Sectional type heat energy recovery device of injection molding machine
By designing a segmented thermal energy recovery device in the injection molding machine, and using the thermal insulation shell and the thermal energy recovery main pipe to collect waste heat, the problem of insufficient utilization of thermal energy in the injection molding machine is solved, efficient preheating of plastic particles is achieved, and energy utilization efficiency is improved.
Patent Information
- Application Number
- CN202421436769.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-06-21
AI Technical Summary
The heat energy generated by the injection molding machine during the plastic heating and plasticization process is not fully utilized, resulting in waste of resources.
A sectional thermal energy recovery device of injection molding machine is designed. By providing a thermal insulation shell layer and a thermal energy recovery main pipe on the melt plasticized parts, the generated waste heat is collected into a hopper for preheating plastic particles.
It effectively utilizes the waste heat generated in the injection molding machine, preheats plastic particles in advance, improves the plastic heating efficiency and reduces energy consumption and resource waste.
Smart Images
Figure CN222886178U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a segmented heat energy recovery device for an injection molding machine, and particularly to a segmented heat energy recovery device for an injection molding machine with a compact structure and waste heat recovery and utilization. Background Art
[0002] An injection molding machine, also known as an injection molding machine or an injection machine, is the main molding equipment for making various shaped plastic products from thermoplastic or thermosetting plastics using plastic molding dies. The injection system is one of the most important components of an injection molding machine, and generally has three main forms: plunger type, screw type, and screw pre-plasticizing plunger injection type. The most widely used is the screw type. Its function is that in one cycle of the injection molding machine, a certain amount of plastic can be heated and plasticized within a specified time, and then injected into the mold cavity through the screw under a certain pressure and speed. After the injection is completed, the molten material injected into the mold cavity is kept in shape.
[0003] A large amount of heat energy is generated during the plastic heating and plasticizing process. How to make full use of this part of heat energy is an urgent problem to be solved by the present utility model. Summary of the Utility Model
[0004] The technical problem to be solved by the present utility model is to provide a segmented heat energy recovery device for an injection molding machine, which has the characteristics of a compact structure and waste heat recovery and utilization.
[0005] To solve the above technical problem, the technical solution of the present utility model is: a segmented heat energy recovery device for an injection molding machine, and its innovation lies in: the segmented heat energy recovery device for an injection molding machine is used in combination with an injection molding machine. The injection molding machine successively includes a driving mechanism for injection from back to front, a plasticizing power device driven by the driving mechanism for injection to move back and forth, and a melting and plasticizing component connected to the plasticizing power device. A hollow injection channel located at the core of the melting and plasticizing component and an injection screw located in the injection channel are provided on the melting and plasticizing component. The injection screw is connected to the plasticizing power device. A particle feed port for adding plastic particles is provided on the melting and plasticizing component and penetrates through to the injection channel where the injection screw is located. The central axis of the injection screw, the central axis of the transmission shaft of the plasticizing power device, and the central axis of the driving mechanism for injection are located on the same straight line;
[0006] A heat preservation shell layer is wrapped around the melting and plasticizing component along the length direction of the melting and plasticizing component for one week. A hollow chamber is provided inside the heat preservation shell layer. A total heat energy recovery pipe communicated with the hollow chamber is provided on the heat preservation shell layer. The total heat energy recovery pipe is connected to a hopper installed on the particle feed port;
[0007] Among them, at least two insulation shell layer units are provided on the insulation shell layer distributed along the length direction of the melt plasticizing component, and corresponding hollow chambers are provided on the insulation shell layer units.
[0008] Preferably, insulation shell layer units are provided on the insulation shell layer distributed along the length direction of the melt plasticizing component, which sequentially include a first insulation shell layer area, a second insulation shell layer area, a third insulation shell layer area, and a fourth insulation shell layer area from the advancing direction of the molten particles. The recoverable temperature in the first insulation shell layer area is less than the recoverable temperature in the second insulation shell layer area, the recoverable temperature in the second insulation shell layer area is less than the recoverable temperature in the third insulation shell layer area, and the recoverable temperature in the third insulation shell layer area is less than the recoverable temperature in the fourth insulation shell layer area;
[0009] The first insulation shell layer area, the second insulation shell layer area, the third insulation shell layer area, and the fourth insulation shell layer area are respectively connected to the hopper through a first heat energy recovery pipe, a second heat energy recovery pipe, a third heat energy recovery pipe, and a fourth heat energy recovery pipe via a heat energy recovery main pipe.
