Welding equipment for charging opening of medical liquid bag

By designing an automated welding device for the filling port of medical liquid bags, which utilizes cylinder-driven grippers and conveying components to achieve automatic welding of the liquid bag opening, the problems of operator injury and low efficiency caused by high-temperature welding are solved, and the welding quality and efficiency are improved.

CN223791118UActive Publication Date: 2026-01-13SUZHOU JIAERQIANG AUTOMATION EQUIPMENT CO LTD
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Patent Information

Application Number
CN202520286295.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-02-21
Publication Date
2026-01-13
Estimated Expiration
2035-02-21

AI Technical Summary

Technical Problem

Existing welding devices for medical fluid bag filling ports cause operator injuries due to excessively high temperatures and have low welding efficiency, failing to meet the needs of medical teams.

Method used

A welding device for the feeding port of a medical liquid bag was designed, comprising an operating table, a fixed groove, a column, welding components, grippers, and a conveying component. The device achieves automated welding through a cylinder-driven gripper and conveying system, reducing manual operation and improving welding efficiency.

Benefits of technology

It enables safe and efficient welding of liquid bag openings, reducing the workload of operators and improving welding quality and efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of medical liquid bag feeding port welding, and discloses medical liquid bag feeding port welding equipment which comprises an operation table and two fixing grooves formed in the operation table, two stand columns are fixedly installed on the operation table, firstly, a liquid bag is stuffed into a sleeve, a third telescopic air cylinder is started, and a second telescopic air cylinder is started; under the cooperation of a third telescopic air cylinder, a mounting block, a pushing block, a fourth sliding rail, a rack plate, a gear, a second two-way lead screw and an arc-shaped clamp, a liquid bag opening is clamped, the situation that the liquid bag opening shakes back and forth during welding, and consequently the welding quality does not meet the requirement is avoided, then a first telescopic air cylinder and a second telescopic air cylinder are started, and welding is completed. The telescopic end of the first telescopic air cylinder drives the supporting block to slide on the first sliding rail so as to drive the upper welding clamping jaw to move downwards, the telescopic end of the second telescopic air cylinder drives the force transmission block to slide on the second sliding rail so as to drive the lower welding clamping jaw to move upwards, and then the welding assembly welds the medical liquid bag feeding opening.
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Description

Technical Field

[0001] This utility model relates to the field of welding technology for the filling port of medical liquid bags, specifically a welding device for the filling port of medical liquid bags. Background Technology

[0002] Medical fluid bags are medical devices or pharmaceutical packaging bags, generally made of polymer materials, used for storing or storing intravenous medications or nutritional solutions, and connected to infusion sets and intravenous devices (such as central venous catheters) for administration into the body. They have a wide range of applications, including but not limited to various types and styles of drainage bags, feeding bags, infusion bags, and nutritional storage bags.

[0003] Existing welding devices for medical fluid bag filling ports all involve a person placing the medical fluid bag at the welding port for welding. Because the welding temperature is too high, it is easy to injure the operator, and the welding efficiency is low, which cannot meet the needs of medical teams.

[0004] Therefore, we propose a welding device for the filling port of a medical liquid bag to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a welding device for the filling port of a medical liquid bag, in order to solve the problem that, as mentioned in the background art, the medical liquid bag is placed at the welding port for welding, which can easily injure the operator due to the excessively high welding temperature, and the welding efficiency is low, failing to meet the needs of medical teams.

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes an operating table and two fixed slots on the operating table. Two columns are fixedly installed on the operating table, and a fixed plate is fixedly installed on the side wall of one of the columns. Two diagonal braces are fixedly installed on both the column and the operating table. A welding assembly for welding the liquid bag opening is provided on the side wall of the column. The welding assembly includes a limiting plate fixedly installed on the side wall of the column. Two first slide rails are fixedly installed on the limiting plate. A support plate is fixedly installed on the side wall of the limiting plate. A first telescopic cylinder is fixedly installed on the support plate. A support block is fixedly installed at the telescopic end of the first telescopic cylinder. The support block is slidably installed on the first slide rail. An upper welding gripper is fixedly installed at the lower end of the support block.

[0007] Preferably, a U-shaped plate is fixedly installed at the lower end of the operating table, a second telescopic cylinder is fixedly installed at the lower end of the U-shaped plate, a force transmission block is fixedly installed at the telescopic end of the second telescopic cylinder, second slide rails are fixedly installed on both sides of the U-shaped plate, a lower welded gripper is fixedly installed at the upper end of the force transmission block, and a conveying assembly is provided on the operating table.

