Fully automatic external needle catheter melting head assembly equipment

Abstract

The present invention relates to the field of medical device manufacturing technology, and specifically to fully automatic external needle catheter melting head assembly equipment, the melting head assembly equipment includes a material transfer mechanism and a loading conveyor belt and a unloading conveyor belt arranged below the material transfer mechanism; the melting head assembly equipment also includes a loading turntable, and the loading turntable has two loading platforms; the melting head assembly equipment also includes a pressing mechanism, and the material transfer mechanism and the pressing mechanism correspond to the two loading platforms of the loading turntable respectively; the present invention promotes the automation of the medical device production process by combining automatic loading and unloading with friction welding and hot pressing technology, effectively improves production efficiency, reduces manual operation errors, and ensures consistency and precision in the production process; friction welding and hot pressing technology ensure high-strength connection and stability between the patch and the external needle catheter, improves the automation level of production, and provides a strong guarantee for product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of medical device manufacturing, in particular to fully automatic external needle catheter melting head assembly equipment. Background Art

[0002] With the continuous advancement of medical device technology, external needle catheters and patches are common medical products widely used in infusion, injection, wound care and other fields. Improving production efficiency, ensuring product quality, and ensuring process stability have become key technical challenges in the production of these medical devices. In particular, achieving automation, improving product consistency, and reducing the risks of manual operation have become important development directions for the industry.

[0003] like Figure 1 and Figure 2 The figure shows the assembly of a patch and an external needle catheter. Traditionally, their production relies on manual labor for loading and unloading, assembly, and welding. This approach is not only inefficient but also prone to human error, impacting product stability and quality. On the one hand, manual operation makes it difficult to maintain consistent precision, and on the other hand, the high labor intensity can easily lead to fatigue during the production process, negatively impacting product quality. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to propose a fully automatic external needle catheter melting head assembly device to realize the automated and process-based assembly production of external needle catheters and patches, effectively improving production efficiency and production quality.

[0005] Based on the above purpose, the present invention provides a fully automatic external needle catheter melting head assembly device for pressing the external needle catheter and the patch. The melting head assembly device includes a material transfer mechanism and a loading conveyor belt and a unloading conveyor belt arranged below the material transfer mechanism;

[0006] The melting head assembly equipment also includes a loading wheel turntable, which has two loading platforms, and the positions of the two loading platforms can be alternated;

[0007] The melting head assembly equipment further includes a pressing mechanism, and the material transfer mechanism and the pressing mechanism correspond to the two loading platforms of the loading wheel turntable respectively.

[0008] Preferably, the loading wheel turntable includes a first rotary cylinder, the output end of the first rotary cylinder is provided with a connecting column, the top end of the connecting column is provided with a table frame, and the table frame is a rectangular structure;

[0009] The loading platforms are respectively arranged at both ends of the table frame, and a ring cover body is wrapped under the table frame.

[0010] Preferably, the loading platform includes a first connecting frame arranged on the table frame, and the top of the first connecting frame is sequentially provided with a bottom frame piece and a top frame piece, and there is a gap between the bottom frame piece and the top frame piece for accommodating the patch, the bottom frame piece is provided with a slot for the external needle catheter to pass through, and the top frame piece is provided with a positioning groove corresponding to the shape of the top of the patch.

[0011] Preferably, a slide is provided at the end of the loading platform, and the first connecting frame is fixedly mounted on a slider of the first slide;

[0012] The loading wheel turntable also includes a double-axis cylinder for pushing the bottom of the first connecting frame.

[0013] Preferably, the pressing mechanism includes a first linear drive and a base provided at an output end of the first linear drive;

[0014] The base is provided with a bearing frame, and the pressing mechanism further includes a needle frame head and a rotary driver, wherein the needle frame head is rotatably connected to the bearing frame via a connecting shaft, and a core needle is provided at the bottom end of the needle frame head;

[0015] The rotary driver is in driving connection with the connecting shaft.

[0016] Preferably, the needle holder head includes a shell provided at the bottom end of the connecting shaft, the bottom end of the shell is provided with an end head, and the end head is threadedly connected to the shell;

[0017] A shaft is slidably provided inside the housing, and the core needle is provided at the bottom end of the shaft;

[0018] The bottom end of the end head is provided with a sleeve, the bottom end of the core shaft is fixedly connected to the sleeve, and the core needle passes through the sleeve and is exposed at the end head.

