CN111873536A - Prevent punching machine of excessive pressure damage - Google Patents
Prevent punching machine of excessive pressure damage Download PDFInfo
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- CN111873536A CN111873536A CN202010767944.7A CN202010767944A CN111873536A CN 111873536 A CN111873536 A CN 111873536A CN 202010767944 A CN202010767944 A CN 202010767944A CN 111873536 A CN111873536 A CN 111873536A
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- 238000009434 installation Methods 0.000 claims description 27
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- 241001330002 Bambuseae Species 0.000 claims description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 10
- 239000011425 bamboo Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims 9
- 239000000758 substrate Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 239000000463 material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D55/00—Safety devices protecting the machine or the operator, specially adapted for apparatus or machines dealt with in this subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/02—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by lever mechanism
- B30B1/04—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by lever mechanism operated by hand or foot
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Abstract
The invention relates in particular to a hand punch. Aims to provide a stamping machine which can provide effective pressure limiting protection and prevent overpressure damage. The technical scheme adopted by the invention is as follows: a punching machine capable of preventing overpressure damage comprises a base arranged on a supporting bottom foot, wherein a vertical and square mounting cylinder is arranged at the center of the base, a matched square column is arranged in the mounting cylinder, a fixed disc is arranged on the top surface of the square column, and a lower die is arranged on the fixed disc; the side wall of the square column is connected with the mounting cylinder through a pressure limiting component. The invention can effectively limit the pressure of the punching machine and prevent the damage to the workpiece caused by overlarge pressure.
Description
Technical Field
The invention relates to the technical field of presses, in particular to a manual punching machine.
Background
The manual punching machine is a device for simply processing workpieces such as metal sheets, plastic sheets and the like by punching, bending and the like, and the manual punching machine can be divided into a screw type, a lever type, a cam type, a rack and pinion type and the like according to a power transmission mode, wherein the lever type manual punching machine is widely used in the industry due to simple structure and stable operation. However, the conventional lever type manual punching machine has certain defects in the using process: 1. the stamping die is comprehensively influenced by factors such as material composition of a workpiece, a forming shape and the like, the workpiece needs to be maintained under a certain pressure when being stamped, and indexes such as strength and the like of the workpiece are damaged when the pressure is too high, so that the quality of a final product is reduced; therefore, pressure limiting protection of the stress on the workpiece is very necessary for the manual punching machine. Meanwhile, because different workpieces have different requirements on pressure, it is also very important how to provide stable pressure limiting protection and how to conveniently and quickly adjust pressure limiting parameters. 2. Conventional lever-type hand presses, which are generally capable of applying limited pressures, are not suitable for machining workpieces with high pressure requirements, such as: thick steel plate, high strength steel plate, etc. If the pressure is increased, the traditional method is to extend the lever arm, but for the manual punch with miniaturization, portability and flexibility, the overlong lever arm inevitably affects the above characteristics.
Disclosure of Invention
The invention aims to provide a punching machine capable of providing effective pressure limiting protection and preventing overvoltage damage.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows: a punching machine capable of preventing overvoltage damage comprises a base arranged on a supporting bottom foot, wherein a top frame is arranged above the base, and the base and the top frame are fixedly connected through a connecting column; the top frame is provided with a lever type pressure mechanism and a punch used for installing an upper die, and the base is provided with a lower die; the punch can move downwards under the driving of the lever type pressure mechanism to drive the upper die to be downwards closed to form the punching of the workpiece;
a vertical and square mounting cylinder is arranged in the center of the base, a matched square column is arranged in the mounting cylinder, a fixed disc is arranged on the top surface of the square column, and the lower die is arranged on the fixed disc; the side wall of the square column is connected with the mounting cylinder through a pressure limiting assembly;
a plurality of vertical installation cavities are arranged in the side wall of the installation cylinder, a first transverse hole is arranged on one side, facing the square column, of the upper part of each installation cavity, and the first transverse hole penetrates through the installation cavities and the inner hole of the installation cylinder; a second transverse hole is formed in one side of the lower portion of the mounting cavity, which is back to the square column; a plurality of hemispherical clamping holes are formed in the square column corresponding to the first transverse holes;
the pressure limiting assembly comprises a mushroom head, the rod part of the mushroom head penetrates through the first transverse hole and is in sliding fit with the first transverse hole, and the end part of the mushroom head is in a hemispherical shape matched with the clamping hole and extends into the clamping hole; a top block and a supporting spring are sequentially arranged in the second transverse hole along the direction far away from the mounting cavity, and the top block and the second transverse hole form sliding fit; the pressure limiting mechanism further comprises a swing rod, and the upper end of the swing rod is hinged with a second hinge seat arranged at the top of the mounting cavity; the positions of the swing rod, which are opposite to the first transverse hole and the second transverse hole, are respectively provided with a first lug and a second lug, and the first lug and the second lug are respectively contacted with the mushroom head and the ejector block.
