Dosing device for continuous soft bag fluid filling and soft bag filling machine

Abstract

The utility model provides a kind of for the control device and soft bag perfusion machine of continuous soft bag to carry out fluid infusion, control device includes support subassembly and pressure application subassembly;Wherein, the top of support subassembly has continuous support surface, or it has the support surface formed by the highest point of multiple interval arrangement support body, for supporting the bottom surface of at least one soft bag after perfusion fluid;The bottom of pressure application subassembly has continuous pressure surface, or it has the pressure surface formed by the highest point of multiple interval arrangement pressure body, for the soft bag top surface of perfusion fluid is compressed;Limited thickness area is formed between support surface and pressure surface, limited thickness area is located in perfusion area, and at least be arranged downstream of perfusion area, so that each soft bag in the final infusion thickness or infusion volume of separation limited thickness area is consistent.The utility model can make soft bag expand to set thickness is physically limited to continue to expand, so as to forcibly control the infusion volume of each soft bag consistent.

Description

Technical Field

[0001] This utility model relates to the field of refrigerated transport equipment technology, and in particular to a volume control device and a soft bag filling machine for continuous soft bag fluid filling. Background Technology

[0002] Ice packs play a crucial role in cold chain transportation and fresh food storage. They continuously provide cooling to prevent spoilage of foods requiring low-temperature preservation, such as fruits, vegetables, and meats. For example, when purchasing seafood, raw meat, or even some fruits that need preservation online, merchants will place several ice packs inside the foam packaging to keep them fresh. The filling inside ice packs is usually pure water or an aqueous solution containing refrigerant. When the ambient temperature is higher than the temperature of the ice pack, the filling inside the ice pack liquefies, absorbing a large amount of heat from the environment, causing the ambient temperature to drop rapidly to a temperature close to that of the ice pack.

[0003] Ice packs are made by injecting liquid filler into soft bags with one-way valves and then freezing them. Patent document CN119262475A discloses a filling device for continuous ice packs. This device can inject water into continuous ice packs. During the water injection process, the injection volume of the ice packs is affected by factors such as water pressure and ice pack conveying speed, making it difficult to ensure that the injection volume of each soft bag reaches a uniform standard. If the injection volume is too high, the ice packs are prone to breakage after freezing; if the injection volume is too low, the cooling capacity of the ice packs is insufficient. Since ice packs are consumables and have low cost, existing methods such as peristaltic pump quantitative filling are costly. Therefore, how to ensure a uniform injection volume for each ice pack in a simple and effective way has become a problem that needs to be solved. Utility Model Content

[0004] In view of this, the present invention provides a volume control device and a soft bag filling machine for continuous soft bag fluid filling, so as to eliminate or improve one or more defects existing in the prior art.

[0005] One aspect of this utility model provides a volume control device for fluid infusion in a continuous soft bag, the continuous soft bag comprising multiple soft bags, the volume control device comprising a support component and a pressure application component; wherein, the top of the support component has a continuous support surface, or a support surface formed by the highest points of multiple spaced-apart support bodies, for supporting the bottom surface of at least one soft bag after fluid infusion; the bottom of the pressure application component has a continuous pressure application surface, or a pressure application surface formed by the highest points of multiple spaced-apart pressure application bodies, for pressing the top surface of the soft bag to which fluid is infused; a thickness-limiting zone is formed between the support surface and the pressure application surface, the thickness-limiting zone being located within the infusion zone and at least downstream of the infusion zone, such that the final infusion thickness or infusion volume of each soft bag remains consistent after leaving the thickness-limiting zone.

[0006] In some embodiments of this utility model, the supporting component includes a first supporting plate or a first supporting strip, the top surface of the first supporting plate or the first supporting strip forming the supporting surface; the top surface of the supporting body is any one of a plane, an arc surface, and a sphere; the pressure applying component includes a second supporting plate or a second supporting strip, the bottom surface of the second supporting plate or the second supporting strip forming the pressure applying surface; the bottom surface of the pressure applying body is any one of a plane, an arc surface, and a sphere.

[0007] In some embodiments of the present invention, at least one of the supporting component and the pressure-applying component includes a first conveying mechanism, which is at least used to move the soft bag from the beginning end of the thickness-limiting zone to the end end of the thickness-limiting zone.

[0008] In some embodiments of this utility model, the measurement control device includes a second conveying mechanism, which is independent of the supporting component and the pressure-applying component. The second conveying mechanism is at least used to move the soft bag from the beginning end of the thickness-limiting zone to the end end of the thickness-limiting zone. The supporting component and the pressure-applying component include a synchronization mechanism, which is used to keep the traveling speed of the soft bag stable with the conveying speed of the second conveying mechanism, or to make the two sides of the soft bag that are pressed by the supporting surface and the pressure-applying surface respectively travel at the same speed under the drive of the synchronization mechanism.

[0009] In some embodiments of this utility model, the measuring device includes a second conveying mechanism, which is independent of the supporting component and the pressure applying component. The second conveying mechanism is at least used to move the soft bag from the beginning end of the thickness limiting area to the end end of the thickness limiting area. The supporting component and the pressure applying component include a drag reducing mechanism for forming rolling friction or sliding friction with the soft bag.

[0010] In some embodiments of this utility model, the height of the thickness limiting zone is consistent along the conveying direction of the soft bag; or, the height of the thickness limiting zone is gradually increased along the conveying direction of the soft bag to adapt to the thickness changes during the filling process of the soft bag.

