CN111690526B - Virus sampling tube and forming die thereof - Google Patents

Abstract

The utility model relates to a virus sampling pipe and forming die thereof relates to the field of medical supplies, and its forming die includes first round platform, the second round platform, third round platform and fourth round platform, is provided with mouth of pipe mould and unloads the pipe mould on the first round platform, is provided with rotatory clamping device and discharge apparatus on unloading the pipe mould, is provided with the pipe moulding-die on the second round platform, is provided with the lid mouth mould on the third round platform and unloads the lid mould, is provided with rotatory clamping device and discharge apparatus on unloading the lid mould, is provided with the lid moulding-die on the fourth round platform, is provided with multiunit mouth of pipe mould and unloads the pipe mould on the first round platform, is provided with multiunit lid mouth mould and unloads the lid mould on the third round platform. According to the pipe unloading device, the pipe orifice die and the cover orifice die are used for respectively pushing the formed pipe body and the formed cover body into the pipe unloading die and the cover unloading die, the pipe body and the cover body are rotationally demolded through the rotary clamping mechanism, the pipe body and the cover body are fed through the discharging device, the purpose of conveniently demolding the formed threaded pipe body and the cover body is achieved, and the pipe unloading die and the cover unloading die are provided with a plurality of groups, so that single-batch production is improved.

Description

Virus sampling tube and forming die thereof

Technical Field

The application relates to the field of medical supplies, in particular to a virus sampling tube and a forming die thereof.

Background

The virus sampling tube is a microorganism sampling and conveying tube for sampling and conveying viruses such as influenza virus, hand-foot-mouth virus and the like, and is also called a centrifuge tube and a specimen conveying tube. The virus sampling tube is generally composed of a sterile sampling tube and a tube cover, and a sampling swab which is independently packaged and used for collecting biological samples is additionally arranged, wherein 2-5ml of virus preservation solution is pre-filled in the sterile sampling tube. The using method of the virus sampling tube is as follows: the user needs to open the sampling swab packaging bag firstly, hold the end part of the swab to collect biological samples, then open the tube cover of the sampling tube, probe the swab head into the virus preservation solution in the sampling tube, break the swab rod, and finally cover the cover of the sampling tube for preservation or transportation.

The virus sampling tube is usually formed by connecting a tube body and a cover body in a threaded manner, the tube body and the cover body are formed by adopting one-time injection molding, and threads are formed on the tube body and the cover body after injection molding is finished, so that the formed tube body and cover body are difficult to adopt a conventional pushing type demolding process, and the processing efficiency of the sampling tube is definitely reduced.

Disclosure of Invention

In order to solve the problem that the demoulding of the threaded pipe body and the cover body is inconvenient, the application provides a virus sampling pipe and a forming die thereof.

In a first aspect, the present application provides a virus sampling tube forming mold, which adopts the following technical scheme:

a virus sampling tube forming die comprises a tube forming die and a cover forming die;

the pipe body forming die comprises a first round table and a second round table, the side walls adjacent to the first round table and the second round table are respectively provided with a pipe orifice die and a pipe pressing die, the first round table is provided with a pipe unloading die adjacent to the pipe orifice die, the pipe orifice die is provided with a pipe wall groove, the pipe pressing die is provided with a pipe orifice groove coaxial with the pipe wall groove, the pipe pressing die is provided with a pipe spiral groove on the cambered surface groove wall of the pipe orifice groove, and the pipe pressing die is coaxially fixedly connected with a pipe column on the bottom wall of the pipe orifice groove; after the pipe orifice die is abutted with the pipe pressing die, a pipe body injection cavity is formed among the pipe wall groove, the pipe orifice groove and the pipe forming pipe column, and one end of the pipe orifice die, which is far away from the pipe pressing die, is provided with a pipe injection port communicated with the pipe wall groove;

the pipe unloading die is provided with a pipe unloading groove, a rotary clamping device is arranged on the cambered surface groove wall of the pipe unloading groove, the bottom wall of the pipe unloading groove is provided with a discharging device, and the pipe unloading groove and the pipe orifice groove are positioned on a concentric circle of the axis of the first round platform;

the cover body forming die comprises a third round table and a fourth round table, a cover opening die and a cover pressing die are respectively arranged on the side walls, close to the third round table and the fourth round table, of the cover body forming die, a cover unloading die, close to the cover opening die, is arranged on the third round table, a cover wall groove is formed in the cover opening die, a convex ring is fixedly connected onto the bottom wall of the cover wall groove in an integrated manner, the free end of the convex ring is in a closing-in shape, a conical groove is coaxially formed in the free end of the convex ring, and the flaring end of the conical groove is positioned on the free end of the convex ring;

the pressing ring is fixedly connected with a pressing ring which is coaxial with the convex ring, a cover spiral groove is coaxially formed in the peripheral wall of the pressing ring, the inner wall of the pressing ring, which is close to one end of the pressing ring, is in a closing-in shape, the inner wall of the pressing ring is coaxially fixedly connected with a frustum, and the tip of the frustum deviates from the pressing ring and is coaxially fixedly connected with a push rod; after the cover mouth die is abutted with the cover pressing die, a cover body injection cavity is formed among the cover wall groove, the convex ring, the compression ring, the conical groove, the conical table and the ejector rod, and a cover injection port communicated with the cover wall groove is formed at one end of the cover mouth die, which is far away from the cover pressing die;

the cover unloading mold is provided with a cover unloading groove, the cover unloading mold is provided with the rotary clamping device on the cambered surface groove wall of the cover unloading groove, the cover unloading mold is provided with the discharging device on the bottom wall of the cover unloading groove, and the cover unloading groove and the cover wall groove are positioned on the concentric circle of the axis of the third round platform; the first round table is provided with a plurality of groups of pipe orifice dies and pipe unloading dies, and the third round table is provided with a plurality of groups of cover orifice dies and cover unloading dies.

