CN210257785U

CN210257785U - Workpiece clamping device of engraving machine

Info

Publication number: CN210257785U
Application number: CN201920556298.2U
Authority: CN
Inventors: 洪育桂; 段伍华
Original assignee: Fujian Quanzhou Super Sheng Cnc Machinery Co ltd
Current assignee: Fujian Quanzhou Super Sheng Cnc Machinery Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-04-07
Anticipated expiration: 2029-04-23

Abstract

The utility model relates to an engraver technical field, in particular to engraver work piece clamping device. The workpiece clamping device of the engraving machine comprises a rotary machine base, a top, two slide rails, a movable platform and an inclined ejection mechanism, wherein the top is arranged on the movable platform, the movable platform is arranged on the slide rails and can move along the direction of the slide rails, the inclined ejection mechanism is arranged on the movable platform and is positioned between the two slide rails, the inclined ejection mechanism comprises an inclined ejection block and two locking blocks, an insertion space for accommodating the inclined ejection block is formed between the two locking blocks, the inclined ejection block can move towards the insertion space and can extrude the locking blocks on two sides to respectively move towards two outer sides, and the locking blocks are enabled to abut against the slide rails to fix the relative positions of the movable platform and the slide rails. The sliding rail is laterally extruded through the pitched roof mechanism, the fixed rail is locked and fixed through static friction, the pitched roof pressure is high, the mobile platform is stably positioned, and the bearing load and the working condition are high and stable.

Description

Workpiece clamping device of engraving machine

Technical Field

The utility model relates to an engraver technical field, in particular to engraver work piece clamping device.

Background

With the development of computer technology, the development of numerical control processing is driven, and the numerical control engraving machine is widely applied to the processing industries of wooden products, stone products and the like due to the advantages of high processing precision and high speed. In order to improve the adaptability of the numerical control engraving machine to workpieces with different sizes, the Chinese patent with the publication number of CN 101134323B discloses a workpiece clamping device of the numerical control three-dimensional engraving machine, which comprises a frame and a motor, and is characterized in that the frame is provided with a turntable and a tip which can form a clamping workpiece with the turntable and can extend and retract in the axial direction (32) of the turntable, the tip is over against the center of the turntable and is arranged on a sliding mechanism which can move back and forth in the axial direction of the turntable, a rotating mechanism which can rotate the turntable is arranged between the turntable and the motor, the sliding mechanism comprises a beam which is arranged at the bottom of the frame and can move back and forth in the axial direction of the turntable, two ends of the beam are connected with the frame where the beam is arranged by a slide rail, the slide rail is arranged in the axial direction of the turntable, the tip is connected on the beam, two sides of the end surface of the beam are, the bolt penetrates through the end face of the cross beam and abuts against the sliding rail, positioning holes are formed in the positions, located at the two ends of the cross beam, of the rack, and the two ends of the cross beam are fixed to the rack through pin shafts. In the existing workpiece clamping device, a centre is suitable for clamping workpieces with different sizes through the slidable and positioning of a slide rail, the positioning mode adopts the mode that a pin shaft is matched with a positioning hole for fixing, when the clamped workpiece has larger weight, the pin shaft can generate a certain deformation amount and is embedded in the positioning hole and difficult to take out, so that the use is inconvenient; simultaneously, the arrangement of more positioning holes can reduce the strength of the equipment, and the working load capacity of the equipment is reduced.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough among the prior art, the utility model provides a can bear that the load is big, locking and convenient engraver work piece clamping device of unblock.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides an engraver work piece clamping device, includes rotating base, top, and the work piece centre gripping is between rotating base and top, its characterized in that: the ejection mechanism comprises an oblique ejection block and two locking blocks, an insertion space for accommodating the oblique ejection block is formed between the two locking blocks, the oblique ejection block moves towards the insertion space and can extrude the locking blocks on two sides to move towards two outer sides respectively, and the locking blocks abut against the slide rails to fix the relative positions of the moving platform and the slide rails.

Furthermore, two first inclined planes are arranged on two sides of the inclined ejecting block, a tip is formed at the front end of the inclined ejecting block by the two first inclined planes, the locking block is provided with a second inclined plane towards one side of the inclined ejecting block, the two second inclined planes of the two locking blocks form a horn-shaped insertion space with an outward opening, and the first inclined planes and the second inclined planes are in gradient consistency to form matching surface contact.

