Lift car wall producing and machining method capable of saving raw materials

Abstract

The invention discloses a raw material-saving elevator car wall production and processing method. The method comprises the following steps: step 1, according to the design size of an elevator car; 2, plates of standard specifications are selected, and 3, the number of car wall plates capable of being cut by a single plate and the cutting size are calculated based on the width of the plates; fourthly, the width of the car wall of each side of the car is matched with the cutting size of the plate through reasonable layout; and fifthly, numerical control cutting equipment is adopted for slitting the plate. According to the method, only six plates need to be precisely cut through numerical control cutting equipment, compared with a traditional method that seven plates need to be used for cutting the plates needed by the car wall, more raw materials are saved, the utilization rate of the raw materials is maximized, meanwhile, waste reduction is facilitated, and the production cost is reduced. The purpose that one standard plate is saved for a single elevator car is achieved, the production cost is reduced, and meanwhile the structural strength and attractiveness of the car wall are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of elevator car processing, and in particular to a production and processing method for an elevator car wall which saves raw materials. Background Art

[0002] The elevator car is the core part of the elevator, mainly used to carry passengers and goods. The car bottom frame is welded with channel steel and angle steel, and a layer of steel plate or wood is laid on it to form a complete bottom surface. Sometimes a layer of plastic floor or decorative materials is pasted on it to improve the appearance. The car wall is made of thin steel plate pressed into a wall panel, which is connected and assembled with bolts. There is a special shape of reinforcing ribs in the middle of each wall panel to enhance the strength and rigidity of the car wall;

[0003] As an important vertical transportation tool in modern buildings, elevators are vital to people's lives. With the rapid increase in elevator manufacturers and the rise in steel prices, competition in the elevator market is becoming increasingly fierce.

[0004] Reasonable layout of the elevator car wall can effectively save materials and thus save costs. Traditional car wall layout methods are mostly based on the designer's personal preferences. Different designers give different values ​​and sizes. It is rare to consider saving materials by adopting a reasonable layout method for a car.

[0005] The existing elevator car walls are formed during the production and processing process by cutting steel plates and then welding them. However, in the actual production process, the designers determine the size of the car walls based on experience, resulting in excessive waste after cutting the plates, causing a waste of raw materials and resulting in relatively high elevator costs.

[0006] Therefore, we propose a raw material-saving production and processing method for elevator car walls. Summary of the invention

[0007] The purpose of the present invention is to provide a method for producing and processing an elevator car wall which saves raw materials and solves the problems raised in the background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: a method for producing and processing a car wall of an elevator car that saves raw materials, comprising the following method steps:

[0009] Step 1: Determine the total number of car walls and the target width of a single car wall according to the design dimensions of the elevator car;

[0010] Step 2: Select standard plate with a width of 1220mm, a height of 2700mm and a thickness of 1.2mm;

[0011] Step 3: Based on the width of the plate, calculate the number of car wall panels that can be cut from a single plate and the cutting size to ensure that the cutting waste is minimized;

[0012] Step 4: Match the width of the car wall on each side with the cutting size of the plate through reasonable layout, so that the width combination of adjacent car wall plates matches the effective width of a single plate;

[0013] Step 5: Use CNC cutting equipment to cut the plate into pieces to form multiple car wall panels of target width;

[0014] Step 6: Bend the cut car wall panel to form a bending edge with a bending edge width of 12.5 mm. The final net width of the car wall panel is 330 mm.

[0015] Step 7: Assemble the processed car wall panels into the elevator car wall according to the layout plan.

[0016] As a preferred embodiment of the present invention, the design dimensions of the car are 1600mm wide and 1500mm deep, and the total number of car walls is 12, including 6 330mm wide car wall panels, 2 495mm wide car wall panels, 2 840mm wide car wall panels and 2 375mm wide car wall panels.

[0017] As a preferred embodiment of the present invention, the effective cutting width of the standard plate is 1200mm, and a single plate is cut into three 400mm wide car wall panels by equal division calculation, or adapted to 330mm, 495mm, 840mm and 375mm wide car wall panels by combined cutting.

[0018] As a preferred embodiment of the present invention, the plate is a grained stainless steel plate, and the cut portion thereof is polished after cutting to ensure the smoothness of the edge.

[0019] As a preferred embodiment of the present invention, the bending process adopts a hydraulic bending machine, and the bending deduction is 12.5 mm, ensuring that the net width of the car wall panel is 330 mm.

