An integrated welding device for medical liquid bag production

Abstract

This invention relates to the field of medical liquid bag technology, specifically to an integrated welding device for the production of medical liquid bags. The device includes a bag loading station, a membrane loading station, a membrane assembly station, an inlet pipe loading station, a welding and mold closing station, an outlet pipe loading station, and a unloading station. This invention designs a specialized integrated welding device for the production of medical liquid bags, loading each component separately and using a rotatable worktable to centrally gather all components at the welding station. The overall design is reasonable and ingenious, greatly improving the production efficiency of medical liquid bags. It is applicable to different models and varieties of medical liquid bags, exhibiting high practicality and a wide range of applications.

Description

Technical Field

[0001] This invention relates to the field of medical liquid bag technology, and more specifically to an integrated welding device for the production of medical liquid bags. Background Technology

[0002] In the field of medical devices, medical fluid bags used to hold various liquids have a wide range of applications, including but not limited to various types and styles of drainage bags, feeding bags, infusion bags, nutrient storage bags, etc.

[0003] Due to the increasingly widespread application of medical fluid bags, their practical performance has gained widespread recognition, leading to a growing market demand. The production process of medical fluid bags requires the upper and lower bag bodies to be heat-fused with the inlet pipe, outlet pipe, and check liner. However, in current production lines, these parts are welded separately, resulting in extremely low work efficiency and severely impacting production efficiency and economic benefits. Therefore, there is an urgent need to design an automated welding device that can simultaneously weld all components in large batches. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated welding device for the production of medical liquid bags that can simultaneously weld various components inside the medical liquid bag, thereby improving production efficiency and meeting the production needs of medical liquid bags of different models and sizes.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an integrated welding device for the production of medical liquid bags, the device comprising a bag feeding station, a membrane feeding station, a membrane assembly station, an inlet pipe feeding station, a welding and mold closing station, an outlet pipe feeding station, and a discharge station.

[0006] The bag loading station is used to load the upper and lower bags of the medical liquid bag, and the bag loading station guides the welding and mold closing station;

[0007] The membrane loading station is used to load the upper and lower membrane bodies of the check valve membrane, and the membrane loading station guides the membrane assembly station;

[0008] The liquid inlet pipe loading station is used to load the liquid inlet pipe, and the liquid inlet pipe loading station is guided to the membrane assembly station;

[0009] The liquid outlet pipe loading station is used to load the liquid outlet pipe, and the liquid outlet pipe loading station is guided to the welding mold closing station;

[0010] The membrane assembly station is used to assemble the check membrane and the inlet pipe, and the membrane assembly station leads to the welding and mold closing station.

[0011] The welding and molding station is used to weld the assembled inlet pipe, check membrane, upper and lower bag bodies, and outlet pipe of the same batch as a whole to obtain a formed medical liquid bag, which is then guided to the unloading station for unloading.

[0012] Furthermore, the bag feeding station includes a first feeding roller storing an upper bag in the shape of a roller and a second feeding roller storing a lower bag in the same shape as a roller. The bag feeding station also includes two leveling mechanisms, which respectively flatten the upper bag and the lower bag.

[0013] The leveling mechanism includes a fixed plate, a leveling plate is provided on the fixed plate, and a limiting plate is provided above the leveling plate. The bag body passes through the leveling plate and the limiting plate.

[0014] A slider is fixedly connected to the bottom of the flat plate, and a linear guide rail is provided below the flat plate. The slider slides on the linear guide rail, and the direction of the linear guide rail is perpendicular to the feeding direction of the bag.

[0015] Furthermore, the slider is connected to a handwheel.

[0016] Furthermore, the film feeding station includes a third feeding roller storing an upper film in the shape of a roller and a fourth feeding roller storing a lower film in the same shape as a roller.

[0017] The film loading station also includes a scissor mechanism, which cuts the upper and lower film bodies during loading.

