A side-injection hot runner system

Abstract

The invention discloses a lateral glue-feeding hot runner system, which comprises a lateral fixed plate, a fixed mold runner plate, an intermediate support plate and a fixed mold plate which are stacked in sequence from left to right, a diverter plate is fixed in the fixed mold runner plate, a central glue injection nozzle is provided at the center of the lateral fixed plate, a diverter plate glue inlet connected to the central glue injection nozzle is provided at the center of the left side of the diverter plate, a plurality of diverter channels connected to the diverter plate glue inlet are provided in the diverter plate, a plurality of diverter plate glue outlets are provided on the right side of the diverter plate, a plurality of hot nozzles are provided in the intermediate support plate, the hot nozzles correspond to the diverter plate glue outlets one by one, a diverter connection block is provided at the right end outlet of the hot nozzle, two branch runners are provided in the diverter connection block, two end glue injection nozzles are provided at the adjacent parts of the diverter connection block, and the two end glue injection nozzles are respectively connected to the outlets of the two branch runners, and a plurality of cavities are provided in the fixed mold plate. The invention can realize lateral glue feeding and improve production efficiency.

Description

Technical Field

[0001] The invention relates to a mold, in particular to a lateral glue-feeding hot runner system. Background Art

[0002] Plastic workpiece products generally need to be processed and formed by injection molding, and the injection mold is an indispensable core mechanism to complete the injection molding process. In the existing injection molds, most of them are injected from the top, and the injection molding process is realized by diverting and injecting from top to bottom. However, for different processing occasions, it is sometimes necessary to configure a side injection processing technology, but the existing injection molds lack the side injection function. In addition, in the existing injection molds, the hot nozzles generally correspond to one cavity. During the processing, each hot nozzle can only process a single workpiece, resulting in low production efficiency and difficulty in meeting production requirements. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an injection mold which can realize lateral gluing and improve production efficiency in view of the deficiencies of the prior art.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions.

[0005] A lateral glue inlet hot runner system, comprising a lateral fixed plate, a fixed mold runner plate, an intermediate support plate and a fixed mold plate which are stacked in sequence from left to right, a diverter plate is fixed in the fixed mold runner plate, a central glue injection nozzle is arranged at the center of the lateral fixed plate, a diverter plate glue inlet connected to the central glue injection nozzle is arranged at the center of the left side of the diverter plate, a plurality of diverter channels connected to the diverter plate glue inlet are opened in the diverter plate, a plurality of diverter plate glue outlets are opened on the right side of the diverter plate, the diverter plate glue outlets correspond to the diverter channels one by one and are connected to each other, the intermediate support plate A plurality of hot nozzles are provided in the support plate, and the hot nozzles correspond one-to-one to the glue outlets of the diverter plate, and the left end inlet of the hot nozzle is connected to the glue outlet of the diverter plate, and the right end outlet of the hot nozzle is provided with a diverter connection block, and two branch flow channels are opened in the diverter connection block, and the inlets of the two branch flow channels are both connected to the outlet of the hot nozzle, and two end glue injection nozzles are provided at adjacent parts of the diverter connection block, and the two end glue injection nozzles are respectively connected to the outlets of the two branch flow channels, and a plurality of cavities are provided in the fixed template, and the end glue injection nozzles correspond one-to-one to the cavities and are connected to each other.

[0006] Preferably, the left end of the hot nozzle is fixedly connected to the diverter plate, a connecting sleeve is provided on the hot nozzle, the left end of the connecting sleeve is tightly fitted to the diverter plate, and the fitting surfaces of the two are sealed to each other.

[0007] Preferably, a connecting pipe is provided between the hot nozzle and the diversion connecting block, the left and right ends of the connecting pipe are respectively inserted into the hot nozzle and the diversion connecting block, and the connecting pipe is connected between the outlet of the hot nozzle and the inlet of the branch flow channel.

[0008] Preferably, the connection between the connecting pipe and the hot nozzle is sealed to each other, and the connection between the connecting pipe and the diverter connecting block is sealed to each other.

