Ultrasonic welding equipment for safety injection needles

Abstract

The present invention provides an ultrasonic welding device for a safety injection needle, belonging to the technical field of medical device manufacturing, comprising a base, a turntable is arranged above the base, and the lower surface of the turntable is movably mounted on the upper surface of the base through a roller, four groups of clamping and fixing mechanisms are arranged inside the turntable, each group of the clamping and fixing mechanisms comprises a movable groove, and two movable grooves are symmetrically arranged front and back, and the two movable grooves are both opened inside the upper end of the turntable, and the clamping and fixing mechanism and the pushing mechanism are arranged, so that when the clamping and fixing mechanism moves to the top of the pushing mechanism, the pushing mechanism can quickly open the clamping and fixing mechanism, and then the needle and the needle tube can be quickly placed in the clamping and fixing mechanism for clamping and fixing, or the welded injection needle can be taken out from the clamping and fixing mechanism, so that the process of taking and placing the injection needle will not affect the welding process, thereby improving the overall welding efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of medical equipment manufacturing, in particular to an ultrasonic welding device for a safety injection needle. Background Art

[0002] Ultrasonic welding is an industrial technology that locally applies high-frequency ultrasonic vibrations to workpieces held together under pressure through an ultrasonic welding device or welding machine to produce welds. It is usually used to weld thermoplastic workpieces. The ultrasonic welding process is: adjacent or overlapping workpieces are placed on a seat or anvil, and high-frequency vibrations are guided to the interface between the workpieces using an ultrasonic welding machine; the ultrasonic welding machine includes a converter or piezoelectric transducer, an amplifier and an ultrasonic welding torch. The three elements are tuned to resonate at the same ultrasonic frequency. The converter converts electrical signals into mechanical vibrations, the amplifier changes the amplitude of the vibration, and the ultrasonic welding torch clamps the workpieces and applies ultrasonic vibrations to generate heat, which locally melts the workpiece material to form a welded joint.

[0003] A safety injection needle is a medical device designed to improve the safety of the injection process. Its main purpose is to prevent harm to the person being injected and to protect the injection operator from occupational hazards such as needlestick injuries.

[0004] When manufacturing safety injection needles, ultrasonic welding equipment is generally used to weld the injection needle and the syringe together. However, the existing ultrasonic welding equipment has low working efficiency and is cumbersome to operate. It is necessary to manually place the assembled needle and syringe at the welding point for welding. After welding is completed, the ultrasonic welding equipment needs to be stopped first, the completed object is removed, and then the new needle tube to be welded is placed on it before the welding work can continue. A lot of working time is wasted when replacing the needle tube, resulting in low overall work efficiency. In addition, it is easy to touch the needle when manually loading and unloading, which may injure the staff, which is very dangerous.

[0005] Therefore, we propose an ultrasonic welding device for a safety injection needle to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems that the existing ultrasonic welding equipment has low working efficiency and is cumbersome to operate. It is necessary to manually place the assembled needle and syringe at the welding point for welding. After welding is completed, it is necessary to stop the ultrasonic welding equipment first, remove the completed object, and then place the new needle tube to be welded before continuing the welding work. A lot of working time is wasted when replacing the needle tube, resulting in low overall work efficiency. In addition, manual operation of loading and unloading is prone to touching the needle and injuring the staff, which is a high risk. Therefore, an ultrasonic welding device for safe injection needles is proposed.

[0007] 7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said bolt has a round shank to contact with said linking rod.

[0008] The pushing mechanism includes a fixed sleeve block, and two fixed sleeve blocks are symmetrically arranged in front and back and are arranged on the upper surface of the base. Push blocks are movably installed inside the two fixed sleeve blocks through lifting springs. The upper ends of the two push blocks are inserted into the inside of the turntable and abut against the inner sides of the bottoms of the two movable blocks. Balls are rotatably installed inside the upper ends of the push blocks.

[0009] As a preferred embodiment of the present invention, the inner side of the bottom of the movable block is designed to be arc-shaped, the upper end of the push block is designed to be hemispherical, and a through groove matching the push block is provided at the inner bottom of the turntable.

