CN216465924U

CN216465924U - Medical injection mold ejection mechanism

Info

Publication number: CN216465924U
Application number: CN202123330798.0U
Authority: CN
Inventors: 仇天兵
Original assignee: Nantong Tianwei Mechanical Equipment Co ltd
Current assignee: Nantong Tianwei Mechanical Equipment Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-05-10
Anticipated expiration: 2031-12-28

Abstract

The utility model belongs to the field of medical article production, and provides a medical injection mold ejection mechanism, which comprises a lower mold, an upper mold, a male mold connected on the lower mold, and a female mold arranged at the bottom of the upper mold and matched with the male mold, wherein the lower mold is internally connected with a thimble mechanism for ejecting a product, the bottom of the upper mold is connected with two pressure rods for pressing down the thimble mechanism, and the left and right side walls of the upper mold are respectively connected with a telescopic rod capable of pulling the thimble mechanism; the thimble mechanism includes: swing joint is in push pedal in the lower mould is connected on the push pedal and swing joint be in a plurality of thimbles in the convex mould, and set up the push pedal with a plurality of springs between the lower mould. The utility model discloses simple structure, and the rational utilization current power has realized ejecting action, when having guaranteed ejecting work, has reduced the loss of the energy.

Description

Medical injection mold ejection mechanism

Technical Field

The utility model relates to a medical article production field especially relates to a medical treatment injection mold ejection mechanism.

Background

The mould consists of seven systems: the device comprises a guide system, a supporting system, a molded part system, a pouring system, a cooling system, an ejection system and an exhaust system. The plastic enters the die cavity through the pouring gate by the pouring system, is cooled by the cooling system after filling and pressure maintaining, and is ejected by the ejection system of the formed part after the finished product is solidified, so that a forming period is completed.

The ejection of the product is the last link in the injection molding process, when the product is solidified in the mold, the product needs to be ejected out of the mold in an effective mode, and the quality of the ejected product finally determines the quality of the product. The existing ejection mechanism is complex in structure, a power device needs to be additionally arranged during ejection, and the energy consumption of equipment is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the background technology and providing an ejection mechanism of a medical injection mold.

The utility model provides a technical scheme as follows: a medical injection mold ejection mechanism comprises a lower mold, an upper mold, a male mold connected to the lower mold, and a female mold arranged at the bottom of the upper mold and matched with the male mold, wherein a thimble mechanism for ejecting a product is connected in the lower mold, two pressure rods for pressing the thimble mechanism are connected at the bottom of the upper mold, and telescopic rods capable of pulling the thimble mechanism are respectively connected on the left side wall and the right side wall of the upper mold;

the thimble mechanism includes: swing joint is in push pedal in the lower mould is connected on the push pedal and swing joint be in a plurality of thimbles in the convex mould, and set up the push pedal with a plurality of springs between the lower mould.

Furthermore, a movable cavity is formed in the lower die, a plurality of counter bores are formed in the male die downwards, the push plate is movably connected in the movable cavity, the ejector pin penetrates through the lower die and is movably connected in the counter bores, the top of the ejector pin is connected with an ejection piece, and the ejection piece is matched with the counter bores.

Furthermore, the left side and the right side of the top of the lower die are symmetrically provided with a movable hole, the movable hole is communicated with the movable cavity, and the pressing rod is arranged right above the movable hole.

Furthermore, a sliding groove is formed in each of the left side wall and the right side wall of the lower die, and the sliding grooves are communicated with the movable cavity.

Further, be connected with first fixed plate on the lateral wall about the push pedal respectively, the other end of first fixed plate passes the spout is protruding outside the lower mould, be connected with the second fixed plate on the lateral wall about the last mould respectively, first fixed plate with be connected with between the second fixed plate the telescopic link.

Furthermore, four corners department is connected with the gag lever post respectively on the lower mould, the tip of gag lever post passes go up mould and threaded connection has the nut.

Furthermore, the die is embedded into the bottom of the upper die, and the bottom of the die is flush with the bottom of the upper die.

Furthermore, the middle part of the upper die is provided with an injection molding port, and the injection molding port is communicated with the female die.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses an ejection mechanism through setting up thimble mechanism, utilizes the elasticity of spring, promotes the push pedal, is ejecting with goods by the thimble again, realizes ejecting action through the elasticity of spring self, and energy-conserving and safety can not cause the damage to goods suddenly energetically.

(2) The utility model discloses an ejection mechanism, through setting up tension mechanism for when the spring can't jack up the goods, utilize the die sinking power of mould, give the certain helping hand of push pedal, thereby realize ejecting action, utilize current power, give ejecting motion helping hand, realized recycling of power.

(3) The utility model discloses an ejection mechanism, through setting up the gag lever post for go up the mould when die sinking or compound die, carry out spacing direction.

(4) The utility model discloses an ejection mechanism, simple structure, and the rational utilization current power has realized ejecting action, when having guaranteed ejecting work, has reduced the loss of the energy.