[0009] Preferably, two adapter blocks are provided at the right end of the diversion connection block, and two end injection nozzles are symmetrically arranged at the upper and lower ends of the two adapter blocks. A adapter flow channel is opened in the adapter block, and the adapter flow channel is connected between the branch flow channel and the end injection nozzle.

[0010] Preferably, the connection between the adapter block and the diversion connection block is sealed to each other, and the connection between the adapter block and the end glue injection nozzle is sealed to each other.

[0011] In the lateral glue feeding hot runner system disclosed in the present invention, the lateral fixed plate, the fixed mold runner plate, the middle support plate and the fixed mold plate are stacked in sequence from left to right to form a mold shell mechanism, and the molten plastic injected by the central glue injection nozzle is diverted by using multiple diversion channels opened in the diversion plate, and then the molten plastic is introduced into the cavity through multiple transversely arranged hot nozzles. The above structure preferably adopts a transversely arranged and lateral glue feeding method, which better meets the process requirements of lateral glue feeding during injection molding production. In addition, the present invention sets a diversion connection block at the right end of the hot nozzle, and each diversion connection block can be connected to two end glue injection nozzles, thereby realizing that each hot nozzle can provide molten plastic to two cavities at the same time, greatly improving the efficiency of injection molding processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the side-injection hot runner system;

[0013] Figure 2 It is a structural diagram of the manifold, the hot nozzle and the manifold connection block;

[0014] Figure 3 for Figure 2 A magnified view of part A;

[0015] Figure 4 for Figure 2 A magnified view of part B;

[0016] Figure 5 It is a structural diagram of a shunt connection block, a plurality of transfer blocks and a plurality of end injection nozzles;

[0017] Figure 6 This is a structural diagram of the adapter block, top block and end glue injection nozzle. DETAILED DESCRIPTION

[0018] It should be noted that the directional words such as "up, down, left, right, front, and back" involved in the present invention are only used to more clearly describe the positional relationship between the components, and are not used to limit the installation direction of the present invention. Therefore, any directional changes made on the basis of the technical solution of the present invention should be included in the protection scope of the present invention.

[0019] The present invention is described in more detail below with reference to the accompanying drawings and embodiments.

[0020] Embodiment 1

[0021] This embodiment proposes a side-injection hot runner system, combined with Figures 1 to 4 As shown, it includes a lateral fixed plate 1, a fixed mold runner plate 2, an intermediate support plate 3 and a fixed mold plate 4 which are stacked in sequence from left to right, a diverter plate 5 is fixed in the fixed mold runner plate 2, a central glue injection nozzle 10 is provided at the center of the lateral fixed plate 1, a diverter plate glue inlet 50 connected to the central glue injection nozzle 10 is provided at the center of the left side of the diverter plate 5, a plurality of diverter channels 51 connected to the diverter plate glue inlet 50 are provided in the diverter plate 5, a plurality of diverter plate glue outlets 52 are provided on the right side of the diverter plate 5, the diverter plate glue outlets 52 correspond to the diverter channels 51 one by one and are connected to each other, and a diverter plate glue outlet 52 is provided in the intermediate support plate 3. A plurality of hot nozzles 6 are provided, and the hot nozzles 6 correspond one-to-one to the glue outlet 52 of the diverter plate, and the left end inlet of the hot nozzle 6 is connected to the glue outlet 52 of the diverter plate, and the right end outlet of the hot nozzle 6 is provided with a diverter connection block 7, and two branch flow channels 70 are opened in the diverter connection block 7, and the inlets of the two branch flow channels 70 are both connected to the outlet of the hot nozzle 6, and two end glue injection nozzles 8 are provided adjacent to the diverter connection block 7, and the two end glue injection nozzles 8 are respectively connected to the outlets of the two branch flow channels 70, and a plurality of cavities 40 are provided in the fixed mold plate 4, and the end glue injection nozzles 8 correspond one-to-one to the cavities 40 and are connected to each other.

