Needle valve type hot runner system

Abstract

The utility model relates to a needle valve type hot runner system, which comprises a mounting main body, a feeding nozzle and two driving cylinders, the mounting main body comprises a mounting plate, a movable combination plate and a splitter plate which are sequentially arranged from top to bottom, the feeding nozzle and the driving cylinders are mounted on the mounting plate, the feeding nozzle penetrates through the movable combination plate, and the two driving cylinders are mounted on the mounting plate. The two driving cylinders are arranged on the movable combination plate and are in sliding connection with the movable combination plate, the bottom of the feeding nozzle is connected with the splitter plate, a heat preservation ring is arranged at the joint of the feeding nozzle and the splitter plate in a sleeving mode, the output ends of the two driving cylinders are both connected with the movable combination plate, and a splitting channel is formed in the splitter plate. A plurality of hot nozzles are mounted at the bottom of the splitter plate, a group of valve needles are inserted into each hot nozzle, and the parts, positioned outside the hot nozzles, of the valve needles penetrate through the splitter plate and are connected with the movable combined plate. According to the utility model, the injection molding requirement under the condition of high-density injection molding points can be met, and the surface quality of a product can be effectively ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to hot runner injection molding technical field, specifically, relate to a needle valve type hot runner system. BACKGROUND

[0002] The needle valve type hot runner system is a kind of injection molding system by valve needle control hot nozzle switch, to realize hot nozzle glue and seal glue, at present, when some precision and quality requirements higher product injection molding, multiple injection points need to be carried out injection molding simultaneously, therefore, hot nozzle needs to be set in each injection point, the existing needle valve type hot runner system is usually equipped with a cylinder for each hot nozzle, to drive the valve needle in hot nozzle to move, when the distance of some injection points is close, the density is high, ordinary standard cylinder is not convenient to set too close, interference is easily generated, therefore, it cannot meet the injection molding demand of high-density injection point, and some small volume cylinders need to be non-standard customized to meet, this way greatly increases the cost of system;In addition, one cylinder is equipped for each hot nozzle, cannot control the opening and closing of all hot nozzles simultaneously, leading to the glue sealing time of each hot nozzle is inconsistent when stopping injection molding, product surface is prone to uneven phenomenon, seriously affect the quality of product. SUMMARY

[0003] Therefore, the utility model provides a needle valve type hot runner system that can meet high-density injection molding.

[0004] A needle valve type hot runner system, including installation main body, feed nozzle and two drive cylinders, the installation main body includes installation plate, mobile combination plate and shunt plate from top to bottom sequentially, the feed nozzle and the drive cylinder are installed on the installation plate, the feed nozzle penetrates the mobile combination plate, and is connected with the mobile combination plate sliding, the bottom of the feed nozzle is connected with the shunt plate, and the feed nozzle is equipped with heat preservation ring at the connecting portion with the shunt plate, the output end of two drive cylinders is connected with the mobile combination plate, the shunt plate is built-in shunt channel, the bottom of the shunt plate is installed with multiple hot nozzles, a group of valve needles is inserted in each hot nozzle, the part of the valve needle located in the outside of the hot nozzle penetrates the shunt plate, and is connected with the mobile combination plate.

[0005] In the above technical solution, when the system is used, the material is injected from the top of the feeding nozzle, enters the distribution plate through the feeding nozzle, and the distribution plate distributes the material sent into each hot nozzle through the built-in distribution channel, and the material flows out from the gate at the bottom of the hot nozzle to the cavity of the mold, wherein each hot nozzle is provided with a plurality of gates, and each gate is provided with a valve needle, the valve needle is used for opening and closing the gate, the top of the valve needle penetrates the distribution plate and is connected with the upper moving combination plate, the output ends of the two drive cylinders are connected with the moving combination plate, the moving combination plate can be driven to move up and down to drive all valve needles to move up and down, so that all hot nozzles are opened and closed at the same time, and in addition, since the space for moving the moving combination plate up and down needs to be reserved, there is a small gap exposed in the air above the connection between the feeding nozzle and the distribution plate, therefore, the heat preservation ring is arranged at the position, so that heat loss can be effectively prevented, and the temperature of the material in the feeding nozzle can be ensured.

[0006] Further, the moving combination plate comprises a moving base plate and a connecting plate arranged above and below, the top of each group of valve needles is provided with a limiting block, the top of the valve needle is connected with the limiting block, and the limiting block is fixedly installed at the top of the moving base plate.

[0007] In the above technical solution, the top of each valve needle in each hot nozzle is connected with a limiting block, the moving combination plate is driven to move, and the valve needles move up and down together.

[0008] Further, a plurality of guide columns are slidably arranged on the moving combination plate, and the top ends of the guide columns are fixedly connected with the mounting plate.

