Plastic cover forming mold

Abstract

The present invention belongs to the technical field of plastic molding, and specifically relates to a plastic cover molding mold, comprising a base, a driving box is provided on the upper side of the base, a molding box is provided on the right side of the driving box, a molding cavity is provided in the molding box, a fixed film is provided on the right side of the molding cavity, a movable mold connected with the driving box is provided on the left side of the molding cavity, an extrusion mechanism connected with the fixed film is provided on the right side of the base, a material receiving trough connected with the molding cavity is provided at the bottom of the base, a blanking frame with an upper end extending into the molding cavity is provided on the inner wall of the material receiving trough, a blanking hole is provided inside the blanking frame, an air jet mechanism spraying upward is provided at the bottom of the blanking hole, a plurality of transverse grooves connected with the blanking holes are provided from top to bottom of the blanking frame, a plurality of transverse grooves are slidably equipped with slide plates, a plurality of slide plates are provided on one side, a plurality of slide plates are provided with drop holes on the side away from the air permeable plate, a plurality of slide plates are commonly equipped with a rebound mechanism connected with the blanking frame on the left side, a plurality of slide plates are commonly connected with a connecting piece on the right side, and a linkage mechanism connecting the connecting piece and the movable mold.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic molding, and in particular relates to a plastic cover molding die. Background Art

[0002] Injection mold is a special tool used in the plastic injection molding process. It injects heated molten plastic into the mold cavity and cools and hardens under a certain time and pressure to obtain plastic products of the desired shape. Injection molds are widely used to produce various plastic parts and products, especially suitable for mass production of products with complex geometric shapes and high precision requirements, such as automotive parts, electronic housings, home appliances, cosmetic containers, toys, etc. It has the advantages of high production efficiency, low cost, high product precision, stable performance and wide application range. It is a vital tool in the modern plastic processing industry;

[0003] Nowadays, when some cosmetic bottle caps are injection molded, after the movable mold and the fixed film are buckled, the extruder mechanism supplies high-temperature plastic solution into the molding cavity between the movable mold and the fixed film. When the temperature of the high-temperature plastic solution drops, it will be molded. When the movable mold and the fixed film are separated, the plastic parts fall out of the molding cavity. However, in order to ensure the molding efficiency, the cooling time of the plastic parts in the molding cavity will not be too long. Therefore, when the plastic parts fall, their own temperature is still high, resulting in a softer material. When the plastic parts fall, they are easily deformed due to falling from a high place. Summary of the invention

[0004] The purpose of the present invention is to provide a plastic cover forming mold to solve the problems existing in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A plastic cover forming mold comprises a base, a driving box is provided on the upper side of the base, a forming box is provided on the right side of the driving box, a forming cavity is provided in the forming box, a fixed film is provided on the right side of the forming cavity, a movable mold connected with the driving box is provided on the left side of the forming cavity, an extrusion mechanism connected with the fixed film is provided on the right side of the base, a receiving trough connected with the forming cavity is provided at the bottom of the base, a blanking frame with an upper end extending into the forming cavity is provided on the inner wall of the receiving trough, a blanking hole is provided inside the blanking frame, an air jet mechanism spraying upward is provided at the bottom of the blanking hole, a plurality of transverse grooves connected with the blanking holes are provided from top to bottom of the blanking frame, a plurality of transverse grooves are slidably equipped with slides, a plurality of slides are provided with air permeable plates on one side, a plurality of slides are provided with drop holes on the side away from the air permeable plates, a plurality of slides are commonly equipped with a rebound mechanism connected with the blanking frame on the left side, a plurality of slides are commonly connected with a connecting piece on the right side, and a linkage mechanism connecting the connecting piece and the movable mold.

