Plastic mold capable of preventing impurities from falling into mold

Abstract

The utility model relates to the technical field of plastic molds, in particular to a plastic mold capable of preventing impurities from falling into, which comprises a mold frame and a mold seat fixed at the upper end in the mold frame. An injection molding channel is formed in the middle of the upper end of the mold base, an injection molding cavity with a downward opening is formed in the lower end of the mold base, a material receiving concave box is arranged at the lower end in the mold frame, and a mold cover covering the injection molding cavity is arranged between the material receiving concave box and the mold base. The power end of the electric cylinder is connected with a supporting plate, a supporting shaft is fixed to the lower right end of the die cover, the lower end of the supporting shaft is rotationally connected to the upper end of the supporting plate, and a rotary braking assembly is arranged at the upper end of the supporting plate; an air pump is fixed to the right end of the supporting shaft. An air outlet of the air pump communicates with an air blowing pipe. The injection molding cavity is designed to have the downward opening, so that impurities are prevented from falling into the injection molding cavity from top to bottom, the impurities are prevented from influencing the injection molding quality of a plastic finished product, and demolding is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic moulds, in particular to a plastic mould which can prevent impurities from falling into it. Background Art

[0002] Plastic molds are tools used in the plastic processing industry to match plastic molding machines and give plastic products a complete configuration and precise size. Due to the wide variety of plastics and processing methods, and the varying complexity of the structures of plastic molding machines and plastic products, there are also a variety of types and structures of plastic molds.

[0003] For example, Chinese patent authorization announcement No. CN220390053U discloses an anti-deviating plastic mold, including a base, a lower mold, a top block, an upper mold and a molding cavity, wherein the lower mold is arranged at the top of the base, the molding cavity is arranged at the top of the lower mold, the top block is arranged at the top of the lower mold, and the upper mold is arranged at the bottom of the top block. An ejection assembly is arranged at the connection between the lower mold and the base, and the ejection assembly includes an ejection plate, a support column, a sliding groove, and a receiving groove; through the designed ejection plate, support column, sliding groove, rotating rod and other structures, the cylinder can push the support column and the ejection plate, so that the ejection plate ejects the product inside the molding cavity, thereby reducing the difficulty of removing the product for the staff and improving the removal efficiency; through the designed metal block, guide hole, and guide rod, the stability of the upper mold when moving up and down can be improved, and the upper mold can be prevented from being offset by the impact of external force during the up and down movement.

[0004] The defect of the prior art is that the injection cavity of the existing plastic mold is generally opened upward, which makes demolding inconvenient. In addition, impurities are easily dropped into the injection cavity with an upward opening, and it is difficult to clean the injection cavity after the impurities enter the cavity. Impurities left in the injection cavity may even cause dents in the finished plastic product during injection molding, thereby affecting the quality of the injection molding of the finished plastic product. Utility Model Content

[0005] The utility model provides a plastic mold which can prevent impurities from falling in, is conducive to convenient demoulding, and is conducive to preventing impurities from entering into an injection molding cavity.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A plastic mold for preventing impurities from falling in, comprising a mold frame and a mold base, wherein the mold base is fixed to the upper end of the mold frame;

[0008] An injection channel is provided in the middle of the upper end of the mold base, and an injection cavity with an opening facing downward is provided at the lower end of the mold base. A material receiving concave box is provided at the lower end of the mold frame, and a mold cover covering the injection cavity is provided between the material receiving concave box and the mold base;

[0009] An electric cylinder is provided on the right side of the material receiving concave box. The power end of the electric cylinder is connected to a support plate. A support shaft is fixed to the lower right end of the mold cover, and the lower end of the support shaft is rotatably connected to the upper end of the support plate. A rotation braking component is provided on the upper end of the support plate;

[0010] A gas pump is fixed to the right end of the support shaft. The air outlet of the gas pump is communicated with a blow pipe. The upper end of the blow pipe is communicated with a plurality of air blowing nozzles, and a rotation driving component is provided above the blow pipe.

[0011] Further, elastic buffer pads are connected to the inner walls of the material receiving concave box.

[0012] Further, the rotation braking component includes a positive and negative motor, a PLC controller, a main gear and a sub-gear. The positive and negative motor is fixed to the upper end of the support plate, and the PLC controller is installed outside the positive and negative motor.

[0013] Further, the main gear is connected to the power end of the positive and negative motor, the sub-gear is fixedly sleeved on the periphery of the support shaft, and the sub-gear meshes with the main gear.

[0014] Further, the rotation driving component includes a driving motor, a driving gear and a plurality of driven gears. The driving motor is fixed to the upper end of the blow pipe, and the driving gear is connected to the power end of the driving motor.

