Full-automatic demolding equipment for silica gel products

Abstract

The utility model discloses a full -automatic stripping equipment of silica gel product, include: control box, three -axis manipulator and stripping assembly. The stripping assembly includes the lower die plate, is provided with the electric jar body on the lower die plate, the electric jar axle fixed connection of electric jar body punch needle fixed plate, the bottom of punch needle fixed plate is provided with punch needle, the free end of punch needle is perpendicular to downward, the lower die plate is provided with the stripping plate below, the stripping plate is located the upper of lower die plate, is provided with the profiling groove on the lower die plate, and it has with the second through -hole of punch needle quantity and position same. The utility model discloses the lower die plate adopts profiling groove, and is pressed tightly through the stripping plate, forms a compact space and is positioned, prevents in the process of stripping in silica gel die plate transition extension, the optimization of punch needle structure can make the stress concentration degree when cutting higher, ensures that silica gel can be quickly, cleanly sheared fracture in the moment of elastic deformation.

Description

Technical Field

[0001] This utility model belongs to the field of silicone product manufacturing, and in particular relates to a fully automatic demolding equipment for silicone products. Background Technology

[0002] Silicone products, with their excellent resistance to high and low temperatures, chemical inertness, biocompatibility, and elasticity, are widely used in electronics, medical, automotive, and consumer goods industries. Their production processes primarily revolve around injection molding and extrusion, with the choice depending on the product's form and performance requirements. Injection molding is a highly efficient and precise method. After the silicone compound is plasticized in an injection molding machine, it is injected at high speed into a closed mold for vulcanization. This method is used for small parts with complex structures, precise dimensions, and high production volumes, such as precision seals. Extrusion molding, on the other hand, is used for the continuous production of profiles with constant cross-sectional lengths. The silicone compound is pushed through a die by a screw to form the desired cross-sectional shape, and then vulcanized in hot air or a vulcanizing chamber.

[0003] For injection-molded silicone products, the final silicone product is generally still partially or completely attached to the silicone template after injection molding. Therefore, a demolding process must be carried out during the production process. This is a key process to separate the cured silicone product from the silicone template.

[0004] However, due to the excellent elasticity and ductility of silicone materials, the demolding process after injection molding is often one of the most troublesome aspects of production yield control. Traditional demolding processes rely on operator experience, and inconsistent hand force and peeling angles can easily lead to tears or localized deformation in the silicone product. Ordinary mechanical stamping demolding often results in irregular burrs, overcutting, or adhesion to the silicone template due to insufficient mold positioning accuracy and poor pressure parameter matching. Current methods include manual trimming, cryogenic trimming, and precision die-cutting. Relatively speaking, manual trimming is still time-consuming and labor-intensive; while cryogenic trimming significantly increases production costs. Therefore, the mainstream method currently is precision die-cutting, and for small-sized silicone products with specific structures, the die-cutting structure needs to be redeveloped by technicians. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: A fully automatic demolding device for silicone products includes: a control box; A three-axis robotic arm, located on one side of the control box and driven by the control box, with its working head being a vacuum suction cup; A demolding assembly, located on the upper side of the control box, is used for demolding silicone products; The demolding assembly includes a lower template, on which a set of supports are vertically arranged. An electric cylinder fixing plate and an electric cylinder body located thereon are fixed to the top of the supports. The electric cylinder shaft of the electric cylinder body passes through the electric cylinder fixing plate and its free end is fixed to a punch plate. A punch is provided at the bottom of the punch plate. The free end of the punch is vertically downward. A release plate is provided below the punch plate, and the release plate has a first through hole with the same number and position as the punches, and the punches always pass through the first through hole; the release plate can generate relative displacement with the punch plate. The ejector plate is located above the lower plate, and the lower plate is provided with a contour groove, which has a second through hole with the same number and position as the punches.

[0006] Preferably, an upper template is provided above the punch stationary plate at intervals. The upper template and the punch stationary plate are fixed to each other, and both are slidably connected to the corresponding bracket using the same linear bearing. The electric cylinder shaft of the electric cylinder body is fixed to the upper surface of the upper template.

[0007] Preferably, the punch has a body with a through hole, which is connected to an external air source through an air pipe disposed between the punch plate and the upper template.

[0008] Preferably, the punch further includes a top with a single beveled cutting edge, the bevel of which faces outward and has an angle of 15° to 20°.

[0009] Preferably, the top has a stepped surface that is recessed, and its outer diameter is comparable to that of the silicone product.

