An automatic dispensing device for ointment production

Abstract

This application relates to an automatic dispensing device for ointment production, belonging to the technical field of pharmaceutical machinery. It includes a housing and a threaded rod. A guide rail is fixedly connected to the upper end of one side of the vertical plate. A lead screw is rotatably connected inside the guide rail. A moving block is threadedly connected to the outer wall of the lead screw. A threaded hole is formed through the moving block. A piston is fixedly connected to the bottom end of the threaded rod. A handle is fixedly connected to the upper end of the threaded rod. A dispensing tank is fixedly connected to one side of the vertical plate. A scale is fixedly provided on one side of the outer wall of the dispensing tank. This application has the effect of improving the dispensing accuracy of the ointment by rotating the handle, causing the threaded rod to rotate within the threaded hole, thereby adjusting the position of the piston inside the dispensing tank. The adjusted single dispensing volume can be observed through the scale on the outer wall of the dispensing tank. Subsequently, the lead screw drives the moving block to move, extruding the quantitatively set ointment inside the dispensing tank.

Description

Technical Field

[0001] This application relates to the technical field of pharmaceutical machinery, and in particular to an automatic dispensing device for ointment production. Background Technology

[0002] Ointments, as an important type of topical semi-solid preparation, are essentially made by uniformly mixing the active pharmaceutical ingredient with a suitable matrix according to a specific process to form a preparation with stable consistency and easy application. They are widely used in the field of local drug delivery to the skin and mucous membranes.

[0003] In the current ointment production process, the injection machine used usually uses a gear pump to transport raw materials. Although it can meet the basic quantitative conveying function, the gear pump transports materials through the meshing of gears, which can easily lead to the accumulation of materials in the dead corners between the gears, resulting in raw material waste. It may also cause the residual materials to deteriorate and cause contamination risks, thus failing to meet the pharmaceutical industry's requirements for sterile and high-precision production. Utility Model Content

[0004] The purpose of this application is to provide an automatic dispensing device for ointment production, which has the advantages of improving dispensing accuracy and being easy to clean. It solves the problem that the dispensing machines used in the existing ointment production process usually use gear pumps to transport raw materials. Although they can meet the basic quantitative conveying function, the gear pumps transport materials through the meshing of gears, which leads to the accumulation of materials in the dead corners between the gears, resulting in raw material waste. Furthermore, the residual materials may deteriorate and cause contamination risks, thus failing to meet the requirements of the pharmaceutical industry for sterile and high-precision production.

[0005] The automatic dispensing device for ointment production provided in this application adopts the following technical solution: it includes a chassis and a threaded rod. A vertical plate is fixedly connected to the upper end of the chassis. A guide rail is fixedly connected to the upper end of one side of the vertical plate. Two sliding rods arranged in a mirror distribution are fixedly connected inside the guide rail. A lead screw is rotatably connected inside the guide rail. A moving block is threadedly connected to the outer wall of the lead screw. A threaded hole is opened through the moving block. A piston is fixedly connected to the bottom end of the threaded rod. A handle is fixedly connected to the upper end of the threaded rod. A dispensing tank is fixedly connected to one side of the vertical plate. The piston is slidably disposed inside the dispensing tank. A scale is fixedly provided on one side of the outer wall of the dispensing tank.

[0006] By adopting the above technical solution, the upright plate provides stable installation support for the guide rail and the injection barrel. The slide rod inside the guide rail guides the moving block. When the screw rotates, the moving block moves smoothly along the slide rod. The threaded rod is threaded inside the threaded hole, so that when the moving block moves, it drives the threaded rod to move synchronously, thereby driving the piston to slide up and down in the injection barrel to realize the injection action. By rotating the handle, the threaded rod can be rotated inside the threaded hole, thereby adjusting the position of the piston inside the injection barrel. At the same time, the injection barrel is made of transparent material, and the scale on its outer wall allows the operator to clearly see the single injection volume, which is convenient for adjusting the injection volume according to different injection needs. In use, first, by rotating the handle, the threaded rod is rotated inside the threaded hole, thereby adjusting the position of the piston inside the injection barrel. The adjusted single injection volume can be observed through the scale on the outer wall of the injection barrel. Then, the screw drives the moving block to move, squeezing out the ointment that has been quantitatively set inside the injection barrel, thereby improving the injection accuracy of the ointment.

