CN223735351U - Silicone rubber injection molding die - Google Patents

Abstract

The utility model relates to the technical field of injection molds, in particular to a silicone rubber injection molding mold, which comprises a base, wherein a lower mold component is arranged at the top of the base, an upper mold component is arranged above the lower mold component, two driving cylinders for driving the upper mold component to move are also arranged on the base, the two driving cylinders are respectively arranged at two sides of the lower mold component, a demolding component for assisting in demolding of a finished product is also arranged in the lower mold component, and the top of the demolding component sequentially penetrates through the lower mold component and the upper mold component and extends into the upper mold component. The device realizes the whole-process automatic operation from mold closing, injection molding and demolding to waste material cutting through the cooperation of the driving air cylinder and the electric push rod, thereby greatly saving labor cost, obviously improving production efficiency, reducing interference of human factors in an automatic process, ensuring high consistency of each injection molding and ensuring stability of product quality.

Description

Silicone rubber injection molding die

Technical Field

The utility model relates to the technical field of injection molds, in particular to a silicone rubber injection molding mold.

Background

The silicone rubber product is made by taking methyl vinyl silicone rubber as base rubber, adding various fillers, and carrying out a plurality of processes such as mixing, filtering, vulcanizing, mould pressing and the like, has excellent flexibility and elasticity, can bear larger deformation without cracking, and is widely applied in various fields;

Because there is certain gap between the upper and lower moulds of injection mold, when processing, the raw materials can be unavoidable overflowed through the gap to form round overlap around the finished product after solidifying, need take off the back at the finished product, the manual work is resected the waste material around the finished product again, and comparatively troublesome, and because the waste material links to each other closely with the finished product, just probably causes the destruction to the finished product because of the waste material is closely continuous with the finished product, leads to the qualification rate of product to descend, has still increased production and cost of labor simultaneously.

Disclosure of utility model

The utility model aims to provide a silicone rubber injection molding die for solving the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides a silicone rubber injection moulding mould, includes the base, lower mould subassembly is installed at the top of base, the top of lower mould subassembly is provided with the mould subassembly, still install two drive cylinders that are used for driving the removal of mould subassembly on the base, and two drive cylinders set up respectively in the both sides of lower mould subassembly, still be provided with the drawing of patterns subassembly that is used for assisting the finished product drawing of patterns in the lower mould subassembly, and the top of drawing of patterns subassembly runs through lower mould subassembly and last mould subassembly in proper order and extends to the upper mould subassembly, the top of base still is provided with and sprays the subassembly, spray the subassembly and set up in one side of lower mould subassembly, and spray the discharge end of subassembly towards on the lower mould subassembly;

The upper die assembly is further provided with a cutting assembly for cutting off waste materials, and the extending end of the demolding assembly is connected with the cutting assembly in the upper die assembly.

Preferably, the lower die assembly comprises a lower die body, the lower die body is fixedly arranged on the base, a forming cavity is formed in the top of the lower die body, the demolding assembly is slidably connected in the forming cavity, two groups of material injection openings for conveying raw materials are formed in the front end of the lower die body, and the two material injection openings are communicated with the forming cavity.

Preferably, the upper die assembly comprises a supporting plate, an upper die body is fixedly connected to the bottom of the supporting plate, a die core is slidably connected to the bottom of the upper die body, two sliding rods are fixedly connected to the top of the die core, one ends, far away from the die core, of the two sliding rods sequentially penetrate through the upper die body and the supporting plate and extend to the outer side of the supporting plate, limiting plates are arranged at the tops of the two sliding rods, and the cutting assembly is arranged in the upper die body.

Preferably, the cutting assembly comprises a cutter, the cutter is arranged on the outer side of the mold core in a sliding manner, the top of the cutter is fixedly connected with a connecting frame, the top of the connecting frame is fixedly connected with two electric push rods, the tops of the two electric push rods are fixedly connected with a connecting plate, the connecting frame and the connecting plate are arranged in an upper mold body in a sliding manner, two sliding grooves for the demolding assembly to slide are formed in the bottom of the upper mold body, and the top of the demolding assembly extends into the upper mold body through the sliding grooves and is fixed with the bottom of the connecting plate.

