Developing device for uniformly developing PCB (Printed Circuit Board) solder mask hole

Abstract

The invention discloses a developing device for uniformly developing PCB solder mask holes, and relates to the technical field of developing equipment.The developing device comprises an equipment shell, a driving motor, a photosensitive drum cylinder and a charging roller, the charging roller is arranged on one side of the photosensitive drum cylinder, and the developing device further comprises an axis parallelism detection assembly, an axis parallelism adjustment assembly and a contact pressure increase feedback assembly; through the arrangement of the axis parallelism adjusting assembly, when the photosensitive drum cylinder and the charging roller are installed / used, axis parallelism alignment processing can be carried out on driving motors of the photosensitive drum cylinder and the charging roller; in the prior art, the installation precision is not good when the photosensitive drum cylinder and the charging roller are installed / used, so that the axial lines of the photosensitive drum cylinder and the charging roller are not parallel, the contact area of the photosensitive drum cylinder and the charging roller is reduced, the pressure distribution is not uniform, and the charging roller cannot effectively apply uniform charges to the photosensitive drum cylinder. The subsequent exposure and development processes are influenced, and the quality problems of image blurring, uneven color and the like are caused.

Description

Technical Field

[0001] The invention relates to the technical field of developing equipment, and in particular to a developing device for developing uniform PCB solder mask holes. Background Art

[0002] The developing device can develop digital graphic information on media such as paper through a specific chemical or physical process to achieve high-quality printed output. In various printing methods such as offset printing, gravure printing, and letterpress printing, the developing device is used to clearly develop the graphic information on the printing plate for subsequent printing operations.

[0003] For the developing device in the prior art, the charging roller and the photosensitive drum are of vital importance. When the conventional developing device installs the charging roller and the photosensitive drum, due to the limitation of installation accuracy and the influence of factors such as vibration, the charging roller is prone to installation position deviation and is not parallel to the axis of the photosensitive drum. The non-parallel axis reduces the contact area between the two and the pressure distribution is uneven, which will cause the charging roller to be unable to effectively give a uniform charge to the photosensitive drum, affecting the subsequent exposure and development process, causing quality problems such as image blur and uneven color, and reducing the working efficiency and imaging quality of the equipment;

[0004] In addition, the developing device works in different environments, and changes in temperature and humidity will affect its performance; in a high temperature and high humidity environment, the charging roller and the photosensitive drum material will absorb moisture and expand due to heat, resulting in increased contact pressure. Under normal conditions, the contact pressure between the two is carefully designed and adjusted to ensure good charging effect and imaging quality, but when the pressure increases, the surface wear of the components will increase, shortening the service life, and may also cause uneven charge distribution on the surface of the photosensitive drum, affecting the charging effect and the developing process. At the same time, the high temperature and high humidity environment will also affect its surface properties such as conductivity and friction coefficient, affecting imaging stability.

[0005] Therefore, the present invention proposes a developing device for developing uniform PCB solder mask holes to solve the above problems. Summary of the invention

[0006] In view of this, the technical problem to be solved by the present invention is to propose a device that can monitor the parallelism of the axes of the driving motors that drive the photosensitive drum cylinder and the charging roller when the equipment is installed and in use; can adjust the parallelism of the output end axes of the two driving motors that drive the photosensitive drum cylinder and the charging roller to ensure that the contact area between the two and the pressure of the contact parts are evenly distributed, thereby improving the development quality; and can feedback the situation that the photosensitive drum cylinder and the charging roller materials absorb moisture and expand due to heat in a high temperature and high humidity environment, thereby avoiding the increase of the contact pressure between the photosensitive drum cylinder and the charging roller, which aggravates the wear of the component surface and shortens the service life. A developing device for PCB solder mask holes with uniform development is provided to solve the problems existing in the prior art.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: a developing device for developing uniform PCB solder mask holes, comprising: a device housing, a driving motor, a photosensitive drum cylinder, and a charging roller, wherein the charging roller is arranged on one side of the photosensitive drum cylinder, and further comprising: an axis parallelism detection component, an axis parallelism adjustment component, and a contact pressure increase feedback component;

[0008] The axis parallelism detection assembly is mainly used to monitor the axis parallelism of the drive motor driving the photosensitive drum cylinder and the charging roller during installation and when the equipment is in use;

[0009] The axis parallelism adjustment component is mainly used to adjust the parallelism of the output axis of the two driving motors driving the photosensitive drum cylinder and the charging roller to ensure that the contact area between the two and the pressure at the contacting parts are evenly distributed;

[0010] The contact pressure increase feedback component is mainly used to feedback the situation that the photosensitive drum cylinder and the charging roller material absorb moisture and expand due to heat in a high temperature and high humidity environment.

