Injection molding nozzle assembly and injection molding equipment

Abstract

The injection molding nozzle assembly comprises a rack and a nozzle assembly which are arranged in the vertical direction, the rack is provided with a moving seat configured to move in the length direction of the rack, the nozzle assembly comprises a heating material barrel, an injection molding gun and a heating nozzle, the injection molding gun is coaxially sleeved with the heating material barrel, and the heating nozzle is arranged in the injection molding gun. An elastic heat conduction piece is coaxially arranged between the heating material barrel and the injection molding gun, the heating nozzle comprises a nozzle piece and a heating sleeve, the nozzle piece is communicated with the injection molding gun and is coaxial with the injection molding gun, the heating sleeve is coaxially arranged outside the nozzle piece in a sleeving mode, and the upper end of the heating sleeve is embedded into the heating material barrel and is in sliding connection with the heating material barrel. A sliding gap exists between the heating sleeve and the heating charging barrel, an abutting ring is arranged on the side, close to the heating charging barrel, of the heating sleeve, the abutting ring is close to the heating charging barrel and abuts against the elastic heat conduction piece to control deformation of the elastic heat conduction piece, and a plurality of heat conduction rods configured to conduct out heat of the heating charging barrel are arranged at one end of the heating charging barrel.

Description

Technical Field

[0001] The present application relates to the technical field of injection molding equipment, and in particular to an injection molding nozzle assembly and injection molding equipment. Background Art

[0002] Injection molding is a manufacturing process widely used in plastic processing. The plastic material is heated to a molten state, then injected into a mold, and cooled to form the desired plastic product. The general injection molding process includes heating and melting plastic particles, injection molding, cooling and solidification, and mold opening and removal.

[0003] The barrel and nozzle of the injection molding equipment are usually heated separately using two relatively independent sets of heating equipment. Generally, the barrel is heated first to heat the plastic particles inside the barrel to a molten state, and then the nozzle is heated to heat the remaining plastic in the nozzle to a molten state to avoid nozzle clogging and affecting the injection molding process.

[0004] However, with the above heating method, once defects such as dents and scratches appear on the outside of the injection molding gun, a gap will exist between the injection molding gun and the heating element, thereby affecting the heating effect of the plastic particles inside the barrel, resulting in uneven heating, thereby increasing the time and energy consumption for heating the plastic particles, and even posing a risk of blockage. Summary of the Invention

[0005] The present application provides an injection molding nozzle assembly and an injection molding device, which can solve the problem of uneven heating of plastic particles inside the injection molding gun when shape defects occur on the outside of the injection molding gun.

[0006] The technical solution of the present application is as follows: an injection molding nozzle assembly, comprising: A frame arranged in a vertical direction, wherein the frame is provided with a movable seat configured to move along the length direction of the frame; The nozzle assembly comprises: a heating barrel, an injection molding gun and a heating nozzle, wherein the heating barrel is coaxially sleeved on the outside of the injection molding gun, and a coaxially arranged elastic heat conducting member is provided between the heating barrel and the injection molding gun; The heating nozzle includes a nozzle member and a heating sleeve, the nozzle member is communicated with the injection molding gun and is coaxial with the injection molding gun, the heating sleeve is coaxially sleeved on the outside of the nozzle member, the upper end of the heating sleeve is embedded in the heating barrel and is slidably connected to the heating barrel, a sliding gap exists between the heating sleeve and the heating barrel, and a resistance ring is provided on the side of the heating sleeve close to the heating barrel, the resistance ring is close to the heating barrel and abuts against the elastic heat conductive member to control the deformation of the elastic heat conductive member; One end of the heating barrel is provided with a plurality of heat-conducting rods configured to conduct heat of the heating barrel, and one end of the heat-conducting member extends into the interior of the heating jacket to preheat the heating jacket.

