Novel easy-to-fit injection molding processing device and process thereof

Abstract

The invention discloses a novel easy-to-fit injection molding processing device and a process thereof. The novel easy-to-fit injection molding processing device comprises an injection molding device and an end processing device, the injection molding device comprises an upper mold plate and a lower mold plate, a plurality of upper mold cavities are formed in the bottom surface of the upper mold plate, and the upper mold cavities are a plurality of columnar cavities distributed in a matrix; a lower die cavity is formed in the lower die plate, and the lower die cavity and the upper die cavity are attached to form a die cavity. A temperature control mechanism is arranged on the upper mold plate, and an injection molding runner communicated with each lower mold cavity is arranged in the lower mold plate; the end machining device comprises a pressing plate, a temperature control mechanism is also arranged on the pressing plate, a plurality of pressing grooves are formed in the bottom face of the pressing plate, the pressing plate and the upper die plate are the same in size, and the pressing grooves correspond to the columnar cavities one to one in position. The injection molding device is used for carrying out preliminary molding of the easy-to-fit part, and then the end machining device is used for machining the easy-to-fit end, so that the end gradually forms a shape matched with the pressing groove, and convenient injection molding machining of the easy-to-fit part is achieved; by separating end machining from model forming, interference of the end on demolding is eliminated.

Description

Technical Field

[0001] The invention belongs to the technical field of injection molding, and in particular relates to a novel easy-to-fit injection molding device and a process thereof. Background Art

[0002] Velcro is widely used in the field of clothing, mainly for fixing and connecting clothes. Velcro is usually composed of two buckles with a hook-like fabric on one side and a velvet-like fabric on the other side, and the connection and fixing function is achieved through bonding and separation.

[0003] However, the hook and fleece sides of the Velcro have poor stability. Prolonged use or improper use may cause the hook and fleece sides to deform or even fall off, resulting in a decrease in the strength of the Velcro. In order to achieve a more stable connection, an integral injection molded easy-fit sticker is currently designed. The surface of the easy-fit sticker is provided with a cylindrical head, and the cylindrical head is provided with an end head with a larger diameter. When two easy-fit stickers are used in a pair, the end head is inserted into the gap between the cylindrical heads of the opposite easy-fit stickers to form a limit position. After buckling, the opposite easy-fit sticker ends block each other and are not easy to open.

[0004] However, when the above-mentioned easy-fitting is integrally injection molded, it is difficult to demould the mold because there are many cylindrical heads on the easy-fitting surface and the end heads are also provided with end heads with larger diameters. Summary of the invention

[0005] The present invention provides a novel easy-fit injection molding processing device and a process thereof, wherein the injection molding device performs preliminary easy-fit molding, and then the end head processing device processes the easy-fit end head, so that the end head gradually forms a shape that matches the pressing groove, thereby realizing easy-fit convenient injection molding processing; by separating the processing of the end head from the model molding, the interference of the end head on demolding is eliminated, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of easy-to-fit injection molding processing device, including an injection molding device and an end processing device; the injection molding device includes an upper template and a lower template, the bottom surface of the upper template is provided with a plurality of upper mold cavities, and the upper mold cavities are a plurality of columnar cavities distributed in a matrix; the lower template is provided with a lower mold cavity corresponding to the upper mold cavity, and the lower mold cavity is a flat strip structure after being fitted with the upper mold cavity to form an easy-to-fit preliminary molding cavity, and the lower mold cavity is a flat strip structure; the upper template is provided with a temperature control mechanism, and the lower template is provided with an injection molding flow channel connecting each of the lower mold cavities; the end processing device includes a pressing plate, the outside of the pressing plate is connected to a lifting mechanism, the pressing plate is also provided with a temperature control mechanism, the bottom surface of the pressing plate is provided with a plurality of pressing grooves, the pressing plate is the same size as the upper template, and the positions of the pressing grooves and the columnar cavities correspond one to one.

