CN109822962B - Lifting adjustable pressure machine - Google Patents
Lifting adjustable pressure machine Download PDFInfo
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- CN109822962B CN109822962B CN201910245277.3A CN201910245277A CN109822962B CN 109822962 B CN109822962 B CN 109822962B CN 201910245277 A CN201910245277 A CN 201910245277A CN 109822962 B CN109822962 B CN 109822962B
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Abstract
The invention relates in particular to a manual press. Aim at provides the adjustable press of lift that a commonality is strong. The technical scheme adopted by the invention is as follows: a lifting adjustable pressure machine comprises a base and a pressing device, wherein the pressing device is arranged above the base through an inverted L-shaped support arm frame; the base includes the workstation and evenly sets up a plurality of lift supporting legs in the workstation bottom, the lift supporting leg is including the support sleeve, supporting spring and the bracing piece of arranging from top to bottom, the bottom surface rigid coupling of support sleeve's upper end and workstation, the upper end of bracing piece is worn to establish in supporting the cover to constitute sliding fit with support sleeve. The invention can adjust the height of the manual press, so that the manual press can better accord with the height and the operation position of a user, and the operation comfort level is improved.
Description
Technical Field
The invention relates to the technical field of presses, in particular to a manual press.
Background
A press machine is a widely used forming machine that forms a raw material by applying a strong pressure to a metal blank, plastic powder, ceramic powder, or the like. The manual press is one of the presses, and it provides extrusion power through direct manual operation of staff, and it has advantages such as small, portable transport, installation flexibility ratio height, do not receive the installation place restriction. However, the existing manual press still has certain defects in the using process: 1. in the process of forming the workpiece, the extrusion force needs to be maintained within a certain range, and the structure of the workpiece is easily damaged due to overlarge pressure, so that the strength of the workpiece is poor. The existing manual press machine does not have the pressure limiting capability, the pressure is mainly judged in real time by observing a pressure gauge through a worker, and therefore errors are easily caused, quality problems are caused, and the rejection rate of products is increased. 2. Its high unable regulation of current manual press, to the operator of different heights, because the operating time of manual press is longer, if press and user's height mismatch, the comfort level of using will serious influence. 3. The pressure head of the existing manual press can be adjusted in the height direction only by lifting, and cannot be integrally adjusted in the front-back direction, so that when a workpiece is wide, only the back side of the workpiece can be machined, the front side and the middle part of the workpiece cannot be machined, and the universality is poor.
Disclosure of Invention
The invention aims to provide a lifting adjustable press with strong universality.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a lifting adjustable pressure machine comprises a base and a pressing device, wherein the pressing device is arranged above the base through an inverted L-shaped support arm frame;
the base comprises a workbench and a plurality of lifting support legs uniformly arranged at the bottom of the workbench, the lifting support legs comprise support sleeves, support springs and support rods which are arranged up and down, the upper ends of the support sleeves are fixedly connected with the bottom surface of the workbench, and the upper ends of the support rods penetrate through the support sleeves and form sliding fit with the support sleeves; the outer surface of the supporting sleeve is provided with external threads, and the supporting sleeve is sleeved with an adjusting sleeve; the adjusting sleeve is in threaded fit with the supporting sleeve, a circle of first resisting edges are arranged on the circumferential surface of the lower end of the adjusting sleeve, and a circle of second resisting edges are arranged on the circumferential surface of the middle part of the supporting rod; the supporting spring is sleeved outside the supporting sleeve and the supporting rod and is positioned between the first resisting edge and the second resisting edge.
Preferably, the lower end of the supporting rod is provided with a supporting disc, and the bottom surface of the supporting disc is provided with a rubber wear-resistant layer.
Preferably, the workstation is squarely, the quantity of lift supporting leg is four, and is located four edges of workstation bottom surface respectively.
Preferably, the upper end of the support sleeve is provided with a connecting disc, and the connecting disc is connected with the workbench through a bolt.
Preferably, the pressing device comprises a vertical mounting cylinder fixedly connected with the support arm and a screw rod, a central hole in the mounting cylinder is square, a square ejection column matched with the central hole is arranged in the central hole, and the ejection column is in sliding fit with the mounting cylinder; the lower end of the top column extends out of the mounting cylinder and is fixedly connected with the pressure head, and a vertical threaded hole is formed in the upper section of the top column; the lower section of the screw rod penetrates through the threaded hole and is in threaded fit with the top column, the upper end of the screw rod is provided with a limiting disc, and the upper end of the mounting cylinder is provided with an end cover; the limiting disc is positioned between the end cover and the top of the mounting cylinder, and the end cover is connected with the mounting cylinder through a bolt; the center of the top surface of the limiting disc is provided with a connecting shaft, and the upper end of the connecting shaft penetrates out of the end cover to be connected with an adjusting hand wheel.