[0010] Preferably, the ejector plate and the punch plate are connected by springs, each spring being wound around a corresponding shaft, and the punch plate having a through hole corresponding to the position of the shaft.

[0011] Preferably, the lower template is the upper support part of the control box.

[0012] Preferably, the control box is equipped with a touch screen and a heat sink.

[0013] Compared with the prior art, the beneficial effects of this utility model are mainly reflected in the following aspects: 1. The lower template adopts a contour groove and is pressed by the demolding template to form a tight space for limiting, preventing the silicone template from excessively extending during demolding; 2. The optimization of the punch structure can make the stress concentration during cutting higher, ensuring that the silicone can be quickly and cleanly sheared and broken at the moment of elastic deformation; 3. The silicone products are collected by blowing air, which is low in cost and high in efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the fully automatic demolding equipment for silicone products provided in this embodiment of the utility model; Figure 2 This is a schematic diagram of the demolding assembly provided in an embodiment of the present invention; Figure 3 This is a cross-sectional view of the punch structure provided in an embodiment of this utility model. Detailed Implementation

[0015] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0016] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0017] Please see Figures 1 to 3 The present invention provides a fully automatic demolding device for silicone products, which mainly includes: a control box 1, a three-axis manipulator 2, and a demolding assembly.

[0018] The three-axis robotic arm 2 is located on one side of the control box 1 and is driven by the control box 1, and its working head is a vacuum suction cup 20. The demolding assembly is located on the upper side of the control box 1 and is used for demolding silicone products. The control box 1 is equipped with a touch screen 3 and a heat sink 4. During the demolding process of silicone products, human-machine interaction is performed through the touch screen 3. The control box 1 receives instructions, and the vacuum suction cup 20 of the three-axis robotic arm 2 accurately places the silicone product and the silicone template connected to it onto the demolding assembly. Electronic components such as controllers and power supplies inside the control box 1 generate heat during operation. The heat sink 4 reduces the temperature inside the box through ventilation and heat conduction, preventing components from jamming or malfunctioning due to overheating, and ensuring long-term stable operation of the equipment.

[0019] Specific examples Figure 2 As shown, the demolding assembly includes a lower template 5. In this embodiment, the lower template 5 is the upper support part of the control box 1, and sufficient support force is required to save space.

[0020] A set of supports 10 is vertically arranged on the lower template 5, and an electric cylinder fixing plate 6 is fixed to the top of the supports 10. An electric cylinder body 7 is fixedly arranged above the electric cylinder fixing plate 6. The electric cylinder shaft of the electric cylinder body 7 passes through the electric cylinder fixing plate 6 and its free end is fixedly connected to the upper template 8 and the punch fixing plate 9. In this preferred embodiment, the upper template 8 and the punch fixing plate 9 are two flat plates, fixedly arranged at intervals between each other, and the electric cylinder shaft of the electric cylinder body 7 is fixed to the upper surface of the upper template 8. As is well known to those skilled in the art, linear bearings can slide freely on an optical axis. In this preferred embodiment, each support 10 is connected to a corresponding linear bearing 11, and the upper template 8 and the punch fixing plate 9 are simultaneously fixed on these four linear bearings 11. That is to say, when the electric cylinder body 7 drives the electric cylinder shaft to move linearly, it can simultaneously drive the upper template 8 and the punch fixing plate 9 to move linearly, and the linear bearing 11 can also play a guiding role.

[0021] Furthermore, a punch 13 is provided at the bottom of the punch plate 9; the free end of the punch 13 is vertically downward. A stripping template 15 is provided below the punch plate 9, the stripping template 15 is located above the lower template 5, and the stripping template 15 has the same number and position of first through holes 19 as the punches 13, and the punches 13 always pass through the first through holes 19.

[0022] The ejector plate 15 and the punch plate 9 are connected by springs 12, each spring 12 wound around a corresponding shaft 18. The punch plate 9 has through holes 16 corresponding to the positions of the shafts 18. Due to the presence of the springs 12, the ejector plate 15 can undergo relative displacement with the punch plate 9, that is, the length of the punch 13 passing through the first through hole 19 will change. The lower template 5 is provided with a contour groove, which also has second through holes 14 with the same number and position as the punches 13.

[0023] Specifically, such as Figure 3 As shown, the punch 13 has a body 130 with a through hole 131. The through hole 131 is connected to an external air source through an air pipe (not shown) disposed between the punch plate 9 and the upper template 8. The punch 13 also includes a top 132 with a single-beveled cutting edge. The bevel of the single-beveled cutting edge faces outward, and its angle is 15°~20°. Preferably, the top 132 has a recessed stepped surface 134, the outer diameter of which is approximately equal to the outer diameter of the silicone product 100.

