Cache device

Abstract

This utility model discloses a buffer device, relating to the technical field of automated production equipment for traditional Chinese medicine decoction. The buffer device includes a housing, a buffer platform, and a picking mechanism. The housing has an inlet and an outlet communicating with the inner cavity. The buffer platform, located inside the housing, holds the lids and features a positioning structure for precise positioning and orderly storage of the lids. The picking mechanism has a movable picking section that moves the lids from the inlet to the buffer platform and then transports them to the outlet. Through the coordinated layout of the inlet and outlet, combined with the positioning function of the buffer platform, stable temporary storage and anti-displacement positioning of the lids are achieved, avoiding abnormal feeding caused by disordered stacking. The automatic transfer function of the picking section enhances the automation of the lid supply process, effectively connecting the dispensing and decoction processes in the traditional Chinese medicine decoction production line, ensuring that lid supply is synchronized with the production cycle, reducing manual intervention, and improving the overall line efficiency and process continuity.

Description

Technical Field

[0001] This utility model relates to the technical field of automated production equipment for traditional Chinese medicine decoction, and in particular to a buffer device. Background Technology

[0002] In the automated production process of traditional Chinese medicine decoction, automated equipment has been widely adopted to achieve the weighing and proportioning of medicinal materials, decoction, slag removal, and liquid filling, significantly improving production efficiency and process controllability. In the actual production process, the medicine barrels are usually uncovered initially, and the lids are centrally stacked in a buffer area or sent to the buffer equipment via a feeding system. After the medicinal materials are added and the dispensing process is completed, the lids must be closed before entering the decoction section to ensure the airtightness and safety of the decoction process. Therefore, in automated production lines, there is an urgent need for a buffer device that can orderly store, manage, and supply lids. This device not only needs to have a certain capacity for temporary storage but should also be able to coordinate the supply rhythm of lids according to the production cycle, achieving neat arrangement, positioning, conveying, and orderly grasping of lids, ensuring that the lids can be installed on the open end of the medicine barrel in a timely and accurate manner at the lid-closing station. Utility Model Content

[0003] The main purpose of this invention is to propose a buffer device that can orderly store, manage, and supply bucket lids.

[0004] To achieve the above objectives, the present invention proposes a buffer device for storing the lid of a medicine barrel assembly, the buffer device comprising:

[0005] The housing is provided with an inlet and an outlet communicating with its internal cavity;

[0006] A buffer platform, disposed within the housing, is used to support the bucket lid. The buffer platform is provided with at least one positioning structure for positioning the bucket lid on the buffer platform; and...

[0007] The picking mechanism includes a picking section, which is movably configured to transport the bucket lid that has been transported to the corresponding feed port to the buffer platform, and to transport the bucket lid stored on the buffer platform from the discharge port.

[0008] In one embodiment, the positioning structure includes a positioning protrusion extending upward from the top of the buffer platform, the positioning protrusion being used to pass through a positioning hole on the bucket lid.

[0009] In one embodiment, the top of the positioning protrusion is tapered.

[0010] In one embodiment, the feed inlet and the discharge outlet are located on both sides of the housing in the lateral direction, and the buffer platform extends laterally.

[0011] The positioning protrusions are provided in multiple ways, and the multiple positioning protrusions are arranged at intervals in the horizontal direction.

[0012] In one embodiment, the picking unit includes two clamping arms that are movably arranged in directions of approaching and moving away from each other, for clamping the handle on the top of the bucket lid during a stroke in which they approach each other.

[0013] The sides of the two clamping arms that are close to each other are designed to fit the circumferential side of the handle of the bucket lid.

[0014] In one embodiment, a photoelectric sensor is provided on the pickup unit. The photoelectric sensor includes a photoelectric transmitter and a receiver respectively disposed on the two clamping arms. The photoelectric transmitter and the receiver are arranged opposite each other in the lateral direction for detecting the position of the handle on the top of the bucket lid.

[0015] In one embodiment, the feed inlet and the discharge outlet are located on both sides of the machine housing in the lateral direction, and the feed inlet and the discharge outlet are arranged downwards;

[0016] The pickup mechanism includes:

[0017] A first drive mechanism, mounted on the housing, includes a first drive section movably disposed laterally; and...

