Die structure of blood taking needle seat

Abstract

The die structure comprises a left forming die, a sliding block base and a material receiving assembly arranged below the left forming die, an inner cavity of the sliding block base is slidably connected with two symmetrically-arranged cavity sliding blocks, and the sides, facing the left forming die, of the two cavity sliding blocks are provided with cavities used for forming the threaded end of the needle base; and an inner cavity of the sliding block base is slidably connected with a sliding block ejector rod which is driven by a power mechanism to abut against the cavity sliding block, and the inner cavity of the sliding block base is fixedly connected with a rail rod. According to the die structure of the blood taking needle base, the threaded end of the needle base can be effectively protected, the surface cannot be scratched during die stripping, then a product in one hole corresponds to a set of sliding blocks, the corresponding sliding block cavity is replaced when the hole is damaged, a die is easy to maintain in the later period, the service life of the die is longer, the machining precision of a single set of sliding blocks is higher, and the production efficiency is improved. The sliding block is not prone to dislocation, and the risk of liquid leakage during blood sampling is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of blood collection needle seat moulds, in particular to a mould structure of a blood collection needle seat. Background Art

[0002] A lancet is a medical blood collection device. In the related art, lancets include disposable lancets and reusable lancets. A disposable lancet can only be fired once, while a reusable lancet can be fired multiple times.

[0003] The existing blood collection needle thread seat mold has multiple thread cavities processed on the same set of sliders. The thin molding parts make the entire slider easy to be damaged. During the product production process, the slider molding parts are easily misaligned, resulting in product defects such as flash. When the blood collection needle thread seat is used for blood collection, there is a risk of leakage when multiple blood collection tubes are used for blood collection. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a mold structure for a blood collection needle holder, which solves the above-mentioned problems.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a mold structure of a blood collection needle seat, comprising a left molding die, a slider seat and a material receiving assembly arranged at the bottom, the inner cavity of the slider seat is slidably connected to two symmetrically arranged cavity sliders, the two cavity sliders are provided with a cavity for molding the threaded end of the needle seat on the side facing the left molding die, the inner cavity of the slider seat is slidably connected to a slider ejection rod driven by a power mechanism to abut against the cavity slider, the inner cavity of the slider seat is fixedly connected to a track rod, the surface of the cavity slider is provided with a track groove slidably connected to the track rod, the inner cavity of the slider seat is provided with an inclined surface parallel to the track groove, and the side edge of the cavity slider is provided with an abutting surface abutting against the inclined surface, when the injection molding is completed and the mold is opened, the left The molding mold moves to the left and stops after moving halfway. At this time, half of the needle seat is located in the left molding mold. Then the slider ejector rod pushes the cavity slider along the track groove on the slider seat to open the slider, and the track groove limits the maximum displacement distance of the track rod until the slider is opened enough for the product to be demolded. At this time, the threaded end of the needle seat is exposed, and then the left molding mold moves to the left and the needle seat is ejected by the ejector pin, which can effectively protect the threaded end of the needle seat and will not scratch the surface when demolding. Then one-hole product corresponds to a group of sliders. If any hole is damaged, the corresponding slider cavity is replaced. The mold is easy to repair later and has a longer mold life. A single set of sliders is processed with higher precision, and the slider is not easy to be misaligned, reducing the risk of leakage during blood collection.

[0006] As a further solution of the present invention: a plurality of slider seats are provided, and each of them corresponds one-to-one to the cavity in the left molding die.

[0007] As a further solution of the present invention: the material receiving assembly includes a material receiving box arranged below the left forming mold and the sliding block seat, the top of the material receiving box is fixedly connected to a material receiving rack, the inner cavity of the material receiving rack is respectively provided with open grooves and material drop grooves that are interconnected from top to bottom, and the inner cavity of the material receiving box is rotatably connected to a material discharge conveyor belt driven by a motor.

[0008] As a further solution of the present invention: the opening groove is a trapezoidal groove that is larger at the top and smaller at the bottom, and the blanking groove is a rectangular groove with the same width as the minimum width of the opening groove. The needle seat can be quickly guided by the opening groove that is larger at the top and smaller at the bottom, and then falls into the blanking groove along the trapezoidal groove and is transported downward.

[0009] As a further solution of the present invention: the surface of the discharge conveyor belt is provided with a plurality of evenly arranged inner grooves for accommodating the needle seat, and the positions of the inner grooves correspond one by one to the positions of the blanking troughs. The needle seat in each blanking trough can accurately fall into the inner grooves, and then be separated and output by the discharge conveyor belt.

