Adjustable compression-resistant elastic device

Abstract

The utility model discloses an adjustable compression-resistant elastic device, which comprises an upper die, a lower die, a spreader plate, a hot nozzle body, a heat insulation cushion block and an elastic cushion block, the spreader plate and the hot nozzle body are both arranged in the lower die, the spreader plate is positioned above the hot nozzle body and is in contact with the hot nozzle body, and the elastic cushion block is arranged on the spreader plate. The heat insulation cushion block is arranged above the splitter plate and is in contact with the splitter plate, the upper die is arranged above the lower die and is in contact with the heat insulation cushion block, the bottom surface of the splitter plate is a plane, the top surface of the hot nozzle body is provided with a convex binding surface, the top of the hot nozzle body is sleeved with an elastic insert, and the elastic insert is arranged in the convex binding surface. The lower die is provided with a groove, the elastic insert is arranged in the groove, the lower end face of the elastic insert is in contact with the bottom face of the groove in an attached mode, the elastic insert and the elastic cushion block are arranged at the abutting position of the hot nozzle body and the lower die, supporting force can be provided for the hot nozzle body, and it is guaranteed that the hot nozzle body is tightly attached to the splitter plate.

Description

TECHNICAL FIELD

[0001] The utility model relates to injection molding field especially relates to adjustable compression elastic device. BACKGROUND

[0002] At present, the traditional injection hot runner system, such as Figure 4 As shown in the figure, the flow distributor 4 is fixed between the upper mold 1 and the lower mold 2, the glue flows out from the flow distributor 4, and flows into the hot nozzle body through the injection channel 9. During the flow of the glue, the internal pressure is relatively large. Because the upper mold 1 applies a compression force to the flow distributor 4 through the heat insulation pad 8, the flow distributor 4 is compressed to the end surface of the hot nozzle body 3, so as to prevent the glue from overflowing from the connection between the hot nozzle body 3 and the flow distributor 4. This structure has a fatal defect. The upper mold 1 and the lower mold 2 apply a compression force to the heat insulation pad 8 at the same time, and the heat insulation pad 8 applies a compression force to the upper mold 1 at the same time. Because the hardness of the heat insulation pad 8 is higher than that of the upper mold 1 and the lower mold 2, long-term use will cause the heat insulation pad 8 to be depressed to the upper mold 1, so that the connection between the hot nozzle body 3 and the flow distributor 4 is loose, and the glue overflows. CONTENT OF THE UTILITY MODEL

[0003] The utility model aims at providing a kind of adjustable compression elastic device to solve the problems raised in the above background.

[0004] To achieve the above object, the utility model provides the following technical scheme:

[0005] Provide a kind of adjustable compression elastic device, including upper mold, lower mold, flow distributor, hot nozzle body, heat insulation pad and elastic pad, the flow distributor and the hot nozzle body are located in the lower mold, and the flow distributor is located above the hot nozzle body, and is attached with the hot nozzle body, the heat insulation pad is located above the flow distributor, and is attached with the flow distributor, the upper mold is located above the lower mold, and is attached with the heat insulation pad, the bottom surface of the flow distributor is plane, the top surface of the hot nozzle body is provided with convex fitting surface, the hot nozzle body top is provided with elastic insert, the lower mold is provided with recess, the elastic insert is placed in recess, and the lower end surface of the elastic insert is attached with the bottom surface of recess.

[0006] Further, the side wall of the elastic insert is sequentially and spacedly provided with deformation grooves, and the deformation grooves are circular arc-shaped.

[0007] Further, the connection between the elastic insert and the hot nozzle body is provided with a mounting groove, the mounting groove is embedded with an elastic pad, and the elastic pad is clamped between the top of the hot nozzle body and the elastic insert.

[0008] Further, the convex fitting surface is conical, and the taper of the convex fitting surface is 2°-10°.

[0009] Further, the shunt plate and the hot nozzle body are provided with corresponding injection channels, and the injection channels pass through the bottom of the hot nozzle body.

[0010] Further, the outer wall of the hot nozzle body is provided with a heater.