[0011] Preferably, the axis parallelism detection component includes a sleeved arc slot body sleeved on the output shaft of the driving motor, an arc slot is provided on a semicircular surface of the sleeved arc slot body, and a sliding block is slidably connected in the arc slot.

[0012] Preferably, a long rod is transversely inserted into the non-sliding end of the sliding block, the long rod has an inner cavity, a magnetic part is transversely slidably connected to the inner cavity of the long rod, and a Hall switch is fixedly connected to the middle of the inner cavity wall of the long rod.

[0013] Preferably, the axial parallelism adjustment assembly includes a vertical slide groove opened on the device housing, a sliding plate is slidably connected in the vertical slide groove, the drive motor is fixedly connected to the sliding plate, a socket is sleeved on the main shell of the drive motor, and the photosensitive drum cylinder is fixedly connected to the output end of the drive motor.

[0014] Preferably, the inner wall of the equipment shell is fixedly connected to a water storage cavity A by screws, a movable plug A is vertically slidably connected in the water storage cavity A, a spring body A is fixedly connected to the upper surface of the movable plug A, the top of the spring body A is fixedly connected to the top wall of the inner cavity of the water storage cavity A, and a one-way electric valve pump component A is fixedly connected to one side wall of the water storage cavity A.

[0015] Preferably, the inner wall of the equipment shell is fixedly connected to a water storage cavity B by screws, a movable plug B is vertically slidably connected in the water storage cavity B, a spring body B is fixedly connected to the bottom of the movable plug B, the bottom end of the spring body B is fixedly connected to the bottom of the inner cavity of the water storage cavity B, a one-way electric valve pump component B is fixedly connected to one side wall of the water storage cavity B, one end of the one-way electric valve pump component B away from the water storage cavity B is connected to the water storage cavity A, and the one end of the one-way electric valve pump component A away from the water storage cavity A is connected to the water storage cavity B.

[0016] Preferably, the contact pressure increase feedback component includes an inner slide groove formed on the sliding block, a connecting piece is fixedly connected to the end face of the long rod, an end of the connecting piece away from the long rod is fixedly connected to an inclined block, a stabilization kit A is fixedly connected to the top of the inner slide groove, a spring body C is fixedly connected to the stabilization kit A, a vertical rod is fixedly connected to the bottom end of the spring body C, an inclined groove is formed on the vertical rod, and a warning light is fixedly connected to the upper surface of the sliding block.

[0017] Preferably, a stabilizing kit B is fixedly connected to the bottom of the inner slide groove, an electric contact A is fixedly connected to the inside of the stabilizing kit B, and an electric contact B is fixedly connected to the bottom of the vertical rod.

[0018] Preferably, the oblique groove and the oblique block are matched, and the height of the oblique groove gradually decreases from left to right.

[0019] Compared with the prior art, the present invention provides a developing device for PCB solder mask holes with uniform development, which has the following beneficial effects:

[0020] 1. By setting the axis parallelism adjustment component, the axis parallelism of the driving motor of the photosensitive drum cylinder and the charging roller can be aligned when installing / using the photosensitive drum cylinder and the charging roller, so as to avoid the poor installation accuracy in the prior art when installing / using the photosensitive drum cylinder and the charging roller, which makes the axis lines of the photosensitive drum cylinder and the charging roller non-parallel, and thus reduces the contact area between the two, and the pressure distribution is uneven, resulting in the charging roller being unable to effectively give a uniform charge to the photosensitive drum cylinder, affecting the subsequent exposure and development process, and causing quality problems such as blurred images and uneven colors.

