An inverting equipment for circular electric heater basin-shaped thin-wall workpieces

Abstract

The present invention provides an inwards flanging device for circular electric heater basin-shaped thin-walled workpieces, belonging to the technical field of flanging devices. The device includes a frame, on which a workpiece rotation mechanism is arranged for clamping and rotating the workpiece. A die pressing and flanging mechanism is horizontally slidably arranged on the frame located on the side of the workpiece rotation mechanism through a slide rail and guide block structure; the die pressing and flanging mechanism includes a bottom plate slidably arranged on the frame through a slide rail and guide block structure. A first automatic telescopic cylinder for pushing the bottom plate to slide is arranged on the frame. A first mounting bracket is horizontally slidably arranged on the bottom plate through a slide rail and guide block structure. A first mounting seat is arranged inside the first mounting bracket. A first connecting shaft is obliquely arranged on the first mounting seat. An outer die pressing wheel is rotatably arranged at the upper end of the first connecting shaft. The present invention adopts the inwards flanging method for flanging, which not only avoids the phenomena of cracking at the flanging part and out-of-roundness of the outer peripheral dimension caused by the traditional outwards flanging method, but also does not increase the appearance dimension of the circular electric heater basin-shaped thin-walled workpiece, and the product appearance is more coordinated and beautiful.

Description

Technical Field

[0001] The invention relates to the technical field of flanging equipment, and in particular to an inner flanging equipment for a circular electric heater basin-shaped thin-wall workpiece. Background Art

[0002] In the process of manufacturing thin-walled workpieces in the shape of a circular electric heater basin, such as the shell of an electronic heater, it is necessary to perform flanging on the edge of the thin-walled workpiece, and then punch holes on the flanging to facilitate the installation of the base plate. The traditional flanging process is as follows: place the workpiece on the internal expansion fixture - press the start button - the cylinder pulls down to tighten the internal expansion fixture - the motor rotates - the upper die pressing wheel mechanism moves forward until it approaches the workpiece surface - the lower die pressing wheel mechanism retreats to slowly pull the workpiece - the workpiece rotates under the drive of the motor and then the two die pressing wheel mechanisms interact to form an outer flanging skirt shape on the outer edge of the workpiece, thus completing the outer flanging processing of a workpiece.

[0003] However, the existing flanging equipment can only perform external flanging, which not only increases the appearance size of the circular electric heater basin-shaped thin-walled workpiece, easily leads to the outer circumference of the skirt being out of round and the overall appearance being inconsistent, but also the flanging part is easily torn, thus affecting the product quality. Therefore, it is necessary to develop a new flanging equipment for circular electric heater basin-shaped thin-walled workpieces. Summary of the invention

[0004] In view of this, the present invention provides an inner flanging device for a circular electric heater basin-shaped thin-walled workpiece, which adopts an inner flanging method for flanging, which not only avoids the flanging part cracking and outer circumferential dimension loss-of-roundness phenomena caused by the traditional outer flanging method, but also does not increase the external dimensions of the circular electric heater basin-shaped thin-walled workpiece, and the product appearance is more coordinated and beautiful.

[0005] In order to solve the above technical problems, the present invention provides a circular electric heater basin-shaped thin-wall workpiece inner flanging device, comprising a frame, the frame is provided with a workpiece rotating mechanism for clamping and rotating the workpiece, and the frame located on the side of the workpiece rotating mechanism is provided with a molded flanging mechanism for horizontal sliding through a slide rail guide block structure;

[0006] The die pressing and flanging mechanism includes a bottom plate slidably arranged on the frame through the slide rail and guide block structure. A first automatic telescopic cylinder for pushing the bottom plate to slide is arranged on the frame. A first mounting bracket is horizontally slidably arranged on the bottom plate through the slide rail and guide block structure. A first mounting seat is arranged inside the first mounting bracket. A first connecting shaft is obliquely arranged on the first mounting seat. An outer die pressing wheel is rotatably arranged at the upper end of the first connecting shaft. A second automatic telescopic cylinder for pushing the first mounting bracket to slide is arranged on the first automatic telescopic cylinder. A second mounting bracket is arranged on the bottom plate. A third automatic telescopic cylinder is vertically arranged at the top of the second mounting bracket. The free end of the third automatic telescopic cylinder is connected to the upper end of the second mounting seat. The side surface of the second mounting seat is vertically slidably arranged on the second mounting bracket through the slide rail and guide block structure. A second connecting shaft is vertically arranged at the lower part of the second mounting seat. An inner die pressing wheel cooperating with the outer die pressing wheel is rotatably arranged at the lower part of the second connecting shaft.

