Dispensing machine

Abstract

The utility model belongs to the technical field of medicine dispensing equipment, and discloses a medicine dispensing machine which is characterized in that a plurality of bag opening holes are formed in a medicine dispensing turntable, and a bag making assembly and a sealing assembly are arranged on the rotating path of the medicine dispensing turntable; the first driving mechanism drives the outer forming device to be switched between the heat sealing position and the bag feeding position along the bag feeding path of the rolled film. A forming space for a roll film to pass through is formed between the inner forming device and the outer forming device; the sealing and cutting mechanism opens and closes to cut off the rolled film and thermally seals the bottom edge of the rolled film to form a film bag; the film rolling frame is used for storing vertically-sealed rolled films, and the vertically-sealed rolled films are guided into the forming space through the reversing mechanism. The end, close to the medicine dispensing rotary disc, of the outer forming device is a bearing part, the bearing part bears the film bag at the heat sealing position, and the outer forming device can be switched between the heat sealing position and the bag feeding position so as to jack the borne film bag to be separated from the sealing and cutting mechanism. When the medicine dispensing rotary table rotates, interference between the bottom sealing part of the film bag and the sealing and cutting mechanism can be effectively avoided, and therefore the situation that the film rolling and bottom sealing effect becomes poor is avoided.

Description

Technical Field

[0001] This invention belongs to the field of dispensing equipment technology, and particularly relates to a dispensing machine. Background Technology

[0002] Currently, there are two main types of dispensing machines used for Chinese herbal medicine granules: one is the boxed dispensing machine, which has been in use for many years. The main advantages of the boxed dispensing machine are high dispensing efficiency, stable and reliable operation, and miniaturization of the equipment. Its disadvantages are high cost per box and inconvenience in carrying. The other is the bagged dispensing machine, which uses food packaging bags, that is, dispensing one dose of medicine per bag. It has the advantages of low cost and convenient carrying.

[0003] Currently, some bagged medicine dispensing machines have the function of making bags, dispensing medicine, and sealing using pre-sealed film bags. During the bag making process, a film pulling mechanism is usually used to drive the film bag to move up and down, using intermittent forward and reverse motion to meet the continuous bag making requirements. However, the current structure is prone to interference between the bottom sealing part of the film bag and the sealing and cutting mechanism when the dispensing turntable rotates after the film is cut, thus affecting the heat sealing effect. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention discloses a dispensing machine that can effectively avoid interference between the bottom sealing part of the film bag and the sealing and cutting mechanism when the dispensing turntable rotates, thereby avoiding a deterioration in the sealing effect of the roll film.

[0005] A dispensing machine includes a dispensing turntable with a plurality of bag-supporting holes arranged along the rotation path of the dispensing turntable. A bag-making assembly and a sealing assembly are arranged along the rotation path of the dispensing turntable, and the bag-making assembly and the sealing assembly are located on the lower side of the dispensing turntable.

[0006] The bag-making assembly includes:

[0007] A film-pulling mechanism acts on the vertical sealing edge of the vertically sealed roll film to drive the roll film to reciprocate along the upper bag path;

[0008] An outer forming device and an inner forming device, wherein the inner forming device is disposed inside the outer forming device, and a forming space for film winding is formed between the inner forming device and the outer forming device;

[0009] A sealing and cutting mechanism is provided at the heat sealing position. The opening and closing movement of the sealing and cutting mechanism cuts the roll film and heat seals the bottom edge of the roll film to form a film bag.

[0010] The dispensing machine also includes a film roll holder and a reversing mechanism. The film roll holder is used to store vertically sealed film rolls, and the vertically sealed film rolls are guided into the forming space by the reversing mechanism.

[0011] The outer forming device has a receiving part at the end near the dispensing turntable. The receiving part receives the film bag at the heat-sealing position. The outer forming device can switch between the heat-sealing position and the upper bag position to lift the film bag it receives out of the sealing and cutting mechanism.

[0012] In the prior art, the film pulling mechanism drives the film roll into the bag support hole, and then seals and cuts the film roll to form a film bag. After the film bag is formed, a part of the film bag is still located inside the sealing and cutting mechanism. At this time, if the dispensing turntable rotates directly, the heat-sealed part of the film bag inside the sealing and cutting mechanism will interfere with the sealing and cutting mechanism. Therefore, the heat sealing function of the sealing and cutting mechanism will lead to a poor sealing effect of the film roll. However, in this application, after the film bag is formed, the outer forming device is used to lift the film bag, so that the film bag is completely removed from the range of the sealing and cutting mechanism. Therefore, when the dispensing turntable rotates, the film bag and the sealing and cutting mechanism are prevented from interfering with each other, thereby ensuring the preset heat sealing effect.

