Air knife blowing device

Abstract

The invention relates to the technical field of blowing structures, in particular to an air knife blowing device which comprises a workbench, a fixed support, a movable supporting frame and a blowing mechanism, the fixed support is arranged on the workbench and comprises two fixed frames, a cross beam connected with the two fixed frames and a first supporting frame arranged on the cross beam; the movable support frame is mounted on one side of the first support frame; the blowing mechanism comprises a moving frame located below the cross beam and two air knives arranged on the moving frame. Each of the first support frame and the movable support frame comprises two vertical beams and at least two positioning rods connected with the two vertical beams, and a placement space is formed between the positioning rods on the first support frame and the positioning rods on the movable support frame; the two air knives are oppositely arranged on the two sides of the containing space, the moving frame drives the two air knives to move in a reciprocating mode, the two side vertical faces of the products in the containing space are purged, automatic batch purge of the products can be achieved, and the purge efficiency is remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of blowing structures, and in particular to an air knife blowing device. Background Art

[0002] During the lead frame cleaning process, residual water droplets need to be removed. Currently, this is mainly done manually with a handheld air gun, which can only clean one piece at a time. This not only requires a large number of operators, but also has low operating efficiency, resulting in increased production costs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an air knife blowing device to effectively solve the problems in the background technology.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: an air knife blowing device, comprising: Workbench; A fixed bracket, arranged on the workbench, comprising two fixed frames, a crossbeam connecting the two fixed frames, and a first support frame arranged on the crossbeam; A movable support frame, installed on one side of the first support frame; A purge mechanism, comprising a movable frame located below the crossbeam, and two air knives arranged on the movable frame; Wherein, the first support frame and the movable support frame each include two vertical beams and at least two positioning rods connecting the two vertical beams, and a placement space is formed between the positioning rods on the first support frame and the positioning rods on the movable support frame; The two wind knives are arranged oppositely on two sides of the placement space, and the movable frame drives the two wind knives to move back and forth to blow the two side surfaces of the product in the placement space.

[0005] Furthermore, the positioning rods on the first support frame and the positioning rods on the movable support frame are arranged in a one-to-one correspondence.

[0006] Furthermore, the movable support frame is hinged to the first support frame via a hinge, and a buckle structure is provided at one end of the movable support frame away from the hinged position.

[0007] Furthermore, the vertical beam is provided with a through hole for the positioning rod to pass through; The through hole is in the shape of an elongated strip along the vertical direction, and locking nuts are arranged at both ends of the positioning rod.

[0008] Furthermore, a guide groove is provided on the upper surface of the crossbeam.

[0009] Furthermore, a plurality of drainage holes are evenly distributed on both sides of the guide groove; The guide groove protrudes upward along the central axis position in the length direction to form a limiting surface for supporting the product, and the two side edges of the limiting surface form downwardly inclined drainage slopes.

[0010] Furthermore, a liquid level sensor is provided at a position of the guide groove corresponding to the drainage hole, and the liquid level sensor is used to monitor the liquid level height of the liquid in the guide groove in real time.

[0011] Furthermore, the total moving distance of the wind knife is divided into a fast moving section and a slow moving section along the moving direction; According to the signal of the liquid level sensor, the air knife is switched from the fast moving section to the slow moving section.

[0012] Further, the mobile frame includes a rodless cylinder and a mounting plate arranged on the rodless cylinder; The two wind knives are installed on the mounting plate, and an adjustment plate is provided on the mounting plate. The wind knife is fixed on the adjustment plate. The adjustment plate includes a positioning hole and an arc hole arranged in a circumferential direction around the positioning hole. The adjustment plate rotates around the positioning hole to adjust the angle between the wind outlet surface and the blowing surface of the wind knife.

[0013] Furthermore, a transparent protective cover is provided on the outer side of the fixing bracket.

[0014] The beneficial effects of the present invention are as follows: in the present invention, by setting up the first support frame and the movable support frame, batch purging of products can be achieved, and by setting up the purging mechanism, automatic purging can be achieved, thereby significantly improving the purging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the air knife blowing device in an embodiment of the present invention; Figure 2 It is a left side view of the air knife blowing device in the embodiment of the present invention; Figure 3 A top view of an air knife blowing device in an embodiment of the present invention; Figure 4 It is a schematic diagram of the structure of a mobile frame in an embodiment of the present invention; Figure 5Schematic diagram of the installation of the positioning rod in the embodiment of the present invention; Figure 6 It is a schematic diagram of the opening state of the first support frame and the movable support frame in an embodiment of the present invention; Figure 7 Schematic diagram of the internal structure of the crossbeam in an embodiment of the present invention; Figure 8 Schematic diagram of the rotation of the adjustment plate in an embodiment of the present invention.