[0007] Preferably, a motor is fixedly connected to the upper end of the guide rail, and the output end of the motor passes through the guide rail and is fixedly connected to the lead screw via a coupling.

[0008] By adopting the above technical solution, the motor serves as the power source. When the motor starts, its output end can drive the lead screw to rotate inside the guide rail through the coupling, so that the rotation speed of the lead screw remains stable, ensuring that the piston slides at a uniform speed in the injection barrel, reducing injection errors, and making the injection process more stable.

[0009] Preferably, a discharge pipe is fixedly connected to the bottom of the injection barrel, a first one-way valve is fixedly connected to the bottom of the discharge pipe, an injection head is fixedly connected to the discharge end of the first one-way valve, an inlet pipe is fixedly connected to one side of the outer wall of the discharge pipe, and a second one-way valve is fixedly connected to the end of the inlet pipe away from the discharge pipe.

[0010] By adopting the above technical solution, the ointment in the injection tank can be transported to the injection head through the discharge pipe, and then accurately injected into the target container by the injection head. The first one-way valve can prevent the ointment from flowing back into the injection tank from the discharge pipe. At the same time, the feed pipe is used to replenish the ointment into the injection tank. The second one-way valve can prevent the raw materials in the injection tank from flowing back through the feed pipe, ensuring that the ointment can only enter the injection tank from the outside in one direction. In use, the piston moves upward, creating a negative pressure inside the injection tank, opening the second one-way valve, and closing the first one-way valve under the action of negative pressure. The ointment first enters the injection tank through the feed end of the second one-way valve and the feed pipe. Then, the piston moves downward, closing the second one-way valve and opening the first one-way valve, pushing the ointment through the discharge pipe, the first one-way valve, and the injection head into the target container.

[0011] Preferably, a raw material barrel is fixedly connected to the side of the upright plate away from the guide rail. Two first fixing ears arranged in a mirror image are fixedly connected to the upper end of the outer wall of the raw material barrel. A top cover is provided at the upper end of the raw material barrel. Two second fixing ears arranged in a mirror image are fixedly connected to the outer wall of the top cover. Fixing bolts are slidably arranged inside the two second fixing ears. The two fixing bolts pass through one end of the second fixing ears and are threadedly connected to the first fixing ears.

[0012] By adopting the above technical solution, the upright plate can provide stable support for the raw material barrel, while the top cover of the raw material barrel can prevent dust from falling into the barrel and contaminating the ointment inside. When it is necessary to open the top cover to replenish raw materials or clean the inside of the barrel, simply unscrew the fixing bolts to remove the top cover from the raw material barrel and add ointment. During installation, the top cover can be installed by passing the fixing bolts through the first fixing ear and threading them with the second fixing ear. This ensures the firmness of the connection between the top cover and the raw material barrel and allows for flexible disassembly, meeting the needs of daily maintenance and raw material replenishment.

[0013] Preferably, a vent cap is fixedly connected to the upper end of the cover.

[0014] By adopting the above technical solution, the setting of the vent cap can maintain the air pressure balance between the inside of the raw material barrel and the outside. When the ointment in the raw material barrel gradually decreases during the injection operation, a certain negative pressure will be formed inside the raw material barrel. At this time, outside air can enter the raw material barrel through the vent cap to balance the outside air pressure and avoid the situation where the raw material is not transported smoothly due to the low air pressure inside the barrel, thus ensuring the smooth transport of the ointment.

[0015] Preferably, a connecting pipe is fixedly connected to the bottom of the raw material barrel, and one end of the connecting pipe that passes through the vertical plate is fixedly connected to the feed port of the second one-way valve.

[0016] By adopting the above technical solution, the connecting pipe is used to connect the raw material tank and the injection tank, so that the ointment in the raw material tank can be directly transported to the second one-way valve through the connecting pipe, and then enters the feed pipe through the second one-way valve, and finally reaches the inside of the injection tank. In conjunction with the second one-way valve to prevent the ointment from flowing back, it can further ensure that the ointment can be continuously and smoothly transported from the raw material tank to the injection tank, ensuring the continuity of the injection operation.

