CN213919411U - Rear end connecting mechanism of hot nozzle - Google Patents

Abstract

The utility model discloses a rear end connecting mechanism of a hot nozzle, which comprises a splitter plate and a hot nozzle, wherein a nozzle seat is fixed at the left end of the hot nozzle, the diameter of the nozzle seat is larger than that of the hot nozzle, the nozzle seat is fixedly connected with the splitter plate, a plurality of splitter plate glue outlets are arranged at the right side of the splitter plate, a nozzle runner is arranged in the hot nozzle, an in-seat runner and a splitter plate glue outlet are arranged in the nozzle seat, the seat inner flow channel and the nozzle flow channel are communicated in sequence, the outer side wall of the hot nozzle is provided with an outwards convex nozzle spacer ring, the outer side sleeve of the nozzle spacer ring is provided with a reinforcing sleeve and the sealing fit of the reinforcing sleeve and the nozzle seat, the left end of the reinforcing sleeve is arranged opposite to the nozzle seat, the left end of the nozzle spacer ring is provided with a conical side wall, the reinforcing sleeve is provided with a screw and the screw are screwed together, the end part of the screw is arranged opposite to the conical side wall, and when the screw is screwed in inwards, the left end of the reinforcing sleeve is tightly attached to the nozzle seat. The utility model discloses can guarantee that hot nozzle rear end junction is reliably sealed.

Description

Rear end connecting mechanism of hot nozzle

Technical Field

The utility model relates to a mould especially relates to a rear end coupling mechanism is chewed to hot spout.

Background

The plastic workpiece product generally needs to be processed and formed in an injection molding mode, and the injection mold is an essential core mechanism for completing injection molding. In practical application, an injection mold generally comprises a splitter plate and a hot nozzle, an end inlet of the hot nozzle needs to be communicated with a glue outlet of the splitter plate, the end inlet of the hot nozzle is aligned with the glue outlet of the splitter plate in a common connection mode, and then a nozzle base fixedly arranged at the end of the hot nozzle is fastened with the splitter plate through a bolt, wherein the nozzle base and the hot nozzle also need a screw for fixed connection, but the joint surface between the nozzle base and the hot nozzle is difficult to guarantee complete sealing, glue leakage is easy to occur at the joint of the hot nozzle and the nozzle base, the integral performance of the mold is insufficient, and the production requirement is difficult to meet.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's not enough, a can guarantee the reliable sealed hot nozzle rear end coupling mechanism of hot nozzle rear end junction is provided.

In order to solve the technical problem, the utility model adopts the following technical scheme.

A hot nozzle rear end connecting mechanism comprises a flow distribution plate and a hot nozzle, wherein a nozzle seat is fixed at the left end of the hot nozzle, the diameter of the nozzle seat is larger than that of the hot nozzle, the nozzle seat is fixedly connected with the flow distribution plate, a plurality of flow distribution plate glue outlets are formed in the right side of the flow distribution plate, a nozzle flow passage is formed in the hot nozzle, an inner seat flow passage is formed in the nozzle seat, the flow distribution plate glue outlets, the inner seat flow passage and the nozzle flow passage are sequentially communicated, a nozzle separation ring protruding outwards is formed on the outer side wall of the hot nozzle, a reinforcing sleeve is sleeved on the outer side of the nozzle separation ring and is in sealing fit with the reinforcing sleeve, the left end of the reinforcing sleeve is opposite to the nozzle seat, a conical side wall is formed at the left end of the nozzle separation ring, a screw penetrates through the reinforcing sleeve and is screwed with the reinforcing sleeve, and the end of the screw is opposite to the conical side wall, when the screw is screwed in, the end part of the screw is tightly pressed against the conical side wall, and the screw is matched with the conical side wall to provide a force of shifting leftwards for the reinforcing sleeve, so that the left end of the reinforcing sleeve is driven to be tightly attached to the nozzle seat.

Preferably, 3 screws penetrate through the reinforcing sleeve, and the 3 screws are uniformly distributed along the circumferential direction of the reinforcing sleeve.