[0007] By adopting the above solution, a heating sleeve that can slide up and down is provided on the outside of the nozzle part, and an elastic heat-conducting part is provided between the heating barrel and the injection molding gun. Before injection molding is required, the heating sleeve is moved onto the injection mold and abutted against the injection hole of the injection mold, so that the heating sleeve outside the nozzle part retracts into the sliding gap, and the elastic heat-conducting part is abutted by the abutting ring, so that the elastic heat-conducting part can be deformed due to being squeezed, thereby filling the gap between the injection molding gun and the heating sleeve, so that the heat generated by the heating sleeve can be well transferred to the injection molding gun, thereby improving the heating uniformity of the injection molding gun. At the same time, the heat generated by the heating barrel is introduced into the interior of the heating sleeve through the heat-conducting part, so that the heating sleeve can be preheated, thereby shortening the time for subsequent heating of the nozzle part. In addition, the injection molding gun is arranged inside the heating barrel to avoid the outer wall of the injection molding gun being affected by environmental factors and causing shape defects during the injection molding process. At the same time, a heating sleeve is arranged outside the nozzle part. When injection molding is not required, the heating sleeve will pop out due to the elastic force of the elastic heat-conducting part and protect the nozzle part.

[0008] In one embodiment of the present application, the heating barrel comprises: a barrel body, the barrel body being assembled on the movable seat; A ceramic heating element, comprising a ceramic tube and a heating wire, wherein a spiral channel extending along the length of the ceramic tube is provided inside the ceramic tube, the heating wire is spirally arranged inside the spiral channel, and the ceramic tube is coaxially assembled on the inner wall of the barrel body; A heat-insulating plug is embedded in the inner wall of the lower end of the barrel body, and the injection molding gun is coaxially assembled inside the ceramic tube. One end of the injection molding gun passes through the heat-insulating plug and extends to the outside until it is connected to the nozzle part. The elastic heat-conducting part is arranged between the ceramic heating part and the injection molding gun.

[0009] By adopting the above scheme, by setting up a ceramic tube and a heating wire, before injection molding is required, the heat generated by the heating wire is evenly transferred to the inside of the injection molding gun through the ceramic heating element, thereby achieving uniform heating of the plastic particles inside the injection molding gun. At the same time, an insulating plug is set to reduce heat loss when heating the plastic particles, further improving the thermal insulation performance of the heating device.

[0010] In one embodiment of the present application, an annular groove is provided at one end of the thermal insulation plug close to the heating nozzle, and the heating sleeve is slidably assembled inside the annular groove along the vertical direction, and the sliding gap is formed between the inner wall of the top end of the annular groove and the end face of the heating sleeve. The interference ring is coaxially arranged on the end face of the heating sleeve, and one end of the interference ring extends between the thermal insulation plug and the injection molding gun, and interferes with the elastic heat conductor.

[0011] By adopting the above solution and setting the annular slide groove, the heating sleeve will automatically pop out under the elastic force of the elastic heat-conducting part without the need for injection molding, and cover the outside of the nozzle part to protect the nozzle part from impact.

[0012] In one embodiment of the present application, an annular cavity is provided inside the heating sleeve, and a heat-conducting liquid is provided inside the annular cavity. A plurality of circular through holes are provided at an upper end of the heating sleeve along its own circumferential intervals. One end of the ceramic heating element close to the thermal insulation plug is fixedly connected to a plurality of circumferentially spaced heat-conducting rods. One end of the heat-conducting rod passes through the thermal insulation plug and is slidably sealed with the circular through holes until it extends to the inside of the annular cavity. A plurality of electric heating elements are provided at an outer wall of the heating sleeve along its own circumferential intervals.

[0013] By adopting the above solution, an electric heating element is arranged on the outside of the heating sleeve. When the plastic solid inside the nozzle part is heated, the heat of the electric heating element can be transferred to the heat-conducting fluid, and the heat-conducting fluid is used to achieve uniform heating of the nozzle part. At the same time, the heat-conducting rod can conduct part of the heat generated by the heating barrel into the heat-conducting fluid, so as to preheat the heat-conducting fluid in advance, thereby reducing the time and energy consumption for heating the heat-conducting fluid. In addition, when the nozzle part is subjected to an external impact, the heat-conducting fluid inside the heating sleeve oscillates inside the heating sleeve due to the impact, thereby being able to buffer part of the impact on the heating sleeve itself.

[0014] In one embodiment of the present application, the rack further includes: A base, wherein the base is provided with a guide rail extending in a vertical direction, the movable seat is slidably assembled on the guide rail, and the base is provided with a circular through hole configured to allow the nozzle assembly to pass through; A cylinder is assembled on the base, and a driving shaft of the cylinder is connected and fixed to the movable seat.

[0015] By adopting the above solution, when injection molding is required, the cylinder is used to drive the movable seat to move up and down along the guide rail, so that the nozzle assembly on the movable seat can be moved down to the injection mold. By controlling the stroke of the cylinder, the heat-conducting sleeve outside the nozzle part is retracted into the sliding gap, thereby completing the injection molding process.

