An auxiliary device for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater shell

Abstract

The present invention provides an auxiliary device for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater housing, belonging to the technical field of punching equipment, which includes a base, a lifting mechanism and a linear sliding mechanism. The lifting mechanism is arranged on the base, the linear sliding mechanism is arranged at the upper end of the lifting mechanism, a first mounting seat is slidably arranged on the linear sliding mechanism, a hollow main shaft is rotatably arranged on the first mounting seat through a shaft seat, a workpiece fixing mechanism is arranged at the front end of the main shaft, and a rotational power mechanism for providing rotational power for the main shaft is arranged on the first mounting seat; The present invention effectively solves the technical problems of difficult to guarantee the punching position caused by low workpiece positioning accuracy, and high material jamming and defective product rate caused by unsmooth demoulding of the workpiece during the stamping process.

Description

Technical Field

[0001] The present invention relates to the technical field of punching equipment, and particularly relates to an auxiliary equipment for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater housing. Background Art

[0002] As Figure 1 shown, the existing punching equipment includes a fixed seat 1, on which a vertical frame 2 is arranged; a rotating table 9 is arranged on the vertical frame 2, and a telescopic assembly 3 is arranged on the rotating table 9; the telescopic assembly 3 includes a guide rail 4 and a rotating mechanism 5, and the rotating mechanism 5 includes a servo motor 8, a rotating shaft 6, and a suction cup 7.

[0003] Action sequence: Place the workpiece on the mold 101 → Press the start switch of the electric box → The telescopic cylinder drives the rotating mechanism 5 to extend → Extend to the surface of the workpiece → The suction cup 7 starts to suck the workpiece → The punching press 102 punches → The servo motor rotates by an angle → The punching press 102 punches again, and so on, repeating N times to complete the processing of one workpiece, and each mechanism retracts in turn according to the initial position.

[0004] However, the suction cup of the above punching equipment does not have an accurate positioning when sucking the workpiece. If the suction cup cannot reach the center position of the workpiece, it will be non-concentric when the workpiece rotates, resulting in the inability to guarantee the position of the punched hole and affecting the product quality; moreover, during punching, the mechanism does not have an up-and-down lifting action, which will cause the workpiece to always rotate against the mold. In this way, the burrs formed during the punching of the workpiece will scrape against the mold, resulting in unsmooth rotation. Seriously, it will jam the material and make it unable to rotate, and then the workpiece will be scrapped, with a very high defective rate. Therefore, it is necessary to develop a new equipment for continuous punching of the toroidal surface of thin-walled circular workpieces. Summary of the Invention

[0005] In view of this, the present invention provides an auxiliary equipment for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater housing, effectively solving the technical problems of difficult guarantee of the punching position caused by low positioning accuracy of the workpiece, and high defective rate caused by unsmooth demoulding of the workpiece during the punching process.

[0006] To solve the above technical problems, the present invention provides an auxiliary equipment for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater housing, including a base, a lifting mechanism, and a linear sliding mechanism. The lifting mechanism is arranged on the base, the linear sliding mechanism is arranged at the upper end of the lifting mechanism, a first mounting seat is slidably arranged on the linear sliding mechanism, a hollow main shaft is rotatably arranged on the first mounting seat through a shaft seat, a workpiece fixing mechanism is arranged at the front end of the main shaft, and a rotational power mechanism for providing rotational power for the main shaft is arranged on the first mounting seat;

[0007] The workpiece fixing mechanism includes a support flange plate connected to the front end of the main shaft. A pressing flange plate is installed at the front end of the support flange plate. The inner end face of the air hole shaft has an edge, and the edge is pressed by the pressing flange plate on the end face of the support flange plate. A rotary joint is installed on the inner end blind hole of the air hole shaft, and the rotary joint is connected to a negative pressure source through a pipeline. A plurality of first quick connectors communicating with the inner end blind hole are installed on the circumferential surface of the air hole shaft. The outer side of the pressing flange plate is installed with a suction cup fixing plate through a first support column. The front center of the suction cup fixing plate is installed with a positioning disc through a second support column. The positioning disc is provided with a positioning groove. Each first quick connector is connected to a second quick connector through a pipeline, and all the second quick connectors are circumferentially arranged on the suction cup fixing plate. A vacuum suction cup is installed at the front end of the second quick connector.

[0008] Further, the rotation power mechanism includes a second mounting seat arranged on the first mounting seat. A power motor is arranged on the second mounting seat. A driving pulley is arranged on the output shaft of the power motor. A driven pulley is arranged on the main shaft. The driving pulley and the driven pulley are driven by a synchronous belt.

