CN112618873A

CN112618873A - Medicine adding and needle replacing equipment of veterinary injector

Info

Publication number: CN112618873A
Application number: CN202110044681.1A
Authority: CN
Inventors: 熊霞
Original assignee: Shanghai Zhanghuo Pet Products Co ltd
Current assignee: Shanghai Zhanghuo Pet Products Co ltd
Priority date: 2021-01-13
Filing date: 2021-01-13
Publication date: 2021-04-09

Abstract

The invention relates to the related field of medicine injection, in particular to medicine adding and needle changing equipment of a veterinary injector, which comprises a machine body and a working cavity which is arranged in the machine body and is opened upwards, wherein a needle changing device is arranged in the working cavity, the needle changing device comprises rotating rods which are symmetrically hinged on the left end wall and the right end wall of the working cavity in a left-right mode, first cantilevers are symmetrically and fixedly arranged on the outer surface of the rotating rods, and the first cantilevers on the upper sides are connected with the end walls of the working cavity through springs. Has certain safety and practicability.

Description

Medicine adding and needle replacing equipment of veterinary injector

Technical Field

The invention relates to the field related to medicine injection, in particular to medicine adding and needle replacing equipment of a veterinary injector.

Background

In the process of cultivation, the livestock needs to be periodically injected with medicines, so that various infectious diseases can be prevented, the edible safety of the livestock is effectively improved, the economic loss caused by the death of the large-scale livestock can be avoided, and in the process of medicine injection, the needle head needs to be continuously replaced and the medicines need to be supplemented, so that the operation is very complicated, and therefore, the medicine adding and needle changing equipment of the veterinary injector needs to be designed, and the existing problems are solved.

Disclosure of Invention

The invention aims to provide medicine adding and needle replacing equipment of a veterinary injector, which can overcome the defects in the prior art, so that the practicability of the equipment is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the medicine adding and needle changing equipment of the veterinary injector comprises an injector body and a working cavity which is arranged in the injector body and is provided with an upward opening, wherein a needle changing device is arranged in the working cavity, the needle changing device comprises rotating rods which are symmetrically hinged on the left end wall and the right end wall of the working cavity in a bilateral symmetry mode, first cantilevers are symmetrically and fixedly arranged on the outer surface of the rotating rods, the first cantilevers on the upper side are connected with the end wall of the working cavity through springs, first magnets are fixedly arranged on the surfaces of the first cantilevers on the lower side, first electromagnets which are positioned on the lower side of the rotating rods are fixedly arranged on the left end wall and the right end wall of the working cavity, when the first magnets are in contact with the first electromagnets due to the rotation of the rotating rods, the first electromagnets can be controlled to attract the first magnets so that the rotating rods can be fixed, and a, the end face of the first spring rod, which is positioned in the working cavity, is fixedly provided with a clamping plate, the left clamping plate and the right clamping plate can be matched together to clamp a needle cylinder, the needle cylinder is placed between the left clamping plate and the right clamping plate in the working cavity and is pressed downwards, so that the rotating rod is driven to rotate, the first electromagnet is enabled to attract the first magnet, so that the clamping plate can clamp the needle cylinder, and the subsequent operation of a needle head at the bottom end of the needle cylinder is facilitated, a transmission cavity is arranged in the machine body and is positioned at the lower side of the working cavity, the top wall of the transmission cavity is rotationally provided with a first rotating shaft extending to the top wall of the working cavity, the bottom end of the first rotating shaft is fixedly provided with a first bevel gear positioned in the transmission cavity, the outer surface of the first rotating shaft is provided with a first spline shaft positioned in the working cavity in a vertical sliding, second cantilevers are fixedly arranged on the outer surface of the first sleeve in a bilateral symmetry mode, lifting rods are fixedly arranged on the bottom wall of the second cantilever, second sleeves which cover the lifting rods are fixedly arranged on the bottom wall of the working cavity in a bilateral symmetry mode, second electromagnets are fixedly arranged in the second sleeves, second magnets which can be attracted or repelled with the second electromagnets are fixedly arranged at the bottom ends of the lifting rods, and clamping arms located on the upper side of the first sleeves are fixedly arranged on the outer surface of the first spline shaft; a lifting groove positioned between the transmission device and the working cavity is formed in the machine body, a medicine adding device is arranged in the lifting groove, and the medicine adding device is used for adding liquid medicine into the needle cylinder; the inside transmission that is located of organism be provided with of transmission intracavity, transmission does the needle changing device with charge device transmission power.

