A micro-injection full hot runner die and equipment for USB core integrated injection molding

Abstract

The application provides a micro-injection full hot runner die for integrally injection molding of a USB glue core, comprising a bottom sealing plate, a hot runner installation positioning plate installed on the bottom sealing plate, a lower die seat installed on the hot runner installation positioning plate, the bottom sealing plate, the hot runner installation positioning plate and the lower die seat being fixed together through connecting columns, an upper die seat arranged above the lower die seat, a core plate installed above the upper die seat, a pressing plate installed above the core plate, a top plate installed above the pressing plate, the top plate, the pressing plate, the core plate and the upper die seat being fixed together through connecting columns, and a hot runner forming module being installed between the lower die seat and the upper die seat. The micro-injection full hot runner die for integrally injection molding of a USB glue core and the equipment have reasonable structure design, the full hot runner structure in the die is designed, only one glue inlet is designed, the demolding structure becomes easy, no waste is generated, the production cost is greatly reduced, and the die is suitable for forming production of high-quality USB glue cores.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of USB production equipment, in particular to a micro-injection full hot runner mold and equipment for integrally injection molding of USB glue core. BACKGROUND

[0002] The glue core is an important functional part of the USB connector, which is used for positioning and insulating protection of the terminal. The existing USB products generally need to be produced by twice injection molding of the glue core. The wall thickness of some structures of the glue core is unevenly distributed, the length, width and height dimensions differ greatly, and the internal structure is complex. In order to ensure the quality of the molded glue core, multiple glue inlets are often designed on the mold to enable multiple points to synchronously inject glue. Although this molding structure can well ensure the quality of the molded glue core, the structure design of multiple water inlets not only makes the demolding structure complex, but also wastes a lot of glue material. The performance of the water inlet glue material will decrease after recycling and cannot be used for the molding production of high-quality plastic parts, thus causing serious loss of raw materials and high production cost. SUMMARY

[0003] In view of the deficiencies of the prior art, the present application provides a micro-injection full hot runner mold and equipment for integrally injection molding of USB glue core. Only one glue inlet is designed, and the structure design of one water inlet not only makes the demolding structure easy, but also does not waste plastic material, greatly reduces the production cost, and is suitable for the molding production of high-quality USB glue core.

[0004] To achieve the above technical solutions, the application provides a micro-injection full hot runner mold for USB core integrated injection molding, which comprises a bottom sealing plate, a hot runner installation positioning plate installed on the bottom sealing plate, a lower mold base installed on the hot runner installation positioning plate, the bottom sealing plate, the hot runner installation positioning plate and the lower mold base being fixed together through connecting columns, an upper mold base arranged above the lower mold base, a core plate installed above the upper mold base, a pressing plate installed above the core plate, a top plate installed above the pressing plate, the top plate, the pressing plate, the core plate and the upper mold base being fixed together through connecting columns, a hot runner forming module being installed between the lower mold base and the upper mold base, the hot runner forming module comprising two parallel and spaced rubber core forming modules, each rubber core forming module comprising a hot runner forming seat arranged on the lower mold base, two parallel and spaced copper bar placement grooves arranged on the hot runner forming seat, a hot runner outlet being arranged on the center line between the two copper bar placement grooves, a hot flow-out plate being installed on the top of the hot runner outlet, a pressurizing plate being installed above the hot flow-out plate, the pressurizing plate and the hot flow-out plate being connected through connecting columns, the top of the pressurizing plate being fixed to the bottom of the pressing plate, and a rubber core forming mold being installed at the bottom of the upper mold base and on one side of the copper bar placement groove; a injection feeding port being arranged at the center of the bottom of the bottom sealing plate, a feeding hole corresponding to the injection feeding port being arranged at the center of the hot runner installation positioning plate, a flow distributor installation groove being arranged on both sides of the feeding hole on the hot runner installation positioning plate, a hot runner flow distributor being installed in the flow distributor installation groove, a shunt groove being arranged at the center of the lower mold base, the shunt groove being arranged directly above the feeding hole and being in communication with the flow distributor installation grooves on both sides of the hot runner installation positioning plate, and a flow hole being arranged above the flow distributor installation groove on the lower mold base and being arranged directly below the hot runner outlet arranged on the hot runner forming seat.

