Automatic opening sealing door device

Abstract

The present invention discloses an automatic opening sealing door device, which is applied to the precious metal electroplating process of the continuous lead frame surface treatment production line, and has a spot plating cabinet, a frame, a cover plate and a lifting pulley mechanism, wherein the frame is installed on the upper part of the spot plating cabinet, and the lifting pulley mechanism is installed on the frame. After the lifting pulley mechanism controls the cover plate to rise to a certain position along the slide fixed on the spot plating cabinet, the transmission gear installed on the lifting pulley mechanism is coupled with the flip rack fixed on the frame, and the transmission gear continues to rise and is coupled with the flip gear fixed on the cover plate, so that the flip gear drives the cover plate to fold inward. The automatic opening sealing door device can realize automatic operation, and is convenient, safe and fast to use. The cover plate can be automatically lifted and opened by using a motor and a synchronous belt, and the cover plate can be automatically flipped and folded during the lifting process by using a gear and a rack, so as to prevent the liquid accumulated on the cover plate from splashing out.

Description

Technical Field

[0001] The invention relates to the technical field of a continuous semiconductor lead frame surface treatment production line, in particular to an automatic sealing door opening device. Background Art

[0002] Precision integrated circuits are important core electronic products in the modern electronic information industry. They are made of high-precision chips and lead frame packages. The lead frame is a key material in integrated circuits. Its important role is to support chips, protect internal components, and connect external circuits. With the rapid development of electronic information high-tech, products are developing towards miniaturization, multi-functions, and intelligence. Therefore, lead frame materials are driven to develop in the direction of finer lead pitch and higher density.

[0003] However, in the field of semiconductor lead frame surface treatment production technology, it is still at the level of only being able to process low-end lead frames, which cannot meet the technical requirements of lead frame products for the rapid development of electronic information high-tech. Therefore, the research and development of continuous lead frame surface treatment production equipment has become a very important topic, especially the research and development of a lead frame surface treatment production line discharge equipment with an automatic opening sealing door device supporting the precious metal electroplating process has become an urgent issue to be solved.

[0004] In the precious metal electroplating process of the continuous lead frame surface treatment production line, vertical spot plating equipment is required. Because the vertical spot plating equipment has relatively large dimensions and the liquid temperature is high, its cover plate is required to have the characteristics of large size, high temperature resistance and impermeability. It is precisely because of the large size of the cover plate that the cover plate is very bulky. Use transparent acrylic as the basic cover plate workpiece, and add a reinforcement mechanism to resist deformation; in order to open and close the cover plate more lightly, two schemes are currently used: Scheme 1, the opening and closing method of the nitrogen spring and the additional support rod, through the lever change of the torque, the cover plate is opened and closed more lightly; Scheme 2, by adding a counterweight to the cover plate, the cover plate is opened and closed more lightly. However, even if the above two schemes are adopted, the opening and closing method of the cover plate of the vertical spot plating equipment is still mainly manual operation, and the operator needs to be close to the operation. It is inconvenient to open and close when the weight is large, and the liquid splashes and drips outside, causing danger. That is to say, the cover plate of the vertical spot plating equipment still has the problems of inconvenient manual opening and closing, resulting in a small equipment operation space, and causing the liquid to drip and leak outward when opening and closing. Summary of the invention

[0005] The technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, an automatic opening sealing door device is provided, which can realize automated operation and is easy, safe and quick to use. A motor and a synchronous belt are used to automatically lift and open the cover plate, and a gear and a rack are used to automatically flip and fold the cover plate during the lifting process to prevent liquid medicine accumulated on the cover plate from splashing out.