Further, the needle changing device also comprises a first piston cavity arranged in the clamping arm, a piston rod extending to the outside of the left side of the clamping arm is arranged in the first piston cavity in a left-right sliding manner, a first clamping block positioned on the left side of the clamping arm is fixedly arranged at the left end of the piston rod, a supporting plate is fixedly arranged at the rear end wall of the clamping arm, a limiting plate is arranged in the supporting plate in a left-right sliding manner, a fixing rod positioned on the left side of the first clamping block is fixedly arranged at the left end of the limiting plate, a second clamping block is fixedly arranged at the end wall of the fixing rod close to the first clamping block, when the needle cylinder is inserted downwards, the needle head just falls between the first clamping block and the second clamping block, a second piston cavity positioned on the right side of the supporting plate is arranged in the clamping arm, and a sliding rod communicated with the right end wall of the piston rod is arranged at, the fixed dead lever right side wall is provided with fixedly and runs through the backup pad with the second piston chamber extends to the left slide bar of second piston chamber, the slide bar external surface is fixed and is provided with the piston plate that is located the second piston intracavity, the slide bar right-hand member is fixed and is provided with the third magnet that is located the second piston chamber right side, the fixed third electro-magnet that is provided with of centre gripping arm right-hand member wall can with third magnet actuation or repulsion, the third electro-magnet with when the third magnet is repulsive each other, the third magnet drives the slide bar moves to the right, thereby drives the piston plate moves to the right, thereby makes the air in the second piston intracavity pass through the slide bar flows into first piston intracavity and promotes the piston rod moves to the left, thereby makes first grip block with the second grip block is close to each other simultaneously and presss from both sides the syringe needle.

Furthermore, the needle changing device also comprises a needle head cavity which is arranged in the machine body and positioned on the right side of the working cavity, baffle plates are fixedly arranged on the inner wall of the needle head cavity in a bilateral symmetry manner, the baffle plates are loaded with the standby needle heads, an adding port for adding the needle heads is arranged on the top wall of the needle head cavity, a spring-connected push plate is arranged on the rear side end wall of the needle head cavity, the push plate always pushes the needle heads towards the front side, an opening communicated with the working cavity is arranged at the front end of the bottom wall of the needle head cavity, a spring clamping block connected by a spring is arranged on the front side end wall of the needle head cavity, the needle heads are clamped by the spring clamping block so that the needle heads cannot fall down, support arms which are positioned on the left side and the right side of the opening at the lower end of the needle head cavity are fixedly arranged, the upper end of the second spring rod is connected with the front end of the spring clamping block through a pull wire, a clamping block is fixedly arranged at the bottom end of the second spring rod, the needle head falls from an opening and is clamped and clamped by the clamping block, when the clamping arm rotates to the lower side of the supporting arm and clamps the needle head through the first clamping block and the second clamping block and is pulled downwards, the needle head is taken down and the second spring rod is pulled to move downwards, so that the spring clamping block is pulled to move forwards, and the next needle head falls from the opening and is clamped by the clamping block again; the needle changing device further comprises a collecting cavity which is arranged in the machine body and located on the front side of the transmission cavity, the top of the collecting cavity is communicated with the bottom wall of the working cavity, and an openable cavity door is arranged at the front end of the collecting cavity.

Further, the medicine adding device comprises sliders which are arranged on the left side wall and the right side wall of the lifting groove in an up-and-down sliding manner, a medicine adding barrel which is positioned in the lifting groove and can slide up and down is fixedly arranged between the left slider and the right slider, the bottom wall of the lifting groove is rotatably provided with a second rotating shaft which extends into the transmission cavity, the bottom end of the second rotating shaft is fixedly provided with a second bevel gear which is positioned in the transmission cavity, the outer surface of the upper end of the second rotating shaft is inserted into the medicine adding barrel and is matched with the medicine adding barrel, the medicine adding barrel can be driven to move up and down when the second rotating shaft rotates, the top end of the medicine adding barrel is provided with a matching cavity which extends downwards, the inner part of the matching cavity is provided with a spring block in an up-and-down sliding manner, the spring block is, the medicine adding barrel is internally provided with a connecting cavity which is positioned at the lower side of the matching cavity and communicated with the matching cavity, a sealing plate which is connected with a spring is arranged in the connecting cavity, the sealing plate is blocked under the action of the spring, the connecting cavity is communicated with a through hole in the matching cavity, the spring block moves down to drive the extrusion block to move down, so that the extrusion block can press the sealing plate down, the connecting cavity is communicated with the matching cavity, a liquid adding pipe is fixedly arranged on the right end wall of the machine body, the other end of the liquid adding pipe is communicated with the bottom wall of the connecting cavity, and liquid medicine enters the connecting cavity through the liquid adding pipe.

