Sole pressing assembly line for shoemaking and sole pressing method

[0037] In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the following embodiments are given and described in detail in conjunction with the accompanying drawings.

[0038] like Figure 1-13 As shown, this embodiment provides a shoe bottom pressing line, including an electric control system, a bottom pressing unit 100, a feeding unit 200 adjacent to the input end of the bottom pressing unit 100 for inputting processed objects, and a bottom pressing unit adjacent to the bottom pressing unit 200. The output end of the unit 100 is a blanking unit 300 for outputting the processed product after the bottom pressing operation is completed. The feeding unit 200 and the bottom pressing unit 100 are both electrically connected to the electronic control system. The blanking unit 300 is based on actual It is required to choose whether it is electrically connected to the electronic control system. The electronic control system is controlled by PLC, specifically Taiwan Yonghong FBS-20MAT2-AC.

[0039] In this embodiment, the bottom pressing unit 100 includes a bottom pressing conveyor 101 for conveying the processed objects to the working position, a side pressing mechanism 102 arranged on the left and right sides of the bottom pressing conveyor 101, and a bottom pressing mechanism 102 arranged on the bottom pressing conveyor. The installation frame above 101, the lifting cylinder 103 installed on the top of the installation frame, the installation plate 104 driven by the lifting cylinder 103 to slide up and down along the installation frame, the top pressing mechanism 105 installed at the bottom of the installation plate 104, and the sliding installation on the guide inner frame. The front and rear tightening mechanisms 106 below the mounting plate 104, and a pressure-bearing plate is provided below the conveyor belt of the bottom-pressing conveyor 101 and corresponding to the working position.

[0040] In this embodiment, the side pressure mechanism 102 respectively includes a plurality of side pressure components, a side pressure oil cylinder 1021 for driving the side pressure components to move left and right, a top seat 1022 arranged on the top of the side pressure oil cylinder 1021, and a top seat 1022 installed on the side pressure oil cylinder 1021 through an elastic connector 1023. The side pressure rubber plates 1024 on the side pressure components on the front and rear sides are arranged close to the working position. The side pressure rubber block 1025, the side pressure piston rod 1027 is respectively fitted with the side pressure oil cylinder 1021 through the piston sliding seal, the guide rod 1028 is slidably fitted with the top seat 1022 and its inner end is provided with a lock hole matched with the latch 1029 , the side pressure piston rod 1027 and the guide rod 1028 of the same side pressure component are jointly connected to a rubber seat 1026, the side pressure rubber block 1025 is fixedly installed on the side of the rubber seat 1026 facing the working position, and the top seat 1022 corresponds to Each guide rod 1028 is provided with a working jack 10291 at the starting point of its stroke, and a spare jack 10292 is also provided on the top seat 1022 on one side of each working jack 10291. When it is necessary to restrict the extension of a certain side of the glue block 1025, the plug 1029 Insert it into the working jack 10291 and the lock hole on the corresponding guide rod 1028, and insert the latch 1029 into the spare jack 10292 when it is not needed. Hole 10291 is screwed up away from the keyhole.

[0041] In this embodiment, the side pressure rubber block 1025 is driven by the side pressure cylinder 1021 to move toward each other to squeeze the side pressure rubber plate 1024 on the corresponding side. The extrusion force on the sides is uniform to ensure the quality of the side glue. In addition, for some positions on some special shoe models that do not need to be glued or are inconvenient to be pressed, inserting the latch 1029 into the locking hole of the working jack 10291 and the guide rod 1028 can make the corresponding side pressure component at this position. Will not stretch out under pressure.

[0042] The elastic connecting member 1023 includes a tension spring, a first connecting member fixed on the rubber seat 1026 and a second connecting member fixed on the side pressure rubber plate 1024. The first connecting member is preferably a screw, and the first connecting member is preferably a screw. The two connecting pieces are preferably pins or hooks, and the two ends of the tension spring are respectively connected with the first connecting piece and the second connecting piece, so that the side pressure can be realized by the cooperation of the tension spring and the second connecting piece. The quick assembly and quick disassembly of the plate 1024 can ensure that the side pressure rubber plate 1024 will not be detached or deviated from the working position during the assembly and use process.

