Rotary friction welding device for hemoperfusion device shell

Abstract

The utility model relates to the technical field of hemoperfusion device processing, and discloses a hemoperfusion device shell rotating friction welding device which comprises a welding box, a welding assembly is arranged in the welding box, the welding assembly comprises a lifting plate arranged in the welding box, a servo motor is fixed to the top face of the lifting plate, and the servo motor is connected with the welding box. An output shaft of the servo motor extends to the bottom face of the lifting plate, and a pressure sensor is fixed to the output shaft end of the servo motor. The servo motor is arranged to drive the shell end cover and the perfusion device end cover to rapidly rotate on the top face of the perfusion device middle cylinder, so that the end covers and the middle cylinder generate heat through friction, pp materials at the welding position are melted, then the rotating head stops rotation of the end covers, downward pressure is applied to the end covers for 1-3 s, and then the perfusion device is started. The end cover and the middle cylinder of the molten PP curing shell are firmly welded together, the welded end cover and the middle cylinder are stably connected, and the possibility that the perfusion device is loosened after sterilization is finished due to the physical property influence of thermal expansion and cold contraction is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to blood perfusion ware processing technical field especially relates to a blood perfusion ware shell rotary friction welding device. BACKGROUND

[0002] Blood perfusion ware is used for acute and chronic drug poisoning, uremia molecular toxin adsorption machine blood perfusion ware is a kind of medical instrument, it is mainly used for blood purification treatment, it is through extracorporeal circulation, utilizes adsorption and removes toxic substances in blood, is a kind of blood purification, blood perfusion ware shell sealing is mostly kept sealing performance by thread tightening fixed, and a small part is kept sealing by ultrasonic welding fixed.

[0003] Drawbacks of prior art;

[0004] First, thread tightening fixed, since blood perfusion ware mostly adopts moist heat sterilization, must pass through the process of normal temperature, high temperature, normal temperature, the physical property of shell is influenced by thermal expansion and cold shrink in this process, there is the possibility of thread loosening after sterilization, and even possibly lead to unqualified sterile test results;

[0005] Second, ultrasonic welding effect is better, but most of the perfusion ware needs to be filled with adsorbent before sealing welding, if the welding is influenced by ultrasonic oscillation at this time, the adsorbent has the possibility of breaking or generating particles, there is the possibility of leading to unqualified product particle detection results, therefore, ultrasonic welding machine is only applicable to the process of welding first and filling adsorbent later, and the application range is limited. INVENTION CONTENTS

[0006] The utility model aims at solving the drawbacks in prior art and provides a blood perfusion ware shell rotary friction welding device.

[0007] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A blood perfusion ware shell rotary friction welding device, comprising a welding box, a welding assembly is arranged in the welding box, the welding assembly comprises a lifting plate arranged in the welding box, a servo motor is fixed on the top surface of the lifting plate, the output shaft of the servo motor extends to the bottom surface of the lifting plate, a pressure sensor is fixed on the output shaft end of the servo motor, a shell end cover is connected to the detection end of the pressure sensor, a servo cylinder is also fixed on the top surface in the welding box, and the extension end of the servo cylinder is fixed on the top surface of the servo motor.

[0009] As a further scheme of the present utility model, the inside bottom surface of the welding box is fixed with a mounting plate, the top surface of the mounting plate is fixed with a support plate and a fixed clamping plate respectively near the left and right sides, the side of the support plate near the fixed clamping plate is provided with a movable clamping plate, and the side of the support plate away from the movable clamping plate is fixed with a clamping cylinder.

[0010] As a further scheme of the present utility model, the inside of the welding box is fixed with an electronic ruler, and the brush head of the electronic ruler is fixed with the top surface of the lifting plate.

[0011] As a further scheme of the present utility model, the inside of the welding box is fixed with four first support rods, the lifting plate and the outer wall of the first support rod are slidingly arranged, the left side of the support plate is slidingly provided with two second support rods, and the right end of the second support rod is fixed with the left side of the movable clamping plate.

[0012] As a further scheme of the present utility model, the inside of the welding box is fixed with a control box near the top surface, the front side of the control box is provided with a touch screen, the servo motor, the pressure sensor, the servo cylinder, the clamping cylinder, the electronic ruler and the touch screen are electrically connected with the control box, the front side of the welding box is fixed with three driving buttons and a reset button respectively, and the driving buttons and the reset button are electrically connected with the control box.

