Electrolytic copper foil small test etching spray experimental tank
By designing a small-scale etching spray test tank for electrolytic copper foil, the problems of high equipment cost, complex operation, large environmental pollution, and large footprint of etching lines were solved, achieving low-cost, safe, and flexible etching operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIUJIANG TELFORD ELECTRONICS MATERIAL CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-28
AI Technical Summary
Existing etching line equipment is costly, complex to operate, causes significant environmental pollution, occupies a large area, and requires specialized knowledge and ample space.
An electrolytic copper foil small-scale etching spray test tank was designed, including a spray etching chamber and an etching solution storage chamber. It adopts a compact structure and uses a liquid pump delivery component, heating pipe and temperature sensor to accurately control the flow rate and temperature of the etching solution. The etching solution atomizing nozzle component achieves uniform etching, and the exhaust duct sucks away the acid mist. It has a flexible structure, small footprint and high safety.
It reduces equipment costs, simplifies operating procedures, reduces environmental pollution, reduces etching solution consumption, saves space, and improves operational safety and flexibility.
Smart Images
Figure CN224564705U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrolytic copper foil surface treatment technology, specifically to a small-scale etching spray test tank for electrolytic copper foil. Background Technology
[0002] Etching requirements are indispensable and diverse in the copper foil industry. For example, peel resistance testing of copper foil requires acidic etching formulations to obtain the 3.175mm wide copper foil samples needed for the test; in the development of buried resist copper foil, alkaline etching formulations are needed to simulate the requirements of downstream customers for buried resist layer etching. In order to meet the various etching needs of copper foil production or laboratory, multiple independent etching lines are required.
[0003] Existing etching line equipment is expensive (ranging from 100,000 to 300,000 yuan), and subsequent installation, commissioning, and operator training also require significant investment. Furthermore, the costs of chemical reagents and electricity consumed during operation are high, and regular maintenance is necessary, all of which increase the overall cost. Etching lines involve multiple complex technologies, such as mechanical transmission, automated control, and chemical etching. Operators need to possess professional knowledge and skills; otherwise, operational errors may occur, affecting etching quality, or even causing equipment malfunctions and safety accidents. Companies also need to invest in training their operators. The etching process uses a large amount of chemical reagents (such as strong acids and alkalis). Improper handling of these reagents after use can cause serious environmental pollution. Companies need to equip themselves with specialized wastewater and exhaust gas treatment equipment, which not only increases equipment investment and operating costs but also requires professional management and maintenance to ensure emissions meet standards. Furthermore, etching lines are typically composed of multiple equipment units, including etching machines, cleaning machines, and dryers, requiring a large overall footprint. Companies need sufficient factory space for installation and layout. Etching lines are typically about 1 meter wide and 3-10 meters long, which can be problematic for companies with limited space. Utility Model Content
[0004] This invention provides a small-scale etching spray test tank for electrolytic copper foil, which can solve the problems of high cost, complex operation and high requirements, large environmental pollution and large footprint of existing etching line equipment.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a small-scale etching spray test tank for electrolytic copper foil, comprising a spray etching chamber and an etching solution storage chamber arranged side by side and connected in communication. A detachable etching sample placement tray is provided at the bottom of the spray etching chamber. An etching solution atomizing nozzle assembly is installed above the etching sample placement tray. The etching solution storage chamber is connected to the etching solution atomizing nozzle assembly via a liquid pump delivery assembly. A heating tube and a temperature sensor are installed inside the etching solution storage chamber. The heating tube, temperature sensor, and liquid pump delivery assembly are all electrically connected to a control box. The spray etching chamber and etching solution storage chamber have a compact structure. The liquid pump delivery assembly can continuously deliver the etching solution from the etching solution storage chamber to the etching solution atomizing nozzle assembly to continuously etch the sample on the etching sample placement tray. The heating tube and temperature sensor can accurately and stably control parameters such as the flow rate and temperature of the etching solution.
[0006] Preferably, the spray etching chamber and the etching solution storage chamber are integrally formed and separated by a partition. The structure is compact, occupies a small area, and facilitates the reflux circulation between the spray etching chamber and the etching solution storage chamber.
[0007] Preferably, the bottom surface of the spray etching chamber is higher than the bottom surface of the etching solution storage chamber, and a return channel is provided at the lower part of the partition to facilitate the return of the etching solution from the spray etching chamber to the etching solution storage chamber.
