Washing equipment for lead frame production

Abstract

The invention relates to the technical field of lead frame production, in particular to washing equipment for lead frame production. Comprising an ultrasonic cleaning machine, a main plate and an auxiliary plate, the main plate and the auxiliary plate are both located in the ultrasonic cleaning machine, a top plate is fixedly connected to the upper portion between the main plate and the auxiliary plate, and a bottom plate is jointly connected to the lower side of the main plate and the lower side of the auxiliary plate in a limiting and sliding mode; the opposite sides of the main plate and the auxiliary plate are fixedly connected with a plurality of bearing pieces and a plurality of supporting pieces respectively, the number of the bearing pieces and the number of the supporting pieces are equal, the bearing pieces and the supporting pieces are evenly distributed at equal intervals, and bearing parts are arranged on the upper sides of the bearing pieces. One end of the lead frame is lifted upwards through swinging of the supporting piece, on one hand, the contact positions of the bearing piece and the supporting piece and the lead frame are changed, on the other hand, the lead frame is in an inclined state, metal scraps on the surface of the lead frame can slide off conveniently, and then the washing effect on the lead frame is guaranteed; and the product reliability and service life are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lead frame production, and particularly relates to a water washing equipment for lead frame production. BACKGROUND

[0002] The main purpose of lead frame water washing is to completely remove the electroplating residual liquid, oil stains, dust and other pollutants on the surface of the lead frame to ensure that the frame reaches the required cleanliness standard. A clean surface can significantly improve the packaging bonding strength and the reliability of long-term use of the product, which is a key step to ensure the overall packaging quality. During the water washing process, the lead frame is uniformly placed in a special carrying box and immersed in an ultrasonic cleaning machine for cleaning. The process generally includes the use of cleaning liquid and clean water in sequence to effectively remove metal chips, flux and other dirt attached to the surface of the frame through ultrasonic cavitation. However, since the box physically blocks the lower edge of the lead frame during cleaning, this area is prone to become a blind area for cleaning, which makes it difficult to completely remove the residual pollutants. Unremoved pollutants (such as metal chips or chemical residues) are prone to cause poor bonding between the frame and the packaging material in subsequent processes, which reduces the bonding strength and even causes problems such as delamination, corrosion or electrical failure after packaging, ultimately affecting the reliability and service life of the product. SUMMARY

[0003] The present application provides a water washing equipment for lead frame production to overcome the shortcomings that there is a blind area on the surface of the lead frame when the lead frame is cleaned in the prior art, which makes it difficult to completely remove the pollutants on the surface of the lead frame.

[0004] The technical implementation scheme of the present application is as follows: a water washing equipment for lead frame production, comprising: an ultrasonic cleaning machine, a main plate and a vice plate, the main plate and the vice plate are located in the ultrasonic cleaning machine, a top plate is fixedly connected between the main plate and the vice plate, a bottom plate in contact with the ultrasonic cleaning machine is slidably connected to the lower side of the main plate and the vice plate, a plurality of supporting pieces and a plurality of supporting pieces are respectively embedded in the opposite sides of the main plate and the vice plate, the number of the supporting pieces and the supporting pieces is equal and they are uniformly distributed at equal distances, a supporting part is arranged on the upper side of the supporting piece, the supporting part and the supporting part are used for supporting the lead frame, the supporting part is fixedly connected with a main fixed clamp, all the main fixed clamps are detachably connected with a main series link connected with the vice plate, the main series link is fixedly connected with the bottom plate, and a power mechanism for controlling the swinging of the supporting part to change the supporting position of the supporting piece and the supporting piece to the lead frame is arranged on the bottom plate.

[0005] Further, the power mechanism comprises two L-shaped members, a main liquid bag and two auxiliary liquid bags, the two L-shaped members are slidably connected to the bottom plate and respectively contact with the main plate and the auxiliary plate, for keeping the distance between the main plate, the auxiliary plate and the bottom plate unchanged, the main liquid bag is fixedly connected to the bottom plate, the auxiliary liquid bag is fixedly connected to the bottom plate and connected to the adjacent L-shaped member, the auxiliary liquid bag is communicated with the main liquid bag through a conduit, the main liquid bag and the auxiliary liquid bag store damping liquid, and the bottom plate is provided with a regulating assembly for regulating the flow rate of the damping liquid delivered from the main liquid bag to the auxiliary liquid bag.