[0013] As a further scheme of the present utility model, the bottom surface of the welding box is fixed with a storage cabinet, and the front side of the storage cabinet is connected with two cabinet doors through hinges.

[0014] Compared with the prior art, the present utility model has the following beneficial effects:

[0015] By setting the servo motor to drive the shell end cover and the perfuser end cover to rotate rapidly on the top surface of the perfuser barrel, heat is generated by the friction between the end cover and the barrel, the pp material at the welding position is melted, then the rotation of the end cover is stopped, and a downward pressure is applied to the end cover for 1-3s, so that the molten pp solidifies the end cover and the barrel of the shell are firmly welded together, the connection between the end cover and the barrel after welding is stable, and the physical properties of thermal expansion and cold contraction will not affect the possibility of loosening after the perfusion is sterilized, and the rotating welding mode ensures that the adsorbent of the perfusion is not damaged, and ensures that the shell sealing performance and the product sterility meet the requirements. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A three-dimensional structure schematic view of a blood perfusion device shell rotating friction welding device is provided for the present utility model;

[0017] Figure 2 A welding box three-dimensional sectional structure schematic view of a blood perfusion device shell rotating friction welding device is provided for the present utility model;

[0018] Figure 3 A kind of blood perfusion ware shell rotating friction welding device's mounting plate place stereoscopic structure schematic view is proposed in the utility model;

[0019] Figure 4 A kind of blood perfusion ware shell rotating friction welding device's lifting plate place stereoscopic structure schematic view is proposed in the utility model.

[0020] In the drawing: 1, welding box;2, lifting plate;201, servo motor;202, pressure sensor;203, shell end cover;204, servo cylinder;3, mounting plate;301, support plate;302, fixed clamping plate;303, movable clamping plate;304, clamping cylinder;4, electronic ruler;5, first support rod;501, second support rod;6, control box;601, touch screen;602, drive button;603, reset button;7, storage cabinet. DETAILED DESCRIPTION

[0021] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0022] In the description of the utility model, it should be explained that the orientation or position relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "another end" and the like is the orientation or position relationship shown based on the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance.

[0023] In the description of the utility model, it should be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be broadly understood, for example, "connection" can be fixed connection, can also be detachable connection, or integrally connected;Can be mechanical connection, can also be electrical connection;Can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0024] As Figures 1-4As shown, a blood perfusion device shell rotary friction welding device, including a welding box 1, the inside of the welding box 1 is provided with a welding assembly, the welding assembly includes a lifting plate 2 arranged in the inside of the welding box 1, the top surface of the lifting plate 2 is fixed with a servo motor 201, the output shaft of the servo motor 201 extends to the bottom surface of the lifting plate 2, the output shaft end of the servo motor 201 is fixed with a pressure sensor 202, the detection end of the pressure sensor 202 is connected with a shell end cover 203, the inside top surface of the welding box 1 is also fixed with a servo cylinder 204, the extension end of the servo cylinder 204 is fixed with the top surface of the servo motor 201, the lifting plate 2 and the shell end cover 203 are driven to press down at a faster speed by starting the servo cylinder 204, the speed is faster, which can save working time and improve work efficiency, when reaching the welding position, the end cover is sleeved in the inside of the shell end cover 203, at this time the end cover is not stressed, at this time the moving speed of the shell end cover 203 changes from the falling speed to the pre-pressing speed, the pre-pressing speed is slow, which will not cause the deformation of the part due to the too large pressure value of the stress moment of the end cover, after the pressure sensor 202 senses the pressure of the end cover to reach the set value, the rotating head stops pressing down, according to the set starting, the shell end cover 203 and the end cover are driven to rotate at a high speed by the servo motor 201, at the same time, the end cover is driven to move downward at a very slow welding speed by the servo cylinder 204, so as to reach the complete sealing welding effect with the smallest welding depth, the end cover stops rotating after reaching the predetermined rotating time, the servo cylinder 204 presses down again according to the solidification setting value, and keeps pressing tightly according to the solidification time after reaching the solidification position, so that the molten pp is in close contact and solidification, after the solidification time ends, the shell end cover 203 is driven to separate from the end cover and rise up, the brush head of the electronic ruler 4 is synchronous with the lifting plate 2 in the whole welding process, and the actual welding depth is recorded, the welding is finished, the end cover is connected with the middle cylinder stably after welding, which will not be affected by the physical properties of thermal expansion and cold shrinkage, so that the perfusion device is not loose after sterilization, and the rotating welding mode ensures that the adsorbent of the perfusion device will not be damaged, and ensures that the sealing performance of the shell and the product meet the requirements of sterility.

