Needle tube filling machine for filling paste

Abstract

The invention discloses a needle tube filling machine for filling paste. The needle tube filling machine comprises a machine shell, a needle tube support, a needle tube, a material cylinder, a lifting driving mechanism, a material pushing disc and a material disc jacking mechanism. An assembly hole is formed in the top end face of the machine shell, a discharging block is fixed in the assembly hole, and a plurality of discharging channels are formed in the discharging block; the needle tube support is fixed to the top end of the machine shell. The needle tubes are detachably installed on the needle tube support, and the needle head of each needle tube is inserted into the corresponding discharging channel downwards. The top end of the material cylinder is provided with a discharge hole, and the bottom end of the material cylinder is open; the lifting driving mechanism is installed on the machine shell, and the lifting end of the lifting driving mechanism is detachably connected with the material cylinder. The material pushing disc is in sliding limiting connection with the inner side wall of the material cylinder; and the material tray jacking mechanism is mounted at the bottom in the machine shell corresponding to the material pushing tray. The needle tube filling machine for filling the paste can be used for filling materials into a plurality of needle tubes at the same time.

Description

Technical Field

[0001] This invention relates to the field of paste filling equipment technology, and more specifically to a syringe filling machine for filling pastes. Background Technology

[0002] Ointments are intermediate between solids and liquids, characterized by high viscosity and poor flowability. They are widely used in medicine, cosmetics, and industry. Common medical ointments include erythromycin ointment, Yunnan Baiyao ointment, and eye ointments; common cosmetic ointments include lotions and eye creams; and common industrial ointments include sealants and lubricants.

[0003] The hydrogel syringe gel filling machine is an industrial device specifically designed for the automated filling of high-viscosity gel products. In operation, the syringe is manually inserted downwards into the machine's outlet, and the filling button is pressed. Material from the internal cylinder is injected into the syringe from bottom to top. This gel filling machine can only fill one syringe at a time and cannot fill multiple syringes simultaneously. Chinese utility model patent CN212290438U discloses a pneumatic syringe filling machine, including a material tank, suction valve, metering cylinder, standard cylinder, discharge valve, syringe, syringe pusher, and dual-axis cylinder. In this machine, the suction valve draws material from the tank into the metering cylinder and then closes. Subsequently, the discharge valve opens, and the standard cylinder drives the piston in the metering cylinder upwards, using pressure to fill the syringe with material. After filling, a new syringe is replaced. While this device can fill materials of different textures into syringes, the filling speed is slow and it cannot fill multiple syringes simultaneously.

[0004] Therefore, providing a filling machine that is reasonably designed, easy to operate, and capable of simultaneously filling multiple syringes with ointment is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a syringe filling machine for filling pastes, which is time-saving, labor-saving, easy to operate, and can automatically fill multiple syringes with paste materials at the same time.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A syringe filling machine for filling pastes includes a housing, a syringe holder, syringes, a material cylinder, a lifting drive mechanism, a pusher plate, and a material cylinder lifting mechanism. The top surface of the housing has an assembly hole, within which a discharge block is fixed. The discharge block has multiple discharge channels arranged perpendicularly to the top surface of the housing. The syringe holder is fixed to the top of the housing. Multiple syringes are included, each detachably mounted on the syringe holder, and the tip of each syringe can be inserted downwards into a corresponding discharge channel. The material cylinder corresponds to the discharge block. The material cylinder is arranged inside the housing. The top of the material cylinder has a discharge hole and the bottom is open. The lifting drive mechanism is installed on the housing. The lifting end of the lifting drive mechanism is detachably connected to the material cylinder to drive the material cylinder to rise so that the discharge hole connects to multiple discharge channels. The pusher plate is slidably limited to the inner side wall of the material cylinder. The material plate lifting mechanism is installed at the bottom of the housing corresponding to the pusher plate, and its output end drives the pusher plate to move upward to squeeze the material in the material cylinder upward through the discharge channel and fill it into the syringe.

[0008] Through the above technical solution, this invention discloses a syringe filling machine for filling pastes. In use, multiple syringes are mounted on a syringe support. A lifting drive mechanism drives a material cylinder to rise, aligning the discharge port at the top of the cylinder with the discharge channel on the discharge block. The output end of the material tray lifting mechanism pushes a pusher plate to slide upwards within the cylinder, squeezing the material inside. The material in the cylinder passes through the discharge channel from bottom to top and is injected into multiple syringes for filling. After filling, new syringes can be replaced. This syringe filling machine for filling pastes is rationally designed, easy to operate, highly automated, time-saving, and labor-saving, and can simultaneously fill multiple syringes with paste materials.

