Method for realizing local electroplating / chemical plating through corrosion-resistant glue isolation

Abstract

The invention discloses a method for achieving local electroplating / chemical plating through corrosion-resistant glue isolation, and belongs to the technical field of electroplating / chemical plating. The method comprises the following steps that corrosion-resistant glue is adopted, and the prepared corrosion-resistant glue is guided into a glue dispenser; injecting glue into the inner cavity of the product by using a dispensing machine to form an electroplating shielding area; and standing the product with the electroplating shielding area at normal temperature for two hours, or baking the product in an oven for half an hour, and carrying out electroplating / chemical plating after the corrosion-resistant glue is solidified. According to the method, the corrosion-resistant glue is injected into the inner cavity of the product, only the needed part is electroplated, the inner cavity is kept in an unplated state, local electroplating can be achieved, the corrosion-resistant glue is used as a material, it is guaranteed that the cost is low, the method can be suitable for large-scale production, the corrosion-resistant glue is injected into the cavity of the product through a glue dispenser, operation is easy, and use is easy.

Description

Technical Field

[0001] The invention relates to the technical field of electroplating / chemical plating, and in particular to a method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation. Background Art

[0002] Local electroplating technology is a technology that electroplates metal coatings only in specific areas. It has the advantages of high precision, high efficiency, material saving and environmental protection, so it is widely used in various industrial fields. The principle of local electroplating technology is to use the limiting effect of the barrier layer or mold to expose the area that only needs to be electroplated to the electroplating solution, while blocking other areas. Usually this method can be achieved through a variety of processes.

[0003] The existing local electroplating processes mainly include masking process technology and barrier layer technology. The masking process uses special materials such as glue or electroplating tape to mask the areas that do not need to be electroplated. This method has high requirements on the selection and stability of masking materials and is not suitable for large-scale production. The barrier layer refers to the coating of barrier materials on the area that needs to be protected to prevent the entry of the electroplating solution. However, due to the high requirements for the selection of barrier materials and the coating process, the requirements for personnel skills and equipment are high, resulting in difficult operation and high costs.

[0004] Therefore, the present invention proposes a new electroplating / chemical plating selective plating process which is suitable for large-scale production and has simple operation and low cost. Summary of the invention

[0005] The present invention proposes a method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation, which solves the problem of internal cavity blooming and metal particles appearing inside the cavity when the product is nickel-plated / chemically plated once by effectively realizing local electroplating / chemical plating.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: A method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation, comprising the following steps: (1) Use corrosion-resistant glue A and B glue, mix them in a 1:1 ratio, and introduce the prepared corrosion-resistant glue into the glue dispensing machine; (2) Use a dispensing machine to inject glue into the inner cavity of the product to form an electroplating shielding area; (3) Leave the product with electroplating shielding area at room temperature for two hours, or bake it in an oven at 150° for half an hour. After the corrosion-resistant glue solidifies, electroplating / chemical plating can be carried out. Put the electroplated / chemically plated product into the oven, bake it at 300° for 45 minutes, then take out the corrosion-resistant glue and proceed to the subsequent process Wherein, the product comprises a rectangular product body, and a plurality of inner cavities are evenly distributed longitudinally on the upper surface of the product body.

[0007] Among them, step (2) is specifically as follows: using a dispensing machine to inject the corrosion-resistant glue into the inner cavity of the product, and the amount of the corrosion-resistant glue injected before solidification is flush with the upper frame surface of the inner cavity of the product. After solidification, the corrosion-resistant glue cannot be higher than the upper frame surface of the cavity, so as to avoid that the upper frame surface cannot be fully electroplated during electroplating, and the middle of the corrosion-resistant glue will be concave after solidification.

[0008] However, the above-mentioned glue injection method uses corrosion-resistant glue to be injected into the inner cavity of the product for shielding. Since the glue needs to be filled to be flush with the outer plane of the product, rather than just coating and shielding the inner wall of the inner cavity, more glue liquid is required, which invisibly causes cost loss. In addition, when cleaning the hardened glue inside the inner cavity later, due to the excessive amount of glue and the solid center, it takes a lot of energy to complete the cleaning work. Therefore, this processing method has the defects of increasing costs and reducing production efficiency. For this reason, the present application designs a second glue injection method, which is specifically: The first inner cavity near one end of the product body is injected with corrosion-resistant glue through the dispensing head of the glue dispensing machine. When the second inner cavity is injected with glue through the dispensing head, the glue filling head of the glue dispensing machine extracts the uncured corrosion-resistant glue at the center of the first inner cavity and fills it into the second inner cavity. The glue on the side of the first inner cavity continues to be attached to the inner cavity for masking, and so on.

