Folding and pressing assembly device for blood collection needle safety seat

Abstract

The present invention relates to the technical field of automated assembly of venous blood collection needles, and in particular to a folding and pressing assembly device for a safety seat of a blood collection needle, comprising a safety seat and a blood collection needle body, the safety seat comprising an upper seat, a lower seat and a through hole located at the connection between the upper seat and the lower seat, and also comprising a folding component, the folding component comprising a needle body clamping portion and a safety seat folding portion for limiting the needle body of the blood collection needle, the safety seat folding portion being provided with a safety seat carrier assembly and a power assembly, the safety seat carrier assembly being able to cover the safety seat on the blood collection needle body and complete the pre-folding of the safety seat under the action of the power assembly; a pressing component, the pressing component being located on the side of the folding component close to the safety seat, the pressing component being provided with a straightening device for straightening the safety seat and a pressing device for pressing the pre-folded safety seat, the device can realize automated assembly of the safety seat and improve the efficiency of installing the safety seat.

Description

Technical Field

[0001] The invention relates to the technical field of automatic assembly of venous blood collection needles, and in particular to a folding and pressing assembly device for a blood collection needle safety seat. Background Art

[0002] A venous blood collection needle is a blood collection needle used to collect blood samples during medical examinations. The needle at the top of the needle body is used to puncture the blood vessel, and the transparent hose at the tail is connected to the needle tail. In order to make the connection between the needle tail and the tail hose more secure, a safety seat is usually installed on the outside. Since the installation of the safety seat is the last step in the assembly of the venous blood collection needle, the current conventional operation is manual assembly by operators, which has low assembly efficiency.

[0003] The Chinese utility model patent with the authorization announcement number CN206084352U discloses a butterfly-wing type blood collection needle assembly device, including a mounting platform supported on a working ground, a mounting plate rotatably provided on the mounting platform, a plurality of carriers for mounting needle handles provided on the outer ring surface of the mounting plate, and the plurality of carriers are evenly spaced along the circumference of the mounting plate; a needle handle installation station for vertically inserting the input needle handle into the carrier, a needle insertion workstation for vertically inserting the input blood collection needle into the central hole of the needle handle, and a needle insertion workstation for inserting the needle handle into the central hole of the needle handle are provided on the mounting platform. The angle detection station is used to adjust the blood collection needle in the center hole so that the angle between the detection surface on the tip of the blood collection needle and the reference surface on the needle handle meets the design requirements; the glue dispensing station is used to drip glue into the gap between the blood collection needle and the needle handle to make the blood collection needle and the needle handle bonded; the sheath installation station is used to install the sheath protecting the blood collection needle on the needle handle; the good product output station is used to output the assembled and qualified blood collection needle outward; the needle handle installation station, the needle insertion workstation, the angle detection station, the glue dispensing station, the sheath installation station, and the good product output station are arranged in sequence along the rotation direction of the installation disk. The above-mentioned public scheme realizes the automation of the assembly process, so that the blood collection needle has high precision and good reliability after assembly, but the above-mentioned scheme does not disclose the automatic installation scheme of the safety seat after the blood collection needle is assembled. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention provides a folding and pressing assembly device for a blood collection needle safety seat.

[0005] To achieve the above-mentioned purpose, the present invention discloses a folding and pressing assembly device for a blood collection needle safety seat, comprising a safety seat and a blood collection needle body, wherein the safety seat comprises an upper seat, a lower seat and a through hole located at the connection between the upper seat and the lower seat, and further comprises a folding assembly, wherein the folding assembly comprises a needle body clamping portion and a safety seat folding portion for limiting the position of the blood collection needle body, wherein the safety seat folding portion is provided with a safety seat carrier assembly and a power assembly, wherein the safety seat carrier assembly can cover the safety seat on the blood collection needle body under the action of the power assembly and complete the pre-folding of the safety seat;

[0006] A pressing assembly is located on the side of the folding assembly close to the safety seat, and the pressing assembly is provided with a straightening device for straightening the safety seat and a pressing device for pressing the pre-folded safety seat.

