CN221161309U - Integrated needle valve cold runner system - Google Patents

Abstract

The application relates to the technical field of cold runner molds, in particular to an integral needle valve cold runner system, which comprises a splitter plate, wherein the splitter plate comprises a plate body, a main injection nozzle and a plurality of pouring point nozzles, the splitter plate body is internally provided with a split runner, the main injection nozzle is arranged on the plate body and communicated with the split runner to inject injection molding materials into the split runner, the pouring point nozzles are fixed on the lower surface of the plate body and communicated with the split runner, the upper surface of the plate body is provided with a cylinder, one pouring point nozzle is independently provided with a cylinder, the piston of the cylinder is provided with a valve needle, and the cylinder piston drives the valve needle to vertically movably penetrate through the split runner and open the pouring point nozzle or close the pouring point nozzle; the injection molding machine further comprises a control unit, wherein the control unit controls the independent operation of the plurality of air cylinders, the air cylinders control the valve needle to open or close the runner in the nozzle of the pouring point, and the control unit controls the independent operation of each air cylinder, so that the converging time point and the converging position of each injection molding material in the cavity are controllable, and the generation of bonding wires is reduced.

Description

Integrated needle valve cold runner system

Technical Field

The application relates to the technical field of cold runner molds, in particular to an integral needle valve cold runner system.

Background

The cold runner mold is adopted during rubber injection molding, a cold runner system is arranged in the cold runner mold for the injection molding material to flow into the cavity, the temperature of the injection molding material is balanced, the injection molding material is ensured to be in a molten state, and the product yield is improved. In the prior art, the mold cavity is communicated with a plurality of pouring points, and all pouring points communicated with the mold cavity are poured simultaneously, and the mold cavity is filled with the flow of the injection molding material and then solidified and molded to obtain a molded product, however, due to different thin thicknesses of all parts of the mold cavity, the injection molding material needs different time for filling all parts in the mold cavity, so that when the injection molding materials of all pouring points are converged and contacted, the temperature difference of two injection molding materials is larger, the junction line is easy to appear in the convergence, and the phenomena of infirm connection, poor appearance and the like are generated, thereby seriously affecting the quality of the product.

Disclosure of utility model

In order to solve the technical problems, the application provides an integral needle valve cold runner system which is used for reducing the situations that the product quality is affected by phenomena such as loose connection, bad appearance and the like of a bonding wire of injection molding materials in a cavity.

The integrated needle valve cold runner system comprises a splitter plate, wherein the splitter plate comprises a plate body, a main injection nozzle and a plurality of pouring point nozzles, a split runner is arranged in the plate body, the main injection nozzle is arranged on the plate body and communicated with the split runner to inject injection molding materials into the split runner, the pouring point nozzles are fixed on the lower surface of the plate body and communicated with the split runner, the upper surface of the plate body is provided with cylinders with the same quantity as the pouring point nozzles, each pouring point nozzle is independently provided with one cylinder, a piston of each cylinder is provided with a valve needle, and the cylinder drives the valve needle to vertically movably penetrate through the split runner and open the pouring point nozzles or close the pouring point nozzles;

The engine further comprises a control unit, wherein the control unit controls the cylinders to independently operate.

Through adopting above-mentioned technical scheme, the injection molding material is penetrated into the reposition of redundant personnel in the passageway from the main mouth that penetrates to the reposition of redundant personnel to shunt to pour on each pouring point nozzle with die cavity pouring point butt joint through the reposition of redundant personnel passageway, every pouring point nozzle all has a cylinder control needle to open or close the runner and by the independent operation of each cylinder of control unit control, realize that each pouring point nozzle carries out independent injection molding, make every the injection molding time of pouring point nozzle is controllable and control each pouring point nozzle injection molding sequence for each strand injection molding material confluence time point and position are controllable in the die cavity, through reasonable setting, the great production joint line of temperature difference when reducing each strand injection molding material confluence produces, produces to connect insecurely, phenomenon such as outward appearance.

