CN100398257C - Flatbed CNC cutting and plotting machine linkage head - Google Patents

Abstract

The utility model relates to a linkage type head of a flat type numerically controlled cutting and plotting machine. The invention belongs to the components of a numerically controlled flat-panel cutting and drawing machine. The purpose of the invention is to provide a linkage type head of a flat-bed numerical control cutting and plotting machine which is driven by linkage of a bar gear shaft to realize conversion of a cutter and a pen. The feature is that a stepping motor is connected to a rack linkage, and the rack linkage is equipped with a knife holder, a knife holder, a pen holder and a pen holder through the knife holder rack. There are also reversing gears, eccentric wheels, photocells, tool holder racks, adjusting screws, locking screws, etc. Simple structure, small size, high cutting precision, high strength, wear resistance, low noise and long service life. Only one ordinary motor and one set of transmission mechanism are needed.

Description

Flatbed CNC cutting and plotting machine linkage head

technical field

The invention belongs to the components of a numerically controlled flat-panel cutting and drawing machine.

Background technique

The machine head is a very important part of the flatbed CNC cutting and plotting machine, which drives the movement and conversion of the knife and pen. At present, the heads of several small cutting and plotting machines that exist in China are generally designed to use a stepping motor with output shafts at both ends, and each is equipped with a set of transmission mechanisms to form a 180-degree rotation angle; the knife and pen are driven separately. The positioning of the external slider and the external adjustment knife. The main disadvantages of this structure are: the transmission motor needs a specific model; the structure is complex, the volume is large and heavy, there are many faults, and the precision is not high.

Contents of the invention

The object of the present invention is to provide a flat-bed numerically controlled cutting and drawing machine linkage type head that adopts the linkage drive of the bar gear shaft to realize the conversion of the cutter and the pen. The present invention is accomplished in the following manner: a linkage head of a flat-panel CNC cutting and plotting machine, which is characterized in that it is connected to a rack linkage 14 by a stepping motor 1, and the rack linkage 14 is passed through a knife Clamp rack 9 is equipped with knife holder 6, knife bar 5 and is equipped with pen holder 7, pen holder 8 by pen holder rack 12; One end, the other end of connecting rod 4 links to each other with tool clip rack 9; Tool clip 6 and knife bar 5 are installed on tool clip rack 9, pen clip 7, pen holder 8 are installed on pen clip rack 12; There is a reversing gear 11 in the middle of the rack 9 and the clip rack 12; the reversing gear 11 is positioned on the rack linkage 14; the above-mentioned eccentric wheel 3 has a gap on the same centerline as the photocell 2; Two adjustment screws 10 are respectively arranged in the waist-shaped grooves on both sides of 14; locking screw rods 13 are also respectively housed on the knife holder 6 and the pen holder 7. The present invention has the following advantages compared with similar technology-related products: (1) adopts a single-end drive of a stepping motor, does not need a specific type of motor, and can use a general general motor; (2) the machine head is a rack-type double slider , A reversing gear is designed in the middle, the material is 45# high-quality carbon structural steel, and the surface hardness of the rack after heat treatment is HRC45-55; the structure of the whole machine head is very compact. Small size, high strength, wear resistance, low noise, high precision, long service life, etc.; (3) Only one set of transmission mechanism is needed, so the structure is simple, and the chance of failure is significantly reduced.

Description of drawings

Figures 1-3 are schematic structural views of the present invention: Figure 1 is a front view; Figure 2 is a top view; Figure 3 is a left view.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. Referring to Fig. 1-Fig. 3, the structural design of the head of the flat-bed CNC cutting and plotting machine is to use a stepper motor 1 to drive the knife and pen installed on the rack linkage 14 to move up and down to work. Its operating principle and The working process is as follows: After the stepping motor 1 receives the pulse signal, it makes a circular motion with the pulse signal, and drives the connecting rod 4 and the tool holder rack 9 to make a linear motion through the eccentric wheel 3 on the shaft of the stepping motor 1. The knife holder 6 installed on the knife holder tooth bar 9 and the knife bar 5, the pen holder 7 and the pen holder 8 installed on the pen holder tooth bar 12 cut along with the movement of the rack, withdraw the knife or lift the pen, and write down; 6 and knife bar 5 were cut, when moving back the knife, penholder 8 was done opposite movement by the reversing gear 11 in the middle of pen holder rack 12 and knife holder rack 9, promptly picks up the pen and puts down the pen. When the pen clip 7 and the pen holder 8 were doing the pen-lifting and pen-down motion, the knife bar 5 then moved in the opposite direction through the reversing gear 11 in the middle of the tool holder rack 9 and the pen holder rack 12, that is, falling and lifting the knife. When starting, the eccentric wheel 3 rotates counterclockwise, the tool holder 5 and the pen holder 8 return to the equilibrium position, that is, the tool holder 6 and the pen holder 7 are on the same plane, and the notch on the eccentric wheel 3 is aligned with the center of the photoelectric cell 2; normal operation , the eccentric wheel 3 rotates clockwise, driving the cutter bar 5 and the pen holder 8 to move up and down. After finishing a procedure every time, cutter bar 5 and penholder 8 all return to the equilibrium position. Two small adjusting screws 10 are respectively arranged in the waist-shaped grooves on both sides of the rack linkage 14, which are used to adjust the height of the cutter bar 5, the pen holder 8 and the workpiece on the table. The depth of the feed is realized by adjusting the size of the gear through the keyboard, which can cut or draw materials of different thicknesses.

Claims (1)

1. A flat type CNC cutting and drawing machine linkage head, characterized in that it is connected by a stepper motor [1] to a rack linkage [14], and the rack linkage [14] passes through the tool holder Rack [9] is equipped with knife clip [6], cutter bar [5] and is equipped with pen clip [7], pen holder [8] by pen clip tooth bar [12]; The eccentric wheel [3], the eccentric wheel [3] is connected to one end of the connecting rod [4], and the other end of the connecting rod [4] is connected to the tool holder rack [9]; the tool holder rack [9] is connected to the pen holder tooth There is a reversing gear [11] in the middle of the bar [12]; the reversing gear [11] is positioned on the rack linkage [14]; the above-mentioned eccentric wheel [3] has a gap and the photocell [2] on the same center line; Two adjustment screws [10] are respectively arranged in the waist-shaped grooves on both sides of the rack linkage [14]; locking screw rods [13] are respectively housed on the tool holder [6] and the pen holder [7].

Images