[0018] A second drive mechanism is installed on the first drive unit. The second drive mechanism includes a second drive unit that is movably arranged in the vertical direction, and the pickup unit is installed on the second drive unit.

[0019] In one embodiment, the first drive mechanism includes:

[0020] A first drive device is mounted on the housing. The first drive device has a first output shaft that is rotatably disposed about a longitudinally extending rotation axis.

[0021] Two tensioning rollers are spaced apart laterally and rotatably arranged about a longitudinally extending axis of rotation, wherein one of the tensioning rollers is coaxially connected to the first output shaft; and,

[0022] A transmission belt is wound around the periphery of the two tensioning pulleys to drive the two tensioning pulleys, and the first drive unit is provided on the transmission belt.

[0023] In one embodiment, the first drive mechanism further includes a first guide rail, which extends laterally.

[0024] The first drive unit is provided with a first guide groove that slides with the first guide rail.

[0025] In one embodiment, the second drive mechanism includes:

[0026] A second drive device is installed on the first drive unit. The second drive device has a second output shaft, which is rotatably arranged about a vertically extending rotation axis.

[0027] A drive rod extends vertically and is coaxially connected to the second output shaft; the drive rod is provided with an external thread; and,

[0028] The drive block is provided with an internal thread that is threadedly engaged with the drive rod. The drive block is connected to the pickup part so that when the drive rod is driven to rotate relative to the drive block by the second output shaft, the drive block drives the pickup part to move up and down.

[0029] In one embodiment, the picking mechanism further includes a second guide rail, which extends vertically.

[0030] The drive block is also provided with a second guide groove that slides with the second guide rail.

[0031] The technical solution of this utility model, by setting a housing with an inlet and an outlet, combined with a bearing structure of a buffer platform and a positioning structure, can realize the orderly temporary storage and precise positioning of barrel lids, avoiding feeding failures caused by disordered stacking; at the same time, by configuring a movable picking mechanism, it can automatically complete the transfer of barrel lids from the inlet to the buffer platform and from the buffer platform to the outlet, thereby improving the automation level of the lid supply process, facilitating the connection with the dispensing and decoction processes in the automated production line of traditional Chinese medicine decoction, and ensuring the synchronization of barrel lid supply with the production cycle. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0033] Figure 1 A schematic diagram of the structure of an embodiment of the cache device provided by this utility model;

[0034] Figure 2 for Figure 1 A schematic diagram of the internal structure of the cache device;

[0035] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0036] Figure 4 for Figure 1 A schematic diagram of the internal structure of the cache device;

[0037] Figure 5 for Figure 4 A magnified view of a section at point B in the middle.

[0038] Explanation of icon numbers:

[0039] 100. Buffer device; 1. Housing; a. Inlet; b. Outlet; 2. Buffer platform; 21. Positioning structure; 211. Positioning protrusion; 3. Pick-up mechanism; 31. Pick-up part; 311. Clamping arm; 41. Photoelectric transmitter; 42. Receiver; 5. First drive mechanism; 51. First drive part; 51a. First guide groove; 52. First drive device; 53. Tensioner wheel; 54. Transmission belt; 55. First guide rail; 6. Second drive mechanism; 61. Second drive part; 62. Second drive device; 63. Drive rod; 64. Drive block; 64a. Second guide groove; 65. Second guide rail;

[0040] 200. Bucket lid; 201. Handle; 201a. Positioning hole.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] This utility model proposes a buffer device 100, which aims to provide a buffer device capable of orderly storing, managing, and supplying bucket lids.

[0046] Please see Figures 1 to 3 In one embodiment of this utility model, the buffer device 100 includes a housing 1, a buffer platform 2, and a picking mechanism 3. The housing 1 is provided with an inlet a and an outlet b communicating with its inner cavity. The buffer platform 2 is disposed inside the housing 1 and is used to support the bucket lid 200. The buffer platform 2 is provided with at least one positioning structure 21, which is used to position the bucket lid 200 on the buffer platform 2. The picking mechanism 3 includes a picking part 31, which is movably disposed for transporting the bucket lid 200 transported to the corresponding inlet a to the buffer platform 2, and for transporting the bucket lid 200 stored on the buffer platform 2 out from the outlet b.