[0024] The usage process of this utility model is briefly described as follows: The vacuum suction cup 20 of the three-axis robot 2 accurately places the silicone product and the silicone template connected to it into the contour groove of the lower template 5; then the demolding assembly performs a separation action. The electric cylinder body 7 is activated, driving the upper template 8 and the punch plate 9 to move linearly downwards simultaneously. The punch plate 9 drives the demolding template 15 to move downwards as well. The lower template 5 and the demolding template 15 are pressed together, forming a tight space for limiting and preventing the silicone template from excessively extending during demolding. The upper template 8 and the punch plate 9 continue to move linearly downwards under the drive of the electric cylinder body 7. The cutting edge of the punch 13 cuts off the connecting section between the silicone product and the silicone template, and the silicone product 100 is simultaneously housed within the stepped surface 134. The electric cylinder body 7 is reset by the control box 1, and the upper template 8, punch plate 9, and ejector plate 15 are all reset. The vacuum suction cup 20 of the three-axis robot 2 removes the silicone template. Then, the collection box (not shown in the figure) is placed below the ejector plate 15 (this can be done automatically or manually). Air is blown through the air pipe to blow the silicone product 100 into the collection box. Then the next work cycle begins.

[0025] This utility model's three-axis robotic arm 2, used in conjunction with equipment, offers a high degree of automation and saves manpower. The optimized punch structure allows for higher stress concentration during cutting, ensuring that the silicone can be quickly and cleanly sheared and broken at the moment of elastic deformation. Combined with the tight space formed by the contour groove, it can overcome the elasticity of the silicone to the greatest extent, reducing tearing and burrs. Simultaneously, the orderly arrangement of the punches in a queue also serves to assist in limiting the elastic deformation of the silicone, resulting in better demolding performance.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fully automatic demolding device for silicone products, characterized in that, include: Control box (1); A three-axis manipulator (2) is located on one side of the control box (1) and is driven by the control box (1), and its working head is a vacuum suction cup (20). Demolding assembly, which is located on the upper side of the control box (1), is used to demold silicone products; The demolding assembly includes a lower template (5), on which a set of supports (10) are vertically arranged. A cylinder fixing plate (6) and a cylinder body (7) located on the top of the supports (10) are fixed. The cylinder shaft of the cylinder body (7) passes through the cylinder fixing plate (6) and its free end is fixed to a punch plate (9). A punch (13) is provided at the bottom of the punch plate (9). The free end of the punch (13) is vertically downward. A release plate (15) is provided below the punch plate (9). The release plate (15) has the same number and position of first through holes (19) as the punches (13). The punches (13) always pass through the first through holes (19). The release plate (15) can generate relative displacement with the punch plate (9). The ejector plate (15) is located above the lower plate (5). The lower plate (5) is provided with a contour groove and has a second through hole (14) with the same number and position as the punch (13).

2. The fully automatic demolding equipment for silicone products as described in claim 1, characterized in that: The upper template (8) is provided at intervals above the punch plate (9). The upper template (8) and the punch plate (9) are fixed to each other, and the two are slidably connected to the corresponding bracket (10) by the same linear bearing (11). The electric cylinder shaft of the electric cylinder body (7) is fixed to the upper surface of the upper template (8).

3. The fully automatic demolding equipment for silicone products as described in claim 2, characterized in that: The punch (13) has a body (130) with a through hole (131) inside. The through hole (131) is connected to an external air source through an air pipe disposed between the punch plate (9) and the upper template (8).

4. The fully automatic demolding equipment for silicone products as described in claim 3, characterized in that: The punch (13) also includes a top (132) having a single beveled edge with the beveled edge facing outward and the angle being 15°~20°.

5. The fully automatic demolding equipment for silicone products as described in claim 4, characterized in that: The top (132) has a recessed stepped surface (134) with an outer diameter that is comparable to the outer diameter of the silicone product (100).

6. The fully automatic demolding equipment for silicone products as described in claim 1, characterized in that: The ejector plate (15) and the punch plate (9) are connected by springs (12), each spring (12) is wound around a corresponding shaft (18), and the punch plate (9) has a through hole (16) corresponding to the position of the shaft (18).

7. The fully automatic demolding equipment for silicone products as described in claim 1, characterized in that: The lower template (5) is the upper support part of the control box (1).

8. The fully automatic demolding equipment for silicone products as described in claim 1, characterized in that: The control box (1) is equipped with a touch screen (3) and a heat sink (4).

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