Reset device for tension detection of safety needle

Abstract

The invention discloses a reset device for safety needle tension detection, and belongs to the technical field of safety needle detection. The device comprises a press-fit transfer assembly and a positioning mould, the press-fit transfer assembly comprises a press-fit frame, a press-fit transfer unit and a press-fit lifting seat; the press-fit transfer unit comprises a press-fit push block, the press-fit push block is arranged on the lifting seat in a sliding manner, and the press-fit push block can act on the outer sliding sleeve under the action of a transfer driving mechanism to reset the outer sliding sleeve and the inner sliding sleeve; the positioning mould comprises a positioning rack, a fixing assembly and a sheath transfer assembly, the fixing assembly can press the safety needle, and the sheath transfer assembly can clamp the needle sheath and transfer the reset needle sheath. The fixing assembly can act on a fixed part of the safety needle, the pressing and transferring assembly can reset an inner sliding sleeve and an outer sliding sleeve of the safety needle, the sheath transferring assembly can clamp and transfer a reset needle sheath, automatic resetting of the safety needle is achieved, the resetting process is convenient and rapid and is not affected by human factors, and the safety needle can be automatically reset. And the resetting efficiency and quality of the safety needle are improved.

Description

Technical Field

[0001] This invention relates to a reset device for testing the tension of safety pins, belonging to the field of safety pin testing technology. Background Technology

[0002] After use, most people simply discard medical needles such as injection needles, blood collection needles, medication preparation needles, and irrigation needles. Because traditional injection needles, blood collection needles, medication preparation needles, and irrigation needles lack safety protection devices, workers often suffer needle pricks during waste disposal and recycling, and there is also a risk of cross-infection. To address this, professionals have designed various safety needles with concealed needle tips after use to prevent harm to the human body. The sliding sleeve-protected safety needle is one such particularly convenient type.

[0003] The so-called sliding sleeve protective safety needle Z00, such as Figures 22-24 As shown, the device includes a needle handle Z01 and a needle Z14 inserted into the needle handle Z01. The needle handle Z01 connects the needle Z14 to one end of a catheter Z12. The needle handle Z01 has a wing Z04, and the other end of the catheter Z12 is connected to a needle holder Z13. It also includes an inner sliding sleeve Z05, an outer sliding sleeve Z09, and a needle sheath Z11, all fitted onto the needle handle Z01. The safety needle Z00 is shipped with the outer sliding sleeve Z09 and inner sliding sleeve Z05 sequentially fitted onto the base of the needle handle Z01, and the needle sheath Z11 fitted onto the head of the needle handle Z01 and protecting the needle Z14. During use, medical personnel can remove the sheath and use it like a regular needle. Before discarding it, medical personnel can simply pull the outer sliding sleeve Z09 to unfold the outer sliding sleeve Z09 and inner sliding sleeve Z05 sequentially, protecting the needle Z14. This prevents the needle Z14 from pricking workers during waste transfer and processing, hence the name safety needle Z00.

[0004] To prevent the inner sliding sleeve Z05 and outer sliding sleeve Z09 from sliding arbitrarily and affecting normal use, or from retracting under external force after being pulled open when discarded, thus exposing the needle tip Z14, locking mechanisms are required on the needle handle Z01, inner sliding sleeve Z05, and outer sliding sleeve Z09. These locking mechanisms include a first slot Z02 at the rear of the needle handle Z01, a second slot Z03 at the front of the needle handle Z01, a first latch Z06 at the rear of the inner sliding sleeve Z05, a third slot Z07 at the rear of the inner sliding sleeve Z05, a fourth slot Z08 at the front of the inner sliding sleeve Z05, and a second latch Z10 at the rear of the outer sliding sleeve Z09. In the factory-set state, the first slot Z02 and the first latch Z06, as well as the third slot Z07 and the second latch Z10, are engaged and locked, ensuring normal operation. When it is necessary to discard and pull it open, the first buckle Z06 and the second card slot Z03, the second buckle Z10 and the fourth card slot Z08 are respectively engaged and locked, and will not retract.

[0005] Since the inner and outer sliding sleeves and needle handle are generally made of plastic, their slots and buckles cannot guarantee a very precise fit. Furthermore, the injection needle needs to be connected to adjacent components on the production line via adhesive application. In the factory state, the inner and outer sliding sleeves and needle handle may be too tightly fitted, making it difficult for medical personnel to pull the sleeve, thus failing to meet the environmental requirements for discarding safety needles. Therefore, it is crucial to control the pulling force of each safety needle's sliding sleeve within the standard requirements. Whether this requirement is met requires a pull test on the safety needle.

[0006] Currently, the tensile strength testing of safety pins relies on manual random checks. This process involves pulling out the outer sliding sleeve to test its tensile strength, then pulling out the inner sliding sleeve to test its tensile strength. Before pulling out the inner sliding sleeve, the needle sheath must also be pulled out to prevent it from interfering with the pulling out of the inner sliding sleeve. After testing, the outer and inner sliding sleeves, as well as the needle sheath, must be reset. The shortcomings of manual reset are: firstly, the reset efficiency of the inner and outer sliding sleeves and needle sheath is low; secondly, it is affected by human factors, with no accurate standard for the reset force, relying on intuition and poor control of the stroke. Insufficient manual force will not reset the inner and outer sliding sleeves and needle sheath properly, while excessive force will over-reset the inner and outer sliding sleeves, rendering the entire safety pin unusable. Since safety pins are disposable consumables used in large quantities, there is a need for efficient, accurate, and automated tensile strength testing equipment for the inner and outer sliding sleeves of safety pins, capable of replacing manual methods for automated reset of the inner and outer sliding sleeves.

[0007] The automated tension testing equipment for the inner and outer sliding sleeves of safety pins includes tension testing of the outer sliding sleeve and tension testing of the inner sliding sleeve. The safety pins are positioned in groups by a positioning fixture. After the positioning fixture carries the safety pins through the above process, both the outer and inner sliding sleeves of the safety pin are in a semi-open state. In order to efficiently match the automated tension testing equipment, a matching device is needed to reset the safety pin, so that the outer and inner sliding sleeves are sequentially engaged in place and reach the factory condition. Summary of the Invention

[0008] To address the shortcomings of existing technologies, this invention provides a reset device for detecting the tension of safety pins.

