Visual inspection system for safety needle tension detection

Abstract

The invention belongs to the technical field of safety needle detection, and relates to a visual detection system for safety needle tension detection, which comprises a visual detection device and a clamping and positioning device, the visual detection device comprises a visual detection support seat, a visual detection display and a visual detection lens, the visual detection display and the visual detection lens are connected through a signal, the visual detection display is installed on the visual detection supporting seat, the visual detection lens is installed on the visual detection supporting seat in a sliding mode, and the clamping and positioning device is arranged below the visual detection lens. The clamping and positioning device is used for clamping and fixing the safety needle to be detected. The visual inspection system can automatically detect the safety needle located on the clamping and positioning device and judge whether the outer sliding sleeve, the inner sliding sleeve and the needle sheath of the safety needle are reset to the initial state or not, so that the quality of outgoing products is guaranteed, and the reliability of the products and the satisfaction degree of users are improved.

Description

Technical Field

[0001] The invention relates to a visual detection system for safety needle tension detection, belonging to the technical field of safety needle detection. Background Art

[0002] After using injection needles, blood collection needles, dispensing needles, flushing needles and other medical needles, most people will just throw them away. Since traditional injection needles, blood collection needles, dispensing needles, flushing needles and other medical needles do not have safety protection devices, when cleaning up waste and recycling, workers are often injured by needle sticks, and there is also a risk of cross infection. For this reason, professionals have designed a variety of safety needles that can hide the needles after use to prevent harm to the human body. The sliding sleeve protection safety needle is one of them that is very convenient to operate.

[0003] The so-called sliding sleeve protection safety needle Z00 is as follows Fig.18 - Fig. 20 As shown, it includes a needle handle Z01 and a needle Z14 inserted in the needle handle Z01. The needle handle Z01 connects the needle Z14 with one end of the catheter Z12. The needle handle Z01 is provided with a wing Z04. The other end of the catheter Z12 is connected to the needle holder Z13. It also includes an inner sliding sleeve Z05, an outer sliding sleeve Z09 and a needle shield Z11 sleeved on the needle handle Z01. The factory state of the safety needle Z00 is that the outer sliding sleeve Z09 and the inner sliding sleeve Z05 are sleeved on the root of the needle handle Z01 in sequence, and the needle shield Z11 is sleeved on the head of the needle handle Z01 and protects the needle Z14. When in use, the medical staff removes the shield and can use it like an ordinary needle. Before discarding after use, the medical staff only needs to gently pull the outer sliding sleeve Z09 to make the outer sliding sleeve Z09 and the inner sliding sleeve Z05 unfold in sequence to protect the needle Z14. In this way, the needle Z14 will not injure the staff during the garbage transfer and processing, so it is called the safety needle Z00.

[0004] In order to prevent the inner sleeve Z05 and the outer sleeve Z09 from sliding randomly and affecting normal use, or from retracting under external force after being pulled apart and exposing the needle Z14 when discarded, a locking mechanism needs to be provided on the needle handle Z01, the inner sleeve Z05 and the outer sleeve Z09, and the locking mechanism includes a first card slot Z02 provided at the rear of the needle handle Z01, a second card slot Z03 provided at the front of the needle handle Z01, a first buckle Z06 provided at the rear of the inner sleeve Z05, a third card slot Z07 provided at the rear of the inner sleeve Z05, a fourth card slot Z08 provided at the front of the inner sleeve Z05, and a second buckle Z10 provided at the rear of the outer sleeve Z09. In the factory state, the first card slot Z02 and the first buckle Z06, and the third card slot Z07 and the second buckle Z10 are mutually engaged and in a locked state, which will not affect normal operation. When it is necessary to discard and pull it apart, the first buckle Z06 and the second slot Z03, the second buckle Z10 and the fourth slot Z08 are respectively engaged in a locked state and will not retract.

[0005] Since the inner sleeve, outer sleeve and needle handle are generally made of plastic, their slots and buckles cannot guarantee precise fit, and the safety needle needs to be connected to adjacent parts by gluing on the production line. In the factory state, the inner sleeve, outer sleeve and needle handle may be too tight, making it difficult for medical staff to pull the sleeve, which does not meet the environmental protection requirements for discarding safety needles. Therefore, it is very important to control the sleeve tension of each safety needle within the standard requirements, and whether it meets the requirements requires the safety needle to be pulled out.

[0006] At present, this inspection work can only rely on manual pulling and sampling, which has the following shortcomings: first, the efficiency is too low and cannot be fully tested; second, the force is based on feeling without accurate standards; third, the stroke is not well controlled. Once it is pulled to the locked state when it is discarded, the safety needle is scrapped as a whole and cannot be restored. As a disposable consumable, the safety needle is used in large quantities, so efficient and accurate automated safety needle tension testing equipment is needed to replace manual sampling.

[0007] For the automated inspection process, first, the outer sleeve is pulled by the outer sleeve tension device to measure the force required to pull the outer sleeve; then, after the needle sheath is pulled out a certain distance, the inner sleeve is pulled by the inner sleeve tension device to measure the force required to pull the inner sleeve. After the inspection is completed, the inner sleeve, sheath and outer sleeve are reset using a pressing device before the product can be shipped out of the factory. However, how to ensure that the safety needles that have undergone tension testing can all be reset to their initial state, thereby ensuring the quality of the products shipped out of the factory, has become a key issue. For this reason, a visual inspection system for safety needle tension testing is required.

[0008] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present inventive concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0009] The purpose of the present invention is to provide a new technical solution to improve or solve the technical problems existing in the prior art as described above.

[0010] The technical solution provided by the present invention is as follows: A visual inspection system for safety needle tension detection, comprising a visual inspection device and a clamping and positioning device, the visual inspection device comprising a visual inspection support seat, a visual inspection display and a visual inspection lens, the visual inspection display and the visual inspection lens are connected through a signal, the visual inspection display is mounted on the visual inspection support seat, the visual inspection lens is slidably mounted on the visual inspection support seat, the clamping and positioning device is arranged below the visual inspection lens, and the clamping and positioning device is used to clamp and fix the safety needle to be inspected.

