CN217226542U - Blood taking needle sheath forming die - Google Patents
Blood taking needle sheath forming die Download PDFInfo
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- CN217226542U CN217226542U CN202123341492.5U CN202123341492U CN217226542U CN 217226542 U CN217226542 U CN 217226542U CN 202123341492 U CN202123341492 U CN 202123341492U CN 217226542 U CN217226542 U CN 217226542U
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Abstract
The utility model discloses a blood taking needle sheath forming die, include injection template, cooling template, thermal-insulated template, cope match-plate pattern, shaping template, the lower bolster that from the top down set gradually, be provided with the injection orifice on the injection template, the cooling template thermal-insulated template with it leads gluey hole and third to be provided with first gluey hole of leading, second on the cope match-plate pattern and leads gluey hole, the injection orifice, first gluey hole, second lead to glue hole and third and lead and communicate each other between the gluey hole, the cope match-plate pattern with be provided with between the shaping template and hold gluey room, be equipped with on the lower surface of cope match-plate pattern and inlay the needle, be equipped with on the shaping template with inlay the corresponding shaping groove of needle. In the production process of the blood taking needle sheath, the rubber material flows into the rubber containing chamber through the rubber guide hole and enters the forming groove from the rubber containing chamber, the space of the rubber containing chamber is small, the rubber material mainly flows longitudinally, the lateral pressure on the inserted needle is reduced, and the yield of products is improved.
Description
Technical Field
The utility model relates to a forming die field, concretely relates to blood taking needle sheath forming die.
Background
For a specific patient, a blood sampling test is required to understand the cause of the pathology, blood sampling can determine the content of certain substances in blood, can determine serum enzymes, lipids, electrolytes and liver functions, etc., can search for pathogens in blood, can be used for blood gas analysis, etc. The blood sampling of the blood taking needle generally needs to be matched with a vacuum blood sampling tube for use, when the blood taking needle leaves a factory, two ends of the blood taking needle are respectively connected with a needle, when the blood is taken, the needle at one end is inserted into a human body, after the needle with the blood taking needle protective sleeve at the other end penetrates through the protective sleeve, the needle is inserted into the vacuum blood sampling tube, and the blood is taken under the action of negative pressure of the blood sampling tube. When needs carry out multinomial test to the patient, medical personnel often need once only draw multicell blood, during the blood sampling, one tub of back that finishes of taking will have the needle of sheath one end to extract from the heparin tube, and the sheath kick-backs fast and seals the blood sampling needle, changes the heparin tube after, and the blood sampling needle punctures the sheath again and inserts the intraductal continuation blood sampling of heparin tube. In order to prevent blood coagulation, deterioration, bacteria contamination and the like in the blood collection process, the blood collection needle has high requirements on the sealing property of the blood collection needle sheath before delivery, and factors influencing the sealing property of the blood collection needle sheath mainly include eccentricity of an inner hole of the sheath, thickness deviation of a puncture part and the like.
When the existing blood taking needle sheath is produced, firstly, rubber and other components forming the blood taking needle sheath are placed in an internal mixer and an open mill for mixing to form mixed rubber, then the mixed rubber is placed in an upper die and a lower die, rubber materials flow along a die cavity through die assembly at high temperature and high pressure, then the die cavity is filled, and a blood taking needle sheath product is formed in a product forming cavity. Firstly, when the rubber material is produced in the presence of high pressure, the rubber material can generate great lateral pressure on an insert pin on an upper template when flowing transversely because the rubber material flows transversely and longitudinally in a die cavity, and because the diameter of the insert pin on the upper template is 1.0mm and the length of the insert pin is 20mm, and the high pressure during production is over hundred tons, when the product is produced for a long time, the pin can bend laterally, so that the inner hole of the product is eccentric, and great influence is generated on the quality of the product; secondly, during long-term production, the needle breakage condition is increased, and the reject ratio is greatly improved; thirdly, after the mould is closed, the sizing material flows under pressure to cause the phenomena of uneven hardness and sizing material of the product, and the like, so that the thickness deviation of the product is large, and the total length of the product has a large tolerance (+/-0.3 mm).
Disclosure of Invention
An object of the utility model is to overcome the defect that prior art exists, a blood taking needle sheath forming die is provided, including the injection template that sets gradually from the top down, the cooling template, thermal-insulated template, the cope match-plate pattern, the shaping template, the lower bolster, at the injection template, the cooling template, set up the injection hole on thermal-insulated template and the cope match-plate pattern respectively, first lead gluey hole, the second leads gluey hole and third and leads gluey hole, the injection hole, first lead gluey hole, the second leads to glue hole and third and leads to communicate each other between the gluey hole, be provided with between cope match-plate pattern and the shaping template and hold gluey room, be equipped with on the lower surface of cope match-plate pattern and inlay the corresponding shaping groove of needle on the shaping template. When the blood taking needle sheath is produced, the rubber compound is injected from the injection hole, under the action of high pressure, the rubber compound flows into the forming groove along the insert needle, the probability of the transverse flow of the rubber compound is greatly reduced, the rate of defective products can be greatly reduced, and during vulcanization forming, under the action of the cooling template, the rubber in the rubber guide hole can still keep a lower temperature, and the product cannot be damaged.
