CN112496129A

CN112496129A - Formula crank arm formula press of adjustable stroke

Info

Publication number: CN112496129A
Application number: CN202011319273.4A
Authority: CN
Inventors: 谢家锡
Original assignee: Guangzhou Yingchong Turbocharger Co ltd
Current assignee: Guangzhou Yingchong Turbocharger Co ltd
Priority date: 2020-11-23
Filing date: 2020-11-23
Publication date: 2021-03-16

Abstract

The invention relates to the related field of press machines, and discloses a stroke-adjustable crank arm type press machine, which comprises a main box body, wherein an eccentric wheel cavity is arranged in the main box body, an eccentric wheel cavity is arranged at the lower side of the eccentric wheel cavity, a connecting rod cavity is communicated and arranged at the lower side of the eccentric wheel cavity, a stamping block sliding cavity is communicated and arranged at the lower side of the connecting rod cavity, a stamping cavity which is communicated from left to right is arranged at the lower side of the stamping block sliding cavity, a stamping platform is fixedly connected to the lower end wall of the stamping cavity, a lower end face tooth cavity is arranged at the rear side of the eccentric wheel cavity, a motor fixedly connected with the main box body is arranged at the rear side of the lower end face tooth cavity, a sliding block which can move up and down is utilized to change the rotating diameter of a sliding block connecting shaft around an eccentric wheel shaft, so that the up-and-down moving range of the, the eccentric wheel can not rotate during stroke adjustment, and therefore the safety of the device during adjustment is guaranteed.

Description

Formula crank arm formula press of adjustable stroke

Technical Field

The invention relates to the related field of presses, in particular to a stroke-adjustable crank-type press.

Background

The crank arm press is the most common cold stamping equipment and is used as a working platform of a cold stamping die, the crank arm press is simple in structure, convenient to use, stable in action and reliable in work, but the working stroke of the current crank press is fixed and cannot be adjusted, and the multi-depth stamping operation cannot be carried out during working, so that the stamping die needs to be frequently replaced, the stamping operation becomes complicated, the production efficiency is reduced, and meanwhile, the probability of potential safety hazards is increased when the die is frequently replaced.

Disclosure of Invention

The invention aims to provide a stroke-adjustable crank type press machine, which can overcome the defects in the prior art, so that the practicability of equipment is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a stroke-adjustable crank arm type press machine, which comprises a main box body, wherein an eccentric wheel cavity is arranged in the main box body, an eccentric wheel cavity is arranged at the lower side of the eccentric wheel cavity, a connecting rod cavity is communicated and arranged at the lower side of the eccentric wheel cavity, a stamping block sliding cavity is communicated and arranged at the lower side of the connecting rod cavity, a stamping cavity which is communicated with the left side and the right side is arranged at the lower side of the stamping block sliding cavity, a stamping platform is fixedly connected to the lower end wall of the stamping cavity, a lower end face tooth cavity is arranged at the rear side of the eccentric wheel cavity, a motor fixedly connected with the main box body is arranged at the rear side of the lower end face tooth cavity, an eccentric wheel shaft which extends forwards into the eccentric wheel cavity and backwards extends into the lower end face tooth cavity is connected in a matching manner, an eccentric wheel which is rotatably matched and connected with the eccentric wheel cavity is fixedly connected at the front end, a bevel gear cavity is arranged at the upper side of the slide block cavity, a slide block screw rod which extends upwards into the bevel gear cavity and extends downwards to penetrate through the slide block cavity to the lower end wall of the slide block cavity is connected with the lower end wall of the bevel gear cavity in a rotating and matching way, a slide block which is connected with the slide block cavity in a sliding and matching way is connected with the slide block screw rod in a threaded and matching way, the front end surface of the slide block is fixedly connected with a slide block connecting shaft, a connecting rod which extends downwards to penetrate through the connecting rod cavity to the sliding cavity of the punching block is connected with the slide block connecting shaft in a rotating and matching way, a connecting rod connecting cavity which penetrates through the connecting rod cavity from front to back and has an upward opening is arranged in the slide block connecting shaft, a connecting rod connecting block which extends backwards to penetrate through the connecting rod connecting cavity to the back end, the connecting rod connecting block is connected with the connecting rod in a rotating fit mode.

