Welding platform and welding system for barrel mold for compression molding of reflector

Abstract

The invention provides a welding platform and a welding system of a barrel mold for reflector compression molding. The welding platform comprises a supporting table, a table top surface layer and a magnetic attraction component. The supporting table comprises a base and a mounting groove; the table surface layer is formed on the outer surface of the base; the magnetic attraction component is arranged in the mounting groove; the surface layer of the table top is provided with arc sections and linear sections. The two straight line sections are integrally bent relative to the arc section and are formed at the side surface position of the base; the magnetic attraction component is configured to be freely switched between the working state that the barrel mold is tightly attracted to the arc section and the non-working state that attraction fixation between the barrel mold and the arc section is relieved. The arc section on the surface layer of the table board is perfectly attached to the surface of the barrel mold, the problem of poor attachment caused by a traditional welding platform is solved, and sharp mouths are reduced in the welding process; the uniform and stable adsorption force is provided through the magnetic attraction component, the mold can be firmly attracted to the surface layer of the table top in the working state, and therefore the problem of local stress concentration caused by traditional mechanical clamping is solved.

Description

Technical Field

[0001] The invention relates to the technical field of reflective sheet moulds, in particular to a welding platform and a welding system of a barrel mould used for press-forming reflective sheets. Background Art

[0002] When the master mold (round mold) of the barrel mold is welded, the joint seam will have a pointed mouth, and when the master mold is electroplated and copied into a mold for production, the joint seam will have a concave mouth. The concave mouth has a great influence on the pressing and forming of the reflective sheet, which will cause the joint seam concave mouth range of the reflective sheet to turn black, and even the joint seam concave mouth position is not easy to press and form. It is necessary to increase the pressure of the pressure roller during production to form the reflective sheet, which can easily greatly shorten the service life of the mold.

[0003] Moreover, when the concave mouth of the joint is serious, a dislocated black mark will be formed near the joint after the reflective sheet is pressed and formed, which will affect both the reflective effect and the retroreflective coefficient of the reflective sheet. In particular, the existing mother mold requires multiple cylindrical molds to be spliced ​​together, resulting in relatively more joint seams in the overall circular mold.

[0004] In order to solve the problem of the sharp beak when welding the mold seams, the flat structure of the platform surface needs to be eliminated. In addition, since the round mold is formed by welding 2-4 pieces of barrel molds together, it needs to be bent to a certain degree during welding due to the large plate surface. However, after bending, there is a certain degree of curvature that cannot be completely fitted with the welding platform, which makes it very easy to form a sharp beak during welding, especially after the barrel mold is thickened, because its flexibility becomes worse and it is more difficult to bend, and the overall fit becomes worse. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a welding platform and a welding system for a barrel mold for press-forming a reflective sheet, so as to solve the above-mentioned problem.

[0006] The present invention adopts the following scheme:

[0007] The present application provides a welding platform for a barrel mold for press-forming a reflective sheet, comprising a support platform, a table surface layer and a magnetic attraction component; the support platform comprises a U-shaped base and a mounting groove formed in the middle of the base; the table surface layer is formed on the outer surface of the base, and is used to cover at least the top opening of the mounting groove; the magnetic attraction component is arranged in the mounting groove, and is used to attract the barrel mold to be welded to the table surface layer; the table surface layer has: an arc segment configured to be adapted to fit the barrel mold, and straight segments connected to the two side edges of the arc segment; the two straight segments are integrally bent relative to the arc segment and formed at the side position of the base; the magnetic attraction component is configured to be able to switch freely between a working state in which the barrel mold is tightly attracted to the arc segment, and a non-working state in which the attraction and fixation between the two is released.

[0008] As a further improvement, the bottom of the base is a supporting plane, the U-shaped opening of the base is arranged upward, and the mounting groove is formed in the opening.

[0009] As a further improvement, the base is configured as a U-shaped structure with equal wall thickness, the magnetic attraction member is configured in the inner wall, and the straight line segment fits and covers the outer wall surfaces on both sides.