[0047] It should be noted that the casing 1 constitutes the external support structure of the equipment, forming a closed or semi-closed containment space to protect the internal components and prevent external interference and contamination. A feed inlet a is provided on one side of the casing 1, and a discharge outlet b is provided at an appropriate location on the opposite side or the same side. Both feed inlet a and discharge outlet b are connected to the inner cavity of the casing 1, enabling the flow of materials through the lid 200. Feed inlet a can connect to an upstream feeding device or a manual feeding station, while discharge outlet b connects to a downstream lid-closing station or conveyor line, ensuring smooth material flow.

[0048] The buffer platform 2 is located inside the housing 1 and is used to support multiple bucket lids 200 for stacking or side-by-side storage. The buffer platform 2 is provided with at least one positioning structure 21, which may be a boss, a limiting block, a guide groove, a positioning pin, or a magnetic adsorption element, for circumferential and / or axial limiting of the bucket lids 200 placed on the buffer platform 2 to prevent them from shifting, tipping, or being misaligned during storage or retrieval.

[0049] It should be noted that the number, layout and shape of the positioning structure 21 are adapted to the specific structure of the lid 200, such as using three-point positioning or symmetrical arrangement to ensure positioning accuracy and stability.

[0050] Furthermore, the specific form of the positioning structure 21 is not limited to this. Reliable positioning can also be achieved by elastic clamping, vacuum adsorption, etc. The specific form can be flexibly selected according to the material, weight and production environment of the lid 200. This specification does not limit this aspect in the embodiments.

[0051] The picking mechanism 3 is used to transfer the bucket lid 200 from the feed inlet a to the buffer platform 2, and from the buffer platform 2 to the discharge outlet b. The picking mechanism 3 includes a picking part 31, which is movably disposed inside the housing 1 and can achieve multi-degree-of-freedom movement through a slide rail, guide rod or robotic arm.

[0052] The picking unit 31 can employ actuators such as grippers, suction cups, push rods, or hook structures to accommodate different types of bucket lids 200. During operation, the picking unit 31 first moves to the feed inlet a position to receive the bucket lids 200 sent by the external conveying device, and then grabs or lifts them and moves them to the designated storage position on the buffer platform 2. When discharge is required, the picking unit 31 removes the topmost or preset position of the bucket lids 200 from the buffer platform 2 and transports them to the discharge port b for use by the downstream robotic arm or lid closing device.

[0053] The movement of the pickup unit 31 is controlled by a drive device, which can be a servo motor, stepper motor, or a transmission structure consisting of a cam, connecting rod, lead screw, synchronous belt, or linear motor to achieve precise displacement. This manual does not limit the specific structure of the drive device; it can be a cam shaft drive, connecting rod drive, lead screw structure, etc., which will not be described in detail here. The timing of the pickup action is synchronized with the cycle time of the automated production line, and coordinated and controlled by a PLC or industrial controller to ensure the continuity of material supply and the matching of the cycle time.

[0054] By setting up a housing 1 with an inlet a and an outlet b, combined with the bearing structure of the buffer platform 2 and the positioning structure 21, the bucket lid 200 can be temporarily stored in an orderly manner and positioned accurately, avoiding feeding failures caused by stacking disorder. At the same time, by configuring a movable picking mechanism 3, the bucket lid 200 can be automatically transferred from the inlet a to the buffer platform 2 and from the buffer platform 2 to the outlet b, thereby improving the automation level of the lid supply process, facilitating the connection with the dispensing and decoction processes in the automated production line for traditional Chinese medicine decoction, and ensuring the synchronization of the supply of bucket lid 200 with the production cycle.

[0055] Specifically, please refer to Figure 2 and Figure 3In this embodiment, the positioning structure 21 includes a positioning protrusion 211 extending upward from the top of the buffer platform 2, and the positioning protrusion 211 is used to pass through the positioning hole 201a on the bucket cover 200.

