Automatic feeding device for punching engine connecting rod forgings

Abstract

The application discloses an automatic feeding device for punching of an engine connecting rod forge piece in the field of engine manufacturing, and relates to the engine manufacturing technical field. The automatic feeding device comprises a vibrating feeding mechanism and a conveying mechanism, the conveying mechanism is used for conveying the forge piece blank from the feeding mechanism to a punching mechanism for punching, a indexing mechanism is arranged between the vibrating feeding mechanism and the punching mechanism, the indexing mechanism is used for indexing the forge piece blanks with different orientations on the conveying mechanism to the same direction, and the punching mechanism comprises a working head which is vertically slidably installed on a rack.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of engine manufacturing, in particular to an automatic feeding device for engine connecting rod forging punching. BACKGROUND

[0002] The engine connecting rod connects the piston and the crankshaft and transmits the force received by the piston to the crankshaft, and converts the reciprocating motion of the piston into the rotary motion of the crankshaft. The engine connecting rod mainly includes a small head, a rod body and a large head. The engine connecting rod needs to use a forging during the production process, and the forging needs to be punched by a punching machine during the use process. The forging needs to be placed under the punching machine by the feeding device before punching.

[0003] The existing feeding mechanism is usually manually fed or automatically fed by an automatic feeding machine. Manual feeding is not only cumbersome to operate, but also troublesome to use and has low feeding efficiency, and increases the operation burden of the user. The ordinary automatic feeding machine cannot distinguish the orientation of the large head and the small head of the forging, and needs manual turning and arranging to make the orientation of the forging uniform, which is extremely inconvenient. SUMMARY

[0004] The technical problem of the present application is to provide an automatic feeding device for engine connecting rod forging punching. The present application can automatically distinguish the orientation of the large head and the small head of the forging, and automatically adjust the orientation of the forging when the forging with the opposite orientation passes, so that the orientation of the forging is uniform, without manual operation, and the efficiency is improved.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical scheme: an automatic feeding device for engine connecting rod forging punching, comprising a vibrating feeding mechanism and a conveying mechanism, the conveying mechanism is used for conveying the forging from the feeding mechanism to the punching mechanism for punching; a turning mechanism is arranged between the vibrating feeding mechanism and the punching mechanism, the turning mechanism is used for turning the forgings with different orientations on the conveying mechanism to the same direction; the punching mechanism comprises a working head, and the working head is vertically slidably installed on the rack.

[0006] As a further scheme of the present application, the rotating mechanism comprises a rotating disc rotatably mounted on the frame, the rotating disc is hollow, a supporting disc is placed above the rotating disc, the upper end surface of the supporting disc is flush with the working surface of the conveying mechanism for placing the forging blank; a rotating column is key-connected and mounted at the central axis of the rotating disc, the rotating column is sleeved with the supporting disc; the upper end of the rotating column is fixedly mounted with a supporting block for jacking the middle part of the forging blank, the lower end of the rotating column is fixedly mounted with a supporting plate; the supporting block is fixedly mounted with a poking rod, the poking rod is arranged along the radial direction of the supporting block, and the poking rod is used for poking the forging blank to rotate for indexing; a spiral through groove is opened on the circumferential side wall of the rotating disc, a driving column is slidingly mounted in the spiral through groove, and the driving column is vertically slidingly mounted in the frame; one end of the driving column is fixedly mounted with a driving block for supporting the supporting plate, and the driving block is slidingly connected with the supporting plate; the other end of the driving column is connected with a driving unit, and the driving unit is used for driving the driving column to vertically slide in the frame; a limiting ring is sleeved with the outer periphery of the supporting disc, the limiting ring is vertically slidingly mounted in the frame, the upper end of the limiting ring is fixedly mounted with a limiting plate, and the limiting plate is used for limiting the movement of the forging blank along the direction perpendicular to the conveying direction; the lower end of the limiting ring is slidingly connected with the driving column, and the driving column is used for supporting the limiting ring.