[0009] Preferably, the needle holder includes a frame and two assembly plates, one horizontally fixed to the frame from bottom to top. The frame is fixed to the top of the machine housing on the side corresponding to the discharge block. The side of the assembly plate near the discharge block is provided with multiple positioning slots. The assembly plate is provided with piston rod through holes corresponding to each positioning slot. The syringe barrel of each needle is inserted into the corresponding positioning slot, and the wing plate of the syringe barrel can abut against the lower surface of the assembly plate. The piston rod of each needle is inserted upward into the corresponding piston rod through hole.

[0010] The beneficial effects of adopting the above technical solution are that, during the filling process, the positioning groove can limit the shaking of the syringe, the piston rod perforation can prevent the piston rod of the syringe from shaking, and the wing plate of the syringe abutting against the lower surface of the assembly plate can limit the up and down movement of the syringe.

[0011] Preferably, the device further includes a PLC controller and a quantitative filling control mechanism. The needle holder also includes an assembly plate three, which is fixed parallel to and spaced on the frame above the assembly plate two. The quantitative filling control mechanism includes rods, detection blocks, position detectors, and material on / off controllers. Multiple rods slide along the height of the housing on the assembly plate three and correspond one-to-one with multiple needles. The bottom of each rod abuts against the top of the piston rod of the corresponding needle. The rise of the piston rod pushes the corresponding rod upwards. Multiple detection blocks are located between the assembly plate three and the assembly plate two, and each detection block is detachably mounted on one of the multiple rods. The rod body is used to position the filling volume of each needle tube; there are multiple position detectors, all installed on the lower surface of the assembly plate three, with the detection end of each position detector facing one side of the rod body, and each position detector is wirelessly connected to the PLC controller. When each position detector detects the arrival information of the corresponding detected block, it sends a filling stop signal to the PLC controller; the material on / off controller corresponds to the number of needle tubes and is installed on the top of the housing. The output end of each material on / off controller is inserted into the discharge block to control the material on / off in the corresponding discharge channel, and each material on / off controller is electrically connected to the PLC controller.

[0012] The beneficial effects of the above technical solution are as follows: when filling the syringe with material, the material is injected into the syringe cavity through the needle at the front end of the syringe after passing through the discharge channel. The material inside the syringe gradually increases and pushes up the piston rod. The piston rod pushes the rod body upward, and the detection block installed on the rod body rises. After the position detector detects the corresponding detection block, it sends a filling stop signal to the controller. After receiving the filling stop signal, the controller controls the operation of the corresponding material on / off controller to cut off the discharge channel, thereby stopping the filling work of the corresponding syringe. Changing the installation height of the detection block can also control the dosage injected into the syringe. This invention can individually control the filling amount of each syringe through the quantitative filling control mechanism.

[0013] Preferably, each of the material on / off controllers includes a rotating motor and a rotating shaft; the rotating motor is fixed to the top of the housing and arranged on one side of the discharge block, and the rotating motor is electrically connected to the PLC controller; one end of the rotating shaft is connected to the output shaft of the rotating motor through a coupling, and the other end is inserted into the discharge block and passes through the corresponding discharge channel; the rotating shaft has radially arranged material passage holes, and the rotation of the rotating shaft can connect or disconnect the discharge channel.

[0014] The beneficial effect of adopting the above technical solution is that after the PLC controller receives the filling stop signal, it controls the corresponding rotating motor to start. The output shaft of the rotating motor drives the rotating shaft to rotate. The rotation of the rotating shaft makes the material passage hole no longer connected with the discharge channel, thereby blocking the flow of material in the discharge channel.

[0015] Preferably, the device further includes a lifting mechanism. The needle holder also includes an assembly plate four, which is fixed parallel to and spaced on the frame above the assembly plate three. The lifting mechanism includes a cylinder and a lifting plate. The cylinder is fixed to the upper surface of the assembly plate four, and its telescopic rod extends downward through the assembly plate four. The cylinder is electrically connected to the PLC controller. The upper surface of the lifting plate is fixedly connected to the telescopic rod of the cylinder. The top ends of the multiple rods slide upward through the through holes in the lifting plate and are fitted with limit bolts. When the telescopic rod of the cylinder retracts, it can drive the lifting plate to rise and lift the multiple rods to facilitate the replacement of the needle.

[0016] The beneficial effect of adopting the above technical solution is that after all the syringe filling work is completed, the PLC controller controls the cylinder to run, the cylinder's telescopic rod retracts and drives the lifting plate to rise. The lifting plate lifts all the rods through the limit bolts, so that the rods no longer contact the piston rod of the syringe. Then, a new syringe is replaced for the next round of filling process.

[0017] The lifting drive mechanism and the tray lifting mechanism of the present invention are manual or electric drive mechanisms.