[0010] As a further improvement, the table top surface is made of stainless steel with a thickness of 1 cm to 3 cm, and the arc segments and the straight line segments are set with equal thickness.

[0011] As a further improvement, the surface of the arc segment is a mirror structure, the arc length is 10 cm to 25 cm, and the arc radian is 0.1 rad to 0.7 rad.

[0012] As a further improvement, the magnetic attraction component includes a magnet base and a strong magnet mounted on the magnet base; the magnet base is configured to move up and down in the installation groove, and is used to switch to a non-working state after moving downward away from the surface of the table.

[0013] As a further improvement, a control member is also included; the magnet base and the strong magnet can be slidably arranged in the groove wall of the installation groove, and the control member is used to drive the magnet base to drive the strong magnet to move upward or downward.

[0014] As a further improvement, the control member is configured as a manual threaded lifting rod or an electric threaded lifting rod.

[0015] As a further improvement, the magnetic attraction component includes an electromagnet fastened in the installation groove, and the electromagnet is arranged on the inner side of the table surface. It switches to a working state after power is turned on, and switches to a non-working state after power is turned off.

[0016] The present application further provides a welding system, based on the welding platform of the barrel mold for press-forming the reflective sheet, for implementing the following steps:

[0017] S1: Fit the barrel mold to be welded to the outer side of the table surface so that the magnetic attraction component and the barrel mold are spaced apart from each other;

[0018] S2: The magnetic attraction component is controllably switched to a working state, and the barrel mold to be welded is attracted to the surface of the table;

[0019] S3: further welding the barrel mold in a tightened state on a support table to reduce the formation of the splicing tip between the welding seams;

[0020] S4: gradually welding a plurality of cylindrical molds on the support table until a whole cylindrical mold capable of being used for press molding of a reflective sheet is formed;

[0021] S5: Control the magnetic attraction component to switch from the working state to the non-working state, and remove the entire circular mold that has been welded from the support table.

[0022] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0023] 1. The welding platform of the barrel mold for press-forming reflective sheeting of the present application perfectly fits with the surface of the barrel mold through the arc segment structure of the table surface, effectively avoiding the poor fitting problem caused by the flat structure of the traditional welding platform, reducing the formation of sharp mouths during welding, and the straight line segments on both sides of the table surface are integrally bent, which further enhances the stability of the mold fixation and ensures that the barrel mold will not shift or deform during welding.

[0024] 2. The magnetic suction component provides uniform and stable adsorption force, which can firmly adsorb the mold on the surface of the table in the working state, thereby eliminating the local stress concentration problem caused by traditional mechanical clamping, reducing the joint concave mouth and welding deformation, and can quickly release the adsorption to switch to the non-working state, which is convenient for rapid loading and unloading of the mold, improving welding efficiency and reducing operation difficulty.

[0025] 3. The integrated setting of arc segments and straight segments enables the mold to be fully fitted in one placement, avoiding the tedious operation of multiple adjustments and greatly improving the processing efficiency. The easy switching of magnetic components makes the loading and unloading and fixing of the mold easier, improving the welding fit and the quality of the seams. There is no need to increase the pressure of the roller during the pressing process of the reflective sheet, reducing the mechanical wear of the mold and thus extending the service life of the mold. In addition, it can not only reduce the defects of the seams such as black marks and dislocation after the reflective sheet is pressed, but also eliminate the defects such as the seam concave mouth, making the surface of the pressed reflective sheet smoother, and the reflective effect and retroreflection coefficient are significantly improved, ensuring that the product meets the high standards of optical performance requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional view of a welding platform of a drum mold for press-forming a reflective sheet according to an embodiment of the present invention at a transverse position;

[0027] Figure 2 It is a cross-sectional view of a welding platform of a drum mold for press-forming a reflective sheet in a longitudinal direction according to an embodiment of the present invention;

[0028] Figure 3 It is a flow chart of a welding system of a welding platform of a barrel mold for press-forming a reflective sheet according to an embodiment of the present invention.