By adopting the technical scheme, when the pipe body is injection molded, the first round table and the second round table are driven to be close to each other so as to enable the pipe orifice die to be abutted against the pipe pressing die, high-pressure molten plastic is injected into the pipe injection cavity through the pipe injection port, pressure is maintained and rapid cooling is carried out, then the second round table is driven to be far away from the first round table, the molded pipe body is separated from the pipe wall groove of the pipe orifice die, but is in threaded connection with the pipe spiral groove of the pipe pressing die, then the second round table is driven to rotate, so that the molded pipe body is aligned with the pipe unloading groove of the pipe unloading die, the second round table is driven to be close to the first round table so that the molded pipe body is inserted into the pipe unloading groove, the molded pipe body is clamped and rotated through the rotary clamping device, meanwhile, the second round table is gradually far away from the first round table, the rotary clamping device is used for screwing down the pipe body from the pipe spiral groove of the pipe pressing die, and meanwhile the unloading device is used for pushing the molded pipe body out of the pipe unloading groove, and convenient demolding of the pipe body with spiral grooves is realized; and a plurality of pipe orifice dies and a pipe unloading die are arranged on the first round table, so that a plurality of pipe bodies with spiral lines can be simultaneously injection molded, and the production efficiency of the virus sampling pipe body is obviously improved.

When the cover body is injection molded, the third round table and the fourth round table are driven to be close to each other so as to enable the cover opening die to be abutted against the cover pressing die, high-pressure molten plastic is injected into the cover injection cavity through the cover injection molding opening, pressure is maintained and the cover injection cavity is rapidly cooled, then the fourth round table is driven to be far away from the third round table, the molded cover body is separated from a cover wall groove of the cover opening die, but is still in threaded connection with a cover spiral groove on the pressing ring, then the fourth round table is driven to rotate, the molded cover body is enabled to be aligned with a cover unloading groove of the cover unloading die, the fourth round table is driven to be close to the third round table so that the molded cover body is inserted into the cover unloading groove, the molded cover body is clamped and rotated through the rotary clamping device, meanwhile, the fourth round table is gradually far away from the third round table, and the rotary clamping device rotates the cover body out of the cover spiral groove of the pressing ring, and meanwhile the discharging device pushes the molded cover body out of the cover unloading groove, and convenient demolding of the cover body with spiral lines is achieved; and a plurality of groups of cover mouth molds and cover unloading molds are arranged on the third round table, so that a plurality of cover bodies with spiral lines can be simultaneously injection molded, and the production efficiency of the cover bodies of the virus sampling tube is obviously improved.

Preferably, the rotary clamping device comprises an annular sinking table arranged on the wall of the pipe unloading groove or the wall of the opening end of the cover unloading groove, a main ring and an auxiliary ring are coaxially connected in the sinking table in a rotating manner, a rubber ring with built-in compressed air is connected between the main ring and the auxiliary ring, a top table protruding out of the pipe unloading mold or the cover unloading mold is fixedly connected to one side, far away from the main ring, of the auxiliary ring, the main ring and the auxiliary ring are axially and slidably connected, and a driving mechanism for driving the main ring and the auxiliary ring to synchronously rotate is arranged on the pipe unloading mold or the cover unloading mold.

By adopting the technical scheme, when the pipe pressing die or the cover pressing die drives the formed pipe body or the formed cover body to be inserted into the pipe unloading groove or the cover unloading groove, the pipe pressing die or the cover pressing die is abutted with the top platform and pushes the top platform to drive the auxiliary ring to approach the main ring, the rubber ring is compressed to expand and deform, and the pipe body or the cover body in the pipe unloading groove or the cover unloading groove can be stably clamped, so that when the driving mechanism drives the main ring and the auxiliary ring to synchronously rotate, the pipe body or the cover body clamped by the rubber ring can be driven to synchronously rotate, and the pipe body or the cover body can be screwed off from the pipe spiral groove or the cover spiral groove; in the process that the driving mechanism drives the main ring and the auxiliary ring to rotate, the first round table or the third round table is gradually far away from the second round table or the fourth round table, and the pipe pressing die or the cover pressing die gradually releases the pressing state of the opposite pressing table, so that the expanded rubber ring is gradually restored until the rubber ring is restored to the initial state, at the moment, the static friction force between the rubber ring and the pipe body or the cover body is smaller, and the pipe body or the cover body can be smoothly pushed out of the pipe discharging groove or the cover discharging groove by the discharging device.

The rubber ring filled with compressed air is used for clamping the pipe body or the cover body, so that the rubber ring can ensure enough clamping force to the pipe body or the cover body, the outer wall of the pipe body or the outer wall of the cover body cannot be damaged, and the pipe body or the cover body is automatically clamped and automatically released by the rubber ring along with the approach and the separation of the second round table or the fourth round table, so that the structure of the rotary clamping mechanism is greatly simplified, and the use and the maintenance are more convenient.

