Needle valve type hot runner structure of plastic flowerpot injection mold

Abstract

The utility model discloses a plastic flowerpot injection mold needle valve type hot runner structure, which comprises a hot iron spreader plate assembly, needle valve assemblies, hot nozzle assemblies and a flowerpot injection mold assembly, the lower end of the hot iron spreader plate assembly is provided with a plurality of hot nozzle assemblies, the upper end of the hot iron spreader plate assembly is provided with a plurality of needle valve assemblies, and the flowerpot injection mold assembly is provided with a plurality of hot nozzle assemblies. The number of the needle valve assemblies is the same as that of the hot nozzle assemblies, the positions of the needle valve assemblies correspond to those of the hot nozzle assemblies in a mirror image mode, flowerpot injection mold assemblies are arranged at the lower ends of the hot nozzle assemblies, and injection nozzles are arranged above the hot iron splitter plate assembly. One-time forming can be achieved through the thermoplastic treatment mode of a needle valve type hot runner, secondary machining is not needed due to the small connector, meanwhile, the design of multiple hot nozzles is adopted, a plurality of plastic flowerpots can be machined and formed at the same time, and the production efficiency and the product quality are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of needle valve type hot runners, in particular to a needle valve type hot runner structure of a plastic flower pot injection mold. Background Art

[0002] With the development of society and people's pursuit of high quality of life, the market of plastic flower pots is expanding and applied in various fields. At the same time, the quality requirements of plastic flower pots are getting higher and higher. Among the existing plastic product technologies, thermoplastic molding technology is basically used. However, the injection port of the injection mold of the thermoplastic machine is large, so it is easy to leave a pouring port on the surface of the plastic part after demolding. When making plastic products with smooth surface, it is difficult to meet people's high quality needs, and secondary processing is required for smoothing.

[0003] The needle valve hot runner structure has the advantages of one-time molding, small interface without secondary processing, and convenient simultaneous processing of multiple pieces. Therefore, a needle valve hot runner structure for a plastic flower pot injection mold is urgently needed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a needle valve type hot runner structure of a plastic flower pot injection mold to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A needle valve hot runner structure for a plastic flower pot injection mold, comprising a hot iron diverter plate assembly, a needle valve assembly, a hot nozzle assembly and a flower pot injection mold assembly, wherein a plurality of hot nozzle assemblies are arranged at the lower end of the hot iron diverter plate assembly, a plurality of needle valve assemblies are arranged at the upper end of the hot iron diverter plate assembly, the number of the needle valve assemblies is the same as that of the hot nozzle assemblies, and the positions are mirror-imaged, a flower pot injection mold assembly is arranged at the lower end of the hot nozzle assembly, and an injection nozzle is arranged above the hot iron diverter plate assembly.

[0007] Preferably, the hot iron diverter plate assembly comprises an upper hot iron diverter plate and a lower hot iron diverter plate, the outer sides of the upper hot iron diverter plate and the lower hot iron diverter plate are both provided with grooves, and a heating ring is clamped in the groove, a heating ring protection cover is clamped on the outer side of the heating ring, and thermoplastic flow channels are opened in the upper hot iron diverter plate and the lower hot iron diverter plate.

[0008] Preferably, a threaded groove is provided on the side surface of the upper hot iron diverter plate, and is screwed to the needle valve assembly through the threaded groove; a bolt socket is provided on the top of the upper hot iron diverter plate, and the hot iron diverter plate is plugged into the injection nozzle through the bolt socket; the lower hot iron diverter plate is located below the upper hot iron diverter plate, and a bolt socket is provided on one side of the lower hot iron diverter plate close to the upper hot iron diverter plate, and is plugged into the upper hot iron diverter plate through the bolt socket; a threaded groove is provided on the bottom side surface of the lower hot iron diverter plate, and is screwed to the hot nozzle assembly through the threaded groove.