Preferably, the screw is a screw.

Preferably, the nozzle spacer ring is trapezoidal in cross-section.

The utility model discloses an among the hot nozzle rear end coupling mechanism, the nozzle seat passes through the screwed fixation in the left end of hot nozzle, on this basis, the utility model discloses the strengthening sleeve is cup jointed in the outside of hot nozzle, makes simultaneously the nozzle spacer ring with the sealed cooperation of strengthening sleeve, because of the left end of nozzle spacer ring is formed with the taper lateral wall, so when wearing to locate strengthening sleeve's screw is when inwards revolving, the tip of screw with taper lateral wall butt cooperation, simultaneously to thrust is applyed to the taper lateral wall, borrows by the reaction force that the taper lateral wall provided orders about strengthening sleeve shifts left and closely laminates in the nozzle seat. Based on the above principle, the utility model discloses not only can guarantee the nozzle seat with hot spout is chewed reliably and is connected, can also pass through strengthen the sleeve pipe and further strengthen the relation of connection of the two to play sealed effect in the junction of the two, thereby prevent that the glue leakage condition from taking place, satisfied the production requirement betterly.

Drawings

FIG. 1 is a cross-sectional view of a lateral glue injection mold;

FIG. 2 is a block diagram of a manifold, hot nozzle and manifold block;

FIG. 3 is an enlarged view of portion A of FIG. 2;

FIG. 4 is an enlarged view of portion B of FIG. 2;

FIG. 5 is a structural diagram of a shunt connecting block, a plurality of transfer blocks and a plurality of tail glue injection nozzles;

fig. 6 is a structural diagram of a transfer block, a top block and a tail glue injection nozzle.

Detailed Description

It should be noted that, the position words such as "upper, lower, left and right, front and back" that relate to in the utility model are only used for describing the position relation between the part more clearly, and are not used for limiting the utility model discloses an installation direction, consequently, the position change of making on the basis of the technical scheme of the utility model all should be when including within the scope of protection of the utility model.

The present invention will be described in more detail with reference to the accompanying drawings and examples.

Example one

The embodiment provides a thermal nozzle rear end connecting mechanism, which is shown in fig. 2 and 3, and comprises a splitter plate 5 and a thermal nozzle 6, wherein a nozzle seat 60 is fixed at the left end of the thermal nozzle 6, the diameter of the nozzle seat 60 is larger than that of the thermal nozzle 6, the nozzle seat 60 is fixedly connected with the splitter plate 5, a plurality of splitter plate glue outlets 52 are formed at the right side of the splitter plate 5, a nozzle runner 61 is formed in the thermal nozzle 6, an in-seat runner 62 is formed in the nozzle seat 60, the splitter plate glue outlets 52, the in-seat runner 62 and the nozzle runner 61 are sequentially communicated, a nozzle partition ring 64 protruding outwards is formed on the outer side wall of the thermal nozzle 6, a reinforcing sleeve 63 is sleeved on the outer side of the nozzle partition ring 64 and is in sealing fit with the nozzle partition ring 64, the left end of the reinforcing sleeve 63 is arranged opposite to the nozzle seat 60, a tapered side wall 640 is formed at the left end of the nozzle partition ring 64, the reinforcing sleeve 63 is provided with a screw 65 in a penetrating manner and the screw 65 is screwed with the screw 65, the end part of the screw 65 is opposite to the tapered side wall 640, when the screw 65 is screwed inwards, the end part of the screw 65 abuts against the tapered side wall 640, and by means of the matching of the screw 65 and the tapered side wall 640, the reinforcing sleeve 63 is provided with a tendency of leftward displacement, so that the left end of the reinforcing sleeve 63 is driven to be tightly attached to the nozzle seat 60.