[0009] In the above technical solution, the guide columns are arranged at the edge positions of the moving combination plate, and are used for guiding the up-down movement of the moving combination plate, thereby improving the accuracy.

[0010] Further, a sealing ring is further sleeved on the feeding nozzle, and the sealing ring is located at the connection position of the feeding nozzle and the distribution plate.

[0011] In the above technical solution, the sealing ring is arranged at the contact position of the outer periphery of the feeding nozzle and the distribution plate, and is used for sealing, so as to prevent impurities from entering and causing material pollution.

[0012] Further, the mounting main body further comprises a flow channel plate, the flow channel plate is provided with a mounting groove for mounting the distribution plate, and a plurality of mounting holes for mounting the hot nozzles are formed in the groove bottom of the mounting groove.

[0013] In the above technical solution, the distribution plate is mounted in the mounting groove, the hot nozzle part protruding from the bottom of the distribution plate is mounted in the mounting hole, and the flow channel plate is used for providing an installation carrier for the distribution plate and the hot nozzle, and can also play a certain heat preservation role.

[0014] Further, the top of the flow channel plate is provided with a flow channel plate backing plate, the flow channel plate is provided with a through hole for the valve needle to pass through, and the flow channel plate backing plate covers the shunt plate in the mounting groove.

[0015] In the technical scheme, the flow channel plate backing plate is used to package the shunt plate in the flow channel plate, so that the overall heat preservation performance is improved and the overall sealing performance of the system is enhanced.

[0016] Further, the top of the flow channel plate backing plate is provided with two support blocks, and the two support blocks are located on the two sides of the moving combined plate respectively, and the top of the support block abuts against the mounting plate.

[0017] In the technical scheme, the top of the support block abuts against the mounting plate, the bottom of the support block abuts against the flow channel plate backing plate, the height of the support block is greater than the height of the moving combined plate, so that the moving combined plate is provided with a space for moving up and down.

[0018] Further, the bottom of the flow channel plate is provided with a base, the base comprises a first support plate and a second support plate arranged in a top-down manner, the first support plate is provided with a first through hole for the hot nozzle to pass through, and the second support plate is provided with a second through hole for the bottom gate of the hot nozzle to pass through.

[0019] In the technical scheme, the first support plate and the second support plate wrap the part of the hot nozzle passing through the bottom of the flow channel plate respectively, so that the heat preservation effect is achieved, and the hot nozzle is prevented from being exposed to the outside, thereby protecting the hot nozzle.

[0020] Further, the electromagnetic valve bus plate is installed on the outside of the mounting body.

[0021] In the technical scheme, the electromagnetic valve bus plate is connected with the external air pump, the electromagnetic valve bus plate can control the moving direction of the piston of the air cylinder, so as to control the moving direction of the valve needle, so as to achieve the effect of controlling the glue output and sealing of the system.

[0022] The beneficial effects of the present application are as follows:

[0023] The present application controls the movement of multiple valve needles by controlling the moving combined plate, thereby greatly reducing the number of driving members, reducing the cost, and avoiding the mutual interference between the driving members, so that the hot nozzles can be arranged more densely, the precise products with high-density multi-point injection can be used, all the hot nozzles can be started and stopped at the same time, the consistency of the surface quality of the products is ensured, and the heat loss phenomenon caused by a large amount of material passing through is effectively avoided, so that the temperature of the material when reaching the hot nozzle is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an exploded view of the needle valve type hot runner system of this application.

[0026] Figure 2 for Figure 1 A magnified view of region A in the middle.

[0027] Figure 3 This is a perspective view of the needle valve type hot runner system of this application.

[0028] Figure 4 for Figure 3 A top view of the needle valve hot runner system.

[0029] Figure 5 for Figure 4 A cross-sectional view at position AA in the middle.

[0030] Figure 6 for Figure 5 A magnified view of region B in the middle.

[0031] Figure 7 for Figure 3 Left view of the needle valve hot runner system in the image.

[0032] Explanation of the reference numerals in the figure:

[0033] 1-Installation body; 11-Installation plate; 12-Moving combination plate; 121-Moving pad; 122-Connecting plate; 123-Guide post; 13-Diverter plate; 14-Flow channel plate pad; 15-Flow channel plate; 151-Installation groove; 152-Installation hole; 16-First support plate; 161-First through hole; 17-Second support plate; 171-Second through hole; 18-Support block; 2-Feed nozzle; 21-Insulation ring; 22-Sealing ring; 3-Drive cylinder; 4-Hot nozzle; 41-Gate; 42-Valve needle; 43-Limit block; 5-Solenoid valve manifold. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.