[0011] Further, the elastic insert is provided with a limiting rod, and the limiting rod abuts against the hot nozzle body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model provides a kind of adjustable compression resistance elastic device, traditional hot nozzle body and shunt plate plane adhesion, after long time use, due to the deformation of upper mould will cause the gap between hot nozzle body and shunt plate, and glue material is easy to flow out from gap, the utility model is provided with elastic insert and elastic pad block in the abutting position of hot nozzle body and lower mould, buffer extrusion force when closing mould, slow down the deformation of upper mould can provide support force for hot nozzle body, ensure the close adhesion between hot nozzle body and shunt plate, while the contact area of elastic insert and lower mould is smaller, can slow down heat dissipation, ensure the temperature of glue material in hot nozzle body. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is Figure 1 It is the enlarged view of P1 in figure 1;

[0016] Figure 3 It is the front view of the elastic insert of the utility model;

[0017] Figure 4 It is the structural schematic diagram of prior art;

[0018] The marks of each component in the drawing are as follows: 1, upper mould;2, lower mould;3, hot nozzle body;4, shunt plate;5, elastic pad block;6, limiting rod;7, elastic insert;71, deformation groove;72, installation groove;8, heat insulation pad block;9, injection channel. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. For the purpose of clear illustration, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are unnecessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0020] It should be noted that all directional indications, such as upper, lower, left, right, front, rear, etc., are only used for the purpose of explanation and are not intended to limit the scope of the present application.

[0021] In addition, the terms "first", "second", and the like, used in the description of the application, are only intended to describe various embodiments and not to indicate or imply the order or sequence of the described elements. They are merely used to distinguish the components or operations from each other. It cannot be understood as indicating or implying the relative importance of the technical features indicated or the number of technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of various embodiments can be combined with each other, but it must be based on the realization of ordinary skilled in the art. When the combination of technical solutions is contradictory or cannot be realized, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0022] In order to further understand the utility model content, characteristics and effects of the present application, the following examples are given and described in detail as follows.

[0023] Please refer to Figures 1 to 3The utility model provides an adjustable anti -pressure elastic device, including upper die 1, lower die 2, shunt plate 4, hot nozzle body 3, heat -insulating pad 8 and elastic pad 5, shunt plate 4 and hot nozzle body 3 are located in lower die 2, and shunt plate 4 is located the top of hot nozzle body 3, and with hot nozzle body 3 is pasted touch, heat -insulating pad 8 is located the top of shunt plate 4, and with shunt plate 4 is pasted touch, upper die 1 is located the top of lower die 2, and with heat -insulating pad 8 is pasted touch, the bottom surface of shunt plate 4 is plane, and the top surface of hot nozzle body 3 is provided with convexly combined surface, specifically, the cross section shape of convexly combined surface is arc or isosceles trapezoidal in shape approximately, the top of hot nozzle body 3 is provided with elastic insert 7, and lower die 2 is provided with recess, and elastic insert 7 is placed in recess, and the lower end surface of elastic insert 7 is pasted touch with the bottom surface of recess, when the mould is closed, upper die 1 and lower die 2 form extrusion pressure, heat -insulating pad 8 is extruded downward, and heat -insulating pad 8 also forms the down pressure to shunt plate 4, and the bottom surface of shunt plate 4 is combined with the convexly combined surface of hot nozzle body 3, so that the injection channel 9 of shunt plate 4 is closely communicated with the injection channel 9 of hot nozzle body 3, usually, when the bottom surface of shunt plate 4 and the top surface of hot nozzle body 3 are extruded for a long time or high temperature, heat -insulating pad 8 will cause upper die 1 to be pressed concave, so that hot nozzle body 3 and shunt plate 4 connection place are loose, and cause the overflow of glue, but the utility model is provided with elastic insert 7 on the top of hot nozzle body 3, and elastic insert 7 can effectively disperse pressure, reduce the deformation of upper die 1, and elastic insert 7 will be compressed under pressure, and no pressure state will automatically restore, so that the convexly combined surface is always closely combined with shunt plate 4, can effectively prevent the glue from flowing out from the gap between the top surface of hot nozzle body 3 and shunt plate 4.

[0024] Specifically, the side wall of the elastic insert 7 is sequentially and spacedly provided with a deformation groove 71, and the deformation groove 71 is in a circular arc shape. The deformation groove 71 can change in number or shape according to requirements. Since the deformation groove 71 reduces the contact area with the lower die 2, heat dissipation is slower than before, which helps to maintain the temperature of the glue in the hot nozzle body 3.

