Automatic assembling and membrane drawing equipment for medical hollow fiber membrane filter

Abstract

The utility model relates to automatic assembling and membrane drawing equipment for a medical hollow fiber membrane filter, which is characterized in that hollow frames are fixedly mounted on the surfaces of two ends of the side edge of each fixing plate, clamping arc plates are movably arranged at two ends of the side edge of each hollow frame, and a transmission frame is transversely and fixedly mounted between the outer sides of the two groups of hollow frames; a pushing mechanism is arranged in each hollow frame, a synchronous driving mechanism is arranged in the transmission frame, and the synchronous driving mechanisms are in transmission connection with the pushing mechanisms. It is guaranteed that the clamping arc plates can carry out centering clamping treatment on the filter shell to be assembled and subjected to film drawing treatment, and the situation that due to the fact that the clamping arc plates on the two sides move asynchronously, clamping deviation of the filter shell occurs, and the pulling position of a disengaged pull rod needs to be adjusted subsequently tediously is avoided; and the film drawing treatment efficiency of the protection adhesive tape in the filter shell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an automatic assembly and film drawing device for a medical hollow fiber membrane filter. Background Art

[0002] Medical hollow fiber membrane filters such as hemodialysis dialyzers, filters, and endotoxin filters are the core medical devices for hemodialysis treatment. During their manufacturing process, the hollow fiber membrane needs to be installed in the filter housing, and then the protective membrane of the hollow fiber membrane needs to be pulled out. The membrane ends are then sealed, and sealing glue is injected at both ends to fix the membrane bundle in the filter, sealing the gaps between the bundles and the gaps between the bundles and the filter housing. After the sealing glue solidifies, the redundant and uneven glue surfaces at both ends need to be cut off through a cutting process, and the membrane bundle ports are exposed at the same time. At this time, two independent cavities are formed inside and outside the membrane. During the treatment process, blood flows through the membrane, dialysate flows through the outside of the membrane, and small and medium-sized molecules move across the membrane to exchange and achieve the treatment purpose.

[0003] According to the patent CN112844051A, a medical hollow fiber membrane filter automatic assembly membrane pulling device includes a body, a membrane bundle clamping mechanism, a shell clamping mechanism, and a membrane pulling rod. The membrane bundle clamping mechanism, the shell clamping mechanism and the membrane pulling rod are arranged in a straight line and installed on the body. The shell clamping mechanism is arranged in the middle position. The membrane pulling rod is provided with a displacement mechanism and a rotation mechanism. Its integration level is high. One device can realize a series of action functions such as lifting the membrane bundle, clamping the membrane bundle, supporting the membrane bundle, separating from the rubber, and discarding the rubber. The action logic is simple and the speed is fast. At the same time, the floor space occupied by a single device is reduced, the failure rate is low, and the equipment and site costs of the enterprise are saved. In the process of realizing the utility model, the inventor found that there are at least the following problems in the prior art that have not been solved The problem that the hollow fiber membrane bundle is placed inside the shell and the protective strips on the side ends of the membrane bundle cannot be quickly removed is solved by providing a membrane pulling rod. However, in actual use, when the shell is clamped and fixed by using a clamping mechanism, the shell cannot be clamped in the center, which leads to the need to adjust the position of the membrane pulling rod according to the fixed position of the shell during subsequent assembly of the shell and use of the membrane to ensure that the membrane pulling rod is always in the same horizontal position as the middle of the shell. Once the shell is offset when being clamped, the operator needs to adjust the membrane pulling position in a targeted manner, which not only increases the operating steps required for pulling the filter membrane, but also easily affects the efficiency of the membrane pulling rod in pulling out the protective strips due to improper adjustment. For this reason, a new technical solution needs to be designed to provide a solution. Summary of the Invention

[0004] The purpose of the present utility model is to overcome the deficiencies of the prior art, meet actual needs, and provide an automatic assembly and film-drawing device for a medical hollow fiber membrane filter to solve the current problem that the shell cannot be centrally clamped, which leads to the need to adjust the position of the film-drawing rod according to the fixed position of the shell during subsequent assembly of the shell and use of the film-drawing, so as to ensure that the film-drawing rod is always in the same horizontal position as the middle of the shell. Once the shell is offset when being clamped, the operator is required to make targeted adjustments to the film-drawing position, which not only increases the operating steps required for drawing the filter film, but also easily affects the efficiency of the film-drawing rod in pulling out the protective strip due to improper adjustment.