[0008] Preferably, the spray etching chamber and the etching solution storage chamber are mounted on a movable base, and the liquid pump delivery assembly is mounted on a bracket separate from the movable base. The separate installation of the liquid pump delivery assembly and the movable base makes the installation and placement of the spray test tank more flexible.
[0009] Preferably, the lower part of the front side wall of the spray etching chamber is equipped with a slot for inserting a tray for placing etched samples laterally. The drawer-type structure allows for quick replacement of etched samples without having to put hands into the spray etching chamber, ensuring safety and reliability.
[0010] Preferably, the liquid pump delivery assembly includes a gear pump whose inlet is connected to the etching solution storage chamber via a first pipeline, and a gear pump outlet connected to a second pipeline. The second pipeline is also connected to a third pipeline and a pressure relief return pipeline. The third pipeline is connected to the etching solution atomizing nozzle assembly. By replacing the first, second, and third pipelines, the distance between the gear pump and the etching solution storage chamber can be adjusted to meet different installation space requirements. The pressure relief return pipeline can be opened when the gear pump needs to be depressurized to allow the etching solution to return to the etching solution storage chamber, preventing safety accidents.
[0011] Preferably, a liquid drain pipe is installed on the bottom side wall of the etching solution storage chamber, which can quickly drain the etching solution inside the etching solution storage chamber.
[0012] Preferably, control valves are installed on both the pressure relief return pipe and the liquid drain pipe to facilitate the control of opening and closing of the pressure relief return pipe and the liquid drain pipe.
[0013] Preferably, the etching solution atomizing nozzle assembly includes a plurality of downward-facing atomizing nozzles evenly arranged, which can simultaneously spray atomized etching solution downwards to uniformly etch the sample.
[0014] Preferably, an exhaust duct is installed on the inner wall of the spray etching chamber, and a top cover is installed on the upper side of the spray etching chamber and the etching solution storage chamber. The exhaust duct can promptly remove the acid mist generated during the etching spray experiment, and the top cover keeps the etching in an independent space.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] The spray etching chamber and etching solution storage chamber have a compact structure. The liquid pump delivery assembly can continuously deliver the etching solution in the etching solution storage chamber to the etching solution atomizing nozzle assembly to continuously etch the sample on the sample placement tray. The liquid pump delivery assembly can precisely control the flow rate of the etching solution. At the same time, the heating tube and temperature sensor can accurately and stably control the temperature of the etching solution. Therefore, the operation is relatively simple and safe, the overall space occupied is relatively small, the installation is relatively flexible, the amount of etching solution used is relatively small, and the environmental impact is relatively small. Attached Figure Description
[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0018] Figure 2 This is a three-dimensional structural diagram of the spray etching chamber and etching solution storage chamber of this utility model;
[0019] Figure 3 This is a three-dimensional structural diagram of the etching solution atomizing nozzle assembly of this utility model.
[0020] Figure label:
[0021] 1. Spray etching chamber; 2. Etching solution storage chamber; 3. Top cover; 4. Etching sample placement tray; 5. Etching solution atomizing nozzle assembly; 6. Return channel; 7. Heating tube; 8. Temperature sensor; 9. First pipeline; 10. Pressure relief return pipeline; 11. Liquid drain pipeline; 12. Gear pump; 13. Control box; 14. Second pipeline; 16. Third pipeline. Detailed Implementation
[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0023] This utility model addresses the problems of high cost, complex operation, high requirements, significant environmental pollution, and large footprint of existing etching line equipment. For example... Figure 1-3 As shown, the following technical solution is provided: a small-scale etching spray test tank for electrolytic copper foil includes a spray etching chamber 1 and an etching solution storage chamber 2 arranged side by side and connected in communication. A detachable etching sample placement tray 4 is provided at the bottom of the spray etching chamber 1. An etching solution atomizing nozzle assembly 5 is installed above the etching sample placement tray 4. The etching solution storage chamber 2 is connected to the etching solution atomizing nozzle assembly 5 through a liquid pump delivery assembly. A heating tube 7 and a temperature sensor 8 are installed in the etching solution storage chamber 2. The heating tube 7, temperature sensor 8, and liquid pump delivery assembly are all electrically connected to a control box 13. The spray etching chamber 1 and the etching solution storage chamber 2 have a compact structure. The liquid pump delivery assembly can continuously deliver the etching solution in the etching solution storage chamber 2 to the etching solution atomizing nozzle assembly 5 to continuously etch the sample on the etching sample placement tray 4. The heating tube 7 and temperature sensor 8 can accurately and stably control the temperature of the etching solution.