Preferably, the connecting shaft is provided with a pressure limiting mechanism, the connecting shaft consists of an upper half shaft and a lower half shaft, and the pressure limiting mechanism comprises a plurality of vertical key slots with isosceles trapezoid-shaped cross sections, which are uniformly arranged on the circumferential surface of the lower end of the upper half shaft; a vertical first blind hole is formed in the upper end face of the lower half shaft; the lower end of the upper half shaft penetrates through the first blind hole and is in running fit with the lower half shaft; a vertical strip-shaped through hole penetrating through the inner surface and the outer surface of the lower half shaft is formed in the side wall of one side of the first blind hole, a sliding block matched with the strip-shaped through hole is arranged in the strip-shaped through hole, and a connecting key matched with the key groove is arranged on the inner side of the sliding block;
the pressure limiting mechanism further comprises a mounting box, the mounting box is sleeved outside the junction of the upper half shaft and the lower half shaft, the mounting box is fixedly connected with the lower half shaft, and the upper half shaft penetrates out of the top of the mounting box and is in running fit with the mounting box; the side wall of the mounting box, which is on the same side as the sliding block, is also provided with a transverse threaded short pipe, and a matched adjusting bolt is arranged in the threaded short pipe; a second blind hole extending along the length direction of the adjusting bolt is formed in the end face of the rod part of the adjusting bolt, a pressure limiting spring and an ejector rod are sequentially arranged in the second blind hole from inside to outside, and the ejector rod and the second blind hole are in sliding fit; a pressurizing linkage component is further arranged in the mounting box, and the sliding block is matched with the ejector rod through the pressurizing linkage component;
the pressurizing linkage component comprises a waist-shaped plate and a lever which are sequentially arranged from top to bottom, and the middle part of the waist-shaped plate and the middle part of the lever are respectively hinged with the side wall of the mounting box through a first hinge shaft and a second hinge shaft; the upper part and the lower part of the waist-shaped plate are respectively provided with a connecting pin; a first vertical strip-shaped pin hole is formed in the outward side of the sliding block, and a second strip-shaped pin hole extending along the length direction of the lever is formed in the upper end of the lever; the first strip-shaped pin hole and the second strip-shaped pin hole are matched with the connecting pin, the connecting pin positioned at the upper part of the waist-shaped plate is inserted into the first strip-shaped pin hole, and the connecting pin positioned at the lower part of the waist-shaped plate is inserted into the second strip-shaped pin hole; the lower end of the lever is in contact with the ejector rod.
Preferably, the mounting box consists of a box body and a box cover at the top of the box body; a circle of connecting edges are correspondingly arranged on the peripheral surface of the top of the box body and the peripheral surface of the bottom of the box cover, and the box body is connected with the connecting edges of the box cover through bolts; the circumferential surface of the upper half shaft is also provided with a circle of axial limiting edges, and the axial limiting edges are located between the box cover and the top of the lower half shaft.
Preferably, a circle of fixed edge is arranged on the circumferential surface of the lower half shaft, the fixed edge is located in the box body, and the bottom surface of the box body is connected with the fixed edge through a bolt.
Preferably, the end surface of the ejector rod, which is far away from one end of the pressure limiting spring, is spherical.
Preferably, one surface of the lower end of the lever facing the ejector rod is provided with a contact table, and the contact table is provided with an arc-shaped concave part.
The beneficial effects of the invention are concentrated and expressed as follows: the height of the manual press can be adjusted, so that the manual press can better accord with the height and the operation body position of a user, and the comfort level of operation is improved. Specifically, when the lifting supporting leg is used and needs to be lifted, the adjusting sleeve is rotated in the positive direction and moves downwards along the supporting sleeve, the length of the supporting rod extending into the supporting sleeve is shortened under the action of the supporting spring, and the whole lifting supporting leg is lengthened. When needs reduce, the contrarotation adjusting collar, adjusting collar move up along the support sleeve, and under supporting spring's effect, the length that the bracing piece stretched into in the support sleeve becomes long, and the whole shortening of lift supporting leg. The lifting support leg can facilitate a user to quickly adjust the height of the press machine, and is very convenient to use. Meanwhile, the length of each lifting supporting leg can be independently adjusted, so that the lifting support leg can be suitable for various uneven installation sites.