Preferably, the outer edge of the main ring is integrally fixedly connected with a main retaining wall, the outer edge of the auxiliary ring is integrally fixedly connected with an auxiliary retaining wall attached to the inner wall of the main retaining wall, a plurality of sliding grooves along the axial direction of the main retaining wall are formed in the inner wall of the main retaining wall, and a plurality of sliding strips matched with the sliding grooves in a sliding mode are fixedly connected on the outer wall of the auxiliary ring.

By adopting the technical scheme, when the top platform drives the auxiliary ring to approach the main ring under the pushing action of external force, the sliding strips on the auxiliary retaining wall slide in the sliding grooves on the main retaining wall, on one hand, the main retaining wall and the auxiliary retaining wall can limit the rubber ring after compression and expansion, so that the deformation of the rubber ring faces to the axial direction as much as possible, and the effective clamping of the pipe body or the cover body is ensured; on the other hand, the sliding strip is embedded in the sliding groove, so that the main ring and the auxiliary ring can be ensured to rotate stably and synchronously, and the pipe body or the cover body can be ensured to rotate stably and driven.

Preferably, the driving mechanism comprises a toothed ring coaxially fixedly connected to the outer peripheral wall of the main annular cambered surface, and the pipe unloading die or the cover unloading die is rotationally connected with a driven gear in meshed connection with the toothed ring, and a plurality of driven gears are in synchronous transmission connection.

Through adopting above-mentioned technical scheme, synchronous drive a plurality of slave gear rotations, it is rotatory to drive the ring gear when the slave gear is rotatory, and then drives the main ring rotation, can realize the synchronous drawing of patterns operation of a plurality of body or lid, and production efficiency is higher.

Preferably, the discharging device comprises a discharging plate which is elastically arranged on the bottom wall of the tube discharging groove or the bottom wall of the cover discharging groove, an elastic piece is arranged between the discharging plate and the bottom wall of the tube discharging groove or the bottom wall of the cover discharging groove, one end of the elastic piece is fixedly connected with the discharging plate, and the other end of the elastic piece is fixedly connected with the tube discharging groove or the bottom wall of the cover discharging groove.

Through adopting above-mentioned technical scheme, when body or lid are pushed into and unload the piping chute or unload the lid groove, body or lid promotes the stripper towards unloading piping chute or unload the lid tank bottom wall and be close to, and the elastic component is compressed and is produced deformation, when rotatory clamping device releases the centre gripping to body or lid, and elastic component deformation force pushes out in body or lid self-discharging piping chute or the unloading lid groove, has realized the automatic discharge operation of discharge device to body or lid, and the structure is simpler, and efficiency is higher.

Preferably, the pipe pressing die is provided with an annular groove coaxial with the pipe orifice groove, and the annular groove is communicated with the pipe orifice groove and is adjacent to the pipe spiral groove.

Through adopting above-mentioned technical scheme, have the protruding edge that approaches the spiral line on the body after the shaping to can realize the lock after body and the lid threaded connection.

Preferably, the pipe orifice die is coaxially and fixedly connected with a bottom circular table at the bottom wall of the pipe wall groove, a bottom cone groove is coaxially formed at the free end of the bottom circular table, the flaring end of the bottom cone groove deviates from the bottom wall of the pipe wall groove, and a bottom cone matched with the bottom cone groove is integrally and fixedly connected at the free end of the pipe column.

By adopting the technical scheme, the conical section extends from the bottom wall of the formed tube body, so that the test sample can be fully immersed in the culture solution of the tube body.

Preferably, the free end of the ejector rod is provided with a plurality of sheet grooves, and the sheet grooves are axially arranged along the ejector rod and tangential to concentric circles of the ejector rod.

By adopting the technical scheme, the formed cover body is provided with the slot for fixing/positioning the test specimen, and is provided with a plurality of fins for clamping the head end of the test specimen.

In a second aspect, the present application provides a viral sampling tube according to the following technical solution:

a virus sampling tube is manufactured based on the virus sampling tube forming die and comprises a tube part and a cover part which are in threaded connection, a positioning column is coaxially fixedly connected to the inner bottom wall of the cover part, one end, close to the inner bottom wall of the cover part, of the positioning column is smoothly arranged, the free end of the positioning column is arranged along the axial direction of the cover part in a taper mode, the outer diameter, close to the inner bottom wall of the cover part, of the positioning column is larger than the outer diameter of the free end of the positioning column, and a slot for inserting a test sample is formed in the middle of the positioning column.

Through adopting above-mentioned technical scheme, after pipe portion and the threaded connection of lid, pipe portion inner wall and reference column outer wall butt, pipe portion outer wall are contradicted with lid inner arc wall, and the reference column free end is the tapering setting for clearance between reference column and the interior dado of lid reduces gradually until mild, and then the pipe portion is in the in-process of going deep into the lid with the conflict effort of lid grow gradually, thereby the connection between pipe portion and the lid is more stable firm, sealing performance is better; the middle of the positioning column is provided with the slot, so that unused test pieces can be stably inserted on the cover part to avoid the test pieces from being polluted, and meanwhile, after the test pieces are inserted into the tube part after sampling, the positioning column can also position the truncated test pieces to avoid the test pieces from excessively shaking at the tube part to lead the sampling ends of the test pieces to deviate from virus preservation solution, thereby ensuring the sampling accuracy of the virus sampling tube as far as possible.

Preferably, the pipe part is formed by integrally injection molding homo-PP plastic mixed with a PP transparent nucleating agent.