[0025] Specifically, the connection part of the elastic insert 7 and the hot nozzle body 3 is provided with a mounting groove 72, and the mounting groove 72 is embedded with an elastic pad 5. The elastic pad 5 is clamped between the top of the hot nozzle body 3 and the elastic insert 7, which can buffer part of the pressure of the hot nozzle body 3.

[0026] Specifically, the shunt plate 4 and the hot nozzle body 3 are provided with corresponding injection channels 9 that are in communication. The injection channels 9 pass out from the bottom of the hot nozzle body 3. The glue flows from the shunt plate 4 into the hot nozzle body 3 through the injection channels 9.

[0027] Specifically, the convex fitting surface is conical, and the taper of the convex fitting surface is 2°-10°. In use, the top of the convex fitting surface is fitted and sealed with the bottom surface of the distribution plate 4, and the side of the convex fitting surface leaves a gap with the bottom surface of the distribution plate 4. After a period of use, the top of the convex fitting surface is gradually flattened, so that the convex fitting surface of the hot nozzle body 3 is always tightly fitted with the bottom surface of the distribution plate 4.

[0028] Specifically, the hot nozzle body 3 is provided with a heater. The heater heats the rubber material to prevent the rubber material from condensing in the injection channel 9 and causing blockage.

[0029] Specifically, the elastic insert 7 is provided with a limiting rod 6 which abuts against the hot nozzle body 3. The limiting rod 6 can prevent the hot nozzle body 3 from rotating and improve the sealing performance.

[0030] In use, the upper die 1 and the lower die 2 are folded, and the rubber material flows from the distribution plate 4 to the hot nozzle body 3 through the injection channel 9. Since the upper die 1 and the lower die 2 are pressed against each other, the upper die 1 presses down the heat insulation pad 8, and then generates a downward pressure on the distribution plate 4. The convex fitting surface of the hot nozzle body 3 is pressed downward. The elastic pad 5 and the elastic insert 7 are arranged at the lower end of the top of the hot nozzle body 3, and support the hot nozzle body 3, so that the convex fitting surface of the hot nozzle body 3 is always tightly fitted with the bottom surface of the distribution plate 4, achieving good sealing performance from beginning to end. The elastic pad 5 and the elastic insert 7 also serve as a buffer for the hot nozzle body 3, which slows down the deformation of the upper die 1 and prolongs the service life.

[0031] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any skilled person in the art can make equivalent substitutions or changes to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An adjustable compressive elastic device, comprising an upper mold (1), a lower mold (2), a flow divider (4), a hot nozzle body (3), a heat insulation pad (8), and an elastic pad (5), wherein the flow divider (4) and the hot nozzle body (3) are both disposed within the lower mold (2), and the flow divider (4) is located above the hot nozzle body (3) and in contact with the hot nozzle body (3), the heat insulation pad (8) is disposed above the flow divider (4) and in contact with the flow divider (4), and the upper mold (1) is disposed above the lower mold (2) and in contact with the heat insulation pad (8), characterized in that The bottom surface of the flow divider (4) is flat, the top surface of the hot nozzle body (3) is provided with a raised contact surface, the top of the hot nozzle body (3) is fitted with an elastic insert (7), the lower mold (2) is provided with a groove, the elastic insert (7) is placed in the groove, and the lower end surface of the elastic insert (7) is in contact with the bottom surface of the groove.

2. The adjustable compressive elastic device according to claim 1, characterized in that: The elastic insert (7) has deformation grooves (71) spaced apart on its sidewalls, and the deformation grooves (71) are arc-shaped.

3. The adjustable compressive elastic device according to claim 1, characterized in that: The connection between the elastic insert (7) and the hot nozzle body (3) is provided with an installation groove (72), and an elastic pad (5) is embedded in the installation groove (72). The elastic pad (5) is sandwiched between the top of the hot nozzle body (3) and the elastic insert (7).

4. The adjustable compressive elastic device according to claim 1, characterized in that: The raised contact surface is conical, and the taper of the raised contact surface is 2°-10°.

5. The adjustable compressive elastic device according to claim 1, characterized in that: The flow divider (4) and the hot nozzle body (3) are provided with corresponding injection channels (9), which extend from the bottom of the hot nozzle body (3).

6. The adjustable compressive elastic device according to claim 1, characterized in that: The outer wall of the hot nozzle body (3) is provided with a heater.

7. The adjustable compressive elastic device according to claim 2, characterized in that: The elastic insert (7) is provided with a limiting rod (6), which abuts against the hot nozzle body (3).

Images