Sole pressing line and sole pressing method for shoe making

Abstract

The present invention relates to a sole pressing production line for shoe manufacturing, comprising an electric control system, a sole pressing unit and a feeding unit, wherein the feeding unit has a correction mechanism for correcting the posture and position of the workpiece; the sole pressing unit comprises a sole pressing conveyor for conveying the workpiece to a working position, a side pressing mechanism arranged on the left and right sides of the sole pressing conveyor, a mounting frame arranged above the sole pressing conveyor, a lifting cylinder installed on the top of the mounting frame, a mounting plate driven by the lifting cylinder to slide up and down along the mounting frame, a top pressing mechanism installed at the bottom of the mounting plate, and a front and rear tightening mechanism installed below the mounting plate through a guide inner frame. The present invention can safely deliver the workpiece to the working position in a standard posture through the feeding conveyor, the correction conveyor, the sole pressing conveyor and the correction mechanism, complete the uniform pressing of the left and right sides through the side pressing mechanism, achieve the uniform pressing of the front and rear sides through the front and rear tightening mechanism, and achieve the uniform pressing of the entire bonding surface through the top pressing mechanism.

Description

Technical Field

[0001] The invention belongs to the technical field of shoe-making equipment, and in particular relates to a sole pressing production line and a sole pressing method for shoe-making. Background Art

[0002] As is known, the shoe pressing machine mainly includes a frame, a workbench that can be lifted and moved on the frame, a main oil cylinder connected to drive the lifting and lowering of the workbench, a pressure rod mechanism arranged above the workbench, front and rear tightening mechanisms and left and right edge pressing mechanisms arranged on the workbench, the front tightening mechanism includes a slide that can be moved forward and backward on the workbench, a front pressure block arranged on the slide, and a front tightening oil cylinder arranged on the workbench and connected to drive the slide to move forward and backward, the rear tightening mechanism includes a rear tightening oil cylinder arranged on the workbench, and a rear pressure block arranged on the piston rod of the rear tightening oil cylinder, and the left and right edge pressing mechanisms each include a plurality of side pressure blocks and a side pressure oil cylinder that drives the side pressure blocks to move left and right. When working, the shoe last is inserted into the shoe and placed between the front and rear pressure blocks and the side pressure blocks, and the main oil cylinder drives the workbench to rise, so that the pressure rod mechanism presses the shoe from above, and the front, rear pressure blocks and side pressure blocks press the shoe body around. The pressure rod mechanism has front and rear pressure rods that can swing left and right between the standby position and the working position.

[0003] However, this shoe pressing machine has the following defects: 1. Since the side pressing is performed by a plurality of side pressing blocks to press the sole, and there are gaps between the plurality of side pressing blocks, the sole position corresponding to the gap cannot be effectively pressed, and the quality of side glue pressing needs to be improved. In addition, the side glue pressing blocks at certain positions cannot be adjusted or limited according to the actual shoe shape; 2. The sole is manually placed in the bottom pressing working position, which on the one hand has hidden operational safety hazards, and on the other hand requires more manual intervention, has greater strength and low production efficiency; 3. The pressing rod mechanism can swing, and there are standby positions and working positions. When pressing, the oil cylinder needs to be upward, and the quality of glue pressing needs to be improved; 4. The front and rear pressing blocks are generally U-shaped structures and hollowed out at the bottom, so that the front pressing block has insufficient squeezing and pressing effect on the toe, especially for the sole with the sole head tilted up; 5. The existing front and rear tightening mechanism needs to be provided with a rear oil cylinder for driving the rear pressing block to move and a front oil cylinder for driving the front pressing block to move, which on the one hand easily leads to uneven front and rear pressures, and on the other hand the manufacturing cost is also high, and it is not suitable for assembly line operation. Summary of the invention

[0004] In view of the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a sole pressing assembly line for shoe manufacturing, which can realize assembly line operation.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A sole pressing production line for shoemaking comprises an electric control system, a sole pressing unit and a loading unit for conveying workpieces adjacent to the input end of the sole pressing unit, wherein the loading unit and the sole pressing unit are both electrically connected to the electric control system, and the loading unit has a correction mechanism for correcting the posture and position of the workpieces; the sole pressing unit comprises a sole pressing conveyor for conveying the workpieces to a working position, a side pressing mechanism arranged on the left and right sides of the sole pressing conveyor, a mounting frame arranged above the sole pressing conveyor, a lifting cylinder installed on the top of the mounting frame, a mounting plate driven by the lifting cylinder to slide up and down along the mounting frame, a top pressing mechanism installed at the bottom of the mounting plate, and a front and rear tightening mechanism installed below the mounting plate by sliding through a guide inner frame.

[0007] Preferably, the feeding unit includes a feeding conveyor and a correction conveyor, the correction mechanism is arranged on the output side of the correction conveyor, the input end of the correction conveyor is connected to the output end of the feeding conveyor, and the output end of the correction conveyor is connected to the input end of the bottom pressing conveyor.

