Plate cleaning mechanism based on stamping automation line

Abstract

The invention provides a plate cleaning mechanism based on a stamping automation line, which comprises auxiliary ejection devices for lifting a plate and a pneumatic air injection mechanism for blowing away scrap iron on the plate, and the auxiliary ejection devices are respectively arranged at left and right die trimming knife edges on the horizontal plane of a clearance hole between the trimming die knife edges on the front side; the auxiliary material ejecting devices are arranged on a left receding plane and a right receding plane which are provided with lightening holes and located between the inner molded surfaces of the lower die of the trimming die on the rear side. The pneumatic air injection mechanisms are arranged on the left lightening hole and the right lightening hole in the horizontal plane of the clearance hole between the cutting edges of the trimming die on the front side respectively. The auxiliary material ejecting devices and the pneumatic air injection mechanisms are electrically connected with a controller of the stamping automation line. By means of the scrap iron cleaning device, scrap iron on a die trimming knife edge and a plate can be well cleaned, and the problems that due to the fact that the plate and the die are inconvenient to clean, the production efficiency is reduced, dangerous work of workers is conducted, and the production cost is wasted are effectively solved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicle manufacturing, and particularly relates to a plate cleaning mechanism based on a stamping automation line. BACKGROUND

[0002] At present, most automobile enterprises use stamping automation line equipment to produce body stamping parts, and robots automatically feed the parts, and the required product parts are obtained through processes such as drawing, punching, trimming and edging, and shaping. The robot between each process will grab the plate and place it on the mold of the next process to obtain the required product parts. The die knife edge of the punching, trimming and edging process is a waste knife structure. Because of the gap between the waste knife edge and the trimming knife edge, fine iron chips are easily produced during trimming and left on the plate or the trimming knife block step. When the slider of the press drives the upper die back, the accumulated iron chips will be sucked to the surface of the mold cavity by the airflow, resulting in defects such as dirt, pitting, bulges and pits on the surface of the product. Therefore, the iron chips and dust on the surface of the plate and the knife edge need to be removed before entering the next process to ensure the surface finish and quality of the stamping parts. If the iron chips and dust on the surface of the plate are not removed in time, not only will the surface of the plate have defects, but the operator also needs to manually wipe the surface of the mold, which not only affects the production efficiency of the automation line, but also poses a certain risk to the operator's life safety. When mass production of stamping parts, if the iron chips are not cleaned in time, it may also cause scratches, scratches and even damage to the surface plating layer, and damage to the production equipment. Moreover, this problem is difficult to completely eliminate by optimizing the knife edge structure.

[0003] Therefore, how to design a plate cleaning mechanism based on a stamping automation line to better clean the die trimming knife edge and the iron chips on the plate has become a technical problem that technicians in the field need to solve. SUMMARY

[0004] The purpose of the present application is to provide a plate cleaning mechanism based on a stamping automation line to solve the above technical problems in the prior art.

[0005] To achieve the above purpose, the present application provides the following technical solutions:

[0006] A plate cleaning mechanism based on a stamping automation line, which comprises auxiliary ejection devices for lifting plates, pneumatic jet mechanisms for blowing off iron filings on the plates, and the auxiliary ejection devices are respectively arranged at left and right die trimming cutter edges on the hole-avoiding horizontal plane between the front side die trimming cutter edges, and the auxiliary ejection devices are respectively arranged on two hole-avoiding planes with weight-reducing holes between the inner profile surfaces of the rear side die trimming lower dies; the pneumatic jet mechanisms are respectively arranged at the left and right weight-reducing holes on the hole-avoiding horizontal plane between the front side die trimming cutter edges; and each of the auxiliary ejection devices and each of the pneumatic jet mechanisms is electrically connected with a controller of the stamping automation line.

[0007] Preferably, the auxiliary ejection device comprises a lifting cylinder, a lifting plate and a mounting bracket, the mounting bracket is used for being connected with the die trimming cutter, the lifting cylinder is vertically arranged on the mounting bracket, and the lifting plate is horizontally arranged on the upper end of a cylinder push rod of the lifting cylinder.