In order to realize the above-mentioned purpose, the utility model provides a blood taking needle sheath forming die, a serial communication port, injection template, chill plate, cope match-plate pattern, shaping template, lower bolster including from the top down set gradually, be provided with the injection orifice on the injection template, the chill plate the heat-proof template with it leads gluey hole to be provided with first glue hole, second on the cope match-plate pattern and leads gluey hole and third respectively, the injection orifice, first glue hole, second lead to glue hole and third and lead and communicate each other between the gluey hole, the cope match-plate pattern with be provided with between the shaping template and hold gluey room, be equipped with on the lower surface of cope match-plate pattern and inlay the corresponding shaping groove of needle.
Further preferably, the central axes of the injection hole, the first glue guiding hole, the second glue guiding hole and the third glue guiding hole are in the same straight line.
According to a further preferable technical scheme, the cooling template is provided with a plurality of glue guide grooves and a plurality of first glue guide holes, the input ends of the glue guide grooves are located right below the injection holes, and the output ends of the glue guide grooves are communicated with the first glue guide holes. The second glue guide hole is located right below the first glue guide hole, and the third glue guide hole is located right below the second glue guide hole.
The further preferred technical scheme is that the input ends of the plurality of glue guide grooves form cylindrical grooves or prismatic grooves.
According to a further preferable technical scheme, a condensation pipe is arranged inside the cooling template.
A further preferred technical scheme is that the glue containing chamber is an accommodating space formed between the upper template and the forming template.
Further preferably, the diameter of the upper end surface of the injection hole is larger than that of the lower end surface.
According to a further preferable technical scheme, the diameter of the upper end face of the third glue guiding hole is larger than that of the lower end face.
Adopt the utility model discloses a when blood taking needle sheath forming die carries out the production of blood taking needle sheath, at first prepare equipment earlier, the mould carries out the compound die earlier, carries out the mode locking under equipment pressure. The injection head of the equipment is aligned with the injection hole of the injection template, the glue stock is injected into the mold after pressurization, the glue stock enters the glue containing chamber under the action of the guide hole, the glue stock in the glue containing chamber enters the molding groove along the space between the insert pin and the molding groove, and after the glue stock is filled, the mold is heated to enable the glue stock to be vulcanized and molded. In the production process of the blood taking needle sheath, the rubber material flows into the rubber containing chamber through the rubber guide hole and enters the forming groove from the rubber containing chamber, the space of the rubber containing chamber is small, and the rubber material mainly flows longitudinally, so that the generated transverse pressure is small, and the influence on the inserted needle and the product is small. The technical scheme is that a condenser pipe is arranged in the cooling template, and the existence of the condenser pipe enables the rubber material in the injection hole and the rubber guide hole to still keep a lower temperature and not to be damaged by high temperature, so that on one hand, raw materials can be saved, the production of products is guaranteed, and on the other hand, the yield of the products can be improved.
In a further preferred technical scheme, a plurality of glue guide grooves are formed in the cooling template, the input ends of the glue guide grooves are located right below the injection holes, and the output ends of the glue guide grooves are communicated with the first glue guide holes. The input ends of the glue guide grooves form cylindrical grooves or square grooves. The second glue guide hole is located right below the first glue guide hole, and the third glue guide hole is located right below the second glue guide hole. After the rubber material is injected into the injection template through the injection hole, under the action of the first rubber guide hole of the rubber guide groove of the cooling template, the rubber compound is dispersed and is respectively guided into the rubber containing chamber of the forming template from a plurality of channels, the rubber material in the rubber containing chamber flows along the inner wall of the forming groove, and finally vulcanization forming is carried out.
The utility model has the advantages and the beneficial effects that:
1. in the production process of the blood taking needle sheath, the rubber material flows into the rubber containing chamber through the rubber guide hole and enters the forming groove from the rubber containing chamber, the space of the rubber containing chamber is small, the rubber material mainly flows longitudinally, the lateral pressure on the insert needle can be reduced, and the yield of products is improved.
2. During high-temperature vulcanization, the existence of the cooling template enables the rubber material in the injection hole and the rubber guide hole to still keep a lower temperature and not to be damaged by high temperature, so that on one hand, raw materials can be saved, the production of products is guaranteed, and on the other hand, the yield of the products can be improved.
Drawings
Fig. 1 is a schematic view of a stacking structure of embodiment 1 of the present invention.
Fig. 2 is a schematic view of a stacking structure in embodiment 2 of the present invention.
Fig. 3 is a surface structure view of a cooling mold plate according to embodiment 2 of the present invention.
