Butterfly needle piece mold

Abstract

According to the butterfly needle piece mold provided by the invention, the wing piece cavity and the wing piece core cavity for forming the butterfly needle piece are communicated cavities, so that a butterfly needle piece product can be integrally formed in the communicated cavities during injection molding, the product cannot be adhered to other parts, and the product can be smoothly separated from the mold during demolding; and the surface of the product cannot be scratched by related parts. And furthermore, the mold is formed by matching a plurality of parts and performs own functions, so that when a certain part is damaged, the part can be replaced in time and is easy to maintain in the later period, the service life of the mold is longer, and each part is of a fixed model and size and is not easy to misplace during working. The mode that the first cavity sliding block and the second cavity sliding block are matched to form the mold bottom is adopted, the first cavity sliding block and the second cavity sliding block are not prone to generating flashes at the collision connection position, a needle passage of a butterfly needle piece product is completely formed, and therefore the complete and standardized product can be formed through the mold.

Description

Technical Field

[0001] The invention relates to the technical field of moulds, and in particular to a butterfly needle piece mould. Background Art

[0002] The butterfly needle is a medical device used for blood collection, blood transfusion and infusion. Specifically, the needle tube is glued to the needle seat in the middle of the butterfly piece with glue, and the needle tube is protected by a sheath; the butterfly piece is formed by soft plastic injection molding. The existing butterfly piece mold has multiple cavities processed on the same set of sliders. Since the mold core of the molding part is thin, long and narrow, the overall slider is easily misplaced and damaged; and because the butterfly piece is soft and light, during the injection molding process, demolding is not smooth, and the product is easy to stick to the mold, causing damage to the mold, making it difficult to control the quality of the product. Therefore, it is necessary to propose an improvement plan for this problem. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a butterfly needle sheet mold.

[0004] The present invention discloses a butterfly needle piece mold, comprising a first cavity slider and a second cavity slider arranged opposite to each other, a core component and a first core, wherein the contact surface of the first cavity slider or / and the second cavity slider is provided with at least one group of wing cavity bodies for molding butterfly wings, a liquid injection channel and a recess for accommodating the core component, the core component is located in the middle of the wing cavity, and the first core is plugged above the core component;

[0005] The core component includes a first column and a second column, a first extension piece is provided on one side of the bottom end of the first column extending downward to the second column, and a second extension piece is provided on the top end of the second column extending upward to the first column relative to one side of the first extension piece; a first hole groove is provided on the first column on one side of the first extension piece, the second extension piece is an arc-shaped piece, and a second hole groove is provided on the second column on the inner side of the arc-shaped piece, the first hole groove and the second hole groove are connected to form a needle channel cavity, and the bottom of the first core extends into the needle channel cavity; the space enclosed by the first extension piece, the second extension piece and the needle channel cavity is a wing core cavity, and during injection molding, the injection channel, the wing cavity and the wing core cavity are connected.

[0006] In an optional embodiment, a first stop bar is provided at the top end of the first hole groove in the first column, and a second stop bar is provided at the bottom end of the second hole groove in the second column. A through hole is provided on the first stop bar, and the first core extends into the needle channel cavity through the through hole, and the outer wall where the first core is connected to the through hole is interference fit.

[0007] In an optional embodiment, it also includes a slider seat, which includes a first inclined block and a second inclined block, the first inclined block is provided with a first inclined surface, and the second inclined block is provided with a second inclined surface; the left side of the first cavity slider is a third inclined surface that cooperates with the first inclined surface, and the right side of the second cavity slider is a fourth inclined surface that cooperates with the second inclined surface, the first cavity slider and the second cavity slider are both provided on the inner side of the slider seat, and both slide up and down along the inner side of the slider seat.

[0008] In an optional embodiment, the slider seat also includes a first track block and a second track block, and a track is provided on at least one side of the same side of the first cavity slider and the second cavity slider, and the first track block and / or the second track block are provided with a track that cooperates with the track on the inner side, and the first cavity slider and the second cavity slider both slide up and down along the track through the track.

