Medical needle tube plastic mold

Abstract

The utility model discloses a medical needle tube plastic mold, which relates to the technical field of injection molds and comprises an upper mold and two lower molds, the two lower molds are symmetrically arranged and are both arranged below the upper mold, a mold cavity is formed in the middle of the inner side of each lower mold, and the mold cavity is communicated with the lower mold. And a mold core is fixedly arranged in the middle of the lower surface of the upper mold. According to the injection mold, the upper mold and the lower molds are arranged, the two lower molds can slide below the upper mold, the mold cavities are formed in the inner sides of the lower molds, the mold core is arranged in the middle of the lower surface of the upper mold, and the mold core is matched with the mold cavities, so that injection molding of the needle tube can be achieved, and after the needle tube is formed, the two lower molds slide horizontally and are separated; and the demolding efficiency of the needle tube product is ensured, and meanwhile, the movement range between the lower mold and the upper mold is reduced, so that the production of subsequent products is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection mold technical field, especially a medical needle tube plastic mold. BACKGROUND

[0002] Medical treatment is an important part of our life, and injection needle tube is an essential component in medical equipment. Due to the advantages of convenient and safe and sanitary, injection needle tube has been widely used in medical industry. Injection needle tube is generally processed by injection molding method. The shape and size of injection molding product are various, and the size is accurately controllable. The injection mold process flow is generally divided into: clamping, shooting glue, pressure maintaining, cooling, mold opening and product taking out and other steps.

[0003] Such as the disclosure number for CN214773832U a kind of medical injection needle tube injection mold, it includes upper die and lower die, cooling sandwich is equipped in the die wall of lower die, multiple prefabricated baffle are transversely separated in cooling sandwich, prefabricated baffle has multiple through-holes, the through-hole aperture of prefabricated baffle located in the upstream of cooling sandwich is less than the through-hole aperture of prefabricated baffle located in the downstream of cooling sandwich, the water of cooling sandwich is shunted into multiple small tributaries by the through-hole on prefabricated baffle, its instantaneous flow rate accelerates, has the propelling effect to next water flow;The accelerated water flow can increase the irregular motion degree inside water flow, accelerate the convection inside cooling water, accelerate the transfer of heat in cooling water, and cooling speed accelerates. The present application has the effect of shortening cooling time and improving work efficiency.

[0004] The above technical scheme has some problems in actual application process. When the needle tube product in the technical scheme is demolded after forming, the product needs to be pulled out of the mold, which requires the mold to be completely separated. The separation and assembly of the mold will have a certain impact on the subsequent production efficiency.

[0005] Therefore, it is necessary to invent a medical needle tube plastic mold to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a medical needle tube plastic mold to solve the problems raised in the above background.

[0007] To achieve the above object, the utility model provides the following technical scheme: A medical needle tube plastic mould, including upper die and lower die, the lower die is provided with two, two the lower die symmetry sets up, and two lower die all set up in the lower of upper die, the inside middle part of lower die is equipped with mould cavity, the lower surface middle part of upper die is fixedly provided with mould core, and mould core corresponds with mould cavity, the middle part of mould core is equipped with feed slot, the groove bottom of feed slot is equipped with feed hole, the feed hole is equipped with a plurality of, and a plurality of feed hole is around setting, the slot mouth of feed slot is fixedly provided with feed pipe, the inside of mould core is equipped with flow guide groove, and flow guide groove sets up as spiral structure, the upper surface of upper die is equipped with two flow guide pipes, and the bottom of two flow guide pipes extends to the inside two ends of flow guide groove respectively.

[0008] Preferably, the top end of the mold cavity is provided with an extension cavity.

[0009] Preferably, the lower surface of the upper mold is provided with a sliding groove at both ends, and the upper surface of the lower mold is provided with a sliding block fixedly arranged at both ends, and the sliding block is arranged in the sliding groove.

[0010] Preferably, the sliding groove is provided with an extension groove at both sides, and the sliding block is provided with an extension block fixedly arranged at both sides, and the extension block is arranged in the extension groove.

[0011] Preferably, the sliding groove is provided with a positioning block fixedly arranged in the middle.

[0012] Preferably, the feed hole is provided as a downward inclined structure.

[0013] The utility model discloses the technical effect and advantage:

[0014] 1. The utility model discloses a upper die and lower die are seted up, and the lower die is provided with two, and two lower die can slide in the lower of upper die, set up mould cavity in the inside of lower die, set up mould core in the lower surface middle part of upper die, and mould core cooperates with mould cavity, can realize the injection molding processing of needle tube, and two lower dies are separated after the horizontal sliding of needle tube in the forming, can realize the demoulding of needle tube, guarantee the demoulding efficiency of needle tube product while reducing the movement range between lower die and upper die, thereby facilitate the production of subsequent product.

[0015] 2. The utility model discloses a feed slot is seted up in the inside of mould core, and the bottom of feed slot is provided with a plurality of inclined feed holes, and a plurality of feed holes cooperate, can realize the quick injection of raw material after melting, thereby can promote injection efficiency, set up the flow guide groove of spiral structure in the inside of mould core, and the inside of flow guide groove can flow refrigerant, to realize the quick cooling of product, thereby facilitate the demoulding of product. DRAWINGS

[0016] Figure 1The overall structure schematic diagram of the utility model.

[0017] Figure 2 The overall structure mold opening state schematic diagram of the utility model.

[0018] Figure 3 The overall structure section view schematic diagram of the utility model.

[0019] Figure 4 The upper die structure schematic diagram of the utility model.

