High-precision supercharging device for EVA (Ethylene Vinyl Acetate) foaming injection molding

Abstract

The utility model relates to a high-precision supercharging device for EVA (Ethylene Vinyl Acetate) foaming injection molding, which belongs to the technical field of supercharging devices and comprises two support rods, a material injection barrel is fixed between the two support rods, the top of the left side of the material injection barrel is communicated with a material inlet, and the top of the material injection barrel is provided with a rotating mechanism which extends into an inner cavity of the material injection barrel and is used for processing materials. A telescopic mechanism used for controlling the pressure intensity is arranged on the right side of the material injection barrel. According to the high-precision supercharging device for EVA foaming injection molding, a melting cylinder and a rotating motor are arranged in a matched mode, melting treatment on materials is facilitated, injection molding of subsequent materials is facilitated, meanwhile, the stability of supercharging work is facilitated, energy is supplied through a shrinkage motor, a movable plate adjusts the space in the middle of a connecting plate, and the stability of the supercharging work is improved. And the conveying pressure of the materials can be adjusted, the pressurization function of the device can be adjusted and controlled, and then high-precision pressurization of the device can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressurizing devices, in particular to a high-precision pressurizing device for EVA foam injection molding. Background Technique

[0002] EVA foam injection molding is a special machine for manufacturing plastic products at high temperature. Most of it consists of two main parts: an injection device and a mold device. Among them, the mold device of an ordinary EVA molding machine is mostly fixed in the horizontal direction. During use, the two molds are kept parallel and one mold moves away from or approaches the other mold to open or close the mold device, press, heat, and shape the raw materials. Finally, the molding is successful, and demolding can be carried out through a demolding mechanism. During the EVA foam injection molding process, pressurization treatment is required, so a corresponding pressurizing device needs to be used.

[0003] For example, a high-precision pressurizing device for EVA foam injection molding in a Chinese patent (publication number: CN217257818U) includes a bottom plate. At the center position of the top of the bottom plate, there is a lifting body. Above the lifting body, there is a top plate. On one side of the top of the top plate, there is a pressurizing box. On one side inside the pressurizing box, there is a piston plate. On the top of the top plate on one side of the pressurizing box, there is a side plate. Inside the side plate, there is a rotary driving part installed. At the end of the rotary driving part far from the side plate, there is a one-way lead screw. On the outer wall of the one-way lead screw close to the rotary driving part, there is a first nut threadedly connected. On the outer walls on both sides of the first nut, there are connecting rods. On the inner walls of both ends of the side plate of the rotary driving part, there are limit columns. This utility model not only improves the pressurizing effect during the use of the pressurizing device, but also improves the applicable range of the pressurizing device, and moreover improves the stability during the use of the pressurizing device.

[0004] This patent drives the one-way lead screw to rotate through the rotary driving part, thereby displacing the piston plate and realizing the pressurizing effect of the device. However, the control ability of this patent for the pressurizing effect is poor, so a high-precision pressurizing device for EVA foam injection molding is proposed to solve the above-mentioned problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a high-precision pressurizing device for EVA foam injection molding, which has the advantages of high pressurizing precision and solves the problem of poor pressurization control.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A high-precision pressurizing device for EVA foam injection molding includes two support rods. A feeding cylinder is fixed between the two support rods. At the top of the left side of the feeding cylinder, there is a feeding port communicated. At the top of the feeding cylinder, there is a rotary mechanism extending into its inner cavity and used for processing materials. On the right side of the feeding cylinder, there is a telescopic mechanism for controlling the pressure.

[0007] The rotation mechanism includes a rotation motor fixed to the top of the injection cylinder. The rotation motor extends into the inner cavity of the injection cylinder. A melting cylinder is fixed to the output shaft of the rotation motor. A plurality of acting blocks are fixed to the outer side of the melting cylinder.

[0008] The telescopic mechanism includes a contraction motor fixed to the right side of the injection cylinder. A rotating shaft is fixed to the output shaft of the contraction motor. A driving gear is fixed to the bottom of the rotating shaft. A driven gear is meshed with the left side of the driving gear. A contraction disc is movably connected to the inner side of the driven gear. The top of the contraction disc is fixed to the bottom of the injection cylinder.

[0009] Furthermore, a converging cylinder is fixed to the bottom of the injection cylinder. The bottom of the converging cylinder is fixed to the contraction disc. The converging cylinder has an annular structure with a wider top and a narrower bottom. An observation window is inlaid on the front of the injection cylinder.

[0010] Furthermore, the top of the feeding port is funnel-shaped. Four filter plates are fixed to the inner side of the injection cylinder. The filter plates are all fixed to the outer side of the melting cylinder.

