Injection molding nozzle for plastic parts

Abstract

The utility model provides a plastic accessory injection nozzle, relates to injection molding machine nozzle technical field, including the nozzle body, the nozzle body includes the clamping subassembly, the top of clamping subassembly is provided with the pinch-off subassembly, be provided with the injection molding pipe between the clamping subassembly and the pinch-off subassembly, the both sides of clamping subassembly and pinch-off subassembly are provided with the electric push rod, the part, where wire drawing occurs, of the injection molding pipe in the injection molding process can be pinched off through the pinching-off assembly, plastic adhesion is avoided, and during injection molding work, the electric push rod drives the pinching-off assembly to move in the opposite direction, so that the injection molding pipe penetrates to the outer side of the pinching-off sleeve to conduct injection molding work; the electric push rod is controlled to drive the pinch-off assembly to move in the opposite direction, the injection molding pipe is made to return to the pinch-off sleeve, at the moment, under the action of the torsional spring, the pinch-off plate is driven to reset, the pinch-off plate can pinch off the wiredrawing plastic, and therefore the pinch-off work of the wiredrawing plastic is completed, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machine nozzles, in particular to a plastic accessory injection molding nozzle. Background Art

[0002] Injection molding machines are the main molding equipment that uses plastic molding molds to make plastic products of various shapes from thermoplastics or thermosetting plastics. When the existing injection molding machine nozzles are used for injection molding, when the traditional injection molding machine ejects the external injection plastic through the nozzle, the injection plastic itself will contact the inner wall of the nozzle, and the injection plastic itself is sticky. At this time, the injection plastic will be more laborious to move due to its own viscosity, which affects the ejection rate of the injection plastic itself;

[0003] The existing patent CN217729493U injection molding nozzle, when the material promoting block contacts the injection molding material, the material promoting block will drive the injection molding material to promote feeding, and a plurality of promoting grooves are provided on the material promoting block. When the material promoting block contacts the injection molding material, the injection molding material will contact the inside of the plurality of promoting grooves. At this time, when the material promoting block rotates, the plurality of promoting grooves on the material promoting block will increase the movement of the material when contacting the injection molding material, thereby achieving the effect of improving the feeding performance of the injection molding material;

[0004] The above-mentioned comparative documents do not effectively improve the feeding effect during injection molding by using the material promoting block. Instead, it is easy to cause the plastic to fill into the rotating structure of the material promoting block during the injection molding process, causing the material promoting block to be unable to rotate. When the material promoting block is blocked, not only the feeding efficiency cannot be improved, but the feeding effect will be affected. Moreover, when the material promoting block is blocked, it is very inconvenient to clean. Therefore, the utility model proposes a plastic accessories injection molding nozzle. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and provides a plastic accessory injection nozzle.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a plastic accessory injection molding nozzle, comprising a nozzle body, the nozzle body comprising a clamping assembly, a pinch-off assembly is arranged on the top of the clamping assembly, an injection molding tube is arranged between the clamping assembly and the pinch-off assembly, and electric push rods are arranged on both sides of the clamping assembly and the pinch-off assembly;

[0007] The pinch-off assembly includes a pinch-off sleeve, a second mounting plate is provided at one end of the pinch-off sleeve close to the clamping assembly, the second mounting plate is connected to the output end of the electric push rod, the other end of the pinch-off sleeve is rotatably connected to a rotating seat, and the pinch-off plate is rotatably connected to the rotating seat.

[0008] As a preferred embodiment, two pinch-off plates are provided, and the two pinch-off plates are symmetrical to each other with the second mounting plate, and the ends of the two pinch-off plates close to each other are both inclined structures.

[0009] The beneficial effect of adopting the above further scheme is that when injection molding is performed through the nozzle body, the material is prone to wire drawing and adhesion. At this time, it is necessary to use a pinch-off plate to pinch off the plastic with wire drawing and adhesion. Further, with the design of the inclined structure of the pinch-off plate, the wire drawing plastic can be better pinched off.

[0010] As a preferred embodiment, there are two rotating seats in total, and the two rotating seats are symmetrical to each other with the second mounting plate, and a torsion spring is sleeved on the two rotating seats, one end of the torsion spring is in contact with the pinch-off plate, and the other end of the torsion spring is in contact with the pinch-off sleeve.