[0015] Further, a plurality of the driven gears are fixedly sleeved on the peripheries of a plurality of air blowing nozzles respectively. The driving gear meshes with the adjacent driven gear, and adjacent two driven gears mesh with each other. The air blowing nozzles are all rotatably connected to the blow pipe.

[0016] The beneficial effects of the present utility model:

[0017] 1. By designing the injection cavity to be open downward, it is beneficial to prevent impurities from falling into the injection cavity from top to bottom, so as to avoid the influence of impurities on the quality of plastic product injection molding. Moreover, after the plastic product in the injection cavity is injection molded, through the operation of the rotation braking component, the mold cover is driven to move away from below the injection cavity. And after the mold cover no longer covers the injection cavity, the plastic product in the injection cavity will automatically fall into the material receiving concave box, thus achieving the effect of convenient demolding;

[0018] 2. By moving the air blowing nozzles to below the injection cavity, even if there are impurities remaining inside the injection cavity, by aligning a plurality of rotating air blowing nozzles with the inside of the injection cavity for air blowing, it is beneficial to conveniently clean the impurities remaining inside the injection cavity, achieving the effect of convenient cleaning of the inside of the injection cavity, thereby better ensuring the quality of plastic product injection molding. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 Schematic diagram of the support plate structure of the present utility model;

[0021] Figure 3 Schematic diagram of the overall demoulding working structure of the present utility model;

[0022] Figure 4 Schematic diagram of the overall cleaning working structure of the present utility model.

[0023] Description of reference numerals:

[0024] Mould base 1, mould seat 2, mould cover 3, electric cylinder 4, support plate 5, support shaft 6, air pump 7, blow pipe 8, air blowing nozzle 9, positive and negative motor 10, main gear 11, auxiliary gear 12, PLC controller 13, drive motor 14, drive gear 15, driven gear 16, material receiving concave box 17, elastic buffer pad 18, injection cavity 19, injection channel 20. Detailed implementation manners

[0025] For the convenience of understanding by those skilled in the art, the present utility model will be further described below in conjunction with embodiments and the accompanying drawings. The content mentioned in the implementation manners does not limit the present utility model.

[0026] As Figures 1-3 shown, in this embodiment, it includes a mould base 1 and a mould seat 2. The mould seat 2 is fixed to the upper end inside the mould base 1. An injection channel 20 is opened in the middle of the upper end of the mould seat 2, and an injection cavity 19 with an opening facing downwards is opened at the lower end of the mould seat 2. A material receiving concave box 17 is provided at the lower end inside the mould base 1. A mould cover 3 covering the injection cavity 19 is provided between the material receiving concave box 17 and the mould seat 2. A rotation braking assembly is provided at the upper end of the support plate 5. The rotation braking assembly includes a positive and negative motor 10, a PLC controller 13, a main gear 11 and an auxiliary gear 12. The positive and negative motor 10 is fixed to the upper end of the support plate 5. The PLC controller 13 is installed outside the positive and negative motor 10. The main gear 11 is connected to the power end of the positive and negative motor 10. The auxiliary gear 12 is fixedly sleeved around the support shaft 6, and the auxiliary gear 12 meshes with the main gear 11.

[0027] By designing the injection cavity 19 with an opening facing downwards, it is beneficial to prevent impurities from falling into the injection cavity 19 from top to bottom, so as to avoid the influence of impurities on the quality of the plastic product injection molding. Moreover, after the plastic product in the injection cavity 19 is injection molded, first, the contraction of the electric cylinder 4 drives the support plate 5, the support shaft 6 and the mould cover 3 to move down a small distance. On the premise that the PLC controller 13 is set to be electrically connected to the positive and negative motor 10, the PLC controller 13 controls the positive and negative motor 10 to work. At this time, the positive and negative motor 10 drives the main gear 11, the auxiliary gear 12 and the support shaft 6 to rotate 90 degrees and stop (as Figure 3As shown in the figure, the mold cover 3 is moved away from below the injection cavity 19. Since the mold cover 3 no longer covers the injection cavity 19, the plastic product in the injection cavity 19 will automatically fall into the material receiving concave box 17, thus achieving the effect of convenient demolding.

[0028] As Figure 3 shown, in this embodiment, elastic buffer pads 18 are connected to the inner walls of the material receiving concave box 17.

[0029] By arranging the elastic buffer pads 18 in the material receiving concave box 17, when the plastic product falls into the material receiving concave box 17, the elastic buffer pads 18 can elastically buffer the falling plastic product to prevent the plastic product from being damaged when it falls.