[0010] As a preferred embodiment of the present invention, a driving mechanism is provided inside the base, and the driving mechanism includes a servo motor, and the servo motor is arranged at the inner bottom of the base, the power output end of the servo motor is transmission-connected with a rotating shaft, the circumferential surface of the rotating shaft is provided with an intermittent gear, the upper end of the intermittent gear is meshingly connected with a driven spur gear, a worm one is provided in the middle of the driven spur gear, the left side of the worm one is meshingly connected with a worm wheel one, a rotating rod is provided in the middle of the worm wheel one, and the upper end of the rotating rod passes through the base and is connected to the middle of the lower surface of the turntable.

[0011] As a preferred embodiment of the present invention, a moving mechanism is provided on the rear side of the rotating rod, and the moving mechanism includes a bevel gear 1, and the bevel gear 1 is arranged on the circumferential surface of the rotating rod, the rear side of the bevel gear 1 is meshingly connected with the bevel gear 2, and the rear side of the bevel gear 2 is provided with a gearbox, and the gearbox is arranged inside the base through a mounting seat, and a worm 2 is provided at the rear end of the gearbox, and the upper end of the worm 2 is meshingly connected with a worm wheel 2, a bidirectional lead screw is provided in the middle of the worm wheel 2, and the right end of the bidirectional lead screw is rotatably installed on the right inner wall of the base, the circumferential surface of the bidirectional lead screw is movably connected with a moving seat through a sliding nut, the upper surface of the moving seat passes through the base and is provided with an ultrasonic welding machine, and the welding head at the front end of the ultrasonic welding machine is located on the right side of the clamping block on the right side of the rear end.

[0012] As a preferred embodiment of the present invention, a movable groove is opened on the rear side of the upper surface of the base, the upper end of the movable seat is arranged inside the movable groove, the left end of the bidirectional screw is rotatably connected to a fixed block, and the fixed block is arranged on the rear inner wall of the base.

[0013] As a preferred embodiment of the present invention, sliding grooves are provided on both sides of the movable groove, the two ends of the sliding rod are respectively arranged inside the two sliding grooves, a placing platform is provided between every two movable grooves, and the four placing platforms are all arranged on the upper surface of the turntable.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) By setting the clamping and fixing mechanism and the pushing mechanism, when the clamping and fixing mechanism moves to the top of the pushing mechanism, the pushing mechanism can quickly open the clamping and fixing mechanism, and then the needle and the needle tube can be quickly placed in the clamping and fixing mechanism for clamping and fixing, or the welded injection needle can be taken out from the clamping and fixing mechanism, so that the process of taking and placing the injection needle will not affect the welding process, thereby improving the overall welding efficiency;

[0016] (2) By setting up a driving mechanism and a moving mechanism, the turntable can be driven to rotate intermittently, and the ultrasonic welding machine in the moving mechanism can be synchronously moved horizontally left and right, so that the ultrasonic welding machine on the moving mechanism will not affect the rotation of the turntable. After the turntable rotates, the ultrasonic welding machine can be moved back to the initial position and the welding work can be continued. At the same time, the turntable can adjust the position of the four groups of clamping and fixing mechanisms above it at regular intervals, which is convenient for the loading, welding and unloading of the injection needle, so that the welding work can be carried out continuously without stopping for intermittent work, and the work efficiency is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a first front cutaway perspective view of the present invention;

[0020] Figure 3 It is a second front cutaway perspective view of the present invention;

[0021] Figure 4 It is a left cutaway perspective view of the present invention;

[0022] Figure 5 For the present invention Figure 4 A magnified view of the structure at center A;

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the driving mechanism of the present invention;

[0024] Figure 7 It is a left-side cutaway perspective view of a turntable of the present invention.

