CN212238878U

CN212238878U - Continuous stamping equipment of thin wall reed

Info

Publication number: CN212238878U
Application number: CN202020929332.9U
Authority: CN
Inventors: 张绪
Original assignee: Zunyi Lisheng Machinery Processing Co ltd
Current assignee: Zunyi Lisheng Machinery Processing Co ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2020-12-29
Anticipated expiration: 2030-05-27

Abstract

The application relates to sheet metal stamping forming equipment, and particularly discloses thin-wall reed continuous stamping equipment, which comprises a base and an upper cross beam, wherein the upper cross beam is fixed on the base; a sliding groove is transversely arranged on the base, and a lower die is connected in the sliding groove in a sliding manner; a stamping die is arranged above the lower die and is in sliding connection with the upper cross beam; the upper cross beam is rotatably connected with a rotating shaft, the rotating shaft is arranged along the longitudinal direction in the axial direction, the rotating shaft is in keyed connection with a driving gear, the side surface of the stamping die is fixedly provided with a driving rack, and the driving gear is meshed with the driving rack; the rotating shaft is rotatably connected with an intermediate gear through a one-way bearing, and the intermediate gear is rotatably connected with the upper cross beam; the stamping die moves upwards, and the rotating shaft transmits torque to the intermediate gear and drives the intermediate gear to rotate; the lower die is provided with a transmission rack which is arranged along the transverse direction, and the middle gear is meshed with the transmission rack. The equipment can continuously punch the blank without repositioning the blank, so that the processing efficiency can be improved.

Description

Continuous stamping equipment of thin wall reed

Technical Field

The utility model relates to a sheet metal stamping forming equipment, concretely relates to continuous stamping equipment of thin wall reed.

Background

At present, known punching equipment consists of a press, a punching die, a power unit and the like. The press machine is classified into a mechanical type, a hydraulic type, a pneumatic type, and the like according to power. The same hole type is adopted, the holes are punched on different materials, different equipment is required to be used, and the input cost of the equipment is different. The existing punching equipment is basically large-scale equipment, the power of the existing punching equipment is high, when the existing punching equipment is used for punching holes with small diameters on a thin plate or a narrow strip, the residual power of the equipment is wasted, high equipment cost investment is generated, the equipment maintenance cost is increased, and the thin plate or the narrow strip is easy to bend and deform from the punching position to affect the product quality.

The existing large punching machine is generally a single-arm open punching machine modified by a turret punch press or a punch press. The punching machine types have the advantages that the number of punched holes finished at one time is small, the covering width is narrow, when a steel plate with a wide breadth is punched, the steel plate needs to be moved back and forth or turned around for punching, and the steel plate needs to be repositioned, so that the machining efficiency is low, and the labor intensity is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a continuous stamping equipment of thin wall reed to carry out continuous punching press to the blank under the condition that need not to carry out the relocation to the blank, improve machining efficiency.

The thin-wall reed continuous stamping equipment comprises a rack, wherein the rack comprises a base and an upper cross beam, and the upper cross beam is fixed on the base; the method is characterized in that: a sliding groove is transversely arranged on the base, and a lower die is connected in the sliding groove in a sliding manner; a stamping die is arranged above the lower die, is in sliding connection with the upper cross beam and is driven by a driving oil cylinder to slide along the vertical direction; the upper cross beam is rotatably connected with a rotating shaft, the rotating shaft is arranged along the longitudinal direction in the axial direction, the rotating shaft is in keyed connection with a driving gear, the side surface of the stamping die is fixedly provided with a driving rack, and the driving gear is meshed with the driving rack; the rotating shaft is rotatably connected with an intermediate gear through a one-way bearing, and the intermediate gear is rotatably connected with the upper cross beam; the stamping die moves upwards, and the rotating shaft transmits torque to the intermediate gear and drives the intermediate gear to rotate; the lower die is provided with a transmission rack which is arranged along the transverse direction, and the middle gear is meshed with the transmission rack.