[0006] Further, the elastic coefficient of the main liquid bag is greater than that of the auxiliary liquid bag.

[0007] Further, the regulating assembly comprises a U-shaped member and an adjusting screw, the U-shaped member is slidably connected to the bottom plate, for extruding the conduit between the main liquid bag and the auxiliary liquid bag, the adjusting screw is slidably connected to the U-shaped member and threadedly connected to the bottom plate, and the adjusting screw is used for controlling the relative position between the U-shaped member and the bottom plate.

[0008] Further, the upper side of the supporting part is provided with uniformly distributed grooves.

[0009] Further, the supporting part and the supporting part are coated with a chromium nitride coating to improve the surface hardness and smoothness.

[0010] Further, the supporting member is provided with a swing part, the swing part is fixedly connected with a secondary fixing clamp, the secondary fixing clamp is limitingly and slidably connected with the main plate, the secondary fixing clamp is used to drive the swing part to move to swing the supporting part to an inclined state, and the main plate is provided with a transmission assembly for providing power for the movement of the secondary fixing clamp.

[0011] Further, the transmission assembly comprises a secondary series link and a swing plate, the secondary series link is detachably connected to all the secondary fixing clamps and slidably connected to the main plate, the swing plate is hingedly connected to the lower part of the secondary series link, the swing plate contacts with the main plate and forms a lever, and the swing plate contacts with the bottom plate.

[0012] Further, the supporting member is provided with a convex rib part, the convex rib part, the supporting part and the swing part are connected in sequence, and the convex rib part is provided with equidistantly and uniformly distributed slag discharge holes near the position of the auxiliary plate.

[0013] Further, the position of the swing part away from the supporting part and the position of the swing arm part away from the supporting part are arc-shaped, for improving the bending strength of the swing arm part and the swing part.

[0014] The beneficial effects produced by the above technical solutions are as follows: 1、The present application uses the swing of the support to lift one end of the lead frame upwards, which changes the contact position of the support and the lead frame, and makes the lead frame in an inclined state, so as to facilitate the metal debris on the surface of the lead frame to slide off, thereby ensuring the washing effect of the lead frame and improving the product reliability and service life.

[0015] 2、The recess of the support part reduces the contact area between the support part and the lead frame, facilitating the falling off of the metal debris on the lower side of the lead frame, and the recess on the support part can push the lead frame to move when the support part swings, so that the lead frame is positioned at the limit position on the surface of the support part, facilitating the feeding of the washed lead frame.

[0016] 3、The swing of the support part makes the support part in an inclined state, so that the metal debris and other pollutants are guided to slide down through the support part and the inclined lead frame, facilitating the cleaning liquid and clean water to carry the pollutants away from the lead frame and the support, and improving the cleaning efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a schematic diagram of the three-dimensional structure of the present application; Figure 2 is a schematic diagram of the three-dimensional structure of the present application in an inclined state of the support and the support part; Figure 3 is a schematic diagram of the three-dimensional structure of the present application in a horizontal state of the support and the support part; Figure 4 is a schematic diagram of the three-dimensional structure of the main plate and the auxiliary plate of the present application; Figure 5 is a schematic diagram of the three-dimensional structure of the bottom plate and the support of the present application; Figure 6 is a schematic diagram of the three-dimensional structure of the support and the main fixing clamp of the present application; Figure 7 is a schematic diagram of the three-dimensional structure of the bottom plate and the main liquid bag of the present application; Figure 8 is a schematic diagram of the three-dimensional structure of the bottom plate and the support of the present application; Figure 9 is a schematic diagram of the three-dimensional structure of the support and the auxiliary series link of the present application; Figure 10 is a schematic diagram of the three-dimensional structure of the bottom plate and the swing plate of the present application.

[0018] In the figure: 1, ultrasonic cleaning machine, 2, main plate, 3, auxiliary plate, 4, top plate, 5, bottom plate, 6, supporting piece, 601, supporting part, 602, swing part, 603, convex rib part, 604, residue discharging hole, 7, supporting piece, 701, supporting part, 702, swing arm part, 8, main fixed clamp, 9, main series link, 10, L-shaped piece, 11, main liquid bag, 12, auxiliary liquid bag, 13, U-shaped piece, 14, adjusting bolt, 15, auxiliary fixed clamp, 16, auxiliary series link, 17, swing plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples.