[0022] In the above structure, the lateral fixing plate 1, the fixed mold runner plate 2, the middle support plate 3 and the fixed mold plate 4 are stacked from left to right in sequence to form a mold shell mechanism, and the molten plastic injected by the central injection nozzle 10 is diverted by using multiple diverter channels 51 opened in the diverter plate 5, and then the molten plastic is introduced into the mold cavity through multiple transversely arranged hot nozzles 6. The above structure preferably adopts a transversely arranged and lateral injection method, which better meets the process requirements of lateral injection during injection molding production. In addition, the present invention sets a diverter connection block 7 at the right end of the hot nozzle 6, and each diverter connection block 7 can be connected to two end injection nozzles 8, thereby realizing that each hot nozzle 6 can provide molten plastic to two mold cavities at the same time, greatly improving the efficiency of injection molding. In addition, the present invention can realize lateral glue feeding and eliminate the generation of plastic sprue material during the production process, which can directly save nearly 18% of plastic raw materials, and help reduce injection molding pressure, ensuring uniform glue flow in each cavity, greatly improving automated production performance. Compared with traditional processes, the production efficiency of the present invention can be increased by 25%.

[0023] In order to achieve stable connection and sealing, in this embodiment, the left end of the hot nozzle 6 is fixedly connected to the diverter plate 5, and a connecting sleeve 9 is provided on the hot nozzle 6. The left end of the connecting sleeve 9 fits tightly with the diverter plate 5, and the fitting surfaces of the two are sealed to each other.

[0024] In order to ensure that the hot nozzle 6 is reliably connected to the diverter connecting block 7, in this embodiment, a connecting pipe 11 is provided between the hot nozzle 6 and the diverter connecting block 7, and the left and right ends of the connecting pipe 11 are respectively inserted into the hot nozzle 6 and the diverter connecting block 7, and the connecting pipe 11 is connected between the outlet of the hot nozzle 6 and the inlet of the branch flow channel 70.

[0025] As a preferred embodiment, the connection between the connecting pipe 11 and the hot nozzle 6 is sealed to each other, and the connection between the connecting pipe 11 and the diverter connecting block 7 is sealed to each other.

[0026] This embodiment preferably adopts an upper and lower diversion method at the end, specifically, two adapter blocks 71 are provided at the right end of the diversion connection block 7, and two terminal glue injection nozzles 8 are symmetrically arranged at the upper and lower ends of the two adapter blocks 71. A transfer channel 72 is opened in the adapter block 71, and the transfer channel 72 is connected between the branch channel 70 and the terminal glue injection nozzle 8.

[0027] As a preferred embodiment, the connection between the adapter block 71 and the diversion connection block 7 is sealed to each other, and the connection between the adapter block 71 and the end glue injection nozzle 8 is sealed to each other.

[0028] Embodiment 2

[0029] This embodiment proposes a hot nozzle rear end connection mechanism, combined with Figure 2 and Figure 3 As shown, it includes a diverter plate 5 and a hot nozzle 6, a nozzle seat 60 is fixed to the left end of the hot nozzle 6, the diameter of the nozzle seat 60 is larger than the diameter of the hot nozzle 6, the nozzle seat 60 is fixedly connected to the diverter plate 5, a plurality of diverter plate glue outlets 52 are provided on the right side of the diverter plate 5, a nozzle flow channel 61 is provided in the hot nozzle 6, an inner flow channel 62 is provided in the nozzle seat 60, the diverter plate glue outlet 52, the inner flow channel 62 and the nozzle flow channel 61 are connected in sequence, the outer side wall of the hot nozzle 6 is formed with a nozzle spacer ring 64 protruding outward, and the outer side of the nozzle spacer ring 64 is provided with a reinforcing The left end of the reinforcing sleeve 63 is arranged opposite to the nozzle seat 60, and the left end of the nozzle spacer ring 64 is formed with a conical side wall 640. A screw 65 is passed through the reinforcing sleeve 63 and the two are screwed together. The end of the screw 65 is arranged opposite to the conical side wall 640. When the screw 65 is screwed inward, the end of the screw 65 presses against the conical side wall 640. Through the cooperation of the screw 65 and the conical side wall 640, a tendency force for the reinforcing sleeve 63 to shift to the left is provided, thereby driving the left end of the reinforcing sleeve 63 to fit tightly against the nozzle seat 60.

