Double-tool trolley tool changing mechanism

Abstract

The present application belongs to the cutting trolley technical field of digital flat die cutting industry, and particularly relates to a double-knife trolley knife changing mechanism, comprising a digital flat die cutting device, the digital flat die cutting device is provided with a trolley, the trolley is provided with a magnetic cylinder, a knife holder, a cutting knife and an indentation knife, the magnetic cylinder is provided with the knife holder moving up and down, the cutting knife is directly fixed on the knife holder, the indentation knife is fixed on the knife holder through the knife changing mechanism, the knife changing mechanism comprises a fixed block, a movable component, a poking component and a driving component, and the technical problem of the existing double-knife trolley being relatively bulky is solved.

Description

Technical Field

[0001] This invention belongs to the technical field of cutting carriages in the digital flatbed die-cutting industry, and specifically relates to a double-blade carriage tool changing mechanism. Background Technology

[0002] Currently, the cutting module in the digital flatbed die-cutting industry is called a carriage. The carriage consists of a carriage back plate, coil magnetic cylinder, blade, and pen. The blade and pen of the carriage move downwards by cutting the magnetic field through an energized coil and are reset by a pressure spring. However, currently, the blade holder and pen holder of the carriage are arranged horizontally, which increases the overall lateral dimension of the carriage. Without changing the overall size of the product, this results in a smaller working area for the carriage, thus affecting the range of sizes the machine can cut.

[0003] Application No. 2018221946464 discloses a novel dual-magnetic-cylinder carriage. The dual-magnetic-cylinder carriage uses two magnetic cylinders to control the cutting blade and the indentation blade respectively. Because there are two magnetic cylinders, the carriage is very heavy and has a large inertia during processing, which reduces the carriage's flexibility and causes deviations during cutting and indentation. Therefore, a new tool changing method is needed to reduce the weight of the existing tool changing carriage. Summary of the Invention

[0004] The purpose of this invention is to provide a double-blade carriage tool changing mechanism that overcomes the shortcomings of the prior art and solves the technical problem that the two magnetic cylinders of the existing double-blade carriage are relatively bulky.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A dual-blade carriage tool changing mechanism includes a digital flatbed die-cutting machine. The digital flatbed die-cutting machine has a carriage equipped with a magnetic cylinder, a tool holder, a cutting blade, and a creasing blade. The magnetic cylinder has a vertically movable tool holder, and the cutting blade is directly fixed to the tool holder. The creasing blade is characterized in that the creasing blade is fixed to the tool holder via a tool changing mechanism. The tool changing mechanism includes a fixed block, a movable part, a toggle part, and a drive part. The fixed block has a vertically oriented through hole in the middle. The upper part of the movable part is inserted into the through hole, and the lower part of the movable part has a fixing hole for connecting to the creasing blade. The part has a horizontal waist hole, and the actuating component is a crank structure. One end of the crank structure is an actuating post, and the other end is a drive shaft. The actuating component is set in the through hole through the drive shaft, and the actuating post is inserted into the waist hole. The actuating component rotates around the drive shaft. During the rotation, the movement of the movable component is controlled by the cooperation of the actuating post and the waist hole. The drive shaft extends to the outside of the fixed block, and the end of the drive shaft is adapted to the drive component. The drive component drives the drive shaft to rotate. The actuating component is fixed in the fixed block and has a self-locking structure at both the highest and lowest positions.

[0007] Furthermore, the drive component is fixed on the digital flatbed die-cutting equipment and located at the end of one side of the moving carriage. When the carriage moves to the end position, the drive component is connected to the end of the drive shaft.

[0008] Furthermore, the end of the drive shaft has a spline structure, and the drive components include a stepper motor and a spline sleeve. The spline sleeve is connected to the stepper motor and is driven to rotate by it. The spline structure and the spline sleeve are loosely fitted.

[0009] Furthermore, the spline structure has a cross-shaped head, and the spline sleeve has a cylindrical structure with a cross-shaped groove on the cylindrical structure.

[0010] Furthermore, a stop pin is provided on the side of the end position of the drive shaft. The drive component includes a fixed shaft, a torsion spring, a bearing, and a curved slide sleeve. The bottom of the curved slide sleeve is fixed to the fixed shaft by the bearing and fixed by the torsion spring, so that it can be offset at a small angle. The end face of the curved slide sleeve is provided with two symmetrical curved grooves. When the drive shaft moves in the direction of the curved slide sleeve, the drive shaft is driven to rotate 180 degrees through the curved grooves and the stop pin.