[0011] In some embodiments of this utility model, the supporting component and the pressure-applying component are connected by a fixedly arranged bracket, so that the relative position between the supporting surface and the pressure-applying surface is fixed; or, the control device further includes a position adjustment mechanism, which is connected to at least one of the supporting component and the pressure-applying component, for actively or passively adjusting the relative position between the supporting surface and the pressure-applying surface.

[0012] In some embodiments of this utility model, the position adjustment mechanism includes a floating mechanism, which is connected to the support component and / or the pressure component. The floating mechanism is configured such that when the filling thickness of the soft bag exceeds the standard height of the thickness limit zone, the floating mechanism controls the support component and / or the pressure component connected to it to be stretched by the soft bag to move linearly or swing, so that the height or angle of the thickness limit zone floats, avoiding the soft bag from being stuck in the thickness limit zone.

[0013] In some embodiments of this utility model, the floating mechanism includes a pressure control component, which is configured such that the thickness limiting zone can simultaneously act on two or more soft bags for filling. After the thickness limiting zone is expanded by at least one soft bag, the pressure control component applies a constant or increasing pressure to the extra-thick soft bag to reduce the filling speed of the extra-thick bag and simultaneously distribute the filling volume to the non-extra-thick bag.

[0014] In some embodiments of this utility model, the measurement control device further includes a thickness marking mechanism for displaying the distance or angle between the support surface and the pressure surface.

[0015] Another aspect of this utility model provides a soft bag filling machine, including the aforementioned volume control device for continuous soft bag fluid filling.

[0016] In this utility model, a volume control device for continuous fluid filling of flexible bags forms a thickness-limiting zone in the direction of bag thickness with the supporting surface of the supporting component and the pressure-applying surface of the pressure-applying component. The height of this thickness-limiting zone is less than the maximum thickness of the flexible bag after it is filled with fluid. During the filling process, the flexible bag is physically restricted from further expansion when it expands to the set thickness, thereby forcibly controlling the filling volume of each flexible bag to be consistent and avoiding uneven filling volume caused by differences in injection pressure or flow resistance. This volume control device is suitable for large-scale filling of continuous flexible bags. It can achieve uniform volume control of batches of flexible bags without relying on manual intervention or complex sensor regulation. The structure and control method are simple, the cost is low, and it can significantly improve filling efficiency. It is especially suitable for automated production lines in the fields of cold chain food and beverage.

[0017] Additional advantages, objects, and features of this invention will be set forth in part in the description which follows, and will in part become apparent to those skilled in the art upon review of the description, or may be learned by practice of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0018] Those skilled in the art will understand that the objectives and advantages achievable with this invention are not limited to those specifically described above, and that the above and other objectives achievable with this invention will become clearer from the following detailed description. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, do not constitute a limitation thereof. The components in the drawings are not drawn to scale but are merely for illustrating the principles of the present invention. For ease of illustration and description of certain parts of the present invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the present invention.

[0020] Figure 1 This is a schematic diagram of the flow control device for fluid filling of a continuous soft bag according to one embodiment of the present invention.

[0021] Figure 2 This is another schematic diagram of a flow control device for fluid filling of a continuous soft bag, according to one embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the structure of an injection device in the prior art.

[0023] Figure 4 This is a schematic diagram of the structure of a continuous flexible bag in the prior art.

[0024] Figure 5 This is a schematic diagram of the supporting component and the pressure-applying component in one embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of a highly uniform thickness-limiting region in one embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the structure of the thickness-limiting region with a consistent height in another embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure of the thickness-limiting region with gradually increasing height in one embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of the thickness-limiting region with gradually increasing height in another embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the supporting component and the pressure-applying component in another embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the control device including a position adjustment mechanism in one embodiment of the present invention.

[0031] Figure 12 This is a front view of a control device including a position adjustment mechanism in one embodiment of the present invention.

[0032] Figure 13 This utility model Figure 12 Sectional view at point CC.

[0033] Figure 14 This utility model Figure 13 Enlarged view of a portion of point A in the middle.

[0034] Figure 15 This is a schematic diagram of a control device including a floating mechanism in one embodiment of the present invention.

[0035] Reference numerals: 1. Support assembly; 11. Roller; 12. Support plate; 13. Rotating shaft; 14. Bracket; 2. Pressure application assembly; 21. Pressure plate; 31. Support frame; 32. Linear bearing; 33. First guide post; 34. Connecting plate; 35. Elastic element; 36. Connecting post; 41. Handle; 42. Fastener; 43. First gasket; 44. Second gasket; 45. Scale; 46. Clearance hole; 5. Soft bag; 51. One-way valve; 52. Water flow channel; 6. Thickness limiting zone. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.

[0037] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0038] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, element, step, or component, but does not exclude the presence or addition of one or more other features, elements, steps, or components.

[0039] It should also be noted that, unless otherwise specified, the term "connection" in this article can refer not only to a direct connection, but also to an indirect connection involving an intermediary.

[0040] In the following description, embodiments of the present invention will be illustrated with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0041] To address the technical problem of ensuring uniform filling volume of various ice packs in a simple and effective manner in existing technologies, the volume control device for continuous fluid filling of soft bags in this embodiment restricts the expansion of the soft bag in the thickness direction during filling by using a thickness limiting zone formed by a supporting component and a pressure applying component. That is, once the fluid in the soft bag reaches a certain filling volume, no more filling can be carried out, and the fluid will flow to soft bags that have not reached the standard filling volume, and so on, so that the filling volume of soft bags passing through the thickness limiting zone in the filling area is uniform. The volume control device and control method of this embodiment are simple, reliable, and low in cost.