[0006] The technical solution adopted by the present invention to solve its technical problems is: an automatic opening sealed door device, comprising a spot plating cabinet, a frame, a cover plate and a lifting pulley mechanism, wherein the frame is installed on the upper part of the spot plating cabinet, and the lifting pulley mechanism is installed on the frame. After the lifting pulley mechanism controls the cover plate to rise to a certain position along a slide groove fixed on the spot plating cabinet, the transmission gear installed on the lifting pulley mechanism is coupled and contacted with the flip rack fixed on the frame, and the transmission gear continues to rise and is coupled and contacted with the flip gear fixed on the cover plate, so that the flip gear drives the cover plate to fold inward.

[0007] To further specifically define, in the above technical solution, the lifting pulley mechanism includes a pulley mechanism, a motor, a synchronous belt, a synchronous wheel, a pulley support connecting rod and a synchronous rotating shaft; the pulley mechanism includes two pulley brackets distributed at intervals and a plurality of pulleys installed on the pulley brackets, and the two pulley brackets are connected by the pulley support connecting rod; the motor is installed on the frame, and the synchronous rotating shaft is installed at the power output end of the motor, and two synchronous wheels are installed on the synchronous rotating shaft at intervals, and each synchronous wheel is connected to the driven wheel located directly below it through the synchronous belt transmission, and the driven wheel is installed on the spot plating cabinet; two belt clamps are installed on the pulley support connecting rod at intervals, and the belt clamps are used to clamp the synchronous belts at corresponding positions, and the pulley mechanism is controlled by the motor and lifted upward by two synchronous belts.

[0008] To further specify, in the above technical solution, a photoelectric sensor switch and a travel switch are also installed on the frame, and the motor stops running after the pulley mechanism contacts the photoelectric sensor switch, and the travel switch is used to control the lower side corner of the cover plate to disengage from the slide groove.

[0009] It is further specifically defined that in the above technical solution, the number of the transmission gear, the flip rack and the flip gear is two, the two transmission gears are respectively installed on the inner side surfaces of the corresponding pulley brackets, the two flip racks are symmetrically fixed on the inner side surfaces of the frame, and the two flip gears are symmetrically fixed on the outer side surfaces of the cover plate.

[0010] To further specifically define, in the above technical solution, the pulley bracket is composed of a U-shaped bracket and a V-shaped bracket, the first side of the V-shaped bracket is fixedly connected to the open end of the U-shaped bracket, the transmission gear is installed on the second side of the V-shaped bracket, and the free end of the second side of the V-shaped bracket is hinged to the outer surface of the cover plate.

[0011] To further specifically define, in the above technical solution, a cover plate reinforcement rib is installed on the outside of the cover plate, and the flip gear is fixed on a combination of the cover plate reinforcement rib and the cover plate.

[0012] The beneficial effects of the present invention are as follows: an automatic opening sealing door device of the present invention can realize automated operation, is easy, safe and quick to use, utilizes a motor and a synchronous belt to enable the cover plate to automatically rise and fall and open and close, utilizes a gear and a rack to enable the cover plate to automatically flip and fold during the lifting process, prevents liquid medicine accumulated on the cover plate from splashing out, reduces labor intensity, improves work efficiency, and can ensure the uniformity of the quality of the lead frame products, thereby improving the production efficiency of the continuous lead frame surface treatment production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] 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 this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of the cover plate in a vertically rising state;

[0015] Figure 2 yes Figure 1 Side view of

[0016] Figure 3 It is a structural schematic diagram of the cover plate in a completely folded state;

[0017] Figure 4 yes Figure 3 Side view of

[0018] Figure 5 It is a schematic diagram of the coupling contact of the transmission gear, the flip rack and the flip gear;

[0019] Figure 6 It is a schematic diagram of the assembly structure of the pulley bracket, the transmission gear and the pulley;

[0020] Figure 7 It is a structural diagram of the cover.

