CN224060299U - Plastic box injection molding device - Google Patents

Abstract

The utility model provides a plastic box injection molding device, belongs to the technical field of injection molding, and solves the technical problem that the existing plastic box injection molding device cannot perform synchronous trimming treatment when a plastic box is demolded. The utility model provides a plastic box injection molding device, includes frame and the feed cylinder of fixed mounting in the frame top, and the bottom fixedly connected with of feed cylinder moulds plastics the section of thick bamboo, and the exit end fixedly connected with of section of thick bamboo of moulding plastics moulds plastics the mouth, and the opposite side fixed mounting of moulding plastics the mouth has the fixed plate. According to the utility model, the tooth grooves are formed on two sides of the die cavity block, under the meshing action of the tooth grooves and the gears, the other side of the gears is meshed with the connecting rack, so that when the die cavity block moves to one side of the die core to be closed, the trimming knife automatically moves to one side far away from the die core, the interference of molding of the plastic box is avoided, and when the die cavity block and the die core are opened and demoulded, the trimming knife is synchronously driven to the surface of the die core to extrude and trim, so that the accuracy of injection molding of the plastic box is ensured.

Description

Plastic box injection molding device

Technical Field

The utility model belongs to the technical field of injection molding, and relates to an injection molding device, in particular to an injection molding device for a plastic box.

Background

The plastic is a synthetic polymer material with plasticity, the plastic box is generally formed by injection molding, and the injection molding is a method for producing and modeling industrial products. Injection molding can also be divided into injection molding compression molding and die casting, in which an injection molding machine is a main molding device for molding thermoplastic or thermosetting plastic into plastic products of various shapes by using a plastic molding die, i.e., various dies and tools for injection molding, blow molding, extrusion, die casting or forging, smelting, stamping, etc. in industrial production to obtain desired products, in short, the die is a tool for manufacturing molded articles, and injection molding is performed by using an injection molding machine and a die.

According to the search, a plastic part injection molding device disclosed in Chinese patent literature [ application number: CN202322349323.9; bulletin number: CN220534837U ] comprises a base, wherein the base is connected with a lower die, the base is connected with an air cylinder, the air cylinder is connected with an upper die, a sliding groove is arranged on the inner side of the base, a sliding plate is connected on the inner side of the sliding groove in a sliding manner, a return spring is connected on the inner side of the sliding groove, an ejector plate is connected on the inner side of the lower die, an ejector rod is connected on the bottom of the ejector plate, a limiting plate is connected at the free end of the ejector rod, an ejector spring is sleeved on the ejector rod, the sliding plate is provided with an inclined groove, the limiting plate is abutted against the inclined groove, a pushing inclined surface block is connected at the free end of the sliding plate, a fixing frame is connected on the side wall of the base, and a limiting sliding groove is arranged on the fixing frame.

The plastic part injection molding device disclosed in the patent can rapidly eject a molded plastic part from a molding die through the ejector plate, but when the injection molding device is used for injection molding processing of a plastic box, manual trimming processing is usually required due to limited accuracy of the edge molding position of the plastic box, the degree of mechanization is low, manual trimming is easy to cause hand cutting, the safety is low, scratches are easily formed on the edge of the plastic box, and the attractiveness and molding quality of the plastic box are seriously affected.

Disclosure of utility model

The utility model aims to solve the problems in the prior art and provides a plastic box injection molding device, which aims to solve the technical problems of realizing synchronous trimming of the plastic box injection molding device during injection molding and demolding.

The aim of the utility model can be achieved by the following technical scheme:

the plastic box injection molding device comprises a frame and a feeding cylinder fixedly arranged above the frame, wherein the bottom end of the feeding cylinder is fixedly connected with an injection molding cylinder, the outlet end of the injection molding cylinder is fixedly connected with an injection molding opening, the other side of the injection molding opening is fixedly provided with a fixing plate, the fixing plate is fixedly arranged on the surface of the frame, one side of the fixing plate is fixedly connected with a plurality of guide posts, the other end of the guide posts is fixedly provided with a fixing seat, and the fixing seat is fixedly connected on the surface of the frame;

