Automatic needle distributing mechanism for disposable blood taking needle cores

Abstract

The utility model discloses an automatic needle distributing mechanism for disposable blood taking needle cores, which comprises a needle distributing die, a needle distributing module, a stepping motor, a linear guide rail and a ball screw. The needle distributing module is installed on the two parallel linear guide rails on the lower portion and located over the needle distributing mold. The stepping motor is connected with the ball screw through the coupler, the ball screw is connected with the needle distributing module through the connecting piece, and the motor drives the needle distributing module to do reciprocating linear motion in the axial direction of the ball screw. The needle bin has the advantages that the needle bin is detachable, the needle core needs to be moved out of the needle bin baffle when added, and axial displacement and running-out of the stainless steel needle core in the needle bin can be effectively prevented. During needle distribution, the needle bin roller rubber ring is always pressed on the needle distribution mold, and the stainless steel needle core rolls to pass through an empty needle groove in the needle distribution mold and is filled in the needle groove. During resetting, the remaining stainless steel needle cores on the needle distributing mold can be recycled and separated from the needle distributing mold when the needle retracting and releasing supporting hook ascends. Needle cores are evenly distributed on the needle distributing mold at fixed intervals in order, and high efficiency and high yield are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of needle arrangement mechanism of medical instrument industry blood taking needle;Particularly, it is a kind of automatic disposable blood taking needle needle core automatic needle arrangement mechanism. BACKGROUND

[0002] Clinical experiment needs to use blood taking needle to carry out trace blood sampling to human skin distal microtrauma, now more using disposable blood taking needle, disposable blood taking needle is composed of needle handle and needle core two parts, needle handle is combined together with needle core by injection molding machine injection molding, before the injection molding to needle core, first the incoming material is a bunch of bunch of stainless steel needle core is evenly distributed to special needle arrangement board at fixed interval, subsequent needle arrangement board is evenly arranged neatly by special needle taking mechanism and is placed into bending mechanism or injection molding machine injection mold. SUMMARY

[0003] The utility model solves the technical problem to provide a kind of disposable blood taking needle needle core is evenly distributed neatly at fixed interval on needle arrangement mould, with the needle core automatic needle arrangement mechanism of high efficiency, high yield.

[0004] The technical scheme adopted by the utility model is a kind of disposable blood taking needle needle core automatic needle arrangement mechanism, including, needle arrangement mould, needle arrangement module, stepper motor, linear guide and ball screw;Linear guide is fixedly installed at the both sides of needle arrangement mould, needle arrangement module is installed on the two parallel linear guides below and is located directly above needle arrangement mould;Stepper motor is connected ball screw by connecting shaft, ball screw is parallel with linear guide, ball screw is connected with needle arrangement module by connecting piece, when driving stepper motor, motor drives needle arrangement module to repeat linear motion along the axial direction of ball screw.

[0005] The needle arrangement mould is provided with needle slot, and the opening of the needle slot faces upwards;The needle slot is multiple, and the interval and number of the needle slot are determined by the interval and number of the cavity of injection mold.

[0006] The needle arrangement module includes main support, linear sliding unit connected with main support, blocking module, limiting device and needle cartridge roller driving device;The main support is loaded with a group of detachable needle cartridges;The needle driving cylinder is installed on the linear sliding unit.

[0007] Each group of needle cartridges can be freely detached, and the needle cartridge is the cavity formed by needle cartridge bottom plate, roller support, needle holding hook and baffle;Roller transmission shaft is installed below the roller support, roller and roller rubber ring sleeved on the roller are installed on the transmission shaft, and the roller support is installed on the needle cartridge bottom plate.

[0008] The needle cartridge is placed with a stainless steel needle core, and a needle pressing code is placed above the stainless steel needle core to exert downward pressure on the stainless steel needle core.

[0009] The baffle is a needle cartridge cover plate, and the fixing knob is fixed through the baffle.

[0010] The needle cartridge roller driving device comprises a stepping motor, a speed reducer, a mounting plate, an inductive sheet and a driving shaft.