[0007] Furthermore, the workpiece rotating mechanism includes a rotating main shaft vertically rotatably arranged on the frame. A workpiece fixing tray adapted to the outer circumferential surface of the workpiece is installed at the upper end of the rotating main shaft. A motor for driving the lower end of the rotating main shaft to rotate is arranged on the frame. A supporting mechanism is arranged on the frame beside the workpiece fixing tray. A telescopic blank holding mechanism cooperating with the workpiece fixing tray is arranged on the supporting mechanism.

[0008] Furthermore, the telescopic blank holding mechanism includes a fourth automatic telescopic cylinder vertically arranged on the supporting mechanism. A first mounting plate is arranged at the free end of the fourth automatic telescopic cylinder. A blank holding plate is installed at the bottom of the first mounting plate.

[0009] Furthermore, a connecting plate is installed at the free end of the fourth automatic telescopic cylinder. A connecting rod with an end plate at the upper end is pressed by two pressing bars at the bottom of the connecting plate. The two pressing bars are fastened to the connecting plate by screws. The first mounting plate is installed at the lower end of the connecting rod.

[0010] Furthermore, a pair of guide rods are symmetrically and vertically arranged on the connecting plates on both sides of the free end of the fourth automatic telescopic cylinder. The upper parts of the guide rods are slidably arranged on the supporting mechanism through linear bearings.

[0011] Furthermore, the supporting mechanism includes a supporting base arranged on the frame. A supporting column is vertically arranged on the supporting base. A supporting platform is installed at the upper part of the supporting column. The telescopic blank holding mechanism is arranged on the supporting platform.

[0012] Furthermore, a second mounting plate is installed at the upper end of the rotating main shaft. The workpiece fixing tray is installed on the second mounting plate by screws.

[0013] Further, the motor is an electric motor, a pneumatic motor, or a hydraulic motor.

[0014] Further, any one of an electric telescopic cylinder, a hydraulic telescopic cylinder, and a telescopic cylinder is adopted for the first automatic telescopic cylinder, the second automatic telescopic cylinder, and the third automatic telescopic cylinder.

[0015] Further, any one of an electric telescopic cylinder, a hydraulic telescopic cylinder, and a telescopic cylinder is adopted for the fourth automatic telescopic cylinder.

[0016] Further, the inner cavity height of the workpiece fixing tray is less than the height of the circular electric heater basin-shaped thin-walled workpiece, and the inner cavity diameter of the workpiece fixing tray is greater than the outer diameter of the circular electric heater basin-shaped thin-walled workpiece.

[0017] The beneficial effects of the above technical solutions of the present invention are as follows:

[0018] 1. The present invention uses an inward flanging method to flange the circular electric heater basin-shaped thin-walled workpiece. The circular electric heater basin-shaped thin-walled workpiece is first placed in the workpiece fixing tray, and the inner bottom of the circular electric heater basin-shaped thin-walled workpiece to be processed is tightly pressed by a rotatable telescopic blank holding mechanism. Then, driven by the rotation of the workpiece rotating mechanism, inward flanging processing is carried out by using the cooperating outer die pressing wheel and inner die pressing wheel. This not only avoids the phenomena of cracking at the flanging part and out-of-roundness of the outer peripheral dimensions caused by the traditional outward flanging method, but also does not increase the appearance dimensions of the circular electric heater basin-shaped thin-walled workpiece, and the product appearance is more coordinated and beautiful.