[0018] Furthermore, the liquid inlet pipe feeding station includes a vibratory feeder connected to a first feeding guide rail, which is connected to a steering box. The liquid inlet pipe feeding station also includes an ejection mechanism, which includes a push rod that can move back and forth. A steering track is provided inside the steering box, which is connected to the first feeding guide rail and also connected to a guide pipe. The push rod can push the liquid inlet pipe into the guide pipe.

[0019] Furthermore, the membrane assembly station includes a rotatable worktable, on which four assembly mechanisms are arranged in a circular array. The worktable can be raised and lowered simultaneously. Each assembly mechanism includes a mounting base, on which a slide rail is provided, and on which a sliding seat is provided. The sliding seat can move on the slide rail, and a sleeve is fixedly installed on the sliding seat. The liquid inlet pipe can be fitted onto the sleeve.

[0020] Three of the four assembly mechanisms are initially positioned opposite the membrane feeding station, the liquid inlet pipe feeding station, and the welding and mold closing station, respectively. A detection mechanism is provided at the initial position of the last assembly mechanism. The detection mechanism uses sensors to detect the upper and lower membranes of the check diaphragm attached to the liquid inlet pipe.

[0021] Furthermore, the welding mold closing station includes an upper mold plate and a lower mold plate. A first upper mold hole, a first lower mold hole, a second upper mold hole, and a second lower mold hole are respectively provided on the middle of both sides of the upper mold plate and the lower mold plate. The shape formed by the first upper mold hole and the first lower mold hole matches the size of the liquid inlet pipe and the check diaphragm sleeved on the sleeve. The shape formed by the second upper mold hole and the second lower mold hole matches the size of the liquid outlet pipe.

[0022] Before the sleeve rotates with the worktable to align with the upper and lower mold holes, the worktable first rises, and after rotating into position, the worktable lowers, causing the sleeve to fall onto the lower mold hole.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] This invention designs a specialized integrated welding device for the production of medical liquid bags. It feeds each component separately and uses a rotating worktable to gather all components together at the welding station. The overall design is reasonable and the structure is ingenious, which can greatly improve the production efficiency of medical liquid bags. It can be applied to different models and varieties of medical liquid bags, has high practicality, and a wide range of applications. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 This is another overall structural schematic diagram of the present invention;

[0027] Figure 3 This is another overall structural schematic diagram of the present invention;

[0028] Figure 4 for Figure 2 A schematic diagram of the local structure at point A in the middle;

[0029] Figure 5 for Figure 3 A schematic diagram of the local structure at point B;

[0030] Figure 6 for Figure 1 A schematic diagram of the local structure at point C;

[0031] Figure 7 for Figure 2A schematic diagram of the local structure at point D;

[0032] Figure 8 for Figure 1 A schematic diagram of the local structure at point E in the middle;

[0033] Figure 9 for Figure 2 A schematic diagram of the local structure at point F;

[0034] Figure 10 This is a schematic diagram of the upper and lower adsorption blocks.

[0035] In the diagram: 1-Bag loading station; 2-Membrane loading station; 3-Membrane assembly station; 4-Inlet pipe loading station; 5-Welding and mold closing station; 6-Outlet pipe loading station; 7-Unloading station; 11-First loading roller; 12-Second loading roller; 13-Leveling mechanism; 131-Fixing plate; 132-Leveling plate; 133-Limiting plate; 134-Slider; 135-Linear guide rail; 136-Handwheel; 21-Third loading roller; 22-Fourth loading roller; 23- 24-Scissors mechanism; 41-Pressure mechanism; 42-Vibrating plate; 43-First feeding guide rail; 44-Tuning box; 45-Ejection mechanism; 46-Ejector rod; 31-Workbench; 32-Assembly mechanism; 321-Mounting base; 322-Slide rail; 323-Sliding seat; 324-Sleeve; 33-Detection mechanism; 51-Upper template; 52-Lower template; 53-First upper mold hole; 54-First lower mold hole; 55-Second upper mold hole; 56-Second lower mold hole. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 9 As shown, the integrated welding device for the production of medical liquid bags according to the present invention includes a bag feeding station 1, a membrane feeding station 2, a membrane assembly station 3, an inlet pipe feeding station 4, a welding and mold closing station 5, an outlet pipe feeding station 6, and a discharge station 7.