[0020] Example 1

[0021] The present embodiment discloses a kind of washing equipment for lead frame production, to reduce lead frame cleaning blind area, improve the cleaning efficiency of lead frame.

[0022] Referring to Figures 1 to 6 A kind of washing equipment for lead frame production, including: ultrasonic cleaning machine 1, main plate 2 and auxiliary plate 3, ultrasonic cleaning machine 1 is existing equipment, additional display is not done in drawing, main plate 2 and auxiliary plate 3 are located in ultrasonic cleaning machine 1, and the cleaning fluid or water in ultrasonic cleaning machine 1 is over main plate 2 and auxiliary plate 3;The upper part between main plate 2 and auxiliary plate 3 is fixed with top plate 4 by bolt, the middle part of the upper side of top plate 4 is provided with handle, the lower side of main plate 2 and auxiliary plate 3 is jointly limited sliding connection with bottom plate 5, bottom plate 5 is contacted with the bottom in ultrasonic cleaning machine 1, the opposite side of main plate 2 and auxiliary plate 3 is provided with equal number and equidistantly evenly distributed recess, main plate 2 and auxiliary plate 3 are respectively embedded with supporting piece 6 and supporting piece 7 through the recess on it, the number of supporting piece 6 and supporting piece 7 is determined according to the height of main plate 2 and auxiliary plate 3, which is not additionally limited here;The upper side of supporting piece 6 is provided with supporting part 601, supporting piece 7 is provided with supporting part 701 and swing arm part 702, the cross section of supporting piece 7 is not closed triangle, supporting piece 7 is elastic metal material, and the thickness of the left part of supporting part 701 on supporting piece 7, the connecting place of supporting part 701 and swing arm part 702 and the connecting place of swing arm part 702 and main fixed clamp 8 is less than the thickness of the rest position of supporting piece 7, so that supporting piece 7 can be bent and deformed at the left part of supporting part 701, the connecting place of supporting part 701 and swing arm part 702 and the connecting place of swing arm part 702 and main fixed clamp 8 when subjected to external force;Supporting part 601 and supporting part 701 are used for bearing lead frame, in initial time (the state of main plate 2 and auxiliary plate 3 when not being put into ultrasonic cleaning machine 1 is defined as initial state, i.e. except Figure 1 And Figure 2The upper side of the supporting part 701 and the supporting part 601 are coplanar (as shown in the state shown in the accompanying drawings), the swing arm part 702 is fixedly connected with the main fixed clamps 8, the main fixed clamps 8 on the same swing arm part 702 can be two, and the main series connection rod 9 is the same; the main fixed clamps 8 in the same column are jointly and detachably connected with the main series connection rod 9 which is in sliding connection with the auxiliary plate 3, the lower part of the main series connection rod 9 penetrates through the auxiliary plate 3 and is fixedly connected with the bottom plate 5, and the bottom plate 5 is provided with a power mechanism for controlling the swing of the supporting part 701 to change the supporting position of the lead frame by the supporting part 7 and the supporting part 6.

[0023] The above arrangement can realize that, by the swing of the supporting part 7, one end of the lead frame is lifted upward, on the one hand, the position of the supporting part 7 and the supporting part 6 in contact with the lead frame is changed, on the other hand, the lead frame is in an inclined state, which facilitates the metal scraps on the surface of the lead frame to slide off, thereby ensuring the water washing effect of the lead frame and improving the product reliability and service life.