Further, the transmission device comprises a motor fixedly arranged at the rear side of the transmission cavity, an output shaft of the motor extends forwards into the transmission cavity, an incomplete gear is fixedly arranged on the outer surface of the output shaft, the incomplete gear can be intermittently meshed with the first bevel gear, a third rotating shaft is rotatably arranged on the left end wall of the transmission cavity, a third bevel gear capable of being meshed with the incomplete gear is fixedly arranged at the right end of the third rotating shaft, a second spline shaft is arranged on the outer surface of the third rotating shaft in a spline fit manner, a fourth bevel gear capable of being meshed with the second bevel gear is fixedly arranged at the left end of the second spline shaft, a fifth bevel gear positioned at the left side of the fourth bevel gear is fixedly arranged on the outer surface of the second spline shaft, the fifth bevel gear can be meshed with the second bevel gear, and an air cylinder positioned at the left side of the transmission cavity is arranged in, the air cylinder is internally provided with an air rod which extends into the transmission cavity and is in contact with the second spline shaft in a left-right sliding mode, and the air rod can drive the second spline shaft to move left and right.

The invention has the beneficial effects that: the medicine adding and needle changing equipment for the veterinary injector provided by the invention can realize the automatic needle head changing and liquid medicine adding work in the needle cylinder in the process of preventing diseases by injecting medicines into poultry, saves a large amount of changing time, can avoid the contact of the needle head by people, reduces the possibility of disease infection, can be applied to a large amount of injection operation, and has certain safety and practicability.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic overall structure diagram of the medicine adding and needle changing device of the veterinary injector.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

FIG. 3 is a schematic diagram of B-B in FIG. 1.

Fig. 4 is a schematic view of the structure of C-C in fig. 1.

Fig. 5 is a schematic diagram of the structure of D-D in fig. 1.

Fig. 6 is a schematic view of a partially enlarged structure of E in fig. 1.

Fig. 7 is a partially enlarged structural view of F in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-7, wherein for ease of description the orientations described below are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

With reference to fig. 1-7, a medicine adding and needle changing device for a veterinary syringe comprises a syringe body 10 and a working chamber 12 arranged in the syringe body 10 and having an upward opening, wherein a needle changing device 81 is arranged in the working chamber 12, the needle changing device 81 comprises a rotating rod 16 which is symmetrically and hinged to the left end wall and the right end wall of the working chamber 12, a first cantilever 17 is symmetrically and fixedly arranged on the outer surface of the rotating rod 16, the upper first cantilever 17 is connected with the end wall of the working chamber 12 through a spring, a first magnet 19 is fixedly arranged on the surface of the first cantilever 17 on the lower side of the working chamber 12, a first electromagnet 20 positioned on the lower side of the rotating rod 16 is fixedly arranged on the left end wall and the right end wall of the working chamber 12, the rotating rod 16 rotates to make the first magnet 19 contact with the first electromagnet 20, so that the first electromagnet 20 attracts the first magnet 19 to fix the rotating rod 16, the inside first spring pole 18 that is provided with through spring coupling that slides of dwang 16, the terminal surface that first spring pole 18 is located in working chamber 12 is fixed to be provided with grip block 15, and two about the grip block 15 can cooperate jointly to press from both sides tight syringe 13, will the syringe 13 place two about in working chamber 12 between the grip block 15 and push down to drive dwang 16 rotates, makes simultaneously first electro-magnet 20 actuation first magnet 19 makes grip block 15 can press from both sides tight syringe 13, so that follow-up to the syringe 14 of syringe 13 bottom operate, the inside transmission chamber 45 that is located working chamber 12 downside that is provided with of organism 10, transmission chamber 45 roof rotates to be provided with the first pivot 21 that extends to working chamber 12 roof, first pivot 21 bottom mounting is provided with the first bevel gear 48 that is located in transmission chamber 45, the outer surface of the first rotating shaft 21 is provided with a first spline shaft 22 positioned in the working cavity 12 in a vertical sliding manner, the outer surface of the first spline shaft 22 is provided with a first sleeve 23 in a rotating manner, the outer surface of the first sleeve 23 is fixedly provided with second cantilevers 24 in a bilateral symmetry manner, the bottom wall of the second cantilevers 24 is fixedly provided with lifting rods 27, the bottom wall of the working cavity 12 is fixedly provided with a second sleeve 28 covering each lifting rod 27 in a bilateral symmetry manner, a second electromagnet 30 is fixedly arranged in the second sleeve 28, the bottom end of each lifting rod 27 is fixedly provided with a second magnet 31 capable of attracting or repelling the second electromagnet 30, and the outer surface of the first spline shaft 22 is fixedly provided with a clamping arm 32 positioned on the upper side of the first sleeve 23; a lifting groove 57 is arranged in the machine body 10 and positioned between the transmission device 83 and the working cavity 12, a medicine adding device 82 is arranged in the lifting groove 57, and the medicine adding device 82 is used for adding liquid medicine into the needle cylinder 13; the inside of the machine body 10 is provided with a transmission device 83 located in the transmission cavity 45, and the transmission device 83 transmits power to the needle changing device 81 and the medicine adding device 82.