[0021] 2. Through the design of the one-way electric valve pump component A and the one-way electric valve pump component B, in addition to providing support for the transfer of the solution when the axis parallelism adjustment component performs the axis parallelism adjustment of the photosensitive drum cylinder and the charging roller; when there is no parallelism problem between the photosensitive drum cylinder and the charging roller, the one-way pumps of the one-way electric valve pump component A and the one-way electric valve pump component B can be controlled to transfer the aqueous solution in the water storage cavity A and the water storage cavity B at the same speed, thereby forming an aqueous solution flow component composed of the water storage cavity A, the one-way electric valve pump component A, the water storage cavity B, and the one-way electric valve pump component B, and in combination with the known socket made of heat-conducting metal, when the aqueous solution flows in the one-way electric valve pump component A and the one-way electric valve pump component B, the heat generated by the drive motor can be indirectly absorbed through the socket to cool the drive motor; and because the one-way electric valve pump component A and the one-way electric valve pump component B are metal pipes, they can also provide support and guidance services for the socket when in use.

[0022] 3. Through the design of the contact pressure increase feedback component, it is possible to monitor and feedback the situation in which the photosensitive drum cylinder and charging roller materials absorb moisture and expand due to heat in a high temperature and high humidity environment, so as to avoid the situation in which the contact pressure between the photosensitive drum cylinder and the charging roller increases after expansion, resulting in increased wear on the surface of the components and shortened service life. At the same time, it can also avoid uneven charge distribution on the surface of the photosensitive drum cylinder, which affects the charging effect and the development process, and can effectively prevent the high temperature and high humidity environment from affecting its surface properties such as conductivity and friction coefficient, and affecting imaging stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is the appearance diagram of the main structure of the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the main structure of the present invention;

[0025] Figure 3 This is a main structural diagram of the axis parallelism adjustment component of the present invention;

[0026] Figure 4 This is a distribution diagram of the structural positions of the axis parallelism detection component and the axis parallelism adjustment component of the present invention;

[0027] Figure 5 This is a disassembled diagram of the main structure of the present invention;

[0028] Figure 6 For the present invention Figure 4 A magnified view of the structure at center;

[0029] Figure 7 For the present invention Figure 4 A magnified view of the structure at B in the middle;

[0030] Figure 8This is a structural diagram related to the contact pressure feedback component of the present invention.

[0031] In the figure:

[0032] 1. Equipment housing; 2. Driving motor; 3. Photosensitive drum cylinder; 4. Charging roller;

[0033] 5. Axis parallelism detection assembly; 501. Sleeve arc slot body; 502. Arc slot; 503. Sliding block; 504. Long bar; 505. Magnetic part; 506. Hall switch;

[0034] 6. Axis parallelism adjustment component; 601. Vertical slide; 602. Sliding sheet; 603. Socket; 604. Water storage chamber A; 605. Active plug A; 606. Spring body A; 607. One-way electric valve pump component A; 608. Water storage chamber B; 609. Active plug B; 610. Spring body B; 611. One-way electric valve pump component B;

[0035] 7. Contact pressure increase feedback assembly; 701. Inner slide groove; 702. Connector; 703. Oblique block; 704. Vertical rod; 705. Oblique groove; 706. Stabilizing kit A; 707. Spring body C; 708. Stabilizing kit B; 709. Electric contact piece A; 710. Electric contact piece B; 711. Warning light. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention is further described in detail below based on the accompanying drawings and embodiments.

[0038] Example

[0039] Please refer to Figure 1 , Figure 2 , Figure 4 , Figure 6 As shown:

[0040] In order to solve the problems mentioned in the technical solution, the embodiment of the present application provides a developing device for developing uniform PCB solder mask holes, including: a device housing 1, a driving motor 2, a photosensitive drum cylinder 3, and a charging roller 4, wherein the charging roller 4 is arranged on one side of the photosensitive drum cylinder 3, and further includes: an axis parallelism detection component 5, an axis parallelism adjustment component 6, and a contact pressure increase feedback component 7;

[0041] The axis parallelism detection component 5 is mainly used to monitor the axis parallelism of the driving motor 2 that drives the photosensitive drum cylinder 3 and the charging roller 4 during installation and when the equipment is in use; the axis parallelism detection component 5 includes a sleeved arc groove body 501 sleeved on the output shaft of the driving motor 2, an arc groove 502 is provided on the semicircular surface of the sleeved arc groove body 501, a sliding block 503 is slidably connected in the arc groove 502, a long rod 504 is laterally inserted into the non-sliding end of the sliding block 503, the long rod 504 has an inner cavity, a magnetic part 505 is laterally slidably connected to the inner cavity of the long rod 504, and a Hall switch 506 is fixedly connected to the middle of the inner cavity wall of the long rod 504.

[0042] in:

[0043] The photosensitive drum cylinder 3 and the charging roller 4 are each driven by a driving motor 2. Since the driving methods are the same, only one of them, namely the photosensitive drum cylinder 3, is described in the description.