By adopting the technical scheme, the homo-PP plastic has better transparency and hardness, so that the pipe part after injection molding has higher transparency and hardness, the high visibility and high protectiveness of the virus sampling pipe are improved, the crystallinity of the formed PP plastic can be reduced by doping the PP transparent nucleating agent into the homo-PP plastic, the refractive index of the formed PP plastic is improved, and the transparency of the pipe part after molding is further improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the pipe body is driven by the pipe pressing die to extend into the pipe unloading die after injection molding is carried out between the pipe orifice die and the pipe pressing die, the pipe body is screwed off from the pipe pressing die by the rotary clamping device, the pipe body is pushed out of the pipe unloading die by the unloading device, and the plurality of groups of pipe orifice dies and the pipe pressing die are arranged on the first round table, so that injection molding and rotary demolding of a plurality of pipe bodies can be simultaneously realized, and the production efficiency is higher; in the same way, after the cover body is injection molded, injection molding and rotary demolding of a plurality of cover bodies are realized under the action of the corresponding rotary clamping device and the corresponding unloading device, so that the efficient production of the virus sampling tube is facilitated;

2. the pipe pressing die or the cover pressing die is abutted against the top table and pushes the top table to drive the auxiliary ring to approach the main ring, the rubber ring is compressed to expand and deform, and the pipe body or the cover body in the pipe unloading groove or the cover unloading groove can be stably clamped, so that when the driving mechanism drives the main ring and the auxiliary ring to synchronously rotate, the pipe body or the cover body clamped by the rubber ring can be driven to synchronously rotate, and the pipe body or the cover body is unscrewed from the pipe spiral groove or the cover spiral groove to realize effective rotary demoulding;

3. the rubber ring filled with compressed air is used for clamping the pipe body or the cover body, so that the rubber ring can ensure enough clamping force to the pipe body or the cover body, the outer wall of the pipe body or the outer wall of the cover body cannot be damaged, and the pipe body or the cover body is automatically clamped and automatically released by the rubber ring along with the approach and the separation of the second round table or the fourth round table, so that the structure of the rotary clamping mechanism is greatly simplified, and the use and the maintenance are more convenient.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a first round table, a pipe orifice die and a pipe unloading die according to the first embodiment of the present application;

FIG. 2 is a schematic view of the overall structure of a second boss and tube die according to the first embodiment of the present application;

FIG. 3 is a schematic view showing the overall structure of a third round table, a cap die and a cap removing die according to the first embodiment of the present application;

FIG. 4 is a schematic view showing the overall structure of a fourth round table and a cap stamper according to the first embodiment of the present application;

FIG. 5 is an enlarged schematic view of a portion A of FIG. 4;

FIG. 6 is a schematic view of a rotary clamping device and a discharge device according to a first embodiment of the present application;

FIG. 7 is a schematic overall structure of a second embodiment of the present application;

fig. 8 is a schematic cross-sectional view of a cap according to a second embodiment of the present application.

Reference numerals: 101. a first round table; 102. a second round table; 103. a pipe orifice die; 104. pipe press molding; 105. unloading a pipe die; 106. a pipe wall groove; 107. a pipe orifice groove; 108. a tube helical groove; 109. forming a tubular column; 110. a pipe unloading groove; 111. an annular groove; 112. a bottom round table; 113. a bottom cone groove; 114. a bottom cone; 201. a third round table; 202. a fourth round table; 203. covering a mouth mold; 204. a cover pressing mold; 205. a cover removing mould; 206. a cover wall groove; 207. a convex ring; 208. a conical groove; 209. a compression ring; 210. a cover spiral groove; 211. a frustum; 212. a push rod; 213. a cover removing groove; 214. a sheet groove; 3. a sinking platform; 4. a main ring; 5. a secondary ring; 6. a rubber ring; 7. a top platform; 8. a main retaining wall; 9. an auxiliary retaining wall; 10. a chute; 11. a slide bar; 12. a toothed ring; 13. a slave gear; 14. a stripper plate; 15. an elastic member; 16. a tube section; 17. a cover portion; 18. positioning columns; 19. a slot.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-8.

Example 1

The embodiment of the application discloses a virus sampling pipe forming die. Referring to fig. 1 and 2, the virus sampling tube forming mold includes a tube forming mold and a cover forming mold;

the pipe body forming die comprises a first round table 101 and a second round table 102, a pipe orifice die 103 and a pipe pressing die 104 are respectively arranged on the adjacent side walls of the first round table 101 and the second round table 102, a pipe unloading die 105 adjacent to the pipe orifice die 103 is arranged on the first round table 101, a pipe wall groove 106 is formed in the pipe orifice die 103, and a pipe injection molding opening (not shown in the figure) communicated with the pipe wall groove 106 is formed in one end, far away from the pipe pressing die 104, of the pipe orifice die 103; the pipe orifice die 103 is coaxially and fixedly connected with a bottom circular table 112 at the bottom wall of the pipe wall groove 106, a bottom cone groove 113 is coaxially arranged at the free end of the bottom circular table 112, and the flaring end of the bottom cone groove 113 is away from the bottom wall of the pipe wall groove 106.