On the basis of the technical scheme, eccentric wheel chamber upside intercommunication is equipped with the sliding gear chamber, sliding gear chamber rear side is equipped with the terminal surface tooth chamber, terminal surface tooth chamber rear side is equipped with the synchronous pulley chamber, eccentric wheel chamber rear side intercommunication is equipped with and is located the bayonet lock sliding chamber of terminal surface tooth chamber downside, eccentric wheel chamber rear side is equipped with and is located the lower terminal surface tooth chamber of bayonet lock sliding chamber downside, lower terminal surface tooth chamber upside intercommunication is equipped with the transmission pinion chamber, transmission pinion chamber rear side is equipped with and is located the drive pulley chamber of synchronous pulley chamber rear side, terminal surface tooth chamber rear end wall internal rotation cooperation is connected with and runs through backward synchronous pulley chamber extremely the drive pulley intracavity extends to driven pulley shaft in the terminal fixedly connected with driven pulley of driven pulley shaft rear side, drive pinion chamber rear end wall internal rotation cooperation is connected and extends to backward the drive pulley intracavity extends to the transmission pinion The transmission pinion shaft in the gear cavity, the terminal fixedly connected with transmission driving pulley of transmission pinion shaft rear side, transmission driving pulley with power fit is connected with driving belt between the driven pulleys, the terminal fixedly connected with transmission pinion of transmission pinion shaft front side, the epaxial spline fit connection of driven pulleys has and is located the terminal surface tooth axle sleeve in the terminal surface tooth cavity.

On the basis of the technical scheme, the tail end of the front side of the end surface gear shaft sleeve is fixedly connected with a sliding end surface gear, the tail end of the rear side of the end surface gear shaft sleeve is connected with a sliding connecting block in a rotating fit manner, a belt wheel shaft sleeve which is communicated with the left and the right is arranged in the sliding connecting block, the driven belt wheel shaft penetrates through the belt wheel shaft sleeve, the rear end surface of the sliding connecting block is fixedly connected with an upper pull rope, the front end wall of the end surface gear cavity is connected with a synchronous belt wheel shaft which extends backwards and penetrates through the end surface gear cavity to the synchronous belt wheel cavity in a rotating fit manner, the synchronous belt wheel shaft is connected with a long sliding shaft sleeve in a spline fit manner, the tail end of the front side of the long sliding shaft sleeve is connected with a long sliding shaft sleeve seat in a rotating fit manner, a synchronous shaft through cavity which is communicated with the, the pulley shaft through cavity is formed in the sliding connection block, the synchronous pulley shaft penetrates through the pulley shaft through cavity, a lower pull rope is fixedly connected to the front end face of the long sliding shaft sleeve seat, a connection block spring is fixedly connected between the rear end face of the sliding connection block and the rear end wall of the end face gear cavity, a synchronous driven pulley is fixedly connected to the rear end of the synchronous pulley shaft, and a synchronous driving pulley located in the synchronous pulley cavity is fixedly connected to the driven pulley shaft.

On the basis of the technical scheme, a synchronous driving belt wheel and a synchronous driven belt wheel are connected in a power fit manner, a straight gear shaft which extends backwards into the end surface gear cavity forwards into the sliding gear cavity is connected in a rotating fit manner in the rear end wall of the sliding gear cavity, a straight gear shaft sleeve which is positioned in the sliding gear cavity is connected in a spline fit manner on the straight gear shaft, a sliding straight gear is fixedly connected to the tail end of the front side of the straight gear shaft sleeve, a gear shaft sleeve seat is connected in a rotating fit manner at the tail end of the rear side of the straight gear shaft sleeve, a gear shaft through cavity which is through from front to back is arranged in the gear shaft sleeve seat, the straight gear shaft penetrates through the gear shaft through cavity, a gear electromagnet which is in rotating fit connection with the straight gear shaft is fixedly connected in the rear end wall of the sliding gear cavity, and a sliding gear spring is fixedly connected between the front end surface of, the end fixedly connected with of straight gear axle rear side can with the terminal surface tooth of slip terminal surface gear meshing, fixedly connected with can on the long sliding shaft cover with the slip drive gear of terminal surface tooth meshing, bayonet lock sliding cavity sliding fit is connected with the bayonet lock, bayonet lock rear end face with fixedly connected with bayonet lock spring between the bayonet lock sliding cavity rear end wall, the logical chamber of belt pulley before bayonet lock rear end face fixedly connected with.

On the basis of the technical scheme, a bayonet lock cavity with an opening backward and corresponding to the bayonet lock is arranged in the eccentric wheel, a driven bevel gear is fixedly connected with the tail end of the upper side of the slide block screw rod, a transmission big gear cavity with an upward opening is arranged on the rear side of the bevel gear cavity, a transmission big gear shaft which extends backwards into the transmission big gear cavity and extends forwards into the bevel gear cavity is connected in a rotationally matched manner on the rear end of the bevel gear cavity, a drive bevel gear shaft which is meshed with the driven bevel gear is fixedly connected with the tail end of the front side of the drive bevel gear shaft, a transmission big gear which can be meshed with the sliding straight gear is fixedly connected with the tail end of the rear side of the drive bevel gear shaft, two button sliding cavities which are symmetrical up and down and have openings to the right are arranged in the main box body, a button sliding cavity which extends downwards is communicated with the upper, the button slide intracavity sliding fit is connected with the button slide, button slide left end face with fixedly connected with button spring between the button slide left end wall, go up the stay cord other end and upside button slide right-hand member face fixed connection, the stay cord other end and downside down button slide right-hand member face fixed connection.