[0011] The limiting device has four groups, and the L-shaped component in the limiting device is connected with the main support through an adjusting bolt, so as to limit the retraction and extension positions of the needle collecting and releasing driving cylinder.

[0012] The linear slide is installed between the needle cartridge bottom plate and the needle collecting and releasing hook, and the needle collecting and releasing hook moves up and down along the linear slide to complete the needle collecting and releasing action.

[0013] The needle cartridge is detachable, and the needle core needs to be removed from the baffle, so that the axial stringing and running out of the stainless steel needle core in the needle cartridge can be effectively prevented.

[0014] When the needles are arranged, the needle cartridge roller rubber ring is always pressed on the needle arranging mold, and when the stainless steel needle core rolls through the empty needle groove on the needle arranging mold, it will be filled into the needle groove.

[0015] When the needle is reset, the needle collecting and releasing hook will recover the remaining stainless steel needle core on the needle arranging mold and separate from the needle arranging mold.

[0016] The needle cores are uniformly arranged on the needle arranging mold at fixed intervals, and have high efficiency and high yield. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is an overall structure axial view of the present application;

[0018] Figure 2 It is an axial view of the needle arranging module;

[0019] Figure 3 It is an axial view of the driving device for driving the needle cartridge roller to rotate;

[0020] Figure 4 It is a schematic diagram of needle arrangement when the needle is collected;

[0021] Figure 5 It is a schematic diagram of the needle cartridge;

[0022] Figure 6 The schematic diagram of the needle arrangement state;

[0023] Figure 7 The schematic diagram of the enlarged needle arrangement.

[0024] In the figure:

[0025] 1. Needle arrangement mold 2. Needle arrangement mold set 3. Step motor 4. Linear guide rail 5. Ball screw. DETAILED DESCRIPTION

[0026] The utility model will be further explained in detail in combination with the drawings and specific embodiments:

[0027] As Figure 1 shown, the utility model discloses a stainless steel blood taking needle core automatic needle arrangement mechanism, including a set of needle arrangement mold set 2, and the needle arrangement mold set 2 is installed on the two parallel linear guide rails 4 below and is located just above the needle arrangement mold; the step motor 3 is connected with the ball screw 5 through the connecting shaft, and the ball screw is parallel with the linear guide rail 4, and the nut on the ball screw 5 is installed on the connecting piece of the needle arrangement mold set, so that the driving step motor 5 can drive the needle arrangement mold set 2 to move linearly along the axial direction of the ball screw 5 repeatedly.

[0028] The needle arrangement mechanism also includes the needle arrangement mold 1 below the needle arrangement mold set, and a plurality of needle grooves 101 are processed at fixed intervals on the needle arrangement mold using the slow wire processing technology, all needle groove openings are arranged upwards, and the needle groove interval and quantity are determined by the injection mold cavity interval and quantity.

[0029] As Figure 2 shown, the needle arrangement mold set 2 includes the main support 21, and the main support is loaded with four groups of detachable needle boxes 26, linear sliding units 22, blocking mold sets 24, limiting devices 25 and needle box roller driving devices 27; the needle collecting and releasing driving cylinder 23 is installed on the linear sliding unit 22, and it should be noted that each group of needle boxes can be independently detached.

[0030] As Figure 4 shown, the needle box 26 includes the needle box bottom plate 260, the needle collecting and releasing hook 266, the needle pressing code 265, the roller 267, the roller rubber ring 264, the roller transmission shaft 263, the linear slider 268, the roller support 261, the baffle 269 and the baffle fixed knob 262.

[0031] As Figure 6 and Figure 7As shown, the roller rubber ring 264 is installed on the roller 267, the roller 267 is installed on the roller transmission shaft 263, the roller transmission shaft 263 is installed on the roller support 261, the roller support 261 is installed on the needle cartridge bottom plate 260, and the roller transmission shaft 263 is driven by the needle cartridge roller driving device 27; after the needle cartridge is loaded, the needle cartridge roller rubber ring 264 is pressed on the cloth needle mold 1.