[0020] As a preferred embodiment of the present invention, the cutting residue is used for processing small spare parts.

[0021] As a preferred embodiment of the present invention, during the assembly process, the joints between the car wall panels are filled with sealant and subjected to rust-proof coating treatment.

[0022] As a preferred embodiment of the present invention, the CNC cutting equipment is a laser cutting equipment with an accuracy error of less than 0.5 mm.

[0023] As a preferred embodiment of the present invention, the step 2 also includes cleaning the surface of the plate and anti-scratch treatment.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] The invention aims at a car wall with a size of 1600mm in width and 1500m in depth, and uses 6 pieces of 330mm, 2 pieces of 495mm, 2 pieces of 840mm and 2 pieces of 375mm to form the car wall, so that only 6 plates need to be accurately cut by CNC cutting equipment to complete the process. Compared with the traditional method that requires 7 plates to cut the plates required for the car wall, it saves more raw materials, maximizes the utilization rate of raw materials, and is conducive to reducing the generation of waste, achieving the goal of saving 1 standard plate for a single elevator car, reducing production costs, and ensuring the structural strength and aesthetics of the car wall;

[0026] Modular cutting of the plates by high-precision laser cutting equipment is helpful to improve the cutting accuracy compared with the previous stamping cutting, which in turn helps to further improve the utilization rate of the plates. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0028] Figure 1 It is a flow chart of the present invention;

[0029] Figure 2 This is the bending dimension diagram of the present invention;

[0030] Figure 3 This is a conventional car wall layout dimension diagram of the present invention;

[0031] Figure 4 This is a reasonable car wall layout dimension diagram of the present invention. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] Example

[0034] Through actual investigation, the conventional size of textured stainless steel on the market (thickness*width*height) is: 1.2*1220*2700 (unit: mm). The width direction is basically unchanged unless it is specially customized (the price will also increase). The height direction can be changed, and the width direction 1220 remains unchanged. Then it can be split according to this size. The plate width of 1220mm minus the remaining edge is calculated as 1200mm, 1200 / 3=400, that is, one 1220mm can be used to make three 400mm wide car wall panels, which does not waste materials. According to the requirements of the car wall size, see Figure 2 , the car wall thickness is 25mm, the bending edge is 12.5mm, minus the bending deduction, the car wall width is 330mm;

[0035] For 1000kg (1600mm car width, 1500m car depth) car wall layout, see Figure 3 ,from Figure 3 It can be known that an elevator car wall is composed of 12 panels, namely 6 panels of 400mm, 2 panels of 425mm, 2 panels of 700mm, and 2 panels of 375mm. From this arrangement, we can analyze that the width of 700mm and 375mm cannot share one plate, only one plate can be used for 700mm, so two panels of 700mm need to be used, and one plate is needed for any other two panels, so 5 plates are needed, so this method needs 7 plates.

[0036] In order to further save raw materials while ensuring the strength of the car, the present invention proposes a raw material-saving elevator car wall production and processing method:

[0037] The method comprises the following steps:

[0038] Step 1: Determine the total number of car walls and the target width of a single car wall according to the design dimensions of the elevator car;

[0039] Step 2: Select standard board materials, clean the surface of the board materials and treat them to prevent scratches. The width is 1220mm, the height is 2700mm and the thickness is 1.2mm;

[0040] Step 3: Based on the width of the plate, calculate the number of car wall panels that can be cut from a single plate and the cutting size to ensure that the cutting margin is minimized and the cutting margin is used to process small parts;

[0041] Step 4: through reasonable layout, the width of the car wall on each side of the car is matched with the cutting size of the plate, so that the width combination of adjacent car wall panels matches the effective width of a single plate. The design size of the car is 1600mm wide and 1500mm deep. The total number of car walls is 12, including 6 330mm wide car wall panels, 2 495mm wide car wall panels, 2 840mm wide car wall panels and 2 375mm wide car wall panels;

[0042] Step 5: Use CNC cutting equipment to cut the plate into multiple car wall panels of target width. The plate is a grained stainless steel plate. After cutting, the cut part is polished to ensure the smoothness of the edge.

[0043] Step 6: Bend the cut car wall panel to form a bending edge with a bending edge width of 12.5mm. The final net width of the car wall panel is 330mm. The bending process uses a hydraulic bending machine.

