CN116572472A

CN116572472A - Injection molding die for plastic valve handle

Info

Publication number: CN116572472A
Application number: CN202310628474.XA
Authority: CN
Inventors: 陈林开; 黄宝乐
Original assignee: Hejian Xinhuacai Injection Molding Factory
Current assignee: Hejian Xinhuacai Injection Molding Factory
Priority date: 2023-05-31
Filing date: 2023-05-31
Publication date: 2023-08-11

Abstract

The application belongs to the technical field of valve handle manufacturing, and particularly relates to an injection molding die for a plastic valve handle, which comprises a fixed die and a sliding die, wherein the sliding die is arranged on the end face of one side of the fixed die in a sliding fit manner, a female die is arranged on the end face of the fixed die, which is close to the sliding die, a plurality of molding cavities are arranged on the end face of the female die, a male die is arranged on the end face of the male die, one side of the male die is provided with a material injection pipe orifice in communication with the end face of the sliding die, one side of the material injection pipe orifice is provided with a first flow inner pipe in communication with the male die, a plurality of second flow inner pipes are arranged on two sides of the first flow inner pipe in the male die, and a plurality of injection ports in communication with the second flow inner pipes are arranged on the end faces of the male die. The application can perform corresponding vibration treatment on the handle end and the rotating and twisting end and perform cooling treatment on the finished product when the plastic valve handle is demolded.

Description

Injection molding die for plastic valve handle

Technical Field

The application belongs to the technical field of valve handle manufacturing, and particularly relates to an injection molding die for a plastic valve handle.

Background

The valve handle is usually made by plastic injection molding, and the valve handle mainly comprises a handle and a rotating twisting block sleeved at the hexagonal end of a valve rotating shaft, wherein the rotating twisting block and the handle have larger width and thickness difference, and when the demolding pushing rod of the traditional mold is ejected out after the injection molding of the mold is finished, if no corresponding loosening measure in the earlier stage is directly ejected out, the joint between the rotating twisting block and the handle is damaged or broken easily, so that the equipment yield is greatly reduced, and the resource waste is caused. Therefore, the design of the die which can effectively finish injection molding of the valve handle and ensure that damage cannot occur when the valve handle is demolded is of great significance.

Disclosure of Invention

The application aims to solve the problems in the prior art and provides an injection molding die for a plastic valve handle. The application can perform corresponding vibration treatment on the handle end and the rotating and twisting end when the plastic valve handle is demolded, and perform cooling treatment on a finished product, so that the handle and the rotating and twisting block are not damaged when the product is demolded.

In order to achieve the above purpose, the present application adopts the following technical scheme: the utility model provides a plastics valve handle injection moulding mould, includes fixed mould, sliding fit is provided with sliding mould on the terminal surface of fixed mould one side, be provided with the die on the terminal surface that fixed mould is close to sliding mould, evenly be provided with a plurality of forming die cavities along the straight line direction on the die terminal surface, be provided with the handle forming die cavity that the handle formed in the forming die cavity, handle forming die cavity one side is provided with the rotation of handle screwing end shaping usefulness in the forming die intracavity, rotation screwing piece forming die centre of a circle department is provided with the hexagon lug, die one side is provided with on the terminal surface that sliding mould is close to fixed mould with die complex terrace die, evenly be provided with a plurality of pressfitting templates similar with the forming die shape along the straight line direction on the terrace die terminal surface, pressfitting template one side is provided with the notes material mouth of pipe in the terrace die middle part intercommunication, first interior pipe both sides are provided with a plurality of second interior pipes along straight line direction evenly intercommunication in the terrace die, every second interior pipe is led to the second interior pipe to the pressfitting and is provided with a plurality of second and is led to the intercommunication on the terrace die terminal surface.

Preferably, sliding hole positions are arranged at four corners of the end face, close to the sliding die, of the fixing die, sliding rods in one-to-one correspondence with the sliding hole positions are arranged at four corners of the end face, close to the sliding die, of one side of the sliding hole positions, and the sliding rods are in sliding fit in the sliding hole positions. The slide bar can ensure that the female die at one end of the fixed die and the male die at one end of the sliding die can be smoothly embedded.

Preferably, a liquid storage cavity for storing refrigerating fluid is formed in the two ends of the female die on one side of the fixed die, a liquid injection port is formed in the outer end face of the liquid storage cavity in a communicated mode, a plurality of heat absorbing plates are uniformly arranged on the inner walls of the two sides of the liquid storage cavity on one side of the liquid injection port along the linear direction, a plurality of cooling rods are uniformly arranged on the end faces of the heat absorbing plates along the linear direction, an adsorption pipe for adsorbing impurities is rotationally arranged on the outer circular face of the cooling rods, and a plurality of adsorption cotton sticks with different lengths and floating in the refrigerating fluid are uniformly arranged on the outer circular face of the adsorption pipe along the circumferential direction. The heat-absorbing plate and the cooling rod can cool the refrigerating fluid when the refrigerating fluid absorbs and overheats the heat of the die, and the adsorption tube and the adsorption cotton stick can adsorb impurities generated in the cooling process of the refrigerating fluid, so that the phenomenon that the impurities are accumulated in a refrigerating pipeline to cause blockage is avoided, and the adsorption cotton sticks with different lengths can float in various positions in the liquid storage cavity at will, so that dead angles are avoided.