[0007] As a further scheme of the present application, the frame is fixedly mounted with a supporting rod, a sliding column is vertically slidingly mounted on the supporting rod, and a second spring is arranged between the sliding column and the supporting rod; the sliding column is arranged directly above the rotating column; the lower end of the sliding column is fixedly mounted with a pressing block.

[0008] As a further scheme of the present application, the driving unit comprises a first driving plate fixedly connected with the working head, the first driving plate is vertically slidingly mounted on the frame; the lower end of the first driving plate is obliquely connected with a second driving plate, the second driving plate is horizontally slidingly mounted on the frame; the end of the second driving plate away from the first driving plate is obliquely connected with a third driving plate, and the third driving plate is vertically slidingly mounted on the frame; a first spring is arranged between the third driving plate and the frame; the third driving plate is fixedly connected with the driving column.

[0009] As a further scheme of the present application, the lower end surface of the working head is respectively threadedly connected with a large stamping head and a small stamping head, the upper end of the large stamping head and the small stamping head is respectively key-connected and mounted with a first gear and a second gear, the first gear and the second gear are all engaged with a first rack, and the first rack is horizontally slidingly mounted on the working head.

[0010] As a further scheme of the present application, a friction strip is fixedly installed on the upper end of the sliding column, the friction strip is vertically arranged, a friction wheel in friction contact with the friction strip is arranged beside the friction strip, the friction wheel is fixedly installed on a first rotating shaft, the first rotating shaft is fixedly installed on the frame, a ratchet wheel is also fixedly installed on the first rotating shaft, a torsion spring is arranged between the ratchet wheel and the frame, a second rack part is also arranged on the first rack, the ratchet wheel is engaged with the second rack part; a pawl is horizontally slidably installed on the frame, a third spring is arranged between the pawl and the frame; a driving ring is fixedly installed on the pawl, a driving wedge surface is also arranged below the driving ring, the driving wedge surface is vertically slidably installed on the frame, a jacking block is also fixedly installed on the first rack, the jacking block is used for jacking the driving slope; a cylinder is also arranged on the work head and connected with the first rack, the cylinder is used for driving the first rack to move back when the work head moves upward.

[0011] As a further scheme of the present application, a groove is opened in the support disc surface, and the groove is used for placing the shifting rod.

[0012] As a further scheme of the present application, the groove edge is a slope, and the circumferential edge of the shifting rod is also a slope.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. The present application can automatically distinguish the large head and small head orientations of the forging embryo, and when the forging embryo with the opposite orientation passes, the orientation of the forging embryo is automatically adjusted by turning, so that the orientations of the forging embryos are unified, without manual operation, and the efficiency is improved. The upward movement of the driving column not only drives the support block to jack up the middle part of the forging embryo, so that the forging embryo is inclined, and the forging embryos with different orientations are inclined in different directions, but also drives the rotating disc to rotate, and drives the shifting rod to rotate by 180 degrees, so that the forging embryos inclined in different directions are classified and adjusted. For the forging embryo with the same orientation as the specified direction, the shifting rod does not drive the forging embryo to rotate. For the forging embryo with the opposite orientation as the specified direction, the shifting rod drives the forging embryo to rotate by 180 degrees, so that it is adjusted to be consistent with the specified direction.

[0015] 2. The downward movement of the punching mechanism provides power for the turning mechanism, so that the turning adjustment of the previous forging embryo of the punching mechanism is closely matched, time is saved, and the efficiency is improved.

[0016] 3. The present application measures the thickness of the forging embryo to be punched while the support block jacks up the forging embryo, automatically adjusts the height of the large punch and the small punch on the work head in real time, can avoid the large punch and the small punch from being too close to the forging embryo, causing collision and damage to the forging embryo, and can also avoid the large punch and the small punch from being too far away from the forging embryo, so that the stroke of the work head is lengthened, the working time is prolonged, and the efficiency is reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the automated feeding device of the present invention;

[0019] Figure 2 This is a schematic diagram of the automated feeding device of the present invention in half section.