[0011] The beneficial effect of adopting the above further scheme is: the two pinch-off plates can be flipped by the rotating seat, so that the injection tube can extend from the pinch-off assembly during injection molding. When the injection tube is withdrawn from the pinch-off sleeve, the pinch-off plate is driven to reset under the action of the torsion spring, so that the pinch-off plate can pinch off the brushed plastic.

[0012] As a preferred embodiment, the clamping assembly includes a clamping sleeve, first mounting plates are arranged on both sides of the clamping sleeve, the electric push rod is arranged on the first mounting plate, and the output end of the electric push rod passes through the first mounting plate.

[0013] The beneficial effect of adopting the above further scheme is: the pinch-off assembly is driven to move by the electric push rod, thereby changing the distance between the clamping assembly and the pinch-off assembly. When the injection molding work is carried out, the pinch-off assembly is driven by the electric push rod to move in the direction, so that the injection molding tube passes through the outside of the pinch-off sleeve to carry out the injection molding work. When the pinch-off operation is required, the electric push rod is controlled to drive the pinch-off assembly to move in the opposite direction, so that the injection molding tube is returned to the pinch-off sleeve.

[0014] As a preferred embodiment, a clamping plate is provided on the inner wall of the clamping sleeve, and there are two clamping plates in total, and the two clamping plates are symmetrical to each other with an electric push rod, and threaded rods are threadedly connected to both sides of the clamping assembly, and the ends of the two threaded rods close to each other respectively penetrate the clamping sleeve and are rotatably connected to the clamping plate.

[0015] The beneficial effect of adopting the above further scheme is: through the setting of the clamping assembly, the clamping assembly and the pinch-off assembly can adapt to injection molded tubes of different diameters. When in use, the clamping assembly is sleeved on the injection molded tube, and the clamping plate is driven to move toward the injection molded tube by rotating the two threaded rods. At this time, under the action of the clamping plate, the outer wall of the injection molded tube is clamped and fixed, and the installation work can be completed.

[0016] As a preferred implementation, the clamping plate is an arc-shaped structure, and anti-skid grooves are formed on the sides of the two clamping plates that are close to each other, and the anti-skid grooves are distributed in an arc shape.

[0017] The beneficial effect of adopting the above further scheme is: the outer wall of the injection molded tube is clamped by the clamping plate to achieve the clamping installation effect, and the friction between the clamping plate and the outer wall of the injection molded tube is further increased by the anti-slip groove to prevent the injection molded tube from separating from the pinch-off assembly during use.

[0018] Compared with the prior art, the advantages and positive effects of the utility model are:

[0019] 1. In the utility model, the pinch-off component can be used to pinch off the part of the injection tube where the wire drawing occurs during the injection molding process to avoid adhesion of the plastic. When the injection molding work is performed, the pinch-off component is driven by the electric push rod to move in the direction so that the injection molding tube passes through the outside of the pinch-off sleeve to perform the injection molding work. When the pinch-off operation is required, the electric push rod is controlled to drive the pinch-off component to move in the opposite direction so that the injection molding tube returns to the pinch-off sleeve. At this time, under the action of the torsion spring, the pinch-off plate is driven to reset, so that the pinch-off plate can pinch off the wire drawing plastic, thereby completing the pinch-off work of the wire drawing plastic and improving the practicality of the device.

[0020] 2. In the utility model, the clamping assembly and the pinch-off assembly can be adapted to injection molded tubes of different diameters through the setting of the clamping assembly. When in use, the clamping assembly is sleeved on the injection molded tube, and the two threaded rods are rotated to a specified position according to the diameter of the injection molded tube, so that the clamping plate fits the outer wall of the injection molded tube. At this time, under the action of the clamping plate, the outer wall of the injection molded tube is clamped and fixed, thereby completing the installation of injection molded tubes of different diameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a front view of a plastic accessory injection nozzle of the utility model;

[0022] Figure 2 This is a disassembled diagram of a plastic accessory injection nozzle of the utility model;

[0023] Figure 3 This is a structural diagram of a pinch-off assembly in a plastic accessory injection nozzle of the utility model;

[0024] Figure 4 The utility model is a structural diagram of a clamping component in a plastic accessory injection nozzle.