[0030] In the above structure, the nozzle seat 60 is fixed to the left end of the hot nozzle 6 by screws. On this basis, the present invention sleeves the reinforcing sleeve 63 on the outside of the hot nozzle 6, and makes the nozzle spacer ring 64 seal and cooperate with the reinforcing sleeve 63. Because the left end of the nozzle spacer ring 64 is formed with a conical side wall 640, when the screw 65 inserted through the reinforcing sleeve 63 is screwed inward, the end of the screw 65 abuts and cooperates with the conical side wall 640, and a thrust is applied to the conical side wall 640. The reaction force provided by the conical side wall 640 drives the reinforcing sleeve 63 to shift to the left and fit tightly to the nozzle seat 60. Based on the above principle, it can be seen that the present invention can not only ensure the reliable connection between the nozzle seat 60 and the hot nozzle 6, but also further strengthen the connection between the two through the reinforcing sleeve 63, and play a sealing role at the connection between the two, thereby preventing glue leakage, and better meeting the production requirements.

[0031] Furthermore, three screws 65 are provided on the reinforcing sleeve 63 , and the three screws 65 are evenly distributed along the circumference of the reinforcing sleeve 63 .

[0032] As a preferred embodiment, the screw 65 is a machine screw.

[0033] In order to facilitate the disassembly and assembly of the reinforcing sleeve 63, in this embodiment, the cross-section of the nozzle spacer ring 64 is trapezoidal.

[0034] Embodiment 3

[0035] In practical applications, the injection mold generally includes a hot nozzle. If it is necessary to divert the flow at the front outlet of the hot nozzle, a diverter connection block needs to be provided, and the front outlet of the hot nozzle is fixedly connected and sealed with the diverter connection block. Under the existing connection method, after the front outlet of the hot nozzle is aligned with the inlet of the diverter connection block, they can be fixedly connected by screws, but this connection method cannot ensure direct and reliable sealing between the two, so it is easy to leak glue during the injection molding process, and therefore cannot meet production requirements.

[0036] In this regard, this embodiment proposes a sealing connection mechanism for the front end of the hot nozzle, combined with Figure 2 and Figure 4 As shown, it includes a hot nozzle 6, a flow splitter connection block 7 and a hollow connection pipe 11, the left end of the flow splitter connection block 7 is provided with a flow splitter threaded opening 700, the right end of the connection pipe 11 is arranged in the flow splitter threaded opening 700 and the two are screwed together, the hot nozzle 6 is provided with a nozzle flow channel 61, the right end opening of the nozzle flow channel 61 is formed with a nozzle threaded opening 610, the right end of the nozzle threaded opening 610 is formed with a tapered opening 611, the left end opening diameter of the tapered opening 611 is the same as that of the nozzle threaded opening 610, and the right end of the tapered opening 611 is the same as that of the nozzle threaded opening 610. The nozzle threaded opening 610 has the same diameter, the right end opening diameter of the tapered opening 611 is larger than the left end opening diameter, the connecting pipe 11 includes a tapered tube body 110, and a threaded tube body 111 is formed at the left end of the tapered tube body 110. The outer wall taper of the tapered tube body 110 is the same as the inner wall taper of the tapered opening 611. The threaded tube body 111 is screwed into the nozzle threaded opening 610, and the outer wall of the tapered tube body 110 is tightly fitted with the inner wall of the tapered opening 611.