[0042] Reference Figure 1 and Figure 2 This utility model provides a volume control device for fluid filling of a continuous soft bag, referred to as the volume control device. The continuous soft bag includes multiple soft bags. The volume control device includes a support component 1 and a pressure application component 2. The top of the support component 1 has a continuous support surface, or a support surface formed by the highest points of multiple spaced-apart support bodies. The support surface formed by the highest points of the support bodies is a virtual plane, which can actually be a point array formed by the highest points of multiple support bodies on the same plane. This point array can achieve the same support effect as a solid support surface and is used to support the bottom surface of at least one soft bag 5 after fluid filling.

[0043] The bottom of the pressure component 2 has a continuous pressure surface, or a pressure surface formed by the highest points of multiple spaced pressure bodies. Similarly, the pressure surface formed by the highest points of the pressure bodies is a virtual plane, which can actually be a point array formed by the lowest points of multiple pressure bodies on the same plane. This point array can achieve the same squeezing effect as a physical pressure surface and is used to compress the top surface of the soft bag 5 containing the injected fluid.

[0044] A thickness-limiting zone 6 is formed between the supporting surface and the pressure-applying surface. When the soft bag 5 is filled with water and expands, its top surface presses against the pressure-applying surface. Due to the obstruction of the pressure-applying surface, the soft bag cannot continue to expand, and the fluid will flow to soft bags that have not reached the standard filling volume, such as soft bags behind it (in the opposite direction of the soft bag conveying direction) that have not reached the standard filling volume. Regardless of the fluctuation of water pressure or conveying speed during the water injection process, the final thickness of the soft bag when it leaves the thickness-limiting zone remains consistent, thereby ensuring that the filling volume of each soft bag reaches a uniform standard.

[0045] A limited thickness zone 6 is formed between the supporting surface and the pressure-applying surface. The supporting surface and the pressure-applying surface can be set vertically. The limited thickness zone 6 is located within the injection zone and is at least located downstream of the injection zone, so that the final injection thickness or injection volume of each soft bag 5 remains consistent after leaving the limited thickness zone 6. (Refer to...) Figure 3 The filling zone is the area where the filling equipment performs soft bag filling. In this embodiment, the volume control device can be installed in the filling zone of the filling equipment.

[0046] The volume control device in this embodiment requires no complex sensors or electrical control components. It relies solely on the mechanical interaction between the supporting surface and the pressure surface to limit the thickness of the soft bag. Its simple structure and low manufacturing and maintenance costs make it ideal for the production of consumables such as ice packs. The device can be easily integrated with existing filling equipment, simultaneously controlling the volume during continuous soft bag transport without affecting production efficiency.

[0047] In one specific implementation, refer to Figure 1 The supporting surface is formed by the highest points of multiple spaced-apart supporting bodies, and the pressure-applying surface is formed by the highest points of multiple spaced-apart pressure-applying bodies. It should be noted that the supporting bodies and pressure-applying bodies can be arranged in a uniformly spaced or non-uniformly dense arrangement, which can compress the top and bottom surfaces of the soft bag, making the top and bottom surfaces of the soft bag approximately on the same plane. In another specific embodiment, refer to... Figure 2 Both the support surface and the pressure surface can be continuous surfaces, providing a large contact area with the soft bag.

[0048] Taking the production of ice packs as an example, refer to Figure 4 Each soft bag 5 has a one-way valve 51 on the same side, and each one-way valve 51 is connected by a water flow channel 52. The one-way valve 51 only allows liquid to enter the soft bag and does not allow liquid to flow out of the soft bag. Liquid with a certain pressure can be injected into the soft bag 5 through the water flow channel 52 and the one-way valve 51. (Refer to...) Figure 3 Rolls or stacks of soft bags can be placed in the ice pack storage area. The water flow channel 52 is fitted onto the water injection pipe, and the starting end of the water flow channel 52 is connected to the traction wheel set. The two sets of sealing wheel sets can press the water flow channel 52 tightly onto the water injection pipe to prevent water from overflowing outside the injection area.

[0049] During filling, pressurized liquid is ejected from the outlet holes on the side wall of the injection pipe. Under pressure differential, the liquid flows into each soft bag 5. The sealing wheel assembly on both sides of the filling area acts as a seal, compressing and sealing the water flow channels of the continuous soft bags to prevent leakage. Under water pressure, the soft bags gradually fill and expand. The support surface and pressure surface of the volume control device provide a rigid barrier structure, physically limiting the further expansion of the soft bags, ultimately ensuring that the filling volume of the soft bags after passing through the filling area is the same. During this process, the traction wheel assembly drives the continuous soft bags to move along the conveying direction, allowing each soft bag to be filled sequentially. The front end of the traction wheel assembly has a blade that can cut open the water flow channels 52.

[0050] The thickness-limited area can accommodate one or more soft bags at the same time, for example, it can accommodate 2, 3, 5 or more soft bags at the same time.

[0051] For example, when accommodating a soft bag, the traction mechanism of the soft bag filling equipment moves the soft bag to the thickness limit area and then stops moving; after filling is completed, the traction mechanism moves the soft bag to the next station, and at the same time moves another unfilled soft bag to the thickness limit area for filling.