Preferably, the second transverse hole is a through hole penetrating through the outer surface of the mounting cylinder, and the outward section of the second transverse hole is a threaded section and is adapted with an adjusting bolt; the supporting spring is located between the end face of the adjusting bolt and the top block.
Preferably, the second transverse hole is a through hole penetrating through the outer surface of the mounting cylinder, a telescopic pin is adapted in an outward section of the second transverse hole, and the supporting spring is located between the inner end surface of the telescopic pin and the top block; an obliquely upward groove is formed in the outer end face of the telescopic pin; the mounting cylinder is further sleeved with an adjusting cylinder, the adjusting cylinder is in threaded connection with the mounting cylinder, a horn-shaped skirt edge is further arranged on the lower portion of the adjusting cylinder, and the bottom surface of the skirt edge is an inclined surface matched with the groove and is in contact with the groove.
Preferably, one side of the adjusting cylinder is fixedly provided with an adjusting rod extending along the radial direction of the adjusting cylinder.
Preferably, the first lug and the second lug are arc-shaped, and the end face of the mushroom head contacted with the first lug and the end face of the top block contacted with the second lug are both concave arc-shaped faces.
Preferably, the clamping holes on the square column are provided with multiple groups, and the multiple groups of clamping holes are uniformly distributed on the square column from top to bottom.
Preferably, the mounting cylinder is composed of an upper section and a lower section, and the upper section and the lower section of the mounting cylinder form flange connection.
Preferably, the lever type pressure mechanism comprises four vertical installation upright columns arranged on the top surface of the top frame in a matrix shape, and a plurality of layers of lever type pressure components uniformly sleeved on the installation upright columns along the vertical direction;
the lever type pressure component comprises a square base plate, four corners of the base plate are respectively provided with a vertical sleeve which is matched with the mounting upright posts, and the four vertical sleeves are sleeved on the four mounting upright posts through the sleeves; the lever type pressure component also comprises a transmission cross rod and a transmission vertical rod, a cross beam is arranged between the front side edge and the rear side edge of the base plate, and the transmission vertical rod is installed on the cross beam and can move along the up-and-down direction; a first hinging seat is further arranged on one side edge of the left side edge and the right side edge of the base plate, one end of the transmission cross rod is hinged with the first hinging seat, and the middle section of the transmission cross rod is in transmission connection with the upper end of the transmission vertical rod;
the free end of the transmission cross rod of the lever type pressure component positioned on the uppermost layer is provided with a section of handle section in an extending way; the lower end of a transmission upright rod of the lever type pressure component positioned at the lowermost layer is in transmission connection with the punch; the hinge positions of the transmission cross rods of the adjacent two layers of lever type pressure components on the base plate are opposite, and the lower ends of the transmission vertical rods of the lever type pressure components on the upper layer are in transmission connection with the free ends of the transmission cross rods of the lever type pressure components on the lower layer.
Preferably, the center of the cross beam is provided with a vertical guide pipe, the transmission upright stanchion comprises a guide section which is arranged in the guide pipe and forms sliding fit with the guide pipe, and U-shaped forks which are arranged at the upper end and the lower end of the guide section, and the end parts of the U-shaped forks are provided with supporting plates; contact rods are symmetrically arranged on two sides of the transmission cross rod and are in contact with the supporting plate.
Preferably, the two ends of the cross beam are provided with sliding cards, the width of a bayonet of each sliding card is matched with the thickness of the substrate, and the sliding cards are provided with first fastening bolts; the sliding cards are clamped on the front side and the rear side of the substrate and are locked with the substrate through first fastening bolts;
the transmission cross rod is provided with a sliding sleeve, the sliding sleeve and the transmission cross rod form sliding fit, and the sliding sleeve and the transmission cross rod form locking through a second fastening bolt; the contact rods are fixedly arranged on two sides of the sliding sleeve.