[0013] Preferably, the receiving part includes a first branch and a second branch arranged on opposite sides, the first branch and the second branch extending toward the dispensing turntable, and there is an accommodating gap between the first branch and the second branch.

[0014] The accommodating space between the first and second branches can limit the position of the receiving film bag, preventing the film bag from bending and failing to move upward when the receiving part contacts the film bag, thus causing the lifting failure. This better meets the driving requirements of the external forming device for the film bag.

[0015] Preferably, the inner forming device has a degree of freedom in the outer forming device along the direction of movement of the film bag;

[0016] The dispensing machine is equipped with a limiter to prevent the mandrel from falling out of the outer forming device.

[0017] Compared to a fixed inner forming device, this structure allows for easy disassembly and maintenance of the inner forming device.

[0018] Preferably, the dispensing machine is provided with at least one limiting member two arranged along the axis of the inner forming device for supporting the mandrel.

[0019] The second limiting member can stably support the inner forming device, so that the inner forming device only has a degree of freedom in the direction of movement along the film bag.

[0020] Preferably, the sealing assembly includes:

[0021] A sealing mechanism, wherein the opening and closing movement of the sealing mechanism seals the film bag;

[0022] The bag-transfer mechanism has an opening and closing motion to pick up the film bag that has been filled with medicine in the bag support hole, and can switch between the bag clamping position and the sealing position so that the bag-transfer mechanism can transfer the film bag to the sealing position.

[0023] The moving mechanism moves under the dispensing turntable, which can adapt well to the overall structure of the dispensing machine. Its structure is simple, and it can quickly realize the displacement of the film bag and make the film bag accurately positioned at the sealing position so that the sealing mechanism can seal the film bag.

[0024] Preferably, the sealing assembly further includes:

[0025] The bag inserter is located on one side of the sealing mechanism. The bag inserter can switch between a clearance position and a mating position. The bag inserter has a bag insertion gap. When the bag inserter switches from the clearance position to the mating position, the bag insertion gap passes through the film bag to reduce the opening of the film bag.

[0026] The insert plate can reduce the opening of the film bag, so that the sealing mechanism can better seal the film bag and avoid uneven heat sealing at the opening of the film bag, which would lead to air leakage and / or an unsightly appearance.

[0027] Preferably, the sealing mechanism includes:

[0028] A bag-pressing unit, which has an opening and closing motion to press the film bag located at the sealing position at the pressing position;

[0029] The sealing unit opens and closes to seal the compressed film bag;

[0030] A linkage unit is provided between the bag pressing unit and the sealing unit. The linkage unit drives the bag pressing unit and the sealing unit to move synchronously, and drives the sealing unit to continue moving when the bag pressing unit closes.

[0031] The bag-pressing unit can stabilize the position of the film bag and avoid incomplete sealing during the sealing process. The linkage unit enables the bag-pressing unit and the sealing unit to work together. Compared with the separate driving of the bag-pressing unit and the sealing unit, the linkage between the two through the mechanical structure can effectively avoid action errors and reduce design and manufacturing costs.

[0032] Preferably, the bag-pressing unit includes two bag-pressing components arranged opposite to each other, and the sealing unit includes two sealing components arranged opposite to each other. The bag-pressing components and sealing components correspond one-to-one, and an intermediate component is provided between the bag-pressing components and sealing components on the same side. The bag-pressing components and intermediate components on the same side slide in the opening and closing direction.

[0033] The linkage unit includes two movable components that can move relative to each other. The two movable components open and close to drive the two bag pressing components and the two sealing components to open and close. The sealing components and the movable components on the same side slide together in the opening and closing direction.

[0034] An elastic element one is provided between the pressure bag component and the intermediate component on the same side, and an elastic element two is provided between the intermediate component and the moving component on the same side.

[0035] When the two moving parts move towards each other, the two pressing parts and the two sealing parts move towards each other. When the two pressing parts contact and clamp the film bag, the two pressing parts are relatively stationary while the two sealing parts continue to move towards each other, thereby sealing the film bag. During this process, elastic element one deforms and compresses, keeping the two pressing parts pressing the film bag and ensuring that the two sealing parts can continue to move towards each other. When heat-sealing the film bag, elastic element two deforms, giving a greater force to the heat-sealing process to ensure the heat-sealing effect. Afterward, the two moving parts move away from each other, and elastic element two and elastic element one recover in sequence, thereby achieving heat sealing of the film bag. This structure is reasonably designed and the movement process is simple.