[0009] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a reset device for safety pin tension detection, comprising a pressing and transferring assembly for resetting the inner and outer sliding sleeves of the safety pin and a positioning jig for carrying the safety pin;

[0010] The pressing and transferring assembly includes a pressing frame, a pressing and transferring unit, a pressing lifting seat, and a lifting drive mechanism for driving the pressing lifting seat to move up and down; the pressing and transferring unit is located above the positioning fixture, and the pressing lifting seat is mounted on the pressing frame via the lifting drive assembly;

[0011] The pressing and transferring unit includes a pressing push block, which is slidably disposed on the pressing lifting seat. Under the action of the transfer driving mechanism, the pressing push block can act on the outer sliding sleeve to reset the outer sliding sleeve and the inner sliding sleeve.

[0012] The positioning fixture includes a positioning frame, a fixing assembly and a sheath transfer assembly mounted on the positioning frame. The positioning frame is also provided with a positioning structure for positioning the safety pin. The fixing assembly can press the safety pin, and the sheath transfer assembly can clamp and transfer the needle sheath of the safety pin to reset it.

[0013] The beneficial effects of the present invention are as follows: the fixing assembly of the positioning fixture can press the safety needle placed on it, the sheath transfer assembly can clamp the needle sheath of the safety needle, and prepare for the rearward repositioning of the inner sliding sleeve, outer sliding sleeve and needle sheath of the safety needle. The pressing lifting seat descends, the pressing push block of the pressing and transferring unit can act on the outer sliding sleeve, the transfer drive mechanism moves, the outer sliding sleeve is driven to move backward by the pressing push block, and the outer sliding sleeve will drive the inner sliding sleeve to move backward during the rearward movement. The outer sliding sleeve and the inner sliding sleeve are reset in place, the sheath transfer assembly of the positioning fixture can clamp the transfer needle sheath, and can clamp the needle sheath to transfer and reset the needle sheath of the safety needle. This invention has a simple structure. The fixing assembly can act on the stationary parts of the safety needle, the sheath transfer assembly can clamp the needle sheath to achieve stable positioning of the safety needle, the pressing and transferring assembly can reset the inner and outer sliding sleeves of the safety needle, and the sheath transfer assembly can clamp and transfer the needle sheath to complete the reset of the needle sheath, realizing the automated reset of the safety needle. The reset process is convenient and quick, unaffected by human factors, improving the reset efficiency and quality of the safety needle, and can be widely used in the reset of batch safety needles.

[0014] Based on the above technical solution, the present invention can be further improved as follows.

[0015] Furthermore, the fixing assembly includes an assembly support and a fixing block disposed on the assembly support and capable of acting on the safety pin;

[0016] The fixed pressure block has an initial position and a pressing position. The fixed pressure block in the initial position can move to the position above the corresponding pressing position by moving in the front-back and left-right directions, and then move to the pressing position to press the safety pin by moving in the up-down direction. The fixed pressure block in the pressing position can move out of the pressing position to release the safety pin by moving in the up-down direction, and then move back to the initial position by moving in the front-back and left-right directions.

[0017] The beneficial effects of adopting the above-mentioned further solution are that the safety needle needs to be clamped during the reset of the inner sliding sleeve, outer sliding sleeve, and needle sheath. The fixing assembly can achieve the clamping and positioning of the safety needle. The fixing block can move to the clamping position to clamp the safety needle, preparing for the reset of the safety needle. After the reset of the safety needle is completed, the fixing block can release the safety needle and move it back to the original position, facilitating the discharge of the safety needle. When the fixing block clamps the safety needle, the pressing and conveying unit moves down to the position where the pressing push block acts on the outer sliding sleeve. Under the action of the conveying drive mechanism, the pressing push plate moves backward and drives the outer sliding sleeve to move backward, so that the outer sliding sleeve and inner sliding sleeve can be reset, so that the second buckle of the outer sliding sleeve reset can cooperate with the third groove on the inner sliding sleeve, and the first buckle of the inner sliding sleeve reset can cooperate with the first groove on the needle handle. The sheath transfer mechanism can clamp the needle sheath and drive the needle sheath to move backward and reset. The transfer of the fixed pressure block between the original position and the tightened position not only facilitates the feeding and discharging of the safety pin, but also ensures that the fixed pressure block will not damage the safety pin when tightening and loosening it, thus guaranteeing the reset quality and efficiency of the safety pin.

[0018] Furthermore, the assembly support includes a fixed frame, a fixed slide plate, a fixed strip, a movable track plate, and a fixed track plate. The fixed frame is slidably mounted on the positioning frame, the fixed slide plate is slidably mounted on the fixed frame, the fixed strip is slidably mounted on the fixed slide plate, the fixed pressure block is mounted on the fixed strip, the fixed track plate is mounted on the fixed frame, and the movable track plate is slidably mounted on the fixed slide plate. A first linkage is provided between the movable track plate and the fixed strip, and a second linkage is provided between the movable track plate and the fixed track plate. The fixed slide plate is also provided with a limit pin assembly that can lock and unlock with the movable track plate.

[0019] The beneficial effect of adopting the above-mentioned further solution is that, in order to realize the movement of the fixed pressure block between the original position and the pressing position, the relative relationship between the various components in the fixing assembly is set to meet the requirement of the fixed pressure block changing position between the original position and the pressing position. When the fixed pressure block moves to the pressing position, the movable track plate moves downward under the power drive. The fixing bar drives the fixed pressure block to move to the right under the action of the first linkage. Since the fixing frame is slidably mounted on the positioning frame, the fixing frame will not move in the front and back direction. Therefore, under the action of the second linkage, the movable track plate will move forward. Since the movable track plate is slidably mounted on the fixed slide plate, the fixed slide plate will carry the fixing 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. The fixed pressure block can move forward to the right to above the pressing position. The movable track plate will then move downward, which will drive the fixed track plate to move downward. Since the fixed track plate is mounted on the fixing frame, the fixed pressure block can move forward to the right to the pressing position. The frame slides up and down on the positioning frame. When the fixed frame moves downward, the fixed pressure block moves downward to the pressing position to press the safety needle. When the fixed pressure block is in the pressing position, the limit pin assembly can lock with the movable track plate. After the safety needle is pressed, the inner sliding sleeve, outer sliding sleeve, and needle sleeve can be pressed and reset. After the reset, the movable track plate moves upward under the power drive. Due to the locking relationship between the limit pin assembly and the movable track plate, the fixed slide plate moves upward. The fixed slide plate is set on the fixed frame and slides back and forth. Therefore, when the fixed frame moves upward, the fixed pressure block disengages from the safety needle and rises above the pressing position. The movable track plate continues to move upward, and the lock between the limit pin assembly and the movable track plate is released. After the lock is released, the movable track plate moves the fixed bar to the left under the action of the first linkage. Under the action of the second linkage, and because the fixed track plate is set on the fixed frame, the fixed frame can only slide up and down. Therefore, 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. The fixed pressure block can be reset by moving to the left and backward, and then the safety needle can be discharged.