[0016] In one embodiment of the present application, the injection nozzle assembly also includes a hopper, which is assembled on the movable seat. The lower end of the hopper is connected to a connecting pipe, a connecting valve is provided on the connecting pipe, and one end of the connecting pipe is connected to the injection gun. A vibration component configured to shake the material is provided inside the hopper.

[0017] By adopting the above solution, during the injection molding process, the plastic particles inside the hopper can enter the injection molding gun, thereby facilitating the plastic particles to be heated by the heating barrel. At the same time, the vibration component inside the hopper can vibrate itself with the help of the vibration of the device, driving the material inside the hopper to shake, thereby avoiding congestion of the plastic particles inside the hopper at the discharge port.

[0018] In one embodiment of the present application, the vibration component includes: A vibration plate is provided inside the hopper, the vibration plate being adapted to the shape of an inner wall of one side of the hopper, and a rubber layer being fixedly connected between the lower end of the vibration plate and the inner wall of the hopper; At least one elastic member is provided between the vibration plate and an inner wall of one side of the hopper, one end of the elastic member is connected and fixed to the inner wall of one side of the hopper, and the other end is connected and fixed to the vibration plate.

[0019] By adopting the above solution, when unloading, the elastic part on one side of the vibration plate can transmit the vibration of the device itself to the elastic part during the injection molding and movement process of the device. Under the influence of the vibration, the elastic part vibrates itself, thereby driving the vibration plate to vibrate, causing the material on one side of the vibration plate to shake continuously, avoiding the plastic particles from clogging the unloading port after being left for a long time, and also avoiding additional power input.

[0020] In one embodiment of the present application, the connecting pipe includes: a fixed tube, one end of which is connected to the injection molding gun, an annular rubber ring fixedly connected to the inner wall of the other end of the fixed tube, an annular deformation cavity being formed on the inner wall of the end of the annular rubber ring away from the injection molding gun, and the connecting valve being assembled on the fixed tube; A vibration tube, one end of which is inserted into the annular rubber ring and fixedly connected to the inner wall of the annular rubber ring, and the other end of which is communicated with the hopper.

[0021] By adopting the above solution, by arranging the fixed tube and the vibration tube, when the device is working, the plastic particles inside the hopper can be transmitted to the hopper due to the elasticity of the annular rubber ring itself and the vibration generated by the body itself when it is working. Since the hopper is assembled on the annular rubber ring, and the inner wall of one end of the annular rubber ring is provided with a closed annular deformation cavity, the hopper can continue to swing slightly when the device is working. Without affecting the discharge of materials, the plastic particles inside the hopper are always in motion, thereby avoiding congestion.

[0022] In one embodiment of the present application, a cavity is defined inside the heat-conducting rod, and a plurality of annular grooves extending along the length direction of the heat-conducting rod are defined inside the cavity.

[0023] By adopting the above solution, a plurality of annular grooves are provided on the inner wall of the cavity inside the heat-conducting rod. When one end of the heat-conducting rod is inserted into the heat-conducting liquid, the heat-conducting rod is hollow inside and provided with the annular grooves, thereby increasing the contact area between the heat-conducting rod and the heat-conducting liquid, thereby improving the efficiency of the heat-conducting rod in conducting heat into the heat-conducting liquid.

[0024] A second object of the present invention is to provide an injection molding device.

[0025] In order to achieve the above-mentioned purpose, the technical solution of the present application is as follows: an injection molding equipment, comprising: an injection molding frame, a support frame and an injection molding nozzle assembly, the number of the injection molding nozzle assemblies is set to at least two groups, the base is fixedly assembled on the upper end of the support frame, the support frame is fixedly assembled on the injection molding frame, an injection molding gap is provided between the lower end of the support frame and the injection molding frame, the injection molding gap is used to place the injection mold, a through opening coaxial with the circular through hole is provided on the support frame, and the injection mold is arranged below the through opening.

[0026] By adopting the above scheme, by setting the number of injection nozzle assemblies to at least two groups, and arranging at least two groups of injection nozzle assemblies on the same support frame, and by arranging different injection molding modules between the support frame and the injection molding machine frame, the device is equipped with injection nozzle assemblies for multiple stations, so that the entire injection molding equipment can inject multiple injection molds at the same time, thereby improving the injection molding efficiency.

