Pneumatic bending machine for plates
By designing a pneumatic bending machine with automatic heating and drying functions, the problems of low bending accuracy and long time consumption of sheet metal have been solved, realizing a highly efficient sheet metal bending process, which is suitable for office furniture production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 艾基锘办公家俱(河南)有限公司
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-10
AI Technical Summary
Existing sheet metal bending technology suffers from low bending accuracy and long processing time. In particular, the manual clamping and fastening device results in insufficient bending angle, and the production process requires multiple steps such as soaking, heating, and natural drying.
Design a pneumatic bending machine for sheet metal, featuring automatic heating and drying functions. Through a bending head, clips, cylinders, and other structures, it can automatically bend sheets of different hardness. The heating tube is used to preheat the sheet metal and then dry it, ensuring bending accuracy and efficiency.
It enables high-precision automatic bending of boards with different hardness, shortens production time, improves production efficiency, and reduces the time required for natural drying.
Smart Images
Figure CN224103139U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to plate bending technical field especially relates to a pneumatic bending machine for plate. BACKGROUND
[0002] Office furniture is the functional furniture designed for office environment, covering table, chair, screen, cabinet and other products, and the furniture is produced by processing and assembling plate, which is divided into thin plate, medium plate, thick plate, extra-thick plate, and is usually made into standard size flat rectangular building material plate, and a bending machine is needed to bend the plate during plate processing and production, and the plate is bent to a certain angle before subsequent processing, and the bending machine bends the plate to a certain angle by extrusion, and the finished product is formed after shaping.
[0003] In the prior art, the plate is bent by using a clamping and fastening device and a bending die to clamp and bend the plate, and the production is completed after waiting for a period of time, and there are some deficiencies in the above process, for example, the manual clamping and fastening device has low bending precision, which may result in insufficient bending angle, and a plurality of steps are needed before and after bending, for example, the plate needs to be soaked and heated before bending, and the plate needs to be dried and shaped after bending, and the conventional drying method is natural drying, which consumes a long time. UTILITY MODEL CONTENT
[0004] In view of the deficiencies of the prior art, the utility model provides a pneumatic bending machine for plate, which has the advantages of automatic heating and bending, automatic drying and shortened production time, and solves the problems in the background art.
[0005] The utility model provides the following technical scheme: a pneumatic bending machine for plate, including the box, one side of the box is movably installed with the door, the inside of the box is opened with the chute, two the inside of the chute is slidably installed with the bending head, the inner wall of the door and the outer surface of the bending head are shape compatible, the inside of the box is fixedly installed with the pneumatic cylinder, the tail of the pneumatic cylinder is connected with the air pipe to the outside of the box, the output shaft end of the pneumatic cylinder is fixedly connected with the fixed plate, the end surface of the fixed plate and one side of the bending head are fixedly connected with the buckle, the output shaft end of the pneumatic cylinder is fixedly connected between the lower bending head, the buckle is clamped with the pin column, the pin column and the inside of the buckle are shape compatible.
[0006] Through the above structure setting, the bending head, the buckle and the pneumatic cylinder are matched with each other, and the plate of different hardness can be bent, for soft plate bending, only the lower pneumatic cylinder is started to drive the bending head to bend, and for hard plate bending, the upper and lower pneumatic cylinders are matched with the buckle and the pin column to jointly exert tension on the bending head to realize bending.
[0007] Preferably, the inner wall of the box is arc-shaped, the end face of the bending head is arc-shaped, and the arc shape of the end face of the bending head is matched with the arc shape of the inner wall of the box.
[0008] Through the above structural arrangement, the end face of the bending device extrudes the plate, and finally makes the two surfaces of the plate respectively fit the internal arc surface of the box and the end face of the bending device, thereby realizing the bending of the plate.
[0009] Preferably, the top wall and the bottom wall inside the box are uniformly provided with heating grooves in linear array, the heating grooves are arc-shaped in overall shape, the heating grooves are fixedly installed with heating pipes A inside, the heating pipes A are connected with an external power supply, the top wall and the bottom wall inside the box are fixedly installed with temperature rising plates, and the temperature rising plates are provided with heating pipes B inside.
[0010] Through the above structural arrangement, the heating pipes A and the heating pipes B are arranged to respectively heat the plate before bending and heat the plate after bending, the heating pipes A heat and dry the upper and lower surfaces of the bent plate, and the plate is continuously heated to reduce the moisture inside the plate.