[0024] It should be noted that all parts in the present application except the ultrasonic cleaning machine 1 jointly constitute the lead frame box; in this paper, the view angle is taken as an example for description. Figure 2

[0025] Referring to Figures 2 to 4 and Figure 7 , the power mechanism comprises two L-shaped parts 10, a main liquid bag 11 and two auxiliary liquid bags 12, the two L-shaped parts 10 are both in sliding connection with the bottom plate 5 and are in contact with the main plate 2 and the auxiliary plate 3 respectively, for keeping the distance between the main plate 2 and the auxiliary plate 3 and the bottom plate 5 unchanged, the lower side of the bottom plate 5 is provided with a rectangular recess, the main liquid bag 11 is fixedly connected in the rectangular recess of the bottom plate 5 by means of adhesion, and the area of the main liquid bag 11 in horizontal projection is smaller than the area of the rectangular recess of the bottom plate 5 in horizontal projection, at the beginning, the lower side of the main liquid bag 11 is below the bottom plate 5; the auxiliary liquid bag 12 is fixedly connected in the bottom plate 5 and is fixedly connected with the adjacent L-shaped part 10, the auxiliary liquid bag 12 is in communication with the main liquid bag 11 through a conduit, the main liquid bag 11 and the auxiliary liquid bag 12 both store damping liquid, and the bottom plate 5 is provided with a control assembly for controlling the flow rate of the damping liquid delivered from the main liquid bag 11 to the auxiliary liquid bag 12; the elastic coefficient of the main liquid bag 11 is greater than the elastic coefficient of the auxiliary liquid bag 12.

[0026] Referring to Figure 3 and Figure 7 ​The regulating assembly comprises a U-shaped piece 13 and an adjusting bolt 14, the U-shaped piece 13 is slidingly connected in the bottom plate 5, used to extrude the conduit between the main liquid bag 11 and the auxiliary liquid bag 12, to control the flow area of the conduit between the main liquid bag 11 and the auxiliary liquid bag 12, and further control the flow rate of the damping liquid; the adjusting bolt 14 is slidingly connected with the U-shaped piece 13 and is threadedly connected with the bottom plate 5, the adjusting bolt 14 is used to control the relative position of the U-shaped piece 13 and the bottom plate 5; initially, the U-shaped piece 13 completely blocks the conduit between the main liquid bag 11 and the auxiliary liquid bag 12, and the main liquid bag 11 and the auxiliary liquid bag 12 are both in a completely unfolded but not inflated state (i.e. the main liquid bag 11 and the auxiliary liquid bag 12 do not have elastic deformation).

[0027] The washing process of the lead frame: first, place the material box in the initial state on the discharging equipment of the lead frame processing production line, and place the same specification of lead frames to be cleaned in the material box in sequence through the discharging equipment, so that the left and right parts of the lead frame are respectively arranged on the supporting part 701 and the supporting part 701; the adjusting bolt 14 is rotated by using a tool to adjust the flow area of the conduit between the main liquid bag 11 and the auxiliary liquid bag 12, so as to control the time when the supporting part 7 starts to act, and further control the timing of the supporting part 601 and the supporting part 701 switching the supporting position of the lead frame, that is, when the material box and the lead frame are placed in the ultrasonic cleaner 1, the supporting part 601 and the supporting part 701 are in contact with the lower side of the lead frame to provide support for the lead frame, and when the lead frame is cleaned in the ultrasonic cleaner 1 for a period of time (here, the period of time refers to the time interval from when the lead frame is placed in the ultrasonic cleaner 1 to when the supporting part 7 starts to act), the supporting part 7 starts to act and makes the lead frame inclined, so that the supporting part 601 and the supporting part 701 are in contact with the lower side edges of the lead frame, thereby switching the supporting position of the lead frame by the supporting part 601 and the supporting part 701, and improving the uniformity of the lead frame washing.

[0028] The material box containing the lead frame is placed in the ultrasonic cleaner 1, and in this process, the main liquid bag 11 first contacts the ultrasonic cleaner 1, and the main liquid bag 11 is deformed and completely enters the rectangular recess of the bottom plate 5 under the extrusion of the gravity of the material box, in this state, the main liquid bag 11 is affected by its own elastic force, slowly conveying the damping liquid in it to the two auxiliary liquid bags 12 through the conduit, so that the auxiliary liquid bags 12 are inflated and push the two L-shaped pieces 10 away from each other.

