Energy-saving printing equipment

Abstract

The utility model discloses energy-saving printing equipment, and relates to the technical field of printing machines. According to the technical scheme, the rotary screen cleaning device is characterized by comprising a supporting rod and a rotary screen cylinder rotationally connected to the supporting rod, a replacement assembly is rotationally connected to the supporting rod, a plurality of scrapers are slidably connected into the replacement assembly, a motor for controlling the replacement assembly to rotate is fixedly connected to one end of the supporting rod, and a plurality of pressure sensors electrically connected with the motor are arranged in the replacement assembly; when the pressure sensed by the pressure sensor is larger than a preset value, the motor drives the replacement assembly to rotate, more energy needs to be consumed for overall shutdown and restart of the printing machine, and after the procedure of replacing the scraper is simplified, the replacement efficiency is improved. The scraper can be rapidly replaced in the running process of the printing machine, the number of times of shutdown and restarting of the printing machine due to damage of the scraper is reduced, and power consumption of the printing machine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of printing machines, and more specifically, to an energy-saving printing device. Background Technique

[0002] Since the invention of the rotary screen printing machine in the 1960s of the last century, it has experienced a development process of more than half a century and has become the mainstream of current textile printing in China. Its advantages are easy to operate, wide variety adaptability, large and adjustable sizing amount, strong and bright pattern colors, high production speed, etc.

[0003] During the daily use of the squeegee on the rotary screen printing machine, it often wears and curls at the contact with the rotary screen cylinder. When the curl is large, it will exacerbate the rigid collision between the squeegee and the rotary screen cylinder, resulting in a notch damage to the blade edge of the squeegee. It is necessary to stop the machine and disassemble the rotary screen cylinder to replace the damaged squeegee. After replacement, it is necessary to adjust the position of the newly replaced squeegee and re-align the printing position of the rotary screen cylinder, which takes a lot of time and the process is relatively cumbersome, and the production efficiency is low. Therefore, it is necessary to set up a structure to solve the problem that the rotary screen printing machine takes a long time and the process is cumbersome to replace the damaged squeegee during operation, resulting in low production efficiency.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Content of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the purpose of the utility model is to provide an energy-saving printing device, which solves the problem that the rotary screen printing machine takes a long time and the process is cumbersome to replace the damaged squeegee during operation, resulting in low production efficiency through the setting of the structure.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions: the energy-saving printing device includes a support rod and a rotary screen cylinder rotatably connected to the support rod. A replacement component is rotatably connected to the support rod. A plurality of squeegees are slidably connected in the replacement component. One end of the support rod is fixedly connected with a motor for controlling the rotation of the replacement component. A plurality of pressure sensors electrically connected to the motor are arranged in the replacement component. When the pressure sensed by the pressure sensor is greater than a preset value, the motor drives the replacement component to rotate.

[0007] The utility model is further arranged as follows: when the blade edge of the squeegee is located below the replacement component, the blade edge of the squeegee abuts against the inner wall of the rotary screen cylinder. When the blade edge of the squeegee is located above the replacement component, the blade edge of the squeegee is separated from the inner wall of the rotary screen cylinder.

[0008] The present utility model is further configured as follows: The replacement assembly includes a rotating member and a plurality of groups of clamping members arrayed on the outer wall of the rotating member. The scraping blade is slidably connected within the clamping members of the same group, and the pressure sensor is fixedly connected within the clamping member near the scraping blade.

[0009] The present utility model is further configured as follows: The clamping members of the same group are fixedly connected to the outer peripheral wall of the rotating member along the length direction of the rotating member, and the distance between adjacent clamping members of the same group is the same.

[0010] The present utility model is further configured as follows: A reserved cavity is provided between the clamping member and the rotating member. One side of the clamping member facing the rotating member is provided with a sliding groove communicating with the reserved cavity, and the scraping blade is slidably connected within the reserved cavity and the sliding groove.

[0011] The present utility model is further configured as follows: The cross-sectional area of the sliding groove decreases from the end close to the rotating member to the end far from the rotating member. When the cutting edge of the scraping blade abuts against the inner wall of the circular mesh cylinder, the side wall of the scraping blade fits against the side wall of the sliding groove.

[0012] The present utility model is further configured as follows: The difference between the number of groups of clamping members on the rotating member and the maximum number of rotations of the rotating member during a single operation is one.