[0020] Figure 3 For the present invention Figure 2 A magnified view of part A in the middle;

[0021] Figure 4 For the present invention Figure 2 A magnified view of part B in the middle section;

[0022] Figure 5 This is a schematic diagram of the structure of the indexing mechanism and driving unit of the present invention;

[0023] Figure 6 This is a schematic diagram of the transposition mechanism of the present invention.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 11-Vibrating feeding mechanism, 12-Conveying mechanism, 13-Forging blank, 14-Punching mechanism, 15-Working head, 21-Rotating disk, 22-Supporting disk surface, 23-Rotating column, 24-Supporting block, 25-Supporting plate, 26-Actuating rod, 27-Spiral through groove, 28-Drive column, 29-Drive block, 30-Limiting ring, 31-Limiting plate, 41-Supporting rod, 42-Second spring, 43-Pressing block, 44-Sliding column, 51-First drive plate 52-Second drive plate, 53-Third drive plate, 54-First spring, 61-Large punch head, 62-Small punch head, 63-First gear, 64-Second gear, 65-First rack, 70-Cylinder, 71-Friction strip, 72-Friction wheel, 73-First rotating shaft, 74-Ratchet, 75-Second rack section, 76-Pawl, 77-Third spring, 78-Drive ring, 79-Lifting block, 80-Torsion spring, 81-Groove, 82-Drive inclined surface. Detailed Implementation

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0027] Please refer to Figures 1-6 The present application provides an automatic feeding device for punching engine connecting rod forgings, which comprises a vibrating feeding mechanism 11 and a conveying mechanism 12. The conveying mechanism 12 is used to convey the forging blanks 13 from the feeding mechanism to the punching mechanism 14 for punching. A indexing mechanism is arranged between the vibrating feeding mechanism 11 and the punching mechanism 14, which is used to index the forging blanks 13 in different orientations on the conveying mechanism 12 to the same direction. The punching mechanism 14 comprises a working head 15, which is vertically slidingly installed on a rack.

[0028] When producing engine connecting rod forgings, an automatic feeding mechanism is needed to convey the forging blanks 13 one by one to the punching mechanism 14 below for punching. The existing automatic feeding mechanism can realize feeding one by one in sequence, but the forging blanks 13 are rod-shaped, and the big head and the small head thereof are easy to be oriented differently during feeding, which needs to be manually adjusted by workers. After being oriented uniformly, the punching is performed. As shown in Figure 1 When working, the forging blanks 13 are vibrated and fed by the vibrating feeding mechanism 11 and conveyed one by one. When conveyed to the indexing mechanism, the indexing mechanism automatically distinguishes the orientation of the forging blanks 13 above. When the orientation of the big head and the small head of the forging blank 13 is consistent with the specified direction, the indexing mechanism does not adjust the orientation of the forging blank 13. When the orientation of the big head and the small head of the forging blank 13 is opposite to the specified direction, the indexing mechanism rotates the forging blank 13 to adjust it to be consistent with the specified direction, without manual operation. Then the conveying mechanism 12 conveys the forging blanks 13 with uniform orientation to the punching mechanism 14 below for punching. When punching, the working head 15 of the punching mechanism 14 is pressed downward by external power for punching.