[0029] Icon: 1-base; 2-mounting slot; 3-arc segment; 4-straight segment; 5-magnet base; 6-strong magnet; 7-manual threaded lifting rod; 8-screw connection. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0031] Example

[0032] Combination Figure 1 to Figure 2 The present embodiment provides a welding platform for a barrel mold for press-forming a reflective sheet, comprising a support platform, a table surface layer and a magnetic attraction component. The support platform comprises a U-shaped base 1 and a mounting groove 2 formed in the middle of the base 1. The table surface layer is formed on the outer surface of the base 1, and is used to at least cover the top opening of the mounting groove 2. The magnetic attraction component is arranged in the mounting groove 2, and is used to attract the barrel mold to be welded to the table surface layer. The table surface layer has: an arc segment 3 configured to fit the barrel mold, and a straight line segment 4 connected to the two sides of the arc segment 3, and the two straight line segments 4 are integrally bent relative to the arc segment 3 and formed at the side position of the base 1. The magnetic attraction component is configured to be able to switch freely between a working state in which the barrel mold is tightly attracted to the arc segment 3, and a non-working state in which the attraction and fixation between the two are released.

[0033] Obviously, in the prior art, the welding platform with a planar structure is not only not conducive to the fitting during welding, but also easy to damage the mold during the clamping and fastening of the mold. In this regard, in this embodiment, the arc segment 3 structure of the table surface is perfectly fitted with the surface of the barrel mold, effectively avoiding the poor fitting problem caused by the plane structure of the traditional welding platform, reducing the formation of the sharp mouth during welding, and the straight line segments 4 on both sides of the table surface are integrally bent, which further enhances the stability of the mold fixation and ensures that the barrel mold will not shift or deform during the welding process.

[0034] Furthermore, by providing a uniform and stable adsorption force through the magnetic attraction component, the mold can be firmly attracted to the surface of the table in the working state, thereby eliminating the problem of local stress concentration caused by traditional mechanical clamping, reducing the joint concave mouth and welding deformation, and being able to quickly release the attraction to switch to the non-working state, facilitating the rapid loading and unloading of the mold, improving welding efficiency and reducing the difficulty of operation.

[0035] In particular, the integrated setting of the arc segment 3 and the straight segment 4 allows the mold to be fully fitted in one placement, avoiding the tedious operation of multiple adjustments and greatly improving the processing efficiency. The easy switching of the magnetic suction component makes the loading and unloading and fixing of the mold easier, improves the welding fit and the quality of the seams, and there is no need to increase the pressure of the pressing roller during the pressing process of the reflective sheet, reducing the mechanical wear of the mold and thus extending the service life of the mold. In addition, it can not only reduce the defects such as black marks and misalignment of the seams after the reflective sheet is pressed, but also eliminate defects such as seam concave mouths, making the surface of the pressed reflective sheet smoother, and the reflective effect and retroreflection coefficient are significantly improved, ensuring that the product meets high standards of optical performance requirements.

[0036] like Figure 1 As shown, in this embodiment, the bottom of the base 1 is a support plane, and its U-shaped opening is set upward, and the mounting groove 2 is formed in the opening. On the one hand, the support plane at the bottom of the base 1 provides a wide and stable contact area, ensuring the stability of the welding platform during use, and effectively preventing the platform from tilting or moving due to uneven force. On the other hand, the U-shaped opening facing upward allows the mounting groove 2 to be cleverly embedded in the opening, which not only saves space for the overall structure, but also ensures that the magnetic suction component can fully fit the barrel mold to improve the adsorption effect.

[0037] Specifically, the base 1 is configured as a U-shaped structure with equal wall thickness, the magnetic attraction component is configured in the inner wall, and the straight line segment 4 fits and covers the outer wall surfaces on both sides. Among them, the U-shaped structure with equal wall thickness can effectively balance the distribution of internal and external forces, making it more resistant to deformation during welding, and ensuring the stability of the platform under complex working conditions such as high temperature and high pressure. In addition, the magnetic attraction component is embedded in the inner wall of the base 1, and can maintain uniform adsorption force with the contact surface of the barrel mold, avoiding the problem of local stress concentration that may be caused by traditional clamping methods, thereby improving the accuracy of mold welding. In addition, the magnetic attraction component is not in direct contact with the barrel mold, which greatly improves the protection of the barrel mold.

