Plate-making pressing adjusting mechanism of printing plate-making machine

Abstract

The utility model discloses a plate-making pressing adjusting mechanism of a printing plate-making machine, and belongs to the technical field of printing plate-making machines. Comprising an adjusting piece and four pressing pieces, the adjusting piece comprises a base, a cavity is formed in the base, a first driving piece is installed in the cavity and drives the four pressing pieces to move synchronously, the four pressing pieces are arranged at the included angles of the top face of the base, each pressing piece comprises a supporting rod sliding on the top face of the base, and pressing plates are hinged to the top faces of the supporting rods; a second driving part is installed on the side face of the supporting rod, the output end of the second driving part extrudes one side of the bottom face of a pressing plate, a stand column is hinged to the other side of the bottom face of the pressing plate, a pressing plate is rotationally connected to the bottom end of the stand column, an elastic pad is installed on the bottom face of the pressing plate, and an optical fiber is arranged in the elastic pad. Each of the four groups of pressing pieces comprises an optical fiber pressure sensor, an optical detector, an analog-to-digital converter and a processor which are mounted in the cavity, and the optical fiber, the optical fiber pressure sensor, the optical detector, the analog-to-digital converter and the processor are electrically connected in sequence.

Description

Technical Field

[0001] The utility model relates to the technical field of printing plate-making machines, and particularly relates to a plate-making pressing and adjusting mechanism of a printing plate-making machine. Background Technique

[0002] A printing plate-making machine, also known as a CTP plate-making machine, is a prepress device for direct computer plate-making. It is generally divided into four categories: inner drum type, outer drum type, flat plate type, and curve type. CTP plate-making technology includes thermal imaging technology and photosensitive imaging technology, which are the most widely used and have the most stable performance.

[0003] Chinese Patent with application number CN201721059777.0 discloses a plate-making pressing and adjusting mechanism of a printing plate-making machine. The above-mentioned existing plate-making pressing and adjusting mechanism of a printing plate-making machine adopts this pressing and adjusting mechanism, which can meet the production and processing requirements of printing plates of different specifications in small and medium-sized enterprises by adjusting the position of the pressing and adjusting mechanism on the plate-making groove, ensure the production and processing quality of printed plates, and further save production costs.

[0004] However, after the above-mentioned existing plate-making pressing and adjusting mechanism of a printing plate-making machine starts the work of the plate-making machine and the printing plate is placed on the plate-making platform, when the telescopic main body pushes the pressing plate to descend until it presses the printing plate, since the downward pressure of the pressing plate is not controlled, the pressing plate is likely to cause extrusion damage to the printing plate. Content of the Utility Model

[0005] The purpose of the utility model is to provide a plate-making pressing and adjusting mechanism of a printing plate-making machine to solve the problems raised in the above background technique.

[0006] In view of the above problems, the technical solution proposed by the utility model is as follows:

[0007] A plate-making pressing and adjusting mechanism of a printing plate-making machine includes an adjusting member and four groups of pressing members. The adjusting member includes a base, and a cavity is arranged inside the base. A first driving member is installed in the cavity, and the first driving member drives the four groups of pressing members to move synchronously. The four groups of pressing members are arranged at the included angle on the top surface of the base. Each of the four groups of pressing members includes a support rod sliding on the top surface of the base. A pressing plate is hinged to the top surface of the support rod. A second driving member is installed on the side surface of the support rod, and the output end of the second driving member presses one side of the bottom surface of the pressing plate. The other side of the bottom surface of the pressing plate is hinged to a column, and the bottom end of the column is rotatably connected to a pressing plate. An elastic pad is installed on the bottom surface of the pressing plate, and an optical fiber is arranged inside the elastic pad. Each of the four groups of pressing members includes an optical fiber pressure sensor, a photodetector, an analog-to-digital converter, and a processor installed in the cavity, and the optical fiber, the optical fiber pressure sensor, the photodetector, the analog-to-digital converter, and the processor are electrically connected in sequence.

