Track passivation device used before foaming and dispensing of stainless steel cabinet door plate

Abstract

The utility model relates to a track passivation device used before foaming and dispensing of a stainless steel cabinet door plate, and belongs to the technical field of cabinet processing equipment. The device comprises a lower die and an upper die which are vertically opposite in the vertical direction, the top of the lower die is a working face, a stainless steel door plate is placed on the working face, the stainless steel door plate is clamped on the working face through clamp equipment and moves in the transverse direction or the vertical direction, and a tail handle of the upper die right faces a CNC hitting head; the upper die structurally comprises an upper die clamping groove used for assembling, a punch is arranged below the upper die clamping groove, a tail handle is arranged above the upper die clamping groove, and an end face protrusion is arranged on the bottom face of the punch. A CNC hitting head directly faces the tail handle and intermittently hammers to drive a punch to synchronously hammer the stainless steel door plate on the working face in the vertical direction, and concave crossed reticulate patterns distributed in an intermittent track line mode are formed in the dispensing coverage area on the stainless steel door plate. According to the utility model, a concave reticulate pattern structure is formed in a dispensing coverage area, so that the cured and shaped adhesive tape has an anti-tear effect.

Description

Technical Field

[0001] The utility model relates to the technical field of cabinet processing equipment, in particular to a track passivation device used before foaming and gluing of a stainless steel cabinet door panel. Background Art

[0002] In order to meet the IP level requirements of customers for their customized chassis and cabinets, the industry practice of sealing the stainless steel cabinet door panels and the frame mainly relies on on-site foaming and dispensing before the door panels are assembled. The CNC dispensing machine evenly discharges the two-component glue from the mixing head along the programmed X-axis and Y-axis tracks on the inner surface of the door panels. After curing, a closed path is formed that can be elastically fitted with the edge of the frame during assembly. Under the buckling action of the door lock, with the door panels as the interface, an IP level that meets customer needs is formed, constructing a long-term and effective working protection space for electrical components.

[0003] At present, in the chassis and cabinet industry, the process flow before the foaming and gluing of stainless steel cabinet door panels is sheet metal unfolding and cutting, bending, welding, cleaning and decontamination, drying, and foaming and gluing. Because the door panels and the box or cabinet body need to be opened and closed frequently, the glue-foaming parts on the door panels bear the function of dynamic sealing, and the frequent elastic extrusion causes local slippage and detachment of the glue-foaming parts, and customers often complain. Moreover, the after-sales service for such glue failure is extremely cumbersome, and the door panels need to be removed, packed and returned to the factory, all existing glue paths need to be cleared, chemical cleaning needs to be performed again, and the gluing process needs to be repeated. Finally, the panels need to be packed and sent to the customer through logistics to reinstall the door panels, resulting in high after-sales service costs. If the customer's electrical integration progress is affected, there is a possibility of losing the customer.

[0004] Therefore, in order to improve the adhesion of stainless steel cabinet door panels during glue dispensing, cabinet suppliers often insert a glue path passivation process before the glue dispensing process at any cost. Generally, chemical and physical methods are used to achieve passivation: the first method is to use a special stainless steel cleaning liquid to perform micro-corrosion chemical cleaning on the path area where glue is to be dispensed, and increase the adhesion between the foam glue and the stainless steel substrate by increasing the microscopic surface area of ​​the glue dispensing contact area; however, this cleaning process using chemical means can only be a temporary emergency measure in an environment with strict environmental protection requirements; although it can achieve the purpose of increasing adhesion, it is time-consuming, labor-intensive and not environmentally friendly. The second method is to use a physical method of high-pressure sandblasting to increase the microscopic unevenness of the glue path area on the inner surface of the stainless steel door panel where glue is to be dispensed, so as to achieve the purpose of physically preventing the foaming glue from falling off; however, although the second method is feasible, the sandblasting environment is harsh, and the sandblasting gun needs to be operated in a dedicated enclosed space. Workers need to wear protective clothing and special shoes and hats, and the workpiece after sandblasting needs to be cleaned with high-pressure water or compressed air; in order to obtain a consistent visual surface, all areas inside the door outside the glue path are fully covered with sandblasting; therefore, using sandblasting to improve the adhesion of the door panel after glue dispensing is still not the best choice.

