Drug delivery device detection tool and method

Abstract

The present invention provides a drug delivery device detection tool and method, which relates to the technical field of detection tools. The detection tool includes a detection box, a detection table is provided in the detection box, a mounting plate is provided on the detection table, a support plate is provided on the front side wall of the mounting plate, a movable seat is slidably provided on the support plate, a placement hole is provided in the movable seat, a through hole corresponding to the placement hole is provided in the support plate, and a detection mechanism is provided below the through hole. The detection mechanism includes a vertical cylinder, a linear guide is provided on one side of the vertical cylinder, a slide is slidably provided on the linear guide, a sliding plate is provided on the side of the slide away from the vertical cylinder, a displacement sensor is provided on the side of the slide away from the slide, and a limit sleeve is provided on the upper end of the slide. In the present invention, the high-precision contact displacement sensor can accurately measure the multiple displacements of the push rod inside the tested product, thereby detecting the injection dose, thereby improving the accuracy and reliability of the injection dose detection of the drug delivery device.

Description

Technical Field

[0001] The present invention relates to the technical field of detection tools, and in particular to a drug delivery device detection tool and method. Background Art

[0002] Drug delivery devices, such as injection pens, are mainly used to inject drugs. Drug delivery device detection tools are used to detect whether the injection dosage of the drug delivery device is accurate.

[0003] Chinese patent application number 202310781141.0 discloses a detection tool and detection method for medical injection pens, comprising a detection box, the detection box comprising a box shell and a cover shell, the cover shell being buckled and mounted on the front end face of the box shell, and the cover shell being fixedly connected to the box shell; a positioning frame assembly, the positioning frame assembly comprising a lower bracket and an upper pressing frame, the lower bracket being fixedly mounted on the front end face of the box shell, the upper pressing frame being arranged directly above the lower bracket, and the upper pressing frame being longitudinally slidably connected to the lower bracket, and a first electric cylinder being installed between the lower bracket and the upper pressing frame. The present invention fixes the positioning frame assembly in the box shell, and when in use, the spacing between the lower bracket and the upper pressing frame can be flexibly adjusted by a second electric cylinder. When the injection pen needs to be placed, the lower bracket and the upper pressing frame can be separated from each other, so that the operator can quickly place the injection pen to be tested in the tapered bracket. The transparent test tubes are photographed in sequence. After the measuring and photographing mechanism is started to photograph once, the angle motor is started to rotate the next transparent test tube to the photographing position for photographing again. All transparent test tubes are photographed and recorded in sequence and displayed in real time through the display component.

[0004] The above-mentioned detection tool ensures that the pictures taken by the shooting component are displayed by setting the display component, which is convenient for the operator to observe better. However, when taking pictures, the pictures taken will have errors due to the influence of the shooting equipment, shooting angle, lighting conditions, etc., resulting in low accuracy of dose detection, especially for the dose accuracy under small doses. It is difficult to accurately determine. Summary of the Invention

[0005] The present invention provides a drug delivery device detection tool and method, which are used to solve the technical problem of low detection accuracy when detecting the injection dose of a drug delivery device by taking pictures.

[0006] In order to solve the above technical problems, the present invention discloses a drug delivery device detection tool, comprising: a detection box, a detection table is arranged in the detection box, a mounting plate is vertically arranged on the detection table, a support plate is arranged on the front side wall of the mounting plate, a movable seat is slidingly arranged on the support plate, the movable seat is driven by a horizontal cylinder, the horizontal cylinder is arranged on the front side wall of the mounting plate, a placement hole is arranged in the movable seat, the placement hole is used to place the product to be tested, a pressing mechanism is arranged above the movable seat, a rotating mechanism is arranged on one side of the pressing mechanism, a through hole corresponding to the placement hole is arranged in the support plate, a detection mechanism is arranged below the through hole, the detection mechanism includes a vertical cylinder, and the vertical cylinder is arranged On the testing table, a linear guide is arranged on one side of the vertical cylinder, fixed plates are arranged at the upper and lower ends of the linear guide, a slide is arranged on the linear guide, a sliding plate is arranged on the side of the slide away from the vertical cylinder, the lower end of the sliding plate is connected to the fixed plate through a compression spring, a displacement sensor is arranged on the side of the sliding plate away from the slide, a limit sleeve is arranged on the upper end of the sliding plate, the probe head of the displacement sensor passes through the limit sleeve and extends to the top of the limit sleeve, the limit sleeve is located directly below the through hole, a programmable controller is arranged in the testing box, and a display screen is arranged outside the testing box, and the programmable controller is electrically connected to the horizontal cylinder, vertical cylinder, displacement sensor and display screen respectively.