[0017] Preferably, a receiving tray is fixedly connected to the upper end of the chassis, and a control panel is fixedly connected to one side of the chassis, the control panel being electrically connected to the motor.

[0018] By adopting the above technical solution, the receiving tray can collect any ointment that may drip during the injection process, preventing the ointment from falling directly onto the machine or the ground and causing waste. This facilitates subsequent cleaning and keeps the surrounding environment of the device clean. The control panel on one side of the machine can control the motor operation and adjust the motor speed, thereby improving the automation level of the device.

[0019] Preferably, the movable block is slidably disposed on the outer wall of the two slide rods, and the threaded rod is threadedly disposed inside the threaded hole.

[0020] By adopting the above technical solution, when the lead screw drives the moving block to move, the two slide rods can guide the moving block from both sides, preventing the moving block from deviating or shaking during the sliding process, making the pushing force during injection more uniform. At the same time, by using the threaded engagement between the threaded rod and the threaded hole, the position of the piston fixedly connected to the threaded rod inside the injection barrel can be adjusted by rotating the threaded rod, thereby changing the internal capacity of the injection barrel and realizing the quantitative filling of ointment. Due to the self-locking characteristics between the threads, the consistency of each injection can be guaranteed.

[0021] In summary, this application includes at least one of the following beneficial technical effects: This automatic dispensing device for ointment production, through a moving block, threaded hole, and threaded rod, combined with a transparent dispensing barrel and outer wall scale, allows for adjustment of the single dispensing volume. The operator can rotate the handle to drive the threaded rod to rotate inside the threaded hole. The interaction between the threaded hole and the threaded rod adjusts the piston's position inside the dispensing barrel. The scale provides a clear visual indication of the single dispensing volume. Subsequently, a motor drives a lead screw to rotate, causing the moving block to move along the outer wall of the slide rod, causing the piston to uniformly squeeze the ointment inside the dispensing barrel and uniformly discharge it from the outlet head. A first and second one-way valve prevent backflow of the ointment, improving dispensing accuracy. Furthermore, the piston's movement within the dispensing tube reduces ointment residue inside the tube. The smooth, non-protruding inner wall of the dispensing barrel reduces cleaning dead zones, improving cleaning efficiency and meeting the pharmaceutical industry's requirements for aseptic and high-precision production. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a schematic diagram of the material pushing device structure of this application; Figure 3 This is a schematic diagram of the material injection volume adjustment structure of this application. Figure 4 This is a schematic diagram of the raw material barrel structure of this application; Figure 5This is a side view of the overall structure of this application.

[0023] In the picture: 1. Chassis; 2. Vertical plate; 3. Guide rail; 4. Slide rod; 5. Lead screw; 6. Moving block; 7. Motor; 8. Threaded hole; 9. Threaded rod; 10. Piston; 11. Rotary handle; 12. Injection tank; 13. Discharge pipe; 14. First check valve; 15. Injection head; 16. Feed pipe; 17. Second check valve; 18. Scale; 19. Raw material tank; 20. First fixing ear; 21. Top cover; 22. Second fixing ear; 23. Fixing bolt; 24. Vent cap; 25. Connecting pipe; 26. Receiving tray; 27. Control panel. Detailed Implementation

[0024] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0025] Example 1: An automatic dispensing device for ointment production, referring to... Figure 1 , Figure 2 and Figure 3 The device includes a chassis 1 and a threaded rod 9. A vertical plate 2 is fixedly connected to the upper end of the chassis 1. A guide rail 3 is fixedly connected to the upper end of one side of the vertical plate 2. Two slide rods 4 arranged in a mirror image are fixedly connected inside the guide rail 3. A lead screw 5 is rotatably connected inside the guide rail 3. A moving block 6 is threadedly connected to the outer wall of the lead screw 5. The slide rods 4 inside the guide rail 3 guide the moving block 6. When the lead screw 5 rotates, the moving block 6 moves smoothly along the slide rods 4. A threaded hole 8 is opened through the moving block 6. A piston 10 is fixedly connected to the bottom end of the threaded rod 9. The threaded rod 9 is threaded inside the threaded hole 8, so that the moving block 6 can drive the threaded rod when it moves. The rod 9 moves synchronously, which in turn drives the piston 10 to slide up and down inside the injection barrel 12 to realize the injection action. The upper end of the threaded rod 9 is fixedly connected to the handle 11. By rotating the handle 11, the threaded rod 9 is driven to rotate inside the threaded hole 8, thereby adjusting the position of the piston 10 inside the injection barrel 12. The injection barrel 12 is fixedly connected to one side of the vertical plate 2. The piston 10 is slidably set inside the injection barrel 12. A scale 18 is fixedly set on one side of the outer wall of the injection barrel 12. The injection barrel 12 is made of transparent material. The scale 18 on its outer wall allows the operator to clearly see the amount of material injected at one time, which is convenient for adjusting the amount of material injected according to different injection needs.