[0010] Preferably, a first thermometer, a second thermometer, a third thermometer, and a fourth thermometer extending into the first insulation shell layer area, the second insulation shell layer area, the third insulation shell layer area, and the fourth insulation shell layer area are respectively provided on the first insulation shell layer area, the second insulation shell layer area, the third insulation shell layer area, and the fourth insulation shell layer area, and the first thermometer, the second thermometer, the third thermometer, and the fourth thermometer are respectively connected to a control panel on the hopper through signal feedback.
[0011] Preferably, a thermometer for particle detection that is signal feedback connected to the control panel is provided in the hopper.
[0012] Preferably, a first partition board, a second partition board, and a third partition board are respectively provided between the first insulation shell layer area and the second insulation shell layer area, between the second insulation shell layer area and the third insulation shell layer area, and between the third insulation shell layer area and the fourth insulation shell layer area.
[0013] Preferably, the first partition board, the second partition board, and the third partition board are of a single-layer non-insulating structure or a double-layer insulating structure.
[0014] Preferably, an air inlet pipe communicating with the hollow chamber is provided on the insulation shell layer, and an air inlet valve for communicating or closing the air inlet pipe is provided on the air inlet pipe.
[0015] Preferably, the insulation shell layer is formed by joining two semi-hollow cylinders, and the air inlet pipe is provided on one of the semi-hollow cylinders.
[0016] The advantages of the present utility model are as follows: By adopting the above structure, the heat insulation shell layer wrapped on the sol plasticizing component is connected to the hopper installed on the particle feeding port through the total heat energy recovery pipe, so that the waste heat generated in the particle plasticizing process is collected into the hopper through the total heat energy recovery pipe, and the plastic particles placed in the hopper are preheated / dehumidified in advance. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The present utility model will be further described in detail below in conjunction with the drawings and specific embodiments.
[0018] Figure 1 is a perspective view of the first angle of a segmented heat energy recovery device for an injection molding machine of the present utility model.
[0019] Figure 2 is a perspective view of the second angle of a segmented heat energy recovery device for an injection molding machine of the present utility model.
[0020] Figure 3 is a structural schematic diagram of a segmented heat energy recovery device for an injection molding machine of the present utility model.
[0021] Figure 4 is a structural schematic diagram of a segmented heat energy recovery device for an injection molding machine of the present utility model including the heat insulation shell layer part.
[0022] Figure 5 is a structural schematic diagram of the first heat insulation shell layer area in a segmented heat energy recovery device for an injection molding machine of the present utility model
[0023] In the figure: 1 - driving mechanism for injection, 2 - sol power device, 3 - melt plasticizing component, 4 - particle feeding port, 5 - total heat energy recovery pipe, 61 - first heat insulation shell layer area, 62 - second heat insulation shell layer area, 63 - third heat insulation shell layer area, 64 - fourth heat insulation shell layer area, 71 - first heat energy recovery pipe, 72 - second heat energy recovery pipe, 73 - third heat energy recovery pipe, 74 - fourth heat energy recovery pipe, 8 - hopper, 9 - control panel, 10 - hollow cavity, 11 - air inlet pipe. SPECIFIC EMBODIMENTS
[0024] The segmented heat energy recovery device of the injection molding machine of the present utility model is used in combination with an injection molding machine. The injection molding machine sequentially includes a driving mechanism 1 for injection from back to front, a plasticizing power device 2 driven by the driving mechanism for injection to move back and forth, and a melting and plasticizing component 3 connected to the plasticizing power device. The melting and plasticizing component is provided with a hollow injection channel located at the core of the melting and plasticizing component and an injection screw located in the injection channel. The injection screw is connected to the plasticizing power device. The melting and plasticizing component is provided with a particle feed port 4 penetrating into the injection channel where the injection screw is located for adding plastic particles. The central axis of the injection screw, the central axis of the transmission shaft of the plasticizing power device, and the central axis of the driving mechanism for injection are located on the same straight line.
