Router lower shell one-outlet two-side slide needle valve hot runner mold structure

Abstract

The utility model relates to the technical field of hot runner mold structures, in particular to a router lower shell one-out-two four-side slide needle valve hot runner mold structure which comprises a hot runner mechanism embedded in a mold body, the mold body comprises a mold cavity plate, one end of the mold cavity plate is in sliding connection with a cover plate I, and the other end of the mold cavity plate is in sliding connection with a cover plate II. The hot runner mechanism is fixedly connected with the first cover plate and comprises a supporting box fixed to the first cover plate in an embedded mode, and a feeding opening penetrating through the first cover plate is fixedly formed in one side of the supporting box in a communicating mode. According to the router lower shell injection molding device, a traditional single injection molding cylinder is designed into two injection molding cylinders which are communicated with the feeding opening, so that the router lower shell can be conveniently and simultaneously injected into two groove positions in the injection molding plate, and the product injection molding efficiency is improved; the multiple guide blocks which are in sliding connection with the inner side wall of the injection molding cylinder are fixed on the outer side of the ejector pin; the ejector pin can be directionally inserted into the conical material opening under the limiting effect of the guide block, and the ejector pin is effectively prevented from being inserted into the side of the conical material opening in a staggered mode.

Description

Technical Field

[0001] The utility model relates to the technical field of hot runner mold structures, and particularly relates to a one-out-two four-sided position needle valve hot runner mold structure for a router lower shell. Background Technique

[0002] During the production and processing of the router lower shell by an injection mold, it is necessary to introduce molten plastic raw materials into the hot runner. The hot runner is used to inject the melted plastic particles into the mold cavity of the router lower shell. The molten plastic raw materials are cooled in the mold cavity of the router lower shell through the water cooling of the circulating pipeline on the mold, and finally the router lower shell is demolded and taken out.

[0003] Generally, the hot runner will cooperate with the needle valve to convey raw materials. The hot runner plays the role of melting raw materials at high temperature and guiding and conveying the molten raw materials, and the needle valve plays the role of controlling the nozzle of the hot runner to release a fixed amount of raw materials. Most of the existing hot runner mold structures can only discharge materials in one direction each time, and only one router lower shell can be injection-molded at a time. The working efficiency of the hot runner mold structure is poor. Moreover, the ejector pin of the needle valve on the hot runner lacks a guiding and limiting structure. When the ejector pin controls the release of raw materials multiple times, it needs to reciprocate at the nozzle position multiple times, which easily causes the risk of misalignment between the ejector pin and the nozzle and increases the friction at the end of the ejector pin. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a one-out-two four-sided position needle valve hot runner mold structure for a router lower shell to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A one-out-two four-sided position needle valve hot runner mold structure for a router lower shell includes a hot runner mechanism embedded and installed inside a mold body. The mold body includes a mold cavity plate. One end of the mold cavity plate is slidably connected with a first cover plate. The hot runner mechanism is fixedly connected with the first cover plate. The hot runner mechanism extends into the mold cavity plate. The hot runner mechanism includes a support box embedded and fixed with the first cover plate. One side of the support box is communicated and fixed with a feed port penetrating through the first cover plate. The other side of the support box is communicated and fixed with an injection barrel. A control box is fixedly installed inside the support box. Two cylinders are embedded and installed at both ends of the control box. The output end of the cylinder is fixedly connected with an ejector pin. A plurality of guide blocks are fixedly arranged at equal angles in a ring shape on the outer side of the ejector pin. The guide blocks are slidably connected with the injection barrel.

[0007] Furthermore: A ring-shaped chamber is opened inside the ejector pin, and a spiral heating wire is fixedly installed inside the ring-shaped chamber. The spiral heating wire is electrically connected to an external power supply through a wire.

[0008] Furthermore, one end of the thimble is fixedly provided with a conical tip, one end of the injection barrel is communicatively fixed with a nozzle, and one end of the nozzle is provided with a conical material port.