Drawings
FIG. 1 is a schematic side view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic view of the lifting support leg prior to assembly;
FIG. 4 is a schematic view of the internal structure of the pressing device;
FIG. 5 is a schematic structural view of the pressure limiting mechanism;
FIG. 6 is a schematic view of the internal structure of the pressure limiting mechanism;
FIG. 7 is a schematic diagram of the structure shown in FIG. 6 in an over-pressure condition;
FIG. 8 is a schematic view of the waist panel;
fig. 9 is a schematic view of the slider mounted in a plan view.
Detailed Description
The manual press shown in fig. 1 to 9 is the same as a conventional manual press, and mainly includes a base 1 and a pressing device 2, the pressing device 2 is erected above the base 1 through an inverted L-shaped supporting arm 3, a pressing head 7 is arranged on the pressing device 2, and a user drives the pressing head 7 to move downwards towards the base 1 by hand, so as to realize extrusion processing of a workpiece on the base 1. The specific types of said pressing means 2 are more, for example: screw drive, rack and pinion drive, lever drive, and the like.
The improvement of the first aspect of the present invention is directed to an improvement of the screw-driven pressing device 2 in view of pressure limitation. The screw driving type pressing device 2 is substantially the same as the pressing device 2 in the prior art, and as shown in fig. 4, the pressing device 2 comprises a vertical mounting tube 4 fixedly connected with a supporting arm 3 and a screw 5. The center hole in the installation cylinder 4 is square, a square ejection column 6 matched with the center hole is arranged in the center hole, and the ejection column 6 is in sliding fit with the installation cylinder 4. The lower end of the top column 6 extends out of the mounting cylinder 4 and is fixedly connected with the pressure head 7, and a vertical threaded hole is formed in the upper section of the top column 6. The lower section of the screw rod 5 penetrates through the threaded hole and forms threaded fit with the top column 6, the upper end of the screw rod 5 is provided with a limiting disc 8, and the upper end of the installation cylinder 4 is provided with an end cover 9. Spacing dish 8 is located between the top of end cover 9 and installation section of thick bamboo 4, end cover 9 passes through the bolt and is connected with installation section of thick bamboo 4, and it should be noted that end cover 9 should not influence spacing dish 8 and rotate on the horizontal direction, will ensure again to spacing 8 vertical spacing. The center of the top surface of the limiting disc 8 is provided with a connecting shaft 10, and the upper end of the connecting shaft 10 penetrates out of the end cover 9 and is connected with an adjusting hand wheel 11. The working principle of the pressing device 2 is that the adjusting hand wheel 11 drives the screw rod through the connecting shaft 10, and then the ejection column 6 is driven to lift through the rotation of the screw rod 5, so that the extrusion of a workpiece is realized.
Compared with the traditional screw rod driving type pressing device 2, and shown in the combined drawings of fig. 1 and fig. 5-9, the connecting shaft 10 is provided with the pressure limiting mechanism, and compared with the traditional manual press, the invention limits the upper limit of the extrusion force by using the pressure limiting mechanism, prevents the occurrence of overlarge pressure, can greatly reduce the probability of processing errors and improve the yield of products. The connecting shaft 10 is composed of an upper half shaft 12 and a lower half shaft 13, as shown in fig. 6, that is, the connecting shaft 10 is composed of an upper section and a lower section. As shown in fig. 6 and 9, the pressure limiting mechanism includes a plurality of vertical key slots 14 with isosceles trapezoid cross section uniformly arranged on the circumferential surface of the lower end of the upper half shaft 12. And a vertical first blind hole 15 is formed in the upper end surface of the lower half shaft 13. The first blind hole 15 is matched with the lower end of the upper half shaft 12, and the lower end of the upper half shaft 12 penetrates through the first blind hole 15 and is in running fit with the lower half shaft 13. Be provided with the vertical bar through-hole 16 that runs through external surface in the semi-axis 13 down on the lateral wall of first blind hole 15 one side, be provided with in the bar through-hole 16 with bar through-hole 16 matched with sliding block 17, the inboard of sliding block 17 is provided with the connecting key 18 with keyway 14 matched with, and connecting key 18 card is gone into in the keyway 14 and is realized the key-type connection of semi-axis 12 and semi-axis 13 down promptly, realizes the transmission.