[0025] A heat preservation shell layer is wrapped around the melting and plasticizing component along the length direction of the melting and plasticizing component for one week. A hollow chamber 10 is arranged in the heat preservation shell layer. The heat preservation shell layer is provided with a total heat energy recovery pipe 5 communicated with the hollow chamber. The total heat energy recovery pipe is connected to a hopper 8 installed on the particle feed port. At least two heat preservation shell layer units are arranged on the melting and plasticizing component along the length direction of the melting and plasticizing component, and corresponding hollow chambers are arranged on the heat preservation shell units.
[0026] By adopting the above structure, the heat energy recovery pipe is used to connect the heat preservation shell layer wrapped on the plasticizing component and the hopper installed on the particle feed port, so as to collect the waste heat generated in the particle plasticizing process into the hopper through the total heat energy recovery pipe, and pre-heat / dehumidify the plastic particles placed in the hopper in advance.
[0027] Specifically: the heat preservation shell layer units arranged on the melting and plasticizing component along the length direction of the melting and plasticizing component sequentially include a first heat preservation shell layer area 61, a second heat preservation shell layer area 62, a third heat preservation shell layer area 63, and a fourth heat preservation shell layer area 64 from the advancing direction of the molten particles. The recoverable temperature in the first heat preservation shell layer area is less than the recoverable temperature in the second heat preservation shell layer area, the recoverable temperature in the second heat preservation shell layer area is less than the recoverable temperature in the third heat preservation shell layer area, and the recoverable temperature in the third heat preservation shell layer area is less than the recoverable temperature in the fourth heat preservation shell layer area. The first heat preservation shell layer area, the second heat preservation shell layer area, the third heat preservation shell layer area, and the fourth heat preservation shell layer area are respectively connected to the hopper 8 through the first heat energy recovery pipe 71, the second heat energy recovery pipe 72, the third heat energy recovery pipe 73, and the fourth heat energy recovery pipe 74 through the total heat energy recovery pipe.
[0028] In order to facilitate the real-time monitoring of recoverable heat, a first thermometer, a second thermometer, a third thermometer, and a fourth thermometer extending into the first thermal insulation shell area, the second thermal insulation shell area, the third thermal insulation shell area, and the fourth thermal insulation shell area are respectively arranged on the first thermal insulation shell area, the second thermal insulation shell area, the third thermal insulation shell area, and the fourth thermal insulation shell area. The first thermometer, the second thermometer, the third thermometer, and the fourth thermometer are respectively connected to a control panel 9 on the hopper through signal feedback.
[0029] In order to detect the temperature of preheating in the hopper 8 in real time, a thermometer for particle detection that is signal-fed back to the control panel is arranged in the hopper.
[0030] In order to avoid unnecessary heat energy loss during heat energy recovery, a first partition board, a second partition board, and a third partition board are respectively arranged between the first thermal insulation shell area and the second thermal insulation shell area, between the second thermal insulation shell area and the third thermal insulation shell area, and between the third thermal insulation shell area and the fourth thermal insulation shell area. The first partition board, the second partition board, and the third partition board are of a single-layer non-insulating structure or a double-layer insulating structure.
[0031] An air inlet pipe 11 communicating with the hollow chamber is arranged on the thermal insulation shell of the present utility model, and an air inlet valve for communicating or closing the air inlet pipe is arranged on the air inlet pipe 11. For the convenience of assembly and transportation, the thermal insulation shell is formed by the butting of two semi-hollow cylinders, and the air inlet pipe is arranged on one of the semi-hollow cylinders.
[0032] The above embodiments are merely descriptions made to clearly illustrate the present utility model, rather than limitations on the implementation manners. For those skilled in the art, other different forms of changes or modifications can be made based on the above descriptions. It is not necessary and impossible to enumerate all the implementation manners here, and the obvious changes or modifications derived therefrom still fall within the protection scope of the present utility model.