[0020] Furthermore, the limiting pin assembly includes a pin holder, a bushing movably mounted on the pin holder, and a pin. The pin holder is mounted on the fixed slide plate, and the movable track plate has a pin slot. A pin spring is provided between the pin and the fixed slide plate. Under the action of the pin spring, the pin can act on the side of the movable track plate or be inserted into the pin slot. The pin has a pin lever. The lower part of the bushing has a pin lever groove that cooperates with the pin lever. The upper part of the bushing has a pin limiting ring. A bushing spring is fitted on the bushing between the pin limiting ring and the pin holder. The positioning frame has a limiting plate that can limit the pin limiting ring.

[0021] The beneficial effect of adopting the above-mentioned further solution is that when the clamping pin is inserted into the pin slot and the fixed block needs to return from the clamping position to the original position, the limiting pin assembly can ensure that the fixed block rises first and then moves in the left-right and front-back directions. Specifically, the movable track plate moves upward under the power drive. Since the pin is inserted into the pin slot and the pin frame is fixedly installed on the fixed slide plate, the fixed slide plate slides back and forth on the fixed frame, thus driving the fixed frame to move upward. The fixed block will first move upward away from the needle handle and / or wing of the safety pin. As the pin frame moves upward, the pin limiting ring contacts the limiting plate of the positioning frame, the pin is compressed by the force and moves downward, the pin lever moves to the left, the pin compresses the pin spring, the pin disengages from the pin slot, and the fixed block moves upward into place. As the movable track plate continues to move upward, under the action of the first linkage, the fixing bar carries the fixed block to the left. Under the action of the second linkage, the movable track plate drives the fixed slide plate to move backward, and the fixed block moves to the left and backward, thus returning from the clamping position to the original position.

[0022] Furthermore, the first linkage includes a first inclined slot and a first limiting post that can move within the first inclined slot. The first inclined slot is disposed on the movable track plate, and the first limiting post is disposed on the fixed strip.

[0023] The beneficial effect of adopting the above-mentioned further solution is that the first limiting post can move in the first inclined slot hole. Under the action of the first linkage, when the movable track plate moves in the up and down direction, the fixed pressure block can move in the left and right direction, realizing the power transmission from the up and down movement of the movable track plate to the left and right movement of the fixed pressure block.

[0024] Furthermore, the second linkage includes a second inclined slot and a second limiting post that can move within the second inclined slot. The second inclined slot is disposed on the fixed track plate, and the second limiting post is disposed on the movable track plate.

[0025] The beneficial effect of adopting the above-mentioned further solution is that the second limiting post can move in the second inclined slot hole. Under the action of the second linkage, when the movable track plate moves up and down, the fixed pressure block can move in the front and back direction, realizing the power transmission from the up and down movement of the movable track plate to the front and back movement of the fixed pressure block.

[0026] Furthermore, the sheath transfer assembly includes a sheath claw, a sheath transfer drive mechanism for driving the sheath claw back and forth, a sheath clamping unit disposed on the sheath claw, and a sheath clamping drive mechanism for driving the sheath clamping unit. The sheath claw is slidably disposed on the positioning frame. Under the action of the sheath clamping drive mechanism, the sheath clamping unit can clamp or release the needle sheath.

[0027] The beneficial effect of adopting the above-mentioned further solution is that the sheath clamping unit can clamp the needle sheath under the action of the sheath clamping drive mechanism. When it is necessary to reset the needle sheath of the safety needle, the sheath claw frame is driven to move backward under the action of the sheath transfer drive mechanism, thereby realizing the needle sheath repositioning.

[0028] Furthermore, the sheath clamping unit includes a pair of sheath clamping claws located on both sides of the needle sheath, the middle part of the sheath clamping claws is hinged to the sheath clamping claw frame, and a clamping claw spring is provided between the upper parts of the pair of sheath clamping claws; the sheath clamping drive mechanism includes a top block support plate and a top block disposed on the top block support plate, the top block is correspondingly disposed below the sheath clamping unit, and the top block is provided with a support head that can open the lower part of the pair of sheath clamping claws.

[0029] The beneficial effect of adopting the above-mentioned further solution is that the upper part of the pair of sheath grippers is in the clamping position. Under normal conditions, the pair of sheath grippers are in the open state under the action of the gripper spring, which will not interfere with the picking and putting of the safety needle. When it is necessary to clamp the needle sheath, the top block support plate moves upward under the power drive, and the support head can be inserted between the lower parts of the pair of sheath grippers, so that the lower part of the pair of sheath grippers opens, and the upper part compresses the gripper spring to clamp the needle sheath of the safety needle, which is in preparation for the reset of the needle sheath of the safety needle.

[0030] Furthermore, the positioning fixture also includes a shift fork mechanism, which includes a shift fork rotatably mounted on the positioning frame. One end of the shift fork is provided with a first shift groove capable of driving the fixing assembly to press the safety pin, and the other end of the shift fork is provided with a second shift groove capable of driving the sheath transfer assembly to clamp the pin sheath.

[0031] The beneficial effect of adopting the above-mentioned further solution is that the drives of the fixed assembly and the sheath transfer assembly can be set separately, each with its own independent power drive. Of course, the fixed assembly and the sheath transfer assembly can also be driven simultaneously through the aforementioned shift fork mechanism. Using a single power source can simultaneously meet the needs of the fixed assembly pressing the safety pin and the sheath transfer assembly clamping the safety pin sheath, reducing the number of drive components and lowering costs.

[0032] Furthermore, the pressing and transferring unit also includes an elastic buffer assembly, and the pressing and transferring assembly also includes a transfer push plate slidably disposed on the pressing and lifting seat. The transfer push plate can move back and forth under the action of the transfer driving mechanism, and the pressing push block is connected to the transfer push plate through the elastic buffer assembly.