[0009] Preferably, the injection nozzle is provided with a plurality of injection channels, the number of which is the same as the number of hot nozzle components, and the injection channels are all connected to the thermoplastic flow channel. A temperature detector is arranged on the outside of the injection nozzle, and the temperature detector is a dual temperature sensing component, which is respectively connected to the injection nozzle and the upper hot iron diverter plate.

[0010] Preferably, the hot nozzle assembly includes a connecting piece, a heating ring is arranged below the connecting piece, a closed threaded sleeve is arranged between the connecting piece and the heating ring, a hot nozzle is arranged below the heating ring, an insulation ring is sleeved on the outside of the hot nozzle, and a reinforcement ring is arranged below the insulation ring.

[0011] Preferably, the needle valve assembly includes a needle valve ring, a threaded block is provided below the needle valve ring, and is threadedly connected to the upper hot iron diverter plate through the threaded block, an insulation ring is provided between the needle valve ring and the upper hot iron diverter plate, and a needle valve is inserted in the needle valve ring.

[0012] Preferably, the flower pot injection mold assembly includes an upper mold and a lower mold, a threaded connection block is arranged above the upper mold, the threaded connection block is threadedly connected to the insulation ring, a fin-shaped metal heat sink is arranged on the outer side of the upper mold, and a top pin is arranged at the base of the lower mold.

[0013] In the above technical solution, the utility model provides a needle valve hot runner structure for a plastic flower pot injection mold, which has the following beneficial effects:

[0014] (1) The needle valve hot runner structure of the plastic flower pot injection mold not only adopts the thermoplastic treatment method of the needle valve hot runner to form a single piece, but also has a small interface and does not require secondary processing. At the same time, it adopts a multi-hot nozzle design, which can process and form multiple plastic flower pots at the same time, effectively improving production efficiency and product quality.

[0015] (2) The needle valve hot runner structure of the plastic flower pot injection mold uses a dual temperature sensing component in the temperature detector. On the one hand, it monitors whether the feed temperature of the injection nozzle meets the standard, and on the other hand, it monitors whether the temperature of the hot iron manifold meets the injection requirements, which is convenient for temperature control adjustment and troubleshooting.

[0016] (3) The needle valve hot runner structure of the plastic flower pot injection mold is provided with a heating ring, an insulation ring and a fin-shaped metal heat sink on the outside of the hot nozzle assembly, which not only ensures that the thermoplastic flow channel will not be blocked due to loss of temperature during the thermoplastic process, but also ensures that the thermoplastic liquid can be quickly cooled and shaped after flowing into the mold, thereby ensuring the yield rate and speeding up the production speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 A top oblique stereoscopic structural schematic diagram of a needle valve hot runner structure embodiment of a plastic flower pot injection mold of the utility model is provided.

[0019] Figure 2 The present invention is a bottom oblique structural schematic diagram of a needle valve hot runner structure embodiment of a plastic flower pot injection mold provided by the utility model.

[0020] Figure 3 The utility model provides a cross-sectional structure schematic diagram of a needle valve hot runner structure embodiment of a plastic flower pot injection mold.

[0021] Description of reference numerals:

[0022] 1 hot iron manifold assembly, 2 needle valve assembly, 3 hot nozzle assembly, 4 flower pot injection mold assembly, 5 injection nozzle, 6 upper hot iron manifold, 7 lower hot iron manifold, 8 heating ring, 9 heating ring protection cover, 10 temperature detector, 11 thermoplastic flow channel, 12 connecting piece, 13 heating sleeve, 14 closed thread sleeve, 15 hot nozzle, 16 insulation ring, 17 reinforcement ring, 18 needle valve sleeve, 19 insulation ring, 20 needle valve, 21 upper mold, 22 lower mold, 23 threaded connection block, 24 fin-shaped metal heat sink, 25 ejector pin. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0024] like Figure 1-3As shown, a needle valve hot runner structure of a plastic flower pot injection mold provided by an embodiment of the utility model includes a hot iron diverter plate assembly 1, a needle valve assembly 2, a hot nozzle assembly 3 and a flower pot injection mold assembly 4, a plurality of hot nozzle assemblies 3 are arranged at the lower end of the hot iron diverter plate assembly 1, a plurality of needle valve assemblies 2 are arranged at the upper end of the hot iron diverter plate assembly 1, the number of the needle valve assemblies 2 is the same as that of the hot nozzle assemblies 3, and the positions are mirror-imaged, a flower pot injection mold assembly 4 is arranged at the lower end of the hot nozzle assembly 3, and an injection nozzle 5 is arranged above the hot iron diverter plate assembly 1.