[0037] In the above structure, the right end of the connecting pipe 11 is screwed into the flow dividing threaded opening 700 at the left end of the flow dividing connecting block 7, so that the connecting pipe 11 is tightly matched with the flow dividing connecting block 7. For the left end of the connecting pipe 11, the conical tube body 110 and the threaded tube body 111 are sequentially arranged. In the process of screwing with the hot nozzle 6, the threaded tube body 111 is first aligned with the nozzle threaded opening 610. At this time, the conical tube body 110 is located in the conical opening 611, and the threaded tube body 111 is aligned with the nozzle threaded opening 610. During the process of screwing into the threaded opening 610 of the nozzle, the conical tube body 110 gradually abuts against the conical opening 611 until the sealing requirement is met. Compared with the prior art, the present invention can not only realize the reliable connection between the connecting tube 11 and the hot nozzle 6, but also enhance the tightness of the connection between the two through the cooperation of the conical surfaces of the conical tube body 110 and the conical opening 611, thereby greatly improving the sealing performance of the front end connection of the hot nozzle, thereby avoiding glue leakage and better meeting the production requirements.

[0038] In this embodiment, the side of the connecting tube 11 is formed with an annular shoulder 112 protruding outward, and the annular shoulder 112 is located between the hot nozzle 6 and the flow-dividing connecting block 7. In order to facilitate the application of torque to the connecting tube 11, a wrench position can be provided on the annular shoulder 112, or the annular shoulder 112 can be directly provided as a hexagonal nut structure, so as to cooperate with the wrench.

[0039] During the process of inserting the connecting pipe 11 into the conical mouth 611 and the nozzle threaded mouth 610, in order to avoid the connection pipe 11 from colliding with the corner between the conical mouth 611 and the nozzle threaded mouth 610, the present embodiment preferably adopts an air avoidance structure, specifically, an annular air avoidance groove 113 is formed at the connection between the conical tube body 110 and the threaded tube body 111.

[0040] Embodiment 4

[0041] In practical applications, the injection mold requires a glue injection nozzle to inject molten plastic into the mold cavity. When one hot nozzle corresponds to two glue injection nozzles, a diversion connection block is needed to divert the molten plastic output by the hot nozzle. In order to avoid glue leakage, the end glue injection nozzle needs to be reliably connected and sealed with the diversion block. However, due to the small size of the glue injection nozzle and the difficulty in fixing it, it is difficult to achieve a reliable connection between the glue injection nozzle and the diversion block. Therefore, how to ensure that the glue injection nozzle and the diversion block are closely matched and sealed with each other is a technical problem that needs to be solved in the prior art.

[0042] In this regard, this embodiment proposes a symmetrical tightening mechanism for the injection nozzle of the injection mold, combined with Figure 2 , Figure 4 , Figure 5 and Figure 6As shown, it includes a shunt connection block 7 and two end injection nozzles 8, the right end of the shunt connection block 7 is provided with two adapter blocks 71, the two end injection nozzles 8 are symmetrically arranged at the upper and lower ends of the two adapter blocks 71, the shunt connection block 7 is provided with two branch flow channels 70, the adapter block 71 is provided with a transfer flow channel 72, the transfer flow channel 72 is connected between the branch flow channels 70 and the end injection nozzles 8, the side of the adapter block 71 is formed with an inner bevel 710, and the inner bevel 710 of the two adapter blocks 71 is arranged oppositely, and a top block 711 is provided between the two adapter blocks 71, and the upper and lower sides of the top block 711 are respectively An outer bevel portion 712 is formed, and the outer bevel portion 712 is aligned with the inner bevel portion 710 one by one and abuts against each other. A locking bolt 720 is passed through the top block 711, and the nut of the locking bolt 720 is clamped at the right end of the top block 711. The locking bolt 720 is screwed into the diversion connection block 7. When the locking bolt 720 is screwed, the locking bolt 720 applies a thrust to the top block 711, and the abutment between the outer bevel portion 712 and the inner bevel portion 710 provides a tendency force for the two adapter blocks 71 to move outward, thereby driving the adapter block 71 to fit tightly with the end injection nozzle 8.

