阅读说明：本技术 翻领成型器曲面自动弯制机 (Curved surface automatic bending machine for lapel former ) 是由 周一届 曹静波 宗耀明 曹惠东 于 2020-08-14 设计创作，主要内容包括：本发明涉及一种翻领成型器曲面自动弯制机,其特征在于包括机架、控制系统、折弯机构总成及纵向位置控制机构,折弯机构总成包括角度控制机构及2套对称设置的折弯执行机构,由所述角度控制机构调整2套所述折弯执行机构的角度,并由所述折弯执行机构对称折弯工件,纵向位置控制机构用于定位夹紧工件并调整工件的纵向位置。本发明结构紧凑,替代人工操作,提高生产效率,减轻工人的劳动强度,降低生产成本,确保翻领成型器曲面的精度、对称性和一致性,提高产品质量。(The invention relates to an automatic bending machine for a curved surface of a lapel former, which is characterized by comprising a rack, a control system, a bending mechanism assembly and a longitudinal position control mechanism, wherein the bending mechanism assembly comprises an angle control mechanism and 2 sets of symmetrically arranged bending execution mechanisms, the angle of the 2 sets of bending execution mechanisms is adjusted by the angle control mechanism, workpieces are symmetrically bent by the bending execution mechanisms, and the longitudinal position control mechanism is used for positioning and clamping the workpieces and adjusting the longitudinal position of the workpieces. The invention has compact structure, replaces manual operation, improves the production efficiency, lightens the labor intensity of workers, reduces the production cost, ensures the precision, the symmetry and the consistency of the curved surface of the lapel former and improves the product quality.)

1. The utility model provides a collar former curved surface automatic bending machine which characterized in that includes:

a frame and a control system;

the bending mechanism assembly is arranged on the rack and comprises an angle control mechanism and 2 sets of symmetrically arranged bending execution mechanisms, the angle of the 2 sets of bending execution mechanisms is adjusted by the angle control mechanism, and workpieces are symmetrically bent by the bending execution mechanisms;

and the longitudinal position control mechanism is arranged on the rack and used for positioning and clamping the workpiece and adjusting the longitudinal position of the workpiece.

2. The lapel former curved surface automatic bending machine according to claim 1, characterized in that: the bending executing mechanism comprises an outer angle arm and an inner angle arm, the outer ends of the outer angle arm and the inner angle arm are fixedly connected together, an inner pin shaft and an outer pin shaft which are horizontally and coaxially arranged are respectively connected with the rack, the inner ends of the outer angle arm and the inner angle arm are respectively and rotatably connected with the outer pin shaft and the inner pin shaft, and a bending filler strip is arranged between the outer angle arm and the inner angle arm and is fixedly connected with the outer angle arm; the bending driving mechanism is arranged in the middle of the inner angle arm and comprises a support fixedly connected with the inner angle arm, a servo motor is fixedly arranged on the support, a screw rod is connected with the servo motor, the lower part of a bending connecting rod is hinged with the support, a screw rod nut hinged to the upper end of the bending connecting rod is in threaded connection with the screw rod, an upper bending strip parallel to and oppositely arranged with the bending filler strip is fixedly connected to the lower end of the bending connecting rod through a cushion block, and round corners are respectively arranged on the opposite sides of the upper bending strip and the bending filler strip; the pressing piece strip is movably embedded in the inner corner arm at the opposite side of the bending filler strip, 2 pressing piece cylinders symmetrically arranged at two sides of the bending driving mechanism are fixedly connected with the inner corner arm, and a piston rod of each pressing piece cylinder is connected with the pressing piece strip;

the angle control mechanism comprises a first electric linear guide rail sliding table which is vertically arranged, the lifting plate is connected with the first electric linear guide rail sliding table, 2 symmetrical angle adjusting connecting rods are arranged on two sides of the lifting plate, the lower ends of the angle adjusting connecting rods are respectively hinged with the lifting plate and 2, and the upper ends of the angle adjusting connecting rods are respectively hinged with the middle part of an outer angle arm of the bending execution mechanism.

3. The lapel former curved surface automatic bending machine according to claim 2, characterized in that: the outer end of the inner angle arm is provided with a waist-shaped hole, and the outer end of the inner angle arm is fixedly connected with the outer end of the outer angle arm through the waist-shaped hole.