[0026] Example 2: An automatic dispensing device for ointment production, referring to... Figure 2 , Figure 3 and Figure 5A motor 7 is fixedly connected to the upper end of the guide rail 3. The output end of the motor 7 passes through the guide rail 3 and is fixedly connected to the lead screw 5 via a coupling. The motor 7 serves as a power source. When the motor 7 starts, its output end can drive the lead screw 5 to rotate inside the guide rail 3 via the coupling, keeping the rotation speed of the lead screw 5 stable and ensuring that the piston 10 slides at a uniform speed in the injection barrel 12, reducing injection errors and making the injection process more stable. A discharge pipe 13 is fixedly connected to the bottom end of the injection barrel 12. A first one-way valve 14 is fixedly connected to the bottom end of the discharge pipe 13. An injection head 15 is fixedly connected to the discharge end of the first one-way valve 14. An inlet pipe 16 is fixedly connected to one side of the outer wall of the discharge pipe 13. A second one-way valve 17 is fixedly connected to the end of the inlet pipe 16 away from the discharge pipe 13. The ointment in the injection barrel 12 can be transported to the injection head 15 through the discharge pipe 13, and then injected by the injection head 15. The filler head 15 precisely injects the ointment into the target container. The first one-way valve 14 prevents the ointment from flowing back from the discharge pipe 13 into the filling tank 12. At the same time, the feed pipe 16 is used to replenish the ointment into the filling tank 12. The second one-way valve 17 prevents the raw materials in the filling tank 12 from flowing back through the feed pipe 16, ensuring that the ointment can only enter the filling tank 12 from the outside in one direction. In use, the piston 10 moves upward, creating a negative pressure inside the filling tank 12. The second one-way valve 17 opens, and the first one-way valve 14 closes under the action of negative pressure. The ointment first enters the filling tank 12 through the feed end of the second one-way valve 17 and the feed pipe 16. Then, the piston 10 moves downward, the second one-way valve 17 closes, and the first one-way valve 14 opens, pushing the ointment through the discharge pipe 13, the first one-way valve 14, and the filler head 15 into the target container.

[0027] Reference Figure 1 , Figure 4 and Figure 5A raw material barrel 19 is fixedly connected to the side of the upright plate 2 away from the guide rail 3. Two first fixing ears 20, arranged in a mirror image, are fixedly connected to the upper outer wall of the raw material barrel 19. A top cover 21 is provided at the upper end of the raw material barrel 19. Two second fixing ears 22, arranged in a mirror image, are fixedly connected to the outer wall of the top cover 21. Fixing bolts 23 are slidably disposed inside the two second fixing ears 22, and one end of each fixing bolt 23 passes through the second fixing ear 22 and is threadedly connected to the first fixing ear 20. The upright plate 2 provides stable support for the raw material barrel 19. The top cover 21 of the raw material container 19 prevents dust from falling into the container and contaminating the ointment inside. When it is necessary to open the top cover 21 to add raw materials or clean the inside of the container, simply unscrew the fixing bolt 23 to remove the top cover 21 from the raw material container 19, allowing for the addition of ointment. During installation, the top cover 21 is installed by passing the fixing bolt 23 through the first fixing ear 20 and threading it to the second fixing ear 22. This ensures a secure connection between the top cover 21 and the raw material container 19, as well as flexible disassembly, meeting the needs of daily maintenance and original equipment manufacturing. To meet the replenishment needs, a vent cap 24 is fixedly connected to the upper end of the cover 21. The vent cap 24 allows the internal pressure of the raw material container 19 to maintain a balance with the external pressure. As the ointment in the raw material container 19 gradually decreases during the filling operation, a certain negative pressure will form inside the container. At this time, outside air can enter the raw material container 19 through the vent cap 24 to balance the external air pressure, preventing the raw material from being obstructed due to excessively low internal pressure, thus ensuring the smooth delivery of the ointment. A connecting pipe 25 is fixedly connected to the bottom end of the raw material container 19. One end of the connecting pipe 25, which passes through the vertical plate 2, is fixedly connected to the inlet of the second one-way valve 17. The connecting pipe 25 is used to connect the raw material tank 19 and the injection tank 12, so that the ointment in the raw material tank 19 can be directly transported to the second one-way valve 17 through the connecting pipe 25, and then enter the feed pipe 16 through the second one-way valve 17, and finally reach the inside of the injection tank 12. In conjunction with the second one-way valve 17 to prevent the ointment from flowing back, it can further ensure that the ointment can be continuously and smoothly transported from the raw material tank 19 to the injection tank 12, ensuring the continuity of the injection operation.