Furthermore, the pitched roof mechanism further comprises an operation screw rod, the operation screw rod is in threaded connection with the moving platform, one end of the operation screw rod is in rotation limit connection with the pitched roof block, and the operation screw rod is rotated to drive the pitched roof block to move inwards or outwards.

Furthermore, the inclined ejection mechanism further comprises a return spring, and the return spring acts between the moving platform and the locking block to enable the locking block to have elastic force separated from the sliding rail.

Furthermore, push up mechanism still includes two sets of horizontal limiters to one side, and two sets of horizontal limiters correspond two latch segments respectively, and on horizontal limiter was fixed in the mobile platform, horizontal limiter was including locating the latch segment around both sides and two elongated spacing strips of parallel arrangement, the latch segment restricted to only can follow the lateral direction and remove between the two elongated spacing strips.

Furthermore, the inclined ejecting mechanism further comprises a longitudinal limiter, the longitudinal limiter comprises a long groove arranged on the central axis of the inclined ejecting block, and a limiting convex block which protrudes out of the movable platform and is located at the central axis, and the limiting convex block is located in the long groove to enable the inclined ejecting block to only move longitudinally along the central axis.

Furthermore, the slide rail is circular slide rail, and the latch segment has the convex recess of cooperating with circular slide rail towards circular slide rail one side.

Furthermore, a vertical pulley and a horizontal pulley are arranged on the moving platform, the vertical pulley and the horizontal pulley are groove pulleys matched with the circular slide rail, the vertical pulley is erected on the circular slide rail and is matched with the upper side of the circular slide rail, and the horizontal pulley is arranged on the inner side of the circular slide rail and is matched with the inner side of the circular slide rail.

Furthermore, the axis of the circular slide rail and the axis of the groove of the vertical pulley matched with the circular slide rail on the side are positioned on the same vertical plane, and the axis of the circular slide rail, the axis of the groove of the transverse pulley and the axis of the circular arc-shaped groove of the locking block are positioned on the same transverse plane.

From the above description of the present invention, compared with the prior art, the workpiece clamping device of the engraving machine provided by the present invention laterally extrudes the slide rail through the pitched roof mechanism, so as to realize fixation by static friction force, the pitched roof pressure is large, the mobile platform is stably positioned, and the bearable load is large; the inclined ejector block is withdrawn, namely pressure is released to enable the locking block to loosen the slide rail, so that the situation that unlocking cannot be realized due to deformation is avoided; the arrangement of the circular slide rail and the groove pulley limits the horizontal and vertical relative positions of the moving platform and the slide rail, the operation is more stable, and the locking position of the locking block is more accurate.

Drawings

Fig. 1 is the schematic view of the local structure of the workpiece clamping device of the engraving machine of the present invention.

Fig. 2 is the utility model relates to an engraver work piece clamping device overall structure sketch map.

Fig. 3 is the schematic view of the connection relationship between the slide rail and the horizontal and vertical pulleys.

Fig. 4 is the structural schematic diagram of the mobile platform and the lifter mechanism of the present invention.

Fig. 5 is the structure diagram of the unlocking state of the lifter mechanism of the present invention.

Fig. 6 is a structural schematic diagram of the locking state of the lifter mechanism of the present invention.

The labels in the figure correspond to the following: the device comprises a rotary machine base 1, a top tip 2, a sliding rail 3, a moving platform 4, a vertical pulley 41, a horizontal pulley 42, an inclined ejection mechanism 5, an inclined ejection block 51, a first inclined surface 511, a locking block 52, a second inclined surface 521, an arc-shaped groove 522, a horizontal limiter 53, a long limiting strip 531, a longitudinal limiter 54, a long groove 541, a limiting lug 542, an operating screw 55 and a return spring 56.

Detailed Description

The present invention will be further described with reference to the following detailed description.

Referring to fig. 1 to 6, the workpiece clamping device for the engraving machine comprises a rotary machine base 1, a top 2, a slide rail 3, a movable platform 4 and an inclined top mechanism 5.

The centre 2 is arranged on the movable platform 4, the movable platform 4 is arranged on the slide rail 3 and can move back and forth along the direction of the slide rail 3, and the distance between the centre 2 and the rotary machine base 1 is changed so as to be suitable for clamping workpieces with different sizes;

the pitched roof mechanism 5 is arranged on the moving platform 4 and located between the two slide rails 3, and the pitched roof mechanism 5 comprises a pitched roof block 51, two locking blocks 52, a transverse limiter 53, a longitudinal limiter 54, an operation screw 55 and a return spring 56.