[0052] For example, when accommodating multiple soft bags, the traction mechanism of the soft bag filling machine can be in a continuous motion form, driving each soft bag slowly through the thickness-limiting zone. The soft bags in the thickness-limiting zone can be filled simultaneously. The filling port of the soft bag filling equipment can be set near the end of the thickness-limiting zone (at a rearward position in the direction of soft bag movement). The fluid pressure near the filling port is relatively high, so that the soft bags near the end of the thickness zone are filled first, and then the fluid can flow into other soft bags. The traction mechanism can ensure that the soft bags are in a state of being filled before leaving the thickness-limiting zone.

[0053] The soft bags in the above embodiments can be filled with various fluids, such as water, which, after freezing, forms ice packs that can be used in large supermarkets. Large supermarkets can also use the aforementioned volume control device to manufacture ice packs in large quantities for the preservation of chilled and fresh food. The soft bags can also be filled with beverages, condiments, and other food products, for example, they can be used in vinegar production plants. The soft bags can also be filled with gas to form air bags, which can be placed in packaging boxes for cushioning and shock absorption. The sides of each soft bag are connected to form a continuous soft bag system.

[0054] It should be noted that in the filling zone, the soft bag is continuously filled. Once the soft bag leaves the filling zone, no more filling will be carried out. Therefore, the thickness limiting zone should be set at least downstream or at the end of the filling zone to ensure that the soft bag reaches the set filling volume and no more filling will be carried out after leaving the thickness limiting zone.

[0055] In this embodiment, there can be a gap (i.e., the height or thickness of the thickness-limiting zone) between the supporting surface and the pressure-applying surface. This gap corresponds one-to-one with the amount of fluid injected into the soft bag. This gap is less than the maximum thickness of the soft bag after it is filled with fluid. For example, if the maximum thickness of the soft bag after it is filled with fluid is 5cm, and the gap is set to 3cm, the corresponding injection volume is 300ml; if the gap is set to 4cm, the corresponding injection volume is 400ml.

[0056] During the filling process, when the soft bag 5 expands to the set distance between the support surface and the pressure surface, it is physically restricted to prevent further filling. This forces consistent maximum filling volume for each soft bag, avoiding uneven filling volume caused by differences in injection pressure or flow resistance. This volume control device is suitable for large-scale continuous soft bag filling, achieving uniform volume control for batches of soft bags without relying on manual intervention or complex sensor regulation, significantly improving filling efficiency. It is particularly suitable for automated production lines in the cold chain food and beverage industries.

[0057] In some embodiments, the support component 1 includes a first support plate or a first support strip, the top surface of which forms a support surface; capable of providing complete and stable support for the bottom of the soft bag 5. The top surface of the support can be any one of a plane, an arc surface, or a sphere.

[0058] The pressure-applying component 2 includes a second support plate or a second support strip, the bottom surface of which forms a pressure-applying surface; ensuring uniform pressure is applied to the top surface of the soft bag. The bottom surface of the pressure-applying component can be any one of a plane, a curved surface, or a sphere.

[0059] The support plate and support belt are not easily deformed and can provide planar contact. The support and pressure body can be made of discrete protrusions or ribs. Compared with manufacturing large continuous plates, using multiple support and pressure bodies can significantly reduce the use of raw materials, reduce overall manufacturing costs and weight, and make the structure lighter.

[0060] In one specific embodiment, reference is made to Figure 5 The supporting assembly 1 includes a support plate 12, multiple rotating shafts 13, and rollers 11. The pressure applying assembly 2 includes a pressure plate 21, multiple rotating shafts 13, and rollers 11. The rotating shafts 13 are mounted on the support plate 12 and the pressure plate 21. Each rotating shaft 13 has multiple rollers 11. The rollers 11 can be fixed relative to the support plate 12 and the pressure plate 21, or rotatably mounted relative to them. The support plate 12 and the pressure plate 21, as the core mounting base, provide a robust, flat, and stable mounting reference for all rollers 11, ensuring that the axial positions of all rollers 11 are precisely positioned. This ensures that the thickness-limiting area formed by them maintains overall consistency and accuracy, fundamentally guaranteeing that all soft bags 5 have the same filling thickness. In this embodiment, the rollers 11 are discretely arranged. From an overall perspective, they form a dense and uniform support matrix on the surface of the soft bag 5, which effectively prevents the soft bag 5 from local over-expansion in the gaps between the rollers 11, ensuring the continuity and consistency of thickness control. Its limiting effect is close to that of a continuous plane.

[0061] In the above embodiments, each roller 11 in the supporting component 1 or the pressure applying component 2 can be divided into multiple first roller groups and multiple second roller groups. Both the first roller group and the second roller group include multiple rollers 11. The rollers 11 in adjacent first roller groups and second roller groups are staggered, or the rollers in the supporting component 1 and the pressure applying component 2 are staggered in the vertical direction.

[0062] For example, the area formed by all the rollers on the pallet 12 (lower roller area) has the same area as the area formed by all the rollers on the pressure plate 21 (upper roller area). The length of the lower roller area and the upper roller area is greater than or equal to the length of a single soft bag, and the width of the lower roller area and the upper roller area is greater than or equal to half the width of a single soft bag. The length direction of the lower roller area, the upper roller area and the soft bag is the direction of soft bag conveying, and the width direction of the lower roller area, the upper roller area and the soft bag is perpendicular to the direction of soft bag conveying, and the length and width directions are located on the horizontal plane.