Beneficially, the needle changing device 81 further comprises a first piston cavity 38 disposed in the clamping arm 32, a piston rod 39 extending leftwards to the outside of the left side of the clamping arm 32 is disposed inside the first piston cavity 38 in a sliding manner, a first clamping block 40 located on the left side of the clamping arm 32 is fixedly disposed at the left end of the piston rod 39, a supporting plate 43 is fixedly disposed at the rear end wall of the clamping arm 32, a limiting plate 44 is disposed inside the supporting plate 43 in a sliding manner leftwards and rightwards, a fixing rod 42 located on the left side of the first clamping block 40 is fixedly disposed at the left end of the limiting plate 44, a second clamping block 41 is fixedly disposed at the end wall of the first clamping block 40 close to the fixing rod 42, when the needle cylinder 13 is inserted downwards, the needle 14 just falls between the first clamping block 40 and the second clamping block 41, a second piston cavity 35 located on the right side of the supporting plate 43 is disposed inside the clamping arm, a slide bar 37 communicated with the right end wall of the piston rod 39 is arranged on the front end wall of the second piston cavity 35, a slide bar 37 penetrating through the supporting plate 43 and the second piston cavity 35 and extending to the left side of the second piston cavity 35 is fixedly arranged on the right end wall of the fixed rod 42, a piston plate 36 positioned in the second piston cavity 35 is fixedly arranged on the outer surface of the slide bar 37, a third magnet 34 positioned on the right side of the second piston cavity 35 is fixedly arranged on the right end wall of the clamping arm 32, a third electromagnet 33 capable of attracting or repelling the third magnet 34 is fixedly arranged on the right end wall of the clamping arm 32, when the third electromagnet 33 repels the third magnet 34, the third magnet 34 drives the slide bar 37 to move to the right, so as to drive the piston plate 36 to move to the right, and thus the air in the second piston cavity 35 flows into the first piston cavity 38 through the slide bar 37 and pushes the piston rod 39 to move to the left, so that the first and

second holding blocks

40 and 41 are simultaneously brought close to each other to grip the needle 14.