[0010] As a further solution of the present invention: the inner cavity of the blanking trough is provided with a receiving groove, and the inner cavity of the receiving groove is rotatably connected to a grinding belt driven by a motor. Two grinding belts are provided, and are respectively arranged on both sides of the blanking trough close to the inner wall of the blanking trough. When the needle seat is dropped through the blanking trough, the conveying effect is adjusted by the rotation direction of the two grinding belts. The needle seat is driven to rotate by clockwise rotation on the right side and counterclockwise rotation on the left side to grind the water outlet and burrs on its surface. After grinding, the two grinding belts on the right side rotate counterclockwise and the grinding belt on the left side rotates clockwise to output the needle seat to the lower discharge conveyor belt for output. The needle seats ejected from the mold are conveyed separately to prevent damage caused by collision with each other, and the burrs can be automatically processed to output the finished product in one time.

[0011] As a further solution of the present invention: the right side of the material receiving box is connected to a blowing hopper connected to the fan, and the left side of the material receiving box is connected to a debris collection box through a filter. Air is discharged through the blowing hopper to blow the internal debris into the debris collection box, and the side edge of the needle seat is blocked by the filter and continues to be transported through the discharge conveyor belt.

[0012] As a further solution of the present invention: a guide frame is fixedly connected to the top of the material receiving frame, and the fallen needle seats are separated one by one by the guide frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention can effectively protect the threaded end of the needle seat, and will not scratch the surface when demolding. Then, one hole product corresponds to a group of sliders. If any hole is damaged, the corresponding slider cavity is replaced. The mold is easy to repair later, and the mold life is longer. A single group of sliders is processed with higher precision, and the sliders are not easy to be misplaced, which reduces the risk of leakage during blood collection.

[0015] 2. The present invention can transport the needle seats out of the mold separately to prevent them from being damaged by collision, and can automatically process burrs and output finished products at one time.

[0016] 3. The present invention uses the blowing hopper to blow air to blow the internal debris into the debris collection box, and the side of the needle seat is blocked by the filter screen and continues to be transported through the discharge conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the demoulding state of the present invention;

[0019] Figure 3 It is a structural side view of the material receiving assembly of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the slider seat of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the slider seat of the present invention in the demoulding state.

[0022] In the figure: 1. left forming mold; 2. slider seat; 3. cavity slider; 4. track rod; 5. track groove; 6. slider ejector rod; 7. cavity; 8. material receiving box; 9. material receiving rack; 10. air blower; 11. filter screen; 12. debris collection box; 13. guide rack; 14. opening groove; 15. material drop chute; 16. receiving groove; 17. grinding belt; 18. material discharge conveyor belt; 19. inner groove. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] See also Figure 1-5The present invention provides a technical solution: a mold structure of a blood collection needle seat, comprising a left molding die 1, a slider seat 2 and a material receiving assembly arranged at the bottom, the inner cavity of the slider seat 2 is slidably connected with two symmetrically arranged cavity sliders 3, the two cavity sliders 3 are provided with a cavity 7 for molding the threaded end of the needle seat toward the side of the left molding die 1, the inner cavity of the slider seat 2 is slidably connected with a slider ejection rod 6 driven by a power mechanism to abut against the cavity slider 3, the inner cavity of the slider seat 2 is fixedly connected with a track rod 4, the surface of the cavity slider 3 is provided with a track groove 5 slidably connected with the track rod 4, the inner cavity of the slider seat 2 is provided with an inclined surface parallel to the track groove 5, and the side of the cavity slider 3 is provided with an abutting surface abutting against the inclined surface, when the injection molding is completed and the mold is opened, the left molding die 1 moves to the left The mold 1 moves to the left and stops after it moves halfway. At this time, half of the needle seat is located in the left molding mold 1. Then the slider ejector rod 6 pushes the cavity slider 3 along the track groove 5 on the slider seat 2 to move and open the slider, and the track groove 5 limits the maximum displacement distance of the track rod 4 until the slider is opened enough for the product to be demolded. At this time, the threaded end of the needle seat is exposed, and then the left molding mold 1 moves to the left, and the needle seat is ejected by the ejector pin, which can effectively protect the threaded end of the needle seat and will not scratch the surface when demolding. Then one hole product corresponds to a group of sliders. If any hole is damaged, the corresponding slider cavity is replaced. The mold is easy to repair later and has a longer mold life. A single group of sliders is processed with higher precision, and the slider is not easy to be misaligned, reducing the risk of leakage during blood collection.

[0025] There are multiple slider seats 2 , and each of them corresponds one-to-one to the cavity in the left molding die 1 .

[0026] The material receiving assembly includes a material receiving box 8 arranged below the left forming mold 1 and the slider seat 2. The top of the material receiving box 8 is fixedly connected to a material receiving rack 9. The inner cavity of the material receiving rack 9 is respectively provided with an open groove 14 and a material drop groove 15 that are interconnected from top to bottom. The inner cavity of the material receiving box 8 is rotatably connected to a discharge conveyor belt 18 driven by a motor.

[0027] The opening slot 14 is a trapezoidal slot that is larger at the top and smaller at the bottom, and the blanking slot 15 is a rectangular slot with the same width as the minimum width of the opening slot 14. The needle seat can be quickly guided by the opening slot 14 that is larger at the top and smaller at the bottom, and then fall into the blanking slot 15 along the trapezoidal slot and transported downward.