the surface of the fixed seat is fixedly provided with a telescopic push rod, the output end of the telescopic push rod is fixedly connected with a moving block, the moving block is slidably connected with the outer wall of the guide post, one side of the moving block, which is far away from the telescopic push rod, is fixedly connected with a die holder, and the surface of the die holder is fixedly provided with a die cavity block;

the outer wall of the fixing plate is fixedly connected with a mold core, the mold core is arranged corresponding to the mold cavity block, the outer side wall of the mold core is connected with a trimming cutter in a fitting manner, the outer wall of the trimming cutter is fixedly provided with a connecting block, and the outer wall of the connecting block is connected with a guide plate in a sliding manner;

The rack is fixedly arranged on two sides of the connecting block, the outer wall of the rack is connected with the gear in a meshed mode, and the gear is rotationally connected below the guide plate.

By adopting the structure, the movable block is driven to move through the telescopic push rod, the movable block drives the die holder to be attached to one side of the die core, the die cavity block is correspondingly closed in the die core, simultaneously, under the action of tooth grooves formed in two sides of the die cavity block, the movable block is driven to move to one side of the gear through the meshing connection of the tooth grooves and the gears, the gears synchronously rotate, the rack drives the trimming knife to move to one side of the die cavity block through the connecting block under the action of the meshing connection of the other side of the racks, the trimming knife is prevented from interfering with the die core and the die cavity block, the plastic box is convenient to accurately form, after the die cavity block corresponds to the die core, plastic raw materials are added into the die cavity block and the die core through the plastic injection molding cylinder, the raw materials enter the die cavity block to be subjected to injection molding through the fixing plate, after the plastic box is formed in the die cavity block and the die core, the die cavity block is driven to move through the telescopic push rod, the die cavity block is opened on one side of the die core, and the die cavity block is meshed with the outer wall of the gear to connect the tooth grooves, and the connecting block is driven to move to the die cavity block to one side far away, the trimming knife is driven to move to the surface of the die cavity block, the trimming knife is prevented from the die core, the die core is convenient to be attached to the annular knife, and the plastic box is extruded to the surface of the trimming knife is convenient to attach to the die core.

Tooth grooves which are meshed with the outer wall of the gear are formed in two sides of the die cavity block, and the tooth grooves and the racks are symmetrically arranged on two sides of the gear.

By adopting the structure, the tooth groove is formed in the outer wall of the die cavity block, under the meshing effect of the tooth groove and the gear, the die cavity block drives the tooth groove to be meshed with the bottom end of the gear, and the gear synchronously rotates to drive the rack to move through the tooth groove and the rack which are meshed with each other at the two sides of the gear, so that the rack drives the trimming knife to move towards the die core through the connecting block at one side, the trimming knife extrudes and trims the surface of the die core, the die cavity block is enabled to carry out annular trimming on the surface of the die core automatically after the die cavity block is opened, and the forming accuracy and the aesthetic degree of the plastic box are improved.

The fixed plate and the fixed seat are fixedly connected to the two ends of the guide plate respectively, a groove capable of accommodating the sliding of the connecting block is formed in the surface of the guide plate, and the moving block is connected to the outer wall of the guide plate in a sliding manner.

By adopting the structure, through the setting of deflector for the connecting block is accurate through the surface movement of deflector when rack drive, moreover through the sliding connection of movable block and deflector, then makes the movable block carry out accurate spacing at the outer wall of deflector, has ensured the movable block and has driven the removal accuracy of die holder, has realized the accurate butt joint of die holder and mold core, is favorable to improving the shaping accuracy of plastic case.

The connecting blocks are symmetrically arranged about the central axis of the trimming knife, and the trimming knife is in an annular structure.

By adopting the structure, the trimming knife is annularly arranged, so that the trimming knife can synchronously carry out integral circular cutting on the plastic box when extruding one side of the mold core, the trimming efficiency and consistency of the plastic box are ensured, and the connecting blocks are symmetrically arranged on the two sides of the trimming knife, so that the extrusion force application of the trimming knife is balanced, and the trimming effect of the trimming knife and the molding quality of the plastic box are ensured.