[0007] Preferably, the safety seat carrier assembly is provided with a first base, and a safety seat carrier and an ejector assembly for placing a plurality of the safety seats are provided in sequence from top to bottom at the front of the first base, and the power assembly is located at the rear of the first base, and includes a first power push rod group and a second power push rod group, and ends of the first power push rod group and the second power push rod group can both pass through the first base and are respectively connected to the safety seat carrier and the ejector assembly, and a plurality of ejectors are provided on the ejector assembly.

[0008] Preferably, the first power push rod group is provided with a first connecting plate, a thrust shaft passes through the first connecting plate, the thrust shaft is provided with a second connecting plate at one end close to the first base, the second connecting plate is provided with a plurality of push rods passing through the safety seat carrier and abutting against the back of each upper seat, a thrust plate is provided at the other end of the thrust shaft, and a spring is further sleeved on the thrust shaft between the thrust plate and the first connecting plate.

[0009] Preferably, a connecting plate is further provided at the rear of the first base, and a plurality of guide needles are provided on the connecting plate which can pass through the through hole and abut against the blood collection needle body, and the safety seat carrier is provided with a limiting groove which cooperates with the flange of the lower seat.

[0010] Preferably, the needle body clamping portion is provided with a plurality of groups of fixing clips for fixing the wing plates on both sides of the blood collection needle body, and every two groups of fixing clips fix one blood collection needle body and make it correspond to the safety seat, and the fixing clip is provided with a base, and the base is hinged with a flip-up cover, and the flip-up cover corresponds to the ejector pin.

[0011] Preferably, the straightening device includes an upper clamping part and a lower clamping part, the upper clamping part includes a second base and an upper alignment plate, the second base is equipped with a first cylinder for driving the upper alignment plate to move vertically, the clamping device is provided with multiple groups of pressure heads, each group of pressure heads is driven by a second cylinder at the top thereof to achieve vertical displacement, and the second cylinder is installed on the second base.

[0012] Preferably, the lower clamping portion is provided with a third base, and a support assembly is provided above the third base. The support assembly includes a bracket assembly and a safety seat outer fork plate for positioning the tail hose of the blood collection needle body. The bracket assembly and the safety seat outer fork plate are respectively provided with a first lifting cylinder and a second lifting cylinder for vertical displacement thereof.

[0013] Preferably, the bracket assembly includes a support plate and a lower alignment plate, the lower alignment plate is provided with a groove cavity for accommodating the upper alignment plate, the upper alignment plate and the lower alignment plate are respectively provided with multiple groups of first notches matching with the upper seat and the lower seat to achieve the alignment of the safety seat, the support plate is provided with multiple groups of second notches for accommodating the ends of the safety seat, and the second notches cooperate with the pressure head to achieve the pressing of the safety seat.

[0014] Preferably, the first notch has a Y-shaped cross section, a slide rail assembly is provided between the third base and the support assembly, and the support assembly can be pushed by the third cylinder to achieve horizontal displacement.

[0015] Preferably, the pressing assembly is also provided with a clamping assembly for clamping the tail hose of the blood collection needle body, and the clamping assembly is provided with a pneumatic gripper corresponding to each group of the tail hoses of the blood collection needle body, and a propulsion cylinder is provided at the rear end of the pneumatic gripper to enable the pneumatic gripper to move closer to or away from the tail of the blood collection needle body.

[0016] The beneficial effects of the present invention are:

[0017] 1. The device can realize the automatic installation of the safety seat on the blood collection needle body, and complete the folding and pressing. In the process of batch assembly of blood collection needles, the automatic assembly of the safety seat greatly improves the efficiency of its installation.

[0018] 2. To ensure the qualified rate of the safety seat assembly, the safety seat is guided by a guide needle during the process of being put on the blood collection needle body. In order to prevent defects caused by deviation during the pressing process, this device uses a straightening device to align the safety seat to ensure the accuracy of the pressing position; at the same time, in order to avoid accidental pressure on the tail hose during automatic pressing, a clamping assembly is used to put the tail hose in place to prevent the pressure head from accidentally pressing on the tail hose. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the safety seat structure of the present invention;

[0020] Figure 2 It is a three-dimensional diagram of the overall structure of the present invention;

[0021] Figure 3 is a three-dimensional diagram of the folding assembly of the present invention;

[0022] Figure 4 for Figure 3 Magnified view of area A in the middle;

[0023] Figure 5 A partial cross-sectional view of the folding assembly of the present invention;

[0024] Figure 6 It is a partial stereoscopic diagram of the righting device of the present invention;

[0025] Figure 7 is a three-dimensional diagram of the lower clamping portion of the present invention;

[0026] Figure 8 for Figure 7 Magnified view of area B;

[0027] Fig. 9 It is a three-dimensional diagram of the clamping assembly of the present invention.