[0005] In order to achieve the purpose of the utility model, the technical solution adopted by the utility model is as follows: a medical hollow fiber membrane filter automatic assembly film drawing device is designed, comprising a processing table, a film drawing motor is fixedly installed on the side of the top of the processing table, a driving cylinder is connected to the side of the transmission shaft of the film drawing motor, a film drawing rod is provided on the side of the transmission shaft of the driving cylinder, support frames are vertically fixedly installed on the four corner surfaces of the bottom of the processing table, and fixing plates are vertically fixedly installed on the two end surfaces of the top of the processing table away from the film drawing motor;

[0006] A hollow frame is fixedly installed on both ends of the side surface of each fixed plate, and a clamping arc plate is movably provided on both ends of the side of each hollow frame. A transmission frame is fixedly installed laterally between the outer sides of the two groups of hollow frames;

[0007] A pushing mechanism is provided inside each of the hollow frames, and the pushing mechanism is connected to the side of the clamping arc plate through transmission;

[0008] A synchronous driving mechanism is provided inside the transmission frame, and the synchronous driving mechanism is transmission-connected with the pushing mechanism.

[0009] Preferably, the synchronous drive mechanism includes a transmission sprocket, a follower sprocket and a transmission chain. Transmission rods are rotatably installed on both sides of the transmission frame through bearings, and the middle end surface of each transmission rod is fixedly sleeved with a follower sprocket. A rotating rod is rotatably installed on the middle end of the transmission frame through bearings, and the middle end surface of the rotating rod is fixedly sleeved with a transmission sprocket. The inner side of the transmission chain is meshed with the outer sides of the transmission sprocket and the follower sprocket.

[0010] Preferably, the pushing mechanism includes a bidirectional screw and a pushing rod, and a bidirectional screw is rotatably installed on both sides of each hollow frame through bearings, and a transmission sleeve is movably sleeved on the outer end surfaces of each bidirectional screw, and a transmission block is fixedly installed on the outer surface of each transmission sleeve, and the transmission block is slidably inserted into the side of the transmission frame, and a connecting frame is fixedly installed on the outer end surfaces of each transmission block and the clamping arc plate, and the side of the pushing rod is hinged to the outer side of the connecting frame through a rotating shaft.

[0011] Preferably, guide rods are fixedly mounted on both end surfaces of the side edges of each clamping arc plate, guide grooves are provided inside both ends of the side edges of the fixing plate, and the guide rods penetrate and are slidably inserted into the guide grooves.

[0012] Preferably, each of the hollow frame sides has a limiting slot at both ends, and the transmission block is slidably inserted into the limiting slot. A servo motor is fixedly installed on the middle end of the outer side of the transmission frame, and the side of the servo motor transmission shaft is fixedly connected to the outer side of the rotating rod through a coupling.

[0013] Preferably, a mounting plate is fixedly installed on the inner middle surface of each hollow frame, a connecting rod is rotatably installed inside the middle end of each mounting plate through a bearing, and the two side ends of the connecting rod are fixedly connected to the outer side of the bidirectional screw rod.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model is provided with hollow frames on the surfaces of the fixed plates on both sides of the top of the processing table, and a transmission frame is provided on the outside of the hollow frame. Combined with the meshing transmission effect of the transmission chain inside the transmission frame on the transmission sprocket and the follower sprocket, when the servo motor is running and drives the transmission sprocket, it can drive the rotating rods on both sides of the transmission frame to rotate synchronously and in the same direction. Then, under the transmission connection effect of the rotating rod, the two sets of bidirectional screws located inside the hollow frame can be driven to rotate synchronously and in the same direction. Combined with the rotation transmission effect of the bidirectional screw on the transmission sleeve, the transmission sleeves on both sides of the bidirectional screw can be driven to rotate synchronously in the opposite or relative directions. When the lever is moved, the shift pin is moved to the left of the shift pin, and the shift pin is moved to the right of the shift pin, so that the shift pin can be moved to the left of the shift pin, and the shift pin can be moved to the right of the shift pin.

