Since the lower surface of the irregular block is provided with an inclined surface that abuts and fits against the upper surface of the support block, the support block and the irregular block are fixed together as the irregular block and the support block move downward in the vertical direction, reducing the possibility of the rotating arm's accuracy being affected by the offset of the support block and the irregular block during the molding process.

[0017] Preferably, the irregular block includes a base, an end face beveled tooth ring, and a fixing post. The lower surface of the base abuts against the support block, and the upper surface of the base has a mold opening groove. The end face beveled tooth ring with the beveled teeth facing upward and the fixing post arranged in the vertical direction are both fixedly connected in the mold opening groove. The fixing post is located at the center of the end face beveled tooth ring, and the upper surface of the fixing post abuts against the lower surface of the abutting post. The upper surface of the base is flush with the upper surface of the lower mold, and the fixing post protrudes from the upper surface of the base in the horizontal direction.

[0018] By adopting the above technical solution and setting an end face bevel gear ring, during the mold forming process, resin and carbon fiber cloth are laid on the end face bevel gear ring, and the fixing post protrudes from the upper surface of the base. After mold closing, an end face gear will be formed on the medical rotating arm. Since the upper mold is also provided with an abutment post, it is convenient to form an opening on the medical rotating arm, which is convenient to be compatible with other workpieces.

[0019] Preferably, the positioning component includes a positioning post and an adjusting plate. The upper surface of the positioning post abuts against the lower surface of the support block, and the lower end of the positioning post is fixedly connected to the adjusting plate. The diameter of the positioning post is smaller than the diameter of the adjusting plate. The lower mold has an adjusting groove that communicates with the irregular forming cavity. The adjusting plate extends into the adjusting groove and moves vertically to adjust the position of the positioning component.

[0020] By adopting the above technical solution, by setting positioning posts and adjusting plates, openings and slots can be formed on the side wall of the positioning plate. The operator can adjust the position of the positioning posts and adjusting plates to adjust the depth of the formed slots, thereby further improving the compatibility with other workpieces.

[0021] Preferably, the upper mold includes a first mold near the irregular forming cavity and a second mold near the support arm cavity. The first mold and the second mold abut against each other, and the second mold abuts against the fixing member. The first mold, the second mold, and the lower mold are all provided with connecting holes in the vertical direction. The connecting holes in the first mold and the second mold are aligned with the connecting holes in the lower mold. A connecting post is provided in the connecting hole in the vertical direction. The upper end of the connecting post is connected to the upper mold, and the lower end of the connecting post is connected to the lower mold.

[0022] By adopting the above technical solution, and by setting connecting columns and connecting holes, when mold closing is required, the connecting column is first inserted into the connecting hole of the lower mold. At this time, the upper end of the connecting column is exposed on the upper surface of the lower mold. Then, the first mold and the second mold are moved downward in the vertical direction until the upper end of the connecting column extends into the first mold and the second mold, thereby completing the mold closing. It has the advantages of high precision and less deviation during mold closing operation.

[0023] Secondly, this application provides a manufacturing process for a medical rotating arm, employing the following technical solution:

[0024] A manufacturing process for a medical rotating arm includes the following steps:

[0025] S1. Insert the positioning component into the adjustment groove and adjust the position of the positioning component. Heat the lower mold and the upper mold to 40-50 degrees Celsius and apply a release agent to the surface of the mold cavity.

[0026] S2. Lay a first carbon fiber cloth impregnated with acetal resin at the bottom of the mold cavity, and then lay a 0° acetal resin impregnated carbon fiber cloth and a 90° acetal resin impregnated carbon fiber cloth.

[0027] S3. When the upper surfaces of the laid 0° acetal resin impregnated carbon fiber cloth and 90° acetal resin impregnated carbon fiber cloth are flush with the upper surface of the positioning post, move the snap-fit ​​block along the length of the snap-fit ​​groove until the positioning post abuts against the support block, and then continue laying.

[0028] S4. A first carbon fiber cloth impregnated with acetal resin is laid again on the top layer of the mold cavity;

[0029] S5. Align the upper mold and the lower mold, and close the mold;

[0030] S6. Place the upper mold and the lower mold in the middle position of the press, adjust the temperature to 140-150℃, die-cast, cool, and remove the medical rotating arm.