[0021] The numbers in the figure are: 1. spot plating cabinet; 2. frame; 3. cover plate; 4. transmission gear; 5. flip rack; 6. flip gear; 7. motor; 8. synchronous belt; 9. synchronous wheel; 10. pulley support connecting rod; 11. synchronous rotating shaft; 12. pulley bracket; 12-1. U-shaped bracket; 12-2. V-shaped bracket; 13. pulley; 14. driven wheel; 15. belt clamp; 16. motor fixing seat; 17. bearing support seat; 18. photoelectric sensor switch baffle; 19. movable shaft; 20. pad. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by the terms “one side”, “the other side”, “both sides”, “between”, “middle”, “upper end”, “lower end”, etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The invention discloses an automatic opening sealing door device, which comprises a spot plating cabinet 1, a frame 2, a cover plate 3 and a lifting pulley mechanism. The spot plating cabinet 1 is made of polypropylene, the frame 2 is made of stainless steel, the cover plate 3 is made of a transparent acrylic plate, the frame 2 is mounted on the upper part of the spot plating cabinet 1, and the lifting pulley mechanism is mounted on the frame 2. A slide groove is welded and fixedly provided on the inner side of the side plate of the spot plating cabinet 1, and the side edge of the cover plate 3 is stuck in the slide groove to make a vertical upward movement. When the cover plate 3 rises in the early stage, the side edge of the cover plate 3 is stuck in the slide groove, and the vertical upward state can be achieved in the early stage. After the lifting pulley mechanism controls the cover plate 3 to rise to a certain position along the slide groove, the transmission gear 4 installed on the lifting pulley mechanism is coupled with the flip rack 5 fixed on the frame 2, and the transmission gear 4 continues to rise and is coupled with the flip gear 6 fixed on the cover plate 3, so that the flip gear 6 drives the cover plate 3 to fold inward. The flip rack 5 is made of polypropylene.

[0026] The lifting pulley mechanism comprises a pulley mechanism, a motor 7, a synchronous belt 8, a synchronous wheel 9, a pulley support connecting rod 10 and a synchronous rotating shaft 11. The pulley support connecting rod 10 and the synchronous rotating shaft 11 are both made of stainless steel.

[0027] The pulley mechanism includes two pulley brackets 12 distributed at intervals and a plurality of pulleys 13 mounted on the pulley brackets 12. The pulley brackets 12 are made of stainless steel. The two pulley brackets 12 are connected by a pulley support connecting rod 10. A motor fixing seat 16 is fixed on the top of the frame 2. The motor 7 is mounted on the motor fixing seat 16 on the frame 2. The synchronous rotating shaft 11 is mounted on the power output end of the motor 7, and the other end of the synchronous rotating shaft 11 is supported by a bearing support seat 17 fixed on the top of the frame 2. Two synchronous wheels 9 are installed at intervals on the synchronous rotating shaft 11. The two synchronous wheels 9 are symmetrically installed on the synchronous rotating shaft 11. Each synchronous wheel 9 is connected to the driven wheel 14 located directly below it through a synchronous belt 8. The synchronous wheel 9 can also be called a driving wheel. The driven wheel 14 is installed on the spot plating cabinet 1. The two driven wheels 14 are symmetrically installed on the top of the spot plating cabinet 1. Two belt clamps 15 are installed at intervals on the pulley support connecting rod 10. The belt clamps 15 are made of stainless steel. The belt clamp 15 is used to clamp the synchronous belt 8 at the corresponding position, and the pulley mechanism is controlled by the motor 7 and lifted upward through the two synchronous belts 8.

[0028] A photoelectric induction switch is also installed on the frame 2. The photoelectric induction switch converts the displacement signal into a photoelectric signal. It can adopt electronic induction, visible light transmission, or infrared light transmission. It does not need to directly contact other objects during work. It relies on electromagnetic induction at a certain distance or the blocking and opening of the light path to transmit the switch signal. It has a long service life and is not affected by dust, water vapor, etc. After the pulley mechanism contacts the photoelectric induction switch, the motor 7 stops running.

