CN219485006U - Composite machine tool with tool bit quick-change equipment for increasing and decreasing materials - Google Patents

Abstract

The utility model discloses a composite machine tool with a tool bit quick-change device for increasing and decreasing materials, which relates to the technical field of composite machining machinery and comprises a Y-axis device horizontally arranged on a base; a C-axis rotary workbench is rotatably arranged on the Y-axis device; one end of the base is vertically provided with a portal frame; z-axis devices are respectively arranged on two sides of the portal frame; the two Z-axis devices are movably provided with an X-axis device; the X-axis device is rotatably provided with a B-axis device; the lower end of the B shaft device is provided with a cutter; the front end of the B-axis device is detachably connected with a printing spray head through a lifting mechanism. The utility model realizes the integration and quick switching of two processing modules for increasing and decreasing materials through the quick-changing device of the cutter head, realizes the composite function of material adding and material reducing processing on the same equipment, and the machine tool has the comprehensive characteristics of material adding/reducing processing, and has the advantages of simple structure, small occupied area, high processing efficiency and powerful functions.

Description

Composite machine tool with tool bit quick-change equipment for increasing and decreasing materials

Technical Field

The utility model relates to the technical field of composite machining machinery, in particular to a composite machine tool with a tool bit quick-change device for increasing and decreasing materials.

Background

The composite processing machine tool for increasing and reducing materials has the advantages of high surface quality and high efficiency of the processed parts by reducing materials, has the advantages of easy forming of a complex structure for additive processing, high utilization rate of raw materials and the like, can overcome the defects of low forming precision, gaps in the prior additive processing parts, and the like, realizes the processing of complex parts such as impellers, deep holes, special inner cavities and the like, can repair expensive parts, and is one of the important means for integrally forming and repairing the complex parts, but the prior composite processing machine tool for increasing and reducing materials mostly adopts a structure with separated additive parts and material reducing parts, and has low composite degree of increasing and reducing materials and large occupied area.

For example, chinese patent application document CN112936857a discloses a numerical control machine tool for increasing or decreasing material, which combines traditional additive manufacturing and subtractive material manufacturing, can realize additive and subtractive material processing on a piece of processing equipment simultaneously, and has the advantages of both, and can be used in combination, or can be used as a five-axis machine tool or a 3D printer alone, but the print head of the machine tool additive part and the cutting tool of the subtractive material part are separately arranged, and when different material increasing or decreasing operations are performed, all the C-axis devices need to be moved, so that the defects of complex structure, lower switching efficiency and the like exist.

In view of this, the present utility model has been made.

Disclosure of Invention

The utility model aims at the problems, and provides the composite processing device for increasing and decreasing materials, which has a compact structure and is convenient to switch, and solves the problems that the existing integrated composite processing device for increasing and decreasing materials needs to be manually switched, has a complex structure and is low in switching efficiency.

The utility model adopts the technical scheme that: a composite machine tool with a tool bit quick-change device for increasing and decreasing materials comprises a lifting mechanism, a Z-axis device, an X-axis device, a Y-axis device, a C-axis rotary workbench, a B-axis device, a base and a portal frame;

a Y-axis device is horizontally arranged on the base, and a C-axis rotary workbench for installing a workpiece is rotatably sleeved on the Y-axis device;

a portal frame is vertically arranged at one end of the base, Z-axis devices are respectively arranged at two sides of the portal frame, X-axis devices are jointly and movably arranged on the two Z-axis devices, and B-axis devices are rotatably arranged on the X-axis devices;

the lower end of the B shaft device is detachably provided with a cutter;

the printing device also comprises a printing nozzle;

the front end of the B-axis device is detachably connected with a printing nozzle for feeding through a lifting mechanism.

Further, the Z-axis device, the X-axis device and the Y-axis device are respectively and vertically arranged in pairs.