[0031] By adopting the above technical solution, carbon fiber cloth is impregnated with acetal resin while manufacturing the medical rotating arm. By using different laying angles, the structural strength of the medical rotating arm is improved. Furthermore, by first adjusting the positioning parts and then laying the cloth, and then adjusting the irregular parts and laying it again, the forming accuracy of the medical rotating arm is improved.

[0032] Preferably, the first carbon fiber cloth is a warp and weft woven carbon fiber cloth, the 0° acetal resin impregnated carbon fiber cloth is an acetal resin impregnated carbon fiber cloth arranged along the length direction of the lower mold, and the 90° acetal resin impregnated carbon fiber cloth is an acetal resin impregnated carbon fiber cloth arranged along the width direction of the lower mold; the layer ratio of the first carbon fiber cloth, the 0° acetal resin impregnated carbon fiber cloth and the 90° acetal resin impregnated carbon fiber cloth is 2:7-10:1-2.

[0033] By adopting the above technical solution and adjusting the arrangement and layer ratio of the resin-impregnated carbon fiber cloth, the strength of the resulting medical rotating arm is increased.

[0034] In summary, this application has the following beneficial effects:

[0035] 1. Because the medical rotating arm of this application improves the structural strength of the prepared rotating arm by combining inorganic carbon fiber materials and organic resin, and no metal materials are added during the preparation process, the imaging accuracy is higher when using CT scans or X-ray machines.

[0036] 2. Since the irregular part and the irregular forming cavity of this application are detachably connected, when the irregular part wears out in a high-precision area, the operator can replace the irregular part to reduce the problem of reduced precision caused by equipment wear.

[0037] 3. By moving the snap-fit ​​block along the length of the snap-fit ​​groove until the inclined surfaces of the support block and the irregular block fit together, the stability of the support block and the irregular block is further improved, reducing the possibility of the support block and the irregular block shifting during the molding process, and improving the accuracy of the manufactured medical rotating arm. Attached Figure Description

[0038] Figure 1 A schematic diagram of the overall structure of the medical rotating arm according to an embodiment of this application;

[0039] Figure 2 This is an exploded structural diagram of the rotary arm mold according to an embodiment of this application;

[0040] Figure 3 This is an exploded structural diagram of the irregularly shaped molding component according to an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of the exploded structure of the irregularly shaped component according to an embodiment of this application;

[0042] Reference numerals: 1. Support arm; 2. End face gear; 3. Positioning plate; 4. Mounting groove; 5. First mounting hole; 6. Second mounting hole; 7. Positioning groove; 8. Third mounting hole; 9. Rotating arm mold; 10. Lower mold; 11. Irregular forming component; 12. Fixing component; 13. Upper mold; 14. Mold cavity; 15. Support arm cavity; 16. Irregular forming cavity; 17. Fixing plate; 18. Socket head bolt; 19. Positioning shaft; 20. First mold; 21. Second mold; 22. Connecting hole; 23. Connecting post; 24. Abutment post; 25. Irregular part; 26. Positioning component; 27. Positioning post; 28. Adjusting plate; 29. ​​Adjusting groove; 30. Irregular block; 31. Support block; 32. Snap-fit ​​block; 33. Snap-fit ​​groove; 34. Base; 35. End face bevel gear ring; 36. Fixing post; 37. Mold opening groove. Detailed Implementation

[0043] A medical rotating arm, reference Figure 1 The device includes a support arm 1, an end face gear 2, and a positioning plate 3. The support arm 1 is arranged in a horizontal direction. The end face gear 2 and the positioning plate 3 are arranged in a horizontal direction at the same end of the support arm 1, and the end face gear 2 and the positioning plate 3 are located on the upper and lower sides of the support arm 1, respectively. The teeth of the end face gear 2 face the direction of the positioning plate 3, that is, the teeth of the end face gear 2 face downward. An installation groove 4 is reserved between the end face gear 2 and the positioning plate 3.

[0044] Reference Figure 1A first mounting hole 5 is vertically drilled through the center of the end face gear 2, and a second mounting hole 6 is vertically drilled through the positioning plate 3. Both the first mounting hole 5 and the second mounting hole 6 are connected to the mounting groove 4, and the line connecting the centers of the first mounting hole 5 and the second mounting hole 6 is perpendicular to the support arm 1. The diameter of the second mounting hole 6 is larger than the diameter of the first mounting hole 5. A positioning groove 7 is also formed on the side wall of the positioning plate 3 away from the first mounting hole 5. The opening of the positioning groove 7 is circular, and the opening diameter of the positioning groove 7 is larger than the diameter of the second mounting hole 6. A third mounting hole 8 is formed on the side wall of the support arm 1 away from the end face gear 2 along the length of the support arm 1. In this application, the support arm 1, the end face gear 2, and the positioning plate 3 are integrally formed and are all integrally formed by resin impregnation of carbon fiber cloth and hot pressing within a rotating arm mold 9.