[0025] In the figure: 1. base; 2. driving mechanism; 201. servo motor; 202. rotating shaft; 203. intermittent gear; 204. driven spur gear; 205. worm gear 1; 206. worm gear 1; 207. rotating rod; 3. moving mechanism; 301. bevel gear 1; 302. bevel gear 2; 303. gearbox; 304. worm gear 2; 305. worm gear 2; 306. bidirectional screw; 307. moving seat; 308. ultrasonic welding machine; 4. clamping Fixing mechanism; 401, movable groove; 402, sliding rod; 403, annular fixing block; 404, tension spring; 405, movable block; 406, clamping block; 407, compression spring; 408, telescopic push plate; 409, telescopic spring; 5, pushing mechanism; 501, fixed sleeve block; 502, lifting spring; 503, push block; 504, ball bearing; 6, placing table; 7, movable groove; 8, roller; 9, turntable; 10, through groove; 11, slide groove. DETAILED DESCRIPTION

[0026] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Example:

[0028] See also Figure 1 - Figure 7 As shown, an ultrasonic welding device for a safety injection needle comprises a base 1, a turntable 9 is arranged above the base 1, and the lower surface of the turntable 9 is movably mounted on the upper surface of the base 1 through a roller 8, the roller 8 can support the edge of the turntable 9 without affecting the rotation of the turntable 9, thereby improving the stability of the turntable 9, a driving mechanism 2 is arranged inside the base 1, the driving mechanism 2 comprises a servo motor 201, and the servo motor 201 is arranged at the inner bottom of the base 1, the power output end of the servo motor 201 is connected to a rotating shaft 202 through a coupling transmission, the front end of the rotating shaft 202 is rotatably mounted on the inner wall of the base 1, the circumferential surface of the rotating shaft 202 is provided with an intermittent gear 203, and the intermittent gear 203 is arranged at the inner surface of the rotating shaft 202. The upper end of the rest gear 203 is meshedly connected with a driven spur gear 204, and a worm 205 is arranged in the middle of the driven spur gear 204. The front and rear ends of the worm 205 are rotatably connected with the inner walls of the front and rear sides of the base 1 respectively, which can limit the support of the worm 205 without affecting the rotation of the worm 205. The left side of the worm 205 is meshedly connected with a worm wheel 206, and a rotating rod 207 is arranged in the middle of the worm wheel 206. The upper end of the rotating rod 207 passes through the base 1 and is connected to the middle of the lower surface of the turntable 9. The upper and lower ends of the rotating rod 207 are rotatably connected with the inner top wall and the inner bottom wall of the base 1 respectively, which can limit the support of the rotating rod 207 without affecting the rotation of the rotating rod 207.

[0029] It should be noted that each time the servo motor 201 drives the intermittent gear 203 to rotate one circle, the intermittent gear 203 will only drive the driven spur gear 204 to rotate a quarter of a circle, so that the turntable 9 will only rotate ninety degrees each time it rotates once, and the arrangement of the worm 205 and the worm wheel 206 can prevent the turntable 9 from self-rotating due to the vibration generated when the device is working because of the self-locking effect of the worm wheel when the intermittent gear 203 is not engaged with the driven spur gear 204.

[0030] Four groups of clamping and fixing mechanisms 4 are arranged inside the turntable 9, each group of clamping and fixing mechanisms 4 includes a movable groove 401, and two movable grooves 401 are symmetrically arranged front and back, the two movable grooves 401 are both opened inside the upper end of the turntable 9, and sliding rods 402 are slidably installed inside the two movable grooves 401, and annular fixing blocks 403 are arranged on the circumferential surface in the middle of the two sliding rods 402, and tensioning springs 404 are arranged on the left and right sides of the two annular fixing blocks 403, and the other ends of the four tensioning springs 404 are respectively connected with movable blocks 405, and the movable blocks 405 are slidably installed on the circumferential surface of the sliding rod 402, and the tensioning springs 404 can pull the movable blocks 405 toward the direction of the annular fixing blocks 403, and then the two movable blocks 405 arranged on the surface of the sliding rod 402 are pulled without being affected by other objects or forces. Under the action of the tightening spring 404, they fit each other, and the upper surfaces of the four movable blocks 405 are each provided with a clamping block 406. The interiors of the two movable grooves 401 are movably installed with a telescopic push plate 408 through a compression spring 407. The other sides of the two telescopic push plates 408 are respectively abutted against the corresponding movable blocks 405. The interiors of the telescopic push plates 408 are provided with a telescopic spring 409. A placement table 6 is provided between every two movable grooves 401, and the four placement tables 6 are all provided on the upper surface of the turntable 9. The setting of the compression spring 407 can push the movable block 405 and the clamping block 406 toward the placement table 6 through the telescopic push plate 408, and then with the cooperation of the two groups of telescopic springs 409, the needle and the syringe clamped by the two groups of clamping blocks 406 are subjected to a force of mutual squeezing, thereby making the connection between the needle and the syringe more tightly combined;