Further, the lifting mechanism comprises a guide rail, a sliding block, a screw rod, a bearing, a coupler, a connecting bracket and a first servo motor;

the outer side of the B-axis device is detachably connected with a U-shaped frame through a first bolt, a screw rod is rotatably arranged on the U-shaped frame, bearings are respectively arranged at the joints of the screw rod and two free ends of the U-shaped frame, a sliding block is sleeved on the screw rod in a threaded manner, a guide rail is vertically arranged on the U-shaped frame, a sliding rod matched with the guide rail is arranged on the sliding block, and the sliding rod is arranged in the guide rail in a sliding manner;

the U-shaped frame upper end is equipped with the linking bridge, install a servo motor on the linking bridge, a servo motor's output shaft passes through the shaft coupling and is connected with the lead screw, print shower nozzle demountable installation on the slider.

Further, the printing spray head comprises a fixed seat, a feeding wheel, an adjusting wheel, a throat pipe, a radiating fin, a heating block and a nozzle;

the outer side of the sliding block is detachably connected with a fixing seat through a second bolt, the upper end of the fixing seat is provided with a first through hole for placing printing materials, the fixing seat is provided with a first groove, the inner side of the first groove is rotationally provided with a feeding wheel, the feeding wheel is driven by a second servo motor, the outer side of the first groove is movably provided with an adjusting wheel, the position of the adjusting wheel is adjusted by a moving assembly, the adjusting wheel is detachably connected with the feeding wheel, and the connecting part of the fixing seat, which is positioned between the adjusting wheel and the feeding wheel, is provided with a second through hole for passing extruded materials;

the fixed seat lower extreme through connection has the choke, the choke outside cover has the heating block, be equipped with a plurality of fin on the heating block, heating block lower extreme side is equipped with thermistor, the choke runs through the heating block through connection has the nozzle.

Further, the moving assembly comprises an adjusting wheel connecting rod, a fastening screw, an adjusting bracket, a spring, a cover plate and an adjusting screw;

the side wall of the fixed seat is provided with a second groove, an adjusting bracket is movably arranged in the second groove, an adjusting screw rod penetrates through the adjusting bracket in a rotating mode, the free end of the adjusting screw rod is in threaded connection with the fixed seat, a spring and a cover plate are respectively and movably sleeved outside the adjusting screw rod, and the spring is positioned between the cover plate and the adjusting bracket;

the lower end of the adjusting bracket is connected with an adjusting wheel connecting rod through a fastening screw, and the free end of the adjusting wheel connecting rod is rotationally connected with an adjusting wheel;

furthermore, the fixed seat is rotatably provided with a pin shaft, the adjusting bracket is provided with a sliding hole matched with the pin shaft, and the pin shaft is arranged in the sliding hole in a sliding way.

The utility model has the advantages that:

(1) According to the utility model, the cutter and the movable printing nozzle are respectively arranged on the B-axis device, and when the material reduction processing is carried out, the printing nozzle is driven to move upwards by the lifting mechanism, so that the cutter is leaked out to carry out the corresponding material reduction processing such as milling and the like; when the material is added, the lifting mechanism drives the printing spray head to move downwards, so that the position of the printing spray head is lower than the position of the cutter, and the material is added and printed, and the structure ensures that printing and cutting are in the same working space, when the material adding and removing processing modes are mutually switched, the cutter and the nozzle are not required to be replaced, the slide block of the nozzle is positioned so that alignment is only required once before processing, the interference between the cutter and the nozzle is avoided by the up-down movable mode, the mechanism is used for alternately processing the added and removed materials, loading and unloading are not required, the structure is simple, the occupied area is small, the processing efficiency is high, and the function is strong;

(2) Through setting up mobilizable regulating wheel on the printing nozzle, can be according to waiting to print the material size during the use, adjust the distance between feed wheel and the regulating wheel to satisfy different material size needs, have stronger practicality.