[0009] In an optional embodiment, a limit assembly is further included, a vertical groove is opened along the second inclined surface of the second inclined block, one end of the limit assembly is arranged in the second cavity slider, and the other end extends out of the fourth inclined surface and extends into the vertical groove.

[0010] In an optional embodiment, at least one first groove body and a second groove body arranged below the second cavity slider are provided on the second cavity slider, and the limiting assembly is arranged in the first groove body and the second groove body, and the limiting assembly includes a sliding top column located in the first groove body and a limiting member located in the second groove body; one end of the sliding top column extends from the first groove body into the vertical groove and can move up and down along the vertical groove; a limiting groove is provided on the sliding top column, and one end of the limiting member extends from the second groove body into the limiting groove.

[0011] In an optional embodiment, a Latin is further included, wherein a first groove is provided at the bottom of the contact surface of the first cavity slider and the second cavity slider, and the top end of the Latin is connected to the inner side of the first groove.

[0012] In an optional embodiment, it also includes a slider ejection rod, and the first cavity slider and the second cavity slider are both provided with an inclined hole groove, and the slider ejection rod is connected to the inclined hole groove to push the first cavity slider and the second cavity slider downward.

[0013] In an optional embodiment, a limiting block is further included, and a second groove is provided at the bottom of the first cavity module and / or the second cavity module, and the limiting block abuts against the second groove.

[0014] In an optional embodiment, a surface of the first track block on which the track is provided is a track surface, and two limit tracks are respectively provided at both ends of the track surface, and the two limit tracks are respectively in contact with the same side surfaces of the first inclined block and the second inclined block.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] In the present invention, since the wing cavity and the wing core cavity for the butterfly needle piece are connected cavities, during injection molding, the butterfly needle piece product can be integrally formed in the connected cavity, and the product will not adhere to other parts. During demolding, the product can also be smoothly separated from the mold, and the relevant parts will not scratch the surface of the product. Furthermore, since the mold is composed of a plurality of parts, each of which performs its own function, when a certain part is damaged, it can be replaced in time, which is easy for later maintenance. Therefore, the service life of the mold is longer, and each part is of fixed model size, and it is not easy to be misplaced during operation. By adopting the method of using the first cavity slider and the second cavity slider as the two groups of sliders to cooperate to form the bottom of the mold, it is not easy to produce flash at the joint of the two, and the needle path of the butterfly needle piece product is formed completely. Therefore, a complete and standardized product can be formed by this mold, which is also beneficial to the smooth assembly of the steel needle in the subsequent process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure numerals: 1-first cavity slider, 101-grid cavity, 102-third inclined surface, 103-first groove, 104-inclined hole groove, 2-second cavity slider, 201-wing cavity, 202-liquid injection channel, 203-recess, 204-fourth inclined surface, 205-track, 206-first groove body, 207-second groove body, 3-core component, 301-first column, 3011-first extension piece, 3012-first hole groove, 3013-first gear bar, 302-second column, 3021-second extension piece, 3022-second hole groove, 3023-first gear bar, 3024-second column, 3025-second extension piece, 3026-second groove, 3027-second groove, 3028-second groove, 3029-second groove, 3030-second groove, 3031-second groove, 3032-second groove, 3033-second groove, 3034-second groove, 3035-second groove, 3036-second groove, 3037-second groove, 3038-second groove, 3039-second groove, 3040-second groove, 3041-second groove, 3042-second groove, 3043-second groove, 3044-second groove, 3045-second groove, 3046-second groove, 3047-second groove, 3048-second groove, 3049-second groove, 3050-track, 206-first groove body, 206-first groove body, 207-second groove, 308-second groove, 308-second groove, 308-second groove, 308-second groove, 308-second groove, 22-second hole groove, 3023-second stop bar, 4-first core, 5-slider seat, 501-first inclined block, 5011-first inclined plane, 502-second inclined block, 5021-second inclined plane, 50211-vertical groove, 503-first track block, 5031-track surface, 50311-track, 50312-limiting track, 504-second track block, 6-limiting assembly, 601-sliding ejector column, 6011-limiting groove, 602-limiting piece, 7-Latin, 8-slider ejector rod, 9-limiting block, 10-thrust pin.