The beneficial effects of the invention are concentrated and expressed as follows: can effectively limit the pressure of the punching machine and prevent the workpiece from being damaged due to overlarge pressure. Particularly, in the using process, under the influence of the acting force of the supporting spring, the top block is abutted against the lower end of the swing rod through the second bump, so that the upper end of the swing rod is driven to abut against the mushroom head through the first bump, and the end part of the mushroom head extends into the clamping hole, so that the square column can be normally supported by the mounting cylinder. When the pressure is too high, the elastic force of the supporting spring is not enough to limit the position of the mushroom head, at the moment, the mushroom head is pressed back into the first transverse hole, the square column can continue to move downwards, and the effect of limiting the pressure is achieved substantially. Compared with the traditional manual lever type punching machine, the invention can effectively prevent the workpiece from being damaged and improve the overall quality of the workpiece. In addition, the invention is very convenient for quickly adjusting the upper limit of the pressure limit.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the lever pressure assembly;
FIG. 3 is a schematic structural view of a cross beam;
FIG. 4 is a schematic structural view of a pallet;
FIG. 5 is a top view of the guide tube;
FIG. 6 is a schematic structural view of a voltage limiting assembly;
FIG. 7 is a schematic diagram of a preferred embodiment of the structure shown in FIG. 6;
fig. 8 is an enlarged view of a portion a of fig. 6.
Detailed Description
With reference to the manual lever type punch press shown in fig. 1 to 8, the same as the conventional manual punch press is that the invention also includes a base 2 disposed on the support foot 1, a top frame 3 is disposed above the base 2, and the base 2 and the top frame 3 are fixedly connected through a connecting column 4. The top frame 3 may be square, circular, etc. The top frame 3 is provided with a lever type pressure mechanism and a punch 5 used for installing an upper die 6, and the base 2 is provided with a lower die 7. Usually, the punch 5 is mounted on the top frame 3 in a manner that it can slide up and down, for example: the punch 5 is provided with a guide rod which is arranged in a guide hole on the top frame 3 in a penetrating way to slide up and down, the structure is simple and conventional, and the detailed description is omitted in the invention. The same top frame 3 is usually provided with an elastic component for driving the punch 5 to return upwards, that is, after the punch 5 is formed by punching, the elastic component drives the punch 5 to return upwards. The elastic component may be a return spring disposed on the guide rod, or a structure for performing the same function, which is also an option in the conventional art and will not be described in the present invention. The punch 5 can move downwards under the driving of the lever type pressure mechanism, and drives the upper die 6 to close the die downwards to punch a workpiece.
Compared with the traditional manual punching machine, the invention mainly has the following two technical improvements, can adapt to larger pressure requirements and has the function of pressure limiting protection.
In order to provide a larger upper limit of pressure, the lever type pressure mechanism comprises four vertical mounting upright posts 8 arranged on the top surface of the top frame 3 in a matrix shape, and a plurality of layers of lever type pressure components uniformly sleeved on the mounting upright posts 8 along the vertical direction. Each layer of lever type pressure component has a pressure amplification effect, and the pressure total upper limit is lifted by assembling the plurality of layers of lever type pressure components.
The lever type pressure component comprises a square base plate 12, wherein four corners of the base plate 12 are respectively provided with a vertical sleeve 9 matched with the mounting upright posts 8, and the four vertical sleeves 9 are sleeved on the four mounting upright posts 8 through the sleeves 9. In order to ensure the stability of the installation of the sleeve 9, the installation column 8 can be generally configured as a threaded column, and the upper end is adapted with a locking nut 25, and the sleeve 9 of the multi-layer lever type pressure assembly is locked on the installation column 8 through the locking nut 25. On the basis, in order to further improve the stability, a rubber gasket 26 is arranged between the sleeves 9 of two adjacent layers of the lever type pressure components, and the increase of the rubber gasket 26 can also prevent the sleeves 9 from being mutually worn. The multiple sleeves 9 position the substrate 12 together, so that the substrate 12 is ensured not to shake, and the stability is good.