[0005] In the above technical solution, in actual work, after the copper bar is placed in the copper bar placement groove, the injection molding machine drives the upper mold base and the lower mold base to close, so that the rubber core forming mold and the hot runner forming seat are combined, the pressing plate pushes the pressurizing plate to cover the hot flow-out plate on the hot runner outlet, then the injection molding machine injects through the injection feeding port arranged at the center of the bottom of the bottom sealing plate, the molten plastic enters the feeding hole arranged on the hot runner installation positioning plate through the injection feeding port, then flows into the flow distributor installation groove through the shunt groove, and then is discharged outward through the flow hole and the hot runner outlet after being heated by the hot runner flow distributor installed in the flow distributor installation groove, meanwhile, the molten plastic flows into the rubber core forming mold uniformly through the hot flow-out plate under the action of pressure, the copper bar is placed in the copper bar placement groove, the copper feet arranged on the copper bar extend into the rubber core forming mold, the rubber core is formed and molded in the rubber core forming mold under pressure, and the rubber core wraps the copper feet, and the rubber core product is obtained after pressure holding. After the rubber core is formed, the injection molding machine drives the upper mold base and the lower mold base to separate, and the formed rubber core product can be taken out.

[0006] Preferably, the front side of the hot runner mounting positioning plate is provided with a hot runner control joint module, the hot runner control joint module comprises a mounting plate fixed on the front side of the hot runner mounting positioning plate, control valves are mounted on the left and right sides of the mounting plate, the two control valves are connected with hot runner distributors mounted in two flow distributor mounting grooves through pipelines, temperature sensors and pressure sensors are mounted on the hot runner distributors, and a plurality of hot runner control joints are mounted on the front side of the mounting plate in parallel and at intervals, and the hot runner control joints are electrically connected with the temperature sensors and the pressure sensors mounted on the hot runner distributors.

[0007] Preferably, a plurality of buffers are mounted between the upper die seat and the pressing plate, the top of the buffer is fixedly connected with the pressing plate, and the bottom of the buffer is connected with the upper die seat along the longitudinal direction through the core plate, so that the impact resistance of the upper die seat is improved.

[0008] Preferably, guide sleeves in communication are arranged at four end corners of the core plate and the upper die seat, guide columns protruding upward are arranged on the lower die seat, and the guide sleeves are sleeved on the guide columns, so that the clamping of the upper die seat and the lower die seat is accurate.

[0009] Preferably, two pressurizing plate through grooves are arranged on the core plate, the pressurizing plate passes through the pressurizing plate through grooves and is fixed on the pressing plate, and springs are arranged between the pressurizing plate and the hot flow discharge plate, so that the buffering performance between the pressurizing plate and the hot flow discharge plate is improved.

[0010] The application further provides a micro-injection full hot runner injection equipment for USB glue core integrated injection molding, which comprises the micro-injection full hot runner mold for USB glue core integrated injection molding, a copper bar feeding frame and an injection machine.

[0011] The micro-injection full hot runner mold for USB glue core integrated injection molding provided by the application has the following beneficial effects:

[0012] (1) The micro-injection full hot runner mold structure for the USB core integrated injection molding is reasonable in design, through the design of the full hot runner structure in the mold, the heat retention of the hot runner distributor is adopted to ensure that the plastic in the runner and the gate remains in a molten state, since the heating ring and heating rod are arranged near or in the center of the runner, the whole runner from the nozzle outlet of the injection machine to the gate is in a high temperature state, so that the plastic in the runner always remains molten, and the runner waste does not need to be taken out every time the mold is opened and the part is taken out, and the molten material remaining in the hot runner system can be injected into the cavity in the next injection molding, thereby reducing the waste of raw materials, avoiding the freezing time and subsequent processing, making the plastic more beautiful, and improving the production efficiency and economic benefits.