[0043] In this embodiment, the installation frame includes a guide outer frame fixedly installed with the bottom pressing conveyor 101 and a support plate fixedly installed on the top of the guide outer frame. The lift cylinder 103 is vertically installed on the support plate and its piston The rod passes downward and is fixedly connected to the mounting plate 104. The mounting plate 104 is slidably matched with the guide outer frame. The guide inner frame includes four sliding bars arranged on the front and rear sides of the mounting plate 104. The mechanism 106 is fixedly mounted on the bottom ends of the four sliding rods, the top ends of the sliding rods pass upward through the mounting plate 104 and a locking block 107 is installed at the top of the sliding rods, and the mounting plate 104 is slidably mounted on the sliding rods . In this way, the lifting cylinder 103 can make the mounting plate 104 move up and down along the guide outer frame, and the top pressing mechanism 105 can be moved up and down synchronously when the mounting plate 104 is lifted up and down. Lifting occurs only when the hold function is in effect. In addition, the sliding rod jacket at the bottom of the locking block 107 is provided with a shock-absorbing sleeve (not shown in the figure). The shock-absorbing sleeve is made of rubber-plastic foam material, which can buffer the mounting plate 104 and the The impact force of the locking block 107 can be adjusted, and the height of the shock absorber can be adjusted according to the requirements to match different third stroke requirements.

[0044] The front and rear tightening mechanism 106 of this embodiment includes a working frame 1061 and a tightening cylinder 1062 extending front and rear on the top surface of the working frame 1061. The four corners of the working frame 1061 are fixedly mounted on the bottom end of the guide inner frame and the working frame 1061 The two opposite inner sidewalls are respectively provided with rails extending front and rear, the front and rear ends of the two rails are respectively slidingly fitted with a front sliding plate 1063 and a rear sliding plate 1064, and the cylinder body of the tightening oil cylinder 1062 is fixed with the rear sliding plate 1064. Connecting, the piston rod of the tightening oil cylinder 1062 is fixedly connected with the front sliding plate 1063 , and a tension spring 1065 is connected between the rear sliding plate 1064 and the rear end of the working frame 1061 . A front toe block 1066 is installed at the bottom of the front slide plate 1063. The front toe block 1066 is composed of a U-shaped bundle body and a guide piece sealed at the lower opening of the U-shaped bundle body. The guide piece is arranged in a high front and a low back. The guide piece can be smoothly inserted from the bottom of the toe cap and maintain a high pressing force on the toe cap during pressing, thereby enhancing the quality of the glue at the toe cap. A rear toe block 1067 is installed at the bottom of the rear slide plate 1064. The rear toe block 1067 has a U-shaped structure with upper and lower openings and an open front end, and will not interfere with the workpiece when the rear toe block 1067 is pulled up.

[0045] The top of the lateral pressure mechanism 102 is provided with positioning pins, and the bottom of the working frame 1061 is provided with positioning holes corresponding to the positions of the positioning pins. The working frame 1061 is supported by the side pressing mechanism 102 and no longer moves downward, and the positioning pin is inserted into the positioning hole. At this time, the pressing mechanism 105 and the workpiece still maintain some distance without contact.

[0046] In this embodiment, the top pressing mechanism 105 includes a front pressing rod group, a rear pressing rod group and a mounting seat 31, the mounting seat 31 is fixedly arranged at the bottom of the mounting plate 104, the front pressing rod group and the rear pressing rod The groups are respectively mounted on the mounts 31 . The front pressure rod set includes a front cylinder 11 filled with liquid, a front pressure rod 12 that is slidingly fitted inside the front cylinder 11 through a piston and protrudes downward, and a toe pressure block 13 installed at the bottom of the front pressure rod 12. , the rear pressure rod group includes a rear cylinder body 21 filled with liquid, a rear pressure rod 22 that is slidingly fitted inside the rear cylinder body 21 through a piston and protrudes downward, and a heel pressure block installed at the bottom of the rear pressure rod 22 25. The front cylinder block 11 and the rear cylinder block 21 are connected together by the oil pipe 32, so that the front cylinder block 11 and the rear cylinder block 21 form a balance cylinder. The liquid in the rear cylinder block 21 flows to the front cylinder block 11 through the oil pipe 32, and finally the front and rear pressures are balanced.

[0047] In addition, tower springs 33 are respectively abutted between the top of the front pressure rod group and the bottom of the mounting seat 31 , and between the top of the rear pressure rod group and the bottom of the mounting seat 31 , the front cylinder block 11 and the rear cylinder block 21 . The cylinders are respectively slidably fitted in the corresponding cylinders, and the cylinders are respectively connected with the mounting base 31 through the mounting blocks 34 on the left and right sides, one mounting block 34 on the front pressure rod group and one on the rear pressure rod group. Micro switches 94 electrically connected to the electronic control system are respectively installed on the mounting blocks 34 . The front cylinder block 11 and the rear cylinder block 21 are respectively provided with trigger rods 35 at the positions corresponding to the micro switches 94 . The position corresponding to the trigger rod 35 is provided with a strip hole for the trigger rod 35 to move up and down, so that after the internal oil pressure of the front cylinder 11 and the rear cylinder 21 reaches a balance, the lifting cylinder 103 continues to press down, which will cause the front pressure rod group and the rear The pressure rod group will rise based on the reaction force of the workpiece; the current pressure rod group and the rear pressure rod group will rise up due to the reaction force and act on the micro switch 94, the piston rod of the lifting cylinder 103 will remain stationary again, and then due to the triggering The rod 35 works against the micro switch 94, and when the piston rod of the lift cylinder 103 is pressed down again, it will drive the entire mounting plate 104, the front pressure rod 12 and the rear pressure rod 22 to press and squeeze the toe and heel of the workpiece, and The tower spring 33 will not be further compressed, and the service life of the tower spring 33 can be guaranteed.