[0043] In the above structure, two adapter blocks 71 are arranged at the right end of the shunt connection block 7, and a top block 711 is arranged between the two adapter blocks 71. The top block 711 and the shunt connection block 7 are connected by the locking bolt 720. On this basis, inner inclined surface parts 710 are formed on the opposite sides of the two adapter blocks 71, and outer inclined surface parts 712 are formed on the upper and lower sides of the top block 711. When the locking bolt 720 is tightened, the locking bolt 720 drives the top block 711 to move leftward, and the outer inclined surface part 712 abuts and cooperates with the inner inclined surface part 710, and moves to the The inner inclined surface 710 applies a thrust, so that the two adapter blocks 71 are pushed outward during the advancement of the top block 711. Since the two end glue injection nozzles 8 are symmetrically abutted against the upper and lower ends of the two adapter blocks 71, the adapter block 71 and the end glue injection nozzles 8 can be tightly matched under the force applied by the top block 711. Due to the continuous existence of internal stress, the adapter block 71 and the end glue injection nozzles 8 are kept in a sealed state, which not only makes the connection between the end glue injection nozzles 8 and the adapter block 71 tighter, but also can effectively avoid glue leakage, thereby better meeting the injection molding production requirements.

[0044] As a preferred embodiment, a plurality of transverse grooves 713 are provided on the outer inclined surface 712. One function of the plurality of transverse grooves 713 is to reduce heat loss so that the heat of the adapter block 71 is sufficient; another function is to reduce the contact area between the top block 711 and the adapter block 71, thereby ensuring that the top block 711 is reliably pushed to the left.

[0045] In order to facilitate the insertion of the top block 711 and avoid collision during the insertion process, in this embodiment, an avoidance step opening 714 is opened at the right end edge of the inner inclined surface portion 710.

[0046] In order to play a positioning role between the adapter block 71 and the shunt connection block 7, in this embodiment, a positioning pin 73 is provided between the adapter block 71 and the shunt connection block 7, and the two ends of the positioning pin 73 are respectively inserted into the shunt connection block 7 and the adapter block 71.

[0047] As a preferred embodiment, four positioning pins 73 are inserted between the adapter block 71 and the shunt connection block 7 .

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the technical scope of the present invention should be included in the scope of protection of the present invention.