Claims
1. A sectional heat recovery device for an injection molding machine, characterized in that: The sectional heat recovery device for the injection molding machine is used in combination with the injection molding machine. The injection molding machine includes, from back to front, a driving mechanism for injection, a sol power device driven by the driving mechanism for injection to move forward and backward, and a melt plasticizing component connected to the sol power device. The melt plasticizing component is provided with a hollow injection channel located at the core of the melt plasticizing component and an injection screw located in the injection channel. The injection screw is connected to the sol power device. The melt plasticizing component is provided with a particle feed port for adding plastic particles and penetrating to the injection channel where the injection screw is located; the central axis of the injection screw, the central axis of the transmission shaft of the sol power device and the central axis of the driving mechanism for injection are located on the same straight line; The melt-plasticizing component is covered with a heat-insulating shell layer around the melt-plasticizing component along the length direction of the melt-plasticizing component, a hollow chamber is arranged in the heat-insulating shell layer, a heat energy recovery main pipe connected to the hollow chamber is arranged on the heat-insulating shell layer, and the heat energy recovery main pipe is connected to a hopper installed on the particle feeding port; Wherein, the heat-insulating shell layer arranged on the melt-adhesive plasticizing component and distributed along the length direction of the melt-adhesive plasticizing component is provided with at least two heat-insulating shell layer units, and the heat-insulating shell layer units are provided with corresponding hollow chambers.
2. A sectional heat recovery device for an injection molding machine as claimed in claim 1, characterized in that: The heat-insulating shell layer arranged on the melt-plasticizing component and distributed along the length direction of the melt-plasticizing component is provided with the heat-insulating shell layer unit, and includes the first heat-insulating shell layer area, the second heat-insulating shell layer area, the third heat-insulating shell layer area, and the fourth heat-insulating shell layer area in sequence from the advancing direction of the molten particles, the recyclable temperature in the first heat-insulating shell layer area is lower than the recyclable temperature in the second heat-insulating shell layer area, the recyclable temperature in the second heat-insulating shell layer area is lower than the recyclable temperature in the third heat-insulating shell layer area, and the recyclable temperature in the third heat-insulating shell layer area is lower than the recyclable temperature in the fourth heat-insulating shell layer area; The first insulation shell area, the second insulation shell area, the third insulation shell area and the fourth insulation shell area are respectively connected to the hopper through a heat recovery main pipe through a first heat recovery pipe, a second heat recovery pipe, a third heat recovery pipe and a fourth heat recovery pipe.
3. A sectional heat recovery device for an injection molding machine as claimed in claim 2, characterized in that: The first insulation shell area, the second insulation shell area, the third insulation shell area, and the fourth insulation shell area are respectively provided with a first thermometer, a second thermometer, a third thermometer, and a fourth thermometer extending into the first insulation shell area, the second insulation shell area, the third insulation shell area, and the fourth insulation shell area. The first thermometer, the second thermometer, the third thermometer, and the fourth thermometer are respectively connected to the control panel on the hopper for signal feedback.
4. A sectional heat recovery device for an injection molding machine as claimed in claim 3, characterized in that: A particle detection thermometer is arranged in the hopper and provides signal feedback to the control panel.
5. A sectional heat recovery device for an injection molding machine as claimed in claim 2, characterized in that: A first partition, a second partition and a third partition are respectively arranged between the first insulation shell area and the second insulation shell area, between the second insulation shell area and the third insulation shell area, and between the third insulation shell area and the fourth insulation shell area.
6. A sectional heat recovery device for an injection molding machine as claimed in claim 5, characterized in that: The first partition, the second partition and the third partition are single-layer non-insulating structures or double-layer insulating structures.
7. The sectional heat recovery device for an injection molding machine as claimed in claim 1, characterized in that: The heat-insulating shell layer is provided with an air inlet pipe connected to the hollow chamber, and the air inlet pipe is provided with an air inlet valve for connecting to or closing the air inlet pipe.
8. A sectional heat recovery device for an injection molding machine as claimed in claim 7, characterized in that: The heat-insulating shell layer is formed by joining two semi-hollow cylinders, and the air inlet pipe is arranged on one of the semi-hollow cylinders.