[0029] As a further scheme of the present application, the indexing mechanism comprises a rotating disc 21 rotatably mounted on the frame, the rotating disc 21 is hollow, a supporting disc surface 22 is placed above the rotating disc 21, the upper end surface of the supporting disc surface 22 is flush with the working surface of the conveying mechanism 12 for placing the forge blank 13; a rotating column 23 is key-connected and mounted at the central axis of the rotating disc 21, the rotating column 23 is sleeved with the supporting disc surface 22; the upper end of the rotating column 23 is fixedly mounted with a supporting round block 24 for jacking the middle part of the forge blank 13, the lower end of the rotating column 23 is fixedly mounted with a supporting plate 25; the supporting round block 24 is fixedly mounted with a poking rod 26, the poking rod 26 is arranged along the radial direction of the supporting round block 24, and the poking rod 26 is used for poking the forge blank 13 to rotate for indexing; a spiral through groove 27 is opened on the circumferential side wall of the rotating disc 21, a driving column 28 is slidingly mounted in the spiral through groove 27, and the driving column 28 is vertically slidingly mounted in the frame; one end of the driving column 28 is fixedly mounted with a driving block 29 for supporting the supporting plate 25, and the driving block 29 is slidingly connected with the supporting plate 25; the other end of the driving column 28 is connected with a driving unit, and the driving unit is used for driving the driving column 28 to vertically slide in the frame; a limiting ring 30 is sleeved outside the supporting disc surface 22, the limiting ring 30 is vertically slidingly mounted in the frame, the upper end of the limiting ring 30 is fixedly mounted with a limiting plate 31, and the limiting plate 31 is used for limiting the movement of the forge blank 13 along the direction perpendicular to the conveying direction; the lower end of the limiting ring 30 is slidingly connected with the driving column 28, and the driving column 28 is used for supporting the limiting ring 30.

[0030] As Figure 2 , Figure 5 , Figure 6 shown, in the working process of the present application, the forge blank 13 is first moved to the indexing mechanism, and the forge blank 13 is located on the supporting disc surface 22. The driving column 28 is vertically upwardly moved under the driving of the driving unit. Because the driving column 28 is slidingly mounted in the spiral through groove 27, when the driving column 28 is upwardly moved, the driving column 28 slides in the spiral through groove 27 and drives the rotating disc 21 to rotate. As Figure 6As the driving column 28 moves upward, the driving block 29 fixedly installed at one end of the driving column 28 moves upward together, and the upper support plate 25 is lifted up, and the support plate 25 fixedly installed at the lower end of the rotating column 23 drives the rotating disc 21 to be static in the vertical direction, and the rotating column 23 moves upward. The upper end of the rotating column 23 is fixedly installed with the support round block 24, and the support round block 24 moves upward and lifts up the middle part of the forging blank 13. At this time, the middle part of the forging blank 13 is lifted up, and because the mass of the big end and the small end of the forging blank 13 is not the same, the forging blank 13 will tilt to the big end which is heavier. It is worth noting that, in order to prevent the forging blank 13 from sliding when it tilts, a limiting ring 30 is arranged on the outer periphery of the support disc surface 22. When the driving column 28 moves upward, the driving column 28 simultaneously lifts up the limiting ring 30 to move upward, so that the forging blank 13 is located within the limit of the limiting ring 30 when it tilts, and sliding is avoided. As described above, the driving column 28 drives the rotating disc 21 to rotate when it moves upward, the rotating disc 21 drives the rotating column 23 connected with it to rotate, the rotating column 23 drives the support round block 24 to rotate, and the support round block 24 drives the push rod 26 to rotate. Figure 6 As shown in the figure, in order to facilitate the illustration, the push rod 26 is in the shape of a hammer, and in fact, the push rod 26 can be a round rod. If the direction of the forging blank 13 is opposite to the specified direction, the push rod 26 will be in the opposite direction. Figure 6As shown, when the forging blank 13 is lifted by the supporting block 24, the heavier end of the forging blank 13 tilts. At this time, the actuating rod 26 is located near the heavier end of the forging blank 13. When the actuating rod 26 rotates, it will actuate the heavier end of the forging blank 13, driving the forging blank 13 to rotate half a turn within the limiting ring 30, adjusting the orientation of the forging blank 13 to be consistent with the specified direction. Specifically, the actuating rod 26 drives the heavier end of the forging blank 13 to rotate. During the rotation, the limiting plates 31 on both sides continuously limit the forging blank 13. The rotation of the forging blank 13 will drive the limiting plates 31 to rotate through the lighter end of the forging blank 13. The limiting plates 31 are fixedly installed on the limiting ring 30, so the limiting ring 30 rotates half a turn as well. If the orientation of the forging blank 13 is consistent with the specified direction, then when the forging blank 13 is lifted by the supporting block 24, the heavier end of the forging blank 13 tilts, and the smaller end is lifted. At this time, the actuating rod 26 is near the smaller end of the forging blank 13. When the actuating rod 26 rotates, it does not contact the forging blank 13, so the actuating rod 26 spins freely, and the forging blank 13 does not rotate. During reset, the drive column 28 resets under the drive of the drive unit, the rotating disk 21 rotates, the rotating column 23 rotates, the actuating rod 26 rotates, the supporting block 24 moves down and resets, and the forging blank 13 returns to a horizontal position on the support disk 22. The present invention utilizes the upward movement of the drive column 28 to not only drive the support block 24 to lift the middle of the forging blank 13, causing the forging blank 13 to tilt, so that forging blanks 13 with different orientations tilt in different directions; but also drives the rotating disk 21 to rotate, causing the actuating rod 26 to rotate half a turn, classifying and adjusting the forging blanks 13 tilted in different directions; for forging blanks 13 with an orientation consistent with the specified direction, the actuating rod 26 does not drive the forging blank 13 to rotate; for forging blanks 13 with an orientation opposite to the specified direction, the actuating rod 26 drives the forging blank 13 to rotate half a turn, so that it is adjusted to be consistent with the specified direction.