[0008] Preferably, the side pressure mechanism comprises a plurality of side pressure components, a side pressure cylinder for driving the side pressure component to move left and right, a top seat arranged on the top of the side pressure cylinder, and a side pressure rubber plate installed on the side pressure components on the front and rear sides through elastic connecting parts. Each side pressure component comprises a side pressure piston rod, a guide rod, a latch, a rubber seat and a side pressure rubber block. The side pressure piston rod is respectively fitted with the side pressure cylinder through a piston sliding seal. The guide rod is slidably fitted with the top seat and a locking hole matching the latch is provided at the inner end thereof. The side pressure piston rod and guide rod of the same side pressure component are connected to a rubber seat together. The side pressure rubber block is fixedly installed on the side of the rubber seat facing the working position, and the top seat is respectively provided with working sockets at the starting point of the stroke of each guide rod.

[0009] Preferably, the pressing mechanism comprises a front pressure rod group, a rear pressure rod group and a mounting seat, the mounting seat is fixedly arranged at the bottom of the mounting plate, the front pressure rod group comprises a front cylinder body filled with liquid, a front pressure rod that is slidably fitted in the front cylinder body and extends downwardly through a piston, and a toe pressure block installed at the bottom of the front pressure rod, the rear pressure rod group comprises a rear cylinder body filled with liquid, a rear pressure rod that is slidably fitted in the rear cylinder body and extends downwardly through a piston, and a rear heel pressure block installed at the bottom of the rear pressure rod, the front cylinder body and the rear cylinder body are connected together through an oil pipe; the front pressure rod group and the rear pressure rod group are respectively installed on the mounting plate. Tower springs are respectively abutted on the mounting seat and between the top of the front pressure rod group and the bottom of the mounting seat, and between the top of the rear pressure rod group and the bottom of the mounting seat. The front cylinder body and the rear cylinder body are respectively slidably fitted in the corresponding cylinder barrels, and the cylinder barrels are respectively connected to the mounting seat through the mounting blocks on the left and right sides. A mounting block on the front pressure rod group and a mounting block on the rear pressure rod group are respectively installed with micro switches electrically connected to the electronic control system. Trigger rods are respectively protruding from the front cylinder body and the rear cylinder body at the positions corresponding to the micro switches, and bar holes for the trigger rods to move up and down are provided at the corresponding trigger rod positions of each cylinder barrel.

[0010] Preferably, slide rails are respectively provided on the left and right sides of the mounting seat, and the mounting block is slidably fitted on the slide rails of the mounting seat and is locked by fastening nails.

[0011] Preferably, the bottom of the rear pressure rod is axially fixed and circumferentially rotatably covered with a rotating sleeve, the rotating sleeve has an internal thread and is threadedly fitted with an adjusting rod, and the rear heel pressure block is installed at the bottom of the adjusting rod.

[0012] Preferably, the front and rear tightening mechanisms include a working frame, a tightening cylinder extending front and rearwards and arranged on the top surface of the working frame, the four corners of the working frame are fixedly mounted on the bottom end of the guide inner frame and the two opposing inner side walls of the working frame are respectively provided with tracks extending front and rearwards, the front and rear ends of the two tracks are respectively slidably matched with a front skateboard and a rear skateboard, a front bead block is installed at the bottom of the front skateboard, and a rear bead block is installed at the bottom of the rear skateboard, the cylinder body of the tightening cylinder is fixedly connected to the rear skateboard, the piston rod of the tightening cylinder is fixedly connected to the front skateboard, and a tension spring is connected between the rear skateboard and the rear end of the working frame; the front bead block is composed of a U-shaped beam body and a guide piece sealed and connected to the lower opening of the U-shaped beam body, the guide piece is arranged to be higher in the front and lower in the rear; the rear bead block is a U-shaped structure with upper and lower openings and a front end opening.

[0013] Preferably, a first induction switch is installed at the rear of the correction mechanism, a second induction switch is installed at the input end of the bottom pressure conveyor, a first travel switch that acts with the front and rear tightening mechanisms is installed on one side of the side pressure mechanism, and a second travel switch is installed on the top of the mounting plate. The first induction switch, the second induction switch, and the third induction switch are electrically connected to the electronic control system.

[0014] Preferably, a third induction switch is provided on the bottom pressing conveyor directly below the rear end of the front and rear tightening mechanisms.

[0015] The present invention also provides a sole pressing method using a sole pressing assembly line for shoe manufacturing, which specifically comprises the following steps:

[0016] S1. The workpiece is transported backward along the loading unit, and the correction mechanism makes the workpiece present a standard posture, that is, the toe is in front and the heel is in the back, and the front and rear axes of the workpiece are parallel to the transmission direction; S2. The correction conveyor and the bottom pressing conveyor are running to send the workpiece to the working position; S3. After arriving at the working position, the lifting cylinder moves downward to complete the first stroke, so that the front and rear tightening mechanisms and the top pressing mechanism move downward, and the front and rear tightening mechanisms stop when they are supported on the side pressing mechanism, and the pressure is maintained. At this time, there is a distance between the top pressing mechanism and the workpiece, and the workpiece is between the front and rear tightening mechanisms and there is a distance; S4. The front and rear tightening mechanisms are actuated, so that the workpiece is pressed against the front and rear tightening blocks of the front and rear tightening mechanisms, and the pressure is maintained; S5. The lifting cylinder moves downward again to complete the second stroke, so that the toe pressing block presses against the toe and heel The pressure block is pressed against the rear heel, and the front and rear pressures are balanced. The top pressure mechanism rises due to the reaction force of the workpiece to maintain pressure; S6, after rising into place, the front and rear tightening mechanisms act again to clamp the front and rear ends of the workpiece to maintain pressure; S7, the side pressure mechanism acts to squeeze the left and right sides of the workpiece to maintain pressure; S8, the lifting cylinder acts again to press down to complete the third stroke, so that the mounting plate and the top pressure mechanism both move down a distance, and at the same time the top pressure mechanism increases the pressure to squeeze the workpiece to maintain pressure; S9, when the pressure holding time is up, the side pressure mechanism resets, the front and rear tightening mechanisms reset, and then the lifting cylinder pulls up and resets, driving the top pressure mechanism, the front and rear tightening mechanisms and the mounting plate to rise, and stops after rising into place; S10, then, the bottom pressure conveyor runs to send out the processed workpiece, and the loading unit sends the next workpiece in.