[0045] Reference Figure 2 and Figure 3 The rotating arm mold 9 includes a lower mold 10, a special-shaped forming component 11, a fixing component 12, and an upper mold 13. The lower surface of the upper mold 13 abuts and aligns with the lower surface of the lower mold 10. The upper mold 13 and the lower mold 10 are detachably connected. The end of the lower mold 10 away from the end face gear 2 is fixedly connected to the fixing component 12. The end of the upper mold 13 away from the end face gear 2 abuts against the fixing component 12. A mold cavity 14 is left between the upper mold 13 and the lower mold 10. The special-shaped forming component 11 is disposed in the mold cavity 14 at the end away from the fixing component 12. Through the cooperation of the special-shaped forming component 11 and the mold cavity 14, a medical rotating arm with a complex structure and high precision is die-cast.

[0046] Reference Figure 2 and Figure 3 The mold cavity 14 in this application includes a support arm cavity 15 and a special-shaped forming cavity 16. The support arm cavity 15 and the special-shaped forming cavity 16 are connected. The support arm cavity 15 is used to form the support arm 1 of the medical rotating arm, and the special-shaped forming cavity 16 is used to form the end face gear 2 and the positioning plate 3 that are arranged parallel to each other.

[0047] Reference Figure 2 and Figure 3 The fastener 12 includes a fixing plate 17 and a plurality of socket head cap screws 18. In this application, the fixing plate 17 is arranged vertically, and there are four socket head cap screws 18 arranged in a matrix. The length direction of the socket head cap screws 18 is parallel to the length direction of the lower mold 10. The socket head cap screws 18 pass through the fixing plate 17 and are threadedly connected to the lower mold 10. The end of the upper mold 13 abuts against the fixing plate 17.

[0048] Reference Figure 2 and Figure 3A positioning shaft 19 is welded horizontally to one end of the fixing plate 17 facing the mold cavity 14. In this application, two positioning shafts 19 are provided. By setting the positioning shafts 19, a third connecting hole 22 is formed at the end of the medical rotating arm away from the end face gear 2 during the mold forming process.

[0049] Reference Figure 2 and Figure 3 The upper mold 13 includes a first mold 20 and a second mold 21, both arranged horizontally. The first mold 20 and the second mold 21 abut against each other. The first mold 20 is located at one end near the irregular forming cavity 16, and the second mold 21 is located at one end near the fixing plate 17, with the sidewall of the second mold 21 abutting against the fixing plate 17. Connecting holes 22 are vertically formed on the lower surfaces of the first mold 20, the second mold 21, and the upper surface of the lower mold 10. Connecting posts 23 are vertically fitted into the connecting holes 22. When the upper mold 13 and the lower mold 10 are closed, the upper end of the connecting post 23 extends into the first mold 20 and the second mold 21, while the lower end of the connecting post 23 is located within the lower mold 10. By providing the connecting post 23, it is easier for the first mold 20, the second mold 21, and the lower mold 10 to close without easily shifting, resulting in higher precision in the manufactured medical rotating arm.

[0050] Reference Figure 2 and Figure 3 The irregular forming component 11 includes an abutment post 24, an irregular part 25, and a positioning part 26. The irregular forming component 11 is disposed in the irregular forming cavity 16. The abutment post 24 is arranged vertically, and the upper end of the abutment post 24 is integrally formed on the upper side wall of the irregular forming cavity 16. That is, the abutment post 24 is integrally formed with the first mold 20. The lower end of the abutment post 24 abuts against the irregular part 25. The lower surface of the irregular part 25 abuts against the upper surface of the positioning part 26. The irregular part 25 is detachably disposed in the irregular forming cavity 16, and the side wall of the irregular part 25 fits against the side wall of the irregular forming cavity 16. By providing the abutment post 24, it is convenient to form the first mounting hole 5 on the end face gear 2.