[0033] The beneficial effect of adopting the above-mentioned further solution is that when the transfer drive mechanism is activated, the transfer push plate can move backward, and the transfer push plate can drive one or more pressing transfer units to move backward. The pressing push block of the pressing transfer unit acts on the outer sliding sleeve, causing the outer sliding sleeve to move backward. As the outer sliding sleeve moves backward, the inner sliding sleeve will move backward as well, until the outer and inner sliding sleeves are pressed into place. When one or more safety pins are placed on the positioning fixture, since the placement positions of the safety pins cannot be completely consistent, there will be differences between the front and back. In order to ensure the reset of all safety pins, the elastic buffer component can play an elastic buffering role during the reset process of the outer and inner sliding sleeves. After the transfer push plate moves a fixed distance, under the action of the elastic buffer component, the inner and outer sliding sleeves of the safety pins can be accurately reset, without over-pressing and resetting, damaging the safety pins, or failing to reset.

[0034] Furthermore, the elastic buffer assembly includes a pressing connecting shaft, a pressing connecting head, and a compression spring disposed between the pressing connecting shaft and the pressing connecting head. The pressing connecting head is connected to the transfer push plate. One end of the pressing connecting shaft is connected to the pressing push block, and the other end can move axially within the pressing connecting head. The compression spring is fitted on the pressing connecting shaft.

[0035] The beneficial effect of adopting the above-mentioned further solution is that the compression spring located between the pressing connecting shaft and the pressing connecting head can undergo elastic deformation when subjected to force, absorb and mitigate the impact force, ensure the inner and outer sliding sleeves of the safety pin are reset, and prevent the safety pin from being damaged due to excessive reset. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the main structure of the present invention;

[0038] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0039] Figure 4 This is a schematic diagram of the pressing pusher of the present invention acting on the outer sliding sleeve.

[0040] Figure 5 This is a three-dimensional structural diagram of multiple pressing and transferring units on the pressing lifting seat of the present invention;

[0041] Figure 6 This is a bottom view of the structure of multiple pressing and transferring units on the pressing lifting base of the present invention;

[0042] Figure 7 for Figure 6 A schematic diagram of the cross-sectional structure along the AA direction;

[0043] Figure 8 This is a schematic diagram of the positioning of the safety pin in the positioning device of the present invention;

[0044] Figure 9 This is a top view schematic diagram of the safety pin placement state of the present invention;

[0045] Figure 10 This is a three-dimensional structural diagram of the safety pin placement state of the present invention;

[0046] Figure 11 This is a structural schematic diagram of the safety pin positioning state of the present invention;

[0047] Figure 12 This is a top view schematic diagram of the positioning state of the safety pin of the present invention;

[0048] Figure 13 This is a three-dimensional structural diagram of the safety pin positioning state of the present invention;

[0049] Figure 14 This is a schematic diagram of the fixing block of the fixing assembly of the present invention in its original position;

[0050] Figure 15 This is a schematic diagram of the original position limit pin assembly and the movable track plate in the engagement state of the present invention;

[0051] Figure 16 This is a schematic diagram of the overhead and pin structure of the present invention;

[0052] Figure 17 This is a schematic diagram of the fixing block of the fixing assembly of the present invention in the clamping position.

[0053] Figure 18 This is a schematic diagram of the structure of the clamping position limit pin assembly and the movable track plate in the cooperation state of the present invention;

[0054] Figure 19 This is a schematic diagram of the clamping pin sheath state angle of the sheath clamping assembly of the present invention;

[0055] Figure 20 This is a schematic diagram of the clamping pin sheath state angle two of the sheath clamping assembly of the present invention;

[0056] Figure 21 This is a schematic diagram of the sheath clamping assembly of the present invention in the state of the released needle sheath;

[0057] Figure 22 This is a schematic diagram of the safety pin.

[0058] Figure 23 A schematic diagram of the structure of the safety pin with the outer sliding sleeve pulled out;

[0059] Figure 24 This is a schematic diagram of the split structure of a safety needle;

[0060] In the diagram, 100 is the positioning frame; 101 is the fixing block; 102 is the fixing frame; 103 is the fixing slide; 104 is the fixing strip; 105 is the movable track plate; 106 is the fixed track plate; 107 is the pin frame; 108 is the pin holder; 109 is the pin; 110 is the pin slot; 111 is the pin spring; 112 is the pin holder spring; 113 is the pin lever; 114 is the pin limit ring; 115 is the pin slot; 116 is the first inclined slot hole; 117 is the second inclined slot hole; 118 is the first limit post; 119 is the second limit post; and 120 is the protective claw frame. 121. Sheath gripper; 122. Gripper spring; 123. Top block support plate; 124. Top block; 125. Drive top plate; 126. Connecting column; 127. Wing bracket; 128. Sheath groove; 129. Tube positioning groove; 131. Double wing baffle; 132. Shift fork; 133. Main shaft; 134. First shift groove; 135. Second shift groove; 136. Drive stop; 137. Limiting plate; Z00. Safety pin; Z01. Pin handle; Z02. First slot; Z03. Second slot; Z04. Wing; Z05. Inner sliding sleeve;

[0061] Z06, First buckle; Z07, Third slot; Z08, Fourth slot; Z09, Outer sleeve; Z10, Second buckle; Z11, Needle sheath; Z12, Guide tube; Z13, Needle holder; Z14, Needle; 400, Pressing frame; 401, Pressing push block; 402, Pressing connecting shaft; 403, Compression spring; 404, Pressing connector; 405, Pressing lifting seat; 406, Transfer push plate; 407, Pressing connecting sleeve; 408, Lifting drive cylinder; 409, Transfer servo motor; 410, Transfer screw; 411, Transfer screw nut; 412, Limiting slide plate; 413, Limiting drive cylinder; 414, Lifting plate; 415, Lifting drive cylinder; 416, Transfer drive cylinder; 417, Transfer drive component; 418, Pressing rod. Detailed Implementation

[0062] The principles and features of the present invention are described below with reference to examples. The examples are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0063] like Figures 1-21 As shown, a reset device for safety pin tension detection includes a pressing and transferring assembly for resetting the inner sliding sleeve Z05 and the outer sliding sleeve Z09 of the safety pin Z00, and a positioning jig for carrying the safety pin Z00.

[0064] The pressing and transferring assembly includes a pressing frame 400, a pressing and transferring unit, a pressing lifting seat 405, and a lifting drive mechanism for driving the pressing lifting seat 405 to move up and down; the pressing and transferring unit is located above the positioning fixture, and the pressing lifting seat 405 is mounted on the pressing frame 400 via the lifting drive assembly.