[0029] A travel switch is also installed on the frame 2. The travel switch is a mechanical travel switch. When the mechanical travel switch is pressed by mechanical force, the internal micro-action is performed. It has a simple structure, low cost, and is universal for voltages below 380v and 5A. The travel switch is used to control the lower corner of the side of the cover plate 3 to separate from the chute. When the travel switch controls the lower corner of the side of the cover plate 3 to separate from the chute, the cover plate 3 flips 15°. At this time, the rising height of the cover plate 3 is about 80mm, and the cover plate 3 stops rising.

[0030] There are two transmission gears 4, two flip racks 5 and two flip gears 6. The two transmission gears 4 are respectively mounted on the inner side of the corresponding pulley bracket 12. The two flip racks 5 are symmetrically fixed on the inner side of the frame 2. The two flip gears 6 are symmetrically fixed on the outer side of the cover plate 3. Specifically, the flip gear 6 is fixed on the outer side of the cover plate 3 through a movable shaft 19 and a pad 20. The movable shaft 19 is made of stainless steel. The flip gear 6 and the pad 20 are both made of polypropylene. The pad 20 is located between the outer side of the cover plate 3 and the inner side of the flip gear 6. The cover plate 3 is equipped with a cover plate reinforcement rib on the outside. The cover plate reinforcement rib is made of stainless steel. The setting of the cover plate reinforcement rib enhances the structural strength of the cover plate 3. The flip gear 6 is fixed on the combination of the cover plate reinforcement rib and the cover plate 3.

[0031] The pulley bracket 12 is composed of a U-shaped bracket 12-1 and a V-shaped bracket 12-2, the first side of the V-shaped bracket 12-2 is fixedly connected to the open end of the U-shaped bracket 12-1, the transmission gear 4 is installed on the second side of the V-shaped bracket 12-2, the installation position of the transmission gear 4 is adjacent to the sharp corner of the V-shaped bracket 12-2, and the free end of the second side of the V-shaped bracket 12-2 is hinged to the outer side of the cover plate 3. Specifically, four pulleys 13 are installed on each pulley bracket 12, and the four pulleys 13 are distributed in a matrix, two of which are located at the bottom of the U-shaped bracket 12-1, and the other two pulleys 13 are located on the assembly area between the first side of the V-shaped bracket 12-2 and the open end of the U-shaped bracket 12-1. In addition, a photoelectric sensor switch baffle 18 is installed on the outer surface of the first side of the V-shaped bracket 12-2. The photoelectric sensor switch baffle 18 is used to block light waves so that the photoelectric sensor switch receives signals. The photoelectric sensor switch baffle 18 is made of Q235 (ordinary carbon structural steel).

[0032] The present invention is based on the following formula:

[0033] P=F*V=mg*V ①

[0034]

[0035]

[0036] Among them, P represents the initial power of the motor; F represents the motor torque; V represents the linear speed, specifically, V represents the required rising speed of the cover; m represents the mass of the cover; g represents the free fall acceleration; T represents the torque; R represents the effective radius of the synchronous wheel; n represents the number of revolutions of the synchronous wheel, which is determined by the motor.

[0037] The above formula is converted as follows:

[0038]

[0039] If the unit of P is KW, then

[0040] Formula ⑤ is a preliminary calculation of the required motor power.

[0041] In addition, for the flip gear 6, the rack length of the flip gear 6 is set to L, the number of teeth of the flip gear 6 is m, and the module of the flip gear 6 is z, then Here, α is the required flipping angle of the cover.

[0042] The working principle of the automatic opening sealing door device is as follows: the pulley mechanism is controlled by the motor 7 and lifted upward by the synchronous belt 8. When it rises to a certain position, the transmission gear 4 is coupled and contacted with the flip rack 5 fixed on the frame 2. When the pulley mechanism continues to rise, the transmission gear 4 rotates clockwise. At this time, the flip gear 6 coupled with the transmission gear 4 rotates counterclockwise, and the flip gear 6 drives the cover plate 3 to fold inward counterclockwise. When it reaches a certain position, the pulley mechanism contacts the photoelectric sensor switch, the motor 7 stops running, and the folding action of the cover plate 3 stops, that is, after the cover plate 3 is completely folded, the motor 7 stops running; when descending, the action is reversed. Under the action of gravity, the cover plate 3 falls, the flip gear 6 rotates clockwise, the cover plate 3 folds outward and descends to a vertical state, disengages from the flip rack 5, stops folding, and descends to engage.