[0036] Preferably, the two moving parts are designated as moving part one and moving part two.

[0037] The linkage unit also includes a slide rod and a third moving part. The second moving part is located between the first moving part and the third moving part. The first moving part, the second moving part, and the third moving part are all slidably connected to the slide rod.

[0038] The first moving part and the third moving part are fixedly connected by a connecting rod.

[0039] This structure is reasonable. By making good use of the overall volume of the dispensing machine, it can effectively reduce the thickness of the sealing mechanism, thereby optimizing the structural layout of the dispensing machine.

[0040] Preferably, the linkage unit further includes a cam, a first power rod, and a second power rod. One end of the first power rod is hinged to the second moving part and the other end is hinged to the cam. One end of the second power rod is hinged to the third moving part and the other end is hinged to the cam. The cam is located between the second and the third moving parts.

[0041] The structure is simple and has high power transmission efficiency, which can effectively ensure the relative movement capability of the bag pressing unit and the sealing unit.

[0042] Compared with existing technologies, this invention can improve the heat sealing effect of the film bag and avoid motion interference between the bottom of the film bag and the sealing and cutting mechanism. At the same time, this invention can complete the bag making action while sealing the bag, thereby improving the bag making efficiency. This invention achieves simultaneous action through multiple workstations, thereby effectively improving the dispensing efficiency of the dispensing machine, reducing bag making waiting time, and saving time costs. Attached Figure Description

[0043] Figure 1 This is a front view of an embodiment of the present invention;

[0044] Figure 2 This is a top view of an embodiment of the present invention;

[0045] Figure 3 This is a front view of the bag-making assembly in an embodiment of the present invention;

[0046] Figure 4 This is a top view of the bag-making assembly in an embodiment of the present invention;

[0047] Figure 5 This is a schematic diagram illustrating the arrangement of the outer forming device in an embodiment of the present invention;

[0048] Figure 6 This is a schematic diagram of the outer forming device and the inner forming device in an embodiment of the present invention;

[0049] Figure 7 This is a schematic diagram of the sealing and cutting mechanism in an embodiment of the present invention;

[0050] Figure 8 This is a front view of the sealing component in an embodiment of the present invention;

[0051] Figure 9 This is a top view of the sealing assembly in an embodiment of the present invention;

[0052] Figure 10 This is a partial schematic diagram of the bag-pressing unit and the sealing unit in an embodiment of the present invention.

[0053] In the diagram: 100-Drug dispensing turntable; 200-Bag making assembly; 300-Sealing assembly; 1-Bag support hole; 2-Film pulling mechanism; 3-Outer forming device; 4-Inner forming device; 5-Film roll frame; 6-Limiting component two; 7-Support one; 8-Support two; 9-Accommodation gap; 10-Cutter; 11-Heat insulation plate one; 12-Sealing and cutting mold one; 13-Connecting component; 14-Sealing and cutting mold two; 15-Groove; 16-Heat insulation plate two; 17-Bag transfer mechanism; 18-Bag insertion plate; 19-Bag pressing component; 20-Sealing component; 21-Intermediate component; 22-Elastic component one; 23-Elastic component two; 24-Moving component one; 25-Moving component two; 26-Slide rod; 27-Moving component three; 28-Cam; 29-Power rod one; 30-Power rod two; 31-Slide bag plate; 32-Connecting rod. Detailed Implementation

[0054] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to specific embodiments.

[0055] like Figures 1-6As shown, a dispensing machine includes a dispensing turntable with multiple bag-supporting holes 1 arranged along its rotation path. A bag-making assembly 200 and a sealing assembly 300 are arranged along the rotation path of the turntable, located below the turntable. The bag-making assembly 200 includes a film-pulling mechanism 2, an outer forming device 3, an inner forming device 4, and a sealing and cutting mechanism. The film-pulling mechanism 2 acts on the vertically sealed edge of the pre-sealed roll film to drive the roll film to reciprocate along the upper bag path. Movement; the inner forming device 4 is disposed inside the outer forming device 3, and a forming space for the film roll to pass through is formed between the inner forming device 4 and the outer forming device 3; the sealing and cutting mechanism is disposed at the heat sealing position, and the opening and closing movement of the sealing and cutting mechanism cuts the film roll and heat seals the bottom edge of the film roll to form a film bag; the end of the outer forming device 3 near the dispensing turntable is a receiving part, and the receiving part receives the film bag at the heat sealing position. The outer forming device 3 can switch between the heat sealing position and the upper bag position to lift the film bag it receives out of the range of the sealing and cutting mechanism.

