Injection mold for candy box

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold for a candy box, which comprises a front mold plate, a front mold plate bottom plate, a rear mold plate, a rear mold plate bottom plate and a push plate arranged between the front mold plate and the rear mold plate, a heat flow inlet is arranged on the front mold plate bottom plate, and an injection cavity is formed between the push plate and the front mold plate. The hot flow inlet is communicated with the injection molding cavity, and a blowing ejection channel is arranged between the push plate and the front mold plate; the air blowing ejection channel is communicated with an external air blowing device, a hot melting material is injected into the injection molding cavity through the hot flow inlet, a product is formed in the injection molding cavity, when mold drawing is needed, air is introduced into the air blowing ejection channel, the vacuum negative pressure state in the injection molding cavity is removed, the air ejects the portion between the push plate and the front mold plate through the injection molding cavity, and the product is formed. Product deformation caused by the fact that the stress at the opening end is larger than that at other positions when the product is ejected and demoulded is prevented, the demoulding speed is increased, meanwhile, the injection product is protected, and use is convenient.

Description

Technical field:

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold for a candy box. Background technology:

[0002] Injection molding is a method for producing industrial products. Products usually use rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding, compression molding and die casting. Injection molding machine (abbreviated as injection machine or injection molding machine) is the main molding equipment for using thermoplastic plastics or thermosetting materials to make plastic products of various shapes using plastic molding molds. Injection molding is achieved through injection molding machine and mold. Injection mold is a tool for producing plastic products and also a tool for giving plastic products complete structure and precise size. Injection molding refers to the process of injecting heated and molten plastic into the mold cavity under high pressure by the injection molding machine, and obtaining a molded product after cooling and solidification. However, when injecting existing candy boxes, the mouth end is subjected to greater force than other positions when the product is ejected from the mold, which easily causes deformation of the product during demoulding. In addition, since its inner wall is generally hollow and has low roughness, it is easy to form a hollow negative pressure suction inside the product. It is difficult to demould by relying solely on ejector pins and ejector plates, and it is easy to cause product damage and inconvenient demoulding. Utility model content:

[0003] The purpose of the utility model is to provide an injection mold for a candy box to address the deficiencies in the prior art, which can reduce damage to the product during the demoulding process and improve the demoulding efficiency.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an injection mold for a candy box, comprising a front template, a front template bottom plate, a rear template, a rear template bottom plate, and a push plate arranged between the front template and the rear template, a heat flow inlet is provided on the front template bottom plate, an injection cavity is formed between the push plate and the front template, the heat flow inlet is connected to the injection cavity, an air blowing ejection channel is provided between the push plate and the front template, several injection cavities are provided, the air outlet end of the air blowing ejection channel is connected to the injection cavity, and the air inlet end of the air blowing ejection channel is connected to the external blowing device.

[0005] A further improvement to the above solution is that the bottom end surface of the front template is provided with a first injection cavity, and the top end surface of the push plate is provided with a second injection cavity, and the first injection cavity and the second injection cavity are bonded to form the injection cavity.

[0006] A further improvement to the above scheme is that the air blowing ejection channel includes a first air blowing channel and a second air blowing channel, the first air blowing channel is arranged in an I-shape between the push plate and the front template, and a plurality of second air blowing channels are provided, and one end of several second air blowing channels is connected to the first air blowing channel, and the other end of several second air blowing channels is respectively connected to the injection cavity.

[0007] A further improvement to the above scheme is that an inner core is provided in the injection cavity, the bottom of the inner core is fixedly connected to the interior of the injection cavity, the top of the inner core extends to a position close to the top of the injection cavity, and there is a gap between the top of the inner core and the top of the injection cavity.

[0008] A further improvement to the above solution is that it also includes a sliding drive assembly for pushing the push plate to slide in the vertical direction, the sliding drive assembly includes a positioning guide column, a sliding sleeve slidably arranged on the positioning guide column in the vertical direction, and a ejector pin that can be pushed back and forth in the vertical direction, the front template and the push plate are fixedly arranged on the sliding sleeve, and the ejector pin is respectively connected to the front template and the push plate.

[0009] A further improvement to the above solution is that it further includes a control module, which is used to control the on-off of the air path in the air blowing and ejecting channel.

