Mold suitable for injection molding of medical supplies

Abstract

The utility model relates to a mold suitable for injection molding of medical supplies, which comprises a male mold and a female mold, the bottom surface of the male mold is provided with a mold core, the bottom surface of the female mold is connected with a mold bottom plate, the top surface of the male mold is fixedly connected with a fixing pipe, the bottom end of the fixing pipe penetrates through the male mold and the mold core, and the outer side of the bottom end of the fixing pipe is fixedly provided with a plurality of nozzles. A female mold is arranged on the bottom face of the male mold, a mold cavity is formed in the top face of the female mold, a connecting cavity is formed in the bottom face of the mold cavity, a collecting assembly is further arranged on the top face of the mold bottom plate, the collecting assembly communicates with the connecting cavity through a connecting pipe, and the collecting assembly is used for collecting a release agent accumulated in the connecting cavity. According to the technical scheme, a release agent sprayed on the inner wall of the mold cavity flows towards the bottom along the inner wall of the mold cavity and is accumulated in the connecting cavity, and the release agent accumulated in the connecting cavity flows into the collecting assembly again through the connecting pipe, so that the mold can be repeatedly used, the cost is reduced, and the injection molding quality of the medical supply mold can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vertical injection mold technical field, concretely relates to a mold suitable for medical supplies injection. BACKGROUND

[0002] Medical supplies are close to us, from the small aspect, the articles needed for bandaging wounds, medicine bottles, plastics, transparent bottles, plastic bottles, eye drops bottles, needle tubes, trays and liquid medicine bottles are all in the category of medical supplies, from the large aspect, to the large-scale instrument products needed for surgery, some instrument products for fitness are also included, in general, medical supplies are auxiliary instruments or articles used in medicine. At present, the plastic parts in medical supplies are usually made by blow molding, compression molding and injection molding, among which the production efficiency of injection molding is higher, and for flat tools such as needle tubes and trays, compression molding is usually used.

[0003] At present, when the medical injection product forming mold is actually used, in order to make the demolding process simple, a release agent is generally applied to the inner wall of the mold, which can prevent the product from adhering to the mold. In the prior art, the inner wall of the mold is usually coated with a release agent manually after the product is demolded. This method is troublesome and has low coating efficiency, which will affect the subsequent processing efficiency, and the release agent cannot be evenly coated on the inner wall of the mold during manual coating.

[0004] In order to solve the above technical problems, Chinese patent 202321160120.9 discloses a medical injection needle tube rapid forming mold, which specifically relates to the technical field of needle tube mold and comprises a support plate, a lower mold and an upper mold. The lower mold and the upper mold form a cavity therebetween. The upper mold is fixedly provided with a fixed tube at the top end. A columnar groove is formed in the bottom of the lower mold. A plurality of nozzles are fixedly arranged on the outer side of the bottom end of the fixed tube. Two connecting blocks are fixedly arranged on the outer end of the upper mold. Two first hydraulic cylinders are arranged on the top end of the support plate.

[0005] Although the above technical solution simplifies the coating process of the release agent on the inner wall of the lower mold and improves the efficiency by allowing the movable nozzles to spray the release agent onto the inner wall of the lower mold as the upper mold rises, the release agent as a liquid has the characteristic of natural flow. During the spraying process, the release agent tends to flow and accumulate along the inner wall of the lower mold to the bottom, thereby occupying the columnar groove space inside the lower mold for forming the needle tube. This accumulation phenomenon will interfere with the subsequent injection mold forming process and adversely affect the manufacturing quality of the needle tube. UTILITY MODEL CONTENTS

[0006] Therefore, the utility model aims to provide a mold suitable for medical supplies injection to solve the problems raised in the background art.

[0007] The utility model discloses a following technical scheme realizes:

[0008] A mould suitable for medical supplies injection molding, including male mould and female mould, the bottom surface of male mould is provided with mould core, the bottom surface of female mould is connected with mould bottom plate, the top surface of male mould is provided with fixedly connected with fixed pipe, and fixed pipe penetrates the bottom end and penetrates male mould and mould core, a plurality of spray heads are fixedly arranged on the outside of the bottom end of fixed pipe, the bottom surface of male mould is provided with the top surface of female mould and is provided with mould cavity, and the bottom surface of mould cavity is provided with connecting cavity, the top surface of mould bottom plate is also provided with collection assembly, and the connecting cavity is communicated through connecting pipe between collection assembly and connecting cavity, and collection assembly is used for collecting the release agent accumulated in connecting cavity.