The beneficial effect of this basic scheme lies in:

(1) the thin-wall spring of the product to be molded in the scheme needs to be punched with a plurality of punching holes and flanging which are identical in shape and are equidistant on a strip-shaped blank. The stamping die moves downwards once, and a group of stamping holes and flanging can be generated by extruding the blank through the matching of the stamping die and the lower die; when the stamping die moves upwards, the driving rack drives the driving gear to rotate reversely, so that the rotating shaft rotates, and when the rotating shaft rotates reversely, the one-way bearing is meshed, so that the rotating shaft drives the intermediate gear to rotate, and the intermediate gear drives the lower die to slide in the sliding groove through the transmission rack; so that the stamping die can stamp the stamping hole and turn over at another point of the blank when the stamping die moves downwards next time. Because the stroke of the stamping die moving up and down each time is consistent, the angle of the rotating shaft rotating each time is the same, and the stamping die can stamp a plurality of stamping holes and flanges with equal intervals and the same shape on the blank as long as the stamping die reciprocates continuously, and the blank does not need to be repositioned in the process.

(2) In the process of downward movement of the stamping die, the driving rack drives the driving gear to rotate positively, and then the rotating shaft rotates positively; because the intermediate gear is rotationally connected with the upper crossbeam, the lower die is slidably connected with the base and is subjected to moving static friction, and the one-way bearing is in a separation state at the moment, although the one-way bearing can transmit certain torque to the intermediate gear, the intermediate gear cannot be driven to rotate due to small torque; therefore, the blank is stamped when the stamping die moves downwards, and the lower die moves when the stamping die moves upwards, so that the blank is continuously stamped.

The first preferred scheme is as follows: as a further optimization of the basic scheme, a ratchet wheel and a pawl are arranged between the upper cross beam and the rotating shaft to limit the unidirectional rotation of the intermediate gear, the transmission rack is connected with the lower die in a sliding mode, and the transmission rack can only slide along the longitudinal direction relative to the lower die. Through setting up the ratchet pawl for intermediate gear can only rotate in the reversal, and can not corotation, is favorable to improving the stability of stamping in-process lower mould. When needs reset the lower mould, let the lower mould get back to initial position promptly, only need make the relative lower mould of driving rack along longitudinal sliding, can make intermediate gear and driving rack disengage the engaged state, then accessible slip lower mould makes the lower mould return to initial position.

The preferred scheme II is as follows: as a further optimization of the first preferred scheme, a T-shaped groove is formed in the upper surface of the lower die, a protruding rib matched with the T-shaped groove is formed in the lower end face of the transmission rack, and the length of the T-shaped groove is larger than or equal to twice the width of the transmission rack. The lower die and the transmission rack are connected through the mutually matched T-shaped groove and the convex edge, and the connection stability of the lower die and the transmission rack is favorably improved.

The preferable scheme is three: as a further optimization of the second preferred scheme, the reference circle diameter and the number of teeth of the driving gear and the intermediate gear are the same; when the one-way bearing is in a meshing state, because the rotation angles of the driving gear and the middle gear wheel are consistent, the upward moving distance of the stamping die is the sliding distance of the lower die, and therefore the sliding distance of the lower die can be controlled by controlling the distance between the upper dead point and the lower dead point of the stamping shaft, and the distance between each group of stamping holes and the turning is controlled.

The preferable scheme is four: as a further optimization of the third preferred scheme, a pressing mechanism is arranged on the base and comprises a mounting hole arranged on the side wall of the chute, a steel ball arranged in the mounting hole and a pressure spring abutting against the steel ball, and at least one pressing mechanism is respectively arranged on two opposite side walls of the chute; the side wall of the lower die is provided with a plurality of hemispherical grooves, and in the downward moving process of the stamping die, the steel ball is opposite to one hemispherical groove and is embedded into the hemispherical groove. During the downward moving process of the stamping die, namely the stamping die performs the stamping process on the blank, the steel ball is embedded into the hemispherical groove, so that the stability of the lower die can be enhanced during the stamping process; in addition, after the steel ball is opposite to the hemispherical groove, the surface of the steel ball can be completely attached to the surface of the hemispherical groove under the action of the pressure spring, so that the pressing mechanism has a correcting effect on the position of the lower die, and the position precision of stamping is improved.

The preferable scheme is five: as a further optimization of the preferred scheme four, a plurality of forming units matched with the stamping die are arranged on the lower die, and the forming units are sequentially arranged along the transverse direction at equal intervals; the quantity of the hemispherical grooves on the same side surface of the lower die is larger than that of the forming units, and the center distance of the hemispherical grooves on the same side surface of the lower die is equal to that of the adjacent forming units. The semi-spherical groove and the corresponding steel ball are matched all the time when the blank is stamped by the stamping shaft at each time, so that the stability of the lower die is ensured.