The outer wall rotation of gear is connected with the curb plate, and curb plate fixed connection is at the outer wall of deflector.

By adopting the structure, through the arrangement of the side plates, the gear is enabled to rotate at one side of the guide plate, the transmission accuracy of the gear driving the racks and the tooth grooves at two sides is ensured, and the structure is simple and the maintenance cost is low.

The lower part of the mold core is provided with a discharge hole which is arranged on the surface of the frame.

By adopting the structure, the lower part of the mold core is provided with the discharge hole, so that the injection molding plastic box is discharged through the discharge hole after trimming and demolding, the order of injection molding discharge of the plastic box is ensured, and the plastic box is convenient for mass production.

Compared with the prior art, the injection molding device for the plastic box has the following advantages:

According to the utility model, the tooth grooves are formed on two sides of the die cavity block, under the meshing action of the tooth grooves and the gears, the racks are connected on the other side of the gears in a meshing manner, so that when the die cavity block moves to one side of the die core to be closed, the trimming knife automatically moves to one side far away from the die core, the interference of molding of the plastic box is avoided, when the die cavity block and the die core are opened and demoulded, the trimming knife is synchronously transmitted to the surface of the die core to extrude and trim, the precision of injection molding of the plastic box is ensured, meanwhile, the subsequent manual trimming is avoided, the labor cost is greatly saved, the transmissibility is good, and the integration of molding and trimming is realized.

Drawings

Fig. 1 is a schematic structural view of an injection molding apparatus for plastic cases according to the present utility model.

Fig. 2 is a schematic structural view of a moving block and a fixed plate in the present utility model.

FIG. 3 is a schematic cross-sectional view of a deburring tool and rack of the present utility model;

Fig. 4 is a schematic cross-sectional view of a rack and a guide plate according to the present utility model.

In the figure:

1. A frame; 2, a feeding cylinder, 3, an injection molding cylinder, 4, an injection molding port, 5, a fixed plate, 6, a guide post, 7, a fixed seat, 8, a telescopic push rod, 9, a moving block, 10, a die holder, 11, a die cavity block, 12, a tooth slot, 13, a die core, 14, a trimming knife, 15, a connecting block, 16, a rack, 17, a guide plate, 18, a gear, 19, a side plate, 20 and a discharge port.

Detailed Description

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

Examples

As shown in fig. 1-4;

The plastic box injection molding device comprises a frame 1, a feeding cylinder 2, an injection cylinder 3, an injection port 4, a fixed plate 5, guide posts 6, a fixed seat 7, a telescopic push rod 8, a moving block 9, a die holder 10, a die cavity block 11, a tooth slot 12, a die core 13, a trimming knife 14, a connecting block 15, a rack 16, a guide plate 17, a gear 18, a side plate 19 and a discharge port 20, wherein the injection cylinder 3 is fixedly connected to the bottom end of the feeding cylinder 2, the inside of the injection cylinder 3 is spirally fed, meanwhile, the injection port 4 is fixedly connected to the outlet end of the injection cylinder 3, a fixed plate 5 is fixedly arranged on the other side of the injection port 4, the injection cylinder 3 and the injection port 4 are arranged, the device is convenient to feed, the fixed plate 5 is fixedly arranged on the surface of the frame 1, one side of the fixed plate 5 is fixedly connected with a plurality of guide posts 6, meanwhile, the fixed seat 7 is fixedly arranged at the other end of the guide posts 6, and the fixed seat 7 is fixedly connected to the surface of the frame 1, through the arrangement, the fixed seat 6 is fixedly arranged between the fixed plates 5 and 7, and the stability of the device is ensured;

Considering the injection molding effect of the plastic box, the mold core 13 is fixedly connected to the outer wall of the fixed plate 5, the mold core 13 is correspondingly arranged with the mold cavity block 11, and the injection molding port 4 is arranged at the other side of the fixed plate 5, so that the plastic raw material is injection molded between the mold core 13 and the mold cavity block 11 through the injection molding port 4, meanwhile, the discharge port 20 is arranged below the mold core 13, the discharge port 20 is arranged on the surface of the frame 1, thereby ensuring the order of injection molding and discharge of the plastic box, and facilitating the mass production of the plastic box;

