Coating nitrogen protection device for electron beam curing

Abstract

The utility model relates to the technical field of electron beam curing, and particularly discloses an electron beam curing coating nitrogen protection device which comprises a device base, a fixing frame is fixed on the upper surface of the device base, and two driving electric cylinders are fixed on the upper surface of the fixing frame through bolts. The telescopic ends of the two driving electric cylinders penetrate through the fixing frame and are fixedly provided with nitrogen spraying mechanisms used for protecting a workpiece coating, and a conveying mechanism used for conveying nitrogen is fixed to the upper end of the fixing frame. And the nitrogen spraying mechanism comprises a nitrogen protection shell, a conveying cavity is formed in the nitrogen protection shell, a fixed strip is fixed to the inner wall of the conveying cavity, and a movable strip is connected to the upper end of the fixed strip. Through the arrangement of the nitrogen spraying mechanism, nitrogen is conveyed to the conveying cavity through the conveying pipe, the nitrogen is evenly sprayed to the surface of the workpiece along the lower end of the conveying cavity, so that the surface of the workpiece is protected, and waste of the nitrogen is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electron beam curing, in particular to a coating nitrogen protection device for electron beam curing. Background Art

[0002] Electron beam curing, or EB curing technology, is an efficient coating curing method that uses the high energy characteristics of electron beams to cure coating materials in a very short time. However, since electron beams easily react with oxygen in the air to produce ozone, this will reduce its energy and affect the curing effect. Therefore, during the EB curing process, a nitrogen protection device is usually required to isolate oxygen and ensure that the energy of the electron beam is fully utilized.

[0003] When the existing nitrogen is sprayed, the material in the environment surrounded by air will be oxidized by the oxygen in the air, and the oxygen will prevent the polymerization reaction, thereby reducing the efficiency of radiation modification;

[0004] The existing patent (publication number: CN213376562U) discloses a nitrogen protection device, which includes a shell, an electron gun assembly, a shielding assembly and a nitrogen pipeline. The electron gun assembly is installed in the shell to generate an electron flow. The nitrogen pipeline and the electron beam generating mechanism are fixedly connected. Nitrogen enters from the air inlet of the nitrogen pipeline, enters the irradiation chamber from the air outlet after being pressurized, and exhausts the air, so that there is no oxygen during irradiation, avoiding oxidation of irradiated processed materials and oxygen inhibition problems, thereby improving the efficiency of irradiation modification.

[0005] In response to the above problems, although the solutions provided by existing patents can avoid the oxidation of irradiated processed materials and oxygen inhibition problems, the flow field distribution of high-purity nitrogen is difficult to accurately control when the nitrogen is sprayed, and it cannot be sprayed evenly on the surface of the object, resulting in huge nitrogen consumption and poor practicality. Summary of the invention

[0006] The purpose of the utility model is to provide a nitrogen protection device for electron beam cured coatings, wherein nitrogen is delivered to a delivery chamber through a delivery pipe, and the nitrogen is evenly sprayed onto the surface of a workpiece along the lower end of the delivery chamber, thereby protecting the surface of the workpiece and effectively reducing the waste of nitrogen to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coating nitrogen protection device for electron beam curing, comprising a device base, a fixing frame is fixed to the upper surface of the device base, two driving electric cylinders are fixed to the upper surface of the fixing frame by bolts, the telescopic ends of the two driving electric cylinders are both penetrated by the fixing frame to fix a nitrogen spraying mechanism for coating protection of the workpiece, and a conveying mechanism for conveying nitrogen is fixed to the upper end of the fixing frame;

[0008] The nitrogen spraying mechanism comprises a nitrogen protective shell, a conveying cavity is provided inside the nitrogen protective shell, a fixing bar is fixed to the inner wall of the conveying cavity, a movable bar is connected to the upper end of the fixing bar, a movable rod penetrating the nitrogen protective shell is fixed to the right side of the movable bar, a spring abutting against the nitrogen protective shell is sleeved on the outer surface of the movable rod, and a fixing plate is fixed to the end of the movable rod.

[0009] Preferably, a mounting plate is fixed to the lower surface of the fixing plate, two damping bearings are arranged inside the mounting plate, and mounting rods fixedly connected to the mounting plate are fixed inside the two damping bearings.

[0010] Preferably, a conveyor belt is arranged inside the device base, and a driving motor is fixed to one side of the device base by bolts.

[0011] Preferably, the conveying mechanism comprises an air storage box, the air storage box is fixed to the upper end of the fixing frame, and an air pump is fixed to the upper surface of the air storage box by bolts.

[0012] Preferably, the output end of the air pump is connected to a connecting pipe, and the end of the connecting pipe is connected to an air bag fixedly connected to the air storage tank.

[0013] Preferably, the lower surface of the air storage box is connected with a delivery pipe which is interconnected with the delivery cavity.