[0008] Preferably, a rubber suction cup is arranged on the top surface of the lifting plate.

[0009] Preferably, the mounting bracket is a Chinese character-shaped bracket, the lifting cylinder is arranged in the Chinese character-shaped bracket, and the cylinder push rod of the lifting cylinder is connected with the lifting plate after penetrating through the top plate of the Chinese character-shaped bracket.

[0010] Preferably, the pneumatic jet mechanism comprises a mounting seat, a driving cylinder and a pneumatic spray gun, the mounting seat is used for being connected with the die trimming cutter, the driving cylinder is vertically arranged on the mounting seat, and the pneumatic spray gun is downwardly and obliquely arranged on the upper end of a cylinder push rod of the driving cylinder.

[0011] Preferably, the pneumatic jet mechanism further comprises a mounting plate, a left segment of the mounting plate is upwardly bent, a right segment of the mounting plate is vertically connected with the upper end of the cylinder push rod of the driving cylinder, and the pneumatic spray gun is arranged on the left segment of the mounting plate.

[0012] Preferably, the pneumatic jet mechanism further comprises two limiting rods, the two limiting rods are oppositely arranged on the right side of the top surface of the driving cylinder, the right segment of the mounting plate oppositely has two through holes, and the two through holes and the two limiting rods are one-to-one slidingly matched.

[0013] Preferably, the right segment of the mounting plate and the cylinder push rod of the driving cylinder are detachably connected.

[0014] The present application has the following beneficial effects:

[0015] The plate cleaning mechanism based on the stamping automation line of the present application realizes automatic lifting of the plate by the auxiliary ejection device, blows away the iron filings by the pneumatic air jet mechanism, and then controls the auxiliary ejection device to drive the plate to fall down, so that the cutting edge of the die and the iron filings on the plate can be cleaned well, and the problems of reduced production efficiency, dangerous operation of the staff and waste of production cost caused by inconvenient cleaning of the plate and the die can be avoided effectively. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced, and the specific embodiments of the present application will be further described in detail with reference to the drawings.

[0017] Fig. 1 The schematic diagram of the plate cleaning mechanism based on the stamping automation line of the present application in use is shown in the figure.

[0018] Fig. 2 The schematic diagram of the auxiliary ejection device of the present application is shown in the figure.

[0019] Fig. 3 The schematic diagram of the pneumatic air jet mechanism of the present application is shown in the figure.

[0020] Markings in the drawings:

[0021] 11, auxiliary ejection device, 12, mounting bracket, 13, lifting cylinder, 14, lifting plate,

[0022] 15, rubber suction cup, 16, gas path quick-change joint; 21, pneumatic air jet mechanism,

[0023] 22, mounting seat, 23, driving cylinder, 24, pneumatic spray gun, 25, mounting plate,

[0024] 26, limiting rod; 31, weight-reducing hole. DETAILED DESCRIPTION

[0025] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. Note that the relative arrangement, numerical expressions, and numerical values of the components and steps set forth in these embodiments are not limiting to the scope of the present application unless otherwise specifically stated.

[0026] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way limiting to the scope of the present application and its applications or uses.

[0027] Techniques, methods, and apparatus known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered within the scope of the disclosure where appropriate.

[0028] In all of the examples shown and discussed herein, any specific values should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0029] As Figs. 1 to 3 shown, the plate cleaning mechanism based on the stamping automation line provided by the embodiment of the present application comprises an auxiliary ejection device 11 for lifting the plate, and a pneumatic jet mechanism 21 for blowing off the iron filings on the plate. The auxiliary ejection device is arranged at the left and right die trimming cutter edges on the horizontal plane of the clearance hole between the front side trimming die cutter edges. The auxiliary ejection device 11 is arranged on the two left and right clearance planes with weight reduction holes between the lower die inner surfaces of the rear side trimming die. The pneumatic jet mechanism 21 is arranged at the two left and right weight reduction holes 31 on the horizontal plane of the clearance hole between the front side trimming die cutter edges. Each auxiliary ejection device and each pneumatic jet mechanism is electrically connected with the controller of the stamping automation line.