[0056] The outer forming device 3 has a driving mechanism to drive the outer forming device 3 to switch between the heat sealing position and the upper bag position along the upper bag path of the roll film. In this embodiment, the dispensing machine also includes a film roll holder 5 and a reversing mechanism. The film roll holder 5 is used to store the vertically sealed film rolls, which are guided into the forming space by the reversing mechanism. The film pulling mechanism 2 includes at least one set of film pulling wheels. The film pulling wheels squeeze the vertical edge of the film roll and drive the film roll up and down by friction. In specific use, the film pulling wheels first drive the film roll part into the bag supporting hole 1, and then use the sealing and cutting mechanism to make the film bag by the film rolling action. Then, the outer forming device 3 moves upward from the heat sealing position to receive the film bag and drives the film bag to the upper bag position, so that the film bag is basically completely inserted into the bag supporting hole 1. The film bag is fixed by the pressing mechanism in the bag supporting hole 1, thereby completing the bag making and bag mounting. After that, the outer forming device 3 moves downward to reset, while the film pulling wheel moves in the opposite direction to move the remaining film roll downward. Since the sealing and cutting mechanism will cause the mouth of this part of the film bag to be crushed, the mouth of this part of the film bag can be reopened by the inner forming device 4. In this embodiment, the up-and-down movement of the outer forming device 3 can be achieved through a telescopic mechanism, a lead screw mechanism, a gear and rack mechanism, etc.

[0057] In this embodiment, the inner forming device 4 is a mandrel, which has the freedom to move up and down within the outer forming device 3. The dispensing machine is equipped with a first limiting member to prevent the mandrel from falling out of the outer forming device 3, thus facilitating the disassembly of the mandrel for maintenance. The first limiting member can be a pair of rotatable rollers. The dispensing machine is also equipped with a second limiting member 6, which can be multiple, to stably support the mandrel, ensuring that the mandrel only has the freedom of movement along the direction of the film bag.

[0058] like Figure 5As shown, in this embodiment, the receiving part includes a first branch 7 and a second branch 8 arranged on opposite sides. The first branch 7 and the second branch 8 extend towards the dispensing turntable, and there is an accommodating gap 9 between the first branch 7 and the second branch 8. Furthermore, the distance between the first branch 7 and the second branch 8 gradually increases towards the dispensing turntable. The accommodating gap 9 is funnel-shaped towards the dispensing turntable, and therefore has inclined sidewalls. Even if the lifting of the receiving part causes the film bag to curl, it can still maintain the drive of the film bag. It should be noted that the bag support hole 1 has a retaining structure, which can keep the film bag in an open state. Therefore, even if the bottom of the film bag curls, it can remain open after it has basically completely entered the bag support hole 1 to meet the dispensing requirements. Furthermore, a sensor is provided on one side of the bag making assembly 200 to detect whether a film bag is held in the bag support hole 1 when the assembly rotates to the bag making assembly 200. If there is no film bag, the bag making assembly 200 is started to make a bag.

[0059] In this embodiment, as Figure 7 As shown, the sealing and cutting mechanism includes a heat-sealing unit one and a heat-sealing unit two that can move in opposite directions. Heat-sealing unit one includes a heating element and a cutter 10, which cuts the roll film. When the roll film is transported to the sealing and cutting mechanism, the mechanism performs a heat-sealing cut on the roll film. Above the cutter 10 is the film bag with a sealed bottom, while below the cutter 10 is the roll film that is only vertically sealed. In this embodiment, heat-sealing unit one and heat-sealing unit two move synchronously, enabling them to clamp the film bag and, while heat-sealing, also cut the roll film at a specific position by the cutter 10.

