Door frame production process

Abstract

The invention discloses a door frame production process, comprising: S1: unwinding a material and leveling it once; S2: punching a process hole on the unwinding material online and leveling it twice; S3: bending and shaping the punched material online to form a door frame profile semi-finished product; S4: cutting and segmenting the formed semi-finished product online; S5: cutting the two ends of the segmented semi-finished product according to a splicing angle; S6: splicing the cut semi-finished product into a door frame, and then fixing and connecting two adjacent splicing parts to form; after leveling, punching, opening holes and notching are first performed on the material in a plane state, and then the material is roll-formed by a door frame forming machine, which reduces the requirements for processing holes and shear surfaces, is suitable for the production of door frames of various shapes, reduces the door frame process production process, and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of door frame production, and in particular to a door frame production process. Background Art

[0002] Door frames are common in daily life. There are many types of door frames on the market. However, the current door frame production process is chaotic, including frame assembly → hot pressing → trimming → milling door core board → milling door plutonium line → veneer → door closing → punching lock and hinge holes → trial installation → spraying. The process route is long and the quality is generally not high. Application No. 201310352415.0 discloses a door frame forming process, which is to roll a metal plate that meets the specifications to form a semi-finished workpiece with a folding structure. Other holes to be opened on the semi-finished workpiece are on the same stamping cutting surface as the surface to be sheared; the obtained semi-finished workpiece is placed in a special punching die, a hole opening die, and a punching die, and the hole opening die, the punching die and the punching die are matched and installed on the same combined punching machine; the semi-finished workpiece is synchronously punched by the punching die, the hole opening die and the punching die. The method comprises the following steps: cutting angles, punching holes and punching notches; using a bending machine to bend and shape the single-piece frame; welding the upper frame and two side frames respectively made according to the above steps at diagonal positions to make an integral door frame. This door frame production method requires that the holes to be opened and the surfaces to be sheared of the door frame profile are on the same stamping and cutting surface, and has special requirements on the cross-sectional shape of the door frame. This process production step is not conducive to the production of door frames whose holes to be opened and the surfaces to be sheared are not on the same plane, and cannot adapt to the production of door frames of different shapes. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned technical problems and to provide a door frame production process, which does not require preliminary forming and directly punches the plate, thereby reducing the requirements for processing holes and shear surfaces, is suitable for the production of door frames of various shapes, reduces the door frame process production process, and improves production efficiency.

[0004] In order to achieve the above object, the present invention adopts the following technical solution: a door frame production process, comprising:

[0005] S1: Unwind the material and level it once;

[0006] S2: After uncoiling, the material undergoes process hole punching and secondary flattening online;

[0007] S3: The blanked material is bent and formed online to form a semi-finished door frame profile;

[0008] S4: The semi-finished products are cut and segmented online after forming;

[0009] S5: The two ends of the segmented semi-finished product are cut according to the splicing angle;

[0010] S6: The cut semi-finished products are assembled into a door frame, and then two adjacent joints are fixedly connected to form a door frame.

[0011] In order to realize the punching continuously online, a further preferred technical solution is that in the step S2, the punching die, the cutting length and the punching spacing are automatically matched according to the preset program, which at least includes:

[0012] S21: punching process reserved hole; S22: punching hinge hole; S23: punching left and right lock holes; S24: punching lock piece fixing hole; S25: punching installation hole; S26: punching cut notch.

[0013] In order to realize the online continuous molding of the material, a further preferred technical solution is that the step S3 at least includes:

[0014] S31: bend one side of the material upward 89 degrees to form a first bending portion through a group of continuous forming roller dies, and bend the other side of the material downward 89 degrees to form a second bending portion, and the middle part forms the first side long side; S32: bend the first bending portion downward 180 degrees through a group of continuous forming roller dies, and bend the second bending portion upward 180 degrees; S33: bend the first bending portion toward the second bending portion 89 degrees to be parallel to the first side long side and form a first side short side through a group of continuous forming roller dies, and bend the second bending portion toward the first bending portion 89 degrees to be parallel to the first side long side and form a second side short side; then, cross-lock the first bending portion and the second bending portion through a group of continuous forming roller dies to form the second side long side.