Preferably, a plurality of refrigerating pipelines are uniformly communicated in the fixing die in the straight line direction between the two liquid storage cavities, each refrigerating pipeline is located in a local area between the upper molding cavity and the lower molding cavity, a backflow cavity is arranged in the fixing die on one side of the refrigerating pipeline, two backflow pipes are communicated in the upper portion and the lower portion of one end of the backflow cavity, which is close to one end of the refrigerating pipeline, the two backflow pipes are communicated on the end face of the refrigerating pipeline, and a rotating fan wheel is rotationally arranged in the backflow cavity. The contact area between the reflux cavity and the molding cavity can be increased, and the rotating fan wheel can improve the liquid flow rate in the process of refrigerating fluid circulation, so that the refrigerating effect is improved.

Preferably, each forming cavity side is provided with a demoulding air cavity in the fixed die, the end face, close to the handle forming cavity, of the demoulding air cavity is provided with a plurality of vibrating inner pipes in a communicating mode, the circle center of each vibrating inner pipe is provided with a second demoulding pipe of the end face of the handle forming cavity in a communicating mode, the second demoulding pipe is internally provided with a second piston top block in a sliding mode, the bottom end face of the second piston top block is attached to the outer end face of the handle forming cavity, and a pushing base is arranged above the second piston top block and in the demoulding air cavity. And when the second piston ejector block is pushed outwards, the finished product in the forming cavity can be ejected outwards.

Preferably, the pushing base is internally provided with a pushing slide plate in a sliding manner, the pushing slide plate is connected and provided with a plurality of pushing slide bars on the end face, close to the rotating screwing block forming cavity, of the pushing slide bar, the other end of the pushing slide bar extends out of the end face of the pushing base, one end, close to the vibrating inner tube, of the pushing slide bar is connected and provided with a linkage plate, one end, close to the vibrating inner tube, of the linkage plate is connected and provided with a plurality of pushing rods, one end, far away from the pushing base, of the pushing rod extends into the vibrating inner tube, one end, close to the vibrating inner tube, of the pushing rod is connected and arranged on the top end face of the second piston pushing block, the pushing slide plate is connected and provided with a first spring on the end face, far away from the pushing slide bar, of the first spring is connected and arranged on the inner wall at the bottom of the pushing base, and the end face of the pushing base is communicated and provided with a first vent pipe. The second demolding ejector blocks in the second demolding pipes can be simultaneously ejected outwards due to the arrangement of the linkage plates, so that uneven stress of finished products in the process of outward ejection is avoided.

Preferably, the two sides of the pushing base are communicated with two second ventilation pipes on the end face of the bottom of the demolding air cavity, a plurality of ventilation holes are formed in one side of the second ventilation pipes on the end face of the linkage plate, a connecting circular plate is arranged on the outer circular face of the vibrating inner pipe, which stretches into the ejector rod, a plurality of ejector tubes are uniformly arranged on the end face of the connecting circular plate along the circumferential direction, each ejector tube is internally provided with a spring sliding rod in a sliding mode, one end of the spring sliding rod, which is close to one end of the second demolding pipe, stretches out of the end face of the ejector tube, one end of the spring sliding rod, which stretches out of the end face of the ejector tube, is connected with a fourth spring, the other end of the fourth spring is connected with a vibrating sleeve, the outer end face of which is arc-shaped and is abutted to be close to the end face of the second demolding pipe, the vibrating sleeve is arranged on the outer circular face of the ejector rod in a sliding mode, a second vibrator is arranged in the ejector rod in a sliding mode, one side of the second vibrator is arranged on one end of the ejector sliding rod in the ejector tube in a connecting mode, the other end face of the third spring sliding rod is arranged on the ejector tube, the other end face of the third spring is connected with a fourth spring, and the ends of the ejector tube are connected with one end face of the ejector tube, which is connected with one end face of the ejector tube. The setting of fourth spring both can be when the second piston kicking block has not outwards pushed out alright shake processing to finished product and handle shaping chamber, can also inwards retract when the second piston kicking block outwards pushes out for the second vibrator is nearer with the handle shaping chamber distance, has effectually improved vibration frequency.

Preferably, the demolding air cavity is close to the end face of the rotating screwing block forming cavity, a first demolding pipe is communicated with two sides of the bump of the rotating screwing block forming cavity, a first piston top block with a cavity in the center is arranged in the first demolding pipe in a sliding mode, the outer circle of one end of the first piston top block close to the pushing base is conical, one end of the conical surface of the first piston top block is communicated with a reverse conical air cavity with a hollow middle part, the outer circle of the reverse conical air cavity close to the first piston top block is conical, a plurality of air injection holes are uniformly communicated on the inclined face of the reverse conical air cavity close to the first piston top block along the circumferential direction, a hollow ejector rod is communicated with the end face of the reverse conical air cavity far away from the first piston top block, and the other end of the hollow ejector rod is communicated with the end face of the linkage plate. The back taper air cavity and the outer circular surface of the connecting end of the first piston top block are arranged in a conical mode, gas sprayed out of the gas spraying holes can flow onto the inner wall of the forming cavity of the rotating screwing block more quickly, friction coefficients between a finished product and the forming cavity of the rotating screwing block are reduced, and therefore demoulding effect is improved.