In the structure, nozzle seat 60 passes through the screw fixation in hot nozzle 6's left end, on this basis, the utility model discloses hot nozzle 6's the outside is cup jointed enhancement sleeve 63, makes simultaneously nozzle spacer ring 64 with enhancement sleeve 63 is sealed to be cooperated, because of nozzle spacer ring 64's left end is formed with taper lateral wall 640, so when wearing to locate enhancement sleeve 63's screw 65 is inwards screwed in, screw 65's tip with taper lateral wall 640 butt cooperation, simultaneously to thrust is applyed to taper lateral wall 640, borrows by the reaction force that taper lateral wall 640 provided, orders about enhancement sleeve 63 shifts left and closely laminate in nozzle seat 60. Based on the above principle, it is visible, the utility model discloses not only can guarantee nozzle seat 60 with hot nozzle 6 reliably connects, can also pass through strengthen the connection of the two further to strengthen sleeve pipe 63 to play sealed effect in the junction of the two, thereby prevent that the glue leakage condition from taking place, satisfied the production requirement betterly.

Furthermore, 3 screws 65 penetrate through the reinforcing sleeve 63, and the 3 screws 65 are uniformly distributed along the circumferential direction of the reinforcing sleeve 63.

Preferably, the screw 65 is a screw.

In order to facilitate the detachment and installation of the reinforcing sleeve 63, in the present embodiment, the nozzle spacer 64 has a trapezoidal cross section.

Example two

The embodiment provides a lateral glue inlet injection mold, which is shown in fig. 1 to 4 and comprises a lateral fixing plate 1, a fixed mold runner plate 2, a middle support plate 3 and a fixed mold plate 4 which are sequentially stacked from left to right, wherein a splitter plate 5 is fixed in the fixed mold runner plate 2, a central glue injection nozzle 10 is arranged at the center of the lateral fixing plate 1, a splitter plate glue inlet 50 communicated with the central glue injection nozzle 10 is arranged at the center of the left side of the splitter plate 5, a plurality of splitter passages 51 communicated with the splitter plate glue inlet 50 are arranged in the splitter plate 5, a plurality of splitter plate glue outlets 52 are arranged at the right side of the splitter plate 5, the splitter plate glue outlets 52 are in one-to-one correspondence with the splitter passages 51 and are communicated with each other, a plurality of hot nozzles 6 are arranged in the middle support plate 3 in a penetrating manner, and the hot nozzles 6 are in one-to-one correspondence with the splitter plate glue outlets 52, and the inlet at the left end of the hot nozzle 6 is communicated with the glue outlet 52 of the splitter plate, the outlet at the right end of the hot nozzle 6 is provided with a splitter connecting block 7, two branch flow channels 70 are arranged in the splitter connecting block 7, the inlets of the two branch flow channels 70 are communicated with the outlet of the hot nozzle 6, two tail glue injection nozzles 8 are arranged at the adjacent positions of the splitter connecting block 7, the two tail glue injection nozzles 8 are respectively communicated with the outlets of the two branch flow channels 70, a plurality of cavities 40 are arranged in the fixed die plate 4, and the tail glue injection nozzles 8 are in one-to-one correspondence with the cavities 40 and are communicated with each other.

In the structure, the lateral fixing plate 1, the fixed die runner plate 2, the intermediate support plate 3 and the fixed die plate 4 are sequentially stacked from left to right to form a die shell mechanism, a plurality of shunting channels 51 are formed in the shunting plate 5 to shunt molten plastic injected by the central glue injection nozzle 10, and then the molten plastic is introduced into the die cavity through a plurality of transversely arranged hot nozzles 6. Furthermore, the utility model discloses the right-hand member of hot nozzle 6 sets up reposition of redundant personnel connecting block 7, and every reposition of redundant personnel connecting block 7 can correspond and connect two terminal injecting glue and chew 8, and then has realized that every hot nozzle 6 can provide the melting plastic for two die cavities simultaneously, the injection-molded machining efficiency who promotes greatly. Furthermore, the utility model discloses can realize the side direction and advance gluey, stop the production of plastic mouth of a river material in the production process simultaneously, can directly save nearly 18% of plastic raw and other materials, help reducing injection moulding pressure moreover, guarantee that every die cavity walks to glue evenly, promote automated production performance greatly, compare traditional technology, the utility model discloses production efficiency can promote 25%.