The lever type pressure component further comprises a transmission cross rod 10 and a transmission vertical rod 11, a cross beam 13 is arranged between the front side edge and the rear side edge of the base plate 12, and the transmission vertical rod 11 is installed on the cross beam 13 and can move in the up-and-down direction. The power is transmitted through the cooperation of the transmission cross rod 10 and the transmission vertical rod 11. As shown in fig. 2, a first hinge seat 14 is further disposed on one of the left and right sides of the base plate 12, one end of the transmission cross bar 10 is hinged to the first hinge seat 14, and the middle section of the transmission cross bar 10 is in transmission connection with the upper end of the transmission upright 11. Of course, a torsion spring for driving the transmission cross bar 10 to return upward may be further provided in the first hinge seat 14 in consideration of the return of the transmission cross bar 10.
As shown in fig. 1, for the convenience of operation, the free end of the transmission cross bar 10 of the lever type pressure assembly located at the uppermost layer is provided with a section of a handle section 15 in an extension. The lower end of a transmission upright rod 11 of the lever type pressure component positioned at the lowermost layer is in transmission connection with the punch 5. The hinged positions of the transmission cross bars 10 of the adjacent two layers of lever type pressure components on the base plate 12 are opposite, and the lower ends of the transmission upright bars 11 of the lever type pressure components on the upper layer are in transmission connection with the free ends of the transmission cross bars 10 of the lever type pressure components on the lower layer. The specific connection thereof can be designed according to the construction of the transmission upright 11, as will be explained in more detail below.
In the using process of the invention, a workpiece is placed on the lower die 7, the handle section 15 is pulled down by hands, the transmission cross rod 10 and the transmission upright rod 11 sequentially transmit power downwards, and the overall pressure can be greatly improved due to repeated pressurization of a plurality of lever-type structures in the power transmission process, and finally the punch 5 and the upper die 6 on the punch are driven to move downwards to be matched with the lower die 7, so that the processing of the workpiece is realized. Compared with the traditional mode, the invention can match different numbers of lever type pressure components according to the actual situation, theoretically, the more the number of the lever type pressure components is, the larger the upper limit of the pressure which can be output by the lever type pressure components is, and the invention is very suitable for high-strength stamping. Meanwhile, the traditional mode that the length of the handle section 15 is increased and the length of the sleeve is increased on the handle section 15 is eliminated, so that the whole structure of the equipment is more compact and reasonable.
In practical design, the most conventional transmission upright rod 11 is a vertical rod, two ends of the vertical rod are directly contacted with the transmission cross rod 10 to realize transmission, grooves can be arranged at the upper end and the lower end of the vertical rod to facilitate the contact of the vertical rod and the transmission cross rod 10, and in this case, the transmission connection of the vertical rod and the punch 5 can be realized by directly contacting the lower end of the vertical rod with the upper end of the punch 5. Of course, in order to achieve better power transmission, it is better to make the invention that, as shown in fig. 3, the center of the cross beam 13 is provided with a vertical guide tube 16, the transmission upright 11 comprises a guide section 17 which is installed in the guide tube 16 and forms a sliding fit with the guide tube 16, and U-shaped forks 18 which are arranged at the upper and lower ends of the guide section 17, and the ends of the U-shaped forks 18 are provided with supporting plates 19. Contact rods 20 are symmetrically arranged on two sides of the transmission cross bar 10, and the contact rods 20 are in contact with the supporting plate 19. In this way, the force of the transmission cross bar 10 is transmitted to the supporting plate 19 through the contact rod 20, then transmitted to the U-shaped fork 18 through the supporting plate 19, then transmitted to the guide section 17, and finally transmitted to the lower transmission cross bar 10 through the U-shaped fork 18, the supporting plate 19 and the contact rod 10. Compared with the straight-bar type transmission upright rod 11, the structure has more stable stress and smoother power transmission. The blade 19 is generally arcuate as shown in figure 4.
In order to ensure that the U-shaped fork 18 and the guide tube 16 do not interfere with each other during the up-and-down movement of the transmission vertical rod 11, as shown in fig. 5, two side walls of the guide tube 16 opposite to the U-shaped fork 18 are provided with relief holes 21, and the side walls of the guide tube 16 at two sides of the relief holes 21 extend outwards to form guide portions 22.