Preferably, the hollow ejector rod is provided with a first vibrator on the inner and outer circular surfaces of the demolding air cavity, one end, close to the first demolding pipe, of the first vibrator is connected with a plurality of second springs, one end, far away from the pushing base, of the second springs is connected with a vibration contact plate, one end, far away from the first vibrator, of the vibration contact plate is abutted to the top of the first demolding pipe, one side of the vibration contact plate is provided with a heat absorption block in a first piston ejector block, and one side of the first vibrator is provided with a refrigerator on the inner walls of two sides of the demolding air cavity. The heat absorption block can absorb certain heat when the mould is subjected to injection molding, and can be neutralized with the heat of the heat absorption block when cold air is sprayed outwards, so that the gas sprayed just is in a warm state, and the condition that a finished product is cracked due to sudden cold air is avoided.

The beneficial effects are that:

1. according to the application, through the design of the sliding spring rod, the second vibrator, the vibration sleeve, the air injection pipe orifice and other parts, the finished handle end can be vibrated in advance in the demolding process so as to be loosely matched with the air injection arrangement in the demolding process, so that the demolding effect is effectively improved, and meanwhile, the damage of products is avoided.

2. According to the application, through the design of the first vibrator, the air injection hole, the first piston top block, the heat absorption block and other parts, the temperature of the sprayed gas can be gradually reduced after the rotating screwing block end of the finished product is subjected to vibration treatment during demolding, so that the condition that the product is cracked by cold air is avoided while the product is smooth is ensured.

3. According to the application, through the design of parts such as the liquid storage cavity, the adsorption cotton stick, the reflux cavity, the rotating fan wheel and the like, the area of the cooling area and the flow velocity of the refrigerating fluid are increased, and impurities generated in the refrigerating process of the refrigerating fluid can be adsorbed, so that the blockage of a pipeline is effectively avoided, and the service time of the die is prolonged.

Drawings

FIG. 1 is a perspective view of the present application;

FIG. 2 is a front view of the present application;

FIG. 3 is a front view of a sliding mold part;

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

FIG. 5 is a cross-sectional view at B-B in FIG. 3;

FIG. 6 is a perspective view of a stationary mold part;

FIG. 7 is a front view of a stationary mold part;

FIG. 8 is a cross-sectional view taken at C-C of FIG. 7;

FIG. 9 is a cross-sectional view taken at D-D of FIG. 7;

FIG. 10 is a cross-sectional view taken at E-E of FIG. 9;

FIG. 11 is an enlarged view of a portion of F in FIG. 8;

FIG. 12 is an enlarged view of a portion of the portion G of FIG. 8;

FIG. 13 is an enlarged view of a portion of H in FIG. 8;

FIG. 14 is an enlarged view of a portion of J of FIG. 9;

in the figure: the fixed die 10, the sliding die 11, the female die 21, the molding cavity 22, the rotary screw block molding cavity 24, the handle molding cavity 23, the male die 15, the press-fit die plate 16, the injection port 13, the first inflow inner tube 19, the second inflow inner tube 20, the injection port 18, the sliding hole site 12, the slide rod 17, the liquid storage cavity 25, the injection port 14, the heat absorbing plate 26, the cooling rod 27, the suction tube 60, the suction cotton stick 61, the refrigeration tube 38, the return cavity 59, the return tube 39, the rotary fan wheel 62, the demolding cavity 30, the vibrating inner tube 52, the second demolding tube 53, the second piston top block 54, the push base 31, the push slide plate 37, the push slide rod 34, the linking plate 35, the ejector rod 49, the first spring 32, the first air tube 28, the second air tube 29, the vent tube 36, the connection disc 63, the ejector tube 50, the ejector slide rod 55, the fourth spring 58, the vibrating sleeve 57, the second vibrator 56, the third spring 51, the air ejector tube 64, the first piston top block 45, the inverted cone cavity 46, the hole 47, the hollow core 44, the first vibrator 41, the second vibrator top plate 43, the vibration plate 33, the vibration absorber 33, the contact the heat absorbing plate 48, the ejector rod 45, and the ejector rod

Detailed Description

The following are specific embodiments of the present application and the technical solutions of the present application will be further described with reference to the accompanying drawings, but the present application is not limited to these embodiments.