[0017] 1. The bottom pressing unit of the present invention includes a bottom pressing conveyor line, and a feeding unit is connected to the input end of the bottom pressing conveyor line. The feeding unit includes a feeding conveyor, a correction conveyor and a correction mechanism. The processing object can be safely delivered to the working position through the feeding conveyor, the correction conveyor and the bottom pressing conveyor. The processing object can enter the working position in a standard posture through the correction mechanism to ensure the smoothness of the operation.

[0018] 2. The present invention presses the sole through a side pressure mechanism, a top pressure mechanism and a front and rear tightening mechanism. The side pressure mechanism is used to achieve uniform pressing of the left and right sides, the front and rear tightening mechanism is used to achieve uniform pressing of the front and rear sides, and the top pressure mechanism is used to achieve uniform pressing of the entire bonding surface.

[0019] 3. The side pressure mechanism of the present invention adds a side pressure rubber plate on the basis of the original side pressure rubber blocks, which are connected together by elastic connectors. On the one hand, it can ensure that the extrusion force on both sides of the workpiece is uniform, improving the quality of side pressure glue. On the other hand, the side pressure rubber plate can be quickly disassembled and installed through the movable lock buckle, and the side pressure rubber plate will not be separated from or deviate from the working position during use, ensuring the smoothness of the operation. At the same time, by inserting the pin into the working socket and the lock hole at the inner end of the guide rod, the guide rod, side pressure piston rod, rubber seat and side pressure rubber block at certain positions will not be pressed and stretched out, which is suitable for special shoe types.

[0020] 4. The front and rear tightening mechanisms of the present invention include a tightening cylinder and a front bundle block. The tightening cylinder is connected to the working frame through a tension spring. The front bundle block has a guide piece that is higher in the front and lower in the back. Through the guide piece, it can be smoothly inserted from the bottom of the toe and maintain a high pressing force on the toe during pressing, thereby enhancing the quality of glue pressing at the toe. In addition, when the front and back of the workpiece are both attached to the front bundle block and the rear bundle block, the tightening cylinder will be pressurized to simultaneously drive the tension spring to stretch and the rear bundle block to squeeze the rear side of the workpiece, thereby achieving uniform front and rear pressing. After the pressing work is completed, the tightening cylinder is depressurized and the restoring force of the tension spring is used to pull the rear slide plate and the rear bundle block backwards. In this way, the workpiece will not be interfered with during the upward pulling of the rear bundle block, thereby ensuring the smooth delivery of the workpiece and the bottom pressing operation of the next workpiece.

[0021] 5. The pressing mechanism of the present invention is installed at the bottom of the mounting plate, and the front and rear tightening mechanisms are connected to the mounting plate through the guide inner frame, and the mounting plate is driven up and down by the lifting cylinder. When the lifting cylinder presses down for the first stroke, the working frame of the front and rear tightening mechanisms is supported on the side pressing mechanism, and when the lifting cylinder presses down for the second stroke, since the front pressure rod group and the rear pressure rod group are respectively provided with tower springs between the mounting seat and the two are connected to each other through the oil pipe, the pressing mechanism will continue to press down and make the toe pressure block and the heel pressure block press against the workpiece, and at the same time, the balancing effect of the front pressure rod group and the rear pressure rod group is used to achieve the balance of the downward pressure of the front and rear pressure rods, and then when the lifting cylinder presses down for the third stroke, the mounting plate and the pressing mechanism will continue to press down due to the sliding cooperation between the guide inner frame and the mounting plate, so as to achieve a greater pressure pressing, thereby greatly enhancing the bottom pressing quality and extending the service life of the pressing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a top view of the bottom pressing production line of the present invention.

[0023] Figure 2 The bottom pressing unit and the correction mechanism structure of the present invention are schematically shown. Figure 1 .

[0024] Figure 3 The bottom pressing unit and the correction mechanism structure of the present invention are schematically shown. Figure 2 .

[0025] Figure 4 for Figure 3 A is a partial enlarged view shown in FIG.

[0026] Figure 5 The assembly diagram of the top pressing mechanism and the front and rear tightening mechanism in the bottom pressing unit of the present invention is shown in FIG. Figure 1 .

[0027] Figure 6 The assembly diagram of the top pressing mechanism and the front and rear tightening mechanism in the bottom pressing unit of the present invention is shown in FIG. Figure 2 .

[0028] Figure 7 The assembly diagram of the top pressing mechanism and the front and rear tightening mechanism in the bottom pressing unit of the present invention is shown in FIG. Figure 3 .

