All-plastic drip-proof self-suction quantitative suction pipe and injection molding structure thereof

Abstract

The utility model discloses an all-plastic drip-proof self-suction quantitative suction pipe and an injection molding structure thereof. The all-plastic drip-proof self-suction quantitative suction pipe comprises an upper connecting pipe, a middle connecting pipe and a lower self-suction pipe, the suction capacity of the lower self-suction pipe is large, the liquid suction through holes are formed in the side face of the lower self-suction pipe, the positions of the liquid suction through holes are set to be different positions of the lower self-suction pipe according to the capacity, and when sucked liquid reaches the liquid suction through holes and blocks the liquid suction through holes, liquid suction is stopped; at the moment, when the whole straw is erected, the upper connecting pipe and the middle connecting pipe are in a closed and non-ventilated state, so that liquid is not easy to drip, the liquid suction through hole determines the liquid suction capacity on one hand and prevents the liquid from dripping on the other hand, and the structural design is ingenious; if the liquid suction through hole is still formed in the upper connecting pipe, liquid is very easy to drip when the whole suction pipe is erected, and liquid suction fails.

Description

Technical Field

[0001] The utility model relates to a full-plastic drip-proof self-priming quantitative straw and an injection molding structure thereof. Background Art

[0002] At present, when collecting liquids in hospitals and other medical departments, a straw is needed to collect the liquid quantitatively. Figure 1 As shown, the existing liquid collection straw generally includes an air sac 91, a connecting tube 92, and a capillary 93. The connecting tube 92 is connected to the lower side of the air sac 91, and a capillary 93 is inserted at the lower end of the connecting tube 92. The capillary 93 is a glass tube, and an air hole 911 is opened on the air sac 91. In this way, the purpose of automatic liquid collection is achieved through the automatic liquid suction of the capillary 93. During the manufacturing process of the above structure, the air sac 91 and the connecting tube 92 are an integrated structure, which is formed by blow molding of a polymer material, and then a capillary 93 is inserted into the lower end of the connecting tube 92 by gluing. It is a trace collection, and the diameter of the capillary 93 is very thin. Therefore, the processing of the capillary 93 is difficult, the process requirements are high, the yield is low, and there is a risk of breakage when the capillary 93 is inserted into the connecting tube 92. The installation is relatively cumbersome. At the same time, the air bag 91 and the connecting tube 92 are blow-molded as one, and the stability of the product specifications is poor. In addition, when a large volume of liquid is sucked, the length and diameter of the straw are generally lengthened. However, due to the large volume of the sucked liquid, the liquid drips out due to its own weight when the straw is in a vertical state. Therefore, the structure needs to be improved. Utility Model Content

[0003] In view of the deficiencies of the above-mentioned prior art, the problem solved by the utility model is: to provide a drip-proof, one-step-molded, simple to manufacture, efficient, injection moldable, large-scale batch-produced, all-plastic drip-proof self-priming quantitative straw and its injection molding structure, which has stable structural dimensions.

[0004] In order to solve the above problems, the technical solution adopted by the utility model is as follows:

[0005] A fully plastic drip-proof self-priming quantitative straw comprises an upper connecting tube, a middle connecting tube and a lower self-priming tube; the upper connecting tube, the middle connecting tube and the lower self-priming tube are sequentially connected from top to bottom, and the upper connecting tube, the middle connecting tube and the lower self-priming tube are an integrally formed structure; the upper connecting tube, the middle connecting tube and the lower self-priming tube are all made of hydrophilic polymer materials and are prepared by injection molding; the upper end of the upper connecting tube is closed; and a liquid suction through hole is provided on the upper side of the lower self-priming tube.

[0006] Furthermore, the upper end of the upper connecting pipe is sealed by hot melting to form a sealed edge, and an anti-slip pattern is provided on the sealed edge.

[0007] Furthermore, injection-molded connecting wings are provided on both sides of the upper connecting pipe.

[0008] Furthermore, strip reinforcement ribs are respectively provided on both sides of the lower self-suction pipe.

[0009] Furthermore, the upper connecting pipe is a flat structure.

[0010] Furthermore, the upper connecting pipe has a conical structure that is larger at the top and smaller at the bottom.

