Cooling circulation device of reflow soldering furnace for producing gas sensitive sensor

Abstract

The utility model discloses a reflow soldering furnace cooling circulation device for gas sensitive sensor production, which relates to the field of reflow soldering furnace devices, and comprises an equipment main body, a first air outlet is arranged at a position close to the upper part in the equipment main body, a first pushing piece is arranged below the first air outlet, a spring is arranged in the first pushing piece, and a second air outlet is arranged below the first pushing piece. And a pushing plate is installed at the front end of the spring, a second air outlet is formed in the lower surface of the first pushing piece, a second pushing piece is installed below the second air outlet, a third air outlet is formed in the lower surface of the second pushing piece, and a third pushing piece is installed below the third air outlet. The bottom plate and the movable cavity are arranged, through the vertical design, cold air circulation can be carried out while slow cooling is completed, occupied space is effectively reduced, the internal space structure of a plant is optimized, and production cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to reflow soldering furnace device field, especially in reflow soldering furnace cooling circulation device for gas sensor production. BACKGROUND

[0002] The gas sensor is used for detecting the gas concentration and component, and it plays an extremely important role in environmental protection and safety supervision, and the gas sensor is used in various components of gas, and since the temperature and humidity of the detection site change greatly, and there are a large amount of dust and oil mist etc., so that the working condition is relatively poor, and the gas will produce chemical reaction with the material of the sensing element, and adhere to the element surface, which often makes the performance worse, therefore, the gas sensor has the following requirements: the allowable concentration of the alarm gas and the concentration of other standard values of the gas can be detected, the long-term stable work can be realized, the repeatability is good, the response speed is fast, the influence of the coexisting substances is small etc.

[0003] The existing gas sensor circuit board production generally combines SMT and circuit board plug-in welding two production processes, the SMT is a kind of circuit assembly technology, which installs the surface mounted device without pin or short pin on the surface of FPC or PCB or other substrate, and is welded and assembled by reflow soldering method, the SMT part is completed, then the circuit board is welded and assembled, after the welding is completed, the element and the PCB need to be slowly cooled to prevent stress concentration and potential damage, the cooling area is used to gradually solidify the welding point, and ensures that all parts can be safely welded, therefore, the cooling area directly affects the welding quality and reliability.

[0004] At present, the reflow soldering furnace includes a preheating area, a welding area and a cooling area, and since the cooling area needs to be slowly cooled, the length of the equipment is relatively long, which is not conducive to the space utilization of the factory building, and the temperature control of the cooling area needs multiple refrigerators to adjust the temperature, thereby increasing the production cost.

[0005] Therefore, it is necessary to provide a reflow soldering furnace cooling circulation device for gas sensor production to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a reflow soldering furnace cooling circulation device for gas sensor production, to solve the problem that the cooling area needs to be slowly cooled, so that the length of the equipment is relatively long, which is not conducive to the space utilization of the factory building, and the temperature control of the cooling area needs multiple refrigerators to adjust the temperature, thereby increasing the production cost.

[0007] To achieve the above object, the utility model provides following technical scheme: A reflow soldering furnace cooling circulation device for gas sensor production, equipment main part is close to upper position in the equipment main part inside Install a no.

[0008] The other side surface of the equipment main body is provided with a lead screw box, the lead screw box has two, and is axially symmetrically distributed on the other side surface of the equipment main body, the upper surface of the lead screw box is provided with a lead screw motor, the lead screw box is internally provided with a lead screw, the lead screw is in transmission connection with the lead screw motor, the movable clamping piece is provided on the lead screw, and the placing plate frame is provided below the movable clamping piece.

[0009] The upper surface of the placing plate frame is provided with a roller, the bottom plate is provided on the placing plate frame, the sliding groove is formed in the bottom plate, the sliding groove has two, and is axially symmetrically distributed on the bottom plate, the clamping strip slot is formed in the sliding groove, the butt joint piece is provided on the upper surface of the bottom plate close to the rear position, and the air supply port is provided on the front surface of the butt joint piece.

[0010] The refrigeration plate is provided above the bottom plate, the second hole is formed in the refrigeration plate, the through groove is formed in the refrigeration plate, the through groove is connected with the air supply port, the connecting block is provided on the two side surfaces of the refrigeration plate, the clamping strip is provided on the connecting block, the clamping strip is located in the clamping strip slot, and the connecting block is located in the sliding groove.

[0011] Preferably, the placing plate is provided on the upper surface of the connecting block, the first hole is formed in the placing plate, and the handle is provided on the front surface of the placing plate.