[0030] The plate cleaning mechanism based on the stamping automation line provided by the embodiment of the present application is arranged with multiple pneumatic jet mechanisms and auxiliary ejection devices 11 at the clearance positions in the trimming die inner cavity. The controller of the stamping automation line is used for control, so as to realize the automatic ejection of the plate by each auxiliary ejection device, the blowing off of the iron filings by the pneumatic jet mechanism, and the falling of the plate by the controller controlling the auxiliary ejection device. It can be seen that the present application can better realize the cleaning of the die trimming cutter edges and the iron filings on the plate, and effectively avoid the problems of reduced production efficiency, dangerous operation of the staff, and waste of production cost caused by the inconvenience of cleaning the plate and the die.

[0031] Further, the auxiliary ejection device 11 comprises an ejection cylinder 13, an ejection plate 14, and a mounting bracket 12. The mounting bracket 12 is used for being connected with the trimming die. The ejection cylinder is vertically arranged on the mounting bracket. The ejection plate is horizontally arranged on the upper end of the cylinder push rod of the ejection cylinder. By using the ejection cylinder to drive the ejection plate to lift and lower, the height of the plate can be adjusted.

[0032] Specifically, the top surface of the ejection plate 14 is provided with a rubber suction cup 15, so that the rubber suction cup is in contact with the plate, and the plate can be better prevented from being damaged.

[0033] Preferably, the mounting bracket 12 is a U-shaped bracket, the jacking cylinder is arranged in the U-shaped bracket, and the cylinder push rod of the jacking cylinder is connected to the jacking plate after passing through the top plate of the U-shaped bracket. Specifically, the left and right side plates of the U-shaped bracket are each provided with a mounting hole for bolt connection with the trimming die.

[0034] Further, the pneumatic air blowing mechanism 21 comprises a mounting seat 22, a driving cylinder 23 and a pneumatic air gun 24. The mounting seat is arranged to be connected to the trimming die, the driving cylinder is arranged vertically on the mounting seat, and the pneumatic air gun 24 is arranged obliquely downward on the upper end of the cylinder push rod of the driving cylinder. With this arrangement, the height of the pneumatic air gun can be adjusted conveniently by driving the driving cylinder to lift the pneumatic air gun, so that the pneumatic air gun can blow away the iron filings on the plate and the trimming die.

[0035] Specifically, the pneumatic air blowing mechanism further comprises a mounting plate 25. The left segment of the mounting plate is bent upward, the right segment of the mounting plate is connected vertically to the upper end of the cylinder push rod of the driving cylinder, and the pneumatic air gun is arranged on the left segment of the mounting plate. With this arrangement, the pneumatic air gun is connected to the cylinder push rod of the driving cylinder through the mounting plate 25.

[0036] Preferably, the pneumatic air blowing mechanism further comprises two limiting rods 26. The two limiting rods are arranged oppositely on the right side of the top surface of the driving cylinder. The right segment of the mounting plate is provided with two through holes corresponding to the two limiting rods. The two through holes and the two limiting rods are in sliding fit, so that the cooperation of the through holes and the limiting rods can guide and limit the lifting of the mounting plate. Specifically, the upper end of the limiting rod is provided with a limiting block for blocking the right segment of the mounting plate, so as to rigidly limit the upward movement of the cylinder push rod of the driving cylinder and prevent the cylinder push rod from colliding with the plate when it is lifted upward.