On the basis of the technical scheme, a motor shaft which extends forwards into the lower end face tooth cavity is fixedly connected to the front end face of the motor, lower transmission end face teeth are fixedly connected to the rear end of the eccentric wheel shaft, a lower end face tooth shaft sleeve is connected to the motor shaft in a spline fit manner, lower sliding end face teeth which can be meshed with the lower transmission end face teeth and the transmission pinion are fixedly connected to the front end of the lower end face tooth shaft sleeve, a lower end face tooth sleeve seat is connected to the rear end of the lower end face tooth shaft sleeve in a rotating fit manner, a motor shaft through cavity which is communicated from left to right is arranged in the lower end face tooth sleeve seat, a lower end face tooth spring is fixedly connected between the rear end face of the lower end face tooth sleeve seat and the rear end wall of the lower end face tooth cavity, the other end of the front belt wheel shaft through cavity is fixedly connected to the rear end face of the lower end face tooth sleeve seat, and an electromagnet, the right end face of the button sliding plate is fixedly connected with a button which is connected with the button sliding cavity in a sliding fit mode.

The invention has the beneficial effects that: the sliding block capable of moving up and down is utilized to change the diameter of the connecting shaft of the sliding block rotating around the eccentric wheel shaft, so that the range of the up-and-down movement of the connecting rod can be changed, the pressing stroke of the stamping block is changed, the device can meet the pressing requirements of different dies, meanwhile, the clamping pin is automatically clamped into the clamping pin cavity during stroke adjustment, the eccentric wheel is ensured not to rotate during stroke adjustment, and the safety of the device during adjustment is ensured.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram of an adjustable stroke crank type press according to the present invention.

Fig. 2 is a schematic view of the structure a-a in fig. 1.

Fig. 3 is an enlarged schematic view of B in fig. 1.

Fig. 4 is an enlarged schematic view of C in fig. 2.

Fig. 5 is an enlarged schematic view of D in fig. 2.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The stroke-adjustable crank arm press described with reference to fig. 1-5 comprises a main box 10, an eccentric wheel cavity 11 is provided in the main box 10, an eccentric wheel cavity 11 is provided at the lower side of the eccentric wheel cavity 11, a connecting rod cavity 16 is provided at the lower side of the eccentric wheel cavity 11, a stamping block sliding cavity 15 is provided at the lower side of the connecting rod cavity 16, a stamping cavity 13 is provided at the lower side of the stamping block sliding cavity 15, the stamping platform 12 is fixedly connected to the lower end wall of the stamping cavity 13, a lower end face tooth cavity 82 is provided at the rear side of the eccentric wheel cavity 11, a motor 24 fixedly connected to the main box 10 is provided at the rear side of the lower end face tooth cavity 82, an eccentric wheel shaft 28 extending forward into the eccentric wheel cavity 11 and backward into the lower end face tooth cavity 82 is rotatably and fittingly connected to the end of the front side of the eccentric wheel shaft 28, a slider cavity 19 with a forward opening is arranged in the eccentric wheel 18, a bevel gear cavity 70 is arranged on the upper side of the slider cavity 19, a slider screw rod 31 which extends upwards to the bevel gear cavity 70 and extends downwards to penetrate through the slider cavity 19 to the lower end wall of the slider cavity 19 is connected to the lower end wall of the bevel gear cavity 70 in a rotating and matching manner, a slider 30 which is connected with the slider cavity 19 in a sliding and matching manner is connected to the slider screw rod 31 in a threaded and matching manner, a slider connecting shaft 29 is fixedly connected to the front end face of the slider 30, a connecting rod 17 which extends downwards to penetrate through the connecting rod cavity 16 to the punching block sliding cavity 15 is connected to the slider screw rod 31 in a rotating and matching manner, a punching block 14 is connected to the punching block sliding cavity 15 in a sliding and matching manner, a connecting rod connecting shaft 27 is fixedly connected to the upper end face of the punching block 14, the connecting rod connecting cavity 26 is connected with a connecting rod connecting block 25 which extends backwards and penetrates through the connecting rod connecting cavity 26 to the rear end wall of the connecting rod connecting cavity 26 in a rotating and matching mode in the front end wall of the connecting rod connecting cavity 26, and the connecting rod connecting block 25 is connected with the connecting rod 17 in a rotating and matching mode.