Preferably, the control unit includes gas circuit pipe, air guide plate, solenoid valve, time controller line socket, the air guide plate is provided with a plurality of matches the mounting groove of gas circuit pipe quantity, every the mounting groove all has one the cylinder body part embedding of cylinder is wherein, the air inlet and the gas outlet of cylinder all set up in the top surface of cylinder body, the air guide plate is provided with a plurality of air guide channels, every the cylinder all has two air guide channels to communicate the air inlet and the gas outlet of cylinder respectively, the quantity of gas circuit pipe matches the quantity of air guide channel and the port that an end of every gas circuit pipe all is fixed in an air guide channel, the quantity of solenoid valve matches the quantity of gas circuit pipe, every solenoid valve control a gas circuit pipe outage and ventilation, time controller line socket passes through the signal line with a plurality of solenoid valve and is connected, the air guide plate is provided with the through-hole confession the main nozzle wears out, the air guide plate still is equipped with and is used for locking piece with cold flow mould other part locking of going out.

Through adopting above-mentioned technical scheme, the solenoid valve is used for controlling the cutting off and circulating of gas, time controller line socket is used for being connected with the transmission plug of outside time controller and switches on the signal, time controller carries out independent control to the time of opening and shutting of each solenoid valve and realizes the state duration of control valve needle closing pouring point nozzle or the state duration of releasing closing pouring point nozzle in order to realize the injection molding time independent control of each pouring point nozzle, further, adopt the air guide plate to carry out the air guide to the cylinder, the air guide plate is the rigid piece and is difficult to damage, it is more stable to move the air guide along with the mould, the mounting groove air feed cylinder body part embeds, be convenient for carry out the space dodge, shorten the interval of air guide plate and flow distribution plate, be convenient for reduce the whole volume of cold runner mould, further, the setting of mounting groove shape switching cylinder body, other part closure fixed of air guide plate and cold runner mould through the closure, realize that the centre gripping cylinder is fixed to between air guide plate and the flow distribution plate, the cylinder is fixed stable be difficult to rock, the valve needle is accurate to move of being convenient for.

Preferably, the device further comprises an oil path unit, the oil path unit comprises an oil path channel arranged on the flow dividing plate, a first cavity arranged on the main nozzle and surrounding the flow channel, a second cavity arranged on the pouring point nozzle and surrounding the flow channel, a first oil inlet pipe connected with one end of the oil path channel, a first oil outlet pipe connected with the other end of the oil path channel, a second oil inlet pipe and a second oil outlet pipe communicated with the first cavity, and an oil path bus plate for collecting oil pipes, wherein the second cavity is communicated with the oil path channel, and the first oil inlet pipe, the first oil outlet pipe, the second oil inlet pipe and the second oil outlet pipe are all arranged on the oil path bus plate.

Through adopting above-mentioned technical scheme, first cavity, second cavity and oil circuit passageway all are used for the circulation of hot oil, and the temperature of letting in the balanced cold runner system of hot oil makes the material of moulding plastics be in the molten state all the time in main mouth runner, the reposition of redundant personnel way of penetrating, has guaranteed the mobile performance of the material of moulding plastics, and first oil inlet pipe, first oil outlet pipe, second oil inlet pipe, second oil outlet pipe all are connected with outside oil temperature machine and realize the circulation of hot oil in oil circuit passageway, first cavity and the second cavity.

Preferably, the circuit support comprises a fixing frame and a separation sleeve, the time controller connecting socket, the electromagnetic valve and the oil way bus plate are all fixed on the fixing frame, the separation sleeve is arranged between the fixing frame and the flow dividing plate and is fixedly connected with the fixing frame, the first oil inlet pipe, the first oil outlet pipe, the second oil inlet pipe and the second oil outlet pipe are all arranged in the separation sleeve in a penetrating mode to be converged, a clamp is arranged on the upper surface of the separation sleeve, and the gas way pipe is converged in the clamp.