[0007] Preferably, the pressing mechanism includes a horizontal plate, a pressing cylinder and a pressure head. The horizontal plate is horizontally arranged at the upper end of the mounting plate, the pressing cylinder is arranged at the front end of the horizontal plate, the pressing head is arranged at the lower end of the pressing cylinder, the pressure head is located directly above the through hole, and the pressing cylinder is electrically connected to the programmable controller.

[0008] Preferably, the rotating mechanism includes a first servo motor arranged on the front side wall of the mounting plate, a screw is arranged at the output end of the first servo motor, a slider is arranged for sliding on the screw, a second servo motor is arranged on the front side wall of the slider, and an electric clamp is arranged at the lower end of the second servo motor, and the first servo motor, the second servo motor and the electric clamp are electrically connected to the programmable controller respectively.

[0009] Preferably, a two-hand start button is provided on the upper surface of the front end of the testing platform, the two-hand start button is located outside the testing box, and the two-hand start button is electrically connected to the programmable controller.

[0010] Preferably, a number of anti-slip mechanisms are arranged at equal intervals along the axial direction of the placement hole in the movable seat, and the anti-slip mechanism includes two mounting holes, which are symmetrically arranged on the left and right sides of the placement hole, one end of the mounting hole is connected to the placement hole, an electric push rod is arranged in the mounting hole, the electric push rod is electrically connected to the programmable controller, one end of the electric push rod is connected to the inner wall of the mounting hole, a push block is arranged near one end of the electric push rod to slide left and right with the inner wall of the mounting hole.

[0011] Preferably, two mounting grooves are provided on one side of the push block close to the placement hole, the two mounting grooves are symmetrically arranged front to back, and a moving block is provided in the mounting groove, and the moving block slides back and forth along the mounting groove.

[0012] Preferably, a sliding groove is provided on the front side wall of the moving block, a rotating disk is provided in the sliding groove, and the rotating disk is rotatably connected to the moving block through a connecting mechanism, and the rotating disk is semicircular.

[0013] Preferably, the rotating disk is made of elastic non-slip material.

[0014] Preferably, the connecting mechanism includes an arc-shaped groove arranged inside the moving block, an arc-shaped rod is slidably arranged in the arc-shaped groove, one end of the arc-shaped rod is connected to the inner wall of the arc-shaped groove through a connecting spring, and the other end of the arc-shaped rod is connected to the outer wall of the rotating disk through a connecting block, and the connecting block is located at one end away from each other of the two rotating disks.

[0015] A drug delivery device detection method, using the above-mentioned drug delivery device detection tool for detection, comprises the following steps:

[0016] Step 1: Place the product under test into the placement hole of the movable base. The product under test is fixed on the movable base. Then the pressing mechanism presses down the knob of the product under test to the initial position. The displacement sensor detects the actual position of the lower end of the push rod of the product under test and records it.

[0017] Step 2: The pressing mechanism resets, and the horizontal cylinder moves the movable base to the bottom of the rotating mechanism. The rotating mechanism rotates the knob of the product under test to a preset angle, and then the movable base is moved to the bottom of the pressing mechanism. The pressing mechanism presses down the knob of the product under test until the knob returns to its initial position. The displacement sensor detects the actual displacement of the lower end of the push rod of the product under test and records it;

[0018] Step 3: Repeat step 2 to test the product under test multiple times, and compare the actual displacement of the lower end of the push rod of the product under test with the preset displacement range. When the actual displacement is within the preset displacement range, the product under test is judged to be qualified.