[0043] The automatic opening sealing door device can realize automatic operation, and is convenient, safe and fast to use. The motor 7 and the synchronous belt 8 are used to automatically lift and open the cover plate 3. The transmission gear 4, the flip rack 5 and the flip gear 6 are used to automatically flip and fold the cover plate 3 during the lifting process to prevent the liquid accumulated on the cover plate from splashing out and prevent people from contacting the liquid. Specifically, when the spot plating cabinet is opened, the cover plate 3 gradually rises along the internal slide groove. When it reaches the middle, the transmission gear 4 contacts the flip rack 5, and then drives the flip gear 6 connected and fixed to the cover plate 3 to fold the cover plate 3 inward to prevent the upper liquid from dripping outward. The device reduces labor intensity, improves work efficiency, and can ensure the uniformity of lead frame product quality, thereby improving the production efficiency of the continuous lead frame surface treatment production line.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic sealing door opening device, characterized in that: The invention has a spot plating cabinet, a frame, a cover plate and a lifting pulley mechanism. The frame is installed on the upper part of the spot plating cabinet, and the lifting pulley mechanism is installed on the frame. After the lifting pulley mechanism controls the cover plate to rise to a certain position along the slide fixed on the spot plating cabinet, the transmission gear installed on the lifting pulley mechanism is coupled with the flip rack fixed on the frame, and the transmission gear continues to rise and is coupled with the flip gear fixed on the cover plate, so that the flip gear drives the cover plate to fold inward; the lifting pulley mechanism includes a pulley mechanism, a motor, a synchronous belt, a synchronous wheel, a pulley support connecting rod and a synchronous rotating shaft; the pulley mechanism includes two pulley brackets distributed at intervals and a plurality of pulleys installed on the pulley brackets, and the two pulley brackets are connected by a pulley support The connecting rod is connected; the motor is installed on the frame, the synchronous rotating shaft is installed at the power output end of the motor, two synchronous wheels are installed on the synchronous rotating shaft at intervals, each synchronous wheel is connected to the driven wheel located directly below it through a synchronous belt transmission, and the driven wheel is installed on the spot plating cabinet; two belt clamps are installed on the pulley support connecting rod at intervals, the belt clamps are used to clamp the synchronous belts at corresponding positions, and the pulley mechanism is controlled by the motor and lifted upward through two synchronous belts; a photoelectric sensor switch and a travel switch are also installed on the frame, and the motor stops running after the pulley mechanism contacts the photoelectric sensor switch, and the travel switch is used to control the lower corner of the cover plate to disengage from the slide groove; a cover plate reinforcement rib is installed on the outside of the cover plate, and the flip gear is fixed on the combination of the cover plate reinforcement rib and the cover plate.

2. The automatic opening sealed door device according to claim 1, characterized in that: There are two transmission gears, flip racks and flip gears. The two transmission gears are respectively installed on the inner side of the corresponding pulley bracket, the two flip racks are symmetrically fixed on the inner side of the frame, and the two flip gears are symmetrically fixed on the outer side of the cover.

3. The automatic opening sealed door device according to claim 2, characterized in that: The pulley bracket is composed of a U-shaped bracket and a V-shaped bracket, the first side of the V-shaped bracket is fixedly connected to the open end of the U-shaped bracket, the transmission gear is installed on the second side of the V-shaped bracket, and the free end of the second side of the V-shaped bracket is hinged on the outer side of the cover plate.

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