[0065] The pressing and transferring unit includes a pressing push block 401, which is slidably disposed on the pressing lifting seat 405. Under the action of the transfer driving mechanism, the pressing push block 401 can act on the outer sliding sleeve Z09 to reset the outer sliding sleeve Z09 and the inner sliding sleeve Z05.

[0066] The positioning fixture includes a positioning frame 100, a fixing assembly and a sheath transfer assembly disposed on the positioning frame 100. The positioning frame 100 is also provided with a positioning structure for positioning the safety needle Z00. The fixing assembly can press the safety needle Z00, and the sheath transfer assembly can clamp and transfer the needle sheath Z11 of the safety needle Z00 to reset it.

[0067] The fixing assembly includes an assembly support and a fixing block 101 disposed on the assembly support and capable of acting on the safety pin Z00;

[0068] The fixed pressure block 101 has an initial position and a pressing position. The fixed pressure block 101 in the initial position can move to the upper position above the corresponding pressing position by moving in the front-back and left-right directions, and then move to the pressing position to press the safety pin Z00 by moving in the up-down direction. The fixed pressure block 101 in the pressing position can move out of the pressing position to release the safety pin Z00 by moving in the up-down direction, and then move back to the initial position by moving in the front-back and left-right directions.

[0069] The assembly support includes a fixed frame 102, a fixed slide plate 103, a fixed strip 104, a movable track plate 105, and a fixed track plate 106. The fixed frame 102 is slidably mounted on the positioning frame 100 via a first slide rail. The fixed slide plate 103 is slidably mounted on the fixed frame 102 via a guide post. The fixed strip 104 is slidably mounted on the fixed slide plate 103 via a second slide rail. The fixed pressure block 101 is mounted on the fixed strip 104. The fixed track plate 106 is mounted on the fixed frame 102. The movable track plate 105 is slidably mounted on the fixed slide plate 103 via a third slide rail. A first linkage is provided between the movable track plate 105 and the fixed strip 104, and a second linkage is provided between the movable track plate 105 and the fixed track plate 106. The fixed slide plate 103 is also provided with a limit pin assembly that can lock and unlock with the movable track plate 105.

[0070] The fixed pressure block 101 moves from its original displacement to the pressing position, the movable track plate 105 moves downward, and under the action of the first linkage, the fixing bar 104 moves to the right. Under the action of the second linkage, the movable track plate 105 carries the fixed sliding plate 103 forward. When the second linkage moves into position, the fixed pressure block 101 moves to the right and forward above the pressing position. As the movable track plate 105 continues to move downward, the fixed track plate 106 moves downward, causing the fixing frame 102 to move downward. The fixed pressure block 101 moves downward to the pressing position to press the safety pin Z00. The pressing position limit pin assembly locks into the movable track plate 105. After the fixed pressure block 101 presses the safety pin Z00, the inner sliding sleeve Z05, outer sliding sleeve Z09, and needle sleeve Z11 can be reset. The fixed pressure block 101 returns from the pressing position to its original position, the movable track plate 105 moves upward, and under the locking action of the limiting pin assembly and the movable track plate 105, the fixed slide plate 103 and the fixing frame 102 move upward. The fixed pressure block 101 releases the safety pin Z00 and moves upward. As the movable track plate 105 moves upward, the limiting pin assembly and the movable track plate 105 are unlocked. Under the action of the first linkage member, the fixing bar 104 moves to the left. Under the action of the second linkage member, the movable track plate 105 carries the fixed slide plate 103 and moves backward. The fixed pressure block 101 moves left and backward back to its original position. The fixed pressure block 101 returning to its original position allows the reset safety pin Z00 to be unloaded.

[0071] The limiting pin assembly includes a pin holder 107, a bushing 108 movably mounted on the pin holder 107, and a pin 109. The pin holder 107 is mounted on the fixed slide plate 103. The movable track plate 105 is provided with a pin slot 110. A pin spring 111 is provided between the pin 109 and the fixed slide plate 103. Under the action of the pin spring 111, the pin 109 can act on the side of the movable track plate 105 or be inserted into the pin slot 110. A pin lever 113 is provided on the pin 109. The lower part of the bushing 108 is provided with a pin lever groove 115 that cooperates with the pin lever 113. The upper part of the bushing 108 is provided with a pin limiting ring 114. A bushing spring 112 is fitted on the bushing 108 between the pin limiting ring 114 and the pin holder 107. The positioning frame 100 is provided with a limiting plate 137 that can engage the pin limiting ring 114.

[0072] The first linkage includes a first inclined slot 116 and a first limiting post 118 that can move within the first inclined slot 116. The first inclined slot 116 is disposed on the movable track plate 105, and the first limiting post 118 is disposed on the fixing strip 104. The first inclined slot 116 is inclined to the right from bottom to top. The first inclined slot 116 cooperates with the first limiting post 118, so that when the movable track plate 105 moves in the vertical direction, the fixing strip 104 carrying the fixing block 101 can move in the horizontal direction.

[0073] The second linkage includes a second inclined slot 117 and a second limiting post 119 movable within the second inclined slot 117. The second inclined slot 117 is disposed on the fixed track plate 106, and the second limiting post 119 is disposed on the movable track plate 105. The second inclined slot 117 is inclined backward from bottom to top, and the plane of the fixed track plate 106 is perpendicular to the plane of the movable track plate 105. The second limiting post 119 cooperates with the second inclined slot 117, so that when the movable track plate 105 moves up and down, the movable track plate 105 can drive the fixed slide plate 103 to move in the front and back direction. Moreover, when the second limiting post 119 reaches the limit position in front of the second inclined slot 117, as the movable track plate 105 moves downward, it can also drive the fixed track plate 106 and the fixing frame 102 to move downward, realizing the downward movement of the fixing block 101.

[0074] The positioning structure includes a wing bracket 127 for positioning the wing Z04 and a sleeve groove 128 for positioning the needle sleeve Z11. The wing bracket 127 can support the wing Z04 and the needle shank Z01 around the wing Z04. When the fixing block 101 of the fixing assembly acts on the needle shank Z01 and / or the wing Z04 to press the safety needle Z00, the wing bracket 127 can cooperate with the fixing block 101 to press and position the safety needle Z00. The sleeve groove 128 can support and position the needle sleeve Z11 to meet the requirements of clamping and transferring the needle sleeve Z11 to reset.