[0032] The needle pressing code 265 is placed in the needle cartridge, and the needle pressing code 265 is taken out when the needle cartridge is taken out and the stainless steel needle core is added; after the stainless steel needle core is added, the needle pressing code 265 needs to be placed back, and the function is to apply downward pressure to the stainless steel needle core 270 below.

[0033] The baffle 269 is the cover plate of the needle cartridge, and the outermost stainless steel cover plate; before adding the needle core and taking out the needle pressing code, two baffle fixing knobs 262 need to be loosened, then the baffle 269 can be removed, and after the needle core is added and the needle pressing code is placed back, the baffle 269 needs to be covered back and the baffle fixing knobs 262 are tightened. The function is to prevent the stainless steel needle core in the needle cartridge from being axially staggered and running out.

[0034] As shown in the figure, Figure 5 The linear slide 268 is installed between the needle cartridge bottom plate 260 and the needle taking and placing hook 266, so that under the action of the needle taking and placing driving cylinder 23 above the needle cartridge, the needle taking and placing hook 266 moves up and down along the linear slide to complete the action of taking and placing the needle. The needle cartridge is detachable, and when the stainless steel needle core is used up and needs to be taken out and refilled, the needle cartridge needs to be moved when taken out and placed. The needle taking and placing driving cylinder 23 is installed on the linear sliding unit 22, and when it is slid to the right side, the needle cartridge can be taken out and placed, and when it is slid to the left side, it can be engaged with the needle taking and placing hook 266 on the needle cartridge.

[0035] As shown in the figure, Figure 3 The needle cartridge roller driving device 27 is composed of a stepping motor 80, a speed reducer 81, a mounting plate 82, an inductive sheet 83, a driving shaft 84 and the like. The inductive sheet 83 is installed on the driving shaft 84 for positioning the rotation angle of the driving shaft. The driving shaft 84 is connected with the needle cartridge roller transmission shaft 263 in a concave-convex manner. The driving shaft 84 drives the needle cartridge roller transmission shaft 263 to rotate by rotating the stepping motor 80.

[0036] The blocking device 24 is driven by a cylinder, and the function is to prevent the air compressor gas source from being interrupted. After the gas is stopped or leaked, the driving cylinder above the needle cartridge is connected with the needle taking and placing hook 266, which freely descends under the action of gravity to release the stainless steel needle core.

[0037] The needle taking and placing limiting device 25 is composed of four groups of L-shaped parts and adjusting bolts, which are used to limit the retraction and extension positions of the needle taking and placing driving cylinder 23.

[0038] Principle of the utility model:

[0039] The needle bin is in the initial state as shown Figure 4 The needle bin roller rotates clockwise at a constant speed under the action of the driving motor, the needle-retracting driving cylinder 23 drives the needle-retracting hook 266 to move downward, at this time, the stainless steel needle cores 270 in the needle bin move downward under the action of their own gravity and the pressure of the needle-pressing code 265, as shown in Figure 6 Figure 7 shown, some stainless steel needle cores are in flat contact with the needle mold 1, then the needle module 2 starts to move to the left at a constant speed under the drive of the stepping motor 3, the needle bin roller also moves to the left while rotating clockwise, because the rubber ring 264 of the needle bin roller is always pressed on the needle mold 1, so the rubber ring 264 of the needle bin roller drives the stainless steel needle cores of the needle mold 1 to roll to the left side of the needle mold 1, when the stainless steel needle cores roll through the empty needle grooves on the needle mold 1, they will be filled into the needle grooves, because only one stainless steel needle core can be accommodated in one needle groove, so the remaining stainless steel needle cores on the needle mold 1 will continue to roll to the left under the drive of the rubber ring, to fill the next needle groove, until the empty needle grooves on the needle mold 1 are all filled, the stepping motor 3 that drives the needle module 2 to move to the left stops running, then the needle-retracting driving cylinder resets to drive the needle-retracting hook 266 to move upward, when the needle-retracting hook 266 moves upward, it will recover and separate the remaining stainless steel needle cores on the needle mold 1 from the needle mold 1, at this time, only the stainless steel needle cores in the needle grooves on the needle mold 1, after the needle-retracting hook 266 returns to the position, the stepping motor 3 moves to the right, the needle module 2 returns to the initial position, then the stepping motor 3 stops, completing one needle setting cycle, when the subsequent work station takes away the stainless steel needle cores in the needle grooves of the needle mold 1, the next needle setting cycle can continue.