[0008] The beneficial effects of adopting the above further solution are as follows. When the plate to be printed is placed on the top surface of the base and the pressing plate is used to press the plate to be printed by the second driving member, since the connection between the elastic pad and the pressing plate is a hard plate, the bottom surface of the elastic pad is an arc-shaped elastic surface, and the elastic pad is filled with an elastic substance, and the optical fiber is surrounded by the elastic substance, the elastic pad will deform, causing the elastic substance inside it to deform, so that the optical path or optical characteristics of the optical fiber inside it change. The optical fiber pressure sensor measures the change of the optical signal to obtain the value of the pressure and emits a signal to the optical detector. After the optical detector converts the optical signal into an electrical signal, the analog-to-digital converter converts the analog electrical signal into a digital signal. After being processed by the processor, the digital signal will be displayed on the display screen of the printing plate making machine, so that the user can understand the pressure of the pressing plate on the plate to be printed, so as to enable the user to control the pressure of the pressing plate on the plate to be printed to prevent the plate to be printed from being damaged.

[0009] Further, the second driving member includes a motor installed on the side surface of the support rod, and the output end of the motor is drivingly connected with an eccentric wheel, and the eccentric wheel presses one side of the bottom surface of the pressing plate.

[0010] Further, a first groove is formed on the top surface of the support rod, and a first rotating shaft is connected to the inside of the first groove through a torsion spring, and the pressing plate is installed on the outside of the first rotating shaft.

[0011] The beneficial effects of adopting the above further solution are as follows. The eccentric wheel is the output end of the second driving member. The motor is used to drive the eccentric wheel to rotate, so that the eccentric wheel presses one side of the bottom surface of the pressing plate, and the other side of the pressing plate will move downward, so that the pressing plate presses the plate to be printed. At the same time, by adjusting the rotation angle of the eccentric wheel, the downward movement distance of the other side of the pressing plate can be changed, so as to change the pressure of the pressing plate on the plate to be printed. When the eccentric wheel no longer presses one side of the bottom surface of the pressing plate, under the action of the torsion spring, the pressing plate resets, and at this time the pressing plate moves away from the plate to be printed.

[0012] Further, a second groove is formed on the other side of the bottom surface of the pressing plate, and a second rotating shaft is connected to the inside of the second groove through a torsion spring, and the upright column is installed on the outside of the second rotating shaft.

[0013] Further, a spherical groove is formed at the bottom end of the upright column, a sphere is rotated inside the spherical groove, a connecting rod is installed on the bottom side of the sphere, and the free end of the connecting rod is connected to the center of the top surface of the pressing plate.

[0014] The beneficial effects of adopting the above further solution are as follows. Through the above installation method, the angles of the upright column and the pressing plate can be adjusted within a certain range. When fixing plates to be printed with different thicknesses, through the above installation method, the pressing plate can be completely attached to the plate to be printed.

[0015] Further, the first driving member includes a base installed in the cavity. Electric telescopic rods are installed on both sides of the base. The telescopic ends of the electric telescopic rods are connected to adjustment bars that slide in the cavity. Horizontal grooves are provided on the top surfaces of the adjustment bars. Four groups of inclined grooves are formed on the top surface of the base. Each of the four pressing members further includes a first adjustment block and a second adjustment block that are connected to each other. The first adjustment block slides in the horizontal groove, and the second adjustment block slides in the inclined groove.

[0016] Further, two pairs of limiting bars are also installed in the cavity. Limiting grooves are provided on the top surfaces of the two pairs of limiting bars. A pair of limiting blocks are installed on the bottom surface of each adjustment bar. The limiting blocks slide in the limiting grooves.

[0017] The beneficial effect of adopting the above further solution is that the change in the length of a pair of electric telescopic rods can cause a pair of adjustment bars to move. The limiting blocks and the limiting grooves can limit the moving direction of the pair of adjustment bars. At the same time, the limiting bars can support the pair of adjustment bars. When the pair of adjustment bars move, by using the horizontal grooves and the inclined grooves, and the first adjustment block and the second adjustment block, the four pressing members can be moved away from or closer to each other simultaneously, so as to adapt to printing plates of different sizes.