[0005] In summary, the development of a track passivation device for stainless steel cabinet door panels before foaming and dispensing is an urgent need of society. Utility Model Content

[0006] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a track passivation device for stainless steel cabinet door panels before foaming and gluing, so as to maximize the adhesion per unit area and eliminate the risk of door panels falling off after gluing and curing.

[0007] The technical scheme adopted by the utility model is as follows: a track passivation device for stainless steel cabinet door panels before foaming and dispensing, including a lower die and an upper die that are opposite to each other in the vertical direction, the top of the lower die is a working surface, the stainless steel door panel is placed on the working surface, the stainless steel door panel is clamped on the working surface by a clamping device and moves horizontally or vertically, and the tail handle of the upper die faces the striking head of the CNC numerical control; the structure of the upper die is: including an upper die slot for assembly, a punch is arranged below the upper die slot, a tail handle is arranged above the upper die slot, and an end face protrusion is arranged on the bottom surface of the punch; the CNC numerical control striking head faces the tail handle intermittently hammering to drive the punch to synchronously hammer the stainless steel door panel on the working surface along the vertical direction, and a concave cross-reticular pattern arranged in the form of intermittent track lines is formed in the dispensing coverage area on the stainless steel door panel.

[0008] As a further improvement of the above technical solution:

[0009] In one embodiment, the lower mold is a rotating cylindrical structure as a whole, and the structure of the lower mold is: including a lower mold slot, a cylindrical surface for fixing and guiding is arranged below the lower mold slot, and a working surface is arranged above the lower mold slot.

[0010] In one embodiment, the punch has a circular structure, and the end face protrusion arranged on the bottom end face of the punch is a circular end face grid that is circular as a whole; the circular end face grid is carved and milled into a three-dimensional groove structure with a mesh cross, and the three-dimensional groove structure forms a four-cone dot matrix with sharp points; when the punch is intermittently hammered by the CNC numerical control striking head, the three-dimensional groove structure is synchronously hammered toward the stainless steel door panel, forming a circular cross mesh pattern arranged in intermittent trajectory lines within the glue dot coverage area of ​​the stainless steel door panel.

[0011] In one embodiment, the punch has a square structure, and the end face protrusion arranged on the bottom end face of the punch is a square end face grid that is an overall square; the square end face grid is carved and milled into a mesh-like cross-shaped three-dimensional groove structure, and the three-dimensional groove structure forms a four-cone dot matrix with sharp points; when the punch is intermittently hammered by the CNC numerically controlled striking head, the three-dimensional groove structure is synchronously hammered toward the stainless steel door panel, forming a square cross-mesh pattern arranged in intermittent trajectory lines within the glue-dotting coverage area of ​​the stainless steel door panel.

[0012] In one embodiment, the mesh cross angles of the circular end surface mesh and the square end surface mesh are both set to 90°.

[0013] In one embodiment, the structure of the stainless steel door panel is as follows: it includes a plate-shaped inner surface, a glue-covered area is arranged around the periphery of the inner surface, and keyhole grooves are symmetrically arranged on the inner surface; a folded edge is also arranged around the periphery of the glue-covered area.

[0014] In one of the embodiments, after being hammered by the punch of the upper die, the glue-dotting coverage area forms a concave cross-net pattern arranged with discontinuous trajectory lines inside and a glue strip covers the glue-dotting coverage area.

[0015] The beneficial effects of the utility model are as follows:

[0016] The utility model has a reasonable structure. A concave reticulated structure is formed on the surface of the stainless steel door panel by cooperating with an upper mold and a lower mold to emboss, that is, a physical method of locally thickening the panel surface. The roughness is adjusted by a program through the downward pressure stroke of the upper mold to obtain cross-reticulated indentations of different depths, so that the surface roughness of the panel can be controlled. When the liquid glue contacts the rough area before solidification, it infiltrates into the concave and convex cross grooves. After the glue is solidified, an anchoring point hidden in the concave reticulated structure at the bottom of the rubber strip can be obtained, so that the rubber strip after the entire shape is finalized has an extremely high tear resistance effect. The physical method is used to locally thicken the panel surface of the stainless steel door panel, so that work efficiency and product quality can be greatly improved, and there is no environmental risk. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a schematic diagram of the lower mold structure of the utility model.