[0040] It is worth pointing out that the protection scope of the utility model is not limited to the above-mentioned specific example mode, according to the basic technical concept of the utility model, basically the same structure can also be used to achieve the purpose of the utility model, as long as the ordinary skilled in the art can think of the implementation mode without creative labor, all belong to the protection scope of the utility model.

Claims

1. A disposable blood lancet needle core automatic needle placement mechanism, characterized in that, Including, cloth needle mold (1), cloth needle mold group (2), stepper motor (3), linear guide (4) and ball screw (5); The linear guide (4) is fixedly installed on both sides of cloth needle mold (1), cloth needle mold group (2) is installed on the below two parallel linear guides (4) and is located directly above cloth needle mold;Stepper motor (3) is connected ball screw (5) through connecting shaft, ball screw (5) is parallel with linear guide (4), ball screw (5) is connected with cloth needle mold group (2) through connecting piece, when driving stepper motor (3), motor drives cloth needle mold group (2) along the axial repeated linear motion of ball screw (5).

2. The automatic needle setting mechanism for the disposable blood taking needle according to claim 1, characterized in that, The needle slot (101) is opened in the cloth needle mold (1), and the needle slot opening faces upwards;The needle slot (101) is multiple, and the interval and number of the needle slot are determined by the interval and number of the cavity of the injection mold.

3. The automatic needle loading mechanism for a lancet according to claim 1, wherein The cloth needle mold group (2) includes a main support (21), a linear sliding unit (22) connected to the main support (21), a blocking module (24), a limiting device (25) and a needle cartridge roller driving device (27). The main support (21) is loaded with four groups of detachable needle cartridges (26). The needle collecting and releasing driving cylinder (23) is installed on the linear sliding unit (22).

4. The automatic needle setting mechanism for a lancet according to claim 3, wherein The needle cartridge (26) is four groups, each group of needle cartridge can be freely detached, the needle cartridge (26) is the cavity formed by the needle cartridge bottom plate (260), the roller support (261), the needle collecting and releasing hook (266) and the baffle (269). The roller support (261) is installed below the roller transmission shaft (263), the transmission shaft is installed with the roller (267) and the roller rubber ring (264) sleeved on the roller (267), and the roller support (261) is installed on the needle cartridge bottom plate (260).

5. The automatic needle loading mechanism for a lancet according to claim 3, wherein The stainless steel needle core (270) is placed in the needle cartridge (26), and the needle pressing code (265) is placed above the stainless steel needle core. The needle pressing code exerts downward pressure on the stainless steel needle core (270) below.

6. The automatic needle loading mechanism for a lancet according to claim 4, wherein The baffle (269) is a needle cartridge cover plate, which is fixed by the baffle fixing knob (262).

7. The automatic needle loading mechanism for a lancet according to claim 3, wherein The needle cartridge roller driving device (27) includes a driving stepper motor (80), a speed reducer (81), a mounting plate (82), an inductive sheet (83) and a driving shaft (84). The inductive sheet (83) on the driving shaft (84) is used to position the rotation angle of the driving shaft. The driving shaft (84) is connected with the needle cartridge roller transmission shaft (263), and the driving stepper motor (80) rotates to drive the needle cartridge roller transmission shaft (263) to rotate.

8. The automatic needle loading mechanism for a lancet according to claim 3, wherein There are four groups of limiting devices (25), and the L-shaped member in the limiting device is connected with the main support (21) through adjusting bolt, which is used to limit the retraction and extension position of the needle collecting and releasing driving cylinder (23).

9. The automatic needle loading mechanism for a lancet according to claim 4, wherein The linear slider (268) is installed between the needle cartridge bottom plate (260) and the needle collecting and releasing hook (266), and the needle collecting and releasing hook moves up and down along the linear slider to complete the actions of needle collecting and releasing.

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