[0019] 2. The present invention uses a workpiece fixing tray to lift the circular electric heater basin-shaped thin-walled workpiece to be processed, and uses a telescopic blank holding mechanism to rotatably press the inner bottom of the circular electric heater basin-shaped thin-walled workpiece to be processed. It not only has the advantages of convenient material taking, stable mechanism, and easy maintenance, but also avoids the problems of cumbersome manufacturing of the internal expansion fixture and high maintenance cost caused by using the internal expansion fixture to fix the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is the front view structural schematic diagram of the present invention;

[0021] Figure 2 is the three-dimensional structural schematic diagram of the present invention;

[0022] Figure 3 is the schematic diagram of the use state of the present invention;

[0023] Figure 4 is the structural schematic diagram of the circular electric heater basin-shaped thin-walled workpiece processed by using the present invention.

[0024] Reference numerals:

[0025] Frame 100; workpiece rotating mechanism 200; rotating spindle 210; workpiece fixing tray 220; motor 230; supporting mechanism 240; supporting base 241; supporting column 242; supporting platform 243; telescopic blank holding mechanism 250; fourth automatic telescopic cylinder 251; first mounting plate 252; blank holding plate 253; connecting plate 254; pressing strip 255; connecting rod 256; guiding rod 257; linear bearing 258; second mounting plate 260; die pressing and flanging mechanism 300; bottom plate 301; first automatic telescopic cylinder 302; first mounting bracket 303; first mounting seat 304; first connecting shaft 305; outer die pressing wheel 306; second automatic telescopic cylinder 307; second mounting bracket 308; third automatic telescopic cylinder 309; second mounting seat 310; second connecting shaft 311; inner die pressing wheel 312. Detailed implementation mode

[0026] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying Figures 1-4 drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention fall within the scope of protection of the present invention.

[0027] As Figures 1-3 shown: An inwards flanging device for a circular electric heater basin-shaped thin-walled workpiece, comprising a frame, on which a workpiece rotating mechanism is provided for clamping and rotating the workpiece, and a die pressing and flanging mechanism is horizontally slidably arranged on the frame on the side of the workpiece rotating mechanism through a slide rail and guide block structure;

[0028] Specifically, as Figure 1 and Figure 2 shown, an inwards flanging device for a circular electric heater basin-shaped thin-walled workpiece, comprising a frame 100, on which a workpiece rotating mechanism 200 is provided for clamping and rotating the workpiece, and a die pressing and flanging mechanism 300 is horizontally slidably arranged on the frame 100 on the side of the workpiece rotating mechanism 200 through a slide rail and guide block structure;

[0029] The die pressing and flanging mechanism 300 includes a bottom plate 301 slidably arranged on the frame 100 through the slide rail and guide block structure. A first automatic telescopic cylinder 302 for pushing the bottom plate 301 to slide is arranged on the frame 100. A first mounting bracket 303 is horizontally slidably arranged on the bottom plate 301 through the slide rail and guide block structure. A first mounting seat 304 is arranged inside the first mounting bracket 303. A first connecting shaft 305 is obliquely arranged on the first mounting seat 304. An outer die pressing wheel 306 is rotatably arranged at the upper end of the first connecting shaft 305. A second automatic telescopic cylinder 307 for pushing the first mounting bracket 303 to slide is arranged on the first automatic telescopic cylinder 302. A second mounting bracket 308 is arranged on the bottom plate 301. A third automatic telescopic cylinder 309 is vertically arranged at the top of the second mounting bracket 308. The free end of the third automatic telescopic cylinder 309 is connected to the upper end of a second mounting seat 310. The side surface of the second mounting seat 310 is vertically slidably arranged on the second mounting bracket 308 through the slide rail and guide block structure. A second connecting shaft 311 is vertically arranged at the lower part of the second mounting seat 310. An inner die pressing wheel 312 cooperating with the outer die pressing wheel 306 is rotatably arranged at the lower part of the second connecting shaft 311.

[0030] In this embodiment, the outer die pressing wheel 306 and the inner die pressing wheel 312 cooperate with each other. Specifically, they are the same as the outer die pressing wheel and the inner die pressing wheel in the prior art. An inner flanging is formed by the mutual displacement action of the outer die pressing wheel 306 and the inner die pressing wheel 312.

