Heating and temperature control structure of glue nozzle of injection molding machine
By setting up heating suite components outside the injection machine glue mouth, including heating ring and thermocouple, the problem of the temperature of the plastic raw material in the plastic pipe in the split pipe is solved. Plastic temperature and production efficiency.
Patent Information
- Application Number
- CN202420999184.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-05-09
AI Technical Summary
When used, the glue nozzles of existing injection molding machines are long, resulting in the temperature loss of plastic raw materials during transportation, which cannot meet the temperature requirements during glue injection. The uneven temperature leads to a decrease in the fluidity of plastic raw materials and is prone to accumulation.
Design a heating and temperature control structure of the injection molding machine. By setting up heating set components from the outside of the main body of the glue, including the heating ring of multiple sets in the outside of the glue pipe, one inserted between the heating ring and the glue pipe is inserted between the heating ring and the glue pipe The thermocouples realize the heating and temperature control of the glue pipe.
Through continuous and stable heating, the temperature of the plastic raw material in the rubber injection pipe is uniform and stable, avoiding the accumulation of plastic raw materials caused by decreased temperature, and increasing the collagen temperature.
Smart Images
Figure CN222407005U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of heating and temperature control, in particular to a heating and temperature control structure of a nozzle of an injection molding machine. Background Art
[0002] With the rapid development of the plastics industry, the performance and technical level of the injection molding machine as its core equipment have a vital impact on the quality and production efficiency of plastic products. The nozzle, as one of the key components of the injection molding machine, is set at the end of the injection pipe and is used to transport the diverted plastic raw materials to different positions of the template to achieve injection.
[0003] However, there are some problems in the use of the existing glue nozzle. Since the glue injection tube is long, when the plastic raw material is transported from one end of the glue injection tube to the glue nozzle, the temperature of the plastic raw material is lost during transportation, thereby failing to meet the temperature requirement during glue injection. In addition, due to the temperature drop, the temperature of the plastic raw material in the glue injection tube is uneven, the fluidity of the plastic raw material is also reduced, and it is easy to accumulate at the glue nozzle. Utility Model Content
[0004] In view of this, the utility model provides a heating and temperature control structure for a nozzle of an injection molding machine to solve the above problems.
[0005] A heating and temperature control structure for a glue nozzle of an injection molding machine, comprising a glue injection body and a heating sleeve assembly sleeved on the outside of the glue injection body. The glue injection body comprises a glue injection tube, a connecting sleeve inserted at the end of the glue injection tube, a needle valve nozzle tip inserted at the end of the connecting sleeve, a valve needle inserted in the needle valve nozzle tip, and a valve needle driving part arranged at intervals at the other end of the glue injection tube and connected to the valve needle. The heating sleeve assembly comprises a plurality of heating coils sleeved on the outside of the glue injection tube, a thermocouple arranged between the heating coil and the glue injection tube, and a shell sleeved on the outside of the heating coil. The glue injection tube and the needle valve nozzle tip are made of heat-conducting metal, and the needle valve nozzle tip is in contact with the glue injection tube.
[0006] Furthermore, the glue injection tube includes a glue injection tube body, an annular limiting portion arranged around the outer wall of the glue injection tube body, a first step and a second step respectively opened on the inner wall of the glue injection tube body, and the second step is opened at the end of the first step.
[0007] Furthermore, the connecting sleeve includes a connecting sleeve body and a convex ring arranged on the outer side wall of the connecting sleeve body, the outer side wall of the connecting sleeve body is tightly connected to the second step, and one side of the convex ring is tightly connected to the glue injection tube body.
[0008] Furthermore, the needle valve tip includes a needle valve tip body and a valve hole arranged at the end of the needle valve tip body, and the outer side wall of the needle valve tip body is tightly connected to the connecting sleeve body and the first step respectively.
[0009] Furthermore, the heating coils are arranged at intervals and are evenly distributed outside the glue injection tube.
[0010] Furthermore, the valve needle driving part is a pneumatic cylinder or a hydraulic cylinder.
[0011] Furthermore, one end of the shell is covered on the outside of the valve needle mouth tip body.
[0012] Compared with the prior art, the heating and temperature control structure of the injection molding machine nozzle provided by the utility model realizes the heating of the injection main body by arranging a heating sleeve assembly on the outside of the injection main body, and the heating sleeve assembly includes a plurality of heating coils sleeved on the outside of the injection tube, and a thermocouple inserted between the heating coil and the injection tube, and the heating coils are evenly arranged on the outside of the injection tube, so as to continuously and stably heat the injection tube, so that the temperature of the plastic raw material in the injection tube is uniform and stable, and the thermocouple is used to detect the temperature of the heating coil and control the heating of the heating coil to achieve temperature control, and the injection main body also includes a needle valve nozzle tip arranged at the end of the injection tube, the needle valve nozzle tip is tightly connected to the injection tube, and the needle valve nozzle tip and the injection tube are respectively made of heat-conducting metals, so that the needle valve nozzle tip can conduct the heat of the injection tube, heat the plastic raw material before discharging, so as to avoid the plastic raw material from accumulating at the needle valve nozzle tip due to temperature reduction, and also can improve the discharging temperature. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a schematic diagram of the heating and temperature control structure of the injection molding machine nozzle.
