Central energy distributor for molding machine and method of using the same

Abstract

The present invention provides a central energy distributor for a molding machine, including a shell, one side of the shell is a steam input end, a first chamber connected to the steam input end is provided inside the shell, the opposite side of the steam input end of the shell is a steam output end, after the steam enters the first chamber, it enters a plurality of channels formed on both sides of the first chamber, each channel is respectively installed with a proportional control valve for controlling the opening and closing of each channel, there are multiple steam output ends and they are respectively connected to the fixed mold and the movable mold of the molding machine mold; a second chamber is also provided inside the shell, an air interface is provided on the shell on one side of the second chamber, both sides of the second chamber are respectively connected to the channels on the side of the first chamber, and a proportional control valve for controlling the opening and closing of the channel is installed on the side of the second chamber, and the second chamber is connected to the steam output end through the channel. The molding machine of the present invention reduces the maintenance cost of the pipeline system and reduces the difficulty of the control logic of the pipeline system part of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of equipment for forming and preparing bead foam products, and in particular to a central energy distributor of a forming machine and a use method thereof. Background Art

[0002] EPP is the abbreviation of expanded polypropylene, which is the abbreviation of a new type of bead foam plastic. EPP is a polypropylene plastic foam material, which is a high-crystalline polymer gas composite material with excellent performance. With its unique and superior performance, it has become the fastest growing new environmentally friendly pressure-resistant buffer insulation material. EPP is also an environmentally friendly material that can be recycled and reused, can be naturally degraded, and will not cause white pollution. Based on the above advantages, EPP products are more and more widely used. The equipment needed in the EPP production process is the EPP molding machine.

[0003] The existing EPP foaming molding machine energy system includes three parts: a steam pipeline system, an air pipeline system and a cooling water pipeline system. The air pipeline system also includes an exhaust pipeline for discharging gas from the mold cavity to adjust the pressure of the mold cavity.

[0004] The defect of the existing EPP foaming molding machine is that the traditional equipment controls the above three systems by zone control, and basically the pipelines are not shared. This leads to complicated equipment body pipelines and control valves, difficulty in equipment assembly, and complex control logic, resulting in low reliability of the overall system. Summary of the invention

[0005] The present invention aims to solve the problem that the current energy system of a molding machine uses a single pipeline to supply energy, resulting in complicated pipelines of the molding machine body and great difficulty in assembly. In view of the above-mentioned deficiencies in the prior art, a central energy distributor for a molding machine and a method of using the same are provided.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A central energy distributor for a molding machine comprises a shell, one side of the shell is a steam input end, a first chamber connected to the steam input end is provided inside the shell, a steam output end is provided on the opposite side of the shell to the steam input end, a plurality of channels connected to the first chamber are formed on both sides of the first chamber, after the steam enters the first chamber, the steam enters the plurality of channels formed on both sides of the first chamber, each channel is respectively provided with a proportional control valve for controlling the opening and closing of the respective channels, and the steam output ends are in plurality and are respectively used to be connected to the fixed mold and the movable mold of the molding machine mold;

[0008] A second chamber is also provided inside the shell, an air interface is provided on the shell on one side of the second chamber, both sides of the second chamber are respectively connected with the channels on the side of the first chamber, and a proportional control valve for controlling the opening and closing of the channel is installed on the side of the second chamber, and the second chamber is connected with the steam output end through the channel.

[0009] A molding machine is provided, equipped with any one of the above-mentioned molding machine central energy distributors.

[0010] The method for using the central energy distributor of the molding machine includes the following steps:

[0011] (1) Steam heating: according to the performance requirements of the product, the proportional control valve on the side of the first cavity corresponding to the shifting mold cavity or the proportional control valve on the side of the first cavity corresponding to the fixed mold cavity is opened, the proportional control valves on both sides of all the second cavities are closed, and the proportional control valves in all the exhaust cavities are closed, so as to heat the product in the shifting mold cavity or the product in the fixed mold cavity respectively;

[0012] (2) Allow air to enter, close all proportional control valves on the side of the first chamber, close all proportional control valves in the exhaust chamber, and open the proportional control valve on the side of the second chamber;