[0038] Preferably, the table surface is made of stainless steel with a thickness of 1 cm to 3 cm, and the arc segment 3 and the straight segment 4 are set to the same thickness. Therefore, the stainless steel material has excellent strength and corrosion resistance, can withstand high temperature and mechanical stress during welding, and avoid rust or wear after long-term use, ensuring the long-term stable operation of the platform. In addition, when the table surface is 2 cm thick, the thickness is more reasonable, providing sufficient rigidity for the table surface, avoiding bending or deformation of the surface during welding and affecting the mold fitting effect.

[0039] Preferably, the surface of the arc segment 3 is a mirror structure, the arc length is 10 cm to 25 cm, and the arc radian is 0.1 rad to 0.7 rad. The surface of the arc segment 3 with a mirror structure has a higher flatness, and the contact with the barrel mold is closer, which reduces the contact gap caused by the rough surface during welding, thereby effectively avoiding the formation of a pointed mouth or a concave mouth. In addition, the size specifications of the arc can provide precise support for molds of different specifications, improving the adaptability and reliability of welding.

[0040] like Figure 2 As shown, in a preferred embodiment, the magnetic attraction member includes a magnet base 5 and a strong magnet 6 mounted on the magnet base 5. The magnet base 5 is configured to move up and down in the mounting groove 2, and is used to switch to a non-working state after moving downward away from the surface of the table. It can be understood that the magnet base 5 is driven to move up and down by an external force, so as to increase the suction force when it is close to the surface of the table, and reduce the suction force when it is away from the surface of the table, thereby realizing the suction fixation or release of the barrel mold.

[0041] Specifically, the magnetic attraction component also includes a control component. The magnet base 5 and the strong magnet 6 can be slidably arranged in the groove wall of the mounting groove 2, and the control component is used to drive the magnet base 5 to drive the strong magnet 6 to move up or down. It should be mentioned that the control component is configured as a manual threaded lifting rod 7 or an electric threaded lifting rod. Obviously, the manual threaded lifting rod 7 or the electric threaded lifting rod is connected to the magnet base 5 in a transmission manner to ensure that the magnet base 5 in the base 1 can be controlled by an external force to move up and down. Preferably, the magnet base 5 extends a screw connection 8, and the manual threaded lifting rod 7 is linked with the screw connection 8, and the screw connection 8 is manually controlled to move up and down relative to the base 1. The U-shaped base 1 has a space margin for moving up and down in the lateral direction, thereby allowing the screw connection 8 to drive the magnet base 5 to move up or down freely.

[0042] In other embodiments, the magnetic attraction member includes an electromagnet (not shown) fastened in the mounting groove 2, and the electromagnet is arranged on the inner side of the table surface, which switches to a working state after power is turned on, and switches to a non-working state after power is turned off. Thus, by directly turning power on or off the magnetic attraction member, the state switching is directly controlled, the lifting and lowering movement is eliminated, and the barrel mold can be fixed or released more conveniently and quickly.

[0043] Combination Figure 3 This embodiment further provides a welding system, based on the welding platform of the barrel mold for press-forming the reflective sheet, for implementing the following steps:

[0044] S1: Fit the barrel mold to be welded to the outer side of the table surface so that the magnetic attraction component and the barrel mold are spaced apart from each other;

[0045] S2: The magnetic attraction component is controllably switched to a working state, and the barrel mold to be welded is attracted to the surface of the table;

[0046] S3: further welding the barrel mold in a tightened state on a support table to reduce the formation of the splicing tip between the welding seams;

[0047] S4: gradually welding a plurality of cylindrical molds on the support table until a whole cylindrical mold capable of being used for press molding of a reflective sheet is formed;

[0048] S5: Control the magnetic attraction component to switch from the working state to the non-working state, and remove the entire circular mold that has been welded from the support table.