[0018] Compared with the prior art, the beneficial effect of the present utility model is as follows: For the plate-making pressing adjustment mechanism of the printing plate-making machine, when the printing plate to be printed is placed on the top surface of the base and the pressing plate presses the printing plate to be printed by using the second driving member, the elastic pad will deform, causing the elastic substance inside it to deform, so that the optical path or optical characteristics of the optical fiber inside it change. The optical fiber pressure sensor measures the change in the optical signal to obtain the pressure value and emits a signal to the optical detector. After the optical detector converts the optical signal into an electrical signal, the analog-to-digital converter converts the analog electrical signal into a digital signal. After being processed by the processor, the digital signal will be displayed on the display screen of the printing plate-making machine, enabling the user to understand the pressure of the pressing plate on the printing plate to be printed, so that the user can control the pressure of the pressing plate on the printing plate to be printed to prevent the printing plate to be printed from being damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the plate-making pressing adjustment mechanism of the printing plate-making machine disclosed in the embodiment of the present utility model;

[0020] Figure 2 It is a first exploded structural schematic diagram of the plate-making pressing adjustment mechanism of the printing plate-making machine disclosed in the embodiment of the present utility model;

[0021] Figure 3 It is a second exploded structural schematic diagram of the plate-making pressing adjustment mechanism of the printing plate-making machine disclosed in the embodiment of the present utility model;

[0022] Figure 4It is a system block diagram of a plate-making pressing adjustment mechanism of a printing plate-making machine disclosed in an embodiment of the present utility model.

[0023] In the figure: 100, adjusting member; 1001, base; 1002, inclined groove; 1003, limiting strip; 1004, limiting groove; 1005, adjusting strip; 1006, limiting block; 1007, transverse groove; 1008, machine base; 1009, electric telescopic rod; 200, pressing member; 2001, first adjusting block; 2002, second adjusting block; 2003, support rod; 2004, first groove; 2005, first rotating shaft; 2006, motor; 2007, eccentric wheel; 2008, pressing plate; 2009, second groove; 2010, second rotating shaft; 2011, column; 2012, sphere; 2013, connecting rod; 2014, pressing plate; 2015, elastic pad. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figure 1 - Figure 4, the present utility model provides a technical solution: a plate-making pressing and adjusting mechanism of a printing plate-making machine, which includes an adjusting member 100 and four groups of pressing members 200. The adjusting member 100 includes a base 1001. A cavity is provided inside the base 1001, and a first driving member is installed in the cavity. The first driving member drives the four groups of pressing members 200 to move synchronously. The four groups of pressing members 200 are arranged at the top surface angles of the base 1001. Each of the four groups of pressing members 200 includes a support rod 2003 that slides on the top surface of the base 1001. A pressing plate 2008 is hinged to the top surface of the support rod 2003. A second driving member is installed on the side of the support rod 2003, and the output end of the second driving member presses one side of the bottom surface of the pressing plate 2008. The other side of the bottom surface of the pressing plate 2008 is hinged to a column 2011. The bottom end of the column 2011 is rotatably connected to a pressing plate 2014. An elastic pad 2015 is installed on the bottom surface of the pressing plate 2014. An optical fiber is provided inside the elastic pad 2015. Each of the four groups of pressing members 200 includes an optical fiber pressure sensor, a photodetector, an analog-to-digital converter, and a processor installed in the cavity. The optical fiber, the optical fiber pressure sensor, the photodetector, the analog-to-digital converter, and the processor are electrically connected in sequence. The processor is connected to the display screen of the printing plate-making machine through a signal line and an interface. When the plate to be printed is placed on the top surface of the base 1001 and the pressing plate 2014 is used to press the plate to be printed by the second driving member, since the connection between the elastic pad 2015 and the pressing plate 2014 is a hard plate, the bottom surface of the elastic pad 2015 is an arc-shaped elastic surface, and the elastic pad is filled with an elastic substance. The optical fiber is surrounded by the elastic substance. Therefore, the elastic pad 2015 will deform, causing the elastic substance inside it to deform, so that the optical path or optical characteristics of the optical fiber inside it change. The optical fiber pressure sensor measures the change in the optical signal to obtain the value of the pressure and emits a signal to the photodetector. After the photodetector converts the optical signal into an electrical signal, the analog-to-digital converter converts the analog electrical signal into a digital signal. After the digital signal is processed by the processor, it will be displayed on the display screen of the printing plate-making machine, enabling the user to understand the pressure of the pressing plate 2014 on the plate to be printed, so that the user can control the pressure of the pressing plate 2014 on the plate to be printed to prevent the plate to be printed from being damaged.