In addition, in order to further improve the flexibility of the pressure adaptation of the present invention, it is better that the position of the transmission vertical rod 11 of the present invention can be adjusted in the projection of the length direction of the transmission cross rod 10, for this purpose, as shown in fig. 2, both ends of the cross beam 13 are provided with slide cards 23, the bayonet width of the slide cards 23 is matched with the thickness of the base plate 12, and the slide cards 23 are provided with first fastening bolts. The sliding card 23 is clamped on the front side and the rear side of the substrate 12 and locked with the substrate 12 by a first fastening bolt. By changing the position of the cross beam 13, the position of the transmission upright rod 11 is substantially adjusted, and the use is very convenient. Of course, the position of the contact rod 20 on the drive rail 10 should also be adjustable after changing the position of the drive upright 11, which is already adapted. Therefore, the transmission cross bar 10 is provided with the sliding sleeve 24, the sliding sleeve 24 is in sliding fit with the transmission cross bar 10, and is locked with the transmission cross bar 10 through the second fastening bolt. The contact rods 20 are fixedly arranged on both sides of the sliding sleeve 24.
From a second aspect, the lower die 7 of the base 2 of the present invention is mounted in a specific configuration for effective pressure limiting protection of the workpiece. As shown in fig. 6, a vertical and square mounting cylinder 27 is arranged at the center of the base 2, a matching square column 28 is arranged in the mounting cylinder 27, a fixed disc 29 is arranged on the top surface of the square column 28, and the lower die 7 is arranged on the fixed disc 29. The side wall of the square column 28 is connected with the mounting cylinder 27 through a pressure limiting component.
Referring to fig. 6 and 8, a plurality of vertical installation cavities 30 are provided in the side wall of the installation cylinder 27, a first transverse hole 31 is provided on one side of the upper portion of the installation cavity 30, which faces the square column 28, and the first transverse hole 31 penetrates through the installation cavity 30 and the inner hole of the installation cylinder 27. A second transverse hole 32 is formed in the lower portion of the mounting cavity 30 on the side facing away from the square column 28. A plurality of hemispherical clamping holes 33 are formed in the square column 28 corresponding to the first transverse holes 31. Of course, in consideration of the processing problem of the installation cavity 30, the installation cylinder 27 according to the present invention may be composed of an upper section and a lower section, and the upper section and the lower section of the installation cylinder 27 are flange-connected, but it is also possible to adopt other methods to construct the assembly structure.
The pressure limiting assembly comprises a mushroom head 34, a rod part of the mushroom head 34 penetrates through the first transverse hole 31 and forms sliding fit with the first transverse hole 31, and the end part of the mushroom head 34, namely the right end in fig. 8, is in a hemispherical shape matched with the clamping hole 33 and extends into the clamping hole 33. The second transverse hole 32 is internally provided with a top block 35 and a supporting spring 36 in sequence along the direction far away from the mounting cavity 30, and the top block 35 and the second transverse hole 32 form sliding fit. The pressure limiting mechanism further comprises a swing rod 37, and the upper end of the swing rod 37 is hinged to a second hinge seat 38 arranged at the top of the mounting cavity 30. The positions of the swing link 37 opposite to the first transverse hole 31 and the second transverse hole 32 are respectively provided with a first lug 39 and a second lug 40, and are respectively contacted with the mushroom head 34 and the ejector block 35 through the first lug 39 and the second lug 40. In order to ensure the stability of the contact and prevent the occurrence of the local over-stress, the first protrusion 39 and the second protrusion 40 may be arc-shaped, and the end surface of the mushroom head 34 contacting the first protrusion 39 and the end surface of the top block 35 contacting the second protrusion 40 are both concave arc-shaped.
In the using process of the invention, under the influence of the acting force of the supporting spring 36, the top block is abutted against the lower end of the swing rod 37 through the second bump 40, so as to drive the upper end of the swing rod 37 to abut against the mushroom head 34 through the first bump 39, and at the moment, the end part of the mushroom head 34 extends into the clamping hole 33, so that the normal bearing of the mounting cylinder 27 on the square column 28 can be realized, and because the swing rod 37 amplifies the acting force of the supporting spring 36, the invention can effectively reduce the requirement on the elastic force of the supporting spring 36, and further improve the stability under the normal working condition. When the pressure is too high, the elastic force of the supporting spring 36 is not enough to limit the position of the mushroom head 34, and the mushroom head 34 is pressed back into the first transverse hole 31, the square column 28 can continue to move downwards, and the effect of limiting the pressure is achieved. Compared with the traditional manual lever type punching machine, the invention can effectively prevent the workpiece from being damaged and improve the overall quality of the workpiece.
