Automatic sheet feeding and receiving device for square stock falling into circle

Abstract

The utility model discloses an automatic sheet feeding and receiving device for square stock falling into a circle. According to the technical scheme, the punching machine comprises a feeding mechanism connected with a punching machine and a material receiving mechanism located below the punching machine, the material receiving mechanism comprises a machine base and a lower die arranged below the punching machine, a material pushing device and a sliding groove are formed in the positions, located at the front end and the rear end of the lower die, of the machine base respectively, the material pushing device is used for pushing a punching sheet to move forwards, and the sliding groove is obliquely formed; a discharging channel connected with the sliding groove is formed in the machine base, and a conveying belt is arranged in the discharging channel. The automatic punching machine has the advantages that the pushing device is arranged, workpieces are pushed forwards after punching is completed, so that the workpieces enter the sliding groove, then the workpieces enter the conveying belt along the sliding groove by means of the inclination of the sliding groove, and due to the fact that the workpieces translate along a plane or an inclined plane in the process, the bottoms of the workpieces are supported in the whole process, the workpieces cannot be damaged due to falling; and the situation that the workpiece is damaged due to direct falling is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mechanical technology, and in particular to an automatic feeding and receiving device for square material to be fed into a round shape. Background Technology

[0002] Square blank blanking is a stamping forming process used for processing metal sheets such as silicon steel sheets. The core of it is to use a die to punch square blanks into round parts. It is often used in the production of power equipment such as transformers and motor cores.

[0003] Existing blanking and blanking production lines generally include a feeding device and a stamping device. The feeding device delivers the sheet metal to the stamping device, where the stamping device punches out circles from the sheet metal and then transfers it to the outside. During the blanking process, a conveyor belt is generally used to move the conveyor belt below the stamping device, so that the blanks fall onto the conveyor belt for transfer. However, since the silicon steel sheets used in motor cores are brittle materials, they need to be softened by heating before stamping. Therefore, during the falling process after stamping, the blanks inevitably suffer some damage, which affects the quality of the final product. Utility Model Content

[0004] In order to solve the above problems, this utility model provides an automatic feeding and receiving device for square material to be fed into a round shape.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an automatic feeding and receiving device for square blanks, including a feeding mechanism connected to a stamping machine and a receiving mechanism located below the stamping machine. The receiving mechanism includes a base and a lower die set below the stamping machine. A pushing device and a slide are respectively provided on the base at the front and rear ends of the lower die. The pushing device is used to push the blanks forward. The slide is obliquely arranged. A feeding channel connected to the slide is opened in the base. A conveyor belt is provided in the feeding channel.

[0006] By adopting the above scheme: after the stamping is completed, the pushing device pushes the stamping sheet forward to the chute, so that the stamping sheet slides from the chute onto the conveyor belt and is carried away by the conveyor belt. Since the stamping sheet does not fall directly from a height onto the conveyor belt during this process, the damage that the stamping sheet may suffer during the transfer is reduced, thus protecting the stamping sheet and preventing it from being damaged.

[0007] Furthermore, the pushing device includes a push cylinder fixedly mounted on the machine base and a pushing block mounted on the telescopic end of the push cylinder, wherein a pushing frame is mounted on the pushing block.

[0008] By adopting the above scheme, the pusher block directly contacts the punch, which is used to transmit the thrust of the pusher cylinder to the punch and finally drive the punch into the slide. The pusher frame can increase the contact area between the pusher block and the punch, which is conducive to the pusher block smoothly sending the punch into the slide.

[0009] Furthermore, the pusher frame includes a pressure plate rotatably connected to the pusher block and limiting blocks inclinedly fixed to both sides of the pusher block, the limiting blocks being used to abut against the upper surface of the pressure plate.

[0010] By adopting the above scheme, the pressure plate can contact the upper surface of the punch, which plays an auxiliary role in limiting the punch during the pushing process and can also increase the friction between the two. The rotation form can ensure that the pressure plate can be adjusted to contact the punch regardless of the state of the punch.

[0011] Furthermore, the lower die includes two symmetrically arranged arc-shaped lower die strips, and a front opening for the feeding device to extend into and a rear opening for the punch to be ejected are formed on both sides of the lower die.

[0012] By adopting the above solution, the opening size of the front opening needs to be larger than the diameter of the punch, so that the punch can successfully leave the range of the lower die and enter the slide.

[0013] Furthermore, a guide block is provided on the base between the lower mold and the slide groove. Both sides of the guide block are inclined surfaces, and the height of the apex is the same as the height of the lower mold.

[0014] By adopting the above solution: since the lower die itself has a certain height, the inclined surface can act as a buffer. When the pusher block moves forward, the inclined surface can make the stamping sheet slide along the inclined surface, thereby further avoiding the damage caused by the stamping sheet falling.