Referring to fig. 2, a pipe orifice groove 107 coaxial with the pipe orifice groove 106 is formed on the pipe pressing die 104, a pipe spiral groove 108 is coaxially formed on the cambered surface groove wall of the pipe orifice groove 107 on the pipe pressing die 104, an annular groove 111 coaxial with the pipe orifice groove 107 is formed on the pipe pressing die 104, the annular groove 111 is communicated with the pipe orifice groove 107 and is adjacent to the pipe spiral groove 108, a pipe forming column 109 is coaxially and fixedly connected on the bottom wall of the pipe orifice groove 107 on the pipe pressing die 104, and a bottom cone 114 matched with the bottom cone groove 113 is integrally and fixedly connected at the free end of the pipe forming column 109; when the pipe orifice die 103 and the pipe pressing die 104 are abutted, a pipe body injection cavity is formed among the pipe wall groove 106, the pipe orifice groove 107 and the pipe forming column 109.

Referring to fig. 1, a tube unloading groove 110 is formed in a tube unloading mold 105, a rotary clamping device is arranged on the cambered surface groove wall of the tube unloading groove 110 in the tube unloading mold 105, a discharging device is arranged on the bottom wall of the tube unloading groove 110 in the tube unloading mold 105, and the tube unloading groove 110 and a tube orifice groove 107 are positioned on a concentric circle of the axis of a first round table 101; the first round table 101 is provided with a plurality of groups of pipe orifice dies 103 and pipe unloading dies 105, the pipe orifice dies 103 and the pipe unloading dies 105 are distributed in an equidistant circumferential array on the axis of the first round table 101, and the number of pipe orifice dies 104 on the second round table 102 is the same as the number of pipe orifice dies 103.

When a pipe body is injection molded, the first round table 101 and the second round table 102 are driven to be close to each other so as to enable the pipe orifice die 103 to be in butt joint with the pipe pressing die 104, PP plastic in a high-pressure molten state is injected into an injection cavity of the pipe body through a pipe injection port, pressure is maintained and rapid cooling is carried out, then the second round table 102 is driven to be far away from the first round table 101, and the molded pipe body is separated from a pipe wall groove 106 of the pipe orifice die 103 and is still in threaded connection with a pipe spiral groove 108 of the pipe pressing die 104; then the second round table 102 is driven to rotate, so that the formed pipe body is aligned with the pipe unloading groove 110 of the adjacent pipe unloading die 105, the second round table 102 is driven to approach the first round table 101 to enable the formed pipe body to be inserted into the pipe unloading groove 110, the formed pipe body is clamped and rotated through the rotary clamping device, meanwhile, the second round table 102 is gradually far away from the first round table 101, the rotary clamping device rotates the pipe body out of the pipe spiral groove 108 of the pipe pressing die 104, and meanwhile, the unloading device pushes the formed pipe body out of the pipe unloading groove 110, so that the pipe body with spiral lines can be conveniently and conveniently demoulded; in addition, the first round table 101 is provided with a plurality of groups of pipe orifice dies 103 and pipe unloading dies 105, so that a plurality of pipe bodies with spiral lines can be simultaneously injection molded, and the production efficiency of the virus sampling pipe body is remarkably improved.

Referring to fig. 3 and 4, the cover forming die includes a third round table 201 and a fourth round table 202, the side walls adjacent to the third round table 201 and the fourth round table 202 are respectively provided with a cover die 203 and a cover pressing die 204, the third round table 201 is provided with a cover unloading die 205 adjacent to the cover die 203, the cover die 203 is provided with a cover wall groove 206, the cover die 203 is integrally and fixedly connected with a convex ring 207 on the bottom wall of the cover wall groove 206, the free end of the convex ring 207 is in a closing-in shape, the free end of the convex ring 207 is coaxially provided with a conical groove 208, the flaring end of the conical groove 208 is positioned on the free end of the convex ring 207, and one end of the cover die 203 away from the cover pressing die 204 is provided with a cover injection molding opening (not shown in the figure) communicated with the cover wall groove 206.

Referring to fig. 4 and 5, a pressing ring 209 coaxial with the convex ring 207 is fixedly connected to the cover pressing die 204, a cover spiral groove 210 is coaxially formed in the peripheral wall of the pressing ring 209, the inner wall of the pressing ring 209 close to one end of the cover pressing die 204 is in a closed shape, a frustum 211 is coaxially fixedly connected to the inner wall of the pressing ring 209, the tip of the frustum 211 is deviated from the cover pressing die 204 and is coaxially fixedly connected with a push rod 212, a plurality of sheet grooves 214 are formed in the free end of the push rod 212, and the sheet grooves 214 are axially arranged along the push rod 212 and tangent to concentric circles of the push rod 212; after the cover die 203 and the cover pressing die 204 are abutted, a cover body injection cavity is formed among the cover wall groove 206, the convex ring 207, the pressing ring 209, the conical groove 208, the conical table 211 and the ejector rod 212.

Referring to fig. 3, a cover unloading groove 213 is formed in the cover unloading mold 205, a rotary clamping device is arranged on the cambered surface groove wall of the cover unloading groove 213 in the cover unloading mold 205, a discharging device is arranged on the bottom wall of the cover unloading groove 213 in the cover unloading mold 205, and the cover unloading groove 213 and the cover wall groove 206 are located on a concentric circle of the axis of the third round table 201; the third round table 201 is provided with a plurality of groups of cover dies 203 and cover-unloading dies 205, the plurality of cover dies 203 and the plurality of cover-unloading dies 205 are distributed in an equidistant circumferential array on the axis of the third round table 201, and the number of cover dies 204 on the fourth round table 202 is the same as the number of cover dies 203.