[0019] The technical solution of the present invention has the following advantages: the present invention discloses a drug delivery device detection tool and method, the detection tool comprises: a detection box, a detection table is arranged in the detection box, a mounting plate is vertically arranged on the detection table, a support plate is arranged on the front side wall of the mounting plate, a movable seat is slidingly arranged on the support plate, the movable seat is driven by a horizontal cylinder, the horizontal cylinder is arranged on the front side wall of the mounting plate, a placement hole is arranged in the movable seat, the placement hole is used to place the product to be tested, a pressing mechanism is arranged above the movable seat, a rotating mechanism is arranged on one side of the pressing mechanism, a through hole corresponding to the placement hole is arranged in the support plate, a detection mechanism is arranged below the through hole, the detection mechanism comprises a vertical cylinder, A vertical cylinder is disposed on a test table, a linear guide is disposed on one side of the vertical cylinder, fixed plates are disposed at the upper and lower ends of the linear guide, a slide is disposed on the linear guide, a sliding plate is disposed on the side of the slide away from the vertical cylinder, the lower end of the sliding plate is connected to the fixed plate via a compression spring, a displacement sensor is disposed on the side of the slide away from the slide, a limit sleeve is disposed at the upper end of the sliding plate, a probe head of the displacement sensor extends through the limit sleeve to the top of the limit sleeve, and the limit sleeve is located directly below the through hole, a programmable controller is disposed within the test box, and a display screen is disposed outside the test box, the programmable controller is electrically connected to the horizontal cylinder, the vertical cylinder, the displacement sensor, and the display screen, respectively. In the present invention, a high-precision contact displacement sensor can accurately measure multiple displacements of the push rod inside the tested product, thereby detecting the injection dose, thereby improving the accuracy and reliability of injection dose detection of the drug delivery device.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the devices particularly pointed out in the written description and the accompanying drawings.

[0021] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a front view of the internal structure of a drug delivery device detection tool of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the detection box in the present invention;

[0025] Figure 3 Schematic diagram of the internal structure of the detection box in the present invention;

[0026] Figure 4 For the present invention Figure 1Partial cross-sectional view at AA in the middle;

[0027] Figure 5 For the present invention Figure 4 A magnified view of the structure at point B in the middle;

[0028] Figure 6 For the present invention Figure 5 A magnified view of the structure at point C in the middle;

[0029] Figure 7 For the present invention Figure 6 Enlarged view of the structure at point D in the middle.

[0030] Figure: 1. Test box; 2. Test table; 3. Mounting plate; 4. Support plate; 5. Moving seat; 6. Horizontal cylinder; 7. Placement hole; 8. Tested product; 9. Vertical cylinder; 10. Linear guide; 11. Slide; 12. Sliding plate; 13. Compression spring; 14. Displacement sensor; 15. Limit sleeve; 16. Horizontal plate; 17. Pressing cylinder; 18. Pressing head; 19. First servo motor; 20. Second servo motor; 21. Electric gripper ; 22. Two-hand start button; 23. Mounting hole; 24. Electric push rod; 25. Push block; 26. Moving block; 27. Rotating disk; 28. Arc groove; 29. ​​Arc rod; 30. Connecting spring; 31. Connecting block; 32. First rack; 33. Fixed block; 34. Rotating column; 35. Groove; 36. Mounting cavity; 37. Second rack; 38. Contact ball; 39. Connecting gear; 40. Third rack; 41. Friction belt; 42. Reel. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0032] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] Example 1

[0034] The embodiment of the present invention provides a drug delivery device detection tool, such as Figure 1-Figure 7 As shown, it includes: a detection box 1, a detection table 2 is arranged in the detection box 1, a mounting plate 3 is vertically arranged on the detection table 2, a support plate 4 is arranged on the front side wall of the mounting plate 3, a moving seat 5 is slidably arranged on the support plate 4, and the moving seat 5 is driven by a horizontal cylinder 6, which is arranged on the front side wall of the mounting plate 3, a placement hole 7 is arranged in the moving seat 5, and the placement hole 7 is used to place the product 8 to be tested, a pressing mechanism is arranged above the moving seat 5, and a rotating mechanism is arranged on one side of the pressing mechanism, a through hole corresponding to the placement hole 7 is arranged in the support plate 4, and a detection mechanism is arranged below the through hole, and the detection mechanism includes a vertical cylinder 9, which is arranged on the detection table 2, and a linear guide rail 10 is arranged on one side of the vertical cylinder 9. Fixed plates are provided at the upper and lower ends of the linear guide rail 10, a slide 11 is slidably provided on the linear guide rail 10, a sliding plate 12 is provided on the side of the slide 11 away from the vertical cylinder 9, the lower end of the sliding plate 12 is connected to the fixed plate through a compression spring 13, a displacement sensor 14 is provided on the side of the sliding plate 12 away from the slide 11, a limiting sleeve 15 is provided on the upper end of the sliding plate 12, a probe head of the displacement sensor 14 passes through the limiting sleeve 15 and extends to the top of the limiting sleeve 15, and the limiting sleeve 15 is located directly below the through hole, a programmable controller is provided in the detection box 1, and a display screen is provided outside the detection box 1, and the programmable controller is electrically connected to the horizontal cylinder 6, the vertical cylinder 9, the displacement sensor 14 and the display screen respectively;