In order to realize stable connection and sealed cooperation, in this embodiment, the left end of hot nozzle 6 with 5 fixed connection of flow distribution plate, the cover is equipped with adapter sleeve 9 on the hot nozzle 6, the left end of adapter sleeve 9 with flow distribution plate 5 closely laminates, and the binding face of the two is sealed each other.

In order to reliably connect the hot nozzle 6 and the shunt connection block 7, in this embodiment, a connection pipe 11 is disposed between the hot nozzle 6 and the shunt connection block 7, the left end and the right end of the connection pipe 11 are respectively inserted into the hot nozzle 6 and the shunt connection block 7, and the connection pipe 11 is communicated between the outlet of the hot nozzle 6 and the inlet of the branch flow channel 70.

Preferably, the connection of the connection pipe 11 and the hot nozzle 6 is sealed with each other, and the connection of the connection pipe 11 and the diverging connection block 7 is sealed with each other.

In this embodiment, an up-down flow distribution mode is preferably adopted at the tail end, specifically, two adapter blocks 71 are arranged at the right end of the flow distribution connecting block 7, the two tail end glue injection nozzles 8 are symmetrically arranged at the upper and lower ends of the two adapter blocks 71, an adapter flow channel 72 is arranged in the adapter block 71, and the adapter flow channel 72 is communicated between the branch flow channel 70 and the tail end glue injection nozzle 8.

Preferably, the joints of the transfer block 71 and the shunt connecting block 7 are sealed with each other, and the joints of the transfer block 71 and the tail glue injection nozzle 8 are sealed with each other.

EXAMPLE III

In practical application, the injection mold generally comprises a hot nozzle, and if the flow needs to be divided at the front-end outlet of the hot nozzle, a flow dividing connecting block needs to be arranged, and the front-end outlet of the hot nozzle is fixedly connected with the flow dividing connecting block and is in sealing fit with the flow dividing connecting block. Under the existing connection mode, after the front end outlet of the thermal nozzle is aligned with the inlet of the shunt connection block, the thermal nozzle can be fixedly connected through screws, but the connection mode cannot ensure that the thermal nozzle and the shunt connection block are directly and reliably sealed, so that the glue leakage condition is easy to occur in the injection molding process, and the production requirement cannot be met.

To this end, the present embodiment provides a thermal nozzle front end sealing connection mechanism, which is shown in fig. 2 and 4, and includes a thermal nozzle 6, a diversion connection block 7, and a hollow connection pipe 11, a diversion threaded port 700 is formed at the left end of the diversion connection block 7, the right end of the connection pipe 11 is disposed in the diversion threaded port 700 and is screwed with the diversion threaded port 700, a nozzle runner 61 is formed in the thermal nozzle 6, a nozzle threaded port 610 is formed at the right end opening of the nozzle runner 61, a tapered port 611 is formed at the right end of the nozzle threaded port 610, the left end opening diameter of the tapered port 611 is the same as the nozzle threaded port 610, the right end opening diameter of the tapered port 611 is larger than the left end opening diameter, the connection pipe 11 includes a tapered pipe body 110, a threaded pipe body 111 is formed at the left end of the tapered pipe body 110, the outer wall taper of the tapered pipe body 110 is the same as the inner wall taper of the tapered port 611, the threaded tube 111 is screwed into the nozzle port 610, and the outer wall of the tapered tube 110 is tightly attached to the inner wall of the tapered port 611.