[0009] Further, the power motor is an electric motor, or a hydraulic motor, or a pneumatic motor.

[0010] Further, the lifting mechanism includes a first support frame arranged on the base. An L-shaped platform is slidably arranged vertically on the first support frame through a pair of first slide rails. A first automatic telescopic cylinder is arranged vertically at the upper end of the first support frame. The telescopic end of the first automatic telescopic cylinder is fixedly connected to the upper part of the platform. The linear sliding mechanism is arranged on the platform through an angle adjustment mechanism.

[0011] Further, the first automatic telescopic cylinder is a pneumatic telescopic cylinder, or an electric telescopic cylinder, or a hydraulic telescopic cylinder.

[0012] Further, the angle adjustment mechanism includes an upper guide seat and a lower guide seat. The upper guide seat is arranged at the bottom of the linear sliding mechanism. The lower guide seat is arranged on the platform. The upper guide seat and the lower guide seat are slidably guided and assembled through an arc-shaped track. A worm and gear pair for driving the upper guide seat to move in an arc along the arc-shaped track is installed between the upper guide seat and the lower guide seat.

[0013] Further, the linear sliding mechanism includes a second support frame disposed on the lifting mechanism. A pair of second sliding rails are provided on the second support frame. Sliders are slidably disposed on both of the pair of second sliding rails. The first mounting seat is mounted on the sliders on the pair of second sliding rails. A second automatic telescopic cylinder is horizontally disposed inside the second support frame. A push plate is provided at the telescopic end of the second automatic telescopic cylinder. The upper end of the push plate is connected to the bottom of the first mounting seat. The second support frame between the pair of second sliding rails is provided with a long slot hole.

[0014] Further, the second automatic telescopic cylinder adopts a pneumatic telescopic cylinder, an electric telescopic cylinder, or a hydraulic telescopic cylinder.

[0015] Further, a vacuum generator for providing negative pressure to the vacuum suction cup is provided on the base.

[0016] Further, a control console is further included for controlling the operation of the entire punching device.

[0017] Further, adjusting feet for adjusting the level of the base are installed at the bottom of the base.

[0018] The beneficial effects of the above technical solutions of the present invention are as follows:

[0019] 1. The present invention solves the positioning problem during the continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater housing, and ensures the accuracy of the position spacing of the punched holes.

[0020] 2. The present invention solves the problems that during the continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater housing, due to punching burrs, the rotation is not smooth, resulting in product jamming, inability to smoothly demold, and repeated punching leading to workpiece scrapping.

[0021] 3. The present invention can also punch thin-walled circular workpieces with inward flanging, realizing multi-purpose of one machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the main view schematic diagram of the structure of the present invention;

[0023] Figure 2 is the three-dimensional schematic diagram of the structure of the present invention;

[0024] Figure 3 is the sectional schematic diagram of the structure of the workpiece fixing mechanism in the present invention;

[0025] Figure 4 is the three-dimensional schematic diagram of the structure of the workpiece fixing mechanism in the present invention;

[0026] Figure 5 is the three-dimensional schematic diagram of the structure of the lifting mechanism in the present invention;

[0027] Figure 6Schematic diagram of the assembly structure of the linear sliding mechanism and the rotary power mechanism in the present invention;

[0028] Figure 7 Schematic diagram of the usage state of the present invention;

[0029] Reference numerals:

[0030] Base 100; vacuum generator 110; console 120; adjusting foot 130; lifting mechanism 200; first support frame 210; first slide rail 220; platform 230; first automatic telescopic cylinder 240; angle adjusting mechanism 250; upper guide seat 251; lower guide seat 252; arc-shaped track 253; linear sliding mechanism 300; second support frame 310; second slide rail 320; slider 330; second automatic telescopic cylinder 340; push plate 350; long slot hole 360; first mounting seat 400; shaft seat 500; main shaft 600; workpiece fixing mechanism 700; support flange 710; pressing flange 720; air hole shaft 730; edge 731; inner end blind hole 732; rotary joint 740; first quick joint 750; first support column 760; suction cup fixing plate 770; second support column 780; positioning disc 790; positioning groove 791; second quick joint 792; vacuum suction cup 793; rotary power mechanism 800; second mounting seat 810; power motor 820; driving pulley 830; driven pulley 840. Detailed implementation manners

[0031] To make 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 with reference to the accompanying Figures 1-7 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.