[0009] Wherein, the injection amount of the corrosion-resistant glue before extraction is flush with the upper frame surface of the inner cavity of the product.

[0010] The glue dispensing machine comprises a base, the upper part of the base is respectively connected to a glue dispensing platform and a rack in longitudinal sliding manner, the surface of the rack is connected to a traverse seat in transverse sliding manner, the front of the traverse seat is connected to a lifting seat in vertical sliding manner, and a glue dispensing assembly is arranged on the surface of the lifting seat; The dispensing assembly comprises a fixed plate fixedly mounted on the surface of the lifting seat, a hydraulic rod is embedded on the surface of the fixed plate, a lifting plate is fixedly mounted on the telescopic end of the hydraulic rod, a first connecting column and a second connecting column are respectively arranged at the bottom end of the lifting plate, a glue filling head and a glue dispensing head are respectively arranged at the bottom end of the first connecting column, a fixing ring is fixedly mounted on the surface of the first connecting column, a glue filling cylinder and a glue dispensing cylinder are symmetrically fixedly mounted on the left and right sides of the upper surface of the fixing ring, the inner cavity of the glue dispensing cylinder is connected to the glue dispensing head through a glue dispensing tube, and the right side of the lifting seat is fixed A glue storage box is fixedly installed, and the glue storage box is connected to the inner cavity of the glue dispensing cylinder through a conveying pipe. A glue extraction head is arranged at the bottom end of the second connecting column. The inner cavity of the glue replenishing cylinder is connected to the glue extraction head through the glue extraction tube, and the inner cavity of the glue replenishing cylinder is connected to the glue replenishing head through the glue replenishing tube. The inner cavities of the glue dispensing cylinder and the glue replenishing cylinder are both slidably installed with piston plates, and a piston rod is fixedly installed at the bottom end of the piston plate. The bottom end of the piston rod extends to the bottom of the fixed ring and is fixedly installed with a collision ring. The glue dispensing head and the glue replenishing head both correspond to the center hole position of the collision ring.

[0011] Among them, the surfaces of the dispensing tube and the conveying tube are both provided with a first one-way valve, and the total conveying direction of the two first one-way valves is from the glue storage box to the dispensing head, and the surfaces of the glue extraction tube and the glue filling tube are both provided with a second one-way valve, and the total conveying direction of the two second one-way valves is from the glue extraction head to the glue filling head.

[0012] Wherein, a return spring is sleeved on the surface of the piston rod, and the bottom end and the top end of the return spring are respectively pressed tightly against the top surface of the collision ring and the bottom surface of the fixing ring.

[0013] Wherein, a travel switch is arranged on the upper surface of the collision ring, a trigger end of the travel switch corresponds to the position of the lower surface of the fixing ring, and the travel switch is electrically connected with the hydraulic rod.

[0014] Wherein, an electric heating ring is embedded at the bottom end of the collision ring.

[0015] Among them, a limiting slide rail is fixedly installed on the bottom end of the lifting plate, and the second connecting column is laterally slidably connected to the inside of the horizontal groove on the bottom side of the limiting slide rail, and the surface of the second connecting column is threadedly connected with a locking screw, and the front of the limiting slide rail is provided with an opening for the locking screw to slide. The second connecting column slides laterally in the inside of the horizontal groove at the bottom end of the limiting slide rail to adjust the distance between the rubber extraction head and the rubber filling head.

[0016] Among them, the surface of the base is rotatably connected with the first longitudinal screw and the second longitudinal screw, the dispensing table is threadedly connected to the first longitudinal screw, the rack is threadedly connected to the second longitudinal screw, and the back of the base is fixedly installed with the first servo motor and the second servo motor for driving the first longitudinal screw and the second longitudinal screw to rotate respectively.

[0017] Wherein, the surface of the frame is rotatably connected with a transverse screw, the transverse seat is threadedly connected with the transverse screw, and a third servo motor for driving the transverse screw to rotate is fixedly installed on the right side of the frame.

