CN221112667U - Catheter holder injection mold - Google Patents

Abstract

The utility model provides a catheter socket injection mold which comprises a female mold fixing plate, a female mold plate, a male mold plate, mold legs, a male mold fixing plate and a mold core assembly, wherein the mold core assembly comprises a mold core and a guide post, the guide post penetrates through the mold core, a first slide block and a second slide block are arranged on two sides of the mold core, guide post holes are formed in the first slide block and the second slide block, two ends of the guide post are respectively inserted into the guide post holes of the first slide block and the second slide block, the first slide block is connected with a first slide block insert pin, and the second slide block is connected with a second slide block insert pin. The utility model improves the structure of the existing catheter seat injection mold, changes the prior two insert pins into a male mold and a female mold which are respectively connected with the mold into two insert pins which are respectively connected with two slide blocks of the mold core assembly, drives the insert pins to realize opposite insertion by the slide blocks, and positions the slide blocks at two sides by a guide post when the slide blocks move so as to ensure the precision of the slide blocks at two sides, namely, the coaxiality of the insert pins of the slide blocks can be ensured, and solves the problems of burrs and insert pin breakage when the catheter seat is molded.

Description

Catheter holder injection mold

Technical Field

The utility model relates to the field of molds, in particular to a catheter seat injection mold.

Background

The structure of the catheter seat product is shown in fig. 9 and 10, a small collision hole is formed in the middle of the catheter seat, the aperture size is 0.48mm, and the phenomenon that burrs and insert needles are frequently broken at the hole is very easy to occur when the existing die is subjected to injection molding, so that a large number of defects and energy production cannot occur in the catheter seat product. The existing mould is in injection moulding, realize bumping the shaping of perforation through two inlaying pair inserting, and current design is that two inlaying needles are connected respectively on the male mould and the master mould of mould, drive the inlaying needle by the male and the master mould and realize inserting, but generally there is certain difference in temperature when shaping because of the male and the master mould, thermal expansion can lead to the inlaying needle that male and the master mould are connected to have a displacement (even make two inlaying needles produce concentric deviation, produce the dislocation), inlay to inserting fixed wearing and tearing one side, produce the deckle edge when causing the needle to draw to hinder and cause the catheter tube socket shaping, when the needle deviation is serious, the compound die directly causes the needle to press to break.

Disclosure of utility model

The utility model provides a catheter tube seat injection mold, which aims to solve the problems that when a mold in the prior art is used for injection molding, a catheter tube seat is extremely easy to generate burrs and frequent breakage of an insert needle, so that a great amount of defects and energy production are generated in a catheter tube seat product.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a pipe tube seat injection mold, includes female die fixed plate, female die board, public template, mould foot and public mould fixed plate that link to each other in proper order, still includes the mold core subassembly, the mold core subassembly includes mould benevolence and guide pillar, the guide pillar runs through the mould benevolence, the both sides of mould benevolence are equipped with first slider and second slider, first slider with all be equipped with the guide pillar hole on the second slider, the both ends of guide pillar are inserted respectively first slider with in the guide pillar hole of second slider, first slider is connected with first slider and inserts the needle, the second slider is connected with the second slider and inserts the needle.

Further, the first slider is provided with a waterway pipeline, the first slider insert pin is connected with one end of the beryllium copper insert, and the other end of the beryllium copper insert is connected with the waterway pipeline.

Further, the die further comprises a first guide sleeve and a second guide sleeve, and the first guide sleeve and the second guide sleeve are respectively sleeved at two ends of the guide post.

Further, a bottom hole is formed in the middle of the second sliding block insert pin, and one end of the second sliding block insert pin is connected with a sliding block insert pin cushion block.

Further, the mold further comprises a female mold insert, the molding end of the female mold insert is in contact with the second slider insert pin, the female mold insert is perpendicular to the second slider insert pin, and the female mold insert is specifically an exhaust hole molding insert.

Further, the first slider insert pin and the second slider insert pin are on the same straight line.

Further, the die further comprises an inner hexagon bolt, a bolt hole is formed in the die core, and the inner hexagon bolt is connected with the guide post through the bolt hole.

Further, the die also comprises a thimble, and the thimble is used for ejecting out the catheter seat product after the catheter seat is formed.

