Plastic cup processing device

Abstract

The utility model relates to the field of bridge floor height difference adjustment, in particular to a plastic cup processing device which comprises an inner cup mold and outer cup molds symmetrically buckled on the two sides of the inner cup mold, a main seat is fixed at the cup opening end of the inner cup mold, the two outer cup molds are rotationally connected with the two ends of the main seat through pin shafts, and when the inner cup mold is buckled by the two outer cup molds, the two outer cup molds are fixed on the main seat. An injection molding pipe is arranged on the main seat and is used for injecting plastic into the cup body mold cavity through the center position of the bottom end of the inner cup mold. The die stroke is reduced, and then the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of bridge deck elevation difference adjustment, and more specifically to a plastic cup processing device. Background Technology

[0002] In today's society, plastic cups are widely used in people's daily lives, such as disposable plastic cups in street beverage shops. During the processing of plastic cups, molten plastic raw materials are generally injected into a mold cavity to obtain the cup. The injection mold typically consists of two molds, an upper and a lower mold. The lower mold moves upwards to join the upper mold in forming the plastic cup. Then, the lower mold moves downwards with the plastic cup, first demolding the cup from the upper mold, and then the lower mold continues to move downwards, demolding the cup from the lower mold again. Because the cup is relatively tall, the mold's stroke must be greater than the cup's height to ensure proper separation, resulting in a long mold stroke and consequently low processing efficiency. Utility Model Content

[0003] This invention provides a plastic cup processing device that reduces the mold stroke and thus improves processing efficiency.

[0004] The technical solution adopted by this utility model to solve the above problems is as follows:

[0005] A plastic cup processing device includes an inner cup mold and outer cup molds symmetrically fastened to both sides of the inner cup mold. A main seat is fixed to the cup mouth end of the inner cup mold. The two outer cup molds are rotatably connected to both ends of the main seat through pins. When the two outer cup molds fasten the inner cup mold, they cooperate with the main seat to form a cup body mold cavity. The main seat is provided with an injection tube for injecting plastic into the cup body mold cavity through the center position of the bottom end of the inner cup mold.

[0006] Each outer cup mold has symmetrical end pins on both sides. A lifting frame slides through the injection tube. Two elongated holes are symmetrically provided on both sides of the lifting frame, and the four end pins slide in the four elongated holes respectively.

[0007] An electric telescopic rod is provided between the lifting frame and the main seat.

[0008] The inner cup mold and the main seat are provided with two straight holes in the inner axis.

[0009] There are sliding pillars in both straight holes. When the mold is closed, the end faces of the two sliding pillars are located inside the straight holes.

[0010] An installation seat is provided inside the straight hole near the bottom of the inner cup mold. A sliding rod frame slides on the installation seat. A plug is provided at the lower end of the sliding rod frame, and a spring is provided between the upper end of the sliding rod frame and the installation seat.

[0011] When the plug slides into the lower end of the straight hole under the elastic force of the spring and is pressed against the mounting seat, the lower end face of the plug and the lower end face of the inner cup mold are on the same plane.

[0012] The slide column is provided with an air hole, and a one-way valve is connected to the air hole.

[0013] The main seat is equipped with a heating device.

[0014] The inner cup mold is cylindrical or conical with a cup mouth diameter larger than the cup bottom diameter. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the plastic cup processing device during mold closing.

[0016] Figure 2 A schematic diagram of the structure of a plastic cup processing device during mold making;

[0017] Figure 3 A cross-sectional view of the plastic cup processing device during mold closing;

[0018] Figure 4 Schematic diagram of the cross-sectional structure of the plastic cup processing device during mold making.

[0019] Figure 5 A structural diagram of the main seat and inner cup mold;

[0020] Figure 6 This is a schematic diagram of the outer cup mold.

[0021] Figure 7 This is a structural diagram of the plug and slide bar bracket;

[0022] Figure 8 This is a structural diagram of the lifting frame, elongated hole, and sliding column.

[0023] In the picture:

[0024] Main seat 1; Inner cup mold 2; Injection tube 3; Straight hole 4; Mounting seat 5; Outer cup mold 6; Pin 7; End pin 8; Plug 9; Slide rod bracket 10; Spring 11; Lifting frame 12; Long hole 13; Slide column 14; Electric telescopic rod 15. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The following is combined Figure 1-2 5-6 provides a detailed description of Embodiment 1 of the plastic cup processing device:

[0027] A plastic cup processing device includes an inner cup mold 2 and outer cup molds 6 symmetrically fastened to both sides of the inner cup mold 2. A main seat 1 is fixed to the cup mouth end of the inner cup mold 2. The two outer cup molds 6 are rotatably connected to both ends of the main seat 1 through pins 7. When the two outer cup molds 6 fasten the inner cup mold 2, they cooperate with the main seat 1 to form a cup body mold cavity. The main seat 1 is provided with an injection tube 3 for injecting plastic into the cup body mold cavity through the center position of the bottom end of the inner cup mold 2.