[0015] In order to realize online continuous molding of the material to form the end face required for the profile, a further preferred technical solution is that the cross-section of the semi-finished product after the material is molded in the S3 step includes a quadrilateral cavity, and a first extension portion extending outward along a short side of the quadrilateral cavity and formed by two layers of material superimposed, and a second extension portion extending outward along the other short side of the quadrilateral cavity and formed by two layers of material superimposed, the end of the second extension portion also has a bending portion extending in the long side direction, the second side short side is bent into a U shape, the first side short side is bent into a reverse S shape, and a closed structure is formed by cross-locking and pressing at a long side of the quadrilateral cavity.

[0016] Since the forming process and the punching process have different online speeds, in order to achieve automatic continuous production, a further preferred technical solution is that between step S2 and step S3, the material goes downward into the pit, passes through a pair of transmission rollers and leaves the pit upward.

[0017] In order to achieve smooth unwinding operation and ensure the material flatness requirement of punching, a further preferred technical solution is that a single-head vertical unwinding machine is used in the step S1, and the unwinding is leveled once by at least two pairs of rollers.

[0018] In order to achieve smooth unwinding operation and ensure the flatness of the material after punching, a further preferred technical solution is that in the step S2, the combined punching machine is entered to punch process holes continuously online, and then flattened twice by at least two pairs of rollers.

[0019] In order to ensure smooth forming operation and quality after forming, a further preferred technical solution is that in the step S3, the maximum rolling thickness is 1.2 mm, the feed expansion is less than 371 mm, and the rolling speed is 0-8 m per minute.

[0020] In order to facilitate the splicing of the door frame and to have a suitable splicing angle, a further preferred technical solution is that in the step S5, the semi-finished product is placed on a workbench and a beveling machine is used to bevel the two ends of the door frame at 45°.

[0021] In order to ensure the welding quality of the door frame and improve the welding efficiency, a further preferred technical solution is that the step S6 at least includes:

[0022] S61: placing the semi-finished product on the workbench, adjusting the position of the clamp slider according to the position of the positioning hole on the workbench to position the inner side of the spliced ​​semi-finished product; S62: adjusting the position of the clamping cylinder according to the position of the positioning hole on the workbench to clamp the outer side of the spliced ​​semi-finished product and the splicing part of the semi-finished product; S63: welding with a laser welder.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows: after leveling, the material is first punched, pierced and notched in a flat state, and then roll-formed by a door frame forming machine, which reduces the requirements for processing hole positions and shear surfaces, is suitable for the production of door frames of various shapes, reduces the door frame process production flow, and improves production efficiency; facilitates the continuous arrangement of uncoiling, combined punching, material transition brackets, door frame forming and cutting segments, and facilitates the realization of an on-site unmanned door frame online punching and forming automated production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a process flow chart of the present invention;

[0025] Figure 2 It is a cross-sectional view of the molded door frame of the present invention. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Example

[0027] like Figure 1As shown, a door frame production process includes S1: unrolling and leveling the material at one time;

[0028] S2: After uncoiling, the material undergoes process hole punching and secondary flattening online;

[0029] S3: The blanked material is bent and formed online to form a semi-finished door frame profile;

[0030] S4: The semi-finished products are cut and segmented online after forming;

[0031] S5: The two ends of the segmented semi-finished product are cut according to the splicing angle;

[0032] S6: The cut semi-finished products are assembled into a door frame, and then two adjacent joints are fixedly connected to form a door frame.

[0033] Specifically, install the galvanized sheet coil material with a steel plate thickness of 1.0-1.2mm and a steel plate width of less than 371mm in a single-head vertical uncoiler. The material weight should be less than 5 kg. Uncoil the material. A 9-pair roller leveling mechanism is provided at the output end of the single-head vertical uncoiler to level the material once.

[0034] The material that has been flattened once after unwinding enters the combined punch press through the input end of the combined punch press. The output end of the combined punch press includes a servo feeding device, which performs wall-type 9-pair roller unwinding, flattening and feeding. The gap between the upper and lower rollers is manually adjusted by a screw rod. There are supporting rollers and guide mechanisms at the input end. The feeder (servo motor) has a power of 4KW with a reducer. Multiple punching units are installed on the corresponding stations of the combined punch press. Each punching unit is equipped with a fine-tuning screw. Turning the screw can longitudinally adjust the center position of each side punching unit. Then, the punching unit is locked. The actuator of the punching mechanism is hydraulic oil Cylinder to provide punching power, the platform is equipped with a die, made of CR12MOV, quenching hardness HRC58°~62° to ensure that a single die can be used normally for no less than 100,000 times, each die has a blanking hole in the middle, and an automatic waste recovery is set under the combined punch press. The maximum input power of the main and auxiliary cylinders (single): 7.5KW, hydraulic pump, with air cooling system, working pressure is 25MPA; according to the preset program, it automatically corresponds to the punching die, cutting length and punching spacing, and the materials after secondary leveling are processed online in sequence according to the corresponding stamping units, S21: punching process reserved hole; S22: punching hinge hole; S23: punching left and right lock holes; S24: punching lock piece fixing hole; S25: punching installation hole 1, installation hole 2, installation hole 3, etc.; S26: punching cut notch 1, cut 2 and spare hole; after the punching is completed, the combined punch output end is flattened by the wall plate type 9 rollers, and the secondary leveling is fed;