[0063] In another specific embodiment, both the supporting component 1 and the pressure-applying component 2 are flat plates with smooth surfaces, which can provide large-area, uniform support and restraint for the sides of the soft bag 5, avoiding excessive local stress when the soft bag is expanded and compressed, and effectively preventing scratches, indentations or deformations on the surface of the bag due to point or line contact. It is especially suitable for soft packaging bags with soft surface materials or exquisite printing.

[0064] In some embodiments, at least one of the supporting component 1 and the pressure applying component 2 includes a first conveying mechanism. The first conveying mechanism is at least used to move the soft bag 5 from the beginning end of the thickness limiting region 6 to the end end of the thickness limiting region 6. The first conveying mechanism may include powered rollers 11. Some or all of the rollers 11 in the supporting component 1 and the pressure applying component 2 are powered, and the soft bag is moved along the conveying direction by the rotation of the rollers 11. Anti-slip textures that increase friction may be provided on the arc-shaped surface of the rollers 11 to prevent the soft bag from slipping on the rollers 11. This embodiment is applicable to situations where the filling equipment itself does not have a conveying mechanism.

[0065] In some embodiments, the measurement control device includes a second conveying mechanism, which is independent of the supporting component 1 and the pressure applying component 2. The second conveying mechanism is at least used to move the soft bag 5 from the beginning end of the thickness limiting zone 6 to the end end of the thickness limiting zone 6. The second conveying mechanism may be an existing conveying mechanism such as a friction wheel traction mechanism or a chain conveyor mechanism.

[0066] In one specific embodiment, the supporting component 1 and the pressure applying component 2 include a synchronization mechanism for keeping the traveling speed of the soft bag 5 stable with the conveying speed of the second conveying mechanism. The synchronization mechanism can be a conveyor belt or a timing belt, which drives the soft bag to move so that the moving speed of the soft bag is the same as the running speed of the traction mechanism in the filling equipment.

[0067] In another specific embodiment, the supporting component 1 and the pressure-applying component 2 include a synchronization mechanism, which can be selected as two upper and lower conveyor belts or synchronous belts. The two conveyor belts or synchronous belts clamp the soft bag 5 and move at the same speed, so that the two sides of the soft bag 5, which are supported and pressed respectively, move at the same speed under the drive of the synchronization mechanism, preventing the soft bag from twisting. The conveyor belts or synchronous belts themselves are either powered or unpowered.

[0068] In some embodiments, the measurement control device includes a second conveying mechanism, which is independent of the supporting component 1 and the pressure applying component 2. The second conveying mechanism is at least used to move the soft bag 5 from the beginning end of the thickness limiting zone 6 to the end end of the thickness limiting zone 6. The second conveying mechanism may be an existing conveying mechanism such as a friction wheel traction mechanism or a chain conveyor mechanism.

[0069] The supporting assembly 1 and the pressure-applying assembly 2 include a drag-reducing mechanism for generating rolling or sliding friction with the soft bag 5. The drag-reducing mechanism can be a rolling element, which can be a roller, shaft, or ball bearing. When the soft bag passes through the thickness-limiting zone, the rolling element can rotate around its own axis under the drive of the soft bag, thereby reducing the resistance between the soft bag and the supporting and pressure-applying surfaces. Alternatively, the drag-reducing mechanism can be a guide rail, and the surface of the guide rail that contacts the soft bag 5 can be a smooth, hard surface, reducing the friction of the soft bag 5 on the guide rail. The drag-reducing mechanism ensures extremely smooth movement of the soft bag 5 in the filling area, avoiding problems such as bag deformation, jamming, or damage to the filling port caused by excessive friction, making it suitable for high-speed automated production lines.

[0070] In some embodiments, the height of the thickness limiting region 6 is consistent along the conveying direction of the soft bag 5. For example, refer to Figure 6 The pressure surface and the support surface are parallel to each other, making the height of the thickness-limiting zone 6 consistent, or, referring to Figure 7 Both the pressure surface and the support surface are curved, and the vertical height of both surfaces is the same, so that the height of the thickness limiting zone 6 is consistent.

[0071] In other embodiments, the height of the thickness-limiting region 6 is gradually increased along the conveying direction of the soft bag 5 to accommodate thickness changes during the filling process of the soft bag 5. For example, refer to Figure 8 The supporting surface can be horizontal, and the pressure surface can be inclined. The distance between the supporting surface and the pressure surface gradually increases along the conveying direction of the soft bag, or, refer to... Figure 9 Both the supporting surface and the pressure-applying surface can be inclined, and the distance between the supporting surface and the pressure-applying surface gradually increases along the direction of soft bag conveying. This design allows the soft bag 5 to be restricted by the supporting surface and the pressure-applying surface before it reaches the standard filling thickness or volume, facilitating thickness control during the filling process. Compared to embodiments where the thickness-limiting zone 6 has a uniform height, this embodiment allows for pressure-based thickness control at the initial stage of soft bag filling. This enables control over the filling volume of the soft bag throughout or for most of the filling process, enhancing the controllability of soft bag thickness control.

