Auxiliary bag opening mechanism, dispensing equipment and control method of dispensing equipment

Abstract

The invention provides an auxiliary bag opening mechanism, dispensing equipment and a control method of the dispensing equipment. The auxiliary bag opening mechanism comprises a bag opening lifting driving assembly and a bag opening execution assembly installed at the working end of the bag opening lifting driving assembly. The bag opening execution assembly comprises a bag opening guide structure which comprises two bag opening sliding ways arranged side by side, and bag opening sliding blocks are arranged in the two bag opening sliding ways respectively. The pair of bag opening rods are arranged below the bag opening guide structure and are respectively mounted on the two bag opening slide blocks; the bag opening execution driving structure is used for driving the bag opening slide block to reciprocate along the bag opening slide way; and in the extending direction of the bag opening execution driving structure, the two bag opening slide ways comprise sections which are gradually close to each other and then gradually far away from each other. Through the arrangement, the bag opening rod can be driven to be folded firstly so as to ensure that the bag opening rod can be inserted into a medicine bag from a bag opening, then the bag opening rod is driven to move along the bag opening slide way and be gradually opened, the bag opening can be stably opened, and it is ensured that follow-up materials can accurately fall into the medicine bag.

Description

Technical Field

[0001] This invention belongs to the field of material preparation technology, specifically relating to an auxiliary bag opening mechanism, a preparation device, and a control method for the preparation device. The preparation device is suitable for preparing granular formulations and powders. Background Technology

[0002] Dispensing refers to the process of quantitatively adding materials (granular formulations, powders) from a large container to a medicine bag. Before and after dispensing, numerous other operations are required, such as medicine bag production, bag conveying and transportation, bag sealing, and bag placement. One of the core functions of dispensing equipment is to prepare medicine bags using a bag-making device and push the prepared bags (without a sealed top) to a bag-holding mechanism for subsequent material filling and sealing processes. The smooth opening of the bag opening after entering the bag-holding mechanism is a crucial prerequisite for ensuring the continuous and efficient operation of subsequent processes.

[0003] In existing dispensing equipment, when the medicine bag holding mechanism moves to the bag dispensing station, the prepared, unsealed medicine bag enters the medicine bag holding mechanism from the bottom. The medicine bag holding mechanism then squeezes the two sides of the medicine bag, opening the top of the bag. For example, Chinese invention patent application number CN202110394997.3 discloses a dispensing system for granular products.

[0004] However, during the pushing process, the medicine bags are easily affected by factors such as pushing force, their own material (such as thin plastic film), and static electricity. After entering the medicine bag holding mechanism, the bag opening often closes and does not open, or the bag opening is biased to one side. This makes it impossible for the subsequent dispensing cabinet to accurately deliver the material into the bag, resulting in material spillage.

[0005] In view of this, the present invention is proposed. Summary of the Invention

[0006] This invention provides an auxiliary bag opening mechanism, which aims to solve the problem that after the medicine bag enters the medicine bag holding mechanism, the bag opening is often closed but not opened or the bag opening is biased to one side.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: an auxiliary bag opening mechanism, comprising: a bag opening lifting drive assembly, and a bag opening execution assembly installed at the working end of the bag opening lifting drive assembly; the bag opening execution assembly comprises: a bag opening guide structure, including two bag opening slides arranged in parallel, and a bag opening slider is respectively arranged in the two bag opening slides; a pair of bag opening rods, arranged below the bag opening guide structure, and respectively installed on the two bag opening sliders; a bag opening execution drive structure, used to drive the bag opening sliders to reciprocate along the bag opening slides; along the extending direction of the bag opening execution drive structure, the two bag opening slides include sections that gradually approach each other and then gradually move away from each other.

[0008] Furthermore, the bag opening slide is strip-shaped, and the extension path of the bag opening slide is a smooth curve; from the first end to the second end of the two bag opening slides, the two bag opening slides include a first curved section that gradually approaches each other and a second curved section that gradually moves away from each other, and the second curved section is smoothly connected to the first curved section; preferably, the second end of the two bag opening slides is also provided with a third curved section that gradually approaches each other, and the third curved section is smoothly connected to the second curved section; preferably, when the bag opening slider is located at the connection of the first curved section and the second curved section, the two bag opening rods are in contact.

[0009] Furthermore, the bag-opening rod includes: a bag-opening rod support body for connecting with the bag-opening slider; and a bag-opening rod working part that extends downward from the bottom of the bag-opening support body and is sheet-shaped; the thickness of the bag-opening rod working part gradually decreases along the downward extension direction.

[0010] Furthermore, the downward extension length of the working part of the first opening rod is greater than the downward extension length of the working part of the second opening rod; the lower end of the working part of the first opening rod is provided with a blocking part that protrudes and extends towards the side where the second opening rod is located, the blocking part is used to block the gap between the working parts of the first opening rod and the second opening rod when the opening slider is located at the connection of the first curved section and the second curved section; preferably, at least the lower end of the working part of the first opening rod extends obliquely towards the first end or the second end of the opening slide; along the oblique direction of the lower end of the working part of the first opening rod, the thickness of the lower end of the working part of the first opening rod gradually decreases.

[0011] Furthermore, a vertically penetrating guide connecting shaft is provided at the opening rod support of the two opening rods, and the opening rod support of the two opening rods is slidably engaged with the guide connecting shaft; and / or, an elastic element is provided between the opening rod support of the two opening rods for driving the two opening rods to move closer or further apart.

[0012] Furthermore, the bag opening transmission connection structure between the working end of the bag opening execution drive structure and the bag opening slider includes: a bag opening transmission connection block, fixed on the working end of the bag opening execution drive structure; and two swing rods, one end of which is hinged to the bag opening transmission connection block, and the other end of which is hinged to the two bag opening sliders.

[0013] Furthermore, the bag opening slide is a strip-shaped opening, and an annular boss is provided on the inner edge of the strip-shaped opening; the bag opening slider abuts against the annular boss; or, the annular boss is used to pre-install the bag opening slider, and the bag opening slider is suspended on the working end of the bag opening execution drive structure through the bag opening transmission connection structure, and is spaced apart from the annular boss.

[0014] Furthermore, a lifting position detection component is provided between the main body of the bag opening lifting drive component and the working end of the bag opening lifting drive component, and the lifting position detection component is electrically connected to the bag opening lifting drive component; a bag opening position detection component is provided between the main body of the bag opening execution drive structure and the working end of the bag opening execution drive structure, and the bag opening position detection component is electrically connected to the bag opening execution drive structure.

[0015] The present invention also provides a dispensing device, including a transmission module, on which a medicine bag holding mechanism for carrying medicine bags is installed; the dispensing device further includes the aforementioned auxiliary bag opening mechanism; preferably, the auxiliary bag opening mechanism is installed above the bag dispensing station of the dispensing device; preferably, the bag opening execution component is configured with: a working position, in which the lower end of the bag opening rod extends at least partially into the medicine bag holding mechanism; and a reset position; the bag opening rod is configured with: a first position, in which the bag opening slider is located in the middle of the bag opening slide, and the two bag opening rods are in contact; a second position, in which the bag opening slider is located at the first end of the bag opening slide, and the two bag opening rods are spaced apart; and a third position, in which the bag opening slider is located at the second end of the bag opening slide, and the two bag opening rods are spaced apart.

[0016] The present invention also provides a control method for the above-mentioned dispensing equipment, wherein the bag-making device of the dispensing equipment sequentially performs vertical sealing, horizontal sealing and cutting of the pre-folded film; the control method includes: S1: The bag-making device pushes the pre-folded film that has been vertically sealed upwards by a certain length, and the pre-folded film part enters the medicine bag holding mechanism; S2: The bag opening execution component moves to the working position; at this time, the bag opening rod is in the first position, and the lower end of the bag opening rod is spaced apart from the upper end of the pre-folded film, or the lower end of the bag opening rod is at least partially inserted into the pre-folded film; S3: The bag-making device completes the horizontal sealing and cutting of the pre-folded film to produce a medicine bag, and pushes the produced medicine bag upward. The medicine bag holding mechanism fixes the medicine bag. S4: The bag opening lever completes at least one switch from the first position to the second position and at least one switch from the first position to the third position; S5: The bag opening execution component moves to the reset position; Alternatively, the control method includes: after the medicine bag holding mechanism fixes the medicine bag, the bag opening execution component moves to the working position, and then, after the bag opening lever completes at least one switch from the first position to the second position and at least one switch from the first position to the third position, the bag opening execution component moves to the reset position.

[0017] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art.

[0018] 1. This invention, by setting two opening slides in the bag opening guide structure to have sections that "gradually approach and then gradually move away", can use the bag opening execution drive structure to drive the bag opening slider to move back and forth along the opening slide, thereby driving a pair of opening rods to achieve the action of closing and opening. Thus, after the medicine bag enters the medicine bag holding mechanism or during the process of entering the medicine bag holding mechanism, the opening rods can first close to ensure that the medicine bag can be inserted from the bag opening. After the medicine bag enters the medicine bag holding mechanism, the opening rods move along the opening slide and gradually open, which can smoothly open the bag opening to ensure that the subsequent material can fall accurately into the medicine bag.