In addition to the objects, features and advantages described above, the present utility model has other objects, features and advantages. The present utility model will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a three-dimensional schematic of the overall structure of the present utility model;

FIG. 2 is an enlarged schematic view of the lifting mechanism and the printing head according to the present utility model;

FIG. 3 is a schematic diagram of the overall connection structure of the lifting mechanism and the printing nozzle;

FIG. 4 is a schematic view of the structure of the lifting mechanism of the present utility model;

FIG. 5 is a schematic diagram showing a front view of a print head according to the present utility model;

FIG. 6 is a schematic diagram of a print head test configuration of the present utility model;

FIG. 7 is a schematic view of a fixing base of the present utility model;

FIG. 8 is a schematic view of the structure of the B-axis device of the present utility model.

Reference numerals:

1 is a lifting mechanism; 2 is a printing nozzle; 3 is a Z-axis device; 4 is an X-axis device; 5 is a Y-axis device; 6 is a C-axis rotary workbench; 7 is a B-axis device; 71 is a swing motor; 72 is a swing decelerator, 7211 is a first bevel gear; 7212 is a second bevel gear; 722 is a synchronous conveyor belt; 73 is an electric spindle; 74 is an electric spindle support; 8 is a base; 9 is a portal frame; 10 is a cutter; 11 is a base; 12 is a guide rail; 13 is a slide block; 14 is a screw rod; 15 is a bearing; 16 is a coupling; 17 is a first servo motor; 18 is a connecting bracket; 19 is a first groove; 20 is a second groove; 21 is a fixed seat; 22 is a feed wheel; 23 is an adjusting wheel; 24 is an adjusting wheel connecting rod; 25 is a fastening screw; 26 is an adjusting bracket; 27 is a spring; 28 is a cover plate; 29 is an adjusting screw; 30 is a pin shaft; 31 is a throat; 32 is a heat sink; 33 is a heating block; 34 is a nozzle; 35 is a second servomotor; 36 is a thermistor.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1 to 8, a composite machine tool with a tool bit quick-change device for increasing and decreasing materials comprises a lifting mechanism 1, a printing nozzle 2, a Z-axis device 3, an X-axis device 4, a Y-axis device 5, a C-axis rotary workbench 6, a B-axis device 7, a base 8 and a portal frame 9;

the overall structure of the machine tool adopts a gantry structure, and the specific structure is as follows: the base 8 is horizontally provided with a Y-axis device 5, the Y-axis device 5 is rotatably provided with a C-axis rotary workbench 6 for installing a workpiece, the C-axis rotary workbench 6 comprises a driving motor, a speed reducer, a support and a rotary workbench, the motor is provided with a high-resolution rotary photoelectric encoder, the support is movably sleeved on the Y-axis device 5, the driving motor is arranged on the support, the rotary workbench is connected to the speed reducer through a second coupler, and the driving motor drives the rotary workbench to rotate, so that the C-axis rotary workbench 6 rotates in the embodiment.

The portal frame 9 is vertically installed to 8 one ends of base, and base 8 and portal frame 9 are mainly used to support whole increase and decrease material lathe, and Z axle device 3 is installed respectively to the portal frame 9 both sides, and joint movement installs X axle device 4 on two Z axle devices 3, sets up B axle device 7 through rotary mechanism on the X axle device 4, and B axle device 7 can realize rotary motion, along with the rotary motion of B axle device 7, and the lathe main shaft realizes from perpendicular to the change of horizontal direction, and then accomplishes the lathe main shaft and swings between level and vertical direction.

A specific rotating mechanism is shown in fig. 8 in the prior art;

the rotating mechanism comprises a swing motor 71, a swing speed reducer 72, a bevel gear 721, a first bevel gear 7211, a second bevel gear 7212, a synchronous conveyor belt 722, an electric spindle 73 and an electric spindle support 74;

the Z-axis device 3 is provided with a swing speed reducer 72, the swing speed reducer 72 is connected with the output end of a swing motor 71 through a synchronous conveyor belt 722, the free end of the speed reducer 72 is connected with a first bevel gear 7211, the B-axis device 7 is provided with an electric spindle support 74, the electric spindle support 74 is provided with an electric spindle 73, wherein the electric spindle is a main structure of a machine tool and swings along with the swing of the B-axis device 7, the electric spindle support 74 is provided with a second bevel gear 7212 in the prior art, and the first bevel gear 7211 is meshed with the second bevel gear 7212; the B-axis device 7 forms an included angle of 45 degrees with the Z-axis device 3 of the machine tool.