[0028] In the figure, 1, safety seat; 101, upper seat; 102, through hole; 103, lower seat; 104, flange; 2, blood collection needle body; 3, folding assembly; 4, needle body clamping part; 5, safety seat folding part; 6, safety seat carrier assembly; 601, first base; 602, safety seat carrier; 603, ejector assembly; 604, ejector; 605, limit slot; 7, power assembly; 8, pressing assembly; 9, straightening device; 10, pressing device; 11, first power push rod group; 12, second power push rod group; 13, first connecting plate; 14, thrust shaft; 15, second connecting plate; 16, ejector; 17, thrust plate; 18, spring; 19, Fixing clamp; 20, base; 21, upper flap; 22, connecting plate; 23, guide pin; 24, upper clamping part; 25, lower clamping part; 26, second base; 27, upper alignment plate; 28, first cylinder; 29, pressure head; 30, second cylinder; 31, third base; 32, support assembly; 33, support frame; 34, bracket assembly; 35, outer fork plate of safety seat; 36, second lifting cylinder; 37, first lifting cylinder; 38, bracket; 39, lower alignment plate; 40, groove cavity; 41, first notch; 42, second notch; 43, slide rail assembly; 44, third cylinder; 45, clamping assembly; 46, pneumatic gripper; 47, thrust cylinder. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1 To Attachment Fig. 9 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, rather than to limit the scope of the present invention.

[0030] Blood collection needle safety seat folding and pressing assembly device, such as Figure 1 — Figure 5 As shown, in this embodiment, the blood collection needle includes a safety seat 1 and a blood collection needle body 2. The safety seat 1 includes an upper seat 101, a lower seat 103 and a through hole 102 located at the connection between the upper seat 101 and the lower seat 103.

[0031] The device includes a folding assembly 3 and a pressing assembly 8. The folding assembly 3 is mounted on a turntable and can rotate to different positions with the turntable. The folding assembly 3 includes a needle body clamping portion 4 for limiting the position of the blood collection needle body 2 and a safety seat folding portion 5 for carrying the safety seat 1. The safety seat folding portion 5 is provided with a safety seat carrier assembly 6 and a power assembly 7. Under the action of the power assembly 7, the safety seat carrier assembly 6 can sleeve the safety seat 1 on the blood collection needle body 2 and complete the pre-folding of the safety seat 1.

[0032] Specifically, the safety seat carrier assembly 6 is provided with a first base 601, which is fixedly connected to the turntable. The front part of the first base 601 is provided with a safety seat carrier 602 and a pin assembly 603 for placing a plurality of safety seats 1 in sequence from top to bottom. The power assembly 7 is located at the rear part of the first base 601, and includes a first power push rod group 11 and a second power push rod group 12. Both ends of the first power push rod group 11 and the second power push rod group 12 can pass through the first base 601 and are respectively connected to the safety seat carrier 602 and the pin assembly 603. The pin assembly 603 is provided with a plurality of pins 604. In this embodiment, the safety seat carrier 602 can place ten groups of safety seats 1 at the same time.

[0033] The first power push rod group 11 is provided with a first connecting plate 13, and a thrust shaft 14 passes through the first connecting plate 13. The thrust shaft 14 is provided with a second connecting plate 15 at one end close to the first base 601. The second connecting plate 15 is provided with a plurality of push rods 16 that pass through the safety seat carrier 602 and abut against the back of each upper seat 101. A thrust plate 17 is provided at the other end of the thrust shaft 14. A spring 18 is also sleeved between the thrust plate 17 and the first connecting plate 13 of the thrust shaft 14. When an external thrust acts on the thrust plate 17, under the buffering of the spring 18, the second connecting plate 15 drives the push rod 16 to displace first, and then the first connecting plate 13 drives the first power push rod group 11 to push the safety seat carrier 602 to displace. When the external thrust is cancelled, the second connecting plate 15 drives the push rod 16 to reset under the action of the spring 18. Similarly, the safety seat carrier 602 is also reset by the action of the interval spring.