[0019] 2. By providing a blocking part that protrudes and extends towards the side where the second opening rod is located at the lower end of the working part of the first opening rod, the present invention can block the gap between the working parts of the first and second opening rods when the opening rod enters the medicine bag, thus preventing the medicine bag from getting stuck in the gap and improving the working stability of the auxiliary opening mechanism.

[0020] 3. In this invention, the bag-opening transmission connection structure enables the simultaneous driving of two bag-opening sliders by the bag-opening execution drive structure, ensuring smooth operation. Furthermore, by setting a gap between the bag-opening slider and the annular boss, this invention reduces the friction between the bag-opening slider and the bag-opening track, further improving the smoothness of the auxiliary bag-opening mechanism.

[0021] 4. By setting up a bag-making device to push the medicine bag in segments, the present invention can guide the pushing process of the medicine bag with the bag opening rod, avoid the bag opening from deviating to one side, and improve the opening effect of the auxiliary bag opening mechanism on the medicine bag.

[0022] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] The accompanying drawings, as part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation of the invention. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the auxiliary bag-opening mechanism in an embodiment of the present invention; Figure 2 This is an embodiment of the present invention. Figure 1 Enlarged view at point E in the middle; Figure 3 This is a top view of the bag-opening guide support body in an embodiment of the present invention; Figure 4This is a cross-sectional view of the bag-opening transmission connection structure and the bag-opening rod connection structure in an embodiment of the present invention; Figure 5 This is a first schematic diagram of the cooperative structure of the working part of the first bag-opening rod and the working part of the second bag-opening rod in an embodiment of the present invention. Figure 6 This is a second schematic diagram of the cooperative structure of the working part of the first bag-opening rod and the working part of the second bag-opening rod in an embodiment of the present invention. Figure 7 This is a schematic diagram of the structure of the auxiliary bag opening mechanism and the medicine bag holding mechanism cooperating when the bag opening rod is in the first position in an embodiment of the present invention; Figure 8 This is a schematic diagram of the structure of the auxiliary bag opening mechanism and the medicine bag holding mechanism when the bag opening rod is in the second position in an embodiment of the present invention; Figure 9 This is a schematic diagram of the structure of the auxiliary bag opening mechanism and the medicine bag holding mechanism when the bag opening rod is in the third position in an embodiment of the present invention; Figure 10 This is a cross-sectional view of the structure of the auxiliary bag opening mechanism and the medicine bag holding mechanism when the bag opening rod is in the third position in an embodiment of the present invention; Figure 11 This is a schematic diagram of the bag-making device in an embodiment of the present invention.

[0024] Key components in the diagram: 2-1, Film roll support and feeding mechanism; 2-11, Film roll support and feeding mechanism bracket; 2-12, Film roll support assembly; 2-13, Film unwinding assembly; 2-131, Unwinding traction structure; 2-132, Floating roller group; 2-14, Film shaping assembly; 2-15, Film guide roller; 2-16, Color mark sensor; 2-17, U-shaped sensor; 2-2, Sealing and cutting mechanism; 2-21, Sealing and cutting mechanism bracket; 2-211, First support wall; 2-212, Second support wall; 2-23, Sealing and cutting feed assembly; 2-231, First sealing and cutting feed support plate; 2-232, Second sealing and cutting feed support plate; 2-233, First sealing and cutting feed... Guide structure; 2-234, Second sealing and cutting feed guide structure; 2-5, Film feeding mechanism; 2-6, Film roll; 2-61, Pre-folded film; 2-81, Sealing and cutting mechanism lifting drive structure; 2-82, Sealing and cutting mechanism lifting guide structure; 2-83, Carrier plate; 3-1, Bag opening lifting drive assembly; 3-11, Main body of bag opening lifting drive assembly; 3-12, Working end of bag opening lifting drive assembly; 3-2, Bag opening execution assembly; 3-21, Bag opening guide structure; 3-210, Bag opening guide support body; 3-211, Bag opening slide; 3-2111, First bending section; 3-2112, Second bending section; 3-2113, Third bending section; 3-2 114. Annular boss; 3-212. Bag opening slider; 3-22. Bag opening rod; 3-221. Bag opening rod support; 3-222. Bag opening rod working part; 3-2221. Bag opening rod working part of the first bag opening rod; 3-22211. First edge; 3-22212. Second edge; 3-22213. Third edge; 3-22214. Fourth edge; 3-2222. Bag opening rod working part of the second bag opening rod; 3-223. Blocking part; 3-224. Guide connecting shaft; 3-225. Elastic element; 3-23. Bag opening execution drive structure; 3-231. Main body of bag opening execution drive structure; 3-232. Working part of bag opening execution drive structure End; 3-24, Bag opening transmission connection structure; 3-241, Bag opening transmission connecting block; 3-242, Swing rod; 3-243, Bag opening transmission connecting plate; 3-2441, Plug bolt; 3-2442, First flange bearing; 3-2443, Second flange bearing; 3-2444, First bushing; 3-2445, Second bushing; 3-2451, Shaft of the second hinge shaft; 3-2452, Third flange bearing; 3-2453, Fourth flange bearing; 3-4, Bag opening position detection assembly; 3-41, Second photoelectric sensor; 3-42, Second baffle; 3-43, Second photoelectric sensor bracket; 4, Medicine bag holding mechanism; 46, Bag pressing block.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of this invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0028] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0029] like Figures 1 to 10 As shown in the embodiment of the present invention, an auxiliary bag opening mechanism is introduced, comprising a bag opening lifting drive assembly 3-1 and a bag opening execution assembly 3-2. The bag opening execution assembly 3-2 is installed at the working end 3-12 of the bag opening lifting drive assembly. The bag opening execution assembly 3-2 includes a bag opening guide structure 3-21, a pair of bag opening rods 3-22, and a bag opening execution drive structure 3-23.

[0030] The bag-opening lifting drive assembly 3-1 extends vertically and is used to drive the entire bag-opening execution assembly 3-2 to move up and down, so that the bag-opening rod 3-22 of the bag-opening execution assembly 3-2 inserts into and disengages from the medicine bag holding mechanism 4. In this embodiment, the bag-opening lifting drive assembly 3-1 can be a crank-slider drive assembly, a screw motor drive assembly, or a cylinder, hydraulic cylinder, etc.

[0031] In some specific embodiments, the bag-opening lifting drive assembly 3-1 includes a bag-opening mechanism support back plate, on which a first guide rail is mounted, and a first guide slider slidably engages with the first guide rail. The first guide rail extends vertically, and the bag-opening execution assembly 3-2 is mounted on the first guide slider. The bag-opening lifting drive assembly 3-1 also includes a first drive motor, which is connected to the first guide slider via a crank-connecting rod structure, or the first drive motor is connected to the first guide slider via a lead screw structure. Preferably, this embodiment uses a lead screw structure to connect the first drive motor and the first guide slider, that is, the bag-opening lifting drive assembly 3-1 constitutes a lead screw motor module. The first drive motor, the lead screw structure, and the first guide rail constitute the main body 3-11 of the bag-opening lifting drive assembly.

[0032] like Figure 1 and Figure 2 As shown, the bag-opening guide structure 3-21 includes a bag-opening guide support body 3-210 fixed on a first guide slider. The bag-opening guide support body 3-210 is provided with two bag-opening slides 3-211, which extend horizontally and are arranged side-by-side. Each of the two bag-opening slides 3-211 contains a bag-opening slider 3-212, which slides in conjunction with the bag-opening slide 3-211.

[0033] In this embodiment, the "two opening slides 3-211 are arranged side by side" specifically means that the ends of the two opening slides 3-211 are aligned along the extension direction of the opening slides 3-211.

[0034] The pair of opening rods 3-22 are positioned below the opening guide structure 3-21 and are respectively mounted on the two opening sliders 3-212. The opening execution drive structure 3-23 is positioned above the opening guide structure 3-21 and fixed on the first guide slider. The opening execution drive structure 3-23 is used to drive the opening sliders 3-212 to reciprocate along the opening slide rails 3-211. In this embodiment, along the extending direction of the opening execution drive structure 3-23, the two opening slide rails 3-211 include sections that gradually approach each other and then gradually move away from each other.

[0035] By setting the two opening slides 3-211 in the bag opening guide structure 3-21 to have sections that "gradually approach and then gradually move away", the bag opening execution drive structure 3-23 can drive the bag opening slider 3-212 to move back and forth along the bag opening slide 3-211, driving a pair of bag opening rods 3-22 to achieve the action of closing and opening. Thus, after the medicine bag enters the medicine bag holding mechanism 4 or during the process of entering the medicine bag holding mechanism 4, the bag opening rods 3-22 can first close to ensure that the medicine bag can be inserted from the bag opening. During this process, even if there is a slight deviation in the bag opening, it can be accurately inserted into the bag opening area. After the medicine bag enters the medicine bag holding mechanism 4, the bag opening rods 3-22 move along the bag opening slide 3-211 and gradually open, which can smoothly open the bag opening to ensure that the subsequent material can fall accurately into the medicine bag.