[0035] The pressing mechanism includes a horizontal plate 16, a pressing cylinder 17 and a pressing head 18. The horizontal plate 16 is horizontally arranged at the upper end of the mounting plate 3. The pressing cylinder 17 is arranged at the front end of the horizontal plate 16. The pressing head 18 is arranged at the lower end of the pressing cylinder 17. The pressing head 18 is located just above the through hole. The pressing cylinder 17 is electrically connected to the programmable controller.

[0036] The rotating mechanism includes a first servo motor 19 provided on the front side wall of the mounting plate 3, a screw provided at the output end of the first servo motor 19, a slider provided on the screw, a second servo motor 20 provided on the front side wall of the slider, and an electric clamp 21 provided at the lower end of the second servo motor 20. The first servo motor 19, the second servo motor 20, and the electric clamp 21 are electrically connected to a programmable controller respectively;

[0037] A two-hand start button 22 is provided on the upper front surface of the detection platform 2 . The two-hand start button 22 is located outside the detection box 1 . The two-hand start button 22 is electrically connected to the programmable controller.

[0038] The present application also provides a drug delivery device detection method, which uses the above-mentioned drug delivery device detection tool for detection, including the following steps:

[0039] Step 1: The product 8 to be tested is placed in the placement hole 7 of the movable base 5. The product 8 to be tested is fixed on the movable base 5. Then, the pressing mechanism presses down the knob of the product 8 to the initial position. The actual position of the lower end of the internal push rod of the product 8 to be tested is detected by the displacement sensor 14 and recorded.

[0040] Step 2: The pressing mechanism is reset, and the horizontal cylinder 6 moves the movable base 5 to the bottom of the rotating mechanism. The rotating mechanism rotates the knob of the tested product 8 to a preset angle, and then the movable base 5 is moved to the bottom of the pressing mechanism. The pressing mechanism presses down the knob of the tested product 8 until the knob returns to its initial position. The actual displacement of the lower end of the push rod of the tested product 8 is detected by the displacement sensor 14 and recorded.

[0041] Step 3: Repeat step 2 to test the product 8 multiple times, and compare the actual displacement of the lower end of the push rod of the product 8 with the preset displacement range. When the actual displacement is within the preset displacement range, the product 8 is judged to be qualified.