4. The lapel former curved surface automatic bending machine according to claim 1, characterized in that: the vertical position control mechanism comprises a second electric linear guide rail sliding table which is vertically arranged, the second electric linear guide rail sliding table is fixedly connected with the rack and the workpiece seat, the second electric linear guide rail sliding table is connected with the workpiece seat, the workpiece seat is provided with a horizontal groove for positioning a workpiece, a compression cylinder which is horizontally arranged is fixedly arranged at the rear side of the workpiece seat, and a piston rod of a compression piece tight cylinder extends into the horizontal groove.

Technical Field

The invention relates to automatic production equipment, in particular to an automatic curved surface bending machine for a lapel former.

Background

In a vertical bag-making, filling and packaging machine, a lapel former is a key component. The design parameters of the lapel former are different due to different bag types and sizes of packaged products, and even for the packaged products with the same bag type size, the design parameters of the lapel former are different due to different specifications and sizes of the vertical bag-making, filling and packaging machine and different positions of the lapel former in the machine, and the design parameters are changed greatly, so that the curved surface of the lapel former is changed greatly.

When the lapel former is manufactured, if the three-dimensional lapel former is manufactured by adopting a material removing processing process of a numerical control machine or a material adding processing process of a three-dimensional printing technology, the requirements can be met technically. But the manufacturing cost is high, and the two processing technologies can hardly be widely adopted. At present, on a multi-row bag-making and filling packaging machine mainly for medicines or health care products of which the packaging objects are calculated by gram, a lapel former is mostly processed by a numerical control machine due to small size of the lapel former. Most of lapel formers on the vertical bag-making, filling and packaging machines are manufactured by sheet metal technology, and the curved surfaces of the formers are formed by bending flat steel plates. Due to the characteristic of the curved surface of the shoulder of the lapel former, a mould which can meet the curved surfaces of various specifications does not exist for bending the curved plate of the lapel former. Therefore, industrially developed countries such as the United states, the United kingdom, the Japan and the like all adopt a manual production mode of workers with abundant production experience in the aspect of sheet metal manufacturing of lapel formers.

The lapel former is formed by combining a collar-shaped curved surface and a cylindrical surface. When the film is drawn on the surface of the former, the longitudinal direction and the transverse direction of the film are not extended or shortened at any position, so that the working curved surfaces of the collar-shaped curved surface and the cylindrical surface can be unfolded into a plane, namely an extensible curved surface, which is also the basic principle that a flat steel plate can be bent into the curved surface of the former by using a sheet metal process.

The collar-shaped surface consists of a space plane and two symmetrical space curved surfaces, the symmetrical space curved surfaces are called shoulder curved surfaces, and when the lapel former is manufactured by adopting a sheet metal process, the manufacturing difficulty is how to accurately bend a plane steel plate into the shoulder curved surfaces.

The shoulder curved surface is an expandable curved surface and is composed of one or more conical surfaces, the conical curved surface is formed by a straight line which is continuously moved around a fixed point, the straight line is mathematically a generatrix, and therefore the shoulder curved surface can be regarded as being composed of infinite straight lines formed by the generatrix at infinite positions. A typical method for manually bending the curved surface of the former at present is to cut a planar steel plate into a to-be-bent steel plate 1 ' in the shape as shown in fig. 9 according to a design drawing, print a plurality of straight lines in fig. 9 on the to-be-bent steel plate 1 ' of the steel plate as a mark line 2 ' by laser with small power, and allow a worker to bend the steel plate in the same direction at the reference line by using the mark line 2 ' on the to-be-bent steel plate 1 ' as a reference during bending; the desired shape after the segment-by-segment bending is the design shape, as shown in fig. 10. The precision and the left-right symmetry degree during bending depend on the experience of workers and the correction level after bending, and the manufacturing method has the problems of low working efficiency, low precision, symmetry and consistency of the manufactured lapel former and difficult quality guarantee.