[0029] After placing the material box into the ultrasonic cleaner 1, cleaning fluid is prepared in the ultrasonic cleaner 1 until it completely covers the top plate 4. At this time, the ultrasonic cleaner 1 is turned on to clean the lead frame. During the cleaning process, as the damping fluid in the main liquid bladder 11 is gradually injected into the auxiliary liquid bladder 12 through the conduit, the L-shaped part 10 moves slowly and the contact area with the main plate 2 and the auxiliary plate 3 gradually decreases. Finally, when the two L-shaped parts 10 completely lose contact with the main plate 2 and the auxiliary plate 3 respectively, the main plate 2, the auxiliary plate 3, the top plate 4 and the lead frame on it move downward relative to the bottom plate 5 under their own gravity. Since the main connecting rod 9 is fixed to the bottom plate 5, the main connecting rod 9 and the main fixing clamp 8 remain stationary during this process. The swing arm 702 swings counterclockwise around its connection with the adjacent main fixing clamp 8 (see attached diagram). Figure 2 The main view is a rotating perspective. The support 701 swings counterclockwise around its left edge, causing bending deformation at the connection between the swing arm 702 and the adjacent main fixing clamp 8, the left side of the support 701, and the connection between the support 701 and the swing arm 702. This causes the support 701 to change from a horizontal to an inclined state, and the horizontal height of each point on the support 701 is greater than the horizontal height of the support 601. This makes the entire lead frame tend to be inclined, resulting in an angle between the support 601 and the support 701 and the lead frame. That is, the lead frame changes from contacting the lower side to contacting the left and right edges. This changes the supported position of the lead frame, making the cleaning of the lead frame more complete, and the inclined lead frame makes it easier for metal debris to fall off.

[0030] After cleaning the lead frame with cleaning fluid and water in sequence, the ultrasonic cleaner 1 is stopped, and the material box is lifted out by the handle. During the lifting of the material box, the steps of moving the main board 2, sub-board 3, and top plate 4 relative to the bottom plate 5 are repeated in reverse to restore the shape of the support 7. After the main board 2, sub-board 3, and top plate 4 are reset relative to the bottom plate 5, the main board 2, sub-board 3, and top plate 4 drive the bottom plate 5 to move upward, so that the bottom plate 5 and the main liquid bladder 11 lose contact with the ultrasonic cleaner 1. Under the elastic action of the main liquid bladder 11 and the sub-liquid bladder 12, the damping fluid in the sub-liquid bladder 12 is delivered to the main liquid bladder 11 through the conduit, and the L-shaped part 10 gradually resets, thus completing a single cleaning process.

[0031] Example 2

[0032] This embodiment is a further optimization based on embodiment 1, providing a function for positioning the lead frame, which facilitates the loading of the lead frame after washing.

[0033] The material box in the prior art not only carries the lead frame during the water washing process, but also is used to carry the lead frame for transfer between different processes. That is, an upper feeding mechanism is arranged at the initial end of the process for transferring the lead frame from the material box to the equipment, and a lower feeding mechanism is arranged at the end of the process for transferring the lead frame from the equipment to the material box. In addition, the positioning accuracy of the lead frame has strict requirements in the processing process of the lead frame. Therefore, the prior art adopts a special active positioning mechanism to position the lead frame during the feeding process. However, the present application actively positions the lead frame during the water washing process, which is convenient for simplifying the positioning operation of the subsequent equipment and eliminating the use of the active positioning mechanism in the subsequent process, thereby saving costs.

[0034] Referring to Figures 4 to 6 , the upper side of the support part 701 is provided with uniformly distributed grooves; the support part 701 and the supporting part 601 are coated with a chromium nitride coating to improve the surface hardness and smoothness.

[0035] The above arrangement can achieve that, on the one hand, the grooves of the support part 701 reduce the contact area between the support part 701 and the lead frame, facilitating the falling off of the metal debris on the lower side of the lead frame, and on the other hand, when the support part 701 swings, the grooves thereon can push the lead frame to move, so that the lead frame moves to the limit position on the surface of the supporting part 601. In this way, the lead frame is positioned, which is convenient for feeding the lead frame after water washing.

[0036] Embodiment 3

[0037] This embodiment is further optimized on the basis of embodiment 2.

[0038] Referring to Figures 2 to 4 , Figure 8 and Figure 9 , the supporting part 6 is provided with a swing part 602, the swing part 602 is fixedly connected with a secondary fixed clamp 15, the secondary fixed clamp 15 can be two symmetrically distributed ones, and a secondary series connection rod 16 is the same; the secondary fixed clamp 15 is in limiting sliding connection with the main plate 2, and the secondary fixed clamp 15 is used to drive the swing part 602 to move so that the supporting part 601 swings to the inclined state, and the main plate 2 is provided with a transmission assembly for providing power for the movement of the secondary fixed clamp 15.