[0018] Wherein, the surface of the transverse shift seat is rotatably connected with a vertical screw rod, the lifting seat is threadedly connected with the vertical screw rod, and a fourth servo motor for driving the vertical screw rod to rotate is fixedly installed on the top of the transverse shift seat.

[0019] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: (1) The present invention can achieve local electroplating by injecting corrosion-resistant glue into the inner cavity of the product and only electroplating the required parts while keeping the inner cavity unplated. The material used is corrosion-resistant glue, which ensures low cost and applicability to large-scale production. The corrosion-resistant glue is injected into the cavity of the product using a glue dispenser, which is simple to operate and easy to use.

[0020] (2) The present invention also adopts a glue injection method for glue replenishment, which can achieve the advantage of reducing the amount of glue used and reducing costs. In addition, since the glue at the center of the inner cavity is sucked out to produce a large hollow depression, it is convenient for the subsequent cleaning of the solidified glue. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective and three-dimensional structural diagram of a glue dispensing device for selective electroplating proposed by the present invention; Figure 2 A schematic diagram of the three-dimensional structure from a second perspective of a glue dispensing device for selective electroplating proposed by the present invention; Figure 3 A schematic diagram of the three-dimensional structure of a dispensing device for selective electroplating proposed by the present invention from three viewing angles; Figure 4 for Figure 2 A schematic diagram of the enlarged structure in FIG.

[0022] In the figure: 1, base; 2, glue dispensing table; 3, frame; 4, horizontal shift seat; 5, lifting seat; 6, fixed plate; 7, hydraulic rod; 8, lifting plate; 9, first connecting column; 10, second connecting column; 11, glue filling head; 12, glue dispensing head; 13, fixing ring; 14, glue filling cylinder; 15, glue dispensing cylinder; 16, glue dispensing tube; 17, glue storage box; 18, delivery tube; 19, glue extraction head; 20, glue extraction tube; 21, glue filling tube; 22, piston plate; 23 , piston rod; 24, collision ring; 25, first one-way valve; 26, second one-way valve; 27, return spring; 28, travel switch; 29, limit slide rail; 30, locking screw; 31, first longitudinal screw; 32, second longitudinal screw; 33, first servo motor; 34, second servo motor; 35, transverse screw; 36, third servo motor; 37, vertical screw; 38, fourth servo motor; 39, product body; 40, inner cavity. DETAILED DESCRIPTION

[0023] The following embodiments are provided for a better understanding of the present invention, but are not limited to the best mode of implementation, and do not limit the content and protection scope of the present invention. Any product identical or similar to the present invention obtained under the inspiration of the present invention or by combining the features of the present invention with other prior arts shall fall within the protection scope of the present invention. Example 1

[0024] This embodiment provides a method for realizing local electroplating / isolating by corrosion-resistant adhesive, comprising the following steps: (1) Use corrosion-resistant glue A and B glue, mix them in a 1:1 ratio, and introduce the prepared corrosion-resistant glue into the glue dispensing machine; (2) Use a dispensing machine to inject glue into the inner cavity of the product to form a plating shielding area: Use a dispensing machine to inject the corrosion-resistant glue into the inner cavity 40 of the product. Before the corrosion-resistant glue solidifies, the injection amount should be flush with the upper frame surface of the inner cavity 40 of the product. After the corrosion-resistant glue solidifies, it cannot be higher than the upper frame surface of the cavity, so as to avoid the upper frame surface not being fully plated during electroplating. After solidification, the corrosion-resistant glue will be concave in the middle; (3) Leave the product with the electroplating shielding area at room temperature for two hours, or bake it in an oven at 150° for half an hour. After the corrosion-resistant glue solidifies, electroplating / chemical plating can be carried out; (4) Place the electroplated / chemically plated product in an oven and bake at 300° for 45 minutes. Then take out the corrosion-resistant glue and braze the product.