In the description of the present application, it should be noted that, the azimuth or positional relationship indicated by the terms "inner", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship that the inventive product is conventionally put in use, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

Embodiment one:

as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, a plastic valve handle injection molding mold comprises a fixed mold 10 and a sliding mold 11, wherein the sliding mold 11 is arranged on the end surface of one side of the fixed mold 10 in a sliding fit manner, a female mold 21 is arranged on the end surface of the fixed mold 10, which is close to the sliding mold 11, a plurality of molding cavities 22 are uniformly arranged on the end surface of the female mold 21 along the straight line direction, a handle molding cavity 23 for handle molding is arranged in the molding cavity 22, a rotating screwing block molding cavity 24 for handle screwing end molding is internally arranged in the molding cavity 22 on one side of the handle molding cavity 23, a hexagonal protruding block is arranged at the center of the rotating screwing block molding cavity 24, a male mold 15 matched with the female mold 21 is arranged on one side of the end surface of the sliding mold 11, a plurality of press fit templates 16 which are similar in shape to the molding cavity 22 are uniformly arranged on the end surface of the male mold 15 along the straight line direction, a plurality of injection ports 13 are uniformly arranged on one side of the press fit templates 16, two sides of the inner pipes 19 are uniformly communicated with each other in the inner pipe 15, a plurality of second flow through pipes 20 are uniformly communicated with each other in the straight line direction, and are correspondingly arranged on the second flow through inner pipe 16, and are uniformly communicated with the second flow through inner pipe 16, and are respectively communicated with the second flow through holes 20.

Further, as shown in fig. 4 and 6, sliding hole sites 12 are provided at four corners of the end surface of the fixed mold 10 close to the sliding mold 11, sliding rods 17 corresponding to the sliding hole sites 12 one by one are provided at four corners of the end surface of the sliding mold 11 close to the sliding hole sites 12, and the sliding rods 17 are slidably fitted in the sliding hole sites 12.

Further, as shown in fig. 6, 8, 10 and 13, a liquid storage cavity 25 for storing a refrigerant liquid is provided at two ends of the fixing mold 10 on one side of the female mold 21, a liquid injection port 14 is provided on an outer end surface of the liquid storage cavity 25 in a communicating manner, a plurality of heat absorbing plates 26 are uniformly provided on inner walls of two sides of the liquid storage cavity 25 on one side of the liquid injection port 14 in a linear direction, a plurality of cooling rods 27 are uniformly provided on an end surface of each heat absorbing plate 26 in a linear direction, an adsorption tube 60 for adsorbing impurities is rotatably provided on an outer circumferential surface of the cooling rods 27, and a plurality of adsorption cotton sticks 61 with different lengths and floating in the refrigerant liquid are uniformly provided on an outer circumferential surface of the adsorption tube 60 in a circumferential direction.

Further, as shown in fig. 9, 10 and 14, a plurality of refrigeration pipelines 38 are uniformly communicated in the fixed die 10 in a straight line direction between the two liquid storage cavities 25, each refrigeration pipeline 38 is located between the upper molding cavity 22 and the lower molding cavity 22, a backflow cavity 59 is arranged in the fixed die 10 on one side of the refrigeration pipeline 38, two backflow pipes 39 are communicated in the upper portion and the lower portion of one end of the backflow cavity 59, which is close to the refrigeration pipeline 38, of the backflow cavity 59, the other ends of the two backflow pipes 39 are communicated and arranged on the end face of the refrigeration pipeline 38, and a rotating fan wheel 62 is rotationally arranged in the backflow cavity 59.

Further, as shown in fig. 8 and 12, a demolding air cavity 30 is disposed on one side of each molding cavity 22 in the fixed mold 10, a plurality of vibrating inner pipes 52 are disposed on the end surface of the demolding air cavity 30 close to the handle molding cavity 23 in a communicating manner, a second demolding pipe 53 disposed on the center of the vibrating inner pipes 52 in a communicating manner is disposed on the end surface of the handle molding cavity 23, a second piston top block 54 with the bottom end surface attached to the outer end surface of the handle molding cavity 23 is disposed in the second demolding pipe 53 in a sliding manner, and a pushing base 31 is disposed above the second piston top block 54 and in the demolding air cavity 30.

Further, as shown in fig. 8 and 12, a pushing slide plate 37 is slidably disposed in the pushing base 31, a plurality of pushing slide rods 34 are connected to an end surface of the pushing slide plate 37, which is close to the rotating screwing block forming cavity 24, an end surface of the pushing base 31 extends out of the other end of the pushing slide rod 34, a linkage plate 35 is connected to one end of the end surface of the pushing base 31, which is close to the vibrating inner tube 52, a plurality of pushing rods 49 are connected to one end of the linkage plate 35, which is close to the vibrating inner tube 52, one end of the pushing rods 49, which is far from the pushing base 31, extends into the vibrating inner tube 52, is connected to the top end surface of the second piston pushing block 54, a first spring 32 is connected to an end surface of the pushing slide plate 37, which is far from the pushing slide rod 34, a second end surface of the pushing slide rod 32 is connected to the inner wall at the bottom of the pushing base 31, and a first ventilation tube 28 is connected to the end surface at the bottom of the pushing base 31.