[0029] Figure 8 for Figure 7 B is a partial enlarged view shown in FIG.

[0030] Fig. 9 It is a schematic diagram of the structure of the top pressing mechanism of the present invention.

[0031] Fig.10 It is a schematic diagram of the installation of the tower spring in the top pressing mechanism of the present invention.

[0032] Fig.11 It is a schematic diagram of the structure of the front and rear tightening mechanism of the present invention.

[0033] Fig.12 It is a schematic diagram of the structure of the side pressure mechanism of the present invention.

[0034] Fig.13 It is a schematic diagram of the installation structure of the side pressure assembly of the present invention.

[0035] Markings in the figure: 100, bottom pressing unit; 200, feeding unit; 201, feeding conveyor; 202, correction conveyor; 203, correction mechanism; 300, unloading unit; 101, bottom pressing conveyor; 102, side pressing mechanism; 103, lifting cylinder; 104, mounting plate; 105, top pressing mechanism; 106, front and rear tightening mechanism; 107, locking block; 1021, side pressing cylinder; 1022, top seat; 1023, elastic connector 1024, side pressing rubber plate; 1025, side pressing rubber block; 1026, rubber seat; 1027, side pressing piston rod; 1028, guide rod; 1 029, latch; 10291, working socket; 10292, spare socket; 1061, working frame; 1062, tightening cylinder; 1063, front slide plate; 1064, rear slide plate; 1065, tension spring; 1066, front toe block; 1067, rear toe block; 11, front cylinder body; 12, front pressure rod; 13, toe pressure block; 21, rear cylinder body; 22, rear pressure rod; 23, rotating sleeve; 24, adjusting rod; 25, rear heel pressure block; 31, mounting seat; 32, oil pipe; 33, tower spring; 34, mounting block; 35, trigger rod; 94, micro switch; 96, third induction switch. DETAILED DESCRIPTION

[0036] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0037] like Figure 1-13 As shown, the present embodiment provides a sole pressing assembly line for shoe manufacturing, including an electronic control system, a sole pressing unit 100, a loading unit 200 adjacent to the input end of the sole pressing unit 100 for inputting workpieces, and an unloading unit 300 adjacent to the output end of the sole pressing unit 100 for outputting workpieces after the sole pressing operation is completed. The loading unit 200 and the sole pressing unit 100 are both electrically connected to the electronic control system, and the unloading unit 300 chooses whether to be electrically connected to the electronic control system according to actual needs. The electronic control system is controlled by PLC.

[0038] In this embodiment, the bottom pressing unit 100 includes a bottom pressing conveyor 101 for conveying the processed object to the working position, a side pressing mechanism 102 arranged on the left and right sides of the bottom pressing conveyor 101, a mounting frame arranged above the bottom pressing conveyor 101, a lifting cylinder 103 installed on the top of the mounting frame, a mounting plate 104 driven by the lifting cylinder 103 to slide up and down along the mounting frame, a top pressing mechanism 105 installed at the bottom of the mounting plate 104, and a front and rear tightening mechanism 106 installed below the mounting plate 104 through a guide inner frame sliding. A pressure plate is provided below the conveyor belt of the bottom pressing conveyor 101 and corresponding to the working position.

[0039] In this embodiment, the side pressure mechanism 102 includes a plurality of side pressure components, a side pressure cylinder 1021 for driving the side pressure component to move left and right, a top seat 1022 arranged on the top of the side pressure cylinder 1021, and a side pressure rubber plate 1024 installed on the side pressure components on the front and rear sides through an elastic connecting member 1023. The side pressure rubber plate 1024 is arranged close to the working position. Each side pressure component includes a side pressure piston rod 1027, a guide rod 1028, a latch 1029, a rubber seat 1026 and a side pressure rubber block 1025. The side pressure piston rod 1027 is respectively matched with the side pressure cylinder 1021 through a piston sliding seal. The guide rod 1028 is slidably matched with the top seat 1022 and its inner end is provided with a lock hole matched with the latch 1029. The same side pressure component The side pressure piston rod 1027 and the guide rod 1028 are connected to a rubber seat 1026 together, and 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 is respectively provided with a working socket 10291 at the starting point of the stroke of each guide rod 1028, and a spare socket 10292 is also provided on the top seat 1022 on one side of each working socket 10291. When it is necessary to limit the extension of a side pressure rubber block 1025, the pin 1029 is inserted into the working socket 10291 and the corresponding lock hole on the guide rod 1028, and when it is not needed, the pin 1029 is inserted into the spare socket 10292. Of course, the pin 1029 can also be placed in a designated storage position or rotated upward from the lock hole in the working socket 10291.

[0040] In this embodiment, the side pressure oil cylinder 1021 drives the side pressure rubber block 1025 to move toward each other to squeeze the side pressure rubber plate 1024 on the corresponding side, and then the side pressure rubber plate 1024 uniformly squeezes the left and right sides of the workpiece, so that the extrusion force on both sides of the workpiece is uniform, ensuring the quality of the side pressure glue. In addition, for some special shoe shapes where there is no need for pressure glue or it is inconvenient to press, the latch 1029 is inserted into the lock hole of the working socket 10291 and the guide rod 1028, so that the side pressure component corresponding to the position will not be pressed and extended.