[0013] (3) Exhaust, close all the proportional control valves on the side of the first chamber, open the proportional control valve on the exhaust chamber corresponding to the steam output end according to the product situation in the fixed mold cavity or the movable mold cavity, and close the proportional control valve on the side of the second chamber.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention provides a central energy distributor for a molding machine, which has the following functions: first, quantitatively and accurately delivering steam from an external steam source to the fixed mold and the movable mold cavity of the mold, so as to achieve heating; second, quantitatively and accurately delivering air to the fixed mold and the movable mold cavity of the mold, so as to achieve product cooling; third, regulating the air pressure in the fixed mold and the movable mold cavity of the mold, that is, the gas in the cavity can be discharged; the present invention makes the pipeline system of the molding machine more compatible with the frame, reduces the complicated pipeline system in the equipment, so that the molding machine has a compact structure, greatly reduces the material cost of the pipeline system part, reduces the maintenance cost of the pipeline system, and at the same time reduces the assembly difficulty and control logic difficulty of the pipeline system part of the equipment;

[0016] The central energy distributor of the molding machine provided by the present invention has a simple structure, clear operation logic, and is valuable for batch production;

[0017] The existing molding machine has two mufflers, but the present invention uses only one muffler. Since the power of the muffler can be designed according to the flow rate of the gas / liquid, the muffler effect will not be reduced by using only one muffler. The distribution control of the central energy distributor also reduces the number of control valves, and the total length of the pipeline of the entire machine is greatly reduced, which ultimately reduces the difficulty of assembling the equipment, the difficulty of control logic and the cost.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the central energy distributor of the molding machine of the present invention;

[0020] Figure 2 A bottom view of the central energy distributor of the molding machine of the present invention;

[0021] Figure 3 It is a rear view of the central energy distributor of the molding machine of the present invention;

[0022] Figure 4 For the present invention Figure 3 AA section view;

[0023] Figure 5 It is a side view of the central energy distributor of the molding machine of the present invention;

[0024] Figure 6 for Figure 5 BB cross-sectional view;

[0025] Figure 7 for Figure 5 CC cross-sectional view.

[0026] The reference numerals in the figure are: shell 1, steam input end 11, first chamber 12, steam output end 13, second chamber 14, air interface 141, channel 15, exhaust interface 16, exhaust chamber 161, partition 162, mounting seat 17, valve hole 2. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and functions of the present invention clearer and easier to understand, the present invention is further described below in conjunction with the accompanying drawings and specific embodiments:

[0028] Example 1

[0029] In this embodiment, Figure 1-Figure 3As shown, the central energy distributor of the molding machine includes a shell 1. The shell 1 as a whole can be a hexahedral structure. One side of the shell 1 is a steam input end 11, which is connected to the steam pipeline outside the central energy distributor of the molding machine. The lower part of the steam input end 11 is a first chamber 12 opened inside the shell 1. Figure 4 As shown, steam enters the first chamber 12 from the steam input end 11 and is stored. The opposite side of the steam input end 11 of the shell 1 is the steam output end 13. The steam input end 11 is a flange port, and the diameter of the steam input end 11 is larger than the diameter of the steam output end 13. After the steam enters the first chamber 12, it enters a plurality of channels 15 formed on both sides of the first chamber 12. The channels 15 can be formed by setting a partition 162 in the inner cavity of the shell 1. In this embodiment, two channels 15 are formed on both sides of the first chamber 12. The channel 15 on one side transports the steam to the mold cavity of the mold transfer (the mold is not shown in the figure), and the two channels 15 on the other side correspond to the mold cavity of the mold fixed. In order to facilitate the control of steam, a valve hole 2 is opened on the side wall of each channel 15. A proportional control valve located on the side of the shell 1 is installed in the valve hole 2, as shown in FIG. Figure 5The proportional control valve shown is located on the shell 1. The specific installation method is to drill holes on both sides of the first chamber 12, and the proportional control valve passes through the outer wall of the shell 1 and then passes through the channel 15 to extend into the hole and block the hole. The following proportional control valves are all installed in the same way. The steam output in the channel 15 can be controlled by the proportional control valve respectively, and the steam amount can be accurately provided according to the specific pressure required for material molding, thereby avoiding unnecessary energy waste, controlling the production cost to a certain extent, and facilitating the molding of EPP materials; at the same time, there are four steam output terminals 13, which are respectively used to communicate with the fixed mold and the movable mold of the molding machine mold. In this embodiment, each steam output terminal 13 corresponds to a channel 15, which is connected to the first chamber 12, so as to facilitate the proportional Control of the control valve; a second chamber 14 is also provided inside the shell 1, and the second chamber 14 is used to accommodate the air input from the air interface 141 provided on one side of the second chamber 14. In order to facilitate the control of cooling of the movable mold and the fixed mold cavity of the mold, the two sides of the second chamber 14 are connected with the channel 15 on the side of the first chamber 12. Since the side of the first chamber 12 has one or two channels 15, a hole is provided on both sides of the second chamber 14, which is connected with the channel 15. Each channel 15 also has a valve hole 2, and a proportional control valve is installed in the valve hole 2. The proportional control valve extends into the hole in the wall of the second chamber 14. The second chamber 14 is connected with the steam output end 13 through the channel 15 to respectively deliver air to the mold cavities of the fixed mold and the movable mold of the mold. In order to facilitate the detection of the pressure and temperature conditions of the first chamber 12, a temperature sensor and a pressure sensor interface (not shown in the figure) are provided on the shell outside the first chamber 12. At the same time, a temperature sensor and a pressure sensor interface are also provided on the inner wall of the second chamber 14 and the channel 15 in the shell. The position of each interface can be reasonably selected according to the actual shape of the shell.

[0030] Furthermore, the shell 1 is also provided with two exhaust interfaces 16, which are installed on the shell 1 near the steam output terminal 13, wherein one exhaust interface 16 is connected to the channel 15 on the side of the first chamber 12 through an exhaust cavity 161 formed on the side of the shell 1, thereby connecting to the fixed mold cavity, and the other exhaust interface 16 is connected to the channel 15 on the other side of the first chamber 12 through another exhaust cavity 161 formed on the side of the shell 1, thereby connecting to the movable mold cavity; each exhaust cavity 161 is respectively connected to two steam output terminals 13, and each steam output terminal 13 corresponds to a proportional control valve installed on the shell 1 and located in the exhaust cavity 161.

[0031] Furthermore, in order to facilitate fixed installation, the outer wall of the housing 1 extends outward to form a mounting seat 17, and the mounting seat 17 is provided with a mounting hole for mounting a bolt.

[0032] Furthermore, both exhaust ports 16 are connected to a muffler. The present invention uses only one muffler. Since the power of the muffler can be designed according to the flow rate of the gas / liquid, the use of only one muffler in the present invention does not reduce the muffler effect.

[0033] The present invention also seeks to protect a molding machine equipped with any of the above-mentioned molding machine central energy distributors.

[0034] The present invention also claims a method for using a central energy distributor of a molding machine, comprising the following steps:

[0035] (1) Steam heating: according to the performance requirements of the product, the demand for product heating is selected, and the proportional control valve corresponding to the shifting mold cavity or the proportional control valve corresponding to the fixed mold cavity on the side of the first chamber 12 is opened, and all the proportional control valves on both sides of the second chamber 14 are closed, and all the proportional control valves in the exhaust chamber 161 are closed. Steam enters the steam input end 11 from the steam source and is output from the steam output end 13 under the control of the proportional control valve, so as to heat the sides of the product in the shifting mold cavity or the product in the fixed mold cavity respectively;

[0036] (2) Air intake: In this step, all proportional control valves on the side of the first chamber 12 need to be closed, all proportional control valves in the exhaust chamber 161 need to be closed, and the proportional control valves on the side of the second chamber 14 need to be opened. Air enters the air interface 141 of the housing 1 from the external air source, and enters the transfer mold cavity or the fixed mold cavity from the steam output end 13, respectively, to cool the sides of the product in the mold cavity;

[0037] (3) Exhaust: In this step, all the proportional control valves on the side of the first cavity 12 need to be closed. According to the pressure in the fixed mold cavity or the shifting mold cavity, the proportional control valve on the exhaust cavity 161 corresponding to the steam output end 13 is opened, and the proportional control valve on the side of the second cavity 14 is closed to adjust the pressure in the mold cavity. There is no order for the three steps, and they can be adjusted according to the product processing conditions in the mold cavity.

