CN103950331B - Drawing pencil automatic cutting device - Google Patents

Abstract

The invention discloses a kind of drawing pencil automatic cutting device.Existing pencil cutter, the coniform pencil cut does not meet the requirement of Graphing of Engineering to lead for retractable pencil shape.The present invention includes pencil fixture, horizontal delivery device, vertically delivery device, roughing mechanism, fine finishining mechanism, width adjustment mechanism and peripheral frame; Pencil fixture and cross sliding clock are fixed; Vertical propelling movement nut and horizontal delivery device mounting bracket are fixed; One end and the ring gear support of roughing hob arbor carriage are fixed, and the other end is connected with hob arbor carriage seat bearing; Roughing hobboing cutter engages with the internal tooth of ring gear support; Fine finishining hobboing cutter installation shaft is bearing on fine finishining hob arbor carriage, and fine finishining hobboing cutter and fine finishining hobboing cutter installation shaft are fixed; Two Bidirectional-screw adjusting nuts are arranged on the two ends of Bidirectional-screw, and fix respectively by the fine finishining hob arbor carriage of fine finishining mechanism installing rack and a fine finishining mechanism.Pencil cutting is become to meet the shape that Graphing of Engineering uses by the present invention.

Description

Drawing pencil automatic cutter

technical field

The invention belongs to the field of school supplies, and relates to a pencil cutter, in particular to an automatic drawing pencil cutter.

Background technique

Manual cutting of drawing pencils is time-consuming and difficult to cut into a more standardized shape, which is not conducive to drawing accurate lines and standard line widths, which in turn affects the quality of drawings. At present, there are many types of pencil cutters on the market, but the conical pencils they cut are used for writing, which do not meet the requirements of engineering drawing for lead shape.

Contents of the invention

The object of the present invention is to address the deficiencies of the prior art and provide an automatic drawing pencil cutter, which can cut the pencil into a shape suitable for engineering drawing.

The invention comprises a pencil clamp, a horizontal pushing mechanism, a vertical pushing mechanism, a roughing mechanism, a finishing mechanism, a width adjusting mechanism and a peripheral support.

Described horizontal push mechanism comprises horizontal slide rail support, horizontal slide block, horizontal slide rail, horizontal push screw mandrel, horizontal push nut, pencil fixture support and horizontal push motor; The base of described horizontal push motor is fixed with horizontal slide rail support The horizontal push screw rod is respectively supported on the horizontal slide rail bracket and the pencil fixture bracket by two bearings; the output shaft of the horizontal push motor is connected with the horizontal push screw rod through a belt drive; the side wall of the pencil clamp bracket is connected to the The horizontal push nut is fixed, and the horizontal push nut is threadedly connected with the horizontal push screw rod; the top of the pencil fixture is fixed with the pencil fixture bracket and the horizontal slide block; the horizontal slide block and the horizontal slide rail are connected through a sliding pair; the horizontal slide rail One end of the horizontal slide rail is fixed on the bracket; the sliding direction of the horizontal slide rail is parallel to the centerline direction of the horizontal push screw rod, and the pencil clamp is provided with a pencil jack along the sliding direction of the horizontal slide rail; the pencil jack The diameter of the aperture is equal to the diameter of the circumscribed circle of a hexagonal pencil or the diameter of the cylindrical surface of a cylindrical pencil.

Described vertical pushing mechanism comprises horizontal pushing mechanism mounting bracket, vertical pushing screw mandrel, vertical slide rail, vertical slide block, vertical pushing motor support, vertical pushing motor, vertical pushing screw mandrel support and vertical Push the nut; the base of the vertical push motor is fixed with the vertical push motor support, and the vertical push motor support is fixed with the peripheral support; the output shaft of the vertical push motor is connected with the vertical push screw rod through a belt transmission; the described The vertical pushing screw rod is respectively supported on the horizontal pushing mechanism mounting bracket and the vertical pushing screw rod bracket through two bearings; the vertical pushing screw rod bracket is fixed on the peripheral bracket; one end of the horizontal pushing mechanism mounting bracket It is fixed with the horizontal slide rail bracket, and the other end is fixed with the vertical slide block; the vertical slide block is connected with the vertical slide rail through a sliding pair; the vertical slide rail is fixed on the peripheral support along the vertical direction; The described vertical push nut is threadedly connected with the vertical push screw mandrel, and is fixed with the side wall of the horizontal push mechanism mounting bracket.