[0011] Furthermore, the drive shaft is fixed to the moving part by a fixed plate. The fixed plate is provided with a positioning mechanism, which includes a vertical positioning hole, a threaded post, a pressure spring, and a steel ball. The vertical positioning hole is set on the fixed plate and located directly above the drive shaft. The steel ball is connected to the threaded post through the pressure spring. The upper end of the vertical positioning hole is provided with an internal thread. The threaded post is pressed into the vertical positioning hole through the internal thread. The steel ball is pushed against the drive shaft under the action of the pressure spring. The drive shaft is provided with two positioning grooves that cooperate with the steel ball.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention discloses a dual-blade trolley tool changing mechanism, which employs a magnetic cylinder. The cutting blade is directly fixed to the magnetic cylinder, and the indentation blade is fixed to the magnetic cylinder through a tool changing mechanism. The tool changing mechanism controls the up and down movement of the indentation blade. When the indentation blade is at its highest position, its bottom is higher than the bottom of the cutting blade. When the magnetic cylinder descends, the indentation blade is suspended in the air when the cutting blade touches the object to be cut. When the indentation blade is at its lowest position, its bottom is lower than the bottom of the cutting blade. When the magnetic cylinder descends, the cutting blade is suspended in the air when the indentation blade touches the object to be cut first. This realizes the function of interchangeable cutting blade and indentation blade. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the tool changing mechanism installed on the double-tool carriage.

[0015] Figure 2 This is a structural diagram of a double-blade carriage tool changer installed on a digital flatbed die-cutting machine.

[0016] Figure 3This is an exploded structural diagram of a stepper motor-type tool changer.

[0017] Figure 4 This is a schematic diagram of a tool changer with a curved slider.

[0018] Figure 5 This is a schematic diagram of the drive component in a curved slider structure.

[0019] Figure 6 This is a structural diagram of the positioning mechanism. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1

[0022] like Figure 1-5 As shown, the present invention discloses a dual-blade carriage tool changing mechanism, comprising a digital flatbed die-cutting device 1, a carriage 2 mounted on the digital flatbed die-cutting device 1, a magnetic cylinder 3, a tool holder 4, a cutting blade 5, and a creasing blade 6 mounted on the carriage 2. The magnetic cylinder 3 has a vertically movable tool holder 4, and the cutting blade 5 is directly fixed to the tool holder 4. The creasing blade 7 is characterized in that it is fixed to the tool holder via a tool changing mechanism 6. The tool changing mechanism 6 includes a fixed block 61, a movable part 62, a toggle part 63, and a drive part 8. The fixed block 61 has a vertically oriented through hole in the middle, the upper part of the movable part 62 is inserted into the through hole, the lower part of the movable part 62 has a fixed hole for connecting to the creasing blade, and the upper part of the movable part 62 has a horizontally oriented waist hole. The moving part 63 is a crank structure, with a shift pin at one end and a drive shaft at the other end. The shifting part is set in the through hole through the drive shaft and the shift pin is inserted into the waist hole. The shifting part rotates around the drive shaft. During the rotation, the up and down movement of the moving part is controlled by the cooperation of the shift pin and the waist hole. The drive shaft extends to the outside of the fixed block and the end of the drive shaft is adapted to the drive part. The drive shaft is driven to rotate by the drive part 8. The drive part is fixed on the digital flatbed die-cutting equipment and is located at the end of one side of the carriage. When the carriage moves to the end position, the drive part is connected to the end of the drive shaft. The shifting part is fixed in the fixed block and has a self-locking structure at both the highest and lowest positions.

[0023] Example 2

[0024] like Figure 3As shown, the end of the drive shaft has a spline structure. The drive component 8 includes a stepper motor and a spline sleeve 64. The spline sleeve 64 is connected to the stepper motor and is driven to rotate by it. The spline structure and the spline sleeve are loosely fitted.

[0025] Furthermore, the spline structure has a cross-shaped head, and the spline sleeve has a cylindrical structure with a cross-shaped groove on the cylindrical structure.

[0026] Example 3

[0027] like Figure 4 , Figure 5 As shown, a stop pin 65 is provided on the side of the end position of the drive shaft. The drive component 8 includes a fixed shaft 81, a torsion spring, a bearing, and a curved slide sleeve 82. The bottom of the curved slide sleeve is fixed to the fixed shaft by the bearing and fixed by the torsion spring, so that it can be offset at a small angle. The end face of the curved slide sleeve is provided with two symmetrical curved grooves. When the drive shaft moves in the direction of the curved slide sleeve, the drive shaft is driven to rotate 180 degrees through the curved grooves and the stop pin.