[0031] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, the workpiece rotating mechanism 200 includes a rotating main shaft 210 vertically rotatably arranged on the frame 100. A workpiece fixing tray 220 adapted to the outer circumferential surface of the workpiece is installed at the upper end of the rotating main shaft 210. A motor 230 for driving the lower end of the rotating main shaft 210 to rotate is arranged on the frame 100. A support mechanism 240 is arranged on the frame 100 and beside the workpiece fixing tray 220. A telescopic blank holding mechanism 250 cooperating with the workpiece fixing tray 220 is arranged on the support mechanism 240.

[0032] In this embodiment, after the workpiece rotating mechanism 200 adopts the above structure, the circular electric heater basin-shaped thin-walled workpiece to be processed is placed in the workpiece fixing tray 220, and the workpiece is clamped by using the telescopic blank holding mechanism 250. Then, the workpiece is clamped and rotated under the drive of the rotating main shaft 210.

[0033] According to an embodiment of the present invention, as Figure 1 and Figure 2As shown, the telescopic material pressing mechanism 250 includes a fourth automatic telescopic cylinder 251 vertically arranged on the support mechanism 240. A first mounting plate 252 is arranged at the free end of the fourth automatic telescopic cylinder 251, and a material pressing plate 253 is mounted at the bottom of the first mounting plate 252.

[0034] In this embodiment, after the telescopic material pressing mechanism 250 adopts the above structure, on the one hand, it can drive the material pressing plate 253 to press the circular electric heater basin-shaped thin-walled workpiece by the telescopic movement of the fourth automatic telescopic cylinder 251. On the other hand, it can realize the disassembly and replacement of the material pressing plate 253 by using the detachable assembly structure between the material pressing plate 253 and the first mounting plate 252.

[0035] According to an embodiment of the present invention, as Figure 1 and Figure 2 As shown, in order to facilitate the replacement of the first mounting plate, a connecting plate 254 is mounted at the free end of the fourth automatic telescopic cylinder 251. A connecting rod 256 with an end plate at the upper end is pressed by two pressing bars 255 at the bottom of the connecting plate 254. The two pressing bars 255 are fastened to the connecting plate 254 by screws, and the first mounting plate 252 is mounted at the lower end of the connecting rod 256.

[0036] According to an embodiment of the present invention, as Figure 1 and Figure 2 As shown, in order to ensure that the fourth automatic telescopic cylinder 251 drives the material pressing plate 253 to press down without deviation, a pair of guide rods 257 are symmetrically and vertically arranged on the connecting plates 254 on both sides of the free end of the fourth automatic telescopic cylinder 251. The upper part of the guide rods 257 is slidably arranged on the support mechanism 240 through linear bearings 258.

[0037] According to an embodiment of the present invention, as Figure 2 As shown, the support mechanism 240 includes a support base 241 arranged on the frame 100. A support column 242 is vertically arranged on the support base 241, and a support platform 243 is mounted on the upper part of the support column 242. The telescopic material pressing mechanism 250 is arranged on the support platform 243. In this embodiment, after the support mechanism 240 adopts the above structure, the entire support mechanism 240 is mounted on the frame through the support base 241, and the support platform 243 is held tightly on the support column 242 by a hoop structure, so as to facilitate the arrangement of the telescopic material pressing mechanism 250 on the support platform 243.

[0038] According to an embodiment of the present invention, as Figure 1 and Figure 2As shown, in order to facilitate the replacement of the workpiece fixing tray 220 to adapt to circular electric heater basin-shaped thin-walled workpieces of different specifications, a second mounting plate 260 is installed at the upper end of the rotating main shaft 210, and the workpiece fixing tray 220 is installed on the second mounting plate 260 by screws.

[0039] According to an embodiment of the present invention, the motor 230 is an electric motor. In this embodiment, the motor 230 is an electric motor. Obviously, the motor 230 is not limited to an electric motor and can also be of other types, such as a pneumatic motor or a hydraulic motor.