[0013] In summary, the present utility model has the following beneficial effects:

[0014] A pressure sensor is provided on the replacement assembly. After the scraping blade is damaged, the rolled edge will increase the friction with the inner wall of the circular mesh cylinder. The pressure sensor in the replacement assembly will sense a greater pressure. When the pressure received at the position of the replacement assembly close to the scraping blade is large, the motor drives the replacement assembly to rotate to replace the scraping blade in contact with the inner wall of the circular mesh cylinder, avoiding greater damage to the scraping blade and enabling the inspection and replacement of the scraping blade in the replacement assembly to be unified after a certain period of production tasks are completed, reducing the procedures and time for replacing the damaged scraping blade during the production process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is Figure 1 the enlarged schematic diagram of part A in

[0017] Figure 3 is a schematic structural diagram of the rotating member of the present utility model;

[0018] Figure 4 is Figure 3 the enlarged schematic diagram of part B in

[0019] Figure 5 is a schematic structural diagram of the support rod in the present utility model.

[0020] In the figure: 1, support rod; 2, circular screen cylinder; 3, rotating member; 4, clamping member; 5, sliding groove; 6, reserved cavity; 7, scraper; 8, motor; 9, pressure sensor. Specific embodiments

[0021] The following will describe the present utility model in detail with reference to the accompanying drawings and embodiments.

[0022] This energy-saving printing device, as Figures 1 to 5 shown, includes a support rod 1 and a circular screen cylinder 2 rotatably connected to the support rod 1. The support rod 1 is located above the fabric to be printed as the support of the circular screen cylinder 2 to maintain the stability of the circular screen cylinder 2 during rotation. A replacement assembly is rotatably connected to the support rod 1. A plurality of scrapers 7 are slidably connected in the replacement assembly. The cutting edge of the scraper 7 faces away from the rotating member 3. The rotary screen printing machine rotates the circular screen cylinder 2 to scrape the side of the cutting edge of the scraper 7 on the inner wall of the circular screen cylinder 2. The scraper 7 smears the color paste on the mesh pattern of the circular screen cylinder 2 and squeezes it so that the color paste penetrates through the mesh pattern and is printed on the fabric to be printed. One end of the support rod 1 is fixedly connected with a motor 8 for controlling the rotation of the replacement assembly. A plurality of pressure sensors 9 electrically connected to the motor 8 are arranged in the replacement assembly. A rotation pressure value is preset on the pressure sensor 9. When there is a rolled edge on the cutting edge of the scraper 7, it can be polished and repaired. If it continues to be used after the rolled edge, the friction between the cutting edge of the scraper 7 and the inner wall of the circular screen cylinder 2 will increase, resulting in increased wear on the inner wall of the circular screen cylinder 2, affecting the service life of the circular screen cylinder 2, and the uneven force on the circular screen cylinder 2 will cause the color paste scraped out from the circular screen cylinder 2 to be uneven, affecting the printing quality. When the pressure sensed by the pressure sensor 9 is greater than the rotation pressure value, the motor 8 drives the replacement assembly to rotate, and the scraper 7 in contact with the circular screen cylinder 2 rotates and separates from the circular screen cylinder 2. After rotation, another scraper 7 that was originally separated from the circular screen cylinder 2 comes into contact with the circular screen cylinder 2, achieving the effect of avoiding more adverse effects caused by the scraper 7 still being in contact with the circular screen cylinder 2 for printing work after being damaged, and the scrapers 7 in the replacement assembly can be inspected and replaced uniformly after a period of production tasks are completed, reducing the process and time for replacing the damaged scrapers 7 during the production process and improving the production efficiency.

[0023] As Figure 5As shown in the figure, when the rotary screen cylinder 2 rotates, when the blade of the scraper 7 is located below the replacement component, the blade of the scraper 7 slides out of the side of the replacement component away from the support rod 1 under the influence of its own gravity, and the blade of the scraper 7 abuts against the inner wall of the rotary screen cylinder 2. When the blade of the scraper 7 is located above the replacement component, the blade of the scraper 7 slides and is received in the replacement component under the influence of the gravity of the scraper 7 itself, and the blade of the scraper 7 is separated from the inner wall of the rotary screen cylinder 2, so that only one blade of the scraper 7 abuts against the inner wall of the rotary screen cylinder 2 at the same time, avoiding friction between the blades of the remaining scrapers 7 and the inner wall of the rotary screen cylinder 2. In the present utility model, the overall shutdown and restart of the printing machine consume a lot of energy. After simplifying the procedure for replacing the scraper 7, the scraper 7 can be quickly replaced during the operation of the printing machine, reducing the number of times of shutting down and restarting the printing machine due to damage of the scraper 7, and reducing the power consumption of the printing machine.