Claims

1. A side-injection hot runner system, characterized in that: The invention comprises a lateral fixed plate, a fixed mold runner plate, an intermediate support plate and a fixed mold plate which are stacked in sequence from left to right, a diverter plate is fixed in the fixed mold runner plate, a central glue injection nozzle is arranged at the center of the lateral fixed plate, a diverter plate glue inlet connected to the central glue injection nozzle is arranged at the center of the left side of the diverter plate, a plurality of diverter channels connected to the diverter plate glue inlet are arranged in the diverter plate, a plurality of diverter plate glue outlets are arranged on the right side of the diverter plate, the diverter plate glue outlets correspond to the diverter channels one by one and are connected to each other, a plurality of diverter plates are passed through the intermediate support plate A hot nozzle, the hot nozzle corresponds to the glue outlet of the manifold plate one-to-one, and the left end inlet of the hot nozzle is connected to the glue outlet of the manifold plate, the right end outlet of the hot nozzle is provided with a diversion connection block, two branch flow channels are opened in the diversion connection block, the inlets of the two branch flow channels are both connected to the outlet of the hot nozzle, two terminal injection nozzles are provided at the adjacent part of the diversion connection block, and the two terminal injection nozzles are respectively connected to the outlets of the two branch flow channels, a plurality of cavities are provided in the fixed template, the terminal injection nozzles correspond to the cavities one-to-one and are connected to each other; A connecting pipe is provided between the hot nozzle and the flow-dividing connecting block, the left and right ends of the connecting pipe are respectively inserted into the hot nozzle and the flow-dividing connecting block, and the connecting pipe is connected between the outlet of the hot nozzle and the inlet of the branch flow channel; Two adapter blocks are provided at the right end of the flow-dividing connection block, and two end glue injection nozzles are symmetrically arranged at the upper and lower ends of the two adapter blocks. A transfer flow channel is opened in the adapter block, and the transfer flow channel is connected between the branch flow channel and the end glue injection nozzle; A nozzle seat is fixed at the left end of the hot nozzle, the diameter of the nozzle seat is larger than the diameter of the hot nozzle, the nozzle seat is fixedly connected to the manifold, a plurality of manifold glue outlets are provided on the right side of the manifold, a nozzle flow channel is provided in the hot nozzle, an inner flow channel is provided in the nozzle seat, the manifold glue outlet, the inner flow channel of the seat and the nozzle flow channel are connected in sequence, an outer wall of the hot nozzle is formed with a nozzle spacer ring protruding outward, a reinforcing sleeve is provided on the outer side of the nozzle spacer ring and the two are connected Sealing fit, the left end of the reinforcing sleeve is arranged opposite to the nozzle seat, the left end of the nozzle spacer ring is formed with a conical side wall, a screw is passed through the reinforcing sleeve and the two are screwed together, the end of the screw is arranged opposite to the conical side wall, when the screw is screwed inward, the end of the screw is pressed against the conical side wall, and the cooperation between the screw and the conical side wall provides a tendency force for the reinforcing sleeve to shift to the left, thereby driving the left end of the reinforcing sleeve to fit closely to the nozzle seat; The left end of the flow-dividing connection block is provided with a flow-dividing threaded opening, the right end of the connecting pipe is arranged in the flow-dividing threaded opening and the two are screwed together, a nozzle flow channel is provided in the hot nozzle, a nozzle threaded opening is formed at the right end opening of the nozzle flow channel, a tapered opening is formed at the right end of the nozzle threaded opening, the left end opening diameter of the tapered opening is the same as the diameter of the nozzle threaded opening, the right end opening diameter of the tapered opening is larger than the left end opening diameter, the connecting pipe includes a tapered tube body, the left end of the tapered tube body is formed with a threaded tube body, the outer wall taper of the tapered tube body is the same as the inner wall taper of the tapered opening, the threaded tube body is screwed into the nozzle threaded opening, and the outer wall of the tapered tube body is tightly fitted with the inner wall of the tapered opening; An annular air-avoiding groove is formed at the connection between the conical tube body and the threaded tube body; The side of the adapter block is formed with an inner inclined surface, and the inner inclined surfaces of the two adapter blocks are arranged opposite to each other, a top block is provided between the two adapter blocks, and the upper and lower sides of the top block are respectively formed with outer inclined surfaces, the outer inclined surfaces are aligned one by one with the inner inclined surfaces and abut against each other, a locking bolt is passed through the top block, the nut of the locking bolt is clamped at the right end of the top block, and the locking bolt is screwed into the diversion connecting block. When the locking bolt is screwed, the locking bolt applies a thrust to the top block, and the abutment cooperation between the outer inclined surface and the inner inclined surface provides a tendency force for the two adapter blocks to move outward, thereby driving the adapter block to fit tightly with the end injection nozzle.

2. The side-injection hot runner system according to claim 1, characterized in that: The left end of the hot nozzle is fixedly connected to the diverter plate. A connecting sleeve is sleeved on the hot nozzle. The left end of the connecting sleeve is tightly fitted to the diverter plate, and the fitting surfaces of the two are sealed to each other.

3. The side-injection hot runner system according to claim 1, characterized in that: The connection between the connecting pipe and the hot nozzle is sealed to each other, and the connection between the connecting pipe and the flow-dividing connecting block is sealed to each other.

4. The side-injection hot runner system according to claim 1, characterized in that: The connection between the adapter block and the flow-dividing connection block is sealed to each other, and the connection between the adapter block and the end glue injection nozzle is sealed to each other.

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