The rough machining mechanism comprises a rough machining hob, a hob tool rest seat, a rough machining hob knife rest, an inner ring gear support seat, an inner ring gear support, a hob rack synchronous pulley and a rough machining drive motor; The base of the rough machining driving motor is fixed on the peripheral bracket, and the output shaft of the rough machining driving motor is connected with the rough machining hob tool holder through a belt drive; one end of the rough machining hob tool holder is fixed to the ring gear bracket, and the other end It is connected with the hob tool rest seat through bearings; the inner ring gear bracket is connected with the inner ring gear bracket seat through bearings, and both the hob tool holder seat and the inner gear bracket seat are fixed on the peripheral bracket; the rough machining hob One end of the knife is connected to the tool holder of the roughing hob through a bearing, and the gear teeth at the other end mesh with the internal teeth of the ring gear bracket; the angle between the center line of the rough machining hob and the center line of the pencil socket It is 20-30°.

The finishing mechanism includes a finishing driving motor, a finishing hob, a finishing hob installation shaft and a finishing hob tool holder; the output shaft of the finishing driving motor and the finishing hob installation shaft are driven by a belt Connection; both ends of the finishing hob installation shaft are supported on the finishing hob tool holder through bearings, and the finishing hob is fixed on the finishing hob installation shaft.

The width adjustment mechanism includes a width adjustment stepper motor, a two-way screw rod, an optical shaft, a finishing frame, a bushing, a two-way screw nut and a two-way screw pulley; the two-way screw pulley is fixed on In the middle of the two-way screw, the width adjustment stepper motor is connected to the pulley of the two-way screw through a transmission belt; both ends of the two-way screw are supported on the peripheral bracket through bearings; end, and respectively fixed with a finishing mechanism mounting frame; a two-way screw nut is connected with the two-way screw through a left-handed thread, and the other two-way screw nut is connected with a two-way screw through a right-handed thread; two sleeves are sleeved on the The two ends of the shaft are respectively fixed with a mounting frame of a finishing mechanism; the two ends of the optical shaft are fixed on the peripheral support, and the optical shaft is arranged parallel to the two-way screw rod. Each finishing mechanism mounting bracket is fixed to the finishing hob tool holder of one finishing mechanism, the finishing hob installation axes of the two finishing mechanisms are all set horizontally, and the center line clamp of the two finishing hob installation axes The angle is 5-15°.

The beneficial effects of the present invention are:

1. The present invention can cut the pencil into a shape suitable for engineering drawing, which liberates the labor of pencil cutting in the drawing process, and is conducive to improving the quality of drawing;

2. The processing width of the pen core of the present invention can be set according to the user's needs, which can meet various line width requirements and has strong practicability;

3. The present invention adopts the hob type cutting mechanism, and the cutting is efficient.

Description of drawings

Fig. 1 is the assembled perspective view of the present invention;

Fig. 2 is the assembly schematic diagram of the present invention;

Fig. 3 is the perspective view of horizontal pushing mechanism among the present invention;

Fig. 4 is the perspective view of vertical pushing mechanism among the present invention;

Fig. 5 is an assembly perspective view of the horizontal pushing mechanism and the vertical pushing mechanism in the present invention;

Fig. 6 is a sectional view of the roughing mechanism in the present invention;

Fig. 7 is an assembly perspective view of the finishing mechanism and the width adjusting mechanism in the present invention;

Fig. 8 is a perspective view of the width adjustment mechanism in the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

As shown in Figures 1 and 2, the drawing pencil automatic cutter includes a pencil holder 1, a horizontal pushing mechanism 2, a vertical pushing mechanism 3, a roughing mechanism 4, a finishing mechanism 5, a width adjusting mechanism 6 and a peripheral support 7.