[0060] In this embodiment, the heat-sealing unit one further includes a heat insulation plate one 11 and a sealing and cutting mold one 12; the sealing and cutting mold one 12 and the heat insulation plate one 11 are connected by a connector 13 to move synchronously relative to the heat-sealing unit two; in the axial direction of the mandrel, the sealing and cutting mold one 12 is located above the heat insulation plate one 11, and there is an isolation strip between them; the cutter 10 is disposed in the isolation strip. The heat-sealing unit two includes a sealing and cutting mold two 14, which has a groove 15 that abuts against the isolation strip. When the sealing and cutting mold one 12 and the sealing and cutting mold two 14 come into contact, the cutter 10 continues to move, transitioning from the isolation strip to the groove 15, thereby cutting the film bag within the groove 15, thus ensuring that the cutter 10 cuts the film bag. The sides of the sealing and cutting mold two 14 and the sealing and cutting mold one 12 that are in contact with each other have a serrated structure to better achieve film roll stop. When the sealing and cutting mold 12 and the sealing and cutting mold 14 come into contact, the cutter 10 acts on the roll film to achieve cutting. During the cutting process, the isolation strip between the sealing and cutting mold 12 and the heat insulation plate 11 can prevent heat from being conducted to the roll film below the cutter 10, thereby preventing the opening of this part of the roll film from being compressed and then heat-sealed. It can be seen that the heat insulation plate 11 can also clamp the roll film on the basis of heat insulation. That is to say, the end face of the heat insulation plate 11 also has a serrated structure that matches the end face of the sealing and cutting mold 14. Furthermore, a heat insulation plate 16 is provided between the connecting member 13 and the sealing and cutting mold 12. When the connecting member 13 is driven, the heat insulation plate 16 moves synchronously. Thus, during the heat-sealing process, the setting of the heat insulation plate 11 and the heat insulation plate 16 better prevents the film bag below the cutter 10 from being heat-sealed.

[0061] Therefore, during the actual bag making process, the vertically sealed roll film passes through the film roll holder 5 and the reversing mechanism, and then enters the forming space to open. The vertical sealing edge of the roll film is pressed by the film pulling mechanism 2. The film pulling mechanism 2 operates by moving the roll film up and down under the action of friction force through forward and reverse rotation to achieve film feeding. The roll film is below the sealing and cutting mechanism and remains open. The film pulling mechanism 2 rotates forward to feed the open roll film into a bag-supporting hole 1 on the upper bag turntable. The bag-supporting hole 1 has the same function as the outer forming device 3, always keeping the bag opening open. The roll film is equipped with segmented black marks so that the sensor 1 can detect the position of the film bag. Therefore, the film pulling mechanism 2 pulls the roll film into the bag-supporting hole 1 at a height of 1. The process stops when the sensor detects the next printed black mark; the sealing and cutting mechanism closes, and the toothed blade in the middle pushes out to cut the roll film; at this time, the bottom of the upper bag is compressed, and its length is greater than the inner cavity of the outer forming device 3, so the bag can be lifted by the outer forming device 3 and thus get out of the range of the sealing and cutting mechanism. At this time, the pressing mechanism at the bag support hole 1 presses the fed bag tightly and prevents it from falling off; while the outer forming device 3 pushes the bag, the film pulling mechanism 2 reverses and pulls the lower roll film downward, and reopens under the action of the top of the inner forming device 4 to keep the opening open, waiting for the next bag to be loaded until multiple bags on the bag loading turntable are loaded.

[0062] like Figures 8-10As shown, in this embodiment, the sealing assembly 300 includes a bag sealing mechanism and a bag transferring mechanism 17. The bag sealing mechanism opens and closes to seal the film bag. The bag transferring mechanism 17 opens and closes to pick up the film bag that has been dispensed into the bag support hole 1, and can switch between a bag clamping position and a sealing position so that the bag transferring mechanism 17 can transfer the film bag to the sealing position. In this embodiment, the bag transferring mechanism 17 can be implemented by a robotic arm. In this embodiment, the bag transferring mechanism 17 is a gripping component, and can be moved up and down through a telescopic mechanism, a lead screw mechanism, or a gear and rack mechanism, thereby meeting the requirements for clamping and driving the film bag. When the film bag that has been dispensed is transferred to the sealing assembly 300 via the dispensing turntable, the bag transferring mechanism 17 is first driven to clamp the bottom of the film bag. Then, the pressing mechanism in the bag support hole 1 releases the film bag, and the bag transferring mechanism 17 moves the film bag to the sealing position so that the opening of the film bag is within the effective range of the bag sealing mechanism. Then, the bag sealing mechanism heat seals the opening of the film bag. After completion, the bag-transfer mechanism 17 releases the film bag, which slides off the sliding plate 31 on the dispensing machine, allowing the dispensing personnel to remove the sealed film bag after medication application. To better seal the film bag, the sealing assembly 300 also includes a bag-inserting plate 18, located on one side of the sealing mechanism. The bag-inserting plate 18 switches between a clearance position and a mating position, and has an insertion gap. When the bag-inserting plate 18 switches from the clearance position to the mating position, the insertion gap passes through the film bag to narrow its opening. When the film bag is in the sealing position, the bag-inserting plate 18 is pushed out by a lead screw cylinder, passing through the entire sealing area of ​​the film bag, narrowing the open opening within the insertion gap of the bag-inserting plate 18, thus preventing wrinkles at the opening of the film bag during sealing. After heat sealing, the bag-inserting plate 18 retracts.