[0009] Further, the collection assembly includes a liquid accumulation tank and a water pump, the water pump is installed on the top surface of the liquid accumulation tank, the inlet of the water pump is connected with a liquid suction pipe, the liquid suction pipe is in communication with the inside of the liquid accumulation tank, the outlet of the water pump is connected with a liquid outlet pipe, and the end of the liquid outlet pipe away from the water pump is in communication with the fixed pipe.

[0010] Further, a plurality of guide holes are formed on the male mould, the top surface of the female mould is connected with a guide rod, one end of the guide rod is connected with the female mould, and the other end extends upward and is slidingly fitted in the guide hole.

[0011] Further, the first pushing mechanism and the second pushing mechanism are further included, the first pushing mechanism and the second pushing mechanism are respectively installed on the male mould and the female mould, and are respectively used for pushing the mould formed on the male mould or the female mould.

[0012] Further, the first pushing mechanism includes a hydraulic rod and a push plate, the hydraulic rod is installed on the upper die plate and located at the side of the fixed pipe, the top end of the male mould is provided with a communication port, the communication port longitudinally penetrates the upper die plate, the bottom end of the hydraulic rod extends into the inside of the communication port, the top surface of the push plate is fixedly connected with the bottom end of the hydraulic rod, and the bottom surface of the push plate is flush with the bottom end of the communication port when the hydraulic rod is in a contraction state.

[0013] Further, the second pushing mechanism includes a needle bottom plate and a needle main body, the bottom surface of the female mould is provided with two symmetrically distributed mould feet, the needle bottom plate is slidingly fitted between the two mould feet through an elastic support assembly, the needle main body is fixedly installed on the top surface of the needle bottom plate, a connecting hole matched with the needle main body is formed in the mould cavity, and the upper end of the needle main body extends out of the connecting hole when the elastic support assembly is in a free stretching state.

[0014] Further, the opposite surfaces of the two mould feet are provided with sliding grooves, the opposite sides of the needle bottom plate are connected with sliding blocks slidingly fitted in the sliding grooves, the elastic support assembly includes a guide rod and a supporting spring, the two ends of the supporting spring are respectively connected with the bottom surface of the sliding block and the bottom surface of the inner wall of the sliding groove, the guide rod is located in the supporting spring, the guide rod is of a telescopic structure, and the upper and lower ends of the guide rod are respectively connected with the bottom surface of the inner wall of the sliding groove.

[0015] Further, the female mold is provided with a positioning hole longitudinally penetrating the female mold, the male mold bottom surface is connected with a fixing rod corresponding to the positioning hole, the ejector pin bottom plate top surface is connected with a limiting column, one end of the limiting column is connected with the ejector pin bottom plate top surface, and the other end extends upward and is slidingly fitted in the positioning hole.

[0016] The utility model discloses beneficial effect lies in:

[0017] The mold suitable for medical supplies injection can make the release agent sprayed on the inner wall of the mold cavity flow along the inner wall of the mold cavity to the bottom and accumulate in the connecting cavity, and the release agent accumulated in the connecting cavity can flow into the collecting assembly again through the connecting pipe, so that the release agent can be reused to reduce the cost, and the injection quality of the medical supplies mold can be improved.

[0018] The other advantages, objects and features of the utility model will be described in the subsequent specification to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained by the following specification. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the perspective view (first visual angle) of the utility model;

[0020] Figure 2 It is the perspective view (first visual angle) of the utility model;

[0021] Figure 3 It is the public mold and female mold separate structure schematic view of the utility model;

[0022] Figure 4 It is the public mold and female mold closed structure schematic view of the utility model;

[0023] Figure 5 It is the Figure 4 It is the local enlarged view of A of the utility model.