[0018] Preferably, the material tray lifting mechanism includes a hydraulic cylinder and a hydraulic drive unit; the hydraulic cylinder is installed at the bottom of the machine housing corresponding to the material pusher, and its hydraulic rod is arranged upward to push the material pusher; the hydraulic drive unit is fixed inside the machine housing, the hydraulic drive unit is oil circuit controlled connected to the hydraulic cylinder, and is electrically controlled connected to the PLC controller.

[0019] The beneficial effect of adopting the above technical solution is that the PLC controller controls the hydraulic drive unit to start, the hydraulic drive unit controls the hydraulic cylinder to run through the oil circuit, the hydraulic rod of the hydraulic cylinder extends and pushes the pusher plate to rise in the material cylinder, so that the pusher plate squeezes the material in the material cylinder upward.

[0020] Preferably, the material cylinder includes a cylinder body and a cylinder cover; the cylinder body is detachably connected to the lifting end of the lifting drive mechanism and its top end is open, and the bottom end of the cylinder body is open; the cylinder cover is detachably installed on the top end of the cylinder body, and there are multiple discharge holes, all of which are opened on the cylinder cover, and the multiple discharge holes correspond one-to-one with the multiple discharge channels.

[0021] Preferably, the lifting drive mechanism includes a hand-cranked drive unit, a transmission rod, a support, and a lifting rod; the hand-cranked drive unit is mounted on the housing; the transmission rod is located inside the housing and arranged perpendicularly to its top surface, the top end of the transmission rod is hinged to the output end of the hand-cranked drive unit, and the hand-cranked drive unit can drive the transmission rod to move up and down within the housing; the support is located below the transmission rod and hinged to its bottom end; the lifting rod is located inside the housing, arranged parallel to the transmission rod, and fixedly connected to the support; the cylinder is detachably mounted on the lifting rod via a support frame, and the cylinder is detachably connected to the support frame.

[0022] The beneficial effect of adopting the above technical solution is that the transmission rod can be driven to rise and fall inside the machine housing by the hand-cranked drive unit. The transmission rod drives the lifting rod to rise and fall through the support, and the lifting rod further drives the cylinder to rise and fall.

[0023] Preferably, a guide seat is installed inside the housing, and a guide hole is provided on the guide seat along the height direction of the housing, and the lifting rod is slidably limited within the guide hole.

[0024] The beneficial effect of adopting the above technical solution is that the guide seat can improve the stability of the lifting rod during lifting and lowering, and prevent the lifting rod from shaking, which would cause the discharge hole and the discharge channel to not be accurately aligned.

[0025] Preferably, the hand-cranked drive unit includes a rotating drum, a rotating shaft, a strip-shaped rotating plate, and a hand crank; one end of the rotating drum is rotatably mounted on the housing; the rotating shaft is horizontally arranged inside the housing and one end is coaxially fixed inside the rotating drum, and its rotation axis is arranged parallel to the top surface of the housing; the first end of the rotating plate is vertically fixedly connected to the other end of the rotating shaft, and the second end is hinged to the top end of the transmission rod, and its second end can rotate around the axis of the rotating shaft to drive the transmission rod to move up and down; the hand crank is arranged on the outside of the housing and inserted into the rotating drum.

[0026] The beneficial effect of adopting the above technical solution is that rotating the hand crank can cause the rotating drum to drive the rotating shaft to rotate, and the axis of rotation is parallel to the top surface of the machine housing. The rotation of the rotating shaft causes the second end of the rotating plate to drive the transmission rod to move up and down when rotating. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0028] Figure 1This is a schematic diagram of the overall structure of a syringe filling machine for filling ointments according to the present invention; Figure 2 This is a front view of the overall structure of a syringe filling machine for filling pastes according to the present invention; Figure 3 This is a front view of the material tray lifting mechanism in the present invention assembled inside the machine housing; Figure 4 This is a schematic diagram of the discharge block in this invention; Figure 5 This is a schematic diagram of the material cylinder and the pusher plate after disassembly in this invention; Figure 6 This is a schematic diagram of the needle holder in the present invention; Figure 7 This is a schematic diagram of the quantitative filling control mechanism and the lifting rod mechanism installed on the needle holder in this invention; Figure 8 For the present invention Figure 7 Right view of the middle structure; Figure 9 This is a schematic diagram showing the connection between the material on / off controller and the discharge block in this invention; Figure 10 This is a schematic diagram of the material on / off controller in this invention.

[0029] Figure 11 This is a schematic diagram of the lifting drive mechanism installed inside the housing in this invention; Figure 12 for Figure 11 A magnified schematic diagram of the structure at point C. Figure 13 This is a schematic diagram showing the connection between the lifting drive mechanism and the material cylinder in this invention; Figure 14 This is a schematic diagram of the lifting drive mechanism in this invention; Figure 15 This is a side view of the cooperation between the hand-cranked drive unit, the transmission rod, and the limiting baffle during the filling process of the present invention; Figure 16 for Figure 15 Analysis diagram of the force and rotation direction of the transmission rod.