[0027] In summary, this application includes at least one of the following beneficial technical effects: 1. By arranging a deformable elastic heat-conducting member between the injection molding gun and the heating barrel, and arranging a heating sleeve on the outside of the nozzle part, the heating sleeve can retract when the device is injection molding, and drive the resistance ring and the elastic heat-conducting member to squeeze each other, so that the elastic heat-conducting member can fill the gap between the injection molding gun and the heating barrel, avoiding the problem of poor thermal conductivity caused by the gap between the injection molding gun and the heating barrel after long-term use. At the same time, when injection molding is not required, the heating sleeve can provide good protection for the nozzle part.

[0028] 2. By setting up the heat-conducting rod, without affecting the injection molding work, since the heating barrel is heated first, the heat inside the heating barrel can be effectively transferred to the heat-conducting fluid inside the heating sleeve, thereby completing the preheating of the heat-conducting fluid and providing a preliminary temperature for the subsequent heating of the nozzle part, shortening the time for heating the nozzle part and reducing energy consumption. At the same time, the heat-conducting fluid set inside the heating sleeve can oscillate when the heating sleeve is impacted, thereby reducing the impact force on the heating sleeve itself and playing a partial buffering role.

[0029] 3. By setting up a hopper and utilizing the vibration of the device itself during operation, the hopper can be driven to vibrate, so that the plastic particles in the hopper can be continuously shaken inside the hopper, avoiding congestion of the plastic particles inside the hopper during material discharge, and also avoiding the need for additional power input to cause the plastic particles to continuously shake, thus ensuring energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of an injection nozzle assembly provided by the first embodiment of the present application; Figure 2 This is a front view of an injection nozzle assembly provided by the first embodiment of the present application; Figure 3 is a front view of an injection nozzle assembly provided in the first embodiment of the present application; Figure 4 This is a front cross-sectional view of a heating barrel of an injection nozzle assembly provided in the first embodiment of the present application; Figure 5 This is a front cross-sectional view of a heating sleeve of an injection nozzle assembly provided in the first embodiment of the present application; Figure 6 This is a front view of a heating sleeve for an injection nozzle assembly provided in the first embodiment of the present application; Figure 7 This is a front view of an injection nozzle assembly hopper provided in the first embodiment of the present application; Figure 8 This is a front view of a vibration plate of an injection nozzle assembly provided in the first embodiment of the present application; Figure 9 This is a front view of an injection nozzle assembly hopper provided in a second embodiment of the present application; Figure 10 This is a front view of an annular rubber ring of an injection nozzle assembly provided in the second embodiment of the present application; Figure 11 This is a front view of a heat-conducting rod of an injection nozzle assembly provided in the third embodiment of the present application; Figure 12 This is a main view of an injection molding device provided in the first embodiment of the present application.

[0031] Explanation of reference numerals: 1. frame; 11. movable seat; 12. base; 13. cylinder; 14. guide rail; 15. circular through hole; 2. nozzle assembly; 21. heating barrel; 211. heat-conducting rod; 2111. annular groove; 212. barrel body; 213. ceramic heating element; 2131. ceramic tube; 2132. heating wire; 2133. spiral channel; 214. heat-insulating plug; 2141. annular slide; 22. injection molding gun; 23. heating nozzle; 231. nozzle member; 232. heating Sleeve; 2321, annular cavity; 2322, thermal fluid; 2323, electric heating element; 233, sliding gap; 234, resistance ring; 24, elastic thermal conductor; 3, hopper; 31, connecting pipe; 311, fixing pipe; 312, annular rubber ring; 3121, annular deformation cavity; 313, vibration tube; 32, connecting valve; 33, vibration assembly; 331, vibration plate; 332, rubber layer; 333, elastic part; 4, injection molding frame; 5, support frame; 6, injection mold; 7, injection molding gap. DETAILED DESCRIPTION

[0032] The following is combined with Figures 1-12 The injection molding nozzle assembly and injection molding equipment provided in this application are further described in detail.