[0031] As a further embodiment of the present invention, a support rod 41 is fixedly installed on the frame, and a sliding column 44 is vertically slidably installed on the support rod 41. A second spring 42 is provided between the sliding column 44 and the support rod 41. The sliding column 44 is located directly above the rotating column 23. A pressing block 43 is fixedly installed at the lower end of the sliding column 44.

[0032] like Figure 5 As shown, the support rod 41 is fixedly mounted on the frame. When the forging blank 13 is lifted by the support block 24, the middle part of the forging blank 13 will contact the upper lower pressure block 43, driving the lower pressure block 43 to move upward, which in turn drives the sliding column 44 to move upward, compressing the second spring 42. At this time, the lower pressure block 43 and the support block 24 together clamp the middle part of the forging blank 13, further ensuring that the fulcrum of the forging blank 13 is always maintained in the middle, so that the forging blank 13 always rotates around the middle part of the forging blank 13 when it is moved by the actuating rod 26.

[0033] As a further scheme of the present application, the driving unit comprises a first driving plate 51 fixedly connected with the working head 15, the first driving plate 51 being vertically slidingly installed on the rack; the lower end of the first driving plate 51 is obliquely connected with a second driving plate 52, the second driving plate 52 being horizontally slidingly installed on the rack; the end of the second driving plate 52 away from the first driving plate 51 is obliquely connected with a third driving plate 53, the third driving plate 53 being vertically slidingly installed on the rack; the first spring 54 is arranged between the third driving plate 53 and the rack; the third driving plate 53 is fixedly connected with the driving column 28.

[0034] In the working process of the present application, the working head 15 on the punching mechanism 14 moves vertically downward under the external power to punch. Figure 5 As shown, the working head 15 moves vertically downward, driving the first driving plate 51 to move vertically downward, the first driving plate 51 drives the second driving plate 52 to move horizontally rightward through the oblique surface, the second driving plate 52 drives the third driving plate 53 to move vertically upward through the oblique surface, and the first spring 54 is compressed. The driving column 28 is fixedly installed on the third driving plate 53, driving the driving column 28 to move upward to adjust the position of the previous forging blank 13 of the punching mechanism 14. After the punching is completed, the working head 15 moves upward to reset the first driving plate 51, the restoring force of the first spring 54 resets the driving column 28, and the second driving plate 52 and the third driving plate 53 are also reset. The present application utilizes the downward movement of the punching mechanism 14 to provide power for the positioning mechanism, closely adjusts the position of the previous forging blank 13 of the punching mechanism 14, saves time and improves efficiency.