[0030] The components are: 01-Machine casing, 02-Discharge block, 03-Needle holder, 04-Needle, 05-Material cylinder, 06-Lifting drive mechanism, 07-Pushing tray, 08-Material tray lifting mechanism, 09-PLC controller, 10-Support frame, 11-Quantitative filling control mechanism, 12-Lifting rod mechanism, 13-Guide seat, 14-Limit baffle, 021-Discharge channel, 031-Frame, 032-Assembly plate one, 033-Assembly plate two, 034-Assembly plate three, 035-Assembly plate four, 041-Needle cylinder, 042-Piston rod, 051-Discharge hole, 05 2-Cylinder body, 053-Cylinder head, 061-Hand crank drive unit, 062-Transmission rod, 063-Support, 064-Lifting rod, 0611-Rotating drum, 0612-Rotating shaft, 0613-Rotating plate, 0614-Hand crank, 081-Hydraulic cylinder, 082-Hydraulic drive unit, 111-Rod body, 112-Detected block, 113-Position detector, 114-Material on / off controller, 121-Cylinder, 122-Lifting rod plate, 0321-Positioning slot, 0331-Piston rod perforation, 1141-Rotating motor, 1142-Rotating shaft. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0034] See appendix Figure 1 To be continued Figure 5 According to an embodiment of the present invention, a syringe filling machine for filling paste includes a housing 01, a syringe support 03, syringes 04, a material cylinder 05, a lifting drive mechanism 06, a pusher plate 07, and a material cylinder lifting mechanism 08. An assembly hole is provided on the top surface of the housing 01, and a discharge block 02 is fixed inside the assembly hole. Multiple discharge channels 021 arranged perpendicularly to the top surface of the housing 01 are provided inside the discharge block 02. The syringe support 03 is fixed to the top of the housing 01. Multiple syringes 04 are present and detachably mounted on the syringe support 03, and the needle tip of each syringe 04 can be inserted downwards into the corresponding discharge channel 021. The material cylinder... The material cylinder 05 is arranged inside the housing 01, corresponding to the discharge block 02. The top of the material cylinder 05 has a discharge hole 051 and its bottom is open. The lifting drive mechanism 06 is installed on the housing 01. The lifting end of the lifting drive mechanism 06 is detachably connected to the material cylinder 05 to drive the material cylinder 05 to rise so that the discharge hole 051 connects to multiple discharge channels 021. The pusher plate 07 is slidably limited to the inner side wall of the material cylinder 05. The material plate lifting mechanism 08 is installed at the bottom of the housing 01 corresponding to the pusher plate 07, and its output end drives the pusher plate 07 to move upward to squeeze the material in the material cylinder 05 upward through the discharge channel 021 and fill it into the needle tube 04.

[0035] This device is used for filling paste-like materials with high viscosity and poor flowability. When using this device, the lifting drive mechanism 06 first drives the material cylinder 05 to rise, so that the discharge hole 051 on the material cylinder 05 aligns with the multiple discharge channels 021 on the discharge block 02. Then, the material plate lifting mechanism 08 pushes the pusher plate 07 to move upward in the material cylinder 05 to squeeze the material upward. Finally, the material in the material cylinder 05 is injected into the needle tube 04 through the discharge hole 051 and multiple discharge channels 021 under pressure.

[0036] Specifically, a sealing ring is installed on the side wall of the pusher plate 07.

[0037] See appendix Figure 6 To be continued Figure 10 In some specific examples, the needle holder 03 includes a frame 031 and two assembly plates 032 and 033, which are horizontally fixed to the frame 031 from bottom to top. The frame 031 is fixed to the top of the housing 01 on the side corresponding to the discharge block 02. The side of the assembly plate 032 near the discharge block 02 is provided with multiple positioning slots 0321. The assembly plate 033 is provided with piston rod through holes 0331 corresponding to each positioning slot 0321. The syringe 041 of each needle tube 04 is inserted into the corresponding positioning slot 0321 and the wing plate of the syringe 041 can abut against the lower plate surface of the assembly plate 0333. The piston rod 042 of each needle tube 04 is inserted upward into the corresponding piston rod through hole 0331.

[0038] The syringe 04 is installed as follows: the needle tip of the syringe 041 is inserted into the discharge channel 021, the syringe 041 passes through the positioning slot 0321 on the first assembly plate 032, and the wing plate of the syringe 041 abuts against the lower surface of the second assembly plate 033. Simultaneously, the piston rod 042 of the syringe 04 passes upward through the limiting piston rod through hole 0331 of the second assembly plate 033. This installation method not only facilitates the installation and removal of the syringe 04, but also restricts the shaking and vertical movement of the syringe 041 during the filling process, improving the stability of the syringe 041.