When the mould needs to be moulded plastics, fixed mould 10 is fixed to be set up on the injection molding machine fixing base, with slip mould 11 setting on the injection molding machine movable table face, slip mould 11 slides on the slip hole site 12 of fixed mould 10 terminal surface through a plurality of slide bars 17 to guarantee that terrace die 15 can be stable inlay in die 21, before the beginning of moulding plastics, slip mould 11 is under the action of injection molding machine movable table with terrace die 15 gomphosis in die 21, thereby make a plurality of pressfitting template 16 of terrace die 15 one end can gomphosis on shaping chamber 22 terminal surface, make fixed mould 10 terminal surface and slip mould 11 terminal surface can laminate together.

The injection molding machine inserts the material injection end into the material injection pipe 13, after the material injection end is inserted into the material injection pipe 13, the plastic solution can be injected into the first flow inner pipe 19 communicated with the material injection pipe, the solution injected into the first flow inner pipe 19 can enter the injection molding openings 18 at one end of each pressing mold plate 16 through the second flow inner pipe 20, then is sprayed into the molding cavity 22 through the injection molding openings 18, and the solution sprayed into the molding cavity 22 can fill the handle molding cavity 23 and the rotary screwing block molding cavity 24, so that both the handle and the screwing nut part of the handle can be molded.

After the plastic liquid is fully filled in the handle forming cavity 23 and the rotating screwing block forming cavity 24, at this moment, one of the liquid injection ports 14 in the liquid injection ports 14 on two sides can be started, the cooling liquid can be injected into the liquid storage cavity 25, the cooling liquid injected into the liquid storage cavity 25 can drive the adsorption tube 60 and the adsorption cotton rod 61 which are rotatably arranged on the inner wall of the liquid storage cavity 25 and one side of the heat absorption plate 26 to rotate, impurities in the cooling liquid can be adsorbed by the adsorption tube 60 and the adsorption cotton rod 61 in the rotating process, so that the impurities are prevented from depositing in the refrigerating pipeline 38 and the reflux cavity 59, the adsorbed cooling liquid can be injected into the refrigerating pipeline 38 of each communication, the cooling liquid flowing into the refrigerating pipeline 38 can cool the forming cavities 22 on the upper side and the lower side of each communication, thereby the forming die can be better hardened, the liquid injected into the reflux pipe 39 of one end communication can be also entered into the reflux cavity 59, the rotating fan 62 arranged in the reflux cavity 59 can be driven to rotate, the rotating fan 62 can quickly flow back to the reflux cavity 39, and the single liquid can be quickly cooled through the reflux cavity 59.

After the cooling liquid flowing into the refrigerating pipeline 38 and the reflux cavity 59 absorbs heat of the molding cavity 22 and the fixed die 10, the cooling liquid still absorbs the flowing-in liquid impurities in the adsorption tube 60 and the adsorption cotton stick 61 in the liquid storage cavity 25 at the other side after flowing into the liquid storage cavity 25 at the other side, and meanwhile, the heat absorbing plate 26 and the cooling rod 27 absorb the heat in the liquid, so that the liquid can be cooled and recycled, and the die can be cooled again during subsequent use.

After the fixed mold 10 and the molding cavity 22 are cooled, the sliding mold 11 moves to one side, then the first ventilation pipe 28 starts to supply air, the air enters the pushing base 31 through the first ventilation pipe 28, so that the pushing slide plate 37 arranged in the pushing base 31 is pushed to move outwards, the pushing slide rods 34 arranged at one end of the pushing slide plate 37 are pushed to move outwards, the linkage plate 35 arranged at one end of the pushing slide rod 34 and the pushing rod 49 arranged at one end of the linkage plate 35 are pushed to move outwards, so that the second piston top block 54 arranged at one end of the pushing rod 49 is pushed to move outwards against the molded handle until the handle is pushed to the outer end face of the molding cavity 22 to drop, then the handle is retracted inwards, the unloading work of the molded handle is completed, and after the molded handle is pushed out, the mold can perform a new round of injection molding work.

Embodiment two:

on the basis of the first embodiment, as shown in fig. 8, 9, 12 and 14, two second ventilation pipes 29 are provided on two sides of the pushing base 31 on the bottom end face of the demolding air cavity 30 in a communicating manner, a plurality of ventilation holes 36 are provided on one side of the second ventilation pipes 29 on the end face of the linkage plate 35, a connecting circular plate 63 is provided on the outer circumferential face of the linkage plate 35 extending into the vibrating inner pipe 52 on the side of the pushing rod 49, a plurality of elastic pipes 50 are uniformly provided on the end face of the connecting circular plate 63 along the circumferential direction, an elastic sliding rod 55 is slidably provided in each elastic pipe 50, one end of the elastic sliding rod 55 near the second demolding pipe 53 extends out of the end face of the elastic pipe 50, one end of the elastic sliding rod 55 extending out of the end face of the elastic pipe 50 is connected with a fourth spring 58, the other end of the fourth spring 58 is connected with a vibrating sleeve 57 having an outer end face in an arc shape and abutting against the end face near the second demolding pipe 53, the vibrating sleeve 57 is slidably provided on the outer circumferential face of the elastic sliding rod 55, a second vibrator 56 is provided in the elastic sliding rod 55, one side of the second vibrator 56 is provided on the elastic sliding rod 55, one end 55 is provided on the side of the elastic sliding rod 55 is connected with a third spring 64 provided on the other end face near the elastic sliding rod 50, and is connected with the end face of the elastic pipe 50.