[0019] Preferably, the outer wall of the end head is provided with a tooth groove around it, the outer wall of the shell is hingedly provided with a bracket, and the bottom end of the bracket is provided with a protruding tooth that can engage with the tooth groove of the outer wall of the end head;

[0020] A spring is provided between the top end of the card frame and the outer wall of the shell body, for pushing the protruding teeth of the card frame to engage with the tooth grooves.

[0021] Preferably, the fusion head assembly device further comprises a second linear drive arranged below the pressing mechanism, and an output end of the second linear drive is provided with a support frame for supporting the chassis piece.

[0022] Preferably, the material transfer mechanism includes a support frame, on which a second slide and a second connecting frame slidably arranged on the second slide are provided;

[0023] A second rotary cylinder is provided at the bottom of the second connecting frame, and a pen-shaped cylinder is provided on the supporting frame for pushing the second connecting frame up and down;

[0024] The output end of the second rotary cylinder is provided with a first parallel finger cylinder, and the two workstations of the first parallel finger cylinder are respectively provided with a second parallel finger cylinder.

[0025] Beneficial effects of the present invention:

[0026] 1. This invention promotes the automation of the medical device production process by combining automatic loading and unloading with friction welding and hot pressing technologies, effectively improving production efficiency, reducing manual operation errors, and ensuring consistency and precision during the production process. Friction welding and hot pressing technologies ensure a high-strength and stable connection between the patch and the external needle catheter, improving the level of production automation and providing a strong guarantee for product quality.

[0027] 2. The pressing mechanism starts to work. The first linear drive drives the needle holder head to descend through the base. The core needle on the needle holder head penetrates into the external needle catheter for positioning. The bottom end of the end sleeve of the needle holder head will press the patch and the tail end of the external needle catheter. The rotary drive starts to work. The rotary drive drives the connecting shaft and drives it. In the process of the connecting shaft driving the needle holder head to rotate, the end generates high-speed rotation to produce friction welding on the contact point of the patch and the external needle catheter. The heat is generated by friction, which increases the temperature of the plastic contact surface and melts the plastic on the contact surface to form a semi-molten or completely melted plastic layer. The end exerts pressure to promote the fusion of the molten plastic. After cooling, the molten plastic solidifies to form a high-strength connection.

[0028] 3. The length of the core needle can be adjusted. The shaft is driven down by opening the bracket and rotating the end, thereby causing the core needle to descend. The purpose of the bracket is to form a card fixation through the engagement of its convex teeth with the tooth grooves on the outer wall of the end. The purpose of the core needle is to position the external needle catheter and prevent the fluid from entering the catheter during the hot melt process, causing blockage inside the catheter. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 Schematic diagram of the combined state of the patch and the external needle Figure 1 ;

[0031] Figure 2Schematic diagram of the combined state of the patch and the external needle Figure 2 ;

[0032] Figure 3 It is a schematic diagram of the three-dimensional structure of the present invention;

[0033] Figure 4 Schematic diagram of the three-dimensional structure of the material transfer mechanism of the present invention;

[0034] Figure 5 It is a schematic diagram of the three-dimensional structure of the loading wheel turntable and the pressing mechanism of the present invention;

[0035] Figure 6 Schematic diagram of the three-dimensional structure of the loading wheel turntable of the present invention;

[0036] Figure 7 Schematic diagram of the three-dimensional structure of the pressing mechanism of the present invention;

[0037] Figure 8 It is a schematic diagram of the partial structure of the pressing mechanism of the present invention;

[0038] Figure 9 for Figure 8 Enlarged view of point A.

[0039] The numbers in the figure are:

[0040] 1-loading conveyor belt; 2-unloading conveyor belt; 3-material transfer mechanism; 31-support frame; 32-second slide; 33-second connecting frame; 34-pen-shaped cylinder; 35-second rotary cylinder; 36-first parallel finger cylinder; 37-second parallel finger cylinder; 4-loading wheel table; 41-loading platform; 411-first connecting frame; 412-bottom frame; 413-top frame; 414-first slide; 42-first Rotary cylinder; 43-connecting column; 431-table frame; 44-ring cover; 45-double-axis cylinder; 5-pressing mechanism; 51-first linear drive; 52-base; 53-bearing frame; 54-needle holder; 541-housing; 542-end; 543-shaft; 544-card holder; 545-spring; 55-connecting shaft; 56-core needle; 57-rotating drive; 6-second linear drive; 61-support frame. DETAILED DESCRIPTION

[0041] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to specific embodiments.