[0030] As Figure 2 、 4 shown, in this embodiment, an electric cylinder 4 is provided on the right side of the material receiving concave box 17. The power end of the electric cylinder 4 is connected to a support plate 5. A support shaft 6 is fixed to the lower right end of the mold cover 3. The lower end of the support shaft 6 is rotatably connected to the upper end of the support plate 5. An air pump 7 is fixed to the right end of the support shaft 6. The air outlet of the air pump 7 is communicated with a blow pipe 8. The upper end of the blow pipe 8 is communicated with a plurality of air blowing nozzles 9. And a rotation driving assembly is provided above the blow pipe 8. The rotation driving assembly includes a driving motor 14, a driving gear 15 and a plurality of driven gears 16. The driving motor 14 is fixed to the upper end of the blow pipe 8. The driving gear 15 is connected to the power end of the driving motor 14. A plurality of the driven gears 16 are fixedly sleeved around a plurality of the air blowing nozzles 9 one by one. The driving gear 15 meshes with the adjacent driven gears 16, and adjacent two driven gears 16 mesh with each other. The air blowing nozzles 9 are all rotatably connected to the blow pipe 8.

[0031] After the plastic product is demolded, the positive and negative motor 10 works to drive the main gear 11, the sub-gear 12 and the support shaft 6 to rotate until the air blowing nozzles 9 are moved below the injection cavity 19. Even if there are impurities left in the injection cavity 19, then the driving motor 14 works to drive the driving gear 15, the driven gears 16 and the air blowing nozzles 9 to rotate. On the premise of starting the air blowing pump 7, so the plurality of rotating air blowing nozzles 9 are aligned with the inside of the injection cavity 19 to blow air, which is beneficial to conveniently clean the impurities left in the injection cavity 19, achieving the effect of conveniently cleaning the inside of the injection cavity 19, and thus better ensuring the quality of the plastic product injection molding.

[0032] All the technical features in this embodiment can be freely combined according to actual needs.

[0033] The above embodiment is a preferred implementation scheme of the present invention. In addition, there are other implementation methods. Any obvious replacement without departing from the concept of the technical solution is within the protection scope of the present invention.

Claims

1. A plastic mold for preventing impurities from falling in, comprising a mold base (1) and a mold seat (2), wherein the mold seat (2) is fixed to the upper end inside the mold base (1), and is characterized in that: An injection channel (20) is formed in the middle of the upper end of the mold seat (2), and an injection cavity (19) with an opening facing downward is formed in the lower end of the mold seat (2). A material receiving concave box (17) is arranged at the lower end inside the mold base (1), and a mold cover (3) covering the injection cavity (19) is arranged between the material receiving concave box (17) and the mold seat (2); An electric cylinder (4) is arranged on the right side of the material receiving concave box (17). A support plate (5) is connected to the power end of the electric cylinder (4). A support shaft (6) is fixed to the lower right end of the mold cover (3), and the lower end of the support shaft (6) is rotatably connected to the upper end of the support plate (5). A rotation braking component is arranged on the upper end of the support plate (5); An air pump (7) is fixed to the right end of the support shaft (6). The air outlet of the air pump (7) is communicated with an air blowing pipe (8). The upper end of the air blowing pipe (8) is communicated with a plurality of air blowing nozzles (9), and a rotation driving component is arranged above the air blowing pipe (8).

2. The plastic mold for preventing impurities from falling in according to claim 1, characterized in that: Elastic buffer pads (18) are connected to the inner walls of the material receiving concave box (17).

3. The plastic mold for preventing impurities from falling in according to claim 1, characterized in that: The rotation braking component includes a forward and reverse motor (10), a PLC controller (13), a main gear (11) and a sub-gear (12). The forward and reverse motor (10) is fixed to the upper end of the support plate (5), and the PLC controller (13) is installed outside the forward and reverse motor (10).

4. The plastic mold for preventing impurities from falling in according to claim 3, wherein: The main gear (11) is connected to the power end of the forward and reverse motor (10). The sub-gear (12) is fixedly sleeved on the periphery of the support shaft (6), and the sub-gear (12) meshes with the main gear (11).

5. The plastic mold for preventing impurities from falling in according to claim 1, characterized in that: The rotation driving component includes a driving motor (14), a driving gear (15) and a plurality of driven gears (16). The driving motor (14) is fixed to the upper end of the air blowing pipe (8), and the driving gear (15) is connected to the power end of the driving motor (14).

6. The plastic mold for preventing impurities from falling in according to claim 5, characterized in that: A plurality of the driven gears (16) are fixedly sleeved on the peripheries of a plurality of air blowing nozzles (9) respectively. The driving gear (15) meshes with an adjacent driven gear (16), and adjacent two driven gears (16) mesh with each other. The air blowing nozzles (9) are all rotatably connected to the air blowing pipe (8).

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