Of course, considering the different pressure limiting requirements of different workpieces, the present invention is preferably adjustable in pressure limiting force to achieve the above-mentioned objectives. Alternatively, as shown in fig. 8, the second transverse hole 32 is a through hole penetrating to the outer surface of the mounting cylinder 27, and a section of the second transverse hole 32 facing outward is a threaded section and is adapted with an adjusting bolt 41. The support spring 36 is located between the end surface of the adjusting bolt 41 and the top block 35. The compression ratio of the supporting spring 36 is changed through the adjusting bolt 41, so that the pressure limiting adjustment is realized, but the pressure limiting adjustment is realized in such a way that the adjustment consistency of each adjusting bolt 41 needs to be considered, and generally speaking, the requirement on workers is high.
For this purpose, as shown in fig. 7, the second transverse hole 32 may be a through hole penetrating to the outer surface of the mounting cylinder 27, a telescopic pin 42 is fitted into an outward section of the second transverse hole 32, and the support spring 36 is located between an inner end surface of the telescopic pin 42 and the top block 35. The outer end face of the telescopic pin 42 is provided with an obliquely upward bevel. The installation section of thick bamboo 27 is outer still to be equipped with and to adjust a section of thick bamboo 43, adjust a section of thick bamboo 43 and installation section of thick bamboo 27 threaded connection, the lower part of adjusting a section of thick bamboo 43 still is provided with tubaeform shirt rim 44, the bottom surface of shirt rim 44 is for the inclined plane with groove matched with to contact with the groove. The adjustment cylinder 43 is driven to change the up-down position on the mounting cylinder 27 by rotating, the skirt 44 of the adjustment cylinder is used for extruding the telescopic pin 42, and finally the compression ratio of the supporting spring 36 is changed through the telescopic pin 42, so that the adjustment is more synchronous. In order to facilitate the rotation of the adjusting cylinder 43, an adjusting rod 45 extending along a radial direction of the adjusting cylinder 43 is fixedly arranged on one side of the adjusting cylinder 43, and of course, a plurality of adjusting rods 45 may be arranged.
Besides, for different workpieces, because of the height difference, in order to ensure the stability of the closing of the upper and lower molds, the height position of the lower mold 7 is preferably adjustable, and for this reason, it is preferable that a plurality of sets of the fastening holes 33 on the square column 28 are provided, and the plurality of sets of the fastening holes 33 are uniformly distributed on the square column 28 from top to bottom.
Claims (10)
1. The punching machine capable of preventing overvoltage damage comprises a base (2) arranged on a supporting bottom foot (1), wherein a top frame (3) is arranged above the base (2), and the base (2) and the top frame (3) are fixedly connected through a connecting column (4); a lever type pressure mechanism and a punch (5) used for installing an upper die (6) are arranged on the top frame (3), and a lower die (7) is arranged on the base (2); the punch (5) can move downwards under the driving of the lever type pressure mechanism to drive the upper die (6) to close the die downwards to punch a workpiece;
the method is characterized in that: a vertical and square mounting cylinder (27) is arranged at the center of the base (2), a square column (28) matched with the mounting cylinder (27) is arranged in the mounting cylinder (27), a fixed disc (29) is arranged on the top surface of the square column (28), and the lower die (7) is arranged on the fixed disc (29); the side wall of the square column (28) is connected with the mounting cylinder (27) through a pressure limiting component;
a plurality of vertical installation cavities (30) are arranged in the side wall of the installation cylinder (27), a first transverse hole (31) is formed in one side, facing the square column (28), of the upper portion of each installation cavity (30), and the first transverse hole (31) penetrates through the installation cavities (30) and the inner hole of the installation cylinder (27); a second transverse hole (32) is formed in one side, back to the square column (28), of the lower portion of the mounting cavity (30); a plurality of hemispherical clamping holes (33) are formed in the square column (28) corresponding to the first transverse holes (31);
the pressure limiting assembly comprises a mushroom head (34), the rod part of the mushroom head (34) penetrates through the first transverse hole (31) and is in sliding fit with the first transverse hole (31), and the end part of the mushroom head (34) is hemispherical and matched with the clamping hole (33) and extends into the clamping hole (33); a top block (35) and a supporting spring (36) are sequentially arranged in the second transverse hole (32) along the direction far away from the mounting cavity (30), and the top block (35) and the second transverse hole (32) form sliding fit; the pressure limiting mechanism further comprises a swing rod (37), and the upper end of the swing rod (37) is hinged to a second hinge seat (38) arranged at the top of the mounting cavity (30); the positions of the swing rod (37) opposite to the first transverse hole (31) and the second transverse hole (32) are respectively provided with a first lug (39) and a second lug (40), and the swing rod is respectively contacted with the mushroom head (34) and the ejector block (35) through the first lug (39) and the second lug (40).