[0034] The blood collection needle body 2 is fixed by the needle body clamping part 4. Specifically, the needle body clamping part 4 is provided with a plurality of groups of fixing clips 19 for fixing the wing plates on both sides of the blood collection needle body 2. Every two groups of fixing clips 19 fix one blood collection needle body 2 and make it correspond to the safety seat 1. The fixing clip 19 is provided with a base 20. The base 20 is hinged with a flip-up cover 21. The flip-up cover 21 corresponds to the ejector pin 604. When external thrust acts on the second power push rod group 12, the second power push rod group 12 pushes the ejector pin assembly 603 to drive the ejector pin 604 to move so that the upper flip cover 21 opens. At this time, the two side wing plates of the blood collection needle body 2 can be placed in the two groups of fixing clips 19 respectively. When the external thrust is cancelled, the ejector pin assembly 603 drives the ejector pin 604 to reset, and the upper flip cover 21 automatically snaps in place to limit the wing plates of the blood collection needle body 2. The principle of the ejector pin assembly 603 driving the ejector pin 604 to reset is the same as the above-mentioned ejector pin 16, which will not be repeated here.

[0035] The safety seat carrier 602 is provided with a limiting slot 605 that cooperates with the flange 104 of the lower seat 103. When the push rod 16 moves before the safety seat carrier 602, it pushes the flange 104 into the limiting slot 605 for limiting. When the safety seat carrier 602 and the push rod 16 continue to push the safety seat 1 to move along the guide pin 23, the push rod 16 pushes the back of the upper seat 101 to fold downward, thereby realizing the pre-folding of the safety seat 1.

[0036] In order to enable the safety seat 1 to be smoothly mounted on the blood collection needle body 2, a connecting plate 22 is provided at the rear of the first base 601. The connecting plate 22 is provided with a plurality of guide needles 23 that can penetrate the through holes 102 and abut against the blood collection needle body 2. The guide needles 23 play a guiding role during the displacement of the safety seat 1.

[0037] like Figure 6 — Fig. 9 As shown, after the safety seat 1 is pre-folded, it is pressed by the pressing assembly 8, and the pressing assembly 8 is located on the side of the folding assembly 3 close to the safety seat 1. The pressing assembly 8 is provided with a straightening device 9 for straightening the safety seat 1 and a pressing device 10 for pressing the pre-folded safety seat 1. The pressing device 10 is provided with multiple groups of pressing heads 29, and each group of pressing heads 29 can be driven by a second cylinder 30 at the top thereof to achieve vertical displacement, and the second cylinder 30 is installed on the second base 26.

[0038] Specifically, the straightening device 9 includes an upper clamping part 24 and a lower clamping part 25, the upper clamping part 24 includes a second base 26 and an upper alignment plate 27, and a first cylinder 28 for driving the upper alignment plate 27 to move vertically is installed on the second base 26. The lower clamping part 25 is provided with a third base 31, and a support assembly 32 is provided above the third base 31. The support assembly 32 includes a support frame 33, and a bracket assembly 34 and a safety seat outer fork plate 35 for aligning the tail hose of the blood collection needle body 2 are provided above the support frame 33. The bracket assembly 34 and the safety seat outer fork plate 35 are respectively provided below the bracket assembly 34 and the safety seat outer fork plate 35 to make the vertical displacement. The bracket assembly 34 includes a support plate 38 and a lower alignment plate 39. The lower alignment plate 39 is provided with a groove 40 for accommodating the upper alignment plate 27. The upper alignment plate 27 and the lower alignment plate 39 are respectively provided with a plurality of first notches 41 that match the upper seat 101 and the lower seat 103, which can realize the alignment of the safety seat 1 and prevent the safety seat 1 from shifting during the pressing process. In this embodiment, the first notch 41 has a Y-shaped cross section, which matches the shape of the upper seat 101 and the lower seat 103. The support plate 38 is provided with a plurality of second notches 42 that accommodate the ends of the safety seat 1. The second notches 42 cooperate with the pressure head 29 to realize the pressing of the safety seat 1. In order to accurately perform the pressing operation, a slide rail assembly 43 is provided between the third base 31 and the support assembly 32. The support assembly 32 can be pushed by the third cylinder 44 to achieve horizontal displacement and position adjustment.