Disclosure of Invention

The applicant carries out research and improvement aiming at the problems and provides an automatic bending machine for the curved surface of the lapel former, which has a compact structure, replaces manual operation, improves the production efficiency, lightens the labor intensity of workers, reduces the production cost, ensures the precision, symmetry and consistency of the curved surface of the lapel former and improves the product quality.

In order to solve the technical problems, the invention adopts the following technical scheme:

an automatic bending machine for curved surfaces of lapel formers, comprising:

a frame and a control system;

the bending mechanism assembly is arranged on the rack and comprises an angle control mechanism and 2 sets of symmetrically arranged bending execution mechanisms, the angle of the 2 sets of bending execution mechanisms is adjusted by the angle control mechanism, and workpieces are symmetrically bent by the bending execution mechanisms;

and the longitudinal position control mechanism is arranged on the rack and used for positioning and clamping the workpiece and adjusting the longitudinal position of the workpiece.

Further:

the bending executing mechanism comprises an outer angle arm and an inner angle arm, the outer ends of the outer angle arm and the inner angle arm are fixedly connected together, an inner pin shaft and an outer pin shaft which are horizontally and coaxially arranged are respectively connected with the rack, the inner ends of the outer angle arm and the inner angle arm are respectively and rotatably connected with the outer pin shaft and the inner pin shaft, and a bending filler strip is arranged between the outer angle arm and the inner angle arm and is fixedly connected with the outer angle arm; the bending driving mechanism is arranged in the middle of the inner angle arm and comprises a support fixedly connected with the inner angle arm, a servo motor is fixedly arranged on the support, a screw rod is connected with the servo motor, the lower part of a bending connecting rod is hinged with the support, a screw rod nut hinged to the upper end of the bending connecting rod is in threaded connection with the screw rod, an upper bending strip parallel to and oppositely arranged with the bending filler strip is fixedly connected to the lower end of the bending connecting rod through a cushion block, and round corners are respectively arranged on the opposite sides of the upper bending strip and the bending filler strip; the pressing piece strip is movably embedded in the inner corner arm at the opposite side of the bending filler strip, 2 pressing piece cylinders symmetrically arranged at two sides of the bending driving mechanism are fixedly connected with the inner corner arm, and a piston rod of each pressing piece cylinder is connected with the pressing piece strip;

the angle control mechanism comprises a first electric linear guide rail sliding table which is vertically arranged, the lifting plate is connected with the first electric linear guide rail sliding table, 2 symmetrical angle adjusting connecting rods are arranged on two sides of the lifting plate, the lower ends of the angle adjusting connecting rods are respectively hinged with the lifting plate and 2, and the upper ends of the angle adjusting connecting rods are respectively hinged with the middle part of an outer angle arm of the bending execution mechanism.

The outer end of the inner angle arm is provided with a waist-shaped hole, and the outer end of the inner angle arm is fixedly connected with the outer end of the outer angle arm through the waist-shaped hole.

The vertical position control mechanism comprises a second electric linear guide rail sliding table which is vertically arranged, the second electric linear guide rail sliding table is fixedly connected with the rack and the workpiece seat, the second electric linear guide rail sliding table is connected with the workpiece seat, the workpiece seat is provided with a horizontal groove for positioning a workpiece, a compression cylinder which is horizontally arranged is fixedly arranged at the rear side of the workpiece seat, and a piston rod of a compression piece tight cylinder extends into the horizontal groove.

The invention has the technical effects that:

the automatic bending machine for the curved surface of the lapel former disclosed by the invention has a compact structure, replaces manual operation, improves the production efficiency, lightens the labor intensity of workers, reduces the production cost, ensures the precision, symmetry and consistency of the curved surface of the lapel former, and improves the product quality.

Drawings

FIG. 1 is a schematic three-dimensional structure of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a cross-sectional view taken at a-a of fig. 2.

Fig. 4 is a schematic three-dimensional structure of the bending actuator.

FIG. 5 is a front view of the bend actuator.

Fig. 6 is an enlarged sectional view taken at B-B of fig. 5.

Fig. 7 is a partial view taken along line C of fig. 5.

Fig. 8 is a three-dimensional structure diagram of the longitudinal position control mechanism.

Fig. 9 is a schematic structural view of a steel plate to be bent.

