Connector terminal cutting machine

Abstract

The present invention relates to a connector terminal cutting machine, comprising a machine table, a reel feeding mechanism, a material shifting mechanism, a cutting mechanism, a material box and a material box lifting mechanism. The reel feeding mechanism, the material shifting mechanism and the cutting mechanism are arranged in sequence along the flow direction of the terminal material strip. The material box lifting mechanism is arranged just downstream of the cutting mechanism to drive the material box to perform intermittent displacement movement along the up and down directions. The material box is provided with a receiving cavity that is adapted to the appearance of the terminal cut finished parts and is used for stacking and placing the terminal cut finished parts. Whenever the cutting mechanism completes a cutting action on the terminal material strip and settles in the material box, the material box moves downward for a short distance under the drive of the material box lifting mechanism, and each downward movement distance is consistent with the thickness of the terminal material strip. In this way, the sequential stacking of the terminal cut finished parts in the material box is achieved, the regularity of the placement of the terminal cut finished parts is ensured, and the subsequent material picking operation is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of electric connector manufacturing, in particular to a connector terminal cutting machine. Background Art

[0002] Electrical connectors are widely used in various electronic devices to provide electrical connections between various electronic components. They include a number of terminals and a plastic body for the terminals to be inserted. The function of the terminal is mainly to transmit signals or currents. The plastic body is injection molded, and the terminal is usually manufactured by stamping a metal strip, that is, a whole roll of metal strip is stamped to form a whole roll of terminal strip, and then the terminal is cut according to the required terminal length of the electrical connector, and then the cut terminal of the predetermined length is installed in the plastic body to finally form the required electrical connector.

[0003] In the prior art, the cut terminals are directly dropped into a large-volume material box, and after the subsequent transfer operation between workstations, the terminals in the material box are in a mess. As a result, on the one hand, the terminals are easily hooked or pulled, which is very unfavorable for the workers to take out the terminals in the subsequent operation; on the other hand, during the transfer or taking out of the material box, the terminals are easily scratched, which affects the stability of the transmitted signal or current. Therefore, it is urgent for technicians to solve the above problems. Summary of the invention

[0004] Therefore, in view of the above-mentioned existing problems and defects, the designers of the present invention collected relevant information, conducted multiple evaluations and considerations, and after continuous experiments and modifications by technicians with many years of R&D experience in this industry, they finally developed this connector terminal cutting machine.

[0005] In order to solve the above technical problems, the present invention relates to a connector terminal cutting machine, including a machine table, a reel feeding mechanism, a material shifting mechanism, a cutting mechanism and a material box. The reel feeding mechanism, the material shifting mechanism and the cutting mechanism are arranged in sequence along the flow direction of the terminal material strip, and are all fixed on the machine table. The material box is used to collect the terminal cut finished parts. In addition, the connector terminal cutting machine also includes a material box lifting mechanism. The material box lifting mechanism is arranged just downstream of the cutting mechanism to drive the material box to perform intermittent displacement movement along the up and down directions. The material box is provided with a accommodating cavity that is adapted to the shape of the terminal cut finished parts and is used for stacking and placing the terminal cut finished parts. Assuming that the thickness of the terminal cut finished parts is t, every time the cutting mechanism completes a cutting action on the terminal material strip and settles in the material box, the material box lifting mechanism performs a downward movement, and the displacement distance is t, so as to prepare for the subsequent blanking action of the terminal cut finished parts.

[0006] As a further improvement of the technical solution of the present invention, the material box lifting mechanism includes a fixed seat, a linear drive unit and a first bracket. The material box is placed and detachably fixed on the fixed seat, and moves synchronously with the fixed seat. The first bracket is fixed to the machine. The linear drive unit is connected between the fixed seat and the first bracket to drive the fixed seat to perform directional displacement movement.

[0007] As a further improvement of the technical solution of the present invention, the material box lifting mechanism also includes a first slide rail and a first slider assembly. The first slide rail and the slider assembly are composed of a first slide rail and a first slider, wherein the first slide rail is placed vertically along the up and down direction and is detachably fixed to the first bracket. The first slider adapted to the first slide rail is detachably fixed to the fixing seat.

[0008] As a further improvement of the technical solution of the present invention, the linear drive unit includes a first rotating motor, a driving pulley, an annular belt, a driven pulley and a clamping assembly. The driving pulley and the driven pulley are both supported by the first bracket and can freely rotate around their respective central axes. The annular belt is simultaneously sleeved on the driving pulley and the driven pulley. The driving pulley is driven by the first rotating motor to drive the annular belt to perform annular operation. The clamping assembly realizes the clamping action of the annular belt and is connected and fixed to the fixed seat so that the fixed seat performs a directional displacement movement along the up and down direction relative to the first bracket.

[0009] As a further improvement of the technical solution of the present invention, the above-mentioned material box lifting mechanism also includes an automatic limit part. The automatic limit part includes a sensor sheet, an upper groove type wire type photoelectric switch, a middle groove type wire type photoelectric switch and a lower groove type wire type photoelectric switch. The sensor sheet is fixed to the fixed seat and moves synchronously with the fixed seat. The upper groove type wire type photoelectric switch, the middle groove type wire type photoelectric switch and the lower groove type wire type photoelectric switch are fixed to the first bracket and are arranged and arranged in sequence from top to bottom to respectively limit the upper limit position, the initial working position and the lower limit position of the fixed seat.