[0011] The technical solution provided by the present invention has the following beneficial effects compared with the prior art: the visual inspection device of the present invention is located on the visual inspection station of the safety needle tension detection system, and the clamping and positioning device will pass through multiple stations in sequence according to a predetermined process. After the safety needle completes a series of operations and is pressed and reset, the clamping and positioning device will move the safety needle to be inspected to the visual inspection station. The visual inspection system of the present invention can automatically detect the safety needle located on the clamping and positioning device, and determine whether its outer sliding sleeve, inner sliding sleeve and needle shield are reset to the initial state, thereby ensuring the quality of the products leaving the factory and improving the reliability of the products and user satisfaction.

[0012] Based on the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the visual inspection device also includes a lens holder, a head of the lens holder is provided with a lifting adjustment plate, the visual inspection lens is mounted on the lifting adjustment plate in a lifting and adjusting manner, and the lens holder is slidably mounted on the visual inspection support seat.

[0014] The beneficial effect of adopting the above further solution is that by adjusting the height of the visual inspection lens through the lifting adjustment plate, it is possible to ensure that a suitable detection distance is maintained between the lens and the safety needle to be inspected, thereby greatly improving the accuracy of the inspection.

[0015] Furthermore, the visual inspection device also includes a sliding module, and the lens bracket is installed on the visual inspection support seat through the sliding module.

[0016] Furthermore, the sliding module includes a driving motor, a synchronous toothed belt, an upper flat pressure plate, a lower flat pressure plate, a driving pulley and a driven pulley, the driving pulley is installed on the driving shaft of the driving motor, the driven pulley is rotatably installed on the visual detection support seat, the synchronous toothed belt surrounds the driving pulley and the driven pulley, a sliding seat is provided at the bottom of the lens holder, the upper flat pressure plate and the lower flat pressure plate are fixed on the sliding seat, and the upper flat pressure plate and the lower flat pressure plate are respectively crimped on the upper and lower sides of the synchronous toothed belt.

[0017] The beneficial effect of adopting the above further solution is that the driving motor drives the active pulley, which in turn drives the synchronous toothed belt and the driven pulley to rotate, thereby achieving smooth sliding of the lens bracket.

[0018] Furthermore, a slide rail is provided on the visual detection support seat, a sliding block cooperating with the slide rail is provided at the bottom of the slide seat, and the slide seat is installed on the slide rail through the sliding block.

[0019] The beneficial effect of adopting the above further solution is that the design of the slide rail enables the slide seat to accurately stay at a predetermined position, thereby improving the positioning accuracy of the visual inspection lens.

[0020] Furthermore, sensors are provided at both ends of the visual detection support seat for detecting whether the visual detection lens moves to a predetermined position.

[0021] The beneficial effect of adopting the above further solution is that the sensor can monitor the position of the lens holder to ensure that it is always in the correct position during the detection process.

[0022] Furthermore, the visual detection device also includes a light source, and the light source is arranged close to the visual detection lens.

[0023] The beneficial effect of adopting the above further solution is that the addition of the light source enables the visual inspection lens to capture clearer and more accurate image information, thereby improving the inspection effect.

[0024] Further, the clamping and positioning device includes a positioning frame and a fixed assembly arranged on the positioning frame, the positioning frame is provided with a positioning structure for positioning the safety needle, and the fixed assembly can press the safety needle; the fixed assembly includes an assembly support part and a fixed pressure block arranged on the assembly support part and capable of acting on the safety needle, the fixed pressure block has an original position and a pressing position, the fixed pressure block in the original position can be moved to the top of the corresponding pressing position by moving in the front-back and left-right directions, and then moved to the pressing position by moving in the up-down direction to press the safety needle; the fixed pressure block in the pressing position can be moved out of the pressing position by moving in the up-down direction to release the safety needle, and then return to the original position by moving in the front-back and left-right directions.

[0025] The beneficial effect of adopting the above further scheme is that the clamping and positioning device of the present invention has a simple and compact structure and is easy to operate. It can avoid interfering with the placement and removal of the safety needle during loading and unloading, and can press the safety needle to prevent it from moving, so as to prepare for the automated tension test. The pressing and loosening of the safety needle will not damage the safety needle, thus ensuring the quality of the automated tension test of the safety needle. When performing tension test on the safety needle, it is necessary to press the safety needle to pull the outer sleeve or the inner sleeve. The clamping and positioning device is designed with a fixed assembly, which can press the safety needle placed on the positioning frame and ensure that the pressing of the safety needle does not hinder the placement and removal of the safety needle on the positioning frame. For this purpose, the fixed pressure block is set with an original position and a pressing position. When the fixed pressure block is in the original position, the safety needle can be placed on the positioning frame to wait for the tension test, or the safety needle can be removed after the tension test. The fixed pressure block will not interfere with the placement and removal of the safety needle; when the fixed pressure block is in the pressing position, it can press the safety needle to prevent the safety needle from being removed. The whole needle is convenient for the tension detection of the safety needle; in order to ensure the clamping effect of the fixed pressure block on the safety needle, the action of the fixed pressure block to the clamping position is also improved, the fixed pressure block in the original position first moves in the front and back directions, left and right directions, and then moves in the up and down directions to descend to the clamping position to clamp the safety needle; the action of the fixed pressure block returning to the original position is also limited, the fixed pressure block in the clamping position first moves in the up and down directions, that is, rises to separate from the safety needle, and then moves in the front and back directions, left and right directions to return to the original position, to avoid forced movement in the front and back or left and right directions to damage the safety needle.

[0026] Furthermore, the positioning structure includes a wing bracket for positioning the wing of the safety needle and a sheath notch for positioning the needle sheath of the safety needle.

[0027] The beneficial effect of adopting the above further scheme is that the wing bracket can support the wing of the safety needle and the needle handle around the wing, the wing bracket can cooperate with the fixing assembly to achieve stable positioning of the safety needle, and the sheath slot can support and position the needle sheath of the safety needle to meet the needs of visual inspection of the safety needle.