[0028] During processing, the two outer cup molds 6 are controlled to rotate towards the inner cup mold 2 on the main seat 1 via pins 7 until the upper ends of the two outer cup molds 6 press against the lower end face of the main seat 1. At the same time, the two outer cup molds 6 align, locking the inner cup mold 2 between the two outer cup molds 6. At this point, the mold cavities inside the two outer cup molds 6 and the inner cup mold 2, together with the sealing at the end of the main seat 1, form a cup-shaped mold cavity. Then, molten plastic is injected into the cup cavity through the injection tube 3 via the bottom end of the inner cup mold 2 using an external injection molding machine until... Molten plastic fills the cup mold cavity. After the plastic in the cup mold cavity cools and solidifies, the two outer cup molds 6 are rotated to both sides at the same time, thereby separating the two outer cup molds 6. At this time, the formed plastic cup will still be fitted on the inner cup mold 2. When the width of the upper part of the inner cavity of the two outer cup molds 6 is sufficient for the edge of the plastic cup to pass through, the rotation of the two outer cup molds 6 can be stopped. Then, the plastic cup can be removed by pulling it down along the axis of the inner cup mold 2. Then, the two outer cup molds 6 are rotated back and snapped together again. Repeating the above steps can form a continuous injection molding process.

[0029] By rotating the two outer cup molds 6 outwards at a certain angle, the plastic cup is opened on the side, allowing the plastic cup to be removed. This replaces the conventional method of moving the mold along the axial direction of the plastic cup to separate and remove the plastic cup, reducing the mold stroke and thus improving processing efficiency.

[0030] In this embodiment, in order to ensure that the plastic cup can be quickly separated from the mold, the processing device of this application is set vertically, that is, the main seat 1 is on top, the inner cup mold 2 is below and the axis is set vertically, so that after the two outer cup molds 6 are opened, the formed plastic cup can automatically slide down and fall due to its own gravity.

[0031] Furthermore, in order to ensure that the plastic cup can automatically slide down and fall due to its own weight, the inner cup mold 2 is set as a cylinder or a conical cylinder with a cup mouth diameter larger than the cup bottom diameter, so as to ensure that the formed plastic cup can be detached from the inner cup mold 2.

[0032] Meanwhile, in order to ensure that the plastic remains in a molten state during the injection molding process, a heating device is installed in the main seat 1. This heating device can be a resistance wire; it heats the plastic as it passes through, ensuring that the plastic raw material remains in a molten state and then fills the cup mold cavity.

[0033] Further:

[0034] Each outer cup mold 6 has end pins 8 symmetrically welded and fixed on both sides. A lifting frame 12 slides through the injection tube 3. Two elongated holes 13 are symmetrically provided on both sides of the lifting frame 12. The four end pins 8 slide in the four elongated holes 13 respectively.

[0035] An electric telescopic rod 15 is provided between the lifting frame 12 and the main seat 1.

[0036] By controlling the retraction of the electric telescopic rod 15, the lifting frame 12 will descend, that is, move towards the main seat 1, thereby driving the four elongated holes 13 to descend, which will push the four end pins 8, causing the end pins 8 to drive the outer cup mold 6 to rotate outward around the pin shaft 7, forming two outer cup molds 6 opening simultaneously and symmetrically.

[0037] By controlling the extension of the electric telescopic rod 15, the lifting frame 12 will rise, that is, move away from the main seat 1, thereby driving the four elongated holes 13 to rise, which will push the four end pins 8, causing the end pins 8 to drive the outer cup mold 6 to rotate towards each other around the pin shaft 7, forming two outer cup molds 6 that are simultaneously and symmetrically close together until they are locked together, thus completing the mold closing.

[0038] Example 2:

[0039] Based on Embodiment 1, two straight holes 4 are provided axially inside the inner cup mold 2 and the main seat 1;

[0040] When the mold is opened, if the formed plastic cup remains stuck on the inner cup mold 2 and cannot fall off, or if this application is not installed vertically and the plastic cup cannot fall off automatically by its own weight, compressed gas is introduced into the two straight holes 4 through the setting of the two straight holes 4, and sprayed out from the lower port of the two straight holes 4, that is, the bottom of the cup of the inner cup mold 2, thereby blowing the plastic cup off the inner cup mold 2, improving the efficiency of the cup body detaching from the inner cup mold 2.

[0041] Based on the above embodiments, further:

[0042] Sliding pillars 14 slide inside both straight holes 4; when the mold is closed, the end faces of the two sliding pillars 14 are located inside the straight holes 4.

[0043] By setting the sliding column 14 to slide inside the straight hole 4, when the mold is closed, the sliding column 14 slides into the straight hole 4. When the mold is opened, the sliding column 14 descends with the lifting frame 12, which will squeeze the gas inside the straight hole 4 between the end of the sliding column 14 and the bottom of the plastic cup. When this part of the air pressure is large enough, the plastic cup can be blown away quickly. Thus, the device itself generates high-pressure gas to push the plastic cup away, without the need for an external compressed gas supply equipment.