[0010] As a further improvement of the technical solution of the present invention, the material box includes a bottom plate, a front plate, a rear plate and a right side plate. The bottom plate, the rear plate and the right side plate are fixedly connected to each other. The front plate is placed vertically and rests on the upper plane of the bottom plate, and is connected to the right side plate by means of screws. Along the up-down direction, a series of threaded holes for the above-mentioned screws to be screwed are arranged in an array on the right side wall of the front plate, and correspondingly, a series of waist-shaped through holes extending along the front-back direction for the screws to pass through are arranged on the right side plate.

[0011] As a further improvement of the technical solution of the present invention, the material-dispensing mechanism includes a first mounting substrate, a material-dispensing wheel, a second rotary motor and a follower wheel. The first mounting substrate is fixed to the machine. The material-dispensing wheel and the follower wheel are arranged opposite to each other in the up-down direction and are both supported by the first mounting substrate. An annular avoidance groove is provided around the periphery of the follower wheel. Corresponding to the above-mentioned annular avoidance groove, a series of material-dispensing teeth for moving the terminal material strip forward are evenly distributed around the periphery of the material-dispensing wheel. The material-dispensing wheel performs circumferential rotational motion around its central axis under the action of the second rotary motor.

[0012] As a further improvement of the technical solution of the present invention, the connector terminal cutting machine also includes a leveling mechanism. The leveling mechanism is arranged just upstream of the material-dispensing mechanism, and includes a second mounting substrate, a cover plate, an adjustment block, a lower spring member, a leveling roller, and an adjustment bolt. The number of the adjustment block, the lower spring member, the leveling roller, and the adjustment bolt are all set to be multiple and consistent. Along the flow direction of the terminal strip, a receiving groove extends downward from the top wall of the second mounting substrate. The adjustment blocks are arranged in sequence and built into the receiving groove. The lower spring member is also built into the receiving groove, and is elastically pressed against the lower plane of the adjustment block and the bottom wall of the receiving groove in a one-to-one correspondence. The cover plate is buckled and fixed on the top wall of the second mounting substrate. The adjustment bolt passes through the cover plate, and its free end rests against the upper plane of the adjustment block. The leveling rollers are fixed to the adjustment blocks in a one-to-one correspondence, and follow the adjustment blocks to perform synchronous displacement movement. Adjacent flattening rollers are staggered in the up-down direction to jointly form a shaping channel for the terminal strip to flow through.

[0013] As a further improvement of the technical solution of the present invention, the connector terminal cutting machine also includes a guiding mechanism. The guiding mechanism is arranged just upstream of the leveling mechanism and is also supported by the above-mentioned second mounting substrate. The guiding mechanism includes a crossbeam, a sliding block, a guide wheel, an adjusting screw and a horizontal guide plate. A sliding groove is located on the left side of the accommodating groove and extends backward from the front side wall of the second mounting substrate. A series of guide teeth that follow the terminal material strip to move forward are evenly distributed around the periphery of the guide wheel. The guide wheel is connected to the sliding block as a whole and is integrally built into the sliding groove. The guide wheel can rotate freely around its own central axis in the circumferential direction. The horizontal guide plate is also supported by the second mounting substrate and is arranged just below the guide wheel. Corresponding to the guide teeth, a long strip avoidance groove that is consistent with the flow direction of the terminal material strip extends downward from the upper plane of the horizontal guide plate. The crossbeam is fixed to the second mounting substrate and is buckled just above the sliding groove. The adjusting screw is screwed and passes through the cross beam, and its lower end is fixed to the sliding block. When the adjusting screw is rotated, the sliding block and the guide wheel are dragged to move toward or away from the flat guide plate.

[0014] As a further improvement of the technical solution of the present invention, the cutting mechanism includes a second bracket, a lower cutting knife assembly, an upper cutting knife assembly, a force transmission lever, a linear motion element, a second slide rail slider assembly and a transition plate. The lower cutting knife assembly is supported by the second bracket. The upper cutting knife assembly is arranged in front of the second bracket and is opposite to the lower cutting knife assembly. The second slide rail slider assembly is composed of a second slide rail and a second slider. The transition plate connects the second slide rail and the upper cutting knife assembly at the same time. The second slider adapted to the second slide rail is detachably fixed to the front side wall of the second bracket. An installation groove extends downward from the top of the second bracket. The linear motion element is fixed to the machine table and is arranged directly behind the second bracket. The force transmission lever is composed of a forward extension section, an assembly section and a rear section in sequence. The assembly section is built-in and hinged in the installation groove. The power output end of the linear motion element is hinged to the rear section, and under the action of push and pull forces, the force transmission lever swings freely around the hinge center to drag the upper cutting knife assembly to move toward / away from the lower cutting knife assembly.

[0015] As a further improvement of the technical solution of the present invention, the cutting mechanism also includes a roller. The roller is detachably fixed to the forward extension section, and correspondingly, a force transmission groove is provided on the upper cutting knife assembly. The roller is built into the force transmission groove. When the force transmission lever swings, the roller rolls freely along the force transmission groove.

[0016] As a further improvement of the technical solution of the present invention, the unwinding feeding mechanism includes a third bracket, a feeding turntable, a winding paper turntable, a third rotating motor and a material strip guide. The third bracket is fixed to the machine. The feeding turntable and the winding paper turntable are both supported by the third bracket. There is no driving power input to the feeding turntable at all times, and when the material shifting mechanism shifts the terminal material strip to move forward, it can rotate freely in the circumferential direction around its own central axis. The third rotating motor is arranged directly behind the winding paper turntable to drive the winding paper turntable to rotate freely in the circumferential direction around its own central axis. The material strip guide is placed directly below the feeding turntable, and a material trough is provided on it for carrying the terminal material strip after unwinding.