[0035] Since the forming process and the punching process have different online speeds, in order to realize automatic continuous production, further, between the step S2 and the step S3, the material goes down into the pit, passes through a pair of transmission rollers and leaves the pit upward; specifically, a pit is provided on the bottom surface of the combined punch press and the door frame forming machine, and a pair of transmission rollers are provided in the pit. The material enters the pit after being discharged from the output end of the combined punch press, and then passes between the pair of transmission rollers and enters the door frame forming machine. In this way, the material from the output end of the combined punch press can be transferred through the pit, thereby compensating for the fact that the production capacity of the door frame forming machine is lower than that of the combined punch press;

[0036] The punched material enters the input end of the door frame forming machine after passing through the pit, and is bent and formed online to form a semi-finished door frame profile. The rolling die material of the door frame forming machine is: CGr15+Cr12MoV, the heat treatment hardness is HRC55-58°, and there is a set of water circulation system. The upper and lower shafts are fixed with a conjoined arch slider, and each group is driven by a five-bevel gear. The two ends of the shaft are fixed in the slider, and the gap between the upper and lower rollers can be adjusted. There is an auxiliary forming device between each roller shaft to ensure the forming process of the product. The feed expansion is less than 371mm, the maximum rolling thickness is 1.2mm, and the rolling speed is 0~8m per minute; the specific rolling forming process is S31: a set of continuous forming roller dies is used to bend one side of the material upward by 89 degrees to form the first bending part, and at the same time Bend the other side of the material downward 89 degrees to form a second bending portion, and the middle part forms the long side of the first side; S32: bend the first bending portion downward 180 degrees through a set of continuous forming roller dies, and bend the second bending portion 180 degrees upward, S33: bend the first bending portion toward the second bending portion 89 degrees through a set of continuous forming roller dies to be parallel to the long side of the first side and form the short side of the first side, and bend the second bending portion toward the first bending portion 89 degrees to be parallel to the long side of the first side and form the short side of the second side, and then cross-lock the first bending portion with the second bending portion through a set of continuous forming roller dies to form the long side of the second side, and then bend the 180-degree bending part of the first bending portion toward the long side of the first side to form a protruding bending portion, and after continuous rolling, as shown Figure 2 As shown, the cross section of the semi-finished product after the material is formed includes a quadrilateral cavity, a first extension portion extending outward along a short side of the quadrilateral cavity and formed by superimposing two layers of material, and a second extension portion extending outward along another short side of the quadrilateral cavity and formed by superimposing two layers of material, the end of the second extension portion also has a bending portion extending in the long side direction, the second side short side is bent into a U shape, the first side short side is bent into a reverse S shape, and the positive and negative cross-locking at one long side of the quadrilateral cavity is pressed into a closed structure;

[0037] The semi-finished products after forming are cut into sections online, and the hydraulic circular saw is stationary sawing. The hydraulic circular saw automatically cuts the required length and width. The semi-finished products after cutting are unpowered unloaded through the galvanized roller unloading rack;

[0038] The semi-finished products are cut at both ends according to the splicing angle after segmentation. The semi-finished products are placed on the workbench and the angles of both ends of the door frame are cut at 45° using a cutting machine.