[0025] The product comprises a rectangular product body 39 , and a plurality of inner cavities 40 of the same shape are evenly distributed longitudinally on the upper surface of the product body 39 , and the inner cavities 40 are rectangular grooves. Example 2

[0026] This embodiment provides a method for realizing local electroplating / isolating by corrosion-resistant adhesive, comprising the following steps: (1) Use corrosion-resistant glue A and B glue, mix them in a 1:1 ratio, and introduce the prepared corrosion-resistant glue into the glue dispensing machine; (2) Use a glue dispenser to inject glue into the inner cavity 40 of the product to form an electroplating shielding area: the first inner cavity 40 near one end of the product body 39 is injected with corrosion-resistant glue through the glue dispenser head 12 of the glue dispenser. When the second inner cavity 40 is injected with glue through the glue dispenser head 12, the glue filling head 11 of the glue dispenser extracts the uncured corrosion-resistant glue at the center of the first inner cavity 40 and fills it into the second inner cavity 40. The glue on the side of the first inner cavity 40 continues to adhere to the inner cavity 40 for shielding, and so on. The amount of corrosion-resistant glue injected before extraction is flush with the upper frame surface of the inner cavity 40 of the product.

[0027] (3) Leave the product with the electroplating shielding area at room temperature for two hours, or bake it in an oven at 150° for half an hour. After the corrosion-resistant glue solidifies, electroplating / chemical plating can be carried out; (4) Place the electroplated / chemically plated product in an oven and bake at 300° for 45 minutes. Then take out the corrosion-resistant glue and braze the product.

[0028] Reference Figures 1 to 4 The glue dispensing machine of this embodiment includes a base 1, and the top of the base 1 is longitudinally slidably connected to a glue dispensing table 2 and a rack 3, and a control computer is arranged on the right side of the rack 3.

[0029] A product body 39 is mounted on the surface of the dispensing station 2 by means of a tooling clamp, and a plurality of inner cavities 40 are equidistantly provided on the surface of the product body 39 in a linear array.

[0030] The surface of the base 1 is rotatably connected with a first longitudinal screw 31 and a second longitudinal screw 32, the dispensing table 2 is threadedly connected to the first longitudinal screw 31, the rack 3 is threadedly connected to the second longitudinal screw 32, and the back of the base 1 is fixedly installed with a first servo motor 33 and a second servo motor 34 for driving the first longitudinal screw 31 and the second longitudinal screw 32 to rotate.

[0031] The product body 39 is installed on the surface of the dispensing table 2. The first servo motor 33 drives the first longitudinal screw 31 to rotate, which can drive the dispensing table 2 to move forward and backward to adjust the position of the product body 39. The second servo motor 34 drives the second longitudinal screw 32 to rotate, which can drive the frame 3 to move forward and backward. By cooperating with the two, the purpose of adjusting the longitudinal processing position of the dispensing device can be achieved.

[0032] The surface of the rack 3 is connected with a transverse seat 4 for transverse sliding.

[0033] A transverse screw rod 35 is rotatably connected to the surface of the carriage 3 , the transverse seat 4 is threadedly connected to the transverse screw rod 35 , and a third servo motor 36 for driving the transverse screw rod 35 to rotate is fixedly installed on the right side of the carriage 3 .

[0034] The front side of the transverse shift seat 4 is vertically slidably connected with a lifting seat 5, and a glue dispensing component is arranged on the surface of the lifting seat 5.

[0035] A vertical screw rod 37 is rotatably connected to the surface of the transverse shift seat 4 , the lifting seat 5 is threadedly connected to the vertical screw rod 37 , and a fourth servo motor 38 for driving the vertical screw rod 37 to rotate is fixedly installed on the top of the transverse shift seat 4 .

[0036] The third servo motor 36 drives the transverse screw 35 to rotate, which can drive the transverse shift seat 4 to move, adjust the position of the transverse shift seat 4, and further adjust and change the dispensing processing position.

[0037] The fourth servo motor 38 drives the vertical screw 37 to rotate, which can drive the lifting seat 5 to move vertically, and adjust the vertical movement range of the dispensing component to meet the needs of processing product bodies 39 of different thicknesses.

[0038] The dispensing assembly includes a fixed plate 6 fixedly mounted on the surface of a lifting seat 5, a hydraulic rod 7 is embedded on the surface of the fixed plate 6, a lifting plate 8 is fixedly mounted on the telescopic end of the hydraulic rod 7, and a first connecting column 9 and a second connecting column 10 are respectively provided at the bottom end of the lifting plate 8.