Drawings

FIG. 1 is a sectional view toward a front plane in the embodiment;

FIG. 2 is a sectional view of the embodiment, which is oriented toward the right plane;

fig. 3 is a stamped and formed thin walled spring.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a base 10, a steel ball 11, a pressure spring 12, a lower die 20, a transmission rack 21, a stamping die 30, a driving rack 31, a rotating shaft 40, a driving gear 41, an intermediate gear 42, a ratchet pawl 421 and a one-way bearing 422.

In this embodiment, the thin-walled reed continuous stamping device is used for stamping the thin-walled spring as shown in fig. 3, and the thin-walled reed continuous stamping device comprises a frame, wherein the frame comprises a base 10 and an upper cross beam, the upper cross beam is fixed on the base 10 through a supporting beam, so that the upper cross beam floats above the base 10, and a space is formed between the upper cross beam and the base 10. As shown in fig. 1, a sliding groove is transversely formed on the base 10, a lower mold 20 is embedded in the sliding groove, and the lower mold 20 is slidably connected to a side wall of the sliding groove. Seven forming units are arranged on the lower die 20, and the forming units are arranged in sequence along the transverse direction at equal intervals. As shown in fig. 2, a pressing mechanism is disposed on the base 10, the pressing mechanism includes a mounting hole disposed on a side wall of the chute, a steel ball 11 disposed in the mounting hole, and a pressing spring 12 abutting against the steel ball 11, three pressing mechanisms are disposed on two opposite side walls of the chute, and the three pressing mechanisms are disposed at equal intervals to improve the stability of the lower mold 20 mounted in the chute. Nine hemispherical grooves are formed in two side walls of the lower mold 20, wherein seven hemispherical grooves in the middle correspond to the middle of the molding unit, and the other two hemispherical grooves are formed in two ends of the lower mold 20; the center distance between adjacent hemispherical grooves on the same side of the lower mold 20 is equal to the center distance between adjacent molding units.

A stamping die 30 is arranged above the lower die 20, and the stamping die 30 is connected with the upper cross beam in a sliding manner. The upper cross beam is provided with a hydraulic oil cylinder, and the stamping die 30 can be driven to slide back and forth along the vertical direction through the hydraulic oil cylinder. The upper cross beam is rotatably connected with a rotating shaft 40, the rotating shaft 40 is arranged along the longitudinal direction, the rotating shaft 40 is in keyed connection with a driving gear 41, the side surface of the stamping die 30 is fixed with a driving rack 31, and the driving gear 41 is meshed with the driving rack 31. In the process of the up-and-down reciprocating movement of the stamping die 30, the driving gear 41 drives the rotating shaft 40 to rotate in a reciprocating manner; when the stamping die 30 runs downwards, one-time stamping can be performed on the strip-shaped blank positioned on the lower die 20 through the matching of the stamping die 30 and the stamping unit on the lower die 20, and meanwhile, the rotating shaft 40 rotates forwards; and the rotation shaft 40 is reversely rotated when the press die 30 is moved upward. The rotating shaft 40 is rotatably connected with an intermediate gear 42 through a one-way bearing 422, the intermediate gear 42 is rotatably connected with the upper cross beam, and a ratchet pawl 421 is arranged between the upper cross beam and the rotating shaft 40 to limit the intermediate gear 42 to rotate only in the reverse direction; specifically, when the rotating shaft 40 rotates in the forward direction, the ratchet pawl 421 limits the intermediate gear 42 to rotate only in one direction, and the one-way bearing 422 is also in the disengaged state, the rotating shaft 40 will not rotate, and when the rotating shaft 40 rotates in the reverse direction, the one-way bearing 422 is in the engaged state, and the ratchet pawl 421 will not limit the intermediate gear 42 to rotate in the reverse direction, so the rotating shaft 40 will drive the intermediate gear 42 to rotate in the reverse direction.

As shown in fig. 2, the upper surface of the lower mold 20 is provided with a T-shaped groove arranged along the longitudinal direction, and the transmission rack 21 is slidably connected to the lower mold 20, and the lower end surface of the transmission rack 21 is provided with a rib matched with the T-shaped groove, so that the transmission rack 21 can only slide along the longitudinal direction relative to the lower mold 20, and the transmission rack 21 can be meshed with the intermediate gear 42 by sliding the transmission rack 21. When the intermediate gear 42 rotates reversely, the driving rack 21 will drive the lower mold 20 to move leftwards as shown in fig. 1; when the lower die 20 needs to be moved rightwards for resetting, the lower die 20 can be slid rightwards by disengaging the intermediate gear 42 and the transmission rack 21, so that the leftmost stamping unit is opposite to the stamping die 30, and the lower die 20 is returned to the initial state; in order to enable the intermediate gear 42 and the pinion to be disengaged, as shown in fig. 2, in the present embodiment, the length of the T-shaped groove is set to be greater than twice the width of the driving rack 21, i.e., when the driving rack 21 slides to the leftmost end, the intermediate gear 42 and the driving rack 21 are disengaged.