[0028] Furthermore, the assembly support part includes a fixed frame, a fixed slide, a fixed bar, a movable track plate and a fixed track plate, the fixed frame is arranged on the positioning frame for sliding up and down, the fixed slide is arranged on the fixed frame for sliding forward and backward, the fixed bar is arranged on the fixed slide for sliding left and right, the fixed pressure block is arranged on the fixed bar, the fixed track plate is arranged on the fixed frame, and the movable track plate is arranged on the fixed slide for sliding up and down; a first linkage is provided between the movable track plate and the fixed bar, a second linkage is provided between the movable track plate and the fixed track plate, and a limit pin assembly that can be locked and unlocked with the movable track plate is also provided on the fixed slide.

[0029] The beneficial effect of adopting the above further scheme is that the fixed pressure block is arranged on the fixed bar, the fixed bar is arranged to slide left and right on the fixed slide, the movable track plate is arranged to slide up and down on the fixed slide, the fixed slide is arranged to slide forward and backward on the fixed frame, the fixed track plate is arranged on the fixed frame, and the fixed frame is arranged to slide up and down on the positioning frame. In order to realize the movement of the fixed pressure block between the original position and the pressing position, the relative relationship between the above-mentioned various components in the fixed assembly is set to meet the demand for the fixed pressure block to change between the original position and the pressing position. When the fixed pressure block moves to the pressing position, the movable track plate is powered Under the action of the drive, it moves downward, and the fixed bar drives the fixed pressure block to move right under the action of the first linkage. Since the fixed frame is set on the positioning frame for sliding up and down, the fixed frame will not move in the front and back directions. Therefore, under the action of the second linkage, the movable track plate will move forward. Since the movable track plate is set on the fixed slide for sliding up and down, the fixed slide will carry the fixed bar and the fixed pressure block forward. When the movable track plate moves to the limit position where the movable track plate cannot move forward under the action of the second linkage, the movable track plate will no longer move forward due to the influence of the fixed track plate, and the fixed pressure block can move right and forward to the clamping position. When the movable track plate moves downward again, it will drive the fixed track plate to move downward. Since the fixed track plate is installed on the fixed frame, and the fixed frame is set on the positioning frame for sliding up and down, the fixed frame moves downward, and the fixed pressure block moves downward to the pressing position to press the safety pin; when the fixed pressure block is in the pressing position, the limit pin assembly is locked and matched with the movable track plate; after the tension test is completed, the fixed pressure block needs to return to the original position, and the movable track plate moves upward under the action of power drive, and the fixed slide plate is driven to move upward due to the locking and matching relationship between the limit pin assembly and the movable track plate, and the fixed slide plate is set on the fixed frame for sliding back and forth, so the fixed The fixed frame moves upward, the fixed pressure block rises to above the clamping position and disengages from the safety needle, the movable track plate continues to move upward, the lock of the limit pin assembly and the movable track plate is released, and the movable track plate after release drives the fixed bar to move left under the action of the first linkage member, and under the action of the second linkage member, and the fixed track plate is set on the fixed frame, the fixed frame can only slide up and down, so the movable track plate moves backward, thereby driving the fixed slide plate, the fixed bar and the fixed pressure block on the fixed bar to move backward, and the fixed pressure block can be reset by moving left and backward, and then the safety needle that has completed the inspection can be discharged, and the safety needle to be inspected can be loaded onto the positioning frame and wait for inspection.

[0030] Furthermore, the positioning structure also includes a tube positioning notch for positioning the catheter of the safety needle. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0032] Figure 1 is a schematic diagram of the three-dimensional structure of the visual inspection system of the present invention from a first viewing angle;

[0033] Figure 2 is a schematic diagram of a three-dimensional structure of a visual inspection system of the present invention from a second viewing angle;

[0034] Figure 3 It is a structural schematic diagram of the visual inspection device of the present invention (without the inspection camera);

[0035] Figure 4 It is a structural schematic diagram of the safety needle of the present invention in a placed state on the clamping and positioning device;

[0036] Figure 5 It is a top view schematic diagram of the safety needle of the present invention being placed on the clamping and positioning device;

[0037] Figure 6 It is a schematic diagram of the three-dimensional structure of the clamping and positioning device of the present invention when viewed from above;

[0038] Figure 7 It is a three-dimensional structural schematic diagram of the safety needle of the present invention in a positioning state on the clamping and positioning device;

[0039] Figure 8 It is a top view schematic diagram of the safety needle of the present invention in a positioning state on the clamping and positioning device;

[0040] Fig. 9 It is a three-dimensional structural schematic diagram of the safety needle of the present invention in a positioning state on the clamping and positioning device;

[0041] Fig.10 It is a structural schematic diagram of a fixed pressing block of a fixed assembly of a clamping and positioning device of the present invention in an original position;

[0042] Fig.11 It is a structural schematic diagram of the matching state of the limit pin assembly and the movable track plate when the clamping and positioning device of the present invention is in the original position;

[0043] Fig.12 It is a schematic diagram of the structure of the overhead and latch of the clamping and positioning device of the present invention;

[0044] Fig.13 It is a schematic structural diagram of a fixed pressing block of a fixed assembly of a clamping and positioning device of the present invention in a clamping position;

[0045] Fig.14 It is a structural schematic diagram of the matching state between the limit pin assembly and the movable track plate when the clamping and positioning device of the present invention is in the pressing position;

[0046] Fig.15 It is a structural schematic diagram of the clamping and transferring assembly of the clamping and positioning device sheath of the present invention in the state of clamping the needle sheath at angle one;

[0047] Fig.16 It is a structural schematic diagram of the second angle of the clamping and transferring assembly of the clamping and positioning device for the present invention for clamping the needle sheath;

[0048] Fig.17 It is a structural schematic diagram of the shield transfer assembly of the clamping and positioning device of the present invention in a state where the needle shield is released;

[0049] Fig.18 is a schematic diagram of the structure of a safety needle;

[0050] Fig.19 This is a schematic diagram of the structure of the safety needle when the outer sleeve is pulled out;

[0051] Fig. 20 It is a schematic diagram of the split structure of the safety needle;

[0052] In the figure, 500, visual inspection device; 510, visual inspection support seat; 520, visual inspection display; 530, visual inspection lens; 540, lens bracket; 541, lifting adjustment plate; 542, slide seat; 550, sliding module; 551, driving motor; 552, synchronous toothed belt; 554, driving pulley; 555, driven pulley; 560, sensor; 570, light source;