[0040] According to an embodiment of the present invention, the first automatic telescopic cylinder 302, the second automatic telescopic cylinder 307, and the third automatic telescopic cylinder 309 are electric telescopic cylinders. In this embodiment, the first automatic telescopic cylinder 302, the second automatic telescopic cylinder 307, and the third automatic telescopic cylinder 309 are electric telescopic cylinders. Obviously, they are not limited to electric telescopic cylinders and can also be of other types, such as any one of hydraulic telescopic cylinders and automatic telescopic cylinders.

[0041] According to an embodiment of the present invention, the fourth automatic telescopic cylinder 251 is an electric telescopic cylinder. In this embodiment, the fourth automatic telescopic cylinder 251 is an electric telescopic cylinder. Obviously, the fourth automatic telescopic cylinder 251 is not limited to an electric telescopic cylinder and can also be of other types, such as a hydraulic telescopic cylinder or an automatic telescopic cylinder.

[0042] According to an embodiment of the present invention, the inner cavity height of the workpiece fixing tray 220 is less than the height of the circular electric heater basin-shaped thin-walled workpiece, and the inner cavity diameter of the workpiece fixing tray 220 is greater than the outer diameter of the circular electric heater basin-shaped thin-walled workpiece. In this embodiment, the inner cavity height of the workpiece fixing tray 220 is less than the height of the circular electric heater basin-shaped thin-walled workpiece, which can not only provide sufficient support strength for the circular electric heater basin-shaped thin-walled workpiece but also prevent the circular electric heater basin-shaped thin-walled workpiece from expanding and deforming during the molding process by the outer mold pressing wheel. At the same time, the inner cavity diameter of the workpiece fixing tray 220 is greater than the outer diameter of the circular electric heater basin-shaped thin-walled workpiece, which can ensure non-interference with the inner flanging and facilitate pressing and material taking.

[0043] The working method (or working principle) of the present invention:

[0044] As Figure 3As shown, when flanging, first place the circular electric heater basin-shaped thin-walled workpiece in the workpiece fixing tray 220, and start the fourth automatic telescopic cylinder 251 to drive the pressure plate 253 to press down on the inner bottom of the circular electric heater basin-shaped thin-walled workpiece; then, the inner die pressing wheel 312 moves downward to a specified position driven by the third automatic telescopic cylinder 309; then the first automatic telescopic cylinder 302 retracts outward to drive the inner die pressing wheel 312 to move to the inner wall of the circular electric heater basin-shaped thin-walled workpiece; then, the outer die pressing wheel 306 moves horizontally to the outer surface of the circular electric heater basin-shaped thin-walled workpiece driven by the second automatic telescopic cylinder 307; then, the motor 230 drives the workpiece fixing tray 220 on the upper part of the rotating main shaft 210 to rotate, thereby driving the circular electric heater basin-shaped thin-walled workpiece to rotate. The rapidly rotating circular electric heater basin-shaped thin-walled workpiece slowly deforms under the slow push of the outer die pressing wheel 306 until a horizontal inner flange is formed to adhere to the upper surface of the inner die pressing wheel 312; after the circumferential inner flanging is completed, each mechanism retracts to the initial position in sequence according to the initial movement to perform material taking, and the inner flanging process ends. The circular electric heater basin-shaped thin-walled workpiece after inner flanging is as Figure 4 shown.