Through adopting above-mentioned technical scheme, first oil feed pipe, first oil pipe, second oil feed pipe, second oil pipe wear to locate draw together in the spacer bush, the gas circuit pipe is drawn together in the clamp, and the spacer bush separates oil pipe and gas circuit pipe, and guide oil circuit passageway and gas circuit pipe are rationally arranged, reduce the more messy condition of oil circuit passageway and gas circuit pipe staggered arrangement.

In summary, the present application includes at least one of the following beneficial technical effects:

1. Injection molding materials are injected into the flow distribution channel from the main injection nozzle, and are distributed to all pouring point nozzles in butt joint with a pouring point of the cavity through the flow distribution channel for pouring, each pouring point nozzle is provided with a cylinder for controlling a valve needle to open or close a flow channel and a control unit for controlling independent operation of each cylinder, so that each pouring point nozzle is independently injected, the injection molding time of each pouring point nozzle is controllable, the injection molding sequence of each pouring point nozzle is controlled, the converging time point and the converging position of each injection molding material in the cavity are controllable, and through reasonable arrangement, the phenomena of bonding wire, unstable connection, poor appearance and the like caused by large temperature difference when the various injection molding materials converge are reduced.

2. The electromagnetic valve is used for controlling the cutoff and circulation of gas, the time controller connecting wire socket is used for being connected with a transmission plug of an external time controller to conduct signals, the time controller independently controls the opening and closing time of each electromagnetic valve to control the state duration of closing the pouring point nozzle of the valve needle or release the state duration of closing the pouring point nozzle to achieve independent injection time control of each pouring point nozzle, further, the air guide plate is used for guiding air to the air cylinder, the air guide plate is a rigid piece and is not easy to damage, the air guide plate is stable along with the movement of the die, the mounting groove is used for supplying air to the cylinder body part for embedding, so that the space avoidance is facilitated, the distance between the air guide plate and the flow distribution plate is shortened, the whole volume of the cold runner die is convenient to reduce, further, the mounting groove is shaped to be cut into the setting of the cylinder body, the air guide plate and other parts of the cold runner die are locked and fixed through the locking piece, so that the clamping cylinder is fixed between the air guide plate and the flow distribution plate, the air cylinder is stable and is not easy to shake, and the valve needle is convenient to move accurately.

4. The first oil inlet pipe, the first oil outlet pipe, the second oil inlet pipe and the second oil outlet pipe penetrate through the separating sleeve to be converged, the gas circuit pipe is converged in the clamp, the separating sleeve separates the oil pipe from the gas circuit pipe, the oil circuit channels and the gas circuit pipes are guided to be reasonably arranged, and the condition that the staggered arrangement of the oil circuit channels and the gas circuit pipes is disordered is reduced.

Drawings

Fig. 1 is a schematic diagram showing the overall structure of an integrated needle valve cold runner system of embodiment 1.

Fig. 2 is a schematic overall structure of an integrated needle valve cold runner system of embodiment 2.

Fig. 3 is a schematic structural diagram of an air guide plate of embodiment 2.

Reference numerals: 1. a diverter plate; 11. a plate body; 12. a main nozzle; 13. a pouring point nozzle; 14. a cylinder; 141. a valve needle; 2. a control unit; 21. the gas path pipe; 22. an air guide plate; 221. a mounting groove; 222. an air guide channel; 223. a through hole; 224. a locking member; 23. an electromagnetic valve; 24. the time controller is connected with the socket; 3. an oil path unit; 31. a first oil inlet pipe; 32. a first flowline; 33. a second oil inlet pipe; 34. a second oil outlet pipe; 35. an oil path confluence plate; 36. a third oil inlet pipe; 37. a third oil outlet pipe; 4. a line bracket; 41. a fixing frame; 42. a separation sleeve; 421. and (5) clamping the clamp.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