As shown in fig. 6, the pressure limiting mechanism further includes a mounting box 19, the mounting box 19 is sleeved outside a junction between the upper half shaft 12 and the lower half shaft 13, that is, the mounting box 19 is sleeved outside both the upper half shaft 12 and the lower half shaft 13, but the mounting box 19 is fixedly connected with the lower half shaft 13, the upper half shaft 12 penetrates through the top of the mounting box 19 and forms a rotating fit with the mounting box 19, and the specific form of the mounting box 19 fixedly connected with the lower half shaft 13 is more, such as: die casting, integral molding, welding, bolting, and the like. The side wall of the same side of the mounting box 19 and the sliding block 17 is also provided with a transverse threaded short pipe 20, namely the side wall of the left side of the mounting box 19 in fig. 6 is also provided with a transverse threaded short pipe 20, the threaded short pipe 20 is internally provided with a matched adjusting bolt 21, and in order to improve the strength of the threaded short pipe 20, a small-sized triangular reinforcing rib plate is arranged between the side wall of the threaded short pipe 20 and the outer surface of the box body. The end face of the rod part of the adjusting bolt 21 is provided with a second blind hole extending along the length direction of the adjusting bolt 21, a pressure limiting spring 22 and an ejector rod 23 are sequentially arranged in the second blind hole from inside to outside, and the ejector rod 23 and the second blind hole form sliding fit. Because the force of the pressure limiting spring 22 is used as the control force of the clutch, the required force is larger, and in order to amplify the elastic force of the pressure limiting spring 22, a pressurizing linkage component is also arranged in the mounting box 19 of the pressure limiting mechanism, and the sliding block 17 is matched with the ejector rod 23 through the pressurizing linkage component.
The concrete structure of pressure boost linkage assembly is as shown in fig. 6, 7 and 8, pressure boost linkage assembly is including waist board 24 and the lever 25 that from top to bottom sets gradually, the middle part of waist board 24 and the middle part of lever 25 constitute through first articulated shaft and second articulated shaft and the lateral wall of mounting box 19 and articulate respectively. The waist plate 24 is provided at upper and lower portions thereof with a connecting pin 26, respectively. A first vertical bar-shaped pin hole 27 is formed in the outward side of the sliding block 17, and a second bar-shaped pin hole 28 extending along the length direction of the lever 25 is formed in the upper end of the lever 25. The first strip pin hole 27 and the second strip pin hole 28 are matched with the connecting pin 26, the connecting pin 26 positioned at the upper part of the waist-shaped plate 24 is inserted into the first strip pin hole 27, and the connecting pin 26 positioned at the lower part of the waist-shaped plate 24 is inserted into the second strip pin hole 28. The lower end of the lever 25 is in contact with the top rod 23.
The working principle of the pressure limiting mechanism of the invention is as follows: the pressure limiting spring 22 applies elastic force to the ejector rod 23 in a compressed state, the elastic force is amplified through a lever structure formed by a lever 25 and a waist-shaped plate 24 and then applied to the sliding block 17, so that the connecting key 18 on the inner side of the sliding block 17 extends into the key groove 14, and at the moment, the upper half shaft 12 and the lower half shaft 13 are in a combined state, namely a state that the pressure is not over-limited; the ejection column 6 can be normally pressed down under the driving of the adjusting hand wheel 11 for use, the resistance of the ejection column 6 is increased along with the increase of the pressing force of the ejection column 6, and the resistance of the lower half shaft 13 of the connecting shaft 10 is also continuously increased; when the pressure exceeds the threshold value (i.e., the limit value), the elastic force exerted by the limiting spring 22 is insufficient to maintain the connecting key 18 of the sliding block 17 in the key slot 14, the sliding block 17 will move outwards against the elastic force transmitted by the limiting spring 22, and the connecting key 18 is withdrawn from the key slot 14, and the upper half shaft 12 and the lower half shaft 13 are in a separated free rotation state. No matter how far the adjustment hand wheel 11 continues to be rotated, the depression force cannot be increased any more. The invention limits the pressure in such a way, can ensure that the pressure of the manual press does not exceed the limit, prevents the workpiece from being damaged due to overlarge pressure, and improves the yield of the workpiece. Meanwhile, the pressure limiting device can be used for conveniently and rapidly adjusting the pressure limiting value by a user through the adjusting bolt 21, has strong universality and can meet various pressure limiting requirements. Of course, the determination of the upper limit of the pressure generally requires that before the beginning of the formal machining, a simulation test is performed, an actual pressure limiting value is measured by matching with a pressure gauge, and then the adjusting bolt 21 is adjusted according to the actual measured pressure limiting value.