[0017] Figure numerals: 1. workbench; 2. fixed bracket; 21. fixed frame; 22. crossbeam; 22a. guide groove; 22b. drainage hole; 22c. limit surface; 22d. drainage slope; 23. first support frame; 3. movable support frame; 4. purge mechanism; 41. movable frame; 411. rodless cylinder; 412. mounting plate; 413. adjustment plate; 413a. positioning hole; 413b. arc hole; 42. wind knife; 5. vertical beam; 5a. through hole; 6. positioning rod; 7. locking nut; 8. liquid level sensor. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] like Figures 1 to 8The wind knife 42 blowing device shown in the figure comprises: a workbench 1, a fixed support 2, a movable support frame 3 and a blowing mechanism 4, wherein the fixed support 2 is arranged on the workbench 1, and comprises two fixed frames 21, a crossbeam 22 connecting the two fixed frames 21, and a first support frame 23 arranged on the crossbeam 22; the movable support frame 3 is installed on one side of the first support frame 23; the blowing mechanism 4 comprises a mobile frame 41 located below the crossbeam 22, and two wind knives 42 arranged on the mobile frame 41; Among them, the first support frame 23 and the movable support frame 3 both include two vertical beams 5 and at least two positioning rods 6 connecting the two vertical beams 5, and a placement space is formed between the positioning rods 6 on the first support frame 23 and the positioning rods 6 on the movable support frame 3; two wind knives 42 are relatively arranged on both sides of the placement space, and the movable frame 41 drives the two wind knives 42 to move back and forth to blow the two side facades of the product in the placement space.

[0022] During the implementation of the present invention, multiple products are placed side by side in the placement space between the movable support frame 3 and the first support frame 23, and the vertical state of the products is maintained. The movable frame 41 drives the two wind knives 42 to move. As the wind knives 42 continue to move, the air curtain formed by the air outlets of the wind knives 42 will clean the water stains on the side facades of the products. The wind knives 42 move a single distance to form a purge, and reciprocating movement forms two-side purge tasks from different directions. In the present invention, batch purge of products can be achieved through the setting of the first support frame 23 and the movable support frame 3, and automatic purge can be achieved through the setting of the purge mechanism 4, which significantly improves the purge efficiency and reduces the number of operators.

[0023] In the present invention, the positioning rods 6 on the first support frame 23 and the positioning rods 6 on the movable support frame 3 are arranged in a one-to-one correspondence, forming a multi-point symmetrical support, ensuring that the lead frame remains stable during the placement and purging process.

[0024] In the preferred embodiment, the movable support frame 3 is hinged to the first support frame 23 by a hinge. When the lead frame needs to be placed or removed, the movable support frame 3 is flipped outward to increase the entrance spacing of the placement space, and a buckle structure is provided at one end of the movable support frame 3 away from the hinge position to ensure that the movable support frame 3 remains stable during operation and will not loosen due to external force or vibration, which ensures the stability of the lead frame during the purging process and improves the purging effect.

[0025] In the preferred embodiment of the present invention, a through hole 5a is provided on the vertical beam 5 for the positioning rod 6 to pass through; the through hole 5a is long in the vertical direction, and locking nuts 7 are provided at both ends of the positioning rod 6. The height position of the positioning rod 6 can be adjusted to adapt to products of different specifications.

[0026] In the present invention, a guide groove 22a is provided on the upper surface of the crossbeam 22. The liquid flowing down from the product converges into the guide groove 22a and finally enters the wastewater collection bucket. A drain valve is provided at the liquid outlet of the guide groove 22a to ensure normal purging when cleaning the wastewater collection bucket.

[0027] Since the residual liquid on the product is unevenly distributed, a large local flow rate may occur during the drainage process through the guide groove 22a, affecting the flow rate of the liquid. Therefore, preferably, a plurality of drainage holes 22b are evenly distributed on both sides of the guide groove 22a to divert the liquid in the guide groove 22a and reduce the flow pressure. In addition, the guide groove 22a is convex upward along the central axis position in the length direction to form a limiting surface 22c for supporting the product, and the two side edges of the limiting surface 22c form downwardly inclined drainage slopes 22d, which can accelerate the flow rate of the liquid in the guide groove 22a and avoid overflow.

[0028] In the present invention, when the wind knife 42 is moving and blowing the residual liquid on the finished product, when the liquid flow rate entering the guide groove 22a is greater than the outflow flow rate, the liquid in the guide groove 22a accumulates at the drainage hole 22b, and the wind knife 42 continues to move, and liquid overflow will occur. Therefore, in the preferred embodiment, the position of the guide groove 22a corresponding to the drainage hole 22b is provided with a liquid level sensor 8, and the liquid level sensor 8 is used to monitor the liquid level height of the liquid in the guide groove 22a in real time. According to the feedback signal of the liquid level sensor 8, when the liquid level reaches the preset warning value, the PLC system automatically adjusts the moving speed of the wind knife 42, so that the total moving distance of the wind knife 42 is divided into a fast moving section and a slow moving section along the moving direction, ensuring that the flow of the liquid in the guide groove 22a is always in a balanced state.