[0053] 100, positioning rack; 101, fixed pressure block; 102, fixed frame; 103, fixed slide plate; 104, fixed bar; 105, movable track plate; 106, fixed track plate; 107, pin rack; 108, overhead; 109, latch; 110, pin slot; 111, latch spring; 112, overhead spring; 113, pin lever; 114, pin limiting ring; 115, pin slot; 116, first oblique slot hole; 117, second oblique slot hole; 118, first limiting column; 119, second limiting column; 120, sheath claw frame; 121, sheath clamping claw; 122, clamping claw spring; 123, top block support plate; 124, top block; 125, driving top plate; 126, connecting column; 127, wing bracket; 128, sheath notch; 129, tube positioning notch; 130, front baffle; 131, double-wing baffle; 132, shift fork; 133, main shaft; 134, first shift notch; 135, second shift notch; 136, driving block; 137, limiting plate;

[0054] Z00, safety needle; Z01, needle handle; Z02, first slot; Z03, second slot; Z04, wing; Z05, inner sleeve; Z06, first buckle; Z07, third slot; Z08, fourth slot; Z09, outer sleeve; Z10, second buckle; Z11, needle sheath; Z12, catheter; Z13, needle holder; Z14, needle. DETAILED DESCRIPTION

[0055] The serial numbers assigned to the components herein, such as "first" and "second", are only used to distinguish the objects described and do not imply any priority in order or specific technical meaning. In addition, the concepts of "connection" and "coupling" mentioned in this application, unless otherwise specified, are deemed to include both direct connection (coupling) and indirect connection (coupling).

[0056] When interpreting the description of this application, it is necessary to clarify that the terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., which indicate positions or positional relationships, are based on the perspectives and layouts shown in the drawings, and are intended to facilitate explanation and simplify the description process, rather than being absolute limitations on the actual positions, construction methods, and operating modes of the devices or components. Therefore, these terms should not be understood as restrictive interpretations of the content of this application.

[0057] The principles and features of the present invention are described below in conjunction with examples. The examples are only used to explain the present invention and are not used to limit the scope of the present invention.

[0058] A visual inspection system for safety needle tension detection includes a visual inspection device 500 and a clamping and positioning device:

[0059] like Figure 1 - Figure 3 As shown, the visual detection device 500 includes a visual detection support seat 510, a visual detection display 520 and a visual detection lens 530, the visual detection display 520 and the visual detection lens 530 are connected through signals, the visual detection display 520 is installed on the visual detection support seat 510, the visual detection lens 530 is slidably installed on the visual detection support seat 510, and the clamping and positioning device is arranged below the visual detection lens 530, and the clamping and positioning device is used to clamp and fix the safety needle to be detected.

[0060] The visual inspection device 500 also includes a lens holder 540 , a lifting adjustment plate 541 is provided at the head of the lens holder 540 , the visual inspection lens 530 is mounted on the lifting adjustment plate 541 in a lifting and adjusting manner, and the lens holder 540 is slidably mounted on the visual inspection support seat 510 .

[0061] The visual inspection device 500 further includes a sliding module 550, through which the lens holder 540 is mounted on the visual inspection support seat 510. The sliding module 550 includes a driving motor 551, a synchronous toothed belt 552, an upper flat plate, a lower flat plate, a driving pulley 554 and a driven pulley 555, wherein the driving pulley 554 is mounted on the driving shaft of the driving motor 551, and the driven pulley 555 is rotatably mounted on the visual inspection support seat 510, the synchronous toothed belt 552 surrounds the driving pulley 554 and the driven pulley 555, a sliding seat 542 is provided at the bottom of the lens holder 540, the upper flat plate and the lower flat plate are fixed on the sliding seat 542, and the upper flat plate and the lower flat plate are respectively pressed on the upper and lower sides of the synchronous toothed belt 552. The visual inspection support seat 510 is also provided with a slide rail, and a sliding block that cooperates with the slide rail is provided at the bottom of the slide seat 542, and the slide seat 542 is installed on the slide rail through the sliding block.

[0062] Sensors 560 are also provided at both ends of the visual inspection support seat 510 for detecting whether the visual inspection lens 530 moves to a predetermined position.

[0063] The visual inspection device 500 further includes a light source 570, and the light source 570 is disposed close to the visual inspection lens 530. In this embodiment, the light source 570 is an annular light source 570, and the annular light source 570 is installed below the visual inspection lens 530 through the light sources 570.

[0064] In the safety needle tension detection system, the clamping and positioning device can flexibly work with the corresponding detection equipment at multiple stations. It sequentially performs a series of functions such as outer sleeve tension detection, inner sleeve tension detection, pressing and resetting operation, visual detection, and sealing detection of the safety needle. Therefore, the clamping and positioning device has a structure and function that matches multiple detection stations and smoothly performs corresponding detection tasks.

[0065] like Figure 4 - Fig.17As shown, the clamping and positioning device includes a positioning frame 100 and a fixed assembly arranged on the positioning frame 100, and the positioning frame 100 is provided with a positioning structure for positioning the safety needle Z00, and the fixed assembly can be used to compress the safety needle Z00 during tension detection; the fixed assembly includes an assembly support portion and a fixed pressing block 101 arranged on the assembly support portion and capable of acting on the needle handle Z01 and / or wing Z04 of the safety needle Z00, the fixed pressing block 101 has an original position and a pressing position, the fixed pressing block 101 in the original position can be moved to the upper side corresponding to the pressing position by moving in the front-back and left-right directions, and then moved to the pressing position by moving in the up-down direction to compress the needle handle Z01 and / or wing Z04 of the safety needle Z00; the fixed pressing block 101 in the pressing position can be moved out of the pressing position by an up-down action to release the safety needle Z00, and then returned to the original position by moving in the front-back and left-right directions.

[0066] The assembly support portion includes a fixed frame 102, a fixed slide 103, a fixed bar 104, a movable track plate 105 and a fixed track plate 106, the fixed frame 102 is arranged on the positioning frame 100 to slide up and down through a first slide rail, the fixed slide 103 is arranged on the fixed frame 102 to slide forward and backward through a guide column, the fixed bar 104 is arranged on the fixed slide 103 to slide left and right through a second slide rail, the fixed pressure block 101 is arranged on the fixed bar 104, the fixed track plate 106 is arranged on the fixed frame 102, and the movable track plate 105 is arranged on the fixed slide 103 to slide up and down through a third slide rail; a first linkage is provided between the movable track plate 105 and the fixed bar 104, a second linkage is provided between the movable track plate 105 and the fixed track plate 106, and a limit pin assembly that can be locked and unlocked with the movable track plate 105 is also provided on the fixed slide 103.