[0033] Example 1, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, an injection molding nozzle assembly provided in an embodiment of the present application comprises: a frame 1 and a nozzle assembly 2, the frame 1 being arranged in a vertical direction, the frame 1 being provided with a movable seat 11 configured to move along the length direction of the frame 1, the nozzle assembly 2 comprising: a heating barrel 21, an injection molding gun 22 and a heating nozzle 23, the heating barrel 21 being coaxially sleeved on the outside of the injection molding gun 22, a coaxially arranged elastic heat-conducting member 24 being provided between the heating barrel 21 and the injection molding gun 22, the heating nozzle 23 comprising a nozzle part 231 and a heating sleeve 232, the nozzle part 231 being communicated with the injection molding gun 22 and being coaxial with the injection molding gun 22, the heating sleeve 232 being coaxially sleeved on the outside of the nozzle part 231, the upper end of the heating sleeve 232 being embedded in the heating barrel 21 and being slidably connected to the heating barrel 21, and there being a sliding connection between the heating sleeve 232 and the heating barrel 21 The gap 233 is shifted, and the heating sleeve 232 is provided with a resistance ring 234 on the side close to the heating barrel 21. The resistance ring 234 is close to the heating barrel 21 and abuts the elastic heat-conducting member 24 to control the deformation of the elastic heat-conducting member 24. One end of the heating barrel 21 is provided with a plurality of heat-conducting rods 211 configured to conduct heat of the heating barrel 21. One end of the heat-conducting member extends into the interior of the heating sleeve 232 to preheat the heating sleeve 232. By arranging a heating sleeve 232 that can slide up and down on the outside of the nozzle member 231, and using the resistance ring 234 to abut the elastic heat-conducting member 24, the gap between the injection molding gun 22 and the heating barrel 21 is filled by deforming the elastic heat-conducting member 24 to improve the heating uniformity of the injection molding gun 22. At the same time, the heat generated by the heating barrel 21 can also be introduced into the interior of the heating sleeve 232 through the heat-conducting member to shorten the time for subsequent heating of the nozzle 23.

[0034] In this embodiment, the elastic heat-conducting member 24 may be a tubular heat-conducting silicone rubber.

[0035] See also Figure 5The heating barrel 21 includes: a barrel body 212 and a ceramic heating element 213. The barrel body 212 is assembled on the movable seat 11. The ceramic heating element 213 includes a ceramic tube 2131 and a heating wire 2132. A spiral channel 2133 extending along the length direction of the ceramic tube 2131 is opened inside the ceramic tube 2131. The heating wire 2132 is spirally arranged inside the spiral channel 2133. The ceramic tube 2131 is coaxially assembled on the inner wall of the barrel body 212. The inner wall of the lower end of the barrel body 212 is embedded with a ceramic tube 2131. An insulating plug 214 is provided, and the injection molding gun 22 is coaxially assembled inside the ceramic tube 2131. One end of the injection molding gun 22 passes through the insulating plug 214 and extends to the outside until it is connected to the nozzle member 231. The elastic heat-conducting member 24 is arranged between the ceramic heating member 213 and the injection molding gun 22. By arranging the ceramic tube 2131 and the heating wire 2132, the plastic particles inside the injection molding gun 22 are uniformly heated. The insulating plug 214 is used to reduce heat loss during heating, thereby improving the thermal insulation performance of the device.

[0036] Please continue reading Figure 5 The end of the heat insulation plug 214 close to the heating nozzle 23 is provided with an annular groove 2141, and the heating sleeve 232 is slidably assembled inside the annular groove 2141 along the vertical direction. The sliding gap 233 is formed between the inner wall of the top end of the annular groove 2141 and the end face of the heating sleeve 232. The end face of the heating sleeve 232 is coaxially provided with the resistance ring 234, and one end of the resistance ring 234 extends between the heat insulation plug 214 and the injection molding gun 22, and is in conflict with the elastic heat conductive part 24. By providing the annular groove 2141, the heating sleeve 232 will automatically pop out under the elastic force of the elastic heat conductive part 24, so that the device can protect the nozzle part 231 from impact when injection molding is not required.

[0037] Please continue reading Figure 5 and Figure 6The heating sleeve 232 has an annular cavity 2321 formed inside, and a heat-conducting liquid 2322 is provided inside the annular cavity 2321. The upper end of the heating sleeve 232 has a plurality of circular through holes spaced along its own annular direction. One end of the ceramic heating element 213 close to the heat-insulating plug 214 is fixedly connected to a plurality of circumferentially spaced heat-conducting rods 211. One end of the heat-conducting rod 211 passes through the heat-insulating plug 214 and slides and seals with the circular through holes until it extends to the inside of the annular cavity 2321. The outer wall of the heating sleeve 232 is provided with a plurality of electric heating elements 2323 at intervals along its circumference. By arranging the electric heating elements 2323 on the outside of the heating sleeve 232, the device can use the heat-conducting liquid 2322 to achieve uniform heating of the nozzle part 231. At the same time, the heat-conducting rod 211 can preheat the heat-conducting liquid 2322 in advance when the heating barrel 21 is heated, thereby reducing the time and energy consumption for heating the heat-conducting liquid 2322. In addition, the heat-conducting liquid 2322 can also buffer part of the impact on the heating sleeve 232 itself.