[0056] It should be noted that the positioning protrusion 211 can be cylindrical, stepped, or irregularly shaped, and is fixed vertically to the surface of the buffer platform 2. There can be one or more of these protrusions. When the picking unit 31 moves the lid 200 to the buffer platform 2, it controls the positioning hole 201a of the lid 200 to align with the positioning protrusion 211 and place it downwards, so that the positioning protrusion 211 is inserted into the hole, completing the positioning. When the lid 200 is removed, the picking unit 31 drives the lid 200 to rise axially, causing the positioning hole 201a to disengage from the positioning protrusion 211. This engagement method effectively prevents the lid 200 from rotating or shifting during storage, ensuring the accuracy of subsequent gripping actions.

[0057] It should also be noted that the positioning protrusion 211 can be installed on the buffer platform 2 by welding, threaded connection, or integral molding. The fit tolerance between the positioning hole 201a and the positioning protrusion 211 is set according to the actual assembly requirements to ensure smooth insertion and reliable positioning. Of course, the shape, height, and arrangement of the positioning protrusion 211 can be adjusted according to the structure of the bucket lid 200 and stacking requirements. For example, D-shaped posts, flat pins, or elastic guide structures can be used. The specific method can be determined according to the actual situation, and this specification does not limit this aspect. In multi-layer buffering or high-precision applications, guide ramps or visual guidance mechanisms can also be used to improve alignment efficiency.

[0058] By setting an upwardly extending positioning protrusion 211 on the buffer platform 2, which cooperates with the positioning hole 201a on the lid 200, the lid 200 can be installed quickly, accurately and stably positioned, effectively preventing it from shifting or tipping over during storage and transportation. Furthermore, the positioning structure 21 is simple and compact, easy to process and assemble, highly adaptable, and can be applied to buffering scenarios with lids 200 of different specifications.

[0059] Further, please refer to Figure 2 and Figure 4 In this embodiment, the top of the positioning protrusion 211 is tapered, that is, the cross-sectional area gradually decreases from bottom to top, forming a conical, frustum-shaped or arc-shaped guide section.

[0060] With this configuration, during the process of the bucket lid 200 being lowered from the pickup unit 31 to the buffer platform 2, the upper end of the positioning protrusion 211 acts as a guide. When there is a slight positional deviation between the positioning hole 201a on the bucket lid 200 and the positioning protrusion 211, the edge of the hole contacts the tapered surface. Through the guiding effect of the inclined surface, the bucket lid 200 is forced to automatically adjust towards the center during the falling process, thereby achieving offset correction. This improves the alignment accuracy between the positioning hole 201a and the positioning protrusion 211 and reduces the risk of jamming or misalignment caused by assembly errors.

[0061] Further, please refer to Figure 2 and Figure 4 In this embodiment, the feed inlet a and the discharge outlet b are located on both sides of the housing 1 in the horizontal direction, and the buffer platform 2 extends in the horizontal direction; multiple positioning protrusions 211 are provided, and the multiple positioning protrusions 211 are arranged at intervals in the horizontal direction.

[0062] It is understandable that the inlet a and outlet b are located on opposite sides of the casing 1 laterally, and the buffer platform 2 extends laterally, forming a through-type layout. This ensures that the flow path of the barrel lid 200 from inlet to outlet is linear, which is conducive to the orderly flow of materials. Multiple positioning protrusions 211 are arranged at intervals along the lateral side of the buffer platform 2, with each group corresponding to a storage station, so that multiple groups of barrel lids 200 can be arranged sequentially in the lateral direction.

[0063] The picking unit 31 can move along the transverse guide rail or the linear motion mechanism, mainly performing transverse translational movements, supplemented by necessary lifting operations, to complete the entire process of picking up the cover from the feed port a, placing it on the buffer platform 2, and picking up the cover from the buffer platform 2 and sending it to the discharge port b. Since the motion path is mainly transverse, the control logic is simple and the response speed is fast.

[0064] It should be noted that the spacing of the positioning protrusions 211 can be adjusted according to the size of the lid 200 and the production cycle, and the length of the buffer platform 2 and the number of workstations can also be set according to actual needs. Of course, the workstation layout can also adopt a non-linear arrangement, which can be determined according to the spatial layout and process requirements. This specification does not limit this embodiment.