2. The overpressure damage prevention die press as recited in claim 1, further comprising: the second transverse hole (32) is a through hole penetrating through the outer surface of the mounting cylinder (27), and an outward section of the second transverse hole (32) is a threaded section and is matched with an adjusting bolt (41); the supporting spring (36) is located between the end face of the adjusting bolt (41) and the top block (35).
3. The overpressure damage prevention die press as recited in claim 1, further comprising: the second transverse hole (32) is a through hole penetrating through the outer surface of the mounting cylinder (27), a telescopic pin (42) is matched in an outward section of the second transverse hole (32), and the supporting spring (36) is located between the inner end surface of the telescopic pin (42) and the top block (35); an oblique upward groove is formed in the outer end face of the telescopic pin (42); the installation section of thick bamboo (27) still overlap outward and be equipped with and adjust a section of thick bamboo (43), adjust a section of thick bamboo (43) and installation section of thick bamboo (27) threaded connection, the lower part of adjusting a section of thick bamboo (43) still is provided with tubaeform shirt rim (44), the bottom surface of shirt rim (44) is for the inclined plane with groove matched with to contact with the groove.
4. The overpressure damage prevention die press as recited in claim 3, further comprising: one side of the adjusting cylinder (43) is fixedly provided with an adjusting rod (45) extending along the radial direction of the adjusting cylinder.
5. The overpressure damage prevention die press as recited in claim 4, further comprising: the first bump (39) and the second bump (40) are arc-shaped, and the end face of the mushroom head (34) contacted with the first bump (39) and the end face of the top block (35) contacted with the second bump (40) are both concave arc faces.
6. The overpressure damage prevention die press as recited in claim 5, further comprising: the clamp holes (33) on the square column (28) are provided with multiple groups, and the multiple groups of clamp holes (33) are uniformly distributed on the square column (28) from top to bottom.
7. The overpressure damage prevention die press as recited in claim 6, further comprising: the mounting cylinder (27) is composed of an upper section and a lower section, and the upper section and the lower section of the mounting cylinder (27) are connected through flanges.
8. The overpressure damage prevention die press as recited in claim 7, further comprising: the lever type pressure mechanism comprises four vertical mounting upright posts (8) arranged on the top surface of the top frame (3) in a matrix shape, and a plurality of layers of lever type pressure components uniformly sleeved on the mounting upright posts (8) along the vertical direction;
the lever type pressure assembly comprises a square base plate (12), wherein four corners of the base plate (12) are respectively provided with a vertical sleeve (9) matched with the mounting upright posts (8), and the four vertical sleeves are sleeved on the four mounting upright posts (8) through the sleeves (9); the lever type pressure component further comprises a transmission cross rod (10) and a transmission vertical rod (11), a cross beam (13) is arranged between the front side edge and the rear side edge of the base plate (12), and the transmission vertical rod (11) is installed on the cross beam (13) and can move in the vertical direction; a first hinge seat (14) is further arranged on one side edge of the left side edge and the right side edge of the base plate (12), one end of the transmission cross rod (10) is hinged to the first hinge seat (14), and the middle section of the transmission cross rod (10) is in transmission connection with the upper end of the transmission vertical rod (11);
the free end of the transmission cross rod (10) of the lever type pressure component positioned at the uppermost layer is provided with a section of handle section (15) in an extending way; the lower end of a transmission upright rod (11) of the lever type pressure component positioned at the lowermost layer is in transmission connection with the punch (5); the hinged positions of the transmission cross rods (10) of the adjacent two layers of lever type pressure components on the base plate (12) are opposite, and the lower ends of the transmission upright rods (11) of the lever type pressure components on the upper layer are in transmission connection with the free ends of the transmission cross rods (10) of the lever type pressure components on the lower layer.
9. The overpressure damage prevention die press as recited in claim 8, further comprising: a vertical guide pipe (16) is arranged in the center of the cross beam (13), the transmission vertical rod (11) comprises a guide section (17) which is arranged in the guide pipe (16) and forms sliding fit with the guide pipe (16), and U-shaped forks (18) which are arranged at the upper end and the lower end of the guide section (17), and supporting plates (19) are arranged at the end parts of the U-shaped forks (18); contact rods (20) are symmetrically arranged on two sides of the transmission cross rod (10), and the contact rods (20) are in contact with the supporting plate (19).