[0007] The linkage mechanism includes a stepped hole arranged on the front and rear sides of the connecting piece, a first spring is installed in each of the two stepped holes, a slider is arranged on the upper side of the two first springs, the two sliders are provided with a sliding rod extending out of the stepped hole, a stopper is arranged on the upper side of the two sliding rods, the two stops are provided with a first inclined surface facing the movable mold, a pressure block matching the position of the stopper is arranged on the front and rear sides of the movable mold, the pressure block is provided with a second inclined surface matching the first inclined surface, and an unlocking component matching the stopper is arranged on the left side of the molding cavity.

[0008] The unlocking assembly includes mounting plates arranged on the front and rear sides of the molding cavity. The lower sides of the two mounting plates are provided with magnet blocks matching the positions of the stop blocks. The two stop blocks are both magnetic, and the magnets of the magnet blocks and the stop blocks repel each other.

[0009] The rebound mechanism comprises a connecting strip, the connecting strip is connected to a plurality of slide plates, the connecting strip is provided with a plurality of telescopic rods connected to the blanking frame from top to bottom, and a second spring is sleeved on the outer sides of the plurality of telescopic rods.

[0010] A material receiving cover surrounding the material blanking hole is arranged on the upper side of the material blanking frame.

[0011] The jet mechanism includes an inner cavity arranged at the lower side of the blanking frame, a plurality of nozzles connected to the inner cavity are arranged on the inner wall of the lower side of the blanking hole, the inner cavity is connected to an air supply pipe, and an air supply pump connected to the air supply pipe is arranged on the side of the base.

[0012] The four corners of the fixed film facing the movable mold are all provided with positioning rods, and the four corners of the movable mold are all provided with positioning holes matching with the positioning rods.

[0013] An inclined plate is provided at the lower side of the material receiving trough.

[0014] Compared with the prior art, the present invention has the following technical advantages:

[0015] The opening and closing of the movable mold and the fixed mold are controlled by the driving mechanism in the driving box, and the extrusion mechanism is used to achieve rapid molding of the plastic cover. At the same time, the design of the linkage mechanism enables the movement of the skateboard system to be automatically triggered every time a new plastic cover is formed, preparing for the falling and heat dissipation of the next plastic cover, thus achieving a high degree of automation.

[0016] By setting up multi-layer slide plates and air-permeable plates in the blanking frame and equipping with an air jet mechanism, the drop height of the plastic cap from molding to collection is effectively reduced, reducing damage caused by impact. At the same time, the air jet mechanism can also dissipate heat for the plastic cap to prevent deformation or damage due to high temperature.

[0017] The jet mechanism evenly dissipates heat from the plastic caps in the drop hole through the inner cavity and multiple nozzles, thereby improving the heat dissipation efficiency. The design of the collecting cover ensures that the plastic caps can fall into the drop hole in a concentrated manner, which is convenient for subsequent collection and processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further illustrated by means of the non-limiting examples given in the accompanying drawings.

[0019] Figure 1 The structure of the present invention is schematically shown Figure 1 ;

[0020] Figure 2 The structure of the present invention is schematically shown Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the present invention;

[0022] Figure 4 for Figure 3 A schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 5 It is a schematic diagram of the local structure of the present invention Figure 1 ;

[0024] Figure 6 It is a schematic diagram of the local structure of the present invention Figure 2 ;

[0025] Figure 7 It is a schematic diagram of the local structure of the present invention Figure 3 .

[0026] The main component symbols are described as follows:

[0027] Base 1, drive box 11, molding box 12, molding cavity 13, fixed film 14, movable mold 15, extrusion mechanism 16, material receiving trough 2, blanking frame 22, blanking hole 23, transverse groove 24, slide plate 25, air permeable plate 26, drop hole 27, connecting piece 28, step hole 3, first spring 31, slider 32, slide rod 33, stopper 34, first inclined surface 35, pressure block 36, second inclined surface 37, mounting plate 4, magnet block 41, connecting strip 42, telescopic rod 43, second spring 44, material receiving cover 45, inner cavity 46, nozzle 47, air supply pipe 48, air supply pump 49, positioning rod 5, inclined plate 52. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] like Figure 1-7As shown, a plastic cover forming mold of the present invention comprises a base 1, a driving box 11 is provided on the upper side of the base 1, a forming box 12 is provided on the right side of the driving box 11, a forming cavity 13 is provided in the forming box 12, a fixed film 14 is provided on the right side of the forming cavity 13, a movable mold 15 connected to the driving box 11 is provided on the left side of the forming cavity 13, an extrusion mechanism 16 connected to the fixed film 14 is provided on the right side of the base 1, a receiving trough 2 connected to the forming cavity 13 is provided at the bottom of the base 1, a blanking frame 22 whose upper end extends into the forming cavity 13 is provided on the inner wall of the receiving trough 2, and the blanking frame 22 is provided inside A blanking hole 23 is provided, and an air jet mechanism for spraying upward is provided at the bottom of the blanking hole 23. The blanking frame 22 is provided with a plurality of transverse grooves 24 connected with the blanking hole 23 from top to bottom. Slide plates 25 are slidably installed in the plurality of transverse grooves 24. A ventilation plate 26 is provided on one side of the plurality of slide plates 25. A drop hole 27 is provided on the side of the plurality of slide plates 25 away from the ventilation plate 26. A rebound mechanism connected to the blanking frame 22 is commonly installed on the left side of the plurality of slide plates 25. A connecting piece 28 is commonly connected on the right side of the plurality of slide plates 25. The connecting piece 28 is connected to a linkage mechanism of the movable mold 15.

[0030] When plastic molding is performed, the movable mold 15 moves toward the fixed film 14 under the action of the driving mechanism in the driving box 11. When the movable mold 15 and the fixed film 14 are securely buckled, the extrusion mechanism 16 starts to work, squeezing the high-temperature plastic solution into between the movable mold 15 and the fixed film 14. When the high-temperature plastic solution is reduced to the molding temperature, the plastic solution is molded into a plastic part. At this time, the movable mold 15 moves away from the fixed film 14. After the movable mold 15 is separated from the fixed film 14, the plastic part falls downward;

[0031] When the molded plastic parts fall into the receiving trough 2, they fall into the blanking holes 22 in the blanking frame 22. At this time, the plastic parts fall downwards into the uppermost slide plate 25. At this time, the jet mechanism sprays upwards from the lower side of the blanking holes 22. Such a design can dissipate heat for the plastic parts in the blanking holes 22. The design of falling on the upper side of the slide plate 25 can reduce the height of the plastic parts falling downwards, protect the plastic parts, and also dissipate heat for the plastic parts by blowing air.

[0032] When the movable mold 15 and the fixed film 14 are buckled again to form the plastic parts, the movable mold 15 is separated from the fixed film 14, and the newly formed plastic parts fall downwards. At the same time, the movable mold 15 drives the connecting member 28 to move quickly to the left through the linkage mechanism, and the rebound mechanism begins to compress. The connecting member 28 drives several slide plates 32 to move to the left at the same time until the drop hole 27 matches the position of the blanking hole 23. At this time, the plastic parts on the upper surface of the uppermost slide plate 25 fall downwards through the blanking hole 23, and then the linkage mechanism cancels the pulling of the connecting member 28, and the rebound assembly drives several slide plates 32 to reset to the right, so that the newly formed plastic parts are located on the upper surface of the uppermost slide plate 32 again, and the previously formed plastic parts fall on the upper surface of the next slide plate 32, until the air permeable plate 26 matches the position of the blanking hole 23, and the jet mechanism continues to spray gas upwards from the lower end of the blanking hole 23 to dissipate heat to all the plastic parts in the blanking hole 23 at the same time;

[0033] Similarly, when each newly molded plastic part falls, all the plastic parts in the blanking frame 22 pass through all the slides 25 from top to bottom in turn, so each plastic part gradually falls downward from several slides 25 in turn, until the plastic part falls downward from the upper surface of the last slide 25, until it moves out of the blanking hole 23. With this design, each molded plastic part will pass through all the slides 25 from top to bottom, so that the plastic parts can gradually fall downward, reducing the height of the plastic parts falling, and protecting the plastic parts. When the plastic parts gradually fall downward in the blanking hole 23, all the plastic parts in the blanking hole 23 can be blown to dissipate heat, thereby reducing the temperature of the plastic parts and further improving the protection effect of the plastic parts.