[0013] (2) The micro-injection full hot runner mold for the USB core integrated injection molding only needs to design one glue inlet and one water gap structure design, which not only makes the demolding structure easy, but also does not waste plastic material, greatly reduces the production cost, and is suitable for the molding production of high-quality USB cores. In actual work, after the copper bar is placed in the copper bar placing groove, the injection molding machine drives the upper mold base and the lower mold base to close the mold, so that the glue core forming mold and the hot runner forming seat fit together, the pressing plate pushes the pressing plate to place the hot runner material plate cover on the hot runner outlet, and then the injection molding machine injects the mold through the injection feeding port arranged at the center of the bottom sealing plate, and then the molten plastic enters the feeding hole arranged on the positioning plate of the hot runner through the injection feeding port, and then flows into the flow distributor installation groove through the flow distributor installation groove, and then the hot runner flow distributor installation groove is heated through the hot runner flow distributor installation groove, and then the molten plastic is discharged outward through the flow hole and the hot runner outlet. At the same time, the molten plastic flows uniformly into the glue core forming mold under the action of pressure, the copper bar is placed in the copper bar placing groove, and the copper foot arranged on the copper bar extends into the glue core forming mold, the glue core is formed and molded in the glue core forming mold, and the glue core wraps the copper foot, and the glue core product is obtained after pressure holding. After the glue core is formed, the injection molding machine drives the upper mold base and the lower mold base to separate, and the formed glue core product is taken out, so that no waste is generated in the whole process, and full automatic continuous operation can be realized, which greatly improves the efficiency of glue core injection. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structure schematic diagram of the finished product after injection molding of the application.

[0015] Figure 2 It is a three-dimensional structure assembly drawing of the full hot runner mold in the application.

[0016] Figure 3 It is an exploded view of the full hot runner mold in the application.

[0017] Figure 4 It is an exploded view of the full hot runner mold in the application.

[0018] Figure 5 Schematic diagram of internal partial structure of full hot runner mold in the application Figure I .

[0019] Figure 6 Schematic diagram of internal partial structure of full hot runner mold in the application Figure II .

[0020] Figure 7 Schematic diagram of internal partial structure of full hot runner mold in the application Figure III .

[0021] Figure 8 Exploded view of lower mold base, hot runner installation positioning plate and bottom sealing plate of full hot runner mold in the application.

[0022] Figure 9 Schematic diagram of micro-injection full hot runner injection equipment for USB core integrated injection molding in the application.

[0023] In the figure: 1, top plate; 2, pressing plate; 21, buffer; 22, guide sleeve; 23, pressurizing plate through groove; 3, core plate; 4, upper mold base; 5, hot runner forming module; 51, core forming module; 511, copper bar placement groove; 512, pressurizing plate; 513, hot flow discharge plate; 514, core forming die; 515, hot runner outlet; 516, hot runner forming seat; 6, lower mold base; 61, flow distribution groove; 62, flow distribution hole; 7, hot runner installation positioning plate; 71, feeding hole; 72, hot runner flow distributor; 8, bottom sealing plate; 81, injection feeding port; 9, hot runner control connector module; 91, installation plate; 92, control valve; 93, hot runner control connector; 100, copper bar; 200, copper foot; 300, core; 400, copper bar feeding rack; 500, injection molding machine. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. All other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the application.

[0025] Embodiment 1: A micro-injection full hot runner mold for USB core integrated injection molding.