[0038] Among them, the bag feeding station 1 includes a first feeding roller 11 and a second feeding roller 12. These two feeding rollers are used to place the upper bag body and the lower bag body of the medical liquid bag, respectively. The upper bag body and the lower bag body pass through several roller shafts and reach two leveling mechanisms 13, respectively.

[0039] The leveling mechanism 13 is used to flatten the bag body, ensuring it is in a flat state when it enters the welding and mold-closing station 5. Specifically, it includes a fixed plate 131, a leveling plate 132 above the fixed plate 131, and a limiting plate 133 above the leveling plate 132. The bag body passes between the leveling plate 132 and the limiting plate 133. A slider 134 is fixedly connected to the bottom of the leveling plate 132, and a linear guide rail 135 is also provided below the leveling plate 132. The slider 134 can slide on the linear guide rail 135, which is perpendicular to the feeding direction of the bag body. This allows the operator to fine-tune the feeding angle of the upper and lower bag bodies according to the actual situation. In addition, the slider 134 can be driven to a handwheel 136, which facilitates fine-tuning operations by the operator.

[0040] In this embodiment, there are two linear guides 135 and four sliders 134, which ensures overall stability.

[0041] On the other side, the film loading station 2 includes a third loading roller 21 and a fourth loading roller 22. Similar to the first loading roller 11 and the second loading roller 12, the third loading roller 21 and the fourth loading roller 22 are used to place the upper and lower films of the check film, which are in the shape of rollers.

[0042] After passing through several rollers, the upper and lower membrane bodies reach the shear mechanism 23, which consists of two shears that can cut the upper and lower membrane bodies respectively, so that the cut upper and lower membrane bodies can be attached to the liquid inlet pipe respectively.

[0043] As can be seen, a pressing mechanism 24 is also provided behind the scissor mechanism 23. After the scissor mechanism 23 completes the cutting, it pushes backward, and the pressing mechanism 24 moves to the current position of the upper and lower membrane bodies. It can be seen that the pressing mechanism 24 includes an upper adsorption block and a lower adsorption block arranged one above the other. Figure 10 (A schematic diagram of the structure of the upper adsorption block and the lower adsorption block is shown). After the two blocks are moved above and below the upper and lower membrane bodies respectively, the upper and lower membrane bodies are adsorbed into the groove by negative pressure adsorption. Then, the pressing mechanism 24 moves towards the sleeve 324, descending and rising respectively to complete the attachment.

[0044] The inlet pipe loading station 4 includes a vibratory feeder 41, which stores the inlet pipe. The vibratory feeder 41 is connected to a first loading guide rail 42, and the end of the first loading guide rail 42 is connected to a steering box 43. The inlet pipe loading station 4 also includes an ejection mechanism 44, which includes a push rod 45 that can move back and forth. A steering track is provided inside the steering box 43, which is connected to the first loading guide rail 42 and also to a guide pipe 46. The push rod 45 is positioned such that it can push the inlet pipe from the steering track inside the steering box 43 into the guide pipe 46, and continue to move forward until the inlet pipe is fitted onto the sleeve 324.

[0045] The membrane assembly station 3 includes a rotatable and height-adjustable worktable 31. Four assembly mechanisms 32 are arranged in a circular array on the worktable 31, with adjacent assembly mechanisms 32 at 90° intervals. Correspondingly, the initial positions of three of the assembly mechanisms 32 are respectively connected to the welding and mold-closing station 5, the liquid inlet pipe loading station 4 (specifically, the outlet of the guide pipe 46), and the membrane loading station 2 (specifically, behind the scissor mechanism 23). At the fourth assembly mechanism 32, a detection mechanism 33 is provided. This detection mechanism 33 can use sensors to detect the check membrane attached to the liquid inlet pipe, ensuring its complete and proper attachment.