[0036] In this embodiment, the two bag opening slides 3-211 are regarded as a whole. The extension path of the two bag opening slides 3-211 as a whole is a straight line parallel to the extension path of the bag opening execution drive structure 3-23, and the extension path of each of the two bag opening slides 3-211 is a smooth curve.

[0037] Specifically, such as Figure 2 and Figure 3 As shown, the bag opening guide support body 3-210 is a plate extending horizontally, and the bag opening slide 3-211 is strip-shaped. The two bag opening slides 3-211 are symmetrically arranged on the bag opening guide support body 3-210, and the axis of symmetry between the two bag opening slides 3-211 is parallel to the extension path of the bag opening execution drive structure 3-23.

[0038] The working end 3-232 of the bag opening actuator is connected to the bag opening slider 3-212 through the bag opening transmission connection structure 3-24.

[0039] The bag-opening execution drive structure 3-23 can be a crank-slider drive assembly, a lead screw motor drive assembly, or a cylinder, hydraulic cylinder, etc.

[0040] In some specific embodiments, the bag-opening execution drive structure 3-23 includes a second guide rail mounted on the working end 3-12 of the bag-opening lifting drive assembly, i.e., the first guide slider, and a second guide slider that slides in cooperation with the second guide rail. The second guide rail extends horizontally, and the second guide slider constitutes the working end 3-232 of the bag-opening execution drive structure. The bag-opening transmission connection structure 3-24 transmits and connects the second guide slider and the two bag-opening sliders 3-212. The bag-opening execution drive structure 3-23 also includes a second drive motor, which is transmitted and connected to the second guide slider through a crank-connecting rod structure, or the second drive motor is transmitted and connected to the second guide slider through a lead screw structure. Preferably, as shown... Figure 1As shown, this embodiment uses a lead screw structure to drive the second drive motor and the second guide slider. That is, the bag opening lifting drive assembly 3-1 constitutes a lead screw motor module. The lead screw structure, the second drive motor, and the second guide rail constitute the main body 3-231 of the bag opening execution drive structure.

[0041] In some specific embodiments, the bag-opening transmission connection structure 3-24 includes a bag-opening transmission connection block 3-241 and two swing rods 3-242 mounted on the bag-opening transmission connection block 3-241, such as... Figure 1 and Figure 2 As shown, the bag opening transmission connecting block 3-241 is fixed on the working end 3-232 of the bag opening execution drive structure. The bag opening transmission connecting block 3-241 is set above the bag opening guide support body 3-210 and corresponds to the position between the two bag opening slides 3-211. One end of the two swing rods 3-242 is respectively hinged to the bag opening transmission connecting block 3-241, and the other end of the two swing rods 3-242 is respectively hinged to the two bag opening sliders 3-212.

[0042] The swing rod 3-242 is installed at the bottom of the bag opening transmission connecting block 3-241, specifically, as follows: Figure 4 As shown, the bag opening transmission connecting block 3-241 and the swing rod 3-242 are connected by a stop bolt 3-2441, and a bearing is provided between the stop bolt 3-2441 and the bag opening transmission connecting block 3-241. In this embodiment, the rod portion of the stop bolt 3-2441 includes a first extension section with external threads and a second extension section with a smooth surface. The first extension section and the second extension section are coaxially arranged. The first extension section is located at the end of the second extension section away from the head of the stop bolt 3-2441. The outer diameter of the first extension section is smaller than the outer diameter of the second extension section, and a stepped surface is formed at the connection between the first extension section and the second extension section. The bag opening transmission connecting block 3-241 is provided with a first mounting hole, and the swing rod 3-242 is provided with a threaded hole adapted to the external threads on the first extension section. The stop bolt 3-2441 passes through the first mounting hole on the bag opening transmission connecting block 3-241 and is tightened into the threaded hole on the swing rod 3-242.

[0043] The first mounting hole has a first flange bearing 3-2442 and a second flange bearing 3-2443 at its upper and lower ends, respectively. The first flange bearing 3-2442 and the second flange bearing 3-2443 are of the same model. The first flange bearing 3-2442 is inserted into the first mounting hole from the upper end, and the flange part of the first flange bearing 3-2442 is in contact with the top surface of the bag opening transmission connecting block 3-241. The second flange bearing 3-2443 is inserted into the first mounting hole from the lower end, and the flange part of the second flange bearing 3-2443 is in contact with the bottom surface of the bag opening transmission connecting block 3-241. A first bushing 3-2444 and a second bushing 3-2445 are fitted onto the second extension of the plug bolt 3-2441. The two ends of the first bushing 3-2444 abut against the head of the plug bolt 3-2441 and the flange of the first flange bearing 3-2442, respectively. The two ends of the second bushing 3-2445 abut against the top surface of the swing rod 3-242 and the flange of the second flange bearing 3-2443, respectively. The plug bolt 3-2441, the first bushing 3-2444, the first flange bearing 3-2442, the second flange bearing 3-2443, and the second bushing 3-2445 together constitute the first hinge shaft for connecting the swing rod 3-242 and the bag-opening transmission connecting block 3-241.

[0044] In this embodiment, the bag opening slide 3-211 has a strip-shaped opening. The shaft 3-2451, which is used to connect the swing rod 3-242 and the bag opening slider 3-212, passes through the strip-shaped opening and extends downward to connect with the upper end of the bag opening rod 3-22.

[0045] Specifically, such as Figure 4 As shown, the shaft body 3-2451 of the second hinge shaft includes a first shaft segment, a second shaft segment, and a third shaft segment arranged sequentially from bottom to top. The first shaft segment, the second shaft segment, and the third shaft segment are coaxially arranged. The outer diameter of the first shaft segment is smaller than the outer diameter of the second shaft segment. The outer peripheral wall of the first shaft segment is provided with external threads. The first shaft segment is used for assembly with the bag opening rod 3-22. The third shaft segment extends upward from the upper end of the second shaft segment. The upper end of the third shaft segment is provided with external threads. The third shaft segment passes through the second mounting holes on the slider and the swing rod 3-242 sequentially from bottom to top, and connects with the limit nut to realize the assembly of the bag opening slider 3-212 and the swing rod 3-242.

[0046] In this embodiment, the outer diameter of the third shaft segment is smaller than the outer diameter of the second shaft segment, and the bag opening slider 3-212 abuts against the shoulder between the second shaft segment and the third shaft segment. Alternatively, the upper end of the second shaft segment is provided with an outwardly protruding radial protrusion, and the bag opening slider 3-212 abuts against the radial protrusion.

[0047] In this embodiment, a third flange bearing 3-2452 and a fourth flange bearing 3-2453 are respectively provided at the upper and lower ends of the second mounting hole. The third flange bearing 3-2452 and the fourth flange bearing 3-2453 are of the same model. The third flange bearing 3-2452 is inserted into the second mounting hole from the upper end, and the flange part of the third flange bearing 3-2452 is in contact with the top surface of the swing rod 3-242. The fourth flange bearing 3-2453 is inserted into the second mounting hole from the lower end, and the flange part of the fourth flange bearing 3-2453 is in contact with the bottom surface of the swing rod 3-242.

[0048] The third shaft segment passes sequentially from bottom to top through the bag-opening slider 3-212, the fourth flange bearing 3-2453, and the third flange bearing 3-2452, and then connects to the limiting nut. The bottom of the flange portion of the fourth flange bearing 3-2453 abuts against the bag-opening slider 3-212. A third bushing is also fitted onto the third shaft segment. The lower end of the third bushing abuts against the flange portion of the third flange bearing 3-2452, and the upper end of the third bushing abuts against the limiting nut. The shaft body 3-2451, the third flange bearing 3-2452, the fourth flange bearing 3-2453, and the limiting nut together constitute the second hinge shaft.

[0049] In this embodiment, the bag opening rod 3-22 includes a bag opening rod support body 3-221 and a bag opening rod working part 3-222. The bag opening rod support body 3-221 is block-shaped and is used to connect with the bag opening slider 3-212. The bag opening rod working part 3-222 is sheet-shaped and extends downward from the bottom of the bag opening support body. Along the downward extension direction, the thickness of the bag opening rod working part 3-222 gradually decreases, which is used to open the bag opening of the medicine bag.

[0050] In some possible embodiments, the upper end of the bag opening rod support 3-221 is provided with a threaded hole that matches the external thread on the first shaft segment. The bag opening rod support 3-221 is tightened to the lower end of the shaft 3-2451 of the second hinge shaft. The top of the bag opening rod support 3-221 abuts against and is limited by the shoulder at the connection between the second shaft segment and the first shaft segment.

[0051] In some other possible embodiments, the opening rod support 3-221 is provided with an assembly groove, which is recessed from the side of the opening rod support 3-221, and the orientation of the groove opening is perpendicular to the axis of the second hinge shaft. The opening rod support 3-221 is provided with a through hole extending downward from the top and penetrating the top wall of the assembly groove. The first shaft segment extends through the through hole into the assembly groove. The top of the opening rod support 3-221 abuts against and limits the connection between the second shaft segment and the shoulder of the first shaft segment. A nut adapted to the external thread on the first shaft segment is installed in the assembly groove to fix the second hinge shaft and the opening rod 3-22.