[0025] Specifically, in the present embodiment, a plurality of hot nozzle assemblies 3 are provided at the lower end of the hot iron diverter plate assembly 1, and a plurality of needle valve assemblies 2 are provided at the upper end of the hot iron diverter plate assembly 1. The number of needle valve assemblies 2 is the same as that of the hot nozzle assemblies 3, and the positions are mirror-imaged. A plurality of groups of needle valve assemblies 2 and hot nozzle assemblies 3 can divert the thermoplastic flow through the hot iron diverter plate assembly 1 to simultaneously produce a plurality of plastic parts, thereby increasing production efficiency. Each group corresponds to a plastic part. A flower pot injection mold assembly 4 is provided at the lower end of the hot nozzle assembly 3, and an injection nozzle 5 is provided above the hot iron diverter plate assembly 1. After the thermoplastic flow is injected from the injection nozzle 5, it is diverted through the thermoplastic flow channel 11 of the hot iron diverter plate assembly 1, and then enters the flower pot injection mold assembly 4 from the hot nozzle 15 to complete the production and shaping of the plastic flower pot.

[0026] The needle valve hot runner structure of the plastic flower pot injection mold not only adopts the thermoplastic treatment method of the needle valve hot runner to form in one time, but also has a small interface and does not require secondary processing. At the same time, it adopts a multi-hot nozzle 15 design, which can process and form multiple plastic flower pots at the same time, effectively improving production efficiency and product quality.

[0027] Furthermore, the hot iron diverter plate assembly 1 includes an upper hot iron diverter plate 6 and a lower hot iron diverter plate 7. The outer sides of the upper hot iron diverter plate 6 and the lower hot iron diverter plate 7 are both provided with grooves, and a heating ring 8 is clamped in the groove. A heating ring protection cover plate 9 is clamped on the outer side of the heating ring 8. The upper hot iron diverter plate 6 and the lower hot iron diverter plate 7 are both provided with thermoplastic flow channels 11.

[0028] Furthermore, a threaded groove is provided on the upper side surface of the upper hot iron diverter plate 6, and is screwed to the needle valve assembly 2 through the threaded groove; a bolt socket is provided above the upper hot iron diverter plate 6, and the hot iron diverter plate 6 is plugged into the injection nozzle 5 through the bolt socket; the lower hot iron diverter plate 7 is located below the upper hot iron diverter plate 6; a bolt socket is provided on one side of the lower hot iron diverter plate 7 close to the upper hot iron diverter plate 6, and is plugged into the upper hot iron diverter plate 6 through the bolt socket; a threaded groove is provided on the bottom side surface of the lower hot iron diverter plate 7, and is screwed to the hot nozzle assembly 3 through the threaded groove.

[0029] Furthermore, a plurality of injection channels are opened inside the injection nozzle 5, the number of which is the same as the number of the hot nozzle assembly 3, for diverting the thermoplastic flow into the hot nozzle assembly 3, and the injection channels are all connected to the thermoplastic flow channel 11. A temperature detector 10 is arranged outside the injection nozzle 5, and the temperature detector 10 is a dual temperature sensing component, and is respectively connected to the injection nozzle 5 and the upper hot iron diverter plate 6. On the one hand, it monitors whether the feed temperature of the injection nozzle 5 meets the standard, and on the other hand, it monitors whether the temperature of the hot iron diverter plate assembly 1 meets the infusion requirements, so as to facilitate temperature control adjustment and troubleshooting.

