EPP (Expanded Polypropylene) forming machine capable of quickly demoulding

Abstract

The EPP forming machine comprises a mounting frame, a hydraulic oil cylinder and a plurality of fixing rods are fixedly mounted on the mounting frame, a lower mold is jointly and fixedly mounted at the top ends of the fixing rods, a mounting plate is fixedly mounted at the telescopic end of the hydraulic oil cylinder, and the lower mold is fixedly mounted at the telescopic end of the hydraulic oil cylinder. The bottom of the mounting plate abuts against the top of the lower mold, an upper mold is fixedly mounted at the bottom of the mounting plate, an ejection mechanism is arranged between the mounting plate and the multiple fixing rods, a feeding mechanism is arranged at the top of the mounting frame, and the ejection mechanism comprises a first sliding plate slidably connected between the multiple fixing rods; the multiple ejector rods penetrate through the bottom of the lower die and are in sliding connection with the lower die. The EPP product ejection mechanism is reasonable in structural design, after an EPP product is formed, the EPP product located in the lower mold can be automatically ejected out, the manual taking-out operation of an operator is omitted, and the workload of the operator is reduced.

Description

Technical Field

[0001] This utility model relates to the field of EPP molding machine technology, and in particular to an EPP molding machine that can be quickly demolded. Background Technology

[0002] An EPP molding machine is a specialized piece of equipment used to process expanded polypropylene (EPP) granules into products of specific shapes. It heats the EPP granules to a molten state using a heating system, making them malleable and allowing them to be molded in a mold. Then, an injection system injects the molten EPP granules into the mold cavity, filling all parts of the mold to form a blank that matches the mold's shape. The EPP blank injected into the mold cavity is then cooled and solidified by a cooling system, allowing the EPP material to maintain the desired shape within the mold. After cooling is complete, the mold is opened, and the molded EPP product is removed from the mold, completing one molding cycle.

[0003] In existing technology, after the EPP molding machine completes the molding operation, the molded product is inside the mold. At this time, the operator needs to manually remove it from the mold, which is a lot of work for the operator. To solve this problem, we designed an EPP molding machine that can quickly demold. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art by proposing an EPP molding machine that can be quickly demolded.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An EPP molding machine with rapid demolding capability includes a mounting frame. A hydraulic cylinder and multiple fixing rods are fixedly mounted on the mounting frame. A lower mold is fixedly mounted on the top ends of the fixing rods. A mounting plate is fixedly mounted on the telescopic end of the hydraulic cylinder. The bottom of the mounting plate abuts against the top of the lower mold. An upper mold is fixedly mounted on the bottom of the mounting plate. An ejection mechanism is provided between the mounting plate and the fixing rods. A feeding mechanism is provided on the top of the mounting frame. The ejection mechanism includes a first sliding plate slidably connected between the fixing rods. Multiple push rods are fixedly mounted on the top of the first sliding plate, each push rod penetrating the bottom of the lower mold and slidably connected thereto. Multiple second springs are fixedly connected between the bottom of the lower mold and the top of the first sliding plate. Two mounting frames are fixedly mounted on the top of the first sliding plate. Second sliding plates are slidably connected within each of the two mounting frames. Multiple first springs are fixedly connected between the bottom of the second sliding plates and the inner bottom of the opposite mounting frames. Two push plates are fixedly mounted on the bottom of the mounting plate, each push plate extending into the opposite mounting frame and abutting against the top of the opposite second sliding plate.

[0007] Preferably, the feeding mechanism includes a feeding system fixedly installed on the top of the mounting frame. The feeding system is fixedly connected to a telescopic feeding pipe that communicates with its interior. The end of the telescopic feeding pipe passes through the mounting plate and is fixedly connected to it.

[0008] Preferably, multiple lights are fixedly installed on the side walls of both push plates.

[0009] Preferably, a fixing plate is fixedly mounted on the mounting bracket, and a cooling fan is provided on the fixing plate.

[0010] Preferably, the bottom of the mounting bracket is provided with multiple locking casters.

[0011] Compared with the prior art, the advantages of this utility model are as follows:

[0012] 1. With the ejection mechanism, the EPP product can be automatically ejected from the lower mold after the EPP product is formed, eliminating the need for the operator to manually remove it and reducing the operator's workload.

[0013] 2. With the lighting on the push plate, after the EPP product in the mold is ejected, the lighting can provide illumination, making it convenient for the operator to observe the surface of the EPP product and whether there are any defects on the surface of the EPP product.