[0012] Preferably, the refrigeration machine is provided on the rear surface of the equipment main body, and the main pipeline is provided on the refrigeration machine.

[0013] Preferably, the auxiliary pipeline is provided on the main pipeline, the auxiliary pipeline has three, and corresponds to the first air outlet, the second air outlet and the third air outlet respectively.

[0014] Preferably, the finished product port is provided on the front surface of the equipment main body, and the side plate is provided on the side surface of the equipment main body.

[0015] Preferably, the diameter of the first hole is greater than that of the second hole.

[0016] Preferably, the rear end of the bottom plate is designed as an inclined surface, and the front end of the bottom plate and the inside of the equipment main body form a movable cavity.

[0017] Preferably, a rebound cavity is formed between the first pushing member and the pushing plate.

[0018] Preferably, the third pushing member is larger than the second pushing member, and the second pushing member is larger than the first pushing member.

[0019] Preferably, a welding furnace body is installed on one side of the equipment body, a control switch is installed on the welding furnace body, a preheating area is installed on the welding furnace body, and a welding area is installed on the other side of the preheating area.

[0020] The beneficial technical effects of the utility model lie in:

[0021] The bottom plate and the movable cavity can push the placing plate forward through the pushing member while cooling, so that the butt joint gradually moves away from the air outlet, and the element is slowly cooled through the way of moving away from the air outlet. The device is vertically designed, the problem of long cooling area and space occupation of the existing device is solved, the slow cooling is completed, the occupation of the site is effectively reduced, and the internal space structure of the factory building is optimized.

[0022] The refrigeration machine, the main pipeline and the auxiliary pipeline are combined with the principle of cold air sinking through one refrigeration equipment, the cold air is gathered below the device, a low-temperature area is formed, when the bottom plate descends, the cold air below is discharged from the movable cavity, the circulation of the cold air is realized, the cooling of the element is completed, the problem that the existing device needs multiple equipment for cooling is solved, and the production cost is saved. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is an overall structure schematic view of the cooling circulation device of the reflow soldering furnace for the gas sensor production of the utility model;

[0024] Figure 2 It is an equipment body schematic view of the cooling circulation device of the reflow soldering furnace for the gas sensor production of the utility model;

[0025] Figure 3 It is a rear view of the equipment body of the cooling circulation device of the reflow soldering furnace for the gas sensor production of the utility model;

[0026] Figure 4 It is an internal view of the equipment body of the cooling circulation device of the reflow soldering furnace for the gas sensor production of the utility model;

[0027] Figure 5 It is a split view of the refrigeration plate of the cooling circulation device of the reflow soldering furnace for the gas sensor production of the utility model;

[0028] Figure 6 It is a side view of the equipment body of the cooling circulation device of the reflow soldering furnace for the gas sensor production of the utility model;

[0029] In the figure: 1, the device main body; 2, finished product mouth; 3, welding furnace main body; 4, control switch; 5, preheating zone; 6, welding zone; 7, side plate; 8, No. 1 air outlet; 9, butt joint; 10, screw motor; 11, placing plate; 12, No. 1 hole; 13, screw box; 14, handle; 15, refrigerator; 16, main pipeline; 17, auxiliary pipeline; 18, No. 1 pushing piece; 19, spring; 20, pushing plate; 21, No. 2 air outlet; 22, No. 2 pushing piece; 23, No. 3 air outlet; 24, No. 3 pushing piece; 25, movable clamping piece; 26, placing plate frame; 27, bottom plate; 28, sliding groove; 29, clamping groove; 30, through groove; 31, connecting block; 32, clamping strip; 33, refrigeration plate; 34, No. 2 hole; 35, air supply opening; 36, movable cavity; 37, rebound cavity; 38, roller; 39, screw. DETAILED DESCRIPTION

[0030] As Figures 1-6 shown, the utility model provides a kind of gas sensor production with reflow soldering furnace cooling circulation device, including equipment main body 1, equipment main body 1 inside close to upper position is installed No. 1 air outlet 8, No. 1 air outlet 8 is inclined plane design, No. 1 air outlet 8 below is installed No. 1 pushing piece 18, No. 1 pushing piece 18 is L type design, spring 19 is installed in No. 1 pushing piece 18, spring 19 front end is installed with pushing plate 20, No. 1 pushing piece 18 lower surface is installed with No. 2 air outlet 21, No. 2 air outlet 21 below is installed with No. 2 pushing piece 22, No. 2 pushing piece 22 lower surface is installed with No. 3 air outlet 23, No. 3 air outlet 23 below is installed with No. 3 pushing piece 24.