[0024] Specifically, the spray etching chamber 1 and the etching solution storage chamber 2 are integrally formed structures, separated by a partition. This compact structure occupies a small area and facilitates the reflux circulation between the two. The spray etching chamber 1 and the etching solution storage chamber 2 are mounted on a movable base. The liquid pump delivery assembly is installed on a separate bracket from the movable base, allowing for more flexible installation of the spray test tank. Both the spray etching chamber 1 and the etching solution storage chamber 2 are welded from high-temperature and corrosion-resistant CPVC sheets, and their bottom supports are made of 316L stainless steel square tubing. Universal casters can be installed on the bottom of the support for easy movement. The liquid inlet volume of the etching solution atomizing nozzle assembly 5 is precisely controlled by the liquid pump delivery assembly.
[0025] The heating element 7 can be a 3000W corrosion-resistant titanium heating element, and the control box 13 can be a digital display intelligent temperature control box. Its function is to control the temperature of the etching solution. When the temperature sensor 8 detects that the temperature of the etching solution has not reached the set temperature, the heating element 7 will automatically start heating. When the temperature reaches the set value, the heating element 7 will automatically stop heating.
[0026] In this embodiment, the bottom surface of the spray etching chamber 1 is higher than the bottom surface of the etching solution storage chamber 2. A return channel 6 is provided at the lower part of the partition to facilitate the return of the etching solution from the spray etching chamber 1 to the etching solution storage chamber 2. The return channel 6 can be a long strip-shaped channel.
[0027] In this embodiment, the lower part of the front sidewall of the spray etching chamber 1 is equipped with a slot for the horizontal insertion of the etching sample placement tray 4. The drawer-type structure allows for quick replacement of the etching sample without having to put your hand into the spray etching chamber 1, ensuring safety and reliability. A sealing structure, such as a sealing strip, can be provided at the position where the etching sample placement tray 4 mates with the slot sidewall to prevent the etching solution from leaking out of the spray etching chamber 1. Since the etching solution can flow back to the etching solution storage chamber 2 through the return channel 6, the etching solution will not flow out of the slot when the etching sample placement tray 4 is pulled out. The etching sample placement tray 4 has a length and width of 220mm for placing copper foil samples, which meets the experimental requirements and can uniformly complete the etching of a copper foil sample with a length and width of 200mm in 45 seconds to 90 seconds.
[0028] In this embodiment, the liquid pump delivery assembly includes a gear pump 12 whose inlet is connected to the etching solution storage chamber 2 via a first pipe 9. The gear pump 12's outlet is connected to a second pipe 14, which is also connected to a third pipe 16 and a pressure relief return pipe 10. The third pipe 16 is connected to the etching solution atomizing nozzle assembly 5. By replacing the first pipe 9, the second pipe 14, and the third pipe 16, the distance between the gear pump 12 and the etching solution storage chamber 2 can be adjusted to meet different installation space requirements. The pressure relief return pipe 10 can be opened when the gear pump 12 needs to be depressurized, allowing the etching solution to return to the etching solution storage chamber 2 to prevent safety accidents. At the same time, when the gear pump 12 is operating at full load, the flow rate of the etching solution atomizing nozzle assembly 5 can also be controlled through the pressure relief return pipe 10. Specifically, the gear pump 12 can be a stainless steel gear pump with a flow rate of 10L / min and a pressure of 0.3Mpa. The first pipeline 9, the second pipeline 14, the third pipeline 16 and the pressure relief return pipeline 10 can all be made of DN20 CPVC round pipe or steel wire hose, and are locked and fixed by clamps.
[0029] In this embodiment, a liquid drain pipe 11 is installed on the bottom side wall of the etching solution storage chamber 2, which can quickly drain the etching solution inside the etching solution storage chamber 2. Both the pressure relief return pipe 10 and the liquid drain pipe 11 are equipped with control valves to facilitate the opening and closing of these pipes. The control valves can be electric ball valves or manual ball valves.
[0030] In this embodiment, the etching solution atomizing nozzle assembly 5 includes a plurality of downward-facing atomizing nozzles evenly arranged. The plurality of atomizing nozzles can simultaneously spray atomized etching solution downward to uniformly etch the sample. Specifically, the atomizing nozzles are conical nozzles made of PVDF, and the spacing between adjacent nozzles is 150mm. The number of atomizing nozzles can be increased or decreased as needed, preferably four, and they are evenly arranged along the circumference.