[0067] The fixed pressing block 101 moves from the original position to the clamping position, the movable track plate 105 moves downward, and under the action of the first linkage, the fixed bar 104 moves to the right, and under the action of the second linkage, the movable track plate 105 carries the fixed slide plate 103 forward. When the second linkage moves into place, the fixed pressing block 101 moves right and forward to the top of the clamping position. As the movable track plate 105 continues to move downward, the fixed track plate 106 moves downward to drive the fixed frame 102 to move downward, and the fixed pressing block 101 moves downward to the clamping position to clamp the safety needle Z00. After the fixed pressing block clamps the safety needle, the safety needle can be tested for tension. When in the clamping position, the limit pin assembly is locked with the movable track plate 105.

[0068] The fixed pressing block 101 returns to the original position from the pressing position, the movable track plate 105 moves up, and under the action of the limit pin assembly, the fixed slide plate 103 and the fixed frame 102 move up, and the fixed pressing block 101 releases the safety needle Z00 and moves up. As the movable track plate 105 continues to move up, the limit pin assembly and the movable track plate 105 are unlocked, and under the action of the first linkage, the fixed bar 104 moves to the left, and under the action of the second linkage, the movable track plate 105 moves backward with the fixed slide plate 103, and the fixed pressing block 101 moves left and back to the original position. After the fixed pressing block 101 returns to the original position, the safety needle after detection can be removed, and the safety needle to be detected can be loaded.

[0069] The limit pin assembly includes a pin rack 107, an overhead 108 and a latch 109 movably arranged on the pin rack 107, the pin rack 107 is arranged on the fixed slide 103, the movable track plate 105 is provided with a pin slot 110, a latch spring 111 is arranged between the latch 109 and the fixed slide 103, under the action of the latch spring 111, the free end of the latch 109 can act on the side of the movable track plate 105 or be inserted into the pin slot 110, the latch 109 is provided with a pin lever 113, the lower part of the overhead 108 is provided with a The pin push rod 113 cooperates with the pin push groove 115, the upper part of the overhead 108 is provided with a pin limit ring 114, and the overhead 108 between the pin limit ring 114 and the pin frame 107 is provided with an overhead spring 112. The positioning frame 100 is provided with a limit plate 137 that can limit the pin limit ring 114. The limit plate 137 can be made of a light-absorbing plate material, which can enhance the light and dark contrast between the safety needle placed above it and the limit plate 137, thereby improving the image contrast of the visual detection, making the captured safety needle image more vivid and prominent, so as to increase the success rate of the detection. When the fixed pressure block 101 is in the clamping position, the pin 109 is inserted into the pin slot 110. When the fixed pressure block 101 needs to return to the original position from the clamping position, the limit pin assembly can ensure that the fixed pressure block 101 is first raised and then moves in the left and right and front and back directions, avoiding direct movement in the left and right and front and back directions to damage the safety needle.

[0070] The pin frame 107 is provided with a pin hole, which is a stepped hole. The pin 109 is provided with a pin retaining ring, which cooperates with the shoulder of the stepped hole to limit the extension of the pin 109. The pin spring 111 is sleeved on the pin 109, one end of the pin spring 111 acts on the pin retaining ring, and the other end acts on the fixed slide 103. Under the action of the pin spring 111, the pin 109 can act on the side of the movable track plate 105, or extend into the pin slot 110 of the movable track plate 105. The shoulder can limit the pin retaining ring to prevent the pin 109 from being excessively extended under the action of the pin spring 111.

[0071] The first linkage member includes a first oblique slot hole 116 and a first limiting column 118 that can move in the first oblique slot hole 116. The first oblique slot hole 116 is arranged at the upper part of the movable track plate 105, and the first limiting column 118 is arranged on the fixed bar 104. The first oblique slot hole 116 is inclined rightward from bottom to top, and the first limiting column 118 can move in the first oblique slot hole 116. The first oblique slot hole 116 cooperates with the first limiting column 118. When the movable track plate 105 moves in the up-down direction, the fixed bar 104 carrying the fixed pressure block 101 can move in the left-right direction, so as to realize the power transmission from the up-down movement of the movable track plate 105 to the left-right movement of the fixed pressure block 101.

[0072] The second linkage member includes a second oblique slot hole 117 and a second limiting column 119 that can move in the second oblique slot hole 117, wherein the second oblique slot hole 117 is arranged on the fixed track plate 106, and the second limiting column 119 is arranged at the lower part of the movable track plate 105. The second oblique slot hole is inclined backward from bottom to top, and the plane where the fixed track plate 106 is located is perpendicular to the plane where the movable track plate 105 is located. The second limiting column 119 can move in the second oblique slot hole 117, and the second limiting column 119 cooperates with the second oblique slot hole 117. When the movable track plate 105 moves in the up and down directions, the movable track plate 105 can drive the fixed slide plate 103 to move in the front and back directions. In addition, when the second limiting column 119 reaches the front limit position of the second oblique slot hole 117, as the movable track plate 105 continues to move downward, it can also drive the fixed track plate 106 and the fixed frame 102 to move downward.

[0073] It also includes a shield transfer assembly that is slidably disposed on the positioning frame 100, and the shield transfer assembly can be used to clamp and transfer the needle shield Z11 of the safety needle Z00. The clamping and positioning device can not only compress the safety needle Z00 through the fixing assembly during the tension test, and prepare for positioning the safety needle for the tension test of the outer sleeve Z09 and the inner sleeve Z05 of the safety needle Z00, but also can use the shield transfer assembly to clamp the needle shield Z11 and move it forward a certain distance when the tension test is performed on the inner sleeve Z05, so as to avoid the needle shield Z11 interfering with the tension test of the inner sleeve Z05.