[0041] The elastic connecting member 1023 includes a tension spring and 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 second connecting member is preferably a pin or a hook, etc. The two ends of the tension spring are respectively connected to the first connecting member and the second connecting member. In this way, the side pressure rubber plate 1024 can be quickly installed and removed through the cooperation of the tension spring and the second connecting member. At the same time, during the assembly and use process, it can be ensured that the side pressure rubber plate 1024 will not detach or deviate from the working position.

[0042] In this embodiment, the mounting frame includes a guide outer frame fixedly mounted on the bottom conveyor 101 and a support plate fixedly mounted on the top of the guide outer frame, the lifting cylinder 103 is vertically mounted on the support plate and its piston rod is downwardly passed through and 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 slide bars arranged on the front and rear sides of the mounting plate 104, the front and rear tightening mechanisms 106 are fixedly mounted at the bottom ends of the four slide bars, the top ends of the slide bars pass through the mounting plate 104 upwards and a locking block 107 is installed at the top ends of the slide bars, and the mounting plate 104 is slidably mounted on the slide bars. In this way, the mounting plate 104 can be lifted up and down along the guide outer frame by the lifting cylinder 103, and the top pressing mechanism 105 can be synchronously driven to lift up and down during the process of lifting up and down of the mounting plate 104, and the front and rear tightening mechanisms 106 will only be lifted up and down when the mounting plate 104 and the locking block 107 remain in effect. In addition, a shock-absorbing sleeve (not shown in the figure) is mounted on the sliding rod at the bottom of the locking block 107. The shock-absorbing sleeve is made of rubber-plastic foam material and can buffer the impact force of the mounting plate 104 and the locking block 107 during the upward pulling process of the lifting cylinder 103. The height of the shock-absorbing sleeve can be adjusted as needed to match different third stroke requirements.

[0043] The front and rear tightening mechanism 106 of this embodiment includes a working frame 1061 and a tightening cylinder 1062 extending forward and backward and arranged 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 two opposing inner side walls of the working frame 1061 are respectively provided with tracks extending forward and backward, the front and rear ends of the two tracks are respectively slidably matched with a front slide 1063 and a rear slide 1064, the cylinder body of the tightening cylinder 1062 is fixedly connected to the rear slide 1064, the piston rod of the tightening cylinder 1062 is fixedly connected to the front slide 1063, and a tension spring 1065 is connected between the rear slide 1064 and the rear end of the working frame 1061. A front beam block 1066 is installed at the bottom of the front slide 1063. The front beam block 1066 consists of a U-shaped beam body and a guide piece sealed and connected to the lower opening of the U-shaped beam body. The guide piece is set high at the front and low at the back. Through the guide piece, it can be smoothly inserted from the bottom of the toe and maintain a high pressing force on the toe during pressing, thereby enhancing the quality of the glue pressing at the toe. A rear beam block 1067 is installed at the bottom of the rear slide 1064. The rear beam block 1067 is a U-shaped structure with upper and lower openings and a front opening. When the rear beam block 1067 is pulled up, it will not interfere with the workpiece.

[0044] The side pressure mechanism 102 is provided with a positioning pin at the top, and the working frame 1061 is provided with a positioning hole at the bottom corresponding to the position of each positioning pin. When the piston rod of the lifting cylinder 103 extends downward for a distance (first stroke), the working frame 1061 is supported by the side pressure mechanism 102 and no longer moves downward, and the positioning pin is inserted into the positioning hole. At this time, the top pressure mechanism 105 still maintains a certain distance from the workpiece without contact.

[0045] In this embodiment, the pressing mechanism 105 includes a front pressure rod group, a rear pressure rod group and a mounting seat 31. The mounting seat 31 is fixedly arranged at the bottom of the mounting plate 104, and the front pressure rod group and the rear pressure rod group are respectively mounted on the mounting seat 31. The front pressure rod group includes a front cylinder body 11 filled with liquid, a front pressure rod 12 that is slidably fitted in the front cylinder body 11 and extends 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 slidably fitted in the rear cylinder body 21 and extends downward, and a rear heel pressure block 25 installed at the bottom of the rear pressure rod 22. The front cylinder body 11 and the rear cylinder body 21 are connected together through an oil pipe 32, so that the front cylinder body 11 and the rear cylinder body 21 constitute a balancing cylinder. When the rear pressure rod 22 acts on the rear heel pressure first, the liquid in the rear cylinder body 21 will flow to the front cylinder body 11 through the oil pipe 32, and finally the front and rear pressures are balanced.

[0046] 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 body 11 and the rear cylinder body 21 are respectively slidably fitted in the corresponding cylinder barrels, and the cylinder barrels are respectively connected to the mounting seat 31 through the mounting blocks 34 on the left and right sides. A micro switch 94 electrically connected to the electronic control system is respectively installed on a mounting block 34 on the front pressure rod group and a mounting block 34 on the rear pressure rod group. The front cylinder body 11 and the rear cylinder body 21 are respectively provided with trigger rods 35 at the positions corresponding to the micro switches 94, and the corresponding trigger rod 35 positions of each cylinder barrel are provided with a trigger rod 35 for the trigger rod 35 to move up and down The movable bar hole is formed, so that when the internal oil pressure of the front cylinder body 11 and the rear cylinder body 21 reaches equilibrium, the lifting cylinder 103 continues to press downward, which will cause the front pressure rod group and the rear pressure rod group to rise based on the reaction force of the workpiece; the front pressure rod group and the rear pressure rod group are lifted up by the reaction force until they interact with the microswitch 94, and the piston rod of the lifting cylinder 103 remains stationary again, and then due to the counteraction of the trigger rod 35 and the microswitch 94, when the piston rod of the lifting 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 the toe and the heel of the workpiece, and will not further compress the tower spring 33, thereby ensuring the service life of the tower spring 33.