In addition, in this embodiment, the pressing mechanisms on the same side wall of the chute are arranged in the middle of the base 10, that is, one of the pressing mechanisms is aligned with the middle of the stamping die 30, and the other two pressing mechanisms are respectively arranged on two sides of the stamping die 30, and the center distance between the adjacent pressing mechanisms is equal to the center distance between the adjacent hemispherical grooves. During the process of punching the blank downwards by the punching die 30, the steel ball 11 is just embedded into the hemispherical groove, thereby positioning the lower die 20. In addition, the press die 30 is aligned with one of the press units during the downward movement of the press die 30, so that the blank is pressed by the press die 30 and the press unit to be formed.

In the present embodiment, the drive gear 41 and the intermediate gear 42 have the same reference circle diameter and the same number of teeth; the distance between the top dead center and the bottom dead center of the stamping die 30 is equal to the center distance of the adjacent forming units, so that the stamping die 30 moves upwards once in the upward movement process of the stamping die 30, and the stamping unit on the lower die 20 moves forwards by one position relative to the stamping die 30; that is, the press die 30 moves upward once, the press unit opposite to the press die 30 is changed to a press unit on the right side adjacent to the press unit opposite to the press die 30 in the previous press process.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the embodiments is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. The thin-wall reed continuous stamping equipment comprises a rack, wherein the rack comprises a base and an upper cross beam, and the upper cross beam is fixed on the base; the method is characterized in that: a sliding groove is transversely arranged on the base, and a lower die is connected in the sliding groove in a sliding manner; a stamping die is arranged above the lower die, is in sliding connection with the upper cross beam and is driven by a driving oil cylinder to slide along the vertical direction; the upper cross beam is rotatably connected with a rotating shaft, the rotating shaft is arranged along the longitudinal direction in the axial direction, the rotating shaft is in keyed connection with a driving gear, the side surface of the stamping die is fixedly provided with a driving rack, and the driving gear is meshed with the driving rack; the rotating shaft is rotatably connected with an intermediate gear through a one-way bearing, and the intermediate gear is rotatably connected with the upper cross beam; the stamping die moves upwards, and the rotating shaft transmits torque to the intermediate gear and drives the intermediate gear to rotate; the lower die is provided with a transmission rack which is arranged along the transverse direction, and the middle gear is meshed with the transmission rack.

2. The thin-walled reed continuous stamping apparatus of claim 1, wherein: a ratchet wheel and a pawl are arranged between the upper cross beam and the rotating shaft to limit the unidirectional rotation of the intermediate gear, the transmission rack is connected with the lower die in a sliding mode, and the transmission rack can only slide relative to the lower die along the longitudinal direction.

3. The thin-walled reed continuous stamping apparatus of claim 2, wherein: the upper surface of lower mould is equipped with T type groove, the lower terminal surface of driving rack be equipped with T type groove complex bead, the length in T type groove is more than or equal to the twice of driving rack width.

4. The thin-walled reed continuous stamping apparatus of claim 3, wherein: the diameters and the numbers of teeth of reference circles of the driving gear and the intermediate gear are the same.

5. The thin-walled reed continuous stamping apparatus of claim 4, wherein: the base is provided with a pressing mechanism, the pressing mechanism comprises a mounting hole arranged on the side wall of the sliding chute, a steel ball arranged in the mounting hole and a pressure spring abutted against the steel ball, and at least one pressing mechanism is respectively arranged on two opposite side walls of the sliding chute; the side wall of the lower die is provided with a plurality of hemispherical grooves, and in the downward moving process of the stamping die, the steel ball is opposite to one hemispherical groove and is embedded into the hemispherical groove.

6. The thin-walled reed continuous stamping apparatus of claim 5, wherein: the lower die is provided with a plurality of forming units matched with the stamping die, and the forming units are arranged in sequence along the transverse direction at equal intervals; the quantity of the hemispherical grooves on the same side surface of the lower die is larger than that of the forming units, and the center distance of the hemispherical grooves on the same side surface of the lower die is equal to that of the adjacent forming units.