[0014] In summary, the present invention has a reasonable structural design. After the EPP product is formed, it can automatically eject the EPP product located in the lower mold, eliminating the need for the operator to manually remove it and reducing the operator's workload. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the first state structure of an EPP molding machine with rapid demolding proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of the second state structure of an EPP molding machine with rapid demolding proposed in this utility model;

[0017] Figure 3 for Figure 1 Enlarged view of the structure at point A in the image.

[0018] In the diagram: 1. Mounting frame; 2. Fixing rod; 3. Lower mold; 4. Upper mold; 5. Hydraulic cylinder; 6. Mounting plate; 7. First spring; 8. Feeding system; 9. Telescopic feed pipe; 10. Push plate; 11. Lighting lamp; 12. First sliding plate; 13. Top rod; 14. Second spring; 15. Mounting frame; 16. Second sliding plate. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Reference Figure 1-3 An EPP molding machine with rapid demolding capability includes a mounting frame 1. Multiple locking casters are provided at the bottom of the mounting frame 1. A hydraulic cylinder 5 and multiple fixing rods 2 are fixedly mounted on the mounting frame 1. A lower mold 3 is fixedly mounted on the top of the fixing rods 2. A mounting plate 6 is fixedly mounted on the telescopic end of the hydraulic cylinder 5. The bottom of the mounting plate 6 abuts against the top of the lower mold 3. An upper mold 4 is fixedly mounted on the bottom of the mounting plate 6. Both the lower mold 3 and the upper mold 4 are equipped with heating devices to heat the raw materials entering the lower mold 3. This is existing technology and will not be elaborated upon here. An ejection mechanism is provided between the mounting plate 6 and the fixing rods 2. A feeding mechanism is provided at the top of the mounting frame 1. The ejection mechanism includes components slidably connected between the fixing rods 2. The first sliding plate 12 has multiple push rods 13 fixedly installed on its top. The multiple push rods 13 all pass through the bottom of the lower mold 3 and are slidably connected to it. Multiple second springs 14 are fixedly connected between the bottom of the lower mold 3 and the top of the first sliding plate 12. Two mounting frames 15 are fixedly installed on the top of the first sliding plate 12. A second sliding plate 16 is slidably connected in each of the two mounting frames 15. Multiple first springs 7 are fixedly connected between the bottom of the second sliding plate 16 and the inner bottom of the opposite mounting frame 15. The elastic force of the first springs 7 is much greater than that of the second springs 14. Two push plates 10 are fixedly installed on the bottom of the mounting plate 6. The two push plates 10 extend into the opposite mounting frame 15 and abut against the top of the opposite second sliding plate 16.

[0021] With the ejection mechanism in place, the EPP product can be automatically ejected from the lower mold 3 after the EPP product is formed, eliminating the need for the operator to manually remove it and reducing the operator's workload.

[0022] The feeding mechanism includes a feeding system 8 fixedly installed on the top of the mounting frame 1. A telescopic feeding pipe 9, which is connected to the feeding system 8, is fixedly connected to the feeding system 8. The end of the telescopic feeding pipe 9 passes through the mounting plate 6 and is fixedly connected to it.

[0023] Multiple lights 11 are fixedly installed on the side walls of both push plates 10.

[0024] With the lighting 11 on the push plate 10, after the EPP product in the lower mold 3 is ejected, the lighting 11 can provide illumination for it, so that the operator can observe the surface of the EPP product and see if there are any defects on the surface of the EPP product.

[0025] A mounting plate is fixedly installed on the mounting bracket 1, and a cooling fan is installed on the mounting plate.

[0026] By using a cooling fan, once the EPP product is molded, the cooling fan can accelerate the cooling speed of the EPP product between the lower mold 3 and the upper mold 4, reducing the time the operator needs to wait for the product to cool down.

[0027] The functional principle of this utility model can be explained through the following operation methods:

[0028] Equipment preparation and commissioning

[0029] Check the stability of the mounting bracket 1, ensure that the fixed rod 2, lower mold 3 and other components are firmly connected, and lock the bottom casters to prevent the equipment from moving.

[0030] Adjust the hydraulic cylinder 5 to ensure that the mounting plate 6 and the upper mold 4 can move up and down smoothly. At the same time, check whether the auxiliary equipment such as the cooling fan and the feeding system 8 are operating normally.

[0031] Raw material injection and mold closure

[0032] When the feeding system 8 is started, EPP granules are conveyed into the lower mold 3 through the telescopic feed pipe 9. The telescopic feed pipe can move with the mounting plate 6 to ensure smooth feeding.