[0047] 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 on the slide rails of the mounting seat 31 and locked by fastening pins. The installation position of the front pressure rod group and the rear pressure rod group can be adjusted by translation by adjusting the position of the mounting block 34.

[0048] In order to facilitate the adjustment of the length of the rear pressure rod according to different rear heights of the workpiece, thereby increasing the applicable range of the workpiece, the rear pressure rod 22 of this embodiment is axially fixed at the bottom and circumferentially rotatable with a rotating sleeve 23, the rotating sleeve 23 has an internal thread and is threadedly fitted with an adjusting rod 24, the rear heel pressure block 25 is installed at the bottom of the adjusting rod 24, and the rear heel pressure block 25 and the adjusting rod 24 can be driven upward or downward by rotating the rotating sleeve 23.

[0049] 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, the output end of the correction conveyor 202 is connected to the input end of the bottom pressing conveyor 101, and a correction mechanism 203 is provided on the output side of the correction conveyor 202. In this embodiment, the workpiece to be bottom pressed is placed on the feeding conveyor 201, and the workpiece is conveyed backward along the feeding conveyor 201 in a basic posture with the toe in front and the heel in the back, and then corrected to a uniform standard posture on the correction conveyor 202 by the correction mechanism 203, that is, the front and rear axes of the workpiece are parallel to the transmission direction.

[0050] Specifically: the correction mechanism 203 of 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, and the space between the two correction plates is the correction space.

[0051] Each correction cylinder, the side pressure cylinder 1021, the tightening cylinder 1062, and the lifting cylinder 103 are respectively connected to the hydraulic system, which is the existing technology and will not be described in detail here.

[0052] Furthermore, 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 electric control system is installed on the correction conveyor 202 behind the correction mechanism 203. The specific first induction switch can be BEN5M-MFR. When the rear end of the workpiece moves to the sensing range of the first induction switch and is sensed, the electric control system controls the two correction cylinders to move synchronously towards each other, thereby clamping the workpiece and making the workpiece present a unified standard posture, and the correction plate is reset after correction.

[0053] In order to realize automatic detection and conveying of the processed object to the designated position, a second induction switch (not shown in the figure) is installed at the input end of the bottom conveyor 101 in this embodiment. 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 processed object moves to the sensing range of the second induction switch and is sensed, the electric control system controls the driving motor of the bottom conveyor 101 to run at a set speed for a predetermined time, that is, the distance of the backward conveyance after self-sensing can be uniformly set, regardless of the size of the processed object. After the bottom conveyor 101 is in place, it stops. In addition, the second induction switch of this embodiment can also detect whether there is an object at the input end of the bottom conveyor 101, avoid danger after the front and rear tightening mechanisms 106 are pressed down, and improve safety.

[0054] In order to realize automatic detection of the front and rear tensioning mechanisms 106 being lowered into place, in this embodiment, a first travel switch (not shown in the figure) that acts on the front and rear tensioning mechanisms 106 is installed on one side of the side pressure mechanism 102. The specific 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.

[0055] In order to realize automatic sensing of the mounting plate 104 rising into position, in this embodiment, a second travel switch (not shown in the figure) electrically connected to the electric control system is installed on the top of the mounting plate 104. The specific second travel switch can be Changde TZ-8108. When the mounting plate 104 is driven to rise by the lifting cylinder 103 and the second travel switch is triggered, the mounting plate 104 remains stationary, indicating that the reset is completed and waits for the next cycle of work.

[0056] In order to realize automatic sensing of whether there is an object on the output side of the bottom conveyor 101, the present embodiment may provide a third sensing switch 96 on the bottom conveyor 101 directly below the rear end of the front and rear tightening mechanisms 106. The specific third sensing switch 96 may be Cohen KS20-20-A. The third sensing switch 96 is electrically connected to the electronic control system. When there is an object there, the lifting cylinder 103 does not operate and the correction conveyor 202 does not operate.

[0057] The working process of the bottom pressing assembly line in this embodiment is as follows:

[0058] 1. The workpiece is conveyed along the loading conveyor 201 to the correction conveyor 202, and the workpiece is made to present a standard posture through the correction mechanism 203, that is, the toe is in front and the heel is in the back, and the front and rear axes of the workpiece are parallel to the transmission direction; this article defines that along the conveying direction of the workpiece, the side close to the loading is the forward direction, and the side close to the unloading is the backward direction.