[0025] Reference numerals

[0026] 1. Nozzle body;

[0027] 2. Clamping assembly; 21. Clamping sleeve; 22. Clamping plate; 221. Anti-slip groove; 23. Threaded rod; 24. First mounting plate;

[0028] 3. Electric push rod;

[0029] 4. Pinch-off assembly; 41. Pinch-off sleeve; 42. Rotating seat; 43. Pinch-off plate; 44. Second mounting plate; 45. Torsion spring;

[0030] 5. Injection molding tube. DETAILED DESCRIPTION

[0031] 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 in 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.

[0032] like Figure 1-4 As shown, the utility model provides a technical solution: a plastic parts injection nozzle, including a nozzle body 1, the nozzle body 1 includes a clamping assembly 2, a pinch-off assembly 4 is arranged on the top of the clamping assembly 2, an injection tube 5 is arranged between the clamping assembly 2 and the pinch-off assembly 4, and electric push rods 3 are arranged on both sides of the clamping assembly 2 and the pinch-off assembly 4; the pinch-off assembly 4 includes a pinch-off sleeve 41, and a second mounting plate 44 is arranged at one end of the pinch-off sleeve 41 close to the clamping assembly 2, and the second mounting plate 44 is connected to the output end of the electric push rod 3, and the other end of the pinch-off sleeve 41 is rotatably connected to a rotating seat 42, and a pinch-off plate 43 is rotatably connected to the rotating seat 42, and the clamping assembly 2 includes a clamping sleeve 21, and a first mounting plate 24 is arranged on both sides of the clamping sleeve 21, and the electric push rod 3 is arranged on both sides of the clamping sleeve 21. The movable push rod 3 is arranged on the first mounting plate 24, and the output end of the electric push rod 3 passes through the first mounting plate 24. The pinch-off component 4 can pinch off the part of the injection tube 5 where wire drawing occurs during the injection molding process to avoid adhesion of the plastic. When the injection molding work is performed, the electric push rod 3 drives the pinch-off component 4 to move in the direction so that the injection molding tube 5 passes through the outside of the pinch-off sleeve 41 to perform the injection molding work. When the pinch-off operation is required, the electric push rod 3 is controlled to drive the pinch-off component 4 to move in the opposite direction so that the injection molding tube 5 is returned to the pinch-off sleeve 41. At this time, under the action of the torsion spring 45, the pinch-off plate 43 is driven to reset, so that the pinch-off plate 43 can pinch off the wire drawing plastic, thereby completing the pinch-off work of the wire drawing plastic and solving the technical problem of wire drawing adhesion of the injection molding tube 5.

[0033] Further, such as Figure 2 - Figure 3As shown: there are two pinch-off plates 43, and the two pinch-off plates 43 are symmetrical with each other around the second mounting plate 44, and the ends of the two pinch-off plates 43 that are close to each other are both inclined structures, and there are two rotating seats 42, and the two rotating seats 42 are symmetrical with each other around the second mounting plate 44, and torsion springs 45 are sleeved on the two rotating seats 42, one end of the torsion spring 45 is in contact with the pinch-off plate 43, and the other end of the torsion spring 45 is in contact with the pinch-off sleeve 41, and the inclined structure of the pinch-off plate 43 can better pinch off the brushed plastic, and the two pinch-off plates 43 can be flipped through the rotating seat 42, so that the injection tube 5 can extend from the pinch-off assembly 4 during injection molding, and when the injection tube 5 is withdrawn from the pinch-off sleeve 41, the pinch-off plate 43 is reset under the action of the torsion spring 45, so that the pinch-off plate 43 can pinch off the brushed plastic, thereby solving the technical problem of incomplete pinch-off of the plastic.

[0034] The above solution still has the problem of being unable to adapt to injection molding tubes 5 of different diameters, such as Figure 4 As shown: in the present scheme, a clamping plate 22 is provided on the inner wall of the clamping sleeve 21, and there are two clamping plates 22 in total, and the two clamping plates 22 are symmetrical with each other with the electric push rod 3. Threaded rods 23 are threadedly connected to both sides of the clamping assembly 2, and the ends of the two threaded rods 23 close to each other respectively penetrate the clamping sleeve 21 and are rotatably connected to the clamping plates 22. When in use, the clamping assembly 2 is sleeved on the injection molding tube 5, and the clamping plate 22 is driven to move toward the injection molding tube 5 by rotating the two threaded rods 23. At this time, under the action of the clamping plate 22, the outer wall of the injection molding tube 5 is clamped and fixed, and the installation of injection molding tubes 5 with different diameters can be completed.