[0075] The sheath transfer assembly includes a sheath claw 120, a sheath transfer drive mechanism for driving the sheath claw 120 to move back and forth, a sheath clamping unit and a sheath clamping drive mechanism disposed on the sheath claw 120. The sheath claw 120 is slidably disposed on the positioning frame 100 via a guide rod. Under the action of the sheath clamping drive mechanism, the sheath clamping unit can clamp or release the needle sheath Z11.

[0076] The sheath clamping unit includes a pair of sheath clamping claws 121 located on both sides of the needle sheath Z11. The middle part of the sheath clamping claws 121 is hinged to the sheath claw frame 120. A clamping claw spring 122 is provided between the upper parts of the pair of sheath clamping claws 121. The sheath clamping drive mechanism includes a top block support plate 123 and a top block 124 disposed on the top block support plate 123. The top block 124 is correspondingly disposed below the sheath clamping unit. The top block 124 is provided with a support head that can open the lower part of the pair of sheath clamping claws 121.

[0077] The sheath transfer drive mechanism includes a drive stop 136 and a transfer drive cylinder 416 for moving the drive stop 136 back and forth. The drive stop 136 is mounted on the sheath claw holder 120, and the transfer drive cylinder 416 is mounted on the positioning frame 100 or the pressing frame 400. After the sheath claw 121 clamps the needle sheath Z11, the transfer drive cylinder 416 moves, causing the drive stop 136 to move backward and the sheath claw 121 to move backward, so that the needle sheath Z11 of the safety needle Z00 can be reset. The transfer drive cylinder 416 can be mounted on the pressing lifting seat 405. The piston rod of the transfer drive cylinder 416 is provided with a transfer drive component 417, and the transfer drive component 417 is provided with a slot that can cooperate with the drive stop 136. When the pressing lifting seat 405 moves downward, the slot of the transfer drive component 417 can engage with the drive stop 136.

[0078] The positioning fixture also includes a shift fork mechanism, which includes a shift fork 132. The shift fork 132 is rotatably mounted on the positioning frame 100. One end of the shift fork 132 is provided with a first shift groove 134 that can drive the fixing assembly to press the safety pin Z00, and the other end of the shift fork 132 is provided with a second shift groove 135 that can drive the sheath transfer assembly to clamp the pin sheath Z11. The shift fork 132 is mounted on the main shaft 133, which is rotatably mounted on the positioning frame 100. The first shift groove 134 cooperates with the movable track plate 105. A track plate shift shaft is provided on the movable track plate 105. The first shift groove 134 can drive the movable track plate 105 to move up or down, thereby achieving the purpose of releasing or pressing the safety pin Z00. The second shift groove 135 cooperates with the drive top plate 125, which moves downward or upward to release or clamp the pin sheath Z11.

[0079] The sheath clamping drive mechanism also includes a drive top plate 125, one end of which is connected to a connecting column 126, and the other end of the connecting column 126 passes through the sheath claw frame 120 and is connected to the top block support plate 123. The drive top plate 125 is located in the second shifting slot 135. The up and down movement of the drive top plate 125 can drive the movable track plate 105 of the positioning fixture to move down or up through the shifting fork mechanism.

[0080] The positioning fixture located below the pressing and transferring unit can have an independent support. For example, the positioning fixture can be mounted on a rotating support such as a turntable. The pressing push block 401 can have its front end plate act on the front end face of the outer sliding sleeve Z09, and the rear end plate of the pressing push block 401 can be provided with a clearance notch for the clearance pin sleeve Z11.

[0081] The pin holder 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.

[0082] The pressing and transferring unit also includes an elastic buffer assembly, and the pressing and transferring assembly also includes a transfer push plate 406 slidably disposed on the pressing lifting seat 405. The transfer push plate 406 can move back and forth under the action of the transfer driving mechanism, and the pressing push block 401 is connected to the transfer push plate 406 through the elastic buffer assembly.

[0083] The elastic buffer assembly includes a pressing connecting shaft 402, a pressing connecting head 404, and a compression spring 403 disposed between the pressing connecting shaft 402 and the pressing connecting head 404. The pressing connecting head 404 is connected to the transfer push plate 406. One end of the pressing connecting shaft 402 is connected to the pressing push block 401, and the other end can move axially within the pressing connecting head 404. The compression spring 403 is fitted onto the pressing connecting shaft 402, and a limiting ring platform is provided on the pressing connecting shaft 402. The elastic buffer assembly also includes a pressing connecting sleeve 407, which is disposed outside the compression spring 403. The sleeve guides the limiting ring platform and protects the compression spring 403.

[0084] The pressing push block 401 is disposed on the pressing sliding seat, and the pressing sliding seat is connected to the pressing connecting shaft 402. The pressing push block 401 includes a rear end plate. The rear end plate can act on the rear end surface of the outer sliding sleeve Z09 to drive the outer sliding sleeve Z09 and the inner sliding sleeve Z05 to reset.

[0085] The transfer drive mechanism further includes a transfer servo motor 409, a transfer lead screw 410, and a transfer lead screw nut 411. The transfer lead screw nut 411 is connected to the transfer push plate 406, and the transfer lead screw 410 is connected to the output shaft of the transfer servo motor 409. The transfer lead screw 410 is rotatably mounted on the pressing lifting seat 405. When the transfer servo motor 409 is activated, the transfer lead screw 410 rotates, and the transfer lead screw nut 411 moves along the axial direction of the transfer lead screw 410, thereby realizing the movement of the transfer push plate 406 in the front-back direction.

[0086] The lifting drive mechanism includes a lifting drive cylinder 408, which is mounted on the pressing frame 400, and the piston rod of the lifting drive cylinder 408 is connected to the pressing lifting seat 405.

[0087] The pressing lifting seat 405 is also provided with a pressing rod 418, which can press the safety needle Z00. The pressing rod 418 presses the safety needle Z00 by acting on the fixed pressing block 101, further ensuring the stability of the safety needle Z00 when it resets.

[0088] The pressing frame 400 is also equipped with a lifting mechanism for driving the positioning fixture to press the safety pin Z00, clamp the pin sleeve Z11, and transfer pin sleeve Z11. The lifting mechanism includes a lifting plate 414 and a lifting drive cylinder 415 for driving the lifting plate 414 to move up and down. The driving power for pressing the safety pin Z00 and clamping the pin sleeve Z11 on the positioning fixture can be set on the pressing frame 400. This can reduce the weight of the positioning fixture transferred at each workstation and reduce energy consumption. After the positioning fixture is in place, the lifting mechanism is located below the positioning fixture. The lifting plate 414 can move upward to act on the drive top plate 125 and move downward to leave the drive top plate 125, thereby realizing the driving of the fixing block 101 and the sleeve clamping claw 121 of the positioning fixture.