[0007] Preferably, the temperature control mechanism on the pressing plate has the same structure as the temperature control mechanism on the upper template, and both include a cover plate, and the cover plate is provided with a plurality of temperature control grooves corresponding one to one with the mold cavities, and the pressing plate and the upper template are both provided with another half of the temperature control groove mirror-set as the temperature control groove on the cover plate, and a plurality of temperature control cavities are formed after the pressing plate, the upper template and the cover plate are bonded together, and the upper template and the pressing plate are both provided with a flow channel running through each temperature control cavity, and are provided with an inlet and an outlet.

[0008] Preferably, the pressing plate and the upper template are fixed to the cover plate by screws at four corners.

[0009] Preferably, a plurality of diverter columns distributed in a spaced matrix are provided in the temperature control groove of the cover plate, and the height of the diverter columns is the sum of the depths of the two temperature control grooves.

[0010] Preferably, each of the temperature control chambers is connected via a connecting chamber, and the connecting chamber connects two adjacent temperature control chambers end to end.

[0011] Preferably, the pressure plate and the upper template edge are provided with a sealing ring groove, the cover plate is also provided with a corresponding sealing ring groove and is equipped with a sealing ring, and the sealing ring is provided with an annular ring at the inlet and the outlet.

[0012] Preferably, the sealing ring comprises two parts, an upper part and an lower part, wherein the bottom end of the upper sealing ring is provided with a circle of downward convex edges, and the top end of the lower sealing ring is provided with a clamping groove corresponding to the convex edges.

[0013] The present invention provides a processing technology based on the novel easy-to-fit injection molding processing device, which is characterized by comprising the following steps: S1: The upper mold plate is fitted with the lower mold plate, and then the injection molten material is injected into the lower mold cavity and the upper mold cavity through the injection runner by an external injection device; S2: After forming, the mold is cooled by a temperature control mechanism, and then the upper mold plate and the lower mold plate are separated to obtain a preliminary molded blank that is easy to fit; S3: The easy-fitting part is located in the lower mold cavity of the lower mold plate, and the end of the easy-fitting columnar head is subjected to end pressing treatment; S4: placing a pressing plate, wherein the pressing groove of the pressing plate squeezes the end piece therein; S5: Then the temperature control mechanism heats the pressing plate, and then presses the pressing plate downward. The temperature of the pressing plate is controlled to make the end slightly melted. During the pressing process of the pressing plate, the end that is easy to fit gradually forms a shape that fits the pressing groove, and the diameter of the end is larger than the diameter of the cylindrical head. S6: After molding, the temperature control mechanism is cooled and the pressure plate is removed to achieve easy-fit injection molding.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. The easy-to-fit end is initially formed by the injection molding device, and then the end processing device processes the easy-to-fit end so that the end gradually forms a shape that matches the pressing groove, thereby realizing the easy-to-fit convenient injection molding process.

[0015] 2. By separating the processing of the end cap from the model forming, the interference of the end cap on demolding can be eliminated.

[0016] 3. Through the injection molding device and the end processing device, the temperature control mechanism corresponding to the mold cavity is coordinated to achieve efficient and accurate temperature control of the mold cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 It is a schematic diagram of the upper template and lower template separation structure of the present invention; Figure 3 It is a schematic diagram of the pressing plate structure of the present invention; Figure 4 It is a schematic diagram of the structure of the temperature control mechanism of the present invention; Figure 5 It is a schematic diagram of the combined structure of the upper and lower parts of the sealing ring of the present invention; Figure 6 It is a schematic diagram of the separation structure of the upper and lower parts of the sealing ring of the present invention.

[0018] Figure 7 It is a schematic diagram of the easy-fit fastening product of the present invention.

[0019] Figure 8 It is a schematic diagram of the easy-fit columnar head and end head product of the present invention.

