Demoulding structure convenient for plastic uptake mould

Abstract

The utility model provides a demolding structure convenient for a plastic uptake mold, which is applied to the technical field of plastic uptake molds and is characterized by comprising a mold seat and a forming mold fixedly arranged on the mold seat, a sliding block is arranged on the side wall of the forming mold in an inclined sliding mode, and the inverted buckle groove is formed in the sliding block. When the sliding blocks slide from bottom to top, the sliding blocks gradually approach inwards so that the buckles can be separated from the back-off grooves. Compared with the prior art, the mold has the technical effects that the sliding blocks are driven by demolding power after a product is subjected to plastic molding to slide obliquely upwards, and the sliding blocks are gradually close to each other inwards under the action of the first inclined surface and the second inclined surface, so that the buckles are separated from the inverted buckle grooves, and the product is smoothly demolded.

Description

Technical Field

[0001] This utility model relates to the field of vacuum forming mold technology, and in particular to a demolding structure that facilitates the demolding of vacuum forming molds. Background Technology

[0002] Vacuum forming is a plastic processing technique. The main principle is to heat a flat, rigid plastic sheet until it softens, then use a vacuum to adhere it to the surface of a mold. After cooling, it is formed and is widely used in plastic packaging, lighting, advertising, decoration and other industries. In order to prevent deformation after vacuum forming, the water temperature of the cooling water and the water volume of the nozzles are adjusted to facilitate smooth demolding of the product.

[0003] However, for some thermoformed products with snap-fit ​​structures, the thermoforming mold has an undercut groove for forming the snap-fit. After thermoforming, the snap-fit ​​is located in the undercut groove, which makes demolding the thermoformed product very difficult. Utility Model Content

[0004] The purpose of this invention is to provide a demolding structure that facilitates the demolding of blister molds. Its advantage is that it facilitates the demolding of blister products with snap-fit ​​structures.

[0005] To achieve the above and other related objectives, this utility model provides the following technical solution:

[0006] A demolding structure for easy thermoforming molds includes a mold base and a forming mold fixedly mounted on the mold base;

[0007] A slider is inclinedly slidably disposed on the side wall of the molding die, and an undercut groove is disposed on the slider; when the slider slides from bottom to top, the slider gradually moves inward to disengage the buckle from the undercut groove.

[0008] In one embodiment of the present invention, the molding die is provided with a groove, and the slider is slidably connected in the groove.

[0009] In one embodiment of the present invention, the sidewall of the chute is provided with an inwardly inclined first slope;

[0010] The slider sidewall is provided with a second inclined surface that fits into the first inclined surface.

[0011] In one embodiment of the present invention, an elastic element with one end connected to the slider is fixedly provided at the bottom of the groove.

[0012] In one embodiment of this utility model, the elastic element is a tension spring;

[0013] The bottom of the slide is fixedly provided with a lower guide post, the bottom of the slider is fixed with an upper guide post, and the two ends of the tension spring are respectively sleeved on the lower guide post and the upper guide post.

[0014] In one embodiment of this utility model, a plurality of forming molds are fixedly arranged on the mold base.

[0015] As described above, the demolding structure of this utility model for facilitating the removal of vacuum forming molds has the following beneficial effects:

[0016] The slider is tilted on the side wall of the forming mold, and the undercut groove is set on the slider. When the product is vacuum-formed, the demolding force drives the slider to slide obliquely upward. Under the action of the first and second inclined surfaces, the slider gradually moves inward, thereby causing the buckle to disengage from the undercut groove, and thus the product is successfully demolded. Furthermore, since there is a tension spring at the bottom of the slider, the slider is pulled back to the initial position under the action of the spring's restoring force. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0018] Figure 2 yes Figure 1 Enlarged diagram of part A in the middle;

[0019] Figure 3 This is a schematic diagram of the molding die in its initial state according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the molding die in the demolding state according to an embodiment of the present invention.

[0021] Reference numerals: 1. Mold base; 2. Molding mold; 3. Slider; 4. Undercut groove; 5. Slide groove; 6. First inclined surface; 7. Second inclined surface; 8. Tension spring; 9. Lower guide post; 10. Upper guide post. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification.

[0023] Please see Figures 1 to 4It should be understood that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and are not intended to limit the scope of this invention. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of this invention, should still fall within the scope of the disclosed technical content. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of this invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of this invention.

[0024] Please see Figure 1 and Figure 2 This utility model provides a demolding structure for easy blister molding, including a mold base 1 and a forming mold 2 fixedly mounted on the mold base 1, with a draft angle provided around the forming mold 2.