[0014] Preferably, an outer wall of the air storage box is provided with an air charging port.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. Through the nitrogen spraying mechanism, nitrogen is delivered to the delivery chamber through the delivery pipe, and the nitrogen is evenly sprayed to the surface of the workpiece along the lower end of the delivery chamber, thereby protecting the surface of the workpiece and effectively reducing the waste of nitrogen;

[0017] 2. The workpiece can be transported through the provided conveying mechanism, and the friction force of the workpiece drives the damping bearing in the mounting plate to rotate, the movable bar and the fixed bar are separated, the flow restriction on the fixed bar is released, and the workpiece is automatically sprayed with nitrogen. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1This is the overall structural view of the utility model;

[0020] Figure 2 This is a schematic diagram of a half-section structure of a nitrogen protection shell of the utility model;

[0021] Figure 3 It is a half-section structural schematic diagram of the gas storage box of the utility model;

[0022] Figure 4 For this utility model Figure 2 A is an enlarged view of the middle image.

[0023] Description of reference numerals:

[0024] 1. Device base; 2. Conveyor belt; 3. Drive motor; 4. Fixed frame; 5. Drive electric cylinder; 6. Nitrogen protective shell; 61. Conveying chamber; 62. Fixed bar; 63. Movable bar; 64. Movable rod; 65. Spring; 66. Fixed plate; 67. Mounting plate; 68. Damping bearing; 69. Mounting rod; 7. Air storage box; 71. Air pump; 72. Connecting pipe; 73. Air bag; 74. Conveying pipe; 75. Inflating port. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] The utility model provides a technical solution:

[0027] See also Figures 1 to 4 , a coating nitrogen protection device for electron beam curing, comprising a device base 1, a fixing frame 4 is fixed on the upper surface of the device base 1, two driving electric cylinders 5 are fixed to the upper surface of the fixing frame 4 by bolts, the telescopic ends of the two driving electric cylinders 5 are both penetrated by the fixing frame 4, a nitrogen spraying mechanism for protecting the coating of the workpiece is fixed, and a conveying mechanism for conveying nitrogen is fixed on the upper end of the fixing frame 4;

[0028] The nitrogen spraying mechanism includes a nitrogen protective shell 6, a conveying chamber 61 is opened inside the nitrogen protective shell 6, a fixing bar 62 is fixed to the inner wall of the conveying chamber 61, the upper end of the fixing bar 62 is connected to a movable bar 63, a movable rod 64 penetrating the nitrogen protective shell 6 is fixed to the right side of the movable bar 63, the outer surface of the movable rod 64 is sleeved with a spring 65 abutting against the nitrogen protective shell 6, a fixing plate 66 is fixed to the end of the movable rod 64, a mounting plate 67 is fixed to the lower surface of the fixing plate 66, two damping bearings 68 are arranged inside the mounting plate 67, and mounting rods 69 fixedly connected to the mounting plate 67 are fixed inside the two damping bearings 68, a conveyor belt 2 is arranged inside the device base 1, and a driving motor 3 is fixed to one side of the device base 1 by bolts.

[0029] By adopting the above technical solution, before using the electron beam cured coating nitrogen protection device, the device base 1 is first placed in a suitable position, and then the workpiece to be processed is placed on the conveyor belt 2, and the drive motor 3 is started to drive the conveyor belt 2 to run, so as to transport the workpiece. When the workpiece is transported to the bottom of the mounting plate 67, the drive electric cylinder 5 set on the fixed frame 4 is started to drive the nitrogen protection shell 6 to move vertically, so that the mounting plate 67 is in contact with the upper surface of the workpiece. At this time, the conveyor belt 2 continues to transport the workpiece, so that the friction force of the workpiece drives the resistance in the mounting plate 67 to move. The damping bearing 68 rotates, and the mounting rod 69 is provided to ensure the stability of the damping bearing 68. Since the damping bearing 68 has a viscous damping characteristic, the damping bearing 68 rotates slowly, and the movement of the workpiece generates a thrust to push the fixed plate 66 to move, so that the movable rod 64 drives the movable bar 63 to move horizontally, and the movable rod 64 pushes the spring 65 to be compressed when it moves. At this time, the movable bar 63 and the fixed bar 62 are separated, and the flow restriction on the fixed bar 62 is released. Nitrogen is evenly sprayed to the surface of the workpiece along the lower end of the conveying chamber 61, thereby protecting the surface of the workpiece and effectively reducing the waste of nitrogen.

[0030] Specifically, Figure 1-Figure 4 As shown, the conveying mechanism includes an air storage box 7, which is fixed to the upper end of the fixing frame 4, and an air pump 71 is fixed to the upper surface of the air storage box 7 by bolts, and the output end of the air pump 71 is connected to a connecting pipe 72, and the end of the connecting pipe 72 is connected to an air bag 73 fixedly connected to the air storage box 7, and the lower surface of the air storage box 7 is connected to a conveying pipe 74 that is interconnected with the conveying cavity 61, and the outer wall of the air storage box 7 is provided with an inflation port 75.