[0052] In this embodiment, the bag opening transmission connection structure 3-24 further includes a bag opening transmission connection plate 3-243. The bag opening transmission connection plate 3-243 is fixedly connected to the working end 3-232 of the bag opening execution drive structure, i.e., the second guide slider. The bottom of the bag opening transmission connection plate 3-243 extends downward and bends horizontally. The bottom of the bag opening transmission connection plate 3-243 is fixedly connected to the bag opening transmission connection block 3-241 by bolts.

[0053] Specifically, such as Figure 2 As shown, in this embodiment, the bag opening transmission connecting block 3-241 is a horizontally extending rectangular or rhomboid block. The diagonal of the first set of diagonals of the bag opening transmission connecting block 3-241 is parallel to the axis of symmetry between the two bag opening slides 3-211. The lower end of the bag opening transmission connecting plate 3-243 extends along the diagonal of the first set of diagonals of the bag opening transmission connecting block 3-241 and is fixedly connected to the bag opening transmission connecting plate 3-243 by bolts. The two swing rods 3-242 are respectively hinged at the second set of diagonals of the bag opening transmission connecting plate 3-243.

[0054] In this embodiment, the bag opening slide 3-211 is a strip-shaped opening, and the inner edge of the strip-shaped opening is provided with an annular boss 3-2114.

[0055] In some possible embodiments, the bag-opening slider 3-212 abuts against the annular boss 3-2114.

[0056] In some preferred embodiments, the annular boss 3-2114 is used for pre-installing the bag-opening slider 3-212. The bag-opening slider 3-212 is suspended on the working end 3-232 of the bag-opening execution drive structure via the bag-opening transmission connection structure 3-24, and is spaced apart from the annular boss 3-2114. This reduces the friction between the bag-opening slider 3-212 and the bag-opening slide 3-211, further improving the smoothness of the auxiliary bag-opening mechanism's operation.

[0057] Preferably, in this embodiment, the bag opening slider 3-212 is configured as a roller structure, and the outer peripheral wall of the roller structure rolls with the inner edge of the strip opening, which can reduce the friction between the bag opening slider 3-212 and the bag opening slide 3-211, and further improve the smoothness of the auxiliary bag opening mechanism.

[0058] In some specific embodiments, from the first end to the second end of the two opening slides 3-211, the two opening slides 3-211 include a first curved section 3-2111 that gradually approaches each other and a second curved section 3-2112 that gradually moves away from each other. The second curved section 3-2112 is smoothly connected to the first curved section 3-2111. Thus, before the opening rod 3-22 is initially inserted downward into the medicine bag holding mechanism 4, the opening slider 3-212 is moved to the connection between the first curved section 3-2111 and the second curved section 3-2112, so that the two opening rods 3-22 approach each other, allowing both opening rods 3-22 to smoothly enter the opening of the medicine bag. Then, the opening execution drive structure 3-23 drives the opening slider 3-212 to reciprocate between the first end and the second end of the opening slide 3-211, which can open the opening of the medicine bag using the opening rods 3-22.

[0059] In this embodiment, the pair of opening rods 3-22 includes a first opening rod and a second opening rod. The opening rod working part 3-2221 of the first opening rod extends downward from the bottom of its opening rod support body 3-221 and the edge near the second opening rod. The side of the opening rod working part 3-2221 away from the second opening rod extends obliquely towards the second opening rod along the downward extension direction. The opening rod working part 3-2222 of the second opening rod extends downward from the bottom of its opening rod support body 3-221 and the edge near the first opening rod. The side of the opening rod working part 3-2222 away from the first opening rod extends obliquely towards the first opening rod along the downward extension direction.

[0060] Preferably, in this embodiment, when the bag-opening slider 3-212 is located at the connection between the first curved section 3-2111 and the second curved section 3-2112, the bag-opening rod working part 3-2221 of the first bag-opening rod and the bag-opening rod working part 3-2222 of the second bag-opening rod are in contact. This ensures that the bag-opening rod working parts 3-222 of both bag-opening rods 3-22 can be inserted into the medicine bag simultaneously.

[0061] In some preferred embodiments, a guide connecting shaft 3-224 is provided at the opening rod support body 3-221 of the two opening rods 3-22, which vertically penetrates the two opening rod support bodies 3-221. The opening rod support body 3-221 of the two opening rods 3-22 is slidably engaged with the guide connecting shaft 3-224, and the guide connecting shaft 3-224 has a margin for the two opening rods 3-22 to open.

[0062] Preferably, the guide connecting shaft 3-224 passes through the opening rod support body 3-221 of the first opening rod and the opening rod support body 3-221 of the second opening rod in a horizontal direction perpendicular to the bag opening actuator drive structure 3-23. A linear bearing is embedded in the opening rod support body 3-221, which is sleeved on the guide connecting shaft 3-224 via the linear bearing, improving the smoothness of sliding. Nuts are provided at both ends of the guide connecting shaft 3-224 to prevent the guide connecting shaft 3-224 from disengaging from the opening rod support body 3-221.

[0063] Preferably, the guide connecting shaft 3-224 is provided in two sets that are parallel to each other.

[0064] In some preferred embodiments, an elastic element 3-225 is provided between the opening rod supports 3-221 of the two opening rods 3-22 for driving the two opening rods 3-22 to move closer or further apart.

[0065] Preferably, the elastic element 3-225 includes a compression spring sleeved on at least one set of guide connecting shafts 3-224. For example... Figure 1 As shown, the elastic element 3-225 includes two compression springs disposed on a set of guide connecting shafts 3-224. The two compression springs are of the same model. One compression spring is sleeved on the guide connecting shaft 3-224 from the first end of the guide connecting shaft 3-224. One end of the compression spring abuts against the nut located at the first end of the guide connecting shaft 3-224, and the other end of the compression spring abuts against the side of the opening rod support 3-221 of the first opening rod away from the second opening rod. The other compression spring is sleeved on the guide connecting shaft 3-224 from the second end of the guide connecting shaft 3-224. One end of the compression spring abuts against the nut located at the second end of the guide connecting shaft 3-224, and the other end of the compression spring abuts against the side of the opening rod support 3-221 of the second opening rod away from the first opening rod.

[0066] The elastic element 3-225 and the guide connecting shaft 3-224 can improve the working stability of the bag opening rod 3-22 and prevent the bag opening rod 3-22 from shaking. In addition, the elastic element 3-225 can also improve the tightness of the fit between the two bag opening rod working parts 3-222, and prevent the medicine bag from entering between the two bag opening rod working parts 3-222.

[0067] Preferably, in this embodiment, in order to improve the fitting effect of the two opening rod working parts 3-222, when the opening slider 3-212 is located at the connection of the first bending section 3-2111 and the second bending section 3-2112, the two opening rod supports 3-221 are spaced apart, and the two opening rod working parts 3-222 are tightly fitted under the elastic force of the elastic member 3-225.

[0068] Preferably, the guide connecting shaft 3-224 is provided with two shafts arranged at intervals in the vertical direction, and the elastic element 3-225 is provided on the guide connecting shaft 3-224 located below.

[0069] like Figure 5 and Figure 6 As shown, in this embodiment, the downward extension length of the opening rod working part 3-2221 of the first opening rod is greater than the downward extension length of the opening rod working part 3-2222 of the second opening rod; the lower end of the opening rod working part 3-2221 of the first opening rod is provided with a blocking part 3-223 that protrudes and extends towards the side where the second opening rod is located. The blocking part 3-223 is used to block the gap between the opening rod working parts 3-2221 of the first opening rod and the second opening rod when the opening slider 3-212 is located at the connection between the first curved section 3-2111 and the second curved section 3-2112.

[0070] Specifically, the lower end of the opening rod working part 3-2221 of the first opening rod extends downward relative to the lower end of the opening rod working part 3-2222 of the second opening rod. The blocking part 3-223 protrudes from the side of the opening rod working part 3-2221 of the first opening rod toward the second opening rod. The thickness of the upper end of the blocking part 3-223 protruding relative to the opening rod working part 3-2221 of the first opening rod is greater than the thickness of the lower end of the opening rod working part 3-2222 of the second opening rod. The blocking part 3-223 can block the lower end of the opening rod working part 3-2222 of the second opening rod, thereby preventing one side of the medicine bag from getting stuck between the opening rod working part 3-2221 of the first opening rod and the opening rod working part 3-2222 of the second opening rod.

[0071] Preferably, the thickness of the shielding part 3-223 gradually decreases along the downward extension direction, that is, the overall thickness of the lower end of the opening rod working part 3-2221 of the first opening rod, where the shielding part 3-223 is provided, gradually decreases along the downward extension direction.