[0025] Slider 3 is inclinedly slidably arranged on the side walls around the forming mold 2, and undercut groove 4 is arranged on slider 3; when slider 3 slides from bottom to top, slider 3 gradually moves inward so that the buckle on the thermoformed product is disengaged from the undercut groove 4, thereby achieving smooth demolding.

[0026] Please see Figure 1 and Figure 4 The molding mold 2 has grooves 5 on its side walls, and the slider 3 is slidably connected in the grooves 5. The side walls of the grooves 5 are provided with inwardly inclined first slopes 6, and the side walls of the slider 3 are provided with second slopes 7 that fit with the first slopes 6. When the slider 3 is subjected to an upward demolding force, under the guidance of the first slopes 6 and the second slopes 7, the slider 3 will move inward, thereby separating the undercut groove 4 from the snap fastener of the thermoformed product, and avoiding the situation where the snap fastener is restricted by the undercut groove 4, which would cause demolding difficulties.

[0027] Please see Figure 3 and Figure 4 An elastic element is fixedly installed at the bottom of the slide groove 5, and one end of the elastic element is fixedly connected to the slider 3. In this embodiment, the elastic element can be a tension spring 8. A lower guide post 9 is fixedly installed at the bottom of the slide groove 5, and an upper guide post 10 is fixedly installed at the bottom of the slider 3. The two ends of the tension spring 8 are respectively sleeved on the lower guide post 9 and the upper guide post 10. When the slider 3 slides upward and drives the tension spring 8 to stretch, under the action of the restoring force of the tension spring 8, the slider 3 can automatically return to the initial position so as to perform the next vacuum forming.

[0028] In this embodiment, multiple molding molds 2 can be fixedly installed on the mold base 1 to improve production efficiency.

[0029] Brief description of the demolding process:

[0030] 1. After vacuum forming, the vacuum-formed product is wrapped around the forming mold 2, and the buckle part is embedded in the undercut groove 4.

[0031] 2. During demolding, the external demolding mechanism (such as a robot) applies an upward pulling force, which drives the thermoformed product to move upward. At the same time, the slider 3 is subjected to the demolding pulling force and slides upward along the slide groove 5.

[0032] 3. Due to the cooperation of the first inclined surface 6 and the second inclined surface 7, the slider 3 gradually retracts inward while moving upward, causing the undercut groove 4 to separate from the buckle.

[0033] 4. When the slider 3 moves to a certain height, the buckle completely disengages from the undercut groove 4, and the thermoformed product is successfully demolded.

[0034] 5. After demolding, the restoring force of the tension spring 8 pulls the slider 3 down along the groove 5 until the slider 3 returns to its initial position, so that the next vacuum forming can be performed.

[0035] In summary, this invention utilizes the force of demolding after the product is vacuum-formed to drive the slider 3 to slide obliquely upwards. Under the action of the first inclined surface 6 and the second inclined surface 7, the slider 3 gradually moves inwards, thereby disengaging the buckle from the undercut groove 4 and allowing the product to be successfully demolded. Therefore, this invention effectively overcomes the various shortcomings of the prior art and has high industrial application value.

[0036] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A demolding structure for facilitating the removal of vacuum forming molds, characterized in that: It includes a mold base (1) and a molding die (2) fixedly mounted on the mold base (1); The molding die (2) has a slider (3) that slides obliquely on its side wall, and a snap-fit ​​groove (4) is provided on the slider (3). When the slider (3) slides from bottom to top, the slider (3) gradually moves inward so that the snap-fit ​​is disengaged from the snap-fit ​​groove (4).

2. The demolding structure for facilitating the removal of the vacuum forming mold according to claim 1, characterized in that: The molding die (2) is provided with a groove (5), and the slider (3) is slidably connected in the groove (5).

3. The demolding structure for facilitating the removal of the vacuum forming mold according to claim 2, characterized in that: The sidewall of the chute (5) is provided with an inwardly inclined first slope (6); The slider (3) has a second inclined surface (7) on its side wall that fits against the first inclined surface (6).

4. The demolding structure for facilitating the removal of the vacuum forming mold according to claim 2, characterized in that: The bottom of the slide (5) is fixedly provided with an elastic element at one end connected to the slider (3).

5. The demolding structure for facilitating the removal of the vacuum forming mold according to claim 4, characterized in that: The elastic element is a tension spring (8); The bottom of the slide (5) is fixedly provided with a lower guide post (9), the bottom of the slider (3) is fixed with an upper guide post (10), and the two ends of the tension spring (8) are respectively sleeved on the lower guide post (9) and the upper guide post (10).

6. The demolding structure for facilitating the removal of the vacuum forming mold according to claim 1, characterized in that: Multiple forming molds (2) are fixedly installed on the mold base (1).

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