[0034] The linkage mechanism includes a step hole 3 arranged on the front and rear sides of the connecting member 28, and the first springs 31 are assembled in the two step holes 3. Slide blocks 32 are arranged on the upper sides of the two first springs 31, and the two slide blocks 32 are provided with slide rods 33 extending out of the step holes 3. Stoppers 34 are arranged on the upper sides of the two slide rods 33. The two stoppers 34 are provided with first inclined surfaces 35 on the side facing the movable mold 15. The front and rear sides of the movable mold 15 are provided with pressure blocks 36 matching the position of the stoppers 34, and the pressure blocks 36 are provided with second inclined surfaces 37 matching the first inclined surfaces 35. An unlocking component matching the stoppers 34 is provided on the left side of the molding cavity 13.

[0035] When the movable mold 15 moves toward the fixed film 14, after the pressing block 36 contacts the stopper 34, the second inclined surface 37 contacts the first inclined surface 35. When the pressing block 36 continues to move in the movable mold 15, due to the inclined guidance of the second inclined surface 37 and the first inclined surface 35, the stopper 34 can be driven to move downward. The stopper 34 drives the slider 32 to move downward in the step hole 3 through the slide rod 33, and the first spring 31 begins to compress. When the pressing block 36 moves to the right past the stopper 34, the slider 32 is driven in the step hole 3 under the action of the extension of the first spring 31. 3 moves upward to reset, the slider 32 drives the stopper 34 to move upward through the slider 33. When the movable mold 15 wants to move left to reset, it drives the pressure block 36 to move left to reset, until the pressure block 36 contacts the stopper 34, and then drives the stopper 34 to move left, and the stopper 34 drives the connecting member 28 and the plurality of slides 25 to move left. When the stopper 34 moves left to the unlocking assembly position, the stopper 34 automatically moves downward, driving the first spring 31 to compress, and at this time, under the action of the rebound mechanism, drives the plurality of slides 25 and the connecting member 28 to move right to reset.

[0036] The unlocking assembly includes mounting plates 4 arranged at the front and rear sides of the molding cavity 13. The lower sides of the two mounting plates 4 are provided with magnet blocks 41 that match the positions of the stop blocks 34. The two stop blocks 34 are both magnetic, and the magnet blocks 41 and the stop blocks 34 repel each other.

[0037] When the pressing block 36 drives the stopper 34 to move to the lower side of the magnet block 41 , the magnet block 41 pushes the stopper 34 to move downward and separate from the pressing block 36 due to the magnetic repulsion between the magnet block 41 and the stopper 34 .

[0038] The rebound mechanism includes a connecting strip 42 connected to the plurality of slide plates 25 . The connecting strip 42 is provided with a plurality of telescopic rods 43 connected to the blanking frame 22 from top to bottom. Second springs 44 are sleeved on the outer sides of the plurality of telescopic rods 43 .

[0039] When the plurality of slide plates 25 move to the left at the same time, the connecting bar 42 moves to the left, thereby causing the second spring 44 and the telescopic rod 43 to start to compress, and under the action of the extension of the second spring 44, the connecting bar 42 moves to the right to reset, thereby causing the plurality of slide plates 25 to move to the right to reset at the same time.

[0040] The upper side of the blanking frame 22 is provided with a collecting cover 45 surrounding the blanking hole 23. The design of the collecting cover 45 can collect the plastic parts falling downward in a large area and can concentrate them in the blanking hole 23.

[0041] The jet mechanism includes an inner cavity 46 arranged on the lower side of the blanking frame 22, and a plurality of nozzles 47 connected to the inner cavity 46 are arranged on the inner wall of the lower side of the blanking hole 23. The inner cavity 46 is connected to an air supply pipe 48, and an air supply pump 49 connected to the air supply pipe 48 is arranged on the side of the base 1.