[0037] It can be understood that the extension amount of the cylinder push rod of the driving cylinder and the jacking cylinder in the controller can be programmed to better meet the use requirements of jacking the plate to a certain height, and then raising the pneumatic spray gun to a set height, and using the gas blown by the pneumatic spray gun to blow off the iron filings on the plate; the jacking cylinder in the auxiliary material jacking device is used to jack the rubber suction disc to support the plate between two stamping processes to cooperate with the pneumatic jet mechanism to blow out the iron filings from the mold; the main function of the jet cylinder is to facilitate the adjustment of the height of the pneumatic spray gun, and the lowest height of the device needs to be lower than the height that can be installed when the plate is not jacked, and the stroke of the cylinder push rod needs to be smaller than that of the cylinder push rod of the auxiliary material jacking device. When blowing iron filings, the pneumatic spray gun is raised, and the height of the nozzle is greater than the height of the die knife edge, so as to blow out the iron filings from the mold cavity. The initial height of the auxiliary material jacking device is the height when the cylinder push rod of the jacking cylinder is not extended, at which time the height of the rubber suction disc is slightly lower than the die surface.

[0038] Specifically, the rear end of the pneumatic spray gun can be connected with the gas source on the production line workbench through a gas pipe. After the trimming process is completed, the controller controls the on-off of the gas of the pneumatic spray gun to spray the gas flow from the inside of the mold to the outside, so as to remove the iron filings on the mold and the knife edge; the driving cylinder and the jacking cylinder can be connected with the workbench gas source through the gas quick-change connector 16 and the gas pipe respectively, and all the gas pipes can be connected with the workbench gas source from the weight reduction hole in the mold. The gas quick-change connector can be connected with a three-position four-way valve, which is fixed on the workbench platform and is used for adjusting the cylinder gas path. By rotating the handle, the inlet and outlet of compressed air are controlled to realize the extension and retraction of the cylinder push rod. The pneumatic spray gun forms a certain angle with the horizontal plane, which can be flexibly set according to needs, as long as it can ensure good blowing effect on the iron filings in the plate and the mold.

[0039] The controller of the automatic line can be preferably a programmable logic controller, which performs logic operation and sequential control in an industrial automation environment. It is used to input the signal of the gas source supply of each cylinder and pneumatic spray gun. After debugging, it can realize the sequential control of the automatic lifting of the cylinder push rod, the work of the spray gun, and the automatic falling process of the cylinder push rod. It can also have a man-machine interface, on which the set parameters such as the stroke of the cylinder push rod extension and retraction, i.e. the height of the lifting and falling, can be input. The nozzle of the pneumatic spray gun can be aimed at the position where the iron filings are prone to exist in the die, such as the left and right die trimming knife edges on the horizontal plane of the air avoidance hole of the front trimming die knife edge, i.e. the two positions where the trimming die knife edge and the positive trimming knife edge have a gap.

[0040] Specifically, the right section of the mounting plate is detachably connected with the cylinder push rod of the driving cylinder, which can be preferably bolted.

[0041] In the automatic production of stamping parts, the robot picks up the previous sequence of plates and places them on the trimming die, the slider of the press drives the upper die to complete a punching stroke and return, at this time the workbench air source starts to supply air to the lifting cylinder, the lifting cylinder of the auxiliary material lifting device starts to work, the cylinder push rod starts to push the rubber suction cup to move vertically upward, after the rubber suction cup contacts the plate and holds it to a certain height, the workbench air source starts to supply air to the driving cylinder, so that the cylinder push rod extends to lift the nozzle of the pneumatic spray gun to a proper height above the die knife edge, and then the cylinder push rod stops extending; at this time the workbench air source starts to supply air to the pneumatic spray gun, and compressed air is sprayed from the nozzle of the pneumatic spray gun to blow the iron filings on the die knife edge and the lower surface of the plate out of the die cavity; after the iron filings are blown off, the cylinder push rod of the driving cylinder drives the pneumatic spray gun to return to the initial state, and the lifting cylinder returns, the plate falls down, the robot picks up the plate and sends it to the next sequence, and the press continues stamping production.