Fig. 10 is a schematic three-dimensional structure diagram of a collar-like curved work piece of a lapel former that completes a bend.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the present invention includes a frame 1 and a control system, which is designed and manufactured according to the prior art and cooperatively controls the operation of each component. The bending mechanism assembly 2 and the longitudinal position control mechanism 5 are installed on the rack 1, the bending mechanism assembly 2 comprises an angle control mechanism 3 and 2 sets of bending execution mechanisms 4 which are symmetrically arranged, the angle of the 2 sets of bending execution mechanisms 4 is adjusted by the angle control mechanism 3, the longitudinal position control mechanism 5 positions and clamps a workpiece and adjusts the longitudinal position of the workpiece, and the workpiece is symmetrically bent by the 2 sets of bending execution mechanisms 4.

As shown in fig. 1 to 7, the bending actuator 4 includes an outer corner arm 41 and an inner corner arm 42, the outer ends of which are fixedly connected together, in this embodiment, as shown in fig. 7, a waist-shaped hole 46 is formed in the outer end of the inner corner arm 42, and the outer end of the inner corner arm 42 is fixedly connected to the outer end of the outer corner arm 41 through the waist-shaped hole 46. The inner pin shaft 48 and the outer pin shaft 47 which are horizontally and coaxially arranged are respectively connected with the rack 1, the rack 1 comprises an L-shaped upper fixing plate 102 arranged at the upper end and a reversed-T-shaped front fixing plate 101 arranged at the front side, the inner pin shaft 48 is arranged on the upper fixing plate 102, the outer pin shaft 47 is arranged on the front fixing plate 101, the inner ends of the outer angle arm 41 and the inner angle arm 42 are respectively and rotatably connected with the outer pin shaft 47 and the inner pin shaft 48, and the bending filler strip 43 is arranged between the outer angle arm 41 and the inner angle arm 42 and is fixedly connected with the outer angle arm 41. As shown in fig. 4, 5 and 6, the bending driving mechanism 6 is disposed in the middle of the inner corner arm 42, the bending driving mechanism 6 includes a bracket 62 fixedly connected to the inner corner arm 42, a servo motor 61 is fixedly disposed on the bracket 62, a lead screw 63 is connected to the servo motor 61, the lower portion of a bending connecting rod 65 is hinged to the bracket 62 through a pin 67, the bracket 62 is formed by connecting 2 symmetrically disposed plate-shaped members, a shaft seat 68 is fixedly disposed between the 2 plate-shaped members of the bracket 62, and the inner end of the lead screw 63 is rotatably connected to the shaft seat 68, so as to ensure the stress and the stable positioning of the lead screw 63; the bending connecting rod 65 is formed by connecting 2 symmetrically-arranged plate-shaped components, a screw nut 64 is hinged between the 2 symmetrically-arranged plate-shaped components at the upper end of the bending connecting rod 65, the screw nut 64 is in threaded connection with a screw 63, an upper bending strip 66 which is parallel to and opposite to the bending backing strip 43 is fixedly connected to the lower end of the bending connecting rod 65 through a cushion block 69, round corners are respectively arranged on the opposite sides of the upper bending strip 66 and the bending backing strip 43, the bending operation of a workpiece to be bent is completed through the relative movement between the upper bending strip 66 and the bending backing strip 43, the workpiece bending process is smooth through the round corners of the upper bending strip 66 and the bending backing strip 43, and the surface of the workpiece is not damaged. The pressing strip 45 is movably embedded in the inner corner arm 42 at the opposite side of the bending pad strip 43 (as shown in fig. 6), 2 pressing cylinder 44 symmetrically arranged at the two sides of the bending driving mechanism 6 are fixedly connected with the inner corner arm 42, the piston rod of the pressing cylinder 44 penetrates through the inner corner arm 42 to be connected with the pressing strip 45, during the bending operation of the workpiece to be bent, the piston rod of the pressing cylinder 44 extends out to press the workpiece to be bent between the pressing strip 45 and the bending pad strip 43, and the servo motor 61 drives the bending connecting rod 65 to rotate around the pin shaft 67 through the screw rod 63 and the screw nut 64, so that the upper bending strip 66 at the lower end of the bending connecting rod 65 and the bending pad strip 43 are driven to generate relative motion and the workpiece to be. As shown in fig. 1, 2, and 3, the angle control mechanism 3 includes a first electric linear guide sliding table 31 vertically disposed, the first electric linear guide sliding table 31 is fixedly connected to a front fixing plate 101 of the frame 1, the lifting plate 32 is connected to the first electric linear guide sliding table 31, the lower ends of 2 angle adjusting links 33 symmetrically disposed on both sides of the lifting plate 32 are respectively hinged to the lifting plate 32, and the upper ends of the 2 angle adjusting links 33 are respectively hinged to the middle of the outer angle arm 41 of the bending actuator 4. The first electric linear guideway sliding table 31 drives the lifting plate 32 to lift, and drives the 2 bending actuators 4 to synchronously adjust the angle by taking the outer pin shaft 47 and the inner pin shaft 48 as the axes through the angle adjusting connecting rod 33.