[0011] Furthermore, heating wires are arranged in the wall of the melting cylinder. A limiting plate is fixed to the bottom of the inner cavity of the melting cylinder. A material passing through hole penetrating to its inside is opened on the outer side of the melting cylinder.

[0012] Furthermore, a stamping ring plate is fixed to the bottom of the melting cylinder. The structure of the stamping ring plate is the same as that of the converging cylinder.

[0013] Furthermore, the driven gear includes a tooth disc meshed with the driving gear. Six fixing plates are fixed to the bottom of the circumference of the tooth disc. A connecting plate is fixed between the six fixing plates.

[0014] Furthermore, the contraction disc includes a movable disc rotatably connected to the inner side of the tooth disc. Six fixing columns are movably connected to the top of the movable disc. Movable plates are fixed to the outer sides of the six fixing columns. The movable plates are movably connected to the movable disc. The tops of the movable plates are in contact with the bottoms of the connecting plates.

[0015] Furthermore, six sliding grooves are opened on the top of the movable disc. The fixing columns are slidably connected to the movable disc through the sliding grooves. The movable plates are movably connected to the movable disc through the fixing columns.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0017] The high-precision pressurization device for EVA foam injection molding is configured with a melting cylinder and a rotating motor in cooperation, which is beneficial for melting the material, facilitating subsequent injection molding of the material, and also beneficial for the stability of the pressurization work. Powered by a contraction motor, the movable plate adjusts the space in the middle of the connecting plate, helping to adjust the transmission pressure of the material and facilitating the regulation of the pressurization function of the device, thereby facilitating the realization of high-precision pressurization of the device. Brief Description of the Drawings

[0018] Figure 1 It is a schematic structural diagram of the present utility model;

[0019] Figure 2 It is a schematic external view of the present utility model;

[0020] Figure 3 It is a three-dimensional view of the driven gear of the present utility model;

[0021] Figure 4 It is a three-dimensional view of the contraction disc of the present utility model.

[0022] In the figure: 1 support rod, 2 injection barrel, 3 feeding port, 4 rotating motor, 5 melting cylinder, 6 acting block, 7 contraction motor, 8 rotating shaft, 9 driving gear, 10 driven gear, 1001 tooth disc, 1002 fixing plate, 1003 connecting plate, 11 contraction disc, 1101 movable disc, 1102 fixing column, 1103 movable plate. Detailed Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 to 2, A high-precision pressurizing device for EVA foam injection molding in this embodiment includes two support rods 1. A feeding cylinder 2 is fixed between the two support rods 1. Through the setting of the feeding cylinder 2, it is beneficial to provide space for material melting and facilitate material transmission. A converging cylinder is fixed at the bottom of the feeding cylinder 2. Through the setting of the converging cylinder, it is beneficial to increase the pressure on the material and improve the use effect of the device. The bottom of the converging cylinder is fixed to a contraction disk 11. The converging cylinder has an annular structure that is wider at the top and narrower at the bottom. An observation window is inlaid on the front of the feeding cylinder 2. Through the setting of the observation window, the melting situation inside the device can be observed, which is beneficial to pressurization regulation of the material melting situation. Four filter plates are fixed inside the feeding cylinder 2. Through the setting of the filter plates, it is beneficial to filter the material, and filtering can be carried out according to different melting situations of the material, preventing material accumulation and being beneficial to the stability of device use. The top of the left side of the feeding cylinder 2 communicates with a feeding port 3. The top of the feeding port 3 is funnel-shaped. This design is beneficial to the stable feeding of the material and the stability of device use. A rotating mechanism extending into its inner cavity and used for processing the material is provided at the top of the feeding cylinder 2, and a telescopic mechanism for controlling the pressure is provided on the right side of the feeding cylinder 2.

[0025] Through the setting of the rotating mechanism, it is beneficial to melt the material, facilitate the transmission work of the melted material, and provide guarantee for the subsequent stable realization of the pressurization function. At the same time, through the setting of the telescopic mechanism, it is beneficial to realize the high-precision pressurization function.