The inclined top block 51 is positioned between the two locking blocks 52, two sides of the inclined top block 51 are provided with two first inclined surfaces 511, the two first inclined surfaces 511 form a tip at the front end of the inclined top block 51, the locking block 52 is provided with a second inclined surface 521 towards one side of the inclined top block 51, the two second inclined surfaces 521 of the two locking blocks 52 form a horn-shaped insertion space with an outward opening, and the first inclined surfaces 511 and the second inclined surfaces 521 have the same gradient to form matching surface contact; the transverse limiting device 53 is provided with two groups of locking blocks 52 which respectively correspond to the two groups of locking blocks 53, the transverse limiting device 53 is fixed on the movable platform 4, the transverse limiting device 53 comprises two long limiting strips 531 which are arranged on the front side and the rear side of the locking blocks 52 and are arranged in parallel, and the locking blocks 52 are limited between the two long limiting strips 531 and can only move along the transverse direction; the longitudinal limiter 54 comprises a long groove 541 formed in the central axis of the inclined ejecting block 51 and a limiting bump 542 protruding from the movable platform 4 and located at the central axis, and the limiting bump 542 is located in the long groove 541, so that the inclined ejecting block 51 can only longitudinally move along the central axis; the operation screw 55 is in threaded connection with the mobile platform 4, one end of the operation screw 55 is in rotation limit connection with the inclined ejecting block 51, and the inclined ejecting block 51 can be driven to move inwards or outwards by rotating the operation screw 55; the inclined ejector block 51 moves towards the insertion space and can extrude the locking blocks 52 at two sides to move towards two outer sides respectively, so that the locking blocks 52 abut against the slide rail 3 to fix the relative position of the movable platform 4 and the slide rail 3; the return spring 56 acts between the movable platform 4 and the locking blocks 52, so that the locking blocks 52 have an elastic force separated from the slide rail 3, and after the inclined top block 51 exits from the insertion space, the two locking blocks 52 are separated from the slide rail 3 under the elastic force, thereby unlocking the movable platform 4 and the slide rail 3.

The slide rail 3 is a circular slide rail, and one side of the locking block 52 facing the circular slide rail is provided with a circular arc groove 522 matched with the circular slide rail; the moving platform 4 is provided with vertical pulleys 41 arranged in pairs and transverse pulleys 42 arranged in pairs, the vertical pulleys 41 and the transverse pulleys 42 are groove pulleys matched with the circular slide rail, the vertical pulleys 41 are erected on the circular slide rail and matched with the upper side of the circular slide rail, and the transverse pulleys 42 are arranged on the inner side of the circular slide rail and matched with the inner side of the circular slide rail; the axis of the circular slide rail and the axis of the groove of the vertical pulley 41 matched with the circular slide rail on the side are positioned on the same vertical plane, and the axis of the circular slide rail, the axis of the groove of the transverse pulley 42 and the axis of the circular arc-shaped groove 522 of the locking block 52 are positioned on the same transverse plane; after the grooves of the vertical pulley 41 and the horizontal pulley 42 are matched with the circular slide rails, the horizontal position of the mobile platform 4 is limited, and the locking block 52 can be enabled to abut against the slide rails at the accurate position when being pushed out to two sides, so that the positioning is accurate.

The working principle of the carving machine workpiece clamping device comprises the following steps:

the method comprises the following steps that firstly, a tip is arranged on a movable platform 4 and is moved to a proper position on a slide rail 3 through the movable platform 4 so as to adapt to workpieces with different sizes;

step two, locking the mobile platform 4, after the mobile platform 4 moves to a proper position, rotating the operation screw 55 to drive the inclined top block 51 to move inwards, wherein due to the arrangement of the transverse limiter 53, the locking blocks 52 can only move between the two long limiting strips 531 along the transverse direction, when the inclined top block 51 moves towards the insertion space, the two first inclined surfaces 511 extrude the second inclined surfaces 521 of the locking blocks 52 at two sides and slide relative to each other, the two locking blocks 52 respectively move towards two outer sides to abut against the slide rail 3, and the locking blocks 52 and the slide rail 3 form static friction force to limit the mutual movement between the mobile platform and the slide rail 3; meanwhile, due to the arrangement of the longitudinal limiter 54, the inclined ejector block 51 can only longitudinally move along the central axis direction, so that the displacement amount of the two first inclined surfaces 511 of the inclined ejector block 51 pushing the locking blocks 52 on the two sides is consistent, namely, the locking force of the two locking blocks 52 on the two slide rails 3 is consistent, and the stress is uniform;