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0020] Figure 2 The explosion of the present invention Figure 1 ;

[0021] Figure 3 The explosion of the present invention Figure 2 ;

[0022] Figure 4 It is a structural schematic diagram of the limiting component in the present invention;

[0023] Figure 5 It is an exploded schematic diagram of the core assembly and the first core in the present invention;

[0024] Figure 6 It is a schematic structural diagram of the second column in the present invention;

[0025] Figure 7 It is a schematic structural diagram of the first column in the present invention;

[0026] Figure 8 The side profile of the present invention Figure 1 ;

[0027] Fig. 9 The side profile of the present invention Figure 2 ;

[0028] Fig.10 The side profile of the present invention Figure 3 . DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0030] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0031] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those of ordinary skill in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0032] Unless otherwise defined, the technical terms or scientific terms involved in this application should be understood by people with ordinary skills in the technical field to which this application belongs. The words "one", "a", "a", "the" and the like involved in this application do not indicate a quantitative limitation, and may represent the singular or plural. The terms "include", "comprise", "have" and any of their variations involved in this application are intended to cover non-exclusive inclusions; for example, a process, method, system, product or device that includes a series of steps or modules (units) is not limited to the listed steps or units, but may also include steps or units that are not listed, or may also include other steps or units inherent to these processes, methods, products or devices. The words "connect", "connected", "coupled" and the like involved in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The "multiple" involved in this application refers to two or more. "And / or" describes the association relationship of associated objects, indicating that there may be three relationships, for example, "A and / or B" can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the objects before and after are in an "or" relationship. The terms "first", "second", "third", etc. involved in this application are only used to distinguish similar objects and do not represent a specific ordering of the objects.

[0033] See also Figure 1-10 The embodiment of the present invention discloses a butterfly needle sheet mold, comprising a first cavity slider 1 and a second cavity slider 2, a core component 3 and a first core 4, the first cavity slider 1 and / or the second cavity slider 2 are arranged on the contact surface thereof, at least one set of wing cavity 201 for molding butterfly wings, a liquid injection channel 202 and a recess 203 for accommodating the core component 3, the core component 3 is located in the middle of the wing cavity 201, and the first core 4 is plugged above the core component 3;

[0034] The core component 3 includes a first column 301 and a second column 302, a first extension piece 3011 is provided on one side of the bottom end of the first column 301 extending downward to the second column 302, and a second extension piece 3021 is provided on the top end of the second column 302 extending upward to the first column 301 relative to one side of the first extension piece 3011; a first hole groove 3012 is provided on the first column 301 on one side of the first extension piece 3011, the second extension piece 3021 is an arc-shaped piece, and a second hole groove 3022 is provided on the inner side of the arc-shaped piece on the second column 302, the first hole groove 3012 and the second hole groove 3022 are connected to form a needle channel cavity, and the bottom of the first core 4 extends into the needle channel cavity; the space enclosed by the first extension piece 3011, the second extension piece 3021 and the needle channel cavity is a wing core cavity, and during injection molding, the injection channel 202, the wing cavity 201 and the wing core cavity are connected.

[0035] Specifically, the first cavity slider 1, the second cavity slider 2, the first column 301 and the first core 4 can be abstractly defined as the fixed mold part, and the fixed mold is used to obtain the product by injection molding; the second column 302 can be abstractly defined as the movable mold part, and the movable mold is used to take the product out of the fixed mold. The first core 4 is used to fix the position of the core component 3.

[0036] Preferably, the wing cavity 201 is arranged on the second cavity slider 2, and a grid cavity 101 is arranged on the second cavity slider 2 at a position corresponding to the wing cavity 201. When injection molding, the surface of the butterfly needle sheet product formed also has a grid, and the product can also increase the contact area when picking up.

[0037] Furthermore, there is a distance of 1-3 mm between one end of the first extension piece 3011 and one end of the second extension piece 3021. The portion formed by the liquid between the distances during injection molding is the connecting plate connecting the two wing pieces. At the same time, the liquid will solidify in the needle channel cavity to form a needle channel. In this way, the key connecting plate portion and the needle channel portion of the butterfly needle piece product are formed, which together with the two wing pieces formed in the wing cavity 201 form a complete butterfly needle piece product.