[0039] In some embodiments, the system further includes a PLC controller 09 and a quantitative filling control mechanism 11. The needle holder 03 also includes an assembly plate three 034, which is fixed parallel to and spaced on the frame 031 above the assembly plate two 033. The quantitative filling control mechanism 11 includes rods 111, detection blocks 112, position detectors 113, and material on / off controllers 114. There are multiple rods 111, which slide along the height direction of the housing 01 on the assembly plate three 034 and correspond one-to-one with multiple needles 04. The bottom of each rod 111 abuts against the top of the piston rod 042 of the corresponding needle 04. The piston rod 042 rising can push the corresponding rod 111 to rise. There are multiple detection blocks 112, all located between the assembly plate three 034 and the assembly plate two 033. 12 are detachably mounted on multiple rods 111 to position the filling volume of each syringe 04; there are multiple position detectors 113, all mounted on the lower surface of the assembly plate 3 034, with the detection end of each position detector 113 facing the rod 111, each position detector 113 is wirelessly connected to the PLC controller 09, and each position detector 113 sends a filling stop signal to the PLC controller 09 when it detects the arrival information of the corresponding detected block 112; the number of material on / off controllers 114 corresponds to the number of syringes 04 and are all mounted on the top of the housing 01, the output end of each material on / off controller 114 is inserted into the discharge block 02 to control the material on / off in the corresponding discharge channel 021, and each material on / off controller 114 is electrically connected to the PLC controller 09.

[0040] The working principle of quantitative filling for each syringe 04 is as follows: the material in the syringe 041 gradually accumulates and pushes up the piston rod 042 of the syringe 04. The piston rod 042 pushes the rod body 111 upward, and the detection block 112 fixed on the rod body 111 rises. When the position detector 113 fixed on the lower surface of the assembly plate three 034 detects the corresponding detection block 112, it sends a filling stop signal to the PLC controller 09. After receiving the filling stop signal, the PLC controller 09 controls the corresponding material on / off controller 114 to operate and cut off the corresponding discharge channel 021. The filling dosage of the corresponding syringe 04 can be changed by changing the installation height of the detection block 112, but it is necessary to ensure that the detection block 112 is between the assembly plate three 034 and the assembly plate two 033, that is, the detection block 112 stops between the assembly plate three 034 and the assembly plate two 033.

[0041] In some specific examples, each material on / off controller 114 includes a rotating motor 1141 and a rotating shaft 1142; the rotating motor 1141 is fixed to the top of the housing 01 and arranged on one side of the discharge block 02, and the rotating motor 1141 is electrically connected to the PLC controller 09; one end of the rotating shaft 1142 is connected to the output shaft of the rotating motor 1141 through a coupling, and the other end is inserted into the discharge block 02 and passes through the corresponding discharge channel 021. The rotating shaft 1142 is provided with radially arranged material passage holes, and the rotation of the rotating shaft 1142 can connect or disconnect the discharge channel 021.

[0042] The process of material flow controller 114 cutting off the discharge channel 021 is as follows: When PLC controller 09 receives the filling stop signal, it controls the rotation motor 1141 to start. The output shaft of the rotation motor 1141 drives the rotation shaft 1142 inserted into the discharge block 02 to rotate through the coupling. The rotation of the rotation shaft 1142 causes the discharge channel 021 to no longer be connected with the material passage hole, and the discharge channel 021 is blocked by the rotation shaft 1142.

[0043] In other embodiments, a lifting mechanism 12 is also included. The needle holder 03 also includes an assembly plate 4 035, which is fixed parallel to the frame 031 above the assembly plate 3 034. The lifting mechanism 12 includes a cylinder 121 and a lifting plate 122. The cylinder 121 is fixed to the upper surface of the assembly plate 4 035, and its telescopic rod extends downward through the assembly plate 4 035. The cylinder 121 is electrically connected to the PLC controller 09. The upper surface of the lifting plate 122 is fixedly connected to the telescopic rod of the cylinder 121. The top ends of multiple rods 111 slide upward through the through holes on the lifting plate 122 and are fitted with limit bolts. The retraction of the telescopic rod of the cylinder 121 can drive the lifting plate 122 to rise and lift the multiple rods 111 to facilitate the replacement of the needle 04.

[0044] The lifting mechanism 12 is linked with the quantitative filling control mechanism 11. After all the syringes 04 have been filled, the lifting mechanism 12 lifts all the rods 111 away from the piston rod 042 of the syringes 04, and then replaces the syringes 04 for the next filling process. The working process of the lifting mechanism 12 is as follows: the PLC controller 09 controls the cylinder 121 to run, the telescopic rod of the cylinder 121 retracts and drives the lifting plate 122 to rise, and the lifting plate 122 lifts all the rods 111 away from the piston rod 042 through the limit bolts.