[0038] In this embodiment, the thermal fluid 2322 may be a synthetic oil or a mineral oil, such as polyetheretherketone oil, polytetrafluoroethylene oil, or transformer oil; The electric heating element 2323 may be an electric heater, which is electrically connected to an external power source. The specific electrical connection method is a conventional technical means for those skilled in the art, so it will not be described here in detail.

[0039] See also Figure 1 The frame 1 also includes: a base 12 and a cylinder 13. The base 12 is provided with a guide rail 14 extending in the vertical direction. The movable seat 11 is slidably assembled on the guide rail 14. The base 12 is provided with a circular through hole 15 configured for the nozzle assembly 2 to pass through. The cylinder 13 is assembled on the base 12. The drive shaft of the cylinder 13 is connected and fixed to the movable seat 11. When injection molding is required, the cylinder 13 is used to drive the movable seat 11 to move up and down along the guide rail 14, so that the device can complete the injection molding process conveniently and efficiently.

[0040] See also Figure 7 The injection nozzle assembly also includes a hopper 3, which is assembled on the movable seat 11. The lower end of the hopper 3 is connected to a connecting pipe 31, and a connecting valve 32 is provided on the connecting pipe 31. One end of the connecting pipe 31 is connected to the injection gun 22. A vibration component 33 configured to shake the material is provided inside the hopper 3. During the injection molding process, the plastic particles inside the hopper 3 can enter the injection molding gun 22, thereby facilitating the discharge of the plastic particles and being heated by the heating barrel 21. At the same time, the vibration component 33 inside the hopper 3 can prevent the plastic particles inside the hopper 3 from being congested at the discharge port.

[0041] See also Figure 8The cam 333 is a plastic bag that is fixed to the top of the hopper 331 so that the cam 333 can be easily moved after the cam 333 is pushed up and the cam 333 is pushed down, so that the cam 333 is easily moved after the cam 333 is pushed up and the cam 333 is easily moved.

[0042] Example 2: The structure of Example 2 is basically the same as that of Example 1, except that: See also Figure 9 and Figure 10 The connecting pipe 31 includes: a fixed pipe 311 and a vibration pipe 313. One end of the fixed pipe 311 is connected to the injection molding gun 22, and the inner wall of the other end of the fixed pipe 311 is fixedly connected to an annular rubber ring 312. The inner wall of the annular rubber ring 312 at the end away from the injection molding gun 22 is provided with an annular deformation cavity 3121. One end of the vibration pipe 313 is inserted into the annular rubber ring 312 and is fixedly connected to the inner wall of the annular rubber ring 312. The other end of the vibration pipe 313 is connected to the hopper 3. The connecting valve 32 is assembled on the fixed pipe 311. When the plastic particles inside the hopper 3 are in operation, the vibration pipe 313 has the elasticity of the annular rubber ring 312 itself, so that the hopper 3 can continue to swing slightly when the device is working, so that the plastic particles inside the hopper 3 are always in motion, thereby avoiding congestion.

[0043] Example 3: The structure of Example 3 is basically the same as that of Example 1, except that: See also Figure 11 A cavity is provided inside the heat-conducting rod 211, and a plurality of annular grooves 2111 extending along the length direction of the heat-conducting rod 211 are provided inside the cavity. By providing a plurality of annular grooves 2111 on the inner wall of the cavity inside the heat-conducting rod 211, the contact area between the heat-conducting rod 211 and the heat-conducting liquid 2322 is increased, thereby improving the efficiency of the heat-conducting rod 211 in transferring heat to the heat-conducting liquid 2322.

[0044] A second object of the present invention is to provide an injection molding device.