[0038] When the present invention is used, the first cavity slider 1 and the second cavity slider 2 are closed, and injection molding is performed through the injection channel 202. The liquid is poured into the wing cavity 201 and the wing core cavity from the injection channel 202. After cooling, a butterfly needle piece is integrally formed in the wing cavity 201 and the wing core cavity. Specifically, two symmetrical butterfly wings are formed in the wing cavity 201, and a planar cavity and a needle channel connecting the two butterfly wings are formed in the wing core cavity.

[0039] After the injection molding is completed, the demoulding work begins. First, the first cavity slider 1 slides to the left, and the second cavity slider 2 slides to the right. After moving to a preset distance, the core component 3 is separated from the restriction of the first cavity slider 1. Since the butterfly needle piece has been formed, the butterfly needle piece is also separated from the first cavity slider 1 and the second cavity slider 2 as the core component 3 is separated. Then, the second column 302 moves downward, driving the formed butterfly needle piece product to separate from the fixed mold part, completing the demoulding work.

[0040] In the present invention, since the wing cavity 201 and the wing core cavity for the butterfly needle piece are connected cavities, during injection molding, the butterfly needle piece product can be integrally formed in the connected cavity, and the product will not adhere to other parts. During demoulding, the product can also be smoothly separated from the mold, and the relevant parts will not scratch the surface of the product. Furthermore, since the mold is composed of a plurality of parts, each of which performs its own function, when a certain part is damaged, it can be replaced in time, which is easy for later maintenance. Therefore, the service life of the mold is longer, and each part is of fixed model size, and it is not easy to be misplaced during operation. By adopting the method of using the first cavity slider 1 and the second cavity slider 2 as the two groups of sliders to form the bottom of the mold, it is not easy to produce flash at the joint of the two, and the needle path of the butterfly needle piece product is formed completely. Therefore, a complete and standardized product can be formed through this mold, which is also beneficial to the smooth assembly of the steel needle in the subsequent process.

[0041] In an optional embodiment, a first stop bar 3013 is provided at the top end of the first hole groove 3012 in the first column 301, and a second stop bar 3023 is provided at the bottom end of the second hole groove 3022 in the second column 302. A through hole is provided on the first stop bar 3013, and the first core 4 extends into the needle channel cavity through the through hole, and the outer wall of the first core 4 connected to the through hole is interference fit.

[0042] Specifically, the first stop bar 3013 and the second stop bar 3023 are used to close the upper and lower channels of the wing core cavity. The upper and lower ends of the needle channel cavity are blocked, which can limit the length of the needle channel formed during subsequent injection molding, so that the liquid solidifies during the injection molding process to form a needle channel of a certain length.

[0043] In an optional embodiment, it also includes a slider seat 5, which includes a first inclined block 501 and a second inclined block 502, the first inclined block 501 is provided with a first inclined surface 5011, and the second inclined block 502 is provided with a second inclined surface 5021; the left side of the first cavity slider 1 is a third inclined surface 102 that cooperates with the first inclined surface 5011, and the right side of the second cavity slider 2 is a fourth inclined surface 204 that cooperates with the second inclined surface 5021, the first cavity slider 1 and the second cavity slider 2 are both arranged on the inner side of the slider seat 5, and both slide up and down along the inner side of the slider seat 5.

[0044] Specifically, the first cavity slider 1 and the second cavity slider 2 are arranged in the slider seat 5, and the first cavity slider 1 is in contact with the first inclined surface 5011 on the first inclined block 501 through its third inclined surface 102, and the second cavity slider 2 is in contact with the second inclined surface 5021 on the second inclined block 502 through its fourth inclined surface 204. When the first cavity slider 1 moves, it can slide to the lower left under the guidance of the first inclined surface 5011, and when the second cavity slider 2 moves, it can slide to the lower right under the guidance of the second inclined surface 5021, until the two cavity sliders are separated to a certain distance, and the core component 3 and the molded butterfly needle sheet product can be completely exposed. This structure can limit the moving range of the first cavity slider 1 and the second cavity slider 2, which is convenient for the subsequent reset work of the sliders.