[0044] Further:

[0045] An installation seat 5 is provided inside the straight hole 4 near the bottom of the inner cup mold 2. A slide rod bracket 10 slides on the installation seat 5. A plug 9 is provided at the lower end of the slide rod bracket 10. A spring 11 is provided between the upper end of the slide rod bracket 10 and the installation seat 5.

[0046] When the plug 9 is slid into the lower end of the straight hole 4 under the elastic force of the spring 11 and is pressed against the mounting base 5, the lower end face of the plug 9 and the lower end face of the inner cup mold 2 are on the same plane.

[0047] To prevent molten plastic from being squeezed into the lower end of the straight hole 4 during injection molding, which would affect the quality and release of the plastic cup, a plug 9 is used to seal the lower end of the straight hole 4. Furthermore, the spring force of the spring 11 can push the slide rod 10 upward, causing the slide rod 10 to slide the plug 9 into the lower end of the straight hole 4, thus sealing the lower end of the straight hole 4 and preventing plastic from entering the straight hole 4. At the same time, the lower end face of the plug 9 is on the same plane as the lower end face of the inner cup mold 2, ensuring the quality of the plastic cup.

[0048] The mounting base 5 has an air groove through the slide rod frame 10. When the mold is opened, the slide rod 14 descends with the lifting frame 12, which will squeeze the gas inside the straight hole 4 between the end of the slide rod 14 and the plug 9. When the air pressure is large enough, it can push the plug 9 to overcome the elastic force of the spring 11 and slide out of the straight hole 4. Then the high pressure gas is ejected from the lower end of the straight hole 4, which will quickly blow the plastic cup away.

[0049] Based on the above embodiments, further:

[0050] The slide 14 is provided with an air hole, and a one-way valve is connected to the air hole.

[0051] Because of the presence of plug 9, when the compressed gas is discharged, plug 9 will be affected by the elastic force of spring 11 and automatically slide into straight hole 4, thereby sealing the port of straight hole 4. When slide column 14 slides up, gas cannot be replenished. Therefore, a one-way valve is set up to replenish the gas in straight hole 4 when slide column 14 slides up and to maintain the sealing state when slide column 14 slides down. Spring-type one-way valve can be selected for the one-way valve.

[0052] Of course, the above description is not a limitation of this instruction manual, and this utility model is not limited to the examples mentioned above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this utility model are also within the protection scope of this utility model.

Claims

1. A plastic cup processing device, characterized in that: It includes an inner cup mold (2) and outer cup molds (6) symmetrically fastened to both sides of the inner cup mold (2). The cup mouth end of the inner cup mold (2) is fixed with a main seat (1). The two outer cup molds (6) are rotatably connected to the two ends of the main seat (1) through pins (7). When the two outer cup molds (6) fasten the inner cup mold (2), they cooperate with the main seat (1) to form a cup body cavity. The main seat (1) is provided with an injection tube (3) for injecting plastic into the cup body cavity through the center position of the bottom end of the inner cup mold (2).

2. The plastic cup processing device according to claim 1, characterized in that: Each outer cup mold (6) has symmetrical end pins (8) on both sides. A lifting frame (12) slides through the injection tube (3). Two elongated holes (13) are symmetrically provided on both sides of the lifting frame (12). The four end pins (8) slide in the four elongated holes (13) respectively.

3. The plastic cup processing device according to claim 2, characterized in that: An electric telescopic rod (15) is provided between the lifting frame (12) and the main seat (1).

4. The plastic cup processing device according to claim 1, characterized in that: The inner cup mold (2) and the main seat (1) are provided with two straight holes (4) in the inner axis.

5. The plastic cup processing apparatus according to claim 4, characterized in that: Sliding pillars (14) slide inside both straight holes (4). When the mold is closed, the end faces of the two sliding pillars (14) are located inside the straight holes (4).

6. The plastic cup processing apparatus according to claim 5, characterized in that: An installation seat (5) is provided in the straight hole (4) near the bottom of the inner cup mold (2). A sliding rod frame (10) slides through the installation seat (5). A plug (9) is provided at the lower end of the sliding rod frame (10). A spring (11) is provided between the upper end of the sliding rod frame (10) and the installation seat (5).

7. The plastic cup processing apparatus according to claim 6, characterized in that: When the plug (9) is slid into the lower end of the straight hole (4) by the elastic force of the spring (11) and presses against the mounting base (5), the lower end face of the plug (9) and the lower end face of the inner cup mold (2) are on the same plane.

8. The plastic cup processing apparatus according to claim 7, characterized in that: The slide (14) is provided with an air hole, and a one-way valve is connected to the air hole.

9. The plastic cup processing device according to claim 1, characterized in that: The main seat (1) is equipped with a heating device.

10. The plastic cup processing apparatus according to claim 1, characterized in that: The inner cup mold (2) is cylindrical or conical with a cup mouth diameter greater than the cup bottom diameter.

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