[0072] Preferably, the width of the lower end of the opening rod working part 3-2221 of the first opening rod located above and adjacent to the blocking part 3-223 is greater than the width of the lower end of the opening rod working part 3-2222 of the second opening rod, and the lower end of the opening rod working part 3-2222 of the second opening rod corresponds to the middle part of the blocking part 3-223.

[0073] Preferably, at least the lower end of the opening rod working part 3-2221 of the first opening rod extends obliquely towards the first or second end of the opening slide 3-211. Thus, the lower end of the opening rod working part 3-2221 of the first opening rod can be inserted into the bag opening from the end near the side seal edge of the bag or the end near the pre-folded side of the bag opening, avoiding the inability to insert the bag opening due to the middle of the bag opening deviating to one side. In this embodiment, the bag is made of pre-folded film 2-61, and the bag with the opening includes a side seal edge, a pre-folded side, and a bottom seal edge, wherein the pre-folded side is the side opposite to the side seal edge.

[0074] In some specific embodiments, the medicine bag holding mechanism 4 includes a fixed body and a movable body, which are joined together to form a space for accommodating the medicine bag. The space for accommodating the medicine bag extends vertically through the medicine bag holding mechanism 4. Specifically, the fixed body is provided with a first curved groove, and the movable body is provided with a second curved groove. The first and second curved grooves are arranged opposite to each other, and the first and second curved grooves are joined together to form the space for accommodating the medicine bag.

[0075] The medicine bag holding mechanism 4 keeps the medicine bag in a top-open state. Specifically, the fixing body is provided with a guide film groove for accommodating the side seal of the medicine bag. The guide film groove is located in the middle of the first curved groove and is recessed from the middle of the first curved groove in a direction away from the moving body. A pressure block 46 for fixing the medicine bag in the medicine bag holding mechanism 4 is located on the side of the fixing body away from the moving body. The pressure block 46 is rotatably engaged with the fixing body, and a torsion spring is provided between the pressure block 46 and the fixing body. The pressure block 46 is located outside the guide film groove, and a clearance opening is provided on the groove wall of the guide film groove on the side near the pressure block 46. The torsion spring is used to force the pressure block 46 to rotate into the guide film groove, so that the pressure block 46 extends at least partially into the guide film groove, pressing the side seal of the medicine bag against the groove wall of the guide film groove on the side away from the pressure block 46. Specifically, the bag-pressing block 46 includes a pressing part extending towards the side of the guide film groove for pressing the side sealing edge, and an abutting part extending away from the guide film groove. At least at the bag-feeding station and bag-dropping station of the dispensing equipment, a bag-opening mechanism is provided for pressing the abutting part to rotate the bag-pressing block 46 outward from the guide film groove and release the pressing.

[0076] In some preferred embodiments, a narrow groove is further provided in the middle of the second curved groove. This narrow groove is used to accommodate the side of the medicine bag opposite to the side seal, i.e., to accommodate the pre-folded side of the medicine bag. The openings of the narrow groove and the guide film groove are opposite each other. The narrow groove extends obliquely upwards towards the guide film groove. After the medicine bag is introduced into the space for accommodating the medicine bag, as the medicine bag moves upwards, the narrow groove squeezes the side of the medicine bag opposite to the side seal, causing the top opening of the medicine bag to open.

[0077] When the medicine bag enters the medicine bag holding mechanism 4, the side seal and pre-folded side of the medicine bag are guided by the guide film groove and the slot respectively, and will not deviate from the vertical bisecting plane of the medicine bag holding mechanism 4. However, since the medicine bag needs to be squeezed to open the bag opening, the middle of the bag opening is prone to deviate from the vertical bisecting plane of the medicine bag holding mechanism 4. In this embodiment, by setting the lower end of the opening rod working part 3-2221 of the first opening rod to extend obliquely towards the first or second end of the opening slide 3-211, the lower end of the opening rod working part 3-2221 of the first opening rod can be inserted from the end near the bag opening, ensuring smooth insertion into the bag opening.

[0078] Preferably, the opening bar working part 3-2221 of the first opening bar includes a first edge 3-22211 and a second edge 3-22212 extending in a vertical direction, and a third edge 3-22213 and a fourth edge 3-22214 extending downward at an incline from the lower ends of the first edge 3-22211 and the second edge 3-22212, respectively, with the lower ends of the third edge 3-22213 and the fourth edge 3-22214 connected to each other. Wherein, the lower end of the first edge 3-22211 is lower than the lower end of the second edge 3-22212, the third edge 3-22213 extends downward from the lower end of the first edge 3-22211 and towards the second end of the opening slide 3-211, and the fourth edge 3-22214 extends downward from the lower end of the second edge 3-22212 and towards the second end of the opening slide 3-211. The angle between the third edge 3-22213 and the first edge 3-22211 is smaller than the angle between the fourth edge 3-22214 and the second edge 3-22212.

[0079] Preferably, along the direction close to the second end of the bag opening slide 3-211, the thickness of the lower end of the bag opening rod working part 3-2221 of the first bag opening rod gradually decreases, so that the lower end of the bag opening rod working part 3-2221 of the first bag opening rod forms a sharp angle.

[0080] In this embodiment, the bag opening execution component 3-2 is configured with: a working position, in which the lower end of the bag opening rod 3-22 extends at least partially into the medicine bag holding mechanism 4; and a reset position. The bag opening rod 3-22 is configured with: a first position, in which the bag opening slider 3-212 is located in the middle of the bag opening slide 3-211, and the two bag opening rods 3-22 are in contact; a second position, in which the bag opening slider 3-212 is located at the first end of the bag opening slide 3-211, and the two bag opening rods 3-22 are spaced apart; and a third position, in which the bag opening slider 3-212 is located at the second end of the bag opening slide 3-211, and the two bag opening rods 3-22 are spaced apart.

[0081] Specifically, the auxiliary bag-opening mechanism is equipped with a lifting position detection component and a bag-opening position detection component 3-4. The lifting position detection component is located between the main body 3-11 and the working end 3-12 of the bag-opening lifting drive component, and is used to detect the position of the working end 3-12. It is electrically connected to the bag-opening lifting drive component 3-1, specifically to the first drive motor of the bag-opening lifting drive component 3-1. The bag-opening position detection component 3-4 is located between the main body 3-231 and the working end 3-232 of the bag-opening execution drive structure, and is used to detect the position of the working end 3-232. It is electrically connected to the bag-opening execution drive structure 3-23, specifically to the second drive motor of the bag-opening execution drive structure 3-23.

[0082] In some specific embodiments, the lifting position detection component includes a first photoelectric sensor bracket extending vertically, two first photoelectric sensors mounted on the first photoelectric sensor bracket, and a first baffle mounted on the working end 3-12 of the bag opening lifting drive component. The two first photoelectric sensors are spaced apart vertically and are electrically connected to the first drive motor respectively. When the bag opening execution component 3-2 moves to the working position, the first baffle cooperates with the first photoelectric sensor located below, and the first photoelectric sensor generates a feedback signal to control the first drive motor to stop working. When the bag opening execution component 3-2 moves to the reset position, the first baffle cooperates with the first photoelectric sensor located above, and the first photoelectric sensor generates a feedback signal to control the first drive motor to stop working.

[0083] The bag opening position detection component 3-4 includes a second photoelectric sensor bracket 3-43 extending horizontally along the extension direction parallel to the extension direction of the bag opening execution drive structure 3-23, three second photoelectric sensors 3-41 mounted on the second photoelectric sensor bracket 3-43, and a second baffle 3-42 mounted on the working end 3-232 of the bag opening execution drive structure. The three second photoelectric sensors 3-41 are arranged at intervals along the extension direction of the bag opening execution drive structure 3-23 and are electrically connected to the second drive motor respectively. When the bag opening rod 3-22 moves to the first position, the second baffle 3-42 corresponds to and engages with the second photoelectric sensor 3-41 located in the middle. When the second photoelectric sensor 3-41 generates a feedback signal, it controls the second drive motor to stop working. When the bag opening rod 3-22 moves to the second position, the second baffle 3-42 corresponds to and engages with the second photoelectric sensor 3-41 located at the first end near the bag opening slide 3-211. The second photoelectric sensor 3-41 generates a feedback signal, controlling the second drive motor to stop working. When the bag opening rod 3-22 moves to the third position, the second baffle 3-42 corresponds to and engages with the second photoelectric sensor 3-41 located at the second end near the bag opening slide 3-211. The second photoelectric sensor 3-41 generates a feedback signal, controlling the second drive motor to stop working.

[0084] When the bag opening actuator 3-2 moves to the reset position, the bag opening rod 3-22 disengages from the medicine bag holding mechanism 4 and moves to a position higher than the medicine bag holding mechanism 4 to avoid interfering with the movement of the medicine bag holding mechanism 4. When the bag opening actuator 3-2 moves to the working position, the second drive motor can drive the bag opening rod 3-22 to move and open the mouth of the medicine bag.

[0085] In some possible embodiments, when an auxiliary bag-opening mechanism is provided in the dispensing equipment, the auxiliary bag-opening mechanism can be set in a separate station located downstream of the bag-dispensing station, for opening the bag opening after the medicine bag enters and is positioned in the medicine bag holding mechanism 4.