[0031] It should be noted that the two rear clamping blocks 406 are internally provided with clamping grooves matching the syringe, and the two front clamping blocks 406 are internally provided with clamping grooves matching the needle, so that the clamping blocks 406 can clamp the needle and the syringe more stably, and the upper surface of the placement table 6 is provided with an arc groove matching the outer diameter of the syringe, which provides a placement space for the syringe and facilitates the subsequent clamping and fixing of the injection needle.

[0032] A pushing mechanism 5 is provided below the left and right groups of clamping and fixing mechanisms 4. The pushing mechanism 5 includes a fixed sleeve block 501, and two fixed sleeve blocks 501 are symmetrically provided front and back and are arranged on the upper surface of the base 1. The fixed sleeve block 501 is not on the same circumferential path as the roller 8, that is, when the turntable 9 drives the roller 8 to rotate, the roller 8 will not collide with the fixed sleeve block 501. Push blocks 503 are movably installed inside the two fixed sleeve blocks 501 through the jacking spring 502. The two push blocks The upper ends of 503 are inserted into the interior of the turntable 9 and abut against the inner sides of the bottoms of the two movable blocks 405. A ball 504 is rotatably installed inside the upper end of the push block 503. The arrangement of the ball 504 enables the upper end of the push block 503 to contact the lower surface of the turntable 9 through the ball 504 when the upper end of the push block 503 is not inserted into the interior of the turntable 9, thereby reducing the friction between the upper end of the push block 503 and the lower surface of the turntable 9 and increasing the service life of the push block 503 and the turntable 9.

[0033] It should be noted that the inner side of the bottom of the movable block 405 is designed in an arc shape, the upper end of the push block 503 is designed in a hemispherical shape, and a through groove 10 matching the push block 503 is provided at the bottom of the turntable 9. The arc-shaped design of the bottom of the movable block 405 enables the upper end of the push block 503 to smoothly push the movable block 405 outward after entering the bottom of the turntable 9, so that the distance between the two corresponding movable blocks 405 can be increased, which makes it easier to put in a new injection needle or take out the welded injection needle from the middle of the two movable blocks 405, which makes it easier to load and unload the injection needle, and the push block 503 can be pushed outward smoothly after entering the bottom of the turntable 9. The design of the hemispherical body at the upper end of the block 503 and the setting of the through groove 10 at the bottom of the turntable 9 enable the push block 503 to smoothly pass through the through groove 10 and enter the inner bottom of the turntable 9, thereby separating the movable block 405, which is convenient for loading and unloading the injection needle. It is also convenient that after the turntable 9 rotates, the lateral rotational force of the turntable 9 can push the push block 503 out from the bottom of the turntable 9, so that the push block 503 can be moved out from the inside of the turntable 9 and moved into the inside of the fixed sleeve block 501 without the need for additional external force, so that the push block 503 will not affect the rotation of the turntable 9.