[0051] Reference Figure 3 and Figure 4 The positioning component 26 includes a positioning post 27 and an adjusting plate 28. The axes of the positioning post 27 and the adjusting plate 28 are both arranged in the vertical direction. The upper end of the positioning post 27 abuts against the irregular part 25, and the lower end of the positioning post 27 is welded to the upper surface of the adjusting plate 28. In this application, the diameter of the positioning post 27 is equal to the diameter of the second mounting hole 6, and the diameter of the adjusting plate 28 is equal to the diameter of the positioning groove 7. The lower mold 10 is provided with an adjusting groove 29 that communicates with the irregular forming cavity 16. The opening diameter of the adjusting groove 29 is equal to the diameter of the adjusting plate 28. The adjusting plate 28 can move along the length direction of the adjusting groove 29, thereby adjusting the position of the positioning component 26 in the mold cavity 14, and thus adjusting the depth of the formed positioning groove 7.

[0052] Reference Figure 3 and Figure 4 The irregular part 25 includes an irregular block 30, a support block 31 and a snap-fit ​​block 32. The irregular block 30 is disposed at the upper end of the support block 31. The lower surface of the irregular block 30 and the upper surface of the support block 31 are both inclined. The lower surface of the irregular block 30 and the upper surface of the support block 31 are both inclined from top to bottom from the irregular forming cavity 16 toward the support arm cavity 15. The lower surface of the irregular block 30 and the upper surface of the support block 31 are parallel and abut against each other.

[0053] Reference Figure 3 and Figure 4 The irregular molding cavity 16 has a snap-fit ​​groove 33 vertically formed on the side wall facing away from the support arm cavity 15. The snap-fit ​​blocks 32 are integrally formed on the side walls facing away from the support arm cavity 15 of the support block 31 and the irregular block 30, respectively. The snap-fit ​​block 32 located on the side wall of the support block 31 is integrally formed on the lower end of the support block 31, and the snap-fit ​​block 32 located on the side wall of the irregular block 30 is integrally formed on the upper end of the irregular block 30. The snap-fit ​​blocks 32 extend into the snap-fit ​​groove 33 and move vertically. By adjusting the position of the snap-fit ​​blocks 32, the possibility of carbon fiber and resin entering the snap-fit ​​groove 33 during the die casting process, thereby hindering the movement of the support block 31 and the irregular block 30, is reduced.

[0054] Reference Figure 3 and Figure 4 The irregular block 30 includes a base 34, an end face bevel ring 35, and a fixing post 36. The lower surface of the base 34 abuts against the support block 31, and the upper surface of the base 34 is parallel to the upper surface of the support block 31. A mold opening groove 37 is formed on the upper surface of the base 34. The upper surface of the base 34 is flush with the upper surface of the lower mold 10. The upper surface of the base 34 is also flush with the upper surface of the snap-fit ​​block 32 located on the side wall of the base 34. The end face bevel ring 35 and the fixing post 36 are both integrally formed. On the upper surface of the mold opening groove 37, the teeth of the end face bevel ring 35 are arranged facing upwards, and the fixing post 36 is arranged in the vertical direction. The center of the fixing post 36 coincides with the center of the end face bevel ring 35. The fixing post 36 is located at the center of the end face bevel ring 35. The upper end of the fixing post 36 abuts against the lower end of the abutting post 24, and the center of the fixing post 36 coincides with the center of the abutting post 24 in the vertical direction. In this application, the upper end face of the fixing post 36 protrudes from the upper surface of the base 34.

[0055] The manufacturing process of this medical rotating arm includes the following steps:

[0056] S1. Insert the positioning component 26 into the adjusting groove 29 and adjust the position of the positioning component 26. Heat the lower mold 10 and the upper mold 13 to 45 degrees. Apply a release agent to the surface of the mold cavity 14. The release agent can be an organosilicon release agent.

[0057] S2. A first carbon fiber cloth impregnated with acetal resin is laid at the bottom of the mold cavity 14, followed by 0° acetal resin impregnated carbon fiber cloth and 90° acetal resin impregnated carbon fiber cloth. The first carbon fiber cloth is a warp and weft woven carbon fiber cloth, the 0° acetal resin impregnated carbon fiber cloth is an acetal resin impregnated carbon fiber cloth arranged along the length direction of the lower mold 10, and the 90° acetal resin impregnated carbon fiber cloth is an acetal resin impregnated carbon fiber cloth arranged along the width direction of the lower mold 10.