[0008] Preferably, the conveying assembly includes two fixed blocks fixedly mounted on the operating table, a first bidirectional lead screw rotatably mounted between the two fixed blocks, two limiting discs fixedly mounted on the axial sidewall of the first bidirectional lead screw, a rocker arm fixedly mounted at one end of the first bidirectional lead screw, two third slide rails fixedly mounted on the operating table, a connecting plate threadedly connected to the axial sidewall of the first bidirectional lead screw, and a displacement assembly provided on the connecting plate.

[0009] Preferably, the displacement assembly includes a third telescopic cylinder fixedly mounted on a connecting plate, two fourth slide rails fixedly mounted on the upper end of the connecting plate, two support rods fixedly mounted on both ends of the connecting plate, a baffle fixedly mounted between the two support rods, a pushing block slidably mounted on the two fourth slide rails, an installation block fixedly mounted on the telescopic end of the third telescopic cylinder, the installation block and the pushing block being fixedly connected, a placement platform fixedly mounted on the two support rods, an installation groove provided on the baffle, a sleeve fixedly mounted on the pushing block, and a clamping assembly for clamping the liquid bag opening provided on the pushing block.

[0010] Preferably, the clamping assembly includes a rack plate fixedly mounted on the push block, two limiting blocks fixedly mounted on the baffle, a second bidirectional lead screw rotatably mounted between the two limiting blocks, a gear fixedly mounted on the axial side wall of the second bidirectional lead screw, and two arc-shaped clamps threadedly connected to the axial side wall of the second bidirectional lead screw.

[0011] Preferably, the dimensions of the arc-shaped clamp match the dimensions of the sleeve.

[0012] Preferably, the sleeve is located at the middle of the upper welding jaw and the lower welding jaw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. First, insert the liquid bag into the sleeve. Activate the third telescopic cylinder. With the cooperation of the third telescopic cylinder, mounting block, pushing block, fourth slide rail, rack plate, gear, second double-acting screw, and arc-shaped clamp, the liquid bag opening is clamped to prevent it from shaking back and forth during welding, which would result in substandard welding quality. Then, activate the first and second telescopic cylinders. The telescopic end of the first telescopic cylinder drives the support block to slide on the first slide rail, thereby moving the upper welding jaw downwards. The telescopic end of the second telescopic cylinder drives the force transmission block to slide on the second slide rail, thereby moving the lower welding jaw upwards. Then, the welding assembly welds the medical liquid bag filling port.

[0015] 2. Shake the rocker arm. With the cooperation of the first double-acting screw, the connecting plate, and the third slide rail, the connecting plate slides on the third slide rail, moving the middle placement platform to the upper welding claw. At this time, the liquid bag welded on the left connecting plate can be removed, and a new liquid bag to be packaged can be placed on it. The liquid bags on the middle placement platform can be welded first, and then the liquid bags on the left placement platform can be welded. This can greatly improve work efficiency and reduce the workload of operators. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This is a three-dimensional structural diagram of the welding assembly of this utility model;

[0018] Figure 3 This is a three-dimensional structural diagram of the transmission component of this utility model;

[0019] Figure 4 This is a three-dimensional structural diagram of the displacement component of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the clamping component of this utility model.

[0021] In the diagram: 1. Operating table; 11. Fixing groove; 12. Column; 13. Fixing plate; 14. Diagonal brace; 2. Welding assembly; 21. Limiting plate; 22. First slide rail; 23. Support plate; 24. First telescopic cylinder; 25. Support block; 26. Upper welding gripper; 27. U-shaped plate; 28. Second telescopic cylinder; 29. ​​Force transmission block; 201. Lower welding gripper; 202. Second slide rail; 3. Conveying assembly; 31. Fixing block; 32. ... 33. Double-acting lead screw; 34. Limiting disc; 35. Rocker arm; 36. Third slide rail; 47. Connecting plate; 48. Displacement assembly; 49. Third telescopic cylinder; 40. Mounting block; 41. Fourth slide rail; 42. Support rod; 43. Baffle; 44. Push block; 45. Sleeve; 46. Mounting groove; 47. Placement platform; 58. Clamping assembly; 59. Rack plate; 50. Limiting block; 51. Second double-acting lead screw; 52. Gear; 53. Arc-shaped clamp. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1: Please refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 The system includes an operating table 1 and two fixed slots 11 on the operating table 1. Two columns 12 are fixedly installed on the operating table 1. A fixed plate 13 is fixedly installed on the side wall of one of the columns 12. Two diagonal braces 14 are fixedly installed on the column 12 and the operating table 1. A welding assembly 2 for welding the liquid bag opening is provided on the side wall of the column 12. The welding assembly 2 includes a limiting plate 21 fixedly installed on the side wall of the column 12. Two first slide rails 22 are fixedly installed on the limiting plate 21. A support plate 23 is fixedly installed on the side wall of the limiting plate 21. A first telescopic cylinder 24 is fixedly installed on the support plate 23. A support block 25 is fixedly installed at the telescopic end of the first telescopic cylinder 24. The support block 25 is slidably installed on the first slide rail 22. An upper welding claw 26 is fixedly installed at the lower end of the support block 25.