[0010] The beneficial effects of the utility model are as follows: the utility model comprises a front template, a front template bottom plate, a rear template, a rear template bottom plate, and a push plate arranged between the front template and the rear template, the front template bottom plate is provided with a heat flow inlet, an injection cavity is formed between the push plate and the front template, the heat flow inlet is communicated with the injection cavity, an air blowing ejection channel is provided between the push plate and the front template, a plurality of injection cavities are provided, an air outlet end of the air blowing ejection channel is communicated with the injection cavity, and an air inlet end of the air blowing ejection channel is communicated with an external air blowing device;

[0011] The utility model discloses an air blowing ejection channel is connected with an external air blowing device, hot melt material is injected into the injection cavity through the hot flow inlet, and the product is formed in the injection cavity. When demolding is required, gas is introduced into the air blowing ejection channel to remove the vacuum negative pressure state in the injection cavity, and the gas pushes up the space between the push plate and the front template through the injection cavity, thereby preventing the product from being deformed due to the greater force at the mouth end than other positions when the product is ejected and demolded, thereby improving the demolding speed while protecting the injection molded product and facilitating use. Description of the drawings:

[0012] Figure 1 This is a schematic structural diagram of the utility model.

[0013] Figure 2 It is a schematic diagram of the internal structure of the utility model.

[0014] Figure 3 It is a bottom view of the front template of the utility model.

[0015] Figure 4 This is a schematic diagram of the three-dimensional structure of the candy box parts formed by injection molding according to the utility model.

[0016] Explanation of the accompanying drawings: front template 1, first injection cavity 11, front template bottom plate 2, hot flow inlet 21, rear template 3, rear template bottom plate 4, push plate 5, second injection cavity 51, injection cavity 6, inner core 61, blowing ejection channel 7, first blowing channel 71, second blowing channel 72, sliding drive assembly 8, positioning guide column 81, sliding sleeve 82, ejector pin 83. Specific implementation method:

[0017] The present invention will be further described below with reference to the accompanying drawings. Figure 1-4 As shown, the utility model provides an injection mold for a candy box, comprising a front template 1, a front template bottom plate 2, a rear template 3, a rear template bottom plate 4, and a push plate 5 arranged between the front template 1 and the rear template 3. A heat flow inlet 21 is provided on the front template bottom plate 2, an injection cavity 6 is formed between the push plate 5 and the front template 1, the heat flow inlet 21 is connected to the injection cavity 6, an air blowing ejection channel 7 is provided between the push plate 5 and the front template 1, and the injection cavity 6 is provided with a plurality of air blowing ejection channels 7. The air outlet end of the air blowing ejection channel 7 is connected to the injection cavity 6. The air inlet end of the channel 7 is connected with the external blowing device, and the air ejection channel 7 is connected with the external blowing device. The hot melt material is injected into the injection cavity 6 through the hot flow inlet 21, and the product is formed in the injection cavity 6. When demolding is required, gas is introduced into the air ejection channel 7 to remove the vacuum negative pressure state in the injection cavity 6, and the gas passes through the injection cavity 6 to lift the space between the push plate 5 and the front template 1, preventing the product from being deformed due to the greater force on the mouth end than other positions when the product is ejected and demolded, thereby improving the demolding speed while protecting the injection molded product and facilitating use.

[0018] The bottom end face of the front template 1 of the present invention is provided with a first injection cavity 11, and the top end face of the push plate 5 is provided with a second injection cavity 51. The first injection cavity 11 and the second injection cavity 51 are bonded together to form an injection cavity 6. When bonded together, the hot melt material is injected into the injection cavity 6 through the hot flow inlet 21 to form the molding. Of course, the injection cavity 6 of the present invention is not limited to the injection molding of a certain component of the candy box, but can also be multiple components. The present invention is not limited to this.

[0019] The blowing ejection channel 7 of the present invention includes a first blowing channel 71 and a second blowing channel 72. The first blowing channel 71 is arranged in an I-shape between the push plate 5 and the front template 1. A plurality of second blowing channels 72 are provided, and one end of the plurality of second blowing channels 72 is connected to the first blowing channel 71, and the other ends of the plurality of second blowing channels 72 are respectively connected to the injection cavity 6. Multiple blowing channels are respectively connected to the injection cavity 6, which can reduce the gas pressure formed in the injection cavity 6 in a single blowing channel and prevent damage to the mold.