[0086] In some other preferred embodiments, the auxiliary bag-opening mechanism is installed above the bag-dispensing station of the dispensing equipment.

[0087] In this embodiment, the dispensing equipment includes a frame, a dispensing module, and a transmission module. The dispensing module and the transmission module are respectively mounted on the frame. A medicine bag holding mechanism 4 is installed on the transmission module. The transmission module is used to drive the medicine bag holding mechanism 4 to move along its extension path. The dispensing module is used to quantitatively output the material stored within it, so that the material quantitatively falls into the medicine bag carried by the medicine bag holding mechanism 4. The dispensing module includes multiple dispensing cabinets, and the hopper of each dispensing cabinet stores different types of materials. The materials can be powders of traditional Chinese medicine or Mongolian medicine, or granules of traditional Chinese medicine or Mongolian medicine. Each dispensing cabinet is used to quantitatively output the material stored in its hopper.

[0088] The dispensing equipment is equipped with a bag feeding station, a dispensing station, a top sealing station, and a bag dropping station. When the transmission module is working, it drives the medicine bag holding mechanism 4 installed on it to move, so that the medicine bag holding mechanism 4 passes through the bag feeding station, the dispensing station, the top sealing station, and the bag dropping station. When the medicine bag holding mechanism 4 moves to the bag feeding station, the medicine bag enters the medicine bag holding mechanism 4 from the bottom. The medicine bag holding mechanism 4 squeezes the two sides of the medicine bag, opening the top of the medicine bag. After entering, the bag pressing block 46 clamps the side sealing edge of the medicine bag and positions the medicine bag inside the medicine bag holding mechanism 4. The bottom of the dispensing module has a dispensing station. When the medicine bag holding mechanism 4 moves to the dispensing station, the dispensing cabinet works to deliver a fixed amount of material into the medicine bag. When the medicine bag holding mechanism 4 moves to the top sealing station, the top sealing device seals the top of the medicine bag. When the medicine bag holding mechanism 4 moves to the bag dropping station, the bag pressing block 46 of the medicine bag holding mechanism 4 opens, and the medicine bag detaches from the bottom of the medicine bag holding mechanism 4.

[0089] In this embodiment, an auxiliary bag-opening mechanism is provided above the bag-dispensing station of the dispensing equipment to ensure that the bag opening of the medicine bag inside the medicine bag holding mechanism 4 is open.

[0090] like Figures 7 to 10 As shown, in this embodiment, when the dispensing device is configured with the medicine bag holding mechanism 4 and the auxiliary bag opening mechanism, the bag opening execution component 3-2 of the auxiliary bag opening mechanism is placed directly above the medicine bag holding mechanism 4, the first end of the bag opening slide 3-211 of the auxiliary bag opening mechanism is configured to correspond to the side where the guide film groove of the medicine bag holding mechanism 4 is located, and the second end of the bag opening slide 3-211 is configured to correspond to the side where the slot of the medicine bag holding mechanism 4 is located.

[0091] When the bag opening rod 3-22 is inserted into the medicine bag, the bag opening rod 3-22 is in the first position, the bag opening execution component 3-2 descends to the working position, and the third edge 3-22213 and the fourth edge 3-22214 of the bag opening rod working part 3-2221 of the first bag opening rod form an angle and are inserted into the medicine bag from the end of the bag opening near the pre-folded side.

[0092] like Figure 8 and Figure 9 As shown, when the bag opening execution drive structure 3-23 drives the bag opening rod 3-22 to move to the second position, the bag opening rod 3-22 opens the bag opening of the corresponding part of the medicine bag in the fixed body; when the bag opening execution drive structure 3-23 drives the bag opening rod 3-22 to move to the third position, the bag opening rod 3-22 opens the bag opening of the corresponding part of the medicine bag in the movable body. At this time, the space directly below the inclined slot can accommodate the lower end of the bag opening rod working part 3-2221 of the first bag opening rod, so that the bag opening rod working part 3-222 of the bag opening rod 3-22 has a larger range of motion in the medicine bag holding mechanism 4.

[0093] Preferably, in this embodiment, the second end of the two opening slides 3-211 is also provided with a gradually approaching third curved section 3-2113, and the third curved section 3-2113 is smoothly connected to the second curved section 3-2112.

[0094] Preferred, such as Figure 10 As shown, the fourth edge 3-22214 of the opening bar working part 3-2221 of the first opening bar is arranged opposite to the slot.

[0095] In this embodiment, a bag-making device is arranged directly below the bag-giving station. The bag-making device sequentially performs vertical sealing, horizontal sealing and cutting of the pre-folded film 2-61 to produce a medicine bag with a bag opening at the top.

[0096] In some possible embodiments, after the bag-making device produces the medicine bag, the medicine bag is clamped and limited within the medicine bag holding mechanism 4 by the bag-pressing block 46, and then the auxiliary bag-opening mechanism starts working, including the following steps: S01: The first drive motor drives the bag opening execution component 3-2 to move to the working position; At this time, the bag opening rod 3-22 is in the first position. During the process of the bag opening execution component 3-2 moving to the working position, the lower end of the bag opening rod working part 3-222 of the bag opening rod 3-22 is inserted through the bag opening of the medicine bag. S02: The second drive motor operates, and the bag opening lever 3-22 completes at least one switch from the first position to the second position and at least one switch from the first position to the third position; S03: The bag opening actuator 3-2 moves to the reset position. Preferably, before the bag opening actuator 3-2 moves to the reset position, the bag opening lever 3-22 is moved to the first position.

[0097] In some other preferred embodiments, the bag-making device works in conjunction with the auxiliary bag-opening mechanism. During the process of the bag-making device pushing the medicine bag into the medicine bag holding mechanism 4, the bag-opening execution component 3-2 of the auxiliary bag-opening mechanism moves to the working position.

[0098] Specifically, the control method for the dispensing equipment includes: S1: The bag-making device pushes the pre-folded film 2-61, which has been vertically sealed, upwards by a certain length, and part of the pre-folded film 2-61 enters the medicine bag holding mechanism 4; S2: The bag opening execution component 3-2 moves to the working position; at this time, the bag opening rod 3-22 is in the first position, and the lower end of the bag opening rod 3-22 is spaced apart from the upper end of the pre-folded film 2-61, or the lower end of the bag opening rod 3-22 is at least partially inserted into the pre-folded film 2-61; S3: The bag-making device completes the horizontal sealing and cutting of the pre-folded film 2-61 to produce a medicine bag, and pushes the produced medicine bag upward. The medicine bag holding mechanism 4 fixes the medicine bag. S4: The bag opening lever 3-22 completes at least one switch from the first position to the second position and at least one switch from the first position to the third position; S5: The bag opening actuator 3-2 moves to the reset position. Preferably, before the bag opening actuator 3-2 moves to the reset position, the bag opening lever 3-22 is moved to the first position.

[0099] In some specific embodiments, in steps S4 and S02, the bag opening rod 3-22 first switches to the second position, then switches to the third position, and finally switches back to the first position; or, the bag opening rod 3-22 first switches to the third position, then switches to the second position, and finally switches back to the first position.

[0100] like Figure 11 As shown, in some specific embodiments, the bag-making device includes a film roll support and feeding mechanism 2-1, a sealing and cutting mechanism 2-2, and a film feeding mechanism 2-5. The film roll support and feeding mechanism 2-1 is used to support the film roll 2-6 and convey the pre-folded film 2-61; the sealing and cutting mechanism 2-2 includes a sealing and cutting mechanism bracket 2-21 disposed above the film roll support and feeding mechanism 2-1, and a sealing and cutting execution component mounted on the sealing and cutting mechanism bracket 2-21. The sealing and cutting execution component is used to vertically seal the pre-folded opposite side of the pre-folded film 2-61, and to horizontally seal and cut the vertically sealed pre-folded film 2-61; the film feeding mechanism 2-5 is used to convey the pre-folded film 2-61, and the film feeding mechanism 2-5 can convey the film roll support and feeding mechanism 2-1 into the sealing and cutting mechanism 2-2 for vertical sealing, horizontal sealing, and cutting.

[0101] The membrane roll support and feeding mechanism 2-1 includes a membrane roll support and feeding mechanism bracket 2-11, and a membrane roll support assembly 2-12, a membrane unwinding assembly 2-13, a membrane shaping assembly 2-14, and a membrane guide roller 2-15 mounted on the membrane roll support and feeding mechanism bracket 2-11. The pre-folded membrane 2-61 passes through the membrane unwinding assembly 2-13 and the membrane shaping assembly 2-14 in sequence. Multiple membrane guide rollers 2-15 are arranged between the membrane roll support assembly 2-12 and the membrane unwinding assembly 2-13 and / or between the membrane unwinding assembly 2-13 and the membrane shaping assembly 2-14 for the pre-folded membrane 2-61 to pass through. The membrane roll support assembly 2-12, the membrane unwinding assembly 2-13, and the membrane shaping assembly 2-14 are all independent modules.

