CN210552581U

CN210552581U - Thermal forming device for manufacturing foaming earplug

Info

Publication number: CN210552581U
Application number: CN201921486510.9U
Authority: CN
Inventors: 顾少荣
Original assignee: Jiangyin Sian Plastic Protech Co ltd
Current assignee: Jiangyin Sian Plastic Protech Co ltd
Priority date: 2019-09-06
Filing date: 2019-09-06
Publication date: 2020-05-19
Anticipated expiration: 2029-09-06

Abstract

The utility model discloses a thermal forming device for manufacturing foaming earplugs, which comprises a heating base, an opening and closing mechanism and a forming die; the heating base is provided with a die cavity with an upper opening, the outer side of the die cavity is provided with a heating pipe, and the rear side of the die cavity is provided with a support frame; the opening and closing mechanism comprises a cover plate, a first connecting rod, a second connecting rod and a cylinder; a forming die is arranged in the die cavity, and the upper surface of the forming die is provided with a plurality of forming grooves; when the cover plate is pressed on the die cavity, the cover plate is superposed with the upper surface of the forming die, and the forming cavity is relatively sealed. By arranging the opening and closing mechanism on the utility model, the cover plate can be automatically opened and closed under the linkage action of the cylinder and the connecting rod, thereby saving labor; be equipped with the detachable moulded die on the thermoforming device, the earplug mould is convenient for change, has improved thermoforming device's rate of utilization greatly.

Description

Thermal forming device for manufacturing foaming earplug

Technical Field

The utility model relates to an earplug manufacturing technical field, especially a thermoforming device for making foaming earplug.

Background

Chinese patent with publication number CN103737777A discloses an automatic pouring PU earplug manufacturing device, including the frame be equipped with X axle guide rail and X axle actuating mechanism in the frame, be equipped with a cantilever that can follow the guide rail and remove on the X axle guide rail, be equipped with Y axle guide rail and Y axle actuating mechanism on the cantilever, be equipped with on the Y axle guide rail and match colors and tell material mixing arrangement along the automation that the guide rail removed the one end of frame is equipped with earplug mould fixing base and the automatic die sinking compound die executor that trades, and the interval is equipped with a plurality of earplug moulds on the fixing base frame one side still is equipped with the water heating circulating device of the double-pipe that heats for every earplug mould. However, in this embodiment, the timing opening and closing function of the earplug mold cannot be described in detail. And because the earplug mould is when heating, the condition of being heated is inconsistent, can cause the quality uniformity of finished product earplug poor.

In order to solve the above problems, the applicant has invented a thermoforming apparatus for manufacturing foamed earplugs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a thermoforming device for manufacturing foaming earplugs, which is provided with an opening and closing mechanism, and the cover plate can be automatically opened and closed under the linkage action of the cylinder and the connecting rod, thereby saving labor; meanwhile, the die cavity is arranged on the thermal forming device, the heating pipe is arranged on the outer side of the die cavity, and the quality consistency of the finished earplug product is high by uniformly heating the die cavity.

The utility model relates to a thermal forming device for manufacturing foaming earplugs, which is characterized by comprising a heating base, an opening and closing mechanism and a forming die;

the heating base is provided with a die cavity with an upper opening, the outer side of the die cavity is provided with a heating pipe, and the rear side of the die cavity is provided with a support frame;

the opening and closing mechanism comprises a cover plate, a first connecting rod, a second connecting rod and a cylinder, the cover plate is hinged to an upper port of the die cavity, and the upper end of the cover plate is hinged to one end of the first connecting rod; the other end of the first connecting rod is hinged with a second connecting rod, and one end of the second connecting rod is hinged on the heating base; the cylinder body of the cylinder is fixed on the support frame, and the end part of the piston of the cylinder is hinged with the second connecting rod;

a forming die is arranged in the die cavity, and the upper surface of the forming die is provided with a plurality of forming grooves; when the cover plate is pressed on the die cavity, the cover plate is superposed with the upper surface of the forming die, and the forming cavity is relatively sealed.

Preferably, the lower end of the cover plate is provided with a limiting bulge, and the shape of the limiting bulge is the same as that of the inner wall of the die cavity.