In addition, in one embodiment, the upper side of the eccentric wheel cavity 11 is communicated with a sliding gear cavity 39, the rear side of the sliding gear cavity 39 is provided with an end face gear cavity 45, the rear side of the end face gear cavity 45 is provided with a synchronous gear cavity 53, the rear side of the eccentric wheel cavity 11 is communicated with a bayonet sliding cavity 61 positioned at the lower side of the end face gear cavity 45, the rear side of the eccentric wheel cavity 11 is provided with a lower end face gear cavity 82 positioned at the lower side of the bayonet sliding cavity 61, the upper side of the lower end face gear cavity 82 is communicated with a transmission pinion cavity 76, the rear side of the transmission pinion cavity 76 is provided with a transmission pulley cavity 23 positioned at the rear side of the synchronous pulley cavity 53, the rear end wall of the end face gear cavity 45 is in rotationally matched connection with a driven pulley shaft 21 which extends backwards, penetrates through the synchronous pulley cavity 53 to the transmission pulley cavity 23 and forwards extends into the end face gear cavity 45, and the rear end of the driven pulley shaft, the internal rotation fit of drive pinion chamber 76 rear end wall is connected and extends to backward drive pulley chamber 23 is inside to extend to forward drive pinion shaft 79 in the drive pinion chamber 76, the terminal fixedly connected with drive driving pulley 78 of drive pinion shaft 79 rear side, drive driving pulley 78 with power fit is connected with driving belt 22 between the driven pulley 20, the terminal fixedly connected with drive pinion 77 of drive pinion shaft 79 front side, spline fit is connected with on the driven pulley shaft 21 and is located the terminal surface tooth axle sleeve 48 in the terminal surface tooth chamber 45.

In addition, in one embodiment, a sliding end gear 47 is fixedly connected to the front end of the end face gear sleeve 48, a sliding connection block 49 is rotatably connected to the rear end of the end face gear sleeve 48, a pulley shaft sleeve 50 penetrating left and right is arranged in the sliding connection block 49, the driven pulley shaft 21 penetrates the pulley shaft sleeve 50, an upper pull rope 34 is fixedly connected to the rear end face of the sliding connection block 49, a synchronous pulley shaft 64 extending backwards through the end face gear chamber 45 to the synchronous pulley chamber 53 is rotatably connected to the front end wall of the end face gear chamber 45, a long sliding shaft sleeve 57 is connected to the synchronous pulley shaft 64 in a spline fit manner, a long sliding shaft sleeve seat 59 is rotatably connected to the front end of the long sliding shaft sleeve 57, a synchronous shaft through chamber 44 penetrating front and back is arranged in the long sliding shaft sleeve seat 59, and the synchronous pulley shaft 64 penetrates the synchronous shaft through chamber 44, the rear end of the long sliding shaft sleeve 57 is connected with the sliding connection block 49 in a rotating fit manner, a pulley shaft through cavity 55 which is through from front to back is further formed in the sliding connection block 49, the synchronous pulley shaft 64 penetrates through the pulley shaft through cavity 55, the front end face of the long sliding shaft sleeve seat 59 is fixedly connected with a lower pull rope 36, a connection block spring 87 is fixedly connected between the rear end face of the sliding connection block 49 and the rear end wall of the end face gear cavity 45, the rear end of the synchronous pulley shaft 64 is fixedly connected with a synchronous driven pulley 54, and a synchronous driving pulley 51 which is located in the synchronous pulley cavity 53 is fixedly connected to the driven pulley shaft 21.

In addition, in one embodiment, a synchronous transmission belt 52 is connected between the synchronous driving pulley 51 and the synchronous driven pulley 54 in a power fit manner, a straight gear shaft 74 which extends backwards into the end face gear cavity 45 and forwards into the sliding gear cavity 39 is connected in a rotationally fit manner in the rear end wall of the sliding gear cavity 39, a straight gear shaft sleeve 73 which is located in the sliding gear cavity 39 is connected on the straight gear shaft 74 in a spline fit manner, a sliding straight gear 72 is fixedly connected at the tail end of the front side of the straight gear shaft sleeve 73, a gear shaft sleeve seat 40 is connected at the tail end of the rear side of the straight gear shaft sleeve 73 in a rotationally fit manner, a gear shaft through cavity 41 which is through from front to back is arranged in the gear shaft sleeve seat 40, the straight gear shaft 74 penetrates through the gear shaft through cavity 41, and a gear electromagnet 43 which is connected with the straight gear shaft 74 in a rotationally fit manner is fixedly, the utility model discloses a gear electromagnet, including gear shaft sleeve seat 40, bayonet lock sliding cavity 61, gear electromagnet 43 front end face with fixedly connected with slip gear spring 42 between the gear shaft sleeve seat 40 rear end face, straight gear shaft 74 rear side end fixedly connected with can with the terminal surface tooth 46 of slip terminal surface gear 47 meshing, fixedly connected with can with the slip drive gear 58 of terminal surface tooth 46 meshing on the long slip axle sleeve 57, sliding fit is connected with bayonet lock 63 in bayonet lock sliding cavity 61, bayonet lock 63 rear end face with fixedly connected with bayonet lock spring 62 between the bayonet lock sliding cavity 61 rear end wall, belt pulley axle leads to chamber 60 before bayonet lock 63 rear end face fixedly connected with.