[0063] In this embodiment, the sealing mechanism includes a pressing unit and a sealing unit. The pressing unit opens and closes to press the film bag located at the sealing position at the pressing position. The sealing unit opens and closes to seal the pressed film bag. A linkage unit is provided between the pressing unit and the sealing unit. The linkage unit drives the pressing unit and the sealing unit to move synchronously, and drives the sealing unit to continue moving when the pressing unit closes. The linkage unit realizes the coordinated action of the pressing unit and the sealing unit through a mechanical structure. Compared with the separate driving method using a single sensor, it effectively reduces the detection error and motion error caused by vibration, thereby better meeting the specific working requirements of sequential pressing and sealing. Furthermore, the bag-pressing unit includes two bag-pressing components 19 arranged opposite each other, and the sealing unit includes two sealing components 20 arranged opposite each other. The bag-pressing components 19 and sealing components 20 correspond one-to-one. An intermediate component 21 is provided between the bag-pressing components 19 and sealing components 20 on the same side. The bag-pressing components 19 and intermediate components 21 on the same side slide in the opening and closing direction. The linkage unit includes two moving components that can move relative to each other. The two moving components open and close to drive the two bag-pressing components 19 and the two sealing components 20 to open and close. The sealing components 20 and moving components on the same side slide in the opening and closing direction. An elastic component 1 22 is provided between the bag-pressing components 19 and intermediate components 21 on the same side, and an elastic component 23 is provided between the intermediate components 21 and moving components on the same side.The opening and closing motion of the moving parts can be achieved by a gear and rack mechanism or by a lead screw mechanism with two opposing threads. In this embodiment, the two moving parts are named moving part one 24 and moving part two 25. The linkage unit also includes a slide rod 26 and a moving part three 27. Moving part two 25 is located between moving part one 24 and moving part three 27. Moving part one 24, moving part two 25, and moving part three 27 are all slidably connected to the slide rod 26. To maintain stability, the slide rod 26 has two parallel rods, that is, moving part one 24, moving part two 25, and moving part three 27 are slidably connected to the two slide rods 26. Moving part one 24 and moving part three 27 are fixedly connected by a connecting rod 32. That is, when moving part three 27 slides along the slide rod 26, the motion is transmitted through the connecting rod 32. The power source causes the first moving part 24 to slide synchronously and in the same direction along the slide bar 26. The linkage unit also includes a cam 28, a first power rod 29, and a second power rod 30. One end of the first power rod 29 is hinged to the second moving part 25, and the other end is hinged to the cam 28. One end of the second power rod 30 is hinged to the third moving part 27, and the other end is hinged to the cam 28. The cam 28 is located between the second moving part 25 and the third moving part 27. Thus, when the cam 28 rotates around its own central axis, the second moving part 25 and the third moving part 27 are driven to move towards each other or away from each other according to the rotation direction of the cam 28. This allows the first moving part 24 and the second moving part 25 to move towards each other or away from each other. This structure is reasonable. While making reasonable use of the overall volume of the dispensing machine, it can effectively reduce the thickness of the sealing mechanism, thereby optimizing the structural layout of the dispensing machine.