[0019] Figure 3 It is a schematic diagram of the upper mold structure of the utility model.

[0020] Figure 4 In the first embodiment of the present utility model Figure 3 An enlarged schematic diagram of the upper mold A.

[0021] Figure 5 In the second embodiment of the present utility model Figure 3 An enlarged schematic diagram of the upper mold A.

[0022] Figure 6 This is a schematic diagram of the glue dispensing positions of the stainless steel cabinet door panel processed by the utility model.

[0023] Figure 7 This is a schematic diagram of the process flow in Example 1 of the utility model.

[0024] Figure 8 This is a schematic diagram of the process flow in the second embodiment of the present utility model.

[0025] Among them: 1. Lower mold; 2. Upper mold; 3. Stainless steel door panel; 4. Rubber strip;

[0026] 101, lower die slot; 102, cylindrical surface; 103, working surface;

[0027] 201, upper die slot; 202, punch; 203, tail handle; 204, end face protrusion;

[0028] 301. Glue covering area; 302. Keyhole slot; 303. Folding edge; 304. Inner surface. DETAILED DESCRIPTION

[0029] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0030] Embodiment 1:

[0031] like Figure 1 As shown, the track passivation device for stainless steel cabinet door panels before foaming and dispensing of glue in this embodiment includes a lower die 1 and an upper die 2 that are opposite to each other in the vertical direction, the top of the lower die 1 is a working surface 103, a stainless steel door panel 3 is placed on the working surface 103, the stainless steel door panel 3 is clamped on the working surface 103 by a clamping device and moves horizontally or vertically, and the tail handle 203 of the upper die 2 is facing the striking head of the CNC numerical control;

[0032] like Figure 2 As shown, the lower die 1 is a rotating cylindrical structure as a whole, and the structure of the lower die 1 is as follows: it includes a lower die slot 101, a cylindrical surface 102 for fixing and guiding is arranged below the lower die slot 101, and a working surface 103 is arranged above the lower die slot 101;

[0033] like Figure 3 As shown, the structure of the upper die 2 is: including an upper die slot 201 for assembly, a punch 202 is arranged below the upper die slot 201, a tail handle 203 is arranged above the upper die slot 201, and an end face protrusion 204 is arranged on the bottom surface of the punch 202.

[0034] In this embodiment, the CNC-controlled striking head intermittently hammers the tail handle 203 to drive the punch 202 to synchronously hammer the stainless steel door panel 3 on the working surface 103 vertically, forming a concave cross-reticular pattern arranged in an intermittent trajectory line in the glue-dotting coverage area 301 on the stainless steel door panel 3.

[0035] like Figure 4As shown, in this embodiment, the punch 202 has a circular structure, and the end face protrusion 204 arranged on the bottom end face of the punch 202 is a circular end face grid that is circular as a whole; the circular end face grid is engraved and milled into a three-dimensional groove structure with a mesh cross, and the three-dimensional groove structure forms a four-cone dot matrix with sharp points; when the punch 202 is intermittently hammered by the CNC numerical control striking head, the three-dimensional groove structure is synchronously hammered toward the stainless steel door panel 3, and a circular cross mesh pattern arranged in an intermittent trajectory line is formed in the glue dot coverage area 301 of the stainless steel door panel 3, and the mesh cross angle of the circular end face grid is set to 90°.

[0036] like Figure 6 As shown, in this embodiment, the structure of the stainless steel door panel 3 is as follows: it includes a plate-shaped inner surface 304, a glue-covered area 301 is arranged around the outer periphery of the inner surface 304, and a keyhole groove 302 is symmetrically arranged on the inner surface 304; and a folding edge 303 is also arranged around the outer periphery of the glue-covered area 301. After being hammered by the punch 202 of the upper mold 2, the glue-covered area 301 forms a concave cross-net pattern arranged with intermittent track lines inside, and the glue-covered area 301 is covered by the cured rubber strip 4.