Preferably, the demolding assembly comprises a synchronous frame, wherein the top of the synchronous frame is fixed with the bottom of the connecting plate, a pushing rod is fixedly connected to the synchronous frame, the pushing rod slides in the lower mold body, a top plate is fixedly connected to the top of the pushing rod, the top plate is clamped at the bottom of the molding cavity, a reset spring is further sleeved on the pushing rod, one end of the reset spring is fixed with the pushing rod, and the other end of the reset spring is fixed with the bottom of the lower mold body.

Preferably, the spraying assembly comprises two supporting frames, wherein the two supporting frames are arranged at the top of the base, the two supporting frames are respectively arranged at two ends of the lower die body, a transmission screw is rotationally connected between the two supporting frames, one supporting frame is also provided with a servo motor, the output end of the servo motor is fixed with the transmission screw through a coupler, an auxiliary rod is also arranged between the two supporting frames, a sliding box is connected onto the transmission screw in a threaded manner, one end of the sliding box, which is close to a spray head, is connected onto the spray head in a sliding manner, a spray head is arranged on one side of the sliding box, which is close to the lower die body, and the spray head is communicated with the sliding box;

The spraying assembly further comprises a release agent storage box, the liquid outlet end of the release agent storage box is communicated with a communicating pipe, and the other end of the communicating pipe is communicated with the sliding box.

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

1. When the plastic cutting die is used, after injection molding, the electric push rod is started to push the cutter to move downwards, so that waste around the die core can be accurately cut, and meanwhile, in the process, the die core still keeps a die assembly state with the molding cavity, so that damage to a finished product during cutting of the waste is effectively avoided, the cutting efficiency of the waste is improved, and the integrity of the finished product is ensured.

2. According to the utility model, the upper die body and the lower die body are linked to realize the up-and-down movement of the top plate, and after the die core is separated from the forming cavity, the top plate can rapidly eject a finished product from the forming cavity to finish the demoulding operation.

3. When the utility model is used, after one-time injection molding is finished, the driving screw is driven to rotate by the servo motor, so that the sliding box drives the spray head to slide along the driving screw, and the release agent is uniformly sprayed into the molding cavity.

4. According to the utility model, through the cooperation of the driving cylinder and the electric push rod, the whole-process automatic operation from mold closing, injection molding and demolding to waste cutting is realized, so that the labor cost is greatly saved, the production efficiency is remarkably improved, meanwhile, the interference of human factors is reduced by an automatic process, and the high consistency of each injection molding can be maintained, thereby ensuring the stability of the product quality.

Drawings

FIG. 1 is a schematic view of a first view angle of the present utility model;

FIG. 2 is a schematic view of the lower die assembly of the present utility model;

FIG. 3 is a schematic view of the structure of the lower mold body according to the present utility model;

FIG. 4 is a schematic view of the upper die assembly of the present utility model;

FIG. 5 is a schematic view of a portion of the structure of the upper die assembly and stripper assembly of the present utility model;

FIG. 6 is a schematic view of a second view of the present utility model;

Fig. 7 is a schematic view of a spray assembly according to the present utility model.