[0017] As a further improvement of the technical solution of the present invention, the material belt guide comprises a guide body and an arc-shaped guide plate. The material trough is provided on the guide body. The arc-shaped guide plate is arranged on the left side of the guide body and is connected to the guide body. The arc-shaped guide plate is located opposite to the material trough.

[0018] Compared with the connector terminal cutting machine of the traditional design structure, in the technical solution disclosed in the present invention, a material box lifting mechanism is additionally provided downstream of the cutting mechanism. A receiving cavity is provided in the material box, which is adapted to the shape of the terminal cutting finished parts and is used for stacking and placing the terminal cutting finished parts. The material box is supported and clamped by the material box lifting mechanism, and performs directional displacement movement in the up and down directions. Whenever the cutting mechanism completes a cutting action on the terminal strip and settles in the material box, the material box moves downward for a short distance under the drive of the material box lifting mechanism, and each downward movement distance is consistent with the thickness of the terminal strip. By adopting the above-mentioned technical solution, the sequential stacking of the terminal cut finished parts in the material box is achieved, and the phenomenon of falling layer by layer due to the shaking of the material box in the subsequent transportation process is prevented, thereby ensuring the regularity of the placement of the terminal cut finished parts. In this way, on the one hand, in the actual material picking operation process, the workers only need to hold the terminal cut finished parts layer by layer and in sequence, thereby reducing the difficulty of the workers' operation and achieving a higher material picking efficiency; on the other hand, in the process of transporting or picking up the material box, the scratching phenomenon between the terminal cut finished parts is prevented, thereby ensuring the stability of the signal and current transmission of the connector after molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a three-dimensional schematic diagram of the connector terminal cutting machine in the present invention.

[0021] Figure 2 yes Figure 1 A partial enlarged view of I.

[0022] Figure 3 yes Figure 1 Front view of .

[0023] Figure 4 yes Figure 1 Top view of the .

[0024] Figure 5 It is a three-dimensional schematic diagram of the material shifting mechanism in the connector terminal cutting machine of the present invention.

[0025] Figure 6 It is a three-dimensional schematic diagram of a cutting mechanism in the connector terminal cutting machine of the present invention from one viewing angle.

[0026] Figure 7It is a three-dimensional schematic diagram of another viewing angle of the cutting mechanism in the connector terminal cutting machine of the present invention.

[0027] Figure 8 It is a three-dimensional schematic diagram of a material box in the connector terminal cutting machine of the present invention from one viewing angle.

[0028] Fig. 9 It is a three-dimensional schematic diagram of another viewing angle of the material box in the connector terminal cutting machine of the present invention.

[0029] Fig.10 It is a three-dimensional schematic diagram of a material box lifting mechanism in the connector terminal cutting machine of the present invention from one viewing angle.

[0030] Fig.11 yes Fig.10 main view.

[0031] Fig.12 yes Fig.11 AA section view.

[0032] Fig.13 It is a three-dimensional schematic diagram of another viewing angle of the material box lifting mechanism in the connector terminal cutting machine of the present invention.

[0033] Fig.14 It is a three-dimensional schematic diagram of a combination of a flattening mechanism and a guiding mechanism in a connector terminal cutting machine of the present invention.

[0034] Fig.15 yes Fig.14 Top view of the .

[0035] Fig.16 yes Fig.15 BB cross-sectional view.

[0036] Fig.17 It is a three-dimensional schematic diagram of a material strip guide in a connector terminal cutting machine of the present invention.

[0037] Fig.18 It is a three-dimensional schematic diagram of a section of the terminal strip in the present invention.

[0038] 1-machine table; 2-unwinding feeding mechanism; 21-third bracket; 22-feeding turntable; 23-winding paper turntable; 24-third rotating motor; 25-material belt guide; 251-guide body; 2511-material trough; 252-arc-shaped material guide plate; 3-feeding mechanism; 31-first mounting base plate; 32-feeding wheel; 321-feeding tooth; 33-second rotating motor; 34-following wheel; 341-annular avoidance groove; 4-cutting Mechanism; 41-second bracket; 411-mounting groove; 42-lower cutting knife assembly; 43-upper cutting knife assembly; 431-upper cutting knife; 432-mounting seat; 4321-force transmission groove; 44-force transmission lever; 441-forward extension section; 442-assembly section; 443-rear section; 45-linear motion element; 46-second slide rail slider assembly; 47-transition plate; 48-roller; 5-material box; 51-bottom plate; 52-front plate ;53-rear plate;54-right side plate;55-screw;6-material box lifting mechanism;61-fixed seat;62-linear drive unit;621-first rotating motor;622-driving pulley;623-annular belt;624-driven pulley;625-clamping assembly;63-first bracket;64-first slide rail slider assembly;65-automatic limiter;651-sensor;652-upper groove type wire type photoelectric switch;653 -Middle groove type wire type photoelectric switch; 654-lower groove type wire type photoelectric switch; 7-leveling mechanism; 71-second mounting base plate; 72-cover plate; 73-adjusting block; 74-lower spring member; 75-leveling roller; 76-adjusting bolt; 8-guiding mechanism; 81-crossbeam; 82-sliding block; 83-material guide wheel; 831-material guide tooth; 84-adjusting screw; 85-flat material guide plate; 851-long strip avoidance groove. DETAILED DESCRIPTION