Preferably, a limiting mechanism is further arranged between the die cavity and the support frame.

Furthermore, the limiting mechanism is a limiting plate, the limiting plate is fixed on the base, and the second connecting rod is hinged to the upper end of the limiting plate.

Preferably, the heating pipe adopts a water heating mode, and a water inlet and a water outlet are formed in the heating pipe.

When the foaming earplug is manufactured, a forming die is placed in a die cavity, and a foaming body is filled in a forming groove. Under the linkage action of the cylinder and the connecting rod, the cover plate is covered at the upper port of the die cavity, the temperature and the flow rate of hot water in the heating pipe are adjusted to proper values, the heating time is set, and the foaming body is foamed in the molding groove; after the foaming body finishes foaming within the specified heating time, the cover plate is opened under the action of the cylinder, and the formed earplug is taken out from the forming groove.

The utility model discloses a thermoforming device for making foaming earplug compares with prior art and has following advantage:

(1) by arranging the opening and closing mechanism on the utility model, the cover plate can be automatically opened and closed under the linkage action of the cylinder and the connecting rod, thereby saving labor;

(2) the thermal forming device is provided with the die cavity, the heating pipe is arranged on the outer side of the die cavity, and the quality consistency of the finished earplug product is high by uniformly heating the die cavity.

Drawings

Fig. 1 is a first schematic structural view of a thermoforming apparatus for manufacturing foamed earplugs of the present invention;

fig. 2 is a schematic structural view of a thermoforming device for manufacturing foamed earplugs of the present invention;

FIG. 3 is a schematic view of the operation of a thermoforming apparatus for making foamed earplugs of the present invention;

FIG. 4 is a top view of the operation of a thermoforming device for making foamed earplugs of the present invention;

reference numerals:

heating the base 1, the die cavity 11, the heating pipe 12 and the dismounting hole 13;

the opening and closing mechanism 2, a cover plate 21, a limiting bulge 211, a first connecting rod 22, a second connecting rod 23 and an air cylinder 24; a support frame 25;

a forming die 3 and a forming groove 31;

an inverted T-shaped pressure bar 4 and a pressure sheet 41;

and a limit plate 5.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 4, a thermoforming device for manufacturing foamed earplugs of the present invention includes a heating base 1, an opening and closing mechanism 2, and a forming mold 3. The heating base 1 is provided with a die cavity 11 with an upper opening, and the outer side of the die cavity 11 is provided with a heating pipe 12.

A cover plate 21 is hinged to the upper port of the mold cavity 11, and a first connecting rod 22 is hinged to the upper end of the cover plate 21. A supporting frame 25 is arranged at the rear side of the mold cavity 11, a cylinder 24 is fixed on the supporting frame 25, a cylinder body of the cylinder 24 is fixed on the supporting frame 25, a piston end of the cylinder 24 is connected with the first connecting rod 22 through a second connecting rod 23, the first connecting rod 22 and the second connecting rod 23 are hinged, and the second connecting rod 23 is hinged on the heating base 1. The cover plate 21, the first connecting rod 22, the second connecting rod 23 and the cylinder 24 constitute the opening and closing mechanism 2. The cover plate 21 can be automatically opened and closed under the linkage action of the air cylinder 24 and the connecting rod, and manpower is saved.

A forming die 3 is arranged in the die cavity 11, and a plurality of forming grooves 31 are formed in the upper surface of the forming die 3. When the earplug is produced, after the foaming body is injected into the molding groove 31, the cover plate 21 is pressed on the mold cavity 11, and the molding groove 31 forms a relatively sealed molding cavity, so that the foaming body is ensured to form the earplug with a specific shape in the molding cavity. Since earplugs made of different materials of foams can achieve different protection effects, earplugs made of different materials of foams have different shapes in order to achieve the optimal scheme. In order to improve the utilization rate of the thermoforming device, in the present invention, it is preferable that the forming die 3 is detachably fixed in the die cavity 11.

For easy access when changing the forming die 3, the bottom of one side of the die cavity 11 is provided with a removal hole 13. When the forming die 3 needs to be replaced, the forming die 3 can be taken out through the dismounting hole 13 only after the cover plate 21 is opened, which is convenient and fast.