[0032] As Figures 1-7 shown: An auxiliary device for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater housing includes a base, a lifting mechanism and a linear sliding mechanism. The lifting mechanism is arranged on the base, the linear sliding mechanism is arranged at the upper end of the lifting mechanism, a first mounting seat is slidably arranged on the linear sliding mechanism, a hollow main shaft is rotatably arranged on the first mounting seat through a shaft seat, a workpiece fixing mechanism is arranged at the front end of the main shaft, and a rotary power mechanism for providing rotational power for the main shaft is arranged on the first mounting seat;

[0033] Specifically, as Figure 1 and Figure 2As shown, an auxiliary device for continuous punching of a thin-walled circular workpiece annular surface of an electric heater shell comprises a base 100, a lifting mechanism 200 and a linear sliding mechanism 300, wherein the lifting mechanism 200 is arranged on the base 100, the linear sliding mechanism 300 is arranged on the upper end of the lifting mechanism 200, a first mounting seat 400 is slidably arranged on the linear sliding mechanism 300, a hollow main shaft 600 is rotatably arranged on the first mounting seat 400 through a shaft seat 500, a workpiece fixing mechanism 700 is arranged at the front end of the main shaft 600, and a rotating power mechanism 800 for providing rotating power to the main shaft 600 is arranged on the first mounting seat 400;

[0034] Among them, Figure 3 and Figure 4 As shown, the workpiece fixing mechanism 700 includes a supporting flange 710 connected to the front end of the spindle 600, a clamping flange 720 is installed at the front end of the supporting flange 710, the inner end surface of the air hole shaft 730 has an edge 731 and the edge 731 is pressed against the end surface of the supporting flange 710 by the clamping flange 720, a rotating joint 740 is installed on the inner end blind hole 732 of the air hole shaft 730, the rotating joint 740 is connected to the negative pressure source through a pipeline, and a plurality of rotating joints connected to the inner end blind hole 732 are installed on the circumferential surface of the air hole shaft 730. A first quick connector 750 is connected to 732, and a suction cup fixing plate 770 is installed on the outer side of the clamping flange 720 through a first support column 760. A positioning disc 790 is installed at the front end center of the suction cup fixing plate 770 through a second support column 780. The positioning disc 790 has a positioning groove 791. Each first quick connector 750 is connected to a second quick connector 792 through a pipeline, and all second quick connectors 792 are circumferentially arranged on the suction cup fixing plate 770. A vacuum suction cup 793 is installed at the front end of the second quick connector 792.

[0035] In this embodiment, the number of the positioning grooves 791 is 3. Obviously, the number and shape of the positioning grooves 791 are further specifically designed according to the shape of the part to be processed (i.e., the thin-walled circular workpiece). In addition, the number of the vacuum suction cups 793 is also appropriately designed according to the size of the part to be processed, and can be evenly arranged in a circle on the suction cup fixing plate 770, or can be unevenly arranged in a circle, preferably evenly arranged.

[0036] According to one embodiment of the present invention, Figure 6As shown, the rotary power mechanism 800 includes a second mounting seat 810 disposed on the first mounting seat 400. A power motor 820 is disposed on the second mounting seat 810. A driving pulley 830 is disposed on the output shaft of the power motor 820. A driven pulley 840 is disposed on the main shaft 600. The driving pulley 830 and the driven pulley 840 are driven by a synchronous belt.

[0037] According to an embodiment of the present invention, the power motor 820 is an electric motor. Obviously, the power motor 820 is not limited to an electric motor and may also be of other types, such as a hydraulic motor or a pneumatic motor.

[0038] According to an embodiment of the present invention, as Figure 5 shown, the lifting mechanism 200 includes a first support frame 210 disposed on the base 100. An L-shaped platform 230 is slidably disposed vertically on the first support frame 210 through a pair of first sliding rails 220. A first automatic telescopic cylinder 240 is disposed vertically at the upper end of the first support frame 210. The telescopic end of the first automatic telescopic cylinder 240 is fixedly connected to the upper part of the platform 230. The linear sliding mechanism 300 is disposed on the platform 230 through an angle adjustment mechanism 250.

[0039] According to an embodiment of the present invention, the first automatic telescopic cylinder 240 is a pneumatic telescopic cylinder. Obviously, the first automatic telescopic cylinder 240 is not limited to a pneumatic telescopic cylinder and may also be of other types, such as an electric telescopic cylinder or a hydraulic telescopic cylinder.