In addition, in an embodiment, be equipped with the opening in the eccentric wheel 18 backward and with the bayonet lock chamber 65 that bayonet lock 63 corresponds, slider lead screw 31 upside end fixedly connected with driven bevel gear 69, bevel gear chamber 70 rear side is equipped with the ascending transmission bull gear chamber 66 of opening, bevel gear chamber 70 rear end wall internal rotation cooperation is connected and extends to backward in the transmission bull gear chamber 66 forward extend to initiative bevel gear shaft 68 in bevel gear chamber 70, initiative bevel gear shaft 68 front side end fixedly connected with driven bevel gear 69 meshed drive bevel gear 71, the terminal fixedly connected with of initiative bevel gear shaft 68 rear side can with the transmission gear wheel 67 of slip straight gear 72 meshing, main tank 10 is equipped with two longitudinal symmetry and opening right button sliding chamber 37, button sliding chamber 37 upper left side intercommunication is equipped with downwardly extending and runs through button sliding chamber 37 extremely button sliding chamber 37 in the end wall under button sliding chamber 37 Slide board chamber 32, sliding fit is connected with button slide board 33 in button slide board chamber 32, button slide board 33 left end face with fixedly connected with button spring 38 between the 37 left end walls of button slide chamber, go up stay cord 34 other end and upside button slide board 33 right-hand member face fixed connection, stay cord 36 other end and downside down button slide board 33 right-hand member face fixed connection.

In addition, in one embodiment, the front end face of the motor 24 is fixedly connected with a motor shaft 80 extending forward into the lower end face tooth cavity 82, the rear end of the eccentric wheel shaft 28 is fixedly connected with a lower transmission end face tooth 86, the motor shaft 80 is connected with a lower end face tooth bushing 84 in a spline fit manner, the front end of the lower end face tooth bushing 84 is fixedly connected with a lower sliding end face tooth 85 capable of being meshed with the lower transmission end face tooth 86 and the transmission pinion 77, the rear end of the lower end face tooth bushing 84 is connected with a lower end face tooth bushing seat 83 in a rotating fit manner, a motor shaft through cavity 75 penetrating from left to right is arranged in the lower end face tooth bushing seat 83, a lower end face tooth spring 81 is fixedly connected between the rear end face of the lower end face tooth bushing seat 83 and the rear end wall of the lower end face tooth cavity 82, and the other end of the front pulley through cavity 60 is fixedly connected with the rear end face, an electromagnet 89 connected with the motor shaft 80 in a rotating fit manner is connected to the rear end wall of the lower end face tooth cavity 82 in a rotating fit manner, and a button 35 connected with the button sliding cavity 37 in a sliding fit manner is fixedly connected to the right end face of the button sliding plate 33.

The fixing and connecting method in this embodiment includes, but is not limited to, bolting, welding, and the like.

As shown in fig. 1-5, when the device of the present invention is in an initial state, the right end face of the button slide 33 is attached to the right end wall of the button slide chamber 32, the elastic force of the button springs 38 on the upper and lower sides is balanced with the elastic force of the connecting block spring 87, the upper and

lower pull ropes

34, 36 are in a tightened state, the connecting block spring 87 is in a compressed state, the sliding end face gear 47 is located on the right side of the end face teeth 46, the sliding end face gear 47 is not engaged with the end face teeth 46, the sliding transmission gear 58 is located on the left side of the sliding end face gear 47, the sliding transmission gear 58 is not engaged with the sliding end face gear 47, the elastic force of the lower end face tooth spring 81 is greater than the elastic force of the latch spring 62, the electromagnet 89 is de-energized, the lower end face tooth spring 81 is in a compressed state, the lower sliding end face tooth 85 is engaged with the lower transmission end face tooth, the bayonet spring 62 is in a compressed state, the bayonet 63 is positioned at the rear side of the bayonet cavity 65, the gear electromagnet 43 is powered off, the sliding gear spring 42 is in a relaxed state, and the sliding spur gear 72 and the transmission large gear 67 are in a meshed state;

sequence of mechanical actions of the whole device:

when the stamping die starts to work, a die is placed on the upper end face of the stamping platform 12, the motor 24 is started to drive the motor shaft 80 to rotate, so that the lower end face tooth shaft sleeve 84 rotates, the lower sliding end face tooth 85 is driven to rotate, the lower transmission end face tooth 86 rotates, the eccentric wheel shaft 28 is driven to rotate, the eccentric wheel 18 rotates, the slider 30 is driven to rotate around the eccentric wheel shaft 28, the slider connecting shaft 29 rotates around the eccentric wheel shaft 28, the connecting rod 17 is driven to reciprocate up and down, the connecting rod connecting shaft 27 is driven to reciprocate up and down, and the stamping block 14 is driven to reciprocate up and down to the upper end face of the stamping platform 12, so that a required product is stamped through the die;

when the pressing stroke of the punching block 14 needs to be increased after the die is replaced, the electromagnet 89 is electrified to attract the lower end face gear sleeve seat 83, so that the lower end face gear sleeve seat 83 moves backwards to overcome the elastic force of the lower end face gear spring 81, and then the lower end face gear sleeve 84 is driven to move backwards, so that the lower sliding end face gear 85 moves backwards to be disengaged from the lower transmission end face gear 86, the lower sliding end face gear 85 moves backwards to be engaged with the transmission pinion 77, at the moment, the front belt wheel through cavity 60 is loosened to enable the bayonet pin 63 to move forwards under the elastic force of the bayonet pin spring 62 to be abutted against the rear end face of the eccentric wheel 18, the eccentric wheel 18 continues to rotate under the action of inertia, when the bayonet pin cavity 65 rotates to the front side of the bayonet pin 63, the bayonet pin 63 continues to move forwards to the bayonet pin cavity 65, so that the eccentric wheel 18 is clamped, at the moment, the gear 43 is electrified to repel the gear sleeve seat, so that the gear bush seat 40 moves forward against the elastic force of the sliding gear spring 42, thereby driving the spur gear bush 73 to move forward, so that the sliding spur gear 72 moves forward to be engaged with the transmission large gear 67;

at this time, the lower side button 35 is pressed down, so that the lower side button 35 moves leftward, thereby driving the lower side button slide plate 33 to move leftward, thereby pulling the lower pulling rope 36, the lower side button spring 38 is compressed, thereby pulling the lower pulling rope 36 so that the synchronizing shaft through cavity 44 moves forward against the pulling force of the connecting block spring 87, thereby moving the long sliding shaft sleeve 57 forward, thereby driving the sliding connecting block 49 to move forward, thereby moving the end face gear sleeve 48 forward, thereby driving the sliding end face gear 47 to move forward to be engaged with the end face gear 46, at this time, the lower sliding end face gear 85 rotates to drive the transmission pinion 77 to rotate, thereby rotating the transmission pinion shaft 79, thereby driving the transmission driving pulley 78 to rotate, thereby driving the driven pulley 20 to rotate through the transmission belt 22, thereby rotating the driven pulley shaft 21, thereby driving the end face gear sleeve 48 to rotate, thereby rotating the sliding end face gear, thereby driving the end face teeth 46 to rotate, so that the straight gear shaft 74 rotates, and further the straight gear shaft sleeve 73 rotates, so that the sliding straight gear 72 rotates, and further the transmission gear wheel 67 rotates, so that the driving bevel gear shaft 68 rotates, and further the driving bevel gear 71 rotates, and further the driven bevel gear 69 rotates, and further the slider lead screw 31 rotates, so that the slider 30 moves upwards, and further the radius of the slider 30 rotating around the eccentric wheel shaft 28 is increased, so that the stroke of the up-and-down movement of the connecting rod 17 is increased, and further the pressing stroke of the punching block 14 is increased;

when the pressing stroke of the punching block 14 needs to be reduced, the upper button 35 is pressed, the upper pull rope 34 is pulled, the sliding connecting block 49 moves backwards under the action of the elastic force of the connecting block spring 87, so that the sliding transmission gear 58 moves backwards to be meshed with the end face teeth 46, the driven pulley shaft 21 rotates to drive the synchronous driving pulley 51 to rotate, the synchronous driven pulley 54 rotates through the synchronous transmission belt 52, the synchronous pulley shaft 64 is driven to rotate, the long sliding shaft sleeve 57 rotates, the sliding transmission gear 58 is driven to rotate, the end face teeth 46 are driven to rotate reversely, the sliding block screw rod 31 is driven to rotate reversely, the sliding block 30 moves downwards, the radius of the sliding block 30 rotating around the eccentric shaft 28 is reduced, the stroke of the connecting rod 17 moving upwards and downwards is reduced, and the pressing stroke of the punching block 14 is reduced;