[0028] Reference Figure 1 , Figure 2 and Figure 3A receiving tray 26 is fixedly connected to the upper end of the casing 1, and a control panel 27 is fixedly connected to one side of the casing 1. The control panel 27 is electrically connected to the motor 7. The receiving tray 26 is designed to collect any ointment that may drip during the dispensing process, preventing the ointment from falling directly onto the casing 1 or the ground and causing waste, facilitating subsequent cleaning and keeping the surrounding environment of the device clean. The control panel 27 on the side of the casing 1 controls the operation of the motor 7. The speed of the motor 7 can be adjusted through the control panel 27, improving the automation level of the device. The moving block 6 is slidably mounted on the outer wall of the two sliding rods 4, and the threaded rod 9 is screwed... The threads are set inside the threaded hole 8. When the lead screw 5 drives the moving block 6 to move, the two slide rods 4 can guide the moving block 6 from both sides, preventing the moving block 6 from deviating or shaking during the sliding process, so that the pushing force during injection is more uniform. At the same time, by using the threaded engagement between the threaded rod 9 and the threaded hole 8, the position of the piston 10 fixedly connected to the threaded rod 9 inside the injection barrel 12 can be adjusted by rotating the threaded rod 9, thereby changing the internal capacity of the injection barrel 12 and realizing the quantitative filling of ointment. Due to the self-locking characteristics between the threads, the consistency of each injection can be guaranteed.

[0029] The implementation principle of this application embodiment is as follows: During operation, firstly, by unscrewing the fixing bolt 23 of the upper cover 21 of the raw material barrel 19, the upper cover 21 is opened and ointment is added into the raw material barrel 19. After the addition is completed, the fixing bolt 23 is passed through the first fixing ear 20 and threadedly connected to the second fixing ear 22 to complete the installation of the upper cover 21. The vent cap 24 at the upper end of the raw material barrel 19 can balance the air pressure inside the barrel and avoid poor conveying due to air pressure imbalance during subsequent feeding. Then, the operator can rotate the handle 11 to drive the threaded rod 9 to rotate in the threaded hole 8 of the moving block 6, and adjust the position of the piston 10 in the injection barrel 12 in conjunction with the scale 18 on the outer wall of the transparent injection barrel 12 to determine the amount of material injected at one time. The motor 7 is controlled by the control panel 27. The output of the motor 7 drives the lead screw 5 in the guide rail 3 to rotate through the coupling. When the lead screw 5 rotates, it drives the moving block 6 connected to the outer wall thread to move smoothly along the two slide rods 4 in the guide rail 3. During the movement of the moving block 6, it drives the threaded rod 9 to move synchronously, thereby driving the piston 10 to slide upward in the injection tank 12, so that a negative pressure is generated in the injection tank 12. At this time, due to the negative pressure in the injection tank 12, the first one-way valve 14 is closed and the second one-way valve 17 is opened. The ointment in the raw material tank 19 is released through the connecting pipe 25 and the second one-way valve 17. 7 and feed pipe 16 draw the material into the injection tank 12. After the material is drawn, motor 7 reverses and screw 5 drives moving block 6 to move downward. Through threaded rod 9, piston 10 slides downward in injection tank 12. The downward sliding of piston 10 increases the pressure in injection tank 12. Due to the increased pressure, second check valve 17 closes and first check valve 14 opens. As piston 10 moves, ointment in injection tank 12 is injected into target container through discharge pipe 13 and first check valve 14 from injection head 15. Ointment dripping during injection is received by receiving tray 26 on machine box 1. During cleaning, water can be injected into the raw material tank 19, and then the device can be activated to allow the water to flow through the connecting pipe 25, the second one-way valve 17, and the feed pipe 16 into the injection tank 12. The piston 10 then slides to push the water through the discharge pipe 13 and the first one-way valve 14 to discharge it from the injection head 15. During this process, the water flow can rinse the inner walls of the raw material tank 19, the connecting pipe 25, the second one-way valve 17, the feed pipe 16, the injection tank 12, the discharge pipe 13, the first one-way valve 14, and the discharge head, cleaning away any residual ointment in each component and ensuring cleanliness for subsequent use.