[0064] Therefore, in actual use, after the medicine is dispensed into the film bag in a certain bag support hole 1, the medicine dispensing turntable rotates, driving the film bag to one side of the sealing mechanism. The bag transfer mechanism 17 switches to the bag clamping position, closes the bag clamp, and at the same time, the pressing mechanism releases the film bag. Without the clamping of the pressing mechanism, the film bag switches to the sealing position with the bag transfer mechanism 17. The sealing assembly 300 needs to go through two stages to complete the sealing action. The first action: Cam 28 rotates, causing moving rod one and moving rod two to drive moving part one 24 and moving part two 25 to move towards each other. At this time, the two pressing parts 19 close and the elastic part one 22 collapses and is pressed tightly. At this time, the vertical sealing edge of the film bag at the sealing position is tightly pressed by the pressing part 19. The insert plate 18 passes through the entire sealing area of ​​the film bag, so that the open bag opening is reduced within the insert gap of the insert plate 18, so that no wrinkles are generated at the bag opening when sealing. The second action: Moving part one 24 and moving part two 25 continue to drive, so that the two sealing parts 20 close until the elastic part two 23 collapses, thereby better sealing the bag. After the bag is sealed, the insert plate 18 returns to its initial position, the cam 28 reverses, the two sealing parts 20 separate, and the elastic part 23 returns to its original position. Then the two pressing parts 19 separate, the elastic part returns to its original position, and the sealing parts 20 and pressing parts 19 return to their initial positions. Then the bag transfer mechanism 17 opens and moves to below the sliding bag plate 31. After the bag transfer mechanism 17 opens, the film bag slides freely into the medicine dropping frame below the dispensing machine under the action of gravity and the sliding bag plate 31, and is then taken out by the dispensing personnel.

[0065] Furthermore, the dispensing machine is also equipped with a second sensor to detect whether the film bag has fallen off. If the film bag is not detected to have fallen off after sealing, the control system will prompt the dispensing personnel. If the film bag is detected to have fallen off after sealing, the control system will also prompt the dispensing personnel to retrieve the bag. Finally, the printer will print out the prescription, which will then be given to the patient by the dispensing personnel.

[0066] In this embodiment, the dispensing turntable has N bag-supporting holes 1 arranged along its rotation path, where N is an integer greater than or equal to 2. The bag-making assembly 200 and the sealing assembly 300 are arranged symmetrically with respect to the axis of the dispensing turntable, and at least one dispensing assembly is also arranged along the rotation path of the dispensing turntable. It is understood that, generally, this embodiment can perform bag making simultaneously with dispensing, thus effectively saving bag-making time. In this embodiment, bag making can also be performed simultaneously with sealing, thus further saving bag-making time. It is also understood that each bag-supporting hole 1 is also equipped with a sensor 3 to obtain information on whether a film bag is pressed tightly in the bag-supporting hole 1.

[0067] In this embodiment, the dispensing machine makes and seals the bags using the following method:

[0068] Method 1: When the dispensing turntable rotates 360 / N° along the first direction each time, if there is a film bag in more than N / 2 bag support holes 1, if sensor 1 detects that there is no film bag in the bag support hole 1 corresponding to the bag making assembly 200, then the bag making assembly 200 is started to make bags, and at the same time the sealing assembly 300 seals the film bag in the bag support hole 1.

[0069] In Method 1, the rotation of the dispensing turntable causes the bag-supporting holes 1, arranged in a circular array, to correspond one by one to the bag-making assembly 200 or the sealing assembly 300 in the first direction. The number of film bags present in the dispensing turntable is obtained by the sensor 3. For example, let N be 28. When the number of film bags in the dispensing turntable is not less than 15 (including 15), the bag-making assembly 200 starts making bags. At this time, the dispensing turntable can maintain multiple spare film bags waiting to be dispensed, thereby improving the dispensing efficiency.

[0070] Method 2: After the sealing assembly 300 seals two film bags consecutively, the dispensing turntable rotates 180° in the first direction. Sensor 1 detects that there is no film bag in the corresponding bag support hole 1 of the bag making assembly 200 at this time, and starts the bag making assembly 200 to make bags. At the same time, the sealing assembly 300 seals the film bag in the corresponding bag support hole 1 at this time. Then the dispensing turntable rotates 360 / N° in the first direction to seal the film bag at the sealing assembly 300 at this time. The above steps are repeated to complete the sealing of all film bags.

[0071] In Method 2, the dispensing turntable is driven in a more abrupt manner, which ensures that film bags are promptly replenished into the bag support hole 1 after the bag is removed, thereby ensuring that a certain number of film bags are available in each dispensing process, thus ensuring dispensing efficiency.

[0072] Both methods described above can effectively reduce bag-making time, thereby improving the dispensing efficiency of the dispensing machine. These two methods can coexist; based on actual needs, the control system compares the times taken by Method 1 and Method 2, and selects the one with the shortest dispensing time. The control system is a computer.

