Sheet metal punching machine with material returning structure

Abstract

The utility model relates to the technical field of material returning, and discloses a sheet metal punching machine with a material returning structure, which comprises a punching machine, an upper die mounted on a punching head of the punching machine, a lower die mounted on a platform of the punching machine, an electric cylinder fixedly mounted on one side of a stand column of the punching machine, and a guide sleeve fixedly mounted on the other side of the stand column of the punching machine. A conveying bent pipe is slidably installed in the guide sleeve, a conveying straight pipe is installed at the end, close to the upper die, of the conveying bent pipe in a communicating mode, an upper pushing box is installed at the upper end of the conveying straight pipe in a communicating mode, and a lower pushing box is installed at the lower end of the conveying straight pipe in a communicating mode; the end, away from the upper die, of the conveying bent pipe communicates with the oil conveying assembly, and the push rod end of the electric cylinder is fixedly assembled with the conveying straight pipe through a cross beam. Through cooperation of structures such as the upper pushing box and the lower pushing box which can move in parallel, the oil conveying assembly and the like, the functions of material returning, scrap cleaning and lubricating can be achieved in the process of one-time reciprocating motion.

Description

Technical Field

[0001] The utility model relates to the technical field of material withdrawal, in particular to a sheet metal punching machine with a material withdrawal structure. Background Art

[0002] Sheet metal parts are products processed through sheet metal technology, usually metal sheets with a thickness of less than 6mm. For example, the stamped sheet metal with a U-shaped cross-section. The upper mold is installed on the lower side of the punch head of the punching machine, and the lower mold is installed on the upper side of the platform of the punching machine. When in use, the sheet metal is placed on the lower mold. After the punching machine reciprocates downward once, the sheet metal can be stamped into shape, and the formed sheet metal parts will be covered on the upper mold.

[0003] The following problems exist in the stamping process: scratches are easily generated on the surface of sheet metal parts, and lubricating oil needs to be regularly applied to the working surfaces of the upper and lower molds to reduce the resistance during the stamping process; debris is easily present on the working surfaces of the upper and lower molds, affecting the glossiness of the sheet metal surface; the sheet metal parts are covered on the upper mold, making it difficult to remove manually.

[0004] Therefore, in order to solve the above problems, a sheet metal punching machine with a material stripping structure is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a sheet metal punching machine with a material stripping structure, which facilitates material stripping and also has the functions of cleaning and lubrication, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sheet metal stamping machine with a material return structure, comprising a stamping machine, a stamping head of the stamping machine is equipped with an upper mold, a platform of the stamping machine is equipped with a lower mold, an electric cylinder is fixedly installed on one side of the column of the stamping machine, a guide sleeve is fixedly installed on the other side of the column of the stamping machine, a conveying elbow is slidably installed in the guide sleeve, an end of the conveying elbow close to the upper mold is connected to a conveying straight pipe, an upper push box is connected to the upper end of the conveying straight pipe, and a lower push box is connected to the lower end of the conveying straight pipe, the upper push box is aligned with the upper mold, and the lower push box is aligned with the lower mold, an oil delivery assembly is fixedly installed on the column of the stamping machine, an end of the conveying elbow away from the upper mold is connected to the oil delivery assembly, and the push rod end of the electric cylinder is fixedly assembled with the conveying straight pipe through a cross beam.

[0007] Specifically, the electric cylinder and the conveying curved pipe are arranged horizontally, and the conveying straight pipe is arranged vertically.

[0008] Specifically, the top of the upper push box is provided with an avoidance groove matching the upper mold, the upper push box is provided with a first circumferential conveying cavity, the lower push box is provided with a second circumferential conveying cavity, the first circumferential conveying cavity and the second circumferential conveying cavity are both connected and assembled with a conveying straight pipe, the inner side of the upper push box is evenly provided with first overflow holes, and the first overflow hole is connected to the first circumferential conveying cavity, the outer side of the lower push box is evenly provided with second overflow holes, and the second overflow hole is connected to the second circumferential conveying cavity.

[0009] Specifically, an upper sponge sheet for pressing against the upper mold is fixedly installed on the inner side of the upper push box, and a lower sponge sheet for pressing against the lower mold is fixedly installed on the outer side of the lower push box.

[0010] Specifically, the oil delivery assembly includes an oil storage tank and a hose. The bottom of the oil storage tank is connected to an input end of a pump, and the output end of the pump is connected to an end of a delivery elbow away from the upper mold through a hose.

[0011] Specifically, a vent valve is installed on the top of the oil storage tank.

[0012] Compared with the prior art, the beneficial effect of the utility model is that through the upper push box and the lower push box that can move in parallel, the material can be returned during the process of gradually completing a plug-in between the upper push box and the upper mold, and the lower push box and the lower mold, and the debris can also be pushed out to complete the cleaning, thereby avoiding affecting the glossiness of the surface of the sheet metal.