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figure 1 - Figure 4, the present utility model provides a technical solution: a plate-making pressing and adjusting mechanism of a printing plate-making machine. The second driving member includes a motor 2006 installed on the side surface of the support rod 2003, and the output end of the motor 2006 is drivingly connected with an eccentric wheel 2007. The eccentric wheel 2007 presses one side of the bottom surface of the pressing plate 2008. A first groove 2004 is formed on the top surface of the support rod 2003, and a first rotating shaft 2005 is connected to the inside of the first groove 2004 through a torsion spring. The pressing plate 2008 is installed on the outside of the first rotating shaft 2005. The eccentric wheel 2007 is the output end of the second driving member. The motor 2006 drives the eccentric wheel 2007 to rotate, so that the eccentric wheel 2007 presses one side of the bottom surface of the pressing plate 2008, and the other side of the pressing plate 2008 will move downward, so that the pressing plate 2014 presses the plate to be printed. At the same time, by adjusting the rotation angle of the eccentric wheel 2007, the downward movement distance of the other side of the pressing plate 2008 can be changed, so as to change the pressure of the pressing plate 2014 on the plate to be printed. When the eccentric wheel 2007 no longer presses one side of the bottom surface of the pressing plate 2008, under the action of the torsion spring, the pressing plate 2008 resets, and at this time, the pressing plate 2014 moves away from the plate to be printed.

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] Please refer to Figure 1 - Figure 4, the present utility model provides a technical solution: a plate-making pressing and adjusting mechanism for a printing plate-making machine. The first driving member includes a machine base 1008 installed in the cavity. Electric telescopic rods 1009 are installed on both sides of the machine base 1008. The telescopic ends of the electric telescopic rods 1009 are both connected to adjusting bars 1005 that slide in the cavity. Horizontal grooves 1007 are provided on the top surfaces of the adjusting bars 1005. Four groups of inclined grooves 1002 are formed on the top surface of the base 1001. Each of the four pressing members 200 further includes a first adjusting block 2001 and a second adjusting block 2002 that are connected to each other. The first adjusting block 2001 slides in the horizontal groove 1007, and the second adjusting block 2002 slides in the inclined groove 1002. Two pairs of limiting bars 1003 are also installed in the cavity. Limiting grooves 1004 are provided on the top surfaces of the two pairs of limiting bars 1003. A pair of limiting blocks 1006 are installed on the bottom surfaces of the adjusting bars 1005. The limiting blocks 1006 slide in the limiting grooves 1004. The change in the lengths of a pair of electric telescopic rods 1009 can cause a pair of adjusting bars 1005 to move, and the limiting blocks 1006 and the limiting grooves 1004 can limit the moving directions of a pair of adjusting bars 1005. At the same time, the limiting bars 1003 can support a pair of adjusting bars 1005. When a pair of adjusting bars 1005 move, by using the horizontal grooves 1007 and the inclined grooves 1002, and the first adjusting block 2001 and the second adjusting block 2002, the four groups of pressing members 200 can move away from or close to each other simultaneously, so as to adapt to printing plates of different sizes.

[0030] Specifically, the working principle of the plate-making pressing and adjusting mechanism of this printing plate-making machine: When in use, the processor is connected to the display screen of the printing plate-making machine through a signal line and an interface. A pair of electric telescopic rods 1009, four groups of motors 2006, optical fibers, optical fiber pressure sensors, photodetectors, analog-to-digital converters, and the processor are all connected to the control module of the printing plate-making machine through lines. After the printing plate to be printed is placed on the top surface of the base 1001, the lengths of a pair of electric telescopic rods 1009 are changed to make the four groups of pressing members 200 move towards the four corners of the printing plate to be printed. Then, the four groups of motors 2006 are started. The motors 2006 are used to drive the eccentric wheels 2007 to rotate, so that the eccentric wheels 2007 squeeze one side of the bottom surface of the pressing plate 2008, and the other side of the pressing plate 2008 will move downward, so that the pressing plate 2014 presses the printing plate to be printed. Then, the fixed printing plate to be printed is sent into the plate module of the printing plate-making machine, and the printing plate-making machine performs plate-making processing on the printing plate to be printed by using the printing module.