[0065] Specifically, please refer to Figure 3 In this embodiment, the picking unit 31 includes two clamping arms 311, which are movably arranged in directions of approaching and moving away from each other, for clamping the handle 201 on the top of the bucket lid 200 during the approaching stroke; the sides of the two clamping arms 311 that approach each other are configured to be adapted to the peripheral side of the handle 201 of the bucket lid 200.

[0066] The picking unit 31 includes two relatively movable gripping arms 311 that move towards or away from each other to clamp and release the top handle 201 of the lid 200. The opening and closing of the gripping arms 311 is controlled by a drive mechanism, which can be a cylinder, an electric push rod, or a servo motor with a linkage, cam, or other transmission structure. This specification does not limit the specific structure of the drive device; it can be a cam shaft drive, a linkage drive, a lead screw structure, etc., which will not be described in detail here.

[0067] The two clamping arms 311 have a contour on their sides that matches the circumference of the handle 201 of the lid 200. For example, if the handle 201 is cylindrical, the inner side of the clamping arms 311 is provided with a corresponding arc-shaped surface to increase the contact area and improve clamping stability. When the clamping arms 311 move towards the center, the two sides clamp the handle 201, achieving reliable gripping and preventing slippage or displacement during transportation. The clamping force is adjustable to ensure a firm grip without damaging the handle 201.

[0068] The clamping arm 311 can be made of lightweight metal or high-strength plastic. The shape of its inner surface can be designed as arc-shaped, V-shaped, or flat according to the cross-section of the handle 201. An elastic pad can also be added to protect the surface of the handle 201. Of course, the specific form of the clamping structure can be adjusted according to the shape and material of the handle 201. It can be determined according to the actual situation, and this specification does not limit it in this way.

[0069] For further information, please refer to [link / reference]. Figure 3 In this embodiment, a photoelectric sensor is provided on the picking part 31. The photoelectric sensor includes a photoelectric transmitter 41 and a receiver 42 respectively disposed on the two clamping arms 311. The photoelectric transmitter 41 and the receiver 42 are arranged opposite each other in the horizontal direction and are used to detect the position of the handle 201 on the top of the bucket lid 200.

[0070] Thus, when the handle 201 enters between the two clamping arms 311, it blocks the light beam, the receiver 42 detects the signal change, and outputs a signal that the handle 201 is in position.

[0071] It should be noted that this signal is transmitted to the control system to confirm that the handle 201 is in the correct position, thereby triggering the closing action of the clamping arm 311, or to verify the gripping status after clamping, preventing empty clamping, missed clamping, or detachment. Through real-time detection, automatic triggering and process monitoring of the clamping operation can be achieved, improving the reliability of the operation.

[0072] It should also be noted that the photoelectric sensor can use an infrared light source, which has anti-interference capabilities and is suitable for industrial environments. Of course, reflective photoelectric sensors, proximity switches, or vision devices can also be used as alternatives, depending on the detection requirements and installation conditions. This specification does not limit this approach in the embodiments. The sensor signal is connected to the equipment controller to participate in automated logic control, improving the safety and intelligence level of the overall machine operation.

[0073] By setting a transverse photoelectric sensor on the clamping arm 311, the position of the handle 201 of the bucket lid 200 can be accurately detected, providing reliable position feedback and status judgment for the clamping action, effectively avoiding misoperation, and improving the automation level and operational stability of picking.

[0074] Further, please refer to Figure 2 , Figure 4 and Figure 5 In this embodiment, the feed inlet a and the discharge outlet b are located on both sides of the housing 1 in the horizontal direction, and the feed inlet a and the discharge outlet b are arranged downwards; the picking mechanism 3 includes a first driving mechanism 5 and a second driving mechanism 6. The first driving mechanism 5 is installed on the housing 1 and includes a first driving part 51 that is movably arranged in the horizontal direction; the second driving mechanism 6 is installed on the first driving part 51 and includes a second driving part 61 that is movably arranged in the vertical direction. The picking part 31 is installed on the second driving part 61.

[0075] The feed inlet a and the discharge outlet b are located on opposite sides of the machine casing 1, with the openings facing downwards. This facilitates the input from above and output from below through the barrel lid 200, optimizing the spatial layout and enabling connection with upstream and downstream equipment.