[0024] In the drawing: 1, mold bottom plate;2, rack;3, reciprocating push mechanism;4, male mold;5, mold core;6, fixed pipe;7, spray head;8, female mold;9, mold cavity;10, connecting cavity;11, connecting pipe;

[0025] 12, collecting assembly;1201, liquid accumulation tank;1202, water pump;

[0026] 13, guide hole;14, guide column;15, injection port;

[0027] 16, first push mechanism;1601, hydraulic rod;1602, push plate;1603, communication port;

[0028] 17. Second pushing mechanism; 1701. Thimble bottom plate; 1702. Thimble main body; 1703. Connection hole;

[0029] 18. Mold leg; 19. Slide groove; 20. Slide block;

[0030] 21. Elastic support assembly; 2101. Guide rod; 2102. Support spring;

[0031] 22. Positioning hole; 23. Limiting column; 24. Fixing rod. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. The components of the embodiments of the utility model described and shown in the drawings can be arranged and designed in various different configurations.

[0033] Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the claimed utility model, but only represents selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the utility model.

[0034] It should be noted that: similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0035] In the above description of the utility model, it should be noted that the orientation or position relationship indicated by the terms "one side", "the other side" and the like is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0036] In addition, the terms "same" and the like do not mean that the components must be absolutely the same, but there can be slight differences. The term "perpendicular" only means that the positional relationship between the components is more perpendicular than "parallel", and does not mean that the structure must be completely perpendicular, but can be slightly inclined.

[0037] Please refer to Figures 1-5 The utility model provides a technical scheme: a mould suitable for medical supplies injection moulding, including male die 4 and female die 8, the bottom surface of male die 4 is provided with mould core 5, the bottom surface of female die 8 is connected with mould bottom plate 1, the top surface of male die 4 is provided with fixedly connected with fixed pipe 6, fixed pipe 6 penetrates the bottom end and penetrates male die 4 and mould core 5, the bottom end outside fixed pipe 6 is fixedly provided with a plurality of sprayers 7, the bottom surface of male die 4 is provided with female die 8 top surface and is opened mould cavity 9, the bottom surface of mould cavity 9 is opened and is connected with connecting cavity 10, the top surface of mould bottom plate 1 is also provided with collection subassembly 12, and collection subassembly 12 is communicated with connecting cavity 10 through connecting pipe 11, and collection subassembly 12 is used to collect the release agent accumulated in connecting cavity 10.

[0038] In the scheme, the top surface of the mould bottom plate 1 is provided with a rack 2, the rack 2 is provided with a reciprocating pushing mechanism 3, one end of the reciprocating pushing mechanism 3 is connected with the rack 2, the other end extends downward and is connected with the male die 4, the output direction of the reciprocating pushing mechanism 3 is the direction of the female die 8, when the reciprocating pushing mechanism 3 reciprocates, it drives the male die 4 and the mould core 5 to reciprocate synchronously, the reciprocating pushing mechanism 3 can be a pneumatic cylinder or a hydraulic cylinder; and the male die 4 is provided with an injection port 15, the injection port 15 does not correspond to the horizontal plate on the rack 2, and the injection port 15 penetrates the male die 4 and corresponds to the mould cavity 9; the diameter of the bottom surface of the mould core 5 is greater than the diameter of the connecting cavity 10.

[0039] In use, the staff first starts the reciprocating pushing mechanism 3, which drives the male die 4 to move downward until the bottom surface of the male die 4 abuts against the top surface of the female die 8, the mould core 5 enters the mould cavity 9, forming a cavity of the shape of the mould to be made, then hot plastic material is injected into the mould cavity 9 through the injection port 15, when the mould in the mould cavity 9 is formed and cooled, the reciprocating pushing mechanism 3 is controlled to retract, so that the male die 4 and the mould core 5 are separated from the female die 8 and the mould cavity 9, and before the reciprocating pushing mechanism 3 retracts upward, the collection subassembly 12 and the fixed pipe 6 are connected through a pipeline, and the release agent in the collection subassembly 12 is extracted, the release agent enters the fixed pipe 6, and then is sprayed from the sprayers 7, the release agent sprayed from the sprayers 7 uniformly covers the inner wall of the mould cavity 9, and after the mould core 5 is completely removed from the mould cavity 9, the sprayers 7 are closed, the release agent sprayed on the inner wall of the mould cavity 9 flows along the inner wall of the mould cavity 9 to the bottom and accumulates in the connecting cavity 10, the release agent accumulated in the connecting cavity 10 flows into the collection subassembly 12 through the connecting pipe 11 again, achieving the effect of reuse.