[0030] Furthermore, the hot nozzle assembly 3 includes a connecting piece 12, a heating ring 13 is arranged below the connecting piece 12, and is used to heat the thermoplastic flow to ensure that the temperature is stable and it does not solidify. A sealed threaded sleeve 14 is arranged between the connecting piece and the heating ring. A hot nozzle 15 is arranged below the heating ring 13. The hot nozzle 15 is externally sleeved with an insulation ring 16 to further ensure that the temperature of the thermoplastic flow is stable, but it is not heated to allow it to cool down slowly. A reinforcement ring 17 is arranged below the insulation ring 16.

[0031] Furthermore, the needle valve assembly 2 includes a needle valve ring 18, a threaded block is arranged below the needle valve ring 18, and the needle valve ring 18 is screwed to the upper hot iron diverter plate 6 through the threaded block, and an insulation ring 19 is arranged between the needle valve ring 18 and the upper hot iron diverter plate 6, and a needle valve 20 is inserted in the needle valve ring 18, and the diameter of the needle valve 20 is equal to the opening diameter of the hot nozzle 15. The needle valve 20 is connected to an external power component, which will not be repeated here. When the thermoplastic flow enters the injection nozzle 5 and is injected, it is diverted through the thermoplastic flow channel 11 of the hot iron diverter plate assembly 1 and enters the hot nozzle assembly 3 respectively and synchronously, and then enters the flower pot injection mold assembly 4 from the hot nozzle 15. After the injection volume reaches the standard, the needle valve 20 descends to seal the hot nozzle 15 and cut off the thermoplastic flow. After heat dissipation and shaping through the fin-shaped metal heat sink 24 on the outside of the upper mold 21, the production and shaping of the plastic flower pot can be completed.

[0032] Furthermore, the flower pot injection mold assembly 4 includes an upper mold 21 and a lower mold 22. A threaded connection block 23 is arranged above the upper mold 21. The threaded connection block 23 is screwed to the insulation ring 16. A fin-shaped metal heat sink 24 is arranged on the outer side of the upper mold 21 to accelerate the heat dissipation and shaping of the thermoplastic flow. A ejector pin 25 is arranged at the base of the lower mold 22 to eject the shaped plastic parts.

[0033] Example 1

[0034] A needle valve hot runner structure for a plastic flower pot injection mold comprises a hot iron diverter plate assembly 1, a needle valve assembly 2, a hot nozzle assembly 3 and a flower pot injection mold assembly 4. A plurality of hot nozzle assemblies 3 are arranged at the lower end of the hot iron diverter plate assembly 1, and a plurality of needle valve assemblies 2 are arranged at the upper end of the hot iron diverter plate assembly 1. The number of needle valve assemblies 2 is the same as that of the hot nozzle assemblies 3, and the positions are mirror-imaged. A plurality of groups of needle valve assemblies 2 and hot nozzle assemblies 3 can divert thermoplastic flows through the hot iron diverter plate assembly 1 to simultaneously produce a plurality of plastic parts, thereby increasing production efficiency. Each group corresponds to a plastic part. A flower pot injection mold assembly 4 is arranged at the lower end of the hot nozzle assembly 3, and an injection nozzle 5 is arranged above the hot iron diverter plate assembly 1. After the thermoplastic flow is injected from the injection nozzle 5, it is diverted through the thermoplastic flow channel 11 of the hot iron diverter plate assembly 1, and then enters the flower pot injection mold assembly 4 from the hot nozzle 15 to complete the production and shaping of the plastic flower pot.