[0045] The lifting drive mechanism 06 and the material tray lifting mechanism 08 are manual or electric drive mechanisms.

[0046] See appendix Figure 3 In some embodiments, the material tray lifting mechanism 08 includes a hydraulic cylinder 081 and a hydraulic drive unit 082; the hydraulic cylinder 081 is installed at the bottom of the housing 01 corresponding to the pusher tray 07, and its hydraulic rod is arranged upward to push the pusher tray 07; the hydraulic drive unit 082 is fixed inside the housing 01, and the hydraulic drive unit 082 is connected to the hydraulic cylinder 081 by oil circuit control and is electrically connected to the PLC controller 09.

[0047] In this embodiment, the material tray lifting mechanism 08 adopts an electric drive mechanism. The working principle of the material tray lifting mechanism 08 is as follows: the PLC controller 09 controls the hydraulic drive unit 082 to start, and the hydraulic drive unit 082 controls the hydraulic cylinder 081 to run through the oil circuit. The hydraulic rod of the hydraulic cylinder 081 extends and pushes the pusher plate 07 to rise in the material cylinder, so that the pusher plate 07 squeezes the material in the material cylinder 05 upward.

[0048] See appendix Figure 5 The material cylinder 05 includes a cylinder body 052 and a cylinder cover 053; the cylinder body 052 is detachably connected to the lifting end of the lifting drive mechanism 06 and its top end is open, and the bottom end of the cylinder body 052 is open; the cylinder cover 053 is detachably installed on the top end of the cylinder body 052, and there are multiple discharge holes 051, all of which are opened on the cylinder cover 053, and the multiple discharge holes 051 correspond one-to-one with the multiple discharge channels 021.

[0049] See appendix Figure 11 To be continued Figure 14In some embodiments, the lifting drive mechanism 06 includes a hand-cranked drive unit 061, a transmission rod 062, a support 063, and a lifting rod 064. The hand-cranked drive unit 061 is mounted on the housing 01. The transmission rod 062 is located inside the housing 01 and is arranged perpendicular to its top surface. The top of the transmission rod 062 is hinged to the output end of the hand-cranked drive unit 061, and the hand-cranked drive unit 061 can drive the transmission rod 062 to move up and down within the housing 01. The support 063 is located below the transmission rod 062 and is hinged to its bottom end. The lifting rod 064 is located inside the housing 01 and is arranged parallel to the transmission rod 062 and is fixedly connected to the support 063. The cylinder 052 is detachably mounted on the lifting rod 064 via a support frame 10, and the cylinder 052 is detachably connected to the support frame 10.

[0050] In this embodiment, the lifting drive mechanism 06 adopts a manual drive mechanism. The working process of the lifting drive mechanism 06 is as follows: the transmission rod 062 is driven to rise and fall within the housing 01 by the hand crank drive unit 061. The transmission rod 062 drives the lifting rod 064 to rise and fall through the support 063. The lifting rod 064 further drives the cylinder 052 to rise and fall.

[0051] In some specific examples, a guide seat 13 is installed inside the housing 01, and a guide hole is provided on the guide seat 13 along the height direction of the housing 01. The lifting rod 064 is slidably limited in the guide hole.

[0052] The guide seat 13 can improve the stability of the lifting rod 064 during lifting and lowering, and prevent the lifting rod 064 from shaking, which would cause the discharge hole 051 and the discharge channel 021 to not be accurately aligned.

[0053] In some embodiments, the hand-cranked drive unit 061 includes a rotating drum 0611, a rotating shaft 0612, a strip-shaped rotating plate 0613, and a hand crank 0614; one end of the rotating drum 0611 is rotatably mounted on the housing 01; the rotating shaft 0612 is horizontally arranged inside the housing 01 and one end of it is coaxially fixed inside the rotating drum 0611, and its rotation axis is arranged parallel to the top surface of the housing 01; the first end of the rotating plate 0613 is vertically fixedly connected to the other end of the rotating shaft 0612, and the second end is hinged to the top end of the transmission rod 062, and its second end can rotate around the axis of the rotating shaft 0612 to drive the transmission rod 062 to move up and down; the hand crank 0614 is arranged on the outside of the housing 01 and inserted into the rotating drum 0611.

[0054] The process of the hand-cranked drive unit 061 driving the transmission rod 062 to rise and fall is as follows: the hand crank 0614 is manually rotated, and the hand crank 0614 drives the rotating shaft 0612 to rotate inside the housing 01 through the rotating cylinder 0611. The rotation axis of the rotating shaft 0612 is parallel to the top surface of the housing 01. The rotation of the rotating shaft 0612 causes the second end of the rotating plate 0613 to drive the transmission rod 062 to rise and fall when it rotates.

