Cold runner anti-reverse glue main nozzle

Abstract

The utility model discloses a cold runner anti-reverse glue main nozzle which comprises a nozzle main body, the gun nozzle is fixedly installed at one end of the nozzle body and comprises a base and a movable core, the base comprises a first hole channel and a second hole channel which are sequentially arranged, a baffle is arranged at one end of the movable core, a locking piece is arranged at the other opposite end of the movable core, a glue inlet hole is formed in the baffle, at least one glue outlet hole is formed in the side wall of the movable core, and the glue outlet hole communicates with the glue inlet hole. The locking piece extends out of the second hole channel, and the diameter of the locking piece is larger than that of the second hole channel. The gun nozzle is sleeved with the spring, one end of the spring makes contact with the nozzle body, and the other opposite end of the spring makes contact with the baffle. Compared with the prior art, the utility model solves the problems that the movable core of the existing anti-reverse glue main nozzle is not reset in place and the anti-reverse glue effect is poor.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a cold runner anti-anti-glue main nozzle. Background Art

[0002] The main nozzle is a component of the cold runner system. During injection molding, the nozzle of the injection molding machine docks with the discharge port of the main nozzle. In order to prevent the main nozzle from overflowing plastic after the nozzle of the injection molding machine is separated from the main nozzle, the main nozzle needs to adopt an anti-anti-glue design. For example, Chinese patent CN207789582U discloses a leak-proof hot runner injection molding machine nozzle, including a shield and a movable rod. A movable rod is provided on one side of the shield, a driving spring is provided at the bottom of the movable rod, a sealing device is provided at the bottom of the driving spring, a base is provided at the bottom of the sealing device, and stepped holes are provided in the sealing device and the base, and chamfers are provided at the top openings of the stepped holes.

[0003] In the existing anti-adhesive design of the cold runner main nozzle, after the rubber injection molding machine nozzle is separated from the movable core, the driving spring is improperly arranged, resulting in limited installation space and small volume, which in turn leads to insufficient elastic force of the spring, and the movable core is easily not reset into place, and anti-adhesive cannot be effectively achieved. Utility Model Content

[0004] The utility model aims to provide a cold runner anti-rebound glue main nozzle to solve the problems that the movable core of the existing anti-rebound glue main nozzle cannot be reset properly and the anti-rebound glue effect is poor.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a cold runner anti-anti-glue main nozzle, comprising:

[0006] Nozzle body;

[0007] A gun nozzle, which is fixedly mounted at one end of the nozzle body, comprises a seat body and a movable core, the seat body comprises a first channel and a second channel arranged in sequence, a baffle is provided at one end of the movable core, and a locking member is provided at the other opposite end, a glue inlet hole is provided on the baffle, at least one glue outlet hole is provided on the side wall of the movable core, the glue outlet hole is connected to the glue inlet hole, the locking member extends out of the second channel, and the diameter of the locking member is greater than the diameter of the second channel;

[0008] The spring is sleeved on the gun nozzle, one end of the spring contacts the gun nozzle body, and the other end contacts the baffle.

[0009] As a further description of the above technical solution:

[0010] Two glue outlet holes are arranged on the side wall of the movable core, and the two glue outlet holes are symmetrically arranged on both sides of the movable core.

[0011] As a further description of the above technical solution:

[0012] The locking member comprises a plurality of blocking rods which are arranged equidistantly along the axis direction of the movable core.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. In the utility model, during the glue injection process of the main nozzle, the rubber injection machine nozzle pushes forward against the movable core of the gun nozzle, and the rubber enters the glue inlet hole on the baffle. At this time, the movable core is squeezed and moved forward, the spring is compressed, and the glue outlet hole on the side wall of the movable core is exposed in the first channel. The rubber introduced at the glue inlet hole enters the first channel through the glue outlet hole, and continues to flow out of the gun nozzle from the second channel and enter the nozzle body, and finally flows out of the main nozzle from the nozzle body to complete the glue injection. After the glue injection is completed, the rubber injection machine nozzle is separated from the movable core, and the movable core is reset under the elastic force of the spring. The glue outlet hole on the side wall of the movable core is separated from the first channel and blocked by the inner wall of the seat body to achieve anti-glue. The locking piece at the end of the movable core is against the end face of the second channel on the seat body to limit the stroke of the movable core and prevent the movable core from separating from the seat body.

[0015] 2. In the utility model, the spring set on the outside of the gun nozzle is large in size and easy to disassemble and adjust when the elastic force fails. It not only effectively ensures the resetting effect of the movable core, but also effectively protects the gun nozzle.

[0016] 3. In the present invention, a "V"-shaped flow channel structure is formed between the two glue outlet holes and the glue inlet hole inside the movable core. The arrangement of the two glue outlet holes can effectively prevent the movable core from being blocked and ensure the glue outlet effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 The figure is a schematic diagram of the structure of a cold runner anti-anti-glue main nozzle.