[0048]In order to facilitate the adjustment of the relative distance between the front pressure rod group and the rear pressure rod group according to the size of the workpiece, slide rails are respectively provided on the left and right sides of the mounting seat 31 , and the mounting block 34 is slidably fitted to the mounting seat 31 . The sliding rails are fastened by fastening nails, and the installation positions of the front pressure rod group and the rear pressure rod group can be adjusted in translation by adjusting the position of the installation block 34 .

[0049] In order to facilitate the adjustment of the length of the rear pressure rod according to the rear height of different workpieces, thereby increasing the applicable range of the workpiece, the bottom of the rear pressure rod 22 in this embodiment is axially fixed and circumferentially rotatable. The rotating sleeve 23 has internal threads and is threaded with an adjusting rod 24. The heel pressing block 25 is installed at the bottom of the adjusting rod 24. By rotating the rotating sleeve 23, the heel pressing block 25 and the adjusting rod 24 can be driven upward or downward. down.

[0050] In this embodiment, the feeding unit 200 includes a feeding conveyor 201 and a correction conveyor 202. The input end of the correction conveyor 202 is connected to the output end of the feeding conveyor 201, and the correction conveyor 202 has an output end. The output end is connected to the input end of the bottom pressing conveyor 101 , and the output side of the correction conveyor 202 is provided with a correction mechanism 203 . In this embodiment, the object to be bottomed is placed on the feeding conveyor 201, and the processed object is conveyed backward along the feeding conveyor 201 in the basic posture of the toe in front and the heel behind, and then passes on the correction conveyor 202. The correction mechanism 203 corrects the unified standard posture, that is, the front and rear axes of the workpiece are parallel to the conveying direction.

[0051] Specifically: the correction mechanism 203 in this embodiment includes two correction cylinders symmetrically arranged on the left and right sides of the conveying surface of the correction conveyor 202 and correction plates respectively installed on the piston rods of the correction cylinders on the corresponding sides. The space between the two correction plates is the correction space.

[0052] The correcting oil cylinders, the side pressure oil cylinders 1021 , the tightening oil cylinders 1062 , and the lifting oil cylinders 103 are respectively connected to the hydraulic system, which are in the prior art and will not be repeated here.

[0053] Further, in order to realize automatic detection and complete the correction action, in this embodiment, a first induction switch (not shown in the figure) electrically connected to the electronic control system is installed on the correction conveyor 202 behind the correction mechanism 203, The specific first inductive switch can be BEN5M-MFR. When the rear end of the workpiece travels to the sensing range of the first induction switch and is sensed, the electronic control system controls the two correction cylinders to move synchronously towards each other, so as to clamp the workpiece and make the workpiece present a unified standard posture. Correction board reset.

[0054] In order to realize automatic detection and convey the processed objects to the designated position, in this embodiment, a second induction switch (not shown in the figure) is installed at the input end of the bottom pressing conveyor 101. The specific second induction switch can be BEN5M. -MFR, the second induction switch is electrically connected to the electric control system, when the rear end of the workpiece travels to the induction range of the second induction switch and is sensed, the electric control system controls the driving motor of the bottom pressing conveyor 101 It runs for a predetermined time at the set speed, that is, the distance from the induction to the backward conveyance can be set uniformly, regardless of the size of the processed object. In addition, the second inductive switch in this embodiment can also be used to detect whether there is an object at the input end of the bottom pressing conveyor 101, so as to avoid danger after the front and rear tightening mechanisms 106 are pressed down, and improve the safety in use.

[0055] In order to realize the automatic detection of the front and rear tightening mechanisms 106 falling in place, in this embodiment, a first travel switch (not shown in the figure) that acts on the front and rear tightening mechanisms 106 is installed on one side of the side pressure mechanism 102 . The first travel switch can be Changde TZ-8108. The first travel switch is electrically connected to the electronic control system. When the working frame 1061 triggers the first travel switch, the piston rod of the lifting cylinder 103 remains stationary.

[0056] In order to realize the automatic induction of the mounting plate 104 rising into place, in this embodiment, a second travel switch (not shown in the figure) that is electrically connected to the electronic control system is installed on the top of the mounting plate 104. The specific second travel switch can be For Changde TZ-8108, when the mounting plate 104 is driven up by the lift cylinder 103 and triggers the second stroke switch, the mounting plate 104 will remain stationary, indicating that the reset is completed and waiting for the next cycle of work.