[0038] Example 2

[0039] The central energy distributor of the molding machine in this embodiment is basically the same as that in the embodiment 1, except that a channel 15 is formed on both sides of the first chamber 12 in this embodiment, and the channel 15 extends from the side of the second chamber 14 to the steam output end 13, and a partition 162 is arranged between the channels 15, and a valve hole 2 is opened on the side wall of each channel 15, and a proportional control valve located on the side of the housing 1 is installed on the valve hole 2. A hole connected to the channel 15 is opened on both sides of the second chamber 14, so that air is sent into the chamber of the mold through the steam output end 13.

[0040] The method of using the central energy distributor of the molding machine in this embodiment is the same as that in Embodiment 1 and will not be repeated here.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A central energy distributor for a molding machine, comprising a housing, characterized in that: One side of the shell is a steam input end, a first chamber connected to the steam input end is provided inside the shell, a steam output end is provided on the opposite side of the shell to the steam input end, a plurality of channels connected to the first chamber are formed on both sides of the first chamber, and a proportional control valve for controlling the opening and closing of each channel is installed on each channel, and there are a plurality of steam output ends, which are respectively used to be connected to the fixed mold and the movable mold of the molding machine mold; A second chamber is also provided inside the shell, an air interface is provided on the shell on one side of the second chamber, both sides of the second chamber are respectively connected with the channels on the side of the first chamber, and a proportional control valve for controlling the opening and closing of the channel is installed on the side of the second chamber, and the second chamber is connected with the steam output end through the channel; There are four steam output ends, two of which are used to communicate with the fixed mold cavity of the mold, and the other two steam output ends are used to communicate with the movable mold cavity of the mold; The shell is also provided with two exhaust interfaces, one of which is connected to the two steam output ends through an exhaust cavity formed on the side of the shell, and the other exhaust interface is connected to the other two steam output ends through another exhaust cavity formed on the side of the shell, and each steam output end corresponds to a proportional control valve installed on the shell and located in the exhaust cavity.

2. The central energy distributor of the molding machine according to claim 1, characterized in that: Two channels are formed on both sides of the first chamber, and each channel is equipped with a proportional control valve located on the side of the shell.

3. The central energy distributor of the molding machine according to claim 2, characterized in that: A channel is formed on both sides of the first chamber, a partition is arranged between the channels, and a proportional control valve located on the side of the shell is installed on each channel.

4. The central energy distributor of a molding machine according to any one of claims 1 to 3, characterized in that: The outer wall of the shell is provided with a mounting seat.

5. The central energy distributor of the molding machine according to claim 4, characterized in that: Both exhaust ports are connected to a muffler.

6. A molding machine, characterized in that: A central energy distributor for a molding machine as described in any one of claims 1 to 5 is installed.

7. The method for using the central energy distributor of the molding machine is characterized in that: The central energy distributor of the molding machine according to claim 5 further comprises the following steps: (1) Steam heating: according to the performance requirements of the product, the proportional control valve on the side of the first cavity corresponding to the shifting mold cavity or the proportional control valve on the side of the first cavity corresponding to the fixed mold cavity is opened, the proportional control valves on both sides of all the second cavities are closed, and the proportional control valves in all the exhaust cavities are closed, so as to heat the product in the shifting mold cavity or the product in the fixed mold cavity respectively; (2) Allow air to enter, close all proportional control valves on the side of the first chamber, close all proportional control valves in the exhaust chamber, and open the proportional control valve on the side of the second chamber; (3) Exhaust, close all the proportional control valves on the side of the first chamber, open the proportional control valve on the exhaust chamber corresponding to the steam output end according to the product situation in the fixed mold cavity or the movable mold cavity, and close the proportional control valve on the side of the second chamber.

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