[0072] In some embodiments, refer to Figure 10The supporting component 1 and the pressure-applying component 2 are connected by a fixed bracket 14, which fixes the relative position between the supporting surface and the pressure-applying surface. Specifically, the bracket 14 is fixedly connected to the support plate 12 and the pressure plate 21, respectively. The bracket 14 provides a rigid connection to prevent the soft bags from deforming the support plate 12 and the pressure plate 21 under water pressure, thereby ensuring that the filling volume of each soft bag is consistent.

[0073] In other embodiments, the control device further includes a position adjustment mechanism connected to at least one of the support assembly 1 and the pressure application assembly 2, for actively or passively adjusting the relative position between the support surface and the pressure application surface. (Refer to...) Figure 11 The position adjustment mechanism includes a support frame 31, a first guide post 33, and a connecting plate 34. The bottom of the support frame 31 is fixedly connected to the support plate 12, and the top of the support frame 31 is vertically slidably connected to the first guide post 33 via a linear bearing 32. The connecting plate 34 is fixedly connected to the middle of the first guide post 33, and the edge of the connecting plate 34 is fixedly connected to the pressure plate 21 via a connecting post 36. By adjusting the height of the connecting plate 34, the distance between the support surface and the pressure surface can be adjusted. Multiple first guide posts 33 can be provided to provide guidance. The connecting plate 34 can be moved by one of the following: a handle adjustment mechanism, a hydraulic cylinder mechanism, a pneumatic cylinder mechanism, or a linear motor mechanism. Alternatively, the position adjustment mechanism can include one of the following: a hydraulic cylinder mechanism, a pneumatic cylinder mechanism, or a linear motor mechanism, and can be directly fixedly connected to the pressure plate 21.

[0074] Reference Figures 12 to 14 The handle adjustment mechanism includes a handle 41, a fastener 42, a first washer 43, and a second washer 44. A support frame 31 is fixedly mounted. The middle part of the handle 41 is threadedly connected to the support frame 31. The fastener 42 can be a screw or bolt, and is fixedly connected to the bottom of the handle 41. The fastener 42 passes through the connecting plate 34 and is coaxial with the handle 41. A limiting plate is located at the end of the fastener 42 facing away from the handle 41. The first washer 43 and the second washer 44 are fitted onto the fastener 42. The first washer 43 is located between the limiting plate and the connecting plate 34, and the second washer 44 is located between the connecting plate 34 and the end face of the handle 41 near the connecting plate 34. The first washer 43 and the second washer 44 hug the connecting plate 34, allowing the handle 41 to rotate relative to the connecting plate 34 and to move the connecting plate 34 up and down, thereby adjusting the relative position between the supporting surface and the pressure surface.

[0075] This configuration allows the volume control device to be adapted to different sizes of soft bags. For example, when using small-sized soft bags, the distance between the support surface and the pressure surface can be reduced by adjusting the position adjustment mechanism; when using large-sized soft bags, the distance between the support surface and the pressure surface can be increased by adjusting the position adjustment mechanism. This allows the same volume control device to adapt to the production of soft bags with different capacities and thicknesses, greatly improving the versatility and flexibility of the equipment.

[0076] In some embodiments, the position adjustment mechanism includes a floating mechanism connected to the support component 1 and / or the pressure component 2. The floating mechanism is configured such that, after the filling thickness of the soft bag 5 exceeds the standard height of the thickness limit zone 6, the floating mechanism controls the support component 1 and / or the pressure component 2 connected to it to be stretched open by the soft bag 5 to move linearly or swing, so that the height or angle of the thickness limit zone 6 floats, preventing the soft bag 5 from being stuck by the thickness limit zone 6. In this embodiment, the standard height refers to the distance between the support surface and the pressure surface of the soft bag after it is filled with fluid. For example, if the volume of the soft bag is 500ml, the actual required filling volume can be selected as 400ml to prevent the liquid inside the soft bag from freezing and expanding, damaging the soft bag. The standard height is a height value that is manually set or adjusted according to the actual situation. This height value can be the target filling volume (the actual required filling volume) of the corresponding soft bag.

[0077] In one specific embodiment, reference is made to Figure 15 The floating mechanism includes a support frame 31, a handle 41, and a connecting plate 34. The support frame 31 is fixedly installed, the middle part of the handle 41 is threadedly connected to the support frame 31, the bottom of the support frame 31 is fixedly connected to the support plate 12, and the bottom of the handle 41 is connected to the connecting plate 34. The handle 41 is used to keep the connecting plate 34 fixed and also to adjust the height of the connecting plate 34 relative to the support frame 31.

[0078] The connecting plate 34 is indirectly connected to the pressure plate 21. Specifically, the connecting plate 34 has connecting posts 36 at its four corners. The connecting posts 36 can slide vertically relative to the connecting plate 34 without detaching from it. The bottom of the connecting posts 36 is fixedly connected to the pressure plate 21. When the filling thickness of the soft bag 5 exceeds the standard height of the thickness limit zone 6, the soft bag 5 can lift the pressure application component 2, and the supporting component 1 will drive the connecting posts 36 to rise. Note that the setting method of the connecting posts 36 in this embodiment is different from that in the above embodiments.

[0079] Multiple first guide posts 33 are provided between the top of the support frame 31 and the connecting plate 34. One end of the first guide post 33 is slidably connected to the support frame 31 via a linear bearing 32, and the other end of the first guide post 33 is fixedly connected to the pressure application component 2. The middle part of the first guide post 33 passes through the connecting plate 34 and is slidably disposed with the connecting plate 34. The arrangement of the first guide post 33 can enhance the guiding effect of the up and down movement of the pressure plate 21. A force application component can be provided in the part of the first guide post 33 located between the connecting plate 34 and the pressure plate 21. This force application component can provide a certain clamping force so that the pressure surface is not easily pushed up by the soft bag. At the same time, it can be pushed up by the soft bag after the filling thickness of the soft bag 5 exceeds the standard height of the thickness limit zone 6, preventing the soft bag from getting stuck.