[0057] In order to automatically sense whether there is an object on the output side of the bottom pressing conveyor 101, in this embodiment, a third sensing switch 96 may be provided on the bottom pressing conveyor 101 directly below the rear end of the front and rear tightening mechanisms 106. Cohen KS20-20-A can be used for the three induction switches 96. The third induction switch 96 is electrically connected to the electronic control system. When there is an object there, the lifting cylinder 103 does not act, and the correction conveyor 202 does not act.

[0058] The working process of the bottom pressing pipeline in this embodiment is:

[0059] 1. The processed object is conveyed along the feeding conveyor 201 to the correction conveyor 202, and the processed object is in a standard posture through the correction mechanism 203, that is, the toe is in the front and the heel is behind, and the front and rear axes of the processed object are parallel to the transmission direction. ; This article defines that along the conveying direction of the processed object, the side close to the feeding is forward, and the side close to the unloading is backward.

[0060] 2. Correct the operation of the conveyor 202 and the bottom pressing conveyor 101, and send the workpiece to the working position. The working position in this embodiment is that the workpiece is pressed by the side pressing mechanism 102, the top pressing mechanism 105 and the front and rear tightening mechanism 106. position on the conveying surface of the combined bottom pressing conveyor 101;

[0061] 3. After reaching the working position, the lifting cylinder 103 moves down to complete the first stroke, so that the front and rear tightening mechanisms 106 and the top pressing mechanism 105 move down, and the front and rear tightening mechanisms 106 are supported on the side pressing mechanism 102. Stop when the pressure is maintained , at this time, there is a distance between the top pressing mechanism 105 and the processed object, and the processed object is between the front toe block 1066 and the rear toe block 1067 and a distance is left;

[0062] 4. Activate the tightening oil cylinder 1062, so that the front toe block 1066 pushes the workpiece backward to the rear toe block 1067, and the pressure is maintained;

[0063] 5. The lifting cylinder 103 moves down again to complete the second stroke, so that the toe pressure block 13 is pressed against the toe cap, the heel pressure block 25 is pressed against the back heel, and the front and rear pressures are balanced, and the front pressure rod group and the back pressure The rod group is raised by the reaction force of the processed object, and the pressure is maintained;

[0064] 6. After rising to the right position, the tightening oil cylinder 1062 is actuated again, so that the front toe block 1066 and the rear toe block 1067 move toward each other to clamp the front and rear ends of the workpiece to maintain pressure;

[0065] 7. The side pressure cylinder 1021 moves, so that the two side pressure rubber plates 1024 move toward each other to squeeze the left and right sides of the workpiece to maintain the pressure;

[0066] 8. The lifting oil cylinder 103 moves down again to complete the third stroke, so that both the mounting plate 104 and the top pressing mechanism 105 move down a certain distance, and at the same time, the front pressure rod group and the rear pressure rod group increase the pressure to squeeze the processed object and maintain the pressure;

[0067] 9. When the pressure holding time expires, the side pressure cylinder 1021 is reset, the tightening cylinder 1062 is reset, and then the lifting cylinder 103 is pulled up and reset, driving the top pressure mechanism 105, the front and rear tightening mechanisms 106 and the mounting plate 104 to rise, and stop after rising to the right position. ;

[0068] 10. Then, the bottom pressing conveyor 101 runs to send out the processed object, and the correction conveyor 202 sends the next processed object in.

[0069] If automatic control is adopted, in step S1, after the heel of the workpiece is detected by the first induction switch, the correction is triggered, and the correction mechanism 203 is loosened and the operation of the conveyor 202 is corrected through the timing control; in step S2, the second induction switch is used It is detected that the processed object is transported backwards and the bottom pressing conveyor 101 is stopped by timing control; in step S3, the timing control lifting cylinder 103 is used to start pressing the first stroke and output the stop signal of the end of the first stroke through the first stroke switch; In step S4, the timing control is used to control the tightening cylinder 1062 to start and complete the first action; in step S5, the timing control is used to control the lifting cylinder 103 to start pressing the second stroke, and the stop signal at the end of the second stroke is output through the micro switch 94. In step S6, utilize time sequence control to tighten oil cylinder 1062 to start and complete the second action; Utilize time sequence control side pressure oil cylinder 1021 to start and complete the action in step S7; Utilize time sequence control to lift oil cylinder 103 to start and complete the first step in step S8 Three strokes; in step S9, the lifting cylinder 103 starts to rise through the timing control and a stop signal for resetting the end point is output through the second stroke switch; in step S10, the bottom pressing conveyor 101 is restarted by timing control.

[0070] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments, and the descriptions in the above-mentioned embodiments and the description are only to illustrate the present invention. On the premise of not departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and these changes and improvements all fall within the scope of the claimed invention, and the claimed scope of the present invention is determined by the appended defined by the claims and their equivalents.