[0049] Therefore, the welding system combines the above-mentioned welding platform to provide a more efficient, accurate and easy-to-operate welding process for the barrel mold, ensuring accurate positioning during the welding process, reducing defects in the joints, and improving the overall flatness of the mold.

[0050] In addition, the controllable magnetic suction function switching and simplified welding steps make the entire welding process more efficient, reduce the complexity and time cost of manual operation, eliminate the sharp and concave mouth of the seam, and the mold can better suppress the reflective sheet, improving the optical performance and yield rate of the reflective sheet. The welding system is suitable for barrel molds of different curvatures and sizes, providing flexible support for the processing needs of various products.

[0051] The above are only preferred implementations of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.

Claims

1. A welding platform for a barrel mold for press-forming reflective sheeting, characterized in that: include: The support platform comprises a U-shaped base and a mounting groove formed in the middle of the base; A table surface layer is formed on the outer surface of the base and is used to at least cover the top opening of the installation groove; A magnetic attraction component is arranged in the installation groove and is used to attract the barrel mold to be welded to the surface of the table; in, The table surface layer has: The circular arc segment is configured to fit the cylindrical mold; The straight line segments are connected to the two sides of the arc segment; the two straight line segments are integrally bent relative to the arc segment and formed at the side positions of the base; and, The magnetic attraction component is configured to be able to switch freely between a working state in which the drum mold is tightly attracted to the arc segment and a non-working state in which the attraction and fixation between the two are released.

2. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 1, characterized in that: The bottom of the base is a supporting plane, the U-shaped opening of the base is arranged upward, and the mounting groove is formed in the opening.

3. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 1, characterized in that: The base is configured as a U-shaped structure with equal wall thickness, the magnetic attraction component is configured in the inner wall, and the straight line segment fits and covers the outer wall surfaces on both sides.

4. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 1, characterized in that: The table top surface is made of stainless steel with a thickness of 1 cm to 3 cm, and the arc segment and the straight line segment are set with equal thickness.

5. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 4 is characterized in that: The surface of the arc segment is a mirror structure, the arc length is 10 cm to 25 cm, and the arc radian is 0.1 rad to 0.7 rad.

6. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 1, characterized in that: The magnetic attraction component includes a magnet base and a strong magnet placed on the magnet base; the magnet base is configured to move up and down in the installation groove, and is used to switch to a non-working state after moving downward away from the surface of the table.

7. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 6, characterized in that: It also includes a control member; the magnet base and the strong magnet can be slidably arranged in the groove wall of the installation groove, and the control member is used to drive the magnet base to drive the strong magnet to move upward or downward.

8. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 7, characterized in that: The control member is configured as a manual threaded lifting rod or an electric threaded lifting rod.

9. The welding platform of the barrel mold for press-forming reflective sheeting according to claim 1, characterized in that: The magnetic attraction component includes an electromagnet fastened in a mounting groove, and the electromagnet is arranged on the inner side of the table surface layer. The electromagnet is switched to a working state after power is turned on, and is switched to a non-working state after power is turned off.

10. A welding system, characterized in that: The welding platform of the barrel mold for press-forming reflective sheeting according to any one of claims 1 to 9 is used to implement the following steps: S1: Fit the barrel mold to be welded to the outer side of the table surface so that the magnetic attraction component and the barrel mold are spaced apart from each other; S2: The magnetic attraction component is controllably switched to a working state, and the drum mold to be welded is attracted to the surface of the table; S3: further welding the barrel mold in a tightened state on a support table to reduce the formation of a splicing tip between the welding seams; S4: gradually welding a plurality of cylindrical molds on the support table until a whole cylindrical mold capable of being used for press molding of reflective sheets is formed; S5: Control the magnetic attraction component to switch from the working state to the non-working state, and remove the entire circular mold that has been welded from the support table.

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