[0015] Furthermore, a guide plate is provided on the side of the slide away from the lower mold, and the side of the guide plate close to the lower mold forms an oblique guide surface. The angle between the guide surface and the top surface of the machine base is smaller than the angle between the inner wall of the slide and the top surface of the machine base.

[0016] By adopting the above solution, the guide plate can press down the part of the front end of the punch that is raised due to the slope, so that it can conform to the slope of the slide in advance, thereby avoiding damage to the raised front end due to the large drop.

[0017] Furthermore: the lower mold includes multiple support blocks arranged in a ring array, a lifting cylinder is provided in the machine base, the support block away from the slide groove is fixedly connected to the telescopic end of the lifting cylinder, the machine base is provided with a telescopic hole for the telescopic end of the lifting cylinder to move, and the bottom area of ​​the support block is larger than the area of ​​the telescopic hole.

[0018] By adopting the above scheme, the lifting cylinder can pre-position the punch at a certain angle, which facilitates matching the angle of the slide groove and thus helps it enter the slide groove.

[0019] In summary, this utility model has the following beneficial effects:

[0020] By setting up a pushing device, the stamping sheet is pushed forward after stamping, so that it enters the chute. Then, the slope of the chute is used to make the stamping sheet slide along the chute onto the conveyor belt. Since the stamping sheet moves horizontally along the plane or slope during this process, the bottom is supported throughout, so it will not be damaged by falling. This avoids the situation where the stamping sheet is damaged by falling directly. Furthermore, since it is supported throughout the process, its position and posture when sliding onto the conveyor belt can also be controlled. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of Embodiment 1 of this utility model. Figure 1 .

[0022] Figure 2 This is a structural schematic diagram of Embodiment 1 of this utility model. Figure 2 .

[0023] Figure 3 yes Figure 2 Enlarged view of point A.

[0024] Figure 4 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0025] Figure 5 This is a cross-sectional view of Embodiment 1.

[0026] Figure 6 This is a cross-sectional view of Embodiment 2.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Stamping machine; 2. Feeding mechanism; 3. Receiving mechanism; 31. Machine base; 32. Lower die; 321. Lower die strip; 322. Support block; 323. Lifting cylinder; 33. Pushing device; 331. Pushing cylinder; 332. Pushing block; 333. Pushing frame; 334. Pressure plate; 335. Limiting block; 34. Slide groove; 35. Conveyor belt; 36. Guide block; 37. Guide plate; 371. Guide surface. Detailed Implementation

[0029] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0030] like Figures 1 to 3As shown, an automatic feeding and receiving device for square blanks to be rounded is described in Embodiment 1. It includes a feeding mechanism 2 connected to a stamping machine 1 and a receiving mechanism 3 located below the stamping machine 1. The receiving mechanism 3 includes a base 31 and a lower die 32 disposed below the stamping machine 1. A pushing device 33 and a sliding groove 34 are respectively disposed on the base 31 at both ends of the lower die 32. The pushing device 33 is used to push the blank forward. The pushing device 33 includes components fixedly mounted on the base 31. The device includes a push cylinder 331 and a pusher block 332 located at the telescopic end of the push cylinder 331. The pusher block 332 is equipped with a pusher frame 333, which includes a pressure plate 334 rotatably connected to the pusher block 332 and limiting blocks 335 inclinedly fixed to both sides of the pusher block 332. The limiting blocks 335 abut against the upper surface of the pressure plate 334. The pusher block 332 directly abuts against the punch, pushing the punch into the slide groove 34. The pusher frame 333... This is to increase the contact area between the pusher block 332 and the punch, thereby facilitating the ejection of the punch from the lower die 32 and into the slide groove 34. The lower die 32 includes two symmetrically arranged arc-shaped lower die strips 321, and forms a front opening for the pusher device 33 to extend into and a rear opening for the punch to be ejected on both sides of the lower die 32. The slide groove 34 is inclined, and a feeding channel connected to the slide groove 34 is opened in the machine base 31. A conveyor belt 35 is installed in the feeding channel. The conveyor belt 35 runs below the worktable of the machine base 31 and is connected to the worktable of the machine base 31 through the slide groove 34. Therefore, after the stamping is completed, the pusher can push the punch forward out of the lower die 32 and into the slide groove 34, so that the punch slides down the slope of the slide groove 34 onto the conveyor belt 35. Since the bottom of the punch is supported during this process, there will be no damage caused by falling from a height, which plays a certain protective role for the punch.