[0026] Reference Figures 1 to 8As shown, a micro-injection full hot runner mold for integral injection molding of a USB rubber core comprises: a bottom sealing plate 8, on which a hot runner mounting positioning plate 7 is mounted, on which a lower mold base 6 is mounted, and the bottom sealing plate 8, the hot runner mounting positioning plate 7, and the lower mold base 6 are fixed together by connecting columns to form the lower mold of the mold. An upper mold base 4 is arranged above the lower mold base 6, and a core plate 3 is mounted above the upper mold base 4, a pressure plate 2 is mounted above the core plate 3, and a top plate 1 is mounted above the pressure plate 2. The top plate 1, the pressure plate 2, the core plate 3, and the upper mold base 4 are fixed together by connecting columns to form the upper mold of the mold. Four buffers 21 are installed between the upper mold base 4 and the pressure plate 2. The top of the buffer 21 is fixedly connected to the pressure plate 2, and the bottom of the buffer 21 passes through the core plate 3 in the longitudinal direction and is connected to the upper mold base 4 to improve the stamping resistance of the upper mold base 4. The four corners of the core plate 3 and the upper die base 4 are each provided with interconnected guide sleeves 22. The lower die base 6 is provided with upwardly protruding guide posts. The guide sleeves 22 are sleeved on the guide posts to ensure accurate mold closing between the upper die base 4 and the lower die base 6. The core plate 3 is provided with two pressure plate through-slots 23. The pressure plate 512 passes through the pressure plate through-slots 23 and is fixed to the pressure plate 2.

[0027] The hot runner molding module 5 is installed between the lower mold base 6 and the upper mold base 4. The hot runner molding module 5 includes two parallel and spaced rubber core molding modules 51. Each rubber core molding module 51 includes a hot runner molding seat 516 arranged on the lower mold base 6. The hot runner molding seat 516 is provided with two parallel and spaced copper bar placement grooves 511. The hot runner outlet 515 is arranged on the center line between the two copper bar placement grooves 511. A hot flow discharge plate 513 is installed on the top of the hot runner outlet 511. The function of the hot flow discharge plate 513 is to make the hot runner outlet The molten plastic from the outlet 511 flows evenly into the rubber core molding die 514. The pressure plate 512 is installed above the hot runner outlet plate 513. The pressure plate 512 and the hot runner outlet plate 513 are connected by a connecting column. The top of the pressure plate 512 passes through the pressure plate through-slot 23 and is fixed to the bottom of the pressure plate 2. A spring is installed between the pressure plate 512 and the hot runner outlet plate 513 to enhance the buffering performance between the pressure plate 512 and the hot runner outlet plate 513. The rubber core molding die 514 is installed at the bottom of the upper mold base 4 and is located on one side of the copper bar placement slot 511. In actual operation, when the lower mold base 6 and the upper mold base 4 are closed, the rubber core molding die 514 just covers one side of the copper bar placement slot 511. The molten plastic passes through the hot runner outlet 511 and then flows evenly through the hot runner outlet plate 513 into the rubber core molding die 514 for pressure maintenance molding.