[0029] In the early stage of the movement of the wind knife 42, there are fewer water stains on the surface of the lead frame and the liquid will not accumulate in large quantities. At this time, rapid movement can quickly remove most of the water stains; in the later stage of the movement of the wind knife 42, the purged liquid has fallen into the guide groove 22a, and a part of it will flow out from the corresponding drainage hole 22b, while the other part continues to flow along the guide groove 22a, causing the liquid in the guide groove 22a to gradually increase. At this time, slowing down the purging speed can give the liquid sufficient time to flow out and avoid accumulation of liquid in the guide groove 22a.

[0030] Dividing the total moving distance of the air knife 42 into a fast moving section and a slow moving section can significantly improve the purging efficiency, prevent liquid accumulation, improve the purging effect, and adapt to different production environments and product requirements. This segmented movement method not only improves production efficiency, but also ensures the cleanliness of the lead frame and product quality.

[0031] In the present invention, the moving frame 41 includes a rodless cylinder 411 and a mounting plate 412 arranged on the rodless cylinder 411; two wind knives 42 are installed on the mounting plate 412, and an adjustment plate 413 is arranged on the mounting plate 412. The wind knives 42 are fixed on the adjustment plate 413, and the adjustment plate 413 includes a positioning hole 413a and an arc hole 413b arranged in a circumferential direction around the positioning hole 413a. The adjustment plate 413 rotates around the positioning hole 413a to adjust the angle between the air outlet surface and the blowing surface of the wind knife 42. Through the cooperation of the arc hole 413b and the positioning hole 413a, the angle of the wind knife 42 can be easily adjusted to ensure that the airflow of the wind knife 42 can be accurately aligned with the surface of the lead frame, thereby improving the blowing effect.

[0032] In a preferred embodiment of the present invention, a transparent protective cover is provided on the outer side of the fixing bracket 2. The transparent protective cover can effectively prevent the splashing of liquid during the purging process, protect the operator from potential liquid hazards, and also prevent the liquid from polluting the surrounding environment.

[0033] Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wind knife blowing device, characterized in that: include: Workbench; A fixed bracket, arranged on the workbench, comprising two fixed frames, a crossbeam connecting the two fixed frames, and a first support frame arranged on the crossbeam; A movable support frame, installed on one side of the first support frame; A purge mechanism, comprising a movable frame located below the crossbeam, and two air knives arranged on the movable frame; Wherein, the first support frame and the movable support frame each include two vertical beams and at least two positioning rods connecting the two vertical beams, and a placement space is formed between the positioning rods on the first support frame and the positioning rods on the movable support frame; The two wind knives are arranged oppositely on two sides of the placement space, and the movable frame drives the two wind knives to move back and forth to blow the two side surfaces of the product in the placement space.

2. The air knife blowing device according to claim 1, characterized in that: The positioning rods on the first support frame are arranged in one-to-one correspondence with the positioning rods on the movable support frame.

3. The air knife blowing device according to claim 1, characterized in that: The movable support frame is hinged to the first support frame through a hinge, and a buckle structure is provided at one end of the movable support frame away from the hinge position.

4. The air knife blowing device according to claim 1, characterized in that: The vertical beam is provided with a through hole for the positioning rod to pass through; The through hole is in the shape of an elongated strip along the vertical direction, and locking nuts are arranged at both ends of the positioning rod.

5. The air knife blowing device according to claim 1, characterized in that: A guide groove is provided on the upper surface of the crossbeam.

6. The air knife blowing device according to claim 5, characterized in that: A plurality of drainage holes are evenly distributed on both sides of the guide groove; The guide groove protrudes upward along the central axis position in the length direction to form a limiting surface for supporting the product, and the two side edges of the limiting surface form downwardly inclined drainage slopes.

7. The air knife blowing device according to claim 6, characterized in that: The guide grooves are provided with liquid level sensors at positions corresponding to the drainage holes, and the liquid level sensors are used to monitor the liquid level height of the liquid in the guide grooves in real time.

8. The air knife blowing device according to claim 7, characterized in that: The total moving distance of the wind knife is divided into a fast moving section and a slow moving section along the moving direction; According to the signal of the liquid level sensor, the air knife is switched from the fast moving section to the slow moving section.

9. The air knife blowing device according to claim 1, characterized in that: The mobile frame includes a rodless cylinder and a mounting plate arranged on the rodless cylinder; The two wind knives are installed on the mounting plate, and an adjustment plate is provided on the mounting plate. The wind knife is fixed on the adjustment plate. The adjustment plate includes a positioning hole and an arc hole arranged in a circumferential direction around the positioning hole. The adjustment plate rotates around the positioning hole to adjust the angle between the wind outlet surface and the blowing surface of the wind knife.

10. The air knife blowing device according to claim 1, characterized in that: The outer side of the fixing bracket is sleeved with a transparent protective cover.

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