[0039] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "front", "back", "left", "right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0040] The present invention will be further described in detail below with reference to specific embodiments. Figure 1 , Figure 2The three-dimensional schematic diagram of the connector terminal cutting machine in the present invention and its partial enlarged diagram are respectively shown. It can be seen that it is mainly composed of a machine table 1, a reeling and feeding mechanism 2, a material shifting mechanism 3, a cutting mechanism 4, a material box 5 and a material box lifting mechanism 6. Among them, the reeling and feeding mechanism 2, the material shifting mechanism 3, and the cutting mechanism 4 are arranged in sequence along the flow direction of the terminal material strip, and are all fixed on the above-mentioned machine table 1. The material box 5 is used to collect the terminal cutting finished parts cut by the terminal material strip. It should be emphasized here that the material box lifting mechanism 6 is arranged just downstream of the cutting mechanism 4 to drive the material box 5 to perform intermittent displacement movement in the up and down directions. A accommodating cavity that is adapted to the shape of the terminal cutting finished parts and is used for stacking and placing the terminal cutting finished parts is provided in the material box 5. Assuming that the thickness of the terminal cut product is t, every time the cutting mechanism 4 completes a cutting action on the terminal strip and settles in the material box 5, the material box lifting mechanism 6 will move downward once, and the displacement distance is t, to prepare for the subsequent blanking action of the terminal cut product. By adopting the above technical solution, the regularity of the terminal cut product placed in the material box 5 is effectively ensured. In this way, on the one hand, in the actual material picking operation, the worker can take the terminal cut product layer by layer and in sequence, thereby reducing the difficulty of the worker's operation, thereby achieving a higher material picking efficiency; on the other hand, in the process of transporting or picking the material box 5, the scratching phenomenon between the terminal cut product and the terminal cut product is eliminated, thereby ensuring the stability of the connector signal and current transmission after molding.

[0041] It is known that the above-mentioned material box lifting mechanism 6 can adopt a variety of design structures to complete the intermittent lifting action of the material box 5. However, a preferred structure with simple design, easy implementation, and convenient subsequent maintenance is recommended here, which is as follows: The material box lifting mechanism 6 is mainly composed of a fixed seat 61, a linear drive part 62 and a first bracket 63. The material box 5 is placed and detachably fixed on the above-mentioned fixed seat 61, and follows the fixed seat 61 to perform synchronous displacement movement. The first bracket 63 is fixed to the machine 1. The linear drive part 62 is connected between the fixed seat 61 and the first bracket 63 to drive the fixed seat 61 to perform directional displacement movement (such as Fig.10 ).

[0042] Generally speaking, the linear drive part 62 is preferably composed of a first rotating motor 621, a driving pulley 622, an annular belt 623, a driven pulley 624 and a clamping assembly 625. The driving pulley 622 and the driven pulley 624 are both supported by the above-mentioned first bracket 63, and can freely rotate around their respective central axes. The annular belt 623 is simultaneously mounted on the driving pulley 622 and the driven pulley 624. The driving pulley 622 is driven by the first rotating motor 621 to drive the annular belt 623 to perform annular operation. The clamping assembly 625 realizes the clamping action of the annular belt 623, performs synchronous displacement movement with the annular belt 623, and is connected and fixed to the fixed seat 61, so that the fixed seat 61 performs directional displacement movement along the up and down directions relative to the first bracket 63 (such as Fig.11 , 12 As shown in ). The linear drive unit 62 has a simple structural design and a fast response speed. More importantly, the first rotary motor 621 has the characteristics of fast start, stop, forward and reverse rotation, so as to facilitate the intermittent action drive and control of the material box 5.

[0043] As a further optimization of the above technical solution, the material box lifting mechanism 6 can also be provided with a first slide rail slider assembly 64 according to actual conditions. The first slide rail slider assembly 64 is composed of a first slide rail and a first slider, wherein the first slide rail is placed vertically along the up and down direction and is detachably fixed to the first bracket 63. The first slider matched with the first slide rail is detachably fixed to the fixing seat 61 (such as Fig.10 The presence of the first slide rail slider assembly 64 effectively improves the directional accuracy of the fixed seat 61 during the displacement process in the up-down direction. In this way, the alignment accuracy between the material box 5 and the cutting mechanism 4 is ensured, so that the finished terminal parts are accurately dropped into it.

[0044] Furthermore, in order to ensure the safety of the operation of the connector terminal cutting machine and the high alignment accuracy of the material box 5 and the cutting mechanism 4, the above-mentioned material box lifting mechanism 6 can also be equipped with an automatic limiter 65 (such as Fig.10 ). The automatic limiter 65 includes a sensing sheet 651, an upper groove type wire type photoelectric switch 652, a middle groove type wire type photoelectric switch 653, and a lower groove type wire type photoelectric switch 654. The sensing sheet 651 is fixed to the above-mentioned fixed seat 61, and moves synchronously with the fixed seat 61. The upper groove type wire type photoelectric switch 652, the middle groove type wire type photoelectric switch 653, and the lower groove type wire type photoelectric switch 654 are fixed to the first bracket 63, and are arranged and arranged in sequence from top to bottom to respectively limit the upper limit position, the initial working position, and the lower limit position (as shown in FIG. 1 ) of the fixed seat 61. Fig.13 ).

[0045] It should be noted here that after the connector terminal cutting machine has been running for a period of time, its operating accuracy will inevitably be greatly reduced, which will lead to a significant decrease in the alignment accuracy of the material box 5 and the cutting mechanism 4. In order to solve this technical problem, the above-mentioned material box lifting mechanism 6 can also be additionally provided with a first short slide rail, a second short slide rail, and a third short slide rail according to actual conditions. Correspondingly, a slide groove compatible with the above-mentioned first short slide rail, the second short slide rail, and the third short slide rail is provided on the right side wall of the first bracket 63. The upper groove-type wire-type photoelectric switch 652, the middle groove-type wire-type photoelectric switch 653, and the lower groove-type wire-type photoelectric switch 654 are fixed as a whole with the above-mentioned first short slide rail, the second short slide rail, and the third short slide rail in a one-to-one correspondence, and follow the synchronous displacement movement (such as Fig.13 In this way, when the relative height positions of the upper groove type wire type photoelectric switch 652, the middle groove type wire type photoelectric switch 653, and the lower groove type wire type photoelectric switch 654 need to be adjusted, the first short slide rail, the second short slide rail, and the third short slide rail can be dragged accordingly along the up and down directions.