[0044] The axis parallelism detection assembly 5 is mainly used to monitor the axis parallelism of the driving motor 2 that drives the photosensitive drum cylinder 3 and the charging roller 4 during installation and when the equipment is in use.

[0045] The sliding block 503 is slidably matched with the arc groove 502 .

[0046] There is an electrical connection between the Hall switch 506 and the device's main controller. When the magnetic part 505 slides in the long rod 504 and is no longer in the same vertical plane as the Hall switch 506, the Hall switch 506 will start the one-way electric valve pump A607 or the one-way electric valve pump B611 through the main control to transfer the aqueous solution and indirectly adjust the height of the drive motor 2.

[0047] For further examples, please refer to Figures 1 to 5 As shown:

[0048] The axis parallelism adjustment component 6 is mainly used to adjust the parallelism of the output end axes of the two driving motors 2 driving the photosensitive drum column 3 and the charging roller 4 to ensure that the contact area between the two and the pressure at the contact parts are evenly distributed; the axis parallelism adjustment component 6 includes a vertical slide groove 601 opened on the device housing 1, a sliding sheet 602 is slidably connected in the vertical slide groove 601, the driving motor 2 is fixedly connected to the sliding sheet 602, a socket 603 is sleeved on the main shell of the driving motor 2, the photosensitive drum column 3 is fixedly connected to the output end of the driving motor 2, the inner wall of the device housing 1 is fixedly connected to a water storage cavity A604 by screws, a movable plug A605 is vertically slidably connected in the water storage cavity A604, and a spring body A6 is fixedly connected to the upper surface of the movable plug A605 06, the top of the spring body A606 is fixedly connected to the top wall of the inner cavity of the water storage cavity A604, and a one-way electric valve pump component A607 is fixedly connected to one side wall of the water storage cavity A604. The inner wall of the equipment housing 1 is fixedly connected to the water storage cavity B608 by screws. A movable plug B609 is vertically slidably connected in the water storage cavity B608, and a spring body B610 is fixedly connected to the bottom of the inner cavity of the water storage cavity B608. A one-way electric valve pump component B611 is fixedly connected to one side wall of the water storage cavity B608. The end of the one-way electric valve pump component B611 away from the water storage cavity B608 is connected to the water storage cavity A604, and the end of the one-way electric valve pump component A607 away from the water storage cavity A604 is connected to the water storage cavity B608.

[0049] in:

[0050] The axis parallelism adjustment component 6 is mainly used to adjust the parallelism of the output end axes of the two driving motors 2 that drive the photosensitive drum cylinder 3 and the charging roller 4, to ensure that the contact area between the two and the pressure at the contact part are evenly distributed, so that the charging roller 4 can effectively give a uniform charge to the photosensitive drum cylinder 3 and improve the development quality.

[0051] The socket 603 is made of heat-conducting metal. When the aqueous solution flows in the one-way electric valve pump A607 and the one-way electric valve pump B611, the heat generated by the drive motor 2 can be indirectly absorbed by the socket 603. The specific socket arc groove body 501 can also be set to a state with a through hole to improve heat dissipation and reduce material consumption in component manufacturing; the socket arc groove body 501 is provided with a through hole for the sliding of the one-way electric valve pump A607 and the one-way electric valve pump B611.

[0052] In addition to transferring the aqueous solution in the water storage chamber A604 and the water storage chamber B608, the one-way electric valve pump component A607 and the one-way electric valve pump component B611 can also provide support and guidance for the sleeve component 603.

[0053] For further examples, please refer to Figure 1 , Figure 4 , Figure 7 , Figure 8 As shown:

[0054] The contact pressure increase feedback component 7 is mainly used to feedback the situation that the materials of the photosensitive drum cylinder 3 and the charging roller 4 absorb moisture and expand due to heat in a high temperature and high humidity environment. The contact pressure increase feedback component 7 includes an inner slide groove 701 opened on the sliding block 503, a connecting piece 702 is fixedly connected to the end face of the long rod 504, and an oblique block 703 is fixedly connected to the end of the connecting piece 702 away from the long rod 504. A stabilizing kit A706 is fixedly connected to the top of the inner slide groove 701, a spring body C707 is fixedly connected to the stabilizing kit A706, and a vertical rod 704 is fixedly connected to the bottom of the spring body C707. An oblique groove 705 is opened on the vertical rod 704, a warning light 711 is fixedly connected to the upper surface of the sliding block 503, a stabilizing kit B708 ​​is fixedly connected to the bottom of the inner slide groove 701, an electric contact A709 is fixedly connected to the stabilizing kit B708, and an electric contact B710 is fixedly connected to the bottom of the vertical rod 704.