[0039] A glue filling head 11 and a glue dispensing head 12 are respectively provided at the bottom end of the first connecting column 9, a fixing ring 13 is fixedly installed on the surface of the first connecting column 9, and a glue filling cylinder 14 and a glue dispensing cylinder 15 are symmetrically fixedly installed on the left and right sides of the upper surface of the fixing ring 13, and the inner cavity of the glue dispensing cylinder 15 is connected with the glue dispensing head 12 through a glue dispensing tube 16. A glue storage box 17 is fixedly installed on the right side of the lifting seat 5, and the glue storage box 17 is connected to the inner cavity of the glue dispensing cylinder 15 through a conveying pipe 18.

[0040] A glue extraction head 19 is provided at the bottom end of the second connecting column 10, and the inner cavity of the glue filling cylinder 14 is connected with the glue extraction head 19 through the glue extraction tube 20, and the inner cavity of the glue filling cylinder 14 is connected with the glue filling head 11 through the glue filling tube 21. The inner cavities of the glue dispensing cylinder 15 and the glue filling cylinder 14 are both slidably installed with a piston plate 22, and the bottom end of the piston plate 22 is fixedly installed with a piston rod 23. The bottom end of the piston rod 23 extends to the bottom of the fixing ring 13 and is fixedly installed with a collision ring 24. The glue dispensing head 12 and the glue filling head 11 both correspond to the center hole position of the collision ring 24.

[0041] A first one-way valve 25 is provided on the surface of the glue dispensing tube 16 and the delivery tube 18, and the total delivery direction of the two first one-way valves 25 is from the glue storage box 17 to the glue dispensing head 12. A second one-way valve 26 is provided on the surface of the glue extraction tube 20 and the glue replenishment tube 21, and the total delivery direction of the two second one-way valves 26 is from the glue extraction head 19 to the glue replenishment head 11.

[0042] By setting the first one-way valve 25 and the second one-way valve 26, the flow direction of the glue can be restricted, and the glue inside the glue filling cylinder 14 and the glue dispensing cylinder 15 can be pumped out and the glue liquid can be replenished during the lifting and sliding of the piston plate 22.

[0043] A return spring 27 is sleeved on the surface of the piston rod 23 , and the bottom end and the top end of the return spring 27 are respectively pressed against the top surface of the collision ring 24 and the bottom surface of the fixing ring 13 .

[0044] A travel switch 28 is disposed on the upper surface of the collision ring 24 . The trigger end of the travel switch 28 corresponds to the position of the lower surface of the fixing ring 13 . The travel switch 28 is electrically connected to the hydraulic rod 7 .

[0045] By providing the stroke switch 28 , the extension amount of the hydraulic rod 7 can be controlled.

[0046] When performing the glue dispensing and masking action on the inner cavity 40 on the surface of the product body 39, the glue filling head 11 and the glue dispensing head 12 are pre-aligned with the positions of the inner cavity 40, and the glue extraction head 19 is aligned with the position of the previous inner cavity 40. Then, the hydraulic rod 7 is controlled to extend to drive the lifting plate 8 to move downward, and the collision ring 24 contacts the surface of the product body 39. During the continuous descent, the piston plate 22 is driven upward by the piston rod 23 to inject the glue in the glue filling cylinder 14 and the glue dispensing cylinder 15 into the inner cavity 40 of the product body 39 through the glue filling head 11 and the glue dispensing head 12 respectively.

[0047] When the hydraulic rod 7 contracts and drives the lifting plate 8 to move upward, the piston rod 23 and the piston plate 22 can move downward under the action of the return spring 27, and the glue in the glue storage box 17 can be drawn into the glue dispensing cylinder 15 through the delivery pipe 18 for replenishment.

[0048] At the same time, since the glue extraction head 19 is in a state of being inserted into the previous inner cavity 40 at this time, the glue filling tube 21 can draw the uncured glue at the center of the previous inner cavity 40 back into the glue filling tube 14, while the glue on the side of the previous inner cavity 40 continues to be attached to the inner cavity 40 for shielding, and the glue inside the glue filling tube 14 can be applied to the next inner cavity 40. This glue dispensing method can achieve the advantages of reducing the amount of glue used and reducing costs. In addition, since the glue at the center of the inner cavity 40 is sucked out to produce a larger hollow depression, it is convenient for the subsequent cleaning of the cured glue.