[0025] As Figures 2-4 shown, in this embodiment, the inside bottom surface of the welding box 1 is fixed with a mounting plate 3, the top surface of the mounting plate 3 is fixed with a support plate 301 and a fixed clamping plate 302 respectively near the left and right sides, the side of the support plate 301 close to the fixed clamping plate 302 is provided with a movable clamping plate 303, the side of the support plate 301 away from the movable clamping plate 303 is fixed with a clamping cylinder 304, the extension end of the clamping cylinder 304 penetrates through the support plate 301 and is fixed with the left side of the movable clamping plate 303, by placing the middle cylinder of the perfusion device on the top surface of the mounting plate 3, then starting the clamping cylinder 304 to drive the movable clamping plate 303 to move close to the fixed clamping plate 302, so that the middle cylinder of the perfusion device is clamped and fixed between the movable clamping plate 303 and the fixed clamping plate 302, then placing the end cover to be welded on the top surface of the middle cylinder, at this time the end cover can rotate relative to the middle cylinder.

[0026] AsFigures 2-4 As shown in the embodiment, the inside of the welding box 1 is fixed with an electronic ruler 4, the brush head of the electronic ruler 4 is fixed with the top surface of the lifting plate 2, the brush head of the electronic ruler 4 is synchronous with the lifting plate 2 during the whole welding process, and the actual welding depth is recorded, so that the pressing depth of the end cover is accurately determined.

[0027] As shown in the embodiment, the inside of the welding box 1 is fixed with four first supporting rods 5, the lifting plate 2 is slidingly arranged with the outer wall of the first supporting rod 5, the left side of the supporting plate 301 is slidingly arranged with two second supporting rods 501, the right end of the second supporting rod 501 is fixed with the left side of the movable clamping plate 303, the first supporting rod 5 can limit and support the up-down lifting of the lifting plate 2, and the second supporting rod 501 can limit and support the movement of the movable clamping plate 303. Figures 2-4 As shown in the embodiment, the inside of the welding box 1 is fixed with four first supporting rods 5, the lifting plate 2 is slidingly arranged with the outer wall of the first supporting rod 5, the left side of the supporting plate 301 is slidingly arranged with two second supporting rods 501, the right end of the second supporting rod 501 is fixed with the left side of the movable clamping plate 303, the first supporting rod 5 can limit and support the up-down lifting of the lifting plate 2, and the second supporting rod 501 can limit and support the movement of the movable clamping plate 303.

[0028] Figures 2-4 As shown in the embodiment, the inside of the welding box 1 is fixed with four first supporting rods 5, the lifting plate 2 is slidingly arranged with the outer wall of the first supporting rod 5, the left side of the supporting plate 301 is slidingly arranged with two second supporting rods 501, the right end of the second supporting rod 501 is fixed with the left side of the movable clamping plate 303, the first supporting rod 5 can limit and support the up-down lifting of the lifting plate 2, and the second supporting rod 501 can limit and support the movement of the movable clamping plate 303.

[0029] As shown in the embodiment, the inside of the welding box 1 is fixed with four first supporting rods 5, the lifting plate 2 is slidingly arranged with the outer wall of the first supporting rod 5, the left side of the supporting plate 301 is slidingly arranged with two second supporting rods 501, the right end of the second supporting rod 501 is fixed with the left side of the movable clamping plate 303, the first supporting rod 5 can limit and support the up-down lifting of the lifting plate 2, and the second supporting rod 501 can limit and support the movement of the movable clamping plate 303. Figures 2-4 As shown in the embodiment, the inside of the welding box 1 is fixed with four first supporting rods 5, the lifting plate 2 is slidingly arranged with the outer wall of the first supporting rod 5, the left side of the supporting plate 301 is slidingly arranged with two second supporting rods 501, the right end of the second supporting rod 501 is fixed with the left side of the movable clamping plate 303, the first supporting rod 5 can limit and support the up-down lifting of the lifting plate 2, and the second supporting rod 501 can limit and support the movement of the movable clamping plate 303.