[0035] As a further scheme of the present application, the lower end surface of the working head 15 is respectively threadedly connected with a large stamping head 61 and a small stamping head 62, the upper end of the large stamping head 61 and the small stamping head 62 is respectively keyed connected with a first gear 63 and a second gear 64, the first gear 63 and the second gear 64 are all engaged with a first rack 65, and the first rack 65 is horizontally slidingly installed on the working head 15.

[0036] As shown, Figure 4The purpose of the setting is that when facing the forging blank 13 with different thickness, the first rack 65 is directly driven to move, the first gear 63 and the second gear 64 are rotated, and then the large stamping head 61 and the small stamping head 62 are rotated, so that the large stamping head 61 and the small stamping head 62 can be vertically and slightly adjusted in height on the working head 15, which can avoid that the large stamping head 61 and the small stamping head 62 are too close to the forging blank 13 and collide, causing damage to the forging blank 13; the large stamping head 61 and the small stamping head 62 are too close to the forging blank 13 and collide, causing damage to the forging blank 13; the large stamping head 61 and the small stamping head 62 are too far away from the forging blank 13, so that the stroke of the working head 15 is lengthened, the working time is prolonged, and the efficiency is reduced.

[0037] As a further scheme of the application, the upper end of the sliding column 44 is fixedly provided with a friction strip 71, the friction strip 71 is vertically arranged, a friction wheel 72 in friction contact with the friction strip 71 is arranged beside the friction strip 71, the friction wheel 72 is fixedly installed on a first rotating shaft 73, the first rotating shaft 73 is fixedly installed on the rack, a ratchet wheel 74 is also fixedly installed on the first rotating shaft 73, a torsional spring 80 is arranged between the ratchet wheel 74 and the rack, a second rack part 75 is also arranged on the first rack 65, the ratchet wheel 74 is engaged with the second rack part 75; a ratchet claw 76 is horizontally and slidably installed on the rack, a third spring 77 is arranged between the ratchet claw 76 and the rack; a driving ring 78 is fixedly installed on the ratchet claw 76, a driving wedge surface is also arranged below the driving ring 78, the driving wedge surface is vertically and slidably installed on the rack, a jacking block 79 is also fixedly installed on the first rack 65, and the jacking block 79 is used for jacking a driving inclined surface 82; a cylinder 70 is arranged on the working head 15 and connected with the first rack 65, and the cylinder 70 is used for driving the first rack 65 to move and reset when the working head 15 moves upward.