[0037] like Figure 7 As shown, the working method of this embodiment is as follows:

[0038] The lower die slot 101 of the lower die 1 and the upper die slot 201 of the upper die 2 provide positioning for quick assembly;

[0039] The cylindrical surface 102 of the lower die 1 and the tail handle 203 of the upper die 2 provide guidance for quick assembly;

[0040] In the working state of CNC numerical control, the stainless steel door panel 3 is clamped on a clamp that can move in both directions in the horizontal or vertical direction and is coplanar with the working surface 103 of the lower mold 1;

[0041] Under the constraints of the numerical control program, according to the pre-programmed trajectory, the CNC numerically controlled striking head intermittently hammers the tail handle 203 of the upper die 2 in the vertical direction to obtain an intermittent trajectory line covered by the glue-dispensing coverage area 301 in the stainless steel door panel 3, and the mesh pattern embossed on the trajectory line is a circular cross mesh pattern;

[0042] Under the pressure of the hammer, the circular end face protrusion 204 is embedded in the surface of the glue-dispensing covering area 301 with a controlled depth, and the mesh-crossed three-dimensional groove structure is hammered on the stainless steel door panel 3 to form a circle-center concave cross-net pattern arranged with intermittent track lines on the surface of the glue-dispensing covering area 301, and finally is completely covered by the rubber strip 4;

[0043] After the uncured liquid glue contacts the concave cross-netting arranged by the intermittent track lines, it infiltrates into the concave and convex cross-grooves, and after curing, an anchor point is obtained that is attached to the bottom of the rubber strip 4, so that the rubber strip 4 after the entire shape is finalized has an extremely high tear resistance effect.

[0044] Embodiment 2:

[0045] like Figure 5 As shown, in this embodiment, the punch 202 has a square structure, and the end face protrusion 204 arranged on the bottom end face of the punch 202 is a square end face grid that is overall square. The square end face grid is engraved and milled into a three-dimensional groove structure with a mesh cross, and the three-dimensional groove structure forms a four-cone dot matrix with sharp points; when the punch 202 is intermittently hammered by the CNC numerical control striking head, the three-dimensional groove structure is synchronously hammered toward the stainless steel door panel 3, and a square cross mesh pattern arranged in an intermittent trajectory line is formed in the glue dot coverage area 301 of the stainless steel door panel 3, and the mesh cross angles of the square end face grids are all set to 90°.

[0046] like Figure 8 As shown, the working method of this embodiment is as follows:

[0047] The lower die slot 101 of the lower die 1 and the upper die slot 201 of the upper die 2 provide positioning for quick assembly;

[0048] The cylindrical surface 102 of the lower die 1 and the tail handle 203 of the upper die 2 provide guidance for quick assembly;

[0049] In the working state of CNC numerical control, the stainless steel door panel 3 is clamped on a clamp that can move in both directions in the horizontal or vertical direction and is coplanar with the working surface 103 of the lower mold 1;

[0050] Under the constraints of the numerical control program, according to the pre-programmed trajectory, the CNC numerically controlled striking head intermittently hammers the tail handle 203 of the upper die 2 in the vertical direction to obtain an intermittent trajectory line covered by the glue-dispensing coverage area 301 in the stainless steel door panel 3, and the mesh pattern embossed on the trajectory line is a square cross mesh pattern;

[0051] Under the pressure of the striking hammer, the square end face protrusion 204 is embedded in the surface of the glue covering area 301 with a controlled depth, and the mesh-crossed three-dimensional groove structure is hammered on the stainless steel door panel 3 to form a square concave cross-net pattern arranged with discontinuous trajectory lines on the surface of the glue covering area 301, and is finally completely covered by the rubber strip 4; the uncured liquid glue contacts the concave cross-net pattern arranged with the discontinuous trajectory lines, and infiltrates into the concave and convex cross-grooves, and after curing, an anchor point is obtained that is attached to the bottom of the rubber strip 4, so that the rubber strip 4 after the entire shape is finalized has an extremely high tear resistance effect.