[0042] The working principle and beneficial effects of the above technical solution are as follows: when testing the dosage of the drug delivery device, the product to be tested 8 is first placed in the placement hole 7 of the movable seat 5, the product to be tested 8 is fixed on the movable seat 5, and then the double-hand start button 22 is pressed. The programmable controller controls the downward pressure cylinder 17 to extend downward, and the pressure head 18 presses the knob of the product to be tested 8 until the knob is pressed down to the preset position. The vertical cylinder 9 is started, and the sliding plate 12 is driven to move upward through the slide 11. The sliding plate 12 drives the limiting sleeve 15 to move upward and abuts against the lower end of the product to be tested 8 through the through hole. The positioning sleeve 15 is against the lower end of the product 8 to be measured, which can ensure that each measurement is based on the edge plane of the lower end of the product 8 to be measured, further improving the accuracy of the injection dose measurement. Then the probe head of the displacement sensor 14 contacts the lower end of the push rod inside the product 8 to be measured. The displacement sensor 14 detects the actual position of the lower end of the push rod inside the product 8 to be measured and records it. Then the pressing mechanism is reset, the vertical cylinder 9 is reset, the horizontal cylinder 6 moves the moving seat 5 to the bottom of the rotating mechanism, the electric clamp 21 clamps the knob of the product 8 to be measured, and the second servo motor 20 rotates to drive the electric clamp 21 to rotate. Thereby driving the knob to rotate, while the second servo motor 20 rotates, the first servo motor 19 rotates to drive the slider to slide upward on the screw, so that the upward displacement of the slider is always equal to the vertical upward displacement of the knob, preventing the tested product 8 from falling out of the placement hole 7, until the knob of the tested product 8 rotates to a preset angle, and then the electric clamp 21 is released, and then the horizontal cylinder 6 moves the movable seat 5 to the bottom of the pressing mechanism, and presses down again, and the actual displacement of the lower end of the push rod of the tested product 8 is detected by the displacement sensor 14 and recorded; repeat step 2, and test the tested product 8 multiple times, and then The actual displacement of each time is compared with the preset displacement range to determine whether the product is qualified. When the actual displacement is within the preset displacement range, the tested product 8 is judged to be qualified. When the actual displacement is not within the preset displacement range, the tested product 8 is judged to be unqualified. The recorded actual displacement can be displayed on the display screen, which is convenient for the staff to intuitively confirm the injection dose of the tested product 8. In the present invention, the high-precision contact displacement sensor 14 can accurately measure multiple displacements of the push rod inside the tested product 8, thereby detecting the injection dose, thereby improving the accuracy and reliability of the injection dose detection of the drug delivery device.

[0043] Example 2

[0044] On the basis of the above embodiment 1, Figure 4-Figure 7As shown, a number of anti-slip mechanisms are arranged at equal intervals along the axial direction of the placement hole 7 in the movable seat 5, and the anti-slip mechanism includes two mounting holes 23, and the two mounting holes 23 are symmetrically arranged on the left and right sides of the placement hole 7. One end of the mounting hole 23 is connected to the placement hole 7, and an electric push rod 24 is arranged in the mounting hole 23. The electric push rod 24 is electrically connected to the programmable controller, and one end of the electric push rod 24 is connected to the inner wall of the mounting hole 23. A push block 25 is arranged near one end of the electric push rod 24 of the mounting hole 23, and the push block 25 is connected to the inner wall of the mounting hole 23 for sliding left and right.

[0045] The working principle and beneficial effects of the above technical solution are as follows: after the product 8 to be tested is placed in the placement hole 7, the electric push rod 24 is started. The electric push rod 24 is extended to drive the push block 25 to move toward the direction close to the product 8 to be tested until the push block 25 contacts the outer wall of the product 8 to be tested. At this time, the two push blocks 25 are clamped to stably maintain the product 8 to be tested in the placement hole 7, preventing the product 8 to be tested from rotating in the placement hole 7, thereby improving the accuracy and reliability of the detection. After the detection is completed, the electric push rod 24 is retracted, and the push block 25 is separated from the outer wall of the product 8 to remove the product 8 from the placement hole 7 of the movable seat 5.

[0046] Example 3

[0047] On the basis of Example 2, Figure 6 As shown, two mounting grooves are provided on one side of the push block 25 close to the placement hole 7. The two mounting grooves are symmetrically arranged front to back. A moving block 26 is provided in the mounting groove, and the moving block 26 slides back and forth along the mounting groove.

[0048] The working principle and beneficial effects of the above technical solution are as follows: by setting two moving blocks 26, when the push block 25 approaches the product to be tested 8, the two moving blocks 26 can first contact the outer wall of the product to be tested 8. Compared with the single-point contact of the push block 25, the contact range can be increased, thereby improving the reliability of the product to be tested 8 in the placement hole 7.

[0049] Example 4

[0050] On the basis of Example 3, Figure 6 As shown, a sliding groove is provided on the front side wall of the moving block 26, and a rotating disk 27 is provided in the sliding groove. The rotating disk 27 is rotatably connected to the moving block 26 through a connecting mechanism, and the rotating disk 27 is semicircular;

[0051] The rotating disk 27 is made of elastic anti-skid material.