[0020] In the figure: 1. upper mold plate; 2. lower mold plate; 3. upper mold cavity; 4. lower mold cavity; 5. injection flow channel; 6. pressure plate; 7. pressure groove; 8. cover plate; 9. temperature control groove; 10. inlet; 11. outlet; 12. diverter column; 13. connecting cavity; 14. sealing ring; 15. annular ring; 16. convex edge. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 3The present invention provides a novel easy-to-fit injection molding processing device, including an injection molding device and an end processing device; the injection molding device includes an upper template 1 and a lower template 2, the bottom surface of the upper template 1 is provided with a plurality of upper mold cavities 3, which are used to process a plurality of easy-to-fit at one time, the upper mold cavities 3 are a plurality of columnar cavities distributed in a matrix, which are used to form a protruding columnar head that is easy to fit, and the design of the columnar cavity is also conducive to upward demolding; the lower template 2 is provided with a lower mold cavity 4 corresponding to the upper mold cavity 3, and the lower mold cavity 4 forms an easy-to-fit preliminary molding cavity after being fitted with the upper mold cavity 3, and the lower mold cavity 4 is a flat strip structure; the upper template 1 is provided with a temperature control mechanism, which is used to cool the upper and lower molds as a whole after injection molding, and the lower template 2 is provided with an injection flow channel 5 connected to each of the lower mold cavities 4; The end processing device includes a pressing plate 6, the pressing plate 6 is externally connected to a lifting mechanism, the pressing plate 6 is also provided with a temperature control mechanism, and the structure is the same as that of the temperature control mechanism on the upper template 1, and the bottom surface of the pressing plate 6 is provided with a plurality of pressing grooves 7, the pressing plate 6 is the same size as the upper template 1, and the pressing grooves 7 correspond to the positions of the column cavities one by one; During processing, the upper template 1 is fitted with the lower template 2, and then the injection molten material is injected into the lower mold cavity 4 and the upper mold cavity 3 through the injection runner 5 through the external injection equipment. After molding, it is cooled by the temperature control mechanism, and then the upper template 1 and the lower template 2 are separated to obtain an easy-to-fit preliminary molded blank. At this time, the easy-to-fit is still located in the lower mold cavity 4 of the lower template 2, and the end of the easy-to-fit columnar head has not been subjected to end pressure treatment. Then the pressing plate 6 is placed, and the pressing groove 7 of the pressing plate 6 will squeeze the end head therein, and then the temperature control mechanism heats the pressing plate 6, and then the pressing plate 6 is pressed down, and the temperature of the pressing plate 6 is controlled to The temperature at which the end is slightly melted but not flowing is set, and due to the upward rebound extrusion given to the end itself, during the pressing process of the pressing plate 6, the easy-fit end gradually forms a shape that matches the pressing groove 7, and the diameter of the end is larger than the diameter of the columnar head, so that when two easy-fit pieces are used in a pair, a limit is formed by inserting the end into the gap between the opposite easy-fit columnar heads. After being fastened, the relative easy-fit ends block each other and are not easy to open. At the same time, when one end is detached from the outside, the adjacent end will be subject to greater resistance, so that the fastening is very stable. After molding, the temperature control mechanism is cooled, and the pressing plate 6 is removed to realize easy-fit injection molding.

[0023] See also Figure 1-Figure 4As a further embodiment, the pressing plate 6 is also provided with a temperature control mechanism, and has the same structure as the temperature control mechanism on the upper template 1, both of which include a cover plate 8, and the cover plate 8 is provided with a plurality of temperature control grooves 9 corresponding to the mold cavities one by one, and the pressing plate 6 and the upper template 1 are both provided with another half of the temperature control groove 9 mirrored with the temperature control groove 9 on the cover plate 8, and a plurality of temperature control cavities are formed after the pressing plate 6, the upper template 1 and the cover plate 8 are bonded together, and the upper template 1 and the pressing plate 6 are both provided with a flow channel passing through each temperature control cavity, and are provided with an inlet 10 and an outlet 11; in this embodiment, a fluid can be introduced into the inlet 10 and the outlet 11 of the flow channel accordingly, and enters each temperature control cavity through the fluid, and the temperature of the fluid is correspondingly given to the corresponding mold cavity for temperature control.

[0024] See also Figure 1-Figure 4 As a further embodiment, the pressing plate 6 and the upper template 1 are fixed to the cover plate 8 by screws at four corners. In this embodiment, the pressing plate 6, the upper template 1 and the cover plate 8 are fixed by screws at four corners, and a stable seal is achieved after the fluid is passed.