In the figure, 1, a base; 11, a driving cylinder, 2, a lower die assembly, 21, a lower die body, 22, a forming cavity, 23, a material injection port, 3, an upper die assembly, 31, a supporting plate, 32, an upper die body, 33, a sliding rod, 34, a die core, 35, a sliding groove, 36, a cutter, 37, a connecting frame, 38, an electric push rod, 39, a connecting plate, 4, a spraying assembly, 41, a supporting frame, 42, a servo motor, 43, a driving screw, 44, an auxiliary rod, 45, a sliding box, 46, a spray head, 47, a release agent storage box, 48, a communicating pipe, 5, a release assembly, 51, a synchronous frame, 52, a pushing rod, 53, a top plate, 54 and a return spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-7, a silicone rubber injection molding mold comprises a base 1, a lower mold assembly 2 is installed at the top of the base 1, an upper mold assembly 3 is arranged above the lower mold assembly 2, two driving cylinders 11 for driving the upper mold assembly 3 to move are also installed on the base 1, the two driving cylinders 11 are respectively arranged at two sides of the lower mold assembly 2, a demolding assembly 5 for assisting in demolding of a finished product is also arranged in the lower mold assembly 2, the top of the demolding assembly 5 sequentially penetrates through the lower mold assembly 2 and the upper mold assembly 3 and extends into the upper mold assembly 3, a spraying assembly 4 is further arranged at the top of the base 1, the spraying assembly 4 is arranged at one side of the lower mold assembly 2, the discharge end of the spraying assembly 4 faces the lower mold assembly 2, a cutting assembly for cutting waste materials is further arranged in the upper mold assembly 3, the extending end of the demolding assembly 5 is connected with the cutting assembly in the upper mold assembly 3, the lower mold assembly 2 comprises a lower mold body 21, the lower mold body 21 is fixedly installed on the base 1, a demolding assembly 22 is arranged at the top of the lower mold body 21, the demolding assembly 5 is sequentially penetrated through the lower mold assembly 2 and the upper mold body 2 and the upper mold core 32, two mold cores 32 are sequentially connected with two support plates 31, and two support plates 32 are respectively arranged at the two ends of the upper mold core 32 and the upper mold core 32 are respectively, and the two support plates are respectively connected with the upper mold core plates 32 and the upper mold core plates 32 are respectively, and the two support plates are respectively connected with the upper mold core plates and the two mold core plates and the upper mold core plates and the two mold core mold plates are respectively 33 are respectively connected;

When the mold is used, the driving cylinder 11 is started firstly, the driving cylinder 11 drives the supporting plate 31 to move, the upper mold body 32 and the lower mold body 21 are assembled, after the upper mold body 32 and the lower mold body 21 are assembled, the mold core 34 and the molding cavity 22 form a mold cavity, and raw materials are conveyed into the mold cavity through the material injection port 23 to be molded;

After the raw materials are molded, the driving cylinder 11 is started again, so that the driving cylinder 11 drives the supporting plate 31 to move upwards, when the supporting plate 31 moves upwards, the supporting plate 31 drives the upper die body 32 to move upwards along the sliding rod 33 at the same time, so that the upper die body 32 is separated from the lower die body 21, at the moment, the die core 34 slides in the upper die body 32 and is not separated from the molding cavity 22, as the upper die body 32 is separated from the lower die body 21, flash during injection molding is exposed, and when the supporting plate 31 drives the upper die body 32 to move to be in contact with a limiting plate at the top of the sliding rod 33, the driving cylinder 11 is closed, so that the supporting plate 31 and the upper die body 32 are fixed;

activating the cutting assembly within the upper mold body 32 to move the cutting assembly downwardly along the mold core 34 to cut off the excess scrap material around the finished product;

after cutting off, the driving cylinder 11 is continuously started, at the moment, the supporting plate 31 is abutted against the limiting plate on the sliding rod 33, and the sliding rod 33 drives the mold core 34 to move upwards synchronously, so that the mold core 34 is separated from the forming cavity 22;

When the supporting plate 31 and the upper die body 32 continuously move upwards, the demolding assembly 5 is driven to move, so that the demolding assembly 5 ejects products in the molding cavity 22, and workers take off the ejected products together with waste.