[0055] in:

[0056] The contact pressure increase feedback component 7 is mainly used to feedback the situation in a high temperature and high humidity environment that the materials of the photosensitive drum cylinder 3 and the charging roller 4 absorb moisture and expand due to heat, so as to avoid the increase of contact pressure between the photosensitive drum cylinder 3 and the charging roller 4, which will aggravate the surface wear of the components and shorten the service life.

[0057] The oblique groove 705 is matched with the oblique block 703 , and the height of the oblique groove 705 gradually decreases from left to right.

[0058] There is an electrical connection between the electric contact piece A709, the electric contact piece B710 and the main controller of the device. When the electric contact piece A709 contacts the electric contact piece B710, the main controller will control the warning light 711 to light up to warn.

[0059] Everything in the above example works like this:

[0060] In the initial state: the axes of the photosensitive drum cylinder 3 and the charging roller 4 are parallel; the long rod 504 is in a horizontal state; the magnetic member 505 is located in the middle of the long rod 504; the amount of aqueous solution in the water storage cavity A604 and the water storage cavity B608 is the same; the spring body A606 and the spring body B610 are in a normal relaxed state; the spring body C707 is in a compressed state; the electric contact piece A709 and the electric contact piece B710 are not in contact.

[0061] The following is the working process of the axis parallelism detection component 5:

[0062] When the photosensitive drum cylinder 3 and the charging roller 4 are not parallel to each other, please refer to the attached Figure 1 , Attachment Figure 4 And attached Figure 6 At this time, the heights of the driving motor 2 for driving the photosensitive drum column 3 and the other driving motor 2 for driving the charging roller 4 will not be parallel. Assuming that the driving motor 2 for driving the photosensitive drum column 3 is lower than the other driving motor 2 for driving the charging roller 4, the long bar 504 indirectly connected to the driving motor 2 will tilt. When the long bar 504 tilts, the magnetic member 505 will no longer be in the middle of the long bar 504, but will slide in the slide groove opened in the long bar 504 in the direction away from the middle of the long bar 504. At this time, the Hall switch 506 is no longer in the same vertical plane as the magnetic member 505. The Hall switch 506 will be started through the master control of the one-way electric valve pump A607 or the one-way electric valve pump B611 to transfer the aqueous solution and indirectly adjust the height of the driving motor 2. It can be understood that the motor position is adjusted by exchanging the aqueous solution and then pushing the piston to move, and the axis parallelism adjustment component 6 is started for adjustment;

[0063] Please refer to the above working process Figure 1 , Figure 2 , Figure 4 , Figure 6 .

[0064] The following is the working process of the axis parallelism adjustment component 6:

[0065] Further, when the axis parallelism adjustment component 6 is activated, since it is known that the driving motor 2 for fixing the photosensitive drum column 3 is at a lower position, it is necessary to raise the driving motor 2 for fixing the photosensitive drum column 3 to a certain height. For details, please refer to the attached Figure 1 , Attachment Figure 3 , Attachment Figure 4 ;

[0066] During the adjustment, the water pump on the one-way electric valve pump A607 is started to extract the aqueous solution in the water storage chamber A604. At this time, the aqueous solution in the water storage chamber A604 decreases, and the aqueous solution in the water storage chamber B608 gradually increases. Further, the movable plug B609 and the movable plug A605 both rise. Since the known sleeve 603 is fixedly connected to the movable plugs A605 and B609, the sleeve 603 will move upward with the sleeved drive motor 2. At this time, the inclined long bar 504 indirectly connected to the drive motor 2 will gradually return to the horizontal state. When the magnetic member 505 in the long bar 504 overlaps with the Hall switch 506 again, the axis parallelism adjustment component 6 stops working and the adjustment is completed.