[0039] The cut semi-finished products are assembled into door frames, and then the two adjacent joints are fixedly connected to form a shape. S61: Place the semi-finished products on the workbench, and adjust the position of the clamp slider according to the position of the positioning hole on the workbench to position the inner side of the spliced ​​semi-finished products. S62: Adjust the position of the clamping cylinder according to the position of the positioning hole on the workbench to clamp the outer side of the spliced ​​semi-finished products and the splicing of the semi-finished products; S63: Laser welding is performed; Specifically, the workbench is provided with positioning holes and adjustable clamp sliders, and fixed bases are provided on both sides and in the middle to connect with the cylinder assembly. The clamps are controlled by three joysticks respectively, so that the door frame is accurately positioned and the welding deformation is reduced. The middle cylinder assembly has a right-angle groove so that there will be no difference in position during assembly, ensuring that the outer angle is a right angle. The inner fixed slider is used as an inner angle positioning piece to ensure that the outer angle is a right angle, and welding is performed by a hand-held laser welder;

[0040] The production line adopts a PLC control system, which can manually and automatically control the coordinated movements of each component of the entire production line, receive data and issue production instructions, generate a csv file from the processing list, and transmit it to the PLC system, automatically corresponding to the punching die, cutting length and punching spacing, and manually select the processing mode: four-frame, three-frame, single frame, and rolled door frame forming.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A door frame production process, characterized in that: include: S1: Unwind the material and level it once; S2: After uncoiling, the material undergoes process hole punching and secondary flattening online; S3: the punched material is bent and formed online to form a semi-finished door frame profile; the S3 step at least includes: S31: bending one side of the material upward by 89 degrees to form a first bending portion, and bending the other side of the material downward by 89 degrees to form a second bending portion, and the middle part forms the first side long side; S32: bending the first bending portion downward by 180 degrees, and bending the second bending portion upward by 180 degrees, through a group of continuous forming roller dies; S33: bending the first bending portion to the second bending portion by 89 degrees to be parallel to the first side long side and form the first side short side, and bending the second bending portion to the first bending portion by 89 degrees to be parallel to the first side long side, and forming the first side short side. The long side of the first side is parallel to form the short side of the second side, and then the first bending portion and the second bending portion are cross-fastened through a set of continuous forming roller dies to form the long side of the second side. After continuous rolling, the semi-finished product section after the material is formed includes a quadrilateral cavity, and a first extension portion extending outward along a short side of the quadrilateral cavity and formed by superimposing two layers of material, and a second extension portion extending outward along another short side of the quadrilateral cavity and formed by superimposing two layers of material, the end of the second extension portion also has a bending portion extending in the long side direction, the short side of the second side is bent into a U shape, and the short side of the first side is bent into a reverse S shape, and the positive and negative cross-fastening at a long side of the quadrilateral cavity is pressed into a closed structure; S4: The semi-finished products are cut and segmented online after forming; S5: The two ends of the segmented semi-finished product are cut according to the splicing angle; S6: The cut semi-finished products are assembled into a door frame, and then two adjacent joints are fixedly connected to form a door frame.

2. A door frame production process as claimed in claim 1, characterized in that: In the step S2, according to the preset program, the punching die, the cutting length and the punching spacing are automatically matched, which at least includes: S21: punching process reserved hole; S22: punching hinge hole; S23: punching lock hole; S24: punching lock piece fixing hole; S25: punching installation hole; S26: punching cut notch.

3. A door frame production process as claimed in claim 1, characterized in that: Between the step S2 and the step S3, the material goes downward into the pit, passes through a pair of transmission rollers, and then leaves the pit upward.

4. A door frame production process as claimed in claim 1, characterized in that: In the step S1, a single-head vertical uncoiler is used, and the uncoiling is leveled once by at least two pairs of rollers.

5. A door frame production process as claimed in claim 1 or 2, characterized in that: In the step S2, the combined punching machine is used to continuously punch process holes online, and then the product is flattened for the second time by at least two pairs of rollers.

6. A door frame production process as claimed in claim 1 or 3, characterized in that: In the step S3, the maximum rolling thickness is 1.2 mm, the feed expansion is less than 371 mm, and the rolling speed is 0-8 m / min.

7. A door frame production process as claimed in claim 1, characterized in that: In the step S5, the semi-finished product is placed on a workbench, and a beveling machine is used to bend the two ends of the door frame at 45°.

8. A door frame production process as claimed in claim 1, characterized in that: The step S6 at least includes: S61: placing the semi-finished product on the workbench, adjusting the position of the clamp slider according to the position of the positioning hole on the workbench to position the inner side of the spliced ​​semi-finished product; S62: adjusting the position of the clamping cylinder according to the position of the positioning hole on the workbench to clamp the outer side of the spliced ​​semi-finished product and the splicing part of the semi-finished product; S63: welding with a laser welder.

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