[0026] The rotating mechanism includes a rotating motor 4 fixed to the top of the feeding cylinder 2. The rotating motor 4 extends into the inner cavity of the feeding cylinder 2. The output shaft of the rotating motor 4 is fixed with a melting cylinder 5. Electric heating wires are arranged inside the wall of the melting cylinder 5. Through the setting of the electric heating wires, it is beneficial to melt the material and facilitate the completion of the injection molding work. A limiting plate is fixed at the bottom of the inner cavity of the melting cylinder 5. Through the setting of the limiting plate, it is beneficial to control the melting degree of the material to ensure the melting effect of the material. Through holes for passing materials are opened on the outer side of the melting cylinder 5 and penetrate through to its inside. Through the setting of the through holes for passing materials, it is beneficial to transmit the melted material and beneficial to the normal use of the overall device. The filter plates are all fixed to the outer side of the melting cylinder 5. A stamping ring plate is fixed at the bottom of the melting cylinder 5. The structure of the stamping ring plate is the same as that of the converging cylinder. Multiple acting blocks 6 are fixed to the outer side of the melting cylinder 5.

[0027] Powered by the rotating motor 4, driving the rotation of the acting blocks 6 is beneficial to cut the material and beneficial to the melting of the material. Through the setting of the electric heating wires, it is beneficial to melt the material, thus being beneficial to realizing the subsequent injection molding effect of the material.

[0028] The telescopic mechanism includes a contraction motor 7 fixed to the right side of the injection barrel 2. A rotating shaft 8 is fixed to the output shaft of the contraction motor 7. A driving gear 9 is fixed to the bottom of the rotating shaft 8. A driven gear 10 is meshed with the left side of the driving gear 9. The inner side of the driven gear 10 is movably connected with a contraction disc 11. The top of the contraction disc 11 is fixed to the bottom of the injection barrel 2.

[0029] Through the setting of the contraction motor 7, it is beneficial to supply energy to the mechanism. By rotating the rotating shaft 8, the driving gear 9 is driven to rotate. Under the meshing action, the driven gear 10 and the contraction disc 11 are driven to operate, which is beneficial to the realization of the pressurization function.

[0030] In this embodiment, the support rod 1 provides a top support force for the whole device. Through the setting of the rotating mechanism, it is beneficial to cut and melt the material, which is beneficial to the transmission of the material and the realization of the injection molding effect of the material. At the same time, through the setting of the rotating mechanism, it is beneficial to adjust the discharging space of the discharging port, which is beneficial to the adjustment of the pressurization effect with high adjustment accuracy.

[0031] Please refer to Figures 3 to 4 , in order to achieve high-precision pressurization of the device, the driven gear 10 in this embodiment includes a tooth disc 1001 meshed with the driving gear 9. Six fixing plates 1002 are fixed to the bottom of the circumference of the tooth disc 1001. Through the setting of the fixing plates 1002, it is beneficial to limit the subsequent structure and realize the function of the subsequent structure. An connecting plate 1003 is fixed between the six fixing plates 1002.

[0032] By setting the connecting plate 1003 between the fixing plates 1002, it is beneficial to control the material, and by restricting the space between the connecting plates 1003, it is beneficial to improve the precision of the device.

[0033] The contraction disc 11 includes a movable disc 1101 rotatably connected to the inner side of the tooth disc 1001. Six fixing columns 1102 are movably connected to the top of the movable disc 1101. Movable plates 1103 are fixed to the outer sides of the six fixing columns 1102. Through the fixing effect of the fixing columns 1102 and the movable plates 1103, the fixing columns 1102 and the movable plates 1103 are linked, which is beneficial to the operation of the mechanism. Six chutes are opened at the top of the movable disc 1101. Through the setting of the chutes, it is beneficial to the movement of the fixing columns 1102 and the stability of the operation of the mechanism, and further beneficial to the stability of the whole device. The fixing columns 1102 are slidably connected to the movable disc 1101 through the chutes. The movable plates 1103 are movably connected to the movable disc 1101 through the fixing columns 1102. The movable plates 1103 are movably connected to the movable disc 1101. The top of the movable plates 1103 is in contact with the bottom of the connecting plate 1003.

[0034] In this embodiment, the toothed disc 1001 is rotatably connected to the movable disc 1101, which is conducive to adjusting the movable plate 1103 through the fixed plate 1002, and further conducive to adjusting the space between the movable plate 1103 and the connecting plate 1003, facilitating the realization of the high-precision pressurization function.

[0035] All the electrical components mentioned in the text are electrically connected to the controller and the power supply. The control mode of the present utility model is controlled by the controller. The control circuit of the controller can be realized by simple programming of those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art. Moreover, the present utility model is mainly used to protect mechanical devices, so the control mode and circuit connection of the present utility model will not be explained in detail.