[0073] The above are merely preferred embodiments of the present invention. It should be noted that the above preferred embodiments should not be considered as limitations on the present invention, and the scope of protection of the present invention should be determined by the scope defined in the claims. For those skilled in the art, several improvements and modifications can be made without departing from the spirit and scope of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A dispensing machine, characterized in that, The device includes a dispensing turntable, which has multiple bag-supporting holes arranged along its rotation path. A bag-making assembly and a sealing assembly are arranged along the rotation path of the dispensing turntable, and the bag-making assembly and the sealing assembly are located on the lower side of the dispensing turntable. The bag-making assembly includes: A film-pulling mechanism acts on the vertical sealing edge of the vertically sealed roll film to drive the roll film to reciprocate along the upper bag path; An outer forming device and an inner forming device, wherein the inner forming device is disposed inside the outer forming device, and a forming space for film winding is formed between the inner forming device and the outer forming device; A sealing and cutting mechanism is provided at the heat sealing position. The opening and closing movement of the sealing and cutting mechanism cuts the roll film and heat seals the bottom edge of the roll film to form a film bag. The dispensing machine also includes a film roll holder and a reversing mechanism. The film roll holder is used to store vertically sealed film rolls, and the vertically sealed film rolls are guided into the forming space by the reversing mechanism. The outer forming device has a receiving part at the end near the dispensing turntable. The receiving part receives the film bag at the heat-sealing position. The outer forming device can switch between the heat-sealing position and the upper bag position to lift the film bag it receives out of the sealing and cutting mechanism.

2. The dispensing machine as described in claim 1, characterized in that, The receiving part includes a first branch and a second branch arranged on opposite sides, the first branch and the second branch extending toward the dispensing turntable, and there is an accommodating gap between the first branch and the second branch.

3. A dispensing machine as described in claim 1, characterized in that, The inner forming device has a degree of freedom in the outer forming device along the direction of movement of the film bag; The dispensing machine is equipped with a limiter to prevent the mandrel from falling out of the outer forming device.

4. A dispensing machine as described in claim 3, characterized in that, The dispensing machine is provided with at least one limiting member 2 arranged along the axis of the inner forming device for supporting the mandrel.

5. A dispensing machine as described in claim 1, characterized in that, The sealing assembly includes: A sealing mechanism, wherein the opening and closing movement of the sealing mechanism seals the film bag; The bag-transfer mechanism has an opening and closing motion to pick up the film bag that has been filled with medicine in the bag support hole, and can switch between the bag clamping position and the sealing position so that the bag-transfer mechanism can transfer the film bag to the sealing position.

6. A dispensing machine as described in claim 5, characterized in that, The sealing assembly also includes: The bag inserter is located on one side of the sealing mechanism. The bag inserter can switch between a clearance position and a mating position. The bag inserter has a bag insertion gap. When the bag inserter switches from the clearance position to the mating position, the bag insertion gap passes through the film bag to reduce the opening of the film bag.

7. A dispensing machine as described in claim 5, characterized in that, The sealing mechanism includes: A bag-pressing unit, which has an opening and closing motion to press the film bag located at the sealing position at the pressing position; The sealing unit opens and closes to seal the compressed film bag; A linkage unit is provided between the bag pressing unit and the sealing unit. The linkage unit drives the bag pressing unit and the sealing unit to move synchronously, and drives the sealing unit to continue moving when the bag pressing unit closes.

8. A dispensing machine as described in claim 7, characterized in that, The bag-pressing unit includes two bag-pressing components arranged opposite to each other, and the sealing unit includes two sealing components arranged opposite to each other. The bag-pressing components and sealing components correspond one to one. An intermediate component is provided between the bag-pressing components and sealing components on the same side. The bag-pressing components and intermediate components on the same side slide together in the opening and closing direction. The linkage unit includes two movable components that can move relative to each other. The two movable components open and close to drive the two pressing components and the two sealing components to open and close. The sealing components and the movable components on the same side slide together in the opening and closing direction. An elastic element one is provided between the pressure bag component and the intermediate component on the same side, and an elastic element two is provided between the intermediate component and the moving component on the same side.

9. A dispensing machine as described in claim 8, characterized in that, Let the two moving parts be moving part one and moving part two, respectively; The linkage unit also includes a slide rod and a third moving part. The second moving part is located between the first moving part and the third moving part. The first moving part, the second moving part, and the third moving part are all slidably connected to the slide rod. The first moving part and the third moving part are fixedly connected by a connecting rod.

10. A dispensing machine as described in claim 9, characterized in that, The linkage unit also includes a cam, a first power rod, and a second power rod. One end of the first power rod is hinged to the second moving part and the other end is hinged to the cam. One end of the second power rod is hinged to the third moving part and the other end is hinged to the cam. The cam is located between the second and the third moving parts.

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