[0045] In the present invention, unless otherwise clearly specified and limited, for example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. Unless otherwise clearly limited, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0046] The above is the preferred embodiment of the present invention. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle described in the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An in-turning edge device for a circular electric heating stove basin-shaped thin-walled workpiece, characterized in that: It includes a frame (100), and a workpiece rotating mechanism (200) is arranged on the frame (100) for clamping and rotating the workpiece. A die pressing and flanging mechanism (300) is horizontally slidably arranged on the frame (100) on the side of the workpiece rotating mechanism (200) through a slide rail and guide block structure; The die pressing and flanging mechanism (300) includes a bottom plate (301) slidably arranged on the frame (100) through the slide rail and guide block structure. A first automatic telescopic cylinder (302) for pushing the bottom plate (301) to slide is arranged on the frame (100). A first mounting bracket (303) is horizontally slidably arranged on the bottom plate (301) through the slide rail and guide block structure. A first mounting seat (304) is arranged inside the first mounting bracket (303). A first connecting shaft (305) is inclinedly arranged on the first mounting seat (304). An outer die pressing wheel (306) is rotatably arranged at the upper end of the first connecting shaft (305). A second automatic telescopic cylinder (307) for pushing the first mounting bracket (303) to slide is arranged on the first automatic telescopic cylinder (302). A second mounting bracket (308) is arranged on the bottom plate (301). A third automatic telescopic cylinder (309) is vertically arranged at the top of the second mounting bracket (308). The free end of the third automatic telescopic cylinder (309) is connected to the upper end of a second mounting seat (310). The side of the second mounting seat (310) is vertically slidably arranged on the second mounting bracket (308) through the slide rail and guide block structure. A second connecting shaft (311) is vertically arranged at the lower part of the second mounting seat (310). An inner die pressing wheel (312) cooperating with the outer die pressing wheel (306) is rotatably arranged at the lower part of the second connecting shaft (311); The workpiece rotating mechanism (200) includes a rotating main shaft (210) vertically rotatably arranged on the frame (100). A workpiece fixing tray (220) adapted to the outer circumferential surface of the workpiece is installed at the upper end of the rotating main shaft (210). A motor (230) for driving the lower end of the rotating main shaft (210) to rotate is arranged on the frame (100). A support mechanism (240) is arranged on the frame (100) and beside the workpiece fixing tray (220). A telescopic blank holding mechanism (250) cooperating with the workpiece fixing tray (220) is arranged on the support mechanism (240); The first automatic telescopic cylinder (302), the second automatic telescopic cylinder (307) and the third automatic telescopic cylinder (309) adopt any one of an electric telescopic cylinder and a hydraulic telescopic cylinder.

2. The inside flanging device for the circular electric heater basin-shaped thin-walled workpiece according to claim 1, characterized in that: The telescopic blank holding mechanism (250) includes a fourth automatic telescopic cylinder (251) vertically arranged on the support mechanism (240). A first mounting disc (252) is arranged at the free end of the fourth automatic telescopic cylinder (251). A blank holding plate (253) is installed at the bottom of the first mounting disc (252).

3. The circular electric heater basin-shaped thin-walled workpiece inner flanging device according to claim 2, characterized in that: A connecting plate (254) is installed at the free end of the fourth automatic telescopic cylinder (251). A connecting rod (256) with an end plate at the upper end is pressed by two pressure bars (255) at the bottom of the connecting plate (254). The two pressure bars (255) are fastened to the connecting plate (254) by screws. The first mounting disc (252) is installed at the lower end of the connecting rod (256).

4. The circular electric heater basin-shaped thin-walled workpiece inner flanging device according to claim 3, characterized in that: A pair of guide rods (257) are symmetrically and vertically arranged on the connecting plate (254) on both sides of the free end of the fourth automatic telescopic cylinder (251). The upper part of the guide rod (257) is slidably arranged on the support mechanism (240) through a linear bearing (258).

5. The flanging equipment for the circular electric heater basin-shaped thin-walled workpiece as described in claim 1, characterized in that: The support mechanism (240) includes a support base (241) arranged on the frame (100). A support column (242) is vertically arranged on the support base (241). A support platform (243) is installed at the upper part of the support column (242). The telescopic material pressing mechanism (250) is arranged on the support platform (243).

6. The flanging equipment for the circular electric heater basin-shaped thin-walled workpiece according to claim 1, characterized in that: A second mounting disc (260) is installed at the upper end of the rotating main shaft (210). The workpiece fixing tray (220) is installed on the second mounting disc (260) by screws.

7. The inside flanging device for the circular electric heater basin-shaped thin-walled workpiece according to claim 1, characterized in that: The motor (230) is an electric motor, or a pneumatic motor, or a hydraulic motor.

8. The inside flanging device for the circular electric heater basin-shaped thin-walled workpiece according to claim 2, wherein: The fourth automatic telescopic cylinder (251) is either an electric telescopic cylinder or a hydraulic telescopic cylinder.

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