[0038] As Figure 3 、 Figure 5As shown, when the working head 15 presses down, the first rack 65 mounted on the working head 15 moves down together with the working head 15, and the second rack portion 75 on the first rack 65 disengages from the ratchet 74. At this time, as described above, the downward movement of the working head 15 drives the drive column 28 to move upward, which in turn drives the support block 24 to lift the forging blank 13. The middle of the forging blank 13 is lifted, pressing the lower pressure block 43 upward, which in turn drives the sliding column 44 to move upward. The upward movement of the sliding column 44 drives the friction strip 71, which is fixedly mounted above it, to move vertically upward. The friction strip 71 first moves upward to contact the friction wheel 72, and then continues to move upward, driving the friction wheel 72, which is in friction contact with it, to rotate. The rotation of the friction wheel 72 drives the rotating column 23 to rotate, and the rotation of the first rotating shaft 73 drives the ratchet 74 to rotate. At this time, the pawl 76 does not restrict the rotation in this direction. The rotation of the ratchet 74 drives the torsion spring 80 to twist. When the working head 15 moves upward to reset, the second spring 42 drives the sliding column 44 to tend to move downward to reset. However, due to the restriction of the pawl 76, the ratchet 74 does not rotate, the first rotating shaft 73 does not rotate, and the friction wheel 72 does not rotate. Therefore, at this time, the friction strip 71 slides relative to the friction wheel 72, and the friction strip 71 completely disengages from the friction wheel 72. Simultaneously with the upward reset of the working head 15, the cylinder 70 on the working head 15 drives the first rack 65 to move to the right as shown in the figure, resetting the large stamping head 61 and the small stamping head 62 to their initial state. When the upward reset of the working head 15 is complete, the first rack 65 also completes its upward reset, and the second rack portion 75 on the first rack 65 contacts the ratchet 74. Figure 3As shown, at this time, the jacking block 79 on the first rack 65 is in contact with the driving slope 82 on the frame, the driving slope 82 is jacked up, the driving slope 82 is in contact with the wedge slope of the driving ring 78, the driving ring 78 is driven by the driving slope 82 to move right, the pawl 76 moves right to lose the limit of the ratchet wheel 74, the torsional spring 80 resets to drive the first rotating shaft 73 to rotate, the first rotating shaft 73 rotates to drive the ratchet wheel 74 to rotate, the ratchet wheel 74 rotates to drive the first rack 65 to move horizontally, and the height of the large stamping head 61 and the small stamping head 62 on the work head 15 is finely adjusted. When the thickness of the workpiece blank 13 at the indexing mechanism increases, because the height of the driving column 28 moving up is constant, the increase of the thickness of the workpiece blank 13 will increase the distance of the sliding column 44 moving up, and the distance of the friction strip 71 moving up, the angle of the friction wheel 72 rotating, and the force of the torsional spring 80 storing. Thus, when recovering, the torsional spring 80 will drive the ratchet wheel 74 to rotate at an increased angle, so that the distance of the first rack 65 moving driven by the ratchet wheel 74 increases, and the height of the large stamping head 61 and the small stamping head 62 on the work head 15 increases. The present application measures the thickness of the workpiece blank 13 to be stamped while jacking up the workpiece blank 13 by the support circular block 24, automatically adjusts the height of the large stamping head 61 and the small stamping head 62 on the work head 15 in real time, can avoid the large stamping head 61 and the small stamping head 62 from colliding with the workpiece blank 13 due to being too close to the workpiece blank 13, and causing damage to the workpiece blank 13, and can also avoid the large stamping head 61 and the small stamping head 62 from being too far away from the workpiece blank 13, so that the stroke of the work head 15 is lengthened, the working time is prolonged, and the efficiency is reduced.

[0039] As a further scheme of the present application, the support disc surface 22 is provided with a groove 81 for placing the shifting rod 26. Figure 6 As shown, the purpose of this setting is to make the support disc surface 22 flat, so that the workpiece blank 13 can enter and leave the indexing mechanism horizontally.

[0040] As a further scheme of the present application, the groove edge of the groove 81 is a slope, and the circumferential edge of the shifting rod 26 is a slope. Figure 6 As shown, when the driving column 28 moves up, the shifting rod 26 rotates while moving up, and this setting is to facilitate the smooth sliding of the shifting rod 26 out of the groove 81.