[0011] Preferably, the bottom of the bending head is fixedly installed with symmetrical slide columns, the slide columns are slidingly installed inside the slide grooves, and the slide columns are matched with the slide grooves in shape.
[0012] Through the above structural arrangement, the bending device slides inside the slide grooves through the slide columns, the moving direction of the bending device is limited, the position of the bending device is controlled by the extension and contraction of the output shaft of the cylinder, and the extrusion and bending of the plate by the bending device are controlled.
[0013] Preferably, one side of the box is provided with a semicircular groove between the slide grooves, one side of the bottom of the bending head is provided with an arc disc between the slide columns, the arc disc is matched with the semicircular groove in shape, and the output shaft of the cylinder is fixedly connected with the middle part of the arc disc.
[0014] Through the above structural arrangement, the position of the arc disc is controlled by the output shaft of the cylinder, when the output shaft of the cylinder is retracted, the bending device is driven to slide into the box synchronously, and the plate is extruded and bent.
[0015] The utility model has the following effects:
[0016] 1. The plate pneumatic bending machine, through setting bending head, buckle, cylinder and other structures realizes bending to different hardness plate, when encountering the plate made of wood with greater hardness, the single cylinder thrust and tension are insufficient to drive the bending device to bend the plate, at this time, the upper cylinder is started, the output shaft of the cylinder is extended, the position of the upper and lower buckles is vertical, the pin column is inserted into the inside of the buckle, one side of the pin column is attached to one side of the bending device, at this time, the upper and lower two cylinders are started, the output shafts are contracted together, the upper cylinder exerts tension on the bending device through the position of the pin column, the lower cylinder output shaft exerts tension by directly connecting with the bending device, the bending device is pressed and bent to the plate by the common tension of the two cylinders, and the effect of bending the plate with different hardness is achieved.
[0017] 2. The plate pneumatic bending machine, through setting heating pipe A, temperature rising plate, heating pipe B and other structures realizes softening and drying of the plate, the wood after soaking solution is placed in the inside of the box between the heating pipes B, since the temperature of the solution and the plate is normal temperature, the heating pipe B is started to uniformly heat the plate and the solution, the plate can be better bent through heating, the plate is preliminarily heated, the heating pipe A is powered, the heating pipe A heats the plate, at this time, there is still some solution in the plate, the heat transfer of the solution keeps the inside and outside temperature of the plate consistent, the moisture in the plate is uniformly dried, the shape of the plate is fixed after drying, and the effects of softening and drying of the plate are achieved. BRIEF DESCRIPTION OF DRAWINGS
[0018] Fig. 1 It is the whole structure schematic diagram of the utility model;
[0019] Fig. 2 It is the inside schematic diagram of the box structure of the utility model;
[0020] Fig. 3 It is the bending head structure explosion map of the utility model.
[0021] In the drawing: 1, box; 11, sliding groove; 12, heating groove; 13, heating pipe A; 14, temperature rising plate; 15, heating pipe B; 16, semicircular groove; 2, door; 3, bending head; 31, sliding column; 4, cylinder; 41, air pipe; 42, fixed plate; 5, buckle; 51, pin column. DETAILED DESCRIPTION
[0022] The technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.
[0023] Please refer to Figs. 1-3 , a plate pneumatic bending machine, comprising a box body 1, one side of the box body 1 is movably installed with a sealing door 2, the inside of the box body 1 is symmetrically provided with a sliding groove 11, two sliding grooves 11 are slidably installed with bending heads 3, the inner wall of the sealing door 2 and the outer surface of the bending head 3 are shape-fitting, the inside of the box body 1 is symmetrically fixedly installed with air cylinders 4, the tail of the air cylinder 4 is connected with an air pipe 41 outside the box body 1, the air pipe 41 is connected with an external air source, the output shaft end of the upper air cylinder 4 is fixedly connected with a fixed plate 42, the end face of the fixed plate 42 and one side of the bending head 3 are fixedly connected with buckles 5, and the output shaft end of the lower air cylinder 4 is fixedly connected with the bending head 3.