Drawings

Fig. 1 is a schematic view of the overall structure of the ejection mechanism of the present invention;

fig. 2 is a right side view of the ejection mechanism of the present invention;

fig. 3 is a schematic structural diagram of the mold closing state of the ejection mechanism of the present invention;

fig. 4 is a schematic structural view of the ejection mechanism in the mold opening state;

the reference numbers are as follows: 1. the injection molding device comprises a lower die, 2, an upper die, 3, a male die, 301, a counter bore, 4, a female die, 5, a limiting rod, 6, a nut, 7, a movable cavity, 8, a push plate, 9, an ejector pin, 10, an ejector piece, 11, a spring, 12, a pressure rod, 13, a movable hole, 14, a sliding groove, 15, a first fixing plate, 16, a second fixing plate, 17, a telescopic rod, 18 and an injection molding opening.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1-4, the utility model relates to a medical injection mold ejection mechanism, which comprises a lower mold 1, an upper mold 2, a male mold 3 connected to the lower mold 1, and a female mold 4 arranged at the bottom of the upper mold 2 and matched with the male mold 3, wherein the lower mold 1 is internally connected with a thimble mechanism for ejecting a product, the bottom of the upper mold 2 is connected with two pressure rods 12 for pressing the thimble mechanism downwards, and the left and right side walls of the upper mold 2 are respectively connected with a telescopic rod 17 capable of pulling the thimble mechanism;

the thimble mechanism includes: a push plate 8 movably connected in the lower die 1, a plurality of ejector pins 9 connected to the push plate 8 and movably connected in the male die 3, and a plurality of springs 11 arranged between the push plate 8 and the lower die 1.

In the pressure lever 12 of the embodiment, when the upper die 2 is closed, the pressure lever 12 presses the push plate 8 downwards, and the top of the thimble 9 is flush with the top of the male die 3.

Referring to fig. 4, after the mold is opened, when the elastic force of the spring 11 is insufficient to eject the product, the telescopic rod 17 is stretched along with the rising of the upper mold 2, and when the telescopic rod 17 is in the maximum stroke, the upper mold 2 continues to rise, and the telescopic rod 17 pulls the push plate 8, so as to drive the ejector pin 9 to move upward to eject the product.

Preferably, a plurality of ejector pins 9 are arranged and used for determining the number of the ejector pins 9 according to the shape of the product, so that the acting force is uniform and acts on the bottom of the product, and the product is prevented from being damaged due to uneven stress.

Preferably, the side walls around the push plate 8 are respectively attached to the side walls around the lower die 1, and the springs 11 are uniformly laid at the bottom of the push plate 8, so that the push plate 8 cannot incline when moving up and down.

Furthermore, a movable cavity 7 is formed in the lower die 1, a plurality of counter bores 301 are formed in the male die 3 downwards, the push plate 8 is movably connected in the movable cavity 7, the ejector pin 9 penetrates through the lower die 1 and is movably connected in the counter bores 301, the top of the ejector pin 9 is connected with an ejector piece 10, and the ejector piece 10 is matched with the counter bores 301.

Preferably, when the push plate 8 is pressed down to the limit position by the pressure rod 12, the ejector 10 is matched with the counter bore 301, and the top of the ejector 10 is flush with the top of the male die 3.

Preferably, the counter bore 301 is arranged for matching with the ejection piece 10, so that the gap is reduced, and the integrity of the product is ensured.

Furthermore, the left side and the right side of the top of the lower die 1 are symmetrically provided with a movable hole 13, the movable hole 13 is communicated with the movable cavity 7, and the pressure rod 12 is arranged right above the movable hole 13.

Preferably, when the upper die 2 and the lower die 1 are closed, the pressing rod 12 pushes the pushing plate 8 to move downwards, and the ejector 10 moves downwards to be matched with the counter bore 301.

Preferably, the pressing rod 12 can move in the moving hole 13.

Specifically, the upper die 2 moves downwards to drive the pressure lever 12 to move downwards to penetrate through the movable hole 13 to abut against the push plate 8, the upper die 2 continues to move downwards, and the pressure lever 12 pushes the push plate 8 to move downwards.

Furthermore, a sliding groove 14 is respectively and inwardly arranged on the left side wall and the right side wall of the lower die 1, and the sliding groove 14 is communicated with the movable cavity 7.

Furthermore, the left side wall and the right side wall of the push plate 8 are respectively connected with a first fixing plate 15, the other end of the first fixing plate 15 penetrates through the sliding groove 14 and protrudes out of the lower die 1, the left side wall and the right side wall of the upper die 2 are respectively connected with a second fixing plate 16, and an expansion rod 17 is connected between the first fixing plate 15 and the second fixing plate 16.

Furthermore, four corners on the lower die 1 are respectively connected with a limiting rod 5, and the end of the limiting rod 5 penetrates through the upper die 2 and is in threaded connection with a nut 6.

Preferably, four limiting rods 5 limit the up-and-down movement of the upper die 2, so that the upper die 2 and the lower die 1 are parallel when the die is closed and opened.