[0076] The pickup mechanism 3 includes a first drive mechanism 5 and a second drive mechanism 6. The first drive mechanism 5 is mounted on the housing 1, and its first drive part 51 is laterally movable, driving the pickup assembly to move horizontally between the feed inlet a and the discharge outlet b. This can be achieved using a synchronous belt, lead screw, or linear guide, etc. This specification does not limit the specific structure of the drive device; it can be a cam shaft drive, linkage drive, lead screw structure, etc., which will not be described in detail here.

[0077] The second drive mechanism 6 is mounted on the first drive unit 51. Its second drive unit 61 is movable in the vertical direction and is used to drive the picking unit 31 to rise and fall. The second drive unit 61 can be composed of a cylinder, an electric push rod, or a servo motor in conjunction with a guide component. The picking unit 31 is mounted at the end of the second drive unit 61. Through the coordinated lateral and vertical movements, it realizes the action of picking up the cover from below the feed port a, transferring it to the buffer platform 2, or directly sending it to below the discharge port b for release.

[0078] The two drive mechanisms are coordinated by the control system to adapt to different cycle time requirements. The drive type, installation method, and motion path can be adjusted according to the actual layout and determined based on the actual situation. This specification does not limit this aspect in the embodiments.

[0079] Specifically, please refer to Figure 2 and Figure 5 In this embodiment, the first driving mechanism 5 includes a first driving device 52, two tensioning rollers 53, and a transmission belt 54. The first driving device 52 is mounted on the housing 1 and has a first output shaft, which is rotatably arranged about a longitudinally extending axis of rotation. The two tensioning rollers 53 are spaced apart in the transverse direction and are rotatably arranged about a longitudinally extending axis of rotation. One of the tensioning rollers 53 is coaxially connected to the first output shaft. The transmission belt 54 is wrapped around the periphery of the two tensioning rollers 53 to drive the two tensioning rollers 53. The first driving part 51 is provided on the transmission belt 54.

[0080] The first drive device 52 is installed on the housing 1 and has a first output shaft that extends longitudinally and can rotate to output power. Its specific form can be a servo motor, a stepper motor, etc.

[0081] Two tensioning pulleys 53 are spaced apart laterally, with their rotation axes both along the longitudinal direction. One pulley is coaxially connected to the first output shaft as the driving pulley, and the other is the driven pulley. A transmission belt 54 is wound around the two tensioning pulleys 53 to form a closed transmission path. A synchronous belt or a friction belt can be used to transmit power. A first drive unit 51 is fixedly connected to the transmission belt 54, serving as the motion carrier of the pickup mechanism 3, and reciprocates laterally as the transmission belt 54 moves.

[0082] When the first drive unit 52 is activated, it drives the active tensioning pulley 53 to rotate, which in turn drives the transmission belt 54 to run. This causes the first drive unit 51 to move linearly between the two pulleys, achieving lateral positioning of the pickup unit 31. By controlling the direction and speed of the drive unit, the movement trajectory and speed can be precisely adjusted. The layout of the tensioning pulley 53, the preload of the transmission belt 54, and the connection method can be adjusted according to the load and stroke to ensure smooth and reliable transmission.

[0083] Further, please refer to Figure 5 In this embodiment, the first driving mechanism 5 further includes a first guide rail 55, which extends laterally; the first driving part 51 is provided with a first guide groove 51a that slides with the first guide rail 55.

[0084] The first guide rail 55 can be a linear guide rail, an I-beam rail, or a strip structure with protruding ridges, and its extension direction is consistent with the running direction of the transmission belt 54.

[0085] The first drive unit 51 is provided with a first guide groove 51a, which slides in conjunction with the first guide rail 55, so that the first drive unit 51 slides smoothly along the guide rail when it moves with the transmission belt 54. The cross-sectional shape of the guide groove is adapted to the guide rail, such as rectangular, dovetail or V-shaped, to realize multi-directional limiting during the movement process, prevent deflection, jumping or lateral displacement, and improve the running stability and positioning accuracy.