[0028] The bottom center of the bottom sealing plate 8 is provided with an injection feeding port 81, the center of the hot runner installation positioning plate 7 is provided with a feeding hole 71 corresponding to the injection feeding port 81, the hot runner installation positioning plate 7 is provided with a flow distributor installation groove on both sides of the feeding hole 71, the hot runner flow distributor 72 is installed in the flow distributor installation groove, the center of the lower mold base 6 is provided with a distribution groove 61, the distribution groove 61 is located directly above the feeding hole 71, and the distribution groove 61 is in communication with the flow distributor installation grooves on both sides of the hot runner installation positioning plate 7, the lower mold base 6 is provided with a flow hole 62 corresponding to the flow distributor installation groove, and the flow hole 62 is located directly below the hot runner outlet 515 provided on the hot runner forming seat 516. In actual work, when the copper bar 100 is placed in the copper bar placing groove 511, the injection molding machine drives the upper mold base 4 and the lower mold base 6 to close the mold, so that the rubber core forming die 514 and the hot runner forming seat 516 are fitted, the pressing plate 2 pushes the pressing plate 512 to cover the hot runner outlet plate 513 on the hot runner outlet 515, and then the injection molding machine performs injection molding through the injection feeding port 81 provided at the bottom center of the bottom sealing plate 8. The molten plastic enters the feeding hole 71 provided on the hot runner installation positioning plate 7 through the injection feeding port 81, then flows into the flow distributor installation groove through the distribution groove 61, and then flows out through the flow hole 62 and the hot runner outlet 515 after being heated by the hot runner flow distributor 72 installed in the flow distributor installation groove. At the same time, the molten plastic flows into the rubber core forming die 514 uniformly under the action of pressure, the copper bar 100 is placed in the copper bar placing groove 511, and the copper leg 200 provided on the copper bar 100 extends into the rubber core forming die 514, the rubber core 300 is pressure-formed in the rubber core forming die 514, and the rubber core 300 wraps the copper leg 200, and the rubber core 300 product (as shown in Figure 1 ) is obtained after pressure holding. After the rubber core is formed, the injection molding machine drives the upper mold base 4 and the lower mold base 6 to separate, and the formed rubber core product is taken out, so that no waste is generated in the whole process, and full automatic continuous operation can be realized, which greatly improves the efficiency of rubber core injection molding.

[0029] The front side of the hot runner installation positioning plate 7 is provided with a hot runner control joint module 9, the hot runner control joint module 9 comprises a mounting plate 91 fixed on the front side of the hot runner installation positioning plate 7, and control valves 92 are installed on the left and right sides of the mounting plate 91, and the two control valves 92 are connected with hot runner distributors 72 installed in two distributor installation grooves through pipelines, temperature sensors and pressure sensors are installed on the hot runner distributors 72, and a plurality of parallel and spaced hot runner control joints 93 are installed on the front side of the mounting plate 91, and the hot runner control joints 93 are electrically connected with the temperature sensors and the pressure sensors installed on the hot runner distributors 72. In actual work, the pneumatic distribution pressure of the hot runner distributor 72 can be accurately controlled through the two control valves 92, and the temperature and pressure changes in the mold can be monitored in real time through the hot runner control joints 93, so that the pressure and temperature in the mold can be more accurately controlled.

[0030] The micro-injection full hot runner mold structure for the integral injection molding of the USB core is reasonable in design, the full hot runner structure in the mold is designed, the hot runner distributor 72 is used to keep heating to ensure that the plastic in the runner and the sprue keeps a molten state, since the heating ring and the heating rod are arranged near or in the center of the runner, the whole runner from the nozzle outlet of the injection machine to the sprue is in a high temperature state, so that the plastic in the runner always keeps molten, the runner waste does not need to be taken out every time the mold is opened and the part is taken out, and the molten material remaining in the hot runner system can be injected into the cavity in the next injection molding, so that the raw material waste is reduced, the freezing time and the subsequent processing process are avoided, the plastic is more beautiful, the production efficiency and the economic benefit are improved. Moreover, the micro-injection full hot runner mold for the integral injection molding of the USB core only needs to design one glue inlet and one water port, so that the demolding structure becomes easy, plastic material is not wasted, no waste is generated, the production cost is greatly reduced, and the mold production of high-quality USB cores is suitable.

[0031] Embodiment 2: A micro-injection full hot runner injection molding equipment for the integral injection molding of a USB core.

[0032] Reference Figure 9As shown, the application also provides a micro-injection full hot runner injection equipment for USB core integrated injection molding, comprising: the micro-injection full hot runner mold for USB core integrated injection molding as described in embodiment 1, further comprising a copper bar feeding rack 400 and an injection molding machine 500, the micro-injection full hot runner mold for USB core integrated injection molding is installed in the injection cavity of the injection molding machine 500, the copper bar feeding rack 400 is installed on one side of the injection molding machine 500, and the copper bar 100 is conveyed into the injection cavity of the injection molding machine 500 through the copper bar feeding rack 400. In actual work, the copper bar feeding rack 400 indirectly conveys the copper bar 100 into the injection molding machine 500 and accurately conveys it into the copper bar placing groove 511 of the micro-injection full hot runner mold for USB core integrated injection molding, and then injection molding is performed into the micro-injection full hot runner mold for USB core integrated injection molding through the injection molding machine 500, realizing full-automatic injection molding of the core.