[0024] A U-shaped plate 27 is fixedly installed at the lower end of the operating table 1. A second telescopic cylinder 28 is fixedly installed at the lower end of the U-shaped plate 27. A force transmission block 29 is fixedly installed at the telescopic end of the second telescopic cylinder 28. A second slide rail 202 is fixedly installed on both sides of the U-shaped plate 27. A lower welding gripper 201 is fixedly installed at the upper end of the force transmission block 29. A conveying assembly 3 is provided on the operating table 1.

[0025] The displacement assembly 4 includes a third telescopic cylinder 41 fixedly mounted on a connecting plate 36. Two fourth slide rails 43 are fixedly mounted on the upper end of the connecting plate 36. Two support rods 44 are fixedly mounted on both ends of the connecting plate 36. A baffle 45 is fixedly mounted between the two support rods 44. A push block 46 is slidably mounted on the two fourth slide rails 43. An installation block 42 is fixedly mounted on the telescopic end of the third telescopic cylinder 41. The installation block 42 and the push block 46 are fixedly connected. A placement platform 49 is fixedly mounted on the two support rods 44. An installation groove 48 is provided on the baffle 45. A sleeve 47 is fixedly mounted on the push block 46. A clamping assembly 5 for clamping the liquid bag opening is provided on the push block 46.

[0026] The clamping assembly 5 includes a rack plate 51 fixedly mounted on the push block 46, two limit blocks 52 fixedly mounted on the baffle 45, a second bidirectional lead screw 53 rotatably mounted between the two limit blocks 52, a gear 54 fixedly mounted on the axial side wall of the second bidirectional lead screw 53, the gear 54 being located on the unthreaded section of the second bidirectional lead screw 53, and two arc-shaped clamps 55 threadedly connected to the axial side wall of the second bidirectional lead screw 53.

[0027] The size of the arc-shaped clamp 55 matches the size of the sleeve 47, and the arc-shaped clamp 55 can clamp the opening of the liquid bag fitted on the sleeve 47.

[0028] The sleeve 47 is located at the middle of the upper welding jaw 26 and the lower welding jaw 201. The upper welding jaw 26 and the lower welding jaw 201 can weld the liquid bag opening that is sleeved on the sleeve 47.

[0029] In this embodiment: First, the liquid bag is placed on the placement platform 49, and the feeding port is inserted into the sleeve 47. Then, the third telescopic cylinder 41 is activated, causing the telescopic end of the third telescopic cylinder 41 to drive the mounting block 42 and the pushing block 46 to slide forward on the fourth slide rail 43, thereby moving the sleeve 47 to the lower end of the upper welding jaw 26. At this time, the rack plate 51 is driven to move forward. Because the rack plate 51 and the gear 54 are meshed, the gear 54 is driven to rotate, thereby driving the second bidirectional lead screw 53 to rotate, causing the two arc-shaped clamps 55 to move upward onto the sleeve 47. Finally, the opening of the liquid bag is clamped to prevent it from shaking back and forth during welding, which would result in substandard welding quality. Then, the first telescopic cylinder 24 and the second telescopic cylinder 28 are activated. The telescopic end of the first telescopic cylinder 24 drives the support block 25 to slide on the first slide rail 22, thereby causing the upper welding gripper 26 to move downward. The telescopic end of the second telescopic cylinder 28 drives the force transmission block 29 to slide on the second slide rail 202, thereby causing the lower welding gripper 201 to move upward. Then, the welding assembly 2 welds the medical liquid bag filling port.

[0030] Example 2: This example is an improvement on Example 1. For details, please refer to [link / reference]. Figure 3 The transmission assembly 3 includes two fixed blocks 31 fixedly installed on the operating table 1. A first bidirectional lead screw 32 is rotatably installed between the two fixed blocks 31. Two limiting discs 33 are fixedly installed on the axial side wall of the first bidirectional lead screw 32. A rocker arm 34 is fixedly installed at one end of the first bidirectional lead screw 32. Two third slide rails 35 are fixedly installed on the operating table 1. A connecting plate 36 is threadedly connected to the axial side wall of the first bidirectional lead screw 32. A displacement assembly 4 is provided on the connecting plate 36.