[0019] Figure 2 A schematic diagram of the injection of a gun nozzle in a cold runner anti-rebound glue main nozzle Figure 1 .

[0020] Figure 3 A schematic diagram of the injection of a gun nozzle in a cold runner anti-rebound glue main nozzle Figure 2 .

[0021] Figure 4 A schematic diagram of the locking and leak-proofing of the nozzle in a cold runner anti-rebound glue main nozzle Figure 1 .

[0022] Figure 5 A schematic diagram of the locking and leak-proofing of the nozzle in a cold runner anti-rebound glue main nozzle Figure 2 .

[0023] Figure 6 A schematic diagram of the structure of a movable core in a cold runner anti-anti-glue main nozzle Figure 1 .

[0024] Figure 7 A schematic diagram of the structure of a movable core in a cold runner anti-anti-glue main nozzle Figure 2 .

[0025] Figure 8 A schematic diagram of the main structure of a cold runner anti-anti-glue main nozzle Figure 1 .

[0026] Fig. 9 A schematic diagram of the main structure of a cold runner anti-anti-glue main nozzle Figure 2 .

[0027] Legend:

[0028] 1. Nozzle body; 11. Nozzle seat; 111. First liquid inlet joint; 112. Second liquid inlet joint; 12. Guide tube; 121. Inner tube body; 1211. Retaining ring; 1212. Nut; 122. Outer tube body; 123. Guide piece; 1231. Guide gap; 2. Nozzle; 21. Seat; 211. First channel; 212. Second channel; 22. Movable core; 221. Baffle; 2211. Glue inlet hole; 222. Locking piece; 2221. Baffle rod; 223. Glue outlet hole; 3. Spring; 9. Rubber injection machine nozzle. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Example 1

[0031] See also Figure 1-9 The utility model provides a technical solution: a cold runner anti-anti-glue main nozzle, comprising:

[0032] Nozzle body 1;

[0033] The nozzle 2 is fixedly mounted at one end of the nozzle body 1. The nozzle 2 includes a seat body 21 and a movable core 22. The seat body 21 includes a first channel 211 and a second channel 212 arranged in sequence. A baffle 221 is provided at one end of the movable core 22, and a locking member 222 is provided at the other opposite end. A glue inlet hole 2211 is provided on the baffle 221. At least one glue outlet hole 223 is provided on the side wall of the movable core 22. The glue outlet hole 223 is connected to the glue inlet hole 2211. The locking member 222 extends out of the second channel 212, and the diameter of the locking member 222 is greater than the diameter of the second channel 212.

[0034] The spring 3 is sleeved on the nozzle 2 , with one end of the spring 3 contacting the nozzle body 1 and the other end contacting the baffle 221 .

[0035] The nozzle body 1 includes a nozzle seat body 11 and a guide tube 12. The nozzle seat body 11 is provided with a first liquid inlet joint 111 and a second liquid inlet joint 112, and the first liquid inlet joint 111 is parallel to the second liquid inlet joint 112; the guide tube 12 includes an inner tube body 121, an outer tube body 122 and a guide member 123, and the guide member 123 is provided with a guide gap 1231. The guide member 123 is sleeved on the inner tube body 121, and the guide gap 1231 and the surface of the inner tube body 121 form a guide groove. A retaining ring 1211 is provided at one end of the inner tube body 121, and the inner tube body 121 is fixed by a nut 1212 after passing through the nozzle seat body 11. The first liquid inlet joint 111 is connected to the guide groove, and the second liquid inlet joint 112 is connected to the guide groove. The outer tube body 122 is sleeved on the outside of the guide member 123, and one end of the outer tube body 122 contacts the nozzle seat body 11, and the other end contacts the retaining ring 1211.

[0036] Two glue outlet holes 223 are provided on the side wall of the movable core 22, and the two glue outlet holes 223 are symmetrically arranged on both sides of the movable core 22. Inside the movable core 22, a "V"-shaped flow channel structure is formed between the two glue outlet holes 223 and the glue inlet hole 2211. The setting of the two glue outlet holes 223 can effectively prevent the movable core 22 from being blocked, and ensure the glue outlet effect.

[0037] The locking member 222 includes a plurality of blocking rods 2221 arranged equidistantly along the axis direction of the movable core 22. The number of the blocking rods 2221 is preferably 3. The setting of the blocking rods 2221 can effectively avoid the blocking of the locking member 222 on the rubber material during the injection process on the basis of ensuring that the locking member 222 limits the travel of the movable core 22, thereby ensuring the glue discharge rate.

[0038] The inner diameter of the spring 3 is equal to the outer diameter of the seat body 21, and the outer diameter of the spring 3 is less than or equal to the outer diameter of the baffle 221. The spring 3 is sleeved on the seat body 21, and the outer surface does not exceed the baffle 221, which effectively prevents the spring 3 from being damaged.