Before the demoulding of the forming die, the second vibrator 56 is started, the second vibrator 56 starts vibrating, so that the fourth spring 58 at one end of the spring sliding rod 55 outside the second vibrator 56 starts vibrating, the vibrating sleeve 57 at one end of the fourth spring 58 is attached to the bottom end face of the vibrating inner tube 52 to vibrate, the attaching degree between the formed handle and the forming cavity 22 is reduced, the situation that the second piston ejector block 54 is quickly pushed to cause damage during demoulding can be avoided while demoulding is facilitated, when the demoulding ejector rod 49 starts pushing, the ejector rod 49 also can drive the connecting circular plate 63 and the spring sliding rod 50 to move towards the direction of the second demoulding tube 53, the spring sliding rod 55 in the spring sliding rod 50 can be closer to the second demoulding tube 53, at the moment, one end of the vibrating sleeve 57 is attached to the inner bottom of the vibrating inner tube 52 due to the fact that the fourth spring 58 is stressed, the vibrating sleeve 57 is retracted into the spring sliding rod 55, the distance between the vibrating sleeve 57 and the second vibrator 56 is reduced, the frequency of a finished product is increased, and the attaching degree between the vibrating sleeve 57 and the inner wall 22 and the forming cavity is reduced.

In the pushing process of the ejector rod 49, the demolding air cavity 30 can be filled with air into the demolding air cavity 30 through the second ventilation pipe 29, the air filled into the demolding air cavity 30 can be filled into one side of the vibrating inner pipe 52 through the plurality of ventilation holes 36 on the end face of the linkage plate 35, when the second piston top block 54 is pushed out a certain distance, the plurality of air injection nozzles 64 on the end face of the connecting circular plate 63 can be opened, so that the air is filled into the vibrating inner pipe 52, and then sprayed to the outside of a product through the gaps of the second piston top block 54 and the second demolding pipe 53, so that the cooling treatment is carried out on the product, and meanwhile, the air can flow into the area between the product and the inner wall of the molding cavity 22, so that the demolding effect is improved.

Embodiment III:

on the basis of the first or second embodiment, as shown in fig. 8 and 11, a first demolding pipe 40 is arranged on the end face of the demolding air cavity 30, which is close to the rotary screwing block forming cavity 24, on two sides of a bump of the rotary screwing block forming cavity 24 in a communicating manner, a first piston top block 45 with a cavity in the center is arranged in the first demolding pipe 40 in a sliding manner, an outer circle surface of one end of the first piston top block 45, which is close to the pushing base 31, is conical, one end of a conical surface of the first piston top block 45 is communicated with an inverted cone air cavity 46 with a hollow middle part, an outer circle surface of the inverted cone air cavity 46, which is close to the first piston top block 45, is conical, a plurality of air injection holes 47 are uniformly communicated in the circumferential direction on an inclined surface of the inverted cone air cavity 46, which is close to the first piston top block 45, a hollow ejector rod 44 is arranged on one side of the inverted cone air injection holes 46, which is far from the end face of the first piston top block 45, is communicated with one end of the hollow ejector rod 44, which is arranged on the end face of the linkage plate 35.

Further, as shown in fig. 8 and 11, the hollow ejector rod 44 is provided with a first vibrator 41 on the inner and outer circular surfaces of the demolding air cavity 30, one end of the first vibrator 41, which is close to the first demolding pipe 40, is connected with a plurality of second springs 42, one end, which is far away from the pushing base 31, of the second springs 42 is connected with a vibration contact plate 43, one end, which is far away from the first vibrator 41, of the vibration contact plate 43 is abutted to the top of the first demolding pipe 40, one side of the vibration contact plate 43 is provided with a heat absorption block 48 in the first piston ejector block 45, and one side of the first vibrator 41 is provided with a refrigerator 33 on the inner walls of two sides of the demolding air cavity 30.

In the process that the second piston top block 54 pushes the handle in the handle forming cavity 23 area in the forming cavity 22 to perform outward demolding, the first vibrator 41 can be started before demolding, so that the outer end surface of the first piston top block 45 can move outwards against the demolding end of a product in the demolding cavity 30 through the second spring 42 and the vibration contact plate 43, if the hollow ejector rod 44 pushes the rotating screwing forming cavity 24 in this relation, the space between the first vibrator 41 and the vibration contact plate 43 can be reduced due to the compression of the second spring 42, so that the vibration force is improved, when the second piston top block 54 begins to push, the hollow ejector rod 44 can also be pushed outwards under the action of the linkage plate 35, so that the outer end surface of the first piston top block 45 can move outwards against the demolding end of the product, and in the pushing process, the hollow ejector rod 44 can be opened, so that the refrigerator 33 arranged on the inner wall of the demolding cavity 30 can be demolded, and the temperature of the hollow ejector rod 44 can be reduced, and after the air is cooled down in the hollow ejector rod 44, the air can enter the air cavity 48 through the hollow ejector rod 44 and the air cavity 48, and the air can be cooled down in the air cavity 48, and the air can flow into the air cavity 48 and the air cavity 48 can be cooled down by the air cavity 48 after the air is contacted with the hollow ejector rod 44, and the air is cooled down by the air in the air cavity 48, and the air is cooled down by the air is in the air cavity 48, and the air cavity 45, and the air is cooled down by the air is in the air cavity and the air cavity 45.