[0014] Figure 2 for Figure 1 A cross-sectional view of the heating and temperature control structure of the injection molding machine nozzle.
[0015] Figure 3 for Figure 1 A partial enlarged view of the heating and temperature control structure of the injection molding machine nozzle at point A. DETAILED DESCRIPTION
[0016] The following is a further detailed description of the specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the protection scope of the present invention.
[0017] like Figures 1 to 3As shown, it is a schematic diagram of the structure of the heating and temperature control structure of the injection molding machine nozzle provided by the utility model. The heating and temperature control structure of the injection molding machine nozzle includes a glue injection body 10, and a heating sleeve assembly 20 sleeved on the outside of the glue injection body 10. It also includes some other functional modules, such as a power distribution assembly arranged on one side of the heating sleeve assembly 20 and used to provide power to the heating sleeve assembly 20, etc., which should be well known to those skilled in the art and will not be described in detail one by one here.
[0018] The glue injection body 10 includes a glue injection tube 11, a connecting sleeve 12 inserted at the end of the glue injection tube 11, a needle valve nozzle tip 13 inserted at the end of the connecting sleeve 12, a valve needle 14 inserted in the needle valve nozzle tip 13, and a valve needle driving part 15 arranged at the other end of the glue injection tube 11 and used to drive the valve needle 14 to move.
[0019] It should be noted that the injection molding machine includes a support plate 40 for mounting the injection body 10, a diverter plate 50 disposed on the top of the support plate 40, and a code template 30 disposed on the top of the diverter plate 50. The support plate 40 is provided with a plurality of installation openings 41 for facilitating the passage of the injection body 10. The diverter plate 50 is used to divert the plastic raw materials, and the support plate 40 and the code template 30 are respectively used to mount corresponding structures. Since the support plate 40, the diverter plate 50 and the code template 30 are respectively prior arts well known to those skilled in the art and are not the main contents of this embodiment, they are not described in detail here.
[0020] The top of the glue injection tube 11 is connected to the diverter plate of the injection molding machine, and the plastic raw material diverted by the diverter plate will flow into the glue injection tube 11 from the top of the glue injection tube 11 .
[0021] The injection tube 11 includes a tube body 111 , an annular limiting portion 112 arranged around the outer wall of the tube body 111 , a first step 113 and a second step 114 respectively arranged on the inner wall of the tube body 111 .
[0022] The material of the glue injection tube body 111 is a heat-conducting metal, such as iron alloy or aluminum alloy, so as to achieve a good heat-conducting effect.
[0023] The annular limiting portion 112 is located at the top of the side wall of the glue injection tube body 111 , so that when the glue injection tube 11 is inserted into the installation opening 41 , the annular limiting portion 111 cannot pass through the installation opening 41 to make the glue injection tube 11 stuck on the support plate 40 .
[0024] The second step 114 is provided at the end of the first step 113, so as to form two steps on the inner wall of the end of the injection tube body 111, so as to facilitate the insertion of the connecting sleeve 12 and the needle valve nozzle tip 13. The first step 113 is used for bonding and connecting with the following nozzle. The second step 114 is used for bonding and connecting with the following connecting sleeve body 12. The first step 113 and the second step 114 are continuous steps, and the second step 114 is closer to the end of the injection tube body 111.
[0025] The connecting sleeve 12 includes a connecting sleeve body 121 and a convex ring 122 arranged around the outer wall of the connecting sleeve body 12. The outer wall of the connecting sleeve body 121 is in close contact with the second step 114 and bonded by glue, and one side of the convex ring 122 is in close contact with the end of the injection tube body 11 and bonded by glue, so that the connecting sleeve body 121 is fixedly inserted at the end of the injection tube body 11.
[0026] The needle valve tip 13 includes a cylindrical needle valve tip body 131 and a valve hole 132 arranged at the end of the needle valve tip body 131. The outer wall of the needle valve tip body 131 is respectively in close contact with the first step 113 and the connecting sleeve 12 and bonded by glue to be fixed at the end of the injection tube 11. The needle valve tip 13 is made of heat-conducting metal, such as iron alloy, aluminum alloy, etc., so that it can conduct heat on the injection tube body 111 to heat the plastic raw material before it flows out. The valve hole 132 is used for the valve needle 14 described below to pass through.
[0027] The valve needle 14 is vertically inserted in the injection tube body 111, and the axis of the valve needle 14 coincides with the axis of the injection tube body 111. The end of the valve needle 14 passes through the valve hole 132 to block the valve hole 132.
[0028] The valve needle driving part 15 may be a cylinder or a hydraulic cylinder. The valve needle driving part 15 is disposed on the code template 30. One end of the valve needle 14 passes through the diverter plate 50 to be connected to the valve needle driving part 15, and the driving end of the valve needle driving part 15 is controlled to approach or move away from the injection body 10, thereby driving the valve needle 14 to move up and down to selectively block or open the valve hole 132.