Therefore, the utility model has the following beneficial effects:

The utility model improves the structure of the existing catheter seat injection mold, changes the prior two insert pins into a male mold and a female mold which are respectively connected with the mold into two insert pins which are respectively connected with two slide blocks of the mold core assembly, drives the insert pins to realize opposite insertion by the slide blocks, and positions the slide blocks at two sides by a guide post when the slide blocks move so as to ensure the precision of the slide blocks at two sides, namely the coaxiality of the insert pins of the slide blocks can be ensured, the problem of burrs and insert pin breakage during the molding of the catheter seat is solved, and the mass production can be realized; meanwhile, one end of the beryllium copper insert is inserted into the cooling waterway pipeline, so that heat generated when the first sliding block insert pin and the sliding block insert are formed can be effectively taken away, and the size stability of a formed product is ensured.

Drawings

FIG. 1 is a side cross-sectional view of a catheter hub injection mold of the present utility model;

FIG. 2 is a schematic view of the internal structure of the mold core assembly of the present utility model;

FIG. 3 is a top view of the internal structure of the core assembly of the present utility model;

FIG. 4 is a cross-sectional view A-A shown in FIG. 3;

FIG. 5 is a schematic view of the overall structure of the core assembly of the present utility model;

FIG. 6 is a top plan view of the overall structure of the core assembly of the present utility model;

FIG. 7 is a cross-sectional view A-A as shown in FIG. 6;

FIG. 8 is an enlarged view of a portion of the view shown in FIG. 7;

FIG. 9 is a schematic illustration of a catheter hub product construction;

FIG. 10 is a side cross-sectional view of a catheter hub product;

FIG. 11 is a schematic view showing the overall structure of the injection mold for the catheter hub of the present utility model.

In the figure: A. a female die fixing plate; B. a master template; C. a male template; D. a mold foot; e, a male die fixing plate; 1. a first slider; 2. the first guide sleeve; 3, mold core; 4. a guide post; 5. an inner hexagon bolt; 6. a second guide sleeve; 7. a second slider; 8. a master mold insert; 9. a mold insert; 10. a needle cushion block is inlaid on the sliding block; 11. a second slider is inlaid with a needle; 12. the first sliding block is inlaid with a needle; 13. a thimble template; 14. a slider insert; 15. beryllium copper insert; 16. a waterway pipeline; 17. a molding end of the master mold insert; 18. a bottom hole; 19. a thimble; 20. a guide hole; 21. an exhaust hole; 22. hose bonding holes; 23. and (5) punching.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

As shown in FIG. 1, the catheter seat injection mold comprises a female mold fixing plate A, a female mold plate B, a male mold plate C, a mold foot D and a male mold fixing plate E which are sequentially connected; also included is a core assembly as shown in fig. 2, 3, 4, 5, 6, 7 and 8; as shown in fig. 4, the mold core assembly includes a mold core 3 and a guide pillar 4, the guide pillar 4 penetrates through the mold core 3, a first slide block 1 and a second slide block 7 are arranged at two sides of the mold core 3, guide pillar holes are formed in the first slide block 1 and the second slide block 7, two ends of the guide pillar are respectively inserted into the guide pillar holes of the first slide block 1 and the second slide block 7, the first slide block 1 is connected with a first slide block insert 12, and the second slide block 7 is connected with a second slide block insert 11.

The utility model improves the structure of the existing catheter seat injection mold, changes the prior two insert pins into a male mold and a female mold which are respectively connected with the mold into two insert pins which are respectively connected with two slide blocks of the mold core assembly, drives the insert pins to realize opposite insertion by the slide blocks, and positions the slide blocks at two sides by the guide post 4 when the slide blocks move so as to ensure the precision of the slide blocks at two sides, namely, the coaxiality of the insert pins of the slide blocks can be ensured, and solves the problems of burrs and insert pin breakage during the molding of the catheter seat.

As shown in fig. 7, the first slider 1 is provided with a waterway pipe 16, and the first slider insert 12 is connected to one end of the beryllium copper insert 15, and the other end of the beryllium copper insert 15 is connected to the waterway pipe 16.

One end of the beryllium copper insert 15 is inserted into the cooling waterway pipeline 16, so that heat generated when the first slide block insert needle 12 and the slide block insert 14 are formed can be effectively taken away, and the dimensional stability of a formed product is ensured.