[0039] Referring to Figures 8 to 10 , the transmission assembly comprises: a secondary series connection rod 16 and a swing plate 17, the secondary series connection rod 16 is detachably connected to all the secondary fixed clamps 15 in the same column and is in sliding connection with the main plate 2, the swing plate 17 is hinged to the lower part of the secondary series connection rod 16, the swing plate 17 is in contact with the main plate 2 and forms a lever, and the swing plate 17 is in contact with the bottom plate 5.

[0040] Referring to Figure 8 and Figure 9The left part of the upper side of the supporting piece 6 is provided with a convex rib part 603, the convex rib part 603, the supporting part 601 and the swing part 602 are sequentially connected, the convex rib part 603 is used for limiting the limit position of the lead frame moving to the left on the supporting part 601, the supporting piece 6 is of an elastic metal material, and the thicknesses of the connecting positions of the supporting part 601 and the convex rib part 603, the connecting positions of the supporting part 601 and the swing part 602 and the connecting positions of the swing part 602 and the adjacent auxiliary fixed clamps 15 on the supporting piece 6 are all less than the thicknesses of the remaining positions on the supporting piece 6, so that the supporting piece 6 can be bent and deformed at the connecting positions of the supporting part 601 and the convex rib part 603, the connecting positions of the supporting part 601 and the swing part 602 and the connecting positions of the swing part 602 and the adjacent auxiliary fixed clamps 15 when the supporting piece 6 is subjected to external force; the right part of the convex rib part 603 is provided with a row of slag holes 604 which are uniformly distributed at equal intervals; and the lower left part of the swing part 602 and the lower part of the swing arm part 702 are both arc-shaped, so as to improve the bending strength of the swing arm part 702 and the swing part 602.

[0041] The above arrangement can realize that the supporting part 601 is in an inclined state by swinging, so that the pollutants such as metal scraps are guided to slide down by the supporting part 601 and the inclined lead frame, the pollutants are taken away from the lead frame and the material box by the cleaning liquid and the clean water, and the cleaning efficiency is improved.

[0042] In the process of moving downward of the main plate 2, the auxiliary plate 3 and the top plate 4 relative to the bottom plate 5, the main plate 2 and the bottom plate 5 jointly extrude the swing plate 17, so that the swing plate 17 swings and drives the auxiliary series link 16 to move downward relative to the main plate 2, the auxiliary series link 16 drives the lower parts of all the swing parts 602 to move downward through the auxiliary fixed clamps 15, the connecting positions of the swing parts 602 and the adjacent auxiliary fixed clamps 15, the connecting positions of the swing parts 602 and the supporting parts 601 and the connecting positions of the supporting parts 601 and the convex rib parts 603 are all bent and deformed, so that the included angle between the swing part 602 and the supporting part 601 is increased, and the supporting part 601 swings clockwise, until the swing plate 17 finally swings to a horizontal state, the main plate 2 contacts the bottom plate 5 and stops moving downward, at this time, the supporting part 601 changes from horizontal to inclined state, so as to facilitate the metal scraps on the upper side of the supporting part 601 to slide down.

[0043] In the process of ending water washing and taking out the material box through the handle, first, the main plate 2 moves upward relative to the bottom plate 5, so that the distance between the two is increased, the supporting piece 6 gradually recovers under the action of its own elastic force, reversely repeats the above steps of moving downward of the auxiliary fixed clamps 15 relative to the main plate 2, so that the supporting piece 6, the auxiliary fixed clamps 15, the auxiliary series link 16 and the swing plate 17 are all reset relative to the main plate 2.