In order to facilitate the disassembly and the maintenance of the pressure limiting mechanism, the mounting box 19 is composed of a box body and a box cover at the top of the box body. The peripheral surface of box body top and the peripheral surface of lid bottom correspond and are provided with round connection arris 29, pass through bolted connection between the connection arris 29 of box body and lid. The circumferential surface of the upper half shaft 12 is further provided with a circle of axial limiting edges 30, the axial limiting edges 30 are located between the box cover and the top of the lower half shaft 13, further, the circumferential surface of the lower half shaft 13 is provided with a circle of fixing edges 31, the fixing edges 31 are located in the box body, and the bottom surface of the box body is connected with the fixing edges 31 through bolts.
In order to enable the end of the top rod 23 to stably contact with the lower end of the lever 25, the end surface of the top rod 23 far away from the pressure limiting spring 22 is spherical. Further, a contact platform 32 is arranged on one surface of the lower end of the lever 25 facing the mandril 23, and an arc-shaped concave part is arranged on the contact platform 32. In this way, the contact between the push rod 23 and the lever 25 is more stable. In order to enable the connecting pin 26 to be more smoothly matched with the first strip pin hole 27 and the second strip pin hole 28, a layer of self-lubricating copper sleeve can be further arranged on the inner walls of the first strip pin hole 27 and the second strip pin hole 28, the self-lubricating copper sleeve is in the prior art, and the shape of the self-lubricating copper sleeve only needs to be adaptively deformed according to the shapes of the first strip pin hole 27 and the second strip pin hole 28. To facilitate the turning of the adjusting bolt 21, the adjusting bolt 21 is typically a glue head bolt.
In addition to the above-mentioned modifications, another difference of the present invention is that, as shown in fig. 1 and 3, the base 1 includes a work table, which is usually a table top, and a plurality of elevating support legs 33 uniformly provided on the bottom of the work table. The lifting support leg 33 comprises a support sleeve 34, a support spring 35 and a support rod 36 which are arranged up and down, the upper end of the support sleeve 34 is fixedly connected with the bottom surface of the workbench, and the upper end of the support rod 36 penetrates through the support sleeve 34 and forms sliding fit with the support sleeve 34. The surface of support sleeve 34 is provided with the external screw thread, and support sleeve 34 overcoat is equipped with adjusting collar 37, and the outer fringe of adjusting collar 37 can be outer hexagonal shape, is convenient for more rotate. The adjusting sleeve 37 is in threaded fit with the supporting sleeve 34, a circle of first resisting ribs 38 is arranged on the circumferential surface of the lower end of the adjusting sleeve 37, and a circle of second resisting ribs 39 is arranged on the circumferential surface of the middle part of the supporting rod 36. The supporting spring 35 is sleeved outside the supporting sleeve 34 and the supporting rod 36 and is located between the first resisting edge 38 and the second resisting edge 39.
When the lifting supporting leg is used and needs to be lifted, the adjusting sleeve 37 is rotated in the positive direction, the adjusting sleeve 37 moves downwards along the supporting sleeve 34, the length of the supporting rod 36 extending into the supporting sleeve 34 is shortened under the action of the supporting spring 35, and the whole lifting supporting leg is lengthened. When the lifting support leg needs to be lowered, the adjusting sleeve 37 is rotated reversely, the adjusting sleeve 37 moves upwards along the support sleeve 34, the length of the support rod 36 extending into the support sleeve 34 is lengthened under the action of the support spring 35, and the whole lifting support leg is shortened. The lifting support leg can facilitate a user to quickly adjust the height of the press machine, and is very convenient to use. Meanwhile, the length of each lifting supporting leg can be independently adjusted, so that the lifting support leg can be suitable for various uneven installation sites.
In order to further improve the stability of the lifting support leg, the lower end of the support rod 36 is provided with a support disc 40, and the bottom surface of the support disc 40 is provided with a rubber wear-resistant layer. Usually, the workbench is square, and the number of the lifting support legs 33 is four, and the lifting support legs are respectively positioned at four corners of the bottom surface of the workbench. Of course, the workbench may have other shapes, and the installation position, the distance, and the like of the lifting support legs 33 are determined according to the actual shape of the workbench, so as to be stable in an overall manner. In order to facilitate the disassembly and assembly of the lifting support leg, the upper end of the support sleeve 34 is provided with a connecting disc 41, and the connecting disc 41 is connected with the workbench through a bolt. After the lifting support leg is used, the lifting support leg can be detached independently, the height is reduced, and the storage is convenient.