When the first piston top block 45 is pushed out a certain distance, the air hole 47 will spray the air in the back taper air cavity 46 outwards, so that the adhesion degree between the product and the inner wall of the rotary screwing block forming cavity 24 is reduced, and the demolding is convenient.

The foregoing is merely an embodiment of the present application, and a specific structure and characteristics of common knowledge in the art, which are well known in the scheme, are not described herein, so that a person of ordinary skill in the art knows all the prior art in the application date or before the priority date, can know all the prior art in the field, and has the capability of applying the conventional experimental means before the date, and a person of ordinary skill in the art can complete and implement the present embodiment in combination with his own capability in the light of the present application, and some typical known structures or known methods should not be an obstacle for a person of ordinary skill in the art to implement the present application. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the structure of the present application, and these should also be considered as the scope of the present application, which does not affect the effect of the implementation of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The injection molding die for the plastic valve handle comprises a fixed die (10) and a sliding die (11), and is characterized in that the sliding die (11) is arranged on one side end surface of the fixed die (10) in a sliding fit manner, a female die (21) is arranged on the end surface of the fixed die (10) close to the sliding die (11), a plurality of molding cavities (22) are uniformly arranged on the end surface of the female die (21) along the straight line direction, a handle molding cavity (23) for molding the handle is arranged in the molding cavity (22), a rotating screwing block molding cavity (24) for molding a handle screwing end part is arranged on one side of the handle molding cavity (23) in the molding cavity (22), the center of the rotary screwing block forming cavity (24) is provided with a hexagonal protruding block, one side of the female die (21) is provided with a male die (15) matched with the female die (21) on the end face of the sliding die (11) close to the fixed die (10), a plurality of pressing-fit templates (16) similar to the forming cavity (22) in shape are uniformly arranged on the end face of the male die (15) along the straight line direction, one side of the pressing-fit templates (16) is provided with a material injection pipe orifice (13) in communication with the center of the end face of the sliding die (11), one side of the material injection pipe orifice (13) is provided with a first circulation inner pipe (19) in communication with the middle part in the male die (15), a plurality of second flow inner pipes (20) are uniformly communicated in the male die (15) along the straight line direction at two sides of the first flow inner pipe (19), each second flow inner pipe (20) corresponds to the pressing type plate (16), and a plurality of injection molding openings (18) communicated with the second flow inner pipes (20) are formed in the end face of the pressing type plate (16).

2. The injection molding die for the plastic valve handle according to claim 1, wherein sliding hole sites (12) are arranged at four corners of the end surface of the fixed die (10) close to the sliding die (11), sliding rods (17) in one-to-one correspondence with the sliding hole sites (12) are arranged at four corners of the end surface of the sliding die (11) close to one side of the sliding hole sites (12), and the sliding rods (17) are in sliding fit with the sliding hole sites (12).

3. The plastic valve handle injection molding die according to claim 1, wherein a liquid storage cavity (25) for storing refrigerating liquid is arranged at two ends in the fixed die (10) at one side of the female die (21), liquid injection ports (14) are communicated and arranged on the outer side end surfaces of the liquid storage cavity (25), a plurality of heat absorption plates (26) are uniformly arranged on one side of the liquid injection ports (14) on the inner walls of two sides of the liquid storage cavity (25) along the straight line direction, a plurality of cooling rods (27) are uniformly arranged on the end surfaces of each heat absorption plate (26) along the straight line direction, an adsorption pipe (60) for adsorbing impurities is rotationally arranged on the outer circular surface of the cooling rod (27), and a plurality of adsorption cotton rods (61) which are different in length and float in the refrigerating liquid are uniformly arranged on the outer circular surface of the adsorption pipe (60).

4. A plastic valve handle injection molding die according to claim 3, wherein a plurality of refrigerating pipelines (38) are uniformly communicated in a straight line direction in the fixed die (10) between two liquid storage cavities (25), each refrigerating pipeline (38) is located in a local area between the upper molding cavity (22) and the lower molding cavity (22), a reflux cavity (59) is arranged in the fixed die (10) at one side of the refrigerating pipeline (38) close to the molding cavity (22), two reflux pipes (39) are communicated at the upper part and the lower part of one end of the reflux cavity (59) close to the refrigerating pipeline (38), the other ends of the reflux pipes (39) are communicated and arranged on the end faces of the refrigerating pipeline (38), and a rotating fan wheel (62) is rotationally arranged in the reflux cavity (59).