[0059] 2. The correction conveyor 202 and the bottom pressing conveyor 101 are in operation to deliver the workpiece to the working position. The working position in this embodiment is the position of the workpiece on the conveying surface of the bottom pressing conveyor 101 where the workpiece is pressed by the side pressing mechanism 102, the top pressing mechanism 105 and the front and rear tightening mechanisms 106;

[0060] 3. After arriving at the working position, the lifting cylinder 103 moves downward to complete the first stroke, so that the front and rear tightening mechanisms 106 and the top pressing mechanism 105 move downward. When the front and rear tightening mechanisms 106 are supported on the side pressing mechanism 102, they stop and maintain pressure. At this time, there is a distance between the top pressing mechanism 105 and the workpiece, and the workpiece is between the front toggle block 1066 and the rear toggle block 1067 and there is a distance between them.

[0061] 4. The tightening cylinder 1062 moves, causing the front toe block 1066 to push the workpiece backward until it hits the rear toe block 1067, maintaining pressure;

[0062] 5. The lifting cylinder 103 moves downward again to complete the second stroke, so that the toe pressure block 13 presses against the toe, and the heel pressure block 25 presses against the heel, and the front and rear pressures are balanced. The front pressure rod group and the rear pressure rod group rise upward under the reaction force of the workpiece to maintain pressure;

[0063] 6. After rising to the right position, the tightening cylinder 1062 moves 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 and maintain the pressure;

[0064] 7. The side pressure oil cylinder 1021 moves, causing the two side pressure rubber plates 1024 to move toward each other to squeeze the left and right sides of the workpiece and maintain pressure;

[0065] 8. The lifting cylinder 103 moves downward again to complete the third stroke, so that the mounting plate 104 and the top pressing mechanism 105 move downward for a distance. At the same time, the front pressing rod group and the rear pressing rod group increase the pressure to squeeze the workpiece and maintain the pressure;

[0066] 9. When the pressure holding time is up, 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;

[0067] 10. Then, the bottom conveyor 101 is operated to deliver the processed product, and the correction conveyor 202 delivers the next product.

[0068] If automatic control is adopted, in step S1, the first induction switch is used to detect the back of the workpiece and then trigger the correction, and the timing control correction mechanism 203 is used to loosen and correct the operation of the conveyor 202; in step S2, the second induction switch is used to detect that the workpiece is conveyed backward and the bottom conveyor 101 is stopped by timing control; in step S3, the lifting cylinder 103 is again controlled by timing to start the first downward stroke and output the stop signal of the first stroke end point through the first stroke switch; in step S4, the tightening cylinder 1062 is controlled by timing to start and complete the first action; in step S5, the timing is used to control the tightening cylinder 1062 to start and complete the first action; The lifting cylinder 103 is controlled by timing to start the second downward stroke, and a stop signal of the end point of the second stroke is output through the micro switch 94; in step S6, the tightening cylinder 1062 is controlled by timing to start and complete the second action; in step S7, the side pressure cylinder 1021 is controlled by timing to start and complete the action; in step S8, the lifting cylinder 103 is controlled by timing to start and complete the third stroke; in step S9, the lifting cylinder 103 starts to rise by timing control and outputs a stop signal of resetting the end point through the second stroke switch; in step S10, the bottom conveyor 101 is restarted by timing control.

[0069] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. The sole pressing line for shoe making is characterized by: The sole pressing assembly line for shoe manufacturing comprises an electric control system, a sole pressing unit and a feeding unit for conveying workpieces adjacent to the input end of the sole pressing unit, wherein the feeding unit and the sole pressing unit are both electrically connected to the electric control system, and the feeding unit has a correction mechanism for correcting the posture and position of the workpieces; the sole pressing unit comprises a sole pressing conveyor for conveying the workpieces to a working position, a side pressing mechanism arranged on the left and right sides of the sole pressing conveyor, a mounting frame arranged above the sole pressing conveyor, a lifting cylinder installed on the top of the mounting frame, a mounting plate driven by the lifting cylinder to slide up and down along the mounting frame, a top pressing mechanism installed at the bottom of the mounting plate, and a front and rear tightening mechanism installed below the mounting plate through a guide inner frame; The side pressure mechanism comprises a plurality of side pressure components, a side pressure cylinder driving the side pressure component to move left and right, a top seat arranged on the top of the side pressure cylinder, and a side pressure rubber plate installed on the side pressure components on the front and rear sides through elastic connecting parts. Each side pressure component comprises a side pressure piston rod, a guide rod, a latch, a rubber seat and a side pressure rubber block. The side pressure piston rod is respectively matched with the side pressure cylinder through a piston sliding seal. The guide rod is slidably matched with the top seat and a locking hole matched with the latch is provided at the inner end thereof. The side pressure piston rod and the guide rod of the same side pressure component are connected to a rubber seat together. The side pressure rubber block is fixedly installed on the side of the rubber seat facing the working position, and the top seat is respectively provided with working sockets at the starting point of the stroke of each guide rod. The pressing mechanism comprises a front pressure rod group, a rear pressure rod group and a mounting seat, the mounting seat is fixedly arranged at the bottom of the mounting plate, the front pressure rod group comprises a front cylinder body filled with liquid, a front pressure rod that is slidably fitted in the front cylinder body and extends downward, and a toe pressure block installed at the bottom of the front pressure rod, the rear pressure rod group comprises a rear cylinder body filled with liquid, a rear pressure rod that is slidably fitted in the rear cylinder body and extends downward, and a rear heel pressure block installed at the bottom of the rear pressure rod, the front cylinder body and the rear cylinder body are connected together through an oil pipe; the front pressure rod group and the rear pressure rod group are respectively installed on the mounting seat A tower spring is respectively abutted between the top of the front pressure rod group and the bottom of the mounting seat, and between the top of the rear pressure rod group and the bottom of the mounting seat. The front cylinder body and the rear cylinder body are respectively slidably matched in the corresponding cylinder barrels. The cylinder barrels are respectively connected to the mounting seat through the mounting blocks on the left and right sides. A micro switch electrically connected to the electric control system is respectively installed on a mounting block on the front pressure rod group and a mounting block on the rear pressure rod group. Trigger rods are protruding from the front cylinder body and the rear cylinder body at the positions corresponding to the micro switches, and bar holes for the trigger rods to move up and down are provided at the corresponding trigger rod positions of each cylinder barrel; The front and rear tightening mechanisms include a working frame, a tightening cylinder extending forward and backward and arranged on the top surface of the working frame, the four corners of the working frame are fixedly mounted on the bottom end of the guide inner frame and the two opposing inner side walls of the working frame are respectively provided with tracks extending forward and backward, the front and rear ends of the two tracks are respectively slidably matched with a front skateboard and a rear skateboard, a front bead block is installed at the bottom of the front skateboard, and a rear bead block is installed at the bottom of the rear skateboard, the cylinder body of the tightening cylinder is fixedly connected to the rear skateboard, the piston rod of the tightening cylinder is fixedly connected to the front skateboard, and a tension spring is connected between the rear skateboard and the rear end of the working frame; the front bead block is composed of a U-shaped beam body and a guide piece sealed and connected to the lower opening of the U-shaped beam body, the guide piece is arranged to be higher in the front and lower in the rear; the rear bead block is a U-shaped structure with upper and lower openings and a front end opening.