The improvement in height adjustment of the press according to the invention can be applied in existing presses alone or in combination with other improvements described in the description of the invention.
In addition, the present invention is different in that the pressing device 2 of the present invention can be integrally adjusted on the base 1 in the front-back direction, which is the front direction facing the user and the back direction facing the back in the normal use state, i.e., the left direction is the front direction and the right direction is the back direction in fig. 1. The support arm 3 includes vertical stand section and the crossbeam section of setting at stand section top. As shown in fig. 2, the beam section includes a first connection beam 42 and a second connection beam 43, the first connection beam 42 is fixedly connected to the pressing device 2, the second connection beam 43 is fixedly connected to the column section, generally, the second connection beam 43 and the column section are an integral structure, and the first connection beam 42 is connected to the pressing device 2 through a bolt. The opposite end surfaces of the first connecting beam 42 and the second connecting beam 43 are respectively provided with a guide slide bar 44 and a guide bar hole 45, the guide slide bar 44 is matched with the guide bar hole 45 and penetrates through the guide bar hole 45, the cross sections of the guide bar hole 45 and the guide slide bar 44 can be square or other polygonal shapes, and the stability is better. Of course, a circular shape can also be used, but in this case at least two sets of guide rod holes 45 and guide rods 44 are usually provided in order to ensure stability.
As shown in fig. 2, a rack 46 extending toward the second connecting beam 43 is disposed on the upper portion of the first connecting beam 42, an installation groove 47 is disposed on the top of the second connecting beam 43, a gear 48 is disposed in the installation groove 47, and the gear 48 is engaged with the rack 46. The gear 48 is driven by a hand crank 49 arranged on the side surface of the second connecting beam 43, namely the gear 48 is in transmission connection with the hand crank 49, regarding the installation of the gear, a rotating shaft is usually arranged in the installation groove 47, one section of the rotating shaft is connected with the hand crank 49, and the gear 48 is sleeved outside the rotating shaft and forms key connection with the rotating shaft. Of course, other ways of mounting the gear 48 are possible.
The supporting arm beam section of the invention is composed of two sections, when the pressing device needs to be adjusted back and forth, the hand crank 49 is rotated, the gear 48 is driven to rotate, the gear 48 drives the first connecting beam 42 to move through the rack 46, and therefore the back and forth position of the pressing device 2 is changed. The invention adopts the gear 48, the rack 46, the guide slide bar 44 and the guide bar hole 45 for double limiting, and has good moving stability. Compared with the traditional mode, aiming at some workpieces with larger front and back widths, the invention can lead the right lower part of the pressure head 7 to be far away from the supporting arm by adjusting the pressing device 2 forwards, thereby avoiding the interference of the supporting arm on the installation of the workpieces, and being especially suitable for processing the workpieces with larger widths.
In order to limit the first connecting beam 42 and the second connecting beam 43 and avoid transition movement, as shown in fig. 2, a first limiting protrusion 50 is further disposed on the top of the second connecting beam 43, a second limiting protrusion 51 is disposed on the bottom of the overhanging end of the rack 46, and the first limiting protrusion 50 is opposite to the second limiting protrusion 51. Similarly, the improvement of the present invention in the adjustment of the pressing device 2 in the forward-backward direction can be applied to an existing manual press either alone or in combination with other improvements of the invention described in the present specification.