[0052] The working principle and beneficial effects of the above technical solution are as follows: when the moving block 26 approaches the product 8 to be tested, the rotating disk 27 first contacts the outer wall of the product 8 to be tested, and the rotating disk 27 rotates in the sliding groove and fits with the outer wall of the product 8 to be tested. Since the rotating disk 27 is made of elastic anti-slip material, the rotating disk 27 can adapt to the shape of the product 8 to be tested when it fits with the product 8 to be tested, thereby increasing the contact area, enhancing the friction, and improving the anti-slip effect, further preventing the product 8 to be tested from rotating in the placement hole 7, and improving the reliability of the product 8 to be tested. In addition, the moving block 26 is slidably arranged in the installation groove, so that the moving block 26 can adapt to products 8 to be tested with different diameters, thereby expanding the scope of application of the anti-slip mechanism.

[0053] Example 5

[0054] On the basis of Example 4, Figure 6 As shown, the connecting mechanism includes an arc-shaped groove 28 arranged inside the moving block 26, and an arc-shaped rod 29 is slidably arranged in the arc-shaped groove 28. One end of the arc-shaped rod 29 is connected to the inner wall of the arc-shaped groove 28 through a connecting spring 30, and the other end of the arc-shaped rod 29 is connected to the outer wall of the rotating disk 27 through a connecting block 31. The connecting block 31 is located at one end of the two rotating disks 27 away from each other.

[0055] The working principle and beneficial effects of the above technical solution are as follows: when the rotating disk 27 rotates, the rotating disk 27 drives the arc rod 29 to slide in the arc groove 28 through the connecting block 31, and the connecting spring 30 is stretched. The two rotating disks 27 on the same moving block 26 respectively fit with the outer wall of the product to be tested 8, thereby fixing the product to be tested 8 in the placement hole 7, which is convenient for detecting the product to be tested 8.

[0056] Example 6

[0057] On the basis of Example 5, Figure 6 As shown, a first rack 32 is provided in the sliding groove, and a semicircular gear meshing with the first rack 32 is provided at the bottom of the rotating disk 27.

[0058] The working principle and beneficial effects of the above technical solution are as follows: when the rotating disk 27 rotates, due to the engagement of the semicircular gear with the first rack 32, the semicircular gear can move along the length direction of the first rack 32, thereby causing the two moving blocks 26 to slide toward each other, and the rotating disk 27 contacts the outer wall of the product 8 being tested more closely, thereby improving the anti-slip effect.

[0059] Example 7

[0060] On the basis of Example 5 or 6, Figure 6 、 Figure 7As shown, two fixed blocks 33 are provided on the side of the rotating disk 27 away from the moving block 26. The two fixed blocks 33 are symmetrically arranged about the central axis of the rotating disk 27. A rotating groove is provided on the side of the fixed block 33 away from the rotating disk 27. A rotating column 34 is rotatably provided in the rotating groove. A first torsion spring is provided between the rotating column 34 and the fixed block 33. One end of the first torsion spring is connected to the rotating column 34, and the other end of the first torsion spring is connected to the inner wall of the rotating groove. A groove 35 is provided on the side of the rotating column 34 away from the fixed block 33. A mounting cavity 36 connected to the groove 35 is provided in the rotating column 34. A second rack 37 is slidably provided in the mounting cavity 36. One end of the second rack 37 extends to the outside of the mounting cavity 36 and is provided with a contact ball 38. A pressure sensor is provided on the end of the contact ball 38 away from the second rack 37. The pressure sensor is electrically connected to the programmable controller. Connecting gears 39 are symmetrically provided on both sides of the rack 37. The connecting gear 39 is rotatably connected to the inner wall of the mounting cavity 36 through the first rotating shaft. The connecting gear 39 is meshed with the third rack 40 on the side away from the second rack 37. The third rack 40 is parallel to the second rack 37. The third rack 40 is slidably connected to the inner wall of the mounting cavity 36. One end of the third rack 40 extends to the outside of the groove 35 and is connected to one end of the friction belt 41. The friction belt 41 is made of non-slip soft rubber material. Second rotating shafts are symmetrically provided on both sides of the groove 35. The second rotating shaft is rotatably connected to the end of the rotating column 34. A reel 42 is provided outside the second rotating shaft. The end of the friction belt 41 away from the third rack 40 is wound around the outer wall of the reel 42. A second torsion spring is provided at one end of the reel 42. One end of the second torsion spring is connected to the outer wall of the reel 42, and the other end of the second torsion spring is connected to the rotating column 34.

