Central vacuumizing device for EPP forming machine

Abstract

The utility model relates to the technical field of forming machine vacuumizing, and discloses a central vacuumizing device for an EPP forming machine, which comprises a shell and a water ring vacuum pump, the outer side of the shell is fixedly connected with a box body, the inside of the box body is fixedly connected with a mounting base, the top of the mounting base is provided with a sliding mounting component, and the sliding mounting component is fixedly connected with the water ring vacuum pump. The shell is internally provided with a filtering assembly, the sliding installation assembly comprises a sliding groove, the sliding groove is fixedly connected to the top of the installation base, a sliding block is slidably connected to the interior of the sliding groove, the outer side of a pin rod is sleeved with a first spring, and a pin hole is formed in the sliding groove. According to the water ring vacuum pump, the water ring vacuum pump is rapidly positioned and locked through cooperation of the sliding block, the spring and other components, mounting and dismounting are convenient, and the working efficiency is improved. After the EPP object is formed, the spray head sprays water for cooling, waste water is filtered by the filter screen, the filter screen cleaning operation is convenient, and the filtered water can be recycled to the water ring vacuum pump for use.

Description

Technical Field

[0001] This utility model relates to the field of vacuum technology for molding machines, and in particular to a central vacuum device for EPP molding machines. Background Technology

[0002] EPP (expanded polypropylene) is a high-performance, highly crystalline thermoplastic foam material that is lightweight, provides strong cushioning, has good temperature resistance, and is recyclable. In the automotive manufacturing industry, it is commonly used to make components such as bumpers and dashboards to improve vehicle safety and comfort, and to meet the cushioning and insulation needs of different scenarios.

[0003] Currently, the central vacuum system of an EPP molding machine mainly consists of a vacuum pump, a piping system, a vacuum tank, and control valves. The vacuum pump, as the core component, generates negative pressure through mechanical movement; the piping system connects all components to achieve vacuum transmission; the vacuum tank stores and stabilizes the vacuum pressure; and the control valves regulate the vacuum level and gas flow direction.

[0004] However, most existing vacuum pumps are installed using bolt fixing. When the pump malfunctions and needs to be repaired or replaced, or when the equipment layout needs to be adjusted due to production requirements, the disassembly and installation process is cumbersome and time-consuming, requiring the use of various tools and consuming a lot of manpower and time costs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a central vacuum device for EPP molding machines, aiming to improve the cumbersome disassembly and installation process of vacuum pumps in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A central vacuum device for an EPP molding machine includes a housing and a water ring vacuum pump. A box is fixedly connected to the outside of the housing, and a mounting base is fixedly connected to the inside of the box. A sliding mounting assembly is mounted on the top of the mounting base, and a filter assembly is installed inside the housing.

[0008] The sliding mounting assembly includes a sliding groove, which is fixedly connected to the top of the mounting base. A slider is slidably connected inside the sliding groove, and the slider is fixedly connected to the bottom of the water ring vacuum pump. A mounting box is fixedly connected inside the mounting base, and a pin is slidably connected inside the mounting box. A spring is sleeved on the outside of the pin, and a blocking rod is fixedly connected to the outside of the pin. A pin hole is opened inside the sliding groove, and the pin and the pin hole are engaged with each other.

[0009] As a further description of the above technical solution:

[0010] The filter assembly includes a filter box, inside which a square filter screen is fixedly connected, and outside which a fixing block is fixedly connected. Inside the fixing block, a rotating shaft is rotatably connected, and outside the rotating shaft, a box cover is fixedly connected. Inside the box cover, a groove is formed, inside which a second spring is fixedly connected. The other end of the second spring is fixedly connected to a locking block, and a lever is fixedly connected to the top of the locking block. The top of the filter box is fixedly connected to a locking tongue, and the locking tongue and the locking block are engaged with each other.

[0011] As a further description of the above technical solution:

[0012] An organic door is fixedly connected to the outer side of the outer casing;

[0013] As a further description of the above technical solution:

[0014] An EPP molding machine is fixedly connected inside the housing, an installation cabinet is fixedly connected to the outside of the housing, a display screen is fixedly connected to the outside of the installation cabinet, and an adjuster is fixedly connected to the outside of the installation cabinet.

[0015] As a further description of the above technical solution:

[0016] A nozzle is fixedly connected inside the outer casing, a partition is fixedly connected inside the outer casing, a collection pipe is fixedly connected to the bottom of the partition, and the other end of the collection pipe is fixedly connected to the outside of the filter box.

[0017] As a further description of the above technical solution:

[0018] A connecting pipe is fixedly connected to the outside of the filter box, a bracket is fixedly connected to the bottom of the connecting pipe, a solenoid valve is fixedly connected to the outside of the connecting pipe, and the water ring vacuum pump is fixedly connected to the end of the connecting pipe away from the filter box.