[0035] Example 2

[0036] The present embodiment is further limited on the basis of the embodiment 1, the hot iron diverter plate assembly 1 comprises an upper hot iron diverter plate 6 and a lower hot iron diverter plate 7, the outer side surfaces of the upper hot iron diverter plate 6 and the lower hot iron diverter plate 7 are both provided with grooves, and a heating ring 8 is clamped in the groove, and a heating ring protection cover plate 9 is clamped on the outer side of the heating ring 8, and a thermoplastic flow channel 11 is provided in the upper hot iron diverter plate 6 and the lower hot iron diverter plate 7; a threaded groove is provided on the upper side surface of the upper hot iron diverter plate 6, and is screwed to the needle valve assembly 2 through the threaded groove, a bolt socket is provided above the upper hot iron diverter plate 6, and the hot iron diverter plate 6 is plugged with the injection nozzle 5 through the bolt socket, the lower hot iron diverter plate 7 is located below the upper hot iron diverter plate 6, and a bolt socket is provided on the side of the lower hot iron diverter plate 7 close to the upper hot iron diverter plate 6, and is connected through the bolt socket It is plugged into the upper hot iron diverter plate 6, and a threaded groove is provided on the bottom side of the lower hot iron diverter plate 7, and is screwed to the hot nozzle assembly 3 through the threaded groove; a plurality of injection channels are opened inside the injection nozzle 5, and the number is the same as the number of the hot nozzle assembly 3, which is used to divert the thermoplastic flow into the hot nozzle assembly 3, and the injection channels are all connected to the thermoplastic flow channel 11. A temperature detector 10 is provided on the outside of the injection nozzle 5. The temperature detector 10 is a dual temperature sensing component and is respectively connected to the injection nozzle 5 and the upper hot iron diverter plate 6. On the one hand, it monitors whether the feed temperature of the injection nozzle 5 meets the standard, and on the other hand, it monitors whether the temperature of the hot iron diverter plate assembly 1 meets the infusion requirements, which is convenient for temperature control adjustment and troubleshooting; the hot nozzle assembly 3 includes a connecting piece 12, and a heating sleeve ring 13 is provided below the connecting piece 12 for heating the thermoplastic Flow to ensure that the temperature is stable and not solidified, a closed threaded sleeve 14 is arranged between the connecting piece and the heating sleeve ring, a hot nozzle 15 is arranged below the heating sleeve ring 13, and an insulation ring 16 is sleeved on the outside of the hot nozzle 15 to further ensure that the temperature of the thermoplastic flow is stable, but it is not heated to make it cool down slowly, and a reinforcement ring 17 is arranged below the insulation ring 16; the needle valve assembly 2 includes a needle valve sleeve ring 18, a threaded block is arranged below the needle valve sleeve ring 18, and it is screwed with the upper hot iron diverter plate 6 through the threaded block, and an insulation ring 19 is arranged between the needle valve sleeve ring 18 and the upper hot iron diverter plate 6, and a needle valve 20 is inserted in the needle valve sleeve ring 18, and the diameter of the needle valve 20 is equal to the opening diameter of the hot nozzle 15. The needle valve 20 should be connected to an external power component, which will not be repeated here. When the thermoplastic flow enters the injection nozzle 5 from the injection nozzle After entering, the plastic is diverted through the thermoplastic flow channel 11 of the hot iron diverter plate assembly 1 and enters the hot nozzle assembly 3 synchronously, and then enters the flower pot injection mold assembly 4 from the hot nozzle 15. After the injection volume reaches the standard, the needle valve 20 descends to seal the hot nozzle 15 and cut off the thermoplastic flow. After heat dissipation and shaping through the fin-shaped metal heat sink 24 on the outside of the upper mold 21, the production and shaping of the plastic flower pot can be completed; the flower pot injection mold assembly 4 includes an upper mold 21 and a lower mold 22. A threaded connection block 23 is arranged above the upper mold 21. The threaded connection block 23 is screwed to the insulation ring 16. A fin-shaped metal heat sink 24 is arranged on the outside of the upper mold 21 to accelerate the heat dissipation and shaping of the thermoplastic flow. A ejector pin 25 is arranged at the base of the lower mold 22 to eject the shaped plastic parts.