[0040] According to an embodiment of the present invention, as Figure 5 shown, the angle adjustment mechanism 250 includes an upper guide seat 251 and a lower guide seat 252. The upper guide seat 251 is disposed at the bottom of the linear sliding mechanism 300. The lower guide seat 252 is disposed on the platform 230. The upper guide seat 251 and the lower guide seat 252 are slidably and guidingly assembled through an arc-shaped track 253. A worm and gear pair for driving the upper guide seat 251 to move in an arc along the arc-shaped track 253 is installed between the upper guide seat 251 and the lower guide seat 252.

[0041] In this embodiment, the arc-shaped track 253 is an adjustable tilt angle workbench commonly used in the machining field, which is prior art and will not be elaborated here. In addition, the worm and gear pair drives the upper guide seat 251 to move in an arc along the arc-shaped track 253, and its structure is also a common kinematic pair in the machining field, so it is not shown in the figure.

[0042] According to an embodiment of the present invention, as Figure 6As shown, the linear sliding mechanism 300 includes a second support frame 310 disposed on the lifting mechanism 200. A pair of second sliding rails 320 are provided on the second support frame 310. Sliders 330 are slidably disposed on each of the pair of second sliding rails 320. The first mounting seat 400 is mounted on the sliders 330 on the pair of second sliding rails 320. A second automatic telescopic cylinder 340 is horizontally disposed inside the second support frame 310. A push plate 350 is provided at the telescopic end of the second automatic telescopic cylinder 340. The upper end of the push plate 350 is connected to the bottom of the first mounting seat 400. The second support frame 310 between the pair of second sliding rails is provided with a long slot hole 360.

[0043] According to an embodiment of the present invention, the second automatic telescopic cylinder 340 is a pneumatic telescopic cylinder. Obviously, the second automatic telescopic cylinder 340 is not limited to a pneumatic telescopic cylinder and may also be of other types, such as an electric telescopic cylinder or a hydraulic telescopic cylinder.

[0044] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, a vacuum generator 110 for providing negative pressure to the vacuum suction cup 793 is provided on the base 100.

[0045] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, a control console 120 is further included for controlling the operation of the entire punching device.

[0046] According to an embodiment of the present invention, as Figure 1 and Figure 2 shown, in order to facilitate the leveling of the auxiliary device, adjusting feet 130 for adjusting the level of the base 100 are installed at the bottom of the base 100.

[0047] The working method (or working principle) of the present invention:

[0048] As Figure 7As shown in the figure, the automatic positioning fixture of the present invention is used for continuous punching of the toroidal surface of thin-walled circular workpieces and is used in conjunction with a punching machine. This auxiliary device is used to position, clamp and synchronously rotate the workpiece to be processed (thin-walled circular workpiece); specifically during operation, this auxiliary device is installed beside the punching machine. First, the height of the main shaft 600 is adjusted through the lifting mechanism 200 so that the processing height of the workpiece to be processed after being clamped by the workpiece fixing mechanism 700 meets the requirements of the punching machine; then the workpiece to be processed is installed on the workpiece fixing mechanism 700. The workpiece to be processed is precisely centered by the positioning groove 791 on the positioning disk 790, and the negative pressure generated by the vacuum suction cup 793 is used to fix the workpiece to be processed (thin-walled circular workpiece); then a punching is completed using the punching machine. After that, the lifting mechanism 200 drives the main shaft 600 to rise a set distance, the rotary power mechanism 800 drives the main shaft 600 to rotate a certain angle, and synchronously drives the workpiece to be processed to rotate a certain angle; then the lifting mechanism 200 drives the workpiece to be processed to descend back to the processing height to complete the next punching on the toroidal surface, and so on until the punching on the toroidal surface of the workpiece to be processed is completed; after the punching is completed, the vacuum suction cup 793 releases the vacuum state, and the thin-walled circular workpiece that has completed the punching is taken off, and the entire punching process ends. The present invention effectively solves the technical problems of difficult guarantee of punching positions caused by low workpiece positioning accuracy, and high material jamming and defective product rate caused by unsmooth demoulding of the workpiece during the stamping process.

[0049] 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 components or the interaction relationship between two components. 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 circumstances.