[0074] It also includes a fork mechanism, which includes a fork 132, which is rotatably arranged on the positioning frame 100 through a main shaft 133, and a first shifting notch 134 for driving the fixing assembly to press the safety needle Z00 is provided on one end of the fork 132, and a second shifting notch 135 for driving the sheath transfer assembly to clamp the needle sheath Z11 of the safety needle Z00 is provided on the other end of the fork 132. The fork 132 can be arranged on the main shaft 133, and the main shaft 133 is connected to the positioning frame 100 through a bearing or a sleeve. The first shifting slot 134 can cooperate with the movable track plate 105 of the fixed assembly, such as a track plate shifting shaft that cooperates with the first shifting slot 134 can be set on the movable track plate 105. When the first shifting slot 134 swings upward or downward, it can drive the movable track plate 105 of the fixed assembly to move up or down, thereby achieving the purpose of releasing the safety needle Z00 or tightening the safety needle Z00 of the fixed assembly; the second shifting slot 135 can cooperate with the sheath transfer assembly, such as driving the top plate 125 to cooperate with the second shifting slot 135. When the second shifting slot 135 swings downward or upward, the sheath transfer assembly can release the needle sheath Z11 or hold the needle sheath Z11; and the sliding sheath transfer assembly can slide back and forth relative to the positioning frame 100, and can move back and forth after holding the needle sheath Z11, so that the forward movement of the needle sheath Z11 does not interfere with the inner sleeve tension detection and is prepared for the backward movement and reset. The design of the fork mechanism can use a power to act on the sheath transfer assembly and the fixed assembly to simultaneously meet the needs of the fixed assembly to compress the needle handle Z01 and / or wing Z04 of the safety needle Z00 and the sheath transfer assembly to clamp and transfer the needle sheath Z11 of the safety needle Z00, thereby reducing the number of driving components, lowering costs, and facilitating the rotation of the clamping and positioning device between various workstations, thereby reducing the energy consumption of the rotation drive.

[0075] The sheath transfer assembly includes a sheath claw frame 120, a sheath transfer drive mechanism for driving the sheath claw frame 120 to move forward and backward, a sheath clamping unit arranged on the sheath claw frame 120, and a sheath clamping drive mechanism for driving the sheath clamping unit to open and close. The sheath claw frame 120 is arranged on the positioning frame 100 for sliding forward and backward through a guide rod. The sheath clamping unit clamps or releases the needle sheath Z11 under the action of the sheath clamping drive mechanism. The sheath claw frame 120 can drive the needle sheath Z11 to move forward or backward under the action of the sheath transfer drive mechanism.

[0076] The shield transfer drive mechanism includes a drive block 136 disposed on the shield claw frame 120. The shield claw frame 120 is moved forward and backward by driving the drive block 136 to move forward and backward. The forward and backward movement of the drive block 136 can be realized by transferring the driving cylinder, so that the shield clamping unit clamps the needle shield Z11 and drives the needle shield Z11 to move forward and backward.

[0077] The sheath clamping unit includes a pair of sheath clamping claws 121 located on both sides of the needle sheath Z11, the middle parts of the sheath clamping claws 121 are hinged on the sheath claw frame 120, and a clamping claw spring 122 is also provided between the upper parts of the pair of sheath clamping claws 121; the sheath clamping drive mechanism includes a top block supporting plate 123 and a top block 124 arranged on the top block supporting plate 123, the top block 124 is correspondingly arranged below the sheath clamping unit, and a support head is provided on the top block 124; the top block 124 can move upward to open the lower parts of the pair of sheath clamping claws 121 through the support head, and the upper parts of the sheath clamping claws 121 are closed to clamp the needle sheath Z11. The upper part of the sheath clamping jaws 121 is the clamping position. Under the action of the clamping jaw spring 122, the upper part of the pair of sheath clamping jaws 121 is open and will not interfere with the placement of the safety needle Z00. After the safety needle Z00 is placed, the support head of the sheath clamping drive mechanism moves up to act on the lower part of the pair of sheath clamping jaws 121, so that the lower part of the pair of sheath clamping jaws 121 is separated, and the upper part of the sheath clamping jaws 121 can clamp the needle sheath Z11.

[0078] The shield clamping drive mechanism includes a driving top plate 125, and the driving top plate 125 is connected to one end of a connecting column 126, and the other end of the connecting column 126 passes through the shield claw frame 120 and is connected to the top block supporting plate 123. The drive for clamping the needle shield Z11 can act on the driving top plate 125. When the driving top plate 125 is driven by power to move upward, the driving top plate 125 will drive the top block supporting plate 123 to move upward, thereby realizing the upward drive of the top block 124; when the needle shield Z11 needs to be released, the power drive moves away from the driving top plate 125, and the driving top plate 125 moves downward to drive the top block 124 to move downward away from the pair of shield clamping claws 121, and the upper part of the pair of shield clamping claws 121 is restored to the open state.

[0079] The positioning structure includes a wing bracket 127 for positioning the wing Z04 of the safety needle Z00 and a sheath notch 128 for positioning the needle sheath Z11 of the safety needle Z00. The wing bracket 127 can support the wing Z04 of the safety needle Z00 and the needle handle Z01 around the wing Z04. When the fixed pressing block 101 of the fixed assembly acts on the needle handle Z01 and / or the wing Z04 to press the safety needle Z00, the wing bracket 127 can cooperate with the fixed pressing block 101 to achieve stable positioning of the safety needle Z00, and the sheath notch 128 can support and position the needle sheath Z11 of the safety needle Z00, and can also ensure the accuracy of the clamping of the sheath clamp 121, meeting the requirements of the tension detection of the safety needle Z00.

[0080] The positioning structure also includes a tube positioning notch 129 for positioning the catheter Z12 of the safety needle Z00. The catheter is a hose, and the tube positioning notch 129 can position the catheter Z12 of the safety needle Z00 to prevent the catheter Z12 from interfering with the tension detection of the safety needle Z00. The positioning structure has multiple safety needles Z00 on the positioning frame 100, which can ensure that the safety needles Z00 are placed neatly, and the neat positioning of each safety needle Z00 will not interfere with each other, further improving the efficiency and quality of the tension detection of the safety needle Z00.