[0031] Equipment main body 1 other side surface is installed with screw box 13, screw box 13 has two, and is axially symmetrical distribution on equipment main body 1 other side surface, screw motor 10 is installed on screw box 13 upper surface, screw 39 is installed in screw box 13 inside, and screw 39 is transmission connection with screw motor 10, movable clamping piece 25 is installed on screw 39, and the role of movable clamping piece 25 is to limit the up-down displacement of bottom plate 27, and placing plate frame 26 is installed below movable clamping piece 25.

[0032] Roller 38 is installed on the upper surface of placing plate frame 26, and the role of roller 38 is to make bottom plate 27 more smoothly move forward, and placing plate frame 26 is installed on bottom plate 27, and sliding groove 28 is opened on bottom plate 27, and sliding groove 28 has two, and is axially symmetrical distribution on bottom plate 27, and clamping groove 29 is opened in sliding groove 28, and butt joint 9 is installed on the upper surface of bottom plate 27 close to rear position;

[0033] The bottom plate 27 is provided with a refrigeration plate 33, the refrigeration plate 33 is provided with a second hole 34, the refrigeration plate 33 is provided with a through groove 30, the through groove 30 is connected with a air supply port 35, the refrigeration plate 33 is provided with a connecting block 31 on both sides, the connecting block 31 is provided with a clamping strip 32, the clamping strip 32 is located in the clamping groove 29, and the connecting block 31 is located in the sliding groove 28.

[0034] Further, the connecting block 31 is provided with a placing plate 11 on the upper surface, the placing plate 11 is provided with a first hole 12, and the placing plate 11 is provided with a handle 14 on the front surface.

[0035] Further, the equipment body 1 is provided with a refrigeration machine 15 on the rear surface, and the refrigeration machine 15 is provided with a main pipeline 16.

[0036] Further, the main pipeline 16 is provided with a sub-pipeline 17, and the sub-pipeline 17 has three, which correspond to the first air outlet 8, the second air outlet 21 and the third air outlet 23 respectively.

[0037] Further, the equipment body 1 is provided with a finished product port 2 on the front surface, and the equipment body 1 is provided with a side plate 7 on one side surface.

[0038] Further, the first hole 12 is larger in diameter than the second hole 34, and the purpose is to uniformly deliver cold air to the placing plate 11.

[0039] Further, the rear end of the bottom plate 27 is designed as an inclined surface, the front end of the bottom plate 27 forms a movable cavity 36 with the inside of the equipment body 1, the movable cavity 36 can reserve a moving space for the bottom plate 27 when the bottom plate 27 is lowered, so that the bottom plate 27 gradually moves away from the first air outlet 8, and the movable cavity 36 can discharge the cold air accumulated below when the bottom plate 27 is raised, thereby realizing cold air circulation.

[0040] Further, the first pushing piece 18 and the pushing plate 20 form a rebound cavity 37.

[0041] Further, the third pushing piece 24 is larger in size than the second pushing piece 22, and the second pushing piece 22 is larger in size than the first pushing piece 18, and the purpose is to gradually push the bottom plate 27 to the front, so that the butt joint piece 9 gradually moves away from the first air outlet 8 and the second air outlet 21.

[0042] Further, the equipment body 1 is provided with a welding furnace body 3 on one side, the welding furnace body 3 is provided with a control switch 4, the welding furnace body 3 is provided with a preheating area 5, and the preheating area 5 is provided with a welding area 6 on the other side.

[0043] In use, first need to start the control switch 4, let the element through the preheating zone 5 and welding zone 6 in turn, the welding finished element is sent to the placement plate 11, then start the refrigerator 15, through the sub pipeline 17 on the main pipeline 16, the cold air is sent to the first air outlet 8, the second air outlet 21 and the third air outlet 23, then through the lead screw motor 10 drive the lead screw 39 downward, the bottom plate 27 follows downward, in the process of descending, will pass through the first air outlet 8, the second air outlet 21 and the third air outlet 23 in turn, however, affected by the first pusher 18, the second pusher 22 and the third pusher 24, in the process of descending, the bottom plate 27 will gradually move forward, so that the butt joint 9 gradually away from the second air outlet 21 and the third air outlet 23, through this way, the air volume gradually weakens, so as to complete the slow cooling, while completing the slow cooling, effectively reduce the occupation of the site, optimize the internal space structure of the factory building, in the process of use, the bottom plate 27 descends and drives the push plate 20 to descend, when the push plate 20 contacts the rebound cavity 37, affected by the spring 19 inside the rebound cavity 37, the bottom plate 27 will move forward, when the element cooling is completed, open the finished product port 2, pull out the placement plate 11 outward, then take out the processed element, push the placement plate 11 back, reset the bottom plate 27.