[0020] An inner core 61 is provided in the injection cavity 6 of the present invention, the bottom of the inner core 61 is fixedly connected to the inside of the injection cavity 6, the top of the inner core 61 extends to a position close to the top of the injection cavity 6, and there is a gap between the top of the inner core 61 and the top of the injection cavity 6.

[0021] The present invention also includes a sliding drive assembly 8 for pushing the push plate 5 to slide in the vertical direction. The sliding drive assembly 8 includes a positioning guide column 81, a sliding sleeve 82 slidably arranged on the positioning guide column 81 in the vertical direction, and an ejector pin 83 that can be pushed back and forth in the vertical direction. The front template 1 and the push plate 5 are fixedly arranged on the sliding sleeve 82. The ejector pin 83 is respectively connected to the front template 1 and the push plate 5 with a drive. When demoulding, the ejector pin 83 pushes the front template 1 upward, and the air ejection channel 7 assists in lifting the front template 1 to complete the demoulding.

[0022] The utility model further comprises a control module, which is used to control the on-off of the air path in the air blowing and ejecting channel 7. The control module facilitates the on-off control of the air path to facilitate the demoulding.

[0023] Working principle:

[0024] During operation, the air ejection channel 7 is connected to the external air blowing device, and the hot melt material is injected into the injection cavity 6 through the hot flow inlet 21 to form a product in the injection cavity 6. When demolding is required, gas is introduced into the air ejection channel 7 to remove the vacuum negative pressure state in the injection cavity 6, and the gas passes through the injection cavity 6 to lift up the space between the push plate 5 and the front template 1, preventing the product from being deformed due to the greater force at the mouth end than other positions when the product is ejected and demolded, thereby improving the demolding speed while protecting the injection molded product and facilitating use.

[0025] Of course, the above is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present invention patent application are included in the scope of the present invention patent application.

Claims

1. An injection mold for a candy box, characterized by: The invention comprises a front template (1), a front template bottom plate (2), a rear template (3), a rear template bottom plate (4), and a push plate (5) arranged between the front template (1) and the rear template (3); a heat flow inlet (21) is arranged on the front template bottom plate (2); an injection cavity (6) is formed between the push plate (5) and the front template (1); the heat flow inlet (21) is connected to the injection cavity (6); an air blowing ejection channel (7) is arranged between the push plate (5) and the front template (1); a plurality of injection cavities (6) are provided; an air outlet end of the air blowing ejection channel (7) is connected to the injection cavity (6); and an air inlet end of the air blowing ejection channel (7) is connected to an external air blowing device.

2. The injection mold for a candy box according to claim 1, characterized in that: The bottom end surface of the front template (1) is provided with a first injection cavity (11), and the top end surface of the push plate (5) is provided with a second injection cavity (51), and the first injection cavity (11) and the second injection cavity (51) are bonded together to form the injection cavity (6).

3. The injection mold for a candy box according to claim 2, characterized in that: The blowing ejection channel (7) comprises a first blowing channel (71) and a second blowing channel (72), wherein the first blowing channel (71) is arranged in an I-shape between the push plate (5) and the front template (1), and a plurality of second blowing channels (72) are provided, and one end of a plurality of the second blowing channels (72) is connected to the first blowing channel (71), and the other end of a plurality of the second blowing channels (72) is respectively connected to the injection cavity (6).

4. The injection mold for a candy box according to claim 1, characterized in that: An inner core (61) is provided in the injection cavity (6), the bottom of the inner core (61) is fixedly connected to the inside of the injection cavity (6), the top of the inner core (61) extends to a position close to the top of the injection cavity (6), and there is a gap between the top of the inner core (61) and the top of the injection cavity (6).

5. The injection mold for a candy box according to claim 1, characterized in that: The invention also includes a sliding drive assembly (8) for pushing the push plate (5) to slide in the vertical direction, the sliding drive assembly (8) includes a positioning guide column (81), a sliding sleeve (82) slidably arranged on the positioning guide column (81) in the vertical direction, and a ejector pin (83) that can be reciprocated in the vertical direction. The front template (1) and the push plate (5) are fixedly arranged on the sliding sleeve (82), and the ejector pin (83) is respectively connected to the front template (1) and the push plate (5) with a drive.

6. The injection mold for a candy box according to claim 1, characterized in that: It also includes a control module, which is used to control the on-off of the air path in the air blowing and ejecting channel (7).

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