[0046] Depend on Figure 8 As can be seen from the figure, the material box 5 is mainly composed of a bottom plate 51, a front plate 52, a rear plate 53 and a right side plate 54. The bottom plate 51, the rear plate 53 and the right side plate 54 are fixedly connected to each other. The front plate 52 is placed vertically and leans against the upper plane of the bottom plate 51, and is connected to the right side plate 54 by means of screws 55. Along the up-down direction, a series of threaded holes for the screws 55 to be screwed are arranged on the right side wall of the front plate 52, and correspondingly, a series of waist-shaped through holes (such as slits) extending along the front-back direction for the screws 55 to pass through are arranged on the right side plate 54. Figure 8 , 9 By adopting the above technical solution, on the one hand, it is convenient to adjust the size of the accommodating cavity according to the actual size of the terminal cut finished parts, so as to ensure the relative position consistency of the stacked terminal cut finished parts; on the other hand, when the model of the terminal strip changes, it is convenient to adjust the width value of the accommodating cavity according to its actual width, thereby effectively expanding the application range of the material box 5.

[0047] The adjustment method of the material box 5 is as follows: first, loosen the screw 55, and then adjust the relative position of the front plate 52 along the front-to-back direction until the width of the enclosed accommodating cavity matches the width of the terminal cut product, and finally tighten the screw 55.

[0048] As a further refinement of the structure of the above-mentioned connector terminal cutting machine, the material dispensing mechanism 3 is preferably composed of several parts such as a first mounting substrate 31, a material dispensing wheel 32, a second rotary motor 33 and a follower wheel 34. The first mounting substrate 31 is fixed to the machine table 1. The material dispensing wheel 32 and the follower wheel 34 are arranged opposite to each other in the up and down directions, and are both supported by the first mounting substrate 31. An annular avoidance groove 341 is provided around the periphery of the follower wheel 34. Corresponding to the above-mentioned annular avoidance groove 341, a series of material dispensing teeth 321 for moving the terminal material strip forward are evenly distributed around the periphery of the material dispensing wheel 32. Under the action of the second rotary motor 33, the material dispensing wheel 32 performs circumferential rotational motion around its central axis (such as Figure 5 As shown in ). The above-mentioned material-dispensing mechanism 3 is simple in design structure, easy to implement, and convenient for subsequent maintenance. In addition, more importantly, it is easy to achieve accurate feeding of the terminal strip, and eliminates the "slipping" phenomenon that often occurs in the process of conventional feeding (most of which are friction wheel structures, using the friction force generated by the pre-tightening force to complete the feeding of the terminal strip).

[0049] like Fig.18 As shown in , there are a series of process holes in a linear array along the length direction of the terminal strip. And the spacing between the process holes is set to a; assuming that the material picking wheel 32 is completely flattened along its periphery, the distance between its material picking teeth 321 is set to b, then a=b.

[0050] The working principle of the material-dispensing mechanism 3 is as follows: the material-dispensing wheel 32 is driven by the second rotary motor 33 to rotate, and at the same time, one of the material-dispensing teeth 321 arranged on its periphery is inserted into a process hole (such as Fig.18 ), and gradually separates from the process hole during the rotation of the paddle wheel 32, completing one feeding of the terminal strip; then, the paddle wheel 32 continues to rotate, so that another paddle tooth 321 thereon repeats the above action to complete the secondary feeding operation; the above action process is repeated multiple times during the rotation of the paddle wheel 32, and finally the continuous feeding operation of the terminal strip is completed.

[0051] It is known that when the thickness of the terminal strip is relatively thin, it is very easy to "warp" during the flow process, which causes it to fail to smoothly and automatically enter the material-dispensing mechanism 3, thereby making it unnecessary to provide manual assistance during the feeding process. In view of this, when the thickness of the terminal strip is less than 0.2 mm, a flattening mechanism 7 (such as Fig.14 ), in order to continuously and in real time flatten the terminal strip to ensure that it has good flatness.

[0052] As a further refinement of the structure of the above-mentioned leveling mechanism 7, it includes a second mounting substrate 71, a cover plate 72, an adjustment block 73, a lower spring member 74, a leveling roller 75 and an adjustment bolt 76. The number of the adjustment block 73, the lower spring member 74, the leveling roller 75 and the adjustment bolt 76 is set to be multiple and consistent. Along the flow direction of the terminal strip, a receiving groove extends downward from the top wall of the second mounting substrate 71. The adjustment blocks 73 are arranged in sequence and built into the receiving groove. The lower spring member 74 is also built into the receiving groove, and is elastically pressed against the lower plane of the adjustment block 73 and the bottom wall of the receiving groove in a one-to-one correspondence. The cover plate 72 is detachably buckled and fixed on the top wall of the second mounting substrate 71. The adjustment bolt 76 passes through the cover plate 72, and its free end is pressed against the upper plane of the adjustment block 73. The leveling roller 75 is fixed on the adjustment block 73 in a one-to-one correspondence, and follows the adjustment block 73 to perform synchronous displacement movement. The adjacent flattening rollers 75 are staggered in the vertical direction to form a shaping channel (such as Fig.14 , 15 , 16). It should be noted that, due to the existence of the lower spring member 74, the terminal strip is always kept in an elastically compressed state, which prevents the surface from being damaged by compression due to rigid extrusion, and facilitates the subsequent adjustment of the shaping channel width by rotating the adjustment bolt 76, thereby expanding the model range of the terminal strip that can be processed by the flattening mechanism 7.