[0055] Specifically, since the bottom end of the transmission rod 062 is hinged to the support 063 and the top end of the transmission rod 062 is hinged to the second rotating end of the rotating plate 0613, the top end of the transmission rod 062 will tilt when it rotates.

[0056] In some specific examples, a limiting baffle 14 perpendicular to its top surface is installed inside the housing 01, and the limiting baffle 14 is arranged on one side of the rotating plate 0613.

[0057] See appendix Figure 15 When the material cylinder 05 is raised so that the discharge hole 051 is connected to the discharge channel 021 for filling, the rotating plate 0613 will be blocked by the limit baffle 14 after rotating clockwise past the upper stop point and will no longer rotate. The rotating plate 0613 will no longer rotate clockwise so that the top of the transmission rod 062 cannot descend, that is, the material cylinder 05 cannot automatically reset under its own weight.

[0058] See appendix Figure 16 , Figure 15 The axis of the transfer plate 0613 is line L1, and the axis of the transmission rod 062 is line L2. The intersection of L1 and L2 is the hinge point between the transfer plate 0613 and the transmission rod 062. The dashed line F1 represents the downward pulling force on the transmission rod 062. In this state, the axis of the transmission rod 062 is located to the right of the axis of the transfer plate 0613, that is, the center of gravity of the transmission rod 062 is located to the right of the center of gravity of the transfer plate 0613. The pulling force F1 pulls the transmission rod 062 downward, causing the transmission rod 062 to have a clockwise rotation tendency, but the limiting baffle 14 prevents the transmission rod 062 from rotating further.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A syringe filling machine for filling pastes, characterized in that, include: The housing (01) has an assembly hole on its top surface and a discharge block (02) is fixed inside the assembly hole. The discharge block (02) has multiple discharge channels (021) arranged perpendicular to the top surface of the housing (01). Needle holder (03), the needle holder (03) is fixed to the top of the housing (01); The needle tube (04) is multiple and can be detachably installed on the needle tube bracket (03), and the needle tip of each needle tube (04) can be inserted downward into the corresponding discharge channel (021); Material cylinder (05), which is arranged in the housing (01) corresponding to the discharge block (02), has a discharge hole (051) at the top and an open bottom. A lifting drive mechanism (06) is installed on the housing (01). The lifting end of the lifting drive mechanism (06) is detachably connected to the material cylinder (05) to drive the material cylinder (05) to rise so that the discharge hole (051) connects to multiple discharge channels (021). The pusher plate (07) is slidably limited to the inner wall of the material cylinder (05); The material tray lifting mechanism (08) is installed at the bottom of the machine housing (01) corresponding to the pusher plate (07), and its output end drives the pusher plate (07) to move upward to squeeze the material in the material cylinder (05) upward through the discharge channel (021) and fill it into the needle tube (04).

2. The syringe filling machine for filling ointments according to claim 1, characterized in that, The needle holder (03) includes a frame (031) and two mounting plates (032 and 033) horizontally fixed on the frame (031) from bottom to top. The frame (031) is fixed to the top of the housing (01) on the side corresponding to the discharge block (02). The side of the mounting plate (032) near the discharge block (02) is provided with multiple positioning slots (0321). The mounting plate (033) is provided with piston rod through holes (0331) corresponding to each positioning slot (0321). The syringe (041) of each needle (04) is limited to the corresponding positioning slot (0321) and the wing plate of the syringe (041) can abut against the lower plate surface of the mounting plate (033). The piston rod (042) of each needle (04) is limited to the corresponding piston rod through hole (0331) upward.

3. The syringe filling machine for filling ointments according to claim 2, characterized in that, It also includes a PLC controller (09) and a quantitative filling control mechanism (11). The needle holder (03) also includes an assembly plate three (034). The assembly plate three (034) is fixed parallel to the frame (031) above the assembly plate two (033). The quantitative filling control mechanism (11) includes: The rod (111) consists of multiple rods, which slide along the height direction of the housing (01) on the assembly plate three (034) and correspond one-to-one with the multiple needle tubes (04). The bottom of each rod (111) abuts against the top of the piston rod (042) of the corresponding needle tube (04). When the piston rod (042) rises, it can push the corresponding rod (111) to rise. The test block (112) is multiple and is located between the assembly plate three (034) and the assembly plate two (033). The multiple test blocks (112) are detachably installed on multiple rods (111) to position the filling amount of each needle (04). Position detectors (113), there are multiple position detectors (113) and they are all installed on the lower plate surface of the assembly plate three (034). The detection end of each position detector (113) is arranged facing the rod (111). Each position detector (113) is wirelessly connected to the PLC controller (09). When each position detector (113) detects the position information of the corresponding detected block (112), it sends a filling stop signal to the PLC controller (09). Material on / off controller (114), the number of material on / off controller (114) corresponds to the number of needles (04) and they are all installed on the top of the housing (01). The output end of each material on / off controller (114) is inserted into the discharge block (02) to control the material on / off in the corresponding discharge channel (021). Each material on / off controller (114) is electrically connected to the PLC controller (09).