[0024] As Figures 1 to 5 shown, the replacement component includes a rotating member 3 and a plurality of groups of clamping members 4 arranged in an array on the outer wall of the rotating member 3. The rotating member 3 is set as a rotating ring sleeved on the support rod 1. In this embodiment, three groups of clamping members 4 are provided, a total of three scrapers 7, and the angles formed between the side walls of adjacent scrapers 7 are all 120 degrees. The rotating member 3 rotates 120 degrees each time driven by the motor 8. The clamping members 4 of the same group are fixedly connected to the rotating member 3 along the length direction of the rotating member 3, and the distances between adjacent clamping members 4 of the same group are the same, ensuring that each part of the scraper 7 along the length direction is evenly stressed, reducing the knocking of the scraper 7 caused by uneven stress, and at the same time making the printed patterns of the same picture area have uniform colors. The scraper 7 is slidably connected in the clamping members 4 of the same group. A reserved cavity 6 is provided between the clamping member 4 and the rotating member 3. One side of the clamping member 4 facing the rotating member 3 is provided with a sliding groove 5 communicating with the reserved cavity 6. The scraper 7 is slidably connected in the reserved cavity 6 and the sliding groove 5. The length of the reserved cavity 6 is greater than the distance from the end of the clamping member 4 away from the rotating member 3 to the inner wall of the rotary screen cylinder 2, so that the blade of the scraper 7 can be received in the clamping member 4 after sliding. A plurality of pressure sensors 9 are fixedly connected to the position in the clamping member 4 close to the scraper 7. The plurality of pressure sensors 9 can monitor the pressure at different positions on the scraper 7. The pressure sensors 9 detect the pressure value on the scraper 7 in the direction of the contact position between the scraper 7 and the rotary screen cylinder 2 and compare it with the rotation pressure value.

[0025] As Figure 5As shown, the cross-sectional area of the sliding groove 5 decreases from the end close to the rotating member 3 to the end far from the rotating member 3. When the blade of the squeegee 7 abuts against the inner wall of the screen cylinder 2, the side wall of the squeegee 7 fits against the side wall of the sliding groove 5. The length of the squeegee 7 protruding from the clamping member 4 is restricted by the fitting of the side wall of the sliding groove 5 and the side wall of the squeegee 7, so that the length of the squeegee 7 protruding from the clamping member 4 is the same after each rotation. This makes the frictional force between the replaced squeegee 7 and the screen cylinder 2 the same as that between the squeegee 7 before replacement, which helps with the setting of the rotation pressure value and also helps to ensure that the amount of slurry scraped by the two squeegees 7 on the screen cylinder 2 before and after replacement is the same, avoiding a large deviation in the color of the printing pattern before and after replacing the squeegee 7.

[0026] As Figure 1 , Figure 5 shown, at the positions of the two ends of the rotating member 3 close to the support rod 1, the positions corresponding to the clamping members 4 are marked with group numbers one, two, and three. Each group number corresponds to a squeegee 7. When the rotating member 3 rotates, it rotates from one to two to three. The staff can check the rotation position of the rotating member 3 in real time. The difference between the number of groups of the clamping members 4 on the rotating member 3 and the maximum number of rotations of the rotating member 3 in a single operation is one. When the number of rotations of the rotating member 3 is two, and the pressure sensed by the pressure sensor 9 is greater than the rotation pressure value again, it indicates that there are significant problems with the components on this support rod 1. The pressure sensor 9 transmits an electrical signal to the drive system of the printing machine, and the printing machine stops, and the staff manually checks the components on this support rod 1.

[0027] Working principle:

[0028] First, assemble the rotating member 3 at an appropriate position on the support rod 1, then install the screen cylinder 2 on the support rod 1, and slide three squeegees 7 through the three groups of clamping members 4 from the support rod 1 respectively, so that the blade of the squeegee 7 corresponding to the clamping member 4 group numbered one faces downward. The squeegee 7 facing downward slides away from the rotating member 3 under the action of gravity in the sliding area composed of the reserved cavity 6 and the sliding groove 5. The side wall of the squeegee 7 facing downward fits against the side wall of the sliding groove 5. The blade of the squeegee 7 facing downward protrudes from the clamping member 4 and abuts against the inner wall of the screen cylinder 2. After adjusting the preset value of the pressure sensor 9, after assembling the motor 8 at one end of the support rod 1, electrically connect the pressure sensor 9 to the motor 8.