Claims

1. A reflow oven cooling circulation device for producing gas-sensitive sensors, characterized in that: The device includes a main body (1), and an air outlet (8) is installed inside the main body (1) near the top. The air outlet (8) is designed with a slope. A pusher (18) is installed below the air outlet (8). The pusher (18) is designed with an L shape. A spring (19) is installed inside the pusher (18). A pusher plate (20) is installed at the front end of the spring (19). An air outlet (21) is installed on the lower surface of the pusher (18). A pusher (22) is installed below the air outlet (21). An air outlet (23) is installed on the lower surface of the pusher (22). A pusher (24) is installed below the air outlet (23). A lead screw box (13) is installed on the other side surface of the main body (1) of the equipment. There are two lead screw boxes (13), which are symmetrically distributed on the other side surface of the main body (1). A lead screw motor (10) is installed on the upper surface of the lead screw box (13). A lead screw (39) is installed inside the lead screw box (13). The lead screw (39) is connected to the lead screw motor (10) for transmission. A movable clamp (25) is installed on the lead screw (39). A plate holder (26) is installed below the movable clamp (25). The upper surface of the plate holder (26) is equipped with rollers (38), and the plate holder (26) is equipped with a base plate (27). The base plate (27) has a sliding groove (28). There are two sliding grooves (28), which are symmetrically distributed on the base plate (27). The sliding groove (28) has a retaining groove (29). The upper surface of the base plate (27) is equipped with a connecting piece (9) near the rear. The front surface of the connecting piece (9) is equipped with an air outlet (35). A cooling plate (33) is installed above the base plate (27). The cooling plate (33) has a second hole (34) and a through groove (30) connected to the air outlet (35). Connecting blocks (31) are installed on both sides of the cooling plate (33). A retaining strip (32) is installed on the connecting block (31). The retaining strip (32) is located in the retaining strip groove (29), and the connecting block (31) is located in the sliding groove (28).

2. The reflow oven cooling circulation device for gas sensor production according to claim 1, characterized in that: The upper surface of the connecting block (31) is equipped with a placement plate (11), and a hole (12) is opened on the placement plate (11). A handle (14) is installed on the front surface of the placement plate (11).

3. The reflow oven cooling circulation device for gas sensor production according to claim 2, characterized in that: A refrigeration unit (15) is installed on the rear surface of the main body (1) of the equipment, and a main pipe (16) is installed on the refrigeration unit (15).

4. The reflow oven cooling circulation device for gas sensor production according to claim 3, characterized in that: The main pipe (16) is equipped with a secondary pipe (17), and there are three secondary pipes (17), which correspond to the first air outlet (8), the second air outlet (21) and the third air outlet (23) respectively.

5. The reflow oven cooling circulation device for gas sensor production according to claim 4, characterized in that: The front surface of the main body (1) of the equipment is provided with a finished product port (2), and a side plate (7) is provided on one side surface of the main body (1).

6. The reflow oven cooling circulation device for gas sensor production according to claim 5, characterized in that: The diameter of the first hole (12) is larger than that of the second hole (34).

7. The reflow oven cooling circulation device for gas sensor production according to claim 6, characterized in that: The rear end of the base plate (27) is designed with a slope, and the front end of the base plate (27) forms an active cavity (36) with the inside of the main body of the equipment (1).

8. The reflow oven cooling circulation device for gas sensor production according to claim 7, characterized in that: A springback cavity (37) is formed between the first pusher (18) and the pusher plate (20).

9. The reflow oven cooling circulation device for producing gas-sensitive sensors according to claim 8, characterized in that: The size of the third pusher (24) is larger than that of the second pusher (22), and the size of the second pusher (22) is larger than that of the first pusher (18).

10. The reflow oven cooling circulation device for producing gas-sensitive sensors according to claim 9, characterized in that: The main body of the equipment (1) is equipped with a welding furnace body (3) on one side, a control switch (4) is installed on the welding furnace body (3), a preheating zone (5) is installed on the welding furnace body (3), and a welding zone (6) is installed on the other side of the preheating zone (5).

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