As shown in Figure 3, the horizontal push mechanism 2 includes a horizontal slide rail bracket 2-1, a horizontal slide block 2-2, a horizontal slide rail 2-3, a horizontal push screw rod 2-4, a horizontal push nut 2-5, and a pencil clamp Support 2-6 and horizontal push motor 2-7; The base of horizontal push motor 2-7 is fixed with horizontal slide rail support 2-1; Horizontal push screw rod 2-4 is supported on horizontal slide rail support 2-1 respectively by two bearings 1 and the pencil fixture support 2-6; the output shaft of the horizontal push motor 2-1 is connected with the horizontal push screw mandrel 2-4 through a belt transmission; the side wall of the pencil fixture support 2-6 is fixed with the horizontal push nut 2-5, The horizontal push nut 2-5 is threadedly connected with the horizontal push screw rod 2-4; the top of the pencil fixture 1 is fixed with the pencil fixture support 2-6 and the horizontal slider 2-2; the horizontal slider 2-2 is connected with the horizontal slide rail 2- 3 is connected by a sliding pair; one end of the horizontal slide rail 2-3 is fixed on the horizontal slide rail bracket 2-1; the sliding direction of the horizontal slide rail 2-3 is set parallel to the centerline direction of the horizontal push screw rod 2-4, and the pencil The fixture 1 is provided with a pencil jack 1-1 along the sliding direction of the horizontal slide rail 2-3; the diameter of the pencil jack 1-1 is equal to the diameter of the cylindrical surface of a cylindrical pencil.

As shown in Figures 4 and 5, the vertical push mechanism 3 includes a horizontal push mechanism mounting bracket 3-1, a vertical push screw rod 3-2, a vertical slide rail 3-3, a vertical slider 3-4, a vertical Push motor support 3-5, vertical push motor 3-6, vertical push screw support 3-7 and vertical push nut 3-8; the base of vertical push motor 3-6 and vertical push motor support 3- 5 is fixed, and the vertical push motor support 3-5 is fixed with the peripheral support 7; the output shaft of the vertical push motor 3-6 is connected with the vertical push screw mandrel 3-2 by a belt transmission; the vertical push screw mandrel 3-2 passes through Two bearings are respectively supported on the horizontal pushing mechanism mounting bracket 3-1 and the vertical pushing screw rod bracket 3-7; the vertical pushing screw rod bracket 3-7 is fixed on the peripheral bracket 7; the horizontal pushing mechanism mounting bracket 3-1 One end of the horizontal slide rail support 2-1 is fixed, and the other end is fixed with the vertical slide block 3-4; The vertical slide block 3-4 is connected with the vertical slide rail 3-3 through a sliding pair; the vertical slide rail 3- 3 is fixed on the peripheral support 7 along the vertical direction; the vertical push nut 3-8 is threadedly connected with the vertical push screw mandrel 3-2, and is fixed with the side wall of the horizontal push mechanism mounting bracket 3-1.

As shown in Figure 6, the rough machining mechanism 4 includes a rough machining hob 4-1, a hob tool rest seat 4-2, a rough machining hob knife rest 4-3, an inner ring gear bracket seat 4-4, an inner gear ring Support 4-5, hob timing belt pulley 4-6 and rough machining drive motor 4-7; the base of rough machining drive motor 4-7 is fixed on the peripheral support 7, the output shaft of rough machining drive motor 4-7 is connected with The rough machining hob tool holder 4-3 is connected through a belt drive; one end of the rough machining hob tool holder 4-3 is fixed to the inner ring gear bracket 4-5, and the other end is connected to the hob tool holder seat 4-2 through a bearing; The inner ring gear support 4-5 is connected with the inner ring gear support seat 4-4 through a bearing, and the hob tool rest seat 4-2 and the inner ring gear support seat 4-4 are all fixed on the peripheral support 7; the rough machining hob 4 One end of -1 is connected with the rough machining hob tool rest 4-3 through a bearing, and the gear teeth at the other end mesh with the internal teeth of the inner gear bracket 4-5; the center line of the rough machining hob 4-1 is in contact with the pencil jack The included angle between the centerlines of 1-1 is 25°; the rough machining hob 4-1 cuts the wooden shell of the lead core outer layer into a conical shape, and the lead core is not cut.

As shown in Figure 7, the finishing mechanism 5 includes a finishing drive motor 5-1, a finishing hob 5-2, a finishing hob installation shaft 5-3 and a finishing hob tool rest 5-4; The output shaft of the motor 5-1 is connected with the finishing hob installation shaft 5-3 by a belt drive; the two ends of the finishing hob installation shaft 5-3 are all supported on the finishing hob tool rest 5-4 by bearings, Finishing hob 5-2 is fixed on the finishing hob mounting shaft.