Claims

1. An automatic dispensing device for ointment production, comprising a housing (1) and a threaded rod (9), characterized in that: The upper end of the chassis (1) is fixedly connected to a vertical plate (2). A guide rail (3) is fixedly connected to the upper end of one side of the vertical plate (2). Two slide rods (4) arranged in a mirror image are fixedly connected inside the guide rail (3). A lead screw (5) is rotatably connected inside the guide rail (3). A moving block (6) is threadedly connected to the outer wall of the lead screw (5). A threaded hole (8) is opened through the moving block (6). A piston (10) is fixedly connected to the bottom end of the threaded rod (9). A throttle (11) is fixedly connected to the upper end of the threaded rod (9). A filling barrel (12) is fixedly connected to one side of the vertical plate (2). The piston (10) is slidably arranged inside the filling barrel (12). A scale (18) is fixedly provided on one side of the outer wall of the filling barrel (12).

2. The automatic dispensing device for ointment production according to claim 1, characterized in that: A motor (7) is fixedly connected to the upper end of the guide rail (3), and the output end of the motor (7) passes through the guide rail (3) and is fixedly connected to the lead screw (5) through a coupling.

3. The automatic dispensing device for ointment production according to claim 1, characterized in that: The bottom end of the injection barrel (12) is fixedly connected to the discharge pipe (13), the bottom end of the discharge pipe (13) is fixedly connected to the first one-way valve (14), the discharge end of the first one-way valve (14) is fixedly connected to the injection head (15), the outer wall of the discharge pipe (13) is fixedly connected to the feed pipe (16), and the end of the feed pipe (16) away from the discharge pipe (13) is fixedly connected to the second one-way valve (17).

4. The automatic dispensing device for ointment production according to claim 1, characterized in that: The side of the upright plate (2) away from the guide rail (3) is fixedly connected to a raw material barrel (19). The upper part of the outer wall of the raw material barrel (19) is fixedly connected to two first fixing ears (20) arranged in a mirror distribution. The upper part of the raw material barrel (19) is provided with a top cover (21). The outer wall of the top cover (21) is fixedly connected to two second fixing ears (22) arranged in a mirror distribution. The two second fixing ears (22) are slidably provided with fixing bolts (23). The two fixing bolts (23) pass through one end of the second fixing ears (22) and are threadedly connected to the first fixing ears (20).

5. An automatic dispensing device for ointment production according to claim 4, characterized in that: A vent cap (24) is fixedly connected to the upper end of the cover (21).

6. An automatic dispensing device for ointment production according to claim 4, characterized in that: The bottom of the raw material barrel (19) is fixedly connected to a connecting pipe (25), and one end of the connecting pipe (25) that passes through the vertical plate (2) is fixedly connected to the feed port of the second one-way valve (17).

7. An automatic dispensing device for ointment production according to claim 1, characterized in that: The upper end of the chassis (1) is fixedly connected to a receiving tray (26), and a control panel (27) is fixedly connected to one side of the chassis (1). The control panel (27) is electrically connected to the motor (7).

8. An automatic dispensing device for ointment production according to claim 1, characterized in that: The movable block (6) is slidably disposed on the outer wall of the two slide rods (4), and the threaded rod (9) is threaded inside the threaded hole (8).

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