Beneficially, the needle changing device 81 further includes a needle cavity 25 disposed inside the machine body 10 and located on the right side of the working cavity 12, baffle plates 26 are fixedly disposed on the inner wall of the needle cavity 25 in a bilateral symmetry manner, the spare needle 14 is carried on the baffle plate 26, an adding port 67 for adding the needle 14 is disposed on the top wall of the needle cavity 25, a push plate 72 connected by a spring is disposed on the rear side end wall of the needle cavity 25, the push plate 72 always pushes the needle 14 towards the front side, an opening communicating with the working cavity 12 is disposed at the front end position of the bottom wall of the needle cavity 25, a spring fixture block 66 connected by a spring is disposed on the front side end wall of the needle cavity 25, the spring fixture block 66 clamps the needle 14 so that the needle 14 cannot fall down, and support arms 69 located on the left side and the right side of the lower end opening of the needle cavity 25 are fixedly disposed on the top wall of the, a second spring rod 70 connected through a spring is slidably arranged on the bottom wall of the supporting arm 69, the upper end of the second spring rod 70 is connected with the front end of the spring clamping block 66 through a pull wire, a clamping block 71 is fixedly arranged at the bottom end of the second spring rod 70, the needle 14 falls from the opening and is clamped and clamped by the clamping block 71, when the clamping arm 32 rotates to the lower side of the supporting arm 69 and clamps the needle 14 through the first clamping block 40 and the second clamping block 41 to be pulled downwards, the needle 14 is taken down and the second spring rod 70 is pulled to move downwards, so that the spring clamping block 66 is pulled to move forwards, and the next needle 14 falls from the opening and is clamped by the clamping block 71 again; the needle changing device 81 further comprises a collecting cavity 68 which is arranged in the machine body 10 and located on the front side of the transmission cavity 45, the top of the collecting cavity 68 is communicated with the bottom wall of the working cavity 12, and an openable cavity door is arranged at the front end of the collecting cavity 68.

Beneficially, the medicine adding device 82 includes sliders 58 arranged on left and right side walls of the lifting groove 57 in an up-and-down sliding manner, a medicine adding barrel 59 which is located in the lifting groove 57 and capable of sliding up and down is jointly and fixedly arranged between the left and right sliders 58, a second rotating shaft 60 which extends into the transmission cavity 45 is rotatably arranged on the bottom wall of the lifting groove 57, a second bevel gear 54 located in the transmission cavity 45 is fixedly arranged at the bottom end of the second rotating shaft 60, the outer surface of the upper end of the second rotating shaft 60 is inserted into the medicine adding barrel 59 and is matched with the medicine adding barrel 59, the medicine adding barrel 59 can be driven to move up and down when the second rotating shaft 60 rotates, a matching cavity 63 which extends downward is arranged at the top end of the medicine adding barrel 59, a spring block 64 is arranged inside the matching cavity 63 in an up-and-down sliding manner, the spring block 64 is connected with the medicine, the fixed squeezing block 65 that is provided with of spring block 64 inside wall, add that the cartridge 59 is inside to be provided with be located cooperation chamber 63 downside and with the connection chamber 61 that cooperates chamber 63 to communicate, the inside closing plate 62 that is provided with spring coupling that connects chamber 61, closing plate 62 blocks up under the effect of spring connect chamber 61 with the through-hole that cooperates chamber 63, spring block 64 moves down and drives when squeezing block 65 moves down, can make squeezing block 65 will closing plate 62 pushes down, thereby makes connect chamber 61 with cooperation chamber 63 link up, the fixed filling tube 29 that is provided with of organism 10 right-hand end wall, the other end of filling tube 29 communicate in the diapire that connects chamber 61, the liquid medicine passes through filling tube 29 gets into connect in the chamber 61.

Advantageously, the transmission 83 includes a motor 11 fixedly disposed at the rear side of the transmission cavity 45, an output shaft 46 of the motor 11 extends forward into the transmission cavity 45, an incomplete gear 47 is fixedly disposed on the outer surface of the output shaft 46, the incomplete gear 47 can be intermittently engaged with the first bevel gear 48, a third rotating shaft 50 is rotatably disposed on the left end wall of the transmission cavity 45, a third bevel gear 49 engageable with the incomplete gear 47 is fixedly disposed on the right end of the third rotating shaft 50, a second spline shaft 52 is disposed on the outer surface of the third rotating shaft 50 in a spline fit manner, a fourth bevel gear 51 engageable with the second bevel gear 54 is fixedly disposed on the left end of the second spline shaft 52, a fifth bevel gear 53 disposed on the left side of the fourth bevel gear 51 is fixedly disposed on the outer surface of the second spline shaft 52, and the fifth bevel gear 53 can be engaged with the second bevel gear 54, the machine body 10 is internally provided with an air cylinder 55 positioned on the left side of the transmission cavity 45, an air rod 56 extending into the transmission cavity 45 and contacting with the second spline shaft 52 is arranged inside the air cylinder 55 in a left-right sliding manner, and the air rod 56 can drive the second spline shaft 52 to move left and right.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

Sequence of mechanical actions of the whole device:

in an initial state, the fifth bevel gear 53 and the second bevel gear 54 are engaged, the fourth bevel gear 51 and the second bevel gear 54 are not engaged, the incomplete gear 47 is about to be engaged with the first bevel gear 48, the second electromagnet 30 and the second magnet 31 are in a repulsive state, the sealing plate 62 is in a state of blocking the through holes of the connecting cavity 61 and the matching cavity 63, and the third electromagnet 33 and the third magnet 34 are in a suction state.