[0035] The above solution also has the problem that the pinch-off assembly 4 and the injection tube 5 are easily separated. Figure 4 As shown: In the present scheme, the clamping plate 22 is an arc-shaped structure, and the two clamping plates 22 have anti-skid grooves 221 on the sides close to each other. The anti-skid grooves 221 are distributed in an arc shape, and the outer wall of the injection molded tube 5 is clamped by the clamping plate 22 to achieve the clamping installation effect. The friction between the clamping plate 22 and the outer wall of the injection molded tube 5 is further increased by the anti-skid grooves 221 to prevent the injection molded tube 5 from being separated from the pinch-off assembly 4 during use.

[0036] Working principle:

[0037] like Figure 1-4As shown, first, the injection molding tube 5 is connected and fixed to the injection molding machine through a flange. Secondly, the pinch-off sleeve 41 is sleeved on the outside of the injection molding tube 5, and the threaded rod 23 is rotated so that the clamping plate 22 fits the outer wall of the injection molding tube 5. At this time, the threaded rod 23 is further rotated so that the two clamping plates 22 squeeze and clamp the outer wall of the injection molding tube 5. After the installation is completed, the electric push rod 3 is controlled to drive the pinch-off assembly 4 to move toward one side of the clamping assembly 2. At this time, the injection molding tube 5 pushes the two pinch-off plates 43 to both sides until the injection molding tube 5 extends out of the pinch-off sleeve 41, and the injection molding machine is opened to perform injection molding through the injection molding tube 5. After the injection molding is completed, the electric push rod 3 is controlled to drive the pinch-off assembly 4 to move to the other side so that the injection molding tube 5 returns to the inside of the pinch-off sleeve 41. At this time, under the action of the torsion spring 45, the two pinch-off plates 43 are driven to flip and reset. Under the action of the pinch-off plates 43, the wire-drawn plastic is pinched off.

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A plastic parts injection nozzle, characterized in that: The nozzle body (1) comprises a clamping assembly (2), a pinch-off assembly (4) is arranged on the top of the clamping assembly (2), an injection molding tube (5) is arranged between the clamping assembly (2) and the pinch-off assembly (4), and electric push rods (3) are arranged on both sides of the clamping assembly (2) and the pinch-off assembly (4); The pinch-off assembly (4) comprises a pinch-off sleeve (41), one end of the pinch-off sleeve (41) close to the clamping assembly (2) is provided with a second mounting plate (44), the second mounting plate (44) is connected to the output end of the electric push rod (3), the other end of the pinch-off sleeve (41) is rotatably connected to a rotating seat (42), and the pinch-off plate (43) is rotatably connected to the rotating seat (42).

2. A plastic parts injection nozzle according to claim 1, characterized in that: Two pinch-off plates (43) are provided in total, and the two pinch-off plates (43) are symmetrical with each other with the second mounting plate (44), and the ends of the two pinch-off plates (43) that are close to each other are both inclined structures.

3. The plastic parts injection nozzle according to claim 1, characterized in that: There are two rotating seats (42) in total, and the two rotating seats (42) are symmetrical to each other with the second mounting plate (44). A torsion spring (45) is sleeved on the two rotating seats (42), one end of the torsion spring (45) contacts the pinch-off plate (43), and the other end of the torsion spring (45) contacts the pinch-off sleeve (41).

4. The plastic parts injection nozzle according to claim 1, characterized in that: The clamping assembly (2) comprises a clamping sleeve (21), first mounting plates (24) are arranged on both sides of the clamping sleeve (21), the electric push rod (3) is arranged on the first mounting plate (24), and the output end of the electric push rod (3) passes through the first mounting plate (24).

5. A plastic parts injection nozzle according to claim 4, characterized in that: The inner wall of the clamping sleeve (21) is provided with a clamping plate (22), and there are two clamping plates (22) in total, and the two clamping plates (22) are symmetrical to each other with the electric push rod (3). Both sides of the clamping assembly (2) are threadedly connected with threaded rods (23), and the ends of the two threaded rods (23) that are close to each other respectively penetrate the clamping sleeve (21) and are rotatably connected to the clamping plates (22).

6. A plastic parts injection nozzle according to claim 5, characterized in that: The clamping plates (22) are of an arc-shaped structure, and anti-slip grooves (221) are formed at the sides of the two clamping plates (22) that are close to each other, and the anti-slip grooves (221) are distributed in an arc shape.

Images