[0030]

[0031] ​​(1) through the touch screen 601 welding setting, end cover welding position (higher than the starting position), the shell end cover 203 of the rising speed (90-170 mm / s), the shell end cover 203 of the falling speed (90-170 mm / s), the shell end cover 203 of the pre-pressing speed (5-20 mm / s), the shell end cover 203 of the rotating speed (35-45 R / s), the welding speed of the end cover (0.2-2 mm / s), the welding (rotation) time of the end cover (0.5-1 s), the starting pressure of the servo cylinder 204 (0-0.6 Mpa), the solidification depth after welding of the end cover (0.5-1 mm), the solidification time after welding of the end cover (2-4 s), the solidification speed after welding of the end cover (0-10 mm / s), after setting is completed;

[0032] (2) the middle cylinder of the perfusion device is placed on the top surface of the mounting plate 3, and then the clamping cylinder 304 is started to drive the movable clamping plate 303 to move close to the fixed clamping plate 302, so that the middle cylinder of the perfusion device is clamped and fixed between the movable clamping plate 303 and the fixed clamping plate 302, and then the end cover to be welded is placed on the top surface of the middle cylinder, at this time the end cover can rotate relative to the middle cylinder;

[0033] (3) the servo cylinder 204 is started to drive the lifting plate 2 and the shell end cover 203 to move downward at a relatively fast speed, which can save working time and improve working efficiency, when reaching the welding position, the end cover is sleeved in the inside of the shell end cover 203, at this time the end cover is not stressed, at this time the moving speed of the shell end cover 203 changes from the falling speed to the pre-pressing speed, the pre-pressing speed is slow, and the component will not be deformed due to the too large pressure value of the stress moment of the end cover;

[0034] (4) after the pressure sensor 202 senses that the pressure reaches the set value, the rotating head stops moving downward, the servo motor 201 is started according to the set value to drive the shell end cover 203 and the end cover to rotate at a high speed, and at the same time the servo cylinder 204 drives the end cover to move downward at a very slow welding speed, so as to achieve the welding effect of complete sealing with the smallest welding depth;

[0035] (5) after the end cover reaches the predetermined rotating time, the rotation is stopped, the servo cylinder 204 is pressed again according to the solidification set value, reaches the solidification position, and keeps pressing (makes the molten pp closely contact and solidify) according to the solidification time, and then drives the shell end cover 203 to separate from the end cover and rise, the brush head of the electronic ruler 4 synchronously rises and falls with the lifting plate 2 during the whole welding process, and records the actual welding depth, and the welding is completed.

[0036] Method two;

[0037] (1) Through the touch screen 601 to make welding settings, the end cap welding position (higher than the starting position), the rising speed of the shell end cap 203 (90-170 mm / s), the falling speed of the shell end cap 203 (90-170 mm / s), the pre-pressing speed of the shell end cap 203 (5-20 mm / s), the rotating speed of the shell end cap 203 (35-45 R / s), the welding speed of the end cap (0.2-2 mm / s), the welding (rotation) time of the end cap (0.5-1 s), the starting pressure of the servo cylinder 204 (0-0.6 Mpa), the solidification depth of the end cap after welding (0.5-1 mm), the solidification time of the end cap after welding (2-4 s), the solidification speed of the end cap after welding (0-10 mm / s), after the settings are completed;

[0038] (2) Place the middle cylinder of the cartridge on the top surface of the mounting plate 3, then start the clamping cylinder 304 to drive the movable clamping plate 303 to move close to the fixed clamping plate 302, so that the middle cylinder of the cartridge is clamped and fixed between the movable clamping plate 303 and the fixed clamping plate 302, then place the end cap to be welded on the top surface of the middle cylinder, at this time the end cap can rotate relative to the middle cylinder;