[0080] In some embodiments, the floating mechanism includes a pressure control component configured such that the thickness limiting zone 6 can simultaneously act on two or more soft bags 5 for filling. After the thickness limiting zone 6 is expanded by at least one soft bag 5, the pressure control component applies a constant or increasing pressure to the extra-thick soft bags 5 to reduce the filling rate of the extra-thick bags, while simultaneously distributing the filling volume to the non-extra-thick bags. This configuration allows the extra-thick bags located in the thickness limiting zone 6 to experience resistance during expansion, preventing further fluid filling into the extra-thick bags, while simultaneously distributing the filling volume to the non-extra-thick bags. This results in approximately synchronous expansion of the bags located in the thickness limiting zone 6, preventing the filling volume of a single bag from being significantly greater than that of its surrounding bags. This enhances the uniformity of the filling volume of the same batch of soft bags 5 within the thickness limiting zone 6, and reduces the variance and fluctuation of the final filling volume data of the same batch of soft bags 5.

[0081] The pressure control component can be selected as elastic element 35, see reference. Figure 15 The elastic element 35 is disposed on the portion of the first guide post 33 located between the connecting plate 34 and the pressure plate 21. When the soft bag squeezes the pressure application component 2 and causes the pressure application component 2 to rise, the elastic element 35 is compressed. As the compression increases, the elastic element 35 can provide incremental pressure to prevent the pressure application component 2 from moving excessively upward and to allow the pressure application component 2 to quickly return to its original position. The filling thickness of the soft bag 5 exceeding the standard height of the thickness limit zone 6 occurs within a very short time and can be caused by pressure fluctuations in the water pressure. The elastic element 35 includes, for example, but not limited to, a spring. In one specific embodiment, the spring is sleeved on the first guide post 33. The spring can be vertically arranged, with its top fixedly connected to or abutting against the connecting plate 34 and its bottom fixedly connected to or abutting against the pressure plate 21. When the pressure application component 2 is raised, the spring is compressed and shortened. According to the spring force calculation formula F=kx, where F is the spring force, k is the spring constant, and x is the spring deformation, the spring force gradually increases as the pressure application component 2 is raised, thus the spring can provide incremental pressure.

[0082] The pressure control component can also be a constant pressure applying component such as a pneumatic cylinder or a hydraulic cylinder. The movable end of the pneumatic or hydraulic cylinder is connected to the pressure plate 21, and the fixed end of the pneumatic or hydraulic cylinder is fixedly connected to the support frame 31. The pneumatic or hydraulic cylinder is powered by an air pump or a hydraulic motor and can be set to a constant pressure, unaffected by the extension or retraction of the pneumatic or hydraulic cylinder.

[0083] In some embodiments, the measurement control device further includes a thickness marking mechanism for displaying the distance or angle between the support surface and the pressure surface. (See reference...) Figure 12 The thickness marking mechanism includes a ruler 45, which is vertically positioned and its top can be fixedly connected to the support frame 31. The edge of the connecting plate 34 has a clearance hole 46 through which the ruler 45 can pass. The connecting plate 34 can protect the ruler 45. The ruler 45 is positioned to facilitate observation of the position of the connecting plate 34 or the height of the thickness-limiting zone, and the spacing value of the current thickness-limiting channel can be read directly and accurately.

[0084] In the above embodiments, the soft bags can be conveyed in an intermittent manner. For example, after the four soft bags are conveyed to the thickness limit area, they stop moving and are filled at the same time. After the filling is completed, the four soft bags are conveyed to the next station at the same time to ensure that all soft bags in the thickness limit area are filled synchronously.

[0085] The soft bags in the above embodiments can also be conveyed in a continuous manner. When filling the first few soft bags, each soft bag is filled synchronously. After the first soft bag is filled, the traction mechanism or the conveying mechanism drives the soft bags forward in sequence to realize the sequential filling of each soft bag.

[0086] In some embodiments, when the top of the supporting component 1 has a continuous supporting surface, the area of ​​the supporting surface that contacts the bottom surface of the same soft bag accounts for 50%-90% of the area of ​​the bottom surface of the soft bag; or the supporting bodies are equally spaced, and the sum of the top areas of multiple supporting bodies used to support the bottom surface of the same soft bag accounts for 10%-50% of the area of ​​the bottom surface of the soft bag. When the bottom of the pressure applying component 2 has a continuous pressure applying surface, the area of ​​the pressure applying surface that contacts the top surface of the same soft bag accounts for 50%-90% of the area of ​​the top surface of the soft bag; or the pressure applying bodies are equally spaced, and the sum of the bottom areas of multiple pressure applying bodies used to press the top surface of the same soft bag accounts for 10%-50% of the area of ​​the bottom surface of the soft bag.

[0087] In the above embodiments, the continuous support surface and continuous pressure surface have sufficient contact area, which can make the force on the sides of the soft bag even and ensure that the expansion amount of the soft bag is equal throughout. The equally spaced support and pressure body have point contact or small surface contact with the soft bag. The dispersed point contact makes the bottom or top surface of the soft bag approximately on the same plane, preventing overfilling and excessive expansion. The setting of support and pressure body can save materials.