Upon receiving the driving signal, the swing motor 71 performs a rotation motion of a rotation shaft, which forms an angle of 45 ° with the Z axis of the machine tool, through a motion of the synchronous belt 722, the swing reducer 72, and the bevel gear 721, and performs a change from vertical to horizontal along with the rotation motion of the rotation shaft, thereby completing a swing of the electric spindle of the machine tool between horizontal and vertical directions.

The Z-axis device 3, the X-axis device 4 and the Y-axis device 5 are respectively and vertically arranged in pairs, the motion of three axes is mainly driven by a driving device to move by a high-precision ball screw, and the ball screw is matched with a sliding rail so as to drive the three devices to do linear motion along the direction X, Y, Z; when the height of the B-axis device 7 needs to be adjusted, a corresponding driving motor on the Z-axis device 3 can be adjusted to drive a corresponding high-precision ball screw to rotate, the X-axis device 4 is adjusted to move up and down, and the B-axis device 7 moves up and down along with the X-axis device, so that the height adjustment is completed; when the horizontal position of the B-axis device 7 needs to be adjusted, the corresponding high-precision ball screw can be driven to move by adjusting the corresponding driving motor on the X-axis device 4, and the position of the B-axis device 7 is adjusted to correspond to the position of the lower C-axis rotary workbench 6, so that the movements of the Z-axis device 3, the X-axis device 4 and the Y-axis device 5 are all in the prior art, and are not described herein.

The lower end of the B-axis device 7 is detachably provided with a cutter 10 through a cutter handle clamping mechanism, the cutter 10 is mainly used for carrying out corresponding material reduction processing such as milling, when the height position of the cutter 10 needs to be adjusted, the height of the B-axis device 7 is adjusted according to the operation, the cutter 10 can move up and down along with the adjustment, and the cutter 10 is adjusted to a proper height.

The front end of the B-axis device 7 is detachably connected with a printing nozzle 2 for feeding through a lifting mechanism 1, and when the material reduction processing is carried out, the printing nozzle 2 is driven to move upwards through the lifting mechanism 1, and a cutter 10 is leaked so as to carry out the corresponding material reduction processing such as milling and the like; when the additive is processed, the lifting mechanism 1 drives the printing spray head 2 to move downwards, so that the position of the printing spray head 2 is lower than the position of the cutter 10, and the additive printing processing is realized. The structure ensures that printing and cutting are in the same working space, when the machining modes of the materials are switched mutually, the cutter and the nozzle are not required to be replaced, the slide block of the nozzle is positioned so that the alignment is only required once before machining, the interference between the cutter and the nozzle is avoided by the up-and-down movable mode, the mechanism is used for alternately machining the materials, and the mixed machining can be completed without loading and unloading.

In the embodiment, the lifting mechanism 1 comprises a guide rail 12, a sliding block 13, a screw rod 14, a bearing 15, a coupler 16, a connecting bracket 17, a first positive and negative motor 18, wherein the outer side of the B-axis device 7 is detachably connected with a U-shaped frame 11 through a first bolt, the screw rod 14 is rotatably arranged on the U-shaped frame 11, the bearing 15 is respectively arranged at the joint of the screw rod 14 and two free ends of the U-shaped frame 11, the sliding block 13 is sleeved on the screw rod 14 in a threaded manner, the guide rail 12 is vertically arranged on the U-shaped frame 11, a sliding rod matched with the guide rail 12 is arranged on the sliding block 13, the sliding rod is arranged in the guide rail 12 in a sliding manner,