[0039] (3) Start the servo cylinder 204 to drive the lifting plate 2 and the shell end cap 203 to press down at a relatively fast speed, which can save working time and improve work efficiency, when reaching the welding position, the end cap is sleeved inside the shell end cap 203, at this time the end cap is not stressed, at this time the moving speed of the shell end cap 203 changes from the falling speed to the pre-pressing speed, the pre-pressing speed is slow, and the end cap will not be deformed due to the too large pressure value in the stress moment;

[0040] (4) After the pressure sensor 202 senses that the pressure reaches the set value, the rotating head stops pressing down, the servo motor 201 is started according to the set value to drive the shell end cap 203 and the end cap to rotate at a high speed, at the same time, the servo cylinder 204 drives the end cap to move downward at a very slow welding speed, so as to achieve the welding effect of complete sealing with the smallest welding depth;

[0041] (5) After the displacement of the end cap reaches the set welding depth, the rotation stops, the servo cylinder 204 presses again according to the set solidification value, reaches the solidification position, and keeps pressing according to the solidification time (makes the molten pp tightly contact and solidify), and then drives the shell end cap 203 to separate from the end cap and rise, the brush head of the electronic ruler 4 synchronously rises and falls with the lifting plate 2 during the whole welding process, and records the actual welding depth, the welding is completed, and the method two is suitable for products with more strict welding depth control;

[0042] It is worth noting that since the welding position of the end cap is higher than the actual rotating position, the rotation and friction start only after the pressure reaches the set value, which can effectively prevent the inconsistency of the welding effect caused by the slight size change of the shell during injection molding.

[0043] The basic principle and main features of the present application and the advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application.

Claims

1. A blood perfusion cartridge housing spin friction welding device comprising a welding box (1), characterized in that, The inside of the welding box (1) is provided with a welding assembly, which comprises a lifting plate (2) arranged in the welding box (1), the top surface of the lifting plate (2) is fixed with a servo motor (201), the output shaft of the servo motor (201) extends to the bottom surface of the lifting plate (2), the output shaft end of the servo motor (201) is fixed with a pressure sensor (202), the detection end of the pressure sensor (202) is connected with a shell end cover (203), the inside top surface of the welding box (1) is also fixed with a servo air cylinder (204), and the extension end of the servo air cylinder (204) is fixed with the top surface of the servo motor (201).

2. A rotating friction welding device for a hemoperfusion cartridge housing according to claim 1, characterized in that The inside bottom surface of the welding box (1) is fixed with a mounting plate (3), the top surface of the mounting plate (3) is fixed with a support plate (301) and a fixed clamping plate (302) near the left and right sides respectively, the side of the support plate (301) close to the fixed clamping plate (302) is provided with a movable clamping plate (303), and the side of the support plate (301) away from the movable clamping plate (303) is fixed with a clamping air cylinder (304), the extension end of the clamping air cylinder (304) penetrates through the support plate (301) and is fixed with the left side of the movable clamping plate (303).

3. A rotating friction welding apparatus for a hemocatheter housing as defined in claim 2, wherein The inside of the welding box (1) is fixed with an electronic ruler (4), and the brush head of the electronic ruler (4) is fixed with the top surface of the lifting plate (2).

4. A rotating friction welding apparatus for a hemoperfusion cartridge housing as defined in claim 3, wherein The inside of the welding box (1) is fixed with four first supporting rods (5), the lifting plate (2) and the outer wall of the first supporting rod (5) are slidingly arranged, and the left side of the support plate (301) is slidingly provided with two second supporting rods (501), and the right end of the second supporting rod (501) is fixed with the left side of the movable clamping plate (303).

5. A rotating friction welding apparatus for a hemocatheter housing as defined in claim 4, wherein The inside of the welding box (1) is provided with a control box (6) close to the top surface, a touch screen (601) is arranged on the front side of the control box (6), the servo motor 201, the pressure sensor 202, the servo air cylinder 204, the clamping air cylinder 304, the electronic ruler 4 and the touch screen (601) are electrically connected with the control box (6), and the front side of the welding box (1) is fixed with three driving buttons (602) and a reset button (603), the driving buttons (602) and the reset button (603) are electrically connected with the control box (6).

6. A rotating friction welding apparatus for a hemocatheter housing as defined in claim 5, wherein The bottom surface of the welding box (1) is fixed with a storage cabinet (7), and the front side of the storage cabinet (7) is connected with two cabinet doors through hinges.

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