When the cover body is injection molded, the third round table 201 and the fourth round table 202 are driven to be close to each other so as to enable the cover mouth mold 203 to be in contact with the cover pressing mold 204, PP plastic in a high-pressure molten state is injected into an injection cavity of the cover body through the cover injection port, the pressure is maintained and the cover body is rapidly cooled, then the fourth round table 202 is driven to be far away from the third round table 201, and the molded cover body is separated from a cover wall groove 206 of the cover mouth mold 203 and is still in threaded connection with a cover spiral groove 210 on the pressing ring 209; then the fourth round table 202 is driven to rotate, so that the formed cover body is aligned with the cover discharging groove 213 of the cover discharging mold 205, the fourth round table 202 is driven to approach the third round table 201, so that the formed cover body is inserted into the cover discharging groove 213, the formed cover body is clamped and rotated through the rotary clamping device, meanwhile, the fourth round table 202 is gradually far away from the third round table 201, so that the rotary clamping device rotates the cover body from the cover spiral groove 210 of the compression ring 209, and meanwhile, the discharging device pushes the formed cover body out of the cover discharging groove 213, so that the convenience in demolding of the cover body with spiral patterns is realized; in addition, the third round table 201 is provided with a plurality of groups of cover mouth molds 203 and cover unloading molds 205, so that a plurality of cover bodies with spiral lines can be simultaneously injection molded, and the production efficiency of the virus sampling tube cover bodies is remarkably improved.

Referring to fig. 1 and 6, the rotary clamping device comprises an annular sinking platform 3 arranged on the wall of the open end of a pipe unloading groove 110 or a cover unloading groove 213, a main ring 4 and an auxiliary ring 5 are coaxially connected in the sinking platform 3 in a rotating manner, a rubber ring 6 with built-in compressed air is connected between the main ring 4 and the auxiliary ring 5, an annular top platform 7 protruding out of a pipe unloading die 105 or a cover unloading die 205 is fixedly connected to one side of the auxiliary ring 5 far away from the main ring 4, the main ring 4 and the auxiliary ring 5 are axially and slidably connected, an annular main protection wall 8 is integrally fixedly connected to the outer edge of the main ring 4, an annular auxiliary protection wall 9 attached to the inner wall of the main protection wall 8 is integrally fixedly connected to the outer edge of the auxiliary ring 5, a plurality of sliding grooves 10 along the axial direction of the main protection wall 8 are formed in the inner wall of the main protection wall, and a plurality of sliding strips 11 matched with the sliding grooves 10 in a sliding manner are fixedly connected to the outer wall of the auxiliary ring 5. A driving mechanism for driving the main ring 4 and the auxiliary ring 5 to synchronously rotate is arranged on the pipe unloading die 105 or the cover unloading die 205; the driving mechanism comprises a toothed ring 12 coaxially fixedly connected to the outer circumferential wall of the cambered surface of the main ring 4, and a driven gear 13 meshed with the toothed ring 12 is rotatably connected to the pipe unloading die 105 or the cover unloading die 205, and a plurality of driven gears 13 are connected in a same-motion transmission manner.

When the pipe pressing die 104 or the cover pressing die 204 drives the formed pipe body or the formed cover body to be inserted into the pipe unloading groove 110 or the cover unloading groove 213, the pipe pressing die 104 or the cover pressing die 204 is abutted against the top table 7 and pushes the top table 7 to drive the auxiliary ring 5 to approach the main ring 4, the sliding strip 11 on the auxiliary protecting wall 9 slides in the sliding groove 10 on the main protecting wall 8, the rubber ring 6 is compressed to expand and deform, the deformation of the rubber ring 6 faces the axial direction under the limiting action of the main protecting wall 8 and the auxiliary protecting wall 9, and therefore the pipe body or the cover body in the pipe unloading groove 110 or the cover unloading groove 213 can be stably clamped, and when the driving mechanism drives the main ring 4 and the auxiliary ring 5 to synchronously rotate, the pipe body or the cover body clamped by the rubber ring 6 can be synchronously rotated, so that the pipe body or the cover body is screwed off from the pipe spiral groove 108 or the cover spiral groove 210.

The plurality of slave gears 13 are synchronously driven to rotate, the toothed ring 12 is driven to rotate when the slave gears 13 rotate, the main ring 4 is driven to rotate, the sliding strips 11 are embedded in the sliding grooves 10, stable synchronous rotation of the main ring 4 and the auxiliary ring 5 can be ensured, stable driving rotation of a pipe body or a cover body is ensured, the main ring 4 drives the auxiliary ring 5 to rotate, in the process of rotating, the first round table 101 or the third round table 201 is gradually far away from the second round table 102 or the fourth round table 202, the pipe pressing die 104 or the cover pressing die 204 gradually releases the pressing state of the top table 7, the expanded rubber ring 6 is gradually restored under the pressure of compressed air in the pipe pressing die 104 or the cover pressing die 204 until the rubber ring is restored to the initial state, at the moment, static friction force between the rubber ring 6 and the pipe body or the cover body is small, and the unloading device can smoothly push the pipe body or the cover body out of the pipe unloading groove 110 or the cover unloading groove 213.

The rubber ring 6 filled with compressed air is used for clamping the pipe body or the cover body, so that the clamping force of the rubber ring 6 to the pipe body or the cover body is enough, damage to the outer wall of the pipe body or the outer wall of the cover body is avoided, and along with the approaching and the separating of the second round table 102 or the fourth round table 202, the automatic clamping and the automatic releasing of the rubber ring 6 to the pipe body or the cover body are realized, the structure of the rotary clamping mechanism is greatly simplified, and the use and the maintenance are more convenient.