[0025] See also Figure 4 As a further embodiment, a plurality of diverter columns 12 distributed in an interval matrix are provided in the temperature control groove 9 of the cover plate 8, and the height of the diverter column 12 is the sum of the depths of the two temperature control grooves 9; in this embodiment, after the two mirror-image temperature control grooves 9 are combined to form a complete temperature control cavity, the diverter column 12 diverts the incoming fluid multiple times to improve the uniform temperature control effect.

[0026] See also Figure 4 As a further embodiment, each of the temperature control chambers is connected by a connecting chamber 13, and the connecting chamber 13 connects the two adjacent temperature control chambers end to end; in this embodiment, the connecting chamber 13 connects the head end and the tail end of the two adjacent temperature control chambers respectively, which can help the fluid to fully cover the entire temperature control chamber.

[0027] See also Figure 4-Figure 5 As a further embodiment, a sealing ring groove is provided around the edge of the pressing plate 6 and the upper template 1, and the cover plate is also provided with a corresponding sealing ring groove and equipped with a sealing ring 14, and the sealing ring 14 is provided with annular rings 15 at the inlet 10 and the outlet 11; in this embodiment, under the premise of fixing the fixing screws at the four corners, the sealing of the sealing ring 14 further improves the overall sealing performance, and the annular ring 15 is used to seal the inlet 10 and the outlet 11.

[0028] See also Figure 6As a further embodiment, the sealing ring 14 includes two parts, an upper part and an lower part. The bottom end of the upper sealing ring 14 is provided with a circle of downward convex edges 16, and the top of the lower sealing ring 14 is provided with a clamping groove corresponding to the convex edge 16. In this embodiment, the sealing ring 14 is provided with two parts, which is convenient for the installation of the sealing ring 14 at the inlet 10 and the outlet 11. Moreover, through the design of the convex edge 16 and the clamping groove, the sealing ring 14 can still play a high sealing effect after the upper and lower parts are displaced, thereby improving the sealing performance.

[0029] The present invention provides a processing technology based on the novel easy-to-fit injection molding processing device, comprising the following steps: S1: The upper mold plate 1 is fitted with the lower mold plate 2, and then the injection molten material is injected into the lower mold cavity 4 and the upper mold cavity 3 through the injection runner 5 by an external injection device; S2: After forming, the mold is cooled by a temperature control mechanism, and then the upper mold plate 1 and the lower mold plate 2 are separated to obtain a preliminary molded blank that is easy to fit; S3: The easy-fitting part is located in the lower mold cavity 4 of the lower mold plate 2, and the end of the easy-fitting columnar head is subjected to end pressing treatment; S4: placing a pressing plate 6, wherein the pressing groove 7 of the pressing plate 6 squeezes the end piece therein; S5: Then the temperature control mechanism heats the pressing plate 6, and then presses the pressing plate 6 downward. The temperature of the pressing plate 6 is controlled to make the end head slightly melted. Since the end head itself is subjected to upward rebound extrusion, during the pressing process of the pressing plate 6, the easy-to-fit end head gradually forms a shape that matches the pressing groove 7, and the diameter of the end head is larger than the diameter of the columnar head, so that when two easy-to-fit pieces are used in a pair, the end head is inserted into the gap between the opposite easy-to-fit columnar heads to form a limit. After buckling, the relative easy-to-fit end heads block each other and are not easy to be opened. At the same time, when one end head is detached outward, the adjacent end head will be subjected to greater resistance, so that the buckling is very stable. S6: After molding, the temperature control mechanism is cooled, and the pressing plate 6 is removed to achieve easy-fit injection molding.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of easy-to-fit injection molding processing device, characterized in that: The invention comprises an injection molding device and an end processing device; the injection molding device comprises an upper mold plate (1) and a lower mold plate (2); the upper mold plate (1) is provided with a plurality of upper mold cavities (3) on its bottom surface, the upper mold cavities (3) being a plurality of columnar cavities distributed in a matrix; the lower mold plate (2) is provided with a lower mold cavity (4) corresponding to the upper mold cavity (3); the lower mold cavity (4) and the upper mold cavity (3) are fitted to form a preliminary molding cavity that is easy to fit together; the lower mold cavity (4) is a flat strip-shaped structure; the upper mold plate (1) is provided with a temperature control mechanism; the lower mold plate (2) is provided with an injection molding flow channel (5) connected to each of the lower mold cavities (4); the end processing device comprises a pressing plate (6); the pressing plate (6) is externally connected to a lifting mechanism; the pressing plate (6) is also provided with a temperature control mechanism; the bottom surface of the pressing plate (6) is provided with a plurality of pressing grooves (7); the pressing plate (6) and the upper mold plate (1) have the same size. Furthermore, the positions of the pressing grooves (7) and the columnar cavities correspond one to one.