[0024] In actual application, the heating pipe A13 and the heating pipe B15 are arranged to heat the plate before bending and after bending respectively. In use, the plate is soaked in the solution so that the plate is fully soaked. Then the plate is placed in the box body 1 above the heating pipe B15. The plate is heated by the heating pipe B15 on the upper and lower walls to soften the plate. After the plate is softened, the air cylinder 4 is started to drive the bending head 3 to move into the box body 1 to make the softened plate deform. The plate is clamped and pressed between the bending head 3 and the inner wall of the box body 1 to make the plate completely bent. After the plate is clamped by the bending head 3 driven by the air cylinder 4 for a period of time, the position is fixed. At this time, the heating pipe A13 is started to heat and dry the upper and lower surfaces of the bent plate. The moisture in the plate is reduced by continuous heating. Since the plate is clamped and pressed between the bending head 3 and the inner wall of the box body 1, the plate is prevented from deforming during the drying process. After the internal stress of the plate is released, the bent shape is stable.
[0025] Please refer to Figs. 1-2 , the inner wall of the box body 1 is arc-shaped, the end face of the bending head 3 is arc-shaped, and the arc-shaped end face of the bending head 3 and the arc-shaped inner wall of the box body 1 are shape-fitting.
[0026] When the plate is bent, the plate is heated between the heating pipes B15, and the position of the air cylinder 4 and the bending head 3 is moved. The end face of the bending head 3 presses the plate, and finally the two surfaces of the plate are respectively fitted with the arc surface of the inside of the box body 1 and the end face of the bending head 3, realizing the bending of the plate.
[0027] The lower air cylinder 4 is started to drive the bending head 3 to move. When the plate is placed at the opening of the box body 1, the bending head 3 starts to push the middle of the plate. The plate is continuously pushed until the two surfaces of the plate are tightly fitted with the inner wall of the box body 1 and the end face of the bending head 3.
[0028] Please refer to Figs. 1-3The top wall and the bottom wall inside the box body 1 are uniformly provided with heating grooves 12 in linear array, the overall shape of the heating grooves 12 is arc-shaped, heating pipes A13 are fixedly installed inside the heating grooves 12, the heating pipes A13 are connected with an external power supply, and heating plates 14 are fixedly installed on the top wall and the bottom wall inside the box body 1.
[0029] By arranging the heating pipes B15, the plate after being soaked in the solution is preliminarily heated between the heating pipes B15, the plate is more convenient to bend when the whole plate is in a hot state, the plate is bent through extrusion between the bending head 3 and the box body 1, and the plate needs to be shaped after being bent, at this time, the heating pipes A13 are electrified, the upper and lower surfaces of the plate are uniformly heated by the heating pipes A13, the heat inside and outside the plate is uniform due to the heat transfer of the solution, the moisture inside the plate is dried by continuously heating the plate by the heating pipes A13, a drying effect is achieved, and the shape of the plate is basically fixed after being dried, at this time, the bending is completed.
[0030] Please refer to Figs. 1-3 The bottom of the bending head 3 is symmetrically fixedly installed with sliding columns 31, the sliding columns 31 are slidingly installed inside the sliding grooves 11, and the sliding columns 31 are shape-fitted with the sliding grooves 11.
[0031] The bending head 3 slides inside the sliding grooves 11 through the sliding columns 31, the moving direction of the bending head 3 is limited, one side of the bending head 3 is connected with an output shaft of the lower air cylinder 4, the position of the bending head 3 is controlled by the extension and contraction of the output shaft driven by the air cylinder 4, and the extrusion bending of the plate by the bending head 3 is controlled.
[0032] Please refer to Figs. 1-3 One side of the box body 1 is provided with a semicircular groove 16 between the sliding grooves 11, one side of the bottom of the bending head 3 is provided with an arc disc between the sliding columns 31, the arc disc is shape-fitted with the semicircular groove 16, and the output shaft of the lower air cylinder 4 is fixedly connected with the middle part of the arc disc.
[0033] The arc disc is connected with the output shaft of the lower air cylinder 4, the position of the arc disc is controlled by the output shaft of the air cylinder 4, when the output shaft driven by the air cylinder 4 is retracted, the bending head 3 is driven to slide into the box body 1 synchronously, and the plate is bent and extruded.
[0034] Please refer to Figs. 1-3 The clamping buckles 5 are clamped with pin columns 51, and the pin columns 51 are shape-fitted with the interiors of the clamping buckles 5.
[0035] When the board made of wood with greater hardness is encountered, the driving force of the single cylinder 4 is not enough to support the bending head 3 to extrude and bend the board, at this time the pin 51 is inserted into the inside of the buckle 5, one side of the pin 51 is attached to the bending head 3, at this time the two cylinders 4 are started, the bending head 3 has greater thrust to extrude and bend the board.