[0019] As a further description of the above technical solution:

[0020] A drain pipe is fixedly connected to the outside of the water ring vacuum pump. An air extraction port and an air outlet are fixedly connected to the outside of the water ring vacuum pump. An air extraction pipe is fixedly connected to the outside of the air extraction port. The air extraction pipe is fixedly connected to the outside of the outer shell.

[0021] As a further description of the above technical solution:

[0022] A handle is fixedly connected to the outside of the pin.

[0023] This utility model has the following beneficial effects:

[0024] 1. In this utility model, the water ring vacuum pump can achieve position adjustment by sliding the slider in the sliding groove. When it is moved to the appropriate position, the handle is pulled open so that the pin rod is disengaged from the pin hole under the action of the spring. Then the slider is moved into the designated position and the handle is released. The elastic force of the spring will cause the pin rod to re-insert into the pin hole, thereby locking the water ring vacuum pump. This design makes the installation and disassembly of the water ring vacuum pump faster, effectively improving work efficiency and saving time costs.

[0025] 2. In this utility model, after the EPP object is made, the nozzle is activated to spray external water to quickly cool the workpiece and promote its forming. The wastewater generated will flow into the filter box through the collection pipe. The square filter screen in the filter box will filter the wastewater. When it is necessary to clean or replace the square filter screen, the sliding lever will cause the spring to contract, which will drive the locking block to move outward and disengage the locking tongue from the groove. This will open the box cover and remove the square filter screen for cleaning or replacement. The filtered water can be introduced into the water ring vacuum pump through the connecting pipe by opening the solenoid valve and used as the water source for water ring circulation. Attached Figure Description

[0026] Figure 1 This is a three-dimensional schematic diagram of a central vacuum device for an EPP molding machine proposed in this utility model.

[0027] Figure 2 This is a schematic diagram of the internal structure of a central vacuum device for an EPP molding machine according to the present invention.

[0028] Figure 3 This is a schematic diagram of the structure of a water ring vacuum pump for a central vacuum device of an EPP molding machine, as proposed in this utility model.

[0029] Figure 4 This is a schematic diagram of the sliding groove of a central vacuum device for an EPP molding machine proposed in this utility model.

[0030] Figure 5 This is a schematic diagram of the structure of a spring in the central vacuum device for an EPP molding machine according to the present invention.

[0031] Figure 6 This is a schematic diagram of the filter assembly of a central vacuum device for an EPP molding machine proposed in this utility model.

[0032] Figure 7 This is a schematic diagram of the structure of a spring 2 in the central vacuum device for an EPP molding machine proposed in this utility model.

[0033] Legend:

[0034] 1. Outer shell; 2. Suction pipe; 3. Box body; 4. Suction port; 5. Exhaust port; 6. Handle; 7. Water ring vacuum pump; 8. Mounting base; 9. Sliding groove; 10. Slider; 11. Drain pipe; 12. Pin rod; 13. Spring 1; 14. Blocking rod; 15. Mounting box; 16. Pin hole; 17. Connecting pipe; 18. Collection pipe; 19. Partition plate; 20. Box cover; 21. Filter box; 22. Rotating shaft; 23. Fixing block; 24. Locking tongue; 25. Groove; 26. Spring 2; 27. Locking block; 28. Toggle lever; 29. ​​EPP molding machine; 30. Nozzle; 31. Mounting cabinet; 32. Display screen; 33. Regulator; 34. Machine door; 35. Bracket; 36. Solenoid valve; 37. Square filter screen. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1-5 The present invention provides an embodiment of a central vacuum device for an EPP molding machine, comprising a housing 1 and a water ring vacuum pump 7. The water ring vacuum pump 7 includes a pump body as the basic structure, an impeller rotating within the pump body, a water ring forming a sealed space, a gas intake port for drawing in gas, a gas exhaust port for discharging gas, a packing seal to prevent leakage, bearings supporting rotating components, and a coupling connecting to a power source, etc., which are existing technologies and will not be described in detail hereafter. A housing 3 is fixedly connected to the outside of the housing 1, and a mounting base 8 is fixedly connected to the inside of the housing 3. The mounting base 8 is for mounting a sliding groove 9 and for stabilizing the water ring vacuum pump 7. A sliding mounting assembly is installed on the top of the mounting base 8, and a filter assembly is installed inside the housing 1.