[0031] like Figure 1 , Figures 2 to 5 As shown, a guide block 36 is provided on the base 31 between the lower die 32 and the slide 34. Both sides of the guide block 36 are inclined surfaces, and the height of its apex is the same as the height of the lower die 32. The inclined surfaces allow the front part of the stamping piece to contact the inclined surface first, and then move upwards along the inclined surface. Since the upper die itself also has a certain height, the inclined surface further prevents the stamping piece from falling off. Components support the stamping piece at each stage of its transfer from high to low. A guide plate 37 is provided on the side of the slide 34 away from the lower die 32 to guide... The plate 37 forms an inclined guide surface 371 on the side near the lower die 32. The angle between the guide surface 371 and the top surface of the machine base 31 is smaller than the angle between the inner wall of the slide groove 34 and the top surface of the machine base 31. The guide surface 371 can guide the front end of the punch downward, so that the punch adapts to the downward trend in advance, instead of suddenly downward after entering the slide groove 34 more than halfway, thereby avoiding a certain degree of damage. During the downward process of the front end, the pressure plate 334 can limit the rear end of the punch to prevent the punch from slipping off prematurely.

[0032] Example 2: Figures 4 to 6 As shown, the difference from Embodiment 1 lies in the process of transferring the stamping piece from the lower die 32 to the slide 34. The specific structure is as follows: the lower die 32 includes multiple support blocks 322 arranged in a ring array. A lifting cylinder 323 is provided in the machine base 31. The support blocks 322 away from the slide 34 are fixedly connected to the telescopic end of the lifting cylinder 323. After being connected to the lifting cylinder 323, the support blocks 322 gain the ability to lift, thereby lifting the stamping piece placed on the lower die 32 so that it can adapt to the angle of the slide 34 in advance. After entering the slide 34, the front part will not suddenly drop. The machine base 31 is provided with a telescopic hole for the telescopic end of the lifting cylinder 323 to move. The bottom area of ​​the support block 322 is larger than the area of ​​the telescopic hole. This setting is used to ensure that the support block 322 can only be at the lowest point of the surface of the machine base 31. During stamping, the lower die 32 can also be supported by the machine base 31, so as not to affect the internal lifting structure due to excessive pressure.

[0033] The scope of protection of this utility model includes, but is not limited to, the above embodiments. The scope of protection of this utility model is defined by the claims. Any substitutions, modifications, or improvements to this technology that are easily conceived by those skilled in the art shall fall within the scope of protection of this utility model.

Claims

1. An automatic feeding and receiving device for square blanks to be rounded, comprising a feeding mechanism (2) connected to a stamping machine (1) and a receiving mechanism (3) located below the stamping machine (1), characterized in that: The receiving mechanism (3) includes a base (31) and a lower die (32) located below the stamping machine (1). The base (31) located at the front and rear ends of the lower die (32) is provided with a pushing device (33) and a slide (34). The pushing device (33) is used to push the stamping sheet forward. The slide (34) is obliquely arranged. The base (31) is provided with a feeding channel connected to the slide (34). The feeding channel is provided with a conveyor belt (35).

2. The automatic square material feeding and receiving device as described in claim 1, characterized in that: The pushing device (33) includes a pushing cylinder (331) fixedly mounted on the base (31) and a pushing block (332) mounted on the telescopic end of the pushing cylinder (331), and a pushing frame (333) is provided on the pushing block (332).

3. The automatic square material feeding and receiving device as described in claim 2, characterized in that: The pusher frame (333) includes a pressure plate (334) rotatably connected to the pusher block (332) and a limiting block (335) inclinedly fixed on both sides of the pusher block (332). The limiting block (335) is used to abut against the upper surface of the pressure plate (334).

4. The automatic square material feeding and receiving device as described in claim 3, characterized in that: The lower die (32) includes two symmetrically arranged arc-shaped lower die strips (321), and a front opening for the pusher device (33) to extend into and a rear opening for the punch to be pushed out are formed on both sides of the lower die (32).

5. The automatic square-to-round feeding and receiving device as described in claim 4, characterized in that: A guide block (36) is provided on the base (31) between the lower mold (32) and the slide (34). Both sides of the guide block (36) are inclined surfaces and the height of the top is the same as the height of the lower mold (32).

6. The automatic square material feeding and receiving device as described in claim 5, characterized in that: A guide plate (37) is provided on the side of the slide (34) away from the lower mold (32). The guide plate (37) forms an inclined guide surface (371) on the side close to the lower mold (32). The angle between the guide surface (371) and the top surface of the machine base (31) is smaller than the angle between the inner wall of the slide (34) and the top surface of the machine base (31).

7. The automatic square material feeding and receiving device as described in claim 3, characterized in that: The lower mold (32) includes multiple support blocks (322) arranged in a ring array. A lifting cylinder (323) is provided in the base (31). The support block (322) away from the slide groove (34) is fixedly connected to the telescopic end of the lifting cylinder (323). The base (31) is provided with a telescopic hole for the telescopic end of the lifting cylinder (323) to move. The bottom area of ​​the support block (322) is larger than the area of ​​the telescopic hole.

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