[0042] The present application can realize the effect of automatically blowing off the iron filings on the die trimming knife edge and the lower surface of the plate, solve the problems of dirt, pitting, convex and concave defects on the surface of the product caused by the accumulation of metal debris on the trimming knife edge during the current automatic production of automobile stamping, and the safety hazards and reduced production efficiency caused by the operator entering the automatic line to clean the iron filings. The controller of the automatic line can realize precise automatic control and interlocking, and the auxiliary material lifting device and the pneumatic spray mechanism can be automatically and quickly lifted and lowered according to the set sequence without affecting the production rhythm.

[0043] The present application installs a cylinder to lift the stamping part and uses a pneumatic spray gun to blow off the iron filings in the empty position inside the trimming die. The whole process of cleaning the iron filings on the single plate can be completed in one second on the stamping automatic line, which basically has no effect on the production rhythm of the stamping line. At the same time, the controller can accurately control the extension and retraction amount of the cylinder push rod, so that the height of the cylinder push rod can be flexibly adjusted according to different stamping parts and molds on the man-machine interface of the controller during the automatic production of automobile stamping, to adapt to the requirements of different stamping parts. When producing different products on the stamping automatic line, the lifting amount and the lowering amount of the cylinder push rod are controlled, so that the automatic cleaning of metal debris on different molds and stamping parts can be achieved by adjusting the above parameters, which has good applicability.

[0044] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A sheet cleaning mechanism based on a punching automation line, characterized by, It includes auxiliary stripping device for lifting plate, pneumatic jet mechanism for blowing off iron filings on the plate, the auxiliary stripping device is respectively arranged at the left and right die trimming cutter of the hole avoidance horizontal plane between the front side trimming die cutter, the auxiliary stripping device is arranged on the two left and right avoidance planes with weight reduction hole in the lower die inner surface of the rear side trimming die, the pneumatic jet mechanism is respectively arranged at the two weight reduction holes on the hole avoidance horizontal plane between the front side trimming die cutter, each auxiliary stripping device and each pneumatic jet mechanism are electrically connected with the controller of the stamping automation line.

2. The stamping automation line based panel cleaning mechanism of claim 1, wherein, The auxiliary stripping device includes a lifting cylinder, a lifting plate and a mounting bracket, the mounting bracket is used for being connected with the trimming die, the lifting cylinder is vertically arranged on the mounting bracket, and the lifting plate is horizontally arranged on the upper end of the cylinder push rod of the lifting cylinder.

3. The stamping automation line based panel cleaning mechanism of claim 2, wherein, A rubber suction cup is arranged on the top surface of the lifting plate.

4. The stamping automation line based panel cleaning mechanism of claim 2, wherein, The mounting bracket is a Chinese character type bracket, the lifting cylinder is arranged in the Chinese character type bracket, and the cylinder push rod of the lifting cylinder is connected with the lifting plate after penetrating through the top plate of the Chinese character type bracket.

5. The stamping automation line based panel cleaning mechanism according to any one of claims 1 to 4, characterized in that, The pneumatic jet mechanism includes a mounting seat, a driving cylinder and a pneumatic spray gun, the mounting seat is used for being connected with the trimming die, the driving cylinder is vertically arranged on the mounting seat, and the pneumatic spray gun is downwardly and obliquely arranged on the upper end of the cylinder push rod of the driving cylinder.

6. The stamping automation line based panel cleaning mechanism of claim 5, wherein, The pneumatic jet mechanism further includes a mounting plate, a left segment of the mounting plate is upwardly bent, a right segment of the mounting plate is vertically connected with the upper end of the cylinder push rod of the driving cylinder, and the pneumatic spray gun is arranged on the left segment of the mounting plate.

7. The stamping automation line based panel cleaning mechanism of claim 6, wherein, The pneumatic jet mechanism further includes two limiting rods, the two limiting rods are oppositely arranged on the right side of the top surface of the driving cylinder, the right segment of the mounting plate oppositely has two through holes, and the two through holes and the two limiting rods are one-to-one slidingly matched.

8. The stamping automation line based panel cleaning mechanism of claim 6, wherein, The right segment of the mounting plate and the cylinder push rod of the driving cylinder are detachably connected.

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