[0031] In this embodiment: the rocker arm 34 is rocked to make the first bidirectional lead screw 32 start to rotate. Since the connecting plate 36 and the third slide rail 35 are slidably connected, the connecting plate 36 can only produce sliding displacement and not rotational displacement, so that the connecting plate 36 slides on the third slide rail 35, and the middle placement platform 49 moves to the upper welding claw 26. At this time, the liquid bag welded on the left connecting plate 36 can be removed and a new liquid bag to be packaged can be placed on it. The liquid bag on the middle placement platform 49 can be welded first, and then the liquid bag on the left placement platform 49 can be replaced for welding, which can greatly improve work efficiency and reduce the workload of operators.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] 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. A welding device for the feeding port of a medical liquid bag, comprising an operating table (1) and two fixing slots (11) formed on the operating table (1), wherein two columns (12) are fixedly installed on the operating table (1), and a fixing plate (13) is fixedly installed on the side wall of one of the columns (12), and two diagonal braces (14) are fixedly installed together on the column (12) and the operating table (1), characterized in that: The side wall of the column (12) is provided with a welding assembly (2) for welding the liquid bag opening. The welding assembly (2) includes a limiting plate (21) fixedly installed on the side wall of the column (12). Two first slide rails (22) are fixedly installed on the limiting plate (21). A support plate (23) is fixedly installed on the side wall of the limiting plate (21). A first telescopic cylinder (24) is fixedly installed on the support plate (23). A support block (25) is fixedly installed at the telescopic end of the first telescopic cylinder (24). The support block (25) is slidably installed on the first slide rail (22). An upper welding claw (26) is fixedly installed at the lower end of the support block (25).

2. The welding equipment for the feeding port of a medical liquid bag according to claim 1, characterized in that: A U-shaped plate (27) is fixedly installed at the lower end of the operating table (1). A second telescopic cylinder (28) is fixedly installed at the lower end of the U-shaped plate (27). A force transmission block (29) is fixedly installed at the telescopic end of the second telescopic cylinder (28). A second slide rail (202) is fixedly installed on both sides of the U-shaped plate (27). A lower welding gripper (201) is fixedly installed at the upper end of the force transmission block (29). A conveying assembly (3) is provided on the operating table (1).

3. The welding equipment for the feeding port of a medical liquid bag according to claim 2, characterized in that: The transmission assembly (3) includes two fixed blocks (31) fixedly installed on the operating table (1). A first bidirectional lead screw (32) is rotatably installed between the two fixed blocks (31). Two limiting discs (33) are fixedly installed on the axial sidewall of the first bidirectional lead screw (32). A rocker arm (34) is fixedly installed at one end of the first bidirectional lead screw (32). Two third slide rails (35) are fixedly installed on the operating table (1). A connecting plate (36) is threadedly connected to the axial sidewall of the first bidirectional lead screw (32). A displacement assembly (4) is provided on the connecting plate (36).

4. The welding equipment for the feeding port of a medical liquid bag according to claim 3, characterized in that: The displacement assembly (4) includes a third telescopic cylinder (41) fixedly installed on a connecting plate (36). Two fourth slide rails (43) are fixedly installed on the upper end of the connecting plate (36). Two support rods (44) are fixedly installed on both ends of the connecting plate (36). A baffle (45) is fixedly installed between the two support rods (44). A push block (46) is slidably installed on the two fourth slide rails (43). An installation block (42) is fixedly installed on the telescopic end of the third telescopic cylinder (41). The installation block (42) and the push block (46) are fixedly connected. A placement platform (49) is fixedly installed on the two support rods (44). An installation groove (48) is provided on the baffle (45). A sleeve (47) is fixedly installed on the push block (46). A clamping assembly (5) for clamping the liquid bag opening is provided on the push block (46).

5. The welding equipment for the feeding port of a medical liquid bag according to claim 4, characterized in that: The clamping assembly (5) includes a rack plate (51) fixedly mounted on the push block (46), two limiting blocks (52) fixedly mounted on the baffle (45), a second bidirectional lead screw (53) rotatably mounted between the two limiting blocks (52), a gear (54) fixedly mounted on the axial side wall of the second bidirectional lead screw (53), and two arc-shaped clamps (55) threadedly connected to the axial side wall of the second bidirectional lead screw (53).

6. The welding equipment for the feeding port of a medical liquid bag according to claim 5, characterized in that: The dimensions of the arc-shaped clamp (55) and the sleeve (47) are matched.

7. The welding equipment for the feeding port of a medical liquid bag according to claim 5, characterized in that: The sleeve (47) is located at the middle of the upper welding jaw (26) and the lower welding jaw (201).