[0033] The above is the preferred embodiment of the application, but the application should not be limited to the embodiment and the content disclosed in the drawings, so any equivalent or modification completed without departing from the disclosed spirit of the application falls within the protection scope of the application.

Claims

1. A micro-injection full hot runner mold for integrally injection molding a USB core, characterized in that The utility model relates to a hot runner injection molding machine, which comprises a bottom sealing plate, a hot runner installation positioning plate mounted on the bottom sealing plate, a lower die seat mounted on the hot runner installation positioning plate, a connecting column for fixing the bottom sealing plate, the hot runner installation positioning plate and the lower die seat together, an upper die seat arranged above the lower die seat, a core plate mounted on the upper die seat, a pressing plate mounted on the core plate, a top plate mounted on the pressing plate, a connecting column for fixing the top plate, the pressing plate, the core plate and the upper die seat together, a hot runner forming module installed between the lower die seat and the upper die seat, the hot runner forming module comprising two rubber core forming modules arranged in parallel and spaced apart, each rubber core forming module comprising a hot runner forming seat arranged on the lower die seat, two copper bar placement grooves arranged in parallel and spaced apart on the hot runner forming seat, a hot runner outlet arranged on the center line between the two copper bar placement grooves, a hot runner outlet plate mounted on the top of the hot runner outlet, a pressing plate mounted above the hot runner outlet plate, the pressing plate being connected to the hot runner outlet plate through a connecting column, the top of the pressing plate being fixed to the bottom of the pressing plate, and a rubber core forming module being installed at the bottom of the upper die seat and on one side of the copper bar placement groove. A hot runner control connector module is mounted on the front side of the hot runner installation positioning plate, the hot runner control connector module comprising a mounting plate fixed to the front side of the hot runner installation positioning plate, control valves mounted on the left and right sides of the mounting plate, two control valves being connected to the hot runner distributors mounted in the two distributor installation grooves through pipelines, temperature sensors and pressure sensors being mounted on the hot runner distributors, and a plurality of hot runner control connectors arranged in parallel and spaced apart being mounted on the front side of the mounting plate, the hot runner control connectors being electrically connected to the temperature sensors and the pressure sensors mounted on the hot runner distributors.

2. The micro injection full hot runner mold for the USB core one body injection molding of claim 1, wherein: A plurality of buffers are mounted between the upper die seat and the pressing plate, the top of each buffer being fixedly connected to the pressing plate, and the bottom of each buffer being connected to the upper die seat along the longitudinal direction.

3. The micro injection full hot runner mold for the USB core one body injection molding of claim 1, wherein: Guide sleeves are arranged at the four corners of the core plate and the upper die seat in communication, and guide columns protruding upward are arranged on the lower die seat, the guide sleeves being sleeved on the guide columns.

4. The micro injection full hot runner mold for the USB core one body injection molding of claim 1, wherein: Two pressing plate through grooves are arranged on the core plate, the pressing plate being fixed to the pressing plate after penetrating the pressing plate through grooves, and springs being mounted between the pressing plate and the hot runner outlet plate.