[0050] The above is the preferred implementation manner of the present invention. It should be noted that for those of ordinary skill in the technical field, without departing from the principle described in the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. An auxiliary device for continuous punching of the toroidal surface of a thin-walled circular workpiece of an electric heater housing, characterized in that: The invention comprises a base (100), a lifting mechanism (200) and a linear sliding mechanism (300), wherein the lifting mechanism (200) is arranged on the base (100), the linear sliding mechanism (300) is arranged at the upper end of the lifting mechanism (200), a first mounting seat (400) is slidably arranged on the linear sliding mechanism (300), a hollow main shaft (600) is rotatably arranged on the first mounting seat (400) through a shaft seat (500), a workpiece fixing mechanism (700) is arranged at the front end of the main shaft (600), and a rotating power mechanism (800) is arranged on the first mounting seat (400) for providing rotating power to the main shaft (600); The workpiece fixing mechanism (700) comprises a supporting flange (710) connected to the front end of the spindle (600), a clamping flange (720) is installed at the front end of the supporting flange (710), the inner end surface of the air hole shaft (730) has an edge (731) and the edge (731) is pressed against the end surface of the supporting flange (710) by the clamping flange (720), a rotating joint (740) is installed on the inner end blind hole (732) of the air hole shaft (730), the rotating joint (740) is connected to the negative pressure source through a pipeline, and a plurality of rotating joints (740) connected to the inner end blind hole (732) are installed on the circumferential surface of the air hole shaft (730). 2) a first quick connector (750) connected to each other, a suction cup fixing plate (770) is installed on the outer side of the clamping flange (720) through a first support column (760), a positioning disc (790) is installed at the front end center of the suction cup fixing plate (770) through a second support column (780), and a positioning groove (791) is provided on the positioning disc (790), each first quick connector (750) is connected to a second quick connector (792) through a pipeline, and all the second quick connectors (792) are circumferentially arranged on the suction cup fixing plate (770), and a vacuum suction cup (793) is installed at the front end of the second quick connector (792); The rotary power mechanism (800) comprises a second mounting seat (810) arranged on the first mounting seat (400), a power motor (820) is arranged on the second mounting seat (810), a driving pulley (830) is arranged on the output shaft of the power motor (820), a driven pulley (840) is arranged on the main shaft (600), and the driving pulley (830) and the driven pulley (840) are driven by a synchronous belt; The lifting mechanism (200) includes a first support frame (210) disposed on the base (100). An L-shaped platform (230) is slidably disposed vertically on the first support frame (210) through a pair of first sliding rails (220). A first automatic telescopic cylinder (240) is disposed vertically at the upper end of the first support frame (210). The telescopic end of the first automatic telescopic cylinder (240) is fixedly connected to the upper part of the platform (230). The linear sliding mechanism (300) is disposed on the platform (230) through an angle adjustment mechanism (250).

2. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater shell according to claim 1, characterized in that: The power motor (820) is an electric motor, or a hydraulic motor, or a pneumatic motor.

3. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater shell according to claim 1, characterized in that: The first automatic telescopic cylinder (240) is a pneumatic telescopic cylinder, or an electric telescopic cylinder, or a hydraulic telescopic cylinder.

4. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater housing as described in claim 1, wherein: The angle adjustment mechanism (250) includes an upper guide seat (251) and a lower guide seat (252). The upper guide seat (251) is disposed at the bottom of the linear sliding mechanism (300). The lower guide seat (252) is disposed on the platform (230). The upper guide seat (251) and the lower guide seat (252) are slidably and guidingly assembled through an arc-shaped track (253). A worm and gear pair for driving the upper guide seat (251) to move in an arc along the arc-shaped track (253) is installed between the upper guide seat (251) and the lower guide seat (252).

5. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater housing as described in any one of claims 1 to 4, characterized in that: The linear sliding mechanism (300) includes a second support frame (310) disposed on the lifting mechanism (200). A pair of second sliding rails (320) are disposed on the second support frame (310). Sliders (330) are slidably disposed on both of the pair of second sliding rails (320). The first mounting seat (400) is mounted on the sliders (330) on the pair of second sliding rails (320). A second automatic telescopic cylinder (340) is disposed horizontally inside the second support frame (310). A push plate (350) is disposed at the telescopic end of the second automatic telescopic cylinder (340). The upper end of the push plate (350) is connected to the bottom of the first mounting seat (400). The second support frame (310) between the pair of second sliding rails (320) is provided with a long slot hole (360).

6. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater housing as described in claim 5, characterized in that: The second automatic telescopic cylinder (340) is a pneumatic telescopic cylinder, or an electric telescopic cylinder, or a hydraulic telescopic cylinder.

7. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater housing as described in claim 1, characterized in that: A vacuum generator (110) for providing negative pressure for the vacuum suction cup (793) is disposed on the base (100).

8. The auxiliary equipment for continuous punching of the toroidal surface of the thin-walled circular workpiece of the electric heater shell as described in claim 1, characterized in that: It further includes a control console (120) for controlling the operation of the entire punching device.

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