[0037] The sliding mounting assembly includes a sliding groove 9, which is fixedly connected to the top of the mounting base 8. A slider 10 is slidably connected inside the sliding groove 9 and fixedly connected to the bottom of the water ring vacuum pump 7. The slider 10 is trapezoidal. For a more secure connection, a mounting box 15 is fixedly connected inside the mounting base 8. The mounting box 15 provides support for the spring 13 and protects it. A pin 12 is slidably connected inside the mounting box 15, and the spring 13 is sleeved on the outside of the pin 12. Pulling the handle 6 causes the pin 12 to disengage under the action of the spring 13. After removing the pin hole 16, move the slider 10 to the designated position and then release the handle 6. The elastic force of the spring 13 will cause the pin 12 to re-insert into the pin hole 16, thereby locking the water ring vacuum pump 7. The outer side of the pin 12 is fixedly connected to the blocking rod 14, which prevents the spring 13 from slipping. The sliding groove 9 has a pin hole 16 inside, and the pin 12 and the pin hole 16 are interlocked. The outer side of the pin 12 is fixedly connected to the handle 6. This design makes the installation and disassembly of the water ring vacuum pump quicker, effectively improving work efficiency and saving time costs.

[0038] Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 The filter assembly includes a filter box 21, inside which a square filter screen 37 is fixedly connected. The square filter screen 37 is easy to remove and prevents unfiltered material from splashing during filtration. A fixing block 23 is fixedly connected to the outside of the filter box 21. A rotating shaft 22 is rotatably connected inside the fixing block 23. The fixing block 23 is circular and cooperates with the rotating shaft 22 to enable the opening function. A box cover 20 is fixedly connected to the outside of the rotating shaft 22. A groove 25 is opened inside the box cover 20. A second spring 26 is fixedly connected inside the groove 25. A sliding lever 28 causes the second spring 26 to retract, driving the locking block 27 to move outward, allowing the locking tongue 24 to disengage from the groove 25, thus opening the box cover 20. The other end of the second spring 26 is fixedly connected to... There is a locking block 27, and a lever 28 is fixedly connected to the top of the locking block 27. A locking tongue 24 is fixedly connected to the top of the filter box 21. The locking tongue 24 and the locking block 27 are interlocked. A connecting pipe 17 is fixedly connected to the outside of the filter box 21. The connecting pipe 17 can introduce wastewater for recycling. A bracket 35 is fixedly connected to the bottom of the connecting pipe 17. A solenoid valve 36 is fixedly connected to the outside of the connecting pipe 17. The solenoid valve 36 includes an electromagnetic field generated when the coil is energized, a valve core connecting the coil, and a coil housing protecting the internal components of the solenoid valve. This is existing technology and will not be described in detail hereafter. A water ring vacuum pump 7 is fixedly connected to the end of the connecting pipe 17 away from the filter box 21. The filtered water is introduced into the water ring vacuum pump 7 for water recycling.

[0039] Reference Figures 1-4An outer shell 1 has a fixed door 34 on its outer side. An EPP molding machine 29 is fixedly connected inside the outer shell 1. The EPP molding machine includes a mold cavity for molding EPP products, a steam pipe for supplying heated steam, a cooling system for cooling and shaping the products, a feeding device for supplying EPP raw materials, a pneumatic system for providing power to open and close the mold, a control system for adjusting various parameters, and a demolding mechanism for ejecting the molded products. This is existing technology and will not be described in detail hereafter. An installation cabinet 31 is fixedly connected to the outer side of the outer shell 1. A display screen 32 is fixedly connected to the outer side of the installation cabinet 31. The display screen 32 includes an LCD panel for displaying images, a backlight for providing light, a drive circuit for controlling pixel display, a control chip for processing signals, a frame for protection and decoration, a power module for providing power, and an interface for data transmission. This is existing technology and will not be described in detail hereafter. The installation cabinet 31... An regulator 33 is fixedly connected to the outside for adjusting air pressure, temperature, etc. A nozzle 30 is fixedly connected inside the outer shell 1. The outside of the nozzle 30 is connected to an external water source for cooling the processed workpiece, so that the workpiece can be quickly formed. A partition 19 is fixedly connected inside the outer shell 1. A collection pipe 18 is fixedly connected to the bottom of the partition 19. The purpose of the collection pipe 18 is to collect wastewater and pass it into the filter box 21. After filtration, it is injected into the water ring vacuum pump 7. The other end of the collection pipe 18 is fixedly connected to the outside of the filter box 21. A drain pipe 11 is fixedly connected to the outside of the water ring vacuum pump 7 to discharge wastewater. An air extraction port 4 and an air outlet 5 are fixedly connected to the outside of the water ring vacuum pump 7. An air extraction pipe 2 is fixedly connected to the outside of the air extraction port 4 to extract the gas in the machine. The air extraction pipe 2 is fixedly connected to the outside of the outer shell 1.