[0011] The invention discloses an injection molding structure of a full-plastic drip-proof self-priming quantitative drinking straw. A plurality of the self-priming quantitative drinking straws are distributed in a row structure and are connected by injection molding connecting wings.

[0012] The beneficial effects of the utility model are as follows:

[0013] 1. The suction capacity of the lower self-priming tube of the utility model is relatively large, so a liquid suction through hole is opened on the side of the lower self-priming tube. The position of the liquid suction through hole is set at different positions of the lower self-priming tube according to the capacity. When the sucked solution reaches the liquid suction through hole and blocks the liquid suction through hole, the liquid suction stops; at this time, when the entire straw is erected, since the upper connecting tube and the middle connecting tube are in a closed and airtight state, it is not easy for liquid to drip out. This liquid suction through hole determines the liquid suction capacity on the one hand, and prevents liquid from dripping out on the other hand, and the structural design is ingenious; if the liquid suction through hole is still opened at the upper connecting tube, it is very easy for liquid to drip out when the entire straw is erected, resulting in liquid suction failure.

[0014] 2. The upper connecting tube, the middle connecting tube and the lower self-priming tube of the utility model are integrally formed by an injection molding process, and the entire structure is made of hydrophilic polymer materials, without the need for subsequent processing of capillary glass tubes and complex processes such as bonding. In this way, the utility model greatly improves the preparation efficiency and can be quickly mass-produced. The upper end of the upper connecting tube is designed to be open during injection molding, and the upper connecting tube is sealed after demolding, overcoming the traditional technical barriers that cannot be injected.

[0015] 3. When the utility model sucks liquid, the lower end of the lower self-suction tube is tilted to contact the liquid to be collected, and the liquid will automatically enter the lower self-suction tube, and the liquid will stop when it reaches the liquid suction hole, realizing automatic liquid suction, and then the collected liquid is discharged by squeezing the upper connecting tube, which is very convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the prior art.

[0017] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0018] Figure 3It is a schematic diagram of the longitudinal sectional structure of the utility model.

[0019] Figure 4 It is a schematic structural diagram of a plurality of self-priming quantitative suction pipes arranged in a row according to the utility model.

[0020] The accompanying drawings of the utility model are marked as: upper connecting pipe-1, middle connecting pipe-2, lower self-suction pipe-3, liquid suction through hole-31, edge sealing-11, anti-slip pattern-12, injection-molded connecting wing-13, strip reinforcement rib-32. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0022] like Figures 2 to 4 As shown, a fully plastic drip-proof self-priming quantitative suction pipette comprises an upper connecting pipe 1, a middle connecting pipe 2, and a lower self-priming pipe 3; the upper connecting pipe 1, the middle connecting pipe 2, and the lower self-priming pipe 3 are sequentially connected from top to bottom, and the upper connecting pipe 1, the middle connecting pipe 2, and the lower self-priming pipe 3 are an integrally formed structure; the upper connecting pipe 1, the middle connecting pipe 2, and the lower self-priming pipe 3 are all made of hydrophilic polymer materials and are prepared by injection molding; the upper end of the upper connecting pipe 1 is closed; and a liquid suction through hole 31 is provided on the upper side of the lower self-priming pipe 3. The diameters or widths of the upper connecting pipe 1, the middle connecting pipe 2, and the lower self-priming pipe 3 decrease sequentially.

[0023] like Figures 2 to 4 As shown, in order to facilitate sealing of the upper end of the upper connecting tube 1 and increase the anti-slip performance, the upper end of the upper connecting tube 1 is further sealed by hot melting to form a sealed edge 11, and the sealed edge 11 is provided with an anti-slip pattern 12.

[0024] like Figures 2 to 4 As shown, in order to facilitate large-scale injection molding and improve processing convenience, further, injection molding connecting wings 13 are provided on both sides of the upper connecting pipe 1.

[0025] like Figures 2 to 4 As shown, in order to improve the stability of the lower self-priming pipe 3, further, strip reinforcement ribs 32 are respectively provided on both sides of the lower self-priming pipe 3. Further, the upper connecting pipe 1 is a flat structure. Further, the upper connecting pipe 1 is a conical structure with a larger upper portion and a smaller lower portion.

[0026] like Figure 4 As shown, an injection molding structure of a fully plastic drip-proof self-priming quantitative straw is shown, wherein a plurality of the self-priming quantitative straws are arranged in a row and connected by injection molding connecting wings 13 .