[0042] It should be noted that, unless otherwise defined, the technical or scientific terms used in the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0043] The first aspect of the present invention provides a fully automatic external needle catheter melting head assembly device, such as Figures 1 to 9 As shown, the fully automatic external needle catheter melting head assembly equipment is used to press the external needle catheter and the dressing sheet. The melting head assembly equipment includes a material transfer mechanism 3 and a loading conveyor belt 1 and a unloading conveyor belt 2 arranged below the material transfer mechanism 3;

[0044] The melting head assembly equipment further includes a loading wheel turntable 4, wherein the loading wheel turntable 4 has two loading platforms 41, and the positions of the two loading platforms 41 can be alternated;

[0045] The melting head assembly equipment further includes a pressing mechanism 5 . The material transfer mechanism 3 and the pressing mechanism 5 correspond to the two loading platforms 41 of the loading wheel turret 4 , respectively.

[0046] The loading wheel turntable 4 includes a first rotary cylinder 42, the output end of the first rotary cylinder 42 is provided with a connecting column 43, the top of the connecting column 43 is provided with a table frame 431, and the table frame 431 is a rectangular structure;

[0047] The loading platform 41 is respectively provided at both ends of the table frame 431 , and a ring cover 44 is provided below the table frame 431 .

[0048] The loading platform 41 includes a first connecting frame 411 arranged on a table frame 431, and a bottom frame piece 412 and a top frame piece 413 are sequentially arranged on the top of the first connecting frame 411, and there is a gap between the bottom frame piece 412 and the top frame piece 413 to accommodate the patch, and a slot for the external needle catheter to pass through is provided on the bottom frame piece 412, and a positioning slot corresponding to the shape of the top of the patch is provided on the top frame piece 413.

[0049] A slide is provided at the end of the loading platform 41, and the first connecting frame 411 is fixedly mounted on the slider of the first slide 414;

[0050] The loading wheel turntable 4 further includes a dual-axis cylinder 45 for pushing the bottom of the first connecting frame 411 .

[0051] The pressing mechanism 5 includes a first linear drive 51 and a base 52 provided at the output end of the first linear drive 51;

[0052] The base 52 is provided with a bearing frame 53, and the pressing mechanism 5 further includes a needle frame head 54 and a rotary driver 57. The needle frame head 54 is rotatably connected to the bearing frame 53 via a connecting shaft 55, and a core needle 56 is provided at the bottom end of the needle frame head 54;

[0053] The rotary driver 57 is in driving connection with the connecting shaft 55 .

[0054] The needle holder head 54 includes a housing 541 disposed at the bottom end of the connecting shaft 55. The bottom end of the housing 541 is provided with an end head 542, and the end head 542 is threadedly connected to the housing 541.

[0055] A shaft 543 is slidably disposed inside the housing 541 , and the core needle 56 is disposed at the bottom end of the shaft 543 ;

[0056] The bottom end of the end head 542 has a sleeve, the bottom end of the core shaft is fixedly connected to the sleeve, and the core needle 56 passes through the sleeve and is exposed at the end head 542.

[0057] The outer wall of the end head 542 is surrounded by a tooth groove, and the outer wall of the housing 541 is hingedly provided with a bracket 544, and the bottom end of the bracket 544 is provided with a protruding tooth that can engage with the tooth groove of the outer wall of the end head 542;

[0058] A spring 545 is provided between the top end of the card frame 544 and the outer wall of the housing 541 for pushing the protruding teeth of the card frame 544 to engage with the tooth grooves.

[0059] The fusion head assembly device further includes a second linear drive 6 disposed below the pressing mechanism 5 . The output end of the second linear drive 6 is provided with a support frame 61 for supporting the chassis piece 412 .