[0058] S3. When the upper surfaces of the laid 0° acetal resin impregnated carbon fiber cloth and 90° acetal resin impregnated carbon fiber cloth are flush with the upper surface of the positioning post 27, move the snap-fit ​​block 32 along the length of the snap-fit ​​groove 33 until the positioning post 27 abuts against the support block 31, and then continue laying.

[0059] S4. The first carbon fiber cloth impregnated with acetal resin is laid again on the top layer of the mold cavity 14, wherein the ratio of the number of layers of the first carbon fiber cloth, the 0° acetal resin impregnated carbon fiber cloth and the 90° acetal resin impregnated carbon fiber cloth is 2:10:2.

[0060] S5. Align the upper mold 13 and the lower mold 10, and close the mold;

[0061] S6. Place the upper mold 13 and the lower mold 10 in the middle position of the press, adjust the temperature to 145℃, die-cast, cool, and remove the medical rotating arm.

[0062] Performance testing

[0063] Imaging effect detection

[0064] The fabricated medical rotating arm was installed on a C-arm X-ray machine. The X-ray machine was used in accordance with the "YY / T0744-2009 Special Technical Conditions for Mobile C-arm X-ray Machines". The presence of strip-shaped or radial metal artifacts was observed. After observation, it was found that the medical rotating arm prepared in this application had good imaging effect and no metal artifacts were present.

[0065] Strength testing of medical rotating arms

[0066] One end of the medical rotating arm, equipped with the end face gear 2, is mounted on a C-arm X-ray machine. A force gauge is fixed at the other end of the medical rotating arm. At this time, the medical rotating arm cannot rotate without a drive. The operator holds the force gauge and applies a force perpendicular to the medical rotating arm to the force gauge, and slowly increases the force pulling the force gauge. The magnitude of the force on the force gauge is observed when the end face gear 2 of the medical rotating arm rotates. The observation result is that the end face gear 2 moves when a force of 400N is applied.

[0067] In other words, by conducting imaging effect and strength tests on the manufactured medical rotating arm, it can be seen that the manufactured medical rotating arm has good structural strength and mechanical properties, and at the same time, it has good imaging effect when used on an X-ray machine.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A medical rotating arm, comprising a support arm (1), an end face gear (2), and a positioning plate (3), wherein the end face gear (2) and the positioning plate (3) are fixed horizontally to the same end of the support arm (1), and a mounting groove (4) is provided between the end face gear (2) and the positioning plate (3), characterized in that, The support arm (1), the end face gear (2), and the positioning plate (3) are all integrally formed in a rotating arm mold (9) by resin impregnation of carbon fiber cloth and hot pressing. The rotating arm mold (9) includes a lower mold (10), a special-shaped forming component (11), a fixing component (12), and an upper mold (13). The end of the lower mold (10) is fixedly connected to the fixing component (12), the end of the upper mold (13) abuts against the fixing component (12), the lower surface of the upper mold (13) abuts against and aligns with the upper surface of the lower mold (10), and a mold cavity (14) is left between the upper mold (13) and the lower mold (10). The special-shaped forming component (11) is located in the mold cavity (14) at one end away from the fixing component (12). The mold cavity (14) includes a support arm cavity (15) for forming the support arm (1) and a cavity for positioning the end face gear (1). 2) The irregularly shaped cavity (16) formed by the positioning plate (3) is connected to the support arm cavity (15); the irregularly shaped assembly (11) includes an abutment post (24), an irregularly shaped part (25), and a positioning part (26). The upper end of the abutment post (24) is fixedly connected to one end of the irregularly shaped cavity (16) near the upper mold (13), and the lower end of the abutment post (24) abuts against the irregularly shaped part (25). The upper surface of the positioning member (26) abuts against the lower surface of the irregular part (25). The abutting post (24), the irregular part (25) and the positioning member (26) are arranged sequentially from top to bottom. The irregular part (25) is detachably arranged at one end of the irregular forming cavity (16) near the lower mold (10). The side wall of the irregular part (25) is in contact with the side wall of the irregular forming cavity (16) formed by the lower mold (10).