As shown in Figures 7 and 8, the width adjustment mechanism 6 includes a width adjustment stepper motor 6-1, a bidirectional screw mandrel 6-2, an optical axis 6-3, a finishing mechanism mounting frame 6-4, an axle sleeve 6-5, The two-way screw nut 6-6 and the two-way screw pulley 6-7; the two-way screw pulley 6-7 is fixed on the middle part of the two-way screw 6-2, and the width adjustment stepping motor 6-1 passes through the transmission belt and the two-way screw belt Wheels 6-7 are connected; both ends of the two-way screw mandrel 6-2 are supported on the peripheral bracket 7 by bearings; two two-way screw mandrel adjustment nuts 6-6 are symmetrically arranged at the two ends of the two-way screw mandrel 6-2, and respectively It is fixed with a finishing mechanism installation frame 6-4; a two-way screw nut 6-6 is connected with the two-way screw mandrel 6-2 by left-handed threads, and another two-way screw nut 6-6 is connected with the two-way screw mandrel 6-2 through the right screw thread connection; two bushings 6-5 are sleeved on both ends of the optical axis 6-3, and are respectively fixed with a finishing mechanism mounting frame 6-4; both ends of the optical axis 6-3 are fixed on the peripheral bracket 7, and the optical axis 6-3 is set parallel to the two-way screw rod 6-2; by adjusting the distance between the two two-way screw nuts 6-6, the user can set the lead core width by himself. The finishing hob tool holder 5-4 of each finishing mechanism mounting frame 6-4 is fixed with a finishing mechanism, and the finishing hob mounting shaft 5-3 of two finishing mechanisms is all horizontally arranged, and two finishing The centerline angle of the machining hob mounting shaft 5-3 is 10°; two finishing hobs 5-2 cut two sides and the pen lead of the pencil.

How this drawing pencil auto cutter works:

The pencil is horizontally inserted into the pencil holder 1 from the pencil jack 1-1, and is transported to the roughing mechanism 4 through the horizontal pushing mechanism 2; the roughing hob 4-1 cuts off the pencil skin (shell), and the lead core is not cut and kept Cylindrical; after the rough machining is completed, the horizontal push motor 2-7 drives the horizontal push screw rod 2-4 to rotate, and the horizontal push nut 2-5 drives the pencil to exit the roughing mechanism 4 with the pencil fixture 1; at this time, the horizontal push motor 2- 7 stop working, vertical push motor 3-6 and two finish machining drive motors 5-1 start; vertical push nut 3-8 drives pencil to finish machining mechanism 5 with pencil holder 1, two finish machining hobs 5 -2 Cutting the two sides of the pencil and the lead, so that the pencil is cut into a shape conforming to the drawing specification; by adjusting the distance between the two two-way screw nuts 6-6, the user can set the lead width by himself. The drawing pencil automatic cutter can also be further designed to be controlled by a single-chip microcomputer. After the predetermined lead thickness is obtained, the horizontal pushing mechanism 2, the vertical pushing mechanism 3, the roughing mechanism 4, the finishing mechanism 5 and the width adjusting mechanism 6 are automatically reset. , all motors stop working, take out the pencil.

Claims (1)

1. drawing pencil automatic cutting device, comprises pencil fixture, horizontal delivery device, vertically delivery device, roughing mechanism, fine finishining mechanism, width adjustment mechanism and peripheral frame, it is characterized in that:

Described horizontal delivery device comprises horizontal slide rail support, cross sliding clock, horizontal slide rail, level pushes screw mandrel, level propelling movement nut, pencil fixture mount and level push motor; Base and the horizontal slide rail support of described level propelling movement motor are fixed; Described level pushes screw mandrel and is bearing in horizontal slide rail support and pencil fixture mount respectively by two bearings; The output shaft of level propelling movement motor is pushed screw mandrel with level and is connected by V belt translation; The sidewall of described pencil fixture mount and level push nut and fix, and level propelling movement nut pushes wire rod thread with level and is connected; The top of described pencil fixture and pencil fixture mount and cross sliding clock are fixed; Described cross sliding clock is connected by sliding pair with horizontal slide rail; One end of horizontal slide rail is fixed on horizontal slide rail support; The centerline direction that the glide direction of described horizontal slide rail and level push screw mandrel be arranged in parallel, and pencil fixture offers pencil jack along the glide direction of horizontal slide rail; The aperture of described pencil jack equals the circumscribed circle diameter of hexagon pencil or the face of cylinder diameter of cylindrical pencil;