[0040] Working principle: First, the water ring vacuum pump 7 can be moved by sliding the slider 10 in the sliding groove 9. When it is moved to the appropriate position, pull open the handle 6 to pull open the pin 12. The spring 13 is compressed and the pin 12 disengages from the pin hole 16. Move the slider 10 in, and then release the pin 12. The spring 13 pops out and the pin 12 inserts into the pin hole 16, locking the water ring vacuum pump 7. This allows for quick disassembly and installation, improving work efficiency and saving time.

[0041] In addition, after the EPP object is made, the nozzle 30 is activated to spray external water to quickly cool the workpiece and shape it. The wastewater generated flows into the filter box 21 through the collection pipe 18. The square filter screen 37 in the filter box 21 filters the wastewater. When cleaning and replacement are required, slide the lever 28 to retract the spring 26, and the locking block 27 moves outward. It slides through the groove 25 to disengage the locking tongue 24 from the groove, which opens the box cover 20. At this time, the square filter screen 37 is taken out for cleaning and replacement. The filtered water is then fed into the water ring vacuum pump 7 through the connecting pipe 17 after the solenoid valve 36 is opened for use as a water source for the water ring.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A central vacuum device for an EPP molding machine, comprising a housing (1) and a water ring vacuum pump (7), characterized in that: A housing (3) is fixedly connected to the outside of the outer shell (1), and an installation base (8) is fixedly connected to the inside of the housing (3). A sliding installation assembly is installed on the top of the installation base (8), and a filter assembly is installed inside the outer shell (1). The sliding mounting assembly includes a sliding groove (9), which is fixedly connected to the top of the mounting base (8). A slider (10) is slidably connected inside the sliding groove (9). The slider (10) is fixedly connected to the bottom of the water ring vacuum pump (7). A mounting box (15) is fixedly connected inside the mounting base (8). A pin (12) is slidably connected inside the mounting box (15). A spring (13) is sleeved on the outside of the pin (12). A blocking rod (14) is fixedly connected to the outside of the pin (12). A pin hole (16) is opened inside the sliding groove (9). The pin (12) and the pin hole (16) are engaged with each other.

2. A central vacuum device for an EPP molding machine according to claim 1, characterized in that: The filter assembly includes a filter box (21), a square filter screen (37) is fixedly connected inside the filter box (21), a fixing block (23) is fixedly connected to the outside of the filter box (21), a rotating shaft (22) is rotatably connected inside the fixing block (23), a box cover (20) is fixedly connected to the outside of the rotating shaft (22), a groove (25) is opened inside the box cover (20), a second spring (26) is fixedly connected inside the groove (25), a locking block (27) is fixedly connected to the other end of the second spring (26), a lever (28) is fixedly connected to the top of the locking block (27), a locking tongue (24) is fixedly connected to the top of the filter box (21), and the locking tongue (24) and the locking block (27) are engaged with each other.

3. A central vacuum device for an EPP molding machine according to claim 1, characterized in that: An organic door (34) is fixedly connected to the outside of the outer casing (1).

4. A central vacuum device for an EPP molding machine according to claim 1, characterized in that: An EPP molding machine (29) is fixedly connected inside the outer shell (1), and an installation cabinet (31) is fixedly connected to the outer side of the outer shell (1). A display screen (32) is fixedly connected to the outer side of the installation cabinet (31), and an adjuster (33) is fixedly connected to the outer side of the installation cabinet (31).

5. A central vacuum device for an EPP molding machine according to claim 2, characterized in that: A nozzle (30) is fixedly connected inside the outer shell (1), a partition (19) is fixedly connected inside the outer shell (1), a collection pipe (18) is fixedly connected to the bottom of the partition (19), and the other end of the collection pipe (18) is fixedly connected to the outside of the filter box (21).

6. A central vacuum device for an EPP molding machine according to claim 2, characterized in that: A connecting pipe (17) is fixedly connected to the outside of the filter box (21), a bracket (35) is fixedly connected to the bottom of the connecting pipe (17), a solenoid valve (36) is fixedly connected to the outside of the connecting pipe (17), and the water ring vacuum pump (7) is fixedly connected to the end of the connecting pipe (17) away from the filter box (21).

7. A central vacuum device for an EPP molding machine according to claim 1, characterized in that: A drain pipe (11) is fixedly connected to the outside of the water ring vacuum pump (7). An air extraction port (4) and an air outlet (5) are fixedly connected to the outside of the water ring vacuum pump (7). An air extraction pipe (2) is fixedly connected to the outside of the air extraction port (4). The air extraction pipe (2) is fixedly connected to the outside of the outer shell (1).

8. A central vacuum device for an EPP molding machine according to claim 1, characterized in that: A handle (6) is fixedly connected to the outside of the pin (12).

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