[0016] The utility model provides guide rods at both ends of the side of the clamping arc plate, and the guide rods are slidably inserted into the guide grooves inside the fixed plate. Combined with the guiding sliding action of the guide grooves on the guide rods, when the push rod converts the horizontal movement force of the transmission sleeve into a push-pull force on the clamping arc plate, the clamping arc plate can only move horizontally toward or relative to each other on the top surface of the processing table. It will not move sideways to affect the centering stability of the filter housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the hollow frame and the transmission frame of the present invention from a top view;

[0019] Figure 3 This is a schematic diagram of the side cross-sectional structure of the fixing plate of the present invention;

[0020] Figure 4 This is a schematic diagram of the enlarged structure of part A of the present utility model;

[0021] In the figure: 1, processing table; 11, support frame; 12, film pulling motor; 13, driving cylinder; 14, film pulling rod;

[0022] 2. Fixed plate; 21. Hollow frame; 22. Clamping arc plate; 23. Bidirectional screw; 24. Transmission sleeve; 25. Transmission block; 26. Connecting frame; 27. Push rod; 28. Limiting slide;

[0023] 3. Transmission frame; 31. Rotating rod; 32. Transmission sprocket; 33. Transmission rod; 34. Follower sprocket; 35. Servo motor; 36. Transmission chain;

[0024] 4. Mounting plate; 41. Connecting rod;

[0025] 5. Guide rod; 51. Guide groove. DETAILED DESCRIPTION

[0026] The present invention is further described below with reference to the accompanying drawings and embodiments:

[0027] Example 1: A medical hollow fiber membrane filter automatic assembly and film drawing device, see Figures 1 to 4A film-pulling motor 12 is fixedly installed on the side of the top of the processing table 1, and a driving cylinder 13 is connected to the side of the transmission shaft of the film-pulling motor 12. A film-pulling rod 14 is set on the side of the transmission shaft of the driving cylinder 13. The four corner surfaces of the bottom of the processing table 1 are vertically fixed with support frames 11. The two end surfaces of the top of the processing table 1 away from the film-pulling motor 12 are vertically fixed with fixed plates 2. A hollow frame 21 is fixedly installed on the two end surfaces of the side of each fixed plate 2. A clamping arc plate 22 is movably set at both ends of the side of each hollow frame 21. A transmission frame 3 is fixedly installed horizontally between the outer sides of the two groups of hollow frames 21. A pushing mechanism is set inside each hollow frame 21, and the pushing mechanism and the clamping arc plate 22 are driven on the side. The transmission frame 3 is connected to each other, and a synchronous driving mechanism is provided inside the transmission frame 3, and the synchronous driving mechanism and the pushing mechanism are connected by transmission. Through the transmission connection between the pushing mechanism and the livestock arc plate, and under the synchronous driving action of the synchronous driving mechanism on the two groups of pushing mechanisms, the multiple groups of clamping arc plates 22 located on both sides of the top of the processing table 1 can be synchronously adjusted in a direction or relative to each other to ensure that the clamping arc plates 22 can perform a center clamping process on the filter housing to be assembled for film drawing treatment, avoiding the asynchronous movement of the clamping arc plates 22 on both sides, resulting in a clamping offset of the filter housing and the need for subsequent cumbersome adjustment of the pulling position of the disengagement rod, thereby improving the film drawing processing efficiency of the protective rubber strip inside the filter housing.

[0028] For details, see Figures 1 to 4 The synchronous drive mechanism includes a transmission sprocket 32, a follower sprocket 34 and a transmission chain 36. Transmission rods 33 are rotatably installed on both sides of the transmission frame 3 through bearings. The middle end surface of each transmission rod 33 is fixedly sleeved with a follower sprocket 34. A rotating rod 31 is rotatably installed on the middle end of the transmission frame 3 through bearings. The middle end surface of the rotating rod 31 is fixedly sleeved with a transmission sprocket 32. The inner side of the transmission chain 36 is meshed with the outer side of the transmission sprocket 32 ​​and the follower sprocket 34. Through the transmission chain 36, the transmission sprocket 32 ​​and the follower sprocket 34 are meshed and transmitted, which can drive the two sets of bidirectional screw rods 23 located inside the hollow frame 21 to rotate synchronously and in the same direction.