[0086] The cooperation between the guide rail and the guide groove can share the lateral load of the transmission belt 54, reduce the stress on the transmission belt 54, and improve the structural durability. The length of the guide rail is set according to the stroke requirements, and the fit clearance is adjusted according to the accuracy requirements to ensure smooth sliding and no looseness.

[0087] Of course, the guide structure can also be replaced by roller guide rails, linear bearing optical shafts or guide wheels, etc. The specific form can be determined according to the load-bearing capacity, accuracy and space conditions. This specification does not limit this in the embodiments.

[0088] Specifically, the second drive mechanism 6 uses a screw drive structure to realize the vertical movement of the pickup unit 31. The second drive device 62 is mounted on the first drive unit 51 and moves laterally with it. It has a second output shaft that extends vertically and is rotatably configured to output rotational power. The second drive device 62 can be a servo motor or a stepper motor, and its specific type is not limited. It can be selected according to the load and accuracy requirements. This specification does not limit the specific structure of the drive device. It can be a cam shaft drive, a linkage drive, a lead screw structure, etc., which will not be described in detail here.

[0089] The drive rod 63 extends vertically and is coaxially connected to the second output shaft, serving as a transmission screw with external threads on its outer circumference. The drive block 64 has internal threads that match those of the drive rod 63, engaging with it. When the second drive device 62 is activated, the second output shaft drives the drive rod 63 to rotate. Since the drive block 64 is limited and cannot rotate with it, it moves vertically along the axis of the drive rod 63 under the action of threaded transmission, thereby driving the pickup part 31 connected to it to achieve vertical lifting and lowering motion.

[0090] This structure converts rotary motion into linear motion, resulting in smooth transmission, high positioning accuracy, and a certain degree of self-locking capability, maintaining the stable position of the pickup unit 31 even in the event of power failure or when the system is stopped. The threaded engagement between the drive rod 63 and the drive block 64 can be a trapezoidal thread, a ball screw thread, or a standard thread, selected according to accuracy and load requirements.

[0091] For further information, please continue reading. Figure 5In this embodiment, the picking mechanism 3 includes a second guide rail 65, which extends vertically and is fixed to the mounting bracket of the first driving part 51 or the second driving device 62, serving as a guide reference for the vertical movement of the driving block 64. The second guide rail 65 can be a linear guide rail, a cylindrical guide post, or a strip structure with guide ridges, and its extension direction is parallel to the axis of the driving rod 63 to ensure the linearity of the lifting movement.

[0092] The drive block 64 is provided with a second guide groove 64a, which forms a sliding fit with the second guide rail 65, allowing the drive block 64 to move smoothly up and down along the guide rail direction under the action of threaded transmission. The cross-sectional shape of the second guide groove 64a is adapted to the second guide rail 65, such as rectangular, dovetail, or V-shaped, to achieve lateral limiting during the movement, prevent the drive block 64 from deflecting or shaking during the lifting and lowering process, and improve the stability of the movement and the positioning accuracy.

[0093] The cooperation between the second guide rail 65 and the second guide groove 64a effectively constrains the degree of freedom of the drive block 64, preventing it from rotating with the drive rod 63 and ensuring the reliability and predictability of the threaded transmission. Simultaneously, this guide structure can share the bending moment generated by external loads, reducing the stress on the screw and extending the life of the transmission pair.

[0094] Of course, the guide structure can also be replaced by linear bearings, roller assemblies or sliders, etc. The number of second guide rails 65 can be single or multiple, and the arrangement can be adjusted according to space and load-bearing requirements. The specific arrangement can be determined according to the actual situation, and the embodiments in this specification do not limit this.

[0095] By setting a second guide rail 65 extending vertically and slidingly engaging with a second guide groove 64a on the drive block 64, the rotational freedom of the drive block 64 is restricted and a stable guide is provided, ensuring the smoothness and accuracy of the lifting action during screw transmission, improving the reliability and repeatability of the pickup unit 31's movement, while also enhancing structural rigidity and reducing wear on transmission components.