[0081] The positioning frame 100 also includes a front baffle 130 that can limit the forward movement of the needle shield Z11 of the safety needle Z00. When the inner sleeve Z05 is subjected to a tension test, the needle shield Z11 of the safety needle Z00 needs to be clamped and moved forward, but the forward movement distance cannot be excessive, otherwise the inner sleeve Z05 cannot be reset after the tension test. The front baffle 130 located in front of the safety needle Z00 can limit the forward movement distance of the needle shield Z11.

[0082] The positioning frame 100 also includes a double-wing baffle 131 for limiting the wing Z04 of the safety needle Z00, and an avoidance notch is provided on the double-wing baffle 131. The avoidance notch can avoid the outer sliding sleeve Z09 and the pull block to avoid interfering with the tension detection of the safety needle. The double-wing baffle 131 is located in front of the wing Z04 of the safety needle Z00 to ensure the positioning accuracy of the safety needle Z00 placed on the clamping and positioning device, which is conducive to accurate detection during subsequent tension detection.

[0083] The clamping and positioning device of the present invention can position and clamp the safety needle Z00 that is about to undergo tension testing. For example, when the outer sliding sleeve Z09 undergoes tension testing, the safety needle Z00 is placed on the positioning frame 100. At this time, the fixed pressing block 101 is in the original position, that is, on the left rear side of the wing Z04 of the safety needle Z00, and will not interfere with the placement of the safety needle Z00. The power drive can act on the driving top plate 125 to drive the top plate 125 to move upward. The support head of the top block 124 will be inserted into the lower part of the pair of sheath clamping claws 121 to open it. The upper part of the pair of sheath clamping claws 121 is close to the needle sheath Z11 of the safety needle Z00 and holds the needle sheath Z11 tightly, so as to achieve the clamping of the needle sheath Z11 of the safety needle Z00. When the driving top plate 125 is driven upward, the support head of the top block 124 will be inserted into the lower part of the pair of sheath clamping claws 121 to open it. The upper part of the pair of sheath clamping claws 121 is close to the needle sheath Z11 of the safety needle Z00 and holds the needle sheath Z11 tightly, so as to achieve the clamping of the needle sheath Z11 of the safety needle Z00. 5, under the action of the shift fork 132, the movable track plate 105 of the fixed assembly moves downward at the same time. Since the first limiting column 118 on the fixed bar 104 cooperates with the first oblique slot hole 116 on the movable track plate 105, the fixed bar 104 carries the fixed pressing block 101 to move rightward. Since the second oblique slot hole 117 of the fixed track plate 106 cooperates with the second limiting column 119 on the movable track plate 105, and the fixed track plate 106 is installed on the fixed frame 102, and the fixed frame 102 is set on the positioning frame 100 through the first slide rail, the fixed frame 102 can only move up and down relative to the positioning frame 100 but cannot move forward and backward, so the movable track plate 105 will also move forward. The movable track plate 105 is installed on the fixed slide plate 103 through the third slide rail, so it drives the fixed slide plate 103, the fixed bar 104 and the fixed pressure block 101 to move forward. When the second limiting column 119 of the movable track plate 105 moves to the front limit position of the second inclined slot hole 117, the fixed pressure block 101 moves to the upper side of the pressing position. The movable track plate 105 is restricted by the fixed track plate 106 and no longer moves forward. The movable track plate 105 can only move downward. As the movable track plate 105 moves downward, the fixed track plate 106 moves downward with the cooperation of the second limiting column 119 and the second inclined slot hole 117, driving the fixed frame 102 to move downward as a whole, so that the fixed pressure block 101 moves downward to the pressing position to press the wing of the safety needle Z00 At the piece Z04, at this time, the latch 109 is inserted into the pin slot 110 under the action of the latch spring 111, and the limit pin assembly is locked with the movable track plate 105, the wing Z04 of the safety needle Z00 is compressed, and the sheath clamping claw 121 holds the needle sheath Z11 tightly, so that the safety needle Z00 located between the wing Z04 and the needle sheath Z11 can be tested for tension, such as the tension test of the outer sleeve Z09 of the safety needle; when the tension test of the inner sleeve of the safety needle is performed, the needle sheath Z11 needs to be moved forward to leave space for the inner sleeve to be pulled out, and the sheath claw frame 120 can be driven forward by the power acting on the driving block 136, and the needle sheath Z11 will not hinder the tension test of the inner sleeve Z05;After the safety needle Z00 is detected, the top plate 125 is driven to reset, the top block 124 moves down, the support head is separated from the lower part of the sheath clamping claw 121, and the upper part of the sheath clamping claw 121 is opened under the action of the clamping claw spring 122. The sheath clamping claw 121 is reset to both sides of the needle sheath Z11. While driving the top plate 125 to move down and reset, under the action of the shift fork 132, the movable track plate 105 moves up. Since the latch 109 installed on the fixed slide plate 103 is plug-in matched with the pin slot 110, it can only drive the fixed slide plate 103 to move up, the fixed frame 102 moves up, and the fixed pressure block 101 leaves the clamping position. As the fixed slide plate 103 moves up, the top of the pin limiting ring 114 at the top of the overhead 108 contacts the limiting plate 137, and the overhead 108 compresses the overhead spring 114 under the action of the limiting plate 137. 12 moves down, the pin push slot 115 moves down, and as the overhead 108 moves down, the pin push rod 113 moves up out of the pin push slot 115, and the latch 109 moves leftward and disengages from the pin slot 110 to act on the right side of the movable track plate 105. As the movable track plate 105 continues to move up, the fixed bar 104 moves leftward with the fixed pressure block 101 under the cooperation of the first oblique slot hole 116 and the first limiting column 118. Under the cooperation of the second oblique slot hole 117 and the second limiting column 119, since the fixed track plate 106 is fixed on the fixed frame 102, the fixed frame 102 can only move up and down. Therefore, in addition to moving up, the movable track plate 105 also moves backward, driving the fixed slide plate 103 to move backward, the fixed bar 104 and the fixed pressure block 101 on the fixed slide plate 103 move backward, and the fixed pressure block 101 moves leftward and backward to the original position. ;

[0084] The clamping and positioning device of the present invention can press the wing Z04 by the fixed pressure block 101 during tension testing, and can hold the needle sheath Z11 and transfer the needle sheath Z11 through the sheath clamping claw 121, thereby meeting the needs of safety needle tension testing. The positioning of the safety needle Z00 during tension testing is stable, and the positioning process will not damage the safety needle Z00. When the safety needle Z00 is loaded and unloaded after tension testing, it will not hinder the taking and placing of the safety needle Z00, thereby ensuring the quality and efficiency of the automated tension testing of the safety needle Z00.