[0044] Step 7: Assemble the processed car wall panels into the elevator car wall according to the layout plan.

[0045] It should be noted that the CNC cutting equipment is a laser cutting equipment with an accuracy error of less than 0.5 mm.

[0046] Example: For a 1000kg car (1600mm car width, 1500m car depth), the reasonable car wall layout is shown in Figure 4 ,

[0047] from Figure 4 It can be known that an elevator car wall is also surrounded by 12 car walls, namely 6 pieces of 330mm, 2 pieces of 495mm, 2 pieces of 840mm, and 2 pieces of 375mm. From this layout, we can analyze: 6 pieces of 330mm width use two plates, 2 pieces of 495mm use one plate, 2 pieces of 840mm use two plates, and 2 pieces of 375mm use one plate. Therefore, this method only uses 6 plates, which can save one plate compared with the previous conventional method.

[0048] In summary, the present invention is aimed at a car wall with a size of 1600mm in width and 1500m in depth, and uses 6 pieces of 330mm, 2 pieces of 495mm, 2 pieces of 840mm, and 2 pieces of 375mm to form the car wall, so that only 6 plates need to be accurately cut by CNC cutting equipment to complete the process. Compared with the traditional method that requires 7 plates to cut the plates required for the car wall, it saves more raw materials, maximizes the utilization rate of raw materials, and is conducive to reducing the generation of waste, achieving the goal of saving 1 standard plate for a single elevator car, reducing production costs, and ensuring the structural strength and aesthetics of the car wall;

[0049] Modular cutting of the plates by high-precision laser cutting equipment is helpful to improve the cutting accuracy compared with the previous stamping cutting, which in turn helps to further improve the utilization rate of the plates.

[0050] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0051] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for producing and processing a raw material-saving elevator car wall, characterized in that: The method comprises the following steps: Step 1: Determine the total number of car walls and the target width of a single car wall according to the design dimensions of the elevator car; Step 2: Select a standard plate with a width of 1220mm, a height of 2700mm, and a thickness of 1.2mm; Step 3: Based on the width of the plate, calculate the number of car wall panels that can be cut from a single plate and the cutting size to ensure that the cutting waste is minimized; Step 4: Match the width of the car wall on each side with the cutting size of the plate through reasonable layout, so that the width combination of adjacent car wall plates matches the effective width of a single plate; Step 5: Use CNC cutting equipment to cut the plate into pieces to form multiple car wall panels of target width; Step 6: Bend the cut car wall panel to form a bending edge with a bending edge width of 12.5 mm. The final net width of the car wall panel is 330 mm. Step 7: Assemble the processed car wall panels into the elevator car wall according to the layout plan.

2. A raw material-saving elevator car wall production and processing method according to claim 1, characterized in that: The design dimensions of the car are 1600mm wide and 1500mm deep, with a total of 12 car walls, including 6 330mm wide car wall panels, 2 495mm wide car wall panels, 2 840mm wide car wall panels and 2 375mm wide car wall panels.

3. A raw material-saving elevator car wall production and processing method according to claim 1, characterized in that: The effective cutting width of the standard plate is 1200mm. A single plate is cut into three 400mm wide car wall panels by equal division calculation, or combined cutting is used to adapt to 330mm, 495mm, 840mm and 375mm wide car wall panels.

4. The method for producing and processing a raw material-saving elevator car wall according to claim 1, characterized in that: The plate is a grained stainless steel plate, and after cutting, the cut portion thereof is polished to ensure the smoothness of the edge.

5. The method for producing and processing a raw material-saving elevator car wall according to claim 1, characterized in that: The bending process adopts a hydraulic bending machine, and the bending deduction is 12.5mm, ensuring that the net width of the car wall panel is 330mm.

6. The method for producing and processing a raw material-saving elevator car wall according to claim 1, characterized in that: The cutting residue is used for processing small parts.

7. The method for producing and processing a raw material-saving elevator car wall according to claim 1, characterized in that: During the assembly process, the joints between the car wall panels are filled with sealant and subjected to rust-proof coating treatment.

8. The method for producing and processing a raw material-saving elevator car wall according to claim 1, characterized in that: The CNC cutting equipment is a laser cutting equipment with an accuracy error of less than 0.5 mm.

9. The method for producing and processing a raw material-saving elevator car wall according to claim 1, characterized in that: The step 2 also includes cleaning the surface of the plate and anti-scratch treatment.

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