[0013] At the same time, the oil delivery component can pressurize the lubricating oil and input it into the upper push box and the lower push box, and then fill it into the upper sponge sheet and the lower sponge sheet after overflowing from the first overflow hole and the second overflow hole, thereby completing a lubrication maintenance for the outer surface of the upper mold and the inner surface of the lower mold, making the stamping work smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic front view of the structure of the utility model;

[0015] Figure 2 It is a schematic top view of the structure of the conveying elbow of the utility model;

[0016] Figure 3 It is a schematic three-dimensional diagram of the structure of the upper push box of the utility model;

[0017] Figure 4 It is a schematic cross-sectional view of the structure of the upper push box of the utility model;

[0018] Figure 5 It is a structural schematic diagram of the oil delivery component of the utility model.

[0019] In the figure: 1 punching machine, 2 electric cylinder, 3 conveying elbow, 4 guide sleeve, 5 upper push box, 6 oil delivery assembly, 61 ventilation valve, 62 oil storage tank, 63 hose, 64 pump, 7 lower sponge sheet, 8 lower push box, 9 crossbeam, 10 conveying straight pipe, 11 upper mold, 12 lower mold, 13 upper sponge sheet, 14 first circumferential conveying cavity, 15 first overflow hole, 16 second circumferential conveying cavity, 17 second overflow hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 and Figure 2 The utility model provides a sheet metal stamping machine with a material return structure, including a stamping machine 1, a stamping head of the stamping machine 1 is equipped with an upper mold 11, and a platform of the stamping machine 1 is equipped with a lower mold 12. The stamping machine 1 is an existing device, which can press the upper mold 11 down into the lower mold 12 to stamp and shape the sheet metal part placed on the lower mold 12.

[0022] An electric cylinder 2 is fixedly installed on one side of the column of the punching machine 1, and a guide sleeve 4 is fixedly installed on the other side of the column of the punching machine 1. A delivery elbow 3 is slidably installed in the guide sleeve 4. The end of the delivery elbow 3 close to the upper mold 11 is connected to a delivery straight pipe 10, and the upper end of the delivery straight pipe 10 is connected to an upper push box 5, and the lower end of the delivery straight pipe 10 is connected to a lower push box 8. The upper push box 5 is aligned with the upper mold 11, and the lower push box 8 is aligned with the lower mold 12. An oil delivery component 6 is fixedly installed on the column of the punching machine 1, and the end of the delivery elbow 3 away from the upper mold 11 is connected to the oil delivery component 6; the oil delivery component 6 is used to transfer lubricating oil The lubricating oil is fed into the upper push box 5 and the lower push box 8 through the conveying bent pipe 3 and the conveying straight pipe 10, and then smeared on the surfaces of the upper mold 11 and the lower mold 12 in contact with the conveying bent pipe 3. The conveying bent pipe 3 not only has the function of conveying lubricating oil, but also can translate in the guide sleeve 4, thereby improving the stability of the translational reciprocating movement of the conveying straight pipe 10; the push rod end of the electric cylinder 2 is fixedly assembled with the conveying straight pipe 10 through the cross beam 9. When the electric cylinder 2 is telescopic, it can push and pull the conveying straight pipe 10 and the upper push box 5 and the lower push box 8 at both ends through the cross beam 9, so that the upper push box 5 passes through the outer surface of the upper mold 11 and the lower push box 8 passes through the inner surface of the lower mold 12, thereby completing the surface cleaning and lubrication.

[0023] In addition, the electric cylinder 2 and the conveying curved pipe 3 are arranged horizontally, and the conveying straight pipe 10 is arranged vertically, so as to ensure the accuracy of the translational reciprocating motion of the upper push box 5 and the lower push box 8.

[0024] See also Figure 3 and Figure 4 The top of the upper push box 5 is provided with an avoidance groove matching the upper mold 11, the upper push box 5 is provided with a first circumferential conveying chamber 14, and the lower push box 8 is provided with a second circumferential conveying chamber 16. The first circumferential conveying chamber 14 and the second circumferential conveying chamber 16 are both connected and assembled with the conveying straight pipe 10. The inner side of the upper push box 5 is evenly provided with first overflow holes 15, and the first overflow holes 15 are connected with the first circumferential conveying chamber 14, and the outer side of the lower push box 8 is evenly provided with second overflow holes 17, and the second overflow holes 17 are connected with the second circumferential conveying chamber 16; the lubricating oil entering the conveying straight pipe 10 under high pressure can be filled into the first circumferential conveying chamber 14 and the second circumferential conveying chamber 16 respectively, and the lubricating oil overflowing through the first overflow hole 15 will be distributed around the inner side of the upper push box 5, and the lubricating oil overflowing through the second overflow hole 17 will be distributed around the outer side of the lower push box 8.

[0025] Furthermore, an upper sponge sheet 13 for pressing against the upper mold 11 is fixedly installed on the inner side of the upper push box 5, and a lower sponge sheet 7 for pressing against the lower mold 12 is fixedly installed on the outer side of the lower push box 8; the lubricating oil overflowing through the first overflow hole 15 can be absorbed by the upper sponge sheet 13 and evenly distributed, and the lubricating oil overflowing through the second overflow hole 17 can be absorbed by the lower sponge sheet 7 and evenly distributed, thereby further improving the uniformity of the lubricating oil distribution.