[0027] like Figures 2 to 4As shown, an injection molding method of an all-plastic drip-proof self-priming quantitative straw, the steps are as follows: injecting a hydrophilic polymer material into a plurality of continuous flow channels of a mold, cooling and shaping to form an upper connecting tube 1, a middle connecting tube 2, and a lower self-priming tube 3 that are connected from top to bottom, the upper end of the upper connecting tube 1 is open, the core is pulled out and demolded from the upper end opening of the upper connecting tube 1, the entire self-priming quantitative straw is taken out, the upper end opening of the upper connecting tube 1 is sealed by hot-melt welding, and finally a liquid suction through hole 31 is opened on the upper side of the lower self-priming tube 3.

[0028] The suction capacity of the lower self-suction tube 3 of the utility model is relatively large, so a suction hole 31 is opened on the side of the lower self-suction tube 3, and the position of the suction hole 31 is set at different positions of the lower self-suction tube 3 according to the capacity setting. When the sucked solution reaches the suction hole 31 and blocks the suction hole 31, the suction stops; at this time, when the whole straw is erected, since the upper connecting tube 1 and the middle connecting tube 2 are in a closed and airtight state, it is not easy for liquid to drip out. This suction hole 31 determines the suction capacity on the one hand, and prevents liquid from dripping out on the other hand, and the structural design is ingenious; if the suction hole 31 is still opened at 1 of the upper connecting tube, liquid is very likely to drip out when the whole straw is erected, resulting in suction failure.

[0029] The upper connecting tube 1, the middle connecting tube 2, and the lower self-priming tube 3 of the utility model are integrally formed by an injection molding process, and the entire structure is made of hydrophilic polymer materials, without the need for subsequent processing of capillary glass tubes and complex processes such as bonding. In this way, the utility model greatly improves the preparation efficiency and can be quickly mass-produced. The upper end of the upper connecting tube 1 is designed to be open during injection molding, and the upper connecting tube 1 is sealed after demolding, which overcomes the traditional technical barriers that cannot be injected.

[0030] When the utility model sucks liquid, the lower end of the lower self-sucking tube 3 is tilted to contact the liquid to be collected, and the liquid will automatically enter the lower self-sucking tube 3, and the direct liquid stops at the liquid suction through hole 31 to realize automatic liquid suction, and then the collected liquid is discharged by squeezing the upper connecting tube 1, which is very convenient and quick to use.

[0031] 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 principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fully plastic drip-proof self-priming quantitative straw, characterized in that: It includes an upper connecting pipe, a middle connecting pipe, and a lower self-priming pipe; the upper connecting pipe, the middle connecting pipe, and the lower self-priming pipe are connected in sequence from top to bottom, and the upper connecting pipe, the middle connecting pipe, and the lower self-priming pipe are an integrated molding structure; the upper connecting pipe, the middle connecting pipe, and the lower self-priming pipe are all made of hydrophilic polymer materials and are prepared by injection molding; the upper end of the upper connecting pipe is closed; and a liquid suction through hole is provided on the upper side of the lower self-priming pipe.

2. The all-plastic drip-proof self-priming quantitative drinking straw according to claim 1 is characterized in that: The upper end of the upper connecting pipe is sealed by hot melting to form a sealed edge, and an anti-slip pattern is provided on the sealed edge.

3. The all-plastic drip-proof self-priming quantitative drinking straw according to claim 1 is characterized in that: Injection-molded connecting wings are arranged on both sides of the upper connecting pipe.

4. The all-plastic drip-proof self-priming quantitative drinking straw according to claim 1, characterized in that: Strip reinforcement ribs are respectively arranged on both sides of the lower self-suction pipe.

5. The all-plastic drip-proof self-priming quantitative drinking straw according to claim 1 is characterized in that: The upper connecting pipe is a flat structure.

6. The all-plastic drip-proof self-priming quantitative drinking straw according to claim 1, characterized in that: The upper connecting pipe is in a conical structure with a larger upper portion and a smaller lower portion.

7. An injection molding structure of a fully plastic drip-proof self-priming quantitative drinking straw according to claim 3, characterized in that: The plurality of self-priming quantitative suction tubes are distributed in a row structure, and are connected by injection-molded connecting wings.

Images