[0034] A moving mechanism 3 is provided on the rear side of the rotating rod 207, and the moving mechanism 3 includes a bevel gear 1 301, and the bevel gear 1 301 is arranged on the circumferential surface of the rotating rod 207, the rear side of the bevel gear 1 301 is meshedly connected with a bevel gear 2 302, and a gearbox 303 is provided on the rear side of the bevel gear 2 302, the bevel gear 2 302 is arranged at the input end of the front end of the gearbox 303, and the gearbox 303 is arranged inside the base 1 through a mounting seat, and a worm 2 304 is provided at the rear end of the gearbox 303, and the rear end of the worm 2 304 is rotatably installed on the rear inner wall of the base 1, which can limit the support of the worm 2 304 without affecting the rotation of the worm 2 304, and the upper end of the worm 2 304 is meshedly connected with a worm wheel 2 305, a bidirectional lead screw 306 is arranged in the middle of the worm gear 305, and the right end of the bidirectional lead screw 306 is rotatably mounted on the right inner wall of the base 1, and the circumferential surface of the bidirectional lead screw 306 is movably connected with a movable seat 307 through a sliding nut, and the upper surface of the movable seat 307 passes through the base 1 and is provided with an ultrasonic welding machine 308, and the welding head at the front end of the ultrasonic welding machine 308 is located on the right side of the clamping block 406 on the right side of the rear end. The arrangement of the worm 304 and the worm gear 305 can self-lock the bidirectional lead screw 306, thereby avoiding the vibration generated when the ultrasonic welding machine 308 is working, which causes the bidirectional lead screw 306 to rotate, so that the movable seat 307 moves, thereby improving the welding effect of the ultrasonic welding machine 308;

[0035] It should be noted that, due to the setting of the gearbox 303, when the bevel gear 1 301 drives the bevel gear 2 302 to rotate, the speed regulation of the gearbox 303 can drive the worm 2 304 to rotate faster, and then the worm 2 304 drives the worm wheel 2 305 and the bidirectional lead screw 306 to rotate faster, so that when the turntable 9 rotates ninety degrees, the moving seat 307 on the surface of the bidirectional lead screw 306 can move horizontally back and forth on the bidirectional lead screw 306, avoiding the risk of collision with the ultrasonic welding machine 308 when the turntable 9 drives the clamping and fixing mechanism 4 to move, and also enables the ultrasonic welding machine 308 to contact the right end of the injection needle clamped on the next group of clamping and fixing mechanisms 4, so that the next welding work can be carried out smoothly.

[0036] A movable groove 7 is provided on the rear side of the upper surface of the base 1, and the upper end of the movable seat 307 is arranged inside the movable groove 7. The setting of the movable groove 7 provides a movable space for the movable seat 307, so that the movable seat 307 can smoothly move horizontally left and right inside the movable groove 7, and then smoothly drive the ultrasonic welding machine 308 to move horizontally left and right. The left end of the bidirectional lead screw 306 is rotatably connected to a fixed block, and the fixed block is arranged on the inner wall of the rear side of the base 1. The setting of the fixed block can limit the left end of the bidirectional lead screw 306. The stability of the bidirectional lead screw 306 is improved without affecting the rotation of the bidirectional lead screw 306. Slide grooves 11 are provided on the left and right sides of the movable groove 401. The two ends of the sliding rod 402 are respectively arranged inside the two slide grooves 11. The setting of the slide grooves 11 provides a movable space for the sliding rod 402, so that the telescopic push plate 408 can smoothly push the sliding rod 402 to move horizontally inside the slide groove 11, and then smoothly squeeze the needle and the syringe, thereby avoiding loosening of the connection between the needle and the syringe, which affects the subsequent welding quality.

[0037] When the present invention is used, firstly, the assembled injection needle is placed on the upper surface of the left placement table 6 manually or by setting a manipulator capable of loading and unloading on the left and right sides of the turntable 9, and the needle head is located in the middle of the two clamping blocks 406 at the left rear end, and the syringe is located in the middle of the two clamping blocks 406 at the left front end. At this time, because the left bottom push block 503 is inserted upward into the bottom of the turntable 9, the upper end of the push block 503 pushes the movable blocks 405 on both sides thereof to both sides, so that there is a certain interval between the two corresponding clamping blocks 406, and then the needle head and syringe can be smoothly put in from top to bottom;