When the device of the present invention works, the needle cylinder 13 is placed between the left and right clamping plates 15 in the working chamber 12 and pressed downward, so as to drive the rotating rod 16 to rotate, and at the same time, the first electromagnet 20 attracts the first magnet 19, so that the clamping plates 15 can clamp the needle cylinder 13, at this time, the third electromagnet 33 repels the third magnet 34, so as to drive the sliding rod 37 to move right, so as to drive the piston plate 36 to move right, so that the air in the second piston chamber 35 flows into the first piston chamber 38 through the sliding rod 37 and pushes the piston rod 39 to move left, so as to make the first clamping block 40 and the second clamping block 41 approach each other simultaneously to clamp the needle 14, and the second magnet 31 attracts the second magnet 30, so that the lifting rod 27 drives the first spline shaft 22 to move downward, the needle 14 at the lower end of the needle cylinder 13 is pulled out, then the motor 11 is started to drive the output shaft 46 to rotate counterclockwise, so as to drive the incomplete gear 47 to rotate, the incomplete gear 47 is firstly engaged with the first bevel gear 48 to drive the first bevel gear 48 to rotate, so as to drive the first rotating shaft 21 to rotate counterclockwise, until the clamping arm 32 rotates to the upper side of the collecting cavity 68, the third electromagnet 33 is attracted with the third magnet 34, so that the needle 14 clamped by the first clamping block 40 and the second clamping block 41 falls into the collecting cavity 68 for recycling and centralized processing, meanwhile, the second magnet 31 and the second electromagnet 30 repel each other, so that the first spline shaft 22 moves up to the initial position, the first rotating shaft 21 continues to rotate until the second clamping block 41 and the first clamping block 40 clamp the needle 14 clamped by the clamping block 71, the incomplete gear 47 is separated from the first bevel gear 48 and meshed with the third bevel gear 49, at this time, the incomplete gear 47 drives the third bevel gear 49 to rotate, thereby driving the third rotating shaft 50 to rotate, thereby driving the fifth bevel gear 53 to rotate, thereby driving the second bevel gear 54 to rotate, thereby driving the second rotating shaft 60 to rotate, thereby driving the medicine adding barrel 59 to move upwards until the bottom end of the syringe 13 is inserted into the matching cavity 63 to press the spring block 64 downwards, when the spring block 64 moves downwards to drive the extruding block 65 to move downwards, the extruding block 65 can press the sealing plate 62 downwards, thereby the connecting cavity 61 is communicated with the matching cavity 63, so as to add medicine liquid into the syringe 13 through the liquid adding pipe 29, after medicine adding is completed, the air cylinder 55 controls the air rod 56 to move leftwards so that the fourth bevel gear 51 is meshed with the second bevel gear 54, so that the second rotating shaft 60 rotates reversely to drive the medicine adding barrel 59 to move back to the initial position, thereby completing the whole medicine adding process, during the medicine adding process, the third electromagnet 33 repels the third magnet 34 again, so that the first clamping block 40 and the second clamping block 41 clamp the needle 14 again, and under the re-attraction of the second magnet 31 and the second electromagnet 30, the needle 14 clamped by the clamping block 71 is pulled out, the needle 14 is removed, and at the same time, the second spring rod 70 is pulled to move downwards, thereby pulling the spring clamping block 66 to move forwards, so that the next needle 14 falls from the opening and is clamped by the clamping block 71 again, at this time, the incomplete gear 47 is engaged with the first bevel gear 48 again, and is separated from the third bevel gear 49, the first rotating shaft 21 continues to rotate and move the removed needle 14 to the lower side of the needle cylinder 13, and the needle 14 is mounted at the bottom end of the needle cylinder 13 under the repulsing action of the second electromagnet 30 and the second magnet 31, so as to complete the needle changing operation.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a medicine that veterinary syringe trades needle equipment, includes the organism and sets up upwards open-ended working chamber in the organism, its characterized in that: the needle changing device is arranged in the working cavity and comprises rotating rods which are symmetrically and hinged on the left end wall and the right end wall of the working cavity, first cantilevers are symmetrically and fixedly arranged on the outer surfaces of the rotating rods, the first cantilevers on the upper side are connected with the end wall of the working cavity through springs, first magnets are fixedly arranged on the surfaces of the first cantilevers on the lower side, first electromagnets which are positioned on the lower side of the rotating rods are fixedly arranged on the left end wall and the right end wall of the working cavity, when the first magnets are in contact with the first electromagnets due to the rotation of the rotating rods, the first electromagnets can be controlled to attract the first magnets so that the rotating rods can be fixed, first spring rods which are connected through springs are slidably arranged in the rotating rods, clamping plates are fixedly arranged on the end surfaces of the first spring rods which are positioned in the working cavity, the left clamping plates and the right clamping, the needle cylinder is placed between the left clamping plate and the right clamping plate in the working cavity and is pressed downwards, so that the rotating rod is driven to rotate, the first electromagnet is enabled to attract the first magnet, the clamping plates can clamp the needle cylinder tightly, and the needle head at the bottom end of the needle cylinder can be conveniently and subsequently operated, a transmission cavity is arranged in the machine body and is positioned at the lower side of the working cavity, the top wall of the transmission cavity is rotatably provided with a first rotating shaft extending to the top wall of the working cavity, the bottom end of the first rotating shaft is fixedly provided with a first bevel gear positioned in the transmission cavity, the outer surface of the first rotating shaft is provided with a first spline shaft positioned in the working cavity in a vertical sliding manner, the outer surface of the first spline shaft is rotatably provided with a first sleeve, the outer surface of the first sleeve is fixedly provided with second cantilevers in a bilateral symmetry manner, and the bottom, the bottom wall of the working cavity is fixedly provided with second sleeves which are bilaterally symmetrical and used for sleeving each lifting rod, a second electromagnet is fixedly arranged in each second sleeve, a second magnet which can be attracted or repelled with the second electromagnet is fixedly arranged at the bottom end of each lifting rod, and a clamping arm positioned on the upper side of each first sleeve is fixedly arranged on the outer surface of the first spline shaft; a lifting groove positioned between the transmission device and the working cavity is formed in the machine body, a medicine adding device is arranged in the lifting groove, and the medicine adding device is used for adding liquid medicine into the needle cylinder; the inside transmission that is located of organism be provided with of transmission intracavity, transmission does the needle changing device with charge device transmission power.