[0053] It is known that in the process of flattening the terminal strip with the help of the flattening mechanism 7, due to the influence of the installation accuracy of the flattening roller 75 itself and its surface wear factors, the terminal strip is very likely to "deviate" when flowing in the above-mentioned overall channel. In view of this, as a further optimization of the structure of the connector terminal cutting machine, it is also provided with a guiding mechanism 8. The guiding mechanism 8 is arranged just upstream of the flattening mechanism 7 and is also supported by the above-mentioned second mounting substrate 71 (such as Fig.14 ).

[0054] As a further refinement of the structure of the above-mentioned guiding mechanism 8, it includes a crossbeam 81, a sliding block 82, a guide wheel 83, an adjusting screw 84 and a horizontal guide plate 85. A sliding groove is located on the left side of the accommodating groove and extends backward from the front side wall of the second mounting substrate 71. A series of guide teeth 831 that follow the terminal material strip to move forward are evenly distributed around the periphery of the guide wheel 83. The guide wheel 83 is connected to the sliding block 82 as a whole, and the whole is built into the sliding groove, and can perform directional displacement movement along the sliding groove. The guide wheel 83 can perform circumferential free rotation movement around its own central axis. The horizontal guide plate 85 is also supported by the second mounting substrate 71 and is arranged directly below the guide wheel 73. Corresponding to the guide teeth 831, a long strip avoidance groove 851 that is consistent with the flow direction of the terminal material strip extends downward from the upper plane of the horizontal guide plate 85. The crossbeam 81 is detachably fixed to the second mounting base plate 71 and is buckled over the sliding groove. The adjusting screw 84 is screwed and passes through the crossbeam 81, and its lower end is fixed to the sliding block 72. When the adjusting screw 84 is rotated, the sliding block 82 and the guide wheel 83 are dragged to move toward / away from the flat guide plate 85 (such as Fig.14 By adopting the above technical solution, the terminal strip has a sufficiently high alignment accuracy relative to the above-mentioned flattening mechanism 7 at the moment of feeding, thereby ensuring that the terminal strip passes through the above-mentioned shaping channel accurately and preventing the occurrence of "deviation phenomenon".

[0055] Furthermore, under the premise of ensuring sufficient shearing force, in order to ensure that the cutting machine 4 has a relatively simple design structure and is conducive to manufacturing and molding, the above-mentioned cutting mechanism 4 is preferably composed of several parts such as the second bracket 41, the lower cutting knife assembly 42, the upper cutting knife assembly 43, the force transmission lever 44, the linear motion element 45, the second slide rail slider assembly 46 and the transition plate 47. The upper cutting knife assembly 43 is arranged in front of the second bracket 41 and is opposite to the above-mentioned lower cutting knife assembly 43. The lower cutting knife assembly 43 is supported by the second bracket 41, and includes an upper cutting knife 431 and a mounting seat 432. The upper cutting knife 431 is detachably fixed to the mounting seat 432 by means of fasteners. The second slide rail slider assembly 46 is composed of a second slide rail and a second slider. The transition plate 47 is simultaneously connected to the above-mentioned second slide rail and the mounting seat 432. The second slider adapted to the second slide rail is detachably fixed to the front side wall of the second bracket 41. A mounting groove extends downward from the top of the second bracket 41. The linear motion element 45 is fixed to the machine 1 and is arranged directly behind the second bracket 41. The force transmission lever 44 is composed of a forward extension section 441, an assembly section 442 and a rear section 443 in sequence. The assembly section 443 is built-in and hinged in the above-mentioned mounting groove. The power output end of the linear motion element 45 is hinged to the rear section 443, and under the action of the push-pull force, the force transmission lever 44 is free to swing around the hinge center to drag the upper cutting knife assembly 43 to perform a displacement movement toward / away from the lower cutting knife assembly 42 (such as Figure 6 , 7 It should be noted that, under the premise of a certain shear force, the existence of the force transmission lever 44 can effectively reduce the requirement of the cutting mechanism 4 for the output driving force of the linear motion element 45, thereby facilitating the miniaturization of the linear motion element 45.

[0056] Furthermore, as a further optimization of the above technical solution, the above cutting mechanism 4 can also be provided with a roller 48 according to actual conditions. The roller 48 is detachably fixed to the above-mentioned forward extension section 441, and correspondingly, a force transmission groove 4321 is provided on the mounting seat 432. The roller 48 is built into the force transmission groove 4321. When the force transmission lever 44 swings, the roller 48 rolls freely along the above-mentioned force transmission groove 4321 (such as Figure 6 , 7 As shown in ). The following beneficial effects are produced by adopting the above technical solution: the force transmission process of the cutting mechanism 4 is smoother and has a higher force transmission efficiency; in addition, the force transmission lever 44 realizes the transmission of force to the upper cutting knife assembly 43 by means of the roller 48, effectively avoiding the occurrence of excessive wear caused by "sliding contact" during the force transmission process, thereby effectively improving the service life of the cutting mechanism 4 and reducing the frequency and cost of subsequent maintenance.