[0026] See also Figure 5 The oil delivery assembly 6 includes an oil storage tank 62 and a hose 63. The bottom of the oil storage tank 62 is connected to the input end of a pump 64, and the output end of the pump 64 is connected to the end of the delivery elbow 3 away from the upper mold 11 through the hose 63; the oil storage tank 62 is an existing component with a tank cover, and lubricating oil is loaded from the top and stored. After the pump 64 is powered on, it can pressurize the lubricating oil into the hose 63 to provide delivery power.

[0027] The oil tank 62 is preferably made of a transparent material so that the consumption of the internal lubricating oil can be easily viewed.

[0028] A vent valve 61 is installed on the top of the oil tank 62 and is used to balance the air pressure inside the oil tank 62 to ensure the output of the lubricating oil.

[0029] The working principle of this embodiment:

[0030] The electric cylinder 2 and the pump 64 are electrically connected to the controller of the punching machine 1 through wires.

[0031] During the stamping operation, the sheet metal is first placed on the lower die 12, and the controller of the stamping machine 1 controls the upper die 11 of the stamping machine 1 to move downward to complete a stamping operation. After the sheet metal is stamped and formed, it is covered on the upper die 11, and then the electric cylinder 2 is gradually extended to drive the upper push box 5 to plug into the upper die 11, and the lower push box 8 to plug into the lower die 12, and gradually push out the sheet metal located in the upper die 11, which is convenient for material withdrawal and can also complete a cleaning of the outer surface of the upper die 11 and the inner surface of the lower die 12.

[0032] At the same time, the oil delivery component 6 pressurizes the lubricating oil and inputs it into the upper push box 5 and the lower push box 8. After overflowing from the first overflow hole 15 and the second overflow hole 17, the lubricating oil is filled into the upper sponge sheet 13 and the lower sponge sheet 7, thereby completing a lubrication maintenance for the outer surface of the upper mold 11 and the inner surface of the lower mold 12.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sheet metal punching machine with a material stripping structure, comprising a punching machine (1), a punching head of the punching machine (1) being equipped with an upper die (11), and a platform of the punching machine (1) being equipped with a lower die (12), characterized in that: An electric cylinder (2) is fixedly mounted on one side of the column of the punching machine (1), and a guide sleeve (4) is fixedly mounted on the other side of the column of the punching machine (1). A delivery elbow (3) is slidably mounted in the guide sleeve (4). The end of the delivery elbow (3) close to the upper mold (11) is connected to a delivery straight pipe (10), the upper end of the delivery straight pipe (10) is connected to an upper push box (5), and the lower end of the delivery straight pipe (10) is connected to a lower push box (8). The upper push box (5) is aligned with the upper mold (11), and the lower push box (8) is aligned with the lower mold (12). An oil delivery assembly (6) is fixedly mounted on the column of the punching machine (1), and the end of the delivery elbow (3) away from the upper mold (11) is connected to the oil delivery assembly (6). The push rod end of the electric cylinder (2) is fixedly assembled with the delivery straight pipe (10) through a crossbeam (9).

2. The sheet metal punching machine with a material stripping structure according to claim 1, characterized in that: The electric cylinder (2) and the conveying curved pipe (3) are arranged horizontally, and the conveying straight pipe (10) is arranged vertically.

3. The sheet metal punching machine with a material stripping structure according to claim 1, characterized in that: The top of the upper push box (5) is provided with an avoidance groove matching the upper mold (11); the upper push box (5) is provided with a first circumferential conveying cavity (14); the lower push box (8) is provided with a second circumferential conveying cavity (16); the first circumferential conveying cavity (14) and the second circumferential conveying cavity (16) are both connected and assembled with the conveying straight pipe (10); first overflow holes (15) are evenly provided around the inner side of the upper push box (5), and the first overflow hole (15) is connected to the first circumferential conveying cavity (14); second overflow holes (17) are evenly provided around the outer side of the lower push box (8), and the second overflow hole (17) is connected to the second circumferential conveying cavity (16).

4. The sheet metal punching machine with a material stripping structure according to claim 3, characterized in that: An upper sponge sheet (13) for pressing against the upper mould (11) is fixedly mounted on the inner side of the upper push box (5), and a lower sponge sheet (7) for pressing against the lower mould (12) is fixedly mounted on the outer side of the lower push box (8).

5. The sheet metal punching machine with a material stripping structure according to claim 1, characterized in that: The oil delivery assembly (6) comprises an oil storage tank (62) and a hose (63); the bottom of the oil storage tank (62) is connected to an input end of a pump (64) installed thereon; the output end of the pump (64) is connected to an end of the delivery elbow (3) away from the upper mold (11) through the hose (63).

6. The sheet metal punching machine with a material stripping structure according to claim 5, characterized in that: A vent valve (61) is installed in communication with the top of the oil storage tank (62).

Images