[0067] Furthermore, by setting the axial parallelism adjustment component 6, the axial parallelism of the drive motor 2 of the photosensitive drum cylinder 3 and the charging roller 4 can be aligned when the photosensitive drum cylinder 3 and the charging roller 4 are installed / used, so as to avoid the poor installation accuracy in the prior art when installing / using the photosensitive drum cylinder 3 and the charging roller 4, which makes the axial lines of the photosensitive drum cylinder 3 and the charging roller 4 non-parallel, and thus causes the contact area between the two to be reduced and the pressure distribution to be uneven, resulting in the charging roller 4 being unable to effectively impart a uniform charge to the photosensitive drum cylinder 3, affecting the subsequent exposure and development process, and causing quality problems such as image blur and color unevenness.

[0068] Furthermore, through the design of the one-way electric valve pump component A607 and the one-way electric valve pump component B611, in addition to providing support for the transfer of the solution when the axis parallelism adjustment component 6 performs the axis parallelism adjustment of the photosensitive drum cylinder 3 and the charging roller 4; when there is no parallelism problem between the photosensitive drum cylinder 3 and the charging roller 4, the one-way pumps of the one-way electric valve pump component A607 and the one-way electric valve pump component B611 can also be controlled to transfer the aqueous solution in the water storage cavity A604 and the water storage cavity B608 at the same speed, thereby forming a water storage cavity A604, a one-way electric valve pump component B611, and a one-way electric valve pump component A607. The aqueous solution flow component composed of the valve pump component A607, the water storage chamber B608, and the one-way electric valve pump component B611, and in conjunction with the known socket component 603 made of heat-conducting metal, can indirectly absorb the heat generated by the drive motor 2 through the socket component 603 when the aqueous solution flows in the one-way electric valve pump component A607 and the one-way electric valve pump component B611, thereby cooling the drive motor 2; and because the one-way electric valve pump component A607 and the one-way electric valve pump component B611 are metal pipes, they can also provide support and guiding services for the socket component 603 when in use.

[0069] Please refer to the above working process Figures 1 to 5 .

[0070] The following is the working process of the contact pressure increase feedback component 7:

[0071] When in use, if the photosensitive drum column 3 and the charging roller 4 expand due to the hot and humid environment, they will indirectly drive the two driving motors 2 to move away from each other. At this time, the inclined block 703 and the vertical rod 704 will move under this change. For details, please refer to the attached Figure 7 , Attachment Figure 8When the two driving motors 2 for driving move away from each other, the sleeve arc groove body 501 sleeved on the output shaft of the driving motor 2 and providing a sliding track for the sliding block 503 will move in the direction away from the long rod 504, that is, the vertical rod 704 will move to the right relative to the inclined block 703. At this time, under the action of the inclined groove 705 opened on the vertical rod 704 and the inclined block 703 without height change, the vertical rod 704 will move downward, and bring the electric contact piece B710 to contact the electric contact piece A709 located in the stabilizing kit B708. Since it is known that there is an electrical connection between the electric contact piece A709, the electric contact piece B710 and the main controller of the device, when the electric contact piece A709 contacts the electric contact piece B710, the main controller will control the warning light 711 to light up for warning. Therefore, the warning light 711 will light up to remind the corresponding operator. At this time, the contact pressure between the photosensitive drum cylinder 3 and the charging roller 4 increases, which is easy to be damaged.

[0072] Furthermore, by designing the contact pressure increase feedback component 7, it is possible to monitor and feedback the situation in which the materials of the photosensitive drum cylinder 3 and the charging roller 4 absorb moisture and expand due to heat in a high temperature and high humidity environment, thereby preventing the photosensitive drum cylinder 3 and the charging roller 4 from expanding and causing an increase in contact pressure between the two, thereby causing increased wear on the surface of the components and shortening their service life. At the same time, it can also avoid uneven charge distribution on the surface of the photosensitive drum cylinder 3, which affects the charging effect and the development process, and can effectively prevent the high temperature and high humidity environment from affecting its surface properties such as conductivity and friction coefficient, thereby affecting imaging stability.

[0073] Please refer to the above working process Figure 1 , Figure 4 , Figure 7 , Figure 8 .