[0009] Furthermore, a material guiding hole communicating with the feed port is formed in the middle of the control box, and two material distributing holes are communicatively opened at the bottom of the material guiding hole, and the material distributing holes are respectively communicatively connected with the injection barrels at corresponding positions.

[0010] Furthermore, a connecting rod is fixedly provided on the outer side of the support box, and air cylinders for driving the first cover plate to drive the hot runner mechanism to move are fixedly provided at both the top and the bottom of the mold cavity plate.

[0011] Furthermore, an injection plate is fixedly embedded on one side of the mold cavity plate, and the injection plate is communicatively connected with the hot runner mechanism.

[0012] Furthermore, a cooling plate is fixedly provided on the outer side of the injection plate, a cooling pipe is fixedly embedded in the cooling plate, a second cover plate is fixedly provided on the outer side of the cooling plate, and a protection plate is fixedly provided on the outer side of the second cover plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] 1. The molten plastic raw material is injected into the material guiding hole through the feed port, the material guiding hole distributes the raw material into the two material distributing holes, each material distributing hole respectively conveys the raw material into the injection barrel, and then the molten raw material is respectively conveyed into the injection slots of the two router lower housings inside the injection plate through the two injection barrels, so as to realize the simultaneous injection of the two router housings, which is beneficial to improving the efficiency of hot runner injection of the router housing.

[0015] 2. A plurality of guiding blocks are fixedly arranged on the outer side of the thimble at equal angles in a ring shape. During the process of the air cylinder II driving the thimble to move towards the nozzle direction, the thimble can always move towards the conical material port, and the thimble will not be misaligned due to the gap between the thimble and the injection barrel, preventing the thimble from rubbing and knocking against the conical material port to a certain extent.

[0016] 3. An annular chamber is formed in the thimble, and a spiral heating wire is fixedly arranged in the annular chamber. After the injection barrel stops injection, the spiral heating wire can be used to heat the thimble in all directions to raise the temperature, so that the raw material temporarily buffered in the injection barrel can be kept in a molten state for standby. The heating of the raw material inside the injection barrel by the thimble is combined with the heating parts arranged on the outer side of the injection barrel in the prior art to realize the simultaneous heating inside and outside the injection barrel, making the raw material inside the injection barrel heated more evenly.

[0017] 4. By setting one end of the ejector pin as a conical tip and the discharge end of the injection barrel as a conical nozzle, after the injection molding is completed, during the process of inserting the conical tip into the conical nozzle, it is convenient to convey the excess plastic raw material at the gate position of the injection plate back to the inside of the injection barrel through the conical nozzle, to a certain extent preventing a large amount of plastic raw material from remaining at the injection gate position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the combination state of the present invention and the mold body;

[0019] Figure 2 is a schematic three-dimensional structural diagram of the disassembly state of the present invention and the mold body;

[0020] Figure 3 is a schematic overall structural diagram of the present invention;

[0021] Figure 4 is a schematic internal structural diagram of the support box in the present invention;

[0022] Figure 5 is the present invention Figure 4 partial enlarged structural diagram at position A in;

[0023] Figure 6 is a schematic internal structural diagram of the ejector pin in the present invention.