[0049] It is worth mentioning that when the glue dispensing operation is performed on the first row of inner cavities 40 of the product body 39 for the first time, since no glue is poured into the glue filling tube 14, the glue inside the inner cavity 40 is completely injected by the position of the glue dispensing head 12. Therefore, the number of glue dispensing times needs to be increased to fill the inner cavity 40 with glue. If the product body 39 is replaced or the row is changed for glue dispensing, the glue dispensing head 12 needs to be used to perform multiple glue dispensing operations on the second inner cavity 40 in each row.

[0050] A limiting slide rail 29 is fixedly installed at the bottom end of the lifting plate 8, and the second connecting column 10 is laterally slidably connected to the inside of the horizontal groove on the bottom side of the limiting slide rail 29, and the surface of the second connecting column 10 is threadedly connected with a locking screw 30, and the front of the limiting slide rail 29 is provided with an opening for the locking screw 30 to slide. The second connecting column 10 slides laterally in the inside of the horizontal groove at the bottom end of the limiting slide rail 29 to adjust the distance between the glue extraction head 11 and the glue filling head 19.

[0051] By sliding the second connecting column 10 laterally inside the limiting slide rail 29 , the spacing between the glue extraction head 19 , the glue filling head 11 and the glue dispensing head 12 can be adjusted to meet the use of the product body 39 with different spacings between the inner cavities 40 .

[0052] An electric heating ring 41 is embedded at the bottom end of the collision ring 24 .

[0053] By setting the electric heating ring 41, when the product body 39 is subjected to the glue dispensing operation, when the collision ring 24 contacts the surface of the product body 39, the electric heating ring 41 contacts the surface of the product body 39 in advance, and during the contact process, the electric heating ring 41 can heat the inner wall of the inner cavity 40 of the product body 39, thereby increasing the curing speed of the glue close to the hole wall, avoiding the situation where the glue at the center of the inner cavity 40 is drawn back and causes the glue at the hole wall to flow to the center, thereby ensuring the shielding effect of the glue on the inner wall of the inner cavity 40.

[0054] Working principle: In the present invention, the product body 39 is installed on the surface of the dispensing table 2, and the computer is controlled to drive each servo motor to rotate, so as to move the positions of the dispensing table 2, the frame 3, the transverse seat 4 and the lifting seat 5 respectively, and adjust the position of the dispensing component and the position of the inner cavity 40 on the surface of the product body 39 accordingly.

[0055] When performing the glue dispensing and masking action on the inner cavity 40, the glue filling head 11 and the glue dispensing head 12 are pre-aligned with the positions of the inner cavity 40, and the glue extraction head 19 is aligned with the position of the previous inner cavity 40. Then, the hydraulic rod 7 is controlled to extend to drive the lifting plate 8 to move downward, and the collision ring 24 contacts the surface of the product body 39. During the continuous descent, the piston plate 22 is driven upward by the piston rod 23 to inject the glue in the glue filling cylinder 14 and the glue dispensing cylinder 15 into the inner cavity 40 of the product body 39 through the glue filling head 11 and the glue dispensing head 12 respectively.

[0056] After the dispensing action is completed, the hydraulic rod 7 is automatically controlled to retract. When the hydraulic rod 7 retracts and drives the lifting plate 8 to move upward, the piston rod 23 and the piston plate 22 can move downward under the action of the return spring 27, and the glue inside the glue storage box 17 can be drawn into the dispensing cylinder 15 through the delivery pipe 18 for replenishment.

[0057] At the same time, since the glue extraction head 19 is in a state of being inserted into the previous inner cavity 40 at this time, the glue filling tube 21 can draw the uncured glue at the center of the previous inner cavity 40 back into the glue filling tube 14, while the glue on the side of the previous inner cavity 40 continues to be attached to the inner cavity 40 for shielding, and the glue inside the glue filling tube 14 can be applied to the next inner cavity 40. This glue dispensing method can achieve the advantages of reducing the amount of glue used and reducing costs. In addition, since the glue at the center of the inner cavity 40 is sucked out to produce a larger hollow depression, it is convenient for the subsequent cleaning of the cured glue.

[0058] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention without departing from the principles and purpose of the present invention. The protection scope of the present invention is defined by the claims and their equivalent technical solutions.