Claims

1. An automated feed device for punching engine connecting rod forgings, characterized by: The device comprises a vibrating feeding mechanism (11) and a conveying mechanism (12) for conveying the forging blank (13) from the feeding mechanism to a punching mechanism (14) for punching; a indexing mechanism is arranged between the vibrating feeding mechanism (11) and the punching mechanism (14), and is used for indexing the forging blanks (13) in different orientations on the conveying mechanism (12) to the same orientation; the punching mechanism (14) comprises a working head (15) vertically slidingly installed on a rack; The indexing mechanism comprises a rotating disc (21) rotatably installed on the rack, the rotating disc (21) is hollow, a supporting disc surface (22) is arranged above the rotating disc (21), and the upper end surface of the supporting disc surface (22) is flush with the working surface of the conveying mechanism (12) for placing the forging blank (13); a rotating column (23) is key-connectedly installed at the central axis of the rotating disc (21), the rotating column (23) is sleeved with the supporting disc surface (22); the upper end of the rotating column (23) is fixedly installed with a supporting circular block (24) for jacking the middle part of the forging blank (13), and the lower end of the rotating column (23) is fixedly installed with a supporting plate (25); the supporting circular block (24) is fixedly installed with a poking rod (26), the poking rod (26) is arranged along the radial direction of the supporting circular block (24), and the poking rod (26) is used for poking the forging blank (13) to rotate for indexing; a spiral through groove (27) is formed in the circumferential sidewall of the rotating disc (21), a driving column (28) is slidingly installed in the spiral through groove (27), and the driving column (28) is vertically slidingly installed in the rack; one end of the driving column (28) is fixedly installed with a driving block (29) for supporting the supporting plate (25), the driving block (29) is slidingly connected with the supporting plate (25); the other end of the driving column (28) is connected with a driving unit, the driving unit is used for driving the driving column (28) to vertically slide in the rack; a limiting ring (30) is sleeved with the outer periphery of the supporting disc surface (22), the limiting ring (30) is vertically slidingly installed in the rack, the upper end of the limiting ring (30) is fixedly installed with a limiting plate (31), and the limiting plate (31) is used for limiting the movement of the forging blank (13) along the direction perpendicular to the conveying direction; the lower end of the limiting ring (30) is slidingly connected with the driving column (28), and the driving column (28) is used for supporting the limiting ring (30); A supporting rod (41) is fixedly installed on the rack, a sliding column (44) is vertically slidingly installed on the supporting rod (41), and a second spring (42) is arranged between the sliding column (44) and the supporting rod (41); the sliding column (44) is arranged directly above the rotating column (23); the lower end of the sliding column (44) is fixedly installed with a pressing block (43). The driving unit comprises a first driving plate (51) fixedly connected with the working head (15), the first driving plate (51) is vertically slidingly installed on the rack; the lower end of the first driving plate (51) is obliquely connected with a second driving plate (52), the second driving plate (52) is horizontally slidingly installed on the rack; the end of the second driving plate (52) away from the first driving plate (51) is obliquely connected with a third driving plate (53), the third driving plate (53) is vertically slidingly installed on the rack; the first spring (54) is arranged between the third driving plate (53) and the rack; the third driving plate (53) is fixedly connected with the driving column (28).

2. An automatic feed device for punching of engine connecting rod forgings according to claim 1, characterized in that: The lower end surface of the working head (15) is respectively threadedly connected with a large stamping head (61) and a small stamping head (62), the upper end of the large stamping head (61) and the small stamping head (62) is respectively keyedly connected with a first gear (63) and a second gear (64), the first gear (63) and the second gear (64) are all engaged with a first rack (65), and the first rack (65) is horizontally slidingly installed on the working head (15).

3. An automatic feed device for piercing engine connecting rod forgings according to claim 2, characterized in that: The upper end of the sliding column (44) is fixedly installed with a friction strip (71), the friction strip (71) is vertically arranged, a friction wheel (72) in frictional contact with the friction strip (71) is arranged beside the friction strip (71), the friction wheel (72) is fixedly installed on a first rotating shaft (73), the first rotating shaft (73) is fixedly installed on the rack, a ratchet wheel (74) is also fixedly installed on the first rotating shaft (73), the torsional spring (80) is arranged between the ratchet wheel (74) and the rack, a second rack portion (75) is also arranged on the first rack (65), the ratchet wheel (74) is engaged with the second rack portion (75), the pawl (76) is horizontally slidingly installed on the rack, the third spring (77) is arranged between the pawl (76) and the rack, the driving ring (78) is fixedly installed on the pawl (76), the driving wedge surface is also arranged below the driving ring (78), the driving wedge surface is vertically slidingly installed on the rack, the jacking block (79) is also fixedly installed on the first rack (65), and the jacking block (79) is used for jacking the driving inclined surface (82); the cylinder (70) is arranged on the working head (15) and connected with the first rack (65), and the cylinder (70) is used for driving the first rack (65) to move back when the working head (15) moves upward.

4. An automatic feed device for piercing engine connecting rod forgings according to claim 3, characterized in that: The concave groove (81) is arranged in the support disc surface (22), and is used for placing the shifting rod (26).

5. An automatic feed device for piercing engine connecting rod forgings according to claim 4, characterized in that: The groove edge of the concave groove (81) is a bevel, and the circumferential edge of the shifting rod (26) is a bevel.

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