[0024] In the figure: 100, mold cavity plate; 110, first cover plate; 120, injection plate; 121, product body; 130, first cylinder; 200, cooling plate; 210, cooling pipe; 220, second cover plate; 221, protection plate; 300, support box; 310, feed inlet; 320, injection barrel; 321, nozzle; 3211, conical nozzle; 330, material distribution hole; 400, control box; 410, second cylinder; 420, material guiding hole; 500, ejector pin; 510, guiding block; 520, conical tip; 530, annular chamber; 531, spiral heating wire. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1, please refer to Figures 1-6, in the embodiment of the present utility model, a hot runner die structure of a router lower case with a one-out-two quadrilateral needle valve includes a hot runner mechanism embedded and installed inside the die body. The die body includes a die cavity plate 100. One end of the die cavity plate 100 is slidably connected with a first cover plate 110. The hot runner mechanism is fixedly connected with the first cover plate 110 and extends into the die cavity plate 100. The hot runner mechanism includes a support box 300 fixedly embedded with the first cover plate 110. One side of the support box 300 is communicated and fixed with a feed port 310 penetrating through the first cover plate 110. The other side of the support box 300 is communicated and fixed with an injection barrel 320. A control box 400 is fixedly installed inside the support box 300. Two cylinders two 410 are embedded and installed at both ends of the control box 400. The output end of the cylinder two 410 is fixed with a thimble 500. A plurality of guide blocks 510 are fixedly arranged at equal angles in a ring shape on the outer side of the thimble 500. The guide blocks 510 are slidably connected with the injection barrel 320.

[0027] Specifically, by designing the traditional single injection barrel 320 into two and connecting them to the feed port 310, it is convenient to inject the router lower case into two slots on the injection plate 120 at the same time, improving the injection efficiency of the product. By fixedly arranging a plurality of guide blocks 510 that are slidably connected with the inner side wall of the injection barrel 320 at equal angles in a ring shape on the outer side of the thimble 500, during the process of the cylinder two 410 driving the thimble 500 to move, the thimble 500 will be directionally inserted into the position of the conical material port 3211 under the limiting action of the guide blocks 510, effectively preventing the thimble 500 from being misaligned and inserted into the side of the conical material port 3211, resulting in damage to the thimble 500 due to excessive friction.

[0028] As Figure 4 and Figure 5 shown, in this embodiment, a conical tip 520 is fixed at one end of the thimble 500. One end of the injection barrel 320 is communicated and fixed with a nozzle 321. A conical material port 3211 is opened at one end of the nozzle 321. During the process of the conical tip 520 being inserted into the conical material port 3211, the redundant raw materials at the injection gate position will be extruded into the interior of the injection barrel 320 along the gap between the conical thimble 500 and the conical material port 3211, achieving the effect of collecting surplus raw materials.

[0029] As Figure 4 shown, in this embodiment, a material guide hole 420 communicated with the feed port 310 is opened in the middle of the control box 400. Two material distribution holes 330 are communicated and opened at the bottom of the material guide hole 420. The material distribution holes 330 are respectively communicated with the injection barrels 320 at corresponding positions. The material distribution holes 330 are arranged on both sides of the bottom end of the material guide hole 420, facilitating the separate transportation of the molten raw materials to different injection barrels 320 for simultaneous injection at two stations.

[0030] As Figure 2As shown, in this embodiment, a connecting rod is fixed to the outside of the support box 300, and a cylinder 130 for driving the cover plate 110 to move the hot runner mechanism is fixed to the top and bottom of the mold cavity plate 100. The connecting rod facilitates the support box 300 to be fixed on the cover plate 110, and the cylinder 130 moves the cover plate 110 so that the injection cylinder 320 can be inserted into the injection plate 120 for injection molding.

[0031] like Figure 2 As shown, in the present embodiment, an injection molding plate 120 is embedded and fixed on one side of the mold cavity plate 100, the injection molding plate 120 is connected to the hot runner mechanism, a cooling plate 200 is fixed on the outer side of the injection molding plate 120, a cooling pipe 210 is embedded and fixed inside the cooling plate 200, a cover plate 220 is fixed on the outer side of the cooling plate 200, and a guard plate 221 is fixed on the outer side of the cover plate 220.

[0032] In this embodiment, this part is an injection molding structure commonly used in existing injection molds. For example, the cooling pipe 210 on the cooling plate 200 can cool the cooling plate 200 by circulating the coolant, and the cooling plate 200 can cool the molten raw material on the injection molding plate 120. The specific working principle of this part will not be elaborated.