[0045] In order to achieve the above objectives, the technical solutions of this application are as follows: See also Figure 12 , an injection molding equipment, comprising: an injection molding machine frame 4, a support frame 5 and an injection molding nozzle assembly, the number of the injection molding nozzle assemblies is set to at least two groups, the base 12 is fixedly assembled on the upper end of the support frame 5, the support frame 5 is fixedly assembled on the injection molding machine frame 4, an injection molding gap 7 is provided between the lower end of the support frame 5 and the injection molding machine frame 4, the injection molding gap 7 is used to place the injection molding mold 6, the support frame 5 is provided with a through opening coaxial with the circular through hole 15, the injection molding mold 6 is arranged below the through opening, by setting the number of injection molding nozzle assemblies to at least two groups, the device has multiple workstations, so that the entire injection molding equipment can inject multiple injection molds 6 at the same time, thereby improving the injection molding efficiency.

[0046] In this embodiment, the number of the injection nozzle assemblies may be three, and they are distributed in a herringbone shape on the support frame 5 .

[0047] In summary, when the injection mold 6 needs to be injected, the cylinder 13 is first controlled to electrically move the movable seat 11 downward until the heating sleeve 232 retracts into the annular groove 2141. At this time, the contact ring 234 at the upper end of the heating sleeve 232 squeezes the elastic heat-conducting member 24. The elastic heat-conducting member 24 is deformed under the action of the squeezing force, so that the elastic heat-conducting member 24 fills the gap between the injection gun 22 and the heating barrel 21, and the fit is more tightly, so as to facilitate the heat of the heating barrel 21 to be introduced into the injection gun 22. During the heating stage, the heat generated by the heating barrel 21 will be partially introduced into the heat-conducting liquid 2322 inside the heating sleeve 232 through the heat-conducting rod 211 to preheat the heat-conducting liquid 2322 in advance. When the heating barrel 21 is heated to a certain degree, the electric heating element 2323 is turned on, and the electric heating element 2323 heats the preheated heat-conducting liquid 2322 until the plastic particles inside the heating barrel 21 and the originally solidified plastic in the nozzle part 231 are melted. At this time, the injection molding gun 22 can perform injection molding, which greatly improves the efficiency of injection molding and saves energy consumption.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. An injection molding nozzle assembly, characterized in that: include: A frame (1) arranged in a vertical direction, wherein the frame (1) is provided with a movable seat (11) configured to move along the length direction of the frame (1); A nozzle assembly (2), the nozzle assembly (2) comprising: a heating barrel (21), an injection molding gun (22) and a heating nozzle (23), the heating barrel (21) being coaxially sleeved on the outside of the injection molding gun (22), and a coaxially arranged elastic heat conducting member (24) being provided between the heating barrel (21) and the injection molding gun (22); The heating nozzle (23) includes a nozzle part (231) and a heating sleeve (232), the nozzle part (231) is communicated with the injection molding gun (22) and is coaxial with the injection molding gun (22), the heating sleeve (232) is coaxially sleeved on the outside of the nozzle part (231), the upper end of the heating sleeve (232) is embedded in the heating barrel (21) and is slidably connected to the heating barrel (21), a sliding gap (233) exists between the heating sleeve (232) and the heating barrel (21), and a resistance ring (234) is provided on the side of the heating sleeve (232) close to the heating barrel (21), the resistance ring (234) is close to the heating barrel (21) and resists the elastic heat-conducting member (24) to control the deformation of the elastic heat-conducting member (24); One end of the heating barrel (21) is provided with a plurality of heat-conducting rods (211) configured to conduct heat from the heating barrel (21), and one end of the heat-conducting member extends into the interior of the heating sleeve (232) to preheat the heating sleeve (232).

2. The injection molding nozzle assembly according to claim 1, characterized in that: The heating barrel (21) comprises: a barrel body (212), wherein the barrel body (212) is assembled on the movable seat (11); A ceramic heating element (213), the ceramic heating element (213) comprising a ceramic tube (2131) and a heating wire (2132), the ceramic tube (2131) being provided with a spiral channel (2133) extending along its length, the heating wire (2132) being spirally arranged inside the spiral channel (2133), and the ceramic tube (2131) being coaxially mounted on the inner wall of the barrel body (212); A heat-insulating plug (214) is embedded in the inner wall of the lower end of the barrel body (212), and the injection molding gun (22) is coaxially assembled inside the ceramic tube (2131). One end of the injection molding gun (22) passes through the heat-insulating plug (214) and extends to the outside until it is connected to the nozzle part (231). The elastic heat-conducting part (24) is arranged between the ceramic heating part (213) and the injection molding gun (22).