[0028] Example 4

[0029] like Figure 6 As shown, the drive shaft is fixed to the movable part by a fixed plate 9. The fixed plate 9 is provided with a positioning mechanism, which includes a vertical positioning hole 91, a threaded post 92, a pressure spring and a steel ball 93. The vertical positioning hole is set on the fixed plate and located directly above the drive shaft. The steel ball is connected to the threaded post through the pressure spring. The upper end of the vertical positioning hole is provided with an internal thread. The threaded post is pressed into the vertical positioning hole through the internal thread. The steel ball is pushed against the drive shaft under the action of the pressure spring. The drive shaft is provided with two positioning grooves 93 that cooperate with the steel ball. Each time this crank structure is rotated, the rotation angle is 180 degrees. The drive shaft of the crank structure pushes the tool holder to start or stop the cutting. The purpose of positioning is to keep the starting and stopping positions stable and prevent the tool holder position from shifting due to equipment vibration or external factors. The steel balls are squeezed by the pressure spring and are set in a slightly shallow annular steel ball slide 95 on the thick end of the crank. On the slide in the direction of crank turning, there are deeper positioning grooves, which are exactly half-filled with the steel balls and are 180 degrees apart. In this way, unless a large external force is applied, it is not easy to push the crank to rotate.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A dual-blade carriage blade changing mechanism, comprising a digital flatbed die-cutting device, wherein the digital flatbed die-cutting device is provided with a carriage, the carriage being provided with a magnetic cylinder, a blade holder, a cutting blade, and a creasing blade, the magnetic cylinder being provided with a vertically movable blade holder, and the cutting blade being directly fixed on the blade holder, characterized in that: The indentation tool is fixed to the tool holder via a tool changing mechanism. The tool changing mechanism includes a fixed block, a movable component, a shifting component, and a driving component. The fixed block has a vertically oriented through hole in the center. The upper part of the movable component is inserted into the through hole, and the lower part of the movable component has a fixed hole for connecting to the indentation tool. The upper part of the movable component has a horizontally oriented waist hole. The shifting component is a crank structure, with one end being a shifting pin and the other end being a drive shaft. The shifting component is positioned within the through hole via the drive shaft, and the shifting pin is inserted into the waist hole. The shifting component rotates around the drive shaft, and during rotation, the rotation is controlled by the interaction of the shifting pin and the waist hole. The movable part moves up and down. The drive shaft extends outside the fixed block, and its end is adapted to the drive component. The drive component drives the drive shaft to rotate. The drive shaft is fixed to the movable part by a fixed plate, and the fixed plate is provided with a positioning mechanism. The drive component is fixed on the digital flatbed die-cutting equipment and is located at the end of one side of the carriage. When the carriage moves to the end position, the drive component connects with the end of the drive shaft. The end of the drive shaft has a spline structure. The drive component includes a stepper motor and a spline sleeve. The spline sleeve is connected to the stepper motor and is driven to rotate by it. The spline structure and the spline sleeve are loosely fitted.

2. The double-tool carriage tool changing mechanism according to claim 1, characterized in that: The spline structure has a cross-shaped head, and the spline sleeve has a cylindrical structure with a cross-shaped groove.

3. The double-tool carriage tool changing mechanism according to claim 1, characterized in that: A stop pin is provided on the side of the end position of the drive shaft. The drive component includes a fixed shaft, a torsion spring, a bearing, and a curved slide sleeve. The bottom of the curved slide sleeve is fixed to the fixed shaft by the bearing and fixed by the torsion spring, so that it can be offset at a small angle. The end face of the curved slide sleeve is provided with two symmetrical curved grooves. When the drive shaft moves in the direction of the curved slide sleeve, the drive shaft is driven to rotate 180 degrees through the curved grooves and the stop pin.

4. The double-tool carriage tool changing mechanism according to claim 1, characterized in that: The actuating component is fixed inside the fixed block and has a self-locking structure at both the highest and lowest positions.

5. The double-tool carriage tool changing mechanism according to claim 1, characterized in that: The positioning mechanism includes a vertical positioning hole, a threaded post, a pressure spring, and a steel ball. The vertical positioning hole is set on the fixed plate and located directly above the drive shaft. The steel ball is connected to the threaded post through the pressure spring. The upper end of the vertical positioning hole is provided with an internal thread. The threaded post is pressed into the vertical positioning hole through the internal thread. The steel ball is pressed against the drive shaft under the action of the pressure spring. The drive shaft is provided with two positioning grooves that cooperate with the steel ball.

6. The double-tool carriage tool changing mechanism according to claim 5, characterized in that: The drive shaft is also equipped with an annular steel ball slide.

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