[0089] The pressing frame 400 is also equipped with a limiting component for limiting the top of the positioning frame 100. The limiting component includes a limiting slide plate 412 and a limiting drive cylinder 413 for driving the limiting slide plate 412 to move back and forth. The limiting slide plate 412 is slidably mounted on the pressing frame 400. When the safety pin Z00 is pressed by the positioning fixture, the positioning fixture will be subjected to an upward force. The limiting slide plate 412 can extend backward under the action of the limiting drive cylinder 413 and act on the top of the positioning frame 100, which can balance the force on the positioning fixture and prevent the driving force from acting on the turntable when the positioning fixture is installed on the turntable, thus affecting the rotation of the positioning fixture at each station.

[0090] The positioning structure also includes a tube positioning groove 129 for positioning the conduit Z12 of the safety needle Z00. The conduit Z12 is a flexible tube, and the tube positioning groove 129 positions the conduit Z12, preventing it from interfering with the repositioning of the inner sliding sleeve Z05, outer sliding sleeve Z09, and needle sheath Z11. When there are multiple safety needles Z00, the positioning structure ensures that the safety needles Z00 are neatly arranged and do not interfere with each other.

[0091] The positioning frame 100 also includes a double-wing baffle 131 for limiting the movement of the winglet Z04. The double-wing baffle 131 is provided with a clearance slot. The clearance slot can avoid the inner sliding sleeve Z05 and the outer sliding sleeve Z09, and can also avoid the pressing push block 401, thus avoiding interference with the reset of the safety pin Z00. The double-wing baffle 131 is located in front of the winglet Z04 to ensure accurate positioning of the safety pin Z00.

[0092] The reset of the safety pin Z00 is generally performed after the tension tests of the outer sliding sleeve Z09 and the inner sliding sleeve Z05. It requires resetting the outer sliding sleeve Z09, inner sliding sleeve Z05, and needle sheath Z11 of the safety pin Z00. During reset, the positioning fixture is located below the pressing and transferring unit, and the fixing block 101 is in its original position, i.e., on the left rear side of the wing Z04 of the safety pin Z00. The lifting drive cylinder 415 is activated, and the lifting plate 414 moves upward to lift the drive top plate 125. Simultaneously, under the action of the shift fork 132, the movable track plate 105 moves downward. The first limiting post 118 engages with the first inclined slot hole 116, and the fixing bar 104 carries the fixing block 101 to the right. Because the second inclined slot hole 117 engages with the second limiting post 119, and the fixing track plate 106 is mounted on the fixing frame 102, the fixing frame 102 can only move up and down relative to the positioning frame 100. Due to the forward and backward movement of the sliding plate 105, the movable track plate 105 will also move forward. Since the movable track plate 105 is installed on the fixed slide plate 103, it drives the fixed slide plate 103, the fixing strip 104, and the fixing block 101 to move forward. When the second limiting post 119 moves to the limit position in front of the second inclined slot hole 117, the fixing block 101 moves to the right and forward above the pressing position. Due to the restriction of the fixed track plate 106, the movable track plate 105 no longer moves forward but only moves downward. As the movable track plate 105 moves downward, the fixed track plate 106 moves downward along with it through the cooperation of the second limiting post 119 and the second inclined slot hole 117, driving the fixing frame 102 to move downward as a whole, thereby realizing the downward movement of the fixing block 101. The safety needle Z00's wing Z04 is pressed to the clamping position. At this time, the pin 109 is inserted into the pin slot 110 under the action of the pin spring 111, and the limit pin assembly is locked with the movable track plate 105, thus clamping the safety needle Z00. The drive top plate 125 moves upward, the top block 124 moves upward, and the support head of the top block 124 inserts between the lower parts of the sheath clamping claws 121, opening the lower parts of the pair of sheath clamping claws 121. The upper parts of the pair of sheath clamping claws 121 clamp the needle sheath Z11. The lifting drive cylinder 408 is activated, the pressing lifting seat 405 descends, and the pressing push block 401 descends to act on the outer sliding sleeve Z09 of the safety needle Z00. The transfer servo motor 409 is activated, and the transfer wire... When lever 410 rotates, the transfer screw nut 411 drives the transfer push plate 406 to move backward, which in turn drives the outer sliding sleeve Z09 to move backward. As the outer sliding sleeve Z09 moves backward, the inner sliding sleeve Z05 also moves backward until the second buckle Z10 of the outer sliding sleeve Z09 is engaged in the third slot Z07 of the inner sleeve, and the first buckle Z06 of the inner sliding sleeve Z05 is engaged in the first slot Z02 of the needle handle Z01. The outer sliding sleeve Z09 and the inner sliding sleeve Z05 of the safety needle Z00 are reset. The transfer drive cylinder 416 moves the drive stop 136 to move backward, the sleeve claw 120 moves backward, and the sleeve clamp 121 can clamp the needle sleeve Z11 to move backward. The needle sleeve Z11 is reset to protect the needle tip of the safety needle Z00.After the outer sliding sleeve Z09, inner sliding sleeve Z05, and needle sheath Z11 have all been reset, the pressing lifting seat 405 and the transfer push plate 406 have been reset. When the fixing block 101 needs to be reset, the lifting drive cylinder 415 resets, the lifting plate 414 moves down, the drive top plate 125 moves down without support, the top block 124 moves down under the action of the drive top plate 125, the support head leaves the sheath clamp 121, and the pair of sheath clamps 121 are lifted by the clamp spring 122. The needle sleeve Z11 is opened and closed; under the action of the shift fork 132, the movable track plate 105 moves upward. Due to the insertion and engagement of the pin 109 and the pin slot 110, the fixed slide plate 103 and the fixed bracket 102 move upward. The fixed pressure block 101 moves away from the pressing position and above it. As the fixed slide plate 103 moves upward, the top of the pin limit ring 114 at the top of the accessory 108 contacts the limit plate 137. The accessory 108 is under the action of the limit plate 137. As the lower compression spring 112 moves downward, the pin slot 115 moves downward. With the downward movement of the lower compression spring 108, the pin lever 113 moves upward out of the pin slot 115. The pin 109 moves left, disengaging from the pin slot 110 and acting on the right side of the movable track plate 105. As the movable track plate 105 continues to move upward, the fixing bar 104, along with the fixing block 101, moves left under the cooperation of the first inclined slot 116 and the first limiting post 118. Under the cooperation of the second inclined slot 117 and the second limiting post 119, since the fixed track plate 106 is fixed to the fixed frame 102, and the fixed frame 102 can only move up and down, the movable track plate 105 will also move backward, causing the fixed slide plate 103 to move backward. The fixing bar 104 and the fixing block 101 on the fixed slide plate 103 move backward, and the fixing block 101 moves to its original position. The fixing block 101 releases the safety pin Z00, and the reset safety pin Z00 can then discharge material.