[0052] The utility model has a reasonable structure and is easy to operate. A concave reticulated structure is formed on the surface of a stainless steel door panel 3 by cooperating with an upper die 2 and a lower die 1 to emboss, that is, a physical method of locally thickening the panel surface is adopted, and its roughness is adjusted by a numerical control program on the downward pressing stroke of the upper die 2, so that cross-reticulated indentations of different depths can be obtained, so that the surface roughness of the panel can be controlled. When the liquid glue of the rubber strip 4 contacts the rough area before it is solidified, it infiltrates into the concave and convex cross grooves, and after solidification, an anchoring point hidden in the concave reticulated structure at the bottom of the rubber strip 4 can be obtained, so that the rubber strip 4 after the entire shape is finalized has an extremely high tear resistance effect and a physical method is used to thicken the panel surface of the stainless steel door panel 3, so that work efficiency and product quality can be greatly improved, and there is no environmental risk.

[0053] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A track passivation device for stainless steel cabinet door panels before foaming and dispensing, characterized in that: The invention comprises a lower die (1) and an upper die (2) which are opposite to each other in the vertical direction, the top of the lower die (1) is a working surface (103), a stainless steel door panel (3) is placed on the working surface (103), the stainless steel door panel (3) is clamped on the working surface (103) by a clamping device and moves horizontally or vertically, and the tail handle (203) of the upper die (2) faces the striking head of the CNC numerical control; The structure of the upper die (2) is as follows: it comprises an upper die slot (201) for assembly, a punch (202) is arranged below the upper die slot (201), a tail handle (203) is arranged above the upper die slot (201), and an end face protrusion (204) is arranged on the bottom surface of the punch (202); The CNC-controlled striking head intermittently strikes the tail handle (203) to drive the punch (202) to synchronously strike the stainless steel door panel (3) on the working surface (103) in the vertical direction, thereby forming a concave cross-net pattern arranged in the form of intermittent trajectory lines in the glue-dot-covered area (301) on the stainless steel door panel (3).

2. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 1, characterized in that: The lower die (1) is a rotating cylindrical structure as a whole, and the structure of the lower die (1) is as follows: it comprises a lower die slot (101), a cylindrical surface (102) for fixing and guiding is arranged below the lower die slot (101), and a working surface (103) is arranged above the lower die slot (101).

3. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 1, characterized in that: The punch (202) has a circular structure, and the end surface protrusion (204) arranged on the bottom end surface of the punch (202) is a circular end surface grid that is circular as a whole.

4. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 3, characterized in that: The circular end surface grid is engraved and milled into a mesh-like intersecting three-dimensional groove structure, and the three-dimensional groove structure forms a four-cone dot matrix with sharp points; when the punch (202) is intermittently hammered by the CNC numerically controlled striking head, the three-dimensional groove structure is hammered toward the stainless steel door panel (3) synchronously, forming a circular cross-net pattern arranged in an intermittent trajectory line in the glue-dotting coverage area (301) of the stainless steel door panel (3).

5. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 4, characterized in that: The punch (202) has a square structure, and the end surface protrusion (204) arranged on the bottom end surface of the punch (202) is a square end surface grid that is overall square.

6. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 5, characterized in that: The square end face grid is engraved and milled into a mesh-like intersecting three-dimensional groove structure, and the three-dimensional groove structure forms a four-cone dot matrix with sharp points; when the punch (202) is intermittently hammered by the CNC numerically controlled striking head, the three-dimensional groove structure is simultaneously hammered toward the stainless steel door panel (3), forming a square cross-net pattern arranged in an intermittent trajectory line in the glue-dotting coverage area (301) of the stainless steel door panel (3).

7. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 6, characterized in that: The mesh cross angles of the circular end face mesh and the square end face mesh are both set to 90°.

8. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 1, characterized in that: The structure of the stainless steel door plate (3) is as follows: it comprises a plate-shaped inner surface (304), a glue-dispensing covering area (301) is arranged around the outer periphery of the inner surface (304), and a keyhole groove (302) is symmetrically arranged on the inner surface (304); The periphery of the glue-dispensing covering area (301) is also provided with a folded edge (303).

9. The track passivation device for stainless steel cabinet door panels before foaming and dispensing as claimed in claim 8, characterized in that: After being hammered by the punch (202) of the upper die (2), the glue-dotting coverage area (301) forms a concave cross-net pattern arranged with intermittent track lines inside, and a glue strip (4) is covered on the glue-dotting coverage area (301).

Images