Claims

1. A plate-making pressing and adjusting mechanism for a printing plate-making machine, characterized in that, It includes an adjusting member (100) and four groups of pressing members (200). The adjusting member (100) includes a base (1001). There is a cavity inside the base (1001). A first driving member is installed in the cavity. The first driving member drives the four groups of pressing members (200) to move synchronously. The four groups of pressing members (200) are arranged at the included angle on the top surface of the base (1001). Each of the four groups of pressing members (200) includes a support rod (2003) that slides on the top surface of the base (1001). A pressing plate (2008) is hinged to the top surface of the support rod (2003). A second driving member is installed on the side of the support rod (2003), and the output end of the second driving member presses one side of the bottom surface of the pressing plate (2008). On the other side of the bottom surface of the pressing plate (2008), there is a column (2011) hinged. The bottom end of the column (2011) is rotatably connected to a pressing plate (2014). An elastic pad (2015) is installed on the bottom surface of the pressing plate (2014). An optical fiber is provided inside the elastic pad (2015). Each of the four groups of pressing members (200) includes an optical fiber pressure sensor, a photodetector, an analog-to-digital converter, and a processor installed in the cavity, and the optical fiber, the optical fiber pressure sensor, the photodetector, the analog-to-digital converter, and the processor are electrically connected in sequence.

2. The plate-making pressing and adjusting mechanism of a printing plate-making machine according to claim 1, characterized in that, The second driving member includes a motor (2006) installed on the side of the support rod (2003), and the output end of the motor (2006) is drivingly connected to an eccentric wheel (2007), and the eccentric wheel (2007) presses one side of the bottom surface of the pressing plate (2008).

3. The plate-making pressing and adjusting mechanism of a printing plate-making machine according to claim 2, characterized in that, A first groove (2004) is opened on the top surface of the support rod (2003). A first rotating shaft (2005) is connected inside the first groove (2004) through a torsion spring. The pressing plate (2008) is installed on the outside of the first rotating shaft (2005).

4. The plate-making pressing and adjusting mechanism of a printing plate-making machine according to claim 1, characterized in that, A second groove (2009) is opened on the other side of the bottom surface of the pressing plate (2008). A second rotating shaft (2010) is connected inside the second groove (2009) through a torsion spring. The column (2011) is installed on the outside of the second rotating shaft (2010).

5. The plate-making pressing and adjusting mechanism of a printing plate-making machine according to claim 4, characterized in that, A spherical groove is opened at the bottom end of the column (2011). A sphere (2012) rotates inside the spherical groove. A connecting rod (2013) is installed on the bottom side of the sphere (2012). The free end of the connecting rod (2013) is connected to the center of the top surface of the pressing plate (2014).

6. The plate-making pressing and adjusting mechanism of a printing plate-making machine according to claim 1, characterized in that, The first driving member includes a base (1008) installed in the cavity. Electric telescopic rods (1009) are installed on both sides of the base (1008). The telescopic ends of the electric telescopic rods (1009) are connected to adjusting bars (1005) that slide in the cavity. Horizontal grooves (1007) are provided on the top surfaces of the adjusting bars (1005). Four inclined grooves (1002) are formed on the top surface of the base (1001). Each of the four pressing members (200) further includes a first adjusting block (2001) and a second adjusting block (2002) that are connected to each other. The first adjusting block (2001) slides in the horizontal groove (1007), and the second adjusting block (2002) slides in the inclined groove (1002).

7. The plate-making pressing and adjusting mechanism of a printing plate-making machine according to claim 6, characterized in that Two pairs of limiting bars (1003) are also installed in the cavity. Limiting grooves (1004) are provided on the top surfaces of the two pairs of limiting bars (1003). A pair of limiting blocks (1006) are installed on the bottom surface of each adjusting bar (1005). The limiting blocks (1006) slide in the limiting grooves (1004).

Images