when the required stroke is adjusted, the gear electromagnet 43 is powered off, the gear through cavity 41 moves backwards under the action of the pulling force of the sliding gear spring 42, so that the sliding straight gear 72 moves backwards to be disengaged from the transmission large gear 67, meanwhile, the electromagnet 89 is powered off, the lower end face gear sleeve seat 83 moves forwards under the action of the elastic force of the lower end face gear spring 81, so that the lower sliding end face gear 85 is driven to move forwards to be engaged with the lower transmission end face gear 86, the front belt wheel through cavity 60 is pulled to enable the clamping pin 63 to move backwards to be far away from the clamping pin cavity 65, the eccentric wheel shaft 28 rotates again to drive the eccentric wheel 18 to rotate, and the pressing operation is restarted.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a formula crank arm formula press of adjustable stroke, includes the main tank body, its characterized in that: an eccentric wheel cavity is arranged in the main box body, an eccentric wheel cavity is arranged on the lower side of the eccentric wheel cavity, a connecting rod cavity is communicated with the lower side of the eccentric wheel cavity, a stamping block sliding cavity is communicated with the lower side of the connecting rod cavity, a stamping cavity which is communicated with the left side and the right side is arranged on the lower side of the stamping block sliding cavity, a stamping platform is fixedly connected to the lower end wall of the stamping cavity, a lower end face tooth cavity is arranged on the rear side of the eccentric wheel cavity, a motor fixedly connected with the main box body is arranged on the rear side of the lower end face tooth cavity, an eccentric wheel which extends forwards into the eccentric wheel cavity and backwards extends into the lower end face tooth cavity is connected in a rotationally matched manner to the front end wall of the lower end face tooth cavity, an eccentric wheel which is rotationally matched and connected with the eccentric wheel cavity is fixedly connected to the front end of the eccentric wheel, a, a slide block screw rod which extends upwards into the bevel gear cavity and extends downwards to penetrate through the slide block cavity to the lower end wall of the slide block cavity is connected with the lower end wall of the bevel gear cavity in a rotating and matching manner, a slide block which is connected with the slide block cavity in a sliding and matching manner is connected onto the slide block screw rod in a threaded and matching manner, a slide block connecting shaft is fixedly connected onto the front end surface of the slide block, a connecting rod which extends downwards to penetrate through the connecting rod cavity to the sliding cavity of the punching block is connected onto the slide block connecting shaft in a rotating and matching manner, a punching block is connected into the sliding cavity of the punching block in a sliding and matching manner, a connecting rod connecting shaft which is connected onto the upper end surface of the punching block in a fixed and connecting manner, a connecting rod connecting cavity which is through from front to back and, the connecting rod connecting block is connected with the connecting rod in a rotating fit mode.

2. The adjustable stroke crank press of claim 1, wherein: eccentric wheel chamber upside intercommunication is equipped with the sliding gear chamber, sliding gear chamber rear side is equipped with the terminal surface tooth chamber, terminal surface tooth chamber rear side is equipped with the synchronous pulley chamber, eccentric wheel chamber rear side intercommunication is equipped with and is located the bayonet lock sliding chamber of terminal surface tooth chamber downside, eccentric wheel chamber rear side is equipped with and is located lower terminal surface tooth chamber of bayonet lock sliding chamber downside, lower terminal surface tooth chamber upside intercommunication is equipped with the transmission pinion chamber, transmission pinion chamber rear side is equipped with and is located the transmission pulley chamber of synchronous pulley chamber rear side, terminal surface tooth chamber rear end wall internal rotation cooperation is connected with and runs through backward synchronous pulley chamber extremely the transmission pulley intracavity extends to driven pulley shaft in the terminal surface tooth chamber, driven pulley shaft rear end fixedly connected with driven pulley, transmission pinion chamber rear end wall internal rotation cooperation is connected and extends to backward the transmission pinion shaft that the pulley intracavity extends to the transmission pinion shaft in the transmission pinion chamber The end of the rear side of the transmission pinion shaft is fixedly connected with a transmission driving pulley, the transmission driving pulley is connected with a transmission belt in a power fit manner between the driven pulleys, the end of the front side of the transmission pinion shaft is fixedly connected with a transmission pinion, and the driven pulley shaft is connected with an end face gear shaft sleeve in a spline fit manner and located in the end face gear cavity.