3. The injection molding nozzle assembly according to claim 2, characterized in that: An annular groove (2141) is provided at one end of the heat-insulating plug (214) close to the heating nozzle (23), and the heating sleeve (232) is slidably assembled inside the annular groove (2141) in the vertical direction. The sliding gap (233) is formed between the inner wall of the top end of the annular groove (2141) and the end face of the heating sleeve (232). The resistance ring (234) is coaxially arranged on the end face of the heating sleeve (232), and one end of the resistance ring (234) extends between the heat-insulating plug (214) and the injection molding gun (22), and is in mutual resistance with the elastic heat-conducting member (24).

4. The injection molding nozzle assembly according to claim 3, characterized in that: An annular cavity (2321) is provided inside the heating sleeve (232), and a heat-conducting liquid (2322) is provided inside the annular cavity (2321). A plurality of circular through holes are provided at intervals along the circumference of the upper end of the heating sleeve (232). One end of the ceramic heating element (213) close to the heat-insulating plug (214) is fixedly connected to a plurality of heat-conducting rods (211) arranged at intervals along the circumference. One end of the heat-conducting rod (211) passes through the heat-insulating plug (214) and is slidably sealed with the circular through holes until it extends to the inside of the annular cavity (2321). A plurality of electric heating elements (2323) are provided at intervals along the circumference of the outer wall of the heating sleeve (232).

5. The injection molding nozzle assembly according to claim 1, characterized in that: The frame (1) further comprises: A base (12), wherein a guide rail (14) extending in a vertical direction is provided on the base (12), the movable seat (11) is slidably assembled on the guide rail (14), and the base (12) is provided with a circular through hole (15) configured to allow the nozzle assembly (2) to pass through; A cylinder (13) is mounted on the base (12), and a drive shaft of the cylinder (13) is connected and fixed to the movable seat (11).

6. The injection molding nozzle assembly according to claim 1, characterized in that: The injection molding nozzle assembly further comprises a hopper (3), the hopper (3) being mounted on the movable seat (11), the lower end of the hopper (3) being connected to a connecting pipe (31), the connecting pipe (31) being provided with a connecting valve (32), and one end of the connecting pipe (31) being connected to the injection molding gun (22), and a vibration assembly (33) configured to shake the material being provided inside the hopper (3).

7. The injection molding nozzle assembly according to claim 6, characterized in that: The vibration component (33) includes: A vibration plate (331), the vibration plate (331) is arranged inside the hopper (3), the vibration plate (331) and the inner wall of one side of the hopper (3) are adapted to each other in shape, and a rubber layer (332) is fixedly connected between the lower end of the vibration plate (331) and the inner wall of the hopper (3); At least one elastic member (333), the elastic member (333) being arranged between the vibration plate (331) and the inner wall of one side of the hopper (3), one end of the elastic member (333) being connected and fixed to the inner wall of one side of the hopper (3), and the other end being connected and fixed to the vibration plate (331).

8. The injection molding nozzle assembly according to claim 6, characterized in that: The connecting pipe (31) comprises: A fixed tube (311), one end of the fixed tube (311) is connected to the injection molding gun (22), an annular rubber ring (312) is fixedly connected to the inner wall of the other end of the fixed tube (311), an annular deformation cavity (3121) is formed on the inner wall of the end of the annular rubber ring (312) away from the injection molding gun (22), and the communication valve (32) is assembled on the fixed tube (311); A vibration tube (313), one end of which is inserted into the annular rubber ring (312) and fixedly connected to the inner wall of the annular rubber ring (312), and the other end of which is communicated with the hopper (3).

9. The injection molding nozzle assembly according to claim 4, characterized in that: A cavity is provided inside the heat-conducting rod (211), and a plurality of annular grooves (2111) extending along the length direction of the heat-conducting rod (211) are provided inside the cavity.

10. An injection molding device, characterized in that: include: An injection molding machine frame (4), a support frame (5) and an injection molding nozzle assembly as described in any one of claims 1 to 9, wherein the number of the injection molding nozzle assemblies is set to at least two groups, the base (12) is fixedly assembled on the upper end of the support frame (5), the support frame (5) is fixedly assembled on the injection molding machine frame (4), an injection molding gap (7) is provided between the lower end of the support frame (5) and the injection molding machine frame (4), the injection molding gap (7) is used to place an injection mold, a through opening coaxial with the circular through hole (15) is opened on the support frame (5), and the injection mold is arranged below the through opening.

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