[0093] 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 principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reset device for safety needle tension detection, characterized in that: It comprises a pressing and transferring assembly for resetting an inner sliding sleeve (Z05) and an outer sliding sleeve (Z09) of a safety needle (Z00) and a positioning jig for carrying the safety needle (Z00); The pressing and transferring assembly comprises a pressing frame (400), a pressing and transferring unit, a pressing and lifting seat (405), and a lifting and driving mechanism for driving the pressing and lifting seat (405) to move up and down; the pressing and transferring unit is located above the positioning mold, and the pressing and lifting seat (405) is arranged on the pressing frame (400) through the lifting and driving assembly; The pressing and transferring unit comprises a pressing and transferring push block (401), which is slidably arranged on a pressing and transferring lifting seat (405). Under the action of a transferring driving mechanism, the pressing and transferring push block (401) can act on the outer sliding sleeve (Z09) to reset the outer sliding sleeve (Z09) and the inner sliding sleeve (Z05) of the safety needle (Z00); The positioning jig comprises a positioning frame (100), a fixing assembly and a sheath transfer assembly arranged on the positioning frame (100); the positioning frame (100) is also provided with a positioning structure for positioning a safety needle (Z00); the fixing assembly can press the safety needle (Z00); and the sheath transfer assembly can clamp and transfer and reset a needle sheath (Z11) of the safety needle (Z00).

2. The reset device for safety needle tension detection according to claim 1, characterized in that: The fixing assembly comprises an assembly support portion and a fixing pressing block (101) arranged on the assembly support portion and capable of acting on 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 of the corresponding pressing position by moving in the front-back and left-right directions, and then moved to the pressing position to press the safety needle (Z00) by moving in the up-down direction; the fixed pressing block (101) in the pressing position can be moved out of the pressing position to release the safety needle (Z00) by moving in the up-down direction, and then returned to the original position by moving in the front-back and left-right directions.

3. The reset device for safety needle tension detection according to claim 2, 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).

4. The reset device for safety needle tension detection according to claim 3, characterized in that: The limit pin assembly comprises a pin rack (107), a pin (108) movably arranged on the pin rack (107) and a latch (109); the pin rack (107) is arranged on the fixed slide plate (103); a pin slot (110) is arranged on the movable track plate (105); a latch spring (111) is arranged between the latch (109) and the fixed slide plate (103); under the action of the latch spring (111), the latch (109) can act on the side of the movable track plate (105) or be inserted into the pin In the slot (110), a pin lever (113) is provided on the latch pin (109), a pin groove (115) matched with the pin lever (113) is provided at the lower part of the overhead pin (108), a pin limiting ring (114) is provided at the upper part of the overhead pin (108), an overhead spring (112) is sleeved on the overhead pin (108) between the pin limiting ring (114) and the pin frame (107), and a limiting plate (137) capable of positioning the pin limiting ring (114) is provided on the positioning frame (100).

5. The reset device for safety needle tension detection according to claim 3, characterized in that: The first linkage member comprises a first oblique slot hole (116) and a first limiting column (118) capable of moving in the first oblique slot hole (116), the first oblique slot hole (116) being arranged on the movable track plate (105), and the first limiting column (118) being arranged on the fixed bar (104); and / or the second linkage member comprises a second oblique slot hole (117) and a second limiting column (119) capable of moving in the second oblique slot hole (117), the second oblique slot hole (117) being arranged on the fixed track plate (106), and the second limiting column (119) being arranged on the movable track plate (105).

6. The reset device for safety needle tension detection according to claim 1, characterized in that: The sheath transfer assembly comprises a sheath claw frame (120), a sheath transfer driving 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 driving mechanism for driving the sheath clamping unit. The sheath claw frame (120) is arranged on the positioning frame (100) to slide forward and backward. Under the action of the sheath clamping driving mechanism, the sheath clamping unit can clamp or release the needle sheath (Z11).

7. The reset device for safety needle tension detection according to claim 6, characterized in that: The sheath clamping unit comprises 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 provided between the upper parts of the pair of sheath clamping claws (121); the sheath clamping drive mechanism comprises 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 the top block (124) is provided with a support head capable of propping up the lower parts of the pair of sheath clamping claws (121).

8. The reset device for safety needle tension detection according to any one of claims 1 to 7, characterized in that: The positioning mold further comprises a shift fork mechanism, the shift fork mechanism comprising a shift fork (132), the shift fork (132) being rotatably arranged on the positioning frame (100), one end of the shift fork (132) being provided with a first shifting notch (134) capable of driving a fixing assembly to compress a safety needle (Z00), and the other end of the shift fork (132) being provided with a second shifting notch (135) capable of driving a sheath transfer assembly to clamp a needle sheath (Z11).

9. The reset device for safety needle tension detection according to any one of claims 1 to 7, characterized in that: The pressing and transferring unit further comprises an elastic buffer component, and the pressing and transferring assembly further comprises a transferring push plate (406) slidably arranged on the pressing and lifting seat (405), and the transferring push plate (406) can move forward and backward under the action of the transferring driving mechanism, and the pressing and transferring block (401) is connected to the transferring push plate (406) through the elastic buffer component.

10. The reset device for safety needle tension detection according to claim 9, characterized in that: The elastic buffer assembly includes a press-fit connection shaft (402), a press-fit connection head (404) and a compression spring (403) arranged between the press-fit connection shaft (402) and the press-fit connection head (404); the press-fit connection head (404) is connected to the transfer push plate (406); one end of the press-fit connection shaft (402) is connected to the press-fit push block (401), and the other end can move axially in the press-fit connection head (404); the compression spring (403) is mounted on the press-fit connection shaft (402).

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