[0038] Then, the servo motor 201 is started, and the servo motor 201 drives the rotating shaft 202 and the intermittent gear 203 to rotate slowly. When the intermittent gear 203 rotates to mesh with the driven spur gear 204, it can drive the driven spur gear 204 and the worm 205 to rotate. The rotation of the worm 205 drives the worm wheel 206, the rotating rod 207 and the bevel gear 301 to rotate. The rotation of the rotating rod 207 drives the turntable 9 to rotate. When the intermittent gear 203 and the driven spur gear 204 end to mesh, it can drive the turntable 9 to rotate ninety degrees, so that the clamping and fixing mechanism 4 on which the injection needle is placed just above the turntable 9 rotates to the rear end, and here, when the turntable 9 drives the left-end clamping and fixing mechanism 4 to move to the rear side, it will press the push block 503 downward. The movable blocks 405 on the left and right sides of the clamping mechanism 4 are inserted into the interior of the fixed sleeve block 501, so that the movable block 405 inside the left end clamping and fixing mechanism 4 loses the abutting effect of the push block 503, and the movable blocks 405 on the left and right sides are close to each other under the action of the tension spring 404, and then the front and rear two groups of movable blocks 405 respectively clamp and fix the needle and the needle, and at the same time, the elastic force of the compression springs 407 inside the two movable grooves 401 is also released, so that the two compression springs 407 push the two telescopic push plates 408 respectively, and then the two telescopic push plates 408 push their corresponding movable blocks 405 respectively, so that the front and rear two groups of movable blocks 405 are subjected to the force of mutual squeezing, and then the connection between the needle and the syringe is more closely fitted, so that the subsequent welding effect is better;

[0039] At the same time, the rotation of bevel gear 1 301 drives bevel gear 2 302 to rotate, and the gearbox 303 drives worm gear 2 304 to rotate after speed change, so that worm gear 2 304 drives worm wheel 2 305 and bidirectional lead screw 306 to rotate, and then the moving seat 307 can move horizontally on the bidirectional lead screw 306. When the turntable 9 rotates 90 degrees, the moving seat 307 moves back and forth on the bidirectional lead screw 306, so that when the turntable 9 just starts to rotate, the moving seat 307 can synchronously drive the ultrasonic welding machine 308 to move horizontally to the right, so as to avoid collision and damage between the ultrasonic welding machine 308 and the clamping and fixing mechanism 4 when the turntable 9 drives the clamping and fixing mechanism 4 on the left side. When the turntable 9 drives the clamping and fixing mechanism 4 on the left side to move to the rear end, the moving seat 307 drives the ultrasonic welding machine 308 to move back to the initial position to the left, so that the welding head of the ultrasonic welding machine 308 contacts the right end of the syringe;

[0040] At this time, because the teeth of the intermittent gear 203 are no longer meshed with the driven spur gear 204, even if the servo motor 201 is still driving the intermittent gear 203 to rotate, the driven spur gear 204 will not rotate. At this time, the ultrasonic welding machine 308 works to perform ultrasonic welding on the injection needle at the rear end, and at the same time, the new injection needle to be welded is placed inside the clamping and fixing mechanism 4 at the left end, and the injection needle welded inside the clamping and fixing mechanism 4 at the right end is taken out, so that the injection needle can be put in, welded and taken out at the same time without any impact.

[0041] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An ultrasonic welding device for a safety injection needle, comprising a base (1), characterized in that: A turntable (9) is arranged above the base (1), and the lower surface of the turntable (9) is movably mounted on the upper surface of the base (1) via a roller (8). Four groups of clamping and fixing mechanisms (4) are arranged inside the turntable (9), and each group of the clamping and fixing mechanisms (4) comprises a movable groove (401), and two movable grooves (401) are symmetrically arranged front and back. The two movable grooves (401) are both opened inside the upper end of the turntable (9), and sliding rods (402) are slidably mounted inside the two movable grooves (401). An annular fixing block (403) is arranged on the circumferential surface in the middle of the two sliding rods (402), and the left and right sides of the two annular fixing blocks (403) are both arranged. There is a tension spring (404), the other ends of the four tension springs (404) are respectively connected to a movable block (405), and the movable block (405) is slidably installed on the circumferential surface of the sliding rod (402), and the upper surfaces of the four movable blocks (405) are respectively provided with a clamping block (406), and the insides of the two movable grooves (401) are movably installed with a telescopic push plate (408) through a compression spring (407), and the other sides of the two telescopic push plates (408) are respectively in contact with the corresponding movable blocks (405), and the inside of the telescopic push plates (408) is provided with a telescopic spring (409), and a pushing mechanism (5) is provided below the left and right groups of the clamping and fixing mechanisms (4); The pushing mechanism (5) comprises a fixed sleeve block (501), and two fixed sleeve blocks (501) are symmetrically arranged in front and back and arranged on the upper surface of the base (1). Push blocks (503) are movably installed inside the two fixed sleeve blocks (501) through lifting springs (502). The upper ends of the two push blocks (503) are inserted into the inside of the rotating disk (9) and abut against the inner sides of the bottoms of the two movable blocks (405). Balls (504) are rotatably installed inside the upper ends of the push blocks (503).