[0040] The release agent sprayed on the inner wall of the mould cavity 9 flows along the inner wall of the mould cavity 9 to the bottom and accumulates in the connecting cavity 10, and the release agent accumulated in the connecting cavity 10 flows into the collection subassembly 12 through the connecting pipe 11 again, which can not only be reused to reduce cost, but also improve the injection quality of the medical product mould.

[0041] In the embodiment, the collecting assembly 12 comprises a sump 1201 and a water pump 1202, the water pump 1202 is installed on the top surface of the sump 1201, the inlet of the water pump 1202 is connected with a suction pipe, the suction pipe is communicated with the inside of the sump 1201 (this is a mature technology in the prior art, therefore, the drawing of the present application does not show it), the outlet of the water pump 1202 is connected with a liquid outlet pipe, the end of the liquid outlet pipe away from the water pump 1202 is communicated with the fixed pipe 6.

[0042] In use, when the mold is formed, the reciprocating pushing mechanism 3 is controlled to retract, and the water pump 1202 is started at the same time, the water pump 1202 draws the release agent in the sump 1201 out through the suction pipe, and inputs the release agent into the fixed pipe 6 through the liquid outlet pipe, and sprays the release agent out through the spray head 7 to coat the inner wall of the mold cavity 9, so that the coating of the release agent on the inner wall of the mold cavity 9 is simple and convenient, and the coating efficiency is high.

[0043] The model of the water pump is IHF50-32-125 IH.

[0044] In the embodiment, a plurality of guide holes 13 are formed on the male mold 4, and a guide column 14 is connected to the top surface of the female mold 8, one end of the guide column 14 is connected to the female mold 8, and the other end extends upward and is slidingly fitted in the guide hole 13.

[0045] In the movement of the male mold 4 towards or away from the female mold 8, the male mold 4 always slides on the guide column 14 through the guide hole 13, so that the orientation of the core 5 is always parallel to the movement of the mold cavity 9, and the docking accuracy of the male mold 4 and the female mold 8 is improved.

[0046] In the embodiment, a first pushing mechanism 16 and a second pushing mechanism 17 are further included, the first pushing mechanism 16 and the second pushing mechanism 17 are respectively installed on the male mold 4 and the female mold 8, and are respectively used to push the mold formed on the male mold 4 or the female mold 8.

[0047] When the mold is formed, the male mold 4 moves upward away from the female mold 8, the formed mold is adhered to the core 5 on the bottom surface of the male mold 4, or is left in the mold cavity 9 on the female mold 8, therefore, the first pushing mechanism 16 or the second pushing mechanism 17 can be used to eject the mold adhered to the core 5 or left in the mold cavity 9 to achieve the purpose of demolding, and when the mold is left in the mold cavity 9, the mold can be taken out by the staff and then sprayed with release agent.

[0048] In the embodiment, the first pushing mechanism 16 comprises a hydraulic rod 1601 and a pushing plate 1602. The hydraulic rod 1601 is installed on the upper die plate and located at the side of the fixed tube 6. The upper end of the male die 4 is provided with a communication port 1603 which vertically penetrates the upper die plate. The bottom end of the hydraulic rod 1601 extends into the communication port 1603. The top surface of the pushing plate 1602 is fixedly connected to the bottom end of the hydraulic rod 1601. When the hydraulic rod 1601 is in the contracted state, the bottom surface of the pushing plate 1602 is flush with the bottom end of the communication port 1603.

[0049] When the shaped die is adhered to the die core 5, the hydraulic rod 1601 is started to drive the pushing plate 1602 to move downward. The pushing plate 1602 pushes the die to move downward, so that the die is lifted from the bottom end of the upper die core 5, thereby completing the demolding work.

[0050] In the embodiment, the second pushing mechanism 17 comprises a ejector pin bottom plate 1701 and an ejector pin body 1702. The bottom surface of the female die 8 is provided with two die pins 18 which are symmetrically distributed. The ejector pin bottom plate 1701 is slidingly fitted between the two die pins 18 through the elastic support assembly 21. The ejector pin body 1702 is fixedly installed on the top surface of the ejector pin bottom plate 1701. The mold cavity 9 is provided with a connecting hole 1703 which is adapted to the ejector pin body 1702. When the elastic support assembly 21 is in the free stretching state, the upper end of the ejector pin body 1702 extends out of the connecting hole 1703.