[0045] In an optional embodiment, the slider seat 5 also includes a first track block 503 and a second track block 504, and a track 205 is provided on at least one side of the same side of the first cavity slider 1 and the second cavity slider 2. The first track block 503 and / or the second track block 504 are / is provided with a track 50311 that cooperates with the track 205 on the inner side, and the first cavity slider 1 and the second cavity slider 2 both slide up and down along the track 50311 through the track 205.

[0046] Preferably, the first track block 503 and the second track block 504 are both provided with rails 50311, and the first cavity slider 1 and the second cavity slider 2 are both provided with rails 205 on the same side. By providing restricted moving channels on both sides, the controllability of the movable mold part can be enhanced.

[0047] Specifically, when the first cavity slider 1 and the second cavity slider 2 slide along the slider seat 5, the direction and distance of their movement are limited by the cooperation between the track 205 and the track 50311, ensuring that the two are not too separated, and also facilitating subsequent resetting along the track 205 for subsequent work.

[0048] In an optional embodiment, a limiting component 6 is further included, and a vertical groove 50211 is opened along the second inclined surface 5021 of the second inclined block 502, one end of the limiting component 6 is arranged in the second cavity slider 2, and the other end extends out of the fourth inclined surface 204 and extends into the vertical groove 50211.

[0049] The limiting assembly 6 is used to fix the position of the second cavity slider 2 on the slider seat 5 during the injection molding process to ensure that the positions of various parts of the mold are aligned.

[0050] In an optional embodiment, at least one first groove body 206 and a second groove body 207 arranged thereunder are provided on the second cavity slider 2, and the limiting assembly 6 is arranged in the first groove body 206 and the second groove body 207, and the limiting assembly 6 includes a sliding top column 601 located in the first groove body 206 and a limiting member 602 located in the second groove body 207; one end of the sliding top column 601 extends to the cavity surface, and the other end extends from the first groove body 206 to the vertical groove 50211 and can move up and down along the vertical groove 50211 and the second inclined surface 5021; a limiting groove 6011 is provided on the sliding top column 601, and one end of the limiting member 602 extends from the second groove body 207 to the limiting groove 6011.

[0051] During demolding, the first cavity slider 1 and the second cavity slider 2 slide downward along the slider seat 5. During the movement, the sliding top column 601 is fitted by the vertical grooves 50211 on the slider seats 501 and 502, so that the sliding top column 601 remains motionless and the product is fixed in the center. At this time, the two sliders have been separated from the product. When the two sliders continue to slide downward, the sliding top column 601 is separated from the vertical groove 50211. At this time, when the sliding top column 601 is pushed by the spring force, the sliding top column 601 fits the second inclined surface 5021 and moves to the right, so that the sliding top column 601 is separated from the product. At the same time, the limit member 602 moves in the vertical groove 50211 and the second inclined surface 5021 to limit the retraction distance of the sliding top column 601 to prevent the sliding top column 601 from falling off the second cavity slider 2 when the second cavity slider 2 moves. Furthermore, when the second cavity slider 2 is to be reset to the position on the slider seat 5 for injection molding, the sliding top column 601 can abut against the end of the vertical groove 50211 to achieve the purpose of positioning the second cavity slider 2 to the reset position, and at the same time, it can also promote the first cavity slider 1 to be reset to the position cooperating with the second cavity slider 2, and prevent the sliding top 601 from rotating.

[0052] Specifically, one side of the sliding top column 601 connected to the vertical groove 50211 is an arc-shaped surface, so that the friction of the sliding top column 601 is alleviated when sliding on the second inclined surface 5021.

[0053] Furthermore, the vertical groove 50211 is a triangular body provided on the second inclined surface 5021, and the deepest part of the vertical groove 50211 on the slider seat 5 is an arc-shaped groove surface. The arc-shaped groove surface is adapted to the arc-shaped surface of the sliding top column 601, providing a gentle limit space for upward and downward movement.