[0020] In the figure: 1, upper die;2, lower die;3, die cavity;4, die core;5, feed groove;6, feed hole;7, feed pipe;8, flow guide groove;9, flow guide pipe;10, extension cavity;11, chute;12, sliding block;13, extension groove;14, extension block;15, positioning block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] The utility model provides a kind of medical needle tube plastic mould as Figures 1-4 As shown in formula, including upper die 1 and lower die 2, two lower dies 2 are provided, two lower dies 2 are symmetrically arranged, and two lower dies 2 are arranged below upper die 1, and die cavity 3 is formed in the inner side middle part of lower die 2, and die core 4 is fixedly arranged in the middle part of the lower surface of upper die 1, and die core 4 corresponds to die cavity 3;

[0023] Specifically, feed groove 5 is formed in the middle part of die core 4, feed hole 6 is formed in the groove bottom of feed groove 5, multiple feed holes 6 are arranged, and multiple feed holes 6 are arranged in a ring, feed hole 6 is arranged as downward inclined structure, and the arrangement of inclined structure facilitates the injection of raw materials, and the raw materials after melting are injected into feed groove 5 through feed pipe 7, and the raw materials enter between die cavity 3 and die core 4 through feed hole 6 at the bottom end of feed groove 5, and are cooled and formed between die cavity 3 and die core 4, feed pipe 7 is fixedly arranged at the notch of feed groove 5, flow guide groove 8 is formed in the inside of die core 4, and flow guide groove 8 is arranged as spiral structure, two flow guide pipes 9 are arranged through the upper surface of upper die 1, and the bottom ends of two flow guide pipes 9 extend to the inside of both ends of flow guide groove 8 respectively, and refrigerant enters flow guide groove 8 through flow guide pipe 9 and flows in flow guide groove 8.

[0024] More specifically, extension cavity 10 is formed in the top end of die cavity 3, and extension cavity 10 is used for forming the top of needle tube.

[0025] And, the lower surface of the upper die 1 both ends are provided with a chute 11, the upper surface of the lower die 2 both ends are fixedly provided with a sliding block 12, and the sliding block 12 is arranged in the inside of the chute 11, both sides of the chute 11 are provided with an extension slot 13, both sides of the sliding block 12 are fixedly provided with an extension block 14, and the extension block 14 is arranged in the inside of the extension slot 13, the middle of the chute 11 is fixedly provided with a positioning block 15, the positioning block 15 is used for limiting the sliding range of the sliding block 12, so that the position accuracy of the lower die 2 after the die closing can be guaranteed.

[0026] The working principle of the utility model is as follows:

[0027] When the device is used, the two lower dies 2 slide below the upper die 1 until the two lower dies 2 complete die closing, then the melted raw material is injected into the feeding groove 5 through the feeding pipe 7, the raw material enters between the mold cavity 3 and the mold core 4 through the feeding hole 6 at the bottom end of the feeding groove 5, and is cooled and formed between the mold cavity 3 and the mold core 4, in this process, the coolant enters the flow guide groove 8 through the flow guide pipe 9 and flows in the flow guide groove 8, the spiral structure of the flow guide groove 8 can improve the contact area of the coolant and the mold core 4, so as to improve the heat exchange efficiency of the coolant and the product, so as to improve the forming speed of the product, after the product is formed, the two lower dies 2 slide below the upper die 1, so that the two lower dies 2 are away from each other, at this time, the product is separated from the mold cavity 3, at this time, the product slides from the outside of the mold core 4 under the action of gravity, so as to realize the rapid demolding of the product.

[0028] Finally, it should be pointed out that: the above only for preferred embodiment of the utility model has described, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A plastic mold for a medical needle tube, comprising an upper mold (1) and a lower mold (2), characterized in that: There are two lower molds (2), the two lower molds (2) are symmetrically arranged, and the two lower molds (2) are both arranged below the upper mold (1), a mold cavity (3) is provided in the middle of the inner side of the lower mold (2), a mold core (4) is fixedly provided in the middle of the lower surface of the upper mold (1), and the mold core (4) corresponds to the mold cavity (3), a feed trough (5) is provided in the middle of the mold core (4), and a feed hole (6) is provided through the bottom of the feed trough (5), and a plurality of feed holes (6) are provided, and the plurality of feed holes (6) are arranged in a surrounding manner, a feed pipe (7) is fixedly provided at the notch of the feed trough (5), a guide groove (8) is provided inside the mold core (4), and the guide groove (8) is arranged as a spiral structure, two guide pipes (9) are provided through the upper surface of the upper mold (1), and the bottom ends of the two guide pipes (9) extend to the two ends of the inner part of the guide groove (8) respectively.

2. The medical needle tube plastic mold according to claim 1, characterized in that: An extension cavity (10) is provided at the top end of the mold cavity (3).

3. The medical needle tube plastic mold according to claim 2, characterized in that: Both ends of the lower surface of the upper mold (1) are provided with sliding grooves (11), and both ends of the upper surface of the lower mold (2) are fixedly provided with sliders (12), and the sliders (12) are arranged inside the sliding grooves (11).

4. The medical needle tube plastic mold according to claim 3, characterized in that: Extension grooves (13) are provided on both sides of the slide groove (11), and extension blocks (14) are fixedly provided on both sides of the slider (12), and the extension blocks (14) are arranged inside the extension grooves (13).

5. The medical needle tube plastic mold according to claim 4, characterized in that: A positioning block (15) is fixedly provided in the middle of the slide groove (11).

6. The medical needle tube plastic mold according to claim 5, characterized in that: The feed hole (6) is configured as a downwardly inclined structure.

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