In the above structure, the right end of the connection pipe 11 is screwed into the split thread port 700 at the left end of the split connection block 7, so that the connection pipe 11 is tightly fitted to the split connection block 7, and the left end of the connection pipe 11 is provided with the cone-shaped pipe 110 and the thread pipe 111 in sequence, and in the process of screwing with the hot nozzle 6, the thread pipe 111 is aligned to the nozzle thread port 610, and at this time, the cone-shaped pipe 110 is located in the cone-shaped port 611, and in the process of screwing the thread pipe 111 into the nozzle thread port 610, the cone-shaped pipe 110 is gradually abutted against the cone-shaped port 611 until the sealing requirement is met, compared with the prior art, the present invention can not only realize the reliable connection between the connection pipe 11 and the hot nozzle 6, but also can be fitted with the cone-shaped port 611 through the cone-shaped pipe 110, the tightness of the joint of the hot nozzle and the hot nozzle is enhanced, and the sealing performance of the joint at the front end of the hot nozzle is greatly improved, so that the condition of glue leakage is avoided, and the production requirement is well met.

In this embodiment, the side of the connection pipe 11 is formed with an annular shoulder 112 protruding outward, and the annular shoulder 112 is located between the hot nozzle 6 and the diverging connection block 7. In order to apply torque to the connection tube 11, a wrench position may be provided on the annular shoulder 112, or the annular shoulder 112 may be directly provided with a hexagonal nut structure so as to be matched with a wrench.

In the process of inserting the connection pipe 11 into the tapered opening 611 and the nozzle threaded opening 610, in order to avoid collision between the corner between the tapered opening 611 and the nozzle threaded opening 610 and the connection pipe 11, the present embodiment preferably adopts a clearance structure, specifically: an annular clearance groove 113 is formed at the joint of the taper tube body 110 and the threaded tube body 111.

Example four

In practical application, an injection mold needs the glue injection nozzle to inject molten plastic into the cavity, when one hot nozzle corresponds to two glue injection nozzles, the molten plastic output by the hot nozzle needs to be shunted by the shunt connecting block, in order to avoid glue leakage, the tail glue injection nozzle needs to be reliably connected and matched with the shunt block, but the glue injection nozzle is difficult to realize reliable connection with the shunt block due to the fact that the glue injection nozzle is small in size and difficult to fix. Therefore, how to ensure the close fit and mutual sealing between the glue injection nozzle and the shunting block is a technical problem to be solved urgently in the prior art.

To this end, the present embodiment provides a symmetrical pushing mechanism for a glue injection nozzle of an injection mold, which is shown in fig. 2, fig. 4, fig. 5 and fig. 6, and includes a shunt connection block 7 and two terminal glue injection nozzles 8, the right end of the shunt connection block 7 is provided with two transfer blocks 71, the two terminal glue injection nozzles 8 are symmetrically arranged at the upper and lower ends of the two transfer blocks 71, two branch flow channels 70 are arranged in the shunt connection block 7, a transfer flow channel 72 is arranged in the transfer block 71, the transfer flow channel 72 is communicated between the branch flow channel 70 and the terminal glue injection nozzle 8, the side portion of the transfer block 71 is formed with an inner inclined plane portion 710, the inner inclined plane portions 710 of the two transfer blocks 71 are arranged oppositely, a top block 711 is arranged between the two transfer blocks 71, the upper and lower sides of the top block 711 are formed with outer inclined plane portions 712, the outer inclined plane portions 712 and the inner inclined planes 710 are aligned one by one and abutted to each other, a locking bolt 720 penetrates through the top block 711, a nut of the locking bolt 720 is clamped at the right end of the top block 711, the locking bolt 720 is screwed in the shunt connecting block 7, when the locking bolt 720 is screwed, the locking bolt 720 applies thrust to the top block 711, and the outer inclined plane part 712 is in butt fit with the inner inclined plane part 710 to provide trend force for the two transfer blocks 71 to move outwards, so that the transfer blocks 71 are driven to be tightly attached to the tail glue injection nozzle 8.