[0054] In an optional embodiment, a Latin 7 is further included, and a first groove 103 is provided at the bottom of the contact surface of the first cavity slider 1 and the second cavity slider 2 , and the top end of the Latin 7 is connected to the inner side of the first groove 103 .

[0055] Specifically, Latin 7 is connected in the first groove 103, and is used to pull the first cavity slider 1 and the second cavity slider 2 when opening the mold, so that the two slide downward along the slider seat 5, separate the first cavity slider 1 and the second cavity slider 2, and then separate the core component 3 from the two, so as to facilitate the subsequent demolding of the butterfly needle piece.

[0056] In an optional embodiment, a slider ejector rod 8 is further included, and the first cavity slider 1 and the second cavity slider 2 are both provided with an oblique hole groove 104, and a spring is placed in the oblique hole groove 104, and the slider ejector rod 8 is connected to the oblique hole groove 104, and is used to push the first cavity slider 1 and the second cavity slider 2 downward. Preferably, the slider ejector rod 8 is connected to the power mechanism, and the slider ejector rod 8 pushes the first cavity slider 1 and the second cavity slider 2 to move along the track 205 on the slider seat 5 to open and separate the two.

[0057] In an optional embodiment, a stopper block 9 is further included, and a second groove is provided at the bottom of the first cavity module or / and the second cavity module, and the stopper block 9 abuts against the second groove. The stopper block 9 is used to limit the maximum displacement distance of the track 205 until the first cavity slider 1 and the second cavity slider 2 are opened to a distance sufficient for the butterfly needle sheet product to be demoulded.

[0058] In an optional embodiment, one side of the first track block 503 on which the track 50311 is provided is a track surface 5031, and two limiting tracks 50312 are respectively provided at both ends of the track surface 5031, and the two limiting tracks 50312 are respectively abutted against the same side surfaces of the first inclined block 501 and the second inclined block 502. Through this structure, the first inclined block 501, the first track block 503, the second inclined block 502 and the second track block 504 as well as the first cavity module and the second cavity module can be better connected.

[0059] Furthermore, it also includes an ejector pin 10, which is used to eject the formed butterfly needle piece; the end face of the ejector pin 10 is preferably an inverted V-shape, and this structure can better eject the butterfly needle piece product in accordance with the shape of the product, and will not scratch its surface when the product is demolded, which can effectively protect the butterfly piece.

[0060] In the present invention, as a preferred embodiment, the overall external structure of the first cavity slider 1 and the second cavity slider 2 can be symmetrical, which is convenient for aligning the two before the injection molding work.

[0061] It should be noted that multiple groups of wing cavity bodies 201, core components 3 and first core 4 structures can be set in the first cavity slider 1 and the first cavity slider 1, and multiple butterfly needle products can be injection molded at the same time to improve efficiency. In addition, two-cavity products correspond to one group of sliders. If any two cavities are damaged, the corresponding slider cavities are replaced. The mold is easy to repair later, the mold life is longer, and the single group of sliders is processed with higher precision, and the sliders are not easy to be misplaced.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A butterfly needle mold, characterized in that: The invention comprises a first cavity slider (1) and a second cavity slider (2) arranged opposite to each other, a core component (3) and a first core (4); the contact surface of the first cavity slider (1) or / and the second cavity slider (2) is provided with at least one group of wing cavities (201) for molding butterfly wings, a liquid injection channel (202) and a recess (203) for accommodating the core component (3); the core component (3) is located in the middle of the wing cavity (201), and the first core (4) is plugged above the core component (3); The core component (3) comprises a first column (301) and a second column (302); a first extension piece (3011) is provided on one side of the bottom end of the first column (301) and extends downward to the second column (302); a second extension piece (3021) is provided on the top end of the second column (302) and extends upward to the first column (301) relative to a side of the first extension piece (3011); a first hole groove (3012) is provided on one side of the first extension piece (3011) on the first column (301); The second extension piece (3021) is an arc-shaped piece, and a second hole groove (3022) is provided on the inner side of the arc-shaped piece on the second column (302), and the first hole groove (3012) and the second hole groove (3022) are connected to form a needle channel cavity, and the bottom of the first core (4) extends into the needle channel cavity; the space enclosed by the first extension piece (3011), the second extension piece (3021) and the needle channel cavity is a wing core cavity, and during injection molding, the injection channel (202), the wing cavity (201) and the wing core cavity are connected.