Referring to fig. 6, the discharging device includes a discharging plate 14 elastically disposed on a bottom wall of the tube discharging groove 110 or the cap discharging groove 213, an elastic member 15 is disposed between the discharging plate 14 and the bottom wall of the tube discharging groove 110 or the cap discharging groove 213, the elastic member 15 is configured as a spring, one end of the elastic member 15 is fixedly connected with the discharging plate 14, and the other end is fixedly connected with the bottom wall of the tube discharging groove 110 or the cap discharging groove 213.

When the pipe body or the cover body is jacked into the pipe unloading groove 110 or the cover unloading groove 213, the pipe body or the cover body pushes the unloading plate 14 to approach the bottom wall of the pipe unloading groove 110 or the cover unloading groove 213, the elastic piece 15 is compressed to deform, and when the clamping device is rotated to release the clamping of the pipe body or the cover body, the deformation force of the elastic piece 15 pushes the pipe body or the cover body to pop out of the pipe unloading groove 110 or the cover unloading groove 213, so that the automatic unloading operation of the pipe body or the cover body by the unloading device is realized, the structure is simpler, and the efficiency is higher.

Example two

The embodiment of the application discloses a virus sampling tube, which is manufactured by a virus sampling tube forming die disclosed in the embodiment I. Referring to fig. 7 and 8, the virus sampling tube comprises a tube portion 16 and a cover portion 17 which are in threaded connection, a positioning column 18 is coaxially and fixedly connected to the inner bottom wall of the cover portion 17, one end, close to the inner bottom wall of the cover portion 17, of the positioning column 18 is smoothly arranged, the free end of the positioning column 18 is arranged in a taper manner along the axial direction of the cover portion 17, the outer diameter, close to the inner bottom wall of the cover portion 17, of the positioning column 18 is larger than the outer diameter of the free end of the positioning column 18, and a slot 19 for inserting a test sample is formed in the middle of the positioning column 18; the pipe portion 16 is integrally injection molded from a homo-PP plastic blended with a transparent nucleating agent of the type selected from polymeric nucleating agents.

After the pipe part 16 is in threaded connection with the cover part 17, the inner wall of the pipe part 16 is abutted against the outer wall of the positioning column 18, the outer wall of the pipe part 16 is abutted against the inner arc wall of the cover part 17, and the free end of the positioning column 18 is in taper arrangement, so that the gap between the positioning column 18 and the inner protection wall of the cover part 17 is gradually reduced until the gap is gentle, the abutting acting force of the pipe part 16 against the cover part 17 is gradually increased in the process of penetrating into the cover part 17, and the connection between the pipe part 16 and the cover part 17 is more stable and firm, and the sealing performance is better; the middle of the positioning column 18 is provided with the slot 19, so that unused test pieces can be stably inserted on the cover 17 to avoid the test pieces from being polluted, and meanwhile, after the test pieces are inserted into the tube 16 after sampling, the positioning column 18 can also position the cut test pieces to avoid the test pieces from shaking excessively in the tube 16 to lead the sampling ends of the test pieces to deviate from virus preservation solution, thereby ensuring the sampling accuracy of the virus sampling tube as much as possible.

The homo-PP plastic has better transparency and hardness, so that the injection molded pipe part 16 has higher transparency and hardness, the high visibility and high protectiveness of the virus sampling pipe are improved, and the crystallinity of the molded PP plastic can be reduced by adding the PP transparent nucleating agent into the homo-PP plastic, the refractive index of the molded PP plastic is improved, and the transparency of the molded pipe part 16 is further improved.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (8)

1. A virus sampling pipe forming die which is characterized in that: comprises a pipe body forming die and a cover body forming die;

the pipe body forming die comprises a first round table (101) and a second round table (102), a pipe orifice die (103) and a pipe pressing die (104) are respectively arranged on the adjacent side walls of the first round table (101) and the second round table (102), a pipe unloading die (105) adjacent to the pipe orifice die (103) is arranged on the first round table (101), a pipe wall groove (106) is formed in the pipe orifice die (103), a pipe orifice groove (107) coaxial with the pipe wall groove (106) is formed in the pipe pressing die (104), a pipe spiral groove (108) is formed in the cambered surface groove wall of the pipe orifice groove (107), and a pipe forming column (109) is coaxially and fixedly connected on the bottom wall of the pipe orifice groove (107) through the pipe pressing die (104); after the pipe orifice die (103) is abutted with the pipe pressing die (104), a pipe body injection cavity is formed among the pipe wall groove (106), the pipe orifice groove (107) and the pipe forming pipe column (109), and a pipe injection port communicated with the pipe wall groove (106) is formed at one end of the pipe orifice die (103) far away from the pipe pressing die (104);

a tube unloading groove (110) is formed in the tube unloading die (105), a rotary clamping device is arranged on the arc-surface groove wall of the tube unloading groove (110) in the tube unloading die (105), a discharging device is arranged on the bottom wall of the tube unloading groove (110) in the tube unloading die (105), and the tube unloading groove (110) and the tube orifice groove (107) are positioned on a concentric circle of the axis of the first round table (101);