Described vertical delivery device comprises horizontal delivery device mounting bracket, vertically pushes screw mandrel, upright slide rail, upright slide block, vertically pushes electric machine support, vertically pushes motor, vertically pushes screw rod bracket and vertically push nut; The base of described vertical propelling movement motor with vertically pushes electric machine support and fixes, vertically propelling movement electric machine support and peripheral frame are fixed; The output shaft of vertical propelling movement motor with vertically push screw mandrel and be connected by V belt translation; Described vertical propelling movement screw mandrel is bearing in horizontal delivery device mounting bracket respectively by two bearings and vertically pushes in screw rod bracket; Described vertical propelling movement screw rod bracket is fixed in peripheral frame; One end and the horizontal slide rail support of described horizontal delivery device mounting bracket are fixed, and the other end and upright slide block are fixed; Described upright slide block is connected by sliding pair with upright slide rail; Described upright slide rail is vertically fixed in peripheral frame; Described vertical propelling movement nut with vertically push wire rod thread and be connected, and to fix with the sidewall of horizontal delivery device mounting bracket;

Described roughing mechanism comprises roughing hobboing cutter, hob arbor carriage seat, roughing hob arbor carriage, ring gear carrier base, ring gear support, hob head synchronous pulley and roughing drive motors; The base of described roughing drive motors is fixed in peripheral frame, and the output shaft of roughing drive motors is connected by V belt translation with roughing hob arbor carriage; One end and the ring gear support of described roughing hob arbor carriage are fixed, and the other end is connected by bearing with hob arbor carriage seat; Described ring gear support is connected by bearing with ring gear carrier base, and hob arbor carriage seat and ring gear carrier base are all fixed in peripheral frame; One end of described roughing hobboing cutter is connected by bearing with roughing hob arbor carriage, and the gear teeth of the other end engage with the internal tooth of ring gear support; Angle between the center line of described roughing hobboing cutter and the center line of pencil jack is 20 ~ 30 °;

Described fine finishining mechanism comprises fine finishining drive motors, fine finishining hobboing cutter, fine finishining hobboing cutter installation shaft and fine finishining hob arbor carriage; The output shaft of described fine finishining drive motors is connected by V belt translation with fine finishining hobboing cutter installation shaft; The two ends of described fine finishining hobboing cutter installation shaft are all bearing on fine finishining hob arbor carriage by bearing, and described fine finishining hobboing cutter is fixed in fine finishining hobboing cutter installation shaft;

Described width adjustment mechanism comprises width adjusting stepper motor, Bidirectional-screw, optical axis, fine finishining mechanism installing rack, axle sleeve, Bidirectional-screw nut and Bidirectional-screw belt wheel; Described Bidirectional-screw belt wheel is fixed in the middle part of Bidirectional-screw, and width adjusting stepper motor is connected with Bidirectional-screw belt wheel by driving-belt; The two ends of Bidirectional-screw are all bearing in peripheral frame by bearing; Two Bidirectional-screw adjusting nuts are symmetricly set on the two ends of Bidirectional-screw, and fix with a fine finishining mechanism installing rack respectively; A Bidirectional-screw nut is connected by left hand thread with Bidirectional-screw, and another Bidirectional-screw nut is connected by right-handed thread with Bidirectional-screw; Two axle sleeves are nested with the two ends at optical axis, and fix with a fine finishining mechanism installing rack respectively; The two ends of described optical axis are all fixed in peripheral frame, and optical axis and Bidirectional-screw be arranged in parallel; The fine finishining hob arbor carriage of each fine finishining mechanism installing rack and a fine finishining mechanism is fixed, and the fine finishining hobboing cutter installation shaft of Liang Ge fine finishining mechanism is all horizontally disposed with, and the centerlines of two fine finishining hobboing cutter installation shaft is 5 ~ 15 °.