[0029] For further information, see Figures 1 to 4The pushing mechanism includes a bidirectional screw rod 23 and a pushing rod 27. A bidirectional screw rod 23 is rotatably installed on both sides of each hollow frame 21 through bearings. A transmission sleeve 24 is movably sleeved on the outer end surfaces of each bidirectional screw rod 23. A transmission block 25 is fixedly installed on the outer surface of each transmission sleeve 24, and the transmission block 25 is slidably inserted into the side of the transmission frame 3. A connecting frame 26 is fixedly installed on the outer end surfaces of each transmission block 25 and the clamping arc plate 22, and the side of the pushing rod 27 is hinged to the outer side of the connecting frame 26 through a rotating shaft. Under the rotation transmission action of the bidirectional screw rod 23 on the transmission sleeve 24, the transmission sleeve 24 can move horizontally toward or relative to each other inside the hollow frame 21 when it rotates, thereby providing the power required for the horizontal movement of the clamping arc plate 22.

[0030] It is worth noting that, see Figures 1 to 4 A guide rod 5 is fixedly installed on the surface of both ends of the side of each clamping arc plate 22, and a guide groove 51 is opened inside the both ends of the side of the fixed plate 2, and the guide rod 5 is inserted into the guide groove 51. Under the guiding sliding action of the guide groove 51 on the guide rod 5, when the push rod 27 provides the corresponding pushing force to the clamping arc plate 22, the clamping arc plate 22 can only move horizontally and will not move laterally.

[0031] It is worth noting that see Figures 1 to 4 , each hollow frame 21 has a limited slot 28 at both ends of the side, and the transmission block 25 is slidably inserted into the limited slot 28. A servo motor 35 is fixedly installed at the middle end of the outer side of the transmission frame 3, and the side of the servo motor 35 transmission shaft is fixedly connected to the outer side of the rotating rod 31 through a coupling. The structural function of the servo motor 35 can provide the power required for position adjustment of the clamping arc plate 22, and under the guided sliding action of the limited slot 28, it can ensure that when the bidirectional screw 23 rotates, the transmission sleeve 24 can only move horizontally inside the hollow frame 21 without axial rotation.

[0032] It is worth mentioning that see Figures 1 to 4 A mounting plate 4 is fixedly installed on the inner middle surface of each hollow frame 21, and a connecting rod 41 is rotatably installed inside the middle end of each mounting plate 4 through a bearing, and the two ends of the side of the connecting rod 41 are fixedly connected to the outer side of the bidirectional screw rod 23. The two sets of bidirectional screw rods 23 are connected in transmission through the connecting rod 41, thereby ensuring that the transmission rod 33 can synchronously drive the bidirectional screw rod 23 to rotate.

[0033] During operation, after the filter housing to be assembled is placed between the side edges of the clamping arc plate 22, the servo motor 35 is turned on through an external control switch to drive the rotating rod 31 and the transmission sprocket 32 ​​to rotate synchronously inside the transmission frame 3. Combined with the meshing transmission action of the transmission chain 36 on the transmission sprocket 32 ​​and the follower sprocket 34, the transmission rods 33 on both sides of the transmission frame 3 can be driven to rotate synchronously and in the same direction. Combined with the rotation connection action of the transmission rod 33 on the bidirectional screw rod 23, and the transmission connection action of the connecting rod 41 on the two groups of bidirectional screw rods 23, the bidirectional screw rods 23 on both sides of the two groups of transmission frames 3 can be rotated synchronously and in the same direction. Then, under the guiding and limiting action of the limiting slide 28 on the transmission block 25, the transmission sleeve 24 sleeved on both sides of the outside of the bidirectional screw rod 23 can be synchronized. The two guide rods 51 and 52 are connected to each other by a screw thread, and the guide rods 51 and 53 are connected to each other by a screw thread, so that the guide rods 51 and 53 can be connected to each other by a screw thread, so that the guide rods 51 and 53 can be connected to each other by a screw thread, so that the guide rods 51 and 53 can be connected to each other by a screw thread, so that the guide rods 51 and 53 can be connected to each other by a screw thread, so that the guide rods 51 and 53 can be connected to each other by a screw thread, so that the guide rods 51 and 53 can be connected to each other by a screw thread,

[0034] In addition, the components designed in this utility model are all universal standard parts or components known to technical personnel in this field. Their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be fully implemented by technical personnel in this field. Needless to say, the content protected by this utility model does not involve improvements to internal structures and methods.