[0031] By adopting the above technical solution, when the workpiece sprayed with nitrogen moves to the lower end of the nitrogen protective shell 6, the transportation is stopped, and the electron beam curing device in the nitrogen protective shell 6 irradiates and cures the workpiece. In the process of the spring 65's own extension and reset, the movable bar 63 is pushed to reset, and the fixed bar 62 is limited to avoid nitrogen leakage, so as to facilitate continuous use. Through the provided inflation pump 71, with the cooperation of the connecting pipe 72, it is convenient to fill air into the airbag 73. There is a valve on the inflation port 75, which connects the inflation port 75 and the external nitrogen replenishing pipe. The valve can be opened to add nitrogen to the air storage box 7.

[0032] Working principle: When the workpiece is transported to the bottom of the mounting plate 67, the driving electric cylinder 5 installed on the fixed frame 4 is started, driving the nitrogen protection shell 6 to move vertically, so that the mounting plate 67 contacts the upper surface of the workpiece, and the conveyor belt 2 continues to transport the workpiece. The friction of the workpiece drives the damping bearing 68 in the mounting plate 67 to rotate. Since the damping bearing 68 has a viscous damping characteristic, the damping bearing 68 rotates slowly, and the movement of the workpiece generates thrust, which pushes the fixed plate 66 to move, so that the movable rod 64 drives the movable bar 63 to move horizontally, and the movable bar 63 and the fixed plate 66 move horizontally. The strip 62 is separated, and the flow limitation on the fixed strip 62 is released. Since the airbag 73 is filled with air, the airbag 73 will squeeze the nitrogen stored in the air storage box 7, and the nitrogen is delivered to the delivery chamber 61 through the delivery pipe 74. The nitrogen is evenly sprayed to the surface of the workpiece along the lower end of the delivery chamber 61. The electron beam solidifier in the nitrogen protective shell 6 can irradiate and solidify the workpiece. In the process of the spring 65 stretching and resetting itself, the movable strip 63 is pushed to reset, and the fixed strip 62 is limited. Through the provided air pump 71, with the cooperation of the connecting pipe 72, air is filled into the airbag 73.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A coating nitrogen protection device for electron beam curing, comprising a device base (1), characterized in that: A fixing frame (4) is fixed on the upper surface of the device base (1), two driving electric cylinders (5) are fixed to the upper surface of the fixing frame (4) by bolts, the telescopic ends of the two driving electric cylinders (5) both penetrate the fixing frame (4) and are fixed with a nitrogen spraying mechanism for coating protection of the workpiece, and a conveying mechanism for conveying nitrogen is fixed on the upper end of the fixing frame (4); The nitrogen spraying mechanism comprises a nitrogen protective shell (6), a conveying cavity (61) is provided inside the nitrogen protective shell (6), a fixing bar (62) is fixed to the inner wall of the conveying cavity (61), the upper end of the fixing bar (62) is connected to a movable bar (63), a movable rod (64) penetrating the nitrogen protective shell (6) is fixed to the right side of the movable bar (63), the outer surface of the movable rod (64) is sleeved with a spring (65) abutting against the nitrogen protective shell (6), and a fixing plate (66) is fixed to the end of the movable rod (64).

2. The nitrogen protection device for electron beam curing coating according to claim 1, characterized in that: A mounting plate (67) is fixed to the lower surface of the fixing plate (66), two damping bearings (68) are arranged inside the mounting plate (67), and mounting rods (69) fixedly connected to the mounting plate (67) are fixed inside the two damping bearings (68).

3. The nitrogen protection device for electron beam curing coating according to claim 1, characterized in that: A conveyor belt (2) is arranged inside the device base (1), and a driving motor (3) is fixed to one side of the device base (1) by means of bolts.

4. The nitrogen protection device for electron beam curing coating according to claim 1, characterized in that: The conveying mechanism comprises an air storage box (7), the air storage box (7) is fixed to the upper end of the fixing frame (4), and an air pump (71) is fixed to the upper surface of the air storage box (7) by bolts.

5. The nitrogen protection device for electron beam curing coating according to claim 4, characterized in that: The output end of the inflation pump (71) is connected to a connecting pipe (72), and the end of the connecting pipe (72) is connected to an air bag (73) fixedly connected to the air storage box (7).

6. The nitrogen protection device for electron beam curing coating according to claim 5, characterized in that: The lower surface of the air storage box (7) is connected to a delivery pipe (74) which is in communication with the delivery chamber (61).

7. The nitrogen protection device for electron beam curing coating according to claim 6, characterized in that: The outer wall of the air storage box (7) is provided with an air charging port (75).

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