Example 1

The utility model provides an integral needle valve cold runner system, refer to fig. 1, including flow distribution plate 1, control unit 2, oil circuit unit 3, circuit support 4, flow distribution plate 1 includes plate body 11, main nozzle 12, a plurality of pouring point nozzle 13, be provided with the subchannel in the plate body 11, main nozzle 12 is installed on plate body 11 and is used for with the butt joint of the big gun nozzle of injection molding machine with the subchannel intercommunication, injection molding material injection molding is gone into the subchannel, a plurality of pouring point nozzle 13 are fixed in plate body 11 lower surface and top part run through into flow distribution plate 1, its runner and subchannel intercommunication are used for the injection molding material injection to the each part of die cavity of runner reposition of redundant personnel, plate body 11 upper surface is provided with and pouring point nozzle 13 quantity the cylinder 14 the same, every pouring point nozzle 13 all has independently to have a cylinder 14 to counterpoint, the piston of cylinder 14 is provided with a needle 141 (not shown in the figure), the cylinder 14 drives needle 141 and runs through the subchannel from top to bottom and opens pouring point nozzle 13 or closes pouring point nozzle 13.

The control unit 2 comprises an air channel 21, an air guide plate 22, an electromagnetic valve 23 and a time controller connecting socket 24, the air guide plate 22 is provided with a plurality of mounting grooves 221 which are matched with the number of the air channel, the shape of each mounting groove 221 is matched with the arrangement of the cylinder body of the air cylinder 14, each mounting groove 221 is provided with a cylinder body part of the air cylinder 14 embedded therein, an air inlet and an air outlet of the air cylinder 14 are arranged on the top surface of the cylinder body of the air cylinder 14, the positions of the air cylinder 14 corresponding to the air inlet and the air outlet are respectively connected with a connecting pipe, the air guide plate 22 is provided with a plurality of air guide channels 222, each mounting groove 221 is provided with two air guide channels 222 which extend into the air guide channels, an air outlet port of each air guide channel 222 is positioned above the air cylinder 14, the connecting pipes are inserted into the air guide channels 222 to realize the communication between the air cylinder 14 and the air guide channels 222, the number of the air channel 21 is matched with the number of the air guide channels 222, one end part of each air guide channel 21 is fixed on the air guide plate 22 through a joint arranged at the air inlet port of the air guide channels 222 and communicated with the air guide channels 222, the number of the electromagnetic valves 23 is matched with the number of the air channel pipes, each electromagnetic valve 23 controls the air channel pipe 21 to be disconnected and ventilated, the time controller connecting socket 24 and the electromagnetic valve 23 are both fixed on the circuit bracket 4, the time controller connecting socket 24 and the electromagnetic valve 23 are connected through signal lines, the time controller connecting socket 24 is used for connecting an external time controller, the time controller independently controls the opening and closing time of each electromagnetic valve 23 to realize the state duration of the valve needle for closing the pouring point nozzle 13 or the state duration of releasing the closing state of the pouring point nozzle 13 so as to realize the independent control of the injection time of each pouring point nozzle 13, the air guide plate 22 is provided with a through hole 223 for the main nozzle 12 to pass out, the main nozzle 12 is convenient to butt joint with the gun nozzle of the injection molding machine, the air guide plate 22 is further provided with a locking piece 224 for locking and fixing other parts of the cold runner mold, the air guide plate 22 and the other parts of the cold runner mold are locked and fixed through the locking piece 224, the air cylinder 14 is clamped and fixed between the air guide plate 22 and the splitter plate 1 by the air cylinder 14, the air cylinder 14 is stable and is not easy to shake, the valve needle 141 is convenient to accurately move, and the locking piece 224 is preferably a screw.