[0036] The working principle of the above embodiment is as follows:

[0037] The material is added into the injection cylinder 2 through the feeding port 3. The material is melted and heated by the heating wire in the melting cylinder 5. At the same time, the rotating motor 4 is started. Under the rotation action, the melting cylinder 5 is driven to rotate. The material is broken by the rotation of the acting block 6. At the same time, the melted material is introduced into the melting cylinder 5 through the filter plate and the material passing through holes. The melted material is concentrated at the bottom of the melting cylinder 5. At the same time, the contraction motor 7 is started. Under the rotation action, the rotating shaft 8 is driven to rotate, so that the driving gear 9 rotates. Through the meshing action, the toothed disc 1001 is driven to rotate. Under the fixing action, the fixed plate 1002 is driven to rotate. Through the rotational connection between the movable disc 1101 and the toothed disc 1001, the movable plate 1103 is driven to slide on the movable disc 1101. Through the sliding action, the movable plate 1103 is driven to fit towards the middle, so that the space inside the connecting plate 1003 is reduced, thus increasing the pressure of the material extruded from the injection cylinder 2, increasing the material pressure, and further realizing the pressurization effect. At the same time, by adjusting the movable plate 1103, the space capacity inside the connecting plate 1003 is controlled, which is conducive to controlling the pressurization effect.

[0038] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0039] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model.

Claims

1. A high-precision pressurizing device for EVA foam injection molding, comprising two support rods (1), characterized in that: An injection barrel (2) is fixed between the two support rods (1), the top of the left side of the injection barrel (2) is connected to a material inlet (3), the top of the injection barrel (2) is provided with a rotating mechanism extending to its inner cavity and used for processing materials, and the right side of the injection barrel (2) is provided with a telescopic mechanism for controlling pressure; The rotating mechanism comprises a rotating motor (4) fixed to the top of the injection barrel (2), the rotating motor (4) extending to the inner cavity of the injection barrel (2), the output shaft of the rotating motor (4) being fixed with a melting barrel (5), and the outer side of the melting barrel (5) being fixed with a plurality of action blocks (6); The telescopic mechanism comprises a contraction motor (7) fixed to the right side of the injection barrel (2); a rotating shaft (8) is fixed to the output shaft of the contraction motor (7); a driving gear (9) is fixed to the bottom of the rotating shaft (8); a driven gear (10) is meshed with the left side of the driving gear (9); a contraction disk (11) is movably connected to the inner side of the driven gear (10); and the top of the contraction disk (11) is fixed to the bottom of the injection barrel (2).

2. A high-precision pressurizing device for EVA foam injection molding according to claim 1, characterized in that: A converging cylinder is fixed to the bottom of the injection cylinder (2), the bottom of the converging cylinder is fixed to the shrink disk (11), the converging cylinder is in the form of an annular structure that is wide at the top and narrow at the bottom, and an observation window is inlaid on the front of the injection cylinder (2).

3. A high-precision pressurizing device for EVA foam injection molding according to claim 1, characterized in that: The top of the feed port (3) is funnel-shaped, and four filter plates are fixed on the inner side of the injection barrel (2), and the four filter plates are all fixed to the outer side of the melting barrel (5).

4. The high-precision pressurizing device for EVA foam injection molding according to claim 1, characterized in that: An electric heating wire is arranged in the wall of the melting cylinder (5), a limiting plate is fixed at the bottom of the inner cavity of the melting cylinder (5), and a material passing through hole penetrating to the inside of the melting cylinder (5) is opened on the outer side of the melting cylinder (5).

5. The high-precision pressurizing device for EVA foam injection molding according to claim 2, characterized in that: A stamping ring plate is fixed to the bottom of the melting cylinder (5), and the structure of the stamping ring plate is the same as that of the converging cylinder.

6. The high-precision pressurizing device for EVA foam injection molding according to claim 1, characterized in that: The driven gear (10) comprises a toothed disc (1001) meshing with the driving gear (9), six fixing plates (1002) are fixed to the bottom of the circumference of the toothed disc (1001), and connecting plates (1003) are fixed between the six fixing plates (1002).

7. A high-precision pressurizing device for EVA foam injection molding according to claim 6, characterized in that: The shrink disk (11) comprises a movable disk (1101) rotatably connected to the inner side of the toothed disk (1001); the top of the movable disk (1101) is movably connected to six fixed columns (1102); the outer sides of the six fixed columns (1102) are each fixed with a movable plate (1103); the movable plate (1103) is movably connected to the movable disk (1101); the top of the movable plate (1103) is in contact with the bottom of the connecting plate (1003).

8. A high-precision pressurizing device for EVA foam injection molding according to claim 7, characterized in that: The top of the movable disk (1101) is provided with six sliding grooves, the fixed column (1102) is slidably connected to the movable disk (1101) via the sliding grooves, and the movable plate (1103) is movably connected to the movable disk (1101) via the fixed column (1102).

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