Claims (9)
1. A lifting adjustable press comprises a base (1) and a pressing device (2), wherein the pressing device (2) is erected above the base (1) through an inverted L-shaped supporting arm (3);
the method is characterized in that: the base (1) comprises a workbench and a plurality of lifting support legs (33) uniformly arranged at the bottom of the workbench, the lifting support legs (33) comprise support sleeves (34), support springs (35) and support rods (36) which are arranged up and down, the upper ends of the support sleeves (34) are fixedly connected with the bottom surface of the workbench, and the upper ends of the support rods (36) are arranged in the support sleeves (34) in a penetrating manner and form sliding fit with the support sleeves (34); the outer surface of the supporting sleeve (34) is provided with external threads, and the supporting sleeve (34) is sleeved with an adjusting sleeve (37); the adjusting sleeve (37) is in threaded fit with the supporting sleeve (34), a circle of first resisting ribs (38) are arranged on the circumferential surface of the lower end of the adjusting sleeve (37), and a circle of second resisting ribs (39) are arranged on the circumferential surface of the middle part of the supporting rod (36); the supporting spring (35) is sleeved outside the supporting sleeve (34) and the supporting rod (36) and is positioned between the first resisting edge (38) and the second resisting edge (39);
the pressing device (2) is provided with a connecting shaft (10), a pressure limiting mechanism is arranged on the connecting shaft (10), the connecting shaft (10) is composed of an upper half shaft (12) and a lower half shaft (13), and the pressure limiting mechanism comprises a plurality of vertical key grooves (14) which are uniformly arranged on the circumferential surface of the lower end of the upper half shaft (12) and have isosceles trapezoid-shaped cross sections; a vertical first blind hole (15) is formed in the upper end face of the lower half shaft (13); the first blind hole (15) is matched with the lower end of the upper half shaft (12), and the lower end of the upper half shaft (12) penetrates through the first blind hole (15) and is in running fit with the lower half shaft (13); a vertical strip-shaped through hole (16) penetrating through the inner surface and the outer surface of the lower half shaft (13) is formed in the side wall of one side of the first blind hole (15), a sliding block (17) matched with the strip-shaped through hole (16) is arranged in the strip-shaped through hole (16), and a connecting key (18) matched with the key groove (14) is arranged on the inner side of the sliding block (17);
the pressure limiting mechanism further comprises a mounting box (19), the mounting box (19) is sleeved outside the junction of the upper half shaft (12) and the lower half shaft (13), the mounting box (19) is fixedly connected with the lower half shaft (13), and the upper half shaft (12) penetrates through the top of the mounting box (19) and forms rotating fit with the mounting box (19); a transverse threaded short pipe (20) is further arranged on the side wall of the same side of the mounting box (19) and the sliding block (17), and a matched adjusting bolt (21) is arranged in the threaded short pipe (20); a second blind hole extending along the length direction of the adjusting bolt (21) is formed in the end face of the rod part of the adjusting bolt (21), a pressure limiting spring (22) and an ejector rod (23) are sequentially arranged in the second blind hole from inside to outside, and the ejector rod (23) and the second blind hole form sliding fit; a pressurizing linkage component is further arranged in the mounting box (19), and the sliding block (17) is matched with the ejector rod (23) through the pressurizing linkage component;
the pressurizing linkage assembly comprises a waist-shaped plate (24) and a lever (25) which are sequentially arranged from top to bottom, and the middle part of the waist-shaped plate (24) and the middle part of the lever (25) are respectively hinged with the side wall of the mounting box (19) through a first hinged shaft and a second hinged shaft; the upper part and the lower part of the waist-shaped plate (24) are respectively provided with a connecting pin (26); a first vertical strip-shaped pin hole (27) is formed in one outward side of the sliding block (17), and a second strip-shaped pin hole (28) extending along the length direction of the lever (25) is formed in the upper end of the lever (25); the first strip-shaped pin hole (27) and the second strip-shaped pin hole (28) are matched with the connecting pin (26), the connecting pin (26) positioned at the upper part of the waist-shaped plate (24) is inserted into the first strip-shaped pin hole (27), and the connecting pin (26) positioned at the lower part of the waist-shaped plate (24) is inserted into the second strip-shaped pin hole (28); the lower end of the lever (25) is contacted with the mandril (23).
2. The lift adjustable press of claim 1, wherein: the mounting box (19) is composed of a box body and a box cover at the top of the box body; a circle of connecting edges (29) are correspondingly arranged on the peripheral surface of the top of the box body and the peripheral surface of the bottom of the box cover, and the box body is connected with the connecting edges (29) of the box cover through bolts; the circumferential surface of the upper half shaft (12) is also provided with a circle of axial limiting ribs (30), and the axial limiting ribs (30) are positioned between the box cover and the top of the lower half shaft (13).
3. The lift adjustable press of claim 2, wherein: the periphery of the lower half shaft (13) is provided with a circle of fixed edge (31), the fixed edge (31) is located in the box body, and the bottom surface of the box body is connected with the fixed edge (31) through a bolt.
4. The lift adjustable press of claim 3, wherein: the end surface of one end of the ejector rod (23) far away from the pressure limiting spring (22) is spherical.
5. The lift adjustable press of claim 4, wherein: one surface of the lower end of the lever (25) facing the ejector rod (23) is provided with a contact table (32), and an arc-shaped concave part is arranged on the contact table (32).