2. The medicine adding and needle changing device of the veterinary syringe as claimed in claim 1, wherein: the needle changing device also comprises a first piston cavity arranged in the clamping arm, a piston rod which extends to the outside of the left side of the clamping arm is arranged in the first piston cavity in a left-right sliding manner, a first clamping block positioned on the left side of the clamping arm is fixedly arranged at the left end of the piston rod, a supporting plate is fixedly arranged at the rear end wall of the clamping arm, a limiting plate is arranged in the supporting plate in a left-right sliding manner, a fixing rod positioned on the left side of the first clamping block is fixedly arranged at the left end of the limiting plate, a second clamping block is fixedly arranged at the end wall of the fixing rod close to the first clamping block, when the needle cylinder is inserted downwards, the needle head just falls between the first clamping block and the second clamping block, a second piston cavity positioned on the right side of the supporting plate is arranged in the clamping arm, and a slide rod communicated with the right end wall of the piston rod, the fixed dead lever right side wall is provided with fixedly and runs through the backup pad with the second piston chamber extends to the left slide bar of second piston chamber, the slide bar external surface is fixed and is provided with the piston plate that is located the second piston intracavity, the slide bar right-hand member is fixed and is provided with the third magnet that is located the second piston chamber right side, the fixed third electro-magnet that is provided with of centre gripping arm right-hand member wall can with third magnet actuation or repulsion, the third electro-magnet with when the third magnet is repulsive each other, the third magnet drives the slide bar moves to the right, thereby drives the piston plate moves to the right, thereby makes the air in the second piston intracavity pass through the slide bar flows into first piston intracavity and promotes the piston rod moves to the left, thereby makes first grip block with the second grip block is close to each other simultaneously and presss from both sides the syringe needle.