[0074] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0075] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A developing device for developing uniform PCB solder mask holes, comprising: The device comprises a housing (1), a driving motor (2), a photosensitive drum cylinder (3), and a charging roller (4), wherein the charging roller (4) is arranged on one side of the photosensitive drum cylinder (3), and is characterized in that it also comprises: an axis parallelism detection component (5), an axis parallelism adjustment component (6), and a contact pressure increase feedback component (7); The axis parallelism detection assembly (5) is mainly used to monitor the axis parallelism of the drive motor (2) driving the photosensitive drum cylinder (3) and the charging roller (4) during installation and when the device is in use; The axis parallelism adjustment component (6) is mainly used to adjust the parallelism of the output axis of two driving motors (2) driving the photosensitive drum cylinder (3) and the charging roller (4), so as to ensure that the contact area between the two and the pressure at the contacting parts are evenly distributed; The contact pressure increase feedback component (7) is mainly used to feedback the situation in which the photosensitive drum cylinder (3) and the charging roller (4) materials absorb moisture and expand due to heat in a high temperature and high humidity environment.

2. The developing device for developing uniform PCB solder mask holes according to claim 1, characterized in that: The axis parallelism detection component (5) comprises a sleeved arc slot body (501) sleeved on the output shaft of the driving motor (2), an arc slot (502) is provided on a semicircular surface of the sleeved arc slot body (501), and a sliding block (503) is slidably connected in the arc slot (502).

3. The developing device for developing uniform PCB solder mask holes according to claim 2, characterized in that: A long bar (504) is transversely inserted into the non-sliding end of the sliding block (503), the long bar (504) is provided with an inner cavity, a magnetic part (505) is transversely slidably connected to the inner cavity of the long bar (504), and a Hall switch (506) is fixedly connected to the middle of the inner cavity wall of the long bar (504).

4. The developing device for developing uniform PCB solder mask holes according to claim 1, characterized in that: The axis parallelism adjustment component (6) includes a vertical slide groove (601) provided on the device housing (1), a sliding plate (602) is slidably connected in the vertical slide groove (601), the drive motor (2) is fixedly connected to the sliding plate (602), a sleeve (603) is sleeved on the main body shell of the drive motor (2), and the photosensitive drum column (3) is fixedly connected to the output end of the drive motor (2).

5. The developing device for developing uniform PCB solder mask holes according to claim 1, characterized in that: The inner wall of the device housing (1) is fixedly connected to a water storage cavity A (604) by screws, a movable plug A (605) is vertically slidably connected in the water storage cavity A (604), a spring body A (606) is fixedly connected to the upper surface of the movable plug A (605), the top end of the spring body A (606) is fixedly connected to the top wall of the inner cavity of the water storage cavity A (604), and a one-way electric valve pump component A (607) is fixedly connected to one side wall of the water storage cavity A (604).

6. The developing device for developing uniform PCB solder mask holes according to claim 5, characterized in that: The inner wall of the device housing (1) is fixedly connected to a water storage cavity B (608) by screws, and a movable plug B (609) is vertically slidably connected in the water storage cavity B (608). The bottom surface of the movable plug B (609) is fixedly connected to a spring body B (610), and the bottom end of the spring body B (610) is fixedly connected to the bottom of the inner cavity of the water storage cavity B (608). A one-way electric valve pump component B (611) is fixedly connected to a side wall of the water storage cavity B (608), and the end of the one-way electric valve pump component B (611) away from the water storage cavity B (608) is connected to the water storage cavity A (604), and the end of the one-way electric valve pump component A (607) away from the water storage cavity A (604) is connected to the water storage cavity B (608).

7. The developing device for developing uniform PCB solder mask holes according to claim 3, characterized in that: The contact pressure increase feedback component (7) comprises an inner slide groove (701) provided on a sliding block (503); a connecting piece (702) is fixedly connected to the end surface of the long bar (504); an end of the connecting piece (702) away from the long bar (504) is fixedly connected to an inclined block (703); a stabilizing kit A (706) is fixedly connected to the top of the inner slide groove (701); a spring body C (707) is fixedly connected to the inside of the stabilizing kit A (706); a vertical rod (704) is fixedly connected to the bottom end of the spring body C (707); an inclined groove (705) is provided on the vertical rod (704); and a warning light (711) is fixedly connected to the upper surface of the sliding block (503).

8. The developing device for developing uniform PCB solder mask holes according to claim 7, characterized in that: The bottom of the inner slide groove (701) is fixedly connected with a stabilizing kit B (708), the stabilizing kit B (708) is fixedly connected with an electric contact piece A (709), and the bottom of the vertical rod (704) is fixedly connected with an electric contact piece B (710).

9. The developing device for developing uniform PCB solder mask holes according to claim 7, characterized in that: The oblique groove (705) is matched with the oblique block (703), and the height of the oblique groove (705) gradually decreases from left to right.

Images