[0042] When the air supply pump 49 continues to work, the gas is rushed into the inner cavity 46 through the air supply pipe 48, and then sprayed into the blanking hole 23 through a plurality of nozzles 47 to dissipate heat for a plurality of plastic parts in the blanking hole 23.

[0043] The four corners of the fixed film 14 facing the movable mold 15 are all provided with positioning rods 5, and the four corners of the movable mold 15 are all provided with positioning holes matching the positioning rods 5. The design of the positioning rods 5 and the positioning holes can improve the buckling accuracy between the movable mold 15 and the fixed film 14.

[0044] An inclined plate 52 is provided at the lower side of the receiving trough 21. The design of the inclined plate 52 can guide the plastic parts falling from the drop hole 23 and guide them out of the receiving trough 2.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A plastic cover forming mold, comprising a base, a driving box is provided on the upper side of the base, a forming box is provided on the right side of the driving box, a forming cavity is provided in the forming box, a fixed film is provided on the right side of the forming cavity, a movable mold connected to the driving box is provided on the left side of the forming cavity, and an extrusion mechanism connected to the fixed film is provided on the right side of the base, characterized in that: A receiving trough connected to the molding cavity is provided at the bottom of the base, a blanking frame with an upper end extending into the molding cavity is provided on the inner wall of the receiving trough, a blanking hole is provided inside the blanking frame, an air jet mechanism for spraying upward is provided at the bottom of the blanking hole, a plurality of transverse grooves connected to the blanking holes are provided from top to bottom on the blanking frame, a plurality of slides are slidably mounted in the transverse grooves, a plurality of slides are provided with air permeable plates on one side, a plurality of slides are provided with drop holes on the side away from the air permeable plates, a plurality of slides are commonly provided with a rebound mechanism connected to the blanking frame on the left side, a plurality of slides are commonly connected with a connecting piece on the right side, a linkage mechanism connecting the connecting piece to the movable mold, and the linkage mechanism includes steps arranged on the front and rear sides of the connecting piece The two step holes are equipped with a first spring, the two first springs are provided with a slider on the upper side, the two sliders are provided with a sliding rod extending out of the step hole, the two sliding rods are provided with a block on the upper side, the two blocks are provided with a first inclined surface facing the movable mold, the front and rear sides of the movable mold are provided with a pressure block matching the position of the block, the pressure block is provided with a second inclined surface matching the first inclined surface, an unlocking component matching the block is provided on the left side of the molding cavity, and the unlocking component includes a mounting plate provided on the front and rear sides of the molding cavity, and a magnet block matching the position of the block is provided on the lower side of the two mounting plates, and the two blocks are magnetic, and the magnetism of the magnet block and the block repel each other.

2. A plastic cover forming mold according to claim 1, characterized in that: The rebound mechanism comprises a connecting strip, the connecting strip is connected to a plurality of slide plates, the connecting strip is provided with a plurality of telescopic rods connected to the blanking frame from top to bottom, and a second spring is sleeved on the outer sides of the plurality of telescopic rods.

3. The plastic cover forming mold according to claim 1, characterized in that: A material receiving cover surrounding the material blanking hole is arranged on the upper side of the material blanking frame.

4. The plastic cover forming mold according to claim 1, characterized in that: The jet mechanism includes an inner cavity arranged at the lower side of the blanking frame, a plurality of nozzles connected to the inner cavity are arranged on the inner wall of the lower side of the blanking hole, the inner cavity is connected to an air supply pipe, and an air supply pump connected to the air supply pipe is arranged on the side of the base.

5. The plastic cover forming mold according to claim 1, characterized in that: The four corners of the fixed film facing the movable mold are all provided with positioning rods, and the four corners of the movable mold are all provided with positioning holes matching with the positioning rods.

6. The plastic cover forming mold according to claim 1, characterized in that: An inclined plate is provided at the lower side of the material receiving trough.

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