[0102] The membrane roll support assembly 2-12 is used to support the membrane roll 2-6 and is a separate module.

[0103] The film unwinding assembly 2-13 is an independent module, including an unwinding traction structure 2-131 and a floating roller group 2-132. The unwinding traction structure 2-131 is used to clamp the pre-folded film 2-61 and drive the pre-folded film 2-61 to unwind from the film roll 2-6. The floating roller group 2-132 is located below the unwinding traction structure 2-131 and is used to balance the traction force of the pre-folded film 2-61.

[0104] The membrane shaping component 2-14 is located upstream of the membrane feeding mechanism 2-5. It is used to weaken the pre-folded side fold of the pre-folded membrane 2-61, realize pre-shaping, and make the resulting medicine bag easier to open in the medicine bag holding mechanism 4.

[0105] The pre-folded film 2-61 is provided with color mark areas evenly arranged along its length. A color mark sensor 2-16 is provided between two adjacent film guide rollers 2-15. The color mark sensor 2-16 is electrically connected to the film feeding mechanism 2-5. By detecting the color mark areas on the pre-folded film 2-61, the feeding amount of the pre-folded film 2-61 is controlled to ensure the consistency of the medicine bag length.

[0106] A U-shaped sensor 2-17 is also installed between two adjacent film guide rollers 2-15 to detect the presence of pre-folded film 2-61. Specifically, the U-shaped sensor 2-17 can be a light sensor. The U-shaped sensor 2-17 is located below the color mark sensor 2-16 and is used to issue a no-film alarm signal when the pre-folded film 2-61 on the film roll 2-6 is used up.

[0107] The sealing and cutting mechanism support 2-21 includes a first support wall 2-211 and a second support wall 2-212 arranged opposite to each other. The sealing and cutting execution assembly includes a sealing and cutting feed assembly 2-23, a vertical sealing assembly, a horizontal sealing assembly, and a cutter. The sealing and cutting feed assembly 2-23 includes a first sealing and cutting feed support plate 2-231, a second sealing and cutting feed support plate 2-232, a first sealing and cutting feed guide structure 2-233, a second sealing and cutting feed guide structure 2-234, and a sealing and cutting feed drive structure. The first sealing and cutting feed support plate 2-231 is mounted on the second support wall 2-212 via the first sealing and cutting feed guide structure 2-233, and the second sealing and cutting feed support plate 2-232 is mounted on the first sealing and cutting feed support plate 2-231 via the second sealing and cutting feed guide structure 2-234. The motor of the sealing and cutting feed drive structure is mounted on the second support wall 2-212 via a motor bracket, and is connected to the first sealing and cutting feed support plate 2-231 via a gear and rack transmission structure. A compression spring is provided between the first sealing and cutting feed support plate 2-231 and the second sealing and cutting feed support plate 2-232 to keep them away from each other.

[0108] The vertical sealing assembly includes a vertical sealing strip and a corresponding vertical sealing block, while the horizontal sealing assembly includes a horizontal sealing strip and a corresponding horizontal sealing block. The second sealing and cutting feed support plate 2-232 is positioned opposite to the first support wall 2-211. The vertical and horizontal sealing strips are fixed to the second sealing and cutting feed support plate 2-232, and the vertical and horizontal sealing blocks are mounted on the first support wall 2-211. The cutter of the sealing and cutting execution assembly is fixed to the first sealing and cutting feed support plate 2-231, and the second sealing and cutting feed support plate 2-232 has an opening corresponding to the cutter for it to pass through.

[0109] In this embodiment, the horizontal sealing component is positioned above the vertical sealing component. Both the horizontal and vertical sealing components simultaneously seal the bottom of one medicine bag and the side of the next adjacent medicine bag. Specifically, for the production of one medicine bag, one stroke of the sealing and cutting feed component 2-23 of the sealing and cutting execution component can seal the opposite side of the pre-folded side of the pre-folded film 2-61. At this time, the pre-folded film 2-61 forms a cylindrical structure corresponding to the position of the medicine bag. Then, the sealing and cutting feed component 2-23 resets, and the pre-folded film 2-61 continues to be fed under the action of the film feeding mechanism 2-5. The position of the pre-folded film 2-61 corresponding to the medicine bag (i.e., the cylindrical structure) moves to the bottom position corresponding to the horizontal sealing component. The next stroke of the sealing and cutting feed component 2-23 can horizontally seal the bottom of the position of the pre-folded film 2-61 corresponding to the medicine bag (i.e., the cylindrical structure) and cut the pre-folded film 2-61 from below the horizontal sealing position, producing an independent medicine bag with an opening at the top. In this embodiment, the horizontal sealing area and the vertical sealing area of ​​the medicine bag at least partially overlap, ultimately forming an L-shaped sealing edge.

[0110] The sealing and cutting mechanism 2-2 is vertically mounted on the film roll support and feeding mechanism 2-1. A sealing and cutting mechanism lifting drive structure 2-81 and a sealing and cutting mechanism lifting guide structure 2-82 are provided between the film roll support and feeding mechanism 2-1 and the sealing and cutting mechanism 2-2.

[0111] The sealing and cutting mechanism lifting drive structure 2-81 is disposed between the film roll support and feeding mechanism 2-1 and the sealing and cutting mechanism bracket 2-21, and is used to drive the sealing and cutting mechanism 2-2 to lift. The sealing and cutting mechanism lifting guide structure 2-82 extends vertically and is disposed between the film roll support and feeding mechanism 2-1 and the sealing and cutting mechanism bracket 2-21. Specifically, a bearing plate 2-83 is installed on the top of the film roll support and feeding mechanism bracket 2-11, and the bearing plate 2-83 is fixedly connected to the film roll support and feeding mechanism bracket 2-11.

[0112] Preferably, the support plate 2-83 includes a first support plate and a second support plate respectively fixed on the film roll support and the winding mechanism bracket 2-11. The first support plate is located below the first support wall 2-211, and a set of mutually cooperating lifting slides and lifting rails are provided between the top of the first support plate and the outer side of the first support wall 2-211. The second support plate is located below the second support wall 2-212, and a set of mutually cooperating lifting slides and lifting rails are provided between the top of the second support plate and the outer side of the second support wall 2-212.

[0113] In step S1, the film feeding mechanism 2-5 pushes the pre-folded film 2-61 so that at least part of the vertically sealed portion enters the medicine bag holding mechanism 4. Specifically, the side sealing edge of the pre-folded film 2-61 enters the guide groove of the medicine bag holding mechanism 4, and the pre-folded side enters the narrow groove of the medicine bag holding mechanism 4.

[0114] In step S3, the sealing and cutting mechanism lifting drive structure 2-81 pushes the prepared medicine bag so that the opening of the medicine bag is higher than the top of the medicine bag holding mechanism 4, leaving enough space for the top sealing device to seal.

[0115] In some specific embodiments, when the medicine bag holding mechanism 4 moves to the bag feeding station, the film feeding mechanism 2-5 operates, driving the pre-folded film 2-61 to feed upwards, so that the pre-folded film 2-61, which has already completed the side sealing in the previous stroke of the sealing and cutting feeding assembly 2-23, is fed upwards by a set length, so that the bottom of the cylindrical structure that has completed the side sealing corresponds to the horizontal sealing assembly. At this time, the film feeding mechanism 2-5 stops working, and the sealing and cutting feeding assembly 2-23 operates. The sealing and cutting feeding assembly 2-23 completes one reciprocating stroke, completing the horizontal sealing and cutting of the medicine bag, and the vertical sealing of the next medicine bag.

[0116] Preferably, when the color mark sensor 2-16 scans the color mark area on the pre-folded film 2-61, the film feeding mechanism 2-5 stops working to ensure that the bag feeding length of the film feeding mechanism 2-5 is consistent. At this time, the pre-folded film 2-61, after completing the side sealing, is partially inside the medicine bag holding mechanism 4.

[0117] In this embodiment, during the process of the sealing and cutting feeding assembly 2-23 completing one reciprocating stroke, when the vertical sealing assembly and the horizontal sealing assembly clamp the pre-folded film 2-61 and the cutter cuts the pre-folded film 2-61, the sealing and cutting mechanism lifting drive structure 2-81 operates, raising the sealing and cutting mechanism 2-2 to the second position. At this time, the medicine bag that has completed horizontal sealing and cutting is completely inserted into the medicine bag holding mechanism 4. The opening of the medicine bag is higher than the top of the medicine bag holding mechanism 4 and is positioned in the space for accommodating the medicine bag by the pressing block 46 of the medicine bag holding mechanism 4. Then, the sealing and cutting feeding assembly 2-23 resets. Finally, the sealing and cutting mechanism lifting drive structure 2-81 operates, lowering the sealing and cutting mechanism 2-2 to the first position.

[0118] Preferably, before the sealing and cutting mechanism 2-2 rises to the second position, the pre-folded film 2-61 that has completed the side sealing is in a state where it is partially inside the medicine bag holding mechanism 4. At this time, step S2 is executed.