Referring to fig. 1-6, the cutting assembly includes a cutting knife 36, the cutting knife 36 is slidably disposed on the outer side of the mold core 34, a connecting frame 37 is fixedly connected to the top of the cutting knife 36, two electric push rods 38 are fixedly connected to the top of the connecting frame 37, a connecting plate 39 is fixedly connected to the top of the two electric push rods 38, the connecting frame 37 and the connecting plate 39 are both slidably disposed in the upper mold body 32, two sliding grooves 35 for sliding the demolding assembly 5 are further formed in the bottom of the upper mold body 32, the top of the demolding assembly 5 extends into the upper mold body 32 through the sliding grooves 35 and is fixed with the bottom of the connecting plate 39, the demolding assembly 5 includes a synchronization frame 51, the top of the synchronization frame 51 is fixed with the bottom of the connecting plate 39, a pushing rod 52 is fixedly connected to the synchronization frame 51, the pushing rod 52 slides in the lower mold body 21, a top plate 53 is fixedly connected to the top of the pushing rod 52 and is clamped to the bottom of the molding cavity 22, a reset spring 54 is further sleeved on the pushing rod 52, one end of the reset spring 54 is fixed with the pushing rod 52, and the other end is fixed with the bottom of the lower mold body 21;

Because the connecting frame 37 and the connecting plate 39 are arranged in the upper die body 32 in a sliding manner, after a product is molded, when the supporting plate 31 drives the upper die body 32 to move upwards, the connecting frame 37 and the connecting plate 39 slide in the upper die body 32 from the top of the upper die body 32 towards the bottom of the upper die body 32, so that the connecting frame 37 drives the cutter 36 to extend out of the bottom of the upper die body 32, when the supporting plate 31 and the upper die body 32 stop moving and then trimming is carried out, the electric push rod 38 is started, the output end of the electric push rod 38 pushes the connecting frame 37 to move downwards, so that the connecting frame 37 drives the cutter 36 to move downwards, waste around the die core 34 is cut, and at the moment, the die core 34 still keeps a die clamping state with the molding cavity 22, and damage to a finished product is avoided when the waste is cut;

When the waste is cut, the electric push rod 38 is started to drive the cutter 36 to retract, meanwhile, the driving cylinder 11 is continuously started, the supporting plate 31 and the upper die body 32 drive the die core 34 to move upwards under the action of the sliding rod 33, so that the die core 34 is separated from the forming cavity 22, and as the connecting frame 37 and the connecting plate 39 are moved to the lowest end in the upper die body 32 at the moment, the upper die body 32 moves upwards again, the synchronous frame 51 is pulled to move upwards through the connecting plate 39, the synchronous frame 51 drives the top plate 53 to eject out of the forming cavity 22 through the pushing rod 52, and the finished product in the forming cavity 22 is demolded and ejected;

After the product is taken out, the driving cylinder 11 is started again to drive the supporting plate 31 and the upper die body 32 to slightly move downwards, the synchronous frame 51 is moved downwards under the action of the resilience force of the return spring 54, the top plate 53 is moved downwards from the forming cavity 22, and the top plate 53 can be reset.

Referring to fig. 1, 6 and 7, the spraying assembly 4 includes two supporting frames 41, the two supporting frames 41 are all mounted on the top of the base 1, the two supporting frames 41 are respectively disposed at two ends of the lower die body 21, a transmission screw 43 is rotatably connected between the two supporting frames 41, a servo motor 42 is further mounted on one of the supporting frames 41, an output end of the servo motor 42 is fixed with the transmission screw 43 through a coupling, an auxiliary rod 44 is further mounted between the two supporting frames 41, a sliding box 45 is threadedly connected to the transmission screw 43, one end of the sliding box 45 close to the spraying head 46 is slidably connected to the spraying head 46, one side of the sliding box 45 close to the lower die body 21 is provided with the spraying head 46 and is communicated with the sliding box 45, the spraying assembly 4 further includes a release agent storage box 47, a liquid outlet end of the release agent storage box 47 is communicated with a communication pipe 48, and the other end of the communication pipe 48 is communicated with the sliding box 45;

When the top plate 53 is reset, the servo motor 42 is started and the communicating pipe 48 is opened, so that the communicating pipe 48 conveys the release agent in the release agent storage box 47 to the sliding box 45 and sprays the release agent into the forming cavity 22 through the spray nozzle 46, and when the servo motor 42 is started, the servo motor 42 drives the driving screw 43 to rotate, so that the sliding box 45 drives the spray nozzle 46 to slide from one side to the other side of the lower die body 21 along the driving screw 43, and the release agent can be uniformly sprayed into the forming cavity 22.