The medical injection mold ejection mechanism of claim 1, wherein the female mold 4 is embedded in the bottom of the upper mold 2, and the bottom of the female mold 4 is flush with the bottom of the upper mold 2.

Further, the middle part of the upper die 2 is provided with an injection molding port 18, and the injection molding port 18 is communicated with the female die 4.

The working principle is as follows:

referring to fig. 1, the present invention is in a non-operating state;

referring to fig. 3, during mold closing, the upper mold 2 moves down along the limiting rod 5, the telescopic rod 17 retracts, the upper mold 2 moves down, the pressing rod 12 is driven to move down to penetrate through the movable hole 13 to abut against the push plate 8, the upper mold 2 continues to move down, the pressing rod 12 pushes the push plate 8 to move down, the spring 11 retracts, the ejector 10 is driven to move down to be matched with the counter bore 301, thermoplastic material is injected from the injection port 18, and injection molding is completed.

When the mold is opened, the upper mold 2 moves upwards, the pressure rod 12 is separated from the push plate 8, the push plate 8 rises under the elasticity of the spring 11, and the thimble 9 and the ejector 10 move upwards to eject a product; if the elastic force of the spring 11 is not enough to eject the product, referring to fig. 4, after the upper die 2 rises to the limit distance of the telescopic rod 17, the push plate 8 is still in a downward-pressing state, the upper die 2 continues to rise, the telescopic rod 17 is forced to pull the push plate 8 to move upward, the ejector pin 9 and the ejector piece 10 move upward to eject the product, and the product ejection work is completed.

The utility model discloses simple structure, and the rational utilization current power has realized ejecting action, when having guaranteed ejecting work, has reduced the loss of the energy.

It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. Furthermore, the above definitions of the various elements and methods are not limited to the specific structures, shapes, or configurations shown in the examples.

It is also noted that the illustrations herein may provide examples of parameters that include particular values, but that these parameters need not be exactly equal to the corresponding values, but may be approximated to the corresponding values within acceptable error tolerances or design constraints. Directional phrases used in the embodiments, such as those referring to "upper", "lower", "front", "rear", "left", "right", etc., refer only to the orientation of the attached drawings and are not intended to limit the scope of the present application.

While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention, which is to be limited only by the claims appended hereto.

Claims

1. A medical injection mold ejection mechanism comprises a lower mold (1), an upper mold (2), a male mold (3) connected to the lower mold (1), and a female mold (4) arranged at the bottom of the upper mold (2) and matched with the male mold (3), and is characterized in that an ejector pin mechanism for ejecting a product is connected in the lower mold (1), two pressure rods (12) for pressing the ejector pin mechanism are connected at the bottom of the upper mold (2), and telescopic rods (17) capable of pulling the ejector pin mechanism are respectively connected to the left side wall and the right side wall of the upper mold (2);

the thimble mechanism includes: swing joint is in push pedal (8) in lower mould (1), connect on push pedal (8) and swing joint be in a plurality of thimble (9) in terrace die (3), and set up push pedal (8) with a plurality of spring (11) between lower mould (1).

2. The medical injection mold ejection mechanism according to claim 1, wherein a movable cavity (7) is formed in the lower mold (1), a plurality of counter bores (301) are formed downward on the male mold (3), the push plate (8) is movably connected in the movable cavity (7), the ejector pin (9) penetrates through the lower mold (1) and is movably connected in the counter bores (301), the top of the ejector pin (9) is connected with an ejector piece (10), and the ejector piece (10) is fitted with the counter bores (301).

3. The medical injection mold ejection mechanism according to claim 2, wherein the left side and the right side of the top of the lower mold (1) are symmetrically provided with a movable hole (13), the movable hole (13) is communicated with the movable cavity (7), and the pressure lever (12) is right above the movable hole (13).

4. The medical injection mold ejection mechanism according to claim 2, wherein a sliding groove (14) is formed in each of the left and right side walls of the lower mold (1), and the sliding groove (14) is communicated with the movable cavity (7).

5. The medical injection mold ejection mechanism according to claim 4, wherein a first fixing plate (15) is connected to each of left and right side walls of the push plate (8), the other end of the first fixing plate (15) passes through the sliding groove (14) and protrudes outside the lower mold (1), a second fixing plate (16) is connected to each of left and right side walls of the upper mold (2), and the telescopic rod (17) is connected between the first fixing plate (15) and the second fixing plate (16).

6. The medical injection mold ejection mechanism according to claim 1, wherein a limiting rod (5) is connected to each of four corners of the lower mold (1), and an end of the limiting rod (5) passes through the upper mold (2) and is in threaded connection with a nut (6).

7. The medical injection mold ejection mechanism according to claim 1, wherein the female mold (4) is embedded in the bottom of the upper mold (2), and the bottom of the female mold (4) is flush with the bottom of the upper mold (2).

8. The medical injection mold ejection mechanism according to claim 1, wherein an injection port (18) is provided in the middle of the upper mold (2), and the injection port (18) is communicated with the female mold (4).