As shown in fig. 4, the mold further includes a first guide sleeve 2 and a second guide sleeve 6, where the first guide sleeve 2 and the second guide sleeve 6 are respectively sleeved at two ends of the guide post 4.

As shown in fig. 7 and 8, a bottom hole 18 is provided in the middle of the second slider insert 11, and one end of the second slider insert 11 is connected with a slider insert pad 10.

As shown in fig. 7, the mold core assembly further includes a female mold insert 8, a molding end 17 of the female mold insert contacts the second slider insert 11, the female mold insert 8 is perpendicular to the second slider insert 11, and the female mold insert 8 is specifically an exhaust hole molding insert.

As shown in fig. 7, the first slider insert 12 and the second slider insert 11 are on the same straight line.

As shown in fig. 4, the mold core assembly further comprises an inner hexagon bolt 5, a bolt hole is formed in the mold core 3, and the inner hexagon bolt 5 is connected with the guide post 4 through the bolt hole.

As shown in fig. 7 and 8, the mold further includes ejector pins 19, the ejector pins 19 being used to eject the catheter hub product after the catheter hub is formed.

The inventive concept of the present invention is described in further detail in the following examples.

The catheter hub product structure is shown in fig. 9 and 10, and has a small collision hole 23 in the middle, the aperture size is 0.48mm, and an exhaust hole 21 of 0.2mm is arranged on the side surface of the hose bonding hole 22. The burrs and the frequent breakage of the insert needle are very easy to occur at the hole during injection molding, so that mass production cannot be realized.

The burrs are because the first slider insert 12 and the second slider insert 11 need to be inserted, the original design inserts are respectively connected on the male die and the female die of the die, a certain temperature difference is usually generated during molding of the male die and the female die, thermal expansion usually causes displacement (and concentric deviation of the inserts) of the male die and the female die, the inserts are fixed on one side of the fixed wear of the inserts, the burrs of the product are caused during molding due to the pull of the inserts, and the inserts are directly pressed and broken during die assembly when the deviation is serious.

The size of the product bump hole 23 is 0.48mm, the size is too small, in order to ensure that the first slide insert needle 12 and the second slide insert needle 11 are inserted in a staggered manner, a guide post 4 is arranged in the die core, the guide post 4 penetrates through the die core, as shown in fig. 4, and fig. 4 is a section view of A-A in fig. 3. The first sliding block 1 and the second sliding block 7 are respectively arranged at two sides of the die core 3, the first guide sleeve 2 and the second guide sleeve 6 are respectively arranged at two ends of the die core, the guide posts 4 are used for positioning at the same time in the moving process of the first sliding block 1 and the second sliding block 7 at two sides, the precision of the sliding blocks at two sides is ensured, and the coaxiality of the two sliding block insert pins can be ensured.

The inner hexagon bolt 5 is used for fixing the guide post 4 and preventing the guide post 4 from sliding along with the sliding block to be removed from the die core.

The middle line of the second slide insert 11 is provided with a bottom hole 18, so that a longer insertion guide length is ensured when the first slide insert 12 and the second slide insert 11 are inserted.

The beryllium copper insert 15 is inlaid in the rear of the first slide block insert needle 12, the other end of the beryllium copper insert 15 is inserted into the cooling waterway pipeline 16, the middle is sealed by a sealing ring, heat generated during molding of the first slide block insert needle 12 and the slide block insert 14 can be effectively taken away, and the dimensional stability of a molded product is ensured.

The female mold insert 8 was used to mold vent holes 21 in the product, the vent holes 21 were 0.2mm in size, and the mold insert 9 was used to mold luer.

The sliding block insert cushion block 10 supports the second sliding block insert 11 of the part, a part of the beryllium copper insert 15 needs to be inserted into the cooling water channel 16, so that heat of the beryllium copper insert 15 can be taken away through cooling water, and the insert cooling effect is better. Therefore, the product size can be better controlled and the injection molding period can be shortened when the product is injection molded.

As shown in fig. 11, which is an axial view of the overall structure of the mold of the present utility model, it will be appreciated that corresponding molding areas are provided within the female mold plate B and the male mold plate C for receiving the mold core assembly for processing the product.