the cover body forming die comprises a third round table (201) and a fourth round table (202), a cover mouth die (203) and a cover pressing die (204) are respectively arranged on the adjacent side walls of the third round table (201) and the fourth round table (202), a cover unloading die (205) adjacent to the cover mouth die (203) is arranged on the third round table (201), a cover wall groove (206) is formed in the cover mouth die (203), a convex ring (207) is fixedly connected onto the bottom wall of the cover wall groove (206) through the cover mouth die (203), the free end of the convex ring (207) is in a closing-in shape, a conical groove (208) is coaxially formed in the free end of the convex ring (207), and the flaring end of the conical groove (208) is located on the free end of the convex ring (207);

the cover pressing die (204) is fixedly connected with a pressing ring (209) coaxial with the convex ring (207), a cover spiral groove (210) is coaxially formed in the peripheral wall of the pressing ring (209), the inner wall of the pressing ring (209) close to one end of the cover pressing die (204) is in a closing-in shape, the inner wall of the pressing ring (209) is coaxially fixedly connected with a frustum (211), and the tip of the frustum (211) deviates from the cover pressing die (204) and is coaxially fixedly connected with a push rod (212); after the cover die (203) is abutted with the cover pressing die (204), a cover body injection cavity is formed among the cover wall groove (206), the convex ring (207), the compression ring (209), the conical groove (208), the conical table (211) and the ejector rod (212), and a cover injection opening communicated with the cover wall groove (206) is formed at one end, far away from the cover pressing die (204), of the cover die (203);

a cover unloading groove (213) is formed in the cover unloading mold (205), the rotary clamping device is arranged on the cambered surface groove wall of the cover unloading groove (213) in the cover unloading mold (205), the discharging device is arranged on the bottom wall of the cover unloading groove (213) in the cover unloading mold (205), and the cover unloading groove (213) and the cover wall groove (206) are positioned on a concentric circle of the axis of the third round table (201); the first round table (101) is provided with a plurality of groups of pipe orifice dies (103) and pipe unloading dies (105), and the third round table (201) is provided with a plurality of groups of cover orifice dies (203) and cover unloading dies (205).

2. The viral sampling tube forming die according to claim 1, wherein: the rotary clamping device comprises an annular sinking table (3) arranged on the wall of an open end of the pipe unloading groove (110) or the cover unloading groove (213), a main ring (4) and an auxiliary ring (5) are coaxially connected in the sinking table (3) in a rotating mode, a rubber ring (6) with built-in compressed air is connected between the main ring (4) and the auxiliary ring (5), a top table (7) is fixedly connected to one side, far away from the main ring (4), of the auxiliary ring (5), the main ring (4) is connected with the auxiliary ring (5) in a sliding mode along the axial direction of the auxiliary ring, and a driving mechanism used for driving the main ring (4) and the auxiliary ring (5) to synchronously rotate is arranged on the pipe unloading die (105) or the cover unloading die (205).

3. The viral sampling tube forming die according to claim 2, wherein: the main ring (4) is fixedly connected with a main retaining wall (8) along the outer edge, the auxiliary ring (5) is fixedly connected with an auxiliary retaining wall (9) attached to the inner wall of the main retaining wall (8) along the outer edge, a plurality of sliding grooves (10) along the axial direction of the sliding grooves are formed in the inner wall of the main retaining wall (8), and a plurality of sliding strips (11) matched with the sliding grooves (10) in a sliding mode are fixedly connected on the outer wall of the auxiliary ring (5).

4. The viral sampling tube forming die according to claim 2, wherein: the driving mechanism comprises a toothed ring (12) coaxially fixedly connected to the outer circumferential wall of the cambered surface of the main ring (4), and a plurality of driven gears (13) which are meshed with the toothed ring (12) are connected to the pipe unloading die (105) or the cover unloading die (205) in a rotating manner and are connected with the driven gears (13) in a same-motion transmission manner.

5. The viral sampling tube forming die according to claim 1, wherein: the discharging device comprises a discharging plate (14) which is elastically arranged on the bottom wall of the discharging pipe groove (110) or the bottom wall of the discharging cover groove (213), an elastic piece (15) is arranged between the discharging plate (14) and the bottom wall of the discharging pipe groove (110) or the bottom wall of the discharging cover groove (213), one end of the elastic piece (15) is fixedly connected with the discharging plate (14), and the other end of the elastic piece is fixedly connected with the bottom wall of the discharging pipe groove (110) or the bottom wall of the discharging cover groove (213).

6. The viral sampling tube forming die according to claim 1, wherein: an annular groove (111) coaxial with the pipe orifice groove (107) is formed in the pipe pressing die (104), and the annular groove (111) is communicated with the pipe orifice groove (107) and is adjacent to the pipe spiral groove (108).

7. The viral sampling tube forming die according to claim 1, wherein: the pipe orifice die (103) is fixedly connected with a bottom circular table (112) coaxially at the bottom wall of the pipe wall groove (106), a bottom cone groove (113) is coaxially formed at the free end of the bottom circular table (112), the flaring end of the bottom cone groove (113) deviates from the bottom wall of the pipe wall groove (106), and a bottom cone body (114) matched with the bottom cone groove (113) is fixedly connected with the free end of the pipe forming column (109) integrally.

8. The viral sampling tube forming die according to claim 1, wherein: the free end of the ejector rod (212) is provided with a plurality of sheet grooves (214), and the sheet grooves (214) are axially arranged along the ejector rod (212) and tangential to concentric circles of the ejector rod (212).

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