In the figure: 1. injecting a template; 2. cooling the template; 3. a heat insulation template; 4. mounting a template; 5. forming a template; 6. a lower template; 7. an injection hole; 8. a first glue guiding hole; 9. a second glue guiding hole; 10. a third glue guiding hole; 11. a condenser tube; 12. a cylindrical groove; 13. a glue guiding groove; 14. a glue containing chamber; 15. inserting a needle; 16. and (7) forming a groove.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 1, a blood taking needle sheath forming die, include injection template 1 that from the top down set gradually, cooling template 2, thermal-insulated template 3, cope match-plate pattern 4, forming template 5, lower bolster 6, be provided with injection orifice 7 on the injection template 1, cooling template 2, be provided with first glue guide hole 8 on thermal-insulated template 3 and the cope match-plate pattern 4 respectively, glue hole 9 and third are led to the second, be provided with condenser pipe 11 in the cooling template 2, first glue guide hole 8 is located injection orifice 7 under, glue hole 9 is led to the second is located first glue guide hole 8 under, glue hole 10 is led to the third is located second and leads glue hole 9 under. The diameter of the upper end face of the third glue guiding hole 10 is larger than that of the lower end face. A glue containing chamber 14 is arranged between the upper template 4 and the forming template 5, and the glue containing chamber is an accommodating space formed between the upper template 4 and the forming template 5. The lower surface of the upper template 4 is provided with an insert pin 15, and the forming template 5 is provided with a forming groove 16 corresponding to the insert pin 15. The diameter of the upper end surface of the injection hole 7 is larger than that of the lower end surface.
Example 2
As shown in fig. 2 and 3, a blood taking needle sheath forming die, include injection template 1 that sets gradually from the top down, cooling template 2, thermal-insulated template 3, cope match-plate pattern 4, forming template 5, lower bolster 6, be provided with injection orifice 7 on the injection template 1, cooling template 2, be provided with first glue guide hole 8 on thermal-insulated template 3 and the cope match-plate pattern 4 respectively, second glue guide hole 9 and third glue guide hole 10, be provided with condenser tube 11 in the cooling template 2, be provided with cylindrical recess 12 and four glue guide grooves 13 on the cooling template 2, cylindrical recess 12 is linked together with four glue guide grooves 13, and four glue guide grooves 13 evenly distributed are around cylindrical recess, cylindrical recess 12 is located injection orifice 7 under, the output of glue guide groove 13 leads glue guide hole 8 intercommunication with first. The second glue guiding hole 9 is located right below the first glue guiding hole 8, and the third glue guiding hole 10 is located right below the second glue guiding hole 9. The diameter of the upper end face of the third glue guiding hole 10 is larger than that of the lower end face. A glue containing chamber 14 is arranged between the upper template 4 and the forming template 5, and the glue containing chamber is an accommodating space formed between the upper template 4 and the forming template 5. The lower surface of the upper template 4 is provided with an insert pin 15, and the forming template 5 is provided with a forming groove 16 corresponding to the insert pin 15. The diameter of the upper end face of the injection hole 7 is larger than that of the lower end face.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a blood taking needle sheath forming die, its characterized in that includes injection template, chill plate, thermal-insulated template, cope match-plate pattern, shaping template, the lower bolster that from the top down set gradually, be provided with the injection orifice on the injection template, the chill plate thermal-insulated template with it leads gluey hole and third to be provided with first leading gluey hole, second on the cope match-plate pattern and leads gluey hole, the injection orifice, first leading gluey hole, second lead gluey hole and third and lead and communicate each other between the gluey hole, the cope match-plate pattern with be provided with the room of holding gluey between the shaping template, be equipped with on the lower surface of cope match-plate pattern and inlay the corresponding shaping groove of needle on the shaping template.
2. The forming die of claim 1, wherein central axes of the injection hole, the first glue guide hole, the second glue guide hole and the third glue guide hole are on the same straight line.
3. The forming die of claim 1, wherein the cooling template is provided with a plurality of glue guide grooves and a plurality of first glue guide holes, an input end of each glue guide groove is positioned right below the injection hole, an output end of each glue guide groove is communicated with the first glue guide hole, the second glue guide hole is positioned right below the first glue guide hole, and the third glue guide hole is positioned right below the second glue guide hole.
4. The forming die of claim 3, wherein the input ends of the plurality of glue guide grooves form cylindrical grooves or prismatic grooves.
5. The forming die according to any one of claims 1 to 4, wherein a condenser pipe is provided inside the cooling template.
6. The molding die as claimed in claim 5, wherein the glue containing chamber is a receiving space formed between the upper mold plate and the molding mold plate.
7. The molding die according to claim 6, wherein the diameter of the upper end surface of the injection hole is larger than the diameter of the lower end surface.
8. The forming die of claim 7, wherein the diameter of the upper end surface of the third glue guiding hole is larger than that of the lower end surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123341492.5U CN217226542U (en) | 2021-12-28 | 2021-12-28 | Blood taking needle sheath forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123341492.5U CN217226542U (en) | 2021-12-28 | 2021-12-28 | Blood taking needle sheath forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217226542U true CN217226542U (en) | 2022-08-19 |
Family
ID=82826895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123341492.5U Active CN217226542U (en) | 2021-12-28 | 2021-12-28 | Blood taking needle sheath forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217226542U (en) |
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2021
- 2021-12-28 CN CN202123341492.5U patent/CN217226542U/en active Active
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