[0085] The present invention is suitable for supporting use in a safety needle tension detection system as a station of the safety needle tension detection system. The clamping and positioning device clamps multiple safety needles Z00 side by side, passes through the outer sleeve tension detection station, the inner sleeve tension detection station and the safety needle reset station in sequence, and then turns to a position compatible with the visual detection device 500, forming a visual detection system for safety needle tension detection of the present invention. At this time, the outer sleeve Z09, the inner sleeve Z05 and the needle sheath Z11 of the safety needle Z00 should be in the factory reset state, and the present invention is to detect whether all safety needles Z00 are in the reset state. The visual inspection lens 530 moves from one side of the clamping and positioning device to the other side driven by the driving motor 551 and the synchronous toothed belt 552, and passes over each of the safety pins Z00 in turn. The visual inspection lens 530 transmits the detected image signal to the processor and the visual inspection display 520. At the same time, the image signal is analyzed and compared by the processor to determine whether it is fully reset, or the visual inspection display shows that the safety pin is not reset, and the operator is required to remove it or it is automatically removed in the next process. The visual inspection lens can be a 3D laser scanner or a camera.

[0086] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A visual inspection system for safety needle tension detection, characterized in that: The invention comprises a visual detection device (500) and a clamping and positioning device, wherein the visual detection device (500) comprises a visual detection support seat (510), a visual detection display (520) and a visual detection lens (530), wherein the visual detection display (520) and the visual detection lens (530) are connected via a signal, wherein the visual detection display (520) is mounted on the visual detection support seat (510), and the visual detection lens (530) is slidably mounted on the visual detection support seat (510), and the clamping and positioning device is arranged below the visual detection lens (530), and is used for clamping and fixing a safety needle to be detected.

2. The visual inspection system for safety needle tension detection according to claim 1, characterized in that: The visual inspection device (500) further comprises a lens holder (540), the head of the lens holder (540) being provided with a lifting adjustment plate (541), the visual inspection lens (530) being mounted on the lifting adjustment plate (541) in a manner capable of lifting and adjusting, and the lens holder (540) being slidably mounted on the visual inspection support seat (510).

3. The visual inspection system for safety needle tension detection according to claim 2, characterized in that: The visual inspection device (500) further comprises a sliding module (550), and the lens bracket (540) is mounted on the visual inspection support seat (510) via the sliding module (550).

4. The visual inspection system for safety needle tension detection according to claim 3, characterized in that: The sliding module (550) comprises a driving motor (551), a synchronous toothed belt (552), an upper flat plate, a lower flat plate, a driving pulley (554) and a driven pulley (555), wherein the driving pulley (554) is mounted on the driving shaft of the driving motor (551), the driven pulley (555) is rotatably mounted on the visual detection support seat (510), the synchronous toothed belt (552) surrounds the driving pulley (554) and the driven pulley (555), a sliding seat (542) is provided at the bottom of the lens bracket (540), the upper flat plate and the lower flat plate are fixed on the sliding seat (542), and the upper flat plate and the lower flat plate are respectively pressed on the upper and lower sides of the synchronous toothed belt (552).

5. The visual inspection system for safety needle tension detection according to claim 4, characterized in that: The visual inspection support seat (510) is also provided with a slide rail, and a sliding block cooperating with the slide rail is provided at the bottom of the slide seat (542), and the slide seat (542) is installed on the slide rail through the sliding block.

6. The visual inspection system for safety needle tension detection according to any one of claims 1 to 5, characterized in that: Sensors (560) are also provided at both ends of the visual detection support seat (510) for detecting whether the visual detection lens (530) has moved to a predetermined position.

7. The visual inspection system for safety needle tension detection according to claim 1, characterized in that: The visual inspection device (500) further comprises a light source (570), wherein the light source (570) is arranged close to the visual inspection lens (530).

8. The visual inspection system for safety needle tension detection according to claim 1, characterized in that: The clamping and positioning device comprises a positioning frame (100) and a fixing assembly arranged on the positioning frame (100), wherein the positioning frame (100) is provided with a positioning structure for positioning the safety needle (Z00), and the fixing assembly can press the safety needle (Z00); The fixed assembly comprises an assembly support portion and a fixed pressure block (101) arranged on the assembly support portion and capable of acting on the safety needle (Z00); the fixed pressure block (101) has an original position and a pressing position; the fixed pressure block (101) in the original position can be moved to the upper side of the corresponding pressing position by moving in the front-back and left-right directions, and then moved to the pressing position by moving in the up-down direction to press the safety needle (Z00); the fixed pressure block (101) in the pressing position can be moved out of the pressing position by moving in the up-down direction to release the safety needle (Z00), and then returned to the original position by moving in the front-back and left-right directions.

9. The visual inspection system for safety needle tension detection according to claim 8, characterized in that: The positioning structure comprises a wing bracket (127) at a wing (Z04) for positioning the safety needle (Z00) and a sheath notch (128) for positioning a needle sheath (Z11) of the safety needle (Z00).

10. The visual inspection system for safety needle tension detection according to claim 8, characterized in that: The assembly support portion comprises a fixed frame (102), a fixed slide plate (103), a fixed bar (104), a movable track plate (105) and a fixed track plate (106); the fixed frame (102) is arranged on the positioning frame (100) to slide up and down; the fixed slide plate (103) is arranged on the fixed frame (102) to slide forward and backward; the fixed bar (104) is arranged on the fixed slide plate (103) to slide left and right; the fixed pressure block (101) is arranged on the fixed bar (104) ), the fixed track plate (106) is arranged on the fixed frame (102), and the movable track plate (105) is slidably arranged on the fixed slide plate (103) up and down; a first linkage is arranged between the movable track plate (105) and the fixed bar (104), a second linkage is arranged between the movable track plate (105) and the fixed track plate (106), and the fixed slide plate (103) is also provided with a limit pin assembly that can lock and unlock with the movable track plate (105).

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