[0044] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A water washing apparatus for lead frame production, characterized by, The utility model relates to an ultrasonic cleaning machine, which comprises a main plate (2) and a sub plate (3) located in the ultrasonic cleaning machine (1), a top plate (4) fixedly connected between the main plate (2) and the sub plate (3), a bottom plate (5) in contact with the ultrasonic cleaning machine (1) and slidably connected to the lower side of the main plate (2) and the sub plate (3), a plurality of supporting members (7) and a plurality of supporting members (7) embedded in the opposite sides of the main plate (2) and the sub plate (3), respectively, wherein the number of the supporting members (6) and the supporting members (7) is equal and they are uniformly distributed at equal intervals, the upper side of the supporting member (6) is provided with a supporting part (601), the supporting member (7) is provided with a supporting part (701) and a swing arm part (702), the supporting part (601) and the supporting part (701) are used for carrying the lead frame, the swing arm part (702) is fixedly connected with a main fixed clamp (8), all the main fixed clamps (8) are detachably connected with a main serial link (9) slidably connected with the sub plate (3), the main serial link (9) is fixedly connected with the bottom plate (5), and the bottom plate (5) is provided with a power mechanism for controlling the swing of the supporting part (701) to change the supporting position of the supporting member (6) and the supporting member (7) on the lead frame. The power mechanism comprises two L-shaped members (10), a main liquid bag (11) and two sub liquid bags (12), wherein the two L-shaped members (10) are slidably connected in the bottom plate (5) and are in contact with the main plate (2) and the sub plate (3), respectively, for keeping the distance between the main plate (2), the sub plate (3) and the bottom plate (5) unchanged, the main liquid bag (11) is fixedly connected in the bottom plate (5), the sub liquid bag (12) is fixedly connected in the bottom plate (5) and is fixedly connected with the adjacent L-shaped member (10), the sub liquid bag (12) is communicated with the main liquid bag (11) through a conduit, the main liquid bag (11) and the sub liquid bag (12) store damping liquid, and the bottom plate (5) is provided with a control assembly for controlling the flow rate of the damping liquid delivered from the main liquid bag (11) to the sub liquid bag (12).

2. A water washing apparatus for lead frame production according to claim 1, characterized by, The elastic coefficient of the main liquid bag (11) is greater than that of the sub liquid bag (12). The control assembly comprises a U-shaped member (13) and an adjusting bolt (14), wherein the U-shaped member (13) is slidably connected in the bottom plate (5) for extruding the conduit between the main liquid bag (11) and the sub liquid bag (12), the adjusting bolt (14) is slidably connected with the U-shaped member (13) and is threadedly connected with the bottom plate (5), and the adjusting bolt (14) is used for controlling the relative position of the U-shaped member (13) and the bottom plate (5).

3. A water washing apparatus for lead frame production according to claim 2, characterized by, The upper side of the supporting part (701) is provided with uniformly distributed grooves.

4. A water washing apparatus for lead frame production according to claim 2, characterized by, The supporting part (701) and the supporting part (601) are coated with a chromium nitride coating to improve the surface hardness and smoothness. ​ 5. The water washing apparatus for producing a lead frame according to claim 1, wherein ​ 6. A water washing apparatus for lead frame production according to claim 5, wherein ​ 7. A water washing apparatus for lead frame production according to claim 1, wherein The supporting piece (6) is provided with a swing part (602), the swing part (602) is fixedly connected with a secondary fixing clamp (15), the secondary fixing clamp (15) is in limiting sliding connection with the main plate (2), the secondary fixing clamp (15) is used for driving the swing part (602) to move to make the supporting part (601) swing to an inclined state, and the main plate (2) is provided with a transmission assembly for providing power for the movement of the secondary fixing clamp (15).

8. A water washing apparatus for lead frame production according to claim 7, wherein The transmission assembly comprises: A secondary series link (16) and a swing plate (17), the secondary series link (16) is detachably connected with all the secondary fixing clamps (15) and is in sliding connection with the main plate (2), the swing plate (17) is hinged to the lower part of the secondary series link (16), the swing plate (17) is in contact with the main plate (2) and constitutes a lever, and the swing plate (17) is in contact with the bottom plate (5).

9. A water washing apparatus for lead frame production according to claim 7, wherein The supporting piece (6) is provided with a convex rib part (603), the convex rib part (603), the supporting part (601) and the swing part (602) are sequentially connected, and the convex rib part (603) is provided with equidistantly and uniformly distributed deslagging holes (604) near the position of the secondary plate (3).

10. A water washing apparatus for lead frame production according to claim 9, wherein The position, away from the supporting part (601), of the swing part (602) and the position, away from the supporting part (701), of the swing arm part (702) are both arc-shaped, so that the bending strength at the swing arm part (702) and the swing part (602) is improved.

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