[0037] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A needle valve hot runner structure for a plastic flower pot injection mold, comprising a hot iron manifold assembly (1), a needle valve assembly (2), a hot nozzle assembly (3) and a flower pot injection mold assembly (4), characterized in that: A plurality of hot nozzle assemblies (3) are arranged at the lower end of the hot iron diverter plate assembly (1), a plurality of needle valve assemblies (2) are arranged at the upper end of the hot iron diverter plate assembly (1), the number of the needle valve assemblies (2) is the same as that of the hot nozzle assemblies (3), and the positions are mirror-imaged, a flower pot injection mold assembly (4) is arranged at the lower end of each of the hot nozzle assemblies (3), and an injection nozzle (5) is arranged above the hot iron diverter plate assembly (1).

2. The needle valve hot runner structure of a plastic flower pot injection mold according to claim 1, characterized in that: The hot iron diverter plate assembly (1) comprises an upper hot iron diverter plate (6) and a lower hot iron diverter plate (7), the outer side surfaces of the upper hot iron diverter plate (6) and the lower hot iron diverter plate (7) are both provided with grooves, and a heating ring (8) is clamped in the groove, a heating ring protection cover plate (9) is clamped on the outer side of the heating ring (8), and a thermoplastic flow channel (11) is both provided in the upper hot iron diverter plate (6) and the lower hot iron diverter plate (7).

3. The needle valve hot runner structure of a plastic flower pot injection mold according to claim 2, characterized in that: The upper side surface of the upper hot iron diverter plate (6) is provided with a threaded groove, and is screwed to the needle valve assembly (2) through the threaded groove; a bolt socket is provided above the upper hot iron diverter plate (6), and the hot iron diverter plate (6) is plugged into the injection nozzle (5) through the bolt socket; the lower hot iron diverter plate (7) is located below the upper hot iron diverter plate (6); a bolt socket is provided on one side of the lower hot iron diverter plate (7) close to the upper hot iron diverter plate (6), and is plugged into the upper hot iron diverter plate (6) through the bolt socket; a threaded groove is provided on the bottom side surface of the lower hot iron diverter plate (7), and is screwed to the hot nozzle assembly (3) through the threaded groove.

4. The needle valve hot runner structure of a plastic flower pot injection mold according to claim 1, characterized in that: The injection nozzle (5) has a plurality of injection channels inside, the number of which is the same as the number of the hot nozzle assembly (3), and the injection channels are all connected to the thermoplastic flow channel (11). The injection nozzle (5) is provided with a temperature detector (10) outside, and the temperature detector (10) is a dual temperature sensing assembly and is respectively connected to the injection nozzle (5) and the upper hot iron diverter plate (6).

5. The needle valve hot runner structure of a plastic flower pot injection mold according to claim 1, characterized in that: The hot nozzle assembly (3) comprises a connecting piece (12), a heating sleeve ring (13) is arranged below the connecting piece (12), a sealed threaded sleeve (14) is arranged between the connecting piece and the heating sleeve ring, a hot nozzle (15) is arranged below the heating sleeve ring (13), an insulation ring (16) is sleeved on the outside of the hot nozzle (15), and a reinforcement ring (17) is arranged below the insulation ring (16).

6. The needle valve hot runner structure of a plastic flower pot injection mold according to claim 1, characterized in that: The needle valve assembly (2) comprises a needle valve collar (18), a threaded block is arranged below the needle valve collar (18), and is threadedly connected to an upper hot iron diverter plate (6) via the threaded block, an insulation ring (19) is arranged between the needle valve collar (18) and the upper hot iron diverter plate (6), and a needle valve (20) is inserted into the needle valve collar (18).

7. The needle valve hot runner structure of a plastic flower pot injection mold according to claim 1, characterized in that: The flower pot injection mold assembly (4) comprises an upper mold (21) and a lower mold (22); a threaded connection block (23) is arranged above the upper mold (21); the threaded connection block (23) is screwed to the insulation ring (16); a fin-shaped metal heat sink (24) is arranged on the outer side of the upper mold (21); and a ejector pin (25) is arranged at the base of the lower mold (22).

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