10. The overpressure damage prevention die press as recited in claim 9, further comprising: sliding cards (23) are arranged at two ends of the cross beam (13), the width of a bayonet of each sliding card (23) is matched with the thickness of the base plate (12), and a first fastening bolt is arranged on each sliding card (23); the sliding clamps (23) are clamped on the front side and the rear side of the base plate (12) and locked with the base plate (12) through first fastening bolts;
the transmission cross rod (10) is provided with a sliding sleeve (24), the sliding sleeve (24) is in sliding fit with the transmission cross rod (10) and is locked with the transmission cross rod (10) through a second fastening bolt; the contact rods (20) are fixedly arranged on two sides of the sliding sleeve (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767944.7A CN111873536B (en) | 2020-08-03 | 2020-08-03 | Prevent punching machine of excessive pressure damage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010767944.7A CN111873536B (en) | 2020-08-03 | 2020-08-03 | Prevent punching machine of excessive pressure damage |
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| Publication Number | Publication Date |
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| CN111873536A true CN111873536A (en) | 2020-11-03 |
| CN111873536B CN111873536B (en) | 2021-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010767944.7A Active CN111873536B (en) | 2020-08-03 | 2020-08-03 | Prevent punching machine of excessive pressure damage |
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|---|---|---|---|---|
| KR20100074577A (en) * | 2008-12-24 | 2010-07-02 | 대산공업 주식회사 | Press mold for mutually combining the edge of the upper and lower body that comprises ventilation muffler of vehicles |
| CN106739132A (en) * | 2016-12-11 | 2017-05-31 | 安徽海拓志永智能装备股份有限公司 | A kind of pressure machine overloading protection device |
| CN107309362A (en) * | 2017-08-28 | 2017-11-03 | 河南鑫安利安全科技股份有限公司 | Pressing equipment safety device |
| CN109084165A (en) * | 2018-10-31 | 2018-12-25 | 江苏铭格锻压设备有限公司 | A kind of hydraulic press with defencive function |
| CN109878130A (en) * | 2019-03-28 | 2019-06-14 | 徐鑫珍 | A kind of pressure-limiting hand press machine |
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2020
- 2020-08-03 CN CN202010767944.7A patent/CN111873536B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100074577A (en) * | 2008-12-24 | 2010-07-02 | 대산공업 주식회사 | Press mold for mutually combining the edge of the upper and lower body that comprises ventilation muffler of vehicles |
| CN106739132A (en) * | 2016-12-11 | 2017-05-31 | 安徽海拓志永智能装备股份有限公司 | A kind of pressure machine overloading protection device |
| CN107309362A (en) * | 2017-08-28 | 2017-11-03 | 河南鑫安利安全科技股份有限公司 | Pressing equipment safety device |
| CN109084165A (en) * | 2018-10-31 | 2018-12-25 | 江苏铭格锻压设备有限公司 | A kind of hydraulic press with defencive function |
| CN109878130A (en) * | 2019-03-28 | 2019-06-14 | 徐鑫珍 | A kind of pressure-limiting hand press machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111873536B (en) | 2021-11-09 |
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Effective date of registration: 20211022 Address after: 312000 north side of the second floor, No.9 Da Da Road, Shengzhou Economic Development Zone, Shaoxing City, Zhejiang Province Applicant after: SHENGZHOU JINGYE ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 312000 No.28 Ruokeng village, Beizhang Town, Shengzhou City, Shaoxing City, Zhejiang Province Applicant before: Yu Xingzheng |
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Effective date of registration: 20220824 Address after: 116300 Pantun village, Yuantai Town, Wafangdian City, Dalian City, Liaoning Province Patentee after: DALIAN YESHENGDA METAL PRODUCTS CO.,LTD. Address before: 312000 north side of the second floor, No.9 Da Da Road, Shengzhou Economic Development Zone, Shaoxing City, Zhejiang Province Patentee before: SHENGZHOU JINGYE ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A Stamping Machine for Preventing Overpressure Damage Granted publication date: 20211109 Pledgee: Bank of China Limited Dalian Wafangdian Branch Pledgor: DALIAN YESHENGDA METAL PRODUCTS CO.,LTD. Registration number: Y2024980003641 |
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