3. The medicine adding and needle changing device of the veterinary syringe as claimed in claim 2, wherein: the needle changing device also comprises a needle head cavity which is arranged in the machine body and positioned on the right side of the working cavity, baffle plates are fixedly arranged on the inner wall of the needle head cavity in a bilateral symmetry mode, the spare needle head is carried on the baffle plates, an adding port for adding the needle head is arranged on the top wall of the needle head cavity, a spring-connected push plate is arranged on the rear side end wall of the needle head cavity, the push plate always pushes the needle head towards the front side, an opening communicated with the working cavity is arranged at the front end of the bottom wall of the needle head cavity, a spring clamping block connected by a spring is arranged on the front side end wall of the needle head cavity, the needle head cannot fall down due to the clamping of the needle head by the spring clamping block, support arms which are positioned on the left side and the right side of the opening at the lower end of the needle head cavity, the upper end of the second spring rod is connected with the front end of the spring clamping block through a pull wire, a clamping block is fixedly arranged at the bottom end of the second spring rod, the needle head falls from an opening and is clamped and clamped by the clamping block, when the clamping arm rotates to the lower side of the supporting arm and clamps the needle head through the first clamping block and the second clamping block and is pulled downwards, the needle head is taken down and the second spring rod is pulled to move downwards, so that the spring clamping block is pulled to move forwards, and the next needle head falls from the opening and is clamped by the clamping block again; the needle changing device further comprises a collecting cavity which is arranged in the machine body and located on the front side of the transmission cavity, the top of the collecting cavity is communicated with the bottom wall of the working cavity, and an openable cavity door is arranged at the front end of the collecting cavity.

4. The medicine adding and needle changing device of the veterinary syringe as claimed in claim 1, wherein: the medicine adding device comprises sliders which are arranged on the left side wall and the right side wall of the lifting groove in an up-and-down sliding manner, a medicine adding barrel which is positioned in the lifting groove and can slide up and down is fixedly arranged between the left slider and the right slider, the bottom wall of the lifting groove is rotatably provided with a second rotating shaft which extends into the transmission cavity, the bottom end of the second rotating shaft is fixedly provided with a second bevel gear which is positioned in the transmission cavity, the outer surface of the upper end of the second rotating shaft is inserted into the medicine adding barrel and is matched with the medicine adding barrel, the second rotating shaft can drive the medicine adding barrel to move up and down when rotating, the top end of the medicine adding barrel is provided with a matching cavity which extends downwards, the inner part of the matching cavity is provided with a spring block in an up-and-down sliding manner, the spring block is connected with the medicine adding barrel through a spring, the middle part of the spring block is a, the sealing plate is connected with a spring, the sealing plate is plugged under the action of the spring, the connecting cavity is communicated with the through hole of the matching cavity, the spring block moves downwards to drive the extrusion block to move downwards, the extrusion block can be pressed downwards by the sealing plate, so that the connecting cavity is communicated with the matching cavity, a liquid adding pipe is fixedly arranged on the right end wall of the machine body, the other end of the liquid adding pipe is communicated with the bottom wall of the connecting cavity, and liquid medicine enters the connecting cavity through the liquid adding pipe.

5. The medicine adding and needle changing device of the veterinary syringe as claimed in claim 4, wherein: the transmission device comprises a motor fixedly arranged at the rear side of the transmission cavity, an output shaft of the motor extends forwards into the transmission cavity, an incomplete gear is fixedly arranged on the outer surface of the output shaft, the incomplete gear can be intermittently meshed with the first bevel gear, a third rotating shaft is rotatably arranged on the left end wall of the transmission cavity, a third bevel gear capable of being meshed with the incomplete gear is fixedly arranged at the right end of the third rotating shaft, a second spline shaft is arranged on the outer surface of the third rotating shaft in a spline fit manner, a fourth bevel gear capable of being meshed with the second bevel gear is fixedly arranged at the left end of the second spline shaft, a fifth bevel gear positioned at the left side of the fourth bevel gear is fixedly arranged on the outer surface of the second spline shaft, the fifth bevel gear can be meshed with the second bevel gear, and an air cylinder positioned at the left side of the transmission cavity is, the air cylinder is internally provided with an air rod which extends into the transmission cavity and is in contact with the second spline shaft in a left-right sliding mode, and the air rod can drive the second spline shaft to move left and right.