the upper end of the U-shaped frame 11 is provided with a connecting bracket 17, a first servo motor 18 is arranged on the connecting bracket 17, an output shaft of the first servo motor 18 is connected with a screw rod 14 through a coupler 16, the printing nozzle 2 is detachably arranged on a sliding block 13, when the printing nozzle is used, the first servo motor 18 drives the screw rod 14 to rotate through the coupler 16, the sliding block 13 can be driven to move up and down on the screw rod 14 by the rotation of the screw rod 14, and the up-and-down position of the printing nozzle 2 can be adjusted according to the actual use condition;

in this embodiment, the printing nozzle 2 includes a fixing seat 21, a feeding wheel 22, an adjusting wheel 23, a throat 31, a heat sink 32, a heating block 33, and a nozzle 34, the outer side of the sliding block 13 is detachably connected with the fixing seat 21 through a second bolt, a first through hole for placing a printing material is formed at the upper end of the fixing seat 21, a first groove 19 is formed in the fixing seat 21, the feeding wheel 22 is rotatably arranged at the inner side of the first groove 19, the feeding wheel 22 is driven by a second servo motor 35, the adjusting wheel 23 is movably arranged at the outer side of the first groove 19, the position of the adjusting wheel 23 is adjusted by a moving component, the adjusting wheel 23 is detachably connected with the feeding wheel 22, and a second through hole for passing the extruded material is formed at the joint of the adjusting wheel 23 and the feeding wheel 22 of the fixing seat 21; the lower end of the fixing seat 21 is connected with the throat 31 in a penetrating way, the heating block 33 is sleeved outside the throat 31, a plurality of radiating fins 32 are arranged on the heating block 33, a thermistor 36 is arranged on the side surface of the lower end of the heating block 33, the throat 31 penetrates through the heating block 33 and is connected with the nozzle 34 in a penetrating way, a second through hole for passing through extruded materials is formed in the joint of the adjusting wheel 23 and the feeding wheel 22 of the fixing seat 21, the fixing seat 21 is hollow, when the printing nozzle 2 works, according to the size of printing materials, the distance between the adjusting wheel 23 and the feeding wheel 22 is adjusted through the moving component, then the printing materials are put into the first through hole at the upper part of the fixing seat 21, the feeding wheel 22 is driven by the servo motor 35 to rotate clockwise, the printing wires are extruded downwards and pass through the second through hole and enter the lower throat 31, and the heating block 33 can heat the throat 31 and finally spray out of the nozzle 34 in order;

in this embodiment, the moving assembly includes an adjusting wheel 23, an adjusting wheel connecting rod 24, a fastening screw 25, an adjusting bracket 26, a spring 27, a cover plate 28 and an adjusting screw 29, a second groove 20 is formed on the side wall of the fixed seat 21, the adjusting bracket 26 is movably arranged in the second groove 20, a pin shaft 30 is rotatably arranged on the fixed seat 21, the adjusting bracket 26 is provided with a sliding hole matched with the pin shaft 30, the adjusting bracket 26 is slidably arranged in the sliding hole, the adjusting screw 29 is penetrated through in a rotating manner, the free end of the adjusting screw 29 is in threaded connection with the fixed seat 21, the spring 27 and the cover plate 28 are respectively sleeved outside the adjusting screw 29, the spring 27 is positioned between the cover plate 28 and the adjusting bracket 26, the lower end of the adjusting bracket 26 is connected with the adjusting wheel connecting rod 24 through the fastening screw 25, the free end of the adjusting wheel connecting rod 24 is rotatably connected with the adjusting wheel 23, and when in use, the adjusting bracket 26 can be pushed to move inwards by clockwise screwing the adjusting screw 29 through the spring 27 and the cover plate 28, and the adjusting bracket 26 is driven by the adjusting wheel connecting rod 24 to move inwards; by screwing the adjusting screw 29 anticlockwise, the adjusting bracket 26 can be driven to move outwards by the spring 27 and the cover plate 28, and the adjusting bracket 26 can drive the adjusting wheel 23 to move outwards by the adjusting wheel connecting rod 24, so that the distance between the adjusting wheel 23 and the feeding wheel 22 can be adjusted.