[0119] During the process of raising the sealing and cutting mechanism 2-2 to the second position, the resulting medicine bag continues to be pushed into the medicine bag holding mechanism 4 under the clamping action of the horizontal sealing assembly. When the sealing and cutting mechanism 2-2 is raised to the second position, the bag pressing block 46 presses the side seal edge under the action of the torsion spring, and the medicine bag is fixed in the medicine bag holding mechanism 4. Then, the auxiliary bag opening mechanism executes steps S4 and S5.

[0120] In this embodiment, a sealing and cutting feed position detection structure is provided between the first sealing and cutting feed support plate 2-231 and the sealing and cutting mechanism bracket 2-21. Specifically, the sealing and cutting feed position detection structure includes a sealing and cutting feed position sensor and a sealing and cutting feed position baffle. The sealing and cutting feed position sensor is a photoelectric sensor. Two sealing and cutting feed position sensors are arranged at intervals along the extension direction of the first sealing and cutting feed guide structure and are fixed on the motor bracket of the sealing and cutting feed drive structure. The sealing and cutting feed position baffle, which cooperates with the sealing and cutting feed position sensor, is installed at the end of the slide rod of the first sealing and cutting feed guide structure 2-233. By setting the sealing and cutting feed position detection structure to include two sealing and cutting feed position sensors, after the cutter cuts the pre-folded film 2-61, the sealing and cutting feed assembly 2-23 can be kept in the working position, so that the horizontal sealing assembly can hold the medicine bag, which is conducive to the cooperation between the bag making device and the auxiliary bag opening mechanism to complete the pushing process of step S3.

[0121] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An auxiliary bag-opening mechanism, characterized in that, include: A bag-opening lifting drive assembly (3-1), and a bag-opening execution assembly (3-2) installed at the working end (3-12) of the bag-opening lifting drive assembly; the bag-opening execution assembly (3-2) includes: The bag opening guide structure (3-21) includes two bag opening slides (3-211) arranged side by side, and each of the two bag opening slides (3-211) is provided with a bag opening slider (3-212); A pair of bag-opening rods (3-22) are located below the bag-opening guide structure (3-21) and are respectively installed on the two bag-opening sliders (3-212); The bag opening actuator (3-23) is used to drive the bag opening slider (3-212) to reciprocate along the bag opening slide (3-211); along the extension direction of the bag opening actuator (3-23), the two bag opening slides (3-211) include sections that gradually approach each other and then gradually move away from each other.

2. The auxiliary bag-opening mechanism according to claim 1, characterized in that, The bag opening chute (3-211) is strip-shaped, and the extension path of the bag opening chute (3-211) is a smooth curve; From the first end to the second end of the two-pocket slide (3-211), the two-pocket slide (3-211) includes a first curved section (3-2111) that gradually approaches each other and a second curved section (3-2112) that gradually moves away from each other. The second curved section (3-2112) is smoothly connected to the first curved section (3-2111). Preferably, the second end of the two opening slides (3-211) is also provided with a gradually approaching third curved section (3-2113), and the third curved section (3-2113) is smoothly connected to the second curved section (3-2112). Preferably, when the bag opening slider (3-212) is located at the connection between the first curved section (3-2111) and the second curved section (3-2112), the two bag opening rods (3-22) are in contact.

3. The auxiliary bag-opening mechanism according to claim 2, characterized in that, The bag opening lever (3-22) includes: The bag opening rod support (3-221) is used to connect with the bag opening slider (3-212); The bag-opening rod working part (3-222) extends downward from the bottom of the bag-opening support body and is sheet-shaped; along the downward extension direction, the thickness of the bag-opening rod working part (3-222) gradually decreases.

4. The auxiliary bag-opening mechanism according to claim 3, characterized in that, The downward extension length of the working part (3-2221) of the first bag-opening bar is greater than the downward extension length of the working part (3-2222) of the second bag-opening bar. The lower end of the opening rod working part (3-2221) of the first opening rod is provided with a blocking part (3-223) that protrudes and extends toward the side where the second opening rod is located. The blocking part (3-223) is used to block the gap between the opening rod working part (3-2221) of the first opening rod and the opening rod working part (3-2222) of the second opening rod when the opening slider (3-212) is located at the connection between the first curved section (3-2111) and the second curved section (3-2112). Preferably, at least the lower end of the opening rod working part (3-2221) of the first opening rod extends obliquely toward the first or second end of the opening slide (3-211); along the oblique direction of the lower end of the opening rod working part (3-2221) of the first opening rod, the thickness of the lower end of the opening rod working part (3-2221) of the first opening rod gradually decreases.

5. The auxiliary bag-opening mechanism according to claim 3, characterized in that, A vertically penetrating guide connecting shaft (3-224) is provided at the opening rod support body (3-221) of the two opening rods (3-22), and the opening rod support body (3-221) of the two opening rods (3-22) is slidably engaged with the guide connecting shaft (3-224); And / or, an elastic element (3-225) is provided between the opening rod supports (3-221) of the two opening rods (3-22) for driving the two opening rods (3-22) to move closer or further apart from each other.

6. The auxiliary bag-opening mechanism according to any one of claims 1 to 5, characterized in that, The bag-opening transmission connection structure (3-24) between the working end (3-232) of the bag-opening actuator drive structure and the bag-opening slider (3-212) includes: The bag opening transmission connecting block (3-241) is fixed on the working end (3-232) of the bag opening execution drive structure; There are two swing rods (3-242). One end of each swing rod (3-242) is hinged to the bag opening transmission connecting block (3-241), and the other end of each swing rod (3-242) is hinged to the two bag opening sliders (3-212).

7. The auxiliary bag-opening mechanism according to claim 6, characterized in that, The bag opening slide (3-211) is a strip-shaped opening, and the inner edge of the strip-shaped opening is provided with an annular boss (3-2114); The bag opening slider (3-212) abuts against the annular boss (3-2114); or, the annular boss (3-2114) is used for pre-installing the bag opening slider (3-212), and the bag opening slider (3-212) is suspended on the working end (3-232) of the bag opening execution drive structure through the bag opening transmission connection structure (3-24), and is spaced apart from the annular boss (3-2114).

8. The auxiliary bag-opening mechanism according to any one of claims 1 to 5, characterized in that, A lifting position detection component is provided between the main body (3-11) of the bag opening lifting drive component and the working end (3-12) of the bag opening lifting drive component. The lifting position detection component is electrically connected to the bag opening lifting drive component (3-1). An opening position detection component (3-4) is provided between the main body (3-231) of the opening execution drive structure and the working end (3-232) of the opening execution drive structure. The opening position detection component (3-4) is electrically connected to the opening execution drive structure (3-23).

9. A dispensing device, comprising a transmission module, wherein a medicine bag holding mechanism (4) for carrying medicine bags is mounted on the transmission module; characterized in that, The dispensing equipment also includes the auxiliary bag-opening mechanism described in any one of claims 1 to 8; Preferably, the auxiliary bag-opening mechanism is installed above the bag-dispensing station of the dispensing equipment; Preferably, the bag opening actuator (3-2) is configured with: a working position in which the lower end of the bag opening lever (3-22) extends at least partially into the bag holding mechanism (4); and a reset position; The bag opening lever (3-22) is configured in the following positions: a first position in which the bag opening slider (3-212) is located in the middle of the bag opening slide (3-211) and the two bag opening levers (3-22) are in contact with each other; a second position in which the bag opening slider (3-212) is located at the first end of the bag opening slide (3-211) and the two bag opening levers (3-22) are spaced apart; and a third position in which the bag opening slider (3-212) is located at the second end of the bag opening slide (3-211) and the two bag opening levers (3-22) are spaced apart.

10. A control method for the dispensing equipment according to claim 9, wherein the bag-making device of the dispensing equipment sequentially performs vertical sealing, horizontal sealing, and cutting of the pre-folded film (2-61); characterized in that, Control methods include: S1: The bag making device pushes the pre-folded film (2-61) that has been vertically sealed upwards by a certain length, and part of the pre-folded film (2-61) enters the medicine bag holding mechanism (4); S2: The bag opening execution component (3-2) moves to the working position; at this time, the bag opening rod (3-22) is in the first position, and the lower end of the bag opening rod (3-22) is spaced apart from the upper end of the pre-folded film (2-61), or the lower end of the bag opening rod (3-22) is at least partially inserted into the pre-folded film (2-61); S3: The bag making device completes the horizontal sealing and cutting of the pre-folded film (2-61) to obtain a medicine bag, and pushes the obtained medicine bag upward. The medicine bag holding mechanism (4) fixes the medicine bag. S4: The bag opening lever (3-22) completes at least one switch from the first position to the second position and at least one switch from the first position to the third position; S5: The bag opening execution component (3-2) moves to the reset position; Alternatively, the control method includes: after the medicine bag holding mechanism (4) fixes the medicine bag, the bag opening execution component (3-2) moves to the working position, and then, after the bag opening rod (3-22) completes at least one switch from the first position to the second position and at least one switch from the first position to the third position, the bag opening execution component (3-2) moves to the reset position.

Images