Claims

1. A method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation, characterized in that The steps include: (1) Use corrosion-resistant glue A and B glue, mix them in a 1:1 ratio, and introduce the prepared corrosion-resistant glue into the glue dispensing machine; (2) Use a dispensing machine to inject glue into the inner cavity of the product to form an electroplating shielding area; (3) Leave the product with the electroplating shielding area at room temperature for two hours, or bake it in an oven at 150° for half an hour. After the corrosion-resistant glue solidifies, electroplating / chemical plating can be carried out.

2. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 1, characterized in that: The product comprises a rectangular product body, and a plurality of inner cavities are evenly distributed longitudinally on the upper surface of the product body.

3. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 1, characterized in that: Step (2) is specifically as follows: using a glue dispenser to inject the corrosion-resistant glue into the inner cavity of the product, and before the corrosion-resistant glue solidifies, the injection amount is flush with the upper frame surface of the inner cavity of the product.

4. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 1, characterized in that: Step (2) is specifically as follows: the first inner cavity near one end of the product body is injected with corrosion-resistant glue through the glue dispensing head of the glue dispensing machine. When the second inner cavity is injected with glue through the glue dispensing head, the glue filling head of the glue dispensing machine extracts the uncured corrosion-resistant glue at the center of the first inner cavity and fills it into the second inner cavity. The glue on the side of the first inner cavity continues to adhere to the inner cavity for masking, and so on.

5. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 4, characterized in that: The amount of the corrosion-resistant glue injected before extraction is flush with the upper frame surface of the inner cavity of the product.

6. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 4, characterized in that: The glue dispensing machine comprises a base, the upper part of the base is respectively connected to a glue dispensing platform and a rack in longitudinal sliding manner, the surface of the rack is connected to a traverse seat in transverse sliding manner, the front of the traverse seat is connected to a lifting seat in vertical sliding manner, and a glue dispensing assembly is arranged on the surface of the lifting seat; The dispensing assembly comprises a fixed plate fixedly mounted on the surface of the lifting seat, a hydraulic rod is embedded on the surface of the fixed plate, a lifting plate is fixedly mounted on the telescopic end of the hydraulic rod, a first connecting column and a second connecting column are respectively arranged at the bottom end of the lifting plate, a glue filling head and a glue dispensing head are respectively arranged at the bottom end of the first connecting column, a fixing ring is fixedly mounted on the surface of the first connecting column, a glue filling cylinder and a glue dispensing cylinder are symmetrically fixedly mounted on the left and right sides of the upper surface of the fixing ring, the inner cavity of the glue dispensing cylinder is connected to the glue dispensing head through a glue dispensing tube, and the right side of the lifting seat is fixed A glue storage box is fixedly installed, and the glue storage box is connected to the inner cavity of the glue dispensing cylinder through a conveying pipe. A glue extraction head is arranged at the bottom end of the second connecting column. The inner cavity of the glue replenishing cylinder is connected to the glue extraction head through the glue extraction tube, and the inner cavity of the glue replenishing cylinder is connected to the glue replenishing head through the glue replenishing tube. The inner cavities of the glue dispensing cylinder and the glue replenishing cylinder are both slidably installed with piston plates, and a piston rod is fixedly installed at the bottom end of the piston plate. The bottom end of the piston rod extends to the bottom of the fixed ring and is fixedly installed with a collision ring. The glue dispensing head and the glue replenishing head both correspond to the center hole position of the collision ring.

7. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 6, characterized in that: The surfaces of the glue dispensing tube and the delivery tube are both provided with a first one-way valve, and the total delivery direction of the two first one-way valves is from the glue storage box toward the glue dispensing head. The surfaces of the glue extraction tube and the glue replenishing tube are both provided with a second one-way valve, and the total delivery direction of the two second one-way valves is from the glue extraction head toward the glue replenishing head.

8. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 6, characterized in that: A return spring is sleeved on the surface of the piston rod, and the bottom end and the top end of the return spring are respectively pressed against the top surface of the collision ring and the bottom surface of the fixing ring.

9. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 6, characterized in that: A travel switch is arranged on the upper surface of the collision ring, a trigger end of the travel switch corresponds to the position of the lower surface of the fixing ring, and the travel switch is electrically connected with the hydraulic rod.

10. The method for realizing local electroplating / chemical plating by corrosion-resistant adhesive isolation according to claim 6, characterized in that: An electric heating ring is embedded at the bottom end of the collision ring.

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