When the working principle is that when the die is used, the driving cylinder 11 is started firstly, the driving cylinder 11 drives the supporting plate 31 to move, the upper die body 32 and the lower die body 21 are matched, after the die is matched, the die core 34 and the forming cavity 22 form a die cavity, and raw materials are conveyed into the die cavity through the material injection port 23 for forming;

after the raw materials are molded, the driving cylinder 11 is started again to drive the supporting plate 31 to move upwards, when the supporting plate 31 moves upwards, the supporting plate 31 drives the upper die body 32 to move upwards along the sliding rod 33 at the same time, so that the upper die body 32 is separated from the lower die body 21, the die core 34 slides in the upper die body 32 and is not separated from the molding cavity 22, as the upper die body 32 is separated from the lower die body 21, flash during injection molding is exposed, and when the supporting plate 31 drives the upper die body 32 to move to be in contact with a limiting plate at the top of the sliding rod 33, the driving cylinder 11 is closed, so that the supporting plate 31 and the upper die body 32 are fixed;

Starting the electric push rod 38, so that the output end of the electric push rod 38 pushes the connecting frame 37 to move downwards, the connecting frame 37 drives the cutter 36 to move downwards, waste around the mold core 34 is cut, and at the moment, the mold core 34 still keeps a mold closing state with the molding cavity 22, so that damage to a finished product during cutting of the waste is avoided;

When the waste is cut, the electric push rod 38 is started to drive the cutter 36 to retract, the driving cylinder 11 is continuously started, the supporting plate 31 and the upper die body 32 drive the die core 34 to move upwards under the action of the sliding rod 33 to separate the die core 34 from the forming cavity 22, and the connecting frame 37 and the connecting plate 39 are moved to the lowest end in the upper die body 32 at the moment, the upper die body 32 moves upwards again to enable the synchronous frame 51 to be pulled to move upwards through the connecting plate 39, the synchronous frame 51 drives the top plate 53 to be ejected from the forming cavity 22 through the pushing rod 52 to eject a finished product in the forming cavity 22, after the finished product is taken out, the driving cylinder 11 is started to drive the supporting plate 31 and the upper die body 32 to move downwards slightly, and the synchronous frame 51 moves downwards under the resilience force of the reset spring 54 to reset the top plate 53;

When the top plate 53 is reset, the servo motor 42 is started to drive the drive screw 43 to rotate, so that the sliding box 45 drives the spray head 46 to slide from one side to the other side of the lower die body 21 along the drive screw 43, and the release agent is uniformly sprayed into the forming cavity 22 to prepare for the next injection molding operation.

It should be noted that, each device in the application is a common device in the market, and can be selected according to the needs when in specific use, and the circuit connection relationship of each device belongs to simple series connection and parallel connection circuits, no innovation point exists at the circuit connection part, and the structure, principle and control mode are all known by the skilled person through technical manuals or known through routine experiment methods, so that the implementation can be easier for the skilled person, and the application belongs to the prior art and is not repeated.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The silicon rubber injection molding die comprises a base (1), and is characterized in that a lower die assembly (2) is arranged at the top of the base (1), an upper die assembly (3) is arranged above the lower die assembly (2), two driving air cylinders (11) for driving the upper die assembly (3) to move are further arranged on the base (1), the two driving air cylinders (11) are respectively arranged at two sides of the lower die assembly (2), a demolding assembly (5) for assisting in demolding of a finished product is further arranged in the lower die assembly (2), the top of the demolding assembly (5) sequentially penetrates through the lower die assembly (2) and the upper die assembly (3) and extends into the upper die assembly (3), a spraying assembly (4) is further arranged at the top of the base (1), the spraying assembly (4) is arranged at one side of the lower die assembly (2), and the discharging end of the spraying assembly (4) faces the lower die assembly (2);

The upper die assembly (3) is further provided with a cutting assembly for cutting off waste, and the extending end of the demolding assembly (5) is connected with the cutting assembly in the upper die assembly (3).