2. A novel easy-to-fit injection molding processing device according to claim 1, characterized in that: The temperature control mechanism on the pressing plate (6) has the same structure as the temperature control mechanism on the upper mold plate (1), and both comprise a cover plate (8). The cover plate (8) is provided with a plurality of temperature control grooves (9) corresponding one to one with the mold cavities. The pressing plate (6) and the upper mold plate (1) are both provided with another half of the temperature control groove (9) mirror-imaged to the temperature control groove (9) on the cover plate (8). When the pressing plate (6), the upper mold plate (1) and the cover plate (8) are bonded together, a plurality of temperature control cavities are formed. The upper mold plate (1) and the pressing plate (6) are both provided with a flow channel that passes through each temperature control cavity, and are provided with an inlet (10) and an outlet (11).

3. A novel easy-to-fit injection molding processing device according to claim 2, characterized in that: The pressing plate (6) and the upper template (1) are fixed to the cover plate (8) via screws at four corners.

4. A novel easy-to-fit injection molding processing device according to claim 3, characterized in that: A plurality of flow dividing columns (12) distributed in a matrix at intervals are arranged in the temperature control groove (9) of the cover plate (8), and the height of the flow dividing columns (12) is the sum of the depths of the two temperature control grooves (9).

5. A novel easy-to-fit injection molding processing device according to claim 4, characterized in that: Each of the temperature control chambers is connected via a connecting chamber (13), and the connecting chamber (13) connects two adjacent temperature control chambers end to end.

6. A novel easy-to-fit injection molding processing device according to claim 5, characterized in that: The pressure plate (6) and the upper mold plate (1) are provided with a sealing ring groove around their edges, and the cover plate is also provided with a corresponding sealing ring groove and is provided with a sealing ring (14). The sealing ring (14) is provided with an annular ring (15) at both the inlet (10) and the outlet (11).

7. A novel easy-to-fit injection molding processing device according to claim 6, characterized in that: The sealing ring (14) comprises an upper and lower part, wherein the bottom end of the upper sealing ring (14) is provided with a circle of downwardly facing convex edges (16), and the top of the lower sealing ring (14) is provided with a clamping groove corresponding to the convex edges (16).

8. A processing technology based on the novel easy-to-fit injection molding processing device according to any one of claims 1 to 7, characterized in that: The steps include: S1: The upper mold plate is fitted with the lower mold plate, and then the injection molten material is injected into the lower mold cavity and the upper mold cavity through the injection runner by an external injection device; S2: After forming, the mold is cooled by a temperature control mechanism, and then the upper mold plate and the lower mold plate are separated to obtain a preliminary molded blank that is easy to fit; S3: The easy-fitting part is located in the lower mold cavity of the lower mold plate, and the end of the easy-fitting columnar head is subjected to end pressing treatment; S4: placing a pressing plate, wherein the pressing groove of the pressing plate squeezes the end piece therein; S5: Then the temperature control mechanism heats the pressing plate, and then presses the pressing plate downward. The temperature of the pressing plate is controlled to make the end slightly melted. During the pressing process of the pressing plate, the end that is easy to fit gradually forms a shape that fits the pressing groove, and the diameter of the end is larger than the diameter of the cylindrical head. S6: After molding, the temperature control mechanism is cooled and the pressure plate is removed to achieve easy-fit injection molding.

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