The working process of the utility model comprises the following steps:

before working, the components are adjusted to proper positions: driving a corresponding driving motor on the Y-axis device 5 to drive a corresponding high-precision ball screw to rotate, and adjusting the C-axis rotary workbench 6 to move in the direction of the Y-axis device 5 and to be adjusted to a proper position; driving a corresponding driving motor on the Z-axis device 3 to drive a corresponding high-precision ball screw to rotate, and adjusting the B-axis device 7 to a proper height; driving a corresponding driving motor on the X-axis device 4 to drive a corresponding high-precision ball screw to move, and adjusting the horizontal position of the B-axis device 7 to correspond to the position of the lower C-axis rotary workbench 6;

when the material reduction processing is performed, the first servo motor 18 is driven to rotate positively, the screw rod 14 is driven to rotate clockwise through the coupler 16, the sliding block 13 is driven to move upwards, and the cutter 10 is leaked so as to perform corresponding material reduction processing such as milling;

when the material adding processing is performed, the first servo motor 18 is driven to rotate reversely, the screw rod 14 is driven to rotate anticlockwise through the coupler 16, the sliding block 13 is driven to move downwards, the position of the printing nozzle 2 is lower than the position of the cutter 10, then the adjusting screw 29 is screwed according to printing materials, the adjusting bracket 26 can be driven to move through the spring 27 and the cover plate 28, the adjusting bracket 26 drives the adjusting wheel 23 to move through the adjusting wheel connecting rod 24, the distance between the adjusting wheel 23 and the feeding wheel 22 is adjusted, then the printing materials penetrate through a first through hole at the upper part of the fixed seat 21, the feeding wheel 22 is driven by the servo motor 35 to rotate clockwise, the printing wires are extruded downwards and pass through a second through hole under the cooperation of the adjusting wheel 23, enter the lower throat 31, and finally are sprayed out of the nozzle 34 in sequence.

According to the utility model, the cutter and the movable printing nozzle are respectively arranged on the B-axis device, and when the material reduction processing is carried out, the printing nozzle is driven to move upwards by the lifting mechanism, so that the cutter is leaked out to carry out the corresponding material reduction processing such as milling and the like; when the material is added, the lifting mechanism drives the printing spray head to move downwards, so that the position of the printing spray head is lower than the position of the cutter, and the material is added and printed, and the structure ensures that printing and cutting are in the same working space, when the material adding and removing processing modes are mutually switched, the cutter and the nozzle are not required to be replaced, the slide block of the nozzle is positioned so that alignment is only required once before processing, the interference between the cutter and the nozzle is avoided by the up-down movable mode, the mechanism is used for alternately processing the added and removed materials, loading and unloading are not required, the structure is simple, the occupied area is small, the processing efficiency is high, and the function is strong; through setting up mobilizable regulating wheel on the printing nozzle, can be according to waiting to print the material size during the use, adjust the distance between feed wheel and the regulating wheel to satisfy different material size needs, have stronger practicality.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims (6)

1. A composite machine tool with a tool bit quick-change device for increasing and decreasing materials comprises a lifting mechanism (1), a Z-axis device (3), an X-axis device (4), a Y-axis device (5), a C-axis rotary workbench (6), a B-axis device (7), a base (8) and a portal frame (9);

a Y-axis device (5) is horizontally arranged on the base (8), and a C-axis rotary workbench (6) for installing a workpiece is rotatably sleeved on the Y-axis device (5);

a portal frame (9) is vertically arranged at one end of the base (8), Z-axis devices (3) are respectively arranged at two sides of the portal frame (9), X-axis devices (4) are jointly movably arranged on the two Z-axis devices (3), and B-axis devices (7) are rotatably arranged on the X-axis devices (4) through a rotating mechanism;

the lower end of the B shaft device (7) is detachably provided with a cutter (10);

characterized by also comprising a printing nozzle (2);

the front end of the B-axis device (7) is detachably connected with a printing spray head (2) for feeding through a lifting mechanism (1).