[0031] In this embodiment, an exhaust duct 18 is installed on the inner wall of the spray etching chamber 1, and a top cover 3 is installed on the upper side of the spray etching chamber 1 and the etching liquid storage chamber 2. The exhaust duct 18 can promptly remove the acid mist generated during the etching spray experiment, and the top cover 3 keeps the etching in an independent space. The top cover 3 can be made of transparent PVC board so that the spraying effect can be better observed.
[0032] In this embodiment, the etching solution flows through the following path during the spray etching experiment: the etching solution in the etching solution storage chamber 2 is drawn out by the gear pump 12 through the first pipeline 9, and then pumped to the second pipeline 14 and the third pipeline 16 → etching solution atomizing nozzle assembly 5 → atomized and sprayed onto the etching sample placement tray 4 in the spray etching chamber 1 to etch the copper foil sample. The etching solution at the bottom of the spray etching chamber 1 is automatically returned to the etching solution storage chamber 2 through the return channel 6. The acid mist generated during the etching spray experiment can be drawn away through the exhaust duct 18 located at the rear of the spray etching chamber 1. After the experiment, all etching solution is discharged through the liquid drain pipe 11.
[0033] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0034] Furthermore, in this utility model, descriptions involving terms such as "primary," "secondary," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "primary" or "secondary" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly and specifically defined.
[0035] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0036] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
Claims
1. A small-scale etching spray test tank for electrolytic copper foil, characterized in that, The system includes a spray etching chamber (1) and an etching solution storage chamber (2) arranged side by side and connected to each other. A detachable etching sample placement tray (4) is provided at the bottom of the spray etching chamber (1). An etching solution atomizing nozzle assembly (5) is installed above the etching sample placement tray (4). The etching solution storage chamber (2) is connected to the etching solution atomizing nozzle assembly (5) through a liquid pump delivery assembly. A heating tube (7) and a temperature sensor (8) are installed in the etching solution storage chamber (2). The heating tube (7), the temperature sensor (8) and the liquid pump delivery assembly are all electrically connected to the control box (13).
2. The electrolytic copper foil small-scale etching spray test tank according to claim 1, characterized in that: The spray etching chamber (1) and the etching liquid storage chamber (2) are integrally formed structures, and are separated by a partition.
3. The electrolytic copper foil small-scale etching spray test tank according to claim 2, characterized in that: The bottom surface of the spray etching chamber (1) is higher than the bottom surface of the etching liquid storage chamber (2), and a return channel (6) is provided at the lower part of the partition.
4. The electrolytic copper foil small-scale etching spray test tank according to claim 1, characterized in that: The spray etching chamber (1) and the etching liquid storage chamber (2) are mounted on a movable base, and the liquid pump delivery assembly is mounted on a bracket that is separate from the movable base.
5. The electrolytic copper foil small-scale etching spray test tank according to claim 1, characterized in that: The lower part of the front side wall of the spray etching chamber (1) is equipped with a slot for the etched sample placement tray (4) to be inserted laterally.
6. The electrolytic copper foil small-scale etching spray test tank according to claim 1, characterized in that: The liquid pump delivery assembly includes a gear pump (12) whose inlet is connected to the etching solution storage chamber (2) via a first pipeline (9), and the gear pump (12) whose outlet is connected to a second pipeline (14). The second pipeline (14) is also connected to a third pipeline (16) and a pressure relief return pipeline (10). The third pipeline (16) is connected to the etching solution atomizing nozzle assembly (5).
7. The electrolytic copper foil small-scale etching spray test tank according to claim 6, characterized in that: A liquid drain pipe (11) is installed on the bottom side wall of the etching solution storage chamber (2).
8. The electrolytic copper foil small-scale etching spray test tank according to claim 7, characterized in that: Control valves are installed on both the pressure relief return pipe (10) and the liquid drain pipe (11).
9. The electrolytic copper foil small-scale etching spray test tank according to any one of claims 1-8, characterized in that: The etching solution atomizing nozzle assembly (5) includes a plurality of downward-facing atomizing nozzles arranged in a uniform manner.
10. The electrolytic copper foil small-scale etching spray test tank according to claim 9, characterized in that: The inner wall of the spray etching chamber (1) is equipped with an exhaust duct (18), and the upper side of the spray etching chamber (1) and the etching liquid storage chamber (2) is equipped with a top cover (3).