Further, in order to realize synchronous trimming of the injection molded plastic box, the outer side wall of the mold core 13 is connected with a trimming cutter 14 in a bonding way, the outer wall of the trimming cutter 14 is fixedly provided with a connecting block 15, the trimming cutter 14 is in an annular structure, so that the trimming cutter 14 can accurately and annularly cut the injection molded plastic box, meanwhile, the connecting block 15 is symmetrically arranged relative to the central axis of the trimming cutter 14, the moving balance and the force application balance of the trimming cutter 14 are ensured, the trimming effect of the trimming cutter 14 and the molding quality of the plastic box are ensured, in particular, in order to realize synchronous driving of the trimming cutter 14, the outer wall of the connecting block 15 is slidably connected with a guide plate 17, the two sides of the connecting block 15 are fixedly provided with racks 16, the outer wall of the racks 16 is in meshed connection with gears 18, in order to realize the installation and rotation effect of the gears 18, the gears 18 are in rotary connection below the guide plate 17 in particular, the outer wall of the gear 18 is rotationally connected with the side plate 19, the side plate 19 is fixedly connected with the outer wall of the guide plate 17, the gear 18 is enabled to rotate stably at one side of the guide plate 17 through the arrangement of the side plate 19, the transmission accuracy of the gear 18 driving the racks 16 and the tooth grooves 12 at two sides is ensured, meanwhile, the two ends of the guide plate 17 are respectively fixedly connected with the fixed plate 5 and the fixed seat 7 in consideration of the installation effect of the guide plate 17, the surface of the guide plate 17 is provided with a groove capable of accommodating the sliding of the connecting block 15, the outer wall of the guide plate 17 is slidingly connected with the moving block 9, the connecting block 15 is enabled to move accurately on the surface of the guide plate 17 when being driven by the racks 16 through the arrangement of the guide plate 17, the moving block 9 is enabled to carry out accurate limiting on the outer wall of the guide plate 17 through the sliding connection of the moving block 9, the moving accuracy of the moving block 9 driving the die holder 10 is ensured, the accurate butt joint of the die holder 10 and the die core 13 is realized, and the molding accuracy of the plastic box is improved;

In order to realize the drive to movable block 9, fixed surface at fixing base 7 has flexible push rod 8, and flexible push rod 8's output fixedly connected with movable block 9, movable block 9 sliding connection is in the outer wall of guide post 6, one side fixedly connected with die holder 10 of movable block 9 keeping away from flexible push rod 8, and the fixed surface mounting of die holder 10 has die cavity piece 11, the tooth groove 12 of being connected with the outer wall meshing of gear 18 has all been seted up to the both sides of die cavity piece 11, and tooth groove 12 and rack 16 symmetry set up in the both sides of gear 18, through such setting, when tooth groove 12 and gear 18's meshing effect, then make die cavity piece 11 drive tooth groove 12 and rack 16 when the bottom of gear 18 is meshed to, then make gear 18 synchronous rotation drive rack 16 and remove, then make rack 16 drive deburring sword 14 to die core 13 through connecting block 15 of one side, then make deburring sword 14 extrude the surface of die core 13, realize that die cavity piece 11 is at opening the automatic die core 13 surface of deburring sword 14 carries out annular, be favorable to improving the shaping accuracy and the beautiful precision of plastic case.