[0057] Furthermore, the unwinding feeding mechanism 2 is preferably composed of several parts such as a third bracket 21, a feeding turntable 22, a winding paper turntable 23, a third rotary motor 24 and a material strip guide 25. The third bracket 21 is fixed to the machine 1. The feeding turntable 22 and the winding paper turntable 23 are both supported by the third bracket 21. There is no driving power input to the feeding turntable 22 at all times, and when the material shifting mechanism 3 shifts the terminal material strip to move forward, it can rotate freely in the circumferential direction around its own central axis. The third rotary motor 24 is arranged directly behind the winding paper turntable 23 to drive the winding paper turntable 23 to rotate freely in the circumferential direction around its own central axis (such as Figure 4 The strip guide 25 is placed directly below the feed turntable 22 and is provided with a slot 2511 (as shown in FIG. Figure 3 ). Under the basic premise of ensuring the smooth feeding of the terminal strip, the feeding turntable 22 itself is always kept in a free rotation state (no power input is required throughout the whole process), thereby effectively simplifying the design structure of the feeding turntable 22 and preventing the occurrence of the "pulling material" phenomenon caused by the asynchronous driving.

[0058] It is known that the feeding of the terminal strip is mainly driven by the material-dividing force of the material-dividing mechanism 3, and the feeding turntable 22 itself is always kept in a free rotation state. When the material-dividing mechanism 3 stops suddenly, it can instantly stop the feeding action, and the feeding turntable 22 is still kept in a rotating state under the action of inertia force, which will inevitably lead to excessive supply of the terminal strip, causing it to be stacked on the strip guide 25, and even worse, the terminal strip exceeds the strip guide 25 and the "overlapping" phenomenon occurs; and when the material-dividing mechanism 3 restarts, the edge of the strip guide 25 can easily cause cuts or scratches to the terminal strip. In view of this, the strip guide 25 is preferably a split structure, and it includes a guide body 251 and an arc-shaped guide plate 252. The above-mentioned material trough 2511 is opened on the guide body 251. The arc-shaped guide plate 252 is arranged on the left side of the guide body 251 and is connected to the guide body 251. The arc-shaped guide plate 252 is located opposite to the material slot 2511 (such as Fig.17 ).

[0059] The working principle of the above connector terminal cutting machine is as follows: the accommodating cavity provided in the material box 5 is adapted to the shape of the terminal cut finished part to ensure the stacking stability after the terminal cut finished part is placed. The material box 5 is supported and clamped by the material box lifting mechanism 6, and performs directional displacement movement in the up and down directions. Under the action of the material diverting mechanism 3, the feeding turntable 22 continuously completes the discharge operation of the terminal material strip, and at the same time, the paper reel turntable 23 completes the collection of the protective film or paper attached to the terminal material strip; then, the cutting mechanism 4 cuts the terminal material strip according to the terminal length required by the electrical connector. Whenever the cutting mechanism completes a cutting action on the terminal material strip and settles it in the material box 5, the material box 5 moves downward a small distance under the drive of the material box lifting mechanism 6, and the downward distance each time is consistent with the thickness of the terminal material strip, thereby realizing the sequential stacking of the terminal cut product parts in the material box 5 and preventing them from falling layer by layer due to the shaking of the material box 5 itself during the subsequent transportation process, thereby ensuring the regularity of the placement of the terminal cut product parts.

[0060] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A connector terminal cutting machine, comprising a machine platform, a reel feeding mechanism, a material shifting mechanism, a cutting mechanism and a material box; the reel feeding mechanism, the material shifting mechanism and the cutting mechanism are arranged in sequence along the flow direction of the terminal material strip and are all fixed on the machine platform; the material box is used to collect the finished terminal cutting parts, characterized in that, It also includes a material box lifting mechanism; the material box lifting mechanism is arranged just downstream of the cutting mechanism to drive the material box to perform intermittent displacement movement in the up and down directions; the material box is provided with a receiving cavity adapted to the shape of the terminal cutting finished parts for stacking and placing the terminal cutting finished parts; assuming that the thickness of the terminal cutting finished parts is t, then every time the cutting mechanism completes a cutting action on the terminal material strip and settles in the material box, the material box lifting mechanism performs a downward movement, and the displacement distance is t, so as to prepare for the subsequent blanking action of the terminal cutting finished parts; The material box lifting mechanism includes a fixed seat, a linear drive unit and a first bracket; the material box is placed and detachably fixed on the fixed seat, and moves synchronously with the fixed seat; the first bracket is fixed to the machine platform; the linear drive unit is connected between the fixed seat and the first bracket to drive the fixed seat to move in a directional manner; The cutting mechanism comprises a second bracket, a lower cutting knife assembly, an upper cutting knife assembly, a force transmission lever, a linear motion element, a second slide rail and slider assembly and a transition plate; the lower cutting knife assembly is supported by the second bracket; the upper cutting knife assembly is arranged in front of the second bracket and is opposite to the lower cutting knife assembly; the second slide rail and slider assembly is composed of a second slide rail and a second slider; the transition plate simultaneously connects the second slide rail and the upper cutting knife assembly; and the second slider adapted to the second slide rail is detachably fixed to the second bracket The front side wall of the frame is provided with a mounting groove extending downward from the top of the second bracket; the linear motion element is fixed to the machine platform and arranged directly behind the second bracket; the force transmission lever is sequentially composed of a forward extension section, an assembly section and a rear section; the assembly section is built-in and hinged in the mounting groove; the power output end of the linear motion element is hinged to the rear section, and under the action of the push-pull force, the force transmission lever is freely swung around the hinge center to drag the upper cutting knife assembly to move toward / away from the lower cutting knife assembly; The unwinding and feeding mechanism includes a third bracket, a feeding turntable, a winding paper turntable, a third rotating motor and a material strip guide; the third bracket is fixed to the machine platform; the feeding turntable and the winding paper turntable are both supported by the third bracket; the feeding turntable has no driving power input at all times, and when the material shifting mechanism shifts the terminal material strip to move forward, it can rotate freely in the circumference around its own central axis; the third rotating motor is arranged directly behind the winding paper turntable to drive the winding paper turntable to rotate freely in the circumference around its own central axis; the material strip guide is placed directly below the feeding turntable, and a material trough is provided on it for carrying the terminal material strip after unwinding is completed.