[0035] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A medical hollow fiber membrane filter automatic assembly and film drawing device, comprising a processing table (1), a film drawing motor (12) fixedly mounted on the top side of the processing table (1), a driving cylinder (13) connected to the side of the transmission shaft of the film drawing motor (12), and a film drawing rod (14) provided on the side of the transmission shaft of the driving cylinder (13), characterized in that: Support frames (11) are vertically fixedly mounted on the four corner surfaces of the bottom of the processing table (1), and fixed plates (2) are vertically fixedly mounted on the two end surfaces of the top of the processing table (1) away from the film-pulling motor (12); A hollow frame (21) is fixedly mounted on both ends of the side surface of each fixed plate (2), a clamping arc plate (22) is movably provided on both ends of the side surface of each hollow frame (21), and a transmission frame (3) is fixedly mounted laterally between the outer sides of the two groups of hollow frames (21); A pushing mechanism is provided inside each of the hollow frames (21), and the pushing mechanism is connected to the side of the clamping arc plate (22) by transmission; A synchronous drive mechanism is provided inside the transmission frame (3), and the synchronous drive mechanism and the pushing mechanism are transmission-connected.

2. The automatic assembly and film drawing device for medical hollow fiber membrane filters according to claim 1, characterized in that: The synchronous drive mechanism comprises a transmission sprocket (32), a follower sprocket (34) and a transmission chain (36); transmission rods (33) are rotatably mounted on both sides of the transmission frame (3) via bearings; a follower sprocket (34) is fixedly sleeved on the middle end surface of each transmission rod (33); a rotating rod (31) is rotatably mounted on the middle end of the transmission frame (3) via bearings; a transmission sprocket (32) is fixedly sleeved on the middle end surface of the rotating rod (31); and the inner side of the transmission chain (36) is meshed and sleeved with the outer sides of the transmission sprocket (32) and the follower sprocket (34).

3. The automatic assembly and film drawing equipment for medical hollow fiber membrane filters according to claim 1, characterized in that: The pushing mechanism includes a bidirectional screw rod (23) and a pushing rod (27), and the bidirectional screw rod (23) is rotatably mounted on both sides of the interior of each hollow frame (21) through bearings, and the outer end surfaces of each bidirectional screw rod (23) are movably sleeved with a transmission sleeve (24), and the outer surface of each transmission sleeve (24) is fixedly mounted with a transmission block (25), and the transmission block (25) is slidably inserted into the inner side of the transmission frame (3), and the outer end surfaces of each transmission block (25) and the clamping arc plate (22) are fixedly mounted with a connecting frame (26), and the side of the pushing rod (27) is hinged to the outer side of the connecting frame (26) through a rotating shaft.

4. The automatic assembly and film drawing device for medical hollow fiber membrane filters according to claim 1, characterized in that: A guide rod (5) is fixedly mounted on both ends of the side surface of each clamping arc plate (22), a guide groove (51) is provided inside both ends of the side of the fixing plate (2), and the guide rod (5) penetrates and is slidably inserted into the guide groove (51).

5. The automatic assembly and film drawing equipment for medical hollow fiber membrane filters according to claim 1, characterized in that: A limiting slide groove (28) is provided inside both ends of the side of each hollow frame (21), and the transmission block (25) is inserted into the limiting slide groove (28) by sliding. A servo motor (35) is fixedly installed at the middle end of the outer side of the transmission frame (3), and the side of the transmission shaft of the servo motor (35) is fixedly connected to the outer side of the rotating rod (31) through a coupling.

6. The automatic assembly and film drawing device for medical hollow fiber membrane filters according to claim 1, characterized in that: A mounting plate (4) is fixedly mounted on the inner middle surface of each hollow frame (21), and a connecting rod (41) is rotatably mounted inside the middle of each mounting plate (4) through a bearing, and both ends of the side of the connecting rod (41) are fixedly connected to the outer side of the bidirectional screw rod (23).

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