2. The ultrasonic welding device for safety injection needles according to claim 1, characterized in that: The inner side of the bottom of the movable block (405) is designed to be arc-shaped, the upper end of the push block (503) is designed to be hemispherical, and the inner bottom of the rotating disk (9) is provided with a through slot (10) matching the push block (503).

3. The ultrasonic welding device for safety injection needles according to claim 1, characterized in that: A driving mechanism (2) is arranged inside the base (1), the driving mechanism (2) comprising a servo motor (201), and the servo motor (201) is arranged at the inner bottom of the base (1), the power output end of the servo motor (201) is drivingly connected to a rotating shaft (202), an intermittent gear (203) is arranged on the circumferential surface of the rotating shaft (202), the upper end of the intermittent gear (203) is meshingly connected to a driven spur gear (204), a worm gear (205) is arranged in the middle of the driven spur gear (204), the left side of the worm gear (205) is meshingly connected to a worm wheel (206), a rotating rod (207) is arranged in the middle of the worm wheel (206), and the upper end of the rotating rod (207) passes through the base (1) and is connected to the middle of the lower surface of the rotating disk (9).

4. The ultrasonic welding device for safety injection needles according to claim 3, characterized in that: A moving mechanism (3) is arranged at the rear side of the rotating rod (207), the moving mechanism (3) comprising a bevel gear 1 (301), and the bevel gear 1 (301) is arranged on the circumferential surface of the rotating rod (207), the rear side of the bevel gear 1 (301) is meshingly connected with a bevel gear 2 (302), the rear side of the bevel gear 2 (302) is arranged with a gearbox (303), and the gearbox (303) is arranged inside the base (1) through a mounting seat, and the rear end of the gearbox (303) is arranged with a worm gear 2 (304), and the worm gear 2 (304) is arranged at the rear end of the gearbox (303). The upper end of the worm gear (304) is meshedly connected with a worm gear (305), a bidirectional lead screw (306) is arranged in the middle of the worm gear (305), and the right end of the bidirectional lead screw (306) is rotatably mounted on the right inner wall of the base (1), the circumferential surface of the bidirectional lead screw (306) is movably connected with a movable seat (307) via a sliding nut, the upper surface of the movable seat (307) passes through the base (1) and is provided with an ultrasonic welding machine (308), and the welding head at the front end of the ultrasonic welding machine (308) is located on the right side of the clamping block (406) on the right side of the rear end.

5. The ultrasonic welding device for safety injection needles according to claim 4, characterized in that: A movable groove (7) is provided on the rear side of the upper surface of the base (1); the upper end of the movable seat (307) is arranged inside the movable groove (7); the left end of the bidirectional lead screw (306) is rotatably connected to a fixed block, and the fixed block is arranged on the rear inner wall of the base (1).

6. The ultrasonic welding device for safety injection needles according to claim 1, characterized in that: Slide grooves (11) are provided on both left and right sides of the movable groove (401), and two ends of the sliding rod (402) are respectively arranged inside the two slide grooves (11). A placement platform (6) is arranged between every two movable grooves (401), and the four placement platforms (6) are all arranged on the upper surface of the turntable (9).

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