[0036] Working principle: when in use, the wood soaked in the solution is placed between the heating pipes B15 in the box 1, since the temperature of the solution and the board is room temperature, the heating pipes B15 are started to uniformly heat the board and the solution, through heating, the board can be better bent, after the board is preliminarily heated, the cylinder 4 is connected with the external gas source through the gas pipe 41, at this time the lower cylinder 4 is started, the cylinder 4 drives the bending head 3 to slide into the box 1 through the output shaft, the bending head 3 can only move linearly due to the restriction between the sliding column 31 and the sliding groove 11, the end face of the bending head 3 extrudes the board, the board is driven by the bending head 3 to move into the box 1, according to the thickness of the board, the contraction distance of the cylinder 4 is controlled, when the board is extruded to be attached to the arc surface inside the box 1 and the end face of the bending head 3 respectively, the contraction of the cylinder 4 is stopped, the position of the bending head 3 is fixed, the board is continuously clamped at this position, then the heating pipe A13 is powered, the heating pipe A13 heats the board, at this time there is still some solution in the board, through the heat transfer of the solution, the temperature inside and outside the board is kept consistent, the moisture in the board is uniformly dried, after the board is dried, the shape is fixed, at this time the lower cylinder 4 is started again, the bending head 3 is driven by the output shaft of the cylinder 4 to slide out of the box 1, then the board is taken out, the bending of the board is realized.
[0037] When the board made of wood with greater hardness is encountered, the thrust and pulling force of the single cylinder 4 is not enough to drive the bending head 3 to bend the board, at this time the upper cylinder 4 is started, the output shaft of the cylinder 4 is extended, the positions of the upper and lower buckles 5 are vertical, the pin 51 is inserted into the inside of the buckle 5, one side of the pin 51 is attached to one side of the bending head 3, at this time the two cylinders 4 are started, the output shafts are contracted, the upper cylinder 4 applies pulling force to the bending head 3 through the position of the pin 51, the output shaft of the lower cylinder 4 applies pulling force to the bending head 3 through direct connection, the bending head 3 is subjected to the common pulling force of the two cylinders 4 to extrude and bend the board.
Claims
1. A pneumatic bending machine for sheet material comprising a box (1), characterized in that: One side of the box (1) is movably installed with a sealing door (2), the inside of the box (1) is symmetrically provided with a sliding groove (11), two sliding grooves (11) are slidably installed with a bending head (3), the inner wall of the sealing door (2) and the outer surface of the bending head (3) are shape-fitting, the inside of the box (1) is symmetrically fixedly installed with a gas cylinder (4), the tail of the gas cylinder (4) is connected with a gas pipe (41) outside the box (1), the output shaft end of the upper gas cylinder (4) is fixedly connected with a fixed plate (42), the end face of the fixed plate (42) and one side of the bending head (3) are fixedly connected with a buckle (5), the output shaft end of the lower gas cylinder (4) is fixedly connected with the bending head (3), the buckles (5) are clamped with a pin column (51), the pin column (51) and the inside of the buckle (5) are shape-fitting.
2. A pneumatic bending machine for sheet material according to claim 1, characterized in that: The inner wall of the box (1) is arc-shaped, the end face of the bending head (3) is arc-shaped, and the arc-shaped end face of the bending head (3) and the arc-shaped inner wall of the box (1) are shape-fitting.
3. A pneumatic bending machine for sheet material according to claim 2, characterized in that: The top wall and the bottom wall inside the box (1) are linearly arrayed and uniformly provided with heating grooves (12), the heating grooves (12) are arc-shaped in whole shape, the heating grooves (12) are fixedly installed with heating pipes A (13) inside, the heating pipes A (13) are connected with an external power supply, the top wall and the bottom wall inside the box (1) are fixedly installed with temperature rising plates (14), and the temperature rising plates (14) are provided with heating pipes B (15) inside.
4. The pneumatic bending machine for sheet material according to claim 3, characterized in that: The bottom of the bending head (3) is symmetrically fixedly installed with a sliding column (31), the sliding column (31) is slidably installed inside the sliding groove (11), and the sliding column (31) and the sliding groove (11) are shape-fitting.
5. A pneumatic bending machine for sheet material according to claim 4, characterized in that: One side of the box (1) is provided with a semicircular groove (16) between the sliding grooves (11), one side of the bottom of the bending head (3) is provided with an arc disc between the sliding columns (31), the arc disc and the semicircular groove (16) are shape-fitting, and the output shaft of the lower gas cylinder (4) is fixedly connected with the middle part of the arc disc.