2. A medical rotating arm according to claim 1, characterized in that: The irregular part (25) includes an irregular block (30), a support block (31) and a snap-fit ​​block (32). The upper surface of the irregular block (30) abuts against the abutting post (24). The lower surface of the irregular block (30) and the upper surface of the support block (31) are both inclined and fit together. The lower end of the support block (31) abuts against the positioning member (26). The snap-fit ​​block (32) is respectively disposed on the side wall of the support block (31) and the irregular block (30) facing away from the arm cavity (15). The side wall of the irregular forming cavity (16) is provided with a snap-fit ​​groove (33) in the vertical direction for the snap-fit ​​block (32) to move in the vertical direction.

3. A medical rotating arm according to claim 2, characterized in that: The irregular block (30) includes a base (34), an end face bevel ring (35), and a fixing post (36). The lower surface of the base (34) abuts against the support block (31). The upper surface of the base (34) is provided with a mold opening groove (37). The end face bevel ring (35) with the bevel teeth facing upward and the fixing post (36) arranged in the vertical direction are both fixedly connected in the mold opening groove (37). The fixing post (36) is located at the center of the end face bevel ring (35). The upper surface of the fixing post (36) abuts against the lower surface of the abutting post (24). The upper surface of the base (34) is flush with the upper surface of the lower mold (10). The fixing post (36) protrudes from the upper surface of the base (34) in the horizontal direction.

4. A medical rotating arm according to claim 2, characterized in that: The positioning component (26) includes a positioning post (27) and an adjusting plate (28). The upper surface of the positioning post (27) abuts against the lower surface of the support block (31). The lower end of the positioning post (27) is fixedly connected to the adjusting plate (28). The diameter of the positioning post (27) is smaller than the diameter of the adjusting plate (28). The lower mold (10) has an adjusting groove (29) that communicates with the irregular forming cavity (16). The adjusting plate (28) extends into the adjusting groove (29) and moves vertically to adjust the position of the positioning component (26).

5. A medical rotating arm according to claim 1, characterized in that: The upper mold (13) includes a first mold (20) near the irregular forming cavity (16) and a second mold (21) near the support arm cavity (15). The first mold (20) and the second mold (21) abut against each other, and the second mold (21) abuts against the fixing member (12). The first mold (20), the second mold (21) and the lower mold (10) are all provided with connecting holes (22) in the vertical direction. The connecting holes (22) in the first mold (20) and the second mold (21) are aligned with the connecting holes (22) in the lower mold (10). A connecting post (23) is provided in the connecting hole (22) in the vertical direction. The upper end of the connecting post (23) is connected to the upper mold (13), and the lower end of the connecting post (23) is connected to the lower mold (10).

6. A manufacturing process for a medical rotating arm according to any one of claims 1-5, characterized in that, Includes the following steps: S1. Insert the positioning element (26) into the adjustment groove (29) and adjust the position of the positioning element (26). Heat the lower mold (10) and the upper mold (13) to 40-50 degrees and apply a release agent to the surface of the mold cavity (14). S2. A first carbon fiber cloth impregnated with acetal resin is laid at the bottom of the mold cavity (14), followed by 0° acetal resin impregnated carbon fiber cloth and 90° acetal resin impregnated carbon fiber cloth. S3. When the upper surfaces of the 0° acetal resin impregnated carbon fiber cloth and the 90° acetal resin impregnated carbon fiber cloth are flush with the upper surface of the positioning post (27), move the snap block (32) along the length of the snap groove (33) until the positioning post (27) abuts against the support block (31), and then continue laying. S4. The first carbon fiber cloth impregnated with acetal resin is laid again on the top layer of the mold cavity (14); S5. Align the upper mold (13) and the lower mold (10) and close the mold; S6. Place the upper mold (13) and the lower mold (10) in the middle position of the press, adjust the temperature to 140-150℃, die-cast, cool, and remove the medical rotating arm.

7. The manufacturing process of a medical rotating arm according to claim 6, characterized in that: The first carbon fiber cloth is a warp and weft woven carbon fiber cloth, the 0° acetal resin impregnated carbon fiber cloth is an acetal resin impregnated carbon fiber cloth arranged along the length direction of the lower mold (10), and the 90° acetal resin impregnated carbon fiber cloth is an acetal resin impregnated carbon fiber cloth arranged along the width direction of the lower mold (10); the layer ratio of the first carbon fiber cloth, the 0° acetal resin impregnated carbon fiber cloth and the 90° acetal resin impregnated carbon fiber cloth is 2:7-10:1-2.

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