[0046] Specifically, the assembly mechanism 32 includes a mounting base 321, a slide rail 322 on the mounting base 321, a sliding seat 323 on the slide rail 322, the sliding seat 323 can move on the slide rail 322, and the sleeve 324 is installed on the sliding seat 323, and the size of the sleeve 324 is sufficient for the liquid inlet pipe to be fitted on it.

[0047] Therefore, the workflow of this station is as follows: the inlet pipe is pushed out from the guide pipe 46 by the push rod 45 and fitted onto the sleeve 324 of the first assembly mechanism 32. Then, the worktable 31 rotates, and the first assembly mechanism 32 aligns with the membrane feeding station 2, attaching the check valve to the inlet pipe. Simultaneously, the second assembly mechanism 32, located behind the first assembly mechanism 32, completes the feeding of the inlet pipe. Next, the worktable 31 continues to rotate, and the first assembly mechanism 32 aligns with the inspection mechanism 33 for inspection. Simultaneously, the second assembly mechanism 32 attaches the check valve. Then, the worktable 31 continues to rotate, and the first assembly mechanism 32 aligns with the welding and mold-closing station 5 for welding and mold-closing with the bag body. Simultaneously, the second assembly mechanism 32 completes the inspection. After welding and mold-closing are completed, the first assembly mechanism 32 returns to its initial position, which is the position aligned with the guide pipe 46, for the next batch of feeding.

[0048] The part entering the welding mold closing station 5 includes an upper mold plate 51 and a lower mold plate 52. On the middle of both sides of the upper mold plate 51 and the lower mold plate 52, there are respectively a first upper mold hole 53, a first lower mold hole 54, a second upper mold hole 55, and a second lower mold hole 56. The shape formed by the first upper mold hole 53 and the first lower mold hole 54 matches the size of the liquid inlet pipe and the check diaphragm sleeved on the sleeve 324. The shape formed by the second upper mold hole 55 and the second lower mold hole 56 matches the size of the liquid outlet pipe.

[0049] Therefore, the workflow of this station is as follows: After the assembly mechanism 32 completes the inspection, the upper template 51 and lower template 52 open, with the lower bag body positioned on the lower template 52 and the upper bag body on the upper template 51. Then, the worktable 31 rises and rotates, aligning the sleeve 324 with the positions of the first upper mold hole 53 and the first lower mold hole 54. The sliding seat 323 moves, causing the sleeve 324 to extend forward. The worktable 31 then descends, causing the sleeve 324 to fall onto the first lower mold hole 54. Subsequently, the upper template 51 presses down, completing the heat fusion welding. After welding, the sliding seat 323 moves, causing the sleeve 324 to retract backward, and the resulting molded bag body enters the unloading station 7.

[0050] It should be noted that in the above steps, if the workbench 31 does not perform this rising and falling action, it can be clearly seen that the sleeve 324 will collide with the component of the welding mold closing station 5 when it rotates with the workbench 31. If the welding mold closing station 5 is allowed to move aside, the presence of the liquid inlet pipe and liquid outlet pipe, as well as the need to thread wires and film below, will greatly affect the overall space, resulting in an excessively large overall volume. Moreover, if a design of relative movement of the upper and lower mold plates is adopted, its production efficiency is far less than that of the direct pressing of the upper mold plate. This solution has high stability and high production efficiency.

[0051] On the other side, the working principle of the liquid outlet loading station 6 is the same as that of the liquid inlet loading station 4, except that there is no check film attached, and it directly enters the welding and mold closing station 5 to weld the formed bag body.