[0096] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cache device (100) for storing a lid (200) of a drug cartridge assembly, characterized in that, The cache device (100) includes: The housing (1) is provided with an inlet (a) and an outlet (b) communicating with its inner cavity; A buffer platform (2), disposed within the housing (1), is used to support the bucket lid (200). The buffer platform (2) is provided with at least one positioning structure (21) for positioning the bucket lid (200) on the buffer platform (2); and, The picking mechanism (3) includes a picking part (31) which is movably provided for transporting the barrel cover (200) that is transported to the corresponding feed port (a) to the buffer platform (2) and for transporting the barrel cover (200) stored on the buffer platform (2) from the discharge port (b).

2. The cache device (100) of claim 1, characterized by The positioning structure (21) includes a positioning protrusion (211) extending upward from the top of the buffer platform (2), and the positioning protrusion (211) is used to pass through the positioning hole on the bucket lid (200).

3. The cache device (100) according to claim 2, characterized in that, The top of the positioning protrusion (211) is tapered.

4. The cache device (100) of claim 2, characterized by The feed inlet (a) and the discharge outlet (b) are located on both sides of the casing (1) in the horizontal direction, and the buffer platform (2) extends in the horizontal direction; Multiple positioning protrusions (211) are provided, and the multiple positioning protrusions (211) are arranged at intervals in the horizontal direction.

5. The cache device (100) of claim 1, characterized by The picking unit (31) includes two clamping arms (311) which are movably arranged in the directions of approaching and moving away from each other, for clamping the handle (201) on the top of the bucket lid (200) during the stroke of approaching each other. The sides of the two clamping arms (311) that are close to each other are configured to fit the circumferential side of the handle (201) of the bucket lid (200).

6. The cache device (100) of claim 5, characterized by The pickup part (31) is provided with a photoelectric sensor, which includes a photoelectric transmitter (41) and a receiver (42) respectively disposed on the two clamping arms (311). The photoelectric transmitter (41) and the receiver (42) are arranged opposite each other in the horizontal direction to detect the position of the handle (201) on the top of the bucket lid (200).

7. The cache device (100) of claim 1, characterized by The feed inlet (a) and the discharge outlet (b) are located on both sides of the machine casing (1) in the horizontal direction, and the feed inlet (a) and the discharge outlet (b) are arranged downwards; The picking mechanism (3) includes: A first drive mechanism (5) is mounted on the housing (1), the first drive mechanism (5) including a first drive part (51) movably disposed laterally; and, The second drive mechanism (6) is mounted on the first drive unit (51). The second drive mechanism (6) includes a second drive unit (61) that is movably arranged in the vertical direction. The pickup unit (31) is mounted on the second drive unit (61).

8. The cache device (100) of claim 7, characterized by The first drive mechanism (5) further includes: A first drive device (52) is mounted on the housing (1). The first drive device (52) has a first output shaft that is rotatably disposed about a longitudinally extending axis of rotation. Two tensioning rollers (53) are spaced apart laterally and rotatably arranged about a longitudinally extending axis of rotation, wherein one of the tensioning rollers (53) is coaxially connected to the first output shaft; and, A drive belt (54) is wound around the periphery of the two tensioning pulleys (53) to drive the two tensioning pulleys (53). The first drive unit (51) is provided on the drive belt (54).

9. The cache device (100) according to claim 8, characterized in that, The first drive mechanism (5) further includes a first guide rail (55), which extends laterally; The first drive unit (51) is provided with a first guide groove (51a) that slides with the first guide rail (55).

10. The cache device (100) as claimed in claim 7, characterized in that, The second drive mechanism (6) includes: A second drive device (62) is mounted on the first drive unit (51). The second drive device (62) has a second output shaft, which is rotatably arranged about a vertically extending rotation axis. A drive rod (63) extends vertically and is coaxially connected to the second output shaft; the drive rod (63) is provided with an external thread; and, The drive block (64) is provided with an internal thread and is threadedly engaged with the drive rod (63). The drive block (64) is connected to the pickup part (31) so that when the drive rod (63) is driven to rotate relative to the drive block (64) by the second output shaft, the drive block (64) drives the pickup part (31) to move up and down.

11. The cache device (100) as claimed in claim 10, characterized in that, The picking mechanism (3) further includes a second guide rail (65), which extends vertically. The drive block (64) is also provided with a second guide groove (64a) that slides with the second guide rail (65).

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