[0039] In order to prevent the tail hose of the blood collection needle body 2 from being accidentally pressed during the pressing process, the pressing assembly 8 is also provided with a clamping assembly 45 for clamping the tail hose of the blood collection needle body 2. The clamping assembly 45 is provided with a pneumatic gripper 46 corresponding to the tail hose of each group of blood collection needle bodies 2. A propulsion cylinder 47 is provided at the rear end of the pneumatic gripper 46 to enable the pneumatic gripper 46 to approach or move away from the tail of the blood collection needle body 2. Before the pressing action, the propulsion cylinder 47 pushes the pneumatic gripper 46 close to the hose and clamps it, and then the propulsion cylinder 47 drives the pneumatic gripper 46 to move backward to straighten the hose, thereby effectively avoiding the pressing action and preventing accidental pressing.

[0040] Working principle of the present invention: ten groups of safety seats 1 and blood collection needle bodies 2 are loaded in place on the folding assembly 3, the guide needle 23 passes through the through hole 102 and abuts against the end of the blood collection needle body 2, and the external thrust acts on the thrust plate 17. When the push rod 16 moves before the safety seat carrier 602, the flange 104 is pushed into the limit slot 605 for limiting. During the process of the safety seat carrier 602 and the push rod 16 continuing to push the safety seat 1 to move along the guide needle 23, the push rod 16 pushes the back of the upper seat 101 to fold downward, thereby realizing the pre-folding of the safety seat 1; under the action of the third cylinder 44, the upper positioning plate 27 and the groove cavity 40 is aligned, and the upper positioning plate 27 falls into the groove cavity 40 and clamps the safety seat 1 in the right position through the joint action of the first cylinder 28 and the first lifting cylinder 37. The second lifting cylinder 36 drives the outer fork plate 35 of the safety seat to support the tail hose in the right position. The pneumatic gripper 46 straightens the tail hose under the action of the thrust cylinder 47. The second cylinder 30 drives the pressure head 29 to move downward and fall into the second slot 42 to press the safety seat 1, thereby realizing fully automated pre-folding and pressing of the safety seat 1. The device can realize the automated assembly of the safety seat 1, effectively ensure the assembly accuracy, and reduce the defective rate.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A folding and pressing assembly device for a blood collection needle safety seat, comprising a safety seat (1) and a blood collection needle body (2), wherein the safety seat (1) comprises an upper seat (101), a lower seat (103) and a through hole (102) located at the connection between the upper seat (101) and the lower seat (103), characterized in that: It also includes a folding assembly (3), the folding assembly (3) including a needle body clamping portion (4) for limiting the position of the blood collection needle body (2) and a safety seat folding portion (5), the safety seat folding portion (5) being provided with a safety seat carrier assembly (6) and a power assembly (7), and the safety seat carrier assembly (6) can sleeve the safety seat (1) on the blood collection needle body (2) and complete the pre-folding of the safety seat (1) under the action of the power assembly (7); a pressing assembly (8), the pressing assembly (8) being located on a side of the folding assembly (3) close to the safety seat (1), the pressing assembly (8) being provided with a straightening device (9) for straightening the safety seat (1) and a pressing device (10) for pressing the pre-folded safety seat (1); The safety seat carrier assembly (6) is provided with a first base (601), and the front part of the first base (601) is provided with a safety seat carrier (602) and a pin assembly (603) for placing a plurality of the safety seats (1) in sequence from top to bottom. The power assembly (7) is located at the rear part of the first base (601), and comprises a first power push rod group (11) and a second power push rod group (12). The ends of the first power push rod group (11) and the second power push rod group (12) can both pass through the first base (601) and are respectively connected to the safety seat carrier (602) and the pin assembly (603), and the pin assembly (603) is provided with a plurality of pins (604); The first power push rod group (11) is provided with a first connecting plate (13), a thrust shaft (14) passing through the first connecting plate (13), a second connecting plate (15) being provided at one end of the thrust shaft (14) close to the first base (601), a plurality of push rods (16) passing through the safety seat carrier (602) and abutting against the back of each upper seat (101) being provided on the second connecting plate (15), a thrust plate (17) being provided at the other end of the thrust shaft (14), and a spring (18) being sleeved between the thrust plate (17) and the first connecting plate (13) on the thrust shaft (14); A connecting plate (22) is also provided at the rear of the first base (601), and a plurality of guide needles (23) are provided on the connecting plate (22) that can pass through the through hole (102) and abut against the blood collection needle body (2). The safety seat carrier (602) is provided with a limit slot (605) that cooperates with the flange (104) of the lower seat (103).