[0029] Start the printing machine. The rotary screen cylinder 2 rotates. The inner wall of the rotary screen cylinder 2 rubs against the blade of the squeegee 7 corresponding to Group No. 1, squeezing the color paste onto the fabric to be printed. As the printing machine runs, the blade of the squeegee 7 rubs against the inner wall of the rotary screen cylinder 2 to form a rolled edge. The frictional pressure between the rolled-edge blade of the squeegee 7 and the rotary screen cylinder 2 becomes larger. When the pressure is greater than the preset value of the pressure sensor 9, the pressure sensor 9 sends an electrical signal to the motor 8. The motor 8 drives the rotating member 3 to rotate. The clamping member 4 group with Group No. 2 rotates to the position of the clamping member 4 group originally with Group No. 1. The blade of the squeegee 7 corresponding to the clamping member 4 group with Group No. 1 faces downward. The downward-facing squeegee 7 slides away from the rotating member 3 under the influence of gravity in the sliding area composed of the reserved cavity 6 and the sliding groove 5. The side wall of the downward-facing squeegee 7 fits against the side wall of the sliding groove 5. At the same time, the position of the blade of the squeegee 7 corresponding to the clamping member 4 group with Group No. 1 rotates to a position higher than the rotating member 3 as the rotating member 3 rotates. The blade of the squeegee 7 slides towards the rotating member 3 under the influence of the gravity of the squeegee 7 itself in the sliding area composed of the reserved cavity 6 and the sliding groove 5. The blade of the squeegee 7 is received in the sliding groove 5 and separated from the inner wall of the rotary screen cylinder 2.

[0030] During the operation of a single production task of the printing machine, when the rotating member 3 rotates twice and the pressure sensed by the pressure sensor 9 is greater than the preset value again, it indicates that there are relatively large problems with the components on the support rod 1 during the operation. The printing machine stops, and the components on the support rod 1 are manually inspected.

[0031] After the production task for a period of time is completed, the rotated squeegees 7 are disassembled and inspected one by one. The squeegees 7 with less damage are repaired and reused, and the squeegees 7 with more serious damage are replaced.

[0032] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. An energy-saving printing device, comprising a support rod (1) and a round screen cylinder (2) rotatably connected to the support rod (1), characterized in that: A replacement component is rotatably connected to the support rod (1), a plurality of scrapers (7) are slidably connected inside the replacement component, one end of the support rod (1) is fixedly connected to a motor (8) for controlling the rotation of the replacement component, a plurality of pressure sensors (9) electrically connected to the motor (8) are provided inside the replacement component, and when the pressure sensed by the pressure sensor (9) is greater than a preset value, the motor (8) drives the replacement component to rotate.

2. The energy-saving printing equipment according to claim 1, characterized in that: When the blade of the scraper (7) is located below the replacement component, the blade of the scraper (7) abuts against the inner wall of the round mesh cylinder (2); when the blade of the scraper (7) is located above the replacement component, the blade of the scraper (7) is separated from the inner wall of the round mesh cylinder (2).

3. The energy-saving printing equipment according to claim 2 is characterized in that: The replacement assembly comprises a rotating member (3) and a plurality of groups of clamping members (4) arranged in an array on the outer wall of the rotating member (3); the scraper (7) is slidably connected in the same group of clamping members (4); and the pressure sensor (9) is fixedly connected in the position of the clamping member (4) close to the scraper (7).

4. The energy-saving printing device according to claim 3 is characterized in that: The clamping members (4) in the same group are fixedly connected to the outer peripheral wall of the rotating member (3) along the length direction of the rotating member (3), and the distances between adjacent clamping members (4) in the same group are the same.

5. The energy-saving printing device according to claim 4 is characterized in that: A reserved cavity (6) is provided between the clamping member (4) and the rotating member (3); a sliding groove (5) communicating with the reserved cavity (6) is provided on the side of the clamping member (4) facing the rotating member (3); and the scraper (7) is slidably connected in the reserved cavity (6) and the sliding groove (5).

6. The energy-saving printing device according to claim 5, characterized in that: The cross-sectional area of ​​the sliding groove (5) decreases from the end close to the rotating member (3) to the end away from the rotating member (3), and when the blade of the scraper (7) abuts against the inner wall of the round mesh cylinder (2), the side wall of the scraper (7) fits against the side wall of the sliding groove (5).

7. The energy-saving printing device according to claim 3 is characterized in that: The difference between the number of groups of clamping members (4) on the rotating member (3) and the maximum number of rotations of the rotating member (3) in a single operation is one.

Images