[0060] The material transfer mechanism 3 includes a support frame 31, on which a second slide 32 and a second connecting frame 33 slidably arranged on the second slide 32 are provided;

[0061] A second rotary cylinder 35 is provided at the bottom of the second connecting frame 33, and a pen-shaped cylinder 34 is provided on the support frame 31 to push the second connecting frame 33 up and down.

[0062] The output end of the second rotary cylinder 35 is provided with a first parallel finger cylinder 36 , and two workstations of the first parallel finger cylinder 36 are respectively provided with a second parallel finger cylinder 37 .

[0063] In this embodiment, the patch and the external needle catheter have been spliced ​​before entering the process of this equipment. The patch and the external needle catheter assembly are transported to the loading end of the material transfer mechanism 3 by the loading conveyor belt 1. The material transfer mechanism 3 starts to work, and the pen-shaped cylinder 34 pushes the second connecting frame 33 downward to make one of the second parallel finger cylinders 37 close to the patch and the external needle catheter assembly, and clamps it by the two flat surfaces on the upper surface of the patch. Then the pen-shaped cylinder 34 drives the second parallel finger to rise and cooperates with the second rotary cylinder 35 to rotate 180 degrees. The first parallel finger cylinder 36 controls the two second parallel finger cylinders 37 to move away from each other, and the second parallel finger cylinder 37 carrying the patch and the external needle catheter assembly drives the load to be inserted between the bottom frame piece 412 and the top frame piece 413;

[0064] The first rotary cylinder 42 of the loading wheel table 4 drives the table frame 431 to rotate through the connecting rod. The table frame 431 drives the patch and the external needle catheter assembly to rotate above the support frame 61. The output end of the dual-axis cylinder 45 extends and supports the bottom end of the first connecting frame 411. The second linear drive 6 is a screw slide or a pneumatic slide but is not limited to this. The second linear drive 6 drives the support frame to rise to support the bottom of the bottom frame piece 412.

[0065] The pressing mechanism 5 starts to work, and the first linear drive 51 is a screw slide or a pneumatic slide but is not limited thereto. The first linear drive 51 drives the needle holder head 54 to descend through the base 52, and the core needle 56 on the needle holder head 54 is inserted into the external needle catheter for positioning. The bottom end of the sleeve of the end head 542 of the needle holder head 54 will press the patch and the tail end of the external needle catheter, and the rotary drive 57 starts to work. The rotary drive 57 is a stepper motor in this solution. The stepper motor is connected to and drives the connecting shaft 55 through a synchronous belt and a synchronous pulley. In the process of the connecting shaft 55 driving the needle holder head 54 to rotate, the end head 542 generates high-speed rotation to generate friction welding on the contact point between the patch and the external needle catheter, and heat is generated by friction, which increases the temperature of the plastic contact surface and melts the plastic on the contact surface to form a semi-molten or completely melted plastic layer, and the end head 542 applies pressure to promote the fusion of the molten plastic. At this time, the combination of the patch and the external needle catheter is completed;

[0066] The purpose of the core needle 56 is to position the external needle catheter and prevent fluid from entering the catheter during the hot melt process, thereby preventing the catheter from being blocked. The length of the core needle 56 is adjustable. By opening the bracket 544 and rotating the end 542, the shaft 543 is driven downward, thereby lowering the core needle 56. The purpose of the bracket 544 is to form a fixed connection through the engagement of its protruding teeth with the outer wall grooves of the end 542.

[0067] Next, the second linear drive 6 drives the pallet frame 61 to descend, and the output end of the dual-axis cylinder 45 descends to stop supporting the first connecting frame 411. The first rotary cylinder 42 drives the assembled patch and the external needle catheter to move to the unloading conveyor belt 2. Finally, through the cooperation of the material transfer mechanism 3 and its second parallel finger cylinder 37, it is transferred to the unloading conveyor belt 2 and transported to the next process.