2. The silicone rubber injection molding die according to claim 1, wherein the lower die assembly (2) comprises a lower die body (21), the lower die body (21) is fixedly arranged on the base (1), a molding cavity (22) is formed in the top of the lower die body (21), the demolding assembly (5) is slidably connected in the molding cavity (22), two groups of material injection ports (23) for conveying raw materials are formed in the front end of the lower die body (21), and the two material injection ports (23) are communicated with the molding cavity (22).

3. The silicone rubber injection molding die according to claim 1, wherein the upper die assembly (3) comprises a supporting plate (31), an upper die body (32) is fixedly connected to the bottom of the supporting plate (31), a die core (34) is slidably connected to the bottom of the upper die body (32), two sliding rods (33) are fixedly connected to the top of the die core (34), one ends of the two sliding rods (33), far away from the die core (34), sequentially penetrate through the upper die body (32) and the supporting plate (31) and extend to the outer side of the supporting plate (31), limiting plates are mounted on the tops of the two sliding rods (33), and the cutting assembly is arranged in the upper die body (32).

4. The silicone rubber injection molding die according to claim 3, wherein the cutting assembly comprises a cutter (36), the cutter (36) is slidably arranged on the outer side of the die core (34), a connecting frame (37) is fixedly connected to the top of the cutter (36), two electric push rods (38) are fixedly connected to the top of the connecting frame (37), a connecting plate (39) is fixedly connected to the top of the two electric push rods (38), the connecting frame (37) and the connecting plate (39) are slidably arranged in the upper die body (32), two sliding grooves (35) for sliding of the demolding assembly (5) are further formed in the bottom of the upper die body (32), and the top of the demolding assembly (5) extends into the upper die body (32) through the sliding grooves (35) and is fixed with the bottom of the connecting plate (39).

5. The silicone rubber injection molding die of claim 4, wherein the demolding assembly (5) comprises a synchronous frame (51), the top of the synchronous frame (51) is fixed with the bottom of the connecting plate (39), a pushing rod (52) is fixedly connected to the synchronous frame (51), the pushing rod (52) slides in the lower die body (21), a top plate (53) is fixedly connected to the top of the pushing rod (52), the top plate (53) is clamped at the bottom of the molding cavity (22), a return spring (54) is sleeved on the pushing rod (52), one end of the return spring (54) is fixed with the pushing rod (52), and the other end of the return spring is fixed with the bottom of the lower die body (21).

6. The silicone rubber injection molding die according to claim 2, wherein the spraying assembly (4) comprises two supporting frames (41), the two supporting frames (41) are all installed at the top of the base (1), the two supporting frames (41) are respectively arranged at two ends of the lower die body (21), a transmission screw (43) is rotatably connected between the two supporting frames (41), a servo motor (42) is further installed on one supporting frame (41), the output end of the servo motor (42) is fixed with the transmission screw (43) through a coupler, an auxiliary rod (44) is further installed between the two supporting frames (41), a sliding box (45) is connected onto the transmission screw (43) in a threaded mode, one end, close to a spray head (46), of the sliding box (45) is connected onto the spray head (46) in a sliding mode, a spray head (46) is installed on one side, close to the lower die body (21), of the sliding box (45) is communicated with the sliding box (45);

The spraying assembly (4) further comprises a release agent storage box (47), a communicating pipe (48) is communicated with the liquid outlet end of the release agent storage box (47), and the other end of the communicating pipe (48) is communicated with the sliding box (45).