As shown in fig. 1, 2 and 8, the longitudinal position control mechanism 5 includes a second electric linear guide sliding table 51 vertically arranged, the longitudinal position control mechanism 5 is arranged at the rear side of the angle control mechanism 3 of the bending mechanism assembly 2, the second electric linear guide sliding table 51 is fixedly connected with the frame 1, the workpiece seat 52 is connected with the second electric linear guide sliding table 51, the workpiece seat 52 is provided with a horizontal groove 53 for positioning a workpiece, a horizontally arranged pressing cylinder 54 is fixedly arranged at the rear side of the workpiece seat 52, a piston rod of the pressing cylinder 54 extends into the horizontal groove 53, when a bending operation is performed, a workpiece to be bent is inserted into the horizontal groove 53, a piston rod of the pressing air cylinder 54 extends out to position and press the workpiece to be bent in the horizontal groove 53, the second electric linear guide rail sliding table 51 drives the workpiece to be bent to ascend and descend, and the workpiece to be bent is bent at a proper position by the bending mechanism assembly 2.

In actual operation, in an initial state, under the control of the control system, the workpiece seat 52 of the longitudinal position control mechanism 5 is lowered to the lowest position, the outer corner arm 41 and the inner corner arm 42 of the 2 bending actuators 4 of the bending mechanism assembly 2 are lowered to the lowest position (as shown in a double-dotted line in fig. 2) under the action of the angle control mechanism 3, the workpiece 7 to be bent is inserted into the horizontal groove 53 of the workpiece seat 52 of the longitudinal position control mechanism 5 through the gap between the inner corner arm 42 and the bending pad bar 43 of the 2 bending actuators 4 of the bending mechanism assembly 2, and is positioned and pressed by the piston rod of the pressing cylinder 54; at this time, the outer angle arm 41 and the inner angle arm 42 of the 2 bending actuators 4 of the bending mechanism assembly 2 are lifted to the position (as shown in fig. 2) for the first bending under the action of the angle control mechanism 3, meanwhile, the workpiece seat 52 of the longitudinal position control mechanism 5 adjusts the workpiece 7 to be bent to the position for the first bending, the piston rod of the pressing cylinder 44 of the bending actuator 4 extends out to press the workpiece to be bent between the pressing strip 45 and the bending filler strip 43, and the bending connecting rod 65 of the bending driving mechanism 6 generates relative motion between the upper bending strip 66 and the bending filler strip 43 under the driving of the servo motor 61 and performs the first bending on the workpiece to be bent; therefore, under the control of the control system, the actions are repeated for a plurality of times, manual bending operation is simulated, and the workpiece is bent section by section. In the whole operation process, the control system converts the position parameters into control signals and controls the actions of the first electric linear guide rail sliding table 31, the servo motor 61 and the second electric linear guide rail sliding table 51 of the longitudinal position control mechanism 5 in the bending mechanism assembly 2 through control software, and meanwhile, the control system automatically controls the actions of the pressing piece air cylinder 44 and the pressing air cylinder 54, so that marking lines do not need to be engraved on the surface of a workpiece to be bent, the bending of the workpiece is automatically completed, manual operation is replaced, the production efficiency is improved, the production cost is reduced, the precision, the symmetry and the consistency of the lapel former are ensured, and the product quality is improved.