6. The lift adjustable press of claim 5, wherein: the lower end of the supporting rod (36) is provided with a supporting disc (40), and the bottom surface of the supporting disc (40) is provided with a rubber wear-resistant layer.
7. The lift adjustable press of claim 6, wherein: the workstation is squarely, the quantity of lift supporting leg (33) is four, and is located four edges of workstation bottom surface respectively.
8. The lift adjustable press of claim 7, wherein: and the upper end of the support sleeve (34) is provided with a connecting disc (41), and the connecting disc (41) is connected with the workbench through a bolt.
9. The lift adjustable press of claim 8, wherein: the pressing device (2) comprises a vertical mounting cylinder (4) fixedly connected with the supporting arm (3) and a screw rod (5), a central hole in the mounting cylinder (4) is square, a square ejection column (6) matched with the central hole is arranged in the central hole, and the ejection column (6) is in sliding fit with the mounting cylinder (4); the lower end of the top column (6) extends out of the mounting cylinder (4) and is fixedly connected with the pressure head (7), and a vertical threaded hole is formed in the upper section of the top column (6); the lower section of the screw rod (5) penetrates through the threaded hole and is in threaded fit with the top column (6), the upper end of the screw rod (5) is provided with a limiting disc (8), and the upper end of the mounting cylinder (4) is provided with an end cover (9); the limiting disc (8) is positioned between the end cover (9) and the top of the mounting cylinder (4), and the end cover (9) is connected with the mounting cylinder (4) through bolts; the center of the top surface of the limiting disc (8) is provided with a connecting shaft (10), and the upper end of the connecting shaft (10) penetrates out of the end cover (9) and is connected with an adjusting hand wheel (11).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910245277.3A CN109822962B (en) | 2019-03-28 | 2019-03-28 | Lifting adjustable pressure machine |
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| CN201910245277.3A CN109822962B (en) | 2019-03-28 | 2019-03-28 | Lifting adjustable pressure machine |
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| CN109822962A CN109822962A (en) | 2019-05-31 |
| CN109822962B true CN109822962B (en) | 2020-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111168624B (en) * | 2020-02-22 | 2024-05-17 | 上海阿为特精密机械股份有限公司 | Small-size adjustable press |
| CN112170665B (en) * | 2020-09-06 | 2023-08-25 | 安徽誉林汽车部件有限公司 | Double-head press riveting tool and method for bushing of automotive suspension system |
| CN116207936B (en) * | 2023-03-27 | 2023-09-01 | 丽水市信毅单向器有限公司 | Processing technology of new energy high-power motor rotor shaft |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1103182A (en) * | 1912-07-15 | 1914-07-14 | William E Elliott | Arbor-press. |
| DE2209991A1 (en) * | 1972-03-02 | 1973-09-13 | Fahr Ag Maschf | STAMP BRIQUETTE PRESS, PREFERABLY TWIN-PUSH CRANK PRESS FOR BRIQUETTING GRAINY AND / OR FIBER AGRICULTURAL PRODUCTS, IN PARTICULAR GREEN FORAGE |
| SU919902A1 (en) * | 1976-12-07 | 1982-04-15 | Воронежский лесотехнический институт | Mechanical press |
| CN1021893C (en) * | 1989-07-08 | 1993-08-25 | 常州柴油机厂寨桥分厂 | Two-way overload clutch type quick clamping bench vice |
| JPH10249599A (en) * | 1997-03-07 | 1998-09-22 | Takeshita Sangyo Kk | Press machine |
| CN101474879B (en) * | 2009-01-20 | 2011-05-04 | 山东理工大学 | Driving device of screw press |
| RU2419545C2 (en) * | 2009-07-20 | 2011-05-27 | Государственное образовательное учреждение высшего профессионального образования "Орловский государственный технический университет" (ОрелГТУ) | Crank-operated press overload protection device |
| CN105196588B (en) * | 2015-10-09 | 2016-09-14 | 江阴江顺精密机械零部件有限公司 | Hand press |
| CN207889197U (en) * | 2017-12-29 | 2018-09-21 | 长春仁实光电科技有限公司 | A kind of forcing press supporting table |
| CN208067038U (en) * | 2018-04-03 | 2018-11-09 | 黄石恒盛科技发展有限公司 | A kind of compressor copper pipe pipe bender |
| CN208341554U (en) * | 2018-06-13 | 2019-01-08 | 新昌县盛南建材有限公司 | A kind of stamping equipment of adjustable hardware processing |
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