[0051] When the shaped die remains in the mold cavity 9, the bottom surface of the male die 4 is in contact with the top surface of the female die 8. The male die 4 applies pressure to the ejector pin body 1702. At the same time, the ejector pin body 1702 transmits the pressure to the elastic support assembly 21, so that the elastic support assembly 21 changes from the free stretching state to the contracted state. The upper end of the ejector pin body 1702 slides downward along the connecting hole 1703 until the upper end of the ejector pin body 1702 is flush with the top surface of the connecting hole 1703. When the die is shaped, the reciprocating pushing mechanism 3 moves upward. The pressure applied to the ejector pin body 1702 gradually decreases until it disappears. At the same time, the elastic support assembly 21 changes from the contracted state to the free stretching state. The upper end of the ejector pin body 1702 slides upward along the connecting hole 1703 to eject the shaped die in the mold cavity 9.

[0052] In the embodiment, the opposite surfaces of the two die pins 18 are provided with sliding grooves 19. The opposite sides of the ejector pin bottom plate 1701 are connected with sliding blocks 20 which slidingly fit with the sliding grooves 19. The elastic support assembly 21 comprises a guide rod 2101 and a supporting spring 2102. The two ends of the supporting spring 2102 are connected with the bottom surface of the sliding block 20 and the inner wall bottom surface of the sliding groove 19, respectively. The guide rod 2101 is located in the supporting spring 2102. The guide rod 2101 is of telescopic structure. The upper and lower ends of the guide rod 2101 are connected with the inner wall bottom surface of the sliding groove 19, respectively.

[0053] When the ejector body 1702 is subjected to pressure, the pressure is transmitted to the supporting spring 2102 located in the sliding groove 19, and at the same time, the ejector bottom plate 1701 is lowered synchronously with the contraction of the supporting spring 2102, the lowering of the ejector bottom plate 1701 drives the sliding block 20 to slide downward in the sliding groove 19, the supporting spring 2102 is provided with a guide rod 2101, which can be limited when the supporting spring 2102 is contracted, and the guide rod 2101 is a telescopic structure and can be contracted with the supporting spring 2102, so as to avoid the bending of the supporting spring 2102 when it is contracted.

[0054] In the embodiment, the female mold 8 is provided with a positioning hole 22 longitudinally penetrating the female mold 8, the male mold 4 is connected with a fixed rod 24 corresponding to the positioning hole 22 at the bottom surface, and the ejector bottom plate 1701 is connected with a limiting column 23 at the top surface, one end of the limiting column 23 is connected with the top surface of the ejector bottom plate 1701, and the other end extends upward and is slidably fitted in the positioning hole 22.

[0055] When the reciprocating pushing mechanism 3 drives the male mold 4 to move downward, before the bottom surface of the male mold 4 abuts against the top surface of the female mold 8, the fixed rod 24 at the bottom surface of the male mold 4 enters the positioning hole 22 on the female mold 8 and slides downward along the positioning hole 22 until the bottom end of the fixed rod 24 abuts against the top end of the limiting column 23 and exerts pressure on the limiting column 23, and at the same time, the limiting column 23 transmits the pressure to the ejector bottom plate 1701, and the downward movement of the ejector bottom plate 1701 transmits the force to the elastic supporting assembly 21 for buffering.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited, although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A mold suitable for injection molding of medical supplies, comprising a male mold (4) and a female mold (8), the bottom surface of the male mold (4) is provided with a mold core (5), and the bottom surface of the female mold (8) is connected with a mold bottom plate (1), characterized in that: The top surface of the male mold (4) is provided with a fixed pipe (6) fixedly connected, the fixed pipe (6) penetrates the bottom end and penetrates the male mold (4) and the mold core (5), a plurality of nozzles (7) are fixedly arranged on the outside of the bottom end of the fixed pipe (6), the bottom surface of the male mold (4) is provided with the top surface of the female mold (8) which is provided with a mold cavity (9), the bottom surface of the mold cavity (9) is provided with a connecting cavity (10), and the top surface of the mold bottom plate (1) is further provided with a collecting assembly (12); the collecting assembly (12) and the connecting cavity (10) are communicated through a connecting pipe (11), and the collecting assembly (12) is used for collecting the release agent accumulated in the connecting cavity (10).