The oil path unit 3 comprises an oil path channel arranged on the split plate 1, a first cavity arranged on the main nozzle 12 and surrounding the flow path, a first oil inlet pipe 31 connected with one end of the oil path channel, a first oil outlet pipe 32 connected with the other end of the oil path channel, a second oil inlet pipe 33 and a second oil outlet pipe 34 communicated with the first cavity, and an oil path confluence plate 35 used for collecting oil pipes, wherein the number of the oil path channels is two, the two oil path channels are respectively arranged on the upper side and the lower side of the split flow path and are arranged around the split flow path, the second cavity arranged at the pouring point nozzle 13 is communicated with the oil path channel, and the first oil inlet pipe 31, the first oil outlet pipe 32, the second oil inlet pipe 33 and the second oil outlet pipe 34 are all arranged on the oil path confluence plate 35 and are connected with an external oil temperature machine to provide hot oil for the oil path channel, the first cavity and the second cavity for hot oil circulation, and the hot oil in the second cavity is the hot oil flowing in the oil path channel.

The circuit bracket 4 comprises a fixing frame 41 and a separation sleeve 42, the fixing frame 41 is positioned on one side of the division plate 1, the time controller connecting socket 24, the electromagnetic valve 23 and the oil path confluence plate 35 are all fixed on the fixing frame 41, the separation sleeve 42 is arranged between the fixing frame 41 and the division plate 1, the separation sleeve 42 is connected with the fixing frame 41 for fixing, the first oil inlet pipe 31, the first oil outlet pipe 32, the second oil inlet pipe 33 and the second oil outlet pipe 34 are all arranged in the separation sleeve 42 in a penetrating mode and are separated at one end close to the division plate 1, the upper surface of the separation sleeve 42 is arranged on the clamp 421, the gas path pipe 22 is converged in the clamp 421, the separation sleeve 42 separates the oil path channel and the gas path pipe 22, the oil path channel and the gas path pipe 22 are reasonably arranged, the staggered arrangement of the oil path channel and the gas path pipe 22 is reduced, further, the separation sleeve 42 is made of heat insulation materials, heat of the oil path channel is isolated, heat transfer is reduced to the gas thermal expansion phenomenon in the gas path pipe 22 is convenient to reduce.

The implementation principle of the embodiment 1 is as follows: the external oil temperature machine supplies hot oil, the hot oil circulates in the oil path channel, the first cavity and the second cavity, so that the temperature balance among the main injection nozzle 12, the sub-runners and the pouring point nozzles 13 is realized, the injection molding machine injects plastic into the main injection nozzle 12, the main injection nozzle 12 injects the injection molding material into the sub-runners, the valve needle 141 is controlled to move up and down through the cylinder 14 corresponding to the pouring point nozzles 13, the state of opening or closing the runners of the pouring point nozzles 13 is controlled, the opening and closing time of the electromagnetic valve 23 is controlled through the connecting wire socket 24 of the time controller, the ventilation time of the cylinder 14 is controlled, the sequence of injection molding materials injected into the cavity by each pouring point nozzle 13 is controllable, the injection molding time of each pouring point nozzle 13 is controllable, the reasonable setting is carried out on the mold, and the conditions that the temperature difference is large in the cavity is convenient for reducing each strand of injection molding materials so as to influence the product quality.

Example 2

Example 2 differs from example 1 in that: referring to fig. 2, the second cavity provided by the pouring point nozzle 13 is not communicated with the oil path channel, and a third oil inlet pipe 36 and a third oil outlet pipe 37 which are the same as the pouring point nozzle in number are additionally provided in the oil path unit 3, are connected with the pouring point nozzle 13 and are communicated with the second cavity, the third oil inlet pipe 36 and the third oil outlet pipe 37 are connected to the oil path confluence plate 35 and are converged in the separation sleeve 42, and the third oil inlet pipe 36 and the third oil outlet pipe 37 are both connected with an external oil temperature machine.