5. The micro injection full hot runner mold for the USB core one body injection molding of claim 1, wherein: The utility model relates to a hot runner injection molding machine, which comprises a bottom sealing plate, a hot runner installation positioning plate mounted on the bottom sealing plate, a lower die seat mounted on the hot runner installation positioning plate, a connecting column for fixing the bottom sealing plate, the hot runner installation positioning plate and the lower die seat together, an upper die seat arranged above the lower die seat, a core plate mounted on the upper die seat, a pressing plate mounted on the core plate, a top plate mounted on the pressing plate, a connecting column for fixing the top plate, the pressing plate, the core plate and the upper die seat together, a hot runner forming module installed between the lower die seat and the upper die seat, the hot runner forming module comprising two rubber core forming modules arranged in parallel and spaced apart, each rubber core forming module comprising a hot runner forming seat arranged on the lower die seat, two copper bar placement grooves arranged in parallel and spaced apart on the hot runner forming seat, a hot runner outlet arranged on the center line between the two copper bar placement grooves, a hot runner outlet plate mounted on the top of the hot runner outlet, a pressing plate mounted above the hot runner outlet plate, the pressing plate being connected to the hot runner outlet plate through a connecting column, the top of the pressing plate being fixed to the bottom of the pressing plate, and a rubber core forming module being installed at the bottom of the upper die seat and on one side of the copper bar placement groove.

6. A micro-injection full hot runner injection molding apparatus for integrally injection molding a USB core, characterized by A hot runner control connector module is mounted on the front side of the hot runner installation positioning plate, the hot runner control connector module comprising a mounting plate fixed to the front side of the hot runner installation positioning plate, control valves mounted on the left and right sides of the mounting plate, two control valves being connected to the hot runner distributors mounted in the two distributor installation grooves through pipelines, temperature sensors and pressure sensors being mounted on the hot runner distributors, and a plurality of hot runner control connectors arranged in parallel and spaced apart being mounted on the front side of the mounting plate, the hot runner control connectors being electrically connected to the temperature sensors and the pressure sensors mounted on the hot runner distributors. A plurality of buffers are mounted between the upper die seat and the pressing plate, the top of each buffer being fixedly connected to the pressing plate, and the bottom of each buffer being connected to the upper die seat along the longitudinal direction. Guide sleeves are arranged at the four corners of the core plate and the upper die seat in communication, and guide columns protruding upward are arranged on the lower die seat, the guide sleeves being sleeved on the guide columns. Two pressing plate through grooves are arranged on the core plate, the pressing plate being fixed to the pressing plate after penetrating the pressing plate through grooves, and springs being mounted between the pressing plate and the hot runner outlet plate. The utility model relates to a hot runner injection molding machine, which comprises a bottom sealing plate, a hot runner installation positioning plate mounted on the bottom sealing plate, a lower die seat mounted on the hot runner installation positioning plate, a connecting column for fixing the bottom sealing plate, the hot runner installation positioning plate and the lower die seat together, an upper die seat arranged above the lower die seat, a core plate mounted on the upper die seat, a pressing plate mounted on the core plate, a top plate mounted on the pressing plate, a connecting column for fixing the top plate, the pressing plate, the core plate and the upper die seat together, a hot runner forming module installed between the lower die seat and the upper die seat, the hot runner forming module comprising two rubber core forming modules arranged in parallel and spaced apart, each rubber core forming module comprising a hot runner forming seat arranged on the lower die seat, two copper bar placement grooves arranged in parallel and spaced apart on the hot runner forming seat, a hot runner outlet arranged on the center line between the two copper bar placement grooves, a hot runner outlet plate mounted on the top of the hot runner outlet, a pressing plate mounted above the hot runner outlet plate, the pressing plate being connected to the hot runner outlet plate through a connecting column, the top of the pressing plate being fixed to the bottom of the pressing plate, and a rubber core forming module being installed at the bottom of the upper die seat and on one side of the copper bar placement groove. The micro-injection full hot runner mold for the integrated injection molding of the USB rubber core according to any one of claims 1-5 further comprises a copper bar feeding rack and an injection molding machine, the micro-injection full hot runner mold for the integrated injection molding of the USB rubber core is installed in the injection molding cavity of the injection molding machine, the copper bar feeding rack is installed on one side of the injection molding machine, and the copper bar is conveyed into the injection molding cavity of the injection molding machine through the copper bar feeding rack.

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