2. The connector terminal cutting machine according to claim 1, characterized in that: The material box lifting mechanism also includes a first slide rail slider assembly; the first slide rail slider assembly is composed of a first slide rail and a first slider; wherein the first slide rail is placed vertically along the up and down direction and is detachably fixed to the first bracket; and the first slider adapted to the first slide rail is detachably fixed to the fixed seat.

3. The connector terminal cutting machine according to claim 2, characterized in that: The linear drive unit includes a first rotating motor, a driving pulley, an annular belt, a driven pulley and a clamping assembly; the driving pulley and the driven pulley are both supported by the first bracket and can freely rotate around their respective central axes; the annular belt is simultaneously sleeved on the driving pulley and the driven pulley; the driving pulley is driven by the first rotating motor to drive the annular belt to perform annular operation; the clamping assembly realizes the clamping action of the annular belt, and is connected and fixed to the fixing seat, so that the fixing seat performs a directional displacement movement along the up and down direction relative to the first bracket.

4. The connector terminal cutting machine according to claim 1, characterized in that: The material box lifting mechanism also includes an automatic limit part; the automatic limit part includes a sensing plate, an upper groove type wire type photoelectric switch, a middle groove type wire type photoelectric switch and a lower groove type wire type photoelectric switch; the sensing plate is fixed to the fixed seat and follows the fixed seat to perform synchronous displacement movement; the upper groove type wire type photoelectric switch, the middle groove type wire type photoelectric switch and the lower groove type wire type photoelectric switch are fixed to the first bracket and are arranged and arranged in sequence from top to bottom to respectively limit the upper limit position, initial working position and lower limit position of the fixed seat.

5. The connector terminal cutting machine according to claim 1, characterized in that: The material box includes a bottom plate, a front plate, a rear plate and a right side plate; the bottom plate, the rear plate and the right side plate are fixedly connected to each other; the front plate is placed vertically and rests on the upper plane of the bottom plate, and is connected to the right side plate by means of screws; along the up and down directions, a series of threaded holes for the screws to screw into are arranged in an array on the right side wall of the front plate, and correspondingly, a series of waist-shaped through holes for the screws to pass through and extending along the front and back directions are provided on the right side plate.

6. The connector terminal cutting machine according to any one of claims 1 to 5, characterized in that: The material-moving mechanism includes a first mounting substrate, a material-moving wheel, a second rotating motor and a following wheel; the first mounting substrate is fixed to the machine platform; the material-moving wheel and the following wheel are arranged opposite to each other in the up-down direction and are both supported by the first mounting substrate; an annular avoidance groove is provided around the periphery of the following wheel; corresponding to the annular avoidance groove, a series of material-moving teeth for moving the terminal material strip forward are uniformly distributed around the periphery of the material-moving wheel; the material-moving wheel rotates circumferentially around its central axis under the action of the second rotating motor.

7. The connector terminal cutting machine according to claim 6, characterized in that: The invention also includes a leveling mechanism; the leveling mechanism is arranged just upstream of the material-dispensing mechanism, and includes a second mounting substrate, a cover plate, an adjusting block, a lower spring member, a leveling roller and an adjusting bolt; the number of the adjusting block, the lower spring member, the leveling roller and the adjusting bolt are all set to be multiple and consistent; along the flow direction of the terminal strip, a receiving groove extends downward from the top wall of the second mounting substrate; the adjusting blocks are arranged in sequence and built into the receiving groove; the lower spring member is also built into the receiving groove, and is elastically pressed against the lower plane of the adjusting block and the bottom wall of the receiving groove one by one; the cover plate is buckled and fixed on the top wall of the second mounting substrate; the adjusting bolt passes through the cover plate, and its free end is pressed against the upper plane of the adjusting block; the leveling rollers are fixed on the adjusting blocks one by one, and follow the adjusting blocks to perform synchronous displacement movement; the adjacent leveling rollers are staggered in the up and down directions to jointly form a shaping channel for the terminal strip to flow.

8. The connector terminal cutting machine according to claim 7, characterized in that: The cam is provided with a plurality of guide wheels, each of which is provided with a plurality of guide wheels, each of which is provided with a plurality of guide wheels, each of which is provided with a plurality of guide wheels, each of which is provided with a plurality of guide wheels. The adjusting screw is screwed and passes through the cross beam, and its lower end is fixed to the sliding block; when the adjusting screw is rotated, the sliding block and the guide wheel are dragged to perform a displacement movement toward / away from the horizontal guide plate.

9. The connector terminal cutting machine according to claim 1, characterized in that: The cutting mechanism also includes a roller; the roller is detachably fixed to the forward extension section, and correspondingly, a force transmission groove is provided on the upper cutting knife assembly; the roller is built into the force transmission groove; when the force transmission lever swings, the roller rolls freely along the force transmission groove.

10. The connector terminal cutting machine according to claim 1, characterized in that: The material belt guide comprises a guide body and an arc-shaped material guide plate; the material trough is opened on the guide body; the arc-shaped material guide plate is arranged on the left side of the guide body and is connected to the guide body; the arc-shaped material guide plate is directly opposite to the material trough.

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