The implementation principle of the embodiment 2 is as follows: the circulation of the hot oil in the second mould cavity provided by the pouring point nozzle 13 is directly realized by the diversion of the third oil inlet pipe 36 and the third oil outlet pipe 37.

Although embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the application, the scope of which is defined in the appended claims and their equivalents.

Claims (4)

1. An integral needle valve cold runner system, characterized in that: the injection molding machine comprises a splitter plate (1), wherein the splitter plate (1) comprises a plate body (11), a main injection nozzle (12) and a plurality of pouring point nozzles (13), a split runner is arranged in the plate body (11), the main injection nozzle (12) is arranged on the plate body (11) and communicated with the split runner to inject injection molding materials into the split runner, the pouring point nozzles (13) are fixed on the lower surface of the plate body (11) and communicated with the split runner, the upper surface of the plate body (11) is provided with cylinders (14) with the same quantity as the pouring point nozzles (13), one cylinder (14) is independently arranged on one pouring point nozzle (13), a valve needle (141) is arranged on a piston of the cylinder (14), and the piston of the cylinder (14) drives the valve needle (141) to vertically movably penetrate through the split runner and open the pouring point nozzles (13) or close the pouring point nozzles (13);

The engine further comprises a control unit (2), wherein the control unit (2) controls a plurality of cylinders (14) to independently operate.

2. The integrated needle valve cold runner system of claim 1, wherein: the control unit (2) comprises an air channel pipe (21), an air guide plate (22), electromagnetic valves (23) and a time controller connecting wire socket (24), wherein the air guide plate (22) is provided with a plurality of mounting grooves (221) matched with the air channel pipe (21), each mounting groove (221) is provided with a cylinder body part of one air cylinder (14) embedded therein, an air inlet and an air outlet of the air cylinder (14) are arranged on the top surface of the cylinder body of the air cylinder (14), the air guide plate (22) is provided with a plurality of air guide channels (222), each air cylinder (14) is provided with two air guide channels (222) which are respectively communicated with an air inlet and an air outlet of the air cylinder (14), the number of the air guide pipes (21) is matched with the number of the air guide channels (222), one end part of each air guide pipe (21) is fixed on a port of one air guide channel (222), the number of the electromagnetic valves (23) is matched with the number of the air guide channels (21), each electromagnetic valve (23) is used for controlling the air guide channel (21) to be disconnected, the time controller (24) is connected with the air guide plate (12) through the air guide plate (23), the air guide plate (22) is also provided with a locking piece (224) for locking and fixing other parts of the cold runner mold.

3. The unitary needle valve cold runner system of claim 2, wherein: still include oil circuit unit (3), oil circuit unit (3) including set up the oil circuit passageway on flow distribution plate (1), set up on main nozzle (12) encircle the first cavity that the runner set up, set up in pouring point nozzle (13) encircle the second cavity that the runner set up, connect first oil pipe (31) of oil circuit passageway one end, connect first oil pipe (32) of oil circuit passageway other end, second oil pipe (33) and second oil pipe (34) of intercommunication first cavity, and be used for converging oil pipe's oil circuit busbar (35), the second cavity with oil circuit passageway intercommunication, first oil pipe (31), first oil pipe (32), second oil pipe (33), second oil pipe (34) all install in on oil circuit busbar (35).

4. A unitary needle valve cold runner system according to claim 3, characterized in that: still include circuit support (4), circuit support (4) include mount (41) and separate cover (42), time controller line socket (24), solenoid valve (23) and oil circuit busbar board (35) all are fixed in on mount (41), separate cover (42) set up in mount (41) with between division board (1) and with mount (41) are connected fixedly, first oil feed pipe (31), first oil outlet pipe (32), second oil feed pipe (33), second oil outlet pipe (34) wear to locate separate and draw in cover (42), the upper surface of separating cover (42) is provided with clamp (421), gas circuit pipe (21) in draw in clamp (421).