5. The plastic valve handle injection molding die according to claim 1, wherein a demolding air cavity (30) is arranged on one side of each molding cavity (22) in the fixed die (10), a plurality of vibrating inner pipes (52) are communicated and arranged on the end face, close to the handle molding cavity (23), of each demolding air cavity (30), a second demolding pipe (53) is communicated and arranged on the center of each vibrating inner pipe (52), of the end face of each handle molding cavity (23), a second piston top block (54) with the bottom end face attached to the outer end face of the handle molding cavity (23) is arranged in the second demolding pipe (53), and a pushing base (31) is arranged above the second piston top block (54) and in the demolding air cavity (30).

6. The plastic valve handle injection molding mold according to claim 5, wherein a pushing slide plate (37) is slidably arranged in the pushing base (31), a plurality of pushing slide rods (34) are connected and arranged on the end face, close to the rotating screwing block molding cavity (24), of the pushing slide plate (37), the other end of the pushing slide rod (34) extends out of the end face of the pushing base (31), one end, close to the vibrating inner tube (52), of the pushing slide rod (34) is connected and arranged with a linkage plate (35), one end, close to the vibrating inner tube (52), of the linkage plate (35) is connected and arranged with a plurality of pushing rods (49), one end, far away from the pushing base (31), of the pushing rods (49) extends into the vibrating inner tube (52), one end, close to the vibrating inner tube (52), of the pushing rods (49) extends into the top end face of the second piston pushing block (54), a first spring (32) is connected and arranged on the end face, far from the pushing slide rod (34), of the pushing slide plate (37), a second spring (32) is connected and arranged on the end face, close to the pushing base (31), and a vent pipe (28) is arranged on the bottom inner wall of the pushing base (31).

7. The injection molding die for the plastic valve handle according to claim 6, wherein two second vent pipes (29) are communicated with each other on the bottom end face of the demolding air cavity (30) at two sides of the pushing base (31), a plurality of vent holes (36) are formed in the end face of the linkage plate (35) at one side of the second vent pipes (29), a connecting circular plate (63) is arranged on the outer circular face of the vibrating inner tube (52) extending into the ejector rod (49) at one side of the linkage plate (35), a plurality of elastic tubes (50) are uniformly arranged on the end face of the connecting circular plate (63) along the circumferential direction, elastic sliding rods (55) are slidably arranged in each elastic tube (50), one end of each elastic sliding rod (55) extends out of the end face of the elastic tube (50) close to one end face of the second demolding tube (53), a fourth spring (58) is arranged at one end of the end face of the elastic sliding rod (55), the other end face of the fourth spring (58) is connected with a sleeve (57) which is circular-arc-shaped and is abutted against the vibrating inner tube (52) and is close to the second end face of the elastic tube (53), the elastic sliding rod (55) is arranged in the outer circular sleeve (57), one side of the second vibrator (56) is connected with a third spring (51) at one end of the elastic sliding rod (55) arranged in the elastic tube (50), the other end of the third spring (51) is connected with the end face of the inner wall of the elastic tube (50), and a plurality of elastic tubes (50) are communicated with one another on the end face of the connecting circular plate (63) and are provided with air injection nozzles (64).

8. The plastic valve handle injection molding die according to claim 6, wherein the demolding air cavity (30) is close to the end face of the rotating screwing block molding cavity (24), a first demolding pipe (40) is arranged on two sides of a bump of the rotating screwing block molding cavity (24) in a communicating mode, a first piston top block (45) with a cavity in the center is arranged in the first demolding pipe (40) in a sliding mode, an outer circle face of one end of the first piston top block (45) close to the pushing base (31) is conical, one end of a conical surface of the first piston top block (45) is communicated with an inverted cone air cavity (46) with a hollow middle part, an outer circle face of the inverted cone air cavity (46) close to the first piston top block (45) is conical, a plurality of holes (47) are uniformly formed in the inclined face of the inverted cone air cavity (46) close to the first piston top block (45) in a communicating mode in the circumferential direction, a hollow ejector rod (44) is arranged on the end face of the air ejecting cone air cavity (46) away from the first piston top block (45), and the other end face of the hollow ejector rod (44) is communicated with the linkage plate (35).

9. The plastic valve handle injection molding die according to claim 8, wherein the hollow ejector rod (44) is provided with a first vibrator (41) on the inner and outer circular surfaces of the demolding air cavity (30), one end, close to the first demolding pipe (40), of the first vibrator (41) is connected and provided with a plurality of second springs (42), one end, far away from the pushing base (31), of the second springs (42) is connected and provided with a vibration contact plate (43), one end, far away from the first vibrator (41), of the vibration contact plate (43) is abutted to the top of the first demolding pipe (40), one side of the vibration contact plate (43) is provided with a heat absorption block (48) in the first piston ejector block (45), and one side, on two side inner walls of the demolding air cavity (30), of the first vibrator (41) is provided with a refrigerator (33).