2. The composite machine tool with the tool bit quick-change device for increasing and decreasing materials according to claim 1 is characterized in that the Z-axis device (3), the X-axis device (4) and the Y-axis device (5) are respectively arranged in a mode of being perpendicular to each other.

3. The composite machine tool with the tool bit quick change device for increasing and decreasing materials according to claim 2 is characterized in that the lifting mechanism (1) comprises a guide rail (12), a sliding block (13), a screw rod (14), a bearing (15), a coupler (16), a connecting bracket (17) and a first servo motor (18);

the U-shaped frame (11) is detachably connected to the outer side of the B-axis device (7) through a first bolt, a screw rod (14) is rotatably arranged on the U-shaped frame (11), bearings (15) are respectively arranged at the joints of the screw rod (14) and two free ends of the U-shaped frame (11), a sliding block (13) is sleeved on the screw rod (14) in a threaded mode, a guide rail (12) is vertically arranged on the U-shaped frame (11), a sliding rod matched with the guide rail (12) is arranged on the sliding block (13), and the sliding rod is arranged in the guide rail (12) in a sliding mode;

the U-shaped frame (11) upper end is equipped with linking bridge (17), install first servo motor (18) on linking bridge (17), the output shaft of first servo motor (18) is connected with lead screw (14) through shaft coupling (16), print shower nozzle (2) demountable installation on slider (13).

4. The composite machine tool with the cutter head quick-change equipment for increasing and decreasing materials according to claim 3, wherein the printing nozzle (2) comprises a fixed seat (21), a feeding wheel (22), an adjusting wheel (23), a throat pipe (31), cooling fins (32), a heating block (33) and a nozzle (34);

the automatic printing device is characterized in that a fixing seat (21) is detachably connected to the outer side of the sliding block (13) through a second bolt, a first through hole for placing printing materials is formed in the upper end of the fixing seat (21), a first groove (19) is formed in the fixing seat (21), a feeding wheel (22) is rotatably arranged on the inner side of the first groove (19), the feeding wheel (22) is driven by a second servo motor (35), an adjusting wheel (23) is movably arranged on the outer side of the first groove (19), the position of the adjusting wheel (23) is adjusted through a moving assembly, the adjusting wheel (23) is detachably connected with the feeding wheel (22), and a second through hole for passing extruded materials is formed in the joint of the adjusting wheel (23) and the feeding wheel (22) of the fixing seat (21).

The utility model discloses a heating device, including fixing base (21), heating block (33), choke (31) are connected with in a run-through way in fixing base (21) lower extreme, choke (31) outside cover has heating block (33), be equipped with a plurality of fin (32) on heating block (33), heating block (33) lower extreme side is equipped with thermistor (36), choke (31) run-through is connected with nozzle (34) in a run-through way in heating block (33).

5. The composite machine tool with the tool bit quick change device according to claim 4, wherein the moving assembly comprises an adjusting wheel connecting rod (24), a fastening screw (25), an adjusting bracket (26), a spring (27), a cover plate (28) and an adjusting screw (29);

a second groove (20) is formed in the side wall of the fixed seat (21), an adjusting bracket (26) is movably arranged in the second groove (20), an adjusting screw rod (29) is penetrated through the adjusting bracket (26) in a rotating mode, the free end of the adjusting screw rod (29) is in threaded connection with the fixed seat (21), a spring (27) and a cover plate (28) are respectively and movably sleeved outside the adjusting screw rod (29), and the spring (27) is positioned between the cover plate (28) and the adjusting bracket (26);

the lower end of the adjusting bracket (26) is connected with an adjusting wheel connecting rod (24) through a fastening screw (25), and the free end of the adjusting wheel connecting rod (24) is rotatably connected with an adjusting wheel (23).

6. The composite machine tool with the tool bit quick-change device for increasing and decreasing materials according to claim 5, wherein the fixed seat (21) is rotatably provided with a pin shaft (30), the adjusting bracket (26) is provided with a sliding hole matched with the pin shaft (30), and the pin shaft (30) is slidably arranged in the sliding hole.