[0052] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0053] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated welding device for the production of medical liquid bags, characterized in that, The device includes a bag feeding station, a membrane feeding station, a membrane assembly station, an inlet pipe feeding station, a welding and mold closing station, an outlet pipe feeding station, and a discharge station. The bag loading station is used to load the upper and lower bags of the medical liquid bag, and the bag loading station guides the welding and mold closing station; The membrane loading station is used to load the upper and lower membrane bodies of the check valve membrane, and the membrane loading station guides the membrane assembly station; The liquid inlet pipe loading station is used to load the liquid inlet pipe, and the liquid inlet pipe loading station is guided to the membrane assembly station; The liquid outlet pipe loading station is used to load the liquid outlet pipe, and the liquid outlet pipe loading station is guided to the welding mold closing station; The membrane assembly station is used to assemble the check membrane and the inlet pipe, and the membrane assembly station leads to the welding and mold closing station. The welding and molding station is used to weld the assembled inlet pipe, check membrane, upper and lower bag bodies, and outlet pipe of the same batch as a whole to obtain a formed medical liquid bag, which is then guided to the unloading station for unloading.

2. The integrated welding device for producing medical liquid bags according to claim 1, characterized in that, The bag feeding station includes a first feeding roller storing an upper bag in the shape of a roller and a second feeding roller storing a lower bag in the same shape as a roller. The bag feeding station also includes two leveling mechanisms, which respectively flatten the upper bag and the lower bag. The leveling mechanism includes a fixed plate, a leveling plate is provided on the fixed plate, and a limiting plate is provided above the leveling plate. The bag body passes through the leveling plate and the limiting plate. A slider is fixedly connected to the bottom of the flat plate, and a linear guide rail is provided below the flat plate. The slider slides on the linear guide rail, and the direction of the linear guide rail is perpendicular to the feeding direction of the bag.

3. The integrated welding device for producing medical liquid bags according to claim 2, characterized in that, The slider is connected to a handwheel.

4. The integrated welding device for producing medical liquid bags according to claim 1, characterized in that, The film feeding station includes a third feeding roller that stores an upper film in the shape of a roller and a fourth feeding roller that stores a lower film in the same shape as a roller. The film loading station also includes a scissor mechanism, which cuts the upper and lower film bodies during loading.

5. The integrated welding device for producing medical liquid bags according to claim 1, characterized in that, The liquid inlet pipe feeding station includes a vibratory feeder connected to a first feeding guide rail, which is connected to a steering box. The liquid inlet pipe feeding station also includes an ejection mechanism, which includes a push rod that can move back and forth. The steering box has a steering track that is connected to the first feeding guide rail and is also connected to a guide pipe. The push rod can push the liquid inlet pipe into the guide pipe.

6. The integrated welding apparatus for producing medical liquid bags according to any one of claims 1 or 5, characterized in that, The membrane assembly station includes a rotatable worktable with four assembly mechanisms arranged in a circular array on the worktable. The worktable can be raised and lowered simultaneously. Each assembly mechanism includes a mounting base with a slide rail and a sliding seat on the slide rail. The sliding seat can move on the slide rail and a sleeve is fixedly installed on the sliding seat. The liquid inlet pipe can be fitted onto the sleeve. Three of the four assembly mechanisms are initially positioned opposite the membrane feeding station, the liquid inlet pipe feeding station, and the welding and mold closing station, respectively. A detection mechanism is provided at the initial position of the last assembly mechanism. The detection mechanism uses sensors to detect the upper and lower membranes of the check diaphragm attached to the liquid inlet pipe.

7. The integrated welding device for producing medical liquid bags according to claim 6, characterized in that, The welding mold-closing station includes an upper mold plate and a lower mold plate. A first upper mold hole, a first lower mold hole, a second upper mold hole, and a second lower mold hole are respectively provided on the middle of both sides of the upper mold plate and the lower mold plate. The shape formed by the first upper mold hole and the first lower mold hole matches the size of the liquid inlet pipe and the check diaphragm sleeved on the sleeve. The shape formed by the second upper mold hole and the second lower mold hole matches the size of the liquid outlet pipe. Before the sleeve rotates with the worktable to align with the upper and lower mold holes, the worktable first rises, and after rotating into position, the worktable lowers, causing the sleeve to fall onto the lower mold hole.

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