[0039] Working principle: During the glue injection process of the main nozzle, the rubber injection machine nozzle 9 presses the movable core 22 of the gun nozzle 2 forward, and the rubber enters the glue inlet hole 2211 on the baffle 221. At this time, the movable core 22 is squeezed and moved forward, and the spring 3 is compressed. The glue outlet hole 223 on the side wall of the movable core 22 is exposed in the first channel 211, and the rubber introduced at the glue inlet hole 2211 enters the first channel 211 through the glue outlet hole 223, and continues to flow out of the gun nozzle 2 from the second channel 212, enters the nozzle body 1, and finally flows out of the main nozzle from the nozzle body 1 to complete the glue injection. After the injection is completed, the rubber injection nozzle 9 is separated from the movable core 22, and the movable core 22 is reset under the elastic force of the spring 3. The glue outlet hole 223 on the side wall of the movable core 22 is separated from the first channel 211 and blocked by the inner wall of the seat body 21 to prevent the back-glue. The locking piece 222 at the end of the movable core 22 abuts against the end face of the second channel 212 on the seat body 21 to limit the stroke of the movable core 22 and prevent the movable core 22 from being separated from the seat body 21. The spring 3 set on the outside of the gun nozzle 2 is large in size and easy to disassemble and adjust when the elastic force fails. It not only effectively ensures the reset effect of the movable core 22, but also effectively protects the gun nozzle 2.

[0040] During the operation of the nozzle body 1, when the gun nozzle 2 is injecting glue, the glue is ejected through the inner tube body 121 of the guide tube 12 on the nozzle seat body 11. The first liquid inlet joint 111 and the second liquid inlet joint 112 on the nozzle seat body 11 are used to pass the oil into or out of the guide tube 12. The first liquid inlet joint 111 and the second liquid inlet joint 112 are used to pass the oil, and the other is used to discharge the oil. The oil circuit flows from bottom to top and then from top to bottom along the guide groove inside the guide tube 12, so that the oil flowing through the oil circuit can fully exchange heat with the glue passing through the inner tube body 121, so that the nozzle can achieve the purpose of rapid heating and cooling through the oil circuit of the mold temperature controller. The guide tube is a detachable structure composed of an inner, middle and outer three-layer component set, which is convenient for repairing and cleaning the oil circuit and reducing the maintenance cost of the guide tube.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cold runner anti-anti-glue main nozzle, characterized in that: include: Nozzle body; A gun nozzle, which is fixedly mounted at one end of the nozzle body, the gun nozzle comprises a seat body and a movable core, the seat body comprises a first channel and a second channel arranged in sequence, a baffle is provided at one end of the movable core, and a locking member is provided at the other opposite end, a glue inlet hole is provided on the baffle, at least one glue outlet hole is provided on the side wall of the movable core, the glue outlet hole is connected to the glue inlet hole, the locking member extends out of the second channel, and the diameter of the locking member is greater than the diameter of the second channel; A spring is sleeved on the gun nozzle, one end of the spring contacts the gun nozzle body, and the other end opposite to the spring contacts the baffle.

2. A cold runner anti-anti-glue main nozzle according to claim 1, characterized in that: Two glue outlet holes are arranged on the side wall of the movable core, and the two glue outlet holes are symmetrically arranged on both sides of the movable core.

3. The cold runner anti-anti-glue main nozzle according to claim 1, characterized in that: The locking member includes a plurality of blocking rods which are equidistantly arranged along the axis direction of the movable core.

4. A cold runner anti-anti-glue main nozzle according to claim 3, characterized in that: The number of the baffle bars is 3.

5. The cold runner anti-anti-glue main nozzle according to claim 1, characterized in that: The inner diameter of the spring is equal to the outer diameter of the seat body.

6. The cold runner anti-anti-glue main nozzle according to claim 1, characterized in that: The outer diameter of the spring is smaller than or equal to the outer diameter of the baffle.

7. The cold runner anti-anti-glue main nozzle according to claim 1, characterized in that: The nozzle body includes a nozzle seat body and a guide tube, the nozzle seat body is provided with a first liquid inlet joint and a second liquid inlet joint, the first liquid inlet joint is parallel to the second liquid inlet joint, the guide tube includes an inner tube body, an outer tube body and a guide member, the guide member is provided with a guide gap, the guide member is sleeved on the inner tube body, the guide gap and the surface of the inner tube body form a guide groove, a retaining ring is provided at one end of the inner tube body, the inner tube body is fixed by a nut after passing through the nozzle seat body, the first liquid inlet joint is connected to the guide groove, the second liquid inlet joint is connected to the guide groove, the outer tube body is sleeved on the outside of the guide member, one end of the outer tube body contacts the nozzle seat body, and the other opposite end contacts the retaining ring.

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