placing the workpiece between the rotary machine base 1 and the tip 2, changing the extension length of the tip 2, clamping the workpiece between the rotary machine base 1 and the tip 2, and then processing the workpiece; when the same type of workpieces are replaced, the workpieces can be mounted and dismounted again by changing the extension length of the center 2;

step four, when a workpiece with a large size difference needs to be replaced, the moving platform needs to be unlocked, the operating rod 55 is rotated to drive the inclined ejecting block 51 to move outwards, due to the arrangement of the return spring 56, after the extrusion force of the inclined ejecting block 51 is lost, the locking block 52 moves inwards under the action of the elastic force of the return spring 56, the locking block 52 is separated from the sliding rail 3, the moving platform 4 is unlocked and can move along the direction of the sliding rail 3, and after the moving platform 4 moves to a proper position, the moving platform returns to the step two to be locked again.

The above-mentioned only be the utility model discloses a concrete implementation way, nevertheless the utility model discloses a design concept is not limited to this, and all utilize this design right the utility model discloses carry out immaterial change, all should belong to the act of infringement the protection scope of the utility model.

Claims

1. The utility model provides an engraver work piece clamping device, includes rotating base, top, and the work piece centre gripping is between rotating base and top, its characterized in that: the ejection mechanism comprises an oblique ejection block and two locking blocks, an insertion space for accommodating the oblique ejection block is formed between the two locking blocks, the oblique ejection block moves towards the insertion space and can extrude the locking blocks on two sides to move towards two outer sides respectively, and the locking blocks abut against the slide rails to fix the relative positions of the moving platform and the slide rails.

2. The engraver workpiece holding device of claim 1 wherein: two first inclined planes have to one side of sloping kicking block, and two first inclined planes form most advanced at the sloping kicking block front end, and the latch segment has the second inclined plane towards sloping kicking block one side, and two second inclined planes of two latch segments form the loudspeaker form insertion space of opening outwards, and first inclined plane forms the fitting surface contact with the unanimous formation of second inclined plane gradient.

3. The engraver workpiece holding device of claim 1 wherein: the pitched roof mechanism further comprises an operation screw, the operation screw is in threaded connection with the moving platform, one end of the operation screw is in rotation limit connection with the pitched roof block, and the operation screw is rotated to drive the pitched roof block to move inwards or outwards.

4. The engraver workpiece holding device of claim 1 wherein: the inclined ejection mechanism further comprises a return spring, and the return spring acts between the moving platform and the locking block to enable the locking block to have elastic force separated from the sliding rail.

5. The engraver workpiece holding device of claim 1 wherein: the inclined ejection mechanism further comprises two groups of transverse limiting devices, the two groups of transverse limiting devices correspond to the two locking blocks respectively, the transverse limiting devices are fixed on the movable platform, the transverse limiting devices comprise two elongated limiting strips which are arranged on the front side and the rear side of the locking blocks in parallel, and the locking blocks are limited between the two elongated limiting strips and can only move in the transverse direction.

6. The engraver workpiece holding device of claim 1 wherein: the inclined ejecting mechanism further comprises a longitudinal stopper, the longitudinal stopper comprises a long groove arranged on the central axis of the inclined ejecting block, and a limiting convex block protruding out of the movable platform and located at the central axis, and the limiting convex block is located in the long groove to enable the inclined ejecting block to only move longitudinally along the central axis.

7. The engraver workpiece holding device of claim 1 wherein: the slide rail is circular slide rail, and the latch segment has the convex recess with circular slide rail complex towards circular slide rail one side.

8. The engraver workpiece holding device of claim 7, wherein: the movable platform is provided with vertical pulleys and transverse pulleys, the vertical pulleys and the transverse pulleys are groove pulleys matched with the circular slide rails, the vertical pulleys are erected on the circular slide rails and matched with the upper sides of the circular slide rails, and the transverse pulleys are arranged on the inner sides of the circular slide rails and matched with the inner sides of the circular slide rails.

9. The engraver workpiece holding device of claim 8, wherein: the axis of the circular slide rail and the axis of the groove of the vertical pulley matched with the circular slide rail on the side are located on the same vertical plane, and the axis of the circular slide rail, the axis of the groove of the transverse pulley and the axis of the arc-shaped groove of the locking block are located on the same transverse plane.