[0029] The heating sleeve assembly 20 includes a plurality of heating coils 21 sleeved on the outside of the injection tube 11 , a thermocouple 22 inserted between the heating coils 21 and the injection tube 11 , and a housing 23 sleeved on the outside of all the heating coils 21 .
[0030] The heating coils 21 are arranged at intervals and distributed outside the injection tube 11. The heating coils 21 are used to provide heat to heat the injection tube 11. A temperature control component for controlling the temperature of the heating coil 21 is provided on one side of the heating coil 21. The amount of heat emitted by the heating coil 21 can be controlled by the temperature control component to control the temperature of the plastic raw material in the injection tube 11. The temperature control component is not marked in the figure.
[0031] The thermocouple 22 is used to detect the temperature between the heating ring 21 and the glue injection tube 11 .
[0032] The housing 23 is used to protect and position the heating ring 21. The housing 23 can also reduce heat loss and improve the heating effect. One end of the housing 23 is covered on the outside of the needle valve tip body 131 to reduce the heat dissipation of the needle valve tip body 131.
[0033] Compared with the prior art, the heating and temperature control structure of the injection molding machine nozzle provided by the utility model realizes heating of the injection main body 10 by arranging a heating sleeve assembly 20 on the outside of the injection main body 10, and the heating sleeve assembly 20 includes a plurality of heating coils 21 sleeved on the outside of the injection tube 11, and a thermocouple 22 inserted between the heating coils 21 and the injection tube 11, and the heating coils 21 are evenly arranged on the outside of the injection tube 11, so that the injection tube 11 is heated continuously and stably, so that the temperature of the plastic raw material in the injection tube 11 is uniform and stable. The thermocouple 22 is used to detect the temperature of the heating ring 21 so as to control the heating of the heating ring 21 to achieve temperature control. The injection body 10 also includes a needle valve nozzle 13 arranged at the end of the injection tube 11. The needle valve nozzle 13 is tightly connected to the injection tube 11. The needle valve nozzle 13 and the injection tube 11 are respectively made of heat-conducting metals, so that the needle valve nozzle 13 can conduct the heat of the injection tube 11, heat the plastic raw material before discharging, so as to avoid the plastic raw material from accumulating at the needle valve nozzle 13 due to the decrease in temperature, and also improve the discharging temperature.
[0034] The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modification, equivalent substitution or improvement within the spirit of the present invention are included in the scope of the claims of the present invention.
Claims
1. A heating and temperature control structure for an injection molding machine nozzle, characterized in that: The heating and temperature control structure of the injection molding machine nozzle includes a glue injection body and a heating sleeve assembly sleeved on the outside of the glue injection body. The glue injection body includes a glue injection tube, a connecting sleeve inserted at the end of the glue injection tube, a needle valve nozzle tip inserted at the end of the connecting sleeve, a valve needle inserted in the needle valve nozzle tip, and a valve needle drive part arranged at intervals at the other end of the glue injection tube and connected to the valve needle. The heating sleeve assembly includes a plurality of heating coils sleeved on the outside of the glue injection tube, a thermocouple arranged between the heating coil and the glue injection tube, and a shell sleeved on the outside of the heating coil. The glue injection tube and the needle valve nozzle tip are made of heat-conducting metal, and the needle valve nozzle tip is in contact with the glue injection tube.
2. The heating and temperature control structure of the nozzle of an injection molding machine according to claim 1, characterized in that: The glue injection tube includes a glue injection tube body, an annular limiting portion arranged around the outer wall of the glue injection tube body, a first step and a second step respectively opened on the inner wall of the glue injection tube body, and the second step is opened at the end of the first step.
3. The heating and temperature control structure of the nozzle of an injection molding machine as claimed in claim 2, characterized in that: The connecting sleeve includes a connecting sleeve body and a convex ring arranged on the outer side wall of the connecting sleeve body. The outer side wall of the connecting sleeve body is tightly connected to the second step, and one side wall of the convex ring is tightly connected to the glue injection tube body.
4. The heating and temperature control structure of the nozzle of an injection molding machine according to claim 2, characterized in that: The needle valve tip comprises a needle valve tip body and a valve hole arranged at the end of the needle valve tip body. The outer side wall of the needle valve tip body is tightly connected to the connecting sleeve body and the first step respectively.
5. The heating and temperature control structure of the injection molding machine nozzle according to claim 1, characterized in that: The heating coils are arranged at intervals and are evenly distributed outside the glue injection tube.
6. The heating and temperature control structure of the nozzle of an injection molding machine according to claim 1, characterized in that: The valve needle driving part is a pneumatic cylinder or a hydraulic cylinder.
7. The heating and temperature control structure of the nozzle of an injection molding machine according to claim 1, characterized in that: One end of the shell is covered on the outside of the valve needle mouth tip body.