[0088] This utility model embodiment also provides a soft bag filling machine, including a volume control device for continuous soft bag fluid filling. The soft bag filling machine can not only achieve automatic filling of continuous soft bags, but also control the filling volume of each soft bag to be the same.

[0089] It should be clarified that this utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this utility model.

[0090] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0091] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A volume control device for fluid filling in continuous flexible bags, the continuous flexible bags comprising a plurality of flexible bags (5), characterized in that, The quantity control device includes a support component (1) and a pressure application component (2). The top of the support component (1) has a continuous support surface, or a support surface formed by the highest points of multiple spaced support bodies, for supporting the bottom surface of at least one soft bag (5) after the infusion fluid is injected. The bottom of the pressure-applying component (2) has a continuous pressure-applying surface, or a pressure-applying surface formed by the highest points of multiple spaced pressure-applying bodies, for pressing the top surface of the soft bag (5) into which the infusion fluid is injected. A limited thickness zone (6) is formed between the support surface and the pressure surface. The limited thickness zone (6) is located within the injection zone and is at least located downstream of the injection zone, so that each soft bag (5) maintains the same final injection thickness or injection volume after leaving the limited thickness zone (6).

2. The flow control device for continuous fluid filling of a soft bag according to claim 1, characterized in that, The supporting component (1) includes a first supporting plate or a first supporting strip, the top surface of the first supporting plate or the first supporting strip forming the supporting surface; The top surface of the support can be any one of a plane, an arc surface, or a sphere; The pressure application component (2) includes a second support plate or a second support strip, the bottom surface of which forms the pressure application surface; The bottom surface of the pressure-applying body can be any one of a plane, an arc surface, or a sphere.

3. The flow control device for continuous fluid filling of a soft bag according to claim 1, characterized in that, At least one of the supporting component (1) and the pressure-applying component (2) includes a first conveying mechanism, which is at least used to move the soft bag (5) from the beginning of the thickness-limiting zone (6) to the end of the thickness-limiting zone (6).

4. The flow control device for continuous fluid filling of a soft bag according to claim 1, characterized in that, The volume control device includes a second conveying mechanism, which is independent of the supporting component (1) and the pressure application component (2). The second conveying mechanism is at least used to move the soft bag (5) from the beginning of the thickness limiting area (6) to the end of the thickness limiting area (6). The supporting component (1) and the pressure-applying component (2) include a synchronization mechanism for keeping the travel speed of the soft bag (5) stable with the transmission speed of the second conveying mechanism, or for making the two sides of the soft bag (5) pressed by the supporting surface and the pressure-applying surface move at the same speed under the drive of the synchronization mechanism.

5. The flow control device for continuous fluid filling of a soft bag according to claim 1, characterized in that, The volume control device includes a second conveying mechanism, which is independent of the supporting component (1) and the pressure application component (2). The second conveying mechanism is at least used to move the soft bag (5) from the beginning of the thickness limiting area (6) to the end of the thickness limiting area (6). The supporting component (1) and the pressure-applying component (2) include a drag-reducing mechanism for generating rolling or sliding friction with the soft bag (5).

6. The flow control device for continuous fluid filling of a soft bag according to claim 1, characterized in that, Along the conveying direction of the soft bag (5), the height of the thickness limiting area (6) is consistent; or, Along the conveying direction of the soft bag (5), the height of the thickness limiting area (6) is gradually increased to accommodate the thickness changes during the filling process of the soft bag (5).

7. The flow control device for continuous fluid filling of a soft bag according to claim 1, characterized in that, The supporting component (1) and the pressure-applying component (2) are connected by a fixed bracket, so that the relative position between the supporting surface and the pressure-applying surface is fixed; Alternatively, the control device may further include a position adjustment mechanism connected to at least one of the support component (1) and the pressure application component (2) for actively or passively adjusting the relative position between the support surface and the pressure application surface.

8. The flow control device for continuous fluid filling of a soft bag according to claim 7, characterized in that, The position adjustment mechanism includes a floating mechanism connected to the support component (1) and / or the pressure component (2). The floating mechanism is configured such that after the filling thickness of the soft bag (5) exceeds the standard height of the thickness limit area (6), the floating mechanism controls the support component (1) and / or the pressure component (2) connected to it to be stretched by the soft bag (5) to move linearly or swing, so that the height or angle of the thickness limit area (6) floats, and the soft bag (5) is prevented from being stuck by the thickness limit area (6).

9. The flow control device for continuous fluid filling of a soft bag according to claim 8, characterized in that, The floating mechanism includes a pressure control component. The pressure control component is configured such that the thickness limiting zone (6) can simultaneously act on two or more soft bags (5) for filling. After the thickness limiting zone (6) is opened by at least one soft bag (5), the pressure control component forms a constant or increasing pressure on the extra-thick soft bag (5) to reduce the filling speed of the extra-thick bag and at the same time distribute the filling volume to the non-extra-thick bag.

10. The flow control device for continuous fluid filling of a soft bag according to claim 7, characterized in that, The measurement control device also includes a thickness marking mechanism for displaying the distance or angle between the support surface and the pressure surface.

11. A soft bag filling machine, characterized in that, Includes the volume control device for continuous fluid filling of a soft bag as described in any one of claims 1-10.

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