2. The folding and pressing assembly device for the blood collection needle safety seat according to claim 1, characterized in that: The needle body clamping portion (4) is provided with a plurality of groups of fixing clips (19) for fixing the wing plates on both sides of the blood collection needle body (2), and each two groups of the fixing clips (19) fix one blood collection needle body (2) and make it correspond to the safety seat (1), and the fixing clip (19) is provided with a base (20), and the base (20) is hinged with a flip-up cover (21), and the flip-up cover (21) corresponds to the ejector pin (604).

3. The folding and pressing assembly device for the blood collection needle safety seat according to claim 1, characterized in that: The straightening device (9) comprises an upper clamping portion (24) and a lower clamping portion (25), the upper clamping portion (24) comprises a second base (26) and an upper alignment plate (27), the second base (26) is provided with a first cylinder (28) for driving the upper alignment plate (27) to move in a vertical direction, the clamping device (10) is provided with a plurality of groups of pressure heads (29), each group of pressure heads (29) can be driven by a second cylinder (30) at the top thereof to achieve vertical displacement, the second cylinder (30) being installed on the second base (26).

4. The folding and pressing assembly device for the blood collection needle safety seat according to claim 3, characterized in that: The lower clamping portion (25) is provided with a third base (31), and a support assembly (32) is provided above the third base (31). The support assembly (32) includes a bracket assembly (34) and a safety seat outer fork plate (35) for aligning the tail hose of the blood collection needle body (2). A first lifting cylinder (37) and a second lifting cylinder (36) are provided below the bracket assembly (34) and the safety seat outer fork plate (35) for vertical displacement.

5. The folding and pressing assembly device for the blood collection needle safety seat according to claim 4, characterized in that: The bracket assembly (34) comprises a support plate (38) and a lower alignment plate (39); the lower alignment plate (39) is provided with a groove cavity (40) for accommodating the upper alignment plate (27); the upper alignment plate (27) and the lower alignment plate (39) are respectively provided with a plurality of groups of first notches (41) cooperating with the upper seat (101) and the lower seat (103) to realize the alignment of the safety seat (1); the support plate (38) is provided with a plurality of groups of second notches (42) for accommodating the end of the safety seat (1); the second notches (42) cooperate with the pressing head (29) to realize the pressing of the safety seat (1).

6. The folding and pressing assembly device for the blood collection needle safety seat according to claim 5, characterized in that: The first notch (41) has a Y-shaped cross section, a slide rail assembly (43) is provided between the third base (31) and the support assembly (32), and the support assembly (32) can be pushed by the third cylinder (44) to achieve horizontal displacement.

7. The folding and pressing assembly device for the blood collection needle safety seat according to claim 6, characterized in that: The pressing assembly (8) is further provided with a clamping assembly (45) for clamping the tail hose of the blood collection needle body (2); the clamping assembly (45) is provided with a pneumatic gripper (46) corresponding to each group of the tail hose of the blood collection needle body (2); a propulsion cylinder (47) is provided at the rear end of the pneumatic gripper (46) to enable the pneumatic gripper (46) to move closer to or farther away from the tail of the blood collection needle body (2).

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