[0036] It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0037] Please refer to Figures 1 to 7 A needle valve hot runner system, comprising a mounting body 1, a feeding nozzle 2 and two drive cylinders 3, the mounting body 1 comprises a mounting plate 11, a moving combination plate 12 and a distribution plate 13 arranged in sequence from top to bottom, the feeding nozzle 2 and the drive cylinders 3 are mounted on the mounting plate 11, the feeding nozzle 2 penetrates through the moving combination plate 12 and is in sliding connection with the moving combination plate 12, the bottom of the feeding nozzle 2 is connected with the distribution plate 13, the output ends of the two drive cylinders 3 are both connected with the moving combination plate 12, the distribution plate 13 is internally provided with a distribution channel, and the bottom of the distribution plate 13 is provided with a plurality of hot nozzles 4, a group of valve needles 42 is internally inserted in each hot nozzle 4, the part of the valve needle 42 located outside the hot nozzle 4 penetrates through the distribution plate 13, and the top end thereof is connected with the moving combination plate 12.

[0038] It should be noted that the hot nozzle 4 in the embodiment is provided with three gates 41, the gates 41 are located at the bottom of the hot nozzle 4 body, and correspondingly, each hot nozzle 4 is provided with three valve needles 42, each valve needle 42 is used for controlling one gate 41.

[0039] Specifically, in use, the material is injected from the top of the feeding nozzle 2, enters the distribution plate 13 through the feeding nozzle 2, and is distributed to each hot nozzle 4 by the internally provided distribution channel of the distribution plate 13, and then flows out from the gates 41 at the bottom of the hot nozzle 4 to the cavity of the mold, wherein the top of the valve needle 42 is connected with the moving combination plate 12, the two drive cylinders 3 can drive all the valve needles 42 to move up and down by driving the moving combination plate 12 to move up and down, so as to simultaneously open and close all the hot nozzles 4.

[0040] Please refer to Figure 6In the embodiment, the feeding nozzle 2 is sleeved with a heat preservation ring 21 and a sealing ring 22 at the joint with the distribution plate 13, the heat preservation ring 21 is above the sealing ring 22, and a small gap exposed to air exists above the joint of the feeding nozzle 2 with the distribution plate 13 due to the space required for the upward and downward movement of the combined moving plate 12. Therefore, the heat preservation ring 21 arranged at the position can effectively prevent heat loss and ensure the temperature of the material in the feeding nozzle 2. The sealing ring 22 is arranged at the position where the outer periphery of the feeding nozzle 2 contacts with the distribution plate 13, and is used for sealing to prevent impurities from entering the distribution plate 13 and causing the material to be contaminated.

[0041] Please refer to Figures 1 to 2 In the embodiment, the installation main body 1 further comprises a flow channel plate 15, the flow channel plate 15 is internally provided with an installation groove 151 for installing the distribution plate 13, a plurality of installation holes 152 for installing the hot nozzles 4 are formed in the groove bottom of the installation groove 151, the distribution plate 13 is installed in the installation groove 151, the hot nozzles 4 protruding from the bottom of the distribution plate 13 are partially installed in the installation holes 152, and the flow channel plate 15 is used for providing an installation carrier for the distribution plate 13 and the hot nozzles 4 and can also play a certain heat preservation role.

[0042] Please refer to Figures 1 to 7 In the embodiment, the top of the flow channel plate 15 is provided with a flow channel plate backing plate 14, the flow channel plate 15 is provided with through holes through which the valve needles 42 pass, and the flow channel plate backing plate 14 covers the distribution plate 13 in the installation groove 151. The flow channel plate backing plate 14 is used for packaging the distribution plate 13 in the flow channel plate 15, and can improve the overall heat preservation performance and strengthen the overall sealing performance of the system.

[0043] Please refer to Figures 1 to 7 In the embodiment, the top of the flow channel plate backing plate 14 is provided with two support blocks 18, the two support blocks 18 are respectively located at the two sides of the combined moving plate 12, the top of the support block 18 abuts against the installation plate 11, the bottom of the support block 18 abuts against the flow channel plate backing plate 14, the height of the support block 18 is greater than the height of the combined moving plate 12, and thus the combined moving plate 12 is provided with a space for upward and downward movement.

[0044] Please refer to Figures 1 to 3 In the embodiment, the combined moving plate 12 comprises an upper moving backing plate 121 and a connecting plate 122 arranged in a stacked manner, the top of each group of valve needles 42 is provided with a limiting block 43, the top of the valve needle 42 is connected with the limiting block 43, the limiting block 43 is fixedly installed at the top of the moving backing plate 121, and the three valve needles 42 in each hot nozzle 4 are connected with a limiting block 43. The valve needles 42 are moved upward and downward by driving the combined moving plate 12 to move.