3. The adjustable stroke crank press of claim 2, wherein: the end face gear sleeve is fixedly connected with a sliding end face gear at the front end, the end face gear sleeve is connected with a sliding connection block at the rear end in a rotating fit manner, a belt wheel shaft sleeve which is communicated from left to right is arranged in the sliding connection block, a driven belt wheel shaft penetrates through the belt wheel shaft sleeve, an upper pull rope is fixedly connected with the rear end face of the sliding connection block, a synchronous belt wheel shaft which extends backwards and penetrates through the end face gear cavity to the synchronous belt wheel cavity is connected with the front end wall of the end face gear cavity in a rotating fit manner, a long sliding shaft sleeve is connected with the synchronous belt wheel shaft in a spline fit manner on the synchronous belt wheel shaft, a long sliding shaft sleeve seat is connected with the front end of the long sliding shaft sleeve in a rotating fit manner, a synchronous shaft through cavity which is communicated from front to back is arranged in the long sliding shaft sleeve seat, the pulley shaft through cavity is formed in the sliding connection block, the synchronous pulley shaft penetrates through the pulley shaft through cavity, a lower pull rope is fixedly connected to the front end face of the long sliding shaft sleeve seat, a connection block spring is fixedly connected between the rear end face of the sliding connection block and the rear end wall of the end face gear cavity, a synchronous driven pulley is fixedly connected to the rear end of the synchronous pulley shaft, and a synchronous driving pulley located in the synchronous pulley cavity is fixedly connected to the driven pulley shaft.

4. The adjustable stroke crank press of claim 3, wherein: the synchronous driving belt wheel and the synchronous driven belt wheel are connected with a synchronous transmission belt in a power fit manner, the rear end wall of the sliding gear cavity is connected with a straight gear shaft which extends backwards into the end surface gear cavity and extends forwards into the sliding gear cavity, the straight gear shaft is connected with a straight gear shaft sleeve which is positioned in the sliding gear cavity in a spline fit manner, the tail end of the front side of the straight gear shaft sleeve is fixedly connected with a sliding straight gear, the tail end of the rear side of the straight gear shaft sleeve is connected with a gear shaft sleeve seat in a rotating fit manner, a gear shaft through cavity which is communicated forwards and backwards is arranged in the gear shaft sleeve seat, the straight gear shaft penetrates through the gear shaft through cavity, a gear electromagnet which is connected with the straight gear shaft in a rotating fit manner is fixedly connected in the rear end wall of the sliding gear cavity, and a sliding gear spring is fixedly connected between the front end, the end fixedly connected with of straight gear axle rear side can with the terminal surface tooth of slip terminal surface gear meshing, fixedly connected with can on the long sliding shaft cover with the slip drive gear of terminal surface tooth meshing, bayonet lock sliding cavity sliding fit is connected with the bayonet lock, bayonet lock rear end face with fixedly connected with bayonet lock spring between the bayonet lock sliding cavity rear end wall, the logical chamber of belt pulley before bayonet lock rear end face fixedly connected with.

5. The adjustable stroke crank press of claim 1, wherein: the inner side of the eccentric wheel is provided with a bayonet lock cavity with a backward opening and corresponding to the bayonet lock, the tail end of the upper side of the slide block screw rod is fixedly connected with a driven bevel gear, the rear side of the bevel gear cavity is provided with a transmission big gear cavity with an upward opening, the inner wall of the rear end of the bevel gear cavity is in rotating fit connection with a driving bevel gear shaft which extends backwards into the transmission big gear cavity and extends forwards into the bevel gear cavity, the tail end of the front side of the driving bevel gear shaft is fixedly connected with a driving bevel gear which is meshed with the driven bevel gear, the tail end of the rear side of the driving bevel gear shaft is fixedly connected with a transmission big gear which can be meshed with the sliding straight gear, the main box body is provided with two button sliding cavities which are symmetrical up and down and have right openings, the upper left side of the button sliding cavity is, the button slide intracavity sliding fit is connected with the button slide, button slide left end face with fixedly connected with button spring between the button slide left end wall, go up the stay cord other end and upside button slide right-hand member face fixed connection, the stay cord other end and downside down button slide right-hand member face fixed connection.

6. The adjustable stroke crank press of claim 1, wherein: the front end face of the motor is fixedly connected with a motor shaft which extends forwards into the lower end face tooth cavity, the rear end of the rear side of the eccentric wheel shaft is fixedly connected with lower transmission end face teeth, the upper spline of the motor shaft is connected with a lower end face tooth shaft sleeve in a matching way, the front end of the lower end face tooth shaft sleeve is fixedly connected with lower sliding end face teeth which can be meshed with the lower transmission end face teeth and the transmission pinion, the rear end of the lower end face tooth shaft sleeve is connected with a lower end face tooth sleeve seat in a rotating and matching way, a motor shaft through cavity which is communicated from left to right is arranged in the lower end face tooth sleeve seat, a lower end face tooth spring is fixedly connected between the rear end face of the lower end face tooth sleeve seat and the rear end wall of the lower end face tooth cavity, the other end of the front belt wheel shaft through cavity is fixedly connected with the rear end face of the lower end face, the right end face of the button sliding plate is fixedly connected with a button which is connected with the button sliding cavity in a sliding fit mode.