2. A butterfly needle sheet mold according to claim 1, characterized in that: A first stop bar (3013) is provided at the top end of the first hole groove (3012) in the first column (301), and a second stop bar (3023) is provided at the bottom end of the second hole groove (3022) in the second column (302). A through hole is provided on the first stop bar (3013), and the first core (4) extends into the needle channel cavity through the through hole, and the outer wall of the first core (4) connected to the through hole is interference fit.

3. A butterfly needle sheet mold according to claim 1, characterized in that: The invention also includes a slider seat (5), wherein the slider seat (5) includes a first inclined block (501) and a second inclined block (502), wherein the first inclined block (501) is provided with a first inclined surface (5011), and the second inclined block (502) is provided with a second inclined surface (5021); the left side of the first cavity slider (1) is a third inclined surface (102) that cooperates with the first inclined surface (5011), and the right side of the second cavity slider (2) is a fourth inclined surface (204) that cooperates with the second inclined surface (5021); the first cavity slider (1) and the second cavity slider (2) are both provided on the inner side of the slider seat (5), and both slide up and down along the inner side of the slider seat (5).

4. A butterfly needle sheet mold according to claim 3, characterized in that: The slider seat (5) also includes a first track block (503) and a second track block (504); a track (205) is provided on at least one side of the first cavity slider (1) and the second cavity slider (2); a track (50311) matching the track (205) is provided on the inner side of the first track block (503) and / or the second track block (504); the first cavity slider (1) and the second cavity slider (2) both slide up and down along the track (50311) via the track (205).

5. A butterfly needle sheet mold according to claim 3, characterized in that: It also includes a limit assembly (6), a vertical groove (50211) is opened on the second inclined surface (5021) of the second inclined block (502), one end of the limit assembly (6) is arranged in the second cavity slider (2), and the other end extends out of the fourth inclined surface (204) and extends into the vertical groove (50211).

6. A butterfly needle sheet mold according to claim 5, characterized in that: The second cavity slider (2) is provided with at least one first slot body (206) and a second slot body (207) provided thereunder; the limiting assembly (6) is provided in the first slot body (206) and the second slot body (207); the limiting assembly (6) comprises a sliding top column (601) located in the first slot body (206) and a limiting member (602) located in the second slot body (207); one end of the sliding top column (601) extends from the first slot body (206) into the vertical slot (50211) and can move up and down along the vertical slot (50211); a limiting slot (6011) is provided on the sliding top column (601); one end of the limiting member (602) extends from the second slot body (207) into the limiting slot (6011).

7. A butterfly needle sheet mold according to claim 1, characterized in that: It also includes a Latin (7), wherein a first groove (103) is provided at the bottom of the contact surface between the first cavity slider (1) and the second cavity slider (2), and the top end of the Latin (7) is connected to the inner side of the first groove (103).

8. A butterfly needle sheet mold according to claim 1, characterized in that: It also includes a slider ejector rod (8), and the first cavity slider (1) and the second cavity slider (2) are both provided with an inclined hole groove (104), and the slider ejector rod (8) is connected to the inclined hole groove (104) and is used to push the first cavity slider (1) and the second cavity slider (2) downward.

9. A butterfly needle piece mold according to claim 1, characterized in that: It also comprises a limiting block (9); a second groove is provided at the bottom of the first cavity module or / and the second cavity module, and the limiting block (9) abuts against the second groove.

10. A butterfly needle piece mold according to claim 4, characterized in that: The first track block (503) is provided with a track surface (5031) on which the track (50311) is provided. Two limiting tracks (50312) are respectively provided at both ends of the track surface (5031). The two limiting tracks (50312) are respectively abutted against the same side surfaces of the first inclined block (501) and the second inclined block (502).

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