[0028] The surface of the discharge conveyor belt 18 is provided with a plurality of evenly arranged inner grooves 19 for accommodating the needle seats. The positions of the inner grooves 19 correspond one to one with the positions of the blanking troughs 15. The needle seats in each blanking trough 15 can fall accurately into the inner grooves 19 and then be separated and output by the discharge conveyor belt 18.

[0029] The inner cavity of the blanking trough 15 is provided with a receiving groove 16, and the inner cavity of the receiving groove 16 is rotatably connected to a grinding belt 17 driven by a motor. Two grinding belts 17 are provided, and are respectively provided on both sides of the blanking trough 15 close to the inner wall of the blanking trough 15. When the needle seat is dropped through the blanking trough 15, the conveying effect is adjusted by the rotation direction of the two grinding belts 17. The needle seat is driven to rotate by clockwise rotation on the right side and counterclockwise rotation on the left side to grind the water outlet and burrs on its surface. After grinding, the two grinding belts 17 on the right side rotate counterclockwise and the grinding belt 17 on the left side rotates clockwise to output the needle seat to the discharge conveyor belt 18 below for output. The needle seats discharged from the mold are separately conveyed to prevent damage caused by collision with each other, and the burrs can be automatically processed to output the finished product at one time.

[0030] The right side of the material receiving box 8 is connected to a blowing hopper 10 connected to the fan, and the left side of the material receiving box 8 is connected to a debris collection box 12 through a filter screen 11. Air is discharged through the blowing hopper 10 to blow the internal debris into the debris collection box 12, and the side of the needle seat is blocked by the filter screen 11 and continues to be transported through the discharge conveyor belt 18.

[0031] The top of the receiving frame 9 is fixedly connected with a guide frame 13, through which the fallen needle seats are separated one by one.

[0032] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A mold structure for a blood collection needle holder, comprising a left molding die (1), a slider seat (2) and a material receiving assembly arranged below, characterized in that: The inner cavity of the slider seat (2) is slidably connected to two symmetrically arranged cavity sliders (3), and the two cavity sliders (3) are provided with a cavity (7) for molding the threaded end of the needle seat on one side facing the left molding die (1). The inner cavity of the slider seat (2) is slidably connected to a slider ejection rod (6) driven by a power mechanism to abut against the cavity slider (3). The inner cavity of the slider seat (2) is fixedly connected to a track rod (4), and the surface of the cavity slider (3) is provided with a track groove (5) slidably connected to the track rod (4). The inner cavity of the slider seat (2) is provided with an inclined surface parallel to the track groove (5), and the side of the cavity slider (3) is provided with an abutting surface abutting against the inclined surface.

2. The mold structure of a blood collection needle holder according to claim 1, characterized in that: A plurality of slider seats (2) are provided, and each of them corresponds one-to-one to the mold cavity in the left molding die (1).

3. The mold structure of a blood collection needle holder according to claim 1, characterized in that: The material receiving assembly comprises a material receiving box (8) arranged below the left forming die (1) and the slider seat (2); the top of the material receiving box (8) is fixedly connected to a material receiving frame (9); the inner cavity of the material receiving frame (9) is provided with mutually communicating opening grooves (14) and material drop grooves (15) from top to bottom; the inner cavity of the material receiving box (8) is rotatably connected to a material discharge conveyor belt (18) driven by a motor.

4. The mold structure of a blood collection needle holder according to claim 3, characterized in that: The opening groove (14) is a trapezoidal groove that is larger at the top and smaller at the bottom, and the blanking groove (15) is a rectangular groove with a width that is the same as the minimum width of the opening groove (14).

5. The mold structure of a blood collection needle holder according to claim 3, characterized in that: The surface of the discharge conveyor belt (18) is provided with a plurality of evenly arranged inner grooves (19) for accommodating the needle seat, and the positions of the inner grooves (19) correspond one to another with the positions of the blanking trough (15).

6. The mold structure of a blood collection needle holder according to claim 3, characterized in that: The inner cavity of the blanking trough (15) is provided with a receiving groove (16), and the inner cavity of the receiving groove (16) is rotatably connected to a grinding belt (17) driven by a motor. Two grinding belts (17) are provided and are respectively arranged on both sides of the blanking trough (15) tightly against the inner wall of the blanking trough (15).

7. The mold structure of a blood collection needle holder according to claim 3, characterized in that: The right side of the material receiving box (8) is connected to a blowing hopper (10) connected to a fan, and the left side of the material receiving box (8) is connected to a debris collection box (12) through a filter screen (11).

8. The mold structure of a blood collection needle holder according to claim 3, characterized in that: The top of the material receiving frame (9) is fixedly connected with a guide frame (13), and the fallen needle seats are separated one by one by the guide frame (13).

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