2. The mold for injection molding medical supplies according to claim 1, wherein: The collecting assembly (12) comprises a liquid accumulation tank (1201) and a water pump (1202), the water pump (1202) is installed on the top surface of the liquid accumulation tank (1201), the inlet of the water pump (1202) is connected with a liquid pumping pipe, the liquid pumping pipe is communicated with the inside of the liquid accumulation tank (1201), the outlet of the water pump (1202) is connected with a liquid outlet pipe, and the liquid outlet pipe is communicated with the fixed pipe (6) at the end away from the water pump (1202).

3. The mold for injection molding medical supplies according to claim 1, wherein: A plurality of guide holes (13) are arranged on the male mold (4), the top surface of the female mold (8) is connected with a guide column (14), one end of the guide column (14) is connected with the female mold (8), and the other end extends upward and is slidably matched in the guide hole (13).

4. The mold for injection molding medical products according to any one of claims 1-3, wherein: Further comprising a first pushing mechanism (16) and a second pushing mechanism (17), the first pushing mechanism (16) and the second pushing mechanism (17) are respectively installed on the male mold (4) and the female mold (8), and are respectively used for pushing the mold formed by adhering on the male mold (4) or the female mold (8).

5. A mold suitable for injection molding of medical articles according to claim 4, wherein: The first pushing mechanism (16) comprises a hydraulic rod (1601) and a push plate (1602), the hydraulic rod (1601) is installed on the upper mold plate and located at the side of the fixed pipe (6), the top end of the male mold (4) is provided with a communicating port (1603), the communicating port (1603) penetrates the upper mold plate longitudinally, the bottom end of the hydraulic rod (1601) extends into the inside of the communicating port (1603), and the top surface of the push plate (1602) is fixedly connected with the bottom end of the hydraulic rod (1601); when the hydraulic rod (1601) is in a contraction state, the bottom surface of the push plate (1602) is flush with the bottom end of the communicating port (1603).

6. The mold for injection molding medical supplies according to claim 4, wherein: The second pushing mechanism (17) comprises a thimble bottom plate (1701) and a thimble main body (1702), the bottom surface of the female mold (8) is provided with two mold feet (18) which are symmetrically distributed, the thimble bottom plate (1701) is slidably matched between the two mold feet (18) through an elastic support assembly (21), the thimble main body (1702) is fixedly installed on the top surface of the thimble bottom plate (1701), a connecting hole (1703) matched with the thimble main body (1702) is arranged in the mold cavity (9), and when the elastic support assembly (21) is in a free stretching state, the upper end of the thimble main body (1702) extends out of the connecting hole (1703).

7. A mold suitable for injection molding of medical articles according to claim 6, characterized in that: The opposite faces of the two said mold feet (18) are provided with sliding grooves (19), the opposite sides of the ejector pin bottom plate (1701) are connected with sliding blocks (20) which are in sliding cooperation with the sliding grooves (19), the elastic supporting assembly (21) comprises a guide rod (2101) and a supporting spring (2102), the two ends of the supporting spring (2102) are connected with the bottom surface of the sliding block (20) and the bottom surface of the inner wall of the sliding groove (19) respectively, the guide rod (2101) is located in the supporting spring (2102), the guide rod (2101) is of telescopic structure, and the upper and lower ends of the guide rod (2101) are connected with the bottom surface of the inner wall of the sliding groove (19) respectively.

8. The mold for injection molding medical supplies according to claim 6, wherein: The female mold (8) is provided with a positioning hole (22), the positioning hole (22) longitudinally penetrates the female mold (8), the bottom surface of the male mold (4) is connected with a fixing rod (24) corresponding to the positioning hole (22), the top surface of the ejector pin bottom plate (1701) is connected with a limiting column (23), one end of the limiting column (23) is connected with the top surface of the ejector pin bottom plate (1701), and the other end extends upward and is in sliding cooperation in the positioning hole (22).

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