[0045] Please refer to Figures 1 to 7In the embodiment, a plurality of guide columns 123 are arranged on the sliding combination plate 12, the guide columns 123 are arranged at the edge positions of the sliding combination plate 12, the top end of the guide column 123 is fixedly connected with the mounting plate 11, and the bottom end is provided with a convex ring protruding at one end, the convex ring is used for limiting the connecting plate 122, the guide column 123 is used for guiding the up-down movement of the sliding combination plate 12, and the precision of movement is improved.

[0046] Specifically, the bottom end of the guide column 123 is inserted on the flow channel plate base plate 14 below.

[0047] Please refer to Figures 1 to 7 In the embodiment, the bottom of the flow channel plate 15 is provided with a base, the base comprises first and second support plates 16 and 17 arranged in sequence, the first support plate 16 is provided with a first through hole 161 for the hot nozzle 4 to pass through, the second support plate 17 is provided with a second through hole 171 for the bottom gate 41 of the hot nozzle 4 to pass through, and the first and second support plates 16 and 17 wrap the part of the hot nozzle 4 passing through the bottom of the flow channel plate 15, so that the hot nozzle 4 is prevented from being exposed to the outside, thereby protecting the hot nozzle 4.

[0048] Please refer to Figure 7 In the embodiment, the electromagnetic valve bus plate 5 is arranged on the outer side of the mounting body 1, the electromagnetic valve bus plate 5 is connected with an external air pump and simultaneously connected with the driving cylinder 3 in the mounting body 1, so that the moving direction of the piston of the driving cylinder 3 can be controlled, the moving direction of the valve needle 42 is controlled, and the effect of controlling the glue output and sealing of the system is achieved.

[0049] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

[0050] In the description of the utility model, it should be understood that the orientation or position relationship indicated by terms such as ''up'', ''down'', ''front'', ''back'', ''left'', ''right'', ''vertical'', ''horizontal'', ''top'', ''bottom'', ''inner'', ''outer'' and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0051] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or an indicated number of technical features. Therefore, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more than two, unless otherwise explicitly and specifically limited.

[0052] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A needle valve hot runner system characterized by, Including installation body, feed nozzle and two drive cylinders, the installation body includes installation plate, moving combination plate and shunt plate arranged in turn from top to bottom, the feed nozzle and the drive cylinder are installed on the installation plate, the feed nozzle penetrates the moving combination plate and is connected with the moving combination plate, the bottom of the feed nozzle is connected with the shunt plate, and the feed nozzle is provided with a heat preservation ring at the connection with the shunt plate, the output end of two drive cylinders is connected with the moving combination plate, the shunt plate is provided with a shunt channel, the bottom of the shunt plate is provided with a plurality of hot nozzles, a group of valve needles is arranged in each hot nozzle, and the part of the valve needle outside the hot nozzle penetrates the shunt plate and is connected with the moving combination plate.

2. The needle valve hot runner system of claim 1, wherein, The moving combination plate includes moving base plate and connecting plate arranged in sequence, the top of each group of valve needles is provided with a limiting block, the top of the valve needle is connected with the limiting block, and the limiting block is fixedly installed on the top of the moving base plate.

3. The needle valve hot runner system of claim 2, wherein, A plurality of guide columns are slidably arranged on the moving combination plate, and the top end of the guide column is fixedly connected with the installation plate.

4. The needle valve hot runner system of claim 1, wherein, The feed nozzle is further provided with a sealing ring, and the sealing ring is located at the connection between the feed nozzle and the shunt plate.

5. The needle valve hot runner system of claim 1, wherein, The installation body further includes a flow channel plate, the flow channel plate is provided with an installation groove for installing the shunt plate, and a plurality of installation holes for installing the hot nozzles are formed in the groove bottom of the installation groove.

6. The needle valve hot runner system of claim 5, wherein, The top of the flow channel plate is provided with a flow channel plate base plate, the flow channel plate is provided with a through hole for the valve needle to pass through, and the flow channel plate base plate covers the shunt plate in the installation groove.

7. The needle valve hot runner system of claim 6, wherein, The top of the flow channel plate base plate is provided with two supporting blocks, and the two supporting blocks are located on the two sides of the moving combination plate, respectively.

8. The needle valve hot runner system of claim 5, wherein, The bottom of the flow channel plate is provided with a base, and the base includes first supporting plate and second supporting plate arranged in sequence, the first supporting plate is provided with a first through hole for the hot nozzle to pass through, and the second supporting plate is provided with a second through hole for the bottom gate of the hot nozzle to pass through.

9. The needle valve hot runner system of claim 1, wherein, The outside of the installation body is provided with a solenoid valve bus plate.

Images