The female mold plate B is driven by an external device (not shown) to be away from the male mold plate C or to be clamped with the male mold plate C. When the female template B and the male template C are assembled, materials can be injected into the molding area mold core assembly between the female template B and the male template C to process products, after the products are processed, the female template B is opened, and the products are taken out to finish one-time processing. When the product is taken out, the external mechanism drives the thimble template 13 to move towards the male template C, so that the thimble 19 is lifted, the product in the mold core assembly in the molding area is jacked up, and the blanking is convenient.

The operation of the mould provided in this embodiment is generally: firstly, when the ejector pins 19 retract in the male template C, the ejector pin template 13 is far away from the male template C, and then drives the ejector pins 19 to move downwards, and then the female template B and the male template C are clamped, two guide pins (not shown) on the female template B are inserted into the two slide blocks through the guide holes 20 of the first slide block 1 and the second slide block 7 during clamping, the guide holes 20 are obliquely arranged, the obliquely arranged guide pins are inserted into the guide holes 20 under the driving of clamping, and the first slide block 1 and the second slide block 7 are driven to move towards the middle, so that the first slide block insert 12 and the second slide block insert 11 are driven to perform opposite insertion, and clamping is completed. The guide bolt also plays a role in auxiliary positioning, and is convenient for die assembly. After the product processing is finished, the female die plate B is far away from the male die plate C, and two guide bolts (not shown) on the female die plate B are pulled out of the guide holes 20 of the first sliding block 1 and the second sliding block 7, so that the first sliding block 1 and the second sliding block 7 are driven to move to two sides, the first sliding block insert needle 12 and the second sliding block insert needle 11 are driven to be separated, the product is exposed, and then the ejector pin template 13 is driven by an external mechanism to move towards the male die plate C, so that the ejector pins 19 jack up the product, and the blanking is facilitated. After the blanking is completed, the thimble template 13 moves downwards, so as to drive the thimble 19 to move downwards, and when the thimble 19 is retracted in the male die, the next die assembly can be performed and a product can be processed.

The utility model can ensure stable injection molding production under the condition that the middle collision hole 23 and the exhaust hole 21 of the catheter seat are small.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

It will be readily understood by those skilled in the art that the present utility model, including any combination of parts described in the summary and detailed description of the utility model above and shown in the drawings, is limited in scope and does not constitute a complete description of the various aspects of these combinations for the sake of brevity. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (8)

1. The utility model provides a pipe tube seat injection mold, includes female die fixed plate, female die board, public template, mould foot and public mould fixed plate that link to each other in proper order, its characterized in that still includes the mold core subassembly, the mold core subassembly includes mould benevolence and guide pillar, the guide pillar runs through the mould benevolence, the both sides of mould benevolence are equipped with first slider and second slider, first slider with all be equipped with the guide pillar hole on the second slider, the both ends of guide pillar are inserted respectively first slider with in the guide pillar hole of second slider, first slider is connected with first slider and inserts the needle, the second slider is connected with the second slider and inserts the needle.

2. The catheter hub injection mold of claim 1 wherein said first slider is provided with a waterway conduit, said first slider insert is connected with one end of a beryllium copper insert, and the other end of said beryllium copper insert is connected with the waterway conduit.

3. The catheter hub injection mold of claim 1 further comprising a first guide sleeve and a second guide sleeve, said first guide sleeve and said second guide sleeve being respectively sleeved at two ends of said guide post.

4. A catheter hub injection mold according to claim 1, 2 or 3, wherein a bottom hole is provided in the middle of the second slider insert, and one end of the second slider insert is connected with a slider insert pad.

5. The catheter hub injection mold of claim 1 further comprising a female mold insert, wherein a molding end of said female mold insert is in contact with said second slider insert, wherein said female mold insert is perpendicular to said second slider insert, and wherein said female mold insert is specifically a vent molding insert.

6. The catheter hub injection mold of claim 1 or 5 wherein said first slider insert and said second slider insert are collinear.

7. The catheter hub injection mold of claim 1 further comprising a socket head cap screw, wherein said insert has a bolt hole, said socket head cap screw being coupled to said guide post through said bolt hole.

8. The catheter hub injection mold of claim 1 or 7 further comprising a thimble for ejection after catheter hub molding.