As a further aspect of the present invention, a pressing mechanism is further provided at the upper end of the cover plate 21, the pressing mechanism is fixed at the upper end of the opening and closing mechanism 2, and the pressing mechanism can move freely in the vertical direction along with the movement of the opening and closing mechanism 2. When the cover plate 21 is covered on the mold cavity 11, the pressing mechanism is tightly attached to the upper surface of the cover plate 21, thereby playing a role of pressing the cover plate 21. Preferably, the pressing mechanism is an inverted T-shaped pressing rod 4, a flat pressing sheet 41 is arranged at the lower end of the inverted T-shaped pressing rod 4, and when the cover plate 21 is covered on the mold cavity 11, the pressing sheet 41 is tightly attached to the upper surface of the cover plate 21.

As a further proposal of the utility model, the lower extreme of apron 21 is equipped with spacing arch 211, spacing arch 211's shape with the inner wall shape of die cavity 11 is the same, and when apron 21 lid during the last port of die cavity 11, spacing arch 211 inserts in the die cavity 11, and with the coincidence of the upper surface of moulded die 3 to realize the limit function to apron 21.

As a further aspect of the utility model, work as the apron 21 is in during the backward movement under the effect of cylinder 24, in order to control the motion route of apron 21 still be equipped with stop gear between die cavity 11 and the support frame 25, the utility model discloses in stop gear is preferably limiting plate 5, limiting plate 5 is fixed on the heating base 1, second connecting rod 23 articulates the upper end of limiting plate 5.

As a further scheme of the utility model, because the heating temperature of foaming body is usually about 100 ℃, in order to make the foaming body at the even foaming shaping of die cavity, heating pipe 12 adopts the water heating mode be equipped with water inlet and delivery port on the heating pipe 12, hot water gets into from water inlet one end, discharges from the one end of delivery port, through hydrothermal temperature and the velocity of flow in the control heating pipe 12, through carrying out the even heating to the die cavity to can realize the control to foaming body heating temperature, the quality uniformity of finished product earplug is high.

In the production of the foamed earplug, the molding die 3 is placed in the cavity 11, and the molding groove 31 is filled with the foam. Under the linkage action of the cylinder 24 and the connecting rod, the cover plate 21 is covered on the upper port of the die cavity 11, the temperature and the flow rate of hot water in the heating pipe 12 are adjusted to proper values, the heating time is set, and the foaming body is foamed in the molding groove 31; after the foaming body finishes foaming within the specified heating time, the cover plate 21 is opened under the action of the air cylinder 24, and the formed earplug is taken out from the forming groove 31.

In the description of the present specification, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of describing the technical solutions of the present patent and for simplification of the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be interpreted as limiting the present patent application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this patent application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this specification, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present specification can be understood by those of ordinary skill in the art as appropriate.

In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A thermal forming device for manufacturing foaming earplugs is characterized by comprising a heating base, an opening and closing mechanism and a forming die;

the opening and closing mechanism comprises a cover plate, a first connecting rod, a second connecting rod and a cylinder, the cover plate is hinged to an upper port of the die cavity, and the upper end of the cover plate is hinged to one end of the first connecting rod; the first connecting rod is hinged with the second connecting rod, and one end of the second connecting rod is hinged on the heating base; the cylinder body of the cylinder is fixed on the support frame, and the end part of the piston of the cylinder is hinged with the second connecting rod;

2. The thermoforming device of claim 1, wherein the lower end of the cover sheet is provided with a retention bump, the retention bump having a shape that is the same as the shape of the inner wall of the mold cavity.

3. The thermoforming device of claim 1, wherein a stop mechanism is further disposed between the mold cavity and the support frame.

4. The thermoforming device for manufacturing foamed earplugs of claim 3, wherein the limiting mechanism is a limiting plate fixed on the base, and the second connecting rod is hinged at an upper end of the limiting plate.

5. The thermoforming device of claim 1, wherein the heating tube is heated by water, and the heating tube is provided with a water inlet and a water outlet.