2. The shoe-making sole pressing line according to claim 1, characterized in that: The feeding unit includes a feeding conveyor and a correction conveyor. The correction mechanism is arranged on the output side of the correction conveyor. The input end of the correction conveyor is connected to the output end of the feeding conveyor, and the output end of the correction conveyor is connected to the input end of the bottom pressing conveyor.

3. The shoe-making sole pressing production line according to claim 1, characterized in that: Slide rails are respectively arranged on the left and right sides of the mounting seat, and the mounting block is slidably matched on the slide rails of the mounting seat and is locked by fastening nails.

4. The shoe-making sole pressing production line according to claim 1, characterized in that: The bottom of the rear pressure rod is axially fixed and circumferentially rotatably covered with a rotating sleeve, the rotating sleeve has an internal thread and is threadedly matched with an adjusting rod, and the rear heel pressure block is installed at the bottom of the adjusting rod.

5. The shoe-making sole pressing production line according to any one of claims 1 to 4, characterized in that: A first induction switch is installed at the rear of the correction mechanism, a second induction switch is installed at the input end of the bottom pressing conveyor, a first travel switch that acts with the front and rear tightening mechanisms is installed on one side of the side pressing mechanism, and a second travel switch is installed on the top of the mounting plate. The first induction switch, the second induction switch, and the third induction switch are electrically connected to the electronic control system.

6. The shoe-making sole pressing production line according to claim 5, characterized in that: A third induction switch is arranged on the bottom pressing conveyor just below the rear end of the front and rear tightening mechanisms.

7. The sole pressing method of the shoe-making sole pressing line according to claim 1 is characterized in that: The specific steps include: S1. The workpiece is transported backward along the loading unit, and the correction mechanism makes the workpiece present a standard posture, that is, the toe is in front and the heel is in the back, and the front and rear axes of the workpiece are parallel to the transmission direction; S2, the correction conveyor and the bottom conveyor are running to deliver the processed objects to the working position; S3. After arriving at the working position, the lifting cylinder moves downward to complete the first stroke, so that the front and rear tightening mechanisms and the top pressing mechanism move downward. When the front and rear tightening mechanisms are supported on the side pressing mechanism, the pressure is maintained. At this time, there is a distance between the top pressing mechanism and the workpiece, and the workpiece is between the front and rear tightening mechanisms and there is a distance between them. S4, the front and rear tightening mechanisms are actuated, so that the workpiece is pressed against the front and rear restraining blocks of the front and rear tightening mechanisms to maintain pressure; S5, the lifting cylinder moves downward again to complete the second stroke, so that the toe pressure block presses against the toe, the heel pressure block presses against the heel, and the front and rear pressures are balanced, and the top pressure mechanism rises upward under the reaction force of the workpiece to maintain pressure; S6. After rising to the right position, the front and rear tightening mechanisms are activated again to clamp the front and rear ends of the workpiece and maintain pressure; S7, the side pressure mechanism is activated to squeeze the left and right sides of the workpiece and maintain pressure; S8, the lifting cylinder moves downward again to complete the third stroke, so that the mounting plate and the top pressing mechanism both move downward for a certain distance, and at the same time the top pressing mechanism increases the pressure to squeeze the workpiece and maintain the pressure; S9, when the pressure holding time is up, the side pressure mechanism is reset, the front and rear tightening mechanisms are reset, and then the lifting cylinder is pulled up and reset, driving the top pressure mechanism, the front and rear tightening mechanisms and the mounting plate to rise, and stop after rising to the right position; S10, then, the bottom conveyor operates to send out the processed product, and the loading unit sends in the next product.

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