[0061] The working principle and beneficial effects of the above technical solution are as follows: when the rotating disk 27 approaches the outer wall of the product 8 to be measured, due to the provision of the third rack 40, the third rack 40 extends to the outside of the groove 35 of the rotating column 34, so that the third rack 40 first contacts the outer wall of the product 8 to be measured, and then as the push block 25 approaches, the third rack 40 gradually slides into the installation cavity 36, and the third rack 40 drives the connecting gear 39 to rotate, and the rotation of the connecting gear 39 drives the second rack 37 to move in the direction of approaching the product 8 to be measured, and the second rack 37 drives the contact ball 38 to move in the direction of approaching the product 8 to be measured. When the contact ball 38 contacts the product 8 to be measured, the pressure sensor can detect the actual pressure of the contact ball 38 on the outer wall of the product 8 to be measured. When the actual pressure reaches the preset pressure, the programmable The controller controls the electric push rod 24 to stop pushing out, thereby ensuring that the pressure of the contact ball 38 on the product 8 to be tested remains consistent, preventing the product 8 to be tested from rotating in the placement hole 7 while avoiding pinching the product 8 to be tested. When the third rack 40 slides into the installation cavity 36, the third rack 40 can pull the friction belt 41 to move, and the friction belt 41 is released from the reel 42. When the contact ball 38 contacts the outer wall of the product 8 to be tested, under the elastic force of the second torsion spring, the friction belt 41 can fit tightly with the outer wall of the product 8 to be tested, thereby improving the adaptability and making the anti-slip mechanism suitable for products 8 to be tested of different thicknesses. The friction of the friction belt 41 further prevents the product 8 to be tested from rotating, and at the same time, it can avoid indentations on the outer wall of the product 8 to be tested, thereby ensuring the quality of the product 8 to be tested.

[0062] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0063] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0064] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A drug delivery device detection tool, characterized in that: include: A testing box (1) is provided in the testing box (1), a testing table (2) is provided in the testing box (1), a mounting plate (3) is provided vertically on the testing table (2), a support plate (4) is provided on the front side wall of the mounting plate (3), a movable seat (5) is provided on the support plate (4) for sliding, the movable seat (5) is driven by a horizontal cylinder (6), the horizontal cylinder (6) is provided on the front side wall of the mounting plate (3), a placement hole (7) is provided in the movable seat (5), the placement hole (7) is used to place a tested product (8), the tested product (8) is a drug delivery device, a pressing mechanism is provided above the movable seat (5), a rotating mechanism is provided on one side of the pressing mechanism, a through hole corresponding to the placement hole (7) is provided in the support plate (4), a testing mechanism is provided below the through hole, the testing mechanism comprises a vertical cylinder (9), the vertical cylinder (9) is provided on the testing table (2), a linear cylinder (9) is provided on one side of the vertical cylinder (9), A guide rail (10) is provided, and fixed plates are provided at the upper and lower ends of the linear guide rail (10). A slide table (11) is provided on the linear guide rail (10) for sliding. A sliding plate (12) is provided on the side of the slide table (11) away from the vertical cylinder (9). The lower end of the sliding plate (12) is connected to the fixed plate through a compression spring (13). A displacement sensor (14) is provided on the side of the sliding plate (12) away from the slide table (11). A limiting sleeve (15) is provided on the upper end of the sliding plate (12). The probe head of the displacement sensor (14) passes through the limiting sleeve (15) and extends to the upper part of the limiting sleeve (15). The limiting sleeve (15) is located directly below the through hole. A programmable controller is provided in the detection box (1). A display screen is provided outside the detection box (1). The programmable controller is electrically connected to the horizontal cylinder (6), the vertical cylinder (9), the displacement sensor (14) and the display screen respectively.

2. A drug delivery device detection tool according to claim 1, characterized in that: The downward pressing mechanism comprises a transverse plate (16), a downward pressing cylinder (17) and a pressure head (18), wherein the transverse plate (16) is horizontally arranged at the upper end of the mounting plate (3), the downward pressing cylinder (17) is arranged at the front end of the transverse plate (16), the pressure head (18) is arranged at the lower end of the downward pressing cylinder (17), the pressure head (18) is located just above the through hole, and the downward pressing cylinder (17) is electrically connected to the programmable controller.