4. A syringe filling machine for filling ointments according to claim 3, characterized in that, Each of the aforementioned material on / off controllers (114) includes: A rotating motor (1141) is fixed to the top of the housing (01) and arranged on one side of the discharge block (02). The rotating motor (1141) is electrically connected to the PLC controller (09). A rotating shaft (1142) is provided. One end of the rotating shaft (1142) is connected to the output shaft of the rotating motor (1141) via a coupling. The other end is inserted into the discharge block (02) and passes through the corresponding discharge channel (021). A radially arranged material passage hole is provided on the rotating shaft (1142). The rotation of the rotating shaft (1142) can connect or disconnect the discharge channel (021).

5. A syringe filling machine for filling ointments according to claim 4, characterized in that, It also includes a lifting mechanism (12), and the needle holder (03) further includes an assembly plate four (035), which is fixed parallel to and spaced on the frame (031) above the assembly plate three (034). The lifting mechanism (12) includes: Cylinder (121), the cylinder (121) is fixed on the upper surface of the four-piece assembly plate (035), and its telescopic rod extends downward through the four-piece assembly plate (035). The cylinder (121) is electrically connected to the PLC controller (09). The upper surface of the lifting plate (122) is fixedly connected to the telescopic rod of the cylinder (121). The top ends of the multiple rods (111) slide upward through the through holes on the lifting plate (122) and are fitted with limit bolts. When the telescopic rod of the cylinder (121) retracts, it can drive the lifting plate (122) to rise and lift the multiple rods (111) to facilitate the replacement of the needle tube (04).

6. A syringe filling machine for filling ointments according to claim 5, characterized in that, The tray lifting mechanism (08) includes: Hydraulic cylinder (081) is installed at the bottom of the housing (01) corresponding to the pusher plate (07), and its hydraulic rod is arranged upward to push the pusher plate (07). The hydraulic drive unit (082) is fixed inside the housing (01). The hydraulic drive unit (082) is connected to the hydraulic cylinder (081) by oil circuit control and is electrically connected to the PLC controller (09).

7. A syringe filling machine for filling ointments according to any one of claims 1 to 6, characterized in that, The feed cylinder (05) includes: The cylinder (052) is detachably connected to the lifting end of the lifting drive mechanism (06) and its top end is open. The cylinder head (053) is detachably installed on the top of the cylinder body (052). There are multiple discharge holes (051) and they are all opened on the cylinder head (053). The multiple discharge holes (051) correspond one-to-one with the multiple discharge channels (021).

8. A syringe filling machine for filling ointments according to claim 7, characterized in that, The lifting drive mechanism (06) includes: A hand-cranked drive unit (061) is mounted on the housing (01); A transmission rod (062) is located inside the housing (01) and is arranged perpendicularly to its top surface. The top end of the transmission rod (062) is hinged to the output end of the hand-cranked drive unit (061). The hand-cranked drive unit (061) can drive the transmission rod (062) to move up and down inside the housing (01). Support (063), the support (063) is located below the transmission rod (062) and is hinged to its bottom end; The lifting rod (064) is located inside the housing (01) and is arranged parallel to the transmission rod (062) and fixedly connected to the support (063). The cylinder (052) is detachably installed on the lifting rod (064) through the support frame (10).

9. A syringe filling machine for filling ointments according to claim 8, characterized in that, A guide seat (13) is installed inside the housing (01). A guide hole is provided on the guide seat (13) along the height direction of the housing (01). The lifting rod (064) is slidably limited in the guide hole.

10. A syringe filling machine for filling ointments according to claim 8, characterized in that, The hand-cranked drive unit (061) includes: Rotary drum (0611), one end of which is rotatably mounted on the housing (01); A rotating shaft (0612) is horizontally arranged inside the housing (01) and one end of the shaft is coaxially fixed inside the rotating cylinder (0611). Its rotation axis is arranged parallel to the top surface of the housing (01). A strip-shaped rotating plate (0613) has its first end vertically fixedly connected to the other end of the rotating shaft (0612), and its second end hinged to the top end of the transmission rod (062). The second end can rotate around the axis of the rotating shaft (0612) to drive the transmission rod (062) to move up and down. A hand crank (0614) is arranged on the outside of the housing (01) and inserted into the rotating drum (0611).

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