The working principle of the utility model is as follows: when the plastic injection molding machine works, the moving block 9 is driven to move through the telescopic push rod 8, the moving block 9 drives the die holder 10 to be attached to one side of the die core 13, the die cavity block 11 is correspondingly closed in the die core 13, simultaneously, under the action of the tooth grooves 12 formed on the two sides of the die cavity block 11, the tooth grooves 12 are meshed with the gears 18, when the die cavity block 11 moves to one side of the gears 18, the gears 18 synchronously rotate, under the action of the meshing connection rack 16 on the other side of the rack 16, the rack 16 drives the trimming knife 14 to move to one side of the die cavity block 11 through the connecting block 15, the closing interference of the die core 13 and the die cavity block 11 by the trimming knife 14 is avoided, the plastic box is convenient to be precisely molded, after the die cavity block 11 corresponds to the die core 13, the plastic raw material is added into the die cavity block 11, and the plastic raw material is fed to the injection molding opening 4 through the injection molding cylinder 3, then the raw materials enter the die cavity block 11 and the die core 13 through the fixing plate 5 for injection molding, after the plastic box is molded in the die cavity block 11 and the die core 13, the moving block 9 is driven to move through the telescopic push rod 8, then the die cavity block 11 is opened on one side of the die core 13, and when the die cavity block 11 moves to one side far away from the die core 13 through the tooth slot 12 meshed with the outer wall of the gear 18, the connecting block 15 drives the trimming knife 14 to move to the surface of the die core 13 through the rack 16, then the trimming knife 14 is used for laminating and extruding the surface of the die core 13, under the annular action of the trimming knife 14, the die cavity block 11 is used for synchronously trimming the plastic box when one side of the die core 13 is opened, the molding quality of the plastic box is ensured, and thus the working principle of the plastic box injection molding device is completed.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims (6)

1. The plastic box injection molding device comprises a frame (1) and a feeding cylinder (2) fixedly arranged above the frame (1), and is characterized in that the bottom end of the feeding cylinder (2) is fixedly connected with an injection cylinder (3), the outlet end of the injection cylinder (3) is fixedly connected with an injection port (4), the other side of the injection port (4) is fixedly provided with a fixing plate (5), the fixing plate (5) is fixedly arranged on the surface of the frame (1), one side of the fixing plate (5) is fixedly connected with a plurality of guide posts (6), the other end of the guide posts (6) is fixedly provided with a fixing seat (7), and the fixing seat (7) is fixedly connected on the surface of the frame (1);

The surface of the fixed seat (7) is fixedly provided with a telescopic push rod (8), the output end of the telescopic push rod (8) is fixedly connected with a moving block (9), the moving block (9) is slidably connected to the outer wall of the guide post (6), one side, far away from the telescopic push rod (8), of the moving block (9) is fixedly connected with a die holder (10), and the surface of the die holder (10) is fixedly provided with a die cavity block (11);

The outer wall of the fixed plate (5) is fixedly connected with a mold core (13), the mold core (13) is arranged corresponding to the mold cavity block (11), the outer side wall of the mold core (13) is connected with a trimming cutter (14) in a fitting manner, the outer wall of the trimming cutter (14) is fixedly provided with a connecting block (15), and the outer wall of the connecting block (15) is connected with a guide plate (17) in a sliding manner;

The two sides of the connecting block (15) are fixedly provided with racks (16), the outer walls of the racks (16) are connected with gears (18) in a meshed mode, and the gears (18) are connected below the guide plates (17) in a rotating mode.

2. The injection molding device for the plastic box according to claim 1, wherein tooth grooves (12) which are in meshed connection with the outer wall of the gear (18) are formed in two sides of the mold cavity block (11), and the tooth grooves (12) and the racks (16) are symmetrically arranged on two sides of the gear (18).

3. The injection molding device for the plastic box, as set forth in claim 1, characterized in that the two ends of the guide plate (17) are fixedly connected with the fixed plate (5) and the fixed seat (7) respectively, a groove capable of accommodating the sliding of the connecting block (15) is formed in the surface of the guide plate (17), and the outer wall of the guide plate (17) is connected with the moving block (9) in a sliding manner.

4. A plastic box injection molding apparatus according to claim 3, wherein the connecting block (15) is symmetrically disposed about a central axis of the trimming blade (14), and the trimming blade (14) is disposed in a ring-shaped configuration.

5. An injection molding device for plastic boxes according to claim 2, characterized in that the outer wall of the gear (18) is rotatably connected with a side plate (19), and the side plate (19) is fixedly connected with the outer wall of the guide plate (17).

6. The injection molding device for the plastic box, as set forth in claim 1, characterized in that a discharge port (20) is arranged below the mold core (13), and the discharge port (20) is arranged on the surface of the frame (1).