[0033] The hydraulic cylinder 5 is extended, pushing the mounting plate 6 and the upper mold 4 downwards until the upper mold 4 and the lower mold 3 fit tightly together to form a closed cavity. At this time, the push plate 10 at the bottom of the mounting plate 6 inserts into the mounting frame 15, squeezing the second sliding plate 16 and compressing the first spring 7. The first sliding plate 12 compresses the second spring 14 under pressure, and the push rod 13 retracts into the lower mold 3.

[0034] Heating and Cooling

[0035] Start the heating devices of the lower mold 3 and the upper mold 4 to heat the EPP granules to a molten state and shape them.

[0036] After molding, the cooling fan is turned on to accelerate the cooling and curing of the product. The cooling fan is mounted on the mounting bracket 1 via a fixing plate, which can quickly reduce the mold temperature.

[0037] Automatic demolding operation

[0038] After cooling is complete, the hydraulic cylinder 5 is controlled to retract, which drives the mounting plate 6 and the upper mold 4 to return to their original position. The push plate 10 then moves upward, releasing the pressure on the second sliding plate 16.

[0039] Since the elastic force of the first spring 7 is much greater than that of the second spring 14, the first spring 7 first rebounds and pushes the second sliding plate 16 upward. When the bottom of the push plate 10 is separated from the top of the second sliding plate 16, the upper mold 4 is completely separated from the lower mold 3, causing the hydraulic cylinder 5 to stop contracting. During this process, the cooling fan is restarted to further ensure the cooling of the product. Then the operator continues to start the hydraulic cylinder 5 to contract, and the second spring 14 begins to rebound, driving the first sliding plate 12 to rise. The push rod 13 penetrates the bottom of the lower mold 3 and pushes the molded product out of the lower mold 3.

[0040] Product inspection and collection

[0041] During the demolding process, the lighting lamp 11 on the side wall of the push plate 10 is turned on to illuminate the ejected product, making it easier for the operator to observe whether there are any defects on the surface, such as bubbles or deformation.

[0042] The ejected products are manually removed to complete the collection.

[0043] Equipment Reset

[0044] After one molding cycle is completed, the hydraulic cylinder 5 pushes the mounting plate 6 down again, the push plate 10 presses the second sliding plate 16 again, causing the push rod 13 to retract, and the equipment returns to the waiting state, ready for the next operation.

[0045] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An EPP molding machine with rapid demolding capability, comprising a mounting frame (1), characterized in that, A hydraulic cylinder (5) and multiple fixing rods (2) are fixedly installed on the mounting frame (1). A lower mold (3) is fixedly installed on the top of the multiple fixing rods (2). An mounting plate (6) is fixedly installed on the telescopic end of the hydraulic cylinder (5). The bottom of the mounting plate (6) abuts against the top of the lower mold (3). An upper mold (4) is fixedly installed on the bottom of the mounting plate (6). An ejection mechanism is provided between the mounting plate (6) and the multiple fixing rods (2). A feeding mechanism is provided on the top of the mounting frame (1). The ejection mechanism includes a first sliding plate (12) slidably connected between multiple fixed rods (2). Multiple ejector rods (13) are fixedly installed on the top of the first sliding plate (12). The multiple ejector rods (13) all pass through the bottom of the lower mold (3) and are slidably connected thereto. Multiple second springs (14) are fixedly connected between the bottom of the lower mold (3) and the top of the first sliding plate (12). Two mounting frames (15) are fixedly installed on the top of the first sliding plate (12). A second sliding plate (16) is slidably connected inside each of the two mounting frames (15). Multiple first springs (7) are fixedly connected between the bottom of the second sliding plate (16) and the inner bottom of the opposite mounting frame (15). Two push plates (10) are fixedly installed on the bottom of the mounting plate (6). The two push plates (10) extend into the opposite mounting frame (15) and abut against the top of the opposite second sliding plate (16).

2. The EPP molding machine with rapid demolding capability according to claim 1, characterized in that, The feeding mechanism includes a feeding system (8) fixedly installed on the top of the mounting frame (1). A telescopic feeding pipe (9) is fixedly connected to the feeding system (8) and communicates with its interior. The end of the telescopic feeding pipe (9) passes through the mounting plate (6) and is fixedly connected to it.

3. The EPP molding machine with rapid demolding capability according to claim 1, characterized in that, Multiple lighting lamps (11) are fixedly installed on the side walls of both push plates (10).

4. The EPP molding machine with rapid demolding capability according to claim 1, characterized in that, A fixing plate is fixedly installed on the mounting bracket (1), and a cooling fan is provided on the fixing plate.

5. The EPP molding machine with rapid demolding capability according to claim 1, characterized in that, The bottom of the mounting bracket (1) is provided with multiple locking casters.

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