[0068] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention is limited to these examples. Within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0069] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. Fully automatic external needle catheter melting head assembly equipment, used to press the external needle catheter and the dressing sheet, characterized by: The melting head assembly equipment comprises a material transfer mechanism (3) and a loading conveyor belt (1) and a unloading conveyor belt (2) arranged below the material transfer mechanism (3); The melting head assembly equipment further comprises a material loading wheel turntable (4), wherein the material loading wheel turntable (4) has two material loading platforms (41), and the positions of the two material loading platforms (41) can be alternated; The melting head assembly equipment further comprises a pressing mechanism (5), wherein the material transfer mechanism (3) and the pressing mechanism (5) respectively correspond to the two loading platforms (41) of the loading wheel turntable (4); The pressing mechanism (5) comprises a first linear drive (51) and a base (52) arranged at the output end of the first linear drive (51); A bearing frame (53) is provided on the base (52), and the pressing mechanism (5) further includes a needle frame head (54) and a rotary driver (57). The needle frame head (54) is rotatably connected to the bearing frame (53) via a connecting shaft (55). A core needle (56) is provided at the bottom end of the needle frame head (54), and the core needle (56) is used to penetrate into the external needle catheter for positioning; The rotary driver (57) is in driving connection with the connecting shaft (55).

2. The fully automatic external needle catheter melting head assembly equipment according to claim 1, characterized in that: The loading wheel turntable (4) includes a first rotary cylinder (42), the output end of the first rotary cylinder (42) is provided with a connecting column (43), the top end of the connecting column (43) is provided with a table frame (431), and the table frame (431) is a rectangular structure; The loading platform (41) is respectively arranged at both ends of the table frame (431), and a ring cover body (44) is provided below the table frame (431).

3. The fully automatic external needle catheter melting head assembly equipment according to claim 2, characterized in that: The loading platform (41) includes a first connecting frame (411) arranged on a table frame (431), and a bottom frame piece (412) and a top frame piece (413) are sequentially arranged on the top of the first connecting frame (411), and a gap for accommodating a patch is provided between the bottom frame piece (412) and the top frame piece (413), a slot for an external needle catheter to pass through is provided on the bottom frame piece (412), and a positioning slot corresponding to the shape of the top of the patch is provided on the top frame piece (413).

4. The fully automatic external needle catheter melting head assembly equipment according to claim 3, characterized in that: A slide is provided at the end of the loading platform (41), and the first connecting frame (411) is fixedly mounted on a slider of the first slide (414); The loading wheel turntable (4) also includes a double-axis cylinder (45) for pushing the bottom of the first connecting frame (411).

5. The fully automatic external needle catheter melting head assembly equipment according to claim 1, characterized in that: The needle holder head (54) includes a housing (541) disposed at the bottom end of the connecting shaft (55), a terminal (542) is disposed at the bottom end of the housing (541), and the terminal (542) is threadedly connected to the housing (541); A shaft (543) is slidably provided inside the housing (541), and a core needle (56) is provided at the bottom end of the shaft (543); The bottom end of the end head (542) has a sleeve, the bottom end of the core shaft is fixedly connected to the sleeve, and the core needle (56) passes through the sleeve and is exposed at the end head (542).

6. The fully automatic external needle catheter melting head assembly equipment according to claim 5, characterized in that: The outer wall of the end head (542) is provided with a tooth groove around it, the outer wall of the housing (541) is hingedly provided with a bracket (544), and the bottom end of the bracket (544) is provided with a protruding tooth that can engage with the tooth groove of the outer wall of the end head (542); A spring (545) is provided between the top end of the card frame (544) and the outer wall of the housing (541) for pushing the protruding teeth of the card frame (544) to engage with the tooth grooves.

7. The fully automatic external needle catheter melting head assembly equipment according to claim 3, characterized in that: The melting head assembly device further comprises a second linear drive (6) arranged below the pressing mechanism (5), and an output end of the second linear drive (6) is provided with a support frame (61) for supporting the base frame (412).

8. The fully automatic external needle catheter melting head assembly equipment according to claim 1, characterized in that: The material transfer mechanism (3) includes a support frame (31), a second slide (32) and a second connecting frame (33) slidably arranged on the second slide (32) are provided on the support frame (31); A second rotary cylinder (35) is provided at the bottom of the second connecting frame (33), and a pen-shaped cylinder (34) is provided on the support frame (31) for pushing the second connecting frame (33) up and down. The output end of the second rotary cylinder (35) is provided with a first parallel finger cylinder (36), and two workstations of the first parallel finger cylinder (36) are respectively provided with a second parallel finger cylinder (37).

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