[0033] Embodiment 2 is based on Embodiment 1, in order to allow the raw material inside the injection cylinder 320 to be fully heated by the ejector pin 500 .

[0034] like Figure 6 As shown, in the present embodiment, an annular chamber 530 is provided inside the ejector pin 500, and a spiral heating wire 531 is fixed inside the annular chamber 530. The spiral heating wire 531 is electrically connected to an external power source through a wire. The heating principle of the heating wire is the prior art, and the specific principle is not described in detail. The heating wire is designed to be in a spiral shape, so that the ejector pin 500 can be heated in all directions. After the injection molding cylinder 320 stops injection molding, the spiral heating wire 531 can be used to heat the ejector pin 500 in all directions, so that the raw material temporarily buffered inside the injection molding cylinder 320 can be kept in a molten state for standby use.

[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0036] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A one-out-of-two quadrilateral needle valve hot runner mold structure for the lower shell of a router, including a hot runner mechanism embedded and installed inside the mold body, characterized in that, The mold body includes a mold cavity plate (100). One end of the mold cavity plate (100) is slidably connected with a first cover plate (110). The hot runner mechanism is fixedly connected with the first cover plate (110). The hot runner mechanism extends into the mold cavity plate (100). The hot runner mechanism includes a support box (300) fixedly embedded with the first cover plate (110). One side of the support box (300) is fixedly communicated with a feed port (310) penetrating through the first cover plate (110). The other side of the support box (300) is fixedly communicated with an injection barrel (320). A control box (400) is fixedly arranged inside the support box (300). Two second cylinders (410) are embedded and installed at both ends of the control box (400). The output end of the second cylinder (410) is fixedly connected with a thimble (500). A plurality of guide blocks (510) are fixedly arranged at equal angles in a ring shape on the outer side of the thimble (500). The guide blocks (510) are slidably connected with the injection barrel (320).

2. The structure of a hot runner mold with a one-out-two quadrilateral needle valve for the lower case of a router according to claim 1, characterized in that A ring-shaped chamber (530) is formed inside the thimble (500). A spiral heating wire (531) is fixedly arranged inside the ring-shaped chamber (530). The spiral heating wire (531) is electrically connected with an external power supply through a wire.

3. The structure of a hot runner mold with a one-out-of-two quadrilateral needle valve for the lower shell of a router according to claim 1, characterized in that, One end of the thimble (500) is fixedly connected with a conical tip (520). One end of the injection barrel (320) is fixedly communicated with a nozzle (321). A conical material port (3211) is formed at one end of the nozzle (321).

4. A one-out-of-two quadrilateral needle valve hot runner mold structure for the lower shell of a router, characterized in that, A material guide hole (420) communicated with the feed port (310) is formed in the middle of the control box (400). Two material distribution holes (330) are communicated and formed at the bottom of the material guide hole (420). The material distribution holes (330) are respectively communicated with the injection barrels (320) at corresponding positions.

5. The structure of a one-out-of-two quadrilateral pin valve hot runner mold for the lower case of a router according to claim 1, characterized in that, A connecting rod is fixedly arranged on the outer side of the support box (300). First cylinders (130) for driving the first cover plate (110) to drive the hot runner mechanism to move are fixedly arranged at the top and bottom of the mold cavity plate (100).

6. The structure of a hot runner mold with a one-out-of-two four-sided needle valve for the lower case of a router according to claim 1, characterized in that, An injection plate (120) is fixedly embedded on one side of the mold cavity plate (100). The injection plate (120) is communicated with the hot runner mechanism.

7. A one-out-of-two quadrilateral needle valve hot runner mold structure for the lower shell of a router, characterized in that, A cooling plate (200) is fixedly arranged on the outer side of the injection plate (120). A cooling pipe (210) is fixedly embedded inside the cooling plate (200). A second cover plate (220) is fixedly arranged on the outer side of the cooling plate (200). A guard plate (221) is fixedly arranged on the outer side of the second cover plate (220).

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