In the above structure, two adapter blocks 71 are disposed at the right end of the shunt connecting block 7, a top block 711 is disposed between the two adapter blocks 71, the top block 711 and the shunt connecting block 7 are connected by the locking bolt 720, on this basis, inner inclined plane portions 710 are respectively formed at opposite sides of the two adapter blocks 71, outer inclined plane portions 712 are respectively formed at the upper and lower sides of the top block 711, when the locking bolt 720 is screwed and tightened, the locking bolt 720 drives the top block 711 to be pushed leftward, the outer inclined plane portions 712 are in abutting fit with the inner inclined plane portions 710, and thrust is applied to the inner inclined plane portions 710, so that the two adapter blocks 71 are pushed outward, and because the two terminal glue nozzles 8 are symmetrically abutted against the upper and lower ends of the two adapter blocks 71, the adapter blocks 71 can be ensured to be tightly fitted with the terminal glue nozzles 8 under the action of the top block 711, because of the continuous existence of internal stress, the adapter block 71 and the tail end glue injection nozzle 8 are kept in a sealing state, so that the connection relation between the tail end glue injection nozzle 8 and the adapter block 71 is tighter, the glue leakage can be effectively avoided, and the injection molding production requirement is better met.

Preferably, the outer bevel portion 712 is formed with a plurality of transverse grooves 713. One function of the plurality of transverse grooves 713 is to reduce heat loss, so that the heat of the transfer block 71 is sufficient; another function of the block is to reduce the contact area between the top block 711 and the transfer block 71, thereby ensuring that the top block 711 is reliably pushed leftward.

In order to facilitate the insertion of the top block 711 and avoid collision during the insertion process, in this embodiment, an avoiding step opening 714 is formed at the right end edge of the inner inclined plane portion 710.

In order to achieve the positioning function between the adapter block 71 and the shunt connection block 7, in this embodiment, a positioning pin 73 is disposed between the adapter block 71 and the shunt connection block 7, and two ends of the positioning pin 73 are respectively inserted into the shunt connection block 7 and the adapter block 71.

Preferably, 4 positioning pins 73 are inserted between the transfer block 71 and the shunt connecting block 7.

The above is only the embodiment of the present invention, and is not intended to limit the present invention, and all modifications, equivalent replacements or improvements made within the technical scope of the present invention should be included within the protection scope of the present invention.

Claims (4)

1. The rear end connecting mechanism of the hot nozzle is characterized by comprising a splitter plate (5) and the hot nozzle (6), wherein a nozzle seat (60) is fixed at the left end of the hot nozzle (6), the diameter of the nozzle seat (60) is larger than that of the hot nozzle (6), the nozzle seat (60) is fixedly connected with the splitter plate (5), a plurality of splitter plate glue outlets (52) are formed in the right side of the splitter plate (5), a nozzle runner (61) is formed in the hot nozzle (6), an inner seat runner (62) is formed in the nozzle seat (60), the splitter plate glue outlets (52), the inner seat runner (62) and the nozzle runner (61) are sequentially communicated, a nozzle spacer ring (64) protruding outwards is formed on the outer side wall of the hot nozzle (6), and a reinforcing sleeve (63) is sleeved on the outer side of the nozzle spacer ring (64) and is in sealing fit with the splitter plate glue outlets (52), the inner seat runner (62) and the nozzle runner (61), the left end of strengthening sleeve (63) with nozzle seat (60) sets up relatively, the left end of nozzle spacer ring (64) is formed with taper lateral wall (640), wear to be equipped with screw (65) and the two spiral shell of mutually engaging on strengthening sleeve (63), the tip of screw (65) with taper lateral wall (640) sets up relatively, inwards screw in during screw (65), the tip of screw (65) supports tightly taper lateral wall (640), borrows by screw (65) with the cooperation of taper lateral wall (640), for strengthening sleeve (63) provides the trend power of left aversion, and then orders about the left end of strengthening sleeve (63) closely laminate in nozzle seat (60).

2. The hot nozzle back-end connection according to claim 1, wherein 3 screws (65) are provided through the reinforcing sleeve (63), and the 3 screws (65) are uniformly distributed along the circumference of the reinforcing sleeve (63).

3. The hot nozzle back end connection according to claim 1, wherein the screw (65) is a screw.

4. The hot nozzle back end connection according to claim 1, wherein the nozzle spacer ring (64) has a trapezoidal cross-section.

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