3. A drug delivery device detection tool according to claim 1, characterized in that: The rotating mechanism comprises a first servo motor (19) arranged on the front side wall of the mounting plate (3); a screw is arranged at the output end of the first servo motor (19); a slider is slidably arranged on the screw; a second servo motor (20) is arranged on the front side wall of the slider; an electric clamp (21) is arranged at the lower end of the second servo motor (20); and the first servo motor (19), the second servo motor (20), and the electric clamp (21) are electrically connected to a programmable controller respectively.

4. A drug delivery device detection tool according to claim 1, characterized in that: A two-hand start button (22) is provided on the upper surface of the front end of the detection platform (2). The two-hand start button (22) is located outside the detection box (1). The two-hand start button (22) is electrically connected to the programmable controller.

5. A drug delivery device detection tool according to claim 1, characterized in that: A plurality of anti-slip mechanisms are arranged at equal intervals along the axial direction of the placement hole (7) in the movable seat (5). The anti-slip mechanisms include two mounting holes (23). The two mounting holes (23) are symmetrically arranged on the left and right sides of the placement hole (7). One end of the mounting hole (23) is connected to the placement hole (7). An electric push rod (24) is arranged in the mounting hole (23). The electric push rod (24) is electrically connected to the programmable controller. One end of the electric push rod (24) is connected to the inner wall of the mounting hole (23). A push block (25) is arranged near one end of the electric push rod (24) near the mounting hole (23). The push block (25) is connected to the inner wall of the mounting hole (23) in a left-right sliding manner.

6. A drug delivery device detection tool according to claim 5, characterized in that: Two mounting grooves are arranged on one side of the push block (25) close to the placement hole (7), and the two mounting grooves are symmetrically arranged front to back. A moving block (26) is arranged in the mounting groove, and the moving block (26) slides back and forth along the mounting groove.

7. A drug delivery device detection tool according to claim 6, characterized in that: The front side wall of the moving block (26) is provided with a sliding groove, and a rotating disk (27) is provided in the sliding groove. The rotating disk (27) is rotatably connected with the moving block (26) through a connecting mechanism, and the rotating disk (27) is semicircular.

8. A drug delivery device detection tool according to claim 7, characterized in that: The rotating disk (27) is made of elastic anti-skid material.

9. A drug delivery device detection tool according to claim 7, characterized in that: The connecting mechanism comprises an arcuate groove (28) arranged inside the moving block (26), an arcuate rod (29) slidingly arranged in the arcuate groove (28), one end of the arcuate rod (29) being connected to the inner wall of the arcuate groove (28) via a connecting spring (30), and the other end of the arcuate rod (29) being connected to the outer wall of the rotating disk (27) via a connecting block (31), and the connecting block (31) being located at one end of the two rotating disks (27) away from each other.

10. A drug delivery device detection method, using a drug delivery device detection tool according to any one of claims 1 to 9 for detection, characterized in that: The following steps are involved: Step 1: The product (8) to be tested is placed in the placement hole (7) of the movable seat (5). The product (8) to be tested is fixed on the movable seat (5). Then, the pressing mechanism presses down the knob of the product (8) to the initial position. The actual position of the lower end of the internal push rod of the product (8) to be tested is detected by the displacement sensor (14) and recorded. Step 2: The pressing mechanism is reset, and the horizontal cylinder (6) moves the movable seat (5) to the bottom of the rotating mechanism. The knob of the product under test (8) is rotated to a preset angle by the rotating mechanism, and then the movable seat (5) is moved to the bottom of the pressing mechanism. The pressing mechanism presses down the knob of the product under test (8) until the knob returns to the initial position. The actual displacement of the lower end of the push rod of the product under test (8) is detected by the displacement sensor (14) and recorded. Step 3: Repeat step 2 to